JP7578971B2 - Joint - Google Patents

Description

The present invention relates to a joint in which a main body and a tip are joined.

The joined object includes, for example, a jig tool and a measuring element. The jig tool includes a jig and a tool. The jig supports the object to be processed. The tool processes the object to be processed. The measuring element measures the object to be measured. The joined object is composed of, for example, a main body, a tip, and a joint. The main body supports the tip. The tip acts on the object. The joint joins the main body and the tip. Patent Document 1 shows an example of a conventional joined object.

Japanese Utility Model Application Publication No. 63-124455

When the body and tip are joined by a joint, it is preferable that the effect on the shape of the joined object is small. For example, if the joined object is deformed by joining the body and tip, the tip may not act well on the target object.

The object of the present invention is to provide a joint that contributes to good performance of the object.

The joint of the present invention comprises a tip portion that acts on an object, a body portion that supports the tip portion, and a joint portion that joins the body portion and the tip portion by a mechanical joint, and the joint portion includes a coupling.

With the above-mentioned joint, the body and tip are joined by a mechanical joint, so the joint is less likely to deform due to heat compared to, for example, a case in which the body and tip are joined by a metallurgical joint. This contributes to the tip acting well on the target object.

The joined article includes a joint having a plurality of joint assemblies, the joint assemblies including a joint recess provided on one of the body portion and the tip portion, and a joint convex portion provided on the other of the body portion and the tip portion, the joints join the body portion and the tip portion by a mechanical bond and an adhesive layer, the tip portion and the body portion include thin plates, the joined article is a jig for supporting the object, the jig is a blade of a centerless grinding device, the joint recess includes a joint space and includes a body recess provided in the body portion and a tip recess provided in the tip portion, the joint convex portion includes a body convex portion provided in the body portion and a tip convex portion provided in the tip portion, the body concave portion and the body convex portion are alternately arranged adjacent to each other, and the tip concave portion and the tip convex portion are alternately arranged adjacent to each other .

According to the above-mentioned joined article, the body and tip are joined by a plurality of joints, so that the strength of the joint is increased. Furthermore, the body and tip are joined by an adhesive layer in addition to being joined by mechanical joining, so that the strength of the joint is further increased. For example, compared to when the body and tip are joined by metallurgical joining, the joined article is less likely to deform due to heat. According to the above-mentioned joined article, the blade properly supports the target workpiece. This contributes to, for example, improving the processing accuracy of the workpiece.

In one example of the joint, the joint includes a dovetail joint.

The above joints provide even greater strength to the joints.

In one example of the joint, the joint further includes a pin that joins the main body and the tip.

The above joints provide even greater strength to the joints.

In one example of the joint, the tip includes a hard material.

The above joint increases the wear resistance of the tip.

In one example of the joint, the tip includes a sintered body.

The above joint increases the wear resistance of the tip.

In one example of the joint, the elastic modulus of the tip portion is greater than the elastic modulus of the main body portion.

The above joint makes the tip less likely to deform.

In one example of the joint, the tip is configured to act on the object while moving relative to the object.

The above joint allows the tip to act well on the object that moves relative to it.

The bonded material of the present invention contributes to good performance of the object.

FIG. 4 is a model diagram of a bonded structure according to the first embodiment. FIG. 11 is a model diagram of a bonded structure according to a second embodiment. FIG. 13 is a model diagram of a bonded structure according to a third embodiment. FIG. 13 is a model diagram of a bonded structure according to a fourth embodiment. FIG. 13 is a perspective view of a joined product according to a fifth embodiment. FIG. 6 is a cross-sectional view of the assembly of FIG. 5 . FIG. 6 is a plan view of the main body of FIG. 5 . FIG. 6 is a bottom view of the tip portion of FIG. 5 . FIG. 13 is a perspective view of a joined product according to a sixth embodiment. FIG. 13 is a perspective view of a joined product according to a seventh embodiment. FIG. 23 is a perspective view of a joined product according to an eighth embodiment. FIG. 12 is a cross-sectional view of the assembly of FIG. FIG. 12 is a plan view of the main body of FIG. 11 . FIG. 12 is a bottom view of the tip portion of FIG. 11 . FIG. 13 is a perspective view of a joined product according to a ninth embodiment. FIG. 23 is a perspective view of a joined product according to a tenth embodiment. FIG. 23 is a cross-sectional view of a joint according to an eleventh embodiment. FIG. 23 is a perspective view of a joined body according to a twelfth embodiment. FIG. 19 is a cross-sectional view of the assembly of FIG. 18 . FIG. 23 is a perspective view of a joined product according to the thirteenth embodiment. FIG. 23 is a perspective view of a joined body according to the fourteenth embodiment. FIG. 23 is a perspective view of a joined product according to the fifteenth embodiment. FIG. 23 is a perspective view of a joined product according to the sixteenth embodiment. FIG. 23 is a perspective view of a joined body according to the seventeenth embodiment. FIG. 23 is a perspective view of a joined product according to the 18th embodiment. FIG. 23 is a perspective view of a joint according to the 19th embodiment. FIG. 20 is a perspective view of a joined body according to the twentieth embodiment. FIG. 21 is a perspective view of a joined body according to the twenty-first embodiment. FIG. 22 is a perspective view of a joined body according to the twenty-second embodiment. FIG. 23 is a perspective view of a joined body according to the twenty-third embodiment. FIG. 27 is a model diagram of a bonded structure according to the 27th embodiment. FIG. 28 is a model diagram of a processing apparatus including a bonded material according to the 28th embodiment. FIG. 29 is a model diagram of a processing apparatus including a bonded material according to the 29th embodiment. FIG. 30 is a model diagram of a processing apparatus including a bonded material according to the 30th embodiment.

First Embodiment
The joined object 10 shown in FIG. 1 acts on the object W. The manner of action of the joined object 10 will be illustrated. In a first example, the joined object 10 acts on the object W when it moves relative to the object W. In a second example, the joined object 10 acts on the object W without moving relative to the object W. In a third example, the manner of action of the joined object 10 includes the manner of the first example and the manner of the second example. The manner of relative movement will be illustrated. In the first example, the joined object 10 does not move, and the object W moves relative to the joined object 10. In the second example, the object W does not move, and the joined object 10 moves relative to the object W. In the third example, both the joined object 10 and the object W move.

The joined object 10 is classified, for example, by function. Classification of the joined object 10 by function includes, for example, a jig tool, a fluid discharge part, a measuring element, and a stylus. The jig tool includes a jig and a tool. The jig supports the workpiece, which is the object W, or supports or guides the workpiece, which is the object W, or the tool. The tool processes the workpiece, which is the object W. The fluid discharge part discharges a fluid, which is the object W. The measuring element measures the object to be measured, which is the object W. The stylus writes on the writing material, which is the object W.

Examples of the usage of the bonded article 10 are given below. In the first example, the bonded article 10 is used in a state where it is incorporated into a processing device. The processing device includes, for example, a processing device, a fluid discharge device, a post-processing device, an assembly device, an inspection device, and a measuring device. The bonded article 10 having the usage mode of the first example includes, for example, a jig, a measuring element, and a fluid discharge unit. In the second example, the bonded article 10 is used without being incorporated into a processing device or the like. The bonded article 10 having the usage mode of the second example includes, for example, a measuring element and a stylus. The stylus is used, for example, to operate a touch panel type pointing device.

The processing device processes the workpiece, which is the target object W. The processing performed by the processing device includes, for example, cutting, drilling, grinding, polishing, rolling, forging, bending, and pressing. The processing device includes, for example, machine tools and press processing devices. The machine tools include, for example, cutting processing devices, grinding processing devices, and special processing devices. The joining material 10 incorporated into the processing device includes, for example, jigs and tools. The jigs of the processing device include, for example, jigs of grinding processing devices, jigs of grinding processing devices, jigs of special processing devices, and jigs of press processing devices. The tools of the processing device include, for example, bits of cutting processing devices, scrapers of cutting processing devices, cutting blades of cutting processing devices, punches of press devices, and dies of press devices.

The fluid ejection device ejects a fluid, which is the target object W. Examples of the fluid ejection device include an injection molding device and a cleaning device. The joining object 10 incorporated into the fluid ejection device includes, for example, a nozzle.

The post-processing device processes the workpiece, which is the target object W. The processing performed by the post-processing device includes, for example, painting, masking, plating, printing, and drying. The post-processing device includes, for example, a painting device, a masking device, a plating device, a printing device, and a drying device. The joining object incorporated into the post-processing device includes, for example, a jig.

The inspection device inspects the object to be inspected, which is the target object W. Inspections performed by the inspection device include, for example, inspection of shape, structure, size, color, and design. The joining object 10 incorporated into the inspection device includes, for example, a jig.

The measuring device measures the object to be measured, which is the target object W. Measurements performed by the measuring device include, for example, contour measurement, three-dimensional measurement, surface roughness measurement, surface shape measurement, X-ray CT (Computed Tomography) measurement, CNC (Computer Numerical Control) image measurement, and roundness measurement. The joint 10 incorporated into the measuring device includes, for example, a jig and a measuring probe. The measuring probe includes, for example, a spherical measuring probe and a stylus.

A Cartesian coordinate system is used to describe the joined object 10. A plane including the X-axis and the Y-axis appears in a plan view of the joined object 10. A plane including the X-axis and the Z-axis appears in a front view of the joined object 10. A plane including the Y-axis and the Z-axis appears in a side view of the joined object 10. The direction parallel to the Z-axis is the first reference direction. The direction parallel to the X-axis is the second reference direction. The direction parallel to the Y-axis is the third reference direction.

As shown in FIG. 1, the joint 10 includes a main body 100, a tip 200, and a joint 20. The main body 100 is, for example, a pillar, a pyramid, a frustum, a sphere, a regular polyhedron, or a solid similar to these solids. The tip 200 is, for example, a pillar, a pyramid, a frustum, a sphere, a regular polyhedron, or a solid similar to these solids. The main body 100 and the tip 200 are, for example, aligned in an arrangement direction. The arrangement direction is, for example, a direction parallel to a first reference direction. The main body 100 supports the tip 200. The tip 200 acts on the object W. The action on the object W includes, for example, supporting, fixing, guiding, processing, inspecting, measuring, and cleaning. The tip 200 is, for example, a member smaller than the main body 100.

The main body portion 100 includes a first material. One or more types of first materials are selected from a predetermined group of materials depending on the function of the main body portion 100, etc. The tip portion 200 includes a second material. One or more types of second materials are selected from a predetermined group of materials depending on the function of the tip portion 200, etc. Examples of the relationship between the first material and the second material are shown below. In a first example, the first material and the second material are different. In a second example, the first material and the second material are the same.

The first material of the main body 100 includes, for example, a hard material and a general material. The general material is a material different from the hard material. The general material includes, for example, iron, steel, and cast iron. The modulus of elasticity of the general material is smaller than the modulus of elasticity of the hard material.

The second material of the tip portion 200 includes, for example, a hard material. Examples of hard materials include diamond, silicon carbide, boron carbide, titanium carbide, tungsten carbide, cubic boron nitride, titanium nitride, silicon nitride, aluminum nitride, and alumina. The tip portion 200 including a hard material is, for example, a sintered body. Examples of sintered bodies include diamond sintered bodies, cubic boron nitride sintered bodies, ceramic sintered bodies, and cemented carbide. The longitudinal modulus of elasticity of a hard material is greater than that of a general material.

The joint 20 mechanically joins the body 100 and the tip 200. Examples of the mechanical joint formed by the joint 20 include at least one of a joint, a pin, a threaded fastener, a crimp, a rivet, and an interference fit. The surface 110 of the body 100 includes a side surface 111, a bottom surface 112, and a body boundary surface 120. The body boundary surface 120 corresponds to the top surface of the body 100. The surface 210 of the tip 200 includes a side surface 211, a top surface 212, and a tip boundary surface 220. The tip boundary surface 220 corresponds to the bottom surface of the tip 200. When the body 100 and the tip 200 are joined by the joint 20, the body boundary surface 120 and the tip boundary surface 220 face each other.

The direction in which the tip portion 200 moves away from the main body portion 100 in the arrangement direction is referred to as the "first removal direction". The load acting to move the tip portion 200 in the first removal direction relative to the main body portion 100 is referred to as the "first load". The direction intersecting the arrangement direction in a plan view of the joined object 10 is referred to as the "lateral direction". The lateral direction includes, for example, a direction parallel to the second reference direction, a direction parallel to the third reference direction, and a direction intersecting these directions. The direction in which the tip portion 200 moves away from the main body portion 100 in the lateral direction is referred to as the "second removal direction". The load acting to move the tip portion 200 in the lateral direction relative to the main body portion 100 is referred to as the "second load".

The joint 20 is configured to restrict movement of the tip portion 200 relative to the main body portion 100 in the first detachment direction when a first load acts on the tip portion 200. The joint 20 restricts movement of the tip portion 200 relative to the main body portion 100 in the first detachment direction by receiving the first load acting on the tip portion 200 at the main body portion 100.

The joint 20 is configured to restrict movement of the tip 200 relative to the main body 100 in the second detachment direction when the second load acts on the tip 200. The joint 20 restricts movement of the tip 200 relative to the main body 100 in the second detachment direction by receiving the second load acting on the tip 200 at the main body 100.

According to the joint 10, the body 100 and the tip 200 are joined by a mechanical joint, so the joint 10 is less likely to deform due to heat compared to, for example, a case in which the body 100 and the tip 200 are joined by a metallurgical joint. This contributes to the tip 200 acting well on the target object.

Second Embodiment
The joined object 10 of the second embodiment shown in FIG. 2 is configured based on the joined object 10 of the first embodiment. The joined object 10 of the second embodiment is a contact type relatively moving object. The joined object 10 is configured to act on the object W when it moves relatively to the object W in a state of contact with the object W. The form of the relative movement will be illustrated. In a first example, the joined object 10 does not move, and the object W moves relative to the joined object 10. In a second example, the object W does not move, and the joined object 10 moves relative to the object W. In a third example, both the joined object 10 and the object W move. The tip portion 200 includes a contact surface 213 that contacts the object W. The contact surface 213 is included in the upper surface 212.

Third Embodiment
The joint 10 of the third embodiment shown in FIG. 3 is configured on the premise of the joint 10 of the first or second embodiment. The joint 10 of the third embodiment includes a joint 30. The joint 30 includes a restricting surface 31 provided on the main body 100 and a restricted surface 32 provided on the tip 200. The restricting surface 31 is included in the main body boundary surface 120. The restricted surface 32 is included in the tip boundary surface 220. The joint 30 is configured to transmit a first load acting on the tip 200 from the restricted surface 32 to the restricting surface 31. The restricting surface 31 and the restricted surface 32 face each other in the arrangement direction. The restricting surface 31 is located in the first detachment direction relative to the regulated surface 32. When the first load acts on the tip 200, the first load is transmitted from the restricted surface 32 to the restricting surface 31. The first load is received by the main body 100, and the movement of the tip 200 relative to the main body 100 in the first detachment direction is restricted.

The type of joint 30 is, for example, similar to the type of joint in wooden framework construction. The types of joint 30 include, for example, dovetail joint, sickle joint, shachi joint, cloth joint, roughly sickle joint, Oikake large stop joint, and kanawa joint. The joint 30 includes one or more joint assemblies 40. The joint assembly 40 includes a joint recess 40A and a joint protrusion 40B. The joint recess 40A includes at least one of a main body recess 100A provided in the main body 100 and a tip recess 200A provided in the tip 200. The joint protrusion 40B includes at least one of a main body protrusion 100B provided in the main body 100 and a tip protrusion 200B provided in the tip 200. The regulating surface 31 is included in at least one of the main body recess 100A and the main body protrusion 100B. The regulated surface 32 is included in at least one of the tip recess 200A and the tip protrusion 200B.

The joint recess 40A includes a joint space 41. The joint space 41 includes, for example, holes and grooves. The holes include holes that do not penetrate the main body portion 100 or the tip portion 200, and holes that penetrate the main body portion 100 or the tip portion 200. The grooves include grooves that do not penetrate the main body portion 100 or the tip portion 200, and grooves that penetrate the main body portion 100 or the tip portion 200. The joint protrusion 40B is configured so that it can be inserted into the joint space 41. The main body portion 100 and the tip portion 200 are joined by combining the joint recess 40A and the joint protrusion 40B.

In the joint 10 including the joint 30, unlike when the body 100 and the tip 200 are joined by a threaded fastener, the operation of joining the body 100 and the tip 200 does not include adjustment of the tightening torque. This contributes to suppressing deformation of the joint 10 due to the influence of the tightening torque, for example.

Fourth Embodiment
The joint 10 of the fourth embodiment shown in FIG. 4 is configured based on the joint 10 of the third embodiment. The restricting surface 31 of the joint 20 of the fourth embodiment is configured to receive the first load and the second load. The joint 30 is configured to transmit the second load acting on the tip portion 200 from the restricted surface 32 of the tip portion 200 to the restricted surface 31 of the main body portion 100. The restricting surface 31 and the restricted surface 32 face each other in the lateral direction. The restricting surface 31 is located in the second detachment direction relative to the restricted surface 32. When the second load acts on the tip portion 200, the second load is transmitted from the restricted surface 32 to the restricting surface 31. The second load is received by the main body portion 100, and the movement of the tip portion 200 relative to the main body portion 100 in the second detachment direction is restricted.

Fifth embodiment
The joint 10 of the fifth embodiment shown in Figs. 5 to 8 is configured on the premise of the joint 10 of the fourth embodiment. As shown in Figs. 5 and 6, the body 100 and the tip 200 of the fifth embodiment are columns. The joint 30 of the fifth embodiment includes a dovetail joint. The joint assembly 40 includes a body recess 100A and a tip protrusion 200B. The joint 30 is configured to transmit a first load acting on the tip 200 from the regulated surface 32 of the tip 200 to the regulated surface 31 of the body 100. The joint 30 is configured to transmit a second load acting on the tip 200 from the regulated surface 32 to the regulated surface 31. The tip protrusion 200B is inserted into the body recess 100A, so that the body 100 and the tip 200 are joined by the joint 30.

The main body 100 is, for example, a rectangular prism. As shown in FIG. 7, the side surface 111 of the main body 100 includes first to fourth side surfaces 111A to 111D. The first side surface 111A and the second side surface 111B are parallel. The third side surface 111C and the fourth side surface 111D are parallel. The main body boundary surface 120 of the main body 100 includes a first boundary surface 121, a second boundary surface 122, and an intermediate boundary surface 123. The intermediate boundary surface 123 of the main body 100 includes a regulating surface 31. The main body 100 includes a main body recess 100A. The joint space 41 of the main body recess 100A includes a dovetail hole or dovetail groove. The main body recess 100A is recessed relative to the first boundary surface 121. The second boundary surface 122 and the intermediate boundary surface 123 define the joint space 41. The second boundary surface 122 corresponds to the bottom surface of the main body recess 100A. The intermediate boundary surface 123 is formed between the first boundary surface 121 and the second boundary surface 122. The intermediate boundary surface 123 corresponds to the side surface of the main body recess 100A.

The main body recess 100A includes a boundary opening 41A that opens to the first boundary surface 121. The width of the boundary opening 41A is narrower than the width of the second boundary surface 122. The intermediate boundary surface 123 is inclined with respect to the depth direction of the main body recess 100A. The intermediate boundary surface 123 includes a first side 123A and a second side 123B. The first side 123A corresponds to the boundary between the first boundary surface 121 and the intermediate boundary surface 123. The second side 123B corresponds to the boundary between the second boundary surface 122 and the intermediate boundary surface 123. The intermediate boundary surface 123 is inclined with respect to the depth direction of the main body recess 100A so that the first side 123A is located closer to the center of the width direction of the main body recess 100A than the second side 123B.

In one example, the joint space 41 further includes a side opening 41B. The configuration of the side opening 41B will be illustrated. In a first example, the side opening 41B opens to at least one of the first side 111A and the second side 111B of the main body 100. The side opening 41B does not open to the third side 111C and the fourth side 111D of the main body 100. In a second example, the side opening 41B opens to at least one of the third side 111C and the fourth side 111D of the main body 100. The side opening 41B does not open to the first side 111A and the second side 111B of the main body 100.

The tip portion 200 is, for example, a rectangular prism. In one example, the height of the tip portion 200 is lower than the height of the main body portion 100. As shown in FIG. 8, the side surface 211 of the tip portion 200 includes the first to fourth side surfaces 211A to 211D. The first side surface 211A and the second side surface 211B are parallel. The third side surface 211C and the fourth side surface 211D are parallel. The tip boundary surface 220 of the tip portion 200 includes the first boundary surface 221, the second boundary surface 222, and the intermediate boundary surface 223. The intermediate boundary surface 223 of the tip portion 200 includes the regulated surface 32. The tip portion 200 includes a tip convex portion 200B. The tip convex portion 200B includes a dovetail. The tip convex portion 200B protrudes relative to the second boundary surface 222. The first boundary surface 221 corresponds to the upper surface of the tip convex portion 200B. The intermediate boundary surface 223 is formed between the first boundary surface 221 and the second boundary surface 222. The intermediate boundary surface 223 corresponds to the side surface of the tip convex portion 200B.

The tip convex portion 200B includes a root 42 which is a connection portion with the second boundary surface 222 in the tip convex portion 200B. The width of the first boundary surface 221 which corresponds to the upper surface of the tip convex portion 200B is wider than the width of the root 42 of the tip convex portion 200B. The intermediate boundary surface 223 is inclined with respect to the height direction of the tip convex portion 200B. The intermediate boundary surface 223 includes a first side 223A and a second side 223B. The first side 223A corresponds to the boundary between the first boundary surface 221 and the intermediate boundary surface 223. The second side 223B corresponds to the boundary between the second boundary surface 222 and the intermediate boundary surface 223. The intermediate boundary surface 223 is inclined with respect to the height direction of the tip convex portion 200B so that the first side 223A is located outside the second side 223B in the width direction of the tip convex portion 200B.

The restricting surface 31 and the regulated surface 32 face each other in the arrangement direction. The restricting surface 31 is located in the first removal direction relative to the regulated surface 32. When a first load acts on the tip portion 200, the first load is transmitted from the regulated surface 32 to the restricting surface 31. The first load is received by the restricting surface 31, and movement of the tip portion 200 relative to the main body portion 100 in the first removal direction is restricted.

The horizontal direction includes, for example, a first horizontal direction and a second horizontal direction. The first horizontal direction is a direction parallel to the side opening 41B in a plan view of the joined article 10. The second horizontal direction is a direction perpendicular to the side opening 41B in a plan view of the joined article 10. The first horizontal direction and the second horizontal direction are perpendicular to each other. The second load includes, for example, a second load acting in the first horizontal direction and a second load acting in the second horizontal direction.

The restricting surface 31 and the restricted surface 32 face each other in the first horizontal direction. The restricting surface 31 is located in the second removal direction relative to the restricted surface 32. When a second load in the first horizontal direction acts on the tip portion 200, the second load is transmitted from the restricted surface 32 to the restricting surface 31. The second load is received by the main body portion 100, and movement of the tip portion 200 relative to the main body portion 100 in the second removal direction is restricted.

In one example, the joint 20 further includes a restricting structure that restricts movement of the tip portion 200 relative to the main body portion 100 in the second lateral direction. The restricting structure includes, for example, a structure that uses a frictional force between the main body portion 100 and the tip portion 200, or a structure that uses a restricting member that restricts relative movement between the main body portion 100 and the tip portion 200. In an example in which the joint 20 includes a restricting structure, when a second load in the second lateral direction acts on the tip portion 200, the restricting structure restricts movement of the tip portion 200 relative to the main body portion 100 in the second removal direction.

Sixth Embodiment
The joint 10 of the sixth embodiment shown in FIG. 9 is configured based on the joint 10 of the fifth embodiment. In the joint 10 of the sixth embodiment, the joint recess 40A and the joint protrusion 40B of the joint assembly 40 are provided on the opposite side to the fifth embodiment. The joint assembly 40 includes a main body protrusion 100B and a tip recess 200A. The joint 30 is configured to transmit a first load acting on the tip portion 200 from the regulated surface 32 of the tip portion 200 to the regulated surface 31 of the main body 100. The joint 30 is configured to transmit a second load acting on the tip portion 200 from the regulated surface 32 to the regulated surface 31. The main body protrusion 100B is inserted into the tip recess 200A, so that the main body 100 and the tip portion 200 are joined by the joint 30.

The main body portion 100 includes a main body protrusion portion 100B. The main body protrusion portion 100B includes a dovetail. The main body protrusion portion 100B protrudes relative to a second boundary surface 122. The first boundary surface 121 corresponds to the upper surface of the main body protrusion portion 100B. The intermediate boundary surface 123 is formed between the first boundary surface 121 and the second boundary surface 122. The intermediate boundary surface 123 corresponds to the side surface of the main body protrusion portion 100B.

The main body convex portion 100B includes a base 42 which is a connection portion with the second boundary surface 122 of the main body convex portion 100B. The width of the first boundary surface 121 which corresponds to the upper surface of the main body convex portion 100B is wider than the width of the base 42 of the main body convex portion 100B. The intermediate boundary surface 123 is inclined with respect to the height direction of the main body convex portion 100B. The intermediate boundary surface 123 is inclined with respect to the height direction of the main body convex portion 100B so that the first side 123A is positioned outside the second side 123B in the width direction of the main body convex portion 100B (see Figures 7 and 8).

The tip portion 200 includes a tip recess 200A. The joint space 41 of the tip recess 200A includes a dovetail hole or groove. The tip recess 200A is recessed relative to a first boundary surface 221. The second boundary surface 222 and an intermediate boundary surface 223 define the joint space 41. The second boundary surface 222 corresponds to the bottom surface of the tip recess 200A. The intermediate boundary surface 223 is formed between the first boundary surface 221 and the second boundary surface 222. The intermediate boundary surface 223 corresponds to the side surface of the tip recess 200A.

The tip recess 200A includes a boundary opening 41A that opens to the first boundary surface 221. The width of the boundary opening 41A is narrower than the width of the second boundary surface 222. The intermediate boundary surface 223 is inclined with respect to the depth direction of the tip recess 200A. The intermediate boundary surface 223 is inclined with respect to the depth direction of the tip recess 200A so that the first side 223A is located closer to the center of the tip recess 200A in the width direction than the second side 223B (see Figures 7 and 8).

In one example, the joint space 41 further includes a side opening 41B. The configuration of the side opening 41B will be illustrated. In a first example, the side opening 41B opens to at least one of the first side 211A and the second side 211B of the tip portion 200. The side opening 41B does not open to the third side 211C and the fourth side 211D of the tip portion 200. In a second example, the side opening 41B opens to at least one of the third side 211C and the fourth side 211D of the tip portion 200. The side opening 41B does not open to the first side 211A and the second side 211B of the tip portion 200.

Seventh embodiment
The joined article 10 of the seventh embodiment shown in Fig. 10 is configured based on the joined articles 10 of the fifth and sixth embodiments. The joint 30 of the seventh embodiment includes a plurality of joint assemblies 40. The plurality of joint assemblies 40 include a joint assemblies 40 of a main body recess 100A and a tip protrusion 200B, and a joint assemblies 40 of a main body protrusion 100B and a tip recess 200A.

The main body portion 100 includes a plurality of main body recesses 100A and a plurality of main body protrusions 100B. The configuration of the main body recess 100A is similar to that of the main body recess 100A of the fifth embodiment. The configuration of the main body protrusion 100B is similar to that of the main body protrusion 100B of the sixth embodiment. The main body recess 100A is provided between two main body protrusions 100B adjacent to both sides in the width direction of the main body recess 100A. The main body protrusions 100B are provided between two main body recesses 100A adjacent to both sides in the width direction of the main body protrusions 100B. The intermediate boundary surface 123 of the main body recess 100A and the intermediate boundary surface 123 of the main body protrusions 100B are the same surface. The intermediate boundary surface 123 of the main body recess 100A and the intermediate boundary surface 123 of the main body protrusions 100B include a regulating surface 31 (see FIG. 9).

The tip portion 200 includes a plurality of tip protrusions 200B and a plurality of tip recesses 200A. The configuration of the tip protrusions 200B is similar to that of the tip protrusions 200B of the fifth embodiment. The configuration of the tip recesses 200A is similar to that of the tip recesses 200A of the sixth embodiment. The tip protrusions 200B are provided between two tip recesses 200A adjacent to both sides in the width direction of the tip protrusions 200B. The tip recesses 200A are provided between two tip protrusions 200B adjacent to both sides in the width direction of the tip recesses 200A. The intermediate boundary surface 223 of the tip protrusions 200B and the intermediate boundary surface 223 of the tip recesses 200A are the same surface. The intermediate boundary surface 223 of the tip protrusions 200B and the intermediate boundary surface 223 of the tip recesses 200A include the regulated surface 32 (see FIG. 9).

Eighth embodiment
The eighth embodiment of the joined article 10 shown in Figs. 11 to 14 is configured based on the fifth embodiment of the joined article 10. As shown in Figs. 11 and 12, the body 100 and the tip 200 of the eighth embodiment are thin plates. The thin plate is an example of a column. The body 100 includes a body recess 100A. As shown in Fig. 13, the body 100 includes a side surface 111 and a body boundary surface 120. The configuration of the body 100 is similar to that of the body 100 of the fifth embodiment. The tip 200 includes a tip protrusion 200B. As shown in Fig. 14, the tip 200 includes a side surface 211 and a tip boundary surface 220. The configuration of the tip 200 is similar to that of the tip 200 of the fifth embodiment. Since the body 100 and the tip 200 are joined by the joint 30, the joined article 10 including the thin plate is less likely to deform due to the joining.

Ninth embodiment
The joined article 10 of the ninth embodiment shown in FIG. 15 is configured based on the joined article 10 of the eighth embodiment. In the joined article 10 of the ninth embodiment, the joint recess 40A and the joint protrusion 40B of the joint assembly 40 are provided on the opposite side to those of the eighth embodiment. The main body 100 includes a main body protrusion 100B. The configuration of the main body protrusion 100B is similar to that of the tip protrusion 200B of the eighth embodiment. The tip 200 includes a tip recess 200A. The configuration of the tip recess 200A is similar to that of the main body recess 100A of the eighth embodiment. Since the main body 100 and the tip 200 are joined by the joint 30, the joined article 10 including the thin plates is less likely to be deformed due to joining.

Tenth embodiment
The joint 10 of the tenth embodiment shown in FIG. 16 is configured based on the joints 10 of the eighth and ninth embodiments. The joint 30 of the tenth embodiment includes a plurality of joint assemblies 40. The main body 100 includes a plurality of main body recesses 100A and a plurality of main body protrusions 100B. The configuration of the main body recesses 100A is similar to that of the main body recesses 100A of the eighth embodiment. The configuration of the main body protrusions 100B is similar to that of the main body protrusions 100B of the ninth embodiment. The tip 200 includes a plurality of tip protrusions 200B and a plurality of tip recesses 200A. The configuration of the tip protrusions 200B is similar to that of the tip protrusions 200B of the eighth embodiment. The configuration of the tip recesses 200A is similar to that of the tip recesses 200A of the ninth embodiment. The strength of the joint 20 is increased because the main body 100 and the tip 200 are joined by the joint 30 including a plurality of joint assemblies 40.

Eleventh embodiment
The joined article 10 of the eleventh embodiment shown in Fig. 17 is configured on the premise of the joined article of the first or second embodiment. The joined portion 20 of the eleventh embodiment includes a fitting portion 50. The fitting portion 50 includes a main body fitting portion 130 provided on the main body portion 100, a tip fitting portion 230 provided on the tip portion 200, and a joining member 51 configured separately from the main body portion 100 and the tip portion 200.

The fitting portion 50 is configured to transmit the first load acting on the tip portion 200 from the tip fitting portion 230 to the body fitting portion 130 via the joining member 51. The body fitting portion 130 includes a body fitting surface 131 and a body fitting hole 132. The body fitting surface 131 defines the body fitting hole 132. The body fitting hole 132 is formed so that the joining member 51 can be inserted. The tip fitting portion 230 includes a tip fitting surface 231 and a tip fitting hole 232. The tip fitting surface 231 defines the tip fitting hole 232. The tip fitting hole 232 is formed so that the joining member 51 can be inserted.

The joining member 51 includes a third material. One or more types of third materials are selected from a predetermined group of materials depending on the function of the joining member 51, etc. Examples of the relationship between the first material of the main body portion 100, the second material of the tip portion 200, and the third material of the joining member 51 are shown below. In a first example, the third material is different from the first material and the second material. In a second example, the third material is the same as the first material and different from the second material. In a third example, the third material is the same as the second material and different from the first material. In a fourth example, the third material is the same as the first material and the second material.

The third material of the joining member 51 includes, for example, a hard material and a general material. The type of hard material of the joining member 51 corresponds to the type of hard material of the main body 100 or the tip portion 200. The type of general material of the joining member 51 corresponds to the type of general material of the main body 100. The joining member 51 including a hard material is, for example, a sintered body. Examples of sintered bodies include diamond sintered bodies, cubic boron nitride sintered bodies, ceramic sintered bodies, and cemented carbide alloys. The longitudinal modulus of elasticity of a hard material is greater than that of a general material.

The joining member 51 is configured separately from the main body 100 and the tip 200 so that it can be inserted into the main body fitting hole 132 and the tip fitting hole 232. The main body fitting surface 131 includes a regulating surface 31. The tip fitting surface 231 includes a regulated surface 32. The joining member 51 is provided between the regulated surface 32 and the regulating surface 31 so that a first load can be transmitted from the regulated surface 32 to the regulated surface 31. When the joining member 51 is inserted into the main body fitting hole 132 and the tip fitting hole 232, the joining portion 20 joins the main body 100 and the tip 200 by fitting the main body fitting portion 130 and the tip fitting portion 230 with the joining member 51. The joining member 51 is held in place by the main body fitting portion 130 and the tip fitting portion 230, for example, by a structure that uses friction between the main body fitting portion 130 and the tip fitting portion 230 and the joining member 51, or by a structure that uses a restricting member that restricts the movement of the joining member 51.

The restricting surface 31 and the restricted surface 32 face the joint member 51 in the arrangement direction and the lateral direction. The restricting surface 31 is located in the first and second detachment directions relative to the joint member 51. The joint member 51 is located in the first and second detachment directions relative to the restricted surface 32. When a first load acts on the tip portion 200, the first load is transmitted from the restricted surface 32 to the joint member 51, and the first load is transmitted from the joint member 51 to the restricting surface 31. The first load is received by the main body portion 100, and the movement of the tip portion 200 relative to the main body portion 100 in the first detachment direction is restricted. When a second load acts on the tip portion 200, the second load is transmitted from the restricted surface 32 to the joint member 51, and the second load is transmitted from the joint member 51 to the restricting surface 31. The second load is received by the main body portion 100, and the movement of the tip portion 200 relative to the main body portion 100 in the second detachment direction is restricted.

Twelfth Embodiment
The joined article 10 of the twelfth embodiment shown in Figures 18 and 19 is configured based on the joined articles 10 of the fourth and eleventh embodiments. The joined article 10 of the twelfth embodiment further includes a joint 30. The joint 30 includes at least one joint assembly 40. The joint assembly 40 includes a joint recess 40A and a joint protrusion 40B. The joint recess 40A includes a tip recess 200A provided on the tip portion 200. The joint protrusion 40B includes a main body protrusion 100B provided on the main body portion 100.

The joint recess 40A includes a joint space 41. The joint space 41 includes, for example, holes and grooves. The holes include holes that do not penetrate the main body portion 100 or the tip portion 200, and holes that penetrate the main body portion 100 or the tip portion 200. The grooves include grooves that do not penetrate the main body portion 100 or the tip portion 200, and grooves that penetrate the main body portion 100 or the tip portion 200. The joint protrusion 40B is configured so that it can be inserted into the joint space 41. The main body portion 100 and the tip portion 200 are joined by combining the joint recess 40A and the joint protrusion 40B.

The main body 100 is, for example, a rectangular prism. The side surface 111 of the main body 100 includes first to fourth side surfaces 111A to 111D. The first side surface 111A and the second side surface 111B are parallel. The third side surface 111C and the fourth side surface 111D are parallel. The main body boundary surface 120 of the main body 100 includes a first boundary surface 121, a second boundary surface 122, and an intermediate boundary surface 123. The main body 100 includes a main body protrusion 100B. The main body protrusion 100B protrudes relative to the second boundary surface 122. The first boundary surface 121 corresponds to the upper surface of the main body protrusion 100B. The intermediate boundary surface 123 is formed between the first boundary surface 121 and the second boundary surface 122. The intermediate boundary surface 123 corresponds to the side surface of the main body protrusion 100B.

The main body convex portion 100B includes a root 42 which is a connection portion with the second boundary surface 122 of the main body convex portion 100B. The width of the first boundary surface 121 which corresponds to the upper surface of the main body convex portion 100B is equal to the width of the root 42 of the main body convex portion 100B. The intermediate boundary surface 123 is parallel to the height direction of the main body convex portion 100B. The intermediate boundary surface 123 includes a first side 123A and a second side 123B (see FIG. 7). The first side 123A corresponds to the boundary between the first boundary surface 121 and the intermediate boundary surface 123. The second side 123B corresponds to the boundary between the second boundary surface 122 and the intermediate boundary surface 123.

The tip portion 200 is, for example, a rectangular column. In one example, the height of the tip portion 200 is lower than the height of the main body portion 100. The side surface 211 of the tip portion 200 includes first to fourth side surfaces 211A to 211D. The first side surface 211A and the second side surface 211B are parallel. The third side surface 211C and the fourth side surface 211D are parallel. The tip boundary surface 220 of the tip portion 200 includes a first boundary surface 221, a second boundary surface 222, and an intermediate boundary surface 223. The tip portion 200 includes a tip recess 200A. The joint space 41 of the tip recess 200A includes a hole or a groove. The tip recess 200A is recessed with respect to the first boundary surface 221. The second boundary surface 222 and the intermediate boundary surface 223 define the joint space 41. The second boundary surface 222 corresponds to the bottom surface of the tip recess 200A. The intermediate boundary surface 223 is formed between the first boundary surface 221 and the second boundary surface 222. The intermediate boundary surface 223 corresponds to the side surface of the tip recess 200A.

The joint space 41 includes a boundary opening 41A that opens to the first boundary surface 221. The width of the boundary opening 41A is equal to the width of the second boundary surface 222. The intermediate boundary surface 223 is parallel to the depth direction of the tip recess 200A. The intermediate boundary surface 223 includes a first side 223A and a second side 223B (see FIG. 8). The first side 223A corresponds to the boundary between the first boundary surface 221 and the intermediate boundary surface 223. The second side 223B corresponds to the boundary between the second boundary surface 222 and the intermediate boundary surface 223.

In one example, the joint space 41 further includes a side opening 41B. The configuration of the side opening 41B will be illustrated. In a first example, the side opening 41B opens to at least one of the first side 211A and the second side 211B of the tip portion 200. The side opening 41B does not open to the third side 111C and the fourth side 111D of the tip portion 200. In a second example, the side opening 41B opens to at least one of the third side 211C and the fourth side 211D of the tip portion 200. The side opening 41B does not open to the first side 211A and the second side 211B of the tip portion 200.

The tip recess 200A includes a tip fitting portion 230. The tip recess 200A includes a pair of side portions 43. One side portion 43 and the other side portion 43 face each other via a joint space 41. Each side portion 43 includes an intermediate boundary surface 223. The tip fitting portion 230 is provided in each side portion 43. The tip fitting hole 232 penetrates each side portion 43. The tip fitting hole 232 opens into each of the intermediate boundary surfaces 223 of each side portion 43 and the side surface 211 of the tip portion 200.

The main body protrusion 100B includes a main body fitting portion 130. The main body fitting hole 132 of the main body fitting portion 130 penetrates the main body protrusion 100B. When the main body protrusion 100B and the tip recess 200A are combined, the main body fitting holes 132 and the tip fitting holes 232 are aligned so that the joining member 51 can be inserted. When the joining member 51 is inserted into each of the main body fitting holes 132 and the tip fitting hole 232, the joining portion 20 joins the main body portion 100 and the tip portion 200 by fitting the main body fitting portion 130 and the tip fitting portion 230 with the joining member 51. The joining member 51 is held in the main body fitting portion 130 and the tip fitting portion 230 by, for example, a structure that uses friction between the main body fitting portion 130 and the tip fitting portion 230 and the joining member 51, or a structure that uses a restricting member that restricts the movement of the joining member 51.

The regulating surface 31 and the regulated surface 32 face the connecting member 51 in the arrangement direction and the horizontal direction (see FIG. 17). The regulating surface 31 is located in the first and second removal directions relative to the connecting member 51. The connecting member 51 is located in the first and second removal directions relative to the regulated surface 32. When a first load acts on the tip portion 200, the first load is transmitted from the regulated surface 32 to the connecting member 51, and the first load is transmitted from the connecting member 51 to the regulating surface 31. The first load is received by the main body portion 100, and movement of the tip portion 200 relative to the main body portion 100 in the first removal direction is restricted. When a second load acts on the tip portion 200, the second load is transmitted from the regulated surface 32 to the connecting member 51, and the second load is transmitted from the connecting member 51 to the regulating surface 31. The second load is received by the main body 100, and movement of the tip 200 relative to the main body 100 in the second removal direction is restricted.

Thirteenth embodiment
The joined article 10 of the thirteenth embodiment shown in Fig. 20 is configured based on the joined article 10 of the twelfth embodiment. In the joined article 10 of the thirteenth embodiment, the joint recess 40A and the joint protrusion 40B of the joint assembly 40 are provided on the opposite sides to those of the twelfth embodiment. The main body 100 includes a main body recess 100A. The configuration of the main body recess 100A is similar to the configuration of the tip recess 200A of the twelfth embodiment. The tip 200 includes a tip protrusion 200B. The configuration of the tip protrusion 200B is similar to the configuration of the main body protrusion 100B of the twelfth embodiment.

Fourteenth embodiment
The joined article 10 of the 14th embodiment shown in FIG. 21 is configured based on the joined articles 10 of the 12th and 13th embodiments. The joint 30 of the 14th embodiment includes a plurality of joint assemblies 40. The main body portion 100 includes a plurality of main body convex portions 100B and a plurality of main body concave portions 100A. The configuration of the main body convex portion 100B is similar to that of the main body convex portion 100B of the 12th embodiment. The configuration of the main body concave portion 100A is similar to that of the main body concave portion 100A of the 13th embodiment. The tip portion 200 includes a plurality of tip concave portions 200A and a plurality of tip convex portions 200B. The configuration of the tip concave portion 200A is similar to that of the tip concave portion 200A of the 12th embodiment. The configuration of the tip convex portion 200B is similar to that of the tip convex portion 200B of the 13th embodiment. Since the body portion 100 and the tip portion 200 are joined by the joint 30 including a plurality of joint assemblies 40, the strength of the joint 20 is increased.

Fifteenth embodiment
The joined article 10 of the fifteenth embodiment shown in Fig. 22 is configured based on the joined articles 10 of the fifth and eleventh embodiments. The configuration of the joined article 10 of the fifteenth embodiment corresponds to a configuration in which the joined article 10 of the fifth embodiment is combined with the fitting portion 50 of the eleventh embodiment. The joined portion 20 includes a joint 30 and a fitting portion 50. The joint 30 includes at least one joint assembly 40. The configuration of the joint assembly 40 is similar to the configuration of the joint assembly 40 of the fifth embodiment. The configuration of the fitting portion 50 is similar to the configuration of the fitting portion 50 of the eleventh embodiment.

The regulating surface 31 included in the intermediate boundary surface 123 of the main body 100 and the regulated surface 32 included in the intermediate boundary surface 223 of the tip 200 face each other in the arrangement direction (see FIG. 6). The regulating surface 31 is located in the first removal direction relative to the regulated surface 32. When a first load acts on the tip 200, the first load is transmitted from the regulated surface 32 to the regulating surface 31. The first load is received by the regulating surface 31, and movement of the tip 200 relative to the main body 100 in the first removal direction is restricted.

The regulating surface 31 included in the intermediate boundary surface 123 of the main body 100 and the regulated surface 32 included in the intermediate boundary surface 223 of the tip 200 face each other in the first horizontal direction (see FIG. 6). The regulating surface 31 is located in the second removal direction relative to the regulated surface 32. When a second load in the first horizontal direction acts on the tip 200, the second load is transmitted from the regulated surface 32 to the regulating surface 31. The second load is received by the main body 100, and movement of the tip 200 relative to the main body 100 in the second removal direction is restricted.

The fitting portion 50 includes a restricting structure exemplified in the fifth embodiment. The joining member 51 includes a restricting member of the restricting structure. When a second load in the second lateral direction acts on the tip portion 200, the second load is transmitted from the restricted surface 32 included in the tip fitting surface 231 to the joining member 51, and the second load is transmitted from the joining member 51 to the restricting surface 31 included in the main body fitting surface 131. The second load is received by the main body portion 100, and movement of the tip portion 200 relative to the main body portion 100 in the second removal direction is restricted.

The direction of relative movement between the body part 100 and the tip part 200 restricted by the joint 30 in the lateral direction is different from the direction of relative movement between the body part 100 and the tip part 200 restricted by the fitting part 50 in the lateral direction. This increases the effect of restricting the relative movement between the body part 100 and the tip part 200 in the lateral direction.

Sixteenth embodiment
The joined article 10 of the 16th embodiment shown in Fig. 23 is configured based on the joined article 10 of the 15th embodiment. In the joined article 10 of the 16th embodiment, the joint recess 40A and the joint protrusion 40B of the joint assembly 40 are provided on the opposite sides to those of the 15th embodiment. The main body 100 includes a main body protrusion 100B. The configuration of the main body protrusion 100B is similar to the configuration of the tip protrusion 200B of the 15th embodiment. The tip 200 includes a tip recess 200A. The configuration of the tip recess 200A is similar to the configuration of the main body recess 100A of the 15th embodiment.

Seventeenth embodiment
The joined article 10 of the 17th embodiment shown in FIG. 24 is configured based on the joined articles 10 of the 15th and 16th embodiments. The joint 30 of the 17th embodiment includes a plurality of joint assemblies 40. The main body portion 100 includes a plurality of main body recesses 100A and a plurality of main body protrusions 100B. The configuration of the main body recesses 100A is similar to that of the main body recesses 100A of the 15th embodiment. The configuration of the main body protrusions 100B is similar to that of the main body protrusions 100B of the 16th embodiment. The tip portion 200 includes a plurality of tip protrusions 200B and a plurality of tip recesses 200A. The configuration of the tip protrusions 200B is similar to that of the tip protrusions 200B of the 15th embodiment. The configuration of the tip recesses 200A is similar to that of the tip recesses 200A of the 16th embodiment. Since the body portion 100 and the tip portion 200 are joined by the joint 30 including a plurality of joint assemblies 40, the strength of the joint 20 is increased.

The fitting portion 50 is provided in at least one joint assembly 40. The configuration of the joining member 51 will be illustrated. In a first example, the fitting portion 50 includes a plurality of joining members 51 provided in each of the plurality of joint assemblies 40. In a second example, the fitting portion 50 includes a joining member 51 that is common to the plurality of joint assemblies 40.

(Eighteenth embodiment)
The joined article 10 of the 18th embodiment shown in Fig. 25 is configured based on the joined articles 10 of the 8th, 11th, and 12th embodiments. The configuration of the joined article 10 of the 18th embodiment corresponds to a configuration in which the joined article 10 of the 8th embodiment is combined with the fitting portion 50 of the 11th embodiment, and the joint 30 of the 8th embodiment is replaced with the joint 30 of the 12th embodiment. The configuration of the joint 30 is similar to the configuration of the joint 30 of the 12th embodiment. The configuration of the fitting portion 50 is similar to the configuration of the fitting portion 50 of the 11th embodiment.

Nineteenth embodiment
The joined article 10 of the 19th embodiment shown in Fig. 26 is configured based on the joined article 10 of the 18th embodiment. In the joined article 10 of the 19th embodiment, the joint recess 40A and the joint protrusion 40B of the joint assembly 40 are provided on the opposite sides to those of the 18th embodiment. The main body 100 includes a main body recess 100A. The configuration of the main body recess 100A is similar to the configuration of the tip recess 200A of the 18th embodiment. The tip 200 includes a tip protrusion 200B. The configuration of the tip protrusion 200B is similar to the configuration of the main body protrusion 100B of the 18th embodiment.

(Twenty-first embodiment)
The joint 10 of the 20th embodiment shown in FIG. 27 is configured based on the joint 10 of the 18th and 19th embodiments. The joint 30 of the 20th embodiment includes a plurality of joint assemblies 40. The main body portion 100 includes a plurality of main body recesses 100A and a plurality of main body protrusions 100B. The configuration of the main body recesses 100A is similar to that of the main body recesses 100A of the 19th embodiment. The configuration of the main body protrusions 100B is similar to that of the main body protrusions 100B of the 18th embodiment. The tip portion 200 includes a plurality of tip protrusions 200B and a plurality of tip recesses 200A. The configuration of the tip protrusions 200B is similar to that of the tip protrusions 200B of the 19th embodiment. The configuration of the tip recesses 200A is similar to that of the tip recesses 200A of the 18th embodiment. Since the body portion 100 and the tip portion 200 are joined by the joint 30 including a plurality of joint assemblies 40, the strength of the joint 20 is increased.

Twenty-first embodiment
The joined article 10 of the 21st embodiment shown in Fig. 28 is configured based on the joined articles 10 of the eighth and eleventh embodiments. The configuration of the joined article 10 of the 21st embodiment corresponds to a configuration in which the joined article 10 of the eighth embodiment is combined with the fitting portion 50 of the eleventh embodiment. The configuration of the joint 30 is similar to the configuration of the joint 30 of the eighth embodiment. The configuration of the fitting portion 50 is similar to the configuration of the fitting portion 50 of the eleventh embodiment.

Twenty-second embodiment
The joined article 10 of the 22nd embodiment shown in Fig. 29 is configured based on the joined article 10 of the 21st embodiment. In the joined article 10 of the 22nd embodiment, the joint recess 40A and the joint protrusion 40B of the joint assembly 40 are provided on the opposite sides to those of the 21st embodiment. The main body 100 includes a main body protrusion 100B. The configuration of the main body protrusion 100B is similar to the configuration of the tip protrusion 200B of the 21st embodiment. The tip 200 includes a tip recess 200A. The configuration of the tip recess 200A is similar to the configuration of the main body recess 100A of the 21st embodiment.

Twenty-third embodiment
The joint 10 of the 23rd embodiment shown in FIG. 30 is configured based on the joint 10 of the 21st and 22nd embodiments. The joint 30 of the 23rd embodiment includes a plurality of joint assemblies 40. The main body 100 includes a plurality of main body recesses 100A and a plurality of main body protrusions 100B. The configuration of the main body recesses 100A is similar to that of the main body recesses 100A of the 21st embodiment. The configuration of the main body protrusions 100B is similar to that of the main body protrusions 100B of the 22nd embodiment. The tip 200 includes a plurality of tip protrusions 200B and a plurality of tip recesses 200A. The configuration of the tip protrusions 200B is similar to that of the tip protrusions 200B of the 21st embodiment. The configuration of the tip recesses 200A is similar to that of the tip recesses 200A of the 22nd embodiment. Since the body portion 100 and the tip portion 200 are joined by the joint 30 including a plurality of joint assemblies 40, the strength of the joint 20 is increased.

The fitting portion 50 is provided in at least one joint assembly 40. The configuration of the joining member 51 will be illustrated. In a first example, the fitting portion 50 includes a plurality of joining members 51 provided in each of the plurality of joint assemblies 40. In a second example, the fitting portion 50 includes a joining member 51 that is common to the plurality of joint assemblies 40.

(Twenty-fourth embodiment)
The joined article 10 of the 24th embodiment is configured on the premise of the joined article 10 of any one of the 12th to 23rd embodiments. In the joined article 10 of the 24th embodiment, the joining member 51 of the fitting portion 50 is arranged in a direction parallel to the first detachment direction. The configuration of the tip fitting hole 232 of the tip fitting portion 230 will be illustrated. In the first example, the tip fitting hole 232 does not penetrate the tip portion 200. The tip fitting hole 232 opens to the first boundary surface 221 or the second boundary surface 222. In the second example, the tip fitting hole 232 penetrates the tip portion 200. The tip fitting hole 232 opens to the first boundary surface 221 and the upper surface 212, or opens to the second boundary surface 222 and the upper surface 212. The configuration of the main body fitting hole 132 of the main body fitting portion 130 will be illustrated. In the first example, the main body fitting hole 132 does not penetrate the main body portion 100. The body fitting hole 132 opens to the first boundary surface 121 or the second boundary surface 122. In a second example, the body fitting hole 132 penetrates the body portion 100. The body fitting hole 132 opens to the first boundary surface 121 and the bottom surface 112, or opens to the second boundary surface 122 and the bottom surface 112. The fitting portion 50 is configured to transmit the second load acting on the tip portion 200 from the tip fitting portion 230 to the body fitting portion 130 via the joining member 51.

(Twenty-fifth embodiment)
The joined article 10 of the 25th embodiment is configured based on the joined article 10 of any one of the first to 23rd embodiments. The joined article 10 of the 25th embodiment includes a plurality of tip portions 200 configured individually, and a joint 30 that connects the plurality of tip portions 200. In a state in which the plurality of tip portions 200 are connected by the joint 30, the plurality of tip portions 200 configure, for example, an elongated structure that is long in the horizontal direction. In a first example, the plurality of tip portions 200 are connected to be aligned in a first horizontal direction. In a second example, the plurality of tip portions 200 are connected to be aligned in a second horizontal direction.

The configuration of the joint 30 that connects the multiple tip portions 200 is similar to the configuration of the joint 30 that joins the main body portion 100 and the tip portion 200. The joint 30 that connects the multiple tip portions 200 includes multiple joint assemblies 40. The tip portion 200 includes multiple tip convex portions 200B and multiple tip concave portions 200A. The configuration of the tip convex portions 200B is similar to the configuration of the tip convex portions 200B of the eighth embodiment. The configuration of the tip concave portions 200A is similar to the configuration of the tip concave portions 200A of the eighth embodiment.

(Twenty-sixth embodiment)
The joined article 10 of the 26th embodiment is configured on the premise of the joined article 10 of any one of the first to 23rd embodiments. The main body portion 100 of the 26th embodiment includes a recess into which the tip portion 200 is inserted. The recess opens to the main body boundary surface 120 of the main body portion 100. The surface of the recess constitutes the main body boundary surface 120. The tip boundary surface 220 of the tip portion 200 includes a side surface 211. The joint 30 includes at least a first joint set 40 and a second joint set 40. The first joint set 40 includes a joint recess 40A and a joint protrusion 40B aligned in a first removal direction. The second joint set 40 includes a joint recess 40A and a joint protrusion 40B aligned in a first lateral direction. The main body 100 and the tip portion 200 are joined by the first joint assembly 40 and the second joint assembly 40, in which the joint recesses 40A and the joint protrusions 40B are arranged in different directions, thereby increasing the strength of the joint 20. For example, even when the size of the tip portion 200 in the lateral direction is set to be smaller than that of the main body 100, the strength of the joint 20 falls within an appropriate range.

Twenty-seventh embodiment
The joined article 10 of the 27th embodiment shown in Fig. 31 is configured based on any of the joined articles 10 of the first to 26th embodiments. The joint 20 of the 27th embodiment joins the main body 100 and the tip 200 by chemical bonding in addition to mechanical bonding.

The form of chemical bonding by the joint 20 includes, for example, a form using an adhesive. The joint 20 includes an adhesive layer 60, which is a layer of adhesive. The adhesive layer 60 is formed at least in one location between the body boundary surface 120 and the tip boundary surface 220, between the body fitting surface 131 and the joining member 51, and between the tip fitting surface 231 and the joining member 51. The adhesive layer 60 is configured to fill in at least one location between the body boundary surface 120 and the tip boundary surface 220, between the body fitting surface 131 and the joining member 51, and between the tip fitting surface 231 and the joining member 51. The type of adhesive is, for example, an ultraviolet-curing adhesive. When the body 100 and the tip 200 are joined by the joint 20, at least one of the pair of the body boundary surface 120 and the tip boundary surface 220, the pair of the body fitting surface 131 and the joining member 51, and the pair of the tip fitting surface 231 and the joining member 51 face each other via the adhesive layer 60. According to the joint 10, the body 100 and the tip 200 are joined by mechanical and chemical bonding, so that the strength of the joint 20 is increased.

(Twenty-eighth embodiment)
The joined article 10 of the 28th embodiment shown in Fig. 32 is configured on the premise of any of the joined articles 10 of the first to 27th embodiments. The joined article 10 of the 28th embodiment is configured so as to be able to be incorporated into a processing device 300. The processing device 300 includes a fixing part 310 for fixing the joined article 10. The main body part 100 includes a fixed part 140. The fixed part 140 is fixed to the fixing part 310. The fixing part 310 is configured so as to allow the main body part 100 to be detached. The fixing part 310 includes a coupling structure for fixing using, for example, a threaded fastener, or a chuck device.

Twenty-ninth embodiment
The joined object 10 of the 29th embodiment shown in Figure 33 is configured on the premise of the joined object 10 of the 28th embodiment. The joined object 10 of the 29th embodiment is a jig. The processing device 300 is, for example, a centerless grinding device. The joined object 10 is a blade of the centerless grinding device. The main body 100 is, for example, a steel plate. The type of steel plate is, for example, a cold-rolled steel plate. The type of steel plate based on the plate thickness is, for example, a thin plate. The tip portion 200 is, for example, a thin plate of a hard material. The tip portion 200 is, for example, a sintered body. The sintered body is, for example, a cemented carbide alloy. The portion including the upper surface 212 of the tip portion 200 is a diamond sintered body.

The joint 20 includes a joint 30 and an adhesive layer 60. The joint 30 includes a plurality of joint assemblies 40. The configuration of the joint 30 conforms to the configuration of the joint 30 of the ninth embodiment. The configuration of the adhesive layer 60 conforms to the configuration of the adhesive layer 60 of the eighteenth embodiment.

Thirtieth Embodiment
The joined article 10 of the 30th embodiment shown in Figure 34 is configured based on the joined article 10 of the 28th embodiment. The joined article 10 of the 30th embodiment is a tool. The processing device 300 is, for example, a press processing device. The joined article 10 is a punch for the press processing device. The main body 100 is, for example, a rectangular column. The main body 100 is, for example, made of a general material. The tip 200 is, for example, a rectangular column made of a hard material. The tip 200 is, for example, a sintered body. The sintered body is, for example, a cemented carbide alloy. The portion including the upper surface 212 of the tip 200 is a diamond sintered body.

The joint portion 20 includes a joint 30 and a mating portion 50. The joint 30 includes at least one joint set 40. The configuration of the joint 30 is similar to that of the joint 30 of the fourth embodiment. The configuration of the mating portion 50 is similar to that of the mating portion 50 of the eleventh embodiment.

Thirty-first embodiment
The joined article 10 of the 31st embodiment shown in FIG. 34 is configured based on the joined article 10 of the 28th embodiment. The joined article 10 of the 31st embodiment is a tool. The processing device 300 is, for example, a cutting device. The joined article 10 is a cutting blade for cutting a fiber, a thin plate, or a sheet-like workpiece. The main body 100 is, for example, a plate material. The main body 100 is, for example, made of a general material. The tip portion 200 is, for example, a thin plate made of a hard material. The tip portion 200 is, for example, a sintered body. The sintered body is, for example, a cemented carbide alloy. The portion including the upper surface 212 of the tip portion 200 is a diamond sintered body.

The joint 20 includes a joint 30 and an adhesive layer 60. The joint 30 includes a plurality of joint assemblies 40. The configuration of the joint 30 conforms to the configuration of the joint 30 of the ninth embodiment. The configuration of the adhesive layer 60 conforms to the configuration of the adhesive layer 60 of the eighteenth embodiment.

The above description of each embodiment is not intended to limit the form that the bonded article of the present invention may take. The bonded article of the present invention may take a form different from the form exemplified in each embodiment. One example is a form in which part of the configuration of the embodiment is replaced, modified, or omitted, or a form in which a new configuration is added to the embodiment.

10: Joint 20: Joint 30: Joint 40: Joint assembly 40A: Joint recess 40B: Joint protrusion 51: Joint member 100: Main body 200: Tip

Claims (7)

A tip portion that acts on an object;
A main body portion supporting the tip portion;
A joint comprising a joint portion that joins the body portion and the tip portion by mechanical joining,
The joint includes a joint;
The joint includes a plurality of joint sets;
The joint assembly includes a joint recess provided on one of the body portion and the tip portion, and a joint protrusion provided on the other of the body portion and the tip portion,
the joint portion joins the body portion and the tip portion by a mechanical joint and an adhesive layer;
the tip portion and the body portion include a thin plate;
the joint is a jig for supporting the object,
The jig is a blade of a centerless grinding machine,
The joint recess includes a main body recess provided in the main body portion and a tip recess provided in the tip portion,
The joint protrusion includes a main body protrusion provided on the main body portion and a tip protrusion provided on the tip portion,
The main body recesses and the main body protrusions are alternately provided adjacent to each other,
The tip recesses and the tip protrusions are alternately provided adjacent to each other .
Joint. The assembly of claim 1 , wherein the joint comprises a dovetail joint. The joint according to claim 1 or 2, wherein the joint portion further includes a joint member that joins the main body portion and the tip portion. The joint according to any one of claims 1 to 3, wherein the tip portion comprises a hard material. The joint according to any one of claims 1 to 4, wherein the tip portion includes a sintered body. The bonded article according to any one of claims 1 to 5, wherein the elastic modulus of the tip portion is greater than the elastic modulus of the main body portion. The joint according to any one of claims 1 to 6, wherein the tip portion is configured to act on the object while moving relatively to the object.