JP5429156B2 - Work cutting device and work cutting method - Google Patents

Description

  The present invention relates to a workpiece cutting apparatus and a workpiece cutting method for simultaneously cutting a workpiece to be cut into a plurality of piece-like workpieces using a multi-wire workpiece cutting section.

  Conventionally, a plurality of pieces are simultaneously formed by using a multi-wire work cutting unit in which fine wires are arranged in a multi-row state at a constant pitch on a work made of a hard and brittle material such as a semiconductor material, a glass material, ceramics, and a magnetic material. There is a multi-wire saw that cuts into a workpiece.

  For example, a conventional multi-wire saw is bonded to a base such as a glass plate while positioning the workpiece using two adjacent orthogonal reference plates for setting a plurality of workpieces to be cut simultaneously on the wire saw. I am trying to paste it with an agent. And the workpiece fixed on the glass plate is set with respect to the multi-wire saw, and the glass plate side is moved upwardly toward the multi-wire saw side, so that the workpiece is brought together with each wire of the multi-wire saw at an equal pitch arrangement with each glass plate. It is made to cut | disconnect (for example, refer patent document 1).

  In the apparatus of Patent Document 1, even when the work is fixed while positioning using the positioning reference plate, the work fixing position is inclined or shifted depending on the amount of adhesive applied or the situation during curing. . As a result, the cutting accuracy decreases when cutting with a multi-wire saw. In particular, the cutting position accuracy cannot be obtained at both ends of the joint portion between the workpieces. For this reason, the piece-like workpieces at both ends are discarded as defective products, and the workpiece material is wasted. Alternatively, the flaky workpieces at both ends may be used as a recycled material, but the flaky workpieces at both ends are returned to the raw material, which is not an efficient reuse. Further, since an adhesive is used for fixing the workpiece, an adhesive process before cutting and a peeling process after cutting are inevitably required. The bonding work time and adhesive curing time in the bonding process take a great deal of time, for example, 6 hours, and the sorting work time and peeling time in the peeling process, for example, takes about 2 hours. Yes, it is inefficient and wastes process and time. Furthermore, since the apparatus of Patent Document 1 also cuts sub-members such as an adhesive and a glass plate, these cutting wastes are used for the surface properties of the flaky workpiece (surface smoothness, surface resistance, plating film-forming properties). ) May worsen.

  Therefore, it is desired to improve the cutting accuracy by positioning and fixing the workpiece without using an adhesive. For example, Patent Document 2 describes a workpiece cutting device that does not require an adhesion process or a peeling process.

JP-A-10-128649 Japanese Patent No. 4355029

  In FIG. 2 of Patent Document 2, it is possible to down-cut by arranging a wire cutting portion on the lower side of the clamping reference plate, and cutting the workpiece by pushing it toward the lower wire by an extrusion pusher as an extrusion means from above. A simple workpiece cutting device is described. The workpiece cutting apparatus capable of down-cutting includes a clamping press plate disposed opposite to the clamping reference plate, and the clamping press plate is formed in, for example, a vertically long bar shape, and the workpiece to be clamped is a reference for clamping A holding spring for holding is provided as a holding member that is pressed and brought into contact with the surface and is slidable elastically and slidably in the cutting direction (vertical direction). The clamping reference plate is divided into two parts in the vertical direction to allow the wire to pass therethrough.

  This workpiece cutting device positions and fixes a plurality of block-shaped workpieces without using an adhesive. As a result, the change in the behavior of the wire is likely to affect each block-shaped workpiece that has been cut. By the way, in a workpiece cutting device, when a lower workpiece is pushed out toward a wire by an extrusion pusher, the workpiece is cut while the wire is bent. For this reason, when a wire bends and a wire contacts the discharge guide member which is the lower side of the divided clamping reference plate, the behavior of the wire changes, which may affect the accuracy of cutting the workpiece. Further, it is necessary to improve the lower side of the divided clamping reference plate when the work is lowered (moving from the upper side to the lower side of the clamping reference plate). For this reason, the distance between the lower clamping reference plate and the clamping press plate arranged to face the lower clamping reference plate is slightly larger (longer) than the distance between the upper clamping reference plate and the clamping press plate arranged opposite to the upper clamping reference plate. Need to design. As a result, the workpiece becomes easy to move (posture fluctuation is likely to occur), and the workpiece cutting accuracy may be affected.

  The present invention has been made in view of the above, and the behavior of the wire is stable without using an adhesive, and the sliding state or holding state of a plurality of block-shaped workpieces is stable, and the cutting accuracy is improved. An object of the present invention is to provide a workpiece cutting device and a workpiece cutting method that can improve the process.

In order to solve the above-described problems and achieve the object, the workpiece cutting apparatus is configured to simultaneously combine a plurality of piece-like workpieces, each of which is an assembly in which end surfaces of a plurality of block-like workpieces are pressed against each other without using an adhesive. A workpiece cutting portion having a plurality of wires to be cut into a plurality of positions, a positioning reference plate having a positioning reference surface parallel to a cutting surface of the workpiece cutting portion by the wires and set in a positional relationship with the wires, and the positioning A positioning member for positioning the workpiece so as not to be displaced in a direction perpendicular to the positioning reference surface in a state in which the workpiece is pressed against the reference surface for positioning, and a workpiece positioning body orthogonal to the positioning reference surface clamping a clamping reference plate having a lifting reference plane, and a clamping retaining member which is opposed to the clamping reference plate, located in the wire longitudinal direction That the workpiece holding member for clamping the both ends of the workpiece, the workpiece includes a pushing means for pushing the cutting direction in which the workpiece is cut with respect to the workpiece cutting portion which is fixed in position, the workpiece clamping bearing member is A plurality of the holding members for clamping are arranged in a direction orthogonal to the cutting direction, and the wire is passed between the holding members for holding adjacent to each other, and the holding member for holding is at a position where the wire passes, It is an integral plate member that is not divided in the cutting direction .

  Thereby, even if a wire bends and a workpiece | work falls in the direction in which a workpiece | work is cut | disconnected, a wire does not contact with the reference | standard reference | standard for clamping. As a result, it is possible to reduce the possibility that the behavior of the wire changes and the cutting accuracy to the workpiece is affected. In addition, since no adhesive is used, a bonding process and a peeling process that require a great amount of time are unnecessary, and the entire cutting process can be significantly shortened.

  As a desirable mode of the present invention, it is preferable that an end portion of the clamping reference plate in a direction in which the workpiece is cut is formed in a comb-teeth shape. Thereby, the space | interval of a slit can be shortened and the slit which lets a wire pass, and the slit which does not let a wire pass can be provided. As a result, a plurality of wire intervals can be freely selected. Further, when the wire interval is shortened, the number of piece-like workpieces that can be cut at a time increases. In addition, since the workpiece descends between the reference surface (comb teeth) of the single member and the holding member for clamping, the workpiece can be stabilized and the possibility of affecting the accuracy of cutting the workpiece can be reduced.

  As a desirable mode of the present invention, it is preferable that there are a plurality of the holding members for clamping and the wire passes between the holding members for clamping. As a result, even if the wire is bent and the wire is lowered in the direction in which the workpiece is cut, the wire passes between the holding members for holding, so that the wire does not contact the holding member for holding. As a result, it is possible to reduce the possibility that the behavior of the wire changes and the cutting accuracy to the workpiece is affected. In addition, since the work descends between the reference surface of the single member and the holding member for clamping, the work can be stabilized and the possibility that the cutting accuracy to the work may be reduced can be reduced.

  As a desirable mode of the present invention, it is preferable that the holding member for clamping has a second slit at an end portion in a direction in which the workpiece is cut, and the wire passes through the second slit. Thereby, even if the space | interval of a slit is shortened, a wire can be passed through a slit. As a result, a plurality of wire intervals can be freely selected. Further, when the wire interval is shortened, the number of piece-like workpieces that can be cut at a time increases.

In order to solve the above-described problems and achieve the object, the workpiece cutting method prepares a workpiece as an assembly in which the end faces of a plurality of block-shaped workpieces are pressed against each other without using an adhesive, and the workpiece is a work piece introducing step to be introduced into the cutting device, the work cutting portion having a plurality of wires for cutting the workpiece simultaneously into a plurality of pieces shaped workpiece, the cut surface the workpiece cutting device according to the wire of the workpiece cutting portion A positioning reference plate that has a positioning reference surface that is parallel and has a positional relationship with the wire, and that the workpiece is pressed against the positioning reference surface so as not to deviate in a direction perpendicular to the positioning reference surface. A workpiece positioning body having a positioning holding member for positioning the workpiece, and a clamping reference plane orthogonal to the positioning reference plane. That the clamping reference plate has a holding member for clamping which is opposed to the clamping reference plate includes a workpiece holding member that sandwich both ends of the workpiece positioned on the wire longitudinal direction, the said A workpiece positioning body and a workpiece clamping body holding the workpiece and pushing in a cutting direction in which the workpiece is cut , and the workpiece clamping body is used for clamping in the direction orthogonal to the cutting direction. A plurality of holding members are arranged, the wire passes between adjacent holding members for holding, and the holding member for holding is an integrated plate-like member that is not divided in the cutting direction at a position where the wires pass It is characterized by being.

  Thus, even if the wire is bent and the wire is lowered in the direction in which the workpiece is cut, the wire does not contact the clamping reference plate. As a result, it is possible to reduce the possibility that the behavior of the wire changes and the cutting accuracy to the workpiece is affected. In addition, since the work descends between the reference surface of the single member and the holding member for clamping, the work can be stabilized and the possibility that the cutting accuracy to the work may be reduced can be reduced. In addition, since no adhesive is used, a bonding process and a peeling process that require a great amount of time are unnecessary, and the entire cutting process can be significantly shortened.

  As a desirable mode of the present invention, it is preferable that the wire passes through a second slit between the holding members for holding or at an end portion of the holding member for holding in a direction in which the workpiece is cut. Thereby, even if a wire bends and a wire falls in the direction in which a workpiece | work is cut | disconnected, a wire does not contact with the holding member for clamping. As a result, it is possible to reduce the possibility that the behavior of the wire changes and the cutting accuracy to the workpiece is affected.

  The workpiece cutting device and the workpiece cutting method of the present invention stabilize the behavior of the wire without using an adhesive, stabilize the sliding or holding state of a plurality of block-shaped workpieces, and improve the cutting accuracy. .

FIG. 1 is a schematic view of a workpiece cutting device. FIG. 2 is a schematic view of the clamping reference plate of the present embodiment. FIG. 3 is a schematic view of the holding member for clamping according to the present embodiment. FIG. 4 is an explanatory diagram for explaining a cross-sectional state of the holding member for clamping according to the present embodiment. FIG. 5 is a flowchart for explaining the cutting process of the workpiece cutting apparatus according to the present embodiment. FIG. 6 is an explanatory diagram for explaining a cutting process of the workpiece cutting apparatus. FIG. 7 is an explanatory view illustrating a cutting process of the workpiece cutting device. FIG. 8 is an explanatory diagram for explaining the behavior of the wire in the workpiece cutting step. FIG. 9 is an explanatory diagram for explaining a cutting process of the workpiece cutting apparatus. FIG. 10 is an explanatory diagram for explaining a cutting process of the workpiece cutting apparatus. FIG. 11 is a schematic view of a holding member for clamping according to the second embodiment. FIG. 12 is an explanatory view illustrating the relationship between the holding member for clamping and the cutting step according to the second embodiment. FIG. 13 is a perspective view showing a specific configuration of the workpiece cutting device. FIG. 14 is a perspective view showing a specific configuration of a workpiece cutting device according to a modification. FIG. 15 is a schematic view showing a modification of the work assembly.

  DESCRIPTION OF EMBODIMENTS Embodiments (embodiments) for carrying out the present invention will be described in detail with reference to the drawings. The present invention is not limited by the contents described in the following embodiments. The constituent elements described below include those that can be easily assumed by those skilled in the art and those that are substantially the same. Furthermore, the constituent elements described below can be appropriately combined.

(Embodiment 1)
FIG. 1 is a schematic view of a workpiece cutting device. The workpiece cutting device 100 includes a workpiece cutting unit 10 including a plurality of wires 11, a positioning reference plate 21, a clamping reference plate 31, a positioning holding member 22, a clamping holding member 32, and an extrusion pusher 40. Have. Further, a space surrounded by the positioning reference plate 21, the clamping reference plate 31, the positioning holding member 22, and the clamping holding member 32 is a storage unit (work storage unit) of the workpiece assembly 1.

  The block-shaped workpieces 2 are stacked in a plurality of stages, and the block-shaped workpieces 2 gather to form a workpiece assembly 1. Moreover, the block-shaped workpieces 2 are arranged in a plurality of rows, and the block-shaped workpieces 2 are gathered to form a workpiece assembly 1. The block-shaped workpieces 2 are positioned and fixed without using an adhesive. The block-shaped workpiece 2 has a rectangular shape, for example, a rectangular parallelepiped having the same shape.

  The block-shaped workpiece 2 can be made of a hard and brittle material such as a semiconductor material, a glass material, a ceramic, and a magnetic material. The block-shaped workpiece 2 can be an expensive material, for example, a rare earth sintered magnet.

  The workpiece cutting unit 10 is a multi-wire saw system driven by a plurality of guide rollers 12a and 12b in which a plurality of wires 11 arranged at predetermined intervals and guide grooves for stably running these wires 11 are formed. It is a cutting means.

  The wire 11 is a metal wire such as carbon steel. The workpiece cutting unit 10 including the plurality of wires 11 reciprocates the plurality of wires 11 by the guide rollers 12a and 12b. The workpiece assembly 1 to be cut is simultaneously cut into a plurality of piece-like workpieces by the plurality of wires 11. Since the workpiece assembly 1 is simultaneously cut into a plurality of piece-like workpieces, the workpiece cutting device 100 is a multi-wire type cutting device. The wire 11 of the workpiece cutting unit 10 is, for example, a fixed abrasive method.

  The positioning reference plate 21 is parallel to the cutting surface of the workpiece cutting unit 10 by the wire 11 (a vertical surface formed by the wire 11 by relative movement at the time of cutting) and the positioning reference surface 21a in which the positional relationship with the wire 11 is set. Have

  The positioning holding member 22 prevents the workpiece from being displaced in a direction (front-rear direction) perpendicular to the positioning reference surface 21a in a state where the workpiece assembly 1 is pressed against the positioning reference surface 21a as shown by an arrow A during cutting. It is a member for positioning the assembly 1.

  The workpiece cutting device 100 places the positioning holding member 22 opposite to the positioning reference plate 21. The positioning holding member 22 is formed, for example, in the shape of a vertically long bar, and is elastically slidable in the cutting direction (vertical direction) by pressing the workpiece assembly 1 to be positioned against the positioning reference surface 21a. Position. For this reason, the positioning holding member 22 has pressing means such as a spring. Then, the positioning reference plate 21 and the positioning holding member 22 become the workpiece positioning body 20A. Here, the positioning holding member 22 is 1 for each column in the left-right direction (longitudinal direction of the wire) of the block-like workpieces 2 in order to eliminate variations in the pressure on the workpiece assembly 1 composed of the plurality of block-like workpieces 2. There are at least two.

  The clamping reference plate 31 has a clamping reference surface 31a in which a positional relationship that is orthogonal to the longitudinal direction of the wire 11 of the workpiece cutting unit 10 is set. FIG. 2 is a schematic view of the clamping reference plate of the present embodiment. As shown in FIG. 2, the clamping reference plate 31 is an integrated plate-like member that is not divided in the cutting direction (vertical direction) when viewed from the surface on the workpiece assembly side. Moreover, it has a notch in the edge part of the direction (arrow U direction) where the workpiece | work aggregate | assembly 1 is cut | disconnected. This notch has a plurality of comb teeth 31c at the end in the direction (arrow U direction) in which the workpiece assembly 1 is cut. And the some slit 31b is formed between the comb-tooth parts 31c. The plurality of slits 31b are open in the direction in which the assembly 1 is cut (the direction of the arrow U). That is, the end in the direction in which the workpiece assembly 1 is cut (the direction of the arrow U) is formed in a comb shape. The wire 11 passes between the comb tooth portions 31c (slit 31b). The direction in which the workpiece assembly 1 is cut (the direction of the arrow U) is a direction parallel to the direction in which the push-out means described later pushes out the workpiece assembly 1. The direction in which the workpiece assembly 1 is cut (the direction of the arrow U) is also the direction in which the workpiece assembly 1 approaches the wire 11 of the workpiece cutting unit 10.

  The slit 31b is formed extending in the direction in which the assembly 1 is cut (the direction of the arrow U). The width of the slit 31 b is wider than the diameter of the wire 11. The length (direction of arrow U) in which the assembly 1 of the comb teeth portion 31 c is cut is longer than the diameter of the wire 11. Thereby, even if the wire 11 is bent and the wire 11 is lowered in the direction in which the workpiece assembly 1 is cut, the portion in which the comb tooth portion 31c contacts the wire in the direction in which the assembly 1 is cut (arrow U direction). Therefore, the wire 11 does not come into contact with the clamping reference plate 31. Thereby, the behavior of the wire 11 is changed, and the possibility that the cutting accuracy to the workpiece assembly 1 is affected is reduced. In addition, since the work descends between the reference surface of the single member and the holding member for clamping, the work can be stabilized and the possibility that the cutting accuracy to the work may be reduced can be reduced.

  The wire 11 does not need to be penetrated by all the slits 31b. The wire 11 is passed through the slit 31b so as to be between the necessary wires 11 and 11, corresponding to the width of the piece-like workpiece to be cut.

The holding member 32 for holding the workpiece prevents the workpiece assembly 1 from shifting in a direction (left-right direction) orthogonal to the holding reference surface 31a in a state where the workpiece assembly 1 is pressed against the holding reference surface 31a as shown by an arrow B during cutting. It is a member for positioning the assembly 1. FIG. 3 is a schematic view of the holding member for clamping according to the present embodiment. FIG. 4 is an explanatory diagram for explaining a cross-sectional state of the holding member for clamping according to the present embodiment. When viewed from the surface on the workpiece assembly 1 side, as shown in FIG. 3, the holding member 32 for clamping is an integral rod-like member that is not divided in the cutting direction (vertical direction). In addition, a plurality of holding members 32 for holding are arranged, and the wire 11 is passed through the slit 33 between the holding member 32 for holding and the holding member 32 for holding. As shown in FIGS. 3 and 4, the holding member 32 for clamping includes a sliding portion 32 </ b> A and a tapered portion 32 </ b> B. The tapered portion 32B is guided as a guide by the inclined surface when the block-shaped workpiece 2 is loaded. The sliding portion 32A is a pressing surface that slidably holds the block-shaped workpiece 2 in the cutting direction.

  The width of the slit 33 is wider than the diameter of the wire 11. Even if the wire 11 passes through the slit 33 between the holding member 32 for holding and the holding member 32 for holding, the wire 11 is bent and the wire 11 is lowered in the cutting direction of the workpiece assembly 1. And the holding member 32 for clamping do not contact. Thereby, the behavior of the wire 11 is changed, and the possibility that the cutting accuracy to the workpiece assembly 1 is affected is reduced. In addition, what is necessary is just to match | combine the space | interval in which the slit 33 between the holding member 32 for clamping of this embodiment and the holding member 32 for clamping is formed to a wire pitch (parallel wire and wire width).

  In the workpiece cutting device 100, the holding member 32 for clamping is arranged to face the reference plate 31 for clamping. The holding member 32 for clamping is formed, for example, in the shape of a vertically long bar, and is elastically slidable in the cutting direction (vertical direction) by pressing the workpiece assembly 1 to be clamped against the clamping reference surface 31a. Hold it. For this reason, the holding member 32 for clamping has a pressing means by a spring or the like. As shown in FIG. 4, the workpiece cutting device 100 includes a pressing unit 70 that presses the holding member 32 for clamping toward the workpiece assembly 1. The pressing means 70 includes a shaft 71 connected to the sliding portion 32A, an elastic body 72 such as a spring or rubber, and a bearing 73. The pressing means 70 is also used as the pressing means for the positioning holding member 22 described above. The clamping reference plate 31 and the clamping holding member 32 become a workpiece clamping body 30A that is positioned by the workpiece positioning body 20A and clamps both ends of the workpiece assembly 1 positioned in the wire longitudinal direction. Here, the holding member 32 for clamping is 1 for each row | line | column of the front-back direction (wire arrangement direction) of the block-shaped workpiece 2 in order to eliminate the dispersion | variation in the press with respect to the workpiece | work aggregate | assembly 1 which consists of several block-shaped workpieces 2. There are at least two.

  Each holding member 32 for clamping is preferably provided with a plurality of pressing means 70. As a result, the sliding portion 32A can be uniformly pressed against the workpiece assembly 1 and slid. As a result, the sliding portion 32 </ b> A can apply an appropriate pressing force to the block-shaped workpiece 2.

  Further, the clamping reference plate 31 and the clamping holding member 32 are integrated with the positioning reference plate 21 and the positioning holding member 22 in a guide frame shape surrounding the workpiece assembly 1 to be a storage portion of the workpiece assembly 1.

  The extrusion pusher 40 is an extrusion means that extrudes the workpiece assembly 1 in the cutting direction (arrow direction U). The pusher pusher 40 preferably has an area that can uniformly press the entire upper surface of the workpiece assembly 1. The area of the pusher pusher 40 is the opening of the storage portion of the work assembly 1 that is a space surrounded by the positioning reference plate 21, the positioning holding member 22, the clamping reference plate 31, and the clamping holding member 32. It is equal to the area, or is an area that is not in contact with the positioning reference plate 21, the positioning holding member 22, the clamping reference plate 31, and the clamping holding member 32.

  Next, the operation of the workpiece cutting device 100 will be described. FIG. 5 is a flowchart for explaining a cutting process of the workpiece cutting apparatus. 6 and 7 are explanatory views for explaining a cutting process of the workpiece cutting apparatus. FIG. 8 is an explanatory diagram for explaining the behavior of the wire in the workpiece cutting step. 9 and 10 are explanatory diagrams for explaining the cutting process of the workpiece cutting device. The cutting process of the workpiece cutting device 100 will be described along the flowchart of FIG.

  The workpiece cutting device 100 prepares a workpiece receiving plate 80 (step S1). For example, as shown in FIG. 7, the workpiece receiving plate 80 is positioned below the positions of the clamping reference plate 31, the clamping holding member 32, and the wire 11 (the direction in which the pushing means pushes out the workpiece assembly 1). It is installed by a lift mechanism or the like. Although not shown, the workpiece receiving plate 80 is located below the position of the end portion of the positioning reference plate 21 and the positioning holding member 22 in the direction in which the workpiece assembly 1 is cut (the pushing means is the workpiece assembly). 1 in the direction of pushing 1). The workpiece receiving plate 80 is larger than the area of the surface perpendicular to the workpiece traveling direction of the workpiece assembly 1.

  Next, the workpiece cutting device 100 puts the workpiece into the workpiece storage unit of the workpiece cutting device 100 (step S2). The workpiece assembly 1 is thrown into the workpiece storage unit as an assembly in which the end faces of a plurality of block-shaped workpieces are pressed against each other. As shown in FIG. 6, the work aggregate 1 includes block-shaped works 2 </ b> A to 2 </ b> L. As shown in FIG. 1, the workpiece assembly 1 is held between the positioning reference plate 21 and the positioning holding member 22 and between the clamping reference plate 31 and the clamping holding member 32.

  Next, the workpiece cutting device 100 cuts the workpiece (step S3). In the workpiece cutting device 100 shown in FIG. 1, a plurality of wires 11 reciprocate by guide rollers 12a and 12b. The workpiece cutting device 100 positions and fixes a plurality of block-shaped workpieces 2 without using an adhesive. For this reason, the block-like workpieces are pushed out toward the lower wire 11 by the push pusher 40 and cut only by stacking the block-like workpieces 2 in a plurality of stages individually. The extrusion pusher 40 shown in FIG. 7 pushes out the workpiece assembly 1, and the block workpieces 2A to 2L are pushed out. Here, as shown in FIG. 7, the holding member 32 for clamping slides with any of the block-shaped workpieces 2D, 2G, and 2J. The holding member 32 for clamping, together with the positioning reference plate 21, the positioning holding member 22, and the clamping reference plate 31, serves as a guide in the direction in which the pusher pusher 40 pushes out the workpiece assembly 1.

  In the present embodiment, since the workpiece assembly 1 including the block-like workpieces 2A to 2L is not bonded, as shown in FIG. 7, when cutting is finished, the workpiece assembly 1 becomes a piece-like workpiece 2a and falls one by one in the arrow Y direction. It moves on the receiving plate 80. Depending on the state of the wire 11, there may be a time difference in the cutting of the workpiece assemblies 1 even in the block-like workpieces 2 </ b> A, 2 </ b> B, and 2 </ b> C at the same stage on the side where the workpiece assembly 1 is cut. For example, the block-shaped workpiece 2A shown in FIG. 6 is first cut into a piece-shaped workpiece 2a shown in FIG. The piece-like workpiece 2a moved onto the workpiece receiving plate 80 shown in FIG. 7 is in contact with the holding member 32 for clamping and one end surface of the piece-like workpiece 2a, and the workpiece assembly 1 is cut at the distance of contact. A distance T1 in the direction. FIG. 7 illustrates an example in which the piece workpiece 2a moved onto the workpiece receiving plate 80 is in contact with the holding member 32 for clamping and one end surface of the piece workpiece 2a. Instead of 32, any one of the positioning reference plate 21, the positioning holding member 22, and the clamping reference plate 31 may come into contact with one surface of the end surface of the piece workpiece 2a. Further, the piece-like workpiece 2a is in contact with the block-like workpiece 2B being cut by the workpiece cutting unit 10 and one end surface of the piece-like workpiece 2a, and the contact distance is a distance in a direction in which the workpiece assembly 1 is cut. T2. The spatial distance T3 generated in the direction in which the workpiece assembly 1 is cut is the distance between the block-like workpieces 2B and 2C being cut by the workpiece cutting unit 10 and the workpiece receiving plate 80. The spatial distance T3 is smaller than the height WT of the block workpiece. In addition, the space height T4 in the direction in which the workpiece assembly 1 generated by moving the piece-like workpiece 2a onto the workpiece receiving plate 80 is cut is also smaller than the height WT of the block-like workpiece. The space height T4 is the drop height of the piece-like workpiece 2a. Thereby, the fall height of the piece-like workpiece 2a is regulated by the workpiece receiving plate 80 so as to be equal to or less than the individual height of the block-like workpieces 2A to 2L included in the workpiece assembly 1.

  When the space height T4 is, for example, 1/3 or more of the height WT of the block-shaped workpiece to 1/2 or less of the height WT of the block-shaped workpiece, the piece-shaped workpiece 2a is in contact with the end surface of the block-shaped workpiece 2B. The area increases. Thereby, the possibility that the falling piece-like workpiece 2a affects the posture of the block-like workpiece 2B being cut is further reduced.

  As shown in FIG. 7, the piece-like workpiece 2a falls in the direction of the arrow Y, and moves onto the workpiece receiving plate 80 by the weight of the piece-like workpiece 2a with the end face of the holding member 32 for clamping or the block-like workpiece 2B as a guide. While the piece-like workpiece 2a moves on the workpiece receiving plate 80, the upper and lower end surfaces are free, but the left and right and front and rear end surfaces are the positioning reference plate 21, the positioning holding member 22, the clamping reference plate 31, and the clamping plate. The holding member 32, the piece-like workpiece 2a is regulated by any one of the end face of the adjacent block-like workpiece 2B and the cut piece-like workpiece. That is, in the cutting process, in a state where the piece-like workpiece 2a cut by the wire 11 of the workpiece cutting unit 10 is placed on the drop height regulating plate 80, one of the end faces of the piece-like workpiece 2a is a block-like workpiece 2A. It includes a state where it is in contact with an end face of the block-shaped work adjacent to the end face, for example, an end face of the block-shaped work 2B. For this reason, the posture of the falling piece-like work 2a is stabilized. Moreover, the possibility that the falling piece-like workpiece 2a affects the posture of the block-like workpiece 2B being cut is reduced. As a result, the possibility of momentary strong tension occurring in the wire 11 due to the posture of the falling piece-like workpiece 2a and the block-like workpieces 2B, 2C being cut is reduced. Since the wire 11 cuts the block-like workpieces 2B and 2C with a constant tension, the cutting accuracy of the block-like workpieces 2B and 2C is improved.

  For example, the block-shaped workpiece 2A shown in FIG. 8 may bend the wire 11 in the cutting process. As shown in FIG. 8, the wire 11 may bend in the arrow Z direction as the block-shaped work 2A is pushed in the arrow X direction. In the workpiece cutting apparatus 100 according to the first embodiment, as shown in FIG. 8, the clamping reference plate 31 has a slit 31 b that can penetrate the wire 11 at an end portion in a direction in which the workpiece is cut. Thereby, the wire 11 bent in the arrow Z direction does not come into contact with the clamping reference plate 31 itself.

  In addition, as shown in FIG. 8, the workpiece cutting device 100 according to the first embodiment includes a slit 33 that can pass the wire 11 between the holding member 32 for holding and the holding member 32 for holding. Thereby, the wire 11 bent in the arrow Z direction does not contact the holding member 32 for clamping itself.

  The workpiece cutting device 100 cuts the workpiece until the extrusion pusher 40 reaches a predetermined extrusion amount for extruding the workpiece assembly (Step S4, No; Step S3). In the workpiece cutting device 100, when the extrusion pusher 40 has a predetermined extrusion amount for extruding the workpiece assembly (step S4, Yes), the block-shaped workpieces 2A, 2B, and 2C for one stage are the piece-shaped workpieces 2a, 2b, and 2c. Disconnected. FIG. 9 shows a state where the block-shaped workpieces 2A, 2B, and 2C for one stage are placed in a state of being aligned on the workpiece receiving plate 80 as the piece-shaped workpieces 2a, 2b, and 2c.

  Next, the workpiece cutting device 100 carries out the workpiece (step S5). The work receiving plate 80 is pushed down by a lift mechanism or the like as shown in FIG. 10, and the piece-like works 2a, 2b, 2c can be taken out. When all the workpieces have not been cut (step S6, No), the workpiece cutting device 100 prepares a workpiece receiving plate 80 (step S7). Then, in the workpiece cutting device 100, the workpiece is continuously cut (step S3). When all the workpieces have been cut (step S6, Yes), the workpiece cutting device 100 ends the cutting process.

  As described above, the workpiece cutting apparatus 100 according to the present embodiment is configured to cut a plurality of workpiece assemblies 1 that are pressed by overlapping end surfaces of a plurality of block-shaped workpieces 2 into a plurality of piece-like workpieces 2a, 2b, and 2c. A workpiece cutting unit 10 having a wire 11, a positioning reference plate 21 having a positioning reference surface 21a parallel to the cutting surface of the workpiece cutting unit 10 by the wire 11 and set in a positional relationship with the wire 11, and a positioning reference A positioning member for positioning the workpiece assembly 1 so that the workpiece 11 is not displaced in a direction perpendicular to the positioning reference surface 21a in a state where the workpiece 11 is pressed against the surface 21a, and a positioning reference surface 21a A clamping reference plate 31 having a clamping reference plane 31a orthogonal to the clamping reference plate 31 and a direction in which the workpiece is cut so as to be opposed to the clamping reference plate 31 A workpiece holding body 32 having a holding member 32 for holding a slit in the portion and holding both ends of the workpiece assembly 1 positioned in the wire longitudinal direction, and the workpiece assembly 1 with respect to the workpiece cutting portion 10 fixed in position. And an extruding pusher 40 which is an extruding means for extruding in the cutting direction U. The clamping reference plate 31 has a slit 31b at the end in the direction in which the workpiece is cut, and the wire 11 passes through the slit 31b.

  Thus, even if the wire is bent and the wire is lowered in the direction in which the workpiece is cut, the wire does not contact the clamping reference plate. As a result, it is possible to reduce the possibility that the behavior of the wire changes and the cutting accuracy to the workpiece is affected. In addition, since the workpiece descends between the reference surface (clamping reference plate) of the single member and the holding member for clamping, the workpiece can be stabilized and the possibility of affecting the accuracy of cutting the workpiece can be reduced. In addition, since no adhesive is used, a bonding process and a peeling process that require a great amount of time are unnecessary, and the entire cutting process can be significantly shortened.

  In the workpiece cutting device 100 of this embodiment, the clamping reference plate 31 has a slit at the end in the direction in which the workpiece is cut, and the end is formed in a comb-like shape. That is, there is a slit 31b through which the wire 11 can pass between the comb teeth 31c. Thereby, the space | interval of the slit 31b can be shortened and the slit 31b which lets the wire 11 pass, and the slit 31b which does not let the wire 11 pass can be provided. As a result, a plurality of wire intervals can be freely selected. Further, when the wire interval is shortened, the number of piece-like workpieces that can be cut at a time increases. In addition, since the workpiece descends between the reference surface of the single member (the comb teeth of the clamping reference plate) and the holding member for clamping, the workpiece is stable and the possibility of affecting the cutting accuracy of the workpiece is reduced. it can.

  In the workpiece cutting device 100 of this embodiment, it is preferable that there are a plurality of holding members 32 for clamping, and the wire 11 passes between the holding members 32 for holding. As a result, even if the wire is bent and the wire is lowered in the cutting direction, the wire passes between the holding members for holding, so that the wire does not contact the holding member for holding. As a result, it is possible to reduce the possibility that the behavior of the wire changes and the cutting accuracy to the workpiece is affected. In addition, since the workpiece descends between the reference surface (clamping reference plate) of the single member and the holding member for clamping, the workpiece can be stabilized and the possibility of affecting the accuracy of cutting the workpiece can be reduced.

  In the workpiece cutting method according to the present embodiment, a workpiece assembly 1 is prepared in which the end surfaces of a plurality of block-shaped workpieces 2 are pressed against each other, and the workpiece assembly 1 is loaded into the workpiece cutting device 100 (step S2). ) And the workpiece cutting unit 10 having the plurality of wires 11 that simultaneously cut the workpiece assembly 1 into a plurality of piece-like workpieces, the clamping reference plate 31 and the clamping holding member 32 of the workpiece cutting device 100 are assembled to the workpiece. A cutting step (step S3) for holding the body 1 and pushing out the workpiece assembly in a cutting direction (step S3), and a wire penetrating the slit 31b of the clamping reference plate 31 at the end in the cutting direction of the workpiece. The block workpiece 2 is cut.

  Thereby, even if a wire bends and a wire falls in the direction which cut | disconnects the workpiece | work aggregate | assembly 1, a wire does not contact with the reference board for clamping. As a result, it is possible to reduce the possibility that the behavior of the wire changes and the cutting accuracy to the workpiece is affected. In addition, since the workpiece descends between the reference surface (clamping reference plate) of the single member and the holding member for clamping, the workpiece can be stabilized and the possibility of affecting the accuracy of cutting the workpiece can be reduced. In addition, since no adhesive is used, a bonding process and a peeling process that require a great amount of time are unnecessary, and the entire cutting process can be significantly shortened.

(Embodiment 2)
FIG. 11 is a schematic view of a holding member for clamping according to the second embodiment. In the holding member 32 for clamping according to the present embodiment, the end in the direction in which the workpiece is cut has a comb shape, and a plurality of slits (second slits) are formed between the comb portions. There is a special feature. In the following description, the same components as those described in the first embodiment are denoted by the same reference numerals, and redundant descriptions are omitted.

  The holding member 32 for clamping of the present embodiment includes a holding member 35 for holding, a holding member 36 for holding, and a holding member 37 for holding as shown in FIG. 11 when viewed from the surface on the workpiece assembly 1 side. . As shown in FIG. 11, the plurality of holding members 35 for holding, the holding member 36 for holding, and the holding member 37 for holding are each wide and different from the holding member for holding of the first embodiment at every wire interval. It is an integral member that is not divided in the cutting direction (vertical direction). Further, the wire 11 passes through the space S between the holding member 35 for holding and the holding member 36 for holding. Further, the wire 11 passes through the space S between the holding member 36 for holding and the holding member 37 for holding. The plurality of holding members 35 for holding, the holding member 36 for holding, and the holding member 37 for holding, like the holding member for holding of the first embodiment, are sliding portions 35A, 36A, 37A, tapered portions 35B, 36B, 37B.

  The holding member 35 for holding, the holding member 36 for holding, and the holding member 37 for holding have a plurality of comb-tooth portions 35D, 36D, and 37D at the ends in the direction in which the workpiece assembly 1 is cut (arrow U direction). ing. A plurality of slits 35C, 36C, and 37C are formed between the comb teeth portions 35D, 36D, and 37D.

  The width of the space S is wider than the diameter of the wire 11. The wire 11 passes through the space S between the holding member 35 for holding and the holding member 36 for holding, or between the holding member 36 for holding and the holding member 37 for holding, so that the wire 11 is bent and the wire 11 Even if the wire is lowered in the cutting direction, the wire 11 and the holding members 35, 36, 37 for holding are not in contact with each other. Thereby, the behavior of the wire 11 is changed, and the possibility that the cutting accuracy to the workpiece assembly 1 is affected is reduced. In addition, since the workpiece descends between the reference surface (clamping reference plate) of the single member and the holding member for clamping, the workpiece can be stabilized and the possibility of affecting the accuracy of cutting the workpiece can be reduced.

  By providing the space S, the block-shaped workpiece 2 is held by a plurality of holding members 35, 36, and 37 for clamping. Thereby, the pressure to the block-shaped workpiece | work 2 becomes equal. The holding members 35, 36, and 37 for clamping may be a single plate material. In this case, the space S disappears, and the portion where the space S exists becomes a slit between the comb teeth.

  The slits 35 </ b> C, 36 </ b> C, and 37 </ b> C are formed in parallel and extending in the direction in which the assembly 1 is cut (arrow U direction). The slits 35C, 36C, and 37C are wider than the diameter of the wire 11. Each length in the direction (arrow U direction) in which the assembly 1 of the comb teeth portions 35D, 36D, and 37D is cut is longer than the diameter of the wire 11. Further, the wire 11 passes through the slits 35C, 36C, 37C of the holding members 35, 36, 37 for holding. Thereby, even if the wire 11 is bent and the wire 11 is lowered in the cutting direction, the slits 35C, 36C, and 37C are formed to extend in the direction in which the assembly 1 is cut (the direction of the arrow U). The wire 11 does not come into contact with the clamping reference plate 32 including the clamping holding members 35, 36, and 37. Thereby, the behavior of the wire 11 is changed, and the possibility that the cutting accuracy to the workpiece assembly 1 is affected is reduced. In addition, since the workpiece descends between the reference surface (clamping reference plate) of the single member and the holding member for clamping, the workpiece can be stabilized and the possibility of affecting the accuracy of cutting the workpiece can be reduced.

  FIG. 12 is an explanatory view illustrating the relationship between the holding member for clamping and the cutting step according to the second embodiment. The holding member 35 for clamping shown in FIG. 12 will be described as a representative. In FIG. 12, the block-shaped workpiece 2 is held by the holding member 35 for clamping, and the block-shaped workpiece 2 moves in the direction (arrow U direction) in which the assembly 1 is cut by the pusher pusher 40 that is the above-described extrusion means. To do. Even if the wire 11 is lowered in the cutting direction by cutting, the wire 11 and the holding member 35 for clamping do not come into contact with each other. The block-shaped workpiece 2 is cut by the wire 11 to become a piece-shaped workpiece 2Q. The cutting width QT of the piece-like workpiece 2Q is the interval between the wires 11. For example, it can be 10 mm or less. When the holding member 35 for clamping narrows the width of the comb tooth portion 35D, the interval between the slits 35C can be narrowed. Thereby, the cutting width QT of the piece-like workpiece 2Q is reduced.

  As described above, in the workpiece cutting device 100 of the present embodiment, the holding member 35 for clamping has a comb-teeth-shaped end in the cutting direction U, and the wire 11 can penetrate between the comb-tooth portions 35D. It has a long slit 35C in the direction. Thereby, the space | interval of a slit can be shortened and the slit 31b which lets a wire pass, and the slit 31b which cannot pass a wire can be provided. As a result, a plurality of wire intervals can be freely selected. Further, when the wire interval is shortened, the number of piece-like workpieces that can be cut at a time increases.

  Further, in the workpiece cutting method according to the present embodiment, the holding member 35 for holding the wire 11 in the direction in which the space S or the assembly 1 is cut between the holding member 35 for holding and the holding member 36 for holding (the direction of the arrow U). Passes through the slit 35C at the end of the. As a result, even if the wire is bent and the wire is lowered in the cutting direction, the wire passes between the holding members for holding, so that the wire does not contact the holding member for holding. As a result, it is possible to reduce the possibility that the behavior of the wire changes and the cutting accuracy to the workpiece is affected. In addition, since the workpiece descends between the reference surface (clamping reference plate) of the single member and the holding member for clamping, the workpiece can be stabilized and the possibility of affecting the accuracy of cutting the workpiece can be reduced.

(Modification)
FIG. 13 is a perspective view showing a specific configuration of the workpiece cutting device. In the workpiece cutting apparatus 100 according to the first and second embodiments described above, the positioning reference plate 21 and the clamping reference plate 31 have one side as a positioning reference surface 21a and a clamping reference surface 31a. FIG. 14 is a perspective view showing a specific configuration of a workpiece cutting device according to a modification. In the workpiece cutting device 101 of FIG. 14, the positioning reference plate 21 and the clamping reference plate 31 have both sides as a positioning reference surface 21a and a clamping reference surface 31a. For example, a cross-shaped partition plate 90 is provided, and the partition plate 90 is used as the positioning reference plate 21 and the clamping reference plate 31, and the work storage portions for four places are provided, thereby storing the work aggregate 1. Can be increased. The pusher pusher 40 has push parts 40a to 40d for each work storage part. FIG. 15 is a schematic view showing a modification of the work assembly 1. The workpiece assembly 1 is not limited to a block-shaped workpiece having a rectangular parallelepiped shape. For example, a tile-shaped workpiece 300 as illustrated in FIG. 15 may be stacked in multiple stages. The present invention can be applied in the same manner as long as it is formed to have a length that is an integral multiple of the thickness required for the cut piece-shaped workpiece and the end faces at both ends thereof are parallel in a vertical state. In addition, the holding member 32 for clamping of Embodiment 1 and Embodiment 2 mentioned above can be used in combination.

1 work assembly 2,2A~2L block-shaped workpiece 2a, 2b, 2c, 2Q piece-like work 10 workpiece cutting portion 11 wire 21 holding member 31 pinching reference plate 31a sandwiching reference plane 22 positioning positioning reference plate 21a positioned use the reference surface 31b slit 31c comb teeth 32,35,36,37 clamping holding member 33 slit 35C, 36C, 37C slit 35D, 36D, 37D comb teeth 40 extrusion pusher

Claims (5)

A workpiece cutting unit having a plurality of wires that simultaneously cut a plurality of block-like workpieces into a plurality of piece-like workpieces by pressing and overlapping end surfaces of a plurality of block-like workpieces without using an adhesive ;
A positioning reference plate having a positioning reference surface parallel to the wire cutting surface of the workpiece cutting portion and set in a positional relationship with the wire, and the positioning in a state in which the workpiece is pressed against the positioning reference surface A positioning member for positioning the workpiece so as not to deviate in a direction perpendicular to the reference plane, and a workpiece positioning body having
Both ends of the work which the the clamping reference plate having a clamping reference plane orthogonal to the positioning reference surface, and a holding member for clamping which is opposed to the clamping reference plate, located in the wire longitudinal direction A workpiece clamping body for clamping
Extrusion means for extruding the workpiece in a cutting direction in which the workpiece is cut with respect to the workpiece cutting portion fixed in position,
The workpiece clamping body has a plurality of clamping holding members arranged in a direction perpendicular to the cutting direction, and passes the wire between the clamping holding members adjacent to each other,
The workpiece holding device, wherein the holding member for clamping is an integral plate-like member that is not divided in the cutting direction at a position where the wire passes .   2. The workpiece cutting device according to claim 1, wherein an end portion of the clamping reference plate in a direction in which the workpiece is cut is formed in a comb-teeth shape. The clamping holding member has a second slit at an end of the direction in which the workpiece is cut, the work cutting apparatus according to claim 1 or 2, wherein the wire passes through the second slit. Preparing a workpiece as an assembly of pressing and overlapping the end faces of a plurality of block-shaped workpieces without using an adhesive, and feeding the workpiece into a workpiece cutting device; and
The work cutting portion having a plurality of wires for cutting the workpiece simultaneously into a plurality of pieces like work, the positional relationship is set between the wire parallel the work cutting apparatus to cut surface by the wire of the workpiece cutting portion A positioning reference plate having a positioning reference surface, and a positioning holding member that positions the workpiece so as not to be displaced in a direction perpendicular to the positioning reference surface in a state where the workpiece is pressed against the positioning reference surface And a workpiece positioning body, a clamping reference plate having a clamping reference surface orthogonal to the positioning reference surface, and a clamping holding member disposed opposite to the clamping reference plate , It includes a workpiece holding member for holding the opposite ends of the workpiece positioned on the wire longitudinal direction, and the work positioning member and said workpiece holding member holding said workpiece Includes, a cutting step of extruding the cutting direction in which the workpiece is cut,
The workpiece clamping body has a plurality of clamping holding members arranged in a direction orthogonal to the cutting direction, and the wire passes between adjacent clamping holding members,
The workpiece holding method, wherein the holding member for clamping is an integral plate member that is not divided in the cutting direction at a position where the wire passes .   5. The workpiece cutting method according to claim 4, wherein the wire passes through a second slit provided between the holding members for clamping or at an end portion of the holding member for clamping in a direction in which the workpiece is cut.

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