JP6540554B2 - Method of manufacturing member and manufacturing device of member - Google Patents

Description

  The present invention relates to a method of manufacturing a member having a protrusion, and a manufacturing apparatus of the member.

  Conventionally, coining processing, which is one of the methods for forming asperities on the outer wall surface of a member, transfers a mold having asperities while restraining the whole member. For example, in Patent Document 1, after setting a member in a mold for restraining the member, the protrusion is applied to the member by pressing a forming punch having a recess corresponding to the size of the protrusion formed on the outer wall of the member. A method of manufacturing the member to be formed is described.

JP 2011-212735 A

  However, when the method for manufacturing a member described in Patent Document 1 is applied to a member having a machined outer shape or a hollow member, the outer shape or the hollow portion of the member may be deformed when the member is restrained. In addition, when it is going to suppress deformation of the member, the restraint of the member becomes insufficient, and the processing accuracy of the formed projection may be lowered.

  An object of the present invention is to provide a method of manufacturing a member that improves processing accuracy of the protrusion while preventing deformation of the member on which the protrusion is formed.

The present invention is a method of manufacturing a member having a protrusion, and includes an abutting step and a protrusion forming step.
In the abutting step, the tip end surfaces of at least two or more punches at positions separated by a predetermined distance are brought into contact with the outer wall surface of the member.
In the projection forming step, the first punch of at least two or more punches is subjected to a first force acting in a direction intersecting the outer wall surface, and is acted in a direction intersecting the first force acting in the member. The second force is applied to the second punch of at least two or more punches to form a projection on the outer wall surface.

In the method of manufacturing a member according to the present invention, in the projection forming step, a first force in a direction intersecting the outer wall surface is applied to a first punch among at least two punches brought into contact with the outer wall surface of the member. Further, a second punch acting in a direction intersecting with a direction in which the first force acts in the member on a second punch whose tip end surface is in contact with the outer wall surface of the member at a predetermined distance from the first punch Exert the power of As a result, since the material in the vicinity of the outer wall surface of the member is moved between the first punch and the second punch, the projection can be formed. In this method, the force is applied only to the material in the vicinity of the outer wall surface where the projections of the member are formed, so that it becomes unnecessary to restrain the entire member. Thereby, it is possible to prevent the member from being deformed at the time of forming the projection.
Further, in the method of manufacturing a member of the present invention, the shape of the protrusion can be arbitrarily changed by the combination of the magnitude and direction of the first force and the magnitude and direction of the second acting force. Thus, the processing accuracy of the protrusions can be improved.

Furthermore, the present invention is a manufacturing apparatus of a member having a protrusion, which includes at least two or more punches and a force generation unit.
The punch is provided at a position separated by a predetermined distance, and has a tip surface capable of abutting on the outer wall surface of the member.
The action force generator causes the first punch of at least two or more punches to exert a first force acting in a direction intersecting the outer wall surface, and in a direction intersecting the direction in which the first force acts in the member. It is possible to exert an acting second force on the second punch of at least two or more punches.

In the apparatus for manufacturing a member of the present invention, it is possible to apply two forces acting in intersecting directions in the member to at least two or more punches provided at positions separated by a predetermined distance. Thus, the projection can be formed because the material in the vicinity of the outer wall of the member can be moved between the at least two punches while the at least two punches are approaching each other. At this time, since the two forces act only on the material in the vicinity of the outer wall surface of the member, it is not necessary to restrain the entire member. Thereby, it is possible to prevent the member from being deformed at the time of forming the projection.
Further, in the member manufacturing apparatus of the present invention, the shape of the projection can be arbitrarily changed by the combination of the magnitude and direction of the first force and the magnitude and direction of the second acting force. Thus, the processing accuracy of the protrusions can be improved.

It is a schematic diagram of the manufacturing apparatus of the member by 1st embodiment of this invention. It is the II section enlarged view of FIG. It is a schematic diagram of a fuel supply system which has a fuel pressure sensor manufactured with a manufacturing method of a member by a first embodiment of the present invention. It is a fragmentary sectional view of a fuel pressure sensor manufactured with a manufacturing method of a member by a first embodiment of the present invention. It is a schematic diagram of the pressure receiving part manufactured with the manufacturing method of the member by 1st embodiment of this invention. It is the elements on larger scale of the pressure receiving part manufactured by the manufacturing method of the member by a first embodiment of the present invention. It is a flowchart of the manufacturing method of the member by 1st embodiment of this invention. It is a schematic diagram which shows the operating state of the manufacturing apparatus of the member in the manufacturing method of the member by 1st embodiment of this invention. It is the IX section enlarged view of FIG. It is a schematic diagram explaining the effect of the manufacturing apparatus of the member by 1st embodiment of this invention. It is a schematic diagram explaining the effect of the manufacturing apparatus of the member by 2nd embodiment of this invention. It is a schematic diagram explaining the effect of the manufacturing apparatus of the member by 3rd embodiment of this invention. It is a flowchart of the manufacturing method of the member by 4th embodiment of this invention. It is a schematic diagram explaining the action | operation of the manufacturing apparatus of the member by 4th embodiment of this invention. It is a schematic diagram explaining the action | operation of the manufacturing apparatus of the member of a comparative example.

  Hereinafter, a plurality of embodiments of the present invention will be described based on the drawings.

First Embodiment
An apparatus for manufacturing a member and a method for manufacturing a member according to a first embodiment of the present invention will be described based on FIGS. The protrusion forming device 1 as the “member manufacturing device” according to the present embodiment is used to form a protrusion 95 of a fuel pressure sensor 90 capable of detecting the pressure of fuel supplied to a combustion chamber of an internal combustion engine.

First, the fuel supply system 5 to which the fuel pressure sensor 90 is applied will be described based on FIG.
The fuel supply system 5 is a gasoline direct injection system capable of directly injecting gasoline into a combustion chamber of an internal combustion engine (not shown). The fuel supply system 5 includes a pressure pump 6, a pressure rail 7, a fuel injection valve 8, a fuel pressure sensor 90, and the like.
In the fuel supply system 5, gasoline pressurized to a pressure capable of being injected into the combustion chamber in the pressure pump 6 flows in the pressure rail 7 (open arrow Ff5). The gasoline in the pressure rail 7 directly injects gasoline into the combustion chamber corresponding to each fuel injection valve 8 by a plurality of fuel injection valves 8 provided on the pressure rail 7.

  The fuel pressure sensor 90 is provided on the pressure rail 7. The fuel pressure sensor 90 includes a pressure receiving unit 91 as a "member", a strain detection unit 92, a calculation unit 93, and the like.

The pressure receiving portion 91 is formed of metal. As shown in FIG. 4, the pressure receiving portion 91 is formed of a screw portion 911, a flange portion 912, a deformable portion 913, and the like.
In the screw portion 911, a screw groove is formed on the outer wall in the radially outward direction. The fuel pressure sensor 90 is assembled to the pressure rail 7 by screwing the screw groove of the pressure rail 7 with the screw groove of the screw portion 911.
The flange portion 912 is provided at the end of the screw portion 911 opposite to the side assembled to the pressure rail 7. The flange portion 912 is formed in a substantially hexagonal shape having an outer diameter larger than the outer diameter of the screw portion 911. The flange portion 912 has grooves 914 and 915 in which the strain detection portion 92 and the calculation portion 93 can be fitted.
The deformable portion 913 is provided substantially at the center of the flange portion 912 and on the opposite side to the screw portion 911. The deformable portion 913 is formed to be thinner than the screw portion 911 and the flange portion 912.
The pressure receiving portion 91 has a communication passage 910 communicating with the inside of the pressure rail 7. The communication passage 910 is formed to pass through the screw portion 911 and the flange portion 912 so that the deformable portion 913 is at the bottom. When the gasoline flowing in the pressure rail 7 flows into the communication passage 910, the deformable portion 913 is deformed according to the pressure of the gasoline in the communication passage 910.

The strain detection unit 92 is provided on the opposite side of the threaded portion 911 of the flange portion 912. The strain detection unit 92 includes a strain sensor 921, an output electrode 922, a positioning unit 923, a ground electrode 924, and the like, as shown in FIG.
The strain sensor 921 detects the amount of deformation of the deformable portion 913, and outputs an electrical signal according to the amount of deformation.
The output electrode 922 is electrically connected to the strain sensor 921 and the calculation unit 93. The output electrode 922 outputs the electrical signal output from the strain sensor 921 to the calculator 93.
The positioning unit 923 is provided on the opposite side of the strain sensor 921 to the output electrode 922. The positioning unit 923 can perform alignment between the strain detection unit 92 and the calculation unit 93 in assembling the pressure receiving unit 91 and the calculation unit 93.
The ground electrode 924 is provided at a position not interfering with the output electrode 922 and the positioning portion 923, specifically, in a direction substantially perpendicular to the direction connecting the output electrode 922 and the positioning portion 923 viewed from the strain sensor 921. . The ground electrode 924 is electrically connected to the projection 95 of the pressure receiving portion 91.

  The calculating unit 93 is provided so as to sandwich the strain detecting unit 92 with the pressure receiving unit 91. The calculating unit 93 is assembled to the pressure receiving unit 91 using the O-ring 931. The calculator 93 includes a calculation processor 932 electrically connected to the strain sensor 921. The calculation processing unit 932 is a known microcomputer configured mainly of a CPU, a ROM, and a RAM. The calculation processing unit 932 calculates the amount of deformation of the deformable portion 913 based on the electrical signal output from the strain detection unit 92.

Here, the position and the shape of the protrusion 95 formed by the protrusion forming device 1 will be described based on FIGS.
The protrusion 95 is formed on the flange portion 912 of the pressure receiving portion 91. Specifically, it is a direction substantially perpendicular to the direction connecting the output electrode 922 and the positioning portion 923 as viewed from the strain sensor 921 and is a “outer wall surface of the member” on which the strain detection portion 92 of the pressure receiving portion 91 is provided. The outer wall 916 of the Grooves 96 and 97 formed by the first punch 10 as a "first punch" and the second punch 20 as a "second punch" included in the protrusion forming apparatus 1 are formed on both sides of the protrusion 95. ing. The inner wall 951 forming the groove 96 and the inner wall 952 forming the groove 97 form the side surfaces of the projection 95. In the present embodiment, the protrusion 95 is formed, for example, such that the width L 951 is 0.5 mm. The grooves 96 and 97 are formed such that the widths L96 and L97 are 3.0 mm and the depths D96 and D97 are 0.5 mm. The cross-sectional shapes of the protrusions 95 and the grooves 96 and 97 shown in FIGS. 8 to 10 change the relationship between the size of the protrusions 95 and the sizes of the grooves 96 and 97 in order to make the drawing easy to see.

  Next, the configuration of the protrusion forming apparatus 1 will be described based on FIGS. The projection forming apparatus 1 includes a first punch 10, a first punch guide 15 as a "punch guide", a second punch 20, a second punch guide 25 as a "punch guide", a central punch guide 30, and a force generation unit 35. Equipped with FIG. 1 shows a state in which the first punch 10 and the second punch 20 are in contact with the outer wall surface 916 of the pressure receiving portion 91. In FIG. 1, a central axis C95 of the projection 95 formed by the projection molding apparatus 1 is shown. In FIGS. 1, 2, 8 to 10, for convenience, the force generation of the projection forming apparatus 1 as viewed from the projection forming apparatus 1 is the “ground” side of the side on which the pressure receiving part 91 is placed. The side where the portion 35 is provided is referred to as the "heaven" side. However, in the positional relationship between the protrusion forming device 1 and the pressure receiving portion 91, the relationship between the top and bottom is not limited to this.

  The first punch 10 is a substantially rod-like member formed of a metal having a hardness higher than that of the pressure receiving portion 91. The first punch 10 is provided to be capable of reciprocating with respect to the outer wall surface 916, and has a tip end surface 11, a protrusion forming surface 12, an outer sliding surface 13 as a "punch inclined surface", an inner sliding surface 14 and the like.

  The end surface 11 is formed to be able to abut the outer wall surface 916 of the pressure receiving portion 91 at one end of the first punch 10. In the present embodiment, as shown in FIG. 2, the virtual plane Vp 11 including the distal end surface 11 is formed to intersect the outer wall surface 916 when the distal end surface 11 is in contact with the outer wall surface 916. Further, in the present embodiment, when the distal end surface 11 is in contact with the outer wall surface 916, the distal end surface 11 is formed to be away from the outer wall surface 916 as the virtual plane Vp11 approaches the second punch 20.

  The projection forming surface 12 is formed on the second punch 20 side of the first punch 10. The protrusion forming surface 12 defines the shape of the inner wall 961 of the groove 96, that is, the side surface of the protrusion 95.

  The outer sliding surface 13 is formed on the opposite side of the first punch 10 to the second punch 20. The outer sliding surface 13 is formed to approach the central axis C95 as it approaches the tip surface 11. The outer sliding surface 13 can slide on the first punch guide 15.

  The inner sliding surface 14 is provided on the top side of the projection forming surface 12 and substantially in parallel with the outer sliding surface 13. The inner sliding surface 14 is slidable on the central punch guide 30.

The first punch guide 15 is provided radially outward of the first punch 10 as viewed from the central axis C95. The first punch guide 15 has a punch guide portion 16, a cam guide portion 17, and the like.
The punch guide portion 16 is provided on the ground side of the first punch guide 15 and is in contact with the outer wall surface 916. The punch guide portion 16 has a punch sliding surface 161 which can slide on the outer sliding surface 13. The punch guide portion 16 guides the movement of the first punch 10 while in contact with the outer wall surface 916.
The cam guide portion 17 is provided on the top side of the first punch guide 15. The cam guide portion 17 is formed slidably on a first cam block 36 described later. The cam guide portion 17 guides the movement of the first cam block 36 in the vertical direction.

  The second punch 20 is a substantially rod-like member formed of a metal having a hardness higher than that of the pressure receiving portion 91. The second punch 20 is provided at a position separated from the first punch 10 by a predetermined distance, and can reciprocate with respect to the outer wall surface 916. The second punch 20 has a tip end surface 21, a protrusion forming surface 22, an outer sliding surface 23 as a “punch inclined surface”, an inner sliding surface 24 and the like.

  The end surface 21 is formed to be able to abut on the outer wall surface 916 of the pressure receiving portion 91 at one end of the second punch 20. In the present embodiment, as shown in FIG. 2, the virtual plane Vp 21 including the distal end surface 21 is formed to intersect the outer wall surface 916 when the distal end surface 21 is in contact with the outer wall surface 916. Further, in the present embodiment, when the distal end surface 21 is in contact with the outer wall surface 916, the distal end surface 21 is formed to be separated from the outer wall surface 916 as the virtual plane Vp 21 approaches the first punch 10.

  The projection forming surface 22 is formed on the first punch 10 side of the second punch 20. The protrusion forming surface 22 defines the shape of the inner wall 971 of the groove 97, that is, the side surface of the protrusion 95.

  The outer sliding surface 23 is formed on the side opposite to the first punch 10 of the second punch 20. The outer sliding surface 23 is formed to approach the central axis C <b> 95 as it approaches the distal end surface 21. The outer sliding surface 23 can slide on the second punch guide 25.

  The inner sliding surface 24 is provided on the top side of the projection forming surface 22 and substantially parallel to the outer sliding surface 23. The inner sliding surface 24 is slidable on the central punch guide 30.

The second punch guide 25 is provided radially outward of the second punch 20 as viewed from the central axis C95. The second punch guide 25 has a punch guide portion 26, a cam guide portion 27 and the like.
The punch guide portion 26 is provided on the ground side of the second punch guide 25 and is in contact with the outer wall surface 916. The punch guide portion 26 has a punch sliding surface 261 that can slide on the outer sliding surface 23. The punch guide portion 26 guides the movement of the second punch 20 while in contact with the outer wall surface 916.
The cam guide portion 27 is provided on the top side of the second punch guide 25. The cam guide portion 27 is formed slidably on a second cam block 37 described later. The cam guide portion 27 guides the movement of the second cam block 37 in the vertical direction.

  The central punch guide 30 is provided between the first punch 10 and the second punch 20. The central punch guide 30 is formed slidably on the inner sliding surfaces 14, 24. The central punch guide 30 guides the movement of the first punch 10 and the second punch 20. The central punch guide 30 guides the vertical movement of the first cam block 36 and the second cam block 37.

  The acting force generation unit 35 has a first cam block 36, a second cam block 37, and a press unit 38. The acting force generation unit 35 generates a force acting on the first punch 10 and the second punch 20 so that the first punch 10 and the second punch 20 are pressed against the outer wall surface 916.

  The first cam block 36 is formed so as to be reciprocally movable in the vertical direction while being sandwiched between the cam guide portion 17 of the first punch guide 15 and the central punch guide 30. The first cam block 36 has a cam inclined surface 361 on the ground side. The cam inclined surface 361 is inclined to be away from the central axis C95 as it approaches the projection 95, and is formed so as to be able to abut on the end surface 100 on the opposite side to the front end surface 11 of the first punch 10. The first cam block 36 is connected to the press unit 38.

  The second cam block 37 is formed so as to be movable in the vertical direction while being sandwiched between the cam guide portion 27 of the second punch guide 25 and the central punch guide 30. The second cam block 37 has a cam inclined surface 371 on the ground side. The cam inclined surface 371 is inclined to be away from the central axis C95 as it approaches the protrusion 95, and is formed so as to be able to abut on the end surface 200 on the opposite side to the end surface 21 of the second punch 20. The second cam block 37 is connected to the press unit 38.

  The press unit 38 is located on the top side of the first cam block 36 and the second cam block 37. The pressing unit 38 can generate a force that presses the first punch 10 and the second punch 20 against the outer wall surface 916 through the first cam block 36 and the second cam block 37.

  Next, a protrusion forming process as a “manufacturing method of a member” using the protrusion forming device 1 will be described. FIG. 7 shows a flowchart of the protrusion forming process.

First, in step (hereinafter simply referred to as "S") 101, the pressure receiving portion 91 on which the screw portion 911 and the flange portion 912 and the like are already formed is set on a support table (not shown). In S101, the pressure receiving portion 91 is set on the support table so that relative movement with respect to the protrusion forming device 1 can not be performed. For example, in the case of the pressure receiving portion 91, the pressure receiving portion 91 is fixed by screwing to the support table using the screw portion 911.
Next, the first punch 10 and the second punch 20 are brought into contact with the outer wall surface 916 of the pressure receiving portion 91 in S102 as the “contacting step”. The schematic diagram which showed the state of the protrusion molding apparatus 1 at this time is FIG. In S102, the front end surfaces 11 and 21 are brought into contact with the outer wall surface 916 while leaving a predetermined distance between the first punch 10 and the second punch 20.

Next, the first punch 10 and the second punch 20 are pressed against the outer wall surface 916 of the pressure receiving portion 91 in S103 as the “projection forming step”.
In S103, the pressing forces F01 and F02 (white arrows F01 and F02 shown in FIG. 8) in the ground direction generated by the pressing unit 38 are transferred through the first cam block 36 and the second cam block 37 to the first punch 10 and the second punch. It acts on two punches 20. Since the first cam block 36 and the first punch 10 are in contact with the cam inclined surface 361 inclined with respect to the central axis C95 and the end surface 100, the ground pressing force F01 generated by the press portion 38 Is a pressing force F11 as a “first force” acting in a direction inclined with respect to the central axis C95. Further, since the second cam block 37 and the second punch 20 are in contact with the cam inclined surface 371 inclined with respect to the central axis C 95 and the end surface 200, the press in the ground direction generated by the press portion 38 The force F02 is a pressing force F12 as a "second force" acting in a direction inclined with respect to the central axis C95.

  The direction of the pressing force F11 acting on the outer wall surface 916 from the tip end surface 11 in the first punch 10 (two-dot chain line A11 in FIG. 9) and the direction of the pressing force F12 acting on the outer wall surface 916 from the tip surface 21 in the second punch 20 (The two-dot chain line A12 in FIG. 9) intersects inside the pressure receiving portion 91. As a result, as shown in FIG. 9, the material in the vicinity of the outer wall surface 916 is drawn between the first punch 10 and the second punch 20, and the projection 95 is formed between the first punch 10 and the second punch 20. Be done.

  The movement of the material of the pressure receiving portion 91 when the first punch 10 and the second punch 20 are pressed against the outer wall surface 916 will be described based on FIG. Here, the movement of the material of the pressure receiving portion 91 in the vicinity of the first punch 10 in which the pressing force F11 acts will be described, but the same is true in the vicinity of the second punch 20 in which the pressing force F12 acts.

When the first punch 10 is pressed against the outer wall surface 916 in S103, a pressing force F11 acts on the outer wall surface 916 via the front end surface 11. The pressing force F11 acts in a direction substantially perpendicular to the front end surface 11 as indicated by a two-dot chain line A11.
Here, in FIG. 9, the depth Dp1 at which the first punch 10 intrudes into the pressure receiving portion 91 is taken. Further, in FIG. 9, assuming that the length on the outer wall surface 916 of the first punch 10 which has entered the pressure receiving portion 91 is a length Lp 1, the volume of the material of the pressure receiving portion 91 moved by the pressing of the first punch 10 is The length Rp1 (see FIG. 5) of the groove 96 is the product of the depth Dp1 and the length Lp1. That is, when the first punch 10 is pressed against the outer wall surface 916, a material having a volume corresponding to the product of the length Rp1, the depth Dp1, and the length Lp1 is moved. This volume is the same as the volume of the groove 96.

  A portion of the material of the pressure receiving portion 91 moved by the pressing of the first punch 10 moves in the direction approaching the central axis C95 along the protrusion forming surface 12 from the tip end surface 11 (solid arrow F111 in FIG. 9). On the other hand, a part of the material moves in a direction away from the central axis C95 from the tip end face 11 along the outer sliding face 13 (solid arrow F112 in FIG. 9). Thereby, the groove 96 is formed in the area where the material is moved by the pressing of the first punch 10, and the material of the pressure receiving portion 91 moving to the top side along the protrusion forming surface 12 forms the protrusion 95 of width L951. It will be.

  Further, when the protrusions 95 are formed in S103, as shown in FIG. 10, reaction force F10, F20 from the protrusions 95 is formed on the protrusion forming surface 12 of the first punch 10 and the protrusion forming surface 22 of the second punch 20. Works. In the present embodiment, the first punch guide 15 exerts on the first punch 10 an opposing force F15 that opposes the reaction force F10. Further, an opposing force F25 against the reaction force F20 is exerted on the second punch 20 by the second punch guide 25.

Next, in S104, the first punch 10 and the second punch 20 are separated from the outer wall surface 916.
Finally, in S105, the setting of the pressure receiving portion 91 on the support table is released.
In the projection forming process according to the present embodiment, the projections 95 are thus formed at predetermined positions of the pressure receiving portion 91.

  In the present embodiment, in S103, the pressing force F11 in the direction intersecting the outer wall surface 916 is applied to the first punch 10 brought into contact with the outer wall surface 916 of the pressure receiving portion 91. Further, pressing in a direction intersecting the pressure receiving portion 91 with the direction in which the pressing force F11 acts on the second punch 20 in contact with the outer wall surface 916 of the pressure receiving portion 91 at a predetermined distance from the first punch 10 Force F12 is applied. Thereby, the material in the vicinity of the outer wall surface 916 between the first punch 10 and the second punch 20 moves, and the projection 95 can be formed. Therefore, unlike the coining method, it is not necessary to restrain the entire pressure receiving portion 91, so that deformation of the pressure receiving portion 91 can be prevented when the projection 95 is formed. Moreover, since the physique of the projection forming apparatus 1 is relatively small, the manufacturing cost can be reduced as compared with the method of forming the projection by cutting.

  Further, in the present embodiment, since the projection 95 can be formed without constraining the entire pressure receiving portion 91, deformation due to restraint of the communication passage 910 and the deformable portion 913 which the pressure receiving portion 91 has can be prevented. . Therefore, it is possible to prevent a decrease in processing accuracy in the entire manufacturing process of the pressure receiving portion 91.

  In the present embodiment, the shape of the projection 95 can be arbitrarily changed by the combination of the size and direction of the pressing force F11 and the size and direction of the pressing force F12. Thereby, the processing accuracy of the protrusion 95 can be improved.

  Further, the protrusion forming device 1 is provided with a first punch guide 15 provided radially outward of the first punch 10 as viewed from the central axis C95, and a second provided radially outward of the second punch 20 as viewed from the central axis C95. A punch guide 25 is provided.

Here, as a comparative example of the projection forming apparatus 1, an operation of the projection forming apparatus capable of forming the projections by applying a pressing force substantially parallel to each of two punches capable of forming the projections will be described based on FIG. Do.
First, the two punches 81 and 82 at positions separated by a predetermined distance are brought into contact with the outer wall surface 801 of the workpiece 80. Approximately parallel pressing forces F811 and F821 act on the punches 81 and 82, respectively, to form two grooves 86 and 87 in the outer wall surface 801.
Next, acting forces F812 and F822 are applied to the punch 81 in which the groove 86 is formed and the punch 82 in which the groove 87 is formed so as to move in the direction in which the punch 81 and the punch 82 collide. At this time, since the reaction forces F81 and F82 from the projections 85 formed between the punch 81 and the punch 82 act on the punches 81 and 82, there is a possibility that the end portions of the punches 81 and 82 may be deformed. If the tip portion is deformed, the shape of the projection 85 may not be a desired shape.

  In the protrusion forming device 1, while the first punch 10 and the second punch 20 are pressed against the outer wall surface 916, the first punch 10 and the second punch 25 are viewed from the central axis C95. It slides on the first punch 10 and the second punch 20 in the radially outward direction of the second punch 20. Thereby, even if the reaction forces F10 and F20 from the projection 95 act on the first punch 10 and the second punch 20, the opposing force F15 from the first punch guide 15 and the opposing force F25 from the second punch guide 25 Since the first punch 10 and the second punch 20 act, deformation of the first punch 10 and the second punch 20 can be prevented. Therefore, the processing accuracy of the protrusion 95 can be further improved.

  In the present embodiment, the projection 95 is formed on the pressure receiving portion 91 in which the flange portion 912 or the like formed in a substantially hexagonal shape is formed. At this time, the protrusion 95 may be formed at a position where the ground electrode 924 is to be provided so as to be weldable with the ground electrode 924. Thereby, the position of the protrusion 95 with respect to the flange part 912 which has a specific shape can be determined precisely.

  The projection forming apparatus 1 exerts the pressing forces F01 and F02 in the ground direction generated by the pressing portion 38 on the first punch 10 and the second punch 20 by utilizing the cam inclined surfaces 361 and 421 and the end faces 100 and 200. Two pressing forces F11 and F12 in different directions can be used. As a result, the structure of the projection forming apparatus 1 can be simplified and the equipment cost can be reduced.

Second Embodiment
Next, a member manufacturing apparatus according to a second embodiment of the present invention will be described based on FIG. The second embodiment differs from the first embodiment in the shapes of the first punch and the second punch. In addition, the same code | symbol is attached | subjected to the site | part substantially the same as 1st embodiment, and description is abbreviate | omitted.

  The projection forming apparatus 2 as the “member manufacturing apparatus” according to the second embodiment includes a first punch 40 as a “first punch”, a first punch guide 15, and a second punch 50 as a “second punch”. , A second punch guide 25, a central punch guide 30, and an acting force generation unit 35.

  The first punch 40 is a substantially rod-like member formed of a metal having a hardness higher than that of the pressure receiving portion 91. The first punch 40 is provided to be capable of reciprocating with respect to the outer wall surface 916, and has a tip end surface 41, a protrusion forming surface 12, an outer sliding surface 13, an inner sliding surface 14, and the like.

The end surface 41 is formed to be able to abut the outer wall surface 916 of the pressure receiving portion 91 at one end of the first punch 40. In the present embodiment, as shown in FIG. 11, the tip end surface 41 is formed such that a virtual plane Vp 41 including the tip end surface 41 faces the outer wall surface 916.
The outer sliding surface 13 is formed to approach the central axis C <b> 95 as it approaches the distal end surface 41. The outer sliding surface 13 can slide on the first punch guide 15.

  The second punch 50 is a substantially rod-like member formed of a metal having a hardness higher than that of the pressure receiving portion 91. The second punch 50 is provided to be capable of reciprocating with respect to the outer wall surface 916, and has a tip end surface 51, a protrusion forming surface 22, an outer sliding surface 23, an inner sliding surface 24, and the like.

The end surface 51 is formed to be able to abut on the outer wall surface 916 of the pressure receiving portion 91 at one end of the second punch 50. In the present embodiment, as shown in FIG. 11, the distal end surface 51 is formed such that a virtual plane Vp 51 including the distal end surface 51 faces the outer wall surface 916.
The outer sliding surface 23 is formed to approach the central axis C <b> 95 as it approaches the distal end surface 51. The outer sliding surface 23 can slide on the second punch guide 25.

  Next, the movement of the material of the pressure receiving portion 91 when the first punch 40 and the second punch 50 are pressed against the outer wall surface 916 will be described based on FIG. In FIG. 11, the movement of the material of the pressure receiving portion 91 in the vicinity of the first punch 40 where the pressing force F41 in the direction of the imaginary line A41 acts is described, but the second punch 50 where the pressing force F51 in the direction of the imaginary line A51 acts The same is true in the vicinity. In the present embodiment, the virtual line A41 and the virtual line A51 intersect in the pressure receiving portion 91.

  When the first punch 40 is pressed against the outer wall surface 916 by the pressing force F41, the material of the pressure receiving portion 91 moves as indicated by solid arrows F411 and F412. At this time, the pressing force F41 acts so as to form an obtuse angle of, for example, about 140 degrees on the side of the protrusion forming surface 12 with respect to the tip end surface 41. A portion of the material of the pressure receiving portion 91 moved by the pressing of the first punch 40 moves in a direction approaching the central axis C95 along the protrusion forming surface 12 from the tip end surface 41 (solid arrow F411 in FIG. 11). On the other hand, the remaining material moves away from the central axis C95 along the outer sliding surface 13 from the tip end surface 41 (solid arrow F412 in FIG. 11).

  Here, when the volume of the material of the pressure receiving portion 91 moved by the pressing of the first punch 40 is the same volume as in the first embodiment, that is, the product of the length Rp1, the length Lp1, and the depth Dp1, In the present embodiment, the amount of material moving from the end face 41 along the protrusion forming surface 12 in the direction approaching the central axis C95 is smaller than that in the first embodiment. Further, the amount of the material moving from the end surface 41 along the outer sliding surface 13 in the direction away from the central axis C95 is larger than that in the first embodiment. As a result, the width L 952 of the protrusion 95 formed by the protrusion forming device 2 becomes narrower than the width L 951 of the protrusion 95 in the first embodiment.

  In the projection forming device 2, when the direction in which the pressing forces F41 and F51 act and the tip surfaces 41 and 51 make a relatively small obtuse angle, the pressure receiving portion 91 moves by pressing the first punch 40 and the second punch 50. The ratio of the movement direction of the material of (1) is changed as compared with the first embodiment. As a result, in the present embodiment, the amount of the material forming the protrusions 95 is smaller than in the first embodiment, so the width L 952 of the protrusions 95 becomes smaller. Therefore, the second embodiment can achieve the same effect as the first embodiment and can make the width of the projection 95 smaller than that of the first embodiment.

Third Embodiment
Next, an apparatus for manufacturing a member according to a third embodiment of the present invention will be described based on FIG. The third embodiment differs from the first embodiment in the shapes of the first punch and the second punch. In addition, the same code | symbol is attached | subjected to the site | part substantially the same as 1st embodiment, and description is abbreviate | omitted.

  The protrusion forming apparatus 3 as the “member manufacturing apparatus” according to the third embodiment includes a first punch 60 as a “first punch”, a first punch guide 15, and a second punch 70 as a “second punch”. , A second punch guide 25, a central punch guide 30, and an acting force generation unit 35.

  The first punch 60 is a substantially rod-like member formed of a metal having a hardness higher than that of the pressure receiving portion 91. The first punch 60 is provided so as to be capable of reciprocating with respect to the outer wall surface 916, and has a tip surface 61, a protrusion forming surface 12, an outer sliding surface 13, an inner sliding surface 14 and the like.

The end surface 61 is formed to be able to abut the outer wall surface 916 of the pressure receiving portion 91 at one end of the first punch 60. In the present embodiment, as indicated by a two-dot chain line 60 in FIG. 12, when the end surface 61 is in contact with the outer wall surface 916, the virtual plane Vp 61 including the end surface 61 is used as the second punch 70. As it approaches, it is formed so that the outer wall surface 916 may be approached. The two-dot chain line 60 indicates the position of the first punch 60 when the distal end surface 61 is in contact with the outer wall surface 916.
The outer sliding surface 13 is formed to approach the central axis C <b> 95 as it approaches the distal end surface 61. The outer sliding surface 13 can slide on the first punch guide 15.

  The second punch 70 is a substantially rod-like member formed of a metal having a hardness higher than that of the pressure receiving portion 91. The second punch 70 is provided to be capable of reciprocating with respect to the outer wall surface 916, and has a tip end surface 71, a protrusion forming surface 22, an outer sliding surface 23, an inner sliding surface 24, and the like.

The end surface 71 is formed to be able to abut the outer wall surface 916 of the pressure receiving portion 91 at one end of the second punch 70. In the present embodiment, as shown by the two-dot chain line 70 in FIG. 12, when the tip end surface 71 is in contact with the outer wall surface 916, the virtual plane Vp 71 including the tip end surface 71 is the first punch 60. As it approaches, it is formed so that the outer wall surface 916 may be approached. The two-dot chain line 70 indicates the position of the second punch 70 when the distal end surface 71 is in contact with the outer wall surface 916.
The outer sliding surface 23 is formed to approach the central axis C <b> 95 as it approaches the distal end surface 71. The outer sliding surface 23 can slide on the second punch guide 25.

  Next, the movement of the material of the pressure receiving portion 91 when the first punch 60 and the second punch 70 are pressed against the outer wall surface 916 will be described based on FIG. In FIG. 12, the movement of the material of the pressure receiving portion 91 in the vicinity of the first punch 60 where the pressing force F61 in the direction of the imaginary line A61 acts is described, but the second punch 70 where the pressing force F71 in the direction of the imaginary line A71 acts The same is true in the vicinity. In the present embodiment, the virtual line A61 and the virtual line A71 intersect in the pressure receiving portion 91.

  When the first punch 60 is pressed against the outer wall surface 916 by the pressing force F61, the material of the pressure receiving portion 91 moves as indicated by solid arrows F611 and F612. At this time, the pressing force F61 acts to form an obtuse angle of about 170 degrees, for example, on the side of the protrusion forming surface 12 with respect to the tip end surface 61. A portion of the material of the pressure receiving portion 91 moved by the pressing of the first punch 60 moves in the direction approaching the central axis C95 along the protrusion forming surface 12 from the tip end surface 61 (solid arrow F611 in FIG. 12). On the other hand, the remaining material moves away from the central axis C95 along the outer sliding surface 13 from the tip end surface 61 (solid arrow F612 in FIG. 12).

  Here, when the volume of the material of the pressure receiving portion 91 moved by the pressing of the first punch 60 is the same volume as in the first embodiment, that is, the product of the length Rp1, the length Lp1, and the depth Dp1, In the present embodiment, the amount of material moving from the front end surface 61 along the protrusion molding surface 12 in the direction approaching the central axis C95 is smaller than that in the second embodiment. In addition, the amount of material moving from the end face 61 along the outer sliding face 13 in the direction away from the central axis C95 is larger than that in the second embodiment. As a result, the width L953 of the protrusion 95 formed by the protrusion forming device 3 is narrower than the width L952 of the protrusion 95 of the second embodiment.

  In the protrusion forming device 3, when the angle between the direction in which the pressing forces F61 and F71 act and the tip surfaces 61 and 71 make an obtuse angle larger than in the second embodiment, the first punch 60 and the second punch 70 are pressed. The ratio by movement direction of the material of the moving pressure receiving portion 91 is changed as compared with the second embodiment. Thus, in the present embodiment, the amount of the material forming the protrusions 95 is smaller than that in the first embodiment, so the width L 953 of the protrusions 95 is smaller than the width L 951 of the protrusions 95. Therefore, the third embodiment can achieve the same effect as that of the first embodiment, and can make the width of the projection 95 smaller than that of the first embodiment.

Fourth Embodiment
Next, a method of manufacturing a member according to a fourth embodiment of the present invention will be described based on FIGS. The fourth embodiment differs from the first embodiment in the protrusion forming process. In addition, the same code | symbol is attached | subjected to the site | part substantially the same as 1st embodiment, and description is abbreviate | omitted.

  A protrusion forming process as a "manufacturing method of a member" according to the fourth embodiment will be described based on FIGS. FIG. 13 shows a flowchart of the protrusion forming process.

First, in S401, as in S101 of the first embodiment, the pressure receiving portion 91 in which the screw portion 911 and the flange portion 912 are formed is set on the support table.
Next, in S402 as the “contacting step”, the first punch 10 and the second punch 20 are brought into contact with the outer wall surface 916 as in S102 of the first embodiment.
Next, in S403 as the “projection forming step”, the first punch 10 and the second punch 20 are pressed against the outer wall surface 916 as in S103 of the first embodiment. As a result, as shown in FIG. 14A, the grooves 96 and 97 are formed on the outer wall surface 916 of the pressure receiving portion 91, and the projection 95 is formed.
Next, in S404, the first punch 10 and the second punch 20 are separated from the outer wall surface 916 as in S104 of the first embodiment.

Next, in S <b> 405 as the “height adjustment step”, the heights of the outer wall surface and the protrusions are adjusted. In S405, as shown in FIG. 14B, the tip portion 950 of the protrusion 95 formed in S403 is polished together with the outer wall surface 916, and the height of the tip surface 953 of the protrusion 95 and the height of the outer wall surface 917 of the pressure receiving portion 91 Make the same.
Finally, in S406, as in S105 of the first embodiment, the setting of the pressure receiving portion 91 on the support table is released.
In this embodiment, in this way, the projections 95 having the same height as the outer wall surface 917 are formed at predetermined positions of the pressure receiving portion 91.

  In the present embodiment, the outer wall surface 917 of the pressure receiving portion 91 and the tip end surface 953 of the protrusion 95 can have the same height. Thus, in the fourth embodiment, the effects of the first embodiment can be obtained, and the projections 95 can be formed in a shape suitable for projection welding with the ground electrode 924. Therefore, the projections of the pressure receiving portion 91 and the ground electrode 924 Welding can be easily performed.

(Other embodiments)
In the embodiment described above, the protrusion forming device has two punches. There may be three or more punches. It suffices that the pressing forces acting on the respective punches intersect in the pressure receiving portion.

  In the above-described embodiment, the punch guide provided in the protrusion forming device exerts an opposing force on the punch against the reaction force acting on the punch. However, the punch guide may only guide the movement of the punch. Also, the punch guide may not be necessary.

  In the above-described embodiment, the protrusion forming apparatus includes the central punch guide that slides on the sliding surface on the side where the two punches face each other. There may not be a central punch guide.

  In the above-described embodiment, the action force generating portion provided in the protrusion forming device can generate a pressing force for pressing the first punch and the second punch against the pressure receiving portion, the two cam blocks having the cam inclined surface on the ground side. Has a press section. However, the configuration of the action force generation unit is not limited to this. Any configuration may be used as long as the pressing force can be separately applied to the first punch and the second punch.

  In the above-described embodiment, the projection forming apparatus is configured to form a projection used for projection welding. However, the application of the protrusions formed by the protrusion forming apparatus is not limited to this.

  In the above-described embodiment, the protrusion forming device is configured to form the protrusion of the pressure receiving portion of the fuel pressure sensor. However, the member having the protrusions formed by the protrusion forming device is not limited to this. It may be a solid shaped member.

  As described above, the present invention is not limited to such an embodiment, and can be implemented in various forms without departing from the scope of the invention.

1, 2, 3 · · · · · · · Protrusions molding device (manufacturing device for members)
DESCRIPTION OF SYMBOLS 10 ... 1st punch 11 ... Tip surface 20 ... 2nd punch 21 ... Tip surface 35 ... Action force generation part 91 ... Pressure receiving part (member)
916 ··· Outer wall surface 95 · · · · · · · F11 · · · pressing force (first force)
F12 · · · Pressing force (second force)

Claims (15)

A method of manufacturing a member (91) having a projection (95), comprising:
And a contacting step (S102) of bringing the end faces (11, 21) of at least two or more punches (10, 20) at positions separated by a predetermined distance into contact with the outer wall surface (916) of the member ,
A direction in which the first force acts in the member while causing a first force (F11) acting in a direction intersecting the outer wall surface to the first punch (10) of at least two or more of the punches Forming a projection on the outer wall surface by applying a second force (F12) acting in a direction intersecting with the second punch (20) of the at least two or more of the punches;
A method of manufacturing a member including:   In the projection forming step, a resistance (F15, F16) larger than the reaction (F10, F20) acting on the punch from the projection is applied to the punch in the direction opposite to the direction in which the reaction acts. The manufacturing method of the member according to claim 1.   The method according to claim 1 or 2, further comprising a height adjustment step (S405) of adjusting a relationship between the height of the protrusion and the height of the outer wall surface after the protrusion forming step.   The method for manufacturing a member according to any one of claims 1 to 3, wherein the member is formed in a hollow shape.   The said member is a pressure receiving part (91) which the fuel pressure sensor (90) which can detect the pressure of the fuel which a fuel injection valve (8) injects manufacture of the member as described in any one of Claims 1-4 Method. A manufacturing apparatus (1, 2, 3) of a member (91) having a projection (95), wherein
At least two punches (10, 20) provided at positions separated by a predetermined distance and having tip surfaces (11, 21) that can abut the outer wall surface (916) of the member;
A direction in which the first force acts in the member while causing a first force (F11) acting in a direction intersecting the outer wall surface to the first punch (10) of at least two or more of the punches A force generation portion (35) capable of causing a second force (F12) acting in a direction intersecting the second force to act on the second punch (20) of at least two or more of the punches;
The manufacturing apparatus of the member provided with this.   The tip surface is formed so that a virtual plane (Vp11, Vp21, Vp61, Vp71) including the tip surface intersects the outer wall surface when the tip surface is in contact with the outer wall surface. The manufacturing apparatus of the described member.   The tip surface of one punch of at least two or more of the punches has at least two or more virtual planes (Vp11, Vp21) including the tip surface when the tip surface is in contact with the outer wall surface The manufacturing apparatus of a member according to claim 7, wherein the device is formed to be separated from the outer wall surface as it approaches another punch of the punch.   The tip surface of one punch of at least two or more of the punches has at least two or more virtual planes (Vp61, Vp71) including the tip surface when the tip surface is in contact with the outer wall surface 8. The member manufacturing apparatus according to claim 7, wherein the outer wall surface is approached as the other punches of the punch are approached. The manufacturing apparatus of a member according to claim 6 , wherein the tip surface is formed such that a virtual plane (Vp41, Vp51) including the tip surface faces the outer wall surface.
The punch has a punch inclined surface (13, 23) connected to the end surface of the tip opposite to the projection and inclined toward the central axis of the projection as the tip surface is approached.
The manufacturing apparatus of a member according to any one of claims 6 to 10, further comprising a punch guide (15, 25) formed so as to be able to abut on the punch inclined surface and guiding the movement of the punch.   The punch guide is capable of acting on the punch in a direction opposite to the direction in which the reaction force acts, a counter force (F15, F25) that is greater than the reaction force (F10, 20) acting on the punch from the protrusion The manufacturing apparatus of the member according to claim 11. The action force generation unit is
A press portion (38) capable of pressing in a direction along the central axis (C95) of the projection;
It is provided between the press part and the punch, is inclined so as to be away from the central axis of the protrusion as it approaches the protrusion, and can contact an end face (100, 200) opposite to the tip surface of the punch A cam block (36, 37) having a cam inclined surface (361, 371) formed and movable in a direction along the central axis of the projection;
The manufacturing apparatus of the member as described in any one of Claims 6-12.   The manufacturing apparatus of a member according to any one of claims 6 to 13, wherein the projection is used for projection welding.   The said member is a pressure receiving part (91) which the fuel pressure sensor (90) which can detect the pressure of the fuel which a fuel injection valve (8) injects manufacture of the member as described in any one of Claims 6-14. apparatus.

Images