JP2006263755A - Method and apparatus for manufacturing press-formed metallic component - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To eliminate the plating work after a press-forming process by depositing a plated layer on a fractured surface in the press-forming process when a metallic blank plate already treated by the plating process on its surface is punched. <P>SOLUTION: The metallic blank plate 30 plated thereon is cut off by using an upper shearing punch 10 having a shearing edge forming side surface 11 and a shearing edge 12 tilting with respect to the metallic blank plate 30 in the shearing edge forming side surface 11, and a lower shearing punch 20 having a shearing edge forming side surface 21 and a shearing edge 22 tilting with respect to the metallic blank plate 30 in the shearing edge forming side surface 21, and by moving the upper shearing punch 10 relative to the lower shearing punch 20 so as to face to each other in the state that the shearing edge forming side surfaces of the shearing punches 10, 20 are faced and brought into contact or close proximity with each other, and the shearing edges 12, 22 of the shearing punches 10, 20 are tilted in opposite directions. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention is a metal terminal part of a surface-mount type electronic part, etc., in which a fractured surface by press working needs to be covered with a plating for soldering, or broken to solve problems such as corrosion. The present invention relates to a method and an apparatus for manufacturing a press-molded metal part whose cross section needs to be covered with plating.

  As shown in the following Patent Document 1, surface mount electronic components mounted on a conventional printed circuit board make a fillet on the fracture surface of a lead portion (plated metal terminal component), In order to obtain solder joint strength, plating is required on the fracture surface, and there are some which are plated after pressing (so-called post-plating).

In the case of Japanese Patent Laid-Open No. 9-260564, post-plating increases the cost and the defect rate may increase. For example, when using a hoop material that can be continuously fed, it becomes a manufacturing method in which a hoop material without plating is pressed and wound, and then plated and wound in a plating process. Manufacturing costs may increase.

  Further, as in Patent Document 2 below, a method of providing a large clearance between the punch and the die in order to extend the plating on the fracture surface when the lead portion is pressed is also conceivable. That is, in general press working, a clearance of about t × (0.05 to 0.08) is die-cut with respect to the plate thickness t of the metal plate (surface plated) as shown in FIG. However, in Patent Document 2, this clearance is set wider than usual as shown in FIG. 8B so that the plated layer is covered also on the fracture surface. However, in this case, the larger the clearance is, the more burrs are generated. As a result, post-processing (such as deburring) is required.

JP, 7-30043, A In this patent document 2, since burr removal is required, it is disadvantageous also in terms of cost, shape, and accuracy.

  Furthermore, as disclosed in Patent Document 3 below, there is a method of reducing the area of the fractured surface by square punching (pressing) of the lead portion, but a fractured surface portion without plating remains, which is disadvantageous for fillet formation at the time of soldering. It becomes.

Japanese Patent Laid-Open No. 9-232499

  In the present invention, in view of the above points, the fractured surface by press working needs to be covered with plating for solder joining, or the fractured surface is covered with plating in order to solve corrosion and the like. For press-molded metal parts that need to be formed, a plated layer can be formed on the fractured surface within the pressing process when punching a surface-plated metal plate, and plating after the pressing process is not required An object of the present invention is to provide a manufacturing method and apparatus.

  Other objects and novel features of the present invention will be clarified in embodiments described later.

In order to achieve the above object, a method for manufacturing a press-molded metal part according to a first aspect of the present invention includes a workpiece metal plate having a surface plated, a first blade portion forming side surface, and the workpiece A first cutting punch having a cutting blade portion inclined in the blade portion forming side surface with respect to the metal plate; a second cutting portion forming side surface; and the blade portion forming side surface with respect to the metal plate to be processed With a second cutting punch having a cutting blade portion inclined in the inside,
The first and second cutting punches with their blade-forming side surfaces facing each other and brought into contact with or in close proximity to each other, with the cutting blade portions of the first and second cutting punches tilted in the opposite direction. The cutting plate is moved relative to the second cutting punch in the facing direction to cut the metal plate to be processed.

  According to a second aspect of the present invention, there is provided a method for producing a press-molded metal part, wherein one of the first and second cutting punches is fixed to a die on which the metal plate to be processed is placed. It is characterized by being.

According to a third aspect of the present invention, there is provided a press-molded metal part manufacturing method comprising: a mounting surface on which a workpiece metal plate whose surface is plated is mounted; and a blade portion forming inner surface having a predetermined angle with respect to the mounting surface. Using a die having a cutting punch having a blade forming side surface at a predetermined angle with respect to the metal plate to be processed and a cutting blade portion inclined with respect to the metal plate to be processed,
With the die and the cutting portion forming inner surface and the blade forming side surfaces of the cutting punch facing each other and in contact with or in proximity to each other, the die and the cutting punch are moved relative to each other in the opposite direction to thereby change the metal plate to be processed. It is characterized by cutting.

  According to a fourth aspect of the present invention, there is provided a method for producing a press-molded metal part according to the third aspect, wherein the die is fixed to a mounting surface on which the metal plate to be processed is mounted.

  According to a fifth aspect of the present invention, there is provided a method for producing a press-molded metal part according to the first, second, third or fourth invention, wherein the cutting blade portion is rounded or chamfered with a predetermined curvature. It is said.

According to a sixth aspect of the present invention, there is provided a press-molded metal part manufacturing method comprising: a mounting surface on which a workpiece metal plate having a plated surface is mounted; and a blade portion forming inner surface having a predetermined angle with respect to the mounting surface. Using a die having a cutting punch having a blade forming side surface of a predetermined angle with respect to the metal plate to be processed and having a cutting blade portion at a tip edge of the blade forming side surface,
The metal plate to be processed by moving the cutting punch relative to the die in a facing direction in a state where the blade-forming inner surface and the blade-forming side surfaces of the die and the cutting punch face each other and are in contact or close to each other. A method of cutting
The cutting blade is rounded or chamfered with a predetermined curvature.

  According to a seventh aspect of the present invention, there is provided a method for producing a press-molded metal part according to the fifth or sixth aspect, wherein the radius of curvature of the rounding is in the range of 0.005 mm to 0.1 mm.

  According to an eighth aspect of the present invention, in the fifth or sixth aspect of the invention, the chamfer width is in the range of 0.01 mm to 0.1 mm.

  According to a ninth aspect of the present invention, there is provided a method for manufacturing a press-molded metal part according to the first, second, third, fourth, fifth, sixth, seventh or eighth invention, wherein the cutting punch is the workpiece. The relative movement speed of the cutting punch during the cutting operation period in contact with the workpiece metal plate is made smaller than the relative movement speed of the cutting punch when not in contact with the metal plate.

  According to a tenth aspect of the present invention, there is provided a method for producing a press-molded metal part, wherein the first, second, and third portions are subjected to crushing or drawing processing on a portion to be cut of a metal plate to be processed whose surface is plated. The fourth, fifth, sixth, seventh, eighth or ninth inventions are applied.

  According to an eleventh aspect of the present invention, there is provided a method for producing a press-molded metal part, wherein the metal plate to be processed is heated on a heating stage to such an extent that the plating is not fluidized, and then the first, second, third, fourth, fifth, The sixth, seventh, eighth, ninth, or tenth processing is performed.

In the manufacturing method of the press-molded metal part according to the twelfth invention, after heating the metal plate to be processed whose surface is plated to the extent that the plating is not fluidized on the heating stage,
A die having a mounting surface on which the metal plate to be processed is mounted; a blade forming inner surface having a predetermined angle with respect to the mounting surface; and a blade forming side surface having a predetermined angle with respect to the metal plate. And using a cutting punch having a cutting blade portion at the tip edge of the blade portion forming side surface, the die and the shearing surface of the cutting punch face each other and are in contact with or in close proximity to the die. The cutting metal plate is moved relative to each other in the opposing direction to cut the metal plate to be processed.

According to a thirteenth aspect of the present invention, there is provided an apparatus for manufacturing a press-formed metal part having a blade forming side surface at a predetermined angle with respect to a metal plate to be processed whose surface is plated, and with respect to the metal plate to be processed. A first cutting punch having a cutting blade portion inclined in a blade forming side surface; and a blade forming side surface having a predetermined angle with respect to the metal plate to be processed and the blade with respect to the metal plate to be processed A second cutting punch having a cutting blade portion inclined in the part forming side surface,
The first cutting punch has the blade cutting side surfaces facing each other and brought into contact with or close to each other, and the cutting blades of the first and second cutting punches are inclined in the opposite directions, and the second cutting is performed. It is characterized in that it can move relative to the punch in the opposite direction.

  According to a fourteenth aspect of the present invention, there is provided a press-molded metal part manufacturing apparatus according to the thirteenth aspect, further comprising a die on which the metal plate to be processed is placed, wherein the first and second cutting punches are mounted on the die. One of the features is that it is fixed.

According to a fifteenth aspect of the present invention, there is provided a press-molded metal part manufacturing apparatus comprising: a mounting surface on which a workpiece metal plate having a plated surface is placed; and a blade forming inner surface having a predetermined angle with respect to the placement surface. A die having a cutting punch having a blade forming side surface with a predetermined angle with respect to the metal plate to be processed and a cutting blade portion inclined with respect to the metal plate to be processed;
The die and the cutting punch are relatively movable in the opposing direction of the die and the cutting punch in a state in which the blade forming inner surface and the blade forming side surface face each other and are in contact with or close to each other. Yes.

  A press-molded metal part manufacturing apparatus according to a sixteenth aspect of the present invention is characterized in that, in the fifteenth aspect, the die is fixed to a mounting surface on which the metal plate to be processed is mounted.

  According to a seventeenth aspect of the present invention, in the thirteenth, fourteenth, fifteenth, or sixteenth aspect of the invention, the cutting blade portion is formed with rounded or chamfered portions with a predetermined curvature. It is said.

According to an eighteenth aspect of the present invention, there is provided a press-molded metal part manufacturing apparatus comprising: a mounting surface on which a workpiece metal plate having a surface plated is placed; and a blade forming inner surface having a predetermined angle with respect to the placement surface. And a cutting punch having a blade forming side surface at a predetermined angle with respect to the metal plate to be processed and having a cutting blade portion at a tip edge of the blade forming side surface. Rounding or chamfering of curvature is formed,
The die and the cutting punch are relatively movable in the opposing direction of the die and the cutting punch in a state in which the blade forming inner surface and the blade forming side surface face each other and are in contact with or close to each other. Yes.

  According to the method and apparatus for producing a press-molded metal component according to the present invention, a surface mounted on a metal component, for example, a printed circuit board or the like, whose fracture surface by press working needs to be covered with plating for solder joining. A plating layer can be wrapped around the fractured surface of the lead part of the mounted electronic component or the like in the pressing process to form an adhesion. In addition, for press-molded metal parts that require the fracture surface to be covered with plating in order to solve problems such as corrosion, the metal plate that has been surface-plated is punched into the fracture surface within the press process. In this case, a plating layer can be deposited. This eliminates the need for plating after the pressing step and can reduce the cost, and it is possible to eliminate the deformation during the post-plating process and reduce the defect occurrence rate.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, as a best mode for carrying out the present invention, an embodiment of a method and apparatus for producing a press-formed metal part will be described with reference to the drawings.

Embodiment 1
1A, 1B, 1C, and 1D show Embodiment 1 of the present invention. In this figure, the press-molded metal part manufacturing apparatus includes a die (mortar or lower mold) 1, an upper cutting punch 10, a lower cutting punch 20, and a pad 25. The upper surface of the die 1 is a mounting surface 2 on which a metal plate 30 to be processed whose surface is plated is mounted. The metal plate 30 to be processed is a thin metal plate such as copper plated with tin, solder, gold or the like. A space 3 for molding is formed in the die 1 as shown in FIG. 1B, and a lower cutting punch 20 is fixed in the space 3. The inner surface of the space other than the portion where the lower cutting punch is disposed on the die 1 is a blade forming inner surface 4 perpendicular to the mounting surface 2.

  The upper cutting punch 10 has a blade forming side surface 11 having a predetermined angle with respect to the metal plate 30 to be processed, and forms a small angle (preferably 3 ° to 15 °) with respect to the metal plate 30 to be processed. An inclined cutting blade portion (cutting ridge line) 12 is provided in the blade portion forming side surface 11. Similarly, the lower cutting punch 20 has a blade forming side surface 21 having a predetermined angle with respect to the metal plate 30 to be processed, and a small angle (preferably 3 ° to 15 °) with respect to the metal plate 30 to be processed. The cutting blade portion (cutting ridge line) 22 that is inclined and formed in the blade portion forming side surface 21 is provided. However, the direction of inclination of the cutting blade portion 22 is opposite to that of the cutting blade portion 12. That is, if the inclination of the cutting blade 12 is increased to the right, the inclination of the cutting blade 22 is decreased to the right.

  The upper cutting punch 10 can be raised and lowered with its blade portion forming side surface 11 facing the blade portion forming side surface 21 of the lower cutting punch 20 and in a contact state or a very close state. When the metal plate 30 to be processed is completely punched, the blade portion forming side surface 13 which is the remaining three surfaces of the upper cutting punch 10 also faces the blade portion forming inner surface 4 on the die 1 side and is in a contact state or in a very close state. It is designed to go up and down.

  The pad 25 holds the workpiece metal plate 30 on the mounting surface 2 during press working.

  Preferably, in the configuration of the first embodiment, processing for producing a press-molded metal part from the workpiece metal plate 30 is performed according to the following procedure. First, the upper cutting punch 10 is lowered at a normal speed of about 200 spm (stroke per minute) until just before the upper cutting punch 10 contacts the workpiece metal plate 30 placed on the mounting surface 2 of the die 1. Thereafter, the speed of the upper cutting punch 10 is reduced to a low speed of about 30 to 60 spm to perform press processing, that is, fractured surface forming processing, and the metal plate 30 is cut between the cutting blade portion 12 of the upper cutting punch 10 and the lower cutting punch 20. Clamp it with the cutting blade 22. When the workpiece metal plate 30 is completely punched, the cutting blade portion 14 on the blade portion forming side surface 13 which is the remaining three surfaces of the upper cutting punch 10 and the blade portion forming inner surface 4 which is the remaining three surfaces on the die 1 side are further provided. The remaining contour of the press-molded metal part is punched with the cutting blade 15.

  In addition, the cutting operation period (fracture surface) which is contacting the to-be-processed metal plate 30 rather than the relative moving speed of the up-and-down cutting punches 10 and 20 when the up-and-down cutting punches 10 and 20 are not in contact with the to-be-processed metal plate 30. The operation of extremely slowing the relative movement speed of the upper and lower cutting punches 10 and 20 during the formation period) can be realized by using a variable speed press.

  By this pressing operation, as shown in FIG. 1C, the fracture surface 31 of the metal plate 30 to be processed sandwiched between the upper cutting punch 10 and the lower cutting punch 20 is covered with the plating layer 32 (plating). Thus, a press-molded metal part in which the required fracture surface is covered with plating can be produced. Since the fracture surface of the metal plate portion remaining on the die side is covered with the plating layer in the same manner as the fracture surface of the punched metal plate portion, it is possible to use the one remaining on the die side. As the metal plate 30 to be processed, either a plated hoop material or a plated cut material can be used.

  If the press-molded metal component is, for example, a metal terminal component (lead) of a surface mount electronic component, it is covered with a plating layer 32 as shown in FIG. A solder fillet can be formed also on the broken fracture surface 31, and the reliability of soldering of the surface mount electronic component can be improved.

  In the press-molded metal part obtained in FIG. 1, a normal press is performed except for a portion where the workpiece metal plate 30 is sandwiched between the cutting blade portion 12 of the upper cutting punch 10 and the cutting blade portion 22 of the lower cutting punch 20. Die and upper and lower cuts so that the entire cross-section of the press-molded metal part is cut between the cutting blade part of the upper cutting punch and the cutting blade part of the lower cutting punch. By forming a punch, it is possible to produce a press-molded metal part in which all fractured surfaces are covered with a plating layer. Alternatively, it is possible to carry out the press work separately several times so that the entire contour of the press-molded metal part is cut between the cutting blade part of the upper cutting punch and the cutting blade part of the lower cutting punch. is there. Thus, if all the fracture surfaces of a press-molded metal part are made into the structure covered with the plating layer, problems, such as corrosion resulting from a fracture surface being exposed, can be eliminated.

Embodiment 2
2A and 2B show Embodiment 2 of the present invention. In this figure, the press-molded metal part manufacturing apparatus includes a die (mortar mold or lower mold) 41 and an upper cutting punch 50. The upper surface of the die 41 is a mounting surface 42 on which the metal plate 30 to be processed whose surface is plated is mounted. A space 43 for molding is formed in the die 41, and the inner surface of the space 43 is a blade portion forming inner surface 44 having a predetermined angle with respect to the mounting surface 42. A corner of the mounting surface 42 and the blade portion forming inner surface 44 becomes the cutting blade portion 45.

  The upper cutting punch 50 that can be fitted into the space 43 has a blade forming side surface 51 having a predetermined angle with respect to the metal plate 30 to be processed, and a small angle (preferably 3 ° to 15 °) with respect to the metal plate 30 to be processed. And the cutting blade portion 52 is inclined (the cutting blade portion 52 is inclined in the blade portion forming side surface 51 and is formed on the front surface and the rear surface in FIG. 2). The upper cutting punch 50 can be moved up and down with its blade portion forming side surface 51 facing the blade portion forming inner surface 44 on the die 41 side and in a contact state or very close proximity.

  Preferably, in the configuration of the second embodiment, the processing for producing the press-molded metal part from the metal plate 30 is performed according to the following procedure. First, the upper cutting punch 50 is lowered at a normal speed of about 200 spm until the upper cutting punch 50 comes into contact with the workpiece metal plate 30 placed on the mounting surface 42 of the die 41. Thereafter, the upper cutting punch 50 is lowered. The speed of 50 is reduced to 30 to 60 spm to perform press processing, that is, fracture surface forming processing, and the metal plate 30 to be processed is sandwiched between the cutting blade portion 52 of the upper cutting punch 50 and the cutting blade 45 on the die 41 side. When the workpiece metal plate 30 is completely punched, the cutting blade portion 54 on the blade portion forming side surface 53 which is the remaining two surfaces of the upper cutting punch 50 and the blade portion forming inner surface which is the remaining two surfaces on the die 41 side. The remaining contour of the press-molded metal part is punched out with the cutting blade portion 46 of 44.

  By this press working operation, as in the case shown in FIG. 1C, the upper cutting punch 50 is sandwiched between the inclined cutting blade portion 52 (front and back) and the cutting blade portion 45 on the die 41 side. The fracture surface 31 of the workpiece metal plate 30 is covered with the plating layer 32 (a state where the plating layer wraps around and adheres), and a press-molded metal part with a required fracture surface covered with plating can be produced. Since the fracture surface of the metal plate portion remaining on the die side is covered with the plating layer in the same manner as the fracture surface of the punched metal plate portion, it is possible to use the one remaining on the die side.

  If the press-molded metal part is, for example, a metal terminal part (lead) of a surface mount electronic part, it is covered with a plating layer 32 in the same manner as shown in FIG. A solder fillet can be formed on the broken fracture surface 31 and the reliability of soldering of the surface mount electronic component can be improved.

  In the press-molded metal part obtained in FIG. 2, a portion (front side and back side) where the workpiece metal plate 30 is sandwiched between the inclined cutting blade portion 52 of the upper cutting punch 50 and the cutting blade portion 45 of the die 41. Except for the two sides), the fracture surface is exposed in the same way as punching with a normal press, but the entire contour of the press-molded metal part is sandwiched between the inclined cutting blade part of the upper cutting punch and the cutting blade part on the die side. By forming the die and the upper cutting punch so as to be cut, it is possible to produce a press-molded metal part in which all broken surfaces are covered with a plating layer. Alternatively, it is possible to carry out the press work separately several times so that the entire contour of the press-molded metal part is cut between the inclined cutting blade part of the upper cutting punch and the cutting blade part on the die side. It is. Thus, if all the fracture surfaces of a press-molded metal part are made into the structure covered with the plating layer, problems, such as corrosion resulting from a fracture surface being exposed, can be eliminated.

  For example, in FIGS. 3A and 3B, the upper cutting punch 150 forms a cutting blade portion 152 that is inclined at a small angle on the workpiece metal plate 130, and this small angle is formed on the lower surface of the upper cutting punch 150. (Indicated by an angle θ in the figure). When the cross-sectional shape of the upper cutting punch 150 is complicated, it may be a substantially diagonal direction of a rectangle surrounding the shape. If the cutting blade portion 152 is formed by such a method, all the cutting blade portions 152 of the four blade portion forming side surfaces 151 of the upper cutting punch form a small angle with respect to the workpiece metal plate 130, and the four surfaces on the die 141 side are formed. With the cutting blade portion 145 of the blade portion forming inner surface 143, the metal plate to be processed can be completely punched, and all the fracture surfaces are not exposed.

Embodiment 3
4A and 4B show Embodiment 3 of the present invention. In this figure, the press-molded metal part manufacturing apparatus includes a die (mortar die or lower die) 41 and an upper cutting punch 60. The upper surface of the die 41 is a mounting surface 42 on which the metal plate 30 to be processed whose surface is plated is mounted. A space 43 for molding is formed in the die 41, and the inner surface of the space 43 is a blade portion forming inner surface 44 having a predetermined angle with respect to the mounting surface 42. A corner of the mounting surface 42 and the blade portion forming inner surface 44 becomes the cutting blade portion 45.

The upper cutting punch 60 has a blade portion forming side surface 61 having a predetermined angle with respect to the workpiece metal plate 30, and the leading edge of the blade portion forming side surface 61 is a cutting blade portion 62. The cutting blade 62 is rounded with a predetermined curvature radius R. The radius of curvature R is t when the thickness of the workpiece metal plate 30 is t.
0.005mm ≦ R ≦ 0.1mm
It is preferable to set to.

  The upper cutting punch 60 can be moved up and down with its blade portion forming side surface 61 facing the blade portion forming inner surface 44 on the die 41 side and in a contact state or very close proximity.

  Preferably, in the configuration of the third embodiment, the processing for producing the press-molded metal part from the metal plate 30 is performed according to the following procedure. First, until the upper cutting punch 60 comes into contact with the workpiece metal plate 30 placed on the mounting surface 42 of the die 41, the upper cutting punch 60 is lowered at a normal speed of about 200 spm. The speed of 60 is reduced to 30 to 60 spm, press working, that is, fractured surface forming processing is performed, and the workpiece metal plate 30 is cut by the cutting blade portion 62 having the rounding of the upper cutting punch 60 and the cutting blade 45 on the die 41 side. To do.

  By this press working operation, as shown in FIG. 4 (B), the fracture surface of the workpiece metal plate 30 cut by the cutting blade portion 62 having the rounded upper cutting punch 60 and the cutting blade portion 45 on the die 41 side. 31 (the metal plate portion remaining on the die side) is covered with the plating layer 32 (a state in which the plating layer wraps around and adheres), and the required fracture surface is obtained without increasing the clearance between the die 41 and the upper cutting punch 60. A press-molded metal part in which the fracture surface is covered with plating can be produced by wrapping the plate with the plating.

  If the press-molded metal part is, for example, a metal terminal part (lead) of a surface-mount type electronic part, the solder fillet is also applied to the fractured surface 31 covered with the plating layer 32 during soldering mounting on a printed circuit board or the like. And the reliability of soldering of the surface mount type electronic component can be improved.

  By configuring the die and the upper cutting punch so that the entire contour of the press-molded metal part is cut by the cutting blade part having the rounding of the upper cutting punch and the cutting blade part on the die side, It is also possible to produce a press-molded metal part in which the fracture surface is covered with a plating layer. Alternatively, it is also possible to carry out the press work separately several times so that the entire contour of the press-molded metal part is cut by the cutting blade part having the rounding of the upper cutting punch and the cutting blade part on the die side. Is possible. Thus, if all the fracture surfaces of a press-molded metal part are made into the structure covered with the plating layer, problems, such as corrosion resulting from a fracture surface being exposed, can be eliminated.

  The configuration in which the rounding of the predetermined curvature radius R is formed in the cutting blade portion of the upper cutting punch of the third embodiment is the cutting blade portions 12 and 22 of the upper and lower cutting punches 10 and 20 in the first embodiment and the second embodiment. It is applicable also to the cutting blade part 52 of the upper cutting punch 50 in FIG.

Embodiment 4
FIG. 5 shows a fourth embodiment of the present invention. In the fourth embodiment, chamfering is formed instead of rounding of the radius of curvature R in the upper cutting punch 60 of the third embodiment. That is, in FIG. 5, the upper cutting punch 70 has a blade portion forming side surface 71 having a predetermined angle with respect to the workpiece metal plate 30, and the leading edge of the blade portion forming side surface 71 is the cutting blade portion 72. . The cutting blade 72 is formed with a chamfer having a chamfer width W as viewed from the bottom surface side (the metal plate 30 side to be processed). The chamfering width W is t when the thickness of the workpiece metal plate 30 is t.
0.01mm ≦ W ≦ 0.1mm
It is preferable to set to.

  Other configurations are the same as those in the third embodiment, and in this case as well as shown in FIG. 4B, the cutting blade portion 72 having the chamfer of the upper cutting punch 70 and the die 41 side are provided. The fracture surface 31 (the metal plate portion remaining on the die side) of the metal plate 30 cut by the cutting blade portion 45 is covered with the plating layer 32, and the required fracture surface is covered with plating. Metal parts can be produced.

  The configuration for forming a chamfer with a predetermined chamfering width W on the cutting blade portion of the upper cutting punch of the fourth embodiment is the same as that of the cutting blade portions 12 and 22 of the upper and lower cutting punches 10 and 20 in the first embodiment, and the second embodiment. It is applicable also to the cutting blade part 52 of the upper cutting punch 50 in FIG.

Embodiment 5
6A, 6B, and 6C show Embodiment 5 of the present invention. In this case, a lower die 80 having a mounting surface (upper surface) 81 on which the metal plate 30 to be processed plated on the surface shown in FIG. 6 (A) and a punch 85 for crushing or drawing are used, By lowering the punch 85 as shown in FIG. 6B, the portion to be cut of the metal plate 30 to be cut is crushed or drawn. That is, the thickness of the part to be cut is reduced.

  Thereafter, the press working (for example, cutting using a die and a punch in FIG. 6C) shown in the first, second, third, or fourth embodiment is performed on the planned cutting portion of the metal plate 30 to be processed.

  According to the fifth embodiment, the thickness direction of the fracture surface of the press-molded metal part is reduced by reducing the thickness of the part to be cut of the metal plate 30 to be cut in advance by crushing or drawing shown in FIG. The dimensions can be reduced, and it can be further ensured that the fracture surface is covered with the plating layer in the pressing process.

  In addition, it is preferable that the metal plate 30 to be processed is cut in the first to fourth embodiments.

Embodiment 6
FIG. 7 shows a sixth embodiment of the present invention. In this case, a heating stage (heater stage) 95 is provided in front of a press molding apparatus 90 (a configuration having a die and a cutting punch) for press-molded metal parts. Then, the metal plate 30 to be processed (for example, a hoop material that can be continuously fed) subjected to plating immediately before being subjected to press processing by the press molding apparatus 90 is heated by the heating stage 95 to such an extent that the plating is not fluidized. The tin plating is preferably heated to 200 ° C to 230 ° C, and in the case of solder plating, it is preferably heated to about 150 ° C to 180 ° C. The workpiece metal plate 30 heated by the heating stage 95 is sequentially supplied to the press molding apparatus 90, and, for example, a press-molded metal part is manufactured by the processing shown in the first, second, third, fourth, or fifth embodiment. .

  In addition, although the said example described the case where the heating stage 95 was provided in the front | former stage of the apparatus 90 for press molding of a press-molded metal component, you may heat in the apparatus 90 for press molding, or you may carry out by both.

  According to the sixth embodiment, the metal plate 30 to be processed is heated to an appropriate temperature by the heating stage 95, thereby activating the plating to make it easy to extend (improving the spreadability). It can be further ensured that it is covered with a plating layer.

  In addition, about these Embodiments 1-6, in a desired press-molded metal part, you may implement about the outer periphery of the outer shape, or may implement only in a required location.

  Although the embodiments of the present invention have been described above, it will be obvious to those skilled in the art that the present invention is not limited to these embodiments, and various modifications and changes can be made within the scope of the claims.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a first embodiment of a method and apparatus for producing a press-molded metal part according to the present invention, in which (A) is a front sectional view showing a schematic configuration of the apparatus, (B) is a perspective view, and (C) is obtained. Sectional drawing of the principal part of a press-molded metal part, (D) is principal part sectional drawing of the soldering mounting state to a printed circuit board etc. It is Embodiment 2 of this invention, Comprising: (A) is a front sectional view which shows apparatus schematic structure, (B) is a perspective view similarly. In the second embodiment, all fractured surfaces are covered with a plating layer, (A) is a sectional view showing a schematic configuration of the apparatus, and (B) is a perspective view. It is Embodiment 3 of this invention, Comprising: (A) is a front sectional view which shows an apparatus schematic structure, (B) is a front sectional view after press work. It is a front sectional view showing a schematic apparatus configuration of a fourth embodiment of the present invention. 5A is a front view showing a schematic configuration of the apparatus, FIG. 5B is a front sectional view after crushing or drawing, and FIG. 5C is a front sectional view at the time of cutting. . It is an apparatus schematic block diagram of Embodiment 6 of this invention. Regarding the clearance between the die and the punch, (A) is an explanatory view when the clearance is normal, and (B) is an explanatory view showing that burrs are generated when the clearance is set large.

Explanation of symbols

1, 41 Die 2, 42 Placement surface 3, 43 Space 4, 44, 143 Blade forming inner surface 10, 50, 60, 70 Upper cutting punch 11, 13, 21, 51, 61, 71 Blade forming side 12, 22, 45, 52, 62, 72 Cutting blade portion 20 Lower cutting punch 30 Metal plate to be processed 31 Fracture surface 32 Plating layer 80 Lower mold 85 Punch 90 Press molding device 95 Heating stage

Claims (18)

A first cutting having a metal plate to be processed plated on the surface and a cutting blade portion having a first blade portion forming side surface and inclined in the blade portion forming side surface with respect to the metal plate to be processed. Using a punch and a second cutting punch having a second blade portion forming side surface and having a cutting blade portion inclined in the blade portion forming side surface with respect to the metal plate to be processed,
The first and second cutting punches with their blade-forming side surfaces facing each other and brought into contact with or in close proximity to each other, with the cutting blade portions of the first and second cutting punches tilted in the opposite direction. A method of manufacturing a press-formed metal part, wherein the metal plate is cut by moving the cutting punch relative to the second cutting punch in a facing direction.   The method for manufacturing a press-formed metal part according to claim 1, wherein one of the first and second cutting punches is fixed to a die on which the metal plate to be processed is placed. A die having a mounting surface on which a metal plate to be processed plated and a blade forming inner surface having a predetermined angle with respect to the mounting surface, and a predetermined angle with respect to the metal plate A cutting punch having a cutting blade portion that has a blade forming side surface and an inclined cutting blade portion with respect to the metal plate to be processed,
With the die and the cutting portion forming inner surface and the blade forming side surfaces of the cutting punch facing each other and in contact with or in proximity to each other, the die and the cutting punch are moved relative to each other in the opposite direction to thereby change the metal plate to be processed. A method for producing a press-molded metal part, characterized by cutting.   The manufacturing method of the press-molded metal component of Claim 3 with which the said die | dye is being fixed with respect to the mounting surface which mounts the said to-be-processed metal plate.   The method of manufacturing a press-formed metal part according to claim 1, 2, 3, or 4, wherein the cutting blade portion is rounded or chamfered with a predetermined curvature. A die having a mounting surface on which a metal plate to be processed plated and a blade forming inner surface having a predetermined angle with respect to the mounting surface, and a predetermined angle with respect to the metal plate And a cutting punch having a cutting blade portion at the leading edge of the blade portion forming side surface,
The metal plate to be processed by moving the cutting punch relative to the die in a facing direction in a state where the blade-forming inner surface and the blade-forming side surfaces of the die and the cutting punch face each other and are in contact or close to each other. A method of manufacturing a press-molded metal part for cutting
A method of manufacturing a press-molded metal part, wherein the cutting blade is rounded or chamfered with a predetermined curvature.   The method of manufacturing a press-formed metal part according to claim 5 or 6, wherein the radius of curvature of the rounding is in a range of 0.005 mm to 0.1 mm.   The method for producing a press-molded mold part according to claim 5 or 6, wherein the chamfering width is within a range of 0.01 mm or more and 0.1 mm or less.   The relative movement speed of the cutting punch during the cutting operation period in which the cutting punch is in contact with the workpiece metal plate is smaller than the relative movement speed of the cutting punch when the cutting punch is not in contact with the workpiece metal plate. A method for producing a press-formed metal part according to claim 1, 2, 3, 4, 5, 6, 7 or 8.   Applying the processing according to claim 1, 2, 3, 4, 5, 6, 7, 8 or 9 after crushing or drawing the portion to be cut of the metal plate to be processed whose surface is plated A method of manufacturing a press-molded metal part characterized by the above.   After the metal plate to be processed is heated by a heating stage to such an extent that the plating does not flow, the processing according to claim 1, 2, 3, 4, 5, 6, 7, 8, 9 or 10 is performed. Manufacturing method of press-molded metal parts. After heating the metal plate with plating on the surface to such an extent that the plating does not flow on the heating stage,
A die having a mounting surface on which the metal plate to be processed is mounted; a blade forming inner surface having a predetermined angle with respect to the mounting surface; and a blade forming side surface having a predetermined angle with respect to the metal plate. And using a cutting punch having a cutting blade portion at the tip edge of the blade portion forming side surface, the die and the shearing surface of the cutting punch face each other and are in contact with or in close proximity to the die. A method of manufacturing a press-molded metal part, wherein the metal plate is cut by relatively moving the cutting punch in a facing direction. A first blade having a blade-forming side surface at a predetermined angle with respect to the metal plate to be processed whose surface is plated, and a cutting blade portion inclined in the blade-forming side surface with respect to the metal plate to be processed. And a cutting blade portion having a blade portion forming side surface at a predetermined angle with respect to the metal plate to be processed, and a cutting blade portion inclined in the blade portion forming side surface with respect to the metal plate to be processed. With a cutting punch,
The first cutting punch has the blade cutting side surfaces facing each other and brought into contact with or close to each other, and the cutting blades of the first and second cutting punches are inclined in the opposite directions, and the second cutting is performed. An apparatus for manufacturing a press-molded metal part, which is relatively movable in a direction opposite to a punch.   The press-molded metal part manufacturing apparatus according to claim 13, further comprising a die on which the metal plate to be processed is placed, wherein one of the first and second cutting punches is fixed to the die. A die having a mounting surface on which a metal plate to be processed plated and a blade forming inner surface having a predetermined angle with respect to the mounting surface, and a predetermined angle with respect to the metal plate A cutting punch having a cutting blade portion that has a blade forming side surface and an inclined cutting blade portion with respect to the metal plate to be processed,
The die and the cutting punch are movable relative to each other in a facing direction of the die and the cutting punch in a state in which the blade forming inner surface and the blade forming side face face each other and are in contact with or close to each other. Manufacturing equipment for press-molded metal parts.   The press-molded metal part manufacturing apparatus according to claim 15, wherein the die is fixed to a mounting surface on which the metal plate to be processed is mounted.   17. The press-molded metal part manufacturing apparatus according to claim 13, 14, 15 or 16, wherein the cutting blade portion is rounded or chamfered with a predetermined curvature. A die having a mounting surface on which a metal plate to be processed plated and a blade forming inner surface having a predetermined angle with respect to the mounting surface, and a predetermined angle with respect to the metal plate And a cutting punch having a cutting blade portion at the tip edge of the blade portion forming side surface, a rounding or chamfering of a predetermined curvature is formed on the cutting blade portion,
The die and the cutting punch are movable relative to each other in a facing direction of the die and the cutting punch in a state in which the blade forming inner surface and the blade forming side face face each other and are in contact with or close to each other. Manufacturing equipment for press-molded metal parts.

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