JP4938715B2 - Manufacturing method for thickened press products - Google Patents

Description

  The present invention relates to a method for manufacturing a thickened press product, in which a rising portion rising from an outer peripheral edge of a plate-shaped main body is thickened by a press to manufacture a thickened press product.

  2. Description of the Related Art Conventionally, for example, in a pulley piston in a continuously variable transmission of an automobile, there has been a molding method in which a rising portion such as a boss portion on an inner peripheral side or a seal groove portion on an outer peripheral side is thickened (for example, see Non-Patent Document 1). . As shown in FIG. 9, this molding method is to increase the thickness of the rising portion 32 rising from the main body portion 31 by pressing, and the mold includes a die 33, a punch 34, and a main body portion. 31 and a plate presser 36 that presses the main body 31 and the rising part 32. Here, (a) in FIG. 9 shows a state before the thickening process, (b) shows a state during the thickening process, and (c) shows a state of completion of the thickening process. As can be seen from this figure, in the process of increasing the thickness, the punch 34 that presses the rising portion 32 and the die 33 are lowered together. And the space | interval of the die | dye 33 which pinches | interposes the standup | rising part 32, and the board presser 36 spreads by this fall, and the standup | rising part 32 is thickened by this.

“Automotive Technology”, Japan Society for Automotive Technology, 1996, Vol. 50, no. 12, p. 31-37

  However, in the conventional molding method, the punch 34 and the die 33 are integrally lowered in the process of increasing the thickness, so that the lowering length of the punch 34 and the die 33 and the plate holder 36 are sandwiched. There was a certain relationship with the volume of the space. That is, the volume of the space is uniquely determined with respect to the descending length of the punch 34. On the other hand, the amount by which the rising portion 32 is crushed by the punch 34 is increased by the increase in the thickness of the rising portion 32, and therefore, the volume of the space that is uniquely determined with respect to the descending length of the punch 34. In relation, the shape of the rising portion 32 to be thickened is limited to a narrow range.

  The present invention has been made to solve the above-described conventional drawbacks, and its object is to produce a thickened press product that can increase the degree of freedom of the shape of the rising portion to be thickened. It is to provide a method.

In order to achieve the above object, a method for manufacturing a thickened press product according to the present invention has the following configuration. That is,
The manufacturing method of the thickened press product according to the invention of claim 1 is a plate-like main body, and from the outer peripheral edge of the main body to one side in the axial direction facing the front and back of the main body. This is a manufacturing method for manufacturing a thickened press product by increasing the thickness of the rising portion with a press with respect to an object to be processed, which has a rising portion that rises obliquely outward. This manufacturing method includes a knockout for receiving the main body on the other side opposite to the one side, and a plate presser for pressing the main body and the main body to the midway position of the rising portion on the one side. And a thickening punch that is disposed on the outer peripheral side of the plate presser and presses the tip of the rising portion in a pressing direction that is a direction from one side of the axial direction toward the other side, and A die that is disposed on the outer peripheral side of the knockout and that is movable in the axial direction relative to the knockout and the punch for increasing thickness, and that receives the other side of the rising portion, Use a mold. And this manufacturing method uses the mold to push the tip of the rising portion in the pressing direction with the thickening punch, and in the process of crushing the rising portion, The tip portion enters between the outer peripheral surface of the plate presser and the inner peripheral surface of the die, and the die is pushed by the rising portion that is being thickened without being pushed by the thickening punch. By moving in the pressing direction relative to the knockout, the space between the plate presser and the die sandwiching the rising portion is widened, and the rising portion is thickened.

  According to this method of manufacturing a thickened press product, the thickening punch and the die can move relative to each other in the axial direction of the main body, and the thickening punch presses the tip of the rising portion. In the process, the die is pushed against the rising portion that is being thickened without being pushed by the thickening punch, and moves relative to the knockout. That is, there is no direct relationship between the moving length of the thickening punch and the moving length of the die, and the die and the plate presser are moved for the first time when the die is moved relative to the rising portion being thickened. The volume of the space between the two is determined. For this reason, compared with the case where the thickening punch and the die move together, the shape of the rising portion to be thickened is less limited, and the degree of freedom of the shape can be increased.

  A method for manufacturing a thickened press product according to a second aspect of the present invention is the method for manufacturing a thickened press product according to the first aspect, wherein the workpiece has a proximal end at the leading end of the rising portion. It is bent and formed so as to stand up from the side. Thereby, the thickening punch can be accurately applied to the tip of the rising portion, or the thickening punch can be caused to enter deeply between the outer peripheral surface of the plate presser and the inner peripheral surface of the die.

  A method for manufacturing a thickened press product according to the invention described in claim 3 is the method for manufacturing a thickened press product according to claim 1, wherein the die is positioned parallel to the rising portion of the workpiece. And a second receiving surface that extends from the first receiving surface and is bent so as to stand up from the first receiving surface and receives a tip portion of the rising portion. . Therefore, prior to the increase in the thickness of the rising portion, the plate presser becomes a bending punch and moves in the pressing direction relative to the die so that the rising portion and the bending punch are It presses with the said 2nd receiving surface of die | dye, and bend | folds so that the front-end | tip part of the said rising part may stand up from the base end side. In this way, by using the plate presser as a bending punch, bending of the leading end portion of the rising portion and thickening of the rising portion can be performed with a single mold. And by bending the leading end of the rising part, when increasing the thickness of the rising part, the thickening punch is accurately applied to the leading end of the rising part, or the thickening punch is used as a bending punch (plate presser) It can be made to penetrate deeply between the outer peripheral surface of the die and the inner peripheral surface of the die.

  A method for manufacturing a thickened press product according to the invention described in claim 4 is a semi-finished product of the thickened press product manufactured by the manufacturing method according to any one of claims 1 to 3. Drawing is applied so that the thickened rising portion that becomes the thickened rising portion of the product rises straight in the axial direction.

  A method for manufacturing a thickened press product according to a fifth aspect of the present invention is the method for manufacturing a thickened press product according to the fourth aspect, wherein the second mold for performing the drawing process includes the body part A second knock-out received on the other side; a second die disposed on the outer peripheral side of the second knock-out and movable in the axial direction relative to the second knock-out; and the main body A drawing punch that presses the portion on the one side, and an upsetting punch that is disposed on the outer peripheral side of the drawing punch and is movable in the axial direction relative to the drawing punch. With. Therefore, the squeezing punch moves in the pressing direction relative to the second die so as to push the semi-finished product into the second die, and the increased thickness rising portion is moved to the axial center. Squeeze to stand upright in the direction. Subsequently, the upsetting punch moves in the pressing direction relative to the second knockout so as to press the tip of the thickening rising portion, and the thickening rising portion is moved to the first thickening rising portion. Two knockouts, the second die, and the punch for squeezing are installed, and the leading end of the increased thickness rising portion and the rear end opposite to the leading end are formed on a required surface.

  According to the manufacturing method of the thickened press product according to the present invention, there is no direct relationship between the moving length of the thickening punch and the moving length of the die, and the die is pushed by the rising portion that is being thickened. Since the volume of the space sandwiched between the die and the plate presser is determined for the first time by relatively moving, compared to the case where the punch for thickening and the die move together, the rising portion where the thickness is increased There are few restrictions of a shape, and the freedom degree of the shape can be raised.

  Hereinafter, the best mode for carrying out the method for manufacturing a thickened press product according to the present invention will be described with reference to the drawings.

  1 to 3 show a first embodiment of the present invention. Reference numeral 1 in the figure is a workpiece. 2 is a thickening press product obtained by processing this workpiece 1, and this thickening press product 2 is, for example, in a clutch such as a wet multi-plate clutch attached to an automatic transmission or a torque converter, Used as a clutch piston material. 3 is a mold for producing the thickened press product 2.

  Here, as shown in FIG. 1, the workpiece 1 has one of a plate-shaped main body 1 a and one axial center 1 b direction from the outer peripheral edge of the main body 1 a toward the front and back of the main body 1 a. The side 101 includes a rising portion 1c that rises obliquely outward. Therefore, the manufacturing method of the thickened press product 2 is to increase the thickness of the rising portion 1c by pressing the workpiece 1.

  A mold 3 used for manufacturing the thickening press product 2 includes a knockout 4, a plate presser 5, a thickening punch 6, and a die 7. Here, the knockout 4 receives the main body portion 1 a of the workpiece 1 on the other side 102 opposite to the one side 101. The plate presser 5 is for pressing the main body portion 1a and the main body 1a portion to the middle position of the rising portion 1c on the one side 101. The thickening punch 6 is arranged on the outer peripheral side of the plate presser 5 and the pressing direction P in which the tip of the rising portion 1c is directed from one side 101 in the direction of the axis 1b toward the other side 102. To press. The die 7 is arranged on the outer peripheral side of the knockout 4 and is movable relative to the knockout 4 and the thickening punch 6 in the direction of the axis 1b, and the other side of the rising portion 1c. 102.

  Therefore, the method for manufacturing the thickened press product 2 uses this die 3 to press the tip of the rising portion 1c in the pressing direction P by the thickening punch 6 to crush the rising portion 1c. In the process, the leading end portion 6 a of the thickening punch 6 enters between the outer peripheral surface 5 a of the plate retainer 5 and the inner peripheral surface 7 a of the die 7, and the die 7 is not pushed by the thickening punch 6. By being pushed by the rising portion 1c being thickened and moving in the pressing direction P relative to the knockout 4, the space between the plate presser 5 and the die 7 sandwiching the rising portion 1c is widened, and the rising portion 1c is increased in thickness (see FIGS. 2 and 3).

  Specifically, the die 7 extends from the first receiving surface 7b and stands up from the first receiving surface 7b, and the first receiving surface 7b that faces the rising portion 1c of the workpiece 1 in parallel. And a second receiving surface 7c for receiving the tip portion 1d of the rising portion 1c. Therefore, prior to increasing the thickness of the rising portion 1c, the plate retainer 5 becomes a bending punch 501 and moves in the pressing direction P relative to the die 7 so that the rising portion 1c is bent. It presses with 501 and the 2nd receiving surface 7c of the dice | dies 7, and it bend | folds so that the front-end | tip part 1d of the standing part 1c may stand up from the base end side (refer FIG. 1, FIG. 2). In this way, the workpiece 1 is formed to be bent so that the tip portion 1d of the rising portion 1c rises from the base end side, and the tip portion 1d of the rising portion 1c is bent to the workpiece 1 formed. Thus, the rising portion 1c is increased in thickness by the method described above.

  Specifically, the workpiece 1 is made of a metal such as steel (steel plate), and the main body 1a is formed in a disc shape, and a circular shaft hole 1e is opened in the center. The rising portion 1c rises obliquely outward from one end 101 (upper side) in the axial center 1b direction (vertical direction in the illustrated embodiment) from the entire outer periphery of the main body 1a. . Thus, the workpiece 1 has a rotating body shape with the axis 1b as an axis. And the thickening press product 2 obtained by processing this processing target object 1 rises from the entire circumference of the main body portion 1a and the outer peripheral edge of the main body portion 1a, and the rising portion 1c is thickened. It consists of a rising part 2a and has a rotating body shape with the axis 1b as an axis.

  The die 3 used in the manufacturing method of the increased thickness press product 2 has a lower die 3 a attached to the die base 8, the knockout 4, the die 7, the guide 9, and the knockout 4 attached to the die base 8. It consists of a product guide 10. Here, the knockout 4 is attached to the die base 8 via the first cushion 11. A stepped portion 4b is formed on the outer peripheral surface 4a of the knockout 4 so as to face upward (that is, in a direction opposite to the pressing direction P). The die 7 is disposed on the outer peripheral side of the knockout 4 and is attached to the die base 8 via the second cushion 12. And the said 1st receiving surface 7b and the 2nd receiving surface 7c are formed in the inner peripheral surface 7a upper part of the die | dye 7, and it faces down on the inner peripheral surface 7a lower part of the die | dye 7 (that is, it faces the press direction P). ) The inner step 7d is formed to face the step 4b of the knockout 4. Further, an outer stepped portion 7f facing upward (that is, facing the direction opposite to the pressing direction P) is formed on the outer peripheral surface 7e of the die 7. The guide 9 is disposed on the outer peripheral side of the die 7 and is directly attached to the die base 8. A step 9 b facing downward (that is, facing the pressing direction P) is formed on the inner peripheral surface 9 a of the guide 9 so as to face the outer step 7 f of the die 7. With the structure of the knockout 4, the die 7 and the guide 9, the outer peripheral surface 4a of the knockout 4 is guided to the lower part of the inner peripheral surface 7a of the die 7, and can move in the direction of the axis 1b. 7, the outer peripheral surface 7e is guided by the inner peripheral surface 9a of the guide 9, and can move in the direction of the axis 1b. The product guide 10 is provided at the center of the upper surface of the knockout 4, and the shaft hole 1 e provided at the center of the main body 1 a of the workpiece 1 is fitted into the product guide 10.

  The mold 3 includes an upper mold 3b including the punch plate 13 and the bending punch 501 (plate presser 5) and the thickening punch 6 attached to the punch plate 13. Here, the bending punch 501 is attached to the punch plate 13 via the third cushion 14. Then, the lower part of the outer peripheral surface 5a of the bending punch 501 is inclined to form a rising portion pressing surface 5b that presses up to the middle position of the rising portion 1c of the workpiece 1, and the lower portion of the outer periphery 5a of the bending punch 501 is A step portion 5c that faces the side (that is, faces the pressing direction P) is formed. The thickening punch 6 is disposed on the outer peripheral side of the bending punch 501 and is directly attached to the punch plate 13. The thickening punch 6 has a lower end portion that protrudes downward on the inner diameter side to form the tip end portion 6a. A step portion 6c facing upward (that is, facing a direction opposite to the pressing direction P) is formed on the inner peripheral surface 6b of the thickening punch 6 so as to face the step portion 5c of the bending punch 501. ing. With the configuration of the bending punch 501 and the thickening punch 6, the outer peripheral surface 5a of the bending punch 501 is guided by the inner peripheral surface 6b of the thickening punch 6, and the direction of the axis 1b It becomes possible to move to.

  Then, the manufacturing method of the thickening press product 2 using this metal mold | die 3 is demonstrated in order, First, as shown in FIG. 1, it is the inside of the die | dye 7 in the lower mold | type 3a, and is processed on the knockout 4 The workpiece 1 is placed, the upper die 3b is lowered, and the workpiece 1 is pressed by the bending punch 501 (plate presser 5). Specifically, until the rising portion 1c of the workpiece 1 comes into contact with the tip of the second receiving surface 7c of the die 7, the bending punch 501 is moved from the main body 1a of the workpiece 1 and the main body 1a. The middle part of the rising part 1c is pressed down.

  Then, as shown in FIG. 2, the upper die 3 b is further lowered, and the workpiece 1 is pushed in the pressing direction P with the bending punch 501 (that is, the bending punch 501 is relative to the die 7. The rising portion 1c of the workpiece 1 is pressed between the bending punch 501 and the tip end portion of the second receiving surface 7c of the die 7 to move the rising portion 1c of the workpiece 1 to the tip portion 1d of the rising portion 1c. Is bent so that it stands up from the base end side.

  Subsequently, as shown in FIG. 3, the upper die 3 b (specifically, the punch for increasing the thickness 6 of the upper die 3 b) is further lowered, and the workpiece 1 rises in the press direction P with the punch for increasing the thickness 6. By crushing the part 1 c, the die 7 is moved in the press direction P relative to the knockout 4, and the rising part 1 c is thickened. In this way, the thickened press product 2 including the increased thickness rising portion 2a in which the rising portion 1c is increased in thickness is formed.

  According to the manufacturing method of the thickening press product 2, the thickening punch 6 and the die 7 can be moved relative to each other in the direction of the axis 1b (vertical direction) of the main body 1a. In the process of pressing the tip of the rising portion 1 c downward, the die 7 is pushed by the rising portion 1 c that is being thickened without being pushed by the thickening punch 6, and is relative to the knockout 4. Move (descent) to. That is, there is no direct relationship between the moving length (falling length) of the thickening punch 6 and the moving length (falling length) of the die 7, and the die 7 is pushed relative to the rising portion 1c that is being thickened. Thus, the volume of the space sandwiched between the die 7 and the bending punch 501 (the plate retainer 5) is determined for the first time. For this reason, compared with the case where the thickening punch 6 and the die 7 are moved (lowered) integrally, the shape of the rising portion 1c to be thickened is less limited, and the degree of freedom of the shape can be increased. it can.

  Further, by using the plate retainer 5 as the bending punch 501, the bending of the tip portion 1d of the rising portion 1c and the increase in the thickness of the rising portion 1c can be performed with one mold. Then, by bending the leading end portion 1d of the rising portion 1c, the thickening punch 6 is accurately applied to the leading end of the rising portion 1c when the rising portion 1c is thickened, or the thickening punch 6 is bent. The punch 501 (the plate holder 5) can be made to enter deeply between the outer peripheral surface 5a and the inner peripheral surface 7a of the die 7.

  4 to 6 show a second embodiment of the present invention. This embodiment uses a thickened press product 2 manufactured by the manufacturing method described in the first embodiment as a semi-finished product 201, and a thickened rising portion that becomes a thickened rising portion of the semi-finished product 201. Drawing is applied so that 2a stands straight in the direction of the axis 1b that faces the front and back of the main body 1a.

  The second mold 15 for performing the drawing process includes a second knockout 16, a second die 17, a drawing punch 18, and an upsetting punch 19. Here, the 2nd knockout 16 receives the main-body part 1a of the semi-finished product 201 by the other side 102 opposite to the one side 101 used as the side from which the thickness rising part 2a rises. The second die 17 is disposed on the outer peripheral side of the second knockout 16 and is movable relative to the second knockout 16 in the direction of the axis 1b. The aperture punch 18 presses the main body 1a on the one side 101. The upsetting punch 19 is arranged on the outer peripheral side of the throttle punch 18 and is movable in the axial center 1b direction relative to the throttle punch 18.

  Therefore, the second die 15 allows the drawing punch 18 to push the semi-finished product 201 into the second die 17 so that the one side 101 in the direction of the axis 1b is relatively to the second die 17. Is moved in the pressing direction P, which is a direction toward the other side 102, and the thickened rising portion 2a is narrowed so as to stand straight up in the direction of the axis 1b (see FIGS. 4 and 5). Subsequently, the upsetting punch 19 moves in the pressing direction P relative to the second knockout 16 so as to press the tip 2b of the thickening rising portion 2a, and the thickening rising portion 2a is moved. The tip 2b of the thickened rising portion 2a and the rear end 2c on the opposite side of the tip 2b of the increased thickness rising portion 2a are placed between the second knockout 16, the second die 17, and the squeezing punch 18. (See FIGS. 5 and 6).

  Specifically, the second mold 15 has a lower mold 15 a attached to the die base 20, the second knockout 16, the second die 17, and the second knockout 16 attached to the die base 20. It consists of a product guide 21. Here, the second knockout 16 is attached to the die base 20 via the fourth cushion 22. A stepped portion 16b is formed on the outer peripheral surface 16a of the second knockout 16 so as to face upward (that is, face in the direction opposite to the pressing direction P). The second die 17 is disposed on the outer peripheral side of the second knockout 16 and is directly attached to the die base 20. Then, a stepped portion 17 b facing downward (that is, facing the pressing direction P) is formed on the inner peripheral surface 17 a of the second die 17 so as to face the stepped portion 16 b of the second knockout 16. With the configuration of the second knockout 16 and the second die 17, the outer peripheral surface 16a of the second knockout 16 is guided by the inner peripheral surface 17a of the second die 17 and can move in the direction of the axis 1b. It becomes. The second product guide 21 is provided at the center of the upper surface of the second knockout 16, and the shaft hole 1 e provided at the center of the main body 1 a of the semi-finished product 201 is fitted into the second product guide 21.

  The second mold 15 includes an upper mold 15b including the punch plate 23 and the aperture punch 18 and the upsetting punch 19 attached to the punch plate 23. Here, the aperture punch 18 is attached to the punch plate 23 via the fifth cushion 24. Then, a step portion 18 b facing downward (that is, facing the pressing direction P) is formed on the outer peripheral surface 18 a of the punching punch 18. The upsetting punch 19 is disposed on the outer peripheral side of the narrowing punch 18 and is directly attached to the punch plate 23. In this upsetting punch 19, the lower end portion that protrudes downward on the inner diameter side becomes a tip end portion 19 a, and is between the outer peripheral surface 18 a of the drawing punch 18 and the inner peripheral surface 17 a of the second die 17. It will enter and will press the front-end | tip 2b of the thickening rising part 2a. A step portion 19c facing upward (that is, facing the direction opposite to the pressing direction P) is formed on the inner peripheral surface 19b of the upsetting punch 19 so as to face the step portion 18b of the drawing punch 18. ing. The diaphragm punch 18 and the upset punch 19 are configured so that the outer peripheral surface 18a of the throttle punch 18 is guided by the inner peripheral surface 19b of the upset punch 19, and the direction of the axis 1b. It becomes possible to move to.

  Therefore, the additional steps using the second mold 15 will be described in order. First, as shown in FIG. 4, as shown in FIG. 4, half of the second die 17 is placed inside the second die 17 and on the second knockout 16. The product 201 is placed, the upper die 15 b is lowered, and the body portion 1 a of the semi-finished product 201 is pressed by the punching punch 18.

  Then, as shown in FIG. 5, the upper die 15 b is further lowered, and the semi-finished product 201 is pushed in the pressing direction P by the punching punch 18 (that is, the punching punch 18 is relative to the second die 17. Thus, the thickened rising portion 2a of the semi-finished product 201 is narrowed so as to stand straight up in the direction of the axis 1b.

  Subsequently, as shown in FIG. 6, the upper die 15 b is further lowered, and the thickening rising portion 2 a is pressed in the pressing direction P by the upsetting punch 19, whereby the tip 2 b of the thickening rising portion 2 a is pressed. And the rear end 2c are formed on a required surface. In the illustrated embodiment, the front end 2b and the rear end 2c of the thickening rising portion 2a are planes perpendicular to the direction of the axis 1b, and in particular, the rear end 2c is the lower surface of the main body 1a (the other side 102 Surface).

  According to the additional process using the second mold 15, the increased thickness rising portion 2 a is erected straight in the direction of the axis 1 b with one mold (second mold 15), and the straight erected increase is performed. The front end 2b and the rear end 2c of the meat rising portion 2a can be formed on a required surface, whereby the process can be shortened.

  In addition, this invention is not necessarily limited to embodiment mentioned above, A various other change is possible. For example, the thickened press product 2 may be any product as long as the rising portion is thickened, not the clutch piston material.

  Further, the workpiece 1 may be made of another metal plate such as an aluminum alloy or a magnesium alloy, or may be made of a material other than the metal plate, without being made of a steel plate.

  Moreover, although the shaft hole 1e is opened in the center of the main-body part 1a, the workpiece 1 does not need to have this shaft hole 1e. Further, the main body 1a may be other shapes such as an elliptical plate shape or the like, and may not be a flat plate shape, but may be formed with a convex portion or a concave portion, curved or bent. It may be.

  Further, in the first embodiment, the rising portion 1c is bent and increased in thickness by a single mold 3. However, with respect to the workpiece to which the tip portion 1d of the rising portion 1c is bent in advance, You may increase the thickness of the rising part 1c. Further, as shown in FIGS. 7 and 8, the leading end portion of the rising portion 1c is not bent, that is, the rising portion 1c is thickened with respect to the workpiece 1 in which the rising portion 1c rises diagonally outward. May be performed. Here, FIG. 7 is an enlarged cross-sectional view of a main part corresponding to FIG. 2, and FIG. 8 is an enlarged cross-sectional view of a main part corresponding to FIG.

  Further, in the thickening press product 2 shown in the second embodiment, the front end 2b and the rear end 2c of the thickening rising portion 2a are flat surfaces with respect to the axial center 1b direction due to upsetting. However, for example, an arbitrary inclined surface may be formed, or a groove, a ridge, a step, or the like may be formed by upsetting.

  Further, in the thickening press product 2 shown in the second embodiment, the thickening rising portion 2a is squeezed and installed, but the installation may be omitted. Moreover, after manufacturing the thickened press product 2 shown in the first embodiment, the press work shown in the second embodiment is performed, but without performing the press work shown in the second embodiment. A finished product may be obtained at the stage of the thickened press product 2 shown in the first embodiment.

  Moreover, after manufacturing the thickened press product 2 shown in the first or second embodiment, post-processing such as cutting may be added to complete the product.

It is sectional drawing which shows the 1st step of the process of manufacturing the thickness increase press product of 1st embodiment of this invention. Similarly, it is sectional drawing which shows a 2nd step. Similarly, it is sectional drawing which shows a 3rd step. It is sectional drawing which shows the 1st step of the additional process of manufacturing the thickness increase press product of 2nd embodiment of this invention. Similarly, it is sectional drawing which shows the 2nd step of an additional process. Similarly, it is sectional drawing which shows the 3rd step of an additional process. It is a principal part expanded sectional view equivalent to FIG. 2 of other embodiment of this invention. Similarly, it is a principal part expanded sectional view equivalent to FIG. It is sectional drawing which shows the thickening process by the conventional metal mold | die in steps.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Work object 1a Main body part 1b Shaft center 1c Rising part 1d Tip part 101 One side 102 Other side 2 Thickening press product 2a Thickening rising part 2b Tip 2c Rear end 201 Semi-finished product 3 Die 4 Knockout 5 Plate press 5a outer peripheral surface 501 bending punch 6 thickening punch 6a tip portion 7 die 7a inner peripheral surface 7b first receiving surface 7c second receiving surface 15 second mold 16 second knockout 17 second die 18 squeezing punch 19 setting Insert punch P Press direction

Claims (5)

For a workpiece to be processed, comprising a plate-shaped main body, and a rising portion that rises obliquely outward on one side in the axial direction facing the front and back of the main body from the outer peripheral edge of the main body, A method of manufacturing a thickened press product by increasing the thickness of the rising portion with a press,
Receiving the main body on the other side opposite to the one side;
A plate presser that presses the main body part and the main body part to the middle position of the rising part on the one side;
A thickening punch that is arranged on the outer peripheral side of the plate presser and presses the tip of the rising portion in a pressing direction that is a direction from one side of the axial direction toward the other side,
A die that is disposed on an outer peripheral side of the knockout and that is movable in the axial direction relative to the knockout and the punch for increasing the thickness, and that receives the other side of the rising portion. , Using the mold
In the process of pressing the tip of the rising part in the pressing direction with the thickening punch, and crushing the rising part,
The tip portion of the thickening punch enters between the outer peripheral surface of the plate presser and the inner peripheral surface of the die, and the die is being thickened without being pushed by the thickening punch. By being pushed by the rising portion and moving in the pressing direction relative to the knockout, the space between the plate presser and the die sandwiching the rising portion is widened, and the rising portion is increased in thickness. A method for producing a thickened press product. In the manufacturing method of the thickening press product of Claim 1,
The method for manufacturing a thickened press product, wherein the workpiece is bent so that a distal end portion of the rising portion rises from a proximal end side. In the manufacturing method of the thickening press product of Claim 1,
The die is formed to be bent so as to extend from the first receiving surface and to stand up from the first receiving surface, and to be opposed to the first receiving surface in parallel with the rising portion of the workpiece. A second receiving surface for receiving a tip portion of the rising portion,
Prior to increasing the thickness of the rising portion, the plate presser becomes a bending punch and moves in the pressing direction relative to the die, so that the rising portion is moved between the bending punch and the die. A method for manufacturing a thickened press product, wherein the method is configured to press the second receiving surface and bend the tip portion of the rising portion so as to stand up from the base end side.   A thickened press product manufactured by the manufacturing method according to any one of claims 1 to 3 is a semi-finished product, and a thickened rising portion that becomes a thickened rising portion of the semi-finished product is in the axial direction. A method for producing a thickened press product, characterized by adding a drawing process so as to stand upright. In the manufacturing method of the thickening press product of Claim 4,
The second mold for performing the drawing process is
A second knockout receiving the main body on the other side;
A second die disposed on the outer peripheral side of the second knockout and movable in the axial direction relative to the second knockout;
A squeezing punch that presses the main body on the one side;
An upset punch arranged on the outer peripheral side of the drawing punch and movable in the axial direction relative to the drawing punch;
The squeezing punch moves in the pressing direction relative to the second die so as to push the semi-finished product into the second die, and the increased thickness rising portion is moved in the axial direction. Squeeze to stand upright, then
The upsetting punch moves in the pressing direction relative to the second knockout so as to press the tip of the increased thickness rising portion, and the increased thickness rising portion is referred to as the second knockout. It is installed between the second die and the punch for squeezing, and the tip of the increased thickness rising portion and the rear end opposite to the tip are formed on a required surface. Manufacturing method of meat press products.

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