Elliptical hole anti-sliding sleeve cold heading die

Abstract

The utility model discloses a cold heading die for an anti-slip sleeve with an elliptical hole. The cold heading die comprises a main die end and a stamping die end, the main die end is composed of a main die shell, a sleeve piece, a main die core, a main die cushion block, a threaded pad gasket, a threaded pad, a main die stamping rod, a main die sleeve, a main die sleeve gasket, a main die four-hole pad, a positioning pin, a main die three-hole pad, a spring and a main die three-needle. The punching die end is composed of a punching die shell, a threaded hole, a threaded hole, a punching die punching rod, a punching die sleeve, a punching die sleeve gasket, a punching die four-hole pad, a punching die three-hole pad, a punching die rear pad, a punching die three-needle and a three-needle cushion block. Compared with a traditional technology, the mode that the blank is subjected to cold heading firstly, then the anti-sliding spline teeth and the oval holes on the end face of the sleeve are machined again through the machining center and finally formed is adopted, and the beneficial effects of being short in part machining period, low in machining cost and good in part size consistency are achieved. The sizes of the anti-sliding flower teeth of the sleeve type part with the anti-sliding flower teeth on the end face of the elliptical hole formed through final heading are consistent, the internal metal streamline is complete, and the sliding force is stable.

Description

Technical Field

[0001] The utility model belongs to the technical field of cold heading forming of automobile parts, in particular to a cold heading die for sleeve-type parts with an elliptical hole end surface and anti-slip tooth patterns. Background Art

[0002] like Figure 4 As shown, the existing process for sleeve parts with anti-slip teeth on the end face of an elliptical hole involves cold forging the sleeve blank to create the outer contour and a circular hole smaller than the minor axis of the elliptical hole. This process then involves shaping in the first step, reshaping in the second step, drilling in the third step, preforming the head in the fourth step, drilling the through hole in the fifth step, and finally final forging in the sixth step. A machining center then processes the anti-slip teeth and the elliptical hole again. This process has drawbacks: long processing cycles, high costs, poor part consistency, low production efficiency, and, most importantly, low strength of the anti-slip teeth and unstable sliding force. Summary of the Invention

[0003] The technical problem to be solved by the utility model is to improve a die for completing sleeve outer contour, end face anti-slip teeth and elliptical hole forming process in one go by six-sequence final upsetting.

[0004] In order to solve the above technical problems, the present invention is achieved through the following technical solutions: a cold heading die for an elliptical hole anti-slip sleeve, comprising a main die end and a punch die end;

[0005] The main mold end is composed of a main mold shell, a sleeve, a main mold core, a main mold pad, a threaded pad washer, a threaded pad, a main mold punch, a main mold sleeve, a main mold sleeve gasket, a main mold four-hole pad, a positioning pin, a main mold three-hole pad, a spring and a main mold three-needle. The sleeve is fixedly installed at the front end of the main mold shell, and the main mold core, the main mold pad, the threaded pad washer and the threaded pad are installed in the main mold shell from left to right. The threaded pad washer is screwed and fixedly installed at the right end of the main mold shell to press the main mold core and the main mold pad tightly. The sleeve is also fixedly installed in the main mold core, and the main mold four-hole pad is installed in the threaded pad washer. The threaded pad is screwed and fixedly installed at the right end of the main mold shell to press the main mold four-hole pad tightly. The right end of the main mold punch is slidably installed on the elliptical plate on the main mold four-hole pad. The right end of the main mold punch rod is formed in the elliptical hole at the left end of the round countersunk hole, and the anti-slip structure is slidably installed in the right circular hole at the right end of the elliptical countersunk hole, and the left end of the main mold punch rod is located in the sleeve, and there is a product accommodating gap between the main mold punch rod and the sleeve, the main mold sleeve and the main mold sleeve gasket are both fixedly sleeved and installed on the main mold punch rod, the main mold sleeve is fixedly connected to the main mold sleeve gasket, the right end of the main mold sleeve gasket can be against the main mold three needles, the main mold three-hole pad is fixedly installed in the threaded pad, the main mold three needles are slidably installed in the main mold three-hole pad, the inner end of the main mold three needles is in contact with the main mold sleeve gasket, the spring is installed in the blind hole on the left side of the main mold three-hole pad, and the left end of the spring acts on the main mold punch rod;

[0006] The die end is composed of a die shell, a third threaded hole, a second threaded hole, a die punch rod, a die sleeve, a die sleeve gasket, a die four-hole pad, a die three-hole pad, a die back pad, a die three needles and a three-needle pad. The left and right ends of the die shell are coaxially provided with a first through hole and a second through hole that are connected to each other. The diameter of the first through hole is larger than the diameter of the second through hole. The first through hole is sequentially provided with a die four-hole pad, a die three-hole pad and a die back pad from right to left. The die back pad is installed on the die shell to connect the die three-hole The die is pressed against the pad and the four-hole pad of the die. The die punch rod is fixedly connected to the four-hole pad of the die. The die sleeve and the die sleeve gasket are both slidably sleeved and installed on the die punch rod. The die sleeve is fixedly connected to the die sleeve gasket. The die sleeve is also slidably installed in the second through hole. The three needles of the die are slidably installed in the four-hole pad of the die and the three-hole pad of the die. The right end of the three needles of the die can contact with the die sleeve gasket. The three-needle pad is slidably installed in the rear pad of the die. The left end of the three needles of the die is in contact with the three-needle pad.

[0007] Preferably, the main mold pad and the main mold four-hole pad are cooperatively provided with a first guide pin hole and a second guide pin hole, and positioning pins are inserted and installed in the first guide pin hole and the second guide pin hole.

[0008] Preferably, a first flat position is provided at the left end of the punch rod, and a first threaded hole is provided on the four-hole pad of the punch, a first bolt is threadedly installed in the first threaded hole, and the first bolt is crimped on the first flat position.

[0009] Preferably, a second flat position is provided on the top of the three-hole die pad, and a second threaded hole is provided on the die shell. A second bolt is threadedly installed in the second threaded hole, and the second bolt is crimped on the second flat position.

[0010] Preferably, a third flat position is provided on the top of the die sleeve, and a third threaded hole is provided on the die shell. A third bolt is threadedly installed in the third threaded hole, and the third bolt is crimped on the third flat position.

[0011] Compared with the prior art, the utility model has the following advantages:

[0012] This mold is used to perform final upsetting of sleeve parts with anti-slip teeth on the end face of an elliptical hole. Compared with the traditional process, which first cold-forging the blank and then using the machining center to re-process the anti-slip teeth and elliptical hole on the sleeve end face for final forming, it has the advantages of short part processing cycle, low processing cost and good part size consistency.

[0013] The main die punch with an elliptical structure adopts an anti-rotation installation structure in the main die, and the die punch with an elliptical end and a round rod adopts an anti-installation structure in the die. This can ensure that the anti-slip teeth of the sleeve-type parts with anti-slip teeth on the end face of the elliptical hole formed by the final upsetting are consistent in size, the internal metal streamlines are complete, and the sliding force is stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described below with reference to the accompanying drawings.

[0015] Figure 1 It is a schematic diagram of the internal structure of the present utility model.

[0016] Figure 2 It is a structural diagram of the main die punch.

[0017] Figure 3 It is a structural diagram of the die and punch.

[0018] Figure 4 It is a process flow chart of the prior art. DETAILED DESCRIPTION

[0019] The present invention is described in detail below in conjunction with specific embodiments:

[0020] like Figure 1 The cold heading die for an elliptical hole anti-slip sleeve shown includes a main die end and a punch die end;

[0021] The main mold end is composed of a main mold shell 1, a sleeve 2, a main mold core 3, a main mold pad 4, a threaded pad washer 5, a threaded pad 6, a main mold punch 7, a main mold sleeve 8, a main mold sleeve gasket 9, a main mold four-hole pad 10, a positioning pin 11, a main mold three-hole pad 12, a spring 13 and a main mold three-pin 14. The sleeve 2 is fixedly installed at the front end of the main mold shell 1, and the main mold core 3, the main mold pad 4, the threaded pad washer 5, and the threaded pad 6 are installed in the main mold shell 1 from left to right in sequence. The threaded washer 5 is screwed and fixedly installed at the right end of the main mold shell 1 to press the main mold core 3 and the main mold pad 4 tightly. The sleeve 2 is also fixedly installed in the main mold core 3. The main mold four-hole pad 10 is installed in the threaded washer 5. The threaded pad 6 is screwed and fixedly installed at the right end of the main mold shell 1 to press the main mold four-hole pad 10 tightly. The right end of the main mold punch 7 is slidably installed in the left end elliptical hole of the elliptical countersunk hole on the main mold four-hole pad 10. The right end of the main mold punch 7 is shaped The anti-slip structure is slidably installed in the right circular hole of the elliptical countersunk hole, and the left end of the main mold punch rod 7 is located in the sleeve 2, and there is a product accommodating gap between the main mold punch rod 7 and the sleeve 2. The main mold sleeve 8 and the main mold sleeve gasket 9 are fixedly sleeved and installed on the main mold punch rod 7. The main mold sleeve 8 is fixedly connected to the main mold sleeve gasket 9. The right end of the main mold sleeve gasket 9 can be against the main mold three needles 14, and the main mold three-hole pad 12 is fixed. Installed in the threaded pad 6, the main mold three needles 14 are slidably installed in the main mold three-hole pad 12, the inner end of the main mold three needles 14 is in contact with the main mold sleeve gasket 9, the spring 13 is installed in the blind hole 1201 on the left side of the main mold three-hole pad 12, and the left end of the spring 13 acts on the main mold punch 7. The spring 13 makes the main mold punch 7 elastic, ensuring that the elliptical hole of the part 15 is not deformed during the final upsetting process; the main section of the main mold punch is an elliptical structure;

[0022] The die end is composed of a die shell 16, a third threaded hole 1601, a second threaded hole 1602, a die punch rod 17, a die sleeve 18, a die sleeve gasket 19, a die four-hole pad 20, a die three-hole pad 21, a die back pad 22, a die three needles 23 and a three-needle pad block 24. The left and right ends of the die shell 16 are coaxially provided with a first through hole and a second through hole that are connected to each other. The diameter of the first through hole is larger than the diameter of the second through hole. The first through hole is sequentially provided with a die four-hole pad 20, a die three-hole pad 21 and a die back pad 22 from right to left. The die back pad 22 is installed on the die shell 16 to connect the die three-hole The die punch rod 17 is fixedly connected to the die four-hole pad 20. The die sleeve 18 and the die sleeve gasket 19 are both slidably mounted on the die punch rod 17. The die sleeve 18 is fixedly connected to the die sleeve gasket 19. The die sleeve 18 is also slidably mounted in the second through hole. The die three needles 23 are slidably mounted in the die four-hole pad 20 and the die three-hole pad 21. The right end of the die three needles 23 can contact the die sleeve gasket 19. The three-needle pad 24 is slidably mounted in the die rear pad 22. The left end of the die three needles 23 is in contact with the three-needle pad 24. The die punch rod has an elliptical end and a circular rod. The right end face of the die sleeve 18 is provided with a tooth. The front end of the right end contacts the head of the part 15, forming an anti-slip tooth and controlling the thickness of the head of the part 15.

[0023] The main mold pad 4 and the main mold four-hole pad 10 are cooperatively provided with a first guide pin hole 401 and a second guide pin hole 1001. The first guide pin hole 401 and the second guide pin hole 1001 are inserted with a positioning pin 11 to fix the elliptical direction of the die punch 17.

[0024] The left end of the punch rod 17 is provided with a first flat position 1701, and the four-hole punch pad 20 is provided with a first threaded hole 2001. A first bolt is screwed into the first threaded hole 2001, and the first bolt is pressed onto the first flat position 1701. The top of the three-hole punch pad 21 is provided with a second flat position 2101, and the die shell 16 is provided with a second threaded hole 1602. A second bolt is screwed into the second threaded hole 1602, and the second bolt is pressed onto the second flat position 2101. The top of the die sleeve 18 is provided with a third flat position 1801, and the die shell 16 is provided with a third threaded hole 1601. A third bolt is screwed into the third threaded hole 1601, and the third bolt is pressed onto the third flat position 1801. The first bolt passes through the die shell 16 and is screwed into the first threaded hole 2001 on the die four-hole pad 20. After the first bolt, the second bolt and the third bolt are tightened, their heads are pressed against the outer surface of the die shell 16. At this time, the first bolt, the second bolt and the third bolt are respectively pressed against the first flat position 1701, the second flat position 2101 and the third flat position 1801 to ensure that the installation direction of the die punch 17, the die three-hole pad 21 and the die sleeve 18 is fixed.

[0025] go through Figure 3 The part 15 completed by the cold heading in the fifth sequence is sleeved on the main die punch 7, and the limiting position of the main die three needles 14 to the main die sleeve gasket 9 and the main die sleeve 8 assembly is adjusted, thereby realizing the adjustment of the main die sleeve 8 to the limiting position of the right end face of the part 15, pushing the combination of the three needle pad 24 and the die three needles 23 to move to the right, thereby pushing the combination of the die sleeve gasket 19 and the die sleeve 18 to move to the right, adjusting the relative position of the die sleeve 18 and the die punch 17, and tightening the third bolt to tighten the third flat of the die sleeve 18. Position 1801 is pressed and limited, and the three-needle pad 24 is fixed at the same time. The driving mechanism of the cold heading equipment pushes the die shell 16 to drive the die punch 17 and the die sleeve 18 to move synchronously to the right. The die punch 17, the die sleeve 18 cooperate with the main die punch 7 and the sleeve 2 to perform the final forging sleeve end face anti-slip teeth and elliptical hole forming processing on the part 15. After completion, the die end is separated from the main die end, and the main die three needles 14 are used to push the combination of the main die sleeve 8 and the main die sleeve gasket 9 to move to the left to eject the part 15 outward.

Claims

1. A cold heading die for an elliptical anti-slip sleeve, characterized by: Including the main die end and the punch die end; The main mold end is composed of a main mold shell (1), a sleeve (2), a main mold core (3), a main mold pad (4), a threaded pad washer (5), a threaded pad (6), a main mold punch (7), a main mold sleeve (8), a main mold sleeve washer (9), a main mold four-hole pad (10), a positioning pin (11), a main mold three-hole pad (12), a spring (13) and a main mold three-pin (14). The sleeve (2) is fixedly installed at the front end of the main mold shell (1), and the main mold core (3) is installed in the main mold shell (1) from left to right. ), main mold pad (4), threaded pad washer (5), threaded pad (6), the threaded pad washer (5) is screwed and fixedly installed on the right end of the main mold shell (1) to press the main mold core (3) and the main mold pad (4) tightly, the sleeve (2) is also fixedly installed in the main mold core (3), the main mold four-hole pad (10) is installed in the threaded pad washer (5), the threaded pad (6) is screwed and fixedly installed on the right end of the main mold shell (1) to press the main mold four-hole pad (10) tightly, the right end of the main mold punch (7) slides The main mold punch rod (7) is installed in the left end elliptical hole of the elliptical countersunk hole on the main mold four-hole pad (10), and the right end of the main mold punch rod (7) forms an anti-slip structure. The anti-slip structure is slidably installed in the right end of the circular hole of the elliptical countersunk hole, and the left end of the main mold punch rod (7) is located in the sleeve (2), and there is a product accommodating gap between the main mold punch rod (7) and the sleeve (2). The main mold sleeve (8) and the main mold sleeve gasket (9) are both slidably sleeved and installed on the main mold punch rod (7). The main mold sleeve (8) and the main mold sleeve gasket are slidably sleeved and installed on the main mold punch rod (7). (9) is fixedly connected, the right end of the main mold sleeve gasket (9) can be against the main mold three needles (14), the main mold three-hole gasket (12) is fixedly installed in the threaded gasket (6), the main mold three needles (14) are slidably installed in the main mold three-hole gasket (12), the inner end of the main mold three needles (14) is in contact with the main mold sleeve gasket (9), the spring (13) is installed in the blind hole (1201) on the left side of the main mold three-hole gasket (12), and the left end of the spring (13) acts on the main mold punch (7); The die end is composed of a die shell (16), a third threaded hole (1601), a second threaded hole (1602), a die punch rod (17), a die sleeve (18), a die sleeve gasket (19), a die four-hole pad (20), a die three-hole pad (21), a die back pad (22), a die three-needle (23) and a three-needle pad block (24). The left and right ends of the die shell (16) are coaxially provided with a first through hole and a second through hole that are intersecting. The diameter of the first through hole is larger than the diameter of the second through hole. The first through hole is sequentially provided with a die four-hole pad (20), a die three-hole pad (21) and a die back pad (22) from right to left. The die back pad (22) is installed on the die shell (16) to connect the die three-hole pad ( 21), the die four-hole pad (20) is pressed, the die punch rod (17) is fixedly connected to the die four-hole pad (20), the die sleeve (18) and the die sleeve gasket (19) are both slidably sleeved and installed on the die punch rod (17), the die sleeve (18) and the die sleeve gasket (19) are fixedly connected, the die sleeve (18) is also slidably installed in the second through hole, the die three needles (23) are slidably installed in the die four-hole pad (20) and the die three-hole pad (21), the right end of the die three needles (23) can contact the die sleeve gasket (19), the three-needle pad (24) is slidably installed in the die rear pad (22), and the left end of the die three needles (23) is in contact with the three-needle pad (24).

2. The cold heading die for an elliptical anti-slip sleeve according to claim 1, characterized in that: The main mold cushion block (4) and the main mold four-hole cushion (10) are cooperatively provided with a first guide pin hole (401) and a second guide pin hole (1001), and a positioning pin (11) is inserted and installed in the first guide pin hole (401) and the second guide pin hole (1001).

3. The cold heading die for an elliptical hole anti-slip sleeve according to claim 1, characterized in that: A first flat position (1701) is provided at the left end of the punching die rod (17), and a first threaded hole (2001) is provided on the punching die four-hole pad (20). A first bolt is threadedly installed in the first threaded hole (2001), and the first bolt is pressed onto the first flat position (1701).

4. The cold heading die for an elliptical hole anti-slip sleeve according to claim 1, characterized in that: A second flat position (2101) is provided on the top of the punch three-hole pad (21), and a second threaded hole (1602) is provided on the punch shell (16). A second bolt is threadedly installed in the second threaded hole (1602), and the second bolt is pressed onto the second flat position (2101).

5. The cold heading die for an elliptical hole anti-slip sleeve according to claim 1, characterized in that: A third flat position (1801) is provided on the top of the die sleeve (18), and a third threaded hole (1601) is provided on the die shell (16). A third bolt is threadedly installed in the third threaded hole (1601), and the third bolt is pressed onto the third flat position (1801).

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