Flower sleeve integrated forming cold pressurizing mold

Abstract

The flower sleeve is provided with three pins, a curved surface, a spline shaft positioning boss and other structures, the coaxiality requirements of the three pins, the curved surface, the spline shaft positioning boss and the like are high, and the precision requirements of coaxiality and the like are difficult to guarantee by adopting a traditional turn-milling machining method. In order to solve the problem, the utility model provides a flower sleeve integrated forming cold pressurizing die which comprises an upper female die pre-tightening ring, a positioning sleeve, an upper female die core, a lower female die pre-tightening ring, a lower female die core, an ejector rod, a bolt I, a male die fixing seat, a curved surface pressure head sleeve, a curved surface pressure head, a guide column, a positioning pin and a bolt II. The cold pressurizing die has the advantages that the three pins, the curved surface and the spline shaft positioning boss of the spline sleeve can be formed at the same time, the position degree and consistency of the three pins are guaranteed, the coaxiality of the three pins, the curved surface and the spline shaft positioning boss is also guaranteed, and through positioning of the spline shaft positioning boss, the precision of the spline shaft is guaranteed. And the coaxiality of the spline shaft positioning boss, the curved surface and the three pins is indirectly ensured.

Description

Technical Field

[0001] The utility model relates to a cold extrusion die, in particular to a cold pressing die for integrally forming a flower sleeve. Background Art

[0002] The spline sleeve is one of the key parts in the automobile one-way clutch. It has structures such as three pins, curved surfaces and spline shaft positioning bosses, and their coaxiality requirements are very high. It is difficult to ensure the coaxiality and other precision requirements using traditional turning and milling methods. Summary of the invention

[0003] In order to solve the above-mentioned problem, the utility model provides a cold pressurizing die for integrally forming a flower sleeve.

[0004] The technical solution adopted by the utility model is:

[0005] The flower sleeve integrated forming cold pressurized mold comprises an upper die preload ring, a positioning sleeve, an upper die core, a lower die preload ring, a lower die core, an ejector rod, a bolt I, a punch fixing seat, a curved pressure head sleeve, a curved pressure head, a guide column, a positioning pin and a bolt II; the lower die core is fixed in the lower die preload ring; the ejector rod passes through the lower die core from the middle; the upper die core is fixed to the lower die core through a boss and forms a complete die with the lower die core; the positioning sleeve is sleeved on the outside of the upper die core; the upper die preload ring is sleeved on the outside of the positioning sleeve and is fixed by a plurality of bolts I; the curved pressure head is sleeved in the curved pressure head sleeve; the punch fixing seat is sleeved on the outside of the curved pressure head sleeve; the guide column is sleeved on the outside of the curved pressure head and is positioned by the positioning pin and fixed to the punch fixing seat by the bolt II.

[0006] The beneficial effect of the utility model is that by utilizing the one-piece cold-pressing mold for forming the spline sleeve, the three column pins and the curved surface and the spline shaft positioning boss of the spline sleeve can be formed simultaneously, thereby ensuring the position accuracy and consistency of the three column pins, while also ensuring the coaxiality with the curved surface and the spline shaft positioning boss. Through the positioning of the spline shaft positioning boss, the coaxiality of the spline shaft positioning boss and the curved surface and the three column pins is also indirectly guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] The following is further described in conjunction with the figures of the present utility model:

[0008] Figure 1 It is a schematic diagram of the structure of the utility model.

[0009] In the figure, 1. upper die preload ring, 2. positioning sleeve, 3. upper die core, 4. lower die preload ring, 5. lower die core, 6. ejector rod, 7. bolt I, 8. punch fixing seat, 9. curved pressure head sleeve, 10. curved pressure head, 11. guide column, 12. positioning pin, 13. bolt II, 14. flower sleeve. DETAILED DESCRIPTION

[0010] The flower sleeve integrated cold pressurized mold comprises an upper die preload ring 1, a positioning sleeve 2, an upper die core 3, a lower die preload ring 4, a lower die core 5, an ejector rod 6, a bolt I7, a punch fixing seat 8, a curved surface pressure head sleeve 9, a curved surface pressure head 10, a guide column 11, a positioning pin 12 and a bolt II13; the lower die core 5 is fixed in the lower die preload ring 4; the ejector rod 6 passes through the lower die core 5 from the middle; the upper die core 3 is fixed on the lower die core 5 through a boss, and It forms a complete die together with the lower die core 5; the positioning sleeve 2 is sleeved on the outside of the upper die core 3; the upper die preload ring 1 is sleeved on the outside of the positioning sleeve 2 and is fixed by a plurality of bolts I7; the curved pressure head 10 is sleeved in the curved pressure head sleeve 9; the punch fixing seat 8 is sleeved on the outside of the curved pressure head sleeve 9; the guide column 11 is sleeved on the outside of the curved pressure head 10, and is positioned by the positioning pin 12 and fixed to the punch fixing seat 8 by the bolt II13.

[0011] When using the flower sleeve one-piece forming cold press mold, it is only necessary to put the blank into the die formed by the upper die core 3 and the lower die core 5, and then start the hydraulic press. The hydraulic press drives the curved ram 10 to move downward, and the guide column 11 is pressed into the positioning sleeve 2, thereby extruding the blank to form a flower sleeve 14 formed part. Finally, the ejector rod 6 moves upward to eject the flower sleeve 14, completing the one-piece cold extrusion forming of the flower sleeve 14.

[0012] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A cold pressurized mold for integrally forming a flower sleeve, comprising an upper die preload ring, a positioning sleeve, an upper die core, a lower die preload ring, a lower die core, an ejector rod, a bolt I, a punch fixing seat, a curved surface pressure head sleeve, a curved surface pressure head, a guide column, a positioning pin and a bolt II; its characteristics are: The lower die core is fixed in the lower die preload ring; the ejector rod passes through the lower die core from the middle; the upper die core is fixed to the lower die core through a boss, and forms a complete die with the lower die core; the positioning sleeve is sleeved on the outside of the upper die core; the upper die preload ring is sleeved on the outside of the positioning sleeve and is fixed by a plurality of bolts I; the curved pressure head is sleeved in the curved pressure head sleeve; the punch fixing seat is sleeved on the outside of the curved pressure head sleeve; the guide column is sleeved on the outside of the curved pressure head, and is positioned by the positioning pin and fixed to the punch fixing seat by the bolt II.

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