CN207188717U

CN207188717U - A kind of constructional device for improving internal spline part cold-forging forming precision

Info

Publication number: CN207188717U
Application number: CN201720689690.5U
Authority: CN
Inventors: 张卫; 朱华; 袁海兵; 姚杨华; 王维
Original assignee: JIANGSU SUNWAY PRECISION FORGING CO Ltd
Current assignee: JIANGSU SUNWAY PRECISION FORGING CO Ltd
Priority date: 2017-06-14
Filing date: 2017-06-14
Publication date: 2018-04-06
Anticipated expiration: 2027-06-14

Abstract

The utility model discloses a kind of constructional device for improving internal spline part cold-forging forming precision, including spline drift group outer ring, spline drift group inner ring, spline drift group is domestic and spline drift, spline drift is located in spline drift group inner ring, the first radial hole is offered on spline drift, the second radial hole is offered on spline drift group inner ring, spline drift group is domestic to sequentially pass through the first radial hole and the second radial hole, spline drift and spline drift group inner ring pass through pin connection in spline drift group, spline drift, it is reloaded into after the completion of spline drift group inner ring and the domestic assembling of spline drift group in spline drift group outer ring, spline drift is realized with spline drift group outer ring by spline to be coordinated.After improving mechanism, linear cutter (slow silk processing) can be used to substitute existing electrical discharge machining for spline drift, while the inner spline groove of the inner spline groove of spline drift group outer ring and spline drift group inner ring can also pass through linear cutter.And spline drift and the position degree of relative drift group is also greatly improved.

Description

A kind of constructional device for improving internal spline part cold-forging forming precision

Technical field

The utility model is related to metal-pressed machine technical field, it is more specific design one kind can improve internal spline part cold forging into The constructional device of shape precision.

Background technology

Domestic existing internal spline part cold-forge forming drift group generally comprises drift set, spline drift and pressure block.Wherein Spline drift afterbody has a big step to do gap cooperation with drift set, and it typically by flat key or cuts with respect to the position degree of drift group While to realize.The shape issue (carrying big step) of original spline drift is limited in, its processing mode typically only has electric spark, but Electrical discharge machining brings the problem of mould and die accuracy is low, so as to have impact on the precision of workpiece.In addition, flat key or trimming can not all be protected Demonstrate,prove the position degree of spline.

Utility model content

The utility model provides that a kind of dimensional accuracy when solving internal spline key cold-forge forming is low and position degree is bad The constructional device for improving internal spline part cold-forging forming precision of problem.

According to one side of the present utility model, there is provided a kind of structure dress for improving internal spline part cold-forging forming precision Put, including spline drift group outer ring, spline drift group inner ring, spline drift group be domestic and spline drift,

The spline drift is located in the spline drift group inner ring, and first is offered on the spline drift radially Hole, the second radial hole is offered on the spline drift group inner ring, the spline drift group is domestic to sequentially pass through first footpath Second radial hole described in Xiang Konghe, the spline drift and the spline drift group inner ring pass through the domestic company of spline drift group Connect, the flower is reloaded into after the completion of the spline drift, the spline drift group inner ring and the domestic assembling of spline drift group In key drift group outer ring, the spline drift is realized with the spline drift group outer ring by spline to be coordinated.After improving mechanism, flower Linear cutter (slow silk processing) can be used to substitute existing electrical discharge machining, while the interior flower of spline drift group outer ring for key drift The inner spline groove of keyway and spline drift group inner ring can also pass through linear cutter.And spline drift is also greatly improved With the position degree of relative drift group.

In some embodiments, the spline drift is made up of linear cutter, the spline drift group inner ring and The inner spline groove of the spline drift group outer ring is made of by linear cutter.Structure of the present utility model causes spline to rush Usable linear cutter is made, and improves the internal spline precision of spline drift, meanwhile, by made of linear cutter The precision that spline drift group inner ring closes the outer ring of spline drift is also improved.

In some embodiments, be additionally provided with pressure block in the spline drift group outer ring, the bottom of the pressure block with Fitted at the top of the spline drift, the bottom of the pressure block with being fitted at the top of the spline drift group inner ring, when When the lower end of the spline drift is by thrust, its upper surface props up the pressure block, and the spline drift group is domestic does not stress, When the lower end of the spline drift is by pulling force, the spline drift group domestic fixation spline drift.

Brief description of the drawings

Fig. 1 is a kind of constructional device for improving internal spline part cold-forging forming precision of the embodiment of the utility model one Structural representation.

Embodiment

What Fig. 1 schematically showed a kind of embodiment of the present utility model improves internal spline part cold-forging forming precision Constructional device.As shown in figure 1, the constructional device that can improve internal spline part cold-forging forming precision includes spline drift group outer ring 1st, spline drift group inner ring 2, spline drift group domestic 3 and spline drift 4.

Spline drift 4 is located in spline drift group inner ring 2.The first radial hole, spline drift are offered on spline drift 4 The second radial hole is offered on group inner ring 2.Spline drift group domestic 3 sequentially passes through the first radial hole and the second radial hole, spline Drift 4 and spline drift group inner ring 2 pass through domestic 3 connection of spline drift group.Spline drift 4, spline drift group inner ring 2 and spline It is reloaded into after the completion of domestic 3 assembling of drift group in spline drift group outer ring 1.Spline drift 4 passes through flower with spline drift group outer ring 1 Key, which is realized, to be coordinated.Pressure block 5 is additionally provided with spline drift group outer ring 1, the bottom and the top of spline drift 4 of pressure block 5 are affixed Close, the bottom and the top of spline drift group inner ring 2 of pressure block 5 fit, when the lower end of spline drift 4 is by thrust, thereon End face props up pressure block 5, and spline drift group domestic 3 does not stress, when the lower end of spline drift 4 is by pulling force, spline drift group Domestic 3 fix spline drift 4.Assembling process of the present utility model is to assemble spline drift 4 in spline drift group inner ring 2, It is fixedly connected by spline drift group domestic 3, by the spline drift 4 assembled, spline drift group inner ring 2 and spline drift group Pin 3 is from top to bottom fitted into the cavity of the outer ring of spline drift 4 again after the completion of assembling, then pressure block 5 is fitted into spline drift In the cavity of group outer ring 1 so that the bottom of pressure block 5 and the top of spline drift 4 fit, the bottom of pressure block 5 and spline The top of drift group inner ring 2 fits.After improving mechanism, spline drift 4 can be used linear cutter (slow silk processing) substitution existing Some electrical discharge machinings, while the inner spline groove of the inner spline groove of spline drift group outer ring 1 and spline drift group inner ring 2 also may be used Pass through linear cutter.And spline drift 4 and the position degree of relative drift group is also greatly improved.Spline drift 4 passes through Linear cutter is made, and the inner spline groove of spline drift group inner ring 2 and spline drift group outer ring 1 is to pass through linear cutter It is made.Structure of the present utility model causes spline drift 4 linear cutter to can be used to be made, and improves the interior flower of spline drift 4 Key precision, meanwhile, also obtained by the precision of the outer ring of spline drift group inner ring 2 and spline drift 4 made of linear cutter Improve.

Above-described is only some embodiments of the present utility model.For those of ordinary skill in the art, exist On the premise of not departing from the utility model creation design, various modifications and improvements can be made, it is new that these belong to this practicality The protection domain of type.

Claims

A kind of 1. constructional device for improving internal spline part cold-forging forming precision, it is characterised in that including spline drift group outer ring, Spline drift group inner ring, spline drift group be domestic and spline drift,

The spline drift is located in the spline drift group inner ring, and the first radial hole, institute are offered on the spline drift State and the second radial hole offered on spline drift group inner ring, the spline drift group is domestic sequentially pass through first radial hole and Second radial hole, the spline drift and the spline drift group inner ring pass through pin connection in the spline drift group, institute State and be reloaded into the spline drift after the completion of spline drift, the spline drift group inner ring and the domestic assembling of spline drift group In group outer ring, the spline drift is realized with the spline drift group outer ring by spline to be coordinated.
2. the constructional device according to claim 1 for improving internal spline part cold-forging forming precision, it is characterised in that described Spline drift is made up of linear cutter, and the inner spline groove of the outer ring of the spline drift group inner ring and the spline drift is equal It is made of by linear cutter.
3. the constructional device according to claim 1 for improving internal spline part cold-forging forming precision, it is characterised in that described Pressure block is additionally provided with spline drift group outer ring, the bottom of the pressure block is described with being fitted at the top of the spline drift The bottom of pressure block at the top of the spline drift group inner ring with fitting, when the lower end of the spline drift is by thrust, its Upper surface props up the pressure block, and the spline drift group is domestic does not stress, when the lower end of the spline drift is by pulling force, The spline drift group domestic fixation spline drift.