CN102921865A - Trimming die of free-tempering limiting pin and forming process of trimming die - Google Patents
Trimming die of free-tempering limiting pin and forming process of trimming die Download PDFInfo
- Publication number
- CN102921865A CN102921865A CN2012104481980A CN201210448198A CN102921865A CN 102921865 A CN102921865 A CN 102921865A CN 2012104481980 A CN2012104481980 A CN 2012104481980A CN 201210448198 A CN201210448198 A CN 201210448198A CN 102921865 A CN102921865 A CN 102921865A
- Authority
- CN
- China
- Prior art keywords
- die
- mold base
- spacer pin
- limiting pin
- chamfering
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Forging (AREA)
Abstract
The invention provides a trimming die of a free-tempering limiting pin and a forming process of the trimming die and belongs to the technical field of limiting pin machining. Problems that the existing limiting pin is high in machining cost, raw materials and tool dies are wasted in a machining process and the like are solved. The trimming die of the free-tempering limiting pin comprises a chamfering die and a trimming die body, the chamfering die is that a die core totally made of tungsten steel is arranged in a die seat, thimble sliding channels which are mutually communicated are arranged in the die core and the die seat, and thimbles for glidingly pushing a die blank out are arranged in the sliding channels. The trimming die body is that the die core totally made of tungsten steel, a spring and a punching pad are sequentially arranged in a sliding channel of a cavity of the die seat, a limiting pin forming groove is arranged on the die core, one end of a punching rod is connected with the punching pad, the other end of the punching rod extends into a die core forming groove, and the forming groove comprises a big diameter portion on the upper portion and a small diameter portion on the lower portion. The trimming die has the advantages of saving machining cost of the limiting pin, simultaneously reducing quality risk caused by tempering machining, improving quality of products and the like.
Description
Technical field
The invention belongs to the spacer pin processing technique field, refer in particular to a kind of punch die and moulding process thereof of exempting from modified spacer pin.
Background technology
At present, the spacer pin product that uses on the clutch driven disk for automobile has following requirement in riveted joint: the hardness requirement of spacer pin two ends is lower, can conveniently rivet; Spacer pin middle part hardness requirement is higher, can transmit enough moments of torsion that clutch plate rotates, and opens simultaneously the effect of stop.Based on above 2 requirements to spacer pin, existing a lot of spacer pin products have been derived: the diplopore spacer pin that needs high strength spacer pin, the two ends of modifier treatment (such as high-frequency quenching) to hole or to punch to process such as the middle part etc.These traditional spacer pin processing technologys are relatively single, have or even directly machined form, this improves constantly with regard to the processing cost that makes spacer pin, has also caused the waste of raw material and moulds of industrial equipment in the process.
Summary of the invention
The purpose of this invention is to provide a kind of cold upsetting die of car moulding that utilized, reduced material that original machined causes and the waste in man-hour, effectively controlled moulding process and the punch die thereof of each hardness of spacer pin.
The object of the present invention is achieved like this:
Exempt from the punch die of modified spacer pin, it is characterized in that: comprise chamfer mould and punch die;
Described chamfer mould is: be provided with full wolfram steel molding benevolence in the die holder, offer the thimble slideway that is connected in described die and the die holder, being provided with in the slideway slides ejects the thimble of mold base, identical with the internal diameter of thimble slideway in the die holder behind the lower end undergauge of described die slideway;
Described punch die is: be provided with successively full wolfram steel molding benevolence, spring and die head in the slideway of die holder inner chamber, described die is provided with the spacer pin forming tank, rushing an excellent end is connected with die head, the other end stretches in the die forming tank, described forming tank comprises the large-diameter portion on top and the minor diameter part of bottom, described large-diameter portion and minor diameter part respectively corresponding moulding spacer pin middle part and termination.
In the above-mentioned punch die of exempting from modified spacer pin, be equipped with relative step on the die holder inwall of described punch die and on the die outer wall.
In the above-mentioned punch die of exempting from modified spacer pin, the moulding process of modified spacer pin is exempted from described punch die moulding of exempting from modified spacer pin, may further comprise the steps:
(1) the cold pier chamfering of mold base: mold base is put into the extruding of described chamfer mould form chamfering, it is cylindric and can reduce the change of termination hardness in follow-up punching course that mold base is chamfering;
(2) mold base extrusion modling: the mold base that the cold pier of step (1) is gone out chamfering is put into the bulge at described punch die moulding middle part, makes the contraction in length of mold base, and diameter of section increases, and the hardness of bulge is higher than the two ends hardness of mold base.
The present invention compared to existing technology outstanding and useful technique effect is:
The present invention has utilized the spacer pin mold base is carried out chamfer machining, so that the cold-heading power that the termination of mold base is subject to is less, reduced and in extruding, caused the termination stiffness changing, constantly push by the middle part again, form the bulge of high rigidity, the present invention has reduced the quality risk that modified processing causes when having saved the spacer pin processing cost, improved the quality of product.
Description of drawings
Fig. 1 is the flow chart of one of moulding process of the present invention.
Fig. 2 is two flow process of moulding process of the present invention.
Fig. 3 is the structure cutaway view of chamfer mould among the present invention.
Fig. 4 is the structure cutaway view of punch die among the present invention.
The specific embodiment
The invention will be further described with specific embodiment below in conjunction with accompanying drawing, referring to Fig. 1-4:
The cold pier chamfering of mold base: the termination of mold base forms chamfering by chamfer mould extruding, and it is cylindric and can reduce the change of termination hardness in follow-up punching course that mold base is chamfering.
The mold base extrusion modling: the punch die processing middle part of passing through of mold base forms bulge, the contraction in length of while mold base, and diameter of section increases, and the hardness of bulge is higher than the two ends hardness of mold base.
As shown in figures 1 and 3, what adopt among the present invention is that two moulds four rush equipment and finish processing to spacer pin, the first mould is processing mold base termination chamfering, the second mould is to the mold base extrusion modling after the chamfering, wherein the second mould is identical with the processing method of the first mould, so material is subject to the less reaction force of mould, and the firmness change of material itself is little, only need the hardness of control material at HRB80max, can make the termination of spacer pin reach the requirement of riveting.
Shown in Fig. 2,3 and 4, what adopt among the present invention is that three moulds six rush equipment and finish processing, the mold base extrusion modling: the mold base that the cold pier of step is gone out chamfering is put into the bulge at described punch die moulding middle part, make the contraction in length of mold base, diameter of section increases, and the hardness of bulge is higher than the two ends hardness of mold base.This bulge is by continuous punching so that the moulding extruding force has progressively increased, finally reached this process implementation of effect that middle part hardness increases spacer pin riveting enhancing in two ends on clutch plate, and the intensity at middle part increases purpose.
Above-described embodiment is preferred embodiment of the present invention only, is not to limit according to this protection scope of the present invention, therefore: all equivalences of doing according to structure of the present invention, shape, principle change, and all should be covered by within protection scope of the present invention.
Claims (3)
1. exempt from the punch die of modified spacer pin, it is characterized in that: comprise chamfer mould and punch die;
Described chamfer mould (1) is: be provided with full wolfram steel molding benevolence (11) in the die holder (10), offer the thimble slideway (12) that is connected in described die and the die holder, being provided with in the slideway slides ejects the thimble (13) of mold base, identical with the internal diameter of thimble slideway in the die holder behind the undergauge of the lower end of described die slideway (14);
Described punch die (2) is: be provided with successively full wolfram steel molding benevolence (21), spring (22) and die head (23) in the slideway of die holder (20) inner chamber, described die is provided with spacer pin forming tank (24), punching rod (25) one ends are connected with die head, the other end stretches in the die forming tank (24), described forming tank comprises the large-diameter portion (26) on top and the minor diameter part (27) of bottom, described large-diameter portion and minor diameter part respectively corresponding moulding spacer pin middle part and termination.
2. with punch die of exempting from modified spacer pin claimed in claim 1, it is characterized in that: be equipped with relative step (28) on the die holder inwall of described punch die and on the die outer wall.
3. exempt from the moulding process of modified spacer pin with punch die moulding of exempting from modified spacer pin claimed in claim 1, may further comprise the steps:
(1) the cold pier chamfering of mold base: mold base is put into the extruding of described chamfer mould form chamfering, it is cylindric and can reduce the change of termination hardness in follow-up punching course that mold base is chamfering;
(2) mold base extrusion modling: the mold base that the cold pier of step (1) is gone out chamfering is put into the bulge at described punch die moulding middle part, makes the contraction in length of mold base, and diameter of section increases, and the hardness of bulge is higher than the two ends hardness of mold base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210448198.0A CN102921865B (en) | 2012-11-10 | 2012-11-10 | Exempt from punch die and the moulding process thereof of modified spacer pin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210448198.0A CN102921865B (en) | 2012-11-10 | 2012-11-10 | Exempt from punch die and the moulding process thereof of modified spacer pin |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102921865A true CN102921865A (en) | 2013-02-13 |
| CN102921865B CN102921865B (en) | 2015-10-28 |
Family
ID=47636870
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210448198.0A Active CN102921865B (en) | 2012-11-10 | 2012-11-10 | Exempt from punch die and the moulding process thereof of modified spacer pin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102921865B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104801934A (en) * | 2015-04-28 | 2015-07-29 | 东风（十堰）汽车管业有限公司 | Method for reducing hardness of upset head of high-pressure oil pipe for engine |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1775411A (en) * | 2005-12-09 | 2006-05-24 | 郑小元 | Cold extrusion production process of support pin of clutch driven disk for automobile |
| JP2009195971A (en) * | 2008-02-25 | 2009-09-03 | Asmo Co Ltd | Method for manufacturing shaft with step part, method for manufacturing armature shaft, and apparatus for forming shaft with step part |
| CN102581137A (en) * | 2012-03-13 | 2012-07-18 | 苏州新凌高强度紧固件有限公司 | Movable stamping die |
| CN202343832U (en) * | 2011-11-26 | 2012-07-25 | 汕头经济特区超艺螺丝工业有限公司 | Cold upsetting forming die for automobile seat positioning pin shaft |
| CN102601289A (en) * | 2012-03-21 | 2012-07-25 | 苏州新凌电炉有限公司 | Forming die for hexagon flange bolts with teeth |
| CN102601290A (en) * | 2012-03-27 | 2012-07-25 | 苏州新凌高强度紧固件有限公司 | Pre-tampering die for pan head torx self-tapping locking screw |
| CN102717011A (en) * | 2012-06-27 | 2012-10-10 | 太仓椿盟链传动有限公司 | Full-automatic chamfering device and chamfering method of pin roll |
-
2012
- 2012-11-10 CN CN201210448198.0A patent/CN102921865B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1775411A (en) * | 2005-12-09 | 2006-05-24 | 郑小元 | Cold extrusion production process of support pin of clutch driven disk for automobile |
| JP2009195971A (en) * | 2008-02-25 | 2009-09-03 | Asmo Co Ltd | Method for manufacturing shaft with step part, method for manufacturing armature shaft, and apparatus for forming shaft with step part |
| CN202343832U (en) * | 2011-11-26 | 2012-07-25 | 汕头经济特区超艺螺丝工业有限公司 | Cold upsetting forming die for automobile seat positioning pin shaft |
| CN102581137A (en) * | 2012-03-13 | 2012-07-18 | 苏州新凌高强度紧固件有限公司 | Movable stamping die |
| CN102601289A (en) * | 2012-03-21 | 2012-07-25 | 苏州新凌电炉有限公司 | Forming die for hexagon flange bolts with teeth |
| CN102601290A (en) * | 2012-03-27 | 2012-07-25 | 苏州新凌高强度紧固件有限公司 | Pre-tampering die for pan head torx self-tapping locking screw |
| CN102717011A (en) * | 2012-06-27 | 2012-10-10 | 太仓椿盟链传动有限公司 | Full-automatic chamfering device and chamfering method of pin roll |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104801934A (en) * | 2015-04-28 | 2015-07-29 | 东风（十堰）汽车管业有限公司 | Method for reducing hardness of upset head of high-pressure oil pipe for engine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102921865B (en) | 2015-10-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102672096B (en) | Precision die forging and shaping technical method for automobile steering knuckle rough type parts | |
| CN101376141B (en) | Press forming method of automobile hub and matched forming mold thereof | |
| CN103212600B (en) | Manufacture method of inner sleeve | |
| CN101947567B (en) | Processing technique of flat-head hexagon bolt for cold extrusion shaping cart | |
| CN101100027A (en) | Petroleum drilling rod joint extrusion forming technology method | |
| CN107443019B (en) | The cold duplex forging manufacturing process of temperature of deep hole input shaft | |
| CN109848361B (en) | Method for manufacturing T-shaped elliptical inner sleeve blank for automobile | |
| CN104209702A (en) | Cold-heading device for irregular nut and production technique of cold-heading device | |
| CN101780629B (en) | Production process of special shaped screw bolt | |
| CN104148574B (en) | The cam bit manufacture method of a kind of accurate cold forging forming | |
| CN105268756A (en) | Die for pre-forming inner holes of deep-hole shaft parts, method for forming inner holes and forming process of deep-hole shaft parts | |
| CN105057529A (en) | Extrusion forming method for hollow shaft forged piece with variable cross section | |
| CN105618665A (en) | Plastic forming method of draw-hole bolt | |
| CN103240359B (en) | Near-net forming method of high-strength internal hexagon bored bolt | |
| CN102284663A (en) | Precision forging process and die for flange | |
| CN102198455B (en) | Hot extrusion forming method of drive shaft blank and die used in same | |
| CN112719178B (en) | Method for manufacturing bearing pin for welding of vehicle | |
| CN102125944A (en) | Process for producing pneumatic joint core | |
| CN105921671A (en) | Backward extrusion forming method of stepped hollow shaft part and die | |
| CN105834238A (en) | Stopper ring molding and shaping mold and stopper ring production method | |
| CN101386035B (en) | Manufacturing technique of piston pin | |
| CN211071645U (en) | Cold heading forming die assembly for passenger car engine oil delivery pipe bolt | |
| CN102921865B (en) | Exempt from punch die and the moulding process thereof of modified spacer pin | |
| CN107363205B (en) | Forging forming die set of valve body forging piece of flange ball valve with handle | |
| CN102658304A (en) | Closed-extrusion and molding method of flange |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |