CN108213883A - A kind of production technology for the pinion gear for producing car belt - Google Patents

A kind of production technology for the pinion gear for producing car belt Download PDF

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Publication number
CN108213883A
CN108213883A CN201711478509.7A CN201711478509A CN108213883A CN 108213883 A CN108213883 A CN 108213883A CN 201711478509 A CN201711478509 A CN 201711478509A CN 108213883 A CN108213883 A CN 108213883A
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CN
China
Prior art keywords
cushion block
mandril
main mould
punch die
formwork
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.)
Pending
Application number
CN201711478509.7A
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Chinese (zh)
Inventor
本杰明
刘志鑫
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ANTE METAL FORMING (SHANGHAI) Co Ltd
Original Assignee
ANTE METAL FORMING (SHANGHAI) Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ANTE METAL FORMING (SHANGHAI) Co Ltd filed Critical ANTE METAL FORMING (SHANGHAI) Co Ltd
Priority to CN201711478509.7A priority Critical patent/CN108213883A/en
Publication of CN108213883A publication Critical patent/CN108213883A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D37/00Tools as parts of machines covered by this subclass
    • B21D37/08Dies with different parts for several steps in a process
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23PMETAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • B23P15/14Making specific metal objects by operations not covered by a single other subclass or a group in this subclass gear parts, e.g. gear wheels

Abstract

The present invention provides a kind of production technology for the pinion gear for producing car belt, sheared successively in horizontal punching machine equipment successively using wire rod, shaping, jumping-up, preforming, punching and Compound Extrusion process, product size and tolerance are finally reached, the horizontal punching machine includes the first station, second station, 3rd station, the 4th station, the 5th station, the 6th station.By optimizing Pinion shape of product, it has well solved part material and has filled non-uniform shortcoming in radial directions, so that material is easier to flow, reduce cold-forge forming power, the drawbacks of successfully solving the inefficiency and complex process of vertical punching machine production, and preferably improve die life.

Description

A kind of production technology for the pinion gear for producing car belt
Technical field
The present invention relates to a kind of production technologies of pinion gear.
Background technology
With the sustainable development of auto industry, people's living standards continue to improve, in order to it is more convenient, quickly go out Row, automobile have become the main walking-replacing tool of people.But the rapid proliferation of automobile forces people that must not be not concerned with the peace of automobile Entirely, a series of problems, such as energy-saving and environmental protection, and automotive safety problem is even more to stand in the breach, due to automotive safety problem direct relation To the life security of people, this allows many people to automobile using there are certain misgivings so that people are to vehicle safety performance It is it is required that higher and higher.The main safeguard measure of automobile has safety belt, Anti-collision vehicle body and air bag guard system etc., vapour at present Vehicle safety belt is the passive security configuration of traditional guarantee safe driving, is pre- when fierce collision occurs during running Tight device belt pull, can limit the position of driver or occupant, avoid personnel and interior steering wheel, windshield, The objects such as backrest, car door collide, and the extendability of safety belt can absorb the energy generated in collision process Amount, power limiter can make safety belt slightly relax to mitigate the pressure to passenger, so as to reduce accident to driving people The extent of injury of member.At the same time with the use of upper, safety belt can help occupant to correct faulty sitting posture, and ensure with air bag When accident occurs, air bag can play maximum effect.
Pinion (pinion gear) is used as one of part of most critical in car belt and its system, works as car belt During into row buffering, pinion gear rotation is needed to give cushion effect and finally hold safety belt, therefore its importance has some idea of.But Since it needs to realize a series of functions, the shape of pinion gear complexity is directly determined.Traditional Pinion (pinion gear) is in reality Actual production is not combined too much on the basis of existing function, with respect to complex forming technology, height is required to production equipment, causes to give birth to Produce that less efficient, cost is higher.Plank is first is carried out bar stock cutting by punching by the flow of production Pinion in vertical punching machine at present, then Then phospholeum is processed on vertical three stations cold forging punching machine, the part of forging and stamping then is carried out vibration cleaning, finally will The identical pinion gear of two processing carries out re-plating after welding fabrication.
Invention content
In view of the foregoing deficiencies of prior art, present invention aims at provide a kind of to produce the small of car belt The production technology of gear, improves work efficiency, and reduces part production cost.
In order to achieve the above objects and other related objects, the present invention provides a kind of pinion gear for producing car belt Production technology, sheared successively in horizontal punching machine equipment successively using wire rod, shaping, jumping-up, preforming, punching and compound Extrusion process, is finally reached product size and tolerance, and the horizontal punching machine includes the first station, second station, third work Position, the 4th station, the 5th station, the 6th station.
The defects of section is uneven when the shaping that wherein second station carries out is to eliminate shearing, is arrived for 3rd station jumping-up Prepare close to product maximum gauge, preforming the 4th station is prepared for punching, it is preforming go out bottom outlet, rationally determine punching When tear-strap position, by six continual punch dies and debugging, finally successfully produce needed for shape pinion gear.
Preferably, a diameter of 16-18mm of used wire rod, a diameter of 38-40mm of finally formed pinion gear.
Preferably, the product horizontal six stations punching machine produced carries out vibration, then carries out the pinion gear after vibration The pinion gear being welded, is finally electroplated, obtains final finished product by welding.
Preferably, first station includes moving cutting tool, moving cutting tool insert, fixed cutting tool, fixed cutting tool insert, institute It is corresponding with the fixed cutting tool position to state moving cutting tool, the fixed cutting tool is located in the fixed cutting tool insert, the work Dynamic cutter is located in the moving cutting tool insert.
Preferably, the second station includes punch die formwork, main mould formwork, punch die cushion block, main mould cushion block, the punch die mould It is equipped in shell and rushes stick, the upper end of the punch die cushion block is equipped with mandril, and main mould mandril, the main mould top are equipped in the main mould formwork Bar is located in the main mould cushion block, and the lower section of the main mould mandril is equipped with mandril cushion block, and the lower section of the mandril cushion block is equipped with top Rod, the lower section of the knock-pin are equipped with ejection cushion block.
Preferably, the 3rd station includes punch die formwork, main mould formwork, punch die cushion block, main mould cushion block, the punch die mould It is equipped in shell and rushes stick, the upper end of the punch die cushion block is equipped with mandril, and main mould mandril, the main mould top are equipped in the main mould formwork Bar is located in the main mould cushion block, and the lower section of the main mould mandril is equipped with mandril cushion block, and the lower section of the mandril cushion block is equipped with top Rod, the lower section of the knock-pin are equipped with ejection cushion block.
Preferably, the 4th station includes punch die formwork, main mould formwork, punch die cushion block, main mould cushion block, the punch die mould It is equipped in shell and rushes stick, the upper end of the punch die cushion block is equipped with mandril, and main mould mandril, the main mould top are equipped in the main mould formwork Bar is located in the main mould cushion block, and the lower section of the main mould mandril is equipped with mandril cushion block, and the lower section of the mandril cushion block is equipped with top Rod, the lower section of the knock-pin are equipped with ejection cushion block, and the ejection cushion block is equipped with knock pin, is set below the knock pin There is discharging seat, the discharging seat is externally provided with discharging set.
Preferably, the 5th station includes punch die formwork, main mould formwork, punch die cushion block, main mould cushion block, the punch die mould It is equipped in shell and rushes stick, the punch die cushion block rushes stick upper end positioned at described, and the upper end of the punch die cushion block is equipped with mandril, the punch die The lower section of cushion block is equipped with knock pin, and the lower section of the knock pin is equipped with discharging seat, and the discharging seat is externally provided with discharging set, the master Main mould cavity plate is equipped in mould formwork, the main mould cavity plate is externally provided with main mould insert, and the main mould cavity plate is externally provided with cavity plate fixed block With main mould cushion block, the lower section of the cavity plate fixed block is equipped with angled slide block.
Preferably, the 6th station includes punch die formwork, main mould formwork, punch die cushion block, main mould cushion block, the punch die mould It is equipped in shell and rushes stick, the punch die cushion block rushes stick upper end positioned at described, and the upper end of the punch die cushion block is equipped with mandril, the punch die The lower section of cushion block is equipped with knock pin, and the lower section of the ejection cushion block is equipped with positioning key and punch die fixed block, in the main mould formwork Equipped with mandril, the lower end of the mandril is equipped with mandril cushion block.
Preferably, it is described rush stick and be externally provided with rush stick ring, positioning pin is equipped between the mandril and the mandril cushion block, it is described Mandril fixed block is equipped between mandril and the mandril cushion block.
As described above, a kind of production technology of pinion gear for producing car belt provided by the invention, this technique exist It does not influence to optimize traditional Pinion as far as possible on the basis of its function, finally successfully turns product from vertical punching machine It moves on on horizontal punching machine and produces, eliminate the intermediate processs such as embryo and phospholeum processed, greatly improve work efficiency, reduce part Production cost.For the Pinion shape of product after optimization, by sunykatuib analysis, we will produce on vertical punching machine originally Pinion products redefine production technology, and mold is designed on horizontal punching machine, by six times it is continual change mould and debugging simultaneously Reverse optimization shape of product finally successfully gets exemplar, completes volume production.By optimizing Pinion shape of product, solve well Part material of having determined fills non-uniform shortcoming in radial directions so that and material is easier to flow, and reduces cold-forge forming power, The drawbacks of successfully solving the inefficiency and complex process of vertical punching machine production, and preferably improve die life.
Description of the drawings
Fig. 1 is the first station in horizontal six stations punching machine.
Fig. 2 is the second station in horizontal six stations punching machine.
Fig. 3 is the 3rd station in horizontal six stations punching machine.
Fig. 4 is the 4th station in horizontal six stations punching machine.
Fig. 5 is the 5th station in horizontal six stations punching machine.
Fig. 6 is the 6th station in horizontal six stations punching machine.
001-moving cutting tool, 001A-moving cutting tool insert, 002-fixed cutting tool, 002A-fixed cutting tool insert, 101-punch die formwork, 102-rush stick, 103-rush stick cushion block, 106-punch die cushion block, 107-mandril, 151-main mould formwork, 152-main mould mandril, 154-main mould cushion block, 155-mandril cushion block, 158-knock-pin, 159-ejection cushion block, 120-ejection Pin, 121-discharging seat, 122-discharging set, 123-main mould insert, 124-main mould cavity plate, 125-cavity plate fixed block, 126- Cavity plate fixed block, 127-blanking block, 128-angled slide block, 129-ejection ring, 130-positioning key, 131-punch die fixed block, 132-rush stick ring, 133-mandril fixed block, 134-positioning pin, 120-knock pin.
Specific embodiment
Embodiments of the present invention are illustrated by particular specific embodiment below, those skilled in the art can be by this explanation Content disclosed by book understands other advantages and effect of the present invention easily.
It please refers to Fig.1 to Fig. 6.It should be clear that structure, ratio, size depicted in this specification institute accompanying drawings etc., only to Coordinate the revealed content of specification, so that those skilled in the art understands and reads, being not limited to the present invention can be real The qualifications applied, therefore do not have technical essential meaning, the tune of the modification of any structure, the change of proportionate relationship or size It is whole, in the case where not influencing the effect of present invention can be generated and the purpose that can reach, should all still fall in disclosed skill Art content is obtained in the range of covering.Meanwhile in this specification it is cited as " on ", " under ", "left", "right", " centre " and The term of " one " etc. is merely convenient to understanding rather than to limit the enforceable range of the present invention for narration, relativeness It is altered or modified, in the case where changing technology contents without essence, when being also considered as the enforceable scope of the present invention.
As shown in Figures 1 to 6, the present invention provides a kind of production technology for the pinion gear for producing car belt, uses Wire rod is sheared successively in horizontal punching machine equipment successively, shaping, jumping-up, preforming, punching and Compound Extrusion process, finally Reach product size and tolerance, the horizontal punching machine includes the first station, second station, 3rd station, the 4th station, the The defects of section is uneven when the shaping that five stations, the 6th station, wherein second station carry out is to eliminate shearing is third work Position jumping-up prepare to close to product maximum gauge, preforming the 4th station is prepared for punching, it is preforming go out bottom outlet, rationally It determines the position of tear-strap during punching, by six continual punch dies and debugging, finally successfully produces the small of required shape Gear.
In the present embodiment, a diameter of 16-18mm of used wire rod, a diameter of 38- of finally formed pinion gear 40mm。
In the present embodiment, the product horizontal six stations punching machine produced carries out vibration, then by the small tooth after vibration Wheel is welded, and finally the pinion gear being welded is electroplated, obtains final finished product.
In the present embodiment, first station includes moving cutting tool 001, moving cutting tool insert 001A, fixed cutting tool 002nd, fixed cutting tool insert 002A, the moving cutting tool 001 is corresponding with 002 position of fixed cutting tool, the fixed cutting tool 002 is located in the fixed cutting tool insert 002A, and the moving cutting tool 001 is located in the moving cutting tool insert 001A.
In the present embodiment, the second station includes punch die formwork 101, main mould formwork 151, punch die cushion block 106, main mould Cushion block 154, interior be equipped with of the punch die formwork 101 rush stick 102, and the upper end of the punch die cushion block 106 is equipped with mandril 107, the master Main mould mandril 152 is equipped in mould formwork 151, the main mould mandril 152 is located in the main mould cushion block 154, the main mould mandril 152 lower section is equipped with mandril cushion block 155, and the lower section of the mandril cushion block 155 is equipped with knock-pin 158, under the knock-pin 158 Side is equipped with ejection cushion block 159.
In the present embodiment, the 3rd station includes punch die formwork 101, main mould formwork 151, punch die cushion block 106, main mould Cushion block 154, interior be equipped with of the punch die formwork 101 rush stick 102, and the upper end of the punch die cushion block 106 is equipped with mandril 107, the master Main mould mandril 152 is equipped in mould formwork 151, the main mould mandril 152 is located in the main mould cushion block 154, the main mould mandril 152 lower section is equipped with mandril cushion block 155, and the lower section of the mandril cushion block 155 is equipped with knock-pin 158, under the knock-pin 158 Side is equipped with ejection cushion block 159.
In the present embodiment, the 4th station includes punch die formwork 101, main mould formwork 151, punch die cushion block 106, main mould Cushion block 154, interior be equipped with of the punch die formwork 101 rush stick 102, and the upper end of the punch die cushion block 106 is equipped with mandril 107, the master Main mould mandril 152 is equipped in mould formwork 151, the main mould mandril 152 is located in the main mould cushion block 154, the main mould mandril 152 lower section is equipped with mandril cushion block 155, and the lower section of the mandril cushion block 155 is equipped with knock-pin 158, under the knock-pin 158 Side is equipped with ejection cushion block 159, and the ejection cushion block 159 is equipped with knock pin 120, and the lower section of the knock pin 120 is equipped with discharging Seat 121, the discharging seat 121 are externally provided with discharging set 122.
In the present embodiment, the 5th station includes punch die formwork 101, main mould formwork 151, punch die cushion block 106, main mould Cushion block 154 is equipped in the punch die formwork 101 and rushes stick 102, the punch die cushion block 106 be located at it is described rush 102 upper end of stick, it is described The upper end of punch die cushion block 106 is equipped with mandril 107, and the lower section of the punch die cushion block 106 is equipped with knock pin 120, the knock pin 120 Lower section be equipped with discharging seat 121, the discharging seat 121 is externally provided with discharging set 122, and it is recessed that main mould is equipped in the main mould formwork 151 Mould 124, the main mould cavity plate 124 are externally provided with main mould insert 123, and the main mould cavity plate 124 is externally provided with cavity plate fixed block 126 and master Die-cushion block 106, the lower section of the cavity plate fixed block 126 are equipped with angled slide block 128.
In the present embodiment, the 6th station includes punch die formwork 101, main mould formwork 151, punch die cushion block 106, main mould Cushion block 154 is equipped in the punch die formwork 101 and rushes stick 102, the punch die cushion block 103 be located at it is described rush 102 upper end of stick, it is described The upper end of punch die cushion block 106 is equipped with mandril 107, and the lower section of the punch die cushion block 106 is equipped with knock pin 120, the ejection cushion block 159 lower section is equipped with positioning key 130 and punch die fixed block 131, and mandril 107, the mandril are equipped in the main mould formwork 151 107 lower end is equipped with mandril cushion block 155.
In the present embodiment, it is described rush stick 102 and be externally provided with rush stick ring 132, the mandril 107 and the mandril cushion block 155 Between be equipped with positioning pin 134, between the mandril 107 and the mandril cushion block 155 be equipped with mandril fixed block 133.
Former Pinion products ball and material at ball assembly connection are more, and less by the ball installation place material of proximal end face, While realization using function, fully consider these factors, the end face of pinion gear is only changed to waveform, allow corrugated At trough face ball and ball assembly connection, so that evenly, material is easier to flow material part, required in the radial direction Cold forging power smaller, it is easier to be produced on this horizontal six station, while ensureing for six station die service life, obtained preferable Product Precision and quality.
For the Pinion shape of product after optimization, by sunykatuib analysis, by what is produced on vertical punching machine originally Pinion products redefine production technology, and mold is designed on horizontal punching machine, by six times it is continual change mould and debugging simultaneously Reverse optimization shape of product finally successfully gets exemplar, completes volume production.
In conclusion the present invention provides a kind of production technology for the pinion gear for producing car belt, after optimization Pinion shape of product, by sunykatuib analysis, we redefine the Pinion products produced on vertical punching machine originally Production technology designs mold on horizontal punching machine, by six times it is continual change mould and debugging and Reverse optimization shape of product, most Exemplar is successfully got eventually, completes volume production.By optimizing Pinion shape of product, part material radial direction has been well solved Upper non-uniform shortcoming so that material is easier to flow, and reduces cold-forge forming power, successfully solves vertical punching machine production The drawbacks of inefficiency and complex process, and preferably improve die life.So the present invention effectively overcomes the prior art In various shortcoming and have high industrial utilization.
The above-described embodiments merely illustrate the principles and effects of the present invention, and is not intended to limit the present invention.It is any ripe The personage for knowing this technology all can carry out modifications and changes under the spirit and scope without prejudice to the present invention to above-described embodiment.Cause This, those of ordinary skill in the art is complete without departing from disclosed spirit and institute under technological thought such as Into all equivalent modifications or change, should by the present invention claim be covered.

Claims (10)

1. a kind of production technology for the pinion gear for producing car belt, it is characterised in that:Using wire rod successively in horizontal punching Sheared successively on bed apparatus, shaping, jumping-up, preforming, punching and Compound Extrusion process, be finally reached product size and public affairs Difference requirement, the horizontal punching machine include the first station, second station, 3rd station, the 4th station, the 5th station, the 6th station.
2. a kind of production technology of pinion gear for producing car belt according to claim 1, it is characterised in that:Institute A diameter of 16-18mm of the wire rod of use, a diameter of 38-40mm of finally formed pinion gear.
3. a kind of production technology of pinion gear for producing car belt according to claim 1, it is characterised in that:It will The product that horizontal six stations punching machine is produced carries out vibration, then welds the pinion gear after vibration, will finally be welded Pinion gear be electroplated, obtain final finished product.
4. a kind of production technology of pinion gear for producing car belt according to claim 1, it is characterised in that:Institute State the first station include moving cutting tool, moving cutting tool insert, fixed cutting tool, fixed cutting tool insert, the moving cutting tool with it is described Fixed cutting tool position is corresponding, and the fixed cutting tool is located in the fixed cutting tool insert, and the moving cutting tool is located at the work In dynamic cutting knife insert.
5. a kind of production technology of pinion gear for producing car belt according to claim 1, it is characterised in that:Institute It states second station and includes punch die formwork, main mould formwork, punch die cushion block, main mould cushion block, be equipped in the punch die formwork and rush stick, it is described The upper end of punch die cushion block is equipped with mandril, is equipped with main mould mandril in the main mould formwork, the main mould mandril is located at the main mould pad In block, the lower section of the main mould mandril is equipped with mandril cushion block, and the lower section of the mandril cushion block is equipped with knock-pin, the knock-pin Lower section is equipped with ejection cushion block.
6. a kind of production technology of pinion gear for producing car belt according to claim 1, it is characterised in that:Institute It states 3rd station and includes punch die formwork, main mould formwork, punch die cushion block, main mould cushion block, be equipped in the punch die formwork and rush stick, it is described The upper end of punch die cushion block is equipped with mandril, is equipped with main mould mandril in the main mould formwork, the main mould mandril is located at the main mould pad In block, the lower section of the main mould mandril is equipped with mandril cushion block, and the lower section of the mandril cushion block is equipped with knock-pin, the knock-pin Lower section is equipped with ejection cushion block.
7. a kind of production technology of pinion gear for producing car belt according to claim 1, it is characterised in that:Institute It states the 4th station and includes punch die formwork, main mould formwork, punch die cushion block, main mould cushion block, be equipped in the punch die formwork and rush stick, it is described The upper end of punch die cushion block is equipped with mandril, is equipped with main mould mandril in the main mould formwork, the main mould mandril is located at the main mould pad In block, the lower section of the main mould mandril is equipped with mandril cushion block, and the lower section of the mandril cushion block is equipped with knock-pin, the knock-pin Lower section is equipped with ejection cushion block, and the ejection cushion block is equipped with knock pin, and the lower section of the knock pin is equipped with discharging seat, the discharging Seat is externally provided with discharging set.
8. a kind of production technology of pinion gear for producing car belt according to claim 1, it is characterised in that:Institute It states the 5th station and includes punch die formwork, main mould formwork, punch die cushion block, main mould cushion block, be equipped in the punch die formwork and rush stick, it is described Punch die cushion block rushes stick upper end positioned at described, and the upper end of the punch die cushion block is equipped with mandril, and the lower section of the punch die cushion block is equipped with top Go out pin, the lower section of the knock pin is equipped with discharging seat, and the discharging seat is externally provided with discharging set, main mould is equipped in the main mould formwork Cavity plate, the main mould cavity plate are externally provided with main mould insert, and the main mould cavity plate is externally provided with cavity plate fixed block and main mould cushion block, described recessed The lower section of mould fixed block is equipped with angled slide block.
9. a kind of production technology of pinion gear for producing car belt according to claim 1, it is characterised in that:Institute It states the 6th station and includes punch die formwork, main mould formwork, punch die cushion block, main mould cushion block, be equipped in the punch die formwork and rush stick, it is described Punch die cushion block rushes stick upper end positioned at described, and the upper end of the punch die cushion block is equipped with mandril, and the lower section of the punch die cushion block is equipped with top Go out pin, the lower section of the ejection cushion block is equipped with positioning key and punch die fixed block, mandril, the mandril are equipped in the main mould formwork Lower end be equipped with mandril cushion block.
10. a kind of production of pinion gear for producing car belt according to any one claims of claim 7-9 Technique, it is characterised in that:It is described rush stick and be externally provided with rush stick ring, positioning pin, institute are equipped between the mandril and the mandril cushion block It states and mandril fixed block is equipped between mandril and the mandril cushion block.
CN201711478509.7A 2017-12-29 2017-12-29 A kind of production technology for the pinion gear for producing car belt Pending CN108213883A (en)

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CN201711478509.7A CN108213883A (en) 2017-12-29 2017-12-29 A kind of production technology for the pinion gear for producing car belt

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Application Number Priority Date Filing Date Title
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104493061A (en) * 2014-12-01 2015-04-08 苏州工业园区新凯精密五金有限公司 Cold-forging technology for safety belt transmission shaft and die structure of molded transmission patterned tooth
CN105251923A (en) * 2015-11-12 2016-01-20 苏州工业园区新凯精密五金有限公司 Cold heading forming process for transmission gear and heavy extruding die structure for forming middle teeth
CN105290300A (en) * 2015-11-12 2016-02-03 苏州工业园区新凯精密五金有限公司 Cold heading process of chassis eccentric nut and mold structure for forming special-shaped hole
CN205128835U (en) * 2015-11-12 2016-04-06 苏州工业园区新凯精密五金有限公司 Mould structure of chassis eccentric nut shaping irregularly -shaped hole
CN206474627U (en) * 2016-12-28 2017-09-08 宾科汽车紧固件(昆山)有限公司 The cold-heading device of special-shaped torque arm

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104493061A (en) * 2014-12-01 2015-04-08 苏州工业园区新凯精密五金有限公司 Cold-forging technology for safety belt transmission shaft and die structure of molded transmission patterned tooth
CN105251923A (en) * 2015-11-12 2016-01-20 苏州工业园区新凯精密五金有限公司 Cold heading forming process for transmission gear and heavy extruding die structure for forming middle teeth
CN105290300A (en) * 2015-11-12 2016-02-03 苏州工业园区新凯精密五金有限公司 Cold heading process of chassis eccentric nut and mold structure for forming special-shaped hole
CN205128835U (en) * 2015-11-12 2016-04-06 苏州工业园区新凯精密五金有限公司 Mould structure of chassis eccentric nut shaping irregularly -shaped hole
CN206474627U (en) * 2016-12-28 2017-09-08 宾科汽车紧固件(昆山)有限公司 The cold-heading device of special-shaped torque arm

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