CN106180503A - The cold-heading molding technique of a kind of self-clinching nut and the mould structure of forming embossing tooth thereof - Google Patents

The cold-heading molding technique of a kind of self-clinching nut and the mould structure of forming embossing tooth thereof Download PDF

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Publication number
CN106180503A
CN106180503A CN201610737660.7A CN201610737660A CN106180503A CN 106180503 A CN106180503 A CN 106180503A CN 201610737660 A CN201610737660 A CN 201610737660A CN 106180503 A CN106180503 A CN 106180503A
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CN
China
Prior art keywords
main mould
cushion block
punch die
mould
main
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
CN201610737660.7A
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Chinese (zh)
Inventor
王宁
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.)
SUZHOU INDUSTRIAL PARK XINKAI PRECISION FASTENER Co Ltd
Original Assignee
SUZHOU INDUSTRIAL PARK XINKAI PRECISION FASTENER 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
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Application filed by SUZHOU INDUSTRIAL PARK XINKAI PRECISION FASTENER Co Ltd filed Critical SUZHOU INDUSTRIAL PARK XINKAI PRECISION FASTENER Co Ltd
Priority to CN201610737660.7A priority Critical patent/CN106180503A/en
Publication of CN106180503A publication Critical patent/CN106180503A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21JFORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J13/00Details of machines for forging, pressing, or hammering
    • B21J13/02Dies or mountings therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21JFORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/002Hybrid process, e.g. forging following casting
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21JFORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/06Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
    • B21J5/08Upsetting
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21KMAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00Making machine elements
    • B21K1/64Making machine elements nuts
    • B21K1/70Making machine elements nuts of special shape, e.g. self-locking nuts, wing nuts
    • B21K1/702Clinch nuts

Abstract

The present invention relates to cold-heading molding technique and the mould structure of forming embossing tooth of a kind of self-clinching nut, the step of described cold-heading molding technique is: S1, shearing wire rod;S2, shaping;S3, bundle bar contoured bottom blind hole;S4, stretching top blind hole;S5, the thick head in upsetting pressure top;S6, forming embossing tooth;S7, rush through hole.Mould structure is, including main form unit and punch die unit, punch die unit includes punch die shell, punch die thimble, main form unit includes main formwork, die, is provided with main mould thimble bottom the forming cavity of die, is provided with main mould tailstock barrel outside main mould thimble, main mould the first cushion block, the second cushion block, the 3rd cushion block it is provided with below die, main mould thimble passes in the middle part of main mould tailstock barrel, is provided with main mould push rod in main mould the 3rd cushion block, and main mould push rod offsets bottom main mould tailstock barrel through main mould the second cushion block.Cold-heading technology is utilized to complete all sizes, it is ensured that self-clinching nut dense internal organization also presents complete streamline trend.

Description

The cold-heading molding technique of a kind of self-clinching nut and the mould structure of forming embossing tooth thereof
Technical field
The present invention relates to cold-heading molding technology industry, especially relate to cold-heading molding technique and the one-tenth thereof of a kind of self-clinching nut The mould structure of type flower tooth.
Background technology
At present, in automobile manufacture industry, the self-clinching nut in automobile brake system is also vitals, to it Add and require its quality man-hour, can't meet the quality requirement and will affect the security performance of whole automobilism, and existing for adding The technique of work self-clinching nut, it is common that after forging out by mould, is processed molding, this processing mode by CNC For removing materials processing, it destroys the streamline trend of self-clinching nut interior tissue, it will affect its intensity and mechanical property, Thus reduce service life and the scope of product, CNC machining is inefficient, and the production cycle is longer, and die life is relatively low, All make the product export after machine-shaping relatively costly.
Summary of the invention
The technical problem to be solved be to provide that a kind of interiors of products streamline trend is complete and conservation with And the cold-heading molding technique of the self-clinching nut of time and the mould structure of forming embossing tooth thereof..
The present invention solves its technical problem and is adopted the technical scheme that: the cold-heading molding technique of a kind of self-clinching nut, institute The step of the cold-heading molding technique stated is:
S1, shearing wire rod;
S2, to shear after wire rod carry out shaping;
S3, bundle bar contoured bottom blind hole;
S4, stretching top blind hole also carry out shaping to bottom blind hole;
S5, the thick head of upsetting pressure shaped crown also carry out shaping to top blind hole and bottom blind hole;
S6, dresser nut flower tooth also carries out shaping to top blind hole, the thick head of bottom blind hole and top;
S7, by punching press, top blind hole is connected with bottom blind hole;
Wire rod in described step S1 is through processing hardening.
The most concrete, the colored tooth at least three of molding and being positioned on thick caster bed rank, top uniformly in described step S6 Distribution.
The most concrete, the colored tooth of described molding is six.
In a kind of step S6, the mould structure of molding self-clinching nut flower tooth, including main form unit and punch die unit, described Punch die unit includes punch die shell and is positioned at the punch die thimble within punch die shell, and described main form unit includes main formwork and position In the die within main formwork, described die is provided with forming cavity, bottom the forming cavity of described die, is provided with main mould top Pin, is provided with main mould tailstock barrel outside described main mould thimble, is provided with main mould the first cushion block, described below described die The lower section of main mould the first cushion block be provided with main mould the second cushion block, the lower section of described main mould the second cushion block is provided with main mould the 3rd pad Block, is provided with a cavity inside described main mould the first cushion block, and described main mould tailstock barrel is insert molded bottom chamber through cavity, Described main mould thimble is fixed in main mould the second cushion block, and described main mould thimble passes in the middle part of main mould tailstock barrel and is inserted into into Cavity bottom, is provided with main mould push rod in described main mould the 3rd cushion block, described main mould push rod passes main mould the second cushion block and master Offset bottom mould tailstock barrel promotion main mould tailstock barrel motion.
The most concrete, it is provided with between described main mould push rod and main mould tailstock barrel and ejects cushion block, described main mould top Pin is through ejecting cushion block.
The most concrete, described punch die thimble is fixed in punch die the first cushion block, overlaps on described punch die thimble There is punch die tailstock barrel, be provided with punch die the second cushion block at described punch die the first cushion block rear, set in described punch die the second cushion block Having punch die push rod, described punch die push rod passes the promotion punch die tailstock barrel fortune that offsets bottom punch die the first cushion block and punch die tailstock barrel Dynamic.
The most concrete, described punch die the second cushion block rear is provided with ring-type cushion block, inside described ring-type cushion block Being provided with punch die jacking block, described punch die jacking block and punch die push rod offset and promote the motion of punch die push rod.
The most concrete, the rear of described main mould the 3rd cushion block is provided with main mould the 4th cushion block, described main mould the 4th Cushion block and main mould push rod offset and promote the motion of main mould push rod.
The invention has the beneficial effects as follows: after have employed above-mentioned technique and mould, utilize cold-heading technology to complete self-clinching nut All sizes, including the most difficulty multistage hole and flower tooth, it is possible to ensure self-clinching nut interior tissue finer and close and in The most complete streamline trend, pore, pine contracting and crackle tiny during cold-heading, by pressing, improve mechanical property, do not adopt Process with CNC, save material, it is ensured that streamline is complete, improve efficiency, reduce production cost.
Accompanying drawing explanation
Fig. 1 is present invention process shaping schematic view;
Fig. 2 is the mould structure schematic diagram of shaping of the present invention;
Fig. 3 is the mould structure schematic diagram of contoured bottom blind hole of the present invention;
Fig. 4 is the mould structure schematic diagram that the present invention stretches top blind hole;
Fig. 5 is the mould structure schematic diagram of the thick head in upsetting pressure top of the present invention;
Fig. 6 is the mould structure schematic diagram of dresser nut of the present invention flower tooth;
Fig. 7 is the mould structure schematic diagram that the present invention rushes through hole.
1,3, punch die unit in figure:;2,4, main form unit;11,31, punch die shell;12, punch die cushion block;13,32, punching Mould thimble;21,41, main formwork;22, main mould epimere;23, main mould hypomere;24,43, main mould thimble;33, punch die first pads Block;34, punch die tailstock barrel;35, punch die the second cushion block;36, punch die push rod;37, annular cushion block;38, punch die jacking block; 42, die;44, main mould tailstock barrel;45, main mould the first cushion block;46, main mould the second cushion block;47, main mould the 3rd cushion block; 48, cavity;49, main mould push rod;410, cushion block is ejected;411, main mould the 4th cushion block.
Detailed description of the invention
Below in conjunction with the accompanying drawings the present invention is explained in detail.
A kind of cold-heading molding technique of self-clinching nut, the step of described cold-heading molding technique is:
S1, shearing wire rod, need its processing hardening before shearing wire rod;
S2, to shear after wire rod carry out shaping, prepare for next step;
S3, bundle bar contoured bottom blind hole, diminish the diameter of wire rod and bottom blind hole carried out thick molding;
S4, stretching top blind hole also carry out shaping to bottom blind hole, in stretching top, wire rod top blind hole, carry out bottom blind hole Micro-shaping ensures that it is indeformable;
S5, the thick head of upsetting pressure shaped crown also carry out shaping to top blind hole and bottom blind hole;
S6, dresser nut flower tooth also carries out shaping to top blind hole, the thick head of bottom blind hole and top, and flower tooth is the most at least Three and be positioned on thick caster bed rank, top and be uniformly distributed, actual production flower tooth is six;
S7, by punching press, top blind hole is connected with bottom blind hole, form multistage through hole.
The mould structure of molding self-clinching nut flower tooth in a kind of step S6, including main form unit 4 and punch die list Unit 3, described punch die unit 3 includes punch die shell 31 and is positioned at the punch die thimble 32 within punch die shell 31, described main mould list Unit 4 includes main formwork 41 and is positioned at the die 42 within main formwork 41, is provided with forming cavity on described die 42, described It is provided with main mould thimble 43 bottom the forming cavity of die 42, outside described main mould thimble 43, is provided with main mould tailstock barrel 44, in institute It is provided with main mould the first cushion block 45 below the die 42 stated, is provided with main mould the second cushion block in the lower section of described main mould the first cushion block 45 46, the lower section of described main mould the second cushion block 46 is provided with main mould the 3rd cushion block 47, sets inside described main mould the first cushion block 45 Having a cavity 48, described main mould tailstock barrel 44 is insert molded bottom chamber through cavity 48, and described main mould thimble 43 is fixed on In main mould the second cushion block 46, described main mould thimble 43 passes in the middle part of main mould tailstock barrel 44 and is inserted into bottom forming cavity, described Main mould the 3rd cushion block 47 in be provided with main mould push rod 49, described main mould push rod 49 is through main mould the second cushion block 46 and main mould thimble The main mould tailstock barrel 44 of promotion that offsets bottom set 44 moves;It is provided with ejector pad between described main mould push rod 49 and main mould tailstock barrel 44 Block 410, described main mould thimble 43 is through ejecting cushion block 410;Described punch die thimble 32 is fixed in punch die the first cushion block 33, Described punch die thimble 32 is cased with punch die tailstock barrel 34, is provided with punch die second at described punch die the first cushion block 33 rear and pads Block 35, is provided with punch die push rod 36 in described punch die the second cushion block 35, described punch die push rod 36 is through punch die the first cushion block 33 Promotion punch die tailstock barrel 34 moves with offseting bottom punch die tailstock barrel 34;Described punch die the second cushion block 35 rear is provided with loop pads Block 37, is provided with punch die jacking block 38 inside described ring-type cushion block 37, and described punch die jacking block 38 pushes with punch die push rod 36 phase Dynamic punch die push rod 36 moves;The rear of described main mould the 3rd cushion block 47 is provided with main mould the 4th cushion block 411, described main mould the 4th Cushion block 411 and main mould push rod 49 offset and promote main mould push rod 49 to move.
Each station is divided into main form unit 2 and punch die unit 1, main form unit 2 mainly to have main mould as shown in Figure 2 to 7 Shell 21, main mould epimere 22, main mould hypomere 23 and main mould thimble 24 form, and punch die unit 1 mainly has punch die shell 11, punch die cushion block 12 and punch die thimble 13 form.Wherein crossing mould to be completed by clip, all of mould is all arranged on cold headers.As shown in Figure 2 The mass motion in the course of the work of punch die unit and punch die thimble push workpiece and enter in master cast chamber;Main form unit is fixed on machine On device, main mould thimble and main mould push rod, in motion, play the effect releasing workpiece.Punch die unit is in work process as shown in Figure 3 Middle mass motion and punch die thimble push workpiece and enter in master cast chamber;Main form unit is fixed on the machine, and main mould thimble plays The effect of shaping workpiece, main mould tailstock barrel and main mould push rod play the effect releasing workpiece.Rush as shown in Figure 4, Figure 5 and Figure 6 Form unit mass motion in the course of the work, punch die thimble plays the effect of shaped crown blind hole, punching with the combination of punch die tailstock barrel Mould push rod and punch die tailstock barrel play the effect releasing workpiece;Main form unit is fixed on the machine, and main mould thimble plays molding The effect of workpiece, main mould tailstock barrel and main mould push rod play the effect releasing workpiece.Punch die unit is worked as shown in Figure 7 In journey, mass motion and punch die thimble play the purpose of punching;Blanking port is had on main form unit, unnecessary for punching is got off Material is collected.
It is emphasized that: be the most only presently preferred embodiments of the present invention, not the present invention is made any in form Restriction, any simple modification, equivalent variations and the modification that above example is made by every technical spirit according to the present invention, All still fall within the range of technical solution of the present invention.

Claims (8)

1. the cold-heading molding technique of a self-clinching nut, it is characterised in that the step of described cold-heading molding technique is:
S1, shearing wire rod;
S2, to shear after wire rod carry out shaping;
S3, bundle bar contoured bottom blind hole;
S4, stretching top blind hole also carry out shaping to bottom blind hole;
S5, the thick head of upsetting pressure shaped crown also carry out shaping to top blind hole and bottom blind hole;
S6, dresser nut flower tooth also carries out shaping to top blind hole, the thick head of bottom blind hole and top;
S7, by punching press, top blind hole is connected with bottom blind hole;
Wire rod in described step S1 is through processing hardening.
The cold-heading molding technique of self-clinching nut the most according to claim 1, it is characterised in that molding in described step S6 Colored tooth at least three and being positioned on thick caster bed rank, top be uniformly distributed.
The cold-heading molding technique of self-clinching nut the most according to claim 2, it is characterised in that the colored tooth of described molding is Six.
4. a mould structure for molding self-clinching nut flower tooth in step S6, including main form unit (4) and punch die unit (3), institute The punch die unit (3) stated includes punch die shell (31) and is positioned at the punch die thimble (32) that punch die shell (31) is internal, described main mould Unit (4) includes main formwork (41) and is positioned at the die (42) that main formwork (41) is internal, is provided with on described die (42) Forming cavity, it is characterised in that be provided with main mould thimble (43) bottom the forming cavity of described die (42), at described main mould thimble (43) outside is provided with main mould tailstock barrel (44), is provided with main mould the first cushion block (45), described in described die (42) lower section The lower section of main mould the first cushion block (45) is provided with main mould the second cushion block (46), and the lower section of described main mould the second cushion block (46) is provided with master Mould the 3rd cushion block (47), is provided with a cavity (48), described main mould tailstock barrel in described main mould the first cushion block (45) inside (44) being insert molded bottom chamber through cavity (48), described main mould thimble (43) is fixed in main mould the second cushion block (46), institute The main mould thimble (43) stated passes from main mould tailstock barrel (44) middle part and is inserted into bottom forming cavity, described main mould the 3rd cushion block (47) being provided with main mould push rod (49) in, described main mould push rod (49) is through main mould the second cushion block (46) and main mould tailstock barrel (44) Bottom offsets and promotes the motion of main mould tailstock barrel.
The mould structure of molding self-clinching nut the most according to claim 4 flower tooth, it is characterised in that described main mould push rod (49) and being provided with between main mould tailstock barrel (44) and eject cushion block (410), described main mould thimble (43) is through ejecting cushion block (410).
The mould structure of molding self-clinching nut the most according to claim 4 flower tooth, it is characterised in that described punch die thimble (32) it is fixed in punch die the first cushion block (33), described punch die thimble (32) is cased with punch die tailstock barrel (34), described Punch die the first cushion block (33) rear be provided with punch die the second cushion block (35), be provided with punch die top in described punch die the second cushion block (35) Bar (36), described punch die push rod (36) passes the promotion punch die that offsets bottom punch die the first cushion block (33) and punch die tailstock barrel (34) Tailstock barrel (34) moves.
The mould structure of molding self-clinching nut the most according to claim 6 flower tooth, it is characterised in that described punch die second Cushion block (35) rear is provided with ring-type cushion block (37), is provided with punch die jacking block (38) in described ring-type cushion block (37) inside, described Punch die jacking block (38) and punch die push rod (36) offset and promote punch die push rod (36) motion.
The mould structure of molding self-clinching nut the most according to claim 4 flower tooth, it is characterised in that described main mould the 3rd The rear of cushion block (47) is provided with main mould the 4th cushion block (411), and described main mould the 4th cushion block (411) offsets with main mould push rod (49) Main mould push rod (49) is promoted to move.
CN201610737660.7A 2016-08-29 2016-08-29 The cold-heading molding technique of a kind of self-clinching nut and the mould structure of forming embossing tooth thereof Pending CN106180503A (en)

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CN201610737660.7A CN106180503A (en) 2016-08-29 2016-08-29 The cold-heading molding technique of a kind of self-clinching nut and the mould structure of forming embossing tooth thereof

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Application Number Priority Date Filing Date Title
CN201610737660.7A CN106180503A (en) 2016-08-29 2016-08-29 The cold-heading molding technique of a kind of self-clinching nut and the mould structure of forming embossing tooth thereof

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108311855A (en) * 2018-03-08 2018-07-24 深圳市佰瑞兴实业有限公司 A kind of manufacturing method of colored tooth riveting screw
CN108422155A (en) * 2018-02-26 2018-08-21 乐清市强特紧固件制造有限公司 A kind of processing technology being exclusively used in hollow nut
CN108971412A (en) * 2018-07-16 2018-12-11 靖江市恒丰铆钉制造有限公司 A kind of rivet cold heading technique
CN109794571A (en) * 2019-02-13 2019-05-24 苏州誉高紧固系统有限公司 A kind of cold extrusion stretching production technology of T-type sleeve
CN110116184A (en) * 2019-04-30 2019-08-13 山东九佳紧固件股份有限公司 Self-clinching nut spends laugh somebody to scorn upsetting forming processing mold and its processing technology
CN110180988A (en) * 2019-06-13 2019-08-30 广州市科镁隆五金有限公司 A kind of lantern type rivet nut production technology
CN110586845A (en) * 2019-08-29 2019-12-20 宁波安拓实业有限公司 Manufacturing method of large square nut for automobile chassis connecting system
CN112555265A (en) * 2020-10-28 2021-03-26 浙江自紧王机械有限公司 Press forming method for self-tightening nut and self-tightening gasket in rotary lifting mode

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108422155A (en) * 2018-02-26 2018-08-21 乐清市强特紧固件制造有限公司 A kind of processing technology being exclusively used in hollow nut
CN108311855A (en) * 2018-03-08 2018-07-24 深圳市佰瑞兴实业有限公司 A kind of manufacturing method of colored tooth riveting screw
CN108971412A (en) * 2018-07-16 2018-12-11 靖江市恒丰铆钉制造有限公司 A kind of rivet cold heading technique
CN109794571A (en) * 2019-02-13 2019-05-24 苏州誉高紧固系统有限公司 A kind of cold extrusion stretching production technology of T-type sleeve
CN110116184A (en) * 2019-04-30 2019-08-13 山东九佳紧固件股份有限公司 Self-clinching nut spends laugh somebody to scorn upsetting forming processing mold and its processing technology
CN110180988A (en) * 2019-06-13 2019-08-30 广州市科镁隆五金有限公司 A kind of lantern type rivet nut production technology
CN110586845A (en) * 2019-08-29 2019-12-20 宁波安拓实业有限公司 Manufacturing method of large square nut for automobile chassis connecting system
CN112555265A (en) * 2020-10-28 2021-03-26 浙江自紧王机械有限公司 Press forming method for self-tightening nut and self-tightening gasket in rotary lifting mode
CN112555265B (en) * 2020-10-28 2021-07-27 浙江自紧王机械有限公司 Press forming method for self-tightening nut and self-tightening gasket in rotary lifting mode

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