CN104525599A - Cold extrusion mold for output shafts and preparation method thereof - Google Patents

Cold extrusion mold for output shafts and preparation method thereof Download PDF

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Publication number
CN104525599A
CN104525599A CN201410787105.6A CN201410787105A CN104525599A CN 104525599 A CN104525599 A CN 104525599A CN 201410787105 A CN201410787105 A CN 201410787105A CN 104525599 A CN104525599 A CN 104525599A
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CN
China
Prior art keywords
counterdie
lower die
cavity
patrix
die
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Pending
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CN201410787105.6A
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Chinese (zh)
Inventor
张建国
黄卫忠
仲几奎
王明亮
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ZHEJIANG MINGJIANG AUTO PARTS Co Ltd
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ZHEJIANG MINGJIANG AUTO PARTS Co Ltd
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Priority to CN201410787105.6A priority Critical patent/CN104525599A/en
Publication of CN104525599A publication Critical patent/CN104525599A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a cold extrusion mold for output shafts. The mold is composed of an upper die and a lower die which are mutually matched, wherein the lower die comprises a lower die core and a lower die fixed sleeve, the center of the top of a main body of the lower die core is provided with a shaft head cavity with an upward opening, and the shaft head cavity is connected with a multistage ladder-like lower die cavity penetrating to the bottom of the main body; an inner ring of the lower die fixed sleeve is sleeved on the outer peripheral surface of the lower die core, and an outer ring of the lower die fixed sleeve is sleeved on the upper part of a lower die jacket; and a lower die base is sleeved on the lower part of the lower die jacket, the center of the lower die base is provided with a lower die knockout-pin cavity communicated with the lower die cavity, the bottom of the lower die base is contracted so as to form a cascade ring, and the cascade ring is nested into a lower die fixed seat. According to the scheme, the machining efficiency is high, the manufacturing cost of products is low, no cutting is generated, and no material loss is caused; and a forging die is abraded slowly, and the size precision of products is easily guaranteed.

Description

A kind of output shaft cold extrusion die and preparation method thereof
Technical field
The present invention relates to five metals parts to make, refer in particular to a kind of I001/1003063905 output shaft cold extrusion die and preparation method thereof.
Background technology
Traditional I001/1003063905 output shaft cold extrusion blank structure is simple, and cost is low, but in use insecure, uses also dumb, and concentricity, Product Precision are also arrived requirement.I001/1003063905 output shaft cold extrusion blank structure is special, structural requirement is higher, the manufacturing process of existing I001/1003063905 output shaft cold-extruded pressed compact is machining work center and produces, its existing technological process is: will cut material deliver to machining center carry out turning, milling instrument processing, finally carry out the packing of product.But machining equipment is expensive, and working (machining) efficiency is low, and concentricity does not ensure, and Product Precision is also arrived requirement, and simultaneously because adopting instrument to process, can produce more waste material, therefore its metal streamline is also destroyed, and product strength is low.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, provide that a kind of structure is simple, machining accuracy is high, the integrated cold extrusion die of the output shaft of long service life and preparation method thereof.
For achieving the above object, technical scheme provided by the present invention is: a kind of output shaft cold-stamped preparation method, and described preparation method includes following steps:
1), first special crude green body mould, crude green body bar mould, smart base bar mould, smart extrusion die, cold extrusion molding mould is prepared by design size, for subsequent use;
2), by shearing, raw material are cut into predetermined length workpiece;
3), the crude green body after shearing is put into the cylindrical workpiece that the forward extrusion of crude green body mould becomes predetermined length, to form bar portion and head;
4), put into the formation of crude green body bar mould pressure ram portion and reduce bar;
5), put into smart base bar mould to extrude formation further and reduce bar;
6), smart extrusion mould reverse squeeze bulb is put into, to form step away from the one end in bar portion on head, head preboarding coning shape;
7), figure begins to take shape shaping guiding step blind hole, and the forward extrusion of bar portion is formed reduces bar, and be formed in the die cavity of cold extrusion molding mould eventually, bar portion and the shaping of large homalocephalus one step put in place.
Complete the smart extrusion die of said method, described mould is made up of the upper die and lower die cooperatively interacted, described counterdie includes lower die model core, counterdie fixed cover, counterdie overcoat, counterdie base, wherein, lower die model core main body is 40mm by diameter, be highly the cylinder formation of 103.7mm, body top center is provided with the spindle nose chamber of upward opening, and spindle nose chamber is connected with the multistage stepped counterdie die cavity being through to bottom part body; The top die cavity diameter of counterdie die cavity is 16.6mm, is highly 16.3mm; Middle part die cavity diameter is 14.9mm, is highly 37.7mm; Bottom die cavity diameter is 11.7mm, is highly 33.5mm; Connected by arc rounding off between adjacent die cavity; Counterdie fixed cover inner ring sleeve is contained on lower die model core outer peripheral face, and counterdie fixed cover exterior ring cap is contained in counterdie overcoat top; Counterdie base sheath is contained in counterdie overcoat bottom, and its top is connected with bottom counterdie fixed cover, lower die model core; Counterdie base center is provided with the counterdie push rod chamber be communicated with counterdie die cavity, and counterdie push rod chamber is through the upper and lower two ends of counterdie base; Counterdie base bottom shrinks and forms cascade ring, and this cascade ring is sleeved in lower model fixing seat; Counterdie overcoat outer peripheral face is provided with lower holddown groove; Patrix includes patrix core, patrix overcoat, wherein, patrix core body is 40mm by diameter, it is highly the cylinder formation of 50mm, patrix core body center is provided with the upper model cavity matched with counterdie die cavity, and upper model cavity bottom is conical, and its conical cavity height is 20.9mm, conical cavity bottom maximum caliber is 28.9mm, and conical cavity top lowest calibre is 20.9mm; Patrix outer body is sleeved in the upper die cavity of patrix jacket bottom, patrix outer body is 190mm by height, and its outer peripheral face is lower large little stepped, and bottom ladder maximum gauge is 108mm, top step diameter is 90mm, and the outer peripheral face of top ladder is provided with the upper holddown groove of inclination; Patrix overcoat center is provided with the patrix push rod chamber be communicated with upper model cavity top.
This programme is by improving the process design method of mould, make the cold-heading one-shot forming of I001/1003063905 output shaft cold-extruded pressed compact, thus decrease the program of lathe, instrument processing, ensure that concentricity and precision, avoid and produce more waste material, save manpower, physics, financial resources etc.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present invention.
Fig. 2 is workpiece 100 schematic diagram of the present invention.
Fig. 3 is workpiece 101 schematic diagram of the present invention.
Fig. 4 is workpiece 102 schematic diagram of the present invention.
Fig. 5 is workpiece 103 schematic diagram of the present invention.
Fig. 6 is workpiece 104 schematic diagram of the present invention.
Fig. 7 is workpiece 105 schematic diagram of the present invention.
Detailed description of the invention
Below in conjunction with institute's drawings attached, the invention will be further described, preferred embodiment of the present invention is: see accompanying drawing 1, output shaft essence extrusion die described in the present embodiment is made up of the upper die and lower die cooperatively interacted, described counterdie includes lower die model core 1, counterdie fixed cover 2, counterdie overcoat 3, counterdie base 4, wherein, lower die model core 1 main body is 40mm by diameter, it is highly the cylinder formation of 103.7mm, body top center is provided with the spindle nose chamber 5 of upward opening, and spindle nose chamber 5 is connected with the multistage stepped counterdie die cavity 6 being through to bottom part body; The top die cavity diameter of counterdie die cavity 6 is 16.6mm, is highly 16.3mm; Middle part die cavity diameter is 14.9mm, is highly 37.7mm; Bottom die cavity diameter is 11.7mm, is highly 33.5mm; Connected by arc rounding off between adjacent die cavity; Counterdie fixed cover 2 inner ring sleeve is contained on lower die model core 1 outer peripheral face, and counterdie fixed cover 2 exterior ring cap is contained in counterdie overcoat 3 top; Counterdie base 4 is sleeved on counterdie overcoat 3 bottom, and its top is connected with bottom counterdie fixed cover 2, lower die model core 1; Counterdie base 4 center is provided with the counterdie push rod chamber 7 be communicated with counterdie die cavity 6, and counterdie push rod chamber 7 is through counterdie base about 4 two ends; Shrink bottom counterdie base 4 and form cascade ring, this cascade ring is sleeved in lower model fixing seat 8; Counterdie overcoat 3 outer peripheral face is provided with lower holddown groove 14; Patrix includes patrix core 9, patrix overcoat 10, wherein, patrix core 9 main body is 40mm by diameter, it is highly the cylinder formation of 50mm, place of patrix core 9 main center is provided with the upper model cavity 11 matched with counterdie die cavity 6, and upper model cavity 11 bottom is conical, and its conical cavity height is 20.9mm, conical cavity bottom maximum caliber is 28.9mm, and conical cavity top lowest calibre is 20.9mm; Patrix overcoat 10 main body is sleeved in the upper die cavity bottom patrix overcoat 10, patrix overcoat 10 main body is 190mm by height, its outer peripheral face is lower large little stepped, bottom ladder maximum gauge is 108mm, top step diameter is 90mm, and the outer peripheral face of top ladder is provided with the upper holddown groove 13 of inclination; Patrix overcoat 10 center is provided with the patrix push rod chamber 12 be communicated with upper model cavity 11 top.
To prepare I001/1003063905 output shaft, the method comprises the following steps:
Step S100, by shearing the cylindrical workpiece 100 raw material being cut into predetermined length, see accompanying drawing 2, the cylindrical workpiece 100 of predetermined length is cut in forward extrusion, and preferred workpiece 100 is cylinder 1, and length is preset as 85.9mm.
Step S101, becomes the cylindrical workpiece 101 of predetermined length by the forward extrusion of crude green body mould, see accompanying drawing 3, to form bar portion and head, the diameter in bar portion is less than the diameter of head.
Step S102, is formed through crude green body bar mould pressure ram portion and reduces bar, form workpiece 102, see accompanying drawing 4;
Step S103, extrudes formation further through smart base bar mould and reduces bar, forms workpiece 103, see accompanying drawing 5;
Step S102, through smart extrusion mould reverse squeeze bulb, to form step away from the one end in bar portion, head preboarding coning shape on head; Form workpiece 104, see accompanying drawing 6;
Step S103, begin to take shape shaping guiding step blind hole through cold extrusion molding mould, the forward extrusion of bar portion is formed reduces bar, and be finally formed in same die cavity, four pole portions and the shaping of large homalocephalus one step put in place, form workpiece 105, see accompanying drawing 7.
The mould of above-mentioned axle only needs to make difform lower die model core and lower die model core.
After production completes, also comprise outside factory transport, product inspection, outward appearance sorting, the process such as packaging and delivery.001/1003063905 output shaft cold-extruded pressed compact manufacture method of the present invention, the problem such as need expensive processing charges when can solve existing machinery Cutter Body Processing with Machining Center 001/1003063905 output shaft cold-extruded pressed compact and fatigue strength is low.It is high that this programme has working (machining) efficiency, and cost of goods manufactured is low, and produce without cutting, material is lossless; Slowly, product size precision is easy to ensure in forging mold wearing and tearing.
The embodiment of the above is only the preferred embodiment of the present invention, not limits practical range of the present invention with this, therefore the change that all shapes according to the present invention, principle are done, all should be encompassed in protection scope of the present invention.

Claims (2)

1. an output shaft cold-stamped preparation method, is characterized in that: described preparation method includes following steps:
1), first special crude green body mould, crude green body bar mould, smart base bar mould, smart extrusion die, cold extrusion molding mould is prepared by design size, for subsequent use;
2), by shearing, raw material are cut into predetermined length workpiece;
3), the crude green body after shearing is put into the cylindrical workpiece that the forward extrusion of crude green body mould becomes predetermined length, to form bar portion and head;
4), put into the formation of crude green body bar mould pressure ram portion and reduce bar;
5), put into smart base bar mould to extrude formation further and reduce bar;
6), smart extrusion mould reverse squeeze bulb is put into, to form step away from the one end in bar portion on head, head preboarding coning shape;
7), figure begins to take shape shaping guiding step blind hole, and the forward extrusion of bar portion is formed reduces bar, and be formed in the die cavity of cold extrusion molding mould eventually, bar portion and the shaping of large homalocephalus one step put in place.
2. one kind makes the smart extrusion die of output shaft, it is characterized in that: described mould is made up of the upper die and lower die cooperatively interacted, described counterdie includes lower die model core (1), counterdie fixed cover (2), counterdie overcoat (3), counterdie base (4), wherein, lower die model core (1) main body is 40mm by diameter, it is highly the cylinder formation of 103.7mm, body top center is provided with the spindle nose chamber (5) of upward opening, and spindle nose chamber (5) are connected with the multistage stepped counterdie die cavity (6) being through to bottom part body; The top die cavity diameter of counterdie die cavity (6) is 16.6mm, is highly 16.3mm; Middle part die cavity diameter is 14.9mm, is highly 37.7mm; Bottom die cavity diameter is 11.7mm, is highly 33.5mm; Connected by arc rounding off between adjacent die cavity; Counterdie fixed cover (2) inner ring sleeve is contained on lower die model core (1) outer peripheral face, and counterdie fixed cover (2) exterior ring cap is contained in counterdie overcoat (3) top; Counterdie base (4) is sleeved on counterdie overcoat (3) bottom, and its top is connected with counterdie fixed cover (2), lower die model core (1) bottom; Counterdie base (4) center is provided with the counterdie push rod chamber (7) be communicated with counterdie die cavity (6), and counterdie push rod chamber (7) is through counterdie base (4) two ends up and down; Counterdie base (4) bottom is shunk and is formed cascade ring, and this cascade ring is sleeved in lower model fixing seat (8); Counterdie overcoat (3) outer peripheral face is provided with lower holddown groove (14); Patrix includes patrix core (9), patrix overcoat (10), wherein, patrix core (9) main body is 40mm by diameter, it is highly the cylinder formation of 50mm, place of patrix core (9) main center is provided with the upper model cavity (11) matched with counterdie die cavity (6), and upper model cavity (11) bottom is conical, and its conical cavity height is 20.9mm, conical cavity bottom maximum caliber is 28.9mm, and conical cavity top lowest calibre is 20.9mm; Patrix overcoat (10) main body is sleeved in the upper die cavity of patrix overcoat (10) bottom, patrix overcoat (10) main body is 190mm by height, its outer peripheral face is lower large little stepped, bottom ladder maximum gauge is 108mm, top step diameter is 90mm, and the outer peripheral face of top ladder is provided with the upper holddown groove (13) of inclination; Patrix overcoat (10) center is provided with the patrix push rod chamber (12) be communicated with upper model cavity (11) top.
CN201410787105.6A 2014-12-17 2014-12-17 Cold extrusion mold for output shafts and preparation method thereof Pending CN104525599A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105290290A (en) * 2015-10-28 2016-02-03 浙江名将汽配有限公司 Manufacturing die and manufacturing method for output shaft
CN107671132A (en) * 2017-08-18 2018-02-09 江苏森威集团飞达股份有限公司 A kind of forming technology of speed torque-converters hub
CN109732032A (en) * 2019-01-22 2019-05-10 武汉重工铸锻有限责任公司 Marine low speed diesel engine connecting rod point end die-forging forming device and forming method
CN113399486A (en) * 2021-06-17 2021-09-17 西北工业大学 Multi-section cold extrusion strengthening device and use method thereof

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CN203155933U (en) * 2012-12-29 2013-08-28 宾科汽车紧固件(昆山)有限公司 Special-shaped double-end bolt cold heading device
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RU2191089C1 (en) * 2001-05-22 2002-10-20 Открытое акционерное общество "Автонормаль" Bolt head stamping method
CN101508004A (en) * 2009-03-20 2009-08-19 华中科技大学 Sedan gear-box axle piece cold finish-forging formation method and die
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US20140069161A1 (en) * 2012-09-07 2014-03-13 Takehiko MASUYAMA Method of manufacturing flange structure
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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105290290A (en) * 2015-10-28 2016-02-03 浙江名将汽配有限公司 Manufacturing die and manufacturing method for output shaft
CN107671132A (en) * 2017-08-18 2018-02-09 江苏森威集团飞达股份有限公司 A kind of forming technology of speed torque-converters hub
CN107671132B (en) * 2017-08-18 2019-04-05 江苏森威集团飞达股份有限公司 A kind of forming technology of speed torque-converters hub
CN109732032A (en) * 2019-01-22 2019-05-10 武汉重工铸锻有限责任公司 Marine low speed diesel engine connecting rod point end die-forging forming device and forming method
CN109732032B (en) * 2019-01-22 2024-04-19 武汉重工铸锻有限责任公司 Marine low-speed diesel engine connecting rod split end die forging forming device and forming method
CN113399486A (en) * 2021-06-17 2021-09-17 西北工业大学 Multi-section cold extrusion strengthening device and use method thereof
CN113399486B (en) * 2021-06-17 2022-04-22 西北工业大学 Multi-section cold extrusion strengthening device and use method thereof

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Application publication date: 20150422