CN101823203A - Method for processing V-shaped straight-hole single-groove stamping part belt pulley - Google Patents

Method for processing V-shaped straight-hole single-groove stamping part belt pulley Download PDF

Info

Publication number
CN101823203A
CN101823203A CN 201010136932 CN201010136932A CN101823203A CN 101823203 A CN101823203 A CN 101823203A CN 201010136932 CN201010136932 CN 201010136932 CN 201010136932 A CN201010136932 A CN 201010136932A CN 101823203 A CN101823203 A CN 101823203A
Authority
CN
China
Prior art keywords
belt pulley
monolithic
groove
left part
single left
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
Application number
CN 201010136932
Other languages
Chinese (zh)
Other versions
CN101823203B (en
Inventor
冯建荣
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to CN2010101369320A priority Critical patent/CN101823203B/en
Publication of CN101823203A publication Critical patent/CN101823203A/en
Application granted granted Critical
Publication of CN101823203B publication Critical patent/CN101823203B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Pulleys (AREA)

Abstract

The invention relates to a method for processing a V-shaped straight-hole single-groove stamping part belt pulley. The method is characterized by comprising the following steps of: firstly, stamping and blanking a single left piece and a single right piece, wherein the raw materials are cold-rolled sheets; secondly, stamping the single left piece and the single right piece to form a half V-shaped groove shape of the belt pulley, wherein the groove face of the belt groove is 17+/-0.5 degrees; thirdly, stamping welding points on the single right piece; fourthly, welding the single left piece and the single right piece together to form a combined piece; fifthly, welding the combined piece and a shaft sleeve together to form a blank belt pulley; sixthly, performing boring hole and central axis hole keyseating on the center part of the blank belt pulley; and finally, performing paint spraying treatment on the blank belt pulley to obtain the V-shaped straight-hole single-groove stamping part belt pulley. The V-shaped straight-hole single-groove stamping part belt pulley has the advantages of high strength, high precision, light weight, long service lift, low rotary inertia, low price and attractive appearance. The V-shaped straight-hole single-groove stamping part belt pulley is an ideal substitute product for a cast belt pulley and a steel belt pulley in the transmission systems of vehicle generators, domestic appliances, domestic machines and the like.

Description

A kind of processing method of V-type straight-hole single-groove stamping part belt pulley
Technical field
The present invention relates to a kind of processing method of novel V-type straight-hole single-groove stamping part belt pulley, promptly reach the combination of stamping parts monolithic between the stamping parts monolithic and form, belong to five metals and make the field with shaft room melting welding.
Background technology
At present, the belt pulley manufacturing mainly is based on ironcasting, also has part to adopt the steel part belt pulley in addition, as the rotary extrusion type spinning belt pulley etc.
The ironcasting belt pulley is influenced by casting quality to be prone to casting flaws such as pore, burning into sand and influences intensity and outward appearance; Ironcasting belt pulley fragility is big, easily produces breach in producing, install, transporting; Ironcasting belt pulley Heavy Weight, raw materials consumption is big, and the energy-conserving and environment-protective performance is poor.Rotary extrusion type spinning belt pulley operation equipment has high input, the production cost height, the sexual valence ratio.
Summary of the invention
The objective of the invention is to overcome above-mentioned weak point, thereby provide between a kind of stamping parts monolithic and V-type straight-hole single-groove stamping part belt pulley processing method that the combination of stamping parts monolithic and shaft room combine by melting welding, intensity height, precision height, in light weight, long service life, rotary inertia are little, low price, outward appearance are beautiful.
According to technical scheme provided by the invention, the processing method of V-type straight-hole single-groove stamping part belt pulley, adopt following processing step:
1, the single left part is blanking punched: the raw material selection flat cold-rolled sheet becomes the single left part with the flat cold-rolled sheet blanking;
2, single left part drawing: the single left part is struck out half V-shaped groove shape of belt pulley, promptly 17 ° ± 0.5 ° belt pulley groove face on the first road shaping dies; And then with the second road shaping dies, by the hydraulic press shaping, single left part axial runout≤0.08mm; Circular runout≤0.08mm;
3, single left part Vehicle Processing: with single left part centre bore and the protruding plane of single left part is control vehicle processing side, remove burr, and then be that control vehicle is processed to form the poor wide 5mm of being with single left part side and single left part cylindrical, groove depth is the long-pending groove of the molten iron of 0.3mm;
4, the right part of monolithic is blanking punched: the raw material selection flat cold-rolled sheet becomes the right part of monolithic with the flat cold-rolled sheet blanking;
5, the right part drawing of monolithic: the right part of monolithic is struck out half V-shaped groove shape of belt pulley, promptly 17 ° ± 0.5 ° belt pulley groove face on the first road shaping dies; And then with the second road shaping dies, by the hydraulic press shaping, the right part axial runout≤0.08mm of monolithic; Circular runout≤0.08mm;
6, punching press pad:
(1), a punching press: form between single left part and the monolithic right side part weld diameter in punching press on the right part of monolithic and be 2mm, highly be the uniform melting welding point of 0.5mm;
(2), secondary punching press: form the diameter that welds between right part of monolithic and the axle sleeve in punching press on the right part of monolithic and be 3mm, highly be the uniform melting welding point of 0.5mm;
7, welding: single left part and the right part of monolithic are welded into sub-assembly, and welding current is 500~600A; Welding back sub-assembly axial runout branch≤0.12mm; Circular runout branch≤0.12mm; Again sub-assembly and axle sleeve are welded into the blank belt pulley, welding current is 500~600A; Welding back blank belt pulley axial tension>10KN:
8, blank belt pulley finish turning processing: right part side of first finish turning monolithic and axle sleeve end face, remove burr, then bore hole is carried out at blank belt pulley center, the blank belt pulley axial runout≤0.15mm after finish turning processing; Circular runout≤0.15mm;
9, blank belt pulley central shaft hole keyway processing: the blank belt pulley is placed on the keyway processing of carrying out central shaft hole on the keyway puller system;
10, surface treatment: on the blank belt pulley, carry out being finished product after paint spraying is handled.
Compared with the prior art the present invention has the following advantages:
The invention provides the V-type straight-hole single-groove stamping part belt pulley that the combination of a kind of stamping parts monolithic and shaft room combine by melting welding, its intensity height, precision height, in light weight, long service life, rotary inertia are little, low price, outward appearance are beautiful; The V-type straight-hole single-groove stamping part belt pulley is foundry goods belt pulley and steel part belt pulley desirable substitute products in transmission systems such as automobile current generator, household electrical appliance, domestic appliance.
Description of drawings
Fig. 1 is a V-type straight-hole single-groove stamping part belt pulley single left part structural representation of the present invention.
Fig. 2 is the right part structural representation of V-type straight-hole single-groove stamping part belt pulley monolithic of the present invention.
Fig. 3 is a V-type straight-hole single-groove stamping part belt pulley blanking die structural representation of the present invention.
Fig. 4 is the V-type straight-hole single-groove stamping part belt pulley first road mould structure schematic diagram of the present invention.
Fig. 5 is the V-type straight-hole single-groove stamping part belt pulley second road mould structure schematic diagram of the present invention.
Fig. 6 is a V-type straight-hole single-groove stamping part belt pulley structural representation of the present invention.
The specific embodiment
Embodiment during following the present invention incites somebody to action in conjunction with the accompanying drawings is further described:
Embodiment one
The processing method of V-type straight-hole single-groove stamping part belt pulley of the present invention adopts following processing step: B80 type-external diameter is that the Type B V-shaped groove belt pulley of 80mm is welded by single left part 1, the right part 2 of monolithic and axle sleeve 3, sees Fig. 1, Fig. 2 and shown in Figure 6.
1, the single left part is blanking punched: single left part 1 raw material thickness is selected the 2.5mm flat cold-rolled sheet for use, and earlier the 2.5mm flat cold-rolled sheet being become external diameter with blanking die (see figure 3) blanking on the JC23-100 punch press is the left monolithic 1 of 86mm;
2, single left part drawing: as shown in Figure 4: single left part 1 is struck out half V-shaped groove shape that external diameter is the 80mm belt pulley, promptly 17 ° ± 0.5 ° belt pulley groove face on the first road shaping dies; And then with as shown in Figure 5 the second road shaping dies, reaching its standard, it axially and circular runout≤0.08mm by the shaping of YXN-32 hydraulic press;
3, single left part Vehicle Processing: as shown in Figure 1: with single left part 1 centre bore and single left part 1 protruding plane is control vehicle processing side, remove burr, be that control vehicle is processed to form the poor wide 5mm of being with single left part 1 side and single left part 1 cylindrical then, groove depth is the long-pending groove of the molten iron of 0.3mm, and prepares for the road, back processes finish turning;
4, the right part of monolithic is blanking punched: as shown in Figure 2: the right part 2 raw material thickness of monolithic are selected the 2.5mm flat cold-rolled sheet for use, earlier the 2.5mm flat cold-rolled sheet are become into the right part 2 of monolithic that external diameter is 86mm with the blanking die blanking on the JC23-100 punch press;
5, the right part drawing of monolithic: as shown in Figure 4: the right part 2 of monolithic is struck out half V-shaped groove shape that external diameter is the 80mm belt pulley, promptly 17 ° ± 0.5 ° belt pulley groove face on the first road shaping dies; And then with as shown in Figure 5 the second road shaping dies, reaching its standard, it axially and circular runout≤0.08mm by the shaping of YXN-32 hydraulic press;
6, punching press pad:
(1), a punching press: the diameter that forms welding between single left part 1 and the right part 2 of monolithic in punching press on the right part 2 of monolithic is that 2mm highly is 6 uniform melting welding points of 0.5mm;
(2), secondary punching press: the diameter that forms welding between right part 2 of monolithic and the axle sleeve 3 in punching press on the right part 2 of monolithic is that 3mm highly is 4 uniform melting welding points of 0.5mm;
7, welding: as shown in Figure 6, the right part 2 usefulness bonding machines of single left part 1 and monolithic are carried out moment be welded into sub-assembly, its belt pulley V-shaped groove angle is 34 °.Welding current is 600A; Welding back sub-assembly axial runout branch≤0.12mm; Circular runout branch≤0.12mm; As shown in Figure 5: again sub-assembly is carried out melting welding with axle sleeve 3 and become the blank belt pulley, welding current is 600A; Welding back blank belt pulley axial tension>10KN; Axle sleeve 3 adopts no Sew steel pipe, and its axle sleeve aperture is 16mm 10.
8, blank belt pulley finish turning processing: right part 2 sides of first finish turning monolithic and axle sleeve 3 end faces, remove burr, then to blank belt pulley central bore, the center-hole diameter after finish turning processing is: 17mm ten 0.05mm; Blank belt pulley axial runout≤0.15mm after finish turning processing; Circular runout≤0.15mm;
9, blank belt pulley central shaft hole keyway processing: the blank belt pulley is placed on the keyway puller system keyway that carries out central shaft hole by frock is processed into finished product; Width of keyway is processed as: 4mm 10
10, surface treatment: on the blank belt pulley, carry out paint spraying and be treated to finished product with evergreen board black anti-rust lacquer.
Blanking die (see figure 3) of the present invention is by mould bases 4, counterdie 5, outer stripper set bolt 6, outer discharging elastomer block 7, outer stripper 8, interior stripper 9, patrix 10, top mold frame 11, interior discharging elastomer block 12, interior stripper set bolt 13 and die shank 14 etc. are formed down.Following mould bases 4, counterdie 5, outer stripper 8 are connected with outer stripper set bolt 6, outer discharging elastomer block 7; Interior stripper 9, patrix 10, top mold frame 11 are connected with interior discharging elastomer block 12, interior stripper set bolt 13; On top mold frame 11, connect die shank 14.
The present invention's first road shaping dies (see figure 4) is by mould bases 15, counterdie 16, patrix 17, top mold frame 18 and die shank 19 etc. are formed down.Following mould bases 15 is connected with counterdie 16 usefulness bolts, and patrix 17 is connected with top mold frame 18 usefulness bolts, and die shank 19 is set on top mold frame 18.
The present invention's second road shaping dies (see figure 5) is by mould bases 20, counterdie 21, patrix 22, top mold frame 23 and die shank 24 etc. are formed down.Following mould bases 20 is connected with counterdie 21 usefulness bolts, and patrix 22 is connected with top mold frame 23 usefulness bolts, and die shank 24 is set on top mold frame 23.
Embodiment two
The processing method of V-type straight-hole single-groove stamping part belt pulley of the present invention adopts following processing step: A70 type-external diameter is that the A type V-shaped groove belt pulley of 70mm is welded by single left part 1, the right part 2 of monolithic and axle sleeve 3.
1, the single left part is blanking punched: single left part 1 raw material thickness is selected the 2.5mm flat cold-rolled sheet for use, and earlier the 2.5mm flat cold-rolled sheet being become external diameter with blanking die (shown in Figure 4) blanking on the JC23-100 punch press is the left monolithic material 1 of 74mm;
2, single left part drawing: as shown in Figure 4: single left part 1 is struck out half V-shaped groove shape that external diameter is the 70mm belt pulley, promptly 17 ° ± 0.5 ° belt pulley groove face on the first road shaping dies; And then with as shown in Figure 5 the second road shaping dies, reaching its standard, it axially and circular runout≤0.08mm by the shaping of YXN-32 hydraulic press;
3, single left part Vehicle Processing: as shown in Figure 1: with single left part 1 centre bore and single left part 1 protruding plane is control vehicle processing side, remove burr, be that control vehicle is processed to form the poor wide 5mm of being with single left part 1 side and single left part 1 cylindrical then, groove depth is the long-pending groove of the molten iron of 0.3mm, and prepares for the road, back processes finish turning;
4, the right part of monolithic is blanking punched: as shown in Figure 2: the right part 2 of monolithic is blanking punched: the right part 2 raw material thickness of monolithic are selected the 2.5mm flat cold-rolled sheet for use, earlier the 2.5mm flat cold-rolled sheet are become into the right part 2 of monolithic that external diameter is 74mm with the blanking die blanking on the JC23-100 punch press;
5, right part 2 drawings of monolithic: as shown in Figure 4: the right part 2 of monolithic is struck out half V-shaped groove shape that external diameter is the 70mm belt pulley, promptly 17 ° ± 0.5 ° belt pulley groove face on the first road shaping dies; And then with as shown in Figure 5 the second road shaping dies, reaching its standard, it axially and circular runout≤0.08mm by the shaping of YXN-32 hydraulic press;
6, punching press pad:
(1), a punching press: the diameter that forms welding between single left part 1 and the right part 2 of monolithic in punching press on the right part 2 of monolithic is that 2mm highly is 6 uniform melting welding points of 0.5mm;
7, welding: the right part 2 usefulness bonding machines of single left part 1 and monolithic are carried out moment be welded into sub-assembly, its belt pulley V-shaped groove angle is 34 °.Welding current is 500A; Welding back sub-assembly axial runout branch≤0.12mm; Circular runout branch≤0.12mm; Welding back blank belt pulley axial tension>10KN;
8, blank belt pulley finish turning processing: the right part of first finish turning monolithic 2 sides, remove burr, then to blank belt pulley central bore, the center-hole diameter after finish turning processing is: 15mm ten 0.05mm; Blank belt pulley axial runout≤0.15mm after finish turning processing; Circular runout≤0.15mm;
9, surface treatment: carry out paint spraying and be treated to finished product on the blank belt pulley, paint is selected evergreen board black anti-rust lacquer for use.

Claims (1)

1.V the processing method of type straight-hole single-groove stamping part belt pulley is characterized in that: adopt following procedure of processing:
(1), the single left part is blanking punched: the raw material selection flat cold-rolled sheet becomes the single left part with the flat cold-rolled sheet blanking;
(2), single left part drawing: the single left part is struck out half V-shaped groove shape of belt pulley, promptly 17 ° ± 0.5 ° belt pulley groove face on the first road shaping dies; And then with the second road shaping dies, by the hydraulic press shaping, single left part axial runout≤0.08mm; Circular runout≤0.08mm;
(3), single left part Vehicle Processing: with single left part centre bore and the protruding plane of single left part is control vehicle processing side, remove burr, and then be that control vehicle is processed to form the poor wide 5mm of being with single left part side and single left part cylindrical, groove depth is the long-pending groove of the molten iron of 0.3mm;
(4), the right part of monolithic is blanking punched: the raw material selection flat cold-rolled sheet becomes the right part of monolithic with the flat cold-rolled sheet blanking;
(5), the right part drawing of monolithic: the right part of monolithic is struck out half V-shaped groove shape of belt pulley, promptly 17 ° ± 0.5 ° belt pulley groove face on the first road shaping dies; And then with the second road shaping dies, by the hydraulic press shaping, the right part axial runout≤0.08mm of monolithic; Circular runout≤0.08mm;
(6), punching press pad:
(a), a punching press: form between single left part and the monolithic right side part weld diameter in punching press on the right part of monolithic and be 2mm, highly be the uniform melting welding point of 0.5mm;
(b), secondary punching press: form the diameter that welds between right part of monolithic and the axle sleeve in punching press on the right part of monolithic and be 3mm, highly be the uniform melting welding point of 0.5mm;
(7), welding: single left part and the right part of monolithic are welded into sub-assembly, and welding current is: 500~600A; Welding back sub-assembly axial runout branch≤0.12mm; Circular runout branch≤0.12mm; Again sub-assembly and axle sleeve are welded into the blank belt pulley, welding current is 500~600A; Welding back blank belt pulley axial tension>10KN;
(8), blank belt pulley finish turning processing: right part side of first finish turning monolithic and axle sleeve end face, remove burr, then bore hole is carried out at blank belt pulley center, the blank belt pulley axial runout≤0.15mm after finish turning processing; Circular runout≤0.15mm;
(9), blank belt pulley central shaft hole keyway processing: the blank belt pulley is placed on the keyway processing of carrying out central shaft hole on the keyway puller system;
(10), surface treatment: on the blank belt pulley, carry out being the V-type straight-hole single-groove stamping part belt pulley after paint spraying is handled.
CN2010101369320A 2010-03-30 2010-03-30 Method for processing V-shaped straight-hole single-groove stamping part belt pulley Expired - Fee Related CN101823203B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010101369320A CN101823203B (en) 2010-03-30 2010-03-30 Method for processing V-shaped straight-hole single-groove stamping part belt pulley

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010101369320A CN101823203B (en) 2010-03-30 2010-03-30 Method for processing V-shaped straight-hole single-groove stamping part belt pulley

Publications (2)

Publication Number Publication Date
CN101823203A true CN101823203A (en) 2010-09-08
CN101823203B CN101823203B (en) 2011-11-02

Family

ID=42687478

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2010101369320A Expired - Fee Related CN101823203B (en) 2010-03-30 2010-03-30 Method for processing V-shaped straight-hole single-groove stamping part belt pulley

Country Status (1)

Country Link
CN (1) CN101823203B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102886662A (en) * 2012-09-29 2013-01-23 汪金芳 Manufacturing process of assembled V-type belt wheel
CN103386594A (en) * 2013-08-05 2013-11-13 湖北欧福思汽车零部件有限公司 Automobile air-conditioning compressor belt wheel and production method thereof
CN104196982A (en) * 2014-08-21 2014-12-10 南通福乐达汽车配件有限公司 Belt wheel special for output end of small engine
CN105256391A (en) * 2015-11-10 2016-01-20 太仓市世博纺织配件有限公司 Preparing method of yarn guide

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2214843A (en) * 1988-02-09 1989-09-13 Alfred Heinrich Thun Process for making the outer ring body of a freewheel device for bicycles
CN2066534U (en) * 1990-01-31 1990-11-28 浙江省瑞安市丽岙东风交通配件厂 Speed adjusting pulley for roll needle type motorcycle
CN2441661Y (en) * 2000-08-31 2001-08-08 上海汽车锻造总厂钢圈制造厂 Steel wheel with integrated surface
JP2002065008A (en) * 2000-09-01 2002-03-05 Sukigara Noki Kk Groove-forming wheel
CN101239629A (en) * 2008-03-07 2008-08-13 陈忠明 Method for producing guiding wheel
CN101279411A (en) * 2007-04-02 2008-10-08 宁波吉祥塑胶有限公司 Method for processing combined stamping core wheel

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2214843A (en) * 1988-02-09 1989-09-13 Alfred Heinrich Thun Process for making the outer ring body of a freewheel device for bicycles
CN2066534U (en) * 1990-01-31 1990-11-28 浙江省瑞安市丽岙东风交通配件厂 Speed adjusting pulley for roll needle type motorcycle
CN2441661Y (en) * 2000-08-31 2001-08-08 上海汽车锻造总厂钢圈制造厂 Steel wheel with integrated surface
JP2002065008A (en) * 2000-09-01 2002-03-05 Sukigara Noki Kk Groove-forming wheel
CN101279411A (en) * 2007-04-02 2008-10-08 宁波吉祥塑胶有限公司 Method for processing combined stamping core wheel
CN101239629A (en) * 2008-03-07 2008-08-13 陈忠明 Method for producing guiding wheel

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102886662A (en) * 2012-09-29 2013-01-23 汪金芳 Manufacturing process of assembled V-type belt wheel
CN102886662B (en) * 2012-09-29 2014-11-12 汪金芳 Manufacturing process of assembled V-type belt wheel
CN103386594A (en) * 2013-08-05 2013-11-13 湖北欧福思汽车零部件有限公司 Automobile air-conditioning compressor belt wheel and production method thereof
CN104196982A (en) * 2014-08-21 2014-12-10 南通福乐达汽车配件有限公司 Belt wheel special for output end of small engine
CN104196982B (en) * 2014-08-21 2017-02-15 南通福乐达汽车配件有限公司 Belt wheel special for output end of small engine
CN105256391A (en) * 2015-11-10 2016-01-20 太仓市世博纺织配件有限公司 Preparing method of yarn guide

Also Published As

Publication number Publication date
CN101823203B (en) 2011-11-02

Similar Documents

Publication Publication Date Title
CN102527897B (en) Forging method for thin-walled step short sleeve type main shaft flange of water turbine
CN101823203B (en) Method for processing V-shaped straight-hole single-groove stamping part belt pulley
CN101934337A (en) Ring-shaped electro-plastic self-piercing riveting system
KR101293631B1 (en) A manufacturing method of a cylinder-cover for a large-sized engine
CN108787885A (en) A kind of decompressor
JPWO2005099929A1 (en) Method for forming by forging and method for forming case
CN101545440B (en) Method for manufacturing swivel of actuating lever for motorcycle
CN102728772A (en) Method for forging large ship crank shaft
CN103934650A (en) Piston cold extruding forming process
CN101596572B (en) Technological method for producing axle case reinforcing ring
CN201720371U (en) Rolling forming die for manufacturing auto transmission synchronous sliding sleeve blank
CN103949575B (en) Transmission main shaft vertical forging production method and special forging mold
CN202484248U (en) Double-web pulley
CN203843084U (en) Forging die special for vertically forging gearbox main shafts
CN211489292U (en) Forming die for automobile rear axle oil baffle cover
CN202319733U (en) Spline half axle forged blank for heavy truck
CN202123221U (en) Combined mould of prefabricated annular forging cast steel billet
CN103586693A (en) Production method of spinning pulleys
CN100368116C (en) Combined mould for precasting ring-type forge piece cast steel billet
CN219254006U (en) Forging die for novel structure of outer ring
CN102974701B (en) Forming die for machining method for high-strength transverse 8-shaped parts
CN101497160B (en) Method for processing punch forming mold of low-carbon steel sheet material with thickness less than 6mm
CN203471268U (en) Pressing tool for pressing spring ring into ball cup
CN106270156A (en) A kind of special-shaped part processing method
CN109894558B (en) Forging method for claw fork of transmission shaft

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
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20111102

Termination date: 20130330