CN103659166A - Precision cold extrusion forming processing method for small blind tooth pieces - Google Patents
Precision cold extrusion forming processing method for small blind tooth pieces Download PDFInfo
- Publication number
- CN103659166A CN103659166A CN201210329047.3A CN201210329047A CN103659166A CN 103659166 A CN103659166 A CN 103659166A CN 201210329047 A CN201210329047 A CN 201210329047A CN 103659166 A CN103659166 A CN 103659166A
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- shape
- squeeze
- forcing press
- precision
- mould
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F45/00—Wire-working in the manufacture of other particular articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/02—Making uncoated products
- B21C23/04—Making uncoated products by direct extrusion
- B21C23/14—Making other products
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
The invention relates to a precision cold extrusion forming processing method for small blind tooth pieces. The processes of high-speed blanking by a punching machine, refining of a blank, closed shape extrusion and precision tooth extrusion forming are adopted, no machining and chip cutting procedure exists in the whole production process, the small blind tooth pieces are formed completely in a punching and extruding mode, and the formed small blind tooth pieces are smooth in surface and high in shape position precision and can completely meet the requirements for the shape and the size precision stated by a finished product drawing. The processing method is few in processing procedure, good in product uniformity, high in material utilization rate and applicable to mass production of the precision small blind tooth pieces.
Description
Technical field
The present invention relates to the stamping technology of toothed member, be particularly useful for the blind tooth part of little shape precise cold extrusion forming technology.
Background technology
The precise cold extrusion modling of toothed member is at present mainly used in logical tooth processing, and for the blind extruding of laughing somebody to scorn, especially as the little toothed member of precision of mushroom shaped, after taking common cold extrusion mode to push rear blank, need machined excision waste material, and the machine added-time, because workpiece is difficult to carry out waste material excision processing without reliable, stable clamping face and locating surface, therefore, conventionally way has two kinds: the first: adopt bar on numerically controlled lathe, to complete car shape, gear hobbing, cut-out processing, afterwards, manually remove end face burr.The method weak point is: 1 production efficiency is very low, cannot produce in enormous quantities; 2 production costs are high; After 3 gear hobbings, profile of tooth is not full, bad tooth is many, castellated shape uniformity is poor.The second: machine adds base, squeeze gear hobbing after shape.The method weak point is: it is low that 1 machine adds base efficiency; 2 production costs are higher; After 3 gear hobbings, profile of tooth is not full, bad tooth is many, castellated shape uniformity is poor.
Summary of the invention
The technical solutions that the object of this invention is to provide the extrusion modling of the blind tooth part of a kind of little shape precise cold, before adopting the refining blank technology of cold extrusion to solve cold extrusion, refine the bottleneck problem that base is produced, take precise cold extrusion modling to solve common extruding and need to excise waste material, after manually going end face Burr Problem and gear hobbing, profile of tooth is not full, bad tooth is many, the poor problem of castellated shape uniformity, product surface after extrusion modling is smooth, the accuracy of form and position is high, complete shape and the dimension precision requirement that reaches finished figure regulation completely, and whole production process is without any machined order, manufacturing procedure is few, good product consistency, stock utilization is high, be applicable to the quality control to product in producing in enormous quantities, High-efficient Production and low production cost requirement.
The object of the invention is to be achieved through the following technical solutions:
1 blanking: forcing press blanking cuts into joint material by coiled strip steel wire, the two-sided made allowance 0.3mm ~ 0.5mm of joint material on forcing press.
2 shapings: joint material is placed in the shaping mould with cutting edge, carries out upsetting squeeze on forcing press, unnecessary waste material is extruded outside mould.
3 deburrings: the blank after shaping is put into unhairing machine and carry out deburring and cleaning.
4 squeeze shape: by putting into and squeeze shape mould after the micro-painting extruding of the blank after deburring oil, seal and squeeze shape on forcing press, squeeze out the size of the shape of product except profile of tooth.
5 crowded teeths: by putting into crowded teeth mould after the micro-painting extruding of the workpiece oil squeezing after shape, use forward extrusion mode to carry out crowded teeth on forcing press.
6 clean: with gasoline, product is cleaned.
7 checks: carry out size and appearance test by product figure.
The present invention adopts the blanking of punch press high speed, refining base, sealing to squeeze shape, accurate crowded teeth moulding process, in whole production process without any scraps during machining operation, completely adopt and rush fashion of extrusion moulding, product surface after moulding is smooth, the accuracy of form and position is high, reach shape and the dimension precision requirement of finished figure regulation completely, this technology method manufacturing procedure is few, good product consistency, profile of tooth are full, reliable without bad tooth, steady quality; Stock utilization is high, and cost is low, and because operation is lacked only 0.2 yuan/part of the high-accuracy extrusion process cost of efficiency, and machined needs 3.5 yuan/part; Than machined, can save 2/3 raw material, die life is high, and one pair of YG15 carbide alloy crowded teeth mould life-span can reach more than 300,000 times; Production efficiency is high, is 30 times of (0.5/min of machined of current domestic employing machined moulding; 15/min of precise cold extruding).
The inventive method is applicable to accurate little toothed member and produces in enormous quantities.
Accompanying drawing explanation
Fig. 1-blanking procedure figure;
Fig. 2-trimming figure;
Fig. 3-crowded shape process chart;
Fig. 4-crowded teeth process chart (pushing finished figure);
The tooth portion sectional view of Fig. 5-crowded teeth operation.
The specific embodiment
1, blanking, referring to Fig. 1
Use forcing press blanking, coiled strip steel wire is cut on forcing press to the joint material of length 10mm ~ 10.2mm;
2, shaping, referring to Fig. 2
Joint material is placed in the shaping mould with cutting edge, carries out upsetting squeeze on forcing press, unnecessary waste material is extruded outside mould, and the blank diameter after shaping is
, length 98.7mm;
3, deburring
Blank after shaping is put into spiral-flow type finishing machine in batches, add abrasive material and mill liquid to carry out deburring, water rinses and cleans, dries afterwards;
4, squeeze shape, referring to Fig. 3
By putting into and squeeze shape mould after the micro-painting of the blank after shaping deburring extruding oil, on gap-framepress, seal and squeeze shape, squeeze out the size of the shape of product except profile of tooth, from major part to top diameter and length be respectively
mm,
mm,
mm,
mm,
3mm,
mm.
5, crowded teeth, referring to Fig. 4 and Fig. 5
After squeezing the micro-painting extruding of the workpiece oil after shape, put into crowded teeth mould, on J23-16 gap-framepress, use forward extrusion mode to diameter
mm, length
mm cylinder carries out crowded teeth.
6, clean
With gasoline, product is cleaned.
7, check
By product figure, carry out size and appearance test.
Claims (1)
1. the blind tooth part of a little shape precise cold extrusion modling processing method, is characterized in that, step is as follows:
(1) blanking: use forcing press blanking, coiled strip steel wire is cut into joint material on forcing press, the two-sided made allowance 0.3mm ~ 0.5mm of joint material;
(2) shaping: joint material is placed in the shaping mould with cutting edge, carries out upsetting squeeze on forcing press, unnecessary waste material is extruded outside mould;
(3) deburring: the blank after shaping is put into unhairing machine and carry out deburring and cleaning;
(4) squeeze shape: by putting into and squeeze shape mould after the micro-painting extruding of the blank of deburring oil, on forcing press, seal and squeeze shape, squeeze out the size of the shape of product except profile of tooth;
(5) crowded teeth: by putting into crowded teeth mould after the micro-painting extruding of the blank oil squeezing after shape, use forward extrusion mode to carry out crowded teeth on forcing press;
(6) clean: with gasoline, product is cleaned;
(7) check: carry out size and appearance test by product figure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210329047.3A CN103659166A (en) | 2012-09-07 | 2012-09-07 | Precision cold extrusion forming processing method for small blind tooth pieces |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210329047.3A CN103659166A (en) | 2012-09-07 | 2012-09-07 | Precision cold extrusion forming processing method for small blind tooth pieces |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103659166A true CN103659166A (en) | 2014-03-26 |
Family
ID=50298603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210329047.3A Pending CN103659166A (en) | 2012-09-07 | 2012-09-07 | Precision cold extrusion forming processing method for small blind tooth pieces |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103659166A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104416003A (en) * | 2013-08-23 | 2015-03-18 | 重庆长安工业(集团)有限责任公司 | Cold-extruding forming method of small toothed blind perforated part |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020005078A1 (en) * | 1999-06-30 | 2002-01-17 | Trw Inc. | Rack and pinion steering apparatus and method for manufacturing a helical pinion |
| CN1607047A (en) * | 2003-10-14 | 2005-04-20 | 日本精工株式会社 | Molding method for geared member with boss and geared member with boss |
| CN201064813Y (en) * | 2007-06-15 | 2008-05-28 | 上海上标汽车紧固件有限公司 | Special-purpose riveting pressing bolt forming die |
| CN101767118A (en) * | 2008-12-31 | 2010-07-07 | 江苏汤臣汽车零部件有限公司 | Method and equipment for processing inner geared sleeve of automobile |
| CN102166588A (en) * | 2010-02-25 | 2011-08-31 | 蒋永宋 | Method for processing half axle gear by using cold extrusion process |
-
2012
- 2012-09-07 CN CN201210329047.3A patent/CN103659166A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020005078A1 (en) * | 1999-06-30 | 2002-01-17 | Trw Inc. | Rack and pinion steering apparatus and method for manufacturing a helical pinion |
| CN1607047A (en) * | 2003-10-14 | 2005-04-20 | 日本精工株式会社 | Molding method for geared member with boss and geared member with boss |
| CN201064813Y (en) * | 2007-06-15 | 2008-05-28 | 上海上标汽车紧固件有限公司 | Special-purpose riveting pressing bolt forming die |
| CN101767118A (en) * | 2008-12-31 | 2010-07-07 | 江苏汤臣汽车零部件有限公司 | Method and equipment for processing inner geared sleeve of automobile |
| CN102166588A (en) * | 2010-02-25 | 2011-08-31 | 蒋永宋 | Method for processing half axle gear by using cold extrusion process |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104416003A (en) * | 2013-08-23 | 2015-03-18 | 重庆长安工业(集团)有限责任公司 | Cold-extruding forming method of small toothed blind perforated part |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140326 |
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| WD01 | Invention patent application deemed withdrawn after publication |