CN1329136C - Method for processing roller drift punch mould cavity by utilizing cold extrusion technique - Google Patents
Method for processing roller drift punch mould cavity by utilizing cold extrusion technique Download PDFInfo
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- CN1329136C CN1329136C CNB2004100602341A CN200410060234A CN1329136C CN 1329136 C CN1329136 C CN 1329136C CN B2004100602341 A CNB2004100602341 A CN B2004100602341A CN 200410060234 A CN200410060234 A CN 200410060234A CN 1329136 C CN1329136 C CN 1329136C
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- drift
- punching head
- roller
- extrusion
- processing roller
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Abstract
The present invention discloses a method for processing a roller punching head mould cavity by utilizing cold extrusion technique. An extrusion punching head and a positioning sleeve barrel which is fit with a diameter of a roller punching head are manufactured according to the forming dimensions of the roller punching head, blanks of a cold extrusion punching head and the roller punching head are put into the positioning sleeve barrel, the forming part of the extrusion punching head is pressed into the punching head blanks by utilizing an oil hydraulic press, and the forming part of the extrusion punching head retreats from the extrusion punching head and the punching head blanks after pressed to a needed depth. Compared with the existing method for the turning processing of a roller punching head, the present invention has the following characteristics: (1) the dimensional precision of an extrusive punching head can reach 8-9 stage, and the surface roughness can reach Ra 0.4 micrometres; (2) extrusion punching head technique has the advantages of low difficulty and high productive efficiency; (3) the dimensional consistency of the extrusive punching head is good; (4) extrusion processing does not cut off a forging flow line of a material; (5) the puff of the inner part of the material can be welded by the extrusion processing so as to improve the density of the material and finally improve the strength of the material.
Description
Technical field
The invention belongs to a kind of method of processing the roller drift, relate generally to a kind of method of utilizing cold extruding technique processing roller drift die cavity.
Background technology
The roller drift is one of main frock of cold-heading roller.At present, the roller drift is by turning machine-shaping, and it mainly exists following drawback: there is the turning knife mark in (1), and roughness Ra3.2 μ m does not reach the drawing requirement, and in use, knife mark can cause that stress is concentrated, causes drift to fall piece and loses efficacy.(2) near the position at center, cutting speed is low more more for drift, the place that cutting speed is low more, and metal is accompanied in theory and is torn, and therefore, has microfissure.And for the roller drift, be the place of the stressed maximum of unit are near the place at center, this microfissure will become the blasting fuse that the roller drift lost efficacy.(3) technical difficulty of turning drift and labour intensity are bigger, and production efficiency is lower.(4) drift that comes out of turning, footpath, cave size is disperseed, and dimensional uniformity is poor.(5) turning processing has been cut off the original forging flow lines of drift, the service life of having reduced drift to a certain extent.
Summary of the invention
Purpose of the present invention promptly proposes thus, proposes a kind of method of utilizing cold extruding technique processing roller drift die cavity, and service life, production efficiency and dimensional uniformity that it not only can improve drift also can reduce the drift difficulty of processing.
Purpose of the present invention can adopt following technical scheme to realize: make an extruding drift by the compact dimensions of roller drift and reach the sleeve that adapts with the drift Outside Dimensions, cold extrusion drift and roller drift blank are put in the abutment sleeve, the moulding section that utilizes hydraulic press will push drift is pressed in the drift blank, is pressed onto behind the desired depth that the extruding drift is withdrawed from release and the drift blank gets final product.
The present invention compares following characteristics with the method for existing turning processing roller drift: the drift dimensional accuracy that extrude (1) can reach the 8-9 level, and surface roughness can reach Ra0.4 μ m.(2) extruding drift technical difficulty is low, the production efficiency height.(3) the drift dimensional uniformity that squeezes out is good.(4) forging flow lines of material is not cut off in extrusion process.What (5) extrusion process can the seam material internal is loose, has improved material density, has finally improved the strength of materials.
Description of drawings
Accompanying drawing 1 is the work schematic diagram of invention.
Among the figure: 1, the lower table of hydraulic press, 2, lower bolster, 3, the drift blank, 4, abutment sleeve, 5, the extruding drift, 6, upper padding plate, 7, housing screw, 8, dial gauge, 9, upper table.
The specific embodiment
In conjunction with the accompanying drawings, specific embodiments of the invention are described.
As shown in Figure 1, press the compact dimensions of roller drift earlier and make an extruding drift 5, make an abutment sleeve 4 that adapts with punch diameter simultaneously, sleeve 4 is put on the lower table 1 of hydraulic press, cold extrusion drift 5 and roller drift blank 3 are put in the abutment sleeve 4, a backing plate 2 is placed in the bottom of roller drift blank 3, also place a backing plate 6 on the top of extruding drift 5 simultaneously, then, the moulding section that the upper table 9 of hydraulic press will push drift is pressed in the roller drift blank, is pressed onto behind the desired depth release and withdraws from extruding drift and drift blank.The roller drift blank of extrusion modling is entered into the Technology for Heating Processing of back.
When processing roller drift blank, each is provided with the step of (turning) wide 10～15mm with the upper and lower side circumference of roller drift blank, is used for release and help discharging, and a passage 10 is set on sleeve wall.Simultaneously, in order to keep machining accuracy, the gap between extruding drift 5 and the abutment sleeve 4 is 0.01～0.02mm, and the gap between roller drift blank and the abutment sleeve is 0.02～0.04 mm.
When processing roller drift, for the ease of measuring the extruding degree of depth and safety in production, the dial gauge 8 of a band lengthening gauge head is set on forcing press, it is fixed on the upper table 9 of forcing press with housing screw 7.
Claims (6)
1, a kind of method of utilizing cold extruding technique processing roller drift die cavity, it is characterized in that: make an extruding drift (5) by the compact dimensions of roller drift and reach the abutment sleeve (4) that adapts with punch diameter, cold extrusion drift (5) and roller drift blank (3) are put into the abutment sleeve that puts in place (4), the moulding section that utilizes hydraulic press will push drift (5) is pressed in the drift blank (3), is pressed onto behind the desired depth that the extruding drift is withdrawed from release and the drift blank gets final product.
2, the method for utilizing cold extruding technique processing roller drift die cavity according to claim 1 is characterized in that: the dial gauge (8) that a lengthening gauge head is set on the upper table (9) of hydraulic press.
3, the method for utilizing cold extruding technique processing roller drift die cavity according to claim 1 is characterized in that: roller drift blank (3) two ends up and down respectively is provided with the step of wide a 10～15mm.
4, the method for utilizing cold extruding technique processing roller drift die cavity according to claim 1 is characterized in that: on abutment sleeve (4) wall passage (10) is set.
5, the method for utilizing cold extruding technique processing roller drift die cavity according to claim 1, it is characterized in that: the gap between extruding drift (5) and the abutment sleeve (4) is 0.01～0.02mm.
6, the method for utilizing cold extruding technique processing roller drift die cavity according to claim 1, it is characterized in that: the gap between roller drift blank (3) and the abutment sleeve (4) is 0.02～0.04mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100602341A CN1329136C (en) | 2004-11-07 | 2004-11-07 | Method for processing roller drift punch mould cavity by utilizing cold extrusion technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100602341A CN1329136C (en) | 2004-11-07 | 2004-11-07 | Method for processing roller drift punch mould cavity by utilizing cold extrusion technique |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1768975A CN1768975A (en) | 2006-05-10 |
| CN1329136C true CN1329136C (en) | 2007-08-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100602341A Expired - Fee Related CN1329136C (en) | 2004-11-07 | 2004-11-07 | Method for processing roller drift punch mould cavity by utilizing cold extrusion technique |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1329136C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101912889B (en) * | 2009-06-17 | 2013-07-31 | 苏州昆仑先进制造技术装备有限公司 | Distributive extrusion process method and distributive extrusion mold thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110404994B (en) * | 2019-08-20 | 2020-11-20 | 山东大学 | Multi-pass sequential back-extrusion forming method for combined punch of large-sized cylindrical part with bottom |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4270378A (en) * | 1975-12-29 | 1981-06-02 | Kennametal Inc. | Extrusion punch |
| JPS59193712A (en) * | 1983-04-20 | 1984-11-02 | Shin Nippon Koukiyuu Kk | Production of semispherical body |
| CN2154139Y (en) * | 1992-09-28 | 1994-01-26 | 郭卫彬 | Multi-combination cold-heading mould for bearing roller |
-
2004
- 2004-11-07 CN CNB2004100602341A patent/CN1329136C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4270378A (en) * | 1975-12-29 | 1981-06-02 | Kennametal Inc. | Extrusion punch |
| JPS59193712A (en) * | 1983-04-20 | 1984-11-02 | Shin Nippon Koukiyuu Kk | Production of semispherical body |
| CN2154139Y (en) * | 1992-09-28 | 1994-01-26 | 郭卫彬 | Multi-combination cold-heading mould for bearing roller |
Non-Patent Citations (3)
| Title |
|---|
| GCr15钢轴承滚子冷镦冲头淬火开裂分析 张世红，理化实验－物理分册，第38卷第7期 2002 * |
| GCr15钢轴承滚子冷镦冲头淬火开裂分析 张世红，理化实验－物理分册，第38卷第7期 2002;提高汽车差速器壳螺栓冷镦冲头使用寿命的研究 王建中，南京工程学院学报（自然科学版），第2卷第2期 2004 * |
| 提高汽车差速器壳螺栓冷镦冲头使用寿命的研究 王建中，南京工程学院学报（自然科学版），第2卷第2期 2004 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101912889B (en) * | 2009-06-17 | 2013-07-31 | 苏州昆仑先进制造技术装备有限公司 | Distributive extrusion process method and distributive extrusion mold thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1768975A (en) | 2006-05-10 |
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