CN103406719A - Piston rod direct extruding and rolling finish machining technology - Google Patents
Piston rod direct extruding and rolling finish machining technology Download PDFInfo
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- CN103406719A CN103406719A CN2013100225640A CN201310022564A CN103406719A CN 103406719 A CN103406719 A CN 103406719A CN 2013100225640 A CN2013100225640 A CN 2013100225640A CN 201310022564 A CN201310022564 A CN 201310022564A CN 103406719 A CN103406719 A CN 103406719A
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- piston rod
- rolling
- extruding
- grinding
- machining
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Abstract
The invention relates to the piston rod direct extruding and rolling finish machining technology. According to the piston rod direct extruding and rolling finish machining technology, machining with scraps is replaced by machining without scraps, grinding is replaced by extruding and rolling, the extruding and rolling manner is directly applied so as to improve the surface quality of a piston rod, reduce the roughness height of the surface and strengthen the surface. A piston rod cold drawing workblank is straightened and then undergoes machining, the surface quality of the piston rod is improved and the roughness height of the surface is reduced through direct extruding and rolling so as to achieve the two aims of greatly improving the roughness height of the surface and straightening the surface of the piston rod without grinding of a grinder. The piston rod direct extruding and rolling finish machining technology includes the following steps of blanking, straightening, machining, extruding and rolling, surface processing and polishing.
Description
Technical field
The present invention relates to a kind of piston rod directly squeezes and rolls fine-processing technique, particularly with chipless processing, substitute smear metal processing is arranged, roll alternative grinding with squeezing, directly by the crowded mode of rolling, improve the piston rod surface quality, reduce surface roughness value, the piston rod of strengthening surface directly squeezes and rolls fine-processing technique simultaneously.
Background technology
Current known piston rod processing technology adopts following three kinds of modes substantially:
1, blanking-alignment-corase grind-machined-half fine grinding-surface treatment-fine grinding-polishing.
2, front corase grind-roll front fine grinding-finish rolling-plating-polishing is rolled in machined one.The patent No.: 200910043893.
3, blanking, alignment, corase grind, machining, half fine grinding, fine grinding, rolling and processing, salt bath Combined Processing, rear rolling and processing.The patent No.: 200810231020.
Above process is all, fine grinding grinding thick through multiple tracks with grinding machine, and the piston rod surface quality is progressively improved, and roughness value progressively reduces, and roughness value can only reach Ra0.2～0.4 left and right.The residual tension that the grinding superficial layer produces, grinding crack, burns etc., affect the part serviceability, and production efficiency is low, and production cost is high.The chip formation industrial refuse that grinding produces, be unfavorable for environmental protection.
Summary of the invention
In order changing, traditional must to improve the piston rod surface quality with grinding machine, to reduce the deficiency of the process of surface roughness value.The object of the invention is to: a kind of technique is provided, and this technique can not only be saved corase grind, (half fine grinding) precision grinding process, simplifies technique, directly improves the piston rod surface quality, and roughness value is disposable is reduced to below Ra0.08 even minute surface; And can strengthen piston rod surface.
The technical solution adopted for the present invention to solve the technical problems is: the cold drawn blank of the piston rod after cutting off carries out alignment through straightener; Piston rod carries out machined; Squeezing the roller bed directly squeezes and rolls piston rod; The piston rod processing technology is: blanking-alignment-machined-squeeze and roll-surface treatment-polishing.
By the crowded of piston rod rolled, make metal surface produce plastic deformation, thereby change microcosmos geometric shape and the physical property of surface of the work, form new surface roughness, surface roughness is greatly improved, directly reach below Ra0.08 even mirror status, crowded residual stress and the cold hardening of rolling the superficial layer generation of piston rod simultaneously can be strengthened piston rod surface, improved piston rod surface hardness, fatigue resistance, wearability and resistance to saltfog, dimensional accuracy is stable for extended periods of time relatively, improve the piston rod fit quality, reduce wear, extend piston rod service life.
The invention has the beneficial effects as follows:
1, changed original grinding theory, changed traditional technique, simplified the piston rod processing process, made technique more be tending towards rationally, optimize.
2, substitute grinding, simplify process equipment, reduce the energy and raw-material consumption, greatly save production cost, enhance productivity.
3, by squeezing, roll, directly improve the piston rod surface quality, reduce roughness value, make its surface even reach minute surface.
4, changed the physical property of piston rod surface, improved case hardness, fatigue resistance, wearability, dimensional accuracy is stable for extended periods of time relatively, improves the piston rod fit quality, reduces wear, and extends piston rod service life.
5, by squeezing, roll, that can repair that piston rod occurs in processing, transport process crushes, damages and the blemish such as scuffing, greatly improves product percent of pass.
6, squeeze and to roll processing and do not produce scrap, waste liquid, need not process industrial refuse, be conducive to energy-conserving and environment-protective, have advantages of in machining and can't obtain, meet the new concept of " green manufacturing ".
The specific embodiment
The present invention is achieved in that the cold drawn blank of piston rod after cutting off is carried out to alignment through straightener; Piston rod carries out machined; Squeezing the roller bed directly squeezes and rolls piston rod; The piston rod processing technology is: blanking-alignment-machined-squeeze and roll-surface treatment-polishing.Piston rod is through after directly squeezing and rolling, and surface quality increases substantially, and roughness value is disposable is reduced to below Ra0.08 even minute surface.This process reaches very big piston rod surface roughness and two kinds of purposes of strengthening piston rod surface improved simultaneously.
Claims (1)
1. a piston rod directly squeezes and rolls fine-processing technique, it is characterized in that: the cold drawn blank of the piston rod after cutting off carries out alignment through straightener; Piston rod carries out machined; Squeezing the roller bed directly squeezes and rolls piston rod; The piston rod processing technology is: blanking-alignment-machined-squeeze and roll-surface treatment-polishing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100225640A CN103406719A (en) | 2013-01-11 | 2013-01-11 | Piston rod direct extruding and rolling finish machining technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100225640A CN103406719A (en) | 2013-01-11 | 2013-01-11 | Piston rod direct extruding and rolling finish machining technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103406719A true CN103406719A (en) | 2013-11-27 |
Family
ID=49599785
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013100225640A Pending CN103406719A (en) | 2013-01-11 | 2013-01-11 | Piston rod direct extruding and rolling finish machining technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103406719A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040038057A (en) * | 2002-10-31 | 2004-05-08 | 발레오만도전장시스템스코리아 주식회사 | Shaft Manufacturing Process for Alternator |
| CN101342653A (en) * | 2007-10-15 | 2009-01-14 | 张铅娒 | Trapezoidal thread valve rod processing technique |
| CN201516544U (en) * | 2009-09-16 | 2010-06-30 | 青岛张氏机械有限公司 | Tumbling mill |
| CN102492918A (en) * | 2011-11-29 | 2012-06-13 | 青岛张氏机械有限公司 | Piston rod and production method thereof as well as carbonitriding agent for piston rod surface treatment |
| CN102785061A (en) * | 2012-08-01 | 2012-11-21 | 宁夏共享集团有限责任公司 | Method for processing high-precision axle products |
-
2013
- 2013-01-11 CN CN2013100225640A patent/CN103406719A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040038057A (en) * | 2002-10-31 | 2004-05-08 | 발레오만도전장시스템스코리아 주식회사 | Shaft Manufacturing Process for Alternator |
| CN101342653A (en) * | 2007-10-15 | 2009-01-14 | 张铅娒 | Trapezoidal thread valve rod processing technique |
| CN201516544U (en) * | 2009-09-16 | 2010-06-30 | 青岛张氏机械有限公司 | Tumbling mill |
| CN102492918A (en) * | 2011-11-29 | 2012-06-13 | 青岛张氏机械有限公司 | Piston rod and production method thereof as well as carbonitriding agent for piston rod surface treatment |
| CN102785061A (en) * | 2012-08-01 | 2012-11-21 | 宁夏共享集团有限责任公司 | Method for processing high-precision axle products |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20131127 |