CN104175075A - Piston ring manufacturing process beneficial to chromium plating quality - Google Patents
Piston ring manufacturing process beneficial to chromium plating quality Download PDFInfo
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- CN104175075A CN104175075A CN201410402769.6A CN201410402769A CN104175075A CN 104175075 A CN104175075 A CN 104175075A CN 201410402769 A CN201410402769 A CN 201410402769A CN 104175075 A CN104175075 A CN 104175075A
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- chromium plating
- turning
- piston ring
- manufacturing process
- finish turning
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/06—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass piston rings from one piece
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electroplating Methods And Accessories (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The invention discloses a piston ring manufacturing process beneficial to chromium plating quality. The piston ring manufacturing process comprises the steps of clamping, inner and outer circle profiling, inlaying groove shaping, chamfering of an external angle, chromium plating, outer circle shaping grinding and honing; the inlaying groove shaping step adopts turning treatment; the turning treatment comprises two processes of rough turning and finish turning; the finish turning process comprises two process steps of half finish turning and finish turning. The process route is high in processing efficiency, uniform in thickness of a chromium coating, high in turning precision and long in service life of the cutting tool.
Description
Technical field
The present invention relates to engine component manufacturing process field, particularly relate to a kind of piston ring manufacturing process that is beneficial to chromium plating quality.
Background technology
For improving the service life of piston ring, the outer round surface of piston ring piston ring in the time producing has all carried out chromium plating processing, and in prior art, the form of chromium plating processing is divided into: outer full chromium plating, outer full embedded chrome plating and three kinds of forms of cylindrical half embedded chrome plating.Outer full chrome plated piston ring processing technology is good, yield rate is high, relative cost is lower, wearability is good, but because its special processing technology, must carry out chamfering or rounding processing to piston ring excircle corner angle, this is just for hidden danger has been buried in the increase of piston ring air leakage and I. C. engine oil, fuel consumption increase; Equally, existing outer full embedded chrome plating also exists and wears no resistance and the not good shortcoming of processing technology.
Cylindrical half embedded chrome plating has been taken into account the design advantage of full chromium plating and full embedded chrome plating piston ring, there is good air-tightness, lower consumption of lubricating oil, tension rigidity energy preferably, kept the anti-wear performance of full chrome plated piston ring simultaneously, but processing technology is poor, percent defective is higher, and along with internal combustion engine is to the future development of high speed, high-power, low oil consumption and low emission, how further optimizing cylindrical half embedded chrome plating technique is the important channel of jigger lifting piston ring performance.
Summary of the invention
How further to optimize cylindrical half embedded chrome plating technique be the problem of the important channel of jigger lifting piston ring performance for above-mentioned, the invention provides a kind of piston ring manufacturing process that is beneficial to chromium plating quality.
For the problems referred to above, the piston ring manufacturing process that is beneficial to chromium plating quality provided by the invention reaches goal of the invention by following technical essential: be beneficial to the piston ring manufacturing process of chromium plating quality, comprise clamping, inside and outside circle profiling, embedding groove moulding, fall exterior angle, chromium plating, cylindrical moulding mill and honing step;
Described embedding groove forming step adopts machining;
Described turning processing comprises rough turning and finish turning two procedures, and described finish turning operation comprises half finish turning and two work steps of finish turning.
Definite process route is compared to prior art above, before clamping step is arranged on embedding groove moulding and chromium plating step, embedding groove moulding simultaneously adopts turning processing, just make disposable clamping inside and outside circle profiling in this process route, embedding groove cutting, chromium plating on same gyroaxis, to complete, this need to be clamped to piston on moulding mill again, the cutting tool adopting in inside and outside circle profiling process also can be applied mechanically, and is conducive to improve working (machining) efficiency; Further, because chromium plating is identical with the center of rotation of inside and outside circle profiling and embedding groove cutting, make the even thickness of chromium coating in this technique, show through test of many times, chromium coating thickness difference can be controlled in 0.02mm; In car embedding groove operation, the setting of half finish turning work step can reduce the allowance of finish turning work step, make the allowance of embedding groove both sides even simultaneously, be conducive to slow down the wear extent of lathe tool in finish turning work step, be convenient to like this improve turning accuracy in finish turning work step and the service life of cutter, be conducive to the product quality in producing by batch.
Further technical scheme is:
For further ensureing the quality of product, described honing step subsequent also comprises checking procedure.
For eliminating the inhomogeneous phenomenon of chromium plating, the service life of improving product and the precision coordinating with cylinder body, described cylindrical moulding mill comprises the contour grinding treatment step of embedding groove left and right groove after embedding groove chromium plating.
The present invention has following beneficial effect:
1, above definite process route is compared to prior art, before clamping step is arranged on embedding groove moulding and chromium plating step, embedding groove moulding simultaneously adopts turning processing, just make disposable clamping inside and outside circle profiling in this process route, embedding groove cutting, chromium plating on same gyroaxis, to complete, this need to be clamped to piston on moulding mill again, the cutting tool adopting in inside and outside circle profiling process also can be applied mechanically, and is conducive to improve working (machining) efficiency; Further, because chromium plating is identical with the center of rotation of inside and outside circle profiling and embedding groove cutting, make the even thickness of chromium coating in this technique, show through test of many times, chromium coating thickness difference can be controlled in 0.02mm.
2, in car embedding groove operation, the setting of half finish turning work step can reduce the allowance of finish turning work step, make the allowance of embedding groove both sides even simultaneously, be conducive to slow down the wear extent of lathe tool in finish turning work step, be convenient to like this improve turning accuracy in finish turning work step and the service life of cutter, be conducive to the product quality in producing by batch.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further detail, but structure of the present invention is not limited only to following examples.
Embodiment 1:
Be beneficial to the piston ring manufacturing process of chromium plating quality, comprise clamping, inside and outside circle profiling, embedding groove moulding, fall exterior angle, chromium plating, cylindrical moulding mill and honing step;
Described embedding groove forming step adopts machining;
Described turning processing comprises rough turning and finish turning two procedures, and described finish turning operation comprises half finish turning and two work steps of finish turning.
Definite process route is compared to prior art above, before clamping step is arranged on embedding groove moulding and chromium plating step, embedding groove moulding simultaneously adopts turning processing, just make disposable clamping inside and outside circle profiling in this process route, embedding groove cutting, chromium plating on same gyroaxis, to complete, this need to be clamped to piston on moulding mill again, the cutting tool adopting in inside and outside circle profiling process also can be applied mechanically, and is conducive to improve working (machining) efficiency; Further, because chromium plating is identical with the center of rotation of inside and outside circle profiling and embedding groove cutting, make the even thickness of chromium coating in this technique, show through test of many times, chromium coating thickness difference can be controlled in 0.02mm; In car embedding groove operation, the setting of half finish turning work step can reduce the allowance of finish turning work step, make the allowance of embedding groove both sides even simultaneously, be conducive to slow down the wear extent of lathe tool in finish turning work step, be convenient to like this improve turning accuracy in finish turning work step and the service life of cutter, be conducive to the product quality in producing by batch.
Embodiment 2:
The present embodiment is further qualified on the basis of embodiment 1: further technical scheme is: for further ensureing the quality of product, described honing step subsequent also comprises checking procedure.
For eliminating the inhomogeneous phenomenon of chromium plating, the service life of improving product and the precision coordinating with cylinder body, described cylindrical moulding mill comprises the contour grinding treatment step of embedding groove left and right groove after embedding groove chromium plating.
Above content is the further description of the present invention being done in conjunction with concrete preferred embodiment, can not assert that the specific embodiment of the present invention is confined to these explanations.For general technical staff of the technical field of the invention, not departing from other embodiments that draw under technical scheme of the present invention, all should be included in protection scope of the present invention.
Claims (3)
1. the piston ring manufacturing process that is beneficial to chromium plating quality, is characterized in that, comprises clamping, inside and outside circle profiling, embedding groove moulding, falls exterior angle, chromium plating, cylindrical moulding mill and honing step;
Described embedding groove forming step adopts machining;
Described turning processing comprises rough turning and finish turning two procedures, and described finish turning operation comprises half finish turning and two work steps of finish turning.
2. the piston ring manufacturing process that is beneficial to chromium plating quality according to claim 1, is characterized in that, described honing step subsequent also comprises checking procedure.
3. the piston ring manufacturing process that is beneficial to chromium plating quality according to claim 1, is characterized in that, described cylindrical moulding mill comprises the contour grinding treatment step of embedding groove left and right groove after embedding groove chromium plating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410402769.6A CN104175075A (en) | 2014-08-17 | 2014-08-17 | Piston ring manufacturing process beneficial to chromium plating quality |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410402769.6A CN104175075A (en) | 2014-08-17 | 2014-08-17 | Piston ring manufacturing process beneficial to chromium plating quality |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104175075A true CN104175075A (en) | 2014-12-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410402769.6A Pending CN104175075A (en) | 2014-08-17 | 2014-08-17 | Piston ring manufacturing process beneficial to chromium plating quality |
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| Country | Link |
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| CN (1) | CN104175075A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106944796A (en) * | 2017-02-14 | 2017-07-14 | 江西昌河航空工业有限公司 | A kind of aviation slewing parts leakproof chromium processing method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0436996A1 (en) * | 1990-01-09 | 1991-07-17 | Ae Piston Products Limited | Piston Rings |
| CN1307948A (en) * | 2001-03-18 | 2001-08-15 | 常永峰 | Motorcycle piston ring machining process |
| CN102328187A (en) * | 2011-08-31 | 2012-01-25 | 慈溪市汇丽机电有限公司 | Machining method of inner ring gauge |
| CN102615580A (en) * | 2010-12-31 | 2012-08-01 | 东风汽车零部件(集团)有限公司 | Method for machining special honing piston rings |
-
2014
- 2014-08-17 CN CN201410402769.6A patent/CN104175075A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0436996A1 (en) * | 1990-01-09 | 1991-07-17 | Ae Piston Products Limited | Piston Rings |
| CN1307948A (en) * | 2001-03-18 | 2001-08-15 | 常永峰 | Motorcycle piston ring machining process |
| CN102615580A (en) * | 2010-12-31 | 2012-08-01 | 东风汽车零部件(集团)有限公司 | Method for machining special honing piston rings |
| CN102328187A (en) * | 2011-08-31 | 2012-01-25 | 慈溪市汇丽机电有限公司 | Machining method of inner ring gauge |
Non-Patent Citations (2)
| Title |
|---|
| 郑照刚: "半镶嵌镀铬活塞环机加工工艺改进", 《内燃机配件》 * |
| 陆世平: "改进活塞环镶嵌镀铬加工工艺", 《现代零部件》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106944796A (en) * | 2017-02-14 | 2017-07-14 | 江西昌河航空工业有限公司 | A kind of aviation slewing parts leakproof chromium processing method |
| CN106944796B (en) * | 2017-02-14 | 2019-04-02 | 江西昌河航空工业有限公司 | A kind of aviation slewing parts leakproof chromium processing method |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20141203 |
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| RJ01 | Rejection of invention patent application after publication |