CN102275061B - Process for machining check ring of piston pin - Google Patents
Process for machining check ring of piston pin Download PDFInfo
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- CN102275061B CN102275061B CN 201110067268 CN201110067268A CN102275061B CN 102275061 B CN102275061 B CN 102275061B CN 201110067268 CN201110067268 CN 201110067268 CN 201110067268 A CN201110067268 A CN 201110067268A CN 102275061 B CN102275061 B CN 102275061B
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- ring
- piston pin
- retaining ring
- spring steel
- pin processing
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- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The invention relates to a process for machining a check ring of a piston pin, and aims to provide a process which is high in production speed, accurate, stable and reliable and is used for machining a check ring of a piston pin. The process comprises selecting materials, coiling a spring, performing heat treatment, performing imaging inspection, performing lustrous finishing, cleaning, oiling and packaging. In the process, the manufactured coiled spring is subjected to the imaging inspection, so the inspection is convenient; and angular measurement and diameter measurement are saved, the inspected structure is visual, the inspection efficiency can be improved, and the finished product ratio and accuracy of the check ring can be improved simultaneously.
Description
Technical field
The present invention relates to the spring processing technique field, especially relate to a kind of processing technology of locking the retaining ring for piston pin of usefulness.
Background technology
Spring is to use more, that coverage is wider a kind of parts in the present industrial technology; Realize the auxiliary movement of multiple complicacy through the restoring force of spring; All will use spring in a lot of mechano-electronic products, spring can produce bigger strain when stand under load, be converted into deformation energy to mechanical power or kinetic energy; And the distortion of unloading rear spring disappears and reinstatement, and deformation energy is converted into mechanical power or kinetic energy.
Back-up ring is a kind of deformed spring in the spring, and back-up ring is fastened on the cast parts on the axle, can prevent to be contained in other part plaies on the axle, and retaining ring for piston pin major limitation axial float is fixed piston pin simultaneously.
General this back-up ring all is the plane back-up ring, and the centre is for circle and have an opening, is provided with the disengagement hole that common back-up ring intercalation is gone at the place, both ends of opening; Dismantle the plane back-up ring through the back-up ring embedding, this back-up ring can fixedly move axially, but self can rotate around axis; Can not fix; And plane back-up ring opening is size-constrained, is out of shape lessly, can not the plane back-up ring be pulled down from opening part in some occasion.
Patent Office of the People's Republic of China discloses a CN101508024A document on August 19th, 2009; Name is called a kind of processing method of subdivision back-up ring; Comprise: turning is processed → is dissectd: dissect and form the high workpiece → bonding of dissecing of swinging of circumferentially luxuriant and rich with fragrance sealing swinging high Vehicle Processing part: will swing the high mouth that dissects that dissects workpiece and be bonded together and be recovered to closed circular → grinding: to the end face of bonding back workpiece and inside and outside footpath surfacing to the otch of finished size → separately: workpiece after the grinding heated bonding agent is melted, institute is bonding to be dissectd mouthful automatically separately formation and dissects the back-up ring finished product.This processing method is the same with the plane back-up ring, needs Vehicle Processing, back-up ring to strut angle smaller, can not throw off dismounting from opening part.
Summary of the invention
The purpose of this invention is to provide a kind of quick, accurate accurate, reliable and stable retaining ring for piston pin processing technology of producing.
Above-mentioned technical problem of the present invention mainly is able to solve through following technical proposals: a kind of retaining ring for piston pin processing technology; It is characterized in that comprising the steps: (1) selection: require to select suitable spring steel according to spring parameter earlier, and select suitable mandrel and shaping jig for use according to the shape need of spring;
(2) end with spring steel penetrates from entrance hole, and the end is formed back-up ring opening bend by the shaping jig bending;
(3) mandrel rotation, spring steel continue to penetrate along the recessed district of the arc of mandrel end and are bent to form the back-up ring curved portions by shaping jig;
(4) cut off spring steel, and the end of spring steel is bent into back-up ring openend bend;
(5) back-up ring is heat-treated eliminate stress;
(6) back-up ring is carried out to the picture check, defective back-up ring is carried out deflection eliminate;
(7) carry out polishing, cleaning to having inspected qualified back-up ring;
(8) back-up ring after polishing, the cleaning is oiled;
(9) pack at last.
The spring steel bending is to be realized by shaping jig, and the end of shaping jig is the processing end, and different angle of bend, different spring steel diameters need corresponding shaping jig; Go in order in the time of the processing back-up ring, earlier bend is processed in the end, the reprocessing middle part forms curved portions; Process another bend at last, the curved portions in the middle of the back-up ring adds can guarantee that length meets the requirements man-hour, and two bends add can reserve necessary surplus man-hour; The error that anti-Sealing shield ring distortion occurs, surplus can be revised, and finally becomes qualified finished product; Thereby and can not cause substandard products can improve yield rate, reduce cost; Will test to semi-finished product, if all operation is accomplished just check, occur just possibly causing bigger waste behind the substandard products, the bending of first step wind spring belongs to most important operation; And the probability that substandard products occur is also the highest, substandard products occur after waiting whole operations to accomplish check, has just wasted a large amount of follow-up work, and cost also can increase; And after the wind spring bending, test and can find substandard products as early as possible and handle, can reprocess or revise, improve yield rate; Thereby reduce cost, when wind spring is crooked, the mandrel rotation; Feeding the time, can not cause the spring steel surface abrasion like this, and the stress that can reduce fricative heat and possibly concentrate; After the wind spring bending wind spring being heat-treated, mainly is to eliminate the stress that produces in the spring steel BENDING PROCESS, prevents the concentrated damage that back-up ring is caused of stress, improves the security reliability of back-up ring; Curved portions in the middle of the back-up ring can be launched and produce elastic force and block bearing pin; Two bends of back-up ring will assemble and be fixing; The elastic force that back-up ring produces all has two bends to transmit; Therefore the angle of bend and between gap and the mutual alignment working condition that can influence back-up ring, the angle and the distance of the bend of check back-up ring can guarantee that the duty of back-up ring adheres to specification; The imaging check can obtain assay more intuitively, improves checkability, also alleviates working strength of workers, can also lower the error of check simultaneously; If the check back finds that deviation appears in the shape of back-up ring for the first time, then to revise back-up ring, eliminate unnecessary deflection; For the first time will carry out surface treatment to back-up ring after the assay was approved, surface treatment is carried out according to the environment for use and the duty of back-up ring.
As preferably, make the back-up ring image of a standard according to the designing requirement of back-up ring, adopt projector apparatus that back-up ring is carried out projection and form projected image and compare with the back-up ring image of standard, judge whether back-up ring is qualified.Projector apparatus forms projected image to the back-up ring projection; Back-up ring image comparison with projected image and standard; Whether overlappingly see, whether have deviation between the two, if exist deviation to represent that the shape of back-up ring does not meet designing requirement; Also can know incongruent position in which position, thereby conveniently back-up ring revised.
As preferably, the back-up ring image of standard is divided into front view and side view, and the projected image that projector apparatus produces is divided into orthographic projection and lateral projection, and is corresponding one by one according to the orientation in the time of check.Back-up ring belongs to planar structure, and two views can show spring configuration, and projected image compares with two views are corresponding one by one, judges whether belong to qualified products according to registration.
As preferably, heat treatment is tempering in the continuous tempering furnace of net belt type, and temperature is at 200-400 ℃, and the time was controlled at 30-50 minute.The stress that spring steel produces is mainly eliminated in tempering in the bending friction.
As preferably, clean and adopt ultrasonic cleaning process, when the part cleannes are not up to standard, adopt finishing process to make it up to standard.
As preferably, the employing antirust oil that oils carries out again antirust oil to back-up ring simultaneously and cleans.
As preferably, the periphery of mandrel is provided with the recessed district of horizontal arc one, the position of entrance hole and the recessed district of the arc of level flush.The recessed district of the arc of level entrance hole is concordant on the mandrel, and the spring steel feeding time, openend bend and curved portions are in same horizontal plane like this, and machining accuracy is high, cooperates shaping jig, and working (machining) efficiency is higher.
As preferably, shaping jig moves on workbench and adopts roll mode, and workbench is provided with scale, and shaping jig is connected with and moves up and down device.The roll mode resistance is little, and is also little to the wearing and tearing of table slide, can the long period keep precision.
Effective effect of the present invention is: the check that forms images after wind spring is processed, check conveniently, and saved angular surveying, diameter measurement, the structure of check is more directly perceived, can improve efficiency of test, can improve the yield rate and the precision of back-up ring simultaneously.
Description of drawings
Fig. 1 is a kind of schematic flow sheet of the present invention;
Fig. 2 is the structural representation of a kind of back-up ring of the present invention;
Among the figure: 1, bend, 2, curved portions.
The specific embodiment
Through embodiment, do further bright specifically below to technical scheme of the present invention.
Embodiment: a kind of retaining ring for piston pin (referring to accompanying drawing 1); Comprise curved portions 2 that mediates and the bend 1 that is in the curved portions two ends; Bend and curved portions are in same horizontal plane; Two bends are separated from each other from outer phase back-up ring interior curve, and two bends tilt and are Eight characters structure, are in distance between the bend end in the back-up ring greater than the distance between the bend root that is in the back-up ring periphery.
A kind of retaining ring for piston pin processing technology (referring to accompanying drawing 2); Comprise the steps: (1) selection: earlier require to select suitable spring steel, and select suitable mandrel and shaping jig for use according to the shape need of spring according to spring parameter, shaping jig be arranged on mandrel around; Order according to processing is arranged; The periphery of mandrel is provided with the recessed district of horizontal arc one, the recessed district of the arc of entrance hole and level flush;
(2) end with spring steel penetrates from entrance hole, and the end is by the bend 1 of shaping jig bending formation back-up ring openend, and shaping jig moves on workbench and adopts roll mode in the bending process;
(3) mandrel rotation, spring steel is bent to form curved portions 2 along the recessed district of the arc of mandrel end by shaping jig, and workbench is provided with scale, and shaping jig drives the adjustment position by mobile device;
(4) cut off spring steel, and the end of spring steel is bent into back-up ring openend bend;
(5) wind spring is put in the continuous tempering furnace of net belt type wind spring is carried out tempering, temperature is at 300 ℃, and the time was controlled at 40 minutes;
(6) make the back-up ring image of a standard according to the designing requirement of back-up ring; Comprise front view and side view; Use projector apparatus that wind spring is carried out to the picture check, the projected image that projector apparatus produces is divided into orthographic projection and lateral projection, and is corresponding one by one according to the orientation in the time of check;
(7) back-up ring of disqualified upon inspection is revised, mainly carried out deflection according to the result who checks and eliminate; Carry out the polishing cleaning to having inspected qualified back-up ring, clean and adopt ultrasonic cleaning process, when the part cleannes are not up to standard, adopt finishing process to make it up to standard;
(8) to antirust oil on the back-up ring after polishing, the cleaning, simultaneously back-up ring is carried out antirust oil and clean;
(9) pack after qualified.
The foregoing description is to explanation of the present invention, is not to qualification of the present invention, any structural approach after the simple transformation of the present invention is all belonged to protection scope of the present invention.
Claims (8)
1. a retaining ring for piston pin processing technology is characterized in that comprising the steps: (1) selection: select suitable spring steel according to the retaining ring for piston pin parameter request earlier, and select suitable mandrel and shaping jig for use according to the shape need of retaining ring for piston pin;
(2) end with spring steel penetrates from entrance hole, and the end is formed back-up ring opening bend by the shaping jig bending;
(3) mandrel rotation, spring steel continue to penetrate along the recessed district of the arc of mandrel end and are bent to form the back-up ring curved portions by shaping jig;
(4) cut off spring steel, and the end of spring steel is bent into back-up ring openend bend;
(5) back-up ring is heat-treated eliminate stress;
(6) back-up ring is carried out to the picture check, defective back-up ring is carried out deflection eliminate;
(7) carry out polishing, cleaning to having inspected qualified back-up ring;
(8) back-up ring after polishing, the cleaning is oiled;
(9) pack at last.
2. retaining ring for piston pin processing technology according to claim 1; It is characterized in that making the back-up ring image of a standard according to the designing requirement of back-up ring; Adopt projector apparatus that back-up ring is carried out projection and form projected image and compare, judge whether back-up ring is qualified with the back-up ring image of standard.
3. retaining ring for piston pin processing technology according to claim 2 is characterized in that the back-up ring image of standard is divided into front view and side view, and the projected image that projector apparatus produces is divided into orthographic projection and lateral projection, and is corresponding one by one according to the orientation in the time of check.
4. according to claim 1 or 2 or 3 described retaining ring for piston pin processing technologys, it is characterized in that heat treatment is tempering in the continuous tempering furnace of net belt type, temperature is at 200-400 ℃, and the time was controlled at 30-50 minute.
5. according to claim 1 or 2 or 3 described retaining ring for piston pin processing technologys, it is characterized in that cleaning and adopt ultrasonic cleaning process, when the part cleannes are not up to standard, adopt finishing process to make it up to standard.
6. according to claim 1 or 2 or 3 described retaining ring for piston pin processing technologys, the employing antirust oil that it is characterized in that oiling carries out again antirust oil to back-up ring simultaneously and cleans.
7. according to claim 1 or 2 or 3 described retaining ring for piston pin processing technologys, it is characterized in that the periphery of mandrel is provided with the recessed district of horizontal arc one, the position of entrance hole and the recessed district of the arc of level flush.
8. according to claim 1 or 2 or 3 described retaining ring for piston pin processing technologys, it is characterized in that shaping jig moves the employing roll mode on workbench, workbench is provided with scale, and shaping jig is connected with and moves up and down device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110067268 CN102275061B (en) | 2011-03-21 | 2011-03-21 | Process for machining check ring of piston pin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110067268 CN102275061B (en) | 2011-03-21 | 2011-03-21 | Process for machining check ring of piston pin |
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| Publication Number | Publication Date |
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| CN102275061A CN102275061A (en) | 2011-12-14 |
| CN102275061B true CN102275061B (en) | 2012-12-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201110067268 Expired - Fee Related CN102275061B (en) | 2011-03-21 | 2011-03-21 | Process for machining check ring of piston pin |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102641975A (en) * | 2012-05-11 | 2012-08-22 | 乐清市力升弹簧有限公司 | Production method of C-shaped snap spring and special device for implementing production method |
| CN104289871A (en) * | 2014-09-16 | 2015-01-21 | 萍乡市德博科技发展有限公司 | Method for machining sealing rings |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101352794A (en) * | 2007-07-26 | 2009-01-28 | 联钢紧固系统（上海）有限公司 | Method for processing high-cleaning high-accurate computer hard disc balance ring |
| CN100563912C (en) * | 2007-10-18 | 2009-12-02 | 常州市铭锦弹簧有限公司 | Big linear diameter spring cold coiling processing technics |
| GB2459480B8 (en) * | 2008-04-23 | 2013-07-24 | Denso Corp | A heat exchanger, a method of making a heat exchanger and a kit of parts for making a heat exchanger |
| DE102008035186A1 (en) * | 2008-07-28 | 2010-02-04 | Elringklinger Ag | Form sealing ring e.g. C-shaped sealing ring, manufacturing method for sealing arrangement of exhaust gas guiding pipelines in internal combustion engine, involves bending strip or rod-like profile body to develop ring form or spiral form |
| CN101508024B (en) * | 2009-03-13 | 2011-11-09 | 洛阳轴研科技股份有限公司 | Processing method of split retainer |
| JP2011036949A (en) * | 2009-08-10 | 2011-02-24 | Osg Corp | Method for manufacturing die steel tool, and form rolling die |
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Process for machining check ring of piston pin Effective date of registration: 20150811 Granted publication date: 20121226 Pledgee: Hengfeng bank, Limited by Share Ltd, Hangzhou Chengdong subbranch Pledgor: Qianjiang Spring Co., Ltd. Registration number: 2015330000038 |
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| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20160119 Granted publication date: 20121226 Pledgee: Hengfeng bank, Limited by Share Ltd, Hangzhou Chengdong subbranch Pledgor: Qianjiang Spring Co., Ltd. Registration number: 2015330000038 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Process for machining check ring of piston pin Effective date of registration: 20160122 Granted publication date: 20121226 Pledgee: Hengfeng bank, Limited by Share Ltd, Hangzhou Chengdong subbranch Pledgor: Qianjiang Spring Co., Ltd. Registration number: 2016330000002 |
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| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121226 Termination date: 20190321 |