CN103341737A - Machining method for improving coaxiality of special-shaped cavity and internal spline of start guide cylinder - Google Patents
Machining method for improving coaxiality of special-shaped cavity and internal spline of start guide cylinder Download PDFInfo
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- CN103341737A CN103341737A CN2013102914525A CN201310291452A CN103341737A CN 103341737 A CN103341737 A CN 103341737A CN 2013102914525 A CN2013102914525 A CN 2013102914525A CN 201310291452 A CN201310291452 A CN 201310291452A CN 103341737 A CN103341737 A CN 103341737A
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Abstract
The invention discloses a machining method for improving the coaxiality of a special-shaped cavity and an internal spline of a start guide cylinder. The method includes the following steps: (1) sawing materials, (2) annealing, (3) making blank, (4) carrying out shot blasting and phosphorization and saponification treatment, (5) forward extruding, (6) jumping-up, (7) extruding the special-shaped curved-surface cavity and a guide hole backward, and (8) rotationally extruding the spiral internal spline based on the guide hole. The step (7) of extruding the special-shaped curved-surface cavity and the guide hole backward is that at the moment of forming the special-shaped curved-surface cavity through backward extrusion, forming of the guide hole of a punch is completed when the spiral inner spline on the lower portion of the start guide cylinder is formed through rotational extrusion. The step (8) of rotationally extruding the spiral internal spline based on the guide hole is that the rotational extrusion punch completes extrusion forming of the spiral inner spline through a guiding role of the guide hole. The method can improve the coaxiality of the special-shaped cavity and the internal spline of the start guide cylinder during the forming process.
Description
Technical field
The present invention relates to the metal precision forging technology, be specifically related to a kind of processing method that improves the special-shaped chamber of starting guide cylinder and internal spline axiality, belong to the part processing technical field.
Background technology
The automobile start guide cylinder is the vital part in the automobile starter, and is complex-shaped, the axiality requirement of the special-shaped curved die cavity in required precision height, especially top and bottom internal helix spline.Existing processing method (referring to: Meng Xianling, the study of the Song Dynasty advances. the clean Research of Forming Technology of starting guide cylinder, the 3rd national precision forging scientific seminar's collection of thesis [C], Yancheng, Jiangsu, 2008.12 37-40.) be: lubricate softening processings of (1) blanking, (2), the processing of (3) descale, (4) lubricated, (5) jumping-up base, (6), the special-shaped curved clean shaping in (7) top, (8) machined endoporus, (9) lubricated, (10) internal helix spline are shaped only.Yet, there are the following problems owing to above-mentioned technology: the benchmark when the special-shaped curved die cavity in automobile start guide cylinder top is shaped is step (5) jumping-up base upper back cylindrical axis, and the benchmark of bottom internal helix spline when being shaped only is the axis of step (8) machined endoporus, because both benchmark are inconsistent, so the axiality of the special-shaped curved die cavity in automobile start guide cylinder top and bottom internal helix spline requires to be difficult to control in general requiring in the φ 0.012mm.
Summary of the invention
Technical problem to be solved by this invention provides a kind of processing method that improves the special-shaped chamber of starting guide cylinder and internal spline axiality.The technical solution used in the present invention is: a kind of processing method that improves the special-shaped chamber of starting guide cylinder and internal spline axiality.Comprise the steps: that (1) saw material, (2) annealing, (3) base, (4) ball blast are just crowded with phospholeum processing, (5), (6) jumping-up, (7) anti-crowded special-shaped curved die cavity and pilot hole, (8) rotate the extrusion spiral internal spline based on pilot hole.
Describedly anti-squeeze special-shaped curved die cavity and pilot hole is by reverse extruding, finish the precision form of pilot hole when realizing the special-shaped curved die cavity precision form of automobile start guide cylinder.
Described is to cooperate with the pilot hole that step (7) forms by rotation drift head targeting part based on pilot hole rotation extrusion spiral internal spline, realizes the precision form of internal helix spline through the rotation extruding.
The invention has the beneficial effects as follows: by the improvement to existing automobile start guide cylinder processing technology, make that the benchmark of automobile start guide cylinder bottom internal helix spline shaping processing is consistent with the axis of the special-shaped curved die cavity in automobile start guide cylinder top.Effectively improved the axiality that the special-shaped curved die cavity in automobile start guide cylinder top and bottom internal helix spline add man-hour.Evidence: adopt the part of the inventive method processing, the axiality of the special-shaped curved die cavity in its top and bottom internal helix spline can be reduced in the φ 0.012mm.
Description of drawings
Fig. 1 process chart of the present invention.
Fig. 2 embodiment of the invention shape of product change procedure figure.
Fig. 3 rotates drift.
The special-shaped curved die cavity of Fig. 4 instead squeezes drift.
The specific embodiment
Process with 93 automobile start guide cylinders is example, and its technological process is:
1, saw material, selecting diameter is the hot rolling round bar of φ 50mm, and material trademark is 20CrMo, and the control cutting length is between the 52mm-53mm.
2, annealing.To saw 780 ℃ of insulations of material heating 5-8 hour, be cooled to 710 ℃, be incubated 5-8 hour, be chilled to 350 ℃ of air coolings of coming out of the stove with stove.
3, base.After heart carrier being contained in cylindrical one end of workpiece, with top two centre bores that withstand, rough turn outside diameter is between the φ 48.10mm-φ 48.25mm and end-beveling 2 * 45
, reverse end for end heart carrier is contained in the other end of cylindrical of workpiece again, with top two centre bores that withstand, rough turn other end outside diameter is between the φ 48.10mm-φ 48.25mm and end-beveling 2 * 45
, cylindrical length is controlled between 51.0mm-51.3mm.
4, conventional ball blast and phospholeum processing are to improve surface quality and lubricated.
5, just crowded.Upper end outside diameter control is between φ 48.5mm-φ 48.8mm, and length is controlled between 37.0mm-38.5mm.Lower end outside diameter control is between φ 34.4mm-φ 34.7mm, and length is determined by blank.
6, jumping-up.Guarantee that blank upper end outside diameter jumping-up is between the φ 59.5mm-φ 59.8mm.
7, instead squeeze special-shaped curved die cavity and pilot hole.The pilot hole diameter is φ 18mm, and the degree of depth is 12mm.
8, based on pilot hole rotation extrusion spiral internal spline.Rotation drift targeting part inserts in the pilot hole, and is descending with the helical angle rotation, until being extruded onto required internal helix spline effective length greater than 28mm.
Claims (7)
1. one kind is improved the processing method of starting the special-shaped chamber of guide cylinder and internal spline axiality, comprise the steps: that (1) saw material, (2) annealing, (3) base, (4) ball blast are just crowded with phospholeum processing, (5), (6) jumping-up, (7) anti-crowded special-shaped curved die cavity and pilot hole, (8) rotate the extrusion spiral internal spline based on pilot hole, described step (7) is instead squeezed special-shaped curved die cavity and pilot hole is: by reverse extruding, finish the precision form of pilot hole when realizing the special-shaped curved die cavity precision form of automobile start guide cylinder; Described step (8) based on pilot hole rotation extrusion spiral internal spline is: cooperate with the pilot hole that step (7) forms by rotation drift head targeting part, realize the precision form of internal helix spline through the rotation extruding.
2. according to right 1 described processing method, it is characterized in that: described step (7) is instead squeezed in special-shaped curved die cavity and the pilot hole, instead squeezes drift and is made up of special-shaped curved die cavity shaped portion and pilot hole shaped portion.
3. according to right 1, right 2 described processing methods, it is characterized in that: it is coaxial with the pilot hole shaped portion instead to squeeze the special-shaped curved die cavity shaped portion of drift.
4. according to right 1 described processing method, it is characterized in that: described step (8) is based in the pilot hole rotation extrusion spiral internal spline, and the rotation drift is made up of internal helix spline shaped portion and targeting part.
5. according to right 1,4 described processing methods, it is characterized in that: rotation drift internal helix spline shaped portion and targeting part are coaxial.
6. according to right 1,4,5 described processing methods, it is characterized in that: rotation drift targeting part inserts in the pilot hole, and is descending with the helical angle rotation, until being extruded onto required internal helix spline effective length.
7. according to right 1,2,3,4,5,6 described processing methods, it is characterized in that: it is identical with rotation drift targeting part diameter instead to squeeze drift pilot hole shaped portion diameter, and numerical value is less than the tip diameter 0.2mm-0.5mm of internal helix spline.
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| CN201310291452.5A CN103341737B (en) | 2013-07-12 | 2013-07-12 | A kind of processing method improving the special-shaped chamber of starting guide cylinder and internal spline coaxiality |
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| CN201310291452.5A CN103341737B (en) | 2013-07-12 | 2013-07-12 | A kind of processing method improving the special-shaped chamber of starting guide cylinder and internal spline coaxiality |
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| CN103341737A true CN103341737A (en) | 2013-10-09 |
| CN103341737B CN103341737B (en) | 2015-08-05 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103624502A (en) * | 2013-12-04 | 2014-03-12 | 江苏威鹰机械有限公司 | Cold-forging plastic molding technology of brake piston |
| CN103639675A (en) * | 2013-12-03 | 2014-03-19 | 盐城工学院 | Machining method and forming die of overrunning clutch inner raceway surface |
| CN104148888A (en) * | 2014-06-30 | 2014-11-19 | 宁波惠山汽配制造有限公司 | Process for cold extrusion forming of one-way device spline sleeve |
| CN105478514A (en) * | 2016-01-08 | 2016-04-13 | 盐城工学院 | Compound extrusion punch pin for machining automobile starting guide cylinder |
| CN105642803A (en) * | 2016-01-08 | 2016-06-08 | 盐城工学院 | Combined extrusion machining method for automobile starting guide cylinder |
| CN108817866A (en) * | 2018-08-01 | 2018-11-16 | 宁波普泽机电有限公司 | A kind of processing technology of one-way-sleeve |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103639675A (en) * | 2013-12-03 | 2014-03-19 | 盐城工学院 | Machining method and forming die of overrunning clutch inner raceway surface |
| CN103639675B (en) * | 2013-12-03 | 2016-07-06 | 盐城工学院 | The processing method of curve surface of raceway and shaping dies in freewheel clutch |
| CN103624502A (en) * | 2013-12-04 | 2014-03-12 | 江苏威鹰机械有限公司 | Cold-forging plastic molding technology of brake piston |
| CN104148888A (en) * | 2014-06-30 | 2014-11-19 | 宁波惠山汽配制造有限公司 | Process for cold extrusion forming of one-way device spline sleeve |
| CN105478514A (en) * | 2016-01-08 | 2016-04-13 | 盐城工学院 | Compound extrusion punch pin for machining automobile starting guide cylinder |
| CN105642803A (en) * | 2016-01-08 | 2016-06-08 | 盐城工学院 | Combined extrusion machining method for automobile starting guide cylinder |
| CN105642803B (en) * | 2016-01-08 | 2017-06-27 | 盐城工学院 | A kind of Compound Extrusion processing method of automobile start guide cylinder |
| CN108817866A (en) * | 2018-08-01 | 2018-11-16 | 宁波普泽机电有限公司 | A kind of processing technology of one-way-sleeve |
| CN108817866B (en) * | 2018-08-01 | 2021-04-02 | 宁波普泽机电有限公司 | Machining process of one-way sleeve |
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| CN103341737B (en) | 2015-08-05 |
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Effective date of registration: 20181212 Address after: 233010 Pioneering Building 316, Huineng Small and Micro Enterprises Pioneering Center, 1750 Shengli West Road, Yuhui District, Bengbu City, Anhui Province Patentee after: Bengbu Dingrong Science and Technology Information Consulting Co., Ltd. Address before: 224051 new campus of Yancheng Institute Of Technology, 9 hope road, Yancheng City, Jiangsu. Patentee before: Yangcheng Institute of Technology |
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Effective date of registration: 20190605 Address after: 056000 No. 4 Handan Steel Road, Fuxing District, Handan City, Hebei Province Patentee after: Handan Taipute Auto Parts Manufacturing Co., Ltd. Address before: 233010 Pioneering Building 316, Huineng Small and Micro Enterprises Pioneering Center, 1750 Shengli West Road, Yuhui District, Bengbu City, Anhui Province Patentee before: Bengbu Dingrong Science and Technology Information Consulting Co., Ltd. |