CN102814435A - Method for roll forming spline shaft by medium-frequency and high-frequency sensing heating - Google Patents
Method for roll forming spline shaft by medium-frequency and high-frequency sensing heating Download PDFInfo
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- CN102814435A CN102814435A CN2012103051449A CN201210305144A CN102814435A CN 102814435 A CN102814435 A CN 102814435A CN 2012103051449 A CN2012103051449 A CN 2012103051449A CN 201210305144 A CN201210305144 A CN 201210305144A CN 102814435 A CN102814435 A CN 102814435A
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Abstract
一种中高频感应加热滚轧成形花键轴的方法，先装夹工件，对工件一端成形花键段表面进行加热，由滚轧模具完成该段花键的成形，然后工件掉头重新装夹，对工件另一端成形花键段表面进行加热，然后由滚轧模具完成该段花键的成形，最后卸料，中高频感应加热器在滚轧模具和工件装夹位置之间，中高频感应加热器仅对将发生塑性变形的表面局部区域加热，加热后工件可快速送进至滚轧模具工作区域，本发明具有花键成形力小、节省能源、能够加材料变形抗力大和大模数花键类零件、成形精度和表面质量高、生产效率高、加工范围广等优点。
A method for rolling and forming a spline shaft by medium and high frequency induction heating. First, the workpiece is clamped, and the surface of the spline section at one end of the workpiece is heated. The rolling die completes the forming of the spline, and then the workpiece is turned around and re-clamped. The surface of the forming spline section at the other end is heated, and then the rolling die completes the forming of the spline section, and finally unloads the material. The medium and high frequency induction heater is between the rolling mold and the clamping position of the workpiece. The medium and high frequency induction heater is only for the The local area of the surface where plastic deformation occurs is heated, and the workpiece can be quickly sent to the working area of the rolling die after heating. The invention has the advantages of small spline forming force, energy saving, and can be added to spline parts with large deformation resistance and large modulus. It has the advantages of high precision and surface quality, high production efficiency and wide processing range.
Description
Technical field
The invention belongs to advanced material forming technique field, be specifically related to a kind of method of medium-high frequency eddy-current heating rollforming splined shaft.
Background technology
Spline is to be used for the vital part of transmission power and moment of torsion in the mechanical system, and splined is used very extensive in automobile and various vehicle and equipment manufacture as a kind of linking intensity height, compact conformation, connecting mode that reliability is high.
Along with rapid development of automobile industry, the demand of high strength high accuracy spline increases day by day and instructions for use improves constantly, and the processing technology and the equipment of conventional spline has been proposed new challenge.The processing technology of spline mainly is divided into traditional cut and Plastic Forming processing; Shortcomings such as traditional spline cutting technology exists that cut intensity is high, productivity ratio is low, mechanical performance and surface quality difference; And spline rollforming technology ELEMENTARY INTRODUCTION TO NON category; Have high, the plurality of advantages such as shaping load is little, workpiece size stable accuracy, good product performance of production efficiency height, stock utilization, in the involute spline processing and manufacturing, be used widely.Yet the high strength steel resistance of deformation under the room temperature is big, makes big, the material flow difficulties of high strength steel spline cold rolling shaping load, and former transmission system and integral rigidity also face great challenge.
Warm working has been concentrated the advantage of cold forming and heat forming technology, not only can effectively reduce resistance of deformation, improves the metal material plastic forming ability; And avoided the hot forming energy consumption big, be prone to have produced overheated, oxidation, decarburization, and shortcoming such as allowance is big; Can obtain better products surface quality and high dimension precision.At present; Because the plurality of advantages of warm working; Numerous scholars have carried out extensive studies to this technology; Be applied to a lot of effects that a merging has obtained satisfaction of producing, for example warm drawing and forming, warm-extrusion forming, warm forging precision form etc., but also Warm Forming Technology is not applied in the plastic working technique of spline rolling.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art; The object of the present invention is to provide a kind of method of medium-high frequency eddy-current heating rollforming splined shaft; The spline shaping load is little; Material flowability can be good, can big and the big modulus spline of rapidoprint resistance of deformation class part, have forming accuracy and surface quality height, production efficiency is high, the range of work is wide, the advantage of highly versatile.
In order to achieve the above object, the technical scheme taked of the present invention is:
A kind of method of medium-high frequency eddy-current heating rollforming splined shaft comprises the steps:
2.1, workpiece 2 is to rolling die 5 direction feedings; Shaping spline segment a gets in the medium-high frequency induction heater 4 on the workpiece 2; Medium-high frequency induction heater 4 is configured between extruding rolling die 5 and workpiece 2 clamping positions, and medium-high frequency induction heater 4 length vertically is not less than the length of spline segment a;
2.2, medium-high frequency induction heater 4 starts working, the surperficial zone of heating depth delta of shaping spline segment a should satisfy formula: Δ=r on the workpiece 2
Z-r
f+ (1.5 ~ 2.0) h;
In the formula: r
ZBe blank radius before the zone rolling of blank spline; r
fBe shaping spline tooth root radius; H is a shaping spline tooth overall height;
2.3, the temperature on the workpiece 2 in the surperficial zone of heating depth delta of shaping spline segment a reaches predetermined forming temperature T; Medium-high frequency induction heater 4 quits work; Forming temperature T is more than deformable material blue shortness district temperature, fully carries out the following warm working temperature of temperature of crystallization again; Or the hot forming temperature more than the temperature of fully carrying out crystallization again;
When rolling die 5 was made radial feed, rolling die 5 working surfaces all were complete profiles of tooth; During the no radial feed of rolling die 5, rolling die 5 working surfaces are made up of imperfect parts of tooth, complete parts of tooth that no profile of tooth part, tooth depth increase gradually,
Rolling die 5 maximum tooth tip circle place peripheral speed scopes are 8 ~ 10m/min; Workpiece 2 revolutions, the radial feed weight range of rolling die 5 is 0.05 ~ 0.15mm;
Step 6, shaping spline segment b surface local heating on the workpiece 2 is specially:
6.1, workpiece 2 is to rolling die 5 direction feedings; Shaping spline segment b gets in the medium-high frequency induction heater 4 on the workpiece 2; Medium-high frequency induction heater 4 is configured between extruding rolling die 5 and workpiece 2 clamping positions, and medium-high frequency induction heater 4 length vertically is not less than the length of spline segment b;
6.2, medium-high frequency induction heater 4 starts working, the surperficial zone of heating depth delta of shaping spline segment b should satisfy formula Δ=r on the workpiece 2
Z-r
f+ (1.5 ~ 2.0) h;
6.3, the temperature on the workpiece in the surperficial zone of heating depth delta of shaping spline segment b reaches predetermined forming temperature T; Medium-high frequency induction heater 4 quits work; Forming temperature T is more than deformable material blue shortness district temperature, fully carries out the following warm working temperature of temperature of crystallization again; Or the hot forming temperature more than the temperature of fully carrying out crystallization again;
Step 7, shaping spline segment b rollforming spline on the workpiece 2 is specially:
When rolling die 5 was made radial feed, rolling die 5 working surfaces all were complete profiles of tooth; During the no radial feed of rolling die 5, rolling die 5 working surfaces are made up of imperfect parts of tooth, complete parts of tooth that no profile of tooth part, tooth depth increase gradually,
Rolling die 5 maximum tooth tip circle place peripheral speed scopes are 8 ~ 10m/min; Workpiece 2 revolutions, the radial feed weight range of rolling die 5 is 0.05 ~ 0.15mm;
Step 8, workpiece 2 by preceding top 1 and back centre 3 clamp and oppositely withdraw from discharging simultaneously.
The present invention organically combines medium-high frequency eddy-current heating and spline rollforming, realizes rollforming high strength steel splined shaft; The medium-high frequency induction heater is between rolling die and clamping workpiece position, and heating back workpiece can be sent to the rolling die working region fast; The medium-high frequency induction heater only to the surface local zone heating of plastic deformation will take place, is saved the energy; Can reduce the material deformation drag, improve the metal plastic deformation ability; Big and the big modulus spline of machinable material resistance of deformation.
Description of drawings
Fig. 1 is a flow chart of the present invention.
Fig. 2 connects sketch map for equipment therefor of the present invention.
Fig. 3 is the workpiece 2 and rolling die 5 layouts and motion signal of the embodiment of the invention one.
Fig. 4 is the blank structure sketch map of the embodiment of the invention one.
Fig. 5 is the workpiece 2 and rolling die 5 layouts and motion signal of the embodiment of the invention two.
Fig. 6 is the blank structure sketch map of the embodiment of the invention two.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is done detailed description.
Embodiment one
With reference to Fig. 1, a kind of method of medium-high frequency eddy-current heating rollforming splined shaft comprises the steps:
2.1, workpiece 2 is to rolling die 5 direction feedings; Shaping spline segment a gets in the medium-high frequency induction heater 4 on the workpiece 2; With reference to Fig. 2; Medium-high frequency induction heater 4 is between extruding rolling die 5 and workpiece 2 clamping positions, and medium-high frequency induction heater 4 length vertically is not less than the length of spline segment a;
2.2, medium-high frequency induction heater 4 starts working, the surperficial zone of heating depth delta of shaping spline segment a should satisfy formula Δ=r on the workpiece 2
Z-r
f+ (1.5 ~ 2.0) h;
In the formula: r
ZBe blank radius before the zone rolling of blank spline; r
fBe shaping spline tooth root radius; H is a shaping spline tooth overall height;
2.3, the temperature on the workpiece 2 in the surperficial zone of heating depth delta of shaping spline segment a reaches predetermined forming temperature T; Medium-high frequency induction heater 4 quits work; Forming temperature T is more than deformable material blue shortness district temperature; Fully carry out the following warm working temperature of temperature of crystallization again, be specially 700 ℃;
Rolling die 5 maximum tooth tip circle place peripheral speeds are 8.5m/min; Workpiece 2 revolutions, the radial feeds of rolling die 5 are 0.05mm;
Step 6, shaping spline segment b surface local heating on the workpiece 2 is specially:
6.1, workpiece 2 is to rolling die 5 direction feedings; Shaping spline segment b gets in the medium-high frequency induction heater 4 on the workpiece 2; Medium-high frequency induction heater 4 is configured between extruding rolling die 5 and workpiece 2 clamping positions, and medium-high frequency induction heater 4 length vertically is not less than the length of spline segment b;
6.2, medium-high frequency induction heater 4 starts working, the surperficial zone of heating depth delta of shaping spline segment b should satisfy formula Δ=r on the workpiece 2
Z-r
f+ (1.5 ~ 2.0) h;
6.3, the temperature on the workpiece in the surperficial zone of heating depth delta of shaping spline segment b reaches predetermined forming temperature T; Medium-high frequency induction heater 4 quits work; Forming temperature T is more than deformable material blue shortness district temperature; Fully carry out the following warm working temperature of temperature of crystallization again, be specially 700 ℃;
Step 7, shaping spline segment b rollforming spline on the workpiece 2 is specially:
Rolling die 5 maximum tooth tip circle place peripheral speeds are 8.5m/min; Workpiece 2 revolutions, the radial feeds of rolling die 5 are 0.05mm/r;
Step 8, workpiece 2 by preceding top 1 and back centre 3 clamp and oppositely withdraw from discharging simultaneously.
Embodiment two:
The workpiece 2 of a present embodiment formed thereby only end all has the shaping spline segment, and workpiece 2 materials adopt the 42CrMo high strength steel, and two rolling dies 5 rotate two rolling die 5 no radial feeds synchronously in the same way.
With reference to Fig. 1, a kind of method of medium-high frequency eddy-current heating rollforming splined shaft comprises the steps:
2.1, workpiece 2 is to rolling die 5 direction feedings; Shaping spline segment a gets in the medium-high frequency induction heater 4 on the workpiece 2; With reference to Fig. 2; Medium-high frequency induction heater 4 is between extruding rolling die 5 and workpiece 2 clamping positions, and medium-high frequency induction heater 4 length vertically is not less than the length of spline segment a;
2.2, medium-high frequency induction heater 4 starts working, the surperficial zone of heating depth delta of shaping spline segment a should satisfy formula Δ=r on the workpiece 2
Z-r
f+ (1.5 ~ 2.0) h;
In the formula: r
ZBe blank radius before the zone rolling of blank spline; r
fBe shaping spline tooth root radius; H is a shaping spline tooth overall height;
2.3, the temperature on the workpiece 2 in the surperficial zone of heating depth delta of shaping spline segment a reaches predetermined forming temperature T; Medium-high frequency induction heater 4 quits work; Forming temperature T is more than deformable material blue shortness district temperature; Fully carry out the following warm working temperature of temperature of crystallization again, be specially 700 ℃;
Rolling die 5 maximum tooth tip circle place peripheral speeds are 9m/min;
Claims (1)
1. the method for a medium-high frequency eddy-current heating rollforming splined shaft is characterized in that, comprises the steps:
Step 1; Clamping workpiece (2); Workpiece (2) is clamped by preceding top (1) and back centre (3), the axis that makes workpiece (2) with the axis of two rolling dies (5) on same horizontal plane, two rolling dies (5) parallel axes; Be symmetrically distributed in workpiece (2) both sides, workpiece (2) is gone up shaping spline segment a near rolling die (5);
Step 2, workpiece (2) go up the heating of shaping spline segment a surface local, are specially:
2.1, workpiece (2) is to rolling die (5) direction feeding; Workpiece (2) is gone up shaping spline segment a and is got in the medium-high frequency induction heater (4); Medium-high frequency induction heater (4) is configured between extruding rolling die (5) and workpiece (2) clamping position, and medium-high frequency induction heater (4) length vertically is not less than the length of spline segment a;
2.2, medium-high frequency induction heater (4) starts working, the surperficial zone of heating depth delta that workpiece (2) is gone up shaping spline segment a should satisfy formula Δ=r
Z-r
f+ (1.5 ~ 2.0) h;
In the formula: r
ZBe blank radius before the zone rolling of blank spline; r
fBe shaping spline tooth root radius; H is a shaping spline tooth overall height;
2.3, the temperature that goes up in the surperficial zone of heating depth delta of shaping spline segment a of workpiece (2) reaches predetermined forming temperature T; Medium-high frequency induction heater (4) quits work; Forming temperature T is more than deformable material blue shortness district temperature, fully carries out the following warm working temperature of temperature of crystallization again; Or the hot forming temperature more than the temperature of fully carrying out crystallization again;
Step 3, workpiece (2) is gone up shaping spline segment a rollforming spline, is specially:
Workpiece (2) is to rolling die (5) direction feeding; Shaping spline segment a gets into rolling die (5) working range on the workpiece 2; Two rolling dies (5) rotate synchronously in the same way; Two rolling dies (5) are made radial feed simultaneously or are not had radial feed, go up the rollforming of shaping spline segment a until accomplishing workpiece (2)
Rolling die (5) is when making radial feed, and rolling die (5) working surface all is complete profile of tooth; During the no radial feed of rolling die (5), rolling die (5) working surface is made up of imperfect parts of tooth, complete parts of tooth that no profile of tooth part, tooth depth increase gradually,
Rolling die (5) maximum tooth tip circle place peripheral speed scope is 8 ~ 10m/min; Workpiece (2) revolution, the radial feed weight range of rolling die (5) is 0.05 ~ 0.15mm;
Step 4, workpiece (2) are clamped by preceding top (1) and back centre (3) and oppositely withdraw from simultaneously, if on the workpiece (2) shaping spline segment a is only arranged, and then directly discharging; Have shaping spline segment b if workpiece (2) is gone up the other end, then execution in step 5 is to step 8;
Step 5 turns around workpiece (2), clamping workpiece (2) again,
Workpiece (2) is clamped by preceding top (1) and back centre (3); The axis that makes workpiece (2) with the axis of two rolling dies (5) on same horizontal plane; Two rolling dies (5) parallel axes; Be symmetrically distributed in workpiece (2) both sides, workpiece (2) is gone up shaping spline segment b near rolling die (5);
Step 6, workpiece (2) go up the heating of shaping spline segment b surface local, are specially:
6.1, workpiece (2) is to rolling die (5) direction feeding; Workpiece (2) is gone up shaping spline segment b and is got in the medium-high frequency induction heater (4); Medium-high frequency induction heater (4) is configured between extruding rolling die (5) and workpiece (2) clamping position, and medium-high frequency induction heater (4) length vertically is not less than the length of spline segment b;
6.2, medium-high frequency induction heater (4) starts working, the surperficial zone of heating depth delta that workpiece (2) is gone up shaping spline segment b should satisfy formula Δ=r
Z-r
f+ (1.5 ~ 2.0) h;
6.3, the temperature on the workpiece in the surperficial zone of heating depth delta of shaping spline segment b reaches predetermined forming temperature T; Medium-high frequency induction heater (4) quits work; Forming temperature T is more than deformable material blue shortness district temperature, fully carries out the following warm working temperature of temperature of crystallization again; Or the hot forming temperature more than the temperature of fully carrying out crystallization again;
Step 7, workpiece (2) is gone up shaping spline segment b rollforming spline, is specially:
Workpiece (2) is to rolling die (5) direction feeding; Workpiece (2) is gone up shaping spline segment b and is got into rolling die (5) working range; Two rolling dies (5) rotate synchronously in the same way; Two rolling dies (5) are made radial feed simultaneously or are not had radial feed, go up the rollforming of shaping spline segment b until accomplishing workpiece (2)
Rolling die (5) is when making radial feed, and rolling die (5) working surface all is complete profile of tooth; During the no radial feed of rolling die (5), rolling die (5) working surface is made up of imperfect parts of tooth, complete parts of tooth that no profile of tooth part, tooth depth increase gradually,
Rolling die (5) maximum tooth tip circle place peripheral speed scope is 8 ~ 10m/min; Workpiece (2) revolution, the radial feed weight range of rolling die (5) is 0.05 ~ 0.15mm;
Step 8, workpiece (2) are clamped by preceding top (1) and back centre (3) and oppositely withdraw from discharging simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210305144.9A CN102814435B (en) | 2012-08-24 | 2012-08-24 | Method for roll forming spline shaft by medium-frequency and high-frequency sensing heating |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210305144.9A CN102814435B (en) | 2012-08-24 | 2012-08-24 | Method for roll forming spline shaft by medium-frequency and high-frequency sensing heating |
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| Publication Number | Publication Date |
|---|---|
| CN102814435A true CN102814435A (en) | 2012-12-12 |
| CN102814435B CN102814435B (en) | 2014-07-23 |
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|---|---|---|---|
| CN201210305144.9A Expired - Fee Related CN102814435B (en) | 2012-08-24 | 2012-08-24 | Method for roll forming spline shaft by medium-frequency and high-frequency sensing heating |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108188313A (en) * | 2017-11-29 | 2018-06-22 | 江阴市永兴机械制造有限公司 | A kind of secondary cold extrusion technology of large-diameter outer spline |
| CN111558685A (en) * | 2020-05-14 | 2020-08-21 | 西安交通大学 | Method for forging and rolling composite forming of large-tooth high worm and radial forging die |
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|---|---|---|---|---|
| EP0061958A1 (en) * | 1981-03-17 | 1982-10-06 | Escofier Technologie (SAS) | Adjustment device for the accurate relative angular positioning of shafts driving cold-forming rolls |
| JPS63157736A (en) * | 1986-12-22 | 1988-06-30 | High Frequency Heattreat Co Ltd | Rolling method for tooth profile member |
| CN2531899Y (en) * | 2001-10-30 | 2003-01-22 | 宋玉泉 | Continuous lcoal plasticity precise moulding device for car axle shaft gear |
| US20040173000A1 (en) * | 2001-08-07 | 2004-09-09 | Philippe Monot | Cold forming tool, machine and method |
| CN1623724A (en) * | 2003-12-03 | 2005-06-08 | 大同特殊钢株式会社 | Mechanical structural shaft component and method of manufacturing the same |
| CN101652197A (en) * | 2007-03-30 | 2010-02-17 | 住友金属工业株式会社 | Cold-finished seamless steel pipe for integrally molded drive shaft, drive shaft using the pipe, and method for manufacturing the cold-finished seamless steel pipe |
-
2012
- 2012-08-24 CN CN201210305144.9A patent/CN102814435B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0061958A1 (en) * | 1981-03-17 | 1982-10-06 | Escofier Technologie (SAS) | Adjustment device for the accurate relative angular positioning of shafts driving cold-forming rolls |
| JPS63157736A (en) * | 1986-12-22 | 1988-06-30 | High Frequency Heattreat Co Ltd | Rolling method for tooth profile member |
| US20040173000A1 (en) * | 2001-08-07 | 2004-09-09 | Philippe Monot | Cold forming tool, machine and method |
| CN2531899Y (en) * | 2001-10-30 | 2003-01-22 | 宋玉泉 | Continuous lcoal plasticity precise moulding device for car axle shaft gear |
| CN1623724A (en) * | 2003-12-03 | 2005-06-08 | 大同特殊钢株式会社 | Mechanical structural shaft component and method of manufacturing the same |
| CN101652197A (en) * | 2007-03-30 | 2010-02-17 | 住友金属工业株式会社 | Cold-finished seamless steel pipe for integrally molded drive shaft, drive shaft using the pipe, and method for manufacturing the cold-finished seamless steel pipe |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108188313A (en) * | 2017-11-29 | 2018-06-22 | 江阴市永兴机械制造有限公司 | A kind of secondary cold extrusion technology of large-diameter outer spline |
| CN111558685A (en) * | 2020-05-14 | 2020-08-21 | 西安交通大学 | Method for forging and rolling composite forming of large-tooth high worm and radial forging die |
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| Publication number | Publication date |
|---|---|
| CN102814435B (en) | 2014-07-23 |
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Effective date of registration: 20221014 Address after: 710115 Room 1035, 1st Floor, Jugou Hongde Building, No. 20, West China Innovation Port, Fengxi New Town, Xixian New District, Xi'an, Shaanxi Patentee after: Shaanxi Gezhi Jingcheng Intelligent Manufacturing Co.,Ltd. Address before: Beilin District Xianning West Road 710049, Shaanxi city of Xi'an province No. 28 Patentee before: XI'AN JIAOTONG University |
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