CN1095970A - Process for cold-drawing spline shaft - Google Patents
Process for cold-drawing spline shaft Download PDFInfo
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- CN1095970A CN1095970A CN 94104247 CN94104247A CN1095970A CN 1095970 A CN1095970 A CN 1095970A CN 94104247 CN94104247 CN 94104247 CN 94104247 A CN94104247 A CN 94104247A CN 1095970 A CN1095970 A CN 1095970A
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Abstract
The present invention relates to cold-drawn splined shaft technology, mainly is that existing processing automobile is improved with the technology of splined shaft.Adopt cold-drawing molding process processing splined shaft, its technological process is: annealing, pointing, pickling, cold-drawn moulding.Advantage of the present invention is, cold-drawing molding process is compared with the result of existing Milling Process splined shaft, stock utilization reaches 90% than higher, need not pursue the groove milling, the production efficiency height, surface roughness is better than the finished product of existing processes greatly, has reduced processing cost, has reduced waste of material, the comprehensive mechanical performance of product improves greatly, and the production technology of this ELEMENTARY INTRODUCTION TO NON splined shaft is worthy of popularization.
Description
The present invention relates to the cold-drawn forming technology, particularly cold-drawn shaping splined shaft technology.
Used splined shaft shapes and all adopts Milling Process technology on the existing motor turning transmission device, the technological requirement strictness, time-consuming, the utilization rate of material is not high, only be 60-70%, cause the processing cost height, and surface roughness requires to be difficult to guarantee, this arts demand improves, technology data from the relevant splined shaft processing of present understanding, do not find as yet that the cold-drawn forming technology is applied to process in the technological process of splined shaft and go that adopting the ELEMENTARY INTRODUCTION TO NON method to produce splined shaft in China still is a blank.
The objective of the invention is, improve, propose cold-drawn shaping splined shaft technology,, realize ELEMENTARY INTRODUCTION TO NON shaping splined shaft,, improve the mechanical performance and the end product quality of splined shaft to reduce cost to substitute Milling Process technology at the deficiencies in the prior art.
Technical solution of the present invention is to it is characterized in that adopted the cold-drawn forming technology to substitute the finished-product material of milling process processing splined shaft, its technological process is that annealing-pointing-pickling-cold-drawn is shaped.
Practical decarburized depth＜0.12 on the finished-product material surface after the annealing millimeter.
Workpiece after cold-drawn is shaped, through mid frequency induction hardening, its hardness is HRC
48-56, depth of hardening zone is the 1.5-3.0 millimeter.
Technological process of the present invention is that the physical property and the mechanical performance of the finished-product material (being blank) according to splined shaft is selected, taking annealing operation is to reduce the hardness of blank surface, in the effective range that guarantees the blank decarburized layer, make whole blank can adapt to cold drawing die, avoid damaging mould.The pointing operation is in order to make blank can enter the nib of cold drawing die easily, and the pincers car of being convenient to drawing machine is seized on both sides by the arms, satisfy the basic demand of cold-drawn forming technology, and pickling process is in order to remove the oxidation scurf on the workpiece blank surface after the annealing operation, guarantee the quality on workpiece blank surface, in case steel surface is pulled.It is to utilize particular manufacturing craft on drawing machine this workpiece finished product of splined shaft blank to be carried out drawing that cold-drawn is shaped, semi-finished product until the specification that pulls to regulation, cutting is finished product again, finished product is the splined shaft product after the assay was approved after mid frequency induction hardening is handled, because the teeth groove difference of splined shaft, the mould of employed splined shaft also just has different specifications, and these do not influence the present invention and adopt in the technological process of producing splined shaft and enforcement.
Advantage of the present invention is, cold-drawn forming technology technology is adopted in splined shaft processing, product quality will be significantly improved, compare with original Milling Process technology, the utilization rate of its material is up to 90%, the production efficiency height has reduced production cost, and all is significantly improved than Milling Process through product intensity, hardness and the comprehensive mechanical performance thereof that the cold-drawn forming technology is produced.The metal streamline of product can exempt from destruction, and than plasticity, the good toughness of the product of Milling Process.Its technological process is succinct, and is effective, is worthy of popularization.China is an automobile superpower, and automobile passes big to the consumption of the required splined shaft in driving section, and the reliability and the advantage that adopt the present invention to produce splined shaft will have reliable guarantee for manufacturer saves a large amount of steel and funds and product quality.
Fig. 1, the nib schematic diagram of the drawing particular manufacturing craft that the present invention adopts
Describe embodiments of the invention below in detail.
At first get workpiece blank ready by the size of processing request, it is the finished product material, what be ready to the regulation teeth groove pulls out drawing-die tool and drawing machine, the technological process that proposes according to the present invention again: annealing-pointing-pickling-cold-drawn forming process is implemented the technical solution that the present invention proposes, and substitutes traditional milling process processing splined shaft with the cold-drawn forming technology.Workpiece blank sent into carry out high annealing in the stove, take out cooling, whether the practical decarburized depth of check blank surface satisfies＜0.12 millimeter prescribed limit, change the blank that is up to the standards over to next procedure-pointing operation, the part of blank is used mechanical roll compacting, make it from the coarse to fine, reduced is to the nib that can enter special-purpose drawing mould, and size and the length that can be seized on both sides by the arms by the pincers car of drawing machine.Again workpiece blank is sent into descaling bath and carried out pickling, corrode by sulfuric acid or hydrochloric acid, remove the oxidation scurf or the impurity on workpiece blank surface, again that pickling is qualified workpiece blank is delivered in the drawing mould of the special-purpose specification on the drawing machine and is carried out powerful cold-drawn, the teeth groove that goes out to conform with the splined shaft of dimensional requirement until drawing comes, the splined shaft finished product cross-sectional profile of the nib of the special-purpose drawing mould that adopts in the cold-drawn forming process and required drawing is measure-alike again, according to the specification difference of splined shaft, select the drawing mould of different size.According to the size of workpiece, be processed into qualified splined shaft semi-finished product, semi-finished product are through Quenching Treatment, and check becomes qualified splined shaft product.Workpiece (being semi-finished product) after cold-drawn is shaped, through mid frequency induction hardening, its hardness is HRC
48-56, depth of hardening zone is the 1.5-3.0 millimeter, can reach the use standard of regulation.
Splined shaft after the existing Milling Process, its surperficial roughness is 6.3, is 1.6 and adopt the present invention through the roughness of the splined shaft surface of the work after the drawing, is better than using the splined shaft that mills the production of agent processing technology greatly.Cold-drawn shaping splined shaft has on average reduced about 20% than the comprehensive production cost of splined shaft that uses Milling Process, and product size and precision after cold-drawn is shaped all can reach the product design requirement, and greatly reduce raw-material consumption.Measure through related detection department, at rotating speed 30 γ/min, moment of torsion 50NM, sliding stroke 15mm, under the condition of sliding frequency 0.8/HZ, three test sample of censorship are the energy operate as normal all, after wear-out life reaches 225000 times, still intact, meet country fully for the specification requirement of automobile with steering transmission linkage.
Claims (4)
1, cold-drawn shaping splined shaft technology is characterized in that, has adopted the cold-drawn forming technology to substitute the finished-product material of milling process processing splined shaft, and its technological process is that annealing-pointing-pickling-cold-drawn is shaped.
2, cold-drawn shaping splined shaft technology according to claim 1 is characterized in that, practical decarburized depth＜0.12 on the finished-product material surface after the annealing millimeter.
3, cold-drawn shaping splined shaft technology according to claim 1 is characterized in that, the workpiece after cold-drawn is shaped, and through mid frequency induction hardening, its hardness is HRC
48-56, depth of hardening zone is the 1.5-3.0 millimeter.
4, the particular manufacturing craft of cold-drawn shaping splined shaft process using according to claim 1 is characterized in that, the splined shaft finished product cross-sectional profile of the mold hole dimension of the particular manufacturing craft that adopts in the cold-drawn forming process and institute's drawing is measure-alike.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94104247A CN1043015C (en) | 1994-04-29 | 1994-04-29 | Process for cold-drawing spline shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94104247A CN1043015C (en) | 1994-04-29 | 1994-04-29 | Process for cold-drawing spline shaft |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1095970A true CN1095970A (en) | 1994-12-07 |
| CN1043015C CN1043015C (en) | 1999-04-21 |
Family
ID=5031506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN94104247A Expired - Fee Related CN1043015C (en) | 1994-04-29 | 1994-04-29 | Process for cold-drawing spline shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1043015C (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101596675A (en) * | 2009-06-23 | 2009-12-09 | 诸城市同翔机械有限公司 | Manufacturing technology of spline shaft |
| CN101693259A (en) * | 2009-10-21 | 2010-04-14 | 衡阳康屹金属制品有限公司 | Production method and die of cold-drawing transmission shaft |
| CN102049569A (en) * | 2010-11-24 | 2011-05-11 | 沙市久隆汽车动力转向器有限公司 | Steering arm splined shaft toothing processing technology |
| CN101259489B (en) * | 2007-03-09 | 2012-05-23 | 周锡轩 | Branch drawing method for stainless steel watch knob handle and mold component |
| CN106001144A (en) * | 2016-05-31 | 2016-10-12 | 宁波德创复冷机械有限公司 | Mold and device used for producing long splines and using method |
| CN107971712A (en) * | 2017-12-29 | 2018-05-01 | 绵阳深度数控科技有限公司 | Cam bit drawing process |
| CN108526828A (en) * | 2018-04-12 | 2018-09-14 | 宣城东海汽车转向部件有限公司 | A kind of production method of full-rolling type spline pair |
| CN108555538A (en) * | 2018-04-12 | 2018-09-21 | 宣城东海汽车转向部件有限公司 | A kind of production method of ball-type motor turning hypomere |
| CN112894278A (en) * | 2021-01-20 | 2021-06-04 | 富奥汽车零部件股份有限公司 | Finish milling forming method for external splines of transmission shafts |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1025482C (en) * | 1992-11-04 | 1994-07-20 | 河北省文安县安里屯冷拉钢材厂 | Cold-drawing process of gear blank bar with tooth outline and its mould |
-
1994
- 1994-04-29 CN CN94104247A patent/CN1043015C/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101259489B (en) * | 2007-03-09 | 2012-05-23 | 周锡轩 | Branch drawing method for stainless steel watch knob handle and mold component |
| CN101596675A (en) * | 2009-06-23 | 2009-12-09 | 诸城市同翔机械有限公司 | Manufacturing technology of spline shaft |
| CN101693259A (en) * | 2009-10-21 | 2010-04-14 | 衡阳康屹金属制品有限公司 | Production method and die of cold-drawing transmission shaft |
| CN101693259B (en) * | 2009-10-21 | 2013-06-26 | 衡阳康屹金属制品有限公司 | Production method and die of cold-drawing transmission shaft |
| CN102049569A (en) * | 2010-11-24 | 2011-05-11 | 沙市久隆汽车动力转向器有限公司 | Steering arm splined shaft toothing processing technology |
| CN102049569B (en) * | 2010-11-24 | 2013-09-25 | 沙市久隆汽车动力转向器有限公司 | Steering arm splined shaft toothing processing technology |
| CN106001144A (en) * | 2016-05-31 | 2016-10-12 | 宁波德创复冷机械有限公司 | Mold and device used for producing long splines and using method |
| CN107971712A (en) * | 2017-12-29 | 2018-05-01 | 绵阳深度数控科技有限公司 | Cam bit drawing process |
| CN108526828A (en) * | 2018-04-12 | 2018-09-14 | 宣城东海汽车转向部件有限公司 | A kind of production method of full-rolling type spline pair |
| CN108555538A (en) * | 2018-04-12 | 2018-09-21 | 宣城东海汽车转向部件有限公司 | A kind of production method of ball-type motor turning hypomere |
| CN112894278A (en) * | 2021-01-20 | 2021-06-04 | 富奥汽车零部件股份有限公司 | Finish milling forming method for external splines of transmission shafts |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1043015C (en) | 1999-04-21 |
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