CN105041838A - Motor shaft with inner spline and manufacturing method of motor shaft - Google Patents
Motor shaft with inner spline and manufacturing method of motor shaft Download PDFInfo
- Publication number
- CN105041838A CN105041838A CN201510355841.9A CN201510355841A CN105041838A CN 105041838 A CN105041838 A CN 105041838A CN 201510355841 A CN201510355841 A CN 201510355841A CN 105041838 A CN105041838 A CN 105041838A
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- inner spline
- motor shaft
- spline housing
- axis body
- internal spline
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- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
A motor shaft with an inner spline comprises a shaft body and an inner spline sleeve. A blind hole is formed in one end of the shaft body. The inner spline sleeve is inserted into the blind hole of the shaft body. Grooves are formed in the wall of the blind hole. At least one protruding key connected with the outer wall of the spline sleeve is arranged on the outer wall of the inner spline and matched with the grooves of the inner hole of the shaft body. The invention correspondingly provides a manufacturing method of the motor shaft. The manufacturing method of the motor shaft is characterized in that heat treatment is conducted on an inner spline sleeve blank in advance to enable the hardness of the inner spline sleeve blank to reach HRC25-HRC58, and the inner spline, the outer wall and the protruding keys of the inner spline sleeve are formed through wire-electrode cutting. The motor shaft obtained through the manufacturing method can bear the action of large torque and impulsive torque and is low in machining cost and high in precision. Besides, the inner spline sleeve of the motor shaft is quenched and then machined, and therefore it is guaranteed that the inner spline sleeve is high in precision, hardness, strength and wear resistance. Because wire-electrode cutting is conducted on the inner spline sleeve, the machining precision of the inner spline is high, and outer diameter centering of the inner spline can be effectively achieved; and in this way, the installation coaxiality and the matching precision are higher when a motor and an executing mechanism are connected, the transmission stability is better, and the bearing capacity is higher.
Description
Technical field
The present invention relates to technical field of motors, particularly a kind of motor shaft with internal spline and manufacture method thereof.
Background technique
The mechanical connection manner of motor drive actuator mainly contains two kinds at present: the first the output shaft of motor and the input shaft of actuator is coupled together by coupling; The second is that the output shaft of motor is made internal spline structure, and the input shaft of actuator directly inserts in motor internal spline quill shaft and couples together.Structurally, the second way eliminates intermediate shaft coupling, has compact structure, transmission stability is good and system cost is low advantage, progressively becomes the optimal way that motor is connected with actuator, apply more and more extensive.
Existing internal spline motor shaft adopts motor shaft and internal spline integral structure mostly, because motor shaft is general longer, so the internal spline of motor shaft is generally designed to blind hole structure, and the internal spline of blind hole structure not only processing cost is high, precision is low, and internal spline heat treatment difficulty, underloading condition can only be applied to, in actual applications under high pulling torque and impulsive torque condition, due to the defect that internal spline machining accuracy is low, tooth face hardness is low and wear no resistance, cause a large amount of early failue of motor shaft, constrain the extensive use of internal spline motor shaft; Also the method fitted together again after adopting splined sleeve and axis body to process respectively is had, solve the problems referred to above, but be that splined sleeve and axis body are combined by the mode that split is pressed into due to what adopt, the bearing housing of outside is contained on splined sleeve, create so again cooperation place to loosen, the problem that the low reliability of rigidity is not high; Also has the structure adopting integral shaft to add the internal spline motor shaft of splined sleeve, interference fit and fixing pin mode is adopted to bear internal spline torsion, shortcoming is the restriction of external diameter by bearing bore diameter of motor shaft, internal spline is restricted to the wall thickness of axle outer surface, fixing pin and inner spline housing interference fit, female splined shaft all can not bear larger moment of torsion and the effect of impulsive torque, so said structure is suitable only for underloading and the occasion of the torsional interaction that is not hit.
Existing internal spline motor shaft generally adopts extruding or the method manufacture of gear shaping, and cost is high, and precision and hardness low, wear no resistance.
Summary of the invention
The problem to be solved in the present invention is to provide a kind of motor shaft with internal spline, makes internal spline motor shaft can bear comparatively high pulling torque and impulsive torque effect.
The present invention is the corresponding manufacture method providing a kind of motor shaft with internal spline also, makes that its processing cost is low, precision is high.
The present invention solves the problems of the technologies described above adopted technological scheme: a kind of motor shaft with internal spline, comprise axis body, inner spline sleeve, it is characterized in that: axis body one end has blind hole, inner spline sleeve is inserted in the blind hole of axis body, and inner spline housing external diameter has a convex key be connected with splined sleeve external diameter and axis body endoporus groove fit at least.
Hardness after above-mentioned inner spline housing heat treatment is HRC25-HRC58, more preferably heat treatment hardness HRC38-HRC54, and optimum is HRC45-HRC52.
Better, above-mentioned spline adopts flank centering.
Better, above-mentioned spline adopts diameter centering.
Also accordingly provide a kind of manufacture method of the motor shaft with internal spline, comprise axis body, inner spline housing, axis body one end is provided with blind hole, inner spline housing inserts in the blind hole of axis body, inner spline housing external diameter has a convex key be connected with spline housing external diameter and axis body endoporus groove fit at least, it is characterized in that: inner spline housing blank heat treatment in advance reaches HRC25-HRC58 to hardness, the internal spline of inner spline housing and inner spline housing external diameter and convex key are shaped by linear cutter.
Better, above-mentioned inner spline housing blank is heat-treated to hardness HRC38-HRC54, and optimum is HRC45-HRC52.
Better, above-mentioned spline adopts flank centering.
Better, above-mentioned spline adopts diameter centering.
Beneficial effect of the present invention: the convex key of inner spline sleeve and axis body endoporus groove fit, motor shaft can bear the effect compared with high pulling torque and impulsive torque, and processing cost is low, precision is high.Motor shaft inner spline sleeve is first quenched aft-loaded airfoil, ensure that inner spline sleeve highi degree of accuracy, high hardness, high strength and high wear resistance, the internal spline structure of motor shaft is compact, inner spline sleeve adopts linear cutter, such internal spline machining accuracy is high, can effectively realize spline diameter centering, the installation coaxality that motor is connected with actuator and quality of fit higher, transmission stability is better, and bearing capacity is larger.
Accompanying drawing explanation
The three-dimensional explosive view of the motor shaft that the manufacture method of the motor shaft of Fig. 1 embodiment of the present invention band internal spline obtains.
Fig. 2 is the sectional view of the motor shaft of embodiment of the present invention band internal spline.
Fig. 3 is the right elevation of the motor shaft of embodiment of the present invention band internal spline.
Fig. 4 is the right elevation partial enlarged drawing of the motor shaft of embodiment of the present invention band internal spline.
Fig. 5 is the sectional view of the convex key of inner spline housing in the motor shaft of embodiment of the present invention band internal spline.
Fig. 6 is inner spline housing blank graphics in the manufacture method of a kind of motor shaft with internal spline of the embodiment of the present invention.
Mark wherein in figure is as follows: 1 axis body; 2 inner spline housings; 3 convex keys; 4 inner spline housing external diameters; 5 grooves; 6 blind holes, 7 internal splines, 8 internal spline grooves, 9 inner spline housing blanks, 10 Linear cut threading holes.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
As shown in Figure 1, a kind of motor shaft with internal spline, axis body 1 end is provided with a blind hole 6, and the hole wall of blind hole 6 is provided with three grooves 5, and inner spline housing 2 mesopore is provided with internal spline 7, inner spline housing external diameter 4 surface is provided with three convex keys 3, inner spline housing 2 is arranged in the blind hole 6 of axis body 1, and inner spline housing external diameter 4 coordinates with the blind hole 6 of axis body 1, and the convex key 3 on inner spline housing external diameter 4 surface coordinates with blind hole 6 further groove 5 of axis body 1, see Fig. 2 and Fig. 3, inner spline housing external diameter 4 coordinates with the blind hole 6 of axis body 1.
A kind of motor shaft processing method with internal spline is as follows: axis body 1 end machining shaping blind hole 6, the hole wall of blind hole 6 is machined to connected in star 5, inner spline housing blank 9 heat treatment hardness HRC25-HRC58, spline housing blank 9 can be circular diagram 6(a), histogram 6(b) or other shapes, after clamping, Linear cut molybdenum filament is through Linear cut threading hole 10, first linear cutter internal spline 7, then linear cutter inner spline housing external diameter 4 surface and convex key 3, inner spline housing 2 is press fit in the blind hole 6 of axis body 1 through electropolishing and deburring, inner spline housing external diameter 4 coordinates with the blind hole 6 of axis body 1, the convex key 3 on inner spline housing external diameter 4 surface coordinates with blind hole 6 further groove 5 of axis body 1, see Fig. 2 and Fig. 3, inner spline housing external diameter 4 coordinates with the blind hole 6 of axis body 1, ensure that axis body 1 and the requirement of inner spline housing 2 coaxality, the convex key 3 of inner spline housing 2 coordinates with the groove 5 of axis body 1 effect bearing high pulling torque and impulsive torque.
In order to ensure that inner spline housing 2 has enough intensity, convex key 3 is processed as closely symmetrical with internal spline groove 8, as shown in Figure 4, the internal spline 7 of inner spline housing 2 is that after clamped one time, linear cutter is shaped with inner spline housing external diameter 4 and convex key 3, ensure that internal spline 7 and the coaxality of inner spline housing external diameter 4 require and convex key 3 relative to the requirement of the position of internal spline 7, overcome inner spline housing first shape after heat treated problem on deformation again, ensure that the high-precision requirement of the internal spline structure of motor shaft.
Above-mentioned convex key 3 can be processed into rectangle as Fig. 5 (a), it is trapezoidal if Fig. 5 (b) or dome rectangle are if Fig. 5 (c) and semicircle are as Fig. 5 (d), for ease of the hole wall machined recess 5 of blind hole 6, most economical is be processed into rectangle as Fig. 5 (a), is secondly ladder diagram 5(b) or dome rectangle as Fig. 5 (c).
Claims (9)
1. the motor shaft with internal spline, comprise axis body, inner spline housing, it is characterized in that: axis body one end is provided with blind hole, inner spline housing inserts in the blind hole of axis body, blind pore wall arranges groove, and inner spline housing external diameter has a convex key be connected with spline housing external diameter and axis body endoporus groove fit at least.
2. the motor shaft of the band internal spline according to claim l, is characterized in that: described inner spline housing hardness is after heat treatment HRC25-HRC58.
3. the motor shaft of band internal spline according to claim 2, is characterized in that: described inner spline housing heat treatment hardness is HRC38-HRC54.
4. the motor shaft of band internal spline according to claim 3, is characterized in that: inner spline housing heat treatment hardness is HRC45-HRC52.
5. the motor shaft of the band internal spline according to claim l, is characterized in that: the convex key of described inner spline housing and internal spline groove closely symmetrical.
6. the manufacture method of the motor shaft with internal spline, it is characterized in that: comprise axis body, inner spline housing, axis body one end processes blind hole, inner spline housing inserts in the blind hole of axis body, inner spline housing external diameter has a convex key be connected with spline housing external diameter and axis body endoporus groove fit at least, inner spline housing blank heat treatment in advance hardness reaches HRC25-HRC58, and the internal spline of inner spline housing and inner spline housing external diameter and convex key are shaped by linear cutter.
7. the manufacture method of the motor shaft of band internal spline according to claim 6, is characterized in that: inner spline housing blank heat treatment in advance hardness HRC38-HRC54.
8. the manufacture method of the motor shaft of band internal spline according to claim 6, is characterized in that: inner spline housing blank heat treatment in advance hardness is HRC45-HRC52.
9. the manufacture method of the motor shaft of band internal spline according to claim 6, is characterized in that: the convex key of inner spline housing becomes closely symmetrical with internal spline groove linear cutter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510355841.9A CN105041838A (en) | 2015-06-25 | 2015-06-25 | Motor shaft with inner spline and manufacturing method of motor shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510355841.9A CN105041838A (en) | 2015-06-25 | 2015-06-25 | Motor shaft with inner spline and manufacturing method of motor shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105041838A true CN105041838A (en) | 2015-11-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510355841.9A Pending CN105041838A (en) | 2015-06-25 | 2015-06-25 | Motor shaft with inner spline and manufacturing method of motor shaft |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108131380A (en) * | 2017-11-29 | 2018-06-08 | 江阴市永兴机械制造有限公司 | A kind of motor shaft and its manufacturing method with internal spline |
| CN108189903A (en) * | 2017-11-28 | 2018-06-22 | 江阴市永兴机械制造有限公司 | A kind of opening internal spline and its manufacturing method |
| CN109454304A (en) * | 2018-12-27 | 2019-03-12 | 苏州联开精密模具有限公司 | A kind of thin blind hole machining technique |
| CN109973511A (en) * | 2017-12-27 | 2019-07-05 | 苏州唐锟辰新能源科技有限公司 | A kind of flange shaft in extruser transmission case |
| CN111468904A (en) * | 2020-05-08 | 2020-07-31 | 湖北坚丰科技股份有限公司 | Deep blind hole internal spline shaft and machining method thereof |
| CN111577749A (en) * | 2020-05-08 | 2020-08-25 | 湖北坚丰科技股份有限公司 | Motor shaft with internal spline and manufacturing method thereof |
| CN111673380A (en) * | 2020-05-28 | 2020-09-18 | 贵州龙飞航空附件有限公司 | Method for machining rotating shaft triangular spline by utilizing electric spark |
| CN114227174A (en) * | 2021-12-30 | 2022-03-25 | 浙江博民机电股份有限公司 | Manufacturing method of spline shaft and spline shaft sleeve |
| CN115263897A (en) * | 2022-06-17 | 2022-11-01 | 中国第一汽车股份有限公司 | Combined hollow motor shaft and manufacturing method thereof |
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| CN201547132U (en) * | 2009-12-10 | 2010-08-11 | 南京工艺装备制造有限公司 | Plastic reverser for rolling spline pairs |
| CN201786929U (en) * | 2010-02-03 | 2011-04-06 | 全球滚珠科技股份有限公司 | Ball spline device |
| CN104074859A (en) * | 2014-06-24 | 2014-10-01 | 南京蒙福液压机械有限公司 | Internal spline motor shaft |
| CN204327732U (en) * | 2014-12-19 | 2015-05-13 | 江西特种电机股份有限公司 | A kind of motor shaft |
| CN205013487U (en) * | 2015-06-25 | 2016-02-03 | 宁波韵升股份有限公司 | Motor shaft of in -band spline |
-
2015
- 2015-06-25 CN CN201510355841.9A patent/CN105041838A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201547132U (en) * | 2009-12-10 | 2010-08-11 | 南京工艺装备制造有限公司 | Plastic reverser for rolling spline pairs |
| CN201786929U (en) * | 2010-02-03 | 2011-04-06 | 全球滚珠科技股份有限公司 | Ball spline device |
| CN104074859A (en) * | 2014-06-24 | 2014-10-01 | 南京蒙福液压机械有限公司 | Internal spline motor shaft |
| CN204327732U (en) * | 2014-12-19 | 2015-05-13 | 江西特种电机股份有限公司 | A kind of motor shaft |
| CN205013487U (en) * | 2015-06-25 | 2016-02-03 | 宁波韵升股份有限公司 | Motor shaft of in -band spline |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108189903A (en) * | 2017-11-28 | 2018-06-22 | 江阴市永兴机械制造有限公司 | A kind of opening internal spline and its manufacturing method |
| CN108131380A (en) * | 2017-11-29 | 2018-06-08 | 江阴市永兴机械制造有限公司 | A kind of motor shaft and its manufacturing method with internal spline |
| CN109973511A (en) * | 2017-12-27 | 2019-07-05 | 苏州唐锟辰新能源科技有限公司 | A kind of flange shaft in extruser transmission case |
| CN109454304A (en) * | 2018-12-27 | 2019-03-12 | 苏州联开精密模具有限公司 | A kind of thin blind hole machining technique |
| CN111468904A (en) * | 2020-05-08 | 2020-07-31 | 湖北坚丰科技股份有限公司 | Deep blind hole internal spline shaft and machining method thereof |
| CN111577749A (en) * | 2020-05-08 | 2020-08-25 | 湖北坚丰科技股份有限公司 | Motor shaft with internal spline and manufacturing method thereof |
| CN111577749B (en) * | 2020-05-08 | 2021-07-27 | 湖北坚丰科技股份有限公司 | Motor shaft with internal spline and manufacturing method thereof |
| CN111673380A (en) * | 2020-05-28 | 2020-09-18 | 贵州龙飞航空附件有限公司 | Method for machining rotating shaft triangular spline by utilizing electric spark |
| CN111673380B (en) * | 2020-05-28 | 2022-08-05 | 贵州龙飞航空附件有限公司 | Method for machining rotating shaft triangular spline by utilizing electric spark |
| CN114227174A (en) * | 2021-12-30 | 2022-03-25 | 浙江博民机电股份有限公司 | Manufacturing method of spline shaft and spline shaft sleeve |
| CN115263897A (en) * | 2022-06-17 | 2022-11-01 | 中国第一汽车股份有限公司 | Combined hollow motor shaft and manufacturing method thereof |
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Application publication date: 20151111 |
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