CN206617460U - A kind of helical spline attachment structure - Google Patents
A kind of helical spline attachment structure Download PDFInfo
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- CN206617460U CN206617460U CN201720198340.9U CN201720198340U CN206617460U CN 206617460 U CN206617460 U CN 206617460U CN 201720198340 U CN201720198340 U CN 201720198340U CN 206617460 U CN206617460 U CN 206617460U
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- spline
- splined shaft
- helical
- external splines
- rotatable parts
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Abstract
The utility model discloses a kind of helical spline attachment structure, it is therefore intended that so that two parts of connection can be achieved with axial relative motion without other executing agencies, simple in construction, and reliability is high, the technical scheme used for：Including the external splines being arranged on splined shaft and the internal spline being arranged on rotatable parts, the splined shaft is used to drive rotatable parts to rotate, rotatable parts are set on splined shaft, and the internal spline of rotatable parts and the external splines of splined shaft match, the external splines and internal spline use helical spline, the root circle of the internal spline and the outside circle of external splines coordinate for gap, and the splined shaft drives rotatable parts to rotate the relative motion for realizing axial direction.
Description
Technical field
The utility model is related to spline connection, and in particular to a kind of helical spline attachment structure.
Background technology
Spline connects the connection for being widely used in part and axle, and spline connection connects by the key teeth being equally spaced on axle and hub
Touch mutually pressure to move and torque to transmit, traditional spline form is straight-tooth spline, most common tooth form is rectangular spline and gradually opened
Line spline, the helical angle of spline is 0 °.Parts on shaft can together be rotated with axle after being connected by spline, if spline transmits moment of torsion
While, in addition it is also necessary to part do it is moving axially relative if also need to increase set of execution mechanism, by it is pneumatic, surge or artificially
The mode of applying power promotes part to be axially moved on spline, complicated with upper type, and this undoubtedly adds equipment cost.
Utility model content
In order to solve the problems of the prior art, the utility model proposes a kind of helical spline attachment structure so that connection
Two parts axial relative motion is can be achieved with without other executing agencies, simple in construction, reliability is high.
In order to realize the above object the technical scheme that is used of the utility model for：It is outer on splined shaft including being arranged on
Spline and the internal spline being arranged on rotatable parts, the splined shaft are used to drive rotatable parts to rotate, and rotatable parts are set in
On splined shaft, and the internal spline of rotatable parts and the external splines of splined shaft match, and the external splines and internal spline are using oblique
Tooth spline, the root circle of the internal spline and the outside circle of external splines coordinate for gap, and the splined shaft drives rotatable parts to turn
The dynamic relative motion for realizing axial direction.
The external splines and internal spline use involute helical spline or rectangle helical spline.
The number of teeth, modulus, pressure angle, helical angle and the rotation direction parameter all same of the external splines and internal spline.
The helical teeth helical angle of the external splines and internal spline is 30~40 °.
Gap between the root circle of the internal spline and the outside circle for the external splines being engaged is 0.2~0.6mm.
Compression spring is arranged with the splined shaft and rotatable parts.
The spring base that compression spring is set for card is provided with the splined shaft and rotatable parts, the compression spring
One end is fixed on the spring base of splined shaft, and the other end is fixed on the spring base of rotatable parts.
The splined shaft is provided at both ends with the boss that stroke is moved axially for limiting rotatable parts.
Compared with prior art, the utility model sets external splines on splined shaft, and internal spline is set on rotatable parts,
External splines and internal spline use helical spline, using external splines and internal spline mating connection splined shaft and rotatable parts, and interior
The root circle of spline and the outside circle of external splines coordinate for gap, and the power perpendicular to the flank of tooth can be produced when splined shaft is rotated, should
Power can be analyzed to make rotatable parts overcome axial resistance under axial force and tangential force, responsive to axial force, and under tangential force effect
The rotation of rotatable parts relative spline shaft is set to occur axial displacement, the axle that the utility model is produced when transmitting torque using helical spline
Overcome axial resistance to power, can rotate the rotatable parts relative spline shaft on splined shaft and realize axial movement, without
Other executing agencies can be achieved with axial relative motion, simple in construction, and reliability is high.
Further, the number of teeth of external splines and internal spline, modulus, pressure angle, helical angle and rotation direction parameter all same, it is ensured that
The stability that external splines and internal spline coordinate, torque transmission is more steady reliable.
Further, external splines and internal spline include several uniform helical teeth, and the helical angle size of helical teeth is according to required
Axial force size depending on, helix angle is bigger, spline transmission make parts on shaft rotate moment of torsion it is smaller, the axial force of generation
It is bigger, while the translational speed of axial direction part is slower.
Further, compression spring is arranged with splined shaft and rotatable parts, only when axial force overcomes compression spring
Axial displacement could occur for elastic force, splined shaft and rotatable parts, using the compression spring of different size to splined shaft and rotation section
The relative displacement of part is limited, and when the torque of only splined shaft transmission reaches certain value, axial position could occur for rotatable parts
Move, it is ensured that reliability and applicability of the present utility model.
Further, using splined shaft two ends boss limitation rotatable parts axial movement stroke, it is to avoid rotatable parts
Depart from splined shaft.
Brief description of the drawings
Fig. 1 is the external splines structural representation of splined shaft；
Fig. 2 is the internal spline structure schematic diagram of rotatable parts；
Fig. 3 is the installation diagram of splined shaft and rotatable parts；
Fig. 4 is the force diagram of the single helical teeth flank of tooth of rotatable parts；
Wherein, 1- splined shafts, 2- compression springs, 3- rotatable parts, 4- spring bases, 5- boss.
Embodiment
With reference to specific embodiment and Figure of description the utility model is further explained explanation.
Referring to Fig. 1, Fig. 2 and Fig. 3, the utility model includes the external splines being arranged on splined shaft 1 and is arranged on rotation section
Internal spline on part 3, splined shaft 1 is used to drive rotatable parts 3 to rotate, and rotatable parts 3 are set on splined shaft 1, and rotation section
The external splines of the internal spline of part 3 and splined shaft 1 matches, and external splines and internal spline use helical spline, the tooth root of internal spline
The outside circle of circle and external splines coordinates for gap, and splined shaft 1 drives rotatable parts 3 to rotate the relative motion for realizing axial direction.
External splines and internal spline use the tooth of involute helical spline or rectangle helical spline, external splines and internal spline
Number, modulus, pressure angle, helical angle and rotation direction parameter all same.The helical teeth helical angle of external splines and internal spline is 30~40 °.It is interior
Gap between the root circle of spline and the outside circle for the external splines being engaged is 0.2~0.6mm.
Referring to Fig. 3, it is arranged with compression spring 2, splined shaft 1 and rotatable parts 3 and is all provided with splined shaft 1 and rotatable parts 3
The spring base 4 that compression spring 2 is set for card is equipped with, one end of compression spring 2 is fixed on the spring base of splined shaft 1, the other end
On the spring base for being fixed on rotatable parts 3, the spring base of splined shaft 1 and the other end of the opposed spring seats of splined shaft 1 are respectively provided with
There is the boss 5 that stroke is moved axially for limiting rotatable parts 3.
The axial force that the utility model is produced when transmitting torque by helical teeth overcomes axial resistance, parts on shaft is realized axle
To motion, oblique splined surfaces are evenly distributed with helical teeth, depending on the helical angle size of helical teeth is according to required axial force size, spiral
Angle angle is bigger, and the moment of torsion that oblique spline transmission rotates parts on shaft is smaller, and the axial force of generation is bigger, while axial direction
The translational speed of part is slower.Helical spline connected mode is as shown in figure 3, Fig. 3 is the involute that uses in Retarder
Oblique spline, other forms helical spline (such as rectangular spline) principle is identical with the oblique spline of involute, below with Retarder
Technical solutions of the utility model are illustrated exemplified by the oblique spline of involute of use.
Runner assembly 3 is retarder rotor, and rotor machining has and the number of teeth of splined shaft 1, modulus, pressure angle, helical angle and rotation
To etc. parameter identical helical teeth internal spline.As shown in figure 3, rotor is enclosed on splined shaft 1, the rotor driven of splined shaft 1 is rotated, due to
Spline is helical spline, can produce axial force, when axial force is sufficiently large, rotor can compression spring 2 to left movement, on rotor
Helical teeth internal spline root circle coordinates with the helical teeth external spline teeth tip circle on splined shaft 1 for gap, and gap length, which should consider, to be turned
The backlash of external splines should refer to spline relevant criterion in the centering of son, helical teeth.
Referring to Fig. 3, along P directions, rotor is rotated counterclockwise with splined shaft 1.Stress at the single flank of tooth of rotor helical spline
As shown in figure 4, the rotation of splined shaft 1 can produce power a F, F perpendicular to the rotor helical teeth flank of tooth and can be analyzed to a point axial force F1, when
When F1 is more than the elastic force of compression spring 2, rotor will be made to left movement；Producing another tangential component F2 simultaneously can make rotor relative
Splined shaft is rotated, when retarder works, power F increases, while F1 increases, the compression spring of rotor 3 is moved to the left；Retarder is released
Braking, F reduces spring force drive rotor and moved right.
Two parts that the utility model is connected using helical spline can be achieved with axial without other executing agencies
Relative motion, simple in construction, reliability is high.
Claims (8)
1. a kind of helical spline attachment structure, it is characterised in that turn including the external splines being arranged on splined shaft (1) and being arranged on
Internal spline on dynamic component (3), the splined shaft (1) is used to drive rotatable parts (3) to rotate, and rotatable parts (3) are set in flower
On key axle (1), and the external splines of the internal spline and splined shaft (1) of rotatable parts (3) matches, and the external splines and internal spline are equal
Using helical spline, the root circle of the internal spline and the outside circle of external splines coordinate for gap, and the splined shaft (1), which drives, to be turned
Dynamic component (3) rotates the relative motion for realizing axial direction.
2. a kind of helical spline attachment structure according to claim 1, it is characterised in that the external splines and internal spline are equal
Using involute helical spline or rectangle helical spline.
3. a kind of helical spline attachment structure according to claim 2, it is characterised in that the external splines and internal spline
The number of teeth, modulus, pressure angle, helical angle and rotation direction parameter all same.
4. a kind of helical spline attachment structure according to claim 3, it is characterised in that the external splines and internal spline
Helical teeth helical angle is 30~40 °.
5. a kind of helical spline attachment structure according to claim 4, it is characterised in that the root circle of the internal spline with
Gap between the outside circle for the external splines being engaged is 0.2~0.6mm.
6. a kind of helical spline attachment structure according to claim 1, it is characterised in that the splined shaft (1) and rotation
Compression spring (2) is arranged with part (3).
7. a kind of helical spline attachment structure according to claim 6, it is characterised in that the splined shaft (1) and rotation
The spring base (4) that compression spring (2) are set for card is provided with part (3), one end of the compression spring (2) is fixed on flower
On the spring base of key axle (1), the other end is fixed on the spring base of rotatable parts (3).
8. a kind of helical spline attachment structure according to claim 7, it is characterised in that the splined shaft (1) and spline
The boss (5) that stroke is moved axially for limiting rotatable parts (3) is provided with the spring base of axle (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720198340.9U CN206617460U (en) | 2017-03-02 | 2017-03-02 | A kind of helical spline attachment structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720198340.9U CN206617460U (en) | 2017-03-02 | 2017-03-02 | A kind of helical spline attachment structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206617460U true CN206617460U (en) | 2017-11-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720198340.9U Active CN206617460U (en) | 2017-03-02 | 2017-03-02 | A kind of helical spline attachment structure |
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| CN (1) | CN206617460U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107061525A (en) * | 2017-03-02 | 2017-08-18 | 陕西法士特齿轮有限责任公司 | A kind of helical spline attachment structure |
-
2017
- 2017-03-02 CN CN201720198340.9U patent/CN206617460U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107061525A (en) * | 2017-03-02 | 2017-08-18 | 陕西法士特齿轮有限责任公司 | A kind of helical spline attachment structure |
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