CN207961238U - A kind of full tooth positioning spline mandrel - Google Patents
A kind of full tooth positioning spline mandrel Download PDFInfo
- Publication number
- CN207961238U CN207961238U CN201820001228.6U CN201820001228U CN207961238U CN 207961238 U CN207961238 U CN 207961238U CN 201820001228 U CN201820001228 U CN 201820001228U CN 207961238 U CN207961238 U CN 207961238U
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- CN
- China
- Prior art keywords
- positioning section
- shank
- axis body
- positioning
- cycloidal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model is related to a kind of full teeth to position spline mandrel, belong to technical field of hydraulic pressure.The mandrel includes the axis body that shank and positioning section are constituted, the both ends of axis body have centre bore, positioning section is the splined shaft to match with cycloidal-pin wheel splined hole to be ground, the junction of shank and positioning section forms the axially position shoulder of placement cushion cover, and the one end of positioning section far from shank has the external screw thread for screwing clamp nut.When clamping, the splined hole of one group of cycloidal-pin wheel is plugged in positioning section, bottom surface is resisted against axial limiting on cushion cover, and top surface is compressed with clamp nut, and grinding is formed with the top centre bore for withstanding axis body both ends later.After the utility model, due to being positioned by full tooth splined shaft, therefore not only positioning is reliable, profile accuracy can reach requirement, and exist while effectively eliminating circumferential direction and radial fit gap, therefore tooth form symmetry precision can be improved twice or more, it is ensured that the performance of all-hydraulic steering gear.
Description
Technical field
The utility model is related to a kind of mandrel, especially a kind of full tooth positions spline mandrel, belongs to technical field of hydraulic pressure.
Background technology
Cycloidal pinion engaged pair（Hereinafter referred to as cycloid pair）It is the core component of all-hydraulic steering gear, wherein cycloidal-pin wheel
Processing quality directly determines the performance of steering gear.Under normal circumstances, cycloidal-pin wheel is quenched by machining
Then heat treatment passes through plunge grinding, its flank profil is made to reach precision prescribed.
As far as the applicant is aware, in the form grinding process of the prior art, using the spline mandrel string of only opposite two teeth
Enter cycloidal-pin wheel splined hole, engages and position with corresponding two tooth socket.For a long time, the symmetry of plunge grinding tooth form can only achieve
0.15mm。
Utility model content
The purpose of this utility model is that：In view of the above-mentioned problems of the prior art, being improved by structure, propose a kind of
The full tooth positioning spline mandrel of symmetry precision can be significantly improved.
It is found through analysis and research, although two tooth splines theoretically realize the positioning and clamping of cycloidal-pin wheel, but two teeth are spent
Key mandrel and two tooth socket fit gap of corresponding splined hole exist generates circumferential direction and the possibility of radial positioning error simultaneously, and this two
Kind error all has an impact the symmetry of tooth form, and therefore, it is difficult to improve symmetry precision.
In order to reach object above, the utility model is improved by structure, and the full tooth positioning spline mandrel of proposition includes handle
The axis body that portion and positioning section are constituted, it is to be spent with cycloidal-pin wheel to be ground that the both ends of the axis body, which have centre bore, the positioning section,
The junction of the splined shaft that keyhole matches, the shank and positioning section forms the axially position shoulder of placement cushion cover, the positioning
The one end of section far from shank has the external screw thread for screwing clamp nut.
When clamping, the splined hole of one group of cycloidal-pin wheel is plugged in positioning section, grinding is formed i.e. after being fixed
It can.After the utility model, due to being positioned by full tooth splined shaft, not only positioning is reliable, and profile accuracy can reach
It is required that and effectively eliminate circumferential direction and radial fit gap while exist, therefore tooth form symmetry precision can be improved
Twice or more, it is ensured that the performance of all-hydraulic steering gear.
Description of the drawings
Fig. 1 is the structure sectional view of the utility model one embodiment.
Fig. 2 is the sectional view of Fig. 1 embodiments.
Specific implementation mode
Embodiment one
The full tooth positioning spline mandrel of the present embodiment is as depicted in figs. 1 and 2, and the axis body 1 of plug shape is by shank 1-1 and positioning
Section 1-2 is constituted, and both ends are respectively provided with centre bore A.Positioning section 1-2 is the spline to match with 3 splined hole of cycloidal-pin wheel to be ground
Axis.The junction of shank and positioning section has changeover portion 1-3 of the outer diameter less than shank outer diameter and more than positioning section outer diameter, and is formed
Axially position shoulder B, for disposing cushion cover 4, the endoporus of transition 1-3 and cushion cover 4 is at interference fit.Positioning section 1-2 is far from shank
One end of 1-1 has the external screw thread 1-4 for screwing clamp nut 2.
When clamping, as shown, the splined hole of the cycloidal-pin wheel of one group of bunchiness is plugged in positioning section, bottom surface is resisted against pad
Axial limiting is put on, top surface is compressed with clamp nut, later with the top centre bore respectively against axis body both ends of two on grinding machine,
Grinding is formed again.
By verification experimental verification, due to being positioned by full tooth splined shaft, not only positioning is reliable, and profile accuracy can reach
It is required that and effectively eliminate circumferential direction and radial fit gap while exist, therefore tooth form symmetry precision can be improved
To 0.05mm, the performance of all-hydraulic steering gear is further improved.
Claims (1)
1. a kind of full tooth positions spline mandrel, including the axis body that shank and positioning section are constituted, the both ends of the axis body have center
Hole, it is characterised in that：The positioning section is the splined shaft to match with cycloidal-pin wheel splined hole to be ground, the shank and positioning section
Junction formed placement cushion cover axially position shoulder, the one end of the positioning section far from shank have screws clamp nut
External screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820001228.6U CN207961238U (en) | 2018-01-02 | 2018-01-02 | A kind of full tooth positioning spline mandrel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820001228.6U CN207961238U (en) | 2018-01-02 | 2018-01-02 | A kind of full tooth positioning spline mandrel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207961238U true CN207961238U (en) | 2018-10-12 |
Family
ID=63730310
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820001228.6U Active CN207961238U (en) | 2018-01-02 | 2018-01-02 | A kind of full tooth positioning spline mandrel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207961238U (en) |
-
2018
- 2018-01-02 CN CN201820001228.6U patent/CN207961238U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |