CN210741853U - Angular contact locking device capable of eliminating play - Google Patents
Angular contact locking device capable of eliminating play Download PDFInfo
- Publication number
- CN210741853U CN210741853U CN201922178746.2U CN201922178746U CN210741853U CN 210741853 U CN210741853 U CN 210741853U CN 201922178746 U CN201922178746 U CN 201922178746U CN 210741853 U CN210741853 U CN 210741853U
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- motor shaft
- sleeve
- angular contact
- play
- eliminating
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Abstract
The utility model provides an angular contact locking device for eliminating play, which comprises a motor shaft, a sleeve, a bearing, a spring, a belt pulley and a fixing nut; the motor shaft is arranged in the sleeve, bearings are arranged between the motor shaft and the sleeve, springs are arranged among the bearings, the gap between each spring and the corresponding baffle is 1.5-3mm, and labyrinth seals are arranged at the left end of the sleeve on the motor shaft through nuts; the belt pulley is installed to the motor shaft left end, and the right side is provided with the location back shaft. The utility model discloses angular contact produces the pretightning force with the spring, eliminates the play, and it is rotatory to drive the centre gripping thing, improves the precision.
Description
Technical Field
The utility model mainly relates to an angular contact locking field especially relates to an eliminate angular contact locking device of play.
Background
In the process of clamping a machined workpiece, the conventional locking device has low clamping precision, and a gap is generated inside the conventional locking device, so that the rotation precision is directly influenced.
The published Chinese invention patent, application number CN201710217009.1, patent name: pairing angular contact ball bearing dynamic wear testing arrangement, application date: 20170405, the invention relates to a dynamic abrasion testing device of paired angular contact ball bearing, the high precision high speed motor without supporting bearing is set as the driving part of the testing machine, the middle air-float shaft sleeve is used as the supporting part, the paired bearings are set at the front end of the shaft back to back, the outer ring applies axial load through the spiral spring and is set in the sleeve, a pair of weights with unequal mass applies radial load to the paired bearings, the outer end face of the paired bearings is set with a non-contact linear displacement sensor, the dynamic abrasion and slip ratio of the paired bearings can be calculated by measuring the displacement of the end face of the outer ring and the end face of the inner ring of the paired bearings and the rotating speed of the retainer, the sleeve can be fixed on the support freely or locked, when the sleeve is fixed, the vibration acceleration sensor and the temperature sensor are used to measure the vibration and the temperature of the paired bearings, when the sleeve is loosened, the friction torque of the paired bearings is measured by a friction torque measuring device consisting of a pair of weights with different masses, a flexible rope and a balance.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model provides an angular contact locking device for eliminating play, which comprises a motor shaft 1, a sleeve 2, a bearing 3, a spring 4, a belt pulley 5 and a fixing nut 6;
the motor shaft 1 is arranged in a sleeve 2, bearings 3 are arranged between the motor shaft 1 and the sleeve 2, springs 4 are arranged among the bearings 3, the gap between each spring 4 and a corresponding baffle 7 is 1.5-3mm, and a labyrinth seal 8 is arranged at the left end of the sleeve 2 on the motor shaft 1 through a nut;
the belt pulley 5 is installed at the left end of the motor shaft 1, and the positioning support shaft 9 is arranged on the right side.
Preferably, the labyrinth seal 8 is composed of a pair of C-shaped seal rings embedded with each other with a gap therebetween.
Preferably, the left end of the motor shaft 1 is polygonal.
Preferably, the end of the belt pulley 5 away from the sleeve 2 is fixedly sleeved with a fixing nut 6.
Preferably, the bearing 3 is provided with a pair of bearing sets on both sides of the spring 4, and the bearing sets on both sides are symmetrical with the vertical central line of the sleeve 2.
Preferably, the right side of the motor shaft 1 is provided with a plurality of mounting holes 10 for mounting the supporting members, and a plurality of the mounting holes 10 are arranged in an equidistant annular array corresponding to the supporting members.
Preferably, a labyrinth seal 8 is mounted on the motor shaft 1 on the right side of the sleeve 2.
The utility model has the advantages that: the angular contact spring generates pretightening force, eliminates play, drives the clamped object to rotate and improves precision.
Drawings
FIG. 1 is a block diagram of the present invention;
in the figure, the position of the upper end of the main shaft,
1. a motor shaft; 2. a sleeve; 3. a bearing; 4. a spring; 5. a belt pulley; 6. fixing a nut; 7. a corresponding baffle plate; 8. labyrinth sealing; 9. positioning a support shaft; 10. and (7) installing holes.
Detailed Description
In order to make the technical solutions of the present invention better understood and make the above features, objects, and advantages of the present invention more comprehensible, the present invention is further described with reference to the following examples. The examples are intended to illustrate the invention only and are not intended to limit the scope of the invention.
As shown in fig. 1, the present invention includes: the motor comprises a motor shaft 1, a sleeve 2, a bearing 3, a spring 4, a belt pulley 5 and a fixing nut 6;
the motor shaft 1 is arranged in a sleeve 2, bearings 3 are arranged between the motor shaft 1 and the sleeve 2, springs 4 are arranged among the bearings 3, the gap between each spring 4 and a corresponding baffle 7 is 1.5-3mm, and a labyrinth seal 8 is arranged at the left end of the sleeve 2 on the motor shaft 1 through a nut;
the belt pulley 5 is installed at the left end of the motor shaft 1, and the positioning support shaft 9 is arranged on the right side.
In the present embodiment, the labyrinth seal 8 is preferably formed by a pair of C-shaped seal rings fitted into each other with a gap therebetween.
With the structure, the pair of C-shaped sealing rings form hard sealing, and the non-contact sealing can drive air to form sealing under high-speed operation.
In this embodiment, the left end of the motor shaft 1 is preferably polygonal.
By means of the structure, when the end face supporting piece for machining needs to be fixed at the left end of the motor shaft 1, the locking effect is achieved, and the motor shaft is convenient to use.
In the present embodiment, the end of the pulley 5 remote from the sleeve 2 is preferably fixedly sleeved with a fixing nut 6.
With the above structure, the movement of the pulley 5 in use is prevented by the fixing nut 6, avoiding adverse effects.
In the present embodiment, it is preferable that the bearings 3 are provided with a pair of bearing sets on both sides of the spring 4, and the bearing sets on both sides are symmetrical with the vertical center line of the sleeve 2.
Set up above-mentioned structure, the fine formation of bearing group that the symmetry set up to motor shaft 1 and sleeve 2 power transmission, guaranteed that every position does not have the time difference, driven continuity.
In this embodiment, it is preferable that the right side of the motor shaft 1 is provided with a plurality of mounting holes 10 for mounting the supporting members, and the plurality of mounting holes 10 are arranged in an equidistant annular array corresponding to the supporting members.
With the above structure, the plurality of mounting holes 10 effectively ensure the stability of the support member.
In the present embodiment, the labyrinth seal 8 is preferably mounted on the motor shaft 1 on the right side of the sleeve 2.
The structure is arranged, and the bidirectional sealing effect is achieved.
When the clamping device is used, the sleeve 2 does not rotate, the motor shaft 1 rotates under the driving of the belt pulley 5 and drives the bearing 3 to synchronously rotate, the labyrinth seal 8 can drive air to form sealing under the high-speed operation, the angular contact spring 4 generates pretightening force and eliminates play, the preload of the spring 4 is 750N, the clamped object is driven to rotate, the precision is improved, and the error is not more than 0.005.
The above-described embodiments are merely illustrative of the principles and utilities of the present patent application and are not intended to limit the present patent application. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of this patent application. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical concepts disclosed in the present application shall be covered by the claims of this patent application.
Claims (7)
1. An angular contact locking device for eliminating play is characterized by comprising a motor shaft (1), a sleeve (2), a bearing (3), a spring (4), a belt pulley (5) and a fixing nut (6);
the motor shaft (1) is arranged in the sleeve (2), the bearings (3) are arranged between the motor shaft (1) and the sleeve (2), springs (4) are arranged among the bearings (3), gaps between the springs (4) and the corresponding baffle plates (7) are 1.5-3mm, and the labyrinth seal (8) is arranged at the left end of the sleeve (2) on the motor shaft (1) through nuts;
a belt pulley (5) is installed at the left end of the motor shaft (1), and a positioning support shaft (9) is arranged on the right side of the motor shaft.
2. The play-eliminating angular contact lock device according to claim 1, wherein: the labyrinth seal (8) is composed of a pair of C-shaped seal rings which are embedded with each other and have a gap between the C-shaped seal rings.
3. The play-eliminating angular contact lock device according to claim 2, wherein: the left end of the motor shaft (1) is polygonal.
4. The play-eliminating angular contact lock device according to claim 3, wherein: and a fixing nut (6) is fixedly sleeved at one end of the belt pulley (5) far away from the sleeve (2).
5. The play-eliminating angular contact lock device according to claim 4, wherein: the bearing (3) is positioned on two sides of the spring (4) and is provided with a pair of bearing sets, and the bearing sets on the two sides are symmetrical with the vertical center line of the sleeve (2).
6. The play-eliminating angular contact lock device according to claim 5, wherein: the right side of motor shaft (1) is provided with mounting hole (10) that a plurality of installation support piece used, and is a plurality of mounting hole (10) correspond support piece equidistance annular array and set up.
7. The play-eliminating angular contact lock device according to claim 6, wherein: and a labyrinth seal (8) is arranged on the motor shaft (1) at the right side of the sleeve (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922178746.2U CN210741853U (en) | 2019-12-06 | 2019-12-06 | Angular contact locking device capable of eliminating play |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922178746.2U CN210741853U (en) | 2019-12-06 | 2019-12-06 | Angular contact locking device capable of eliminating play |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210741853U true CN210741853U (en) | 2020-06-12 |
Family
ID=71011680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922178746.2U Active CN210741853U (en) | 2019-12-06 | 2019-12-06 | Angular contact locking device capable of eliminating play |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210741853U (en) |
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2019
- 2019-12-06 CN CN201922178746.2U patent/CN210741853U/en active Active
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