CN114310700A - Clamping device for measuring joint bearing no-load starting torque and using method - Google Patents
Clamping device for measuring joint bearing no-load starting torque and using method Download PDFInfo
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- CN114310700A CN114310700A CN202111512622.9A CN202111512622A CN114310700A CN 114310700 A CN114310700 A CN 114310700A CN 202111512622 A CN202111512622 A CN 202111512622A CN 114310700 A CN114310700 A CN 114310700A
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- starting torque
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- 238000000034 method Methods 0.000 title claims abstract description 5
- 230000001681 protective effect Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
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Abstract
A clamping device for measuring the no-load starting torque of a joint bearing and a using method thereof comprise a base, two positioning pin rods and a movable clamping block, wherein a sliding groove is formed in the middle of the base, the two positioning pin rods are fixed at one end of the sliding groove on the surface of the base, the lower portion of the movable clamping block is embedded in the sliding groove, an arc-shaped convex surface with the same height as the positioning pin rods is arranged on the front side of the upper portion of the movable clamping block, the arc-shaped convex surface and the side surfaces of the two positioning pin rods form three clamping points of the joint bearing, an adjusting bolt is arranged, one end of the adjusting bolt is connected to the lower portion of the movable clamping block, the other end of the adjusting bolt extends out of the base along the sliding groove and a through hole in the base to be connected with the adjusting nut, and the connecting position of the movable clamping block on the base along the sliding groove can be adjusted through the adjusting nut and the adjusting bolt.
Description
Technical Field
The application relates to the field of machining, in particular to a clamping device for measuring the unloaded starting torque of a joint bearing.
Background
In the field of aircraft manufacturing, a large number of components containing joint bearings are applied to various switching structures of an aircraft, and the joint bearings are mainly used for supporting a mechanical revolving body, reducing the friction coefficient in the motion process and ensuring the revolving precision. The mounting quality of the knuckle bearing directly affects the transmission accuracy, performance and service life of the aircraft assembly components. According to the requirements of bearing installation technical conditions, the bearing needs to measure the no-load starting moment of the bearing before being pressed into the part shell hole so as to correctly match the bearing and the shell hole.
The bearing no-load starting torque refers to the friction resistance torque which needs to be overcome when the bearing clamps and fixes the outer ring of the bearing and the inner ring starts to rotate relative to the bearing axis under the condition that the bearing does not bear load. The index can comprehensively reflect the joint degree and the pre-tightening condition of the spherical surfaces of the inner ring and the outer ring of the bearing and the friction performance of the self-lubricating liner, and is an important index for judging the performance of the joint bearing.
During the actual installation process, the measurement of the bearing no-load starting moment has the following problems: various joint bearing specifications of production field are many, and when the size is less or great, bare-handed is difficult to hold, and if use frock tools such as vice to press from both sides tightly, applied external force can lead to bearing inner race to produce deformation, increases the frictional resistance moment of bearing, causes the moment measuring value inaccurate to can bring the problem of damage bearing surface such as fish tail, crushing.
Therefore, it is very meaningful to find a clamping device for measuring the no-load starting moment of the joint bearing for high-quality installation of the joint bearing in the actual production process.
Disclosure of Invention
For practical problems in production, the present application aims to provide a clamping device for measuring the unloaded starting torque of a spherical plain bearing.
The clamping device for measuring the no-load starting torque of the joint bearing is characterized in that the clamping fixture comprises a base, two positioning pin rods and a movable clamping block, a sliding groove is formed in the middle of the base, the two positioning pin rods are fixed at one end of the sliding groove in the surface of the base, the lower portion of the movable clamping block is embedded in the sliding groove, an arc-shaped convex surface with the same height as the positioning pin rods is arranged on the front side of the upper portion of the movable clamping block, the arc-shaped convex surface and the side faces of the two positioning pin rods form three clamping points of the joint bearing, an adjusting bolt is further arranged, one end of the adjusting bolt is connected to the lower portion of the movable clamping block, the other end of the adjusting bolt extends out of the base along the sliding groove and a through hole in the base to be connected with the adjusting nut, and the connecting position of the movable clamping block on the base along the sliding groove can be adjusted through the adjusting nut and the adjusting bolt.
One end of the sliding groove on the surface of the base is provided with a plurality of positioning pin rod adjusting holes, different positioning pin rod adjusting holes are selected according to the diameter of the joint bearing, and the positioning pin rods are inserted in the different positioning pin rod adjusting holes so as to adjust the distance between the two positioning pin rods.
And a spring is arranged on the adjusting bolt in the sliding groove.
The front side of the upper part of the movable clamping block is provided with a concave notch, a clamping pin rod is embedded in the concave notch, and the front side of the clamping pin rod is an arc convex surface.
And rubber protective sleeves are arranged on the two positioning pins and the clamping pins.
When the device is used, the positions of the movable clamping block and the positioning pin rod are adjusted, the joint bearing needing to measure the unloaded starting torque is horizontally clamped, and the joint bearing is clamped and fixed through the adjusting nut.
The beneficial effect of this application lies in: the clamping device is simple in structure, convenient to use and operate, and convenient to popularize and widely apply.
The present application is described in further detail below with reference to the accompanying drawings of embodiments.
Drawings
Fig. 1 is a schematic structural view of a clamping device.
Fig. 2 is a schematic view showing a state where the joint bearing is clamped by the clamping device.
The numbering in the figures illustrates: the device comprises a base 1, a positioning pin rod 2, a movable clamping block 3, a sliding groove 4, an adjusting bolt 5, an adjusting nut 6, a spring 7, an arc-shaped convex surface 8, a clamping pin rod 9, a positioning pin rod adjusting hole 10 and a joint bearing 11.
Detailed Description
Referring to the drawings, the clamping device for measuring the no-load starting torque of the joint bearing comprises a base 1, two positioning pins 2 and a movable clamping block 3, wherein the base 1 is of a square block structure and is provided with an upper surface and a lower surface which are parallel, and the base can be fixed on a workbench in implementation. The middle part of the base is provided with a sliding groove 4, the two positioning pins 2 are fixed at one end of the sliding groove 4 on the surface of the base, the lower part of the movable clamping block 3 is embedded in the sliding groove 4, the front side of the upper part of the movable clamping block 3 is provided with an arc convex surface 8 with the same height as the positioning pins 2, and the arc convex surface 8 and the side surfaces of the two positioning pins 2 form three clamping points of the knuckle bearing 11. And an adjusting bolt 5 is further arranged, one end of the adjusting bolt 5 is connected to the lower part of the movable clamping block 3, the other end of the adjusting bolt 5 extends out of the base 1 along the sliding groove 4 and the through hole in the base 1 to be connected with an adjusting nut 6, and a spring is arranged on the adjusting bolt in the sliding groove. The connecting position of the movable clamping block 3 on the base 1 along the sliding groove 4 can be adjusted through the adjusting nut 6 and the adjusting bolt 5.
In order to adjust the distance between the two positioning pin rods to adapt to the knuckle bearings with different diameters, in the implementation, one end of a sliding groove on the surface of the base 1 is provided with a plurality of positioning pin rod adjusting holes 10, different positioning pin rod adjusting holes 10 are selected according to the diameters of the knuckle bearings 11, and the positioning pin rods 2 are inserted into the different positioning pin rod adjusting holes 10, so that the distance between the two positioning pin rods is adjusted.
The arc convex surface of the upper front side of the movable clamping block is an adjustable clamping point, in the implementation, the front side of the upper part of the movable clamping block 3 is provided with a concave notch, a clamping pin rod 9 is embedded in the concave notch, and the front side of the clamping pin rod 9 is the arc convex surface.
In order to protect the surface of the spherical plain bearing from scratches, rubber protective sleeves are provided on the two dowel bars 2 and the clamping dowel bar 9.
During the use, according to the size difference of different joint bearing 11, adjust the position of going on the locating pin stick 2 before the centre gripping, ensure joint bearing 11 can be through the common effort of two locating pin sticks 2 and a clamping pin stick 9, through the effectual centre gripping of line contact's mode with joint bearing and fixed.
When the joint bearing has small unloaded starting torque, the clamping device can be held by hands to measure the torque; when the no-load starting torque is larger, the vice can be used for clamping the clamping device base and then measuring the torque.
Claims (6)
1. The clamping device for measuring the no-load starting torque of the joint bearing is characterized in that the clamping fixture comprises a base, two positioning pin rods and a movable clamping block, a sliding groove is formed in the middle of the base, the two positioning pin rods are fixed at one end of the sliding groove in the surface of the base, the lower portion of the movable clamping block is embedded in the sliding groove, an arc-shaped convex surface with the same height as the positioning pin rods is arranged on the front side of the upper portion of the movable clamping block, the arc-shaped convex surface and the side faces of the two positioning pin rods form three clamping points of the joint bearing, an adjusting bolt is further arranged, one end of the adjusting bolt is connected to the lower portion of the movable clamping block, the other end of the adjusting bolt extends out of the base along the sliding groove and a through hole in the base to be connected with the adjusting nut, and the connecting position of the movable clamping block on the base along the sliding groove can be adjusted through the adjusting nut and the adjusting bolt.
2. The clamping device for measuring the no-load starting torque of the spherical plain bearing as claimed in claim 1, wherein a plurality of dowel bar adjusting holes are formed at one end of the sliding groove on the surface of the base, different dowel bar adjusting holes are selected according to the diameter of the spherical plain bearing, and the dowel bars are inserted into the different dowel bar adjusting holes, thereby adjusting the distance between the two dowel bars.
3. The clamping device for measuring the no-load starting torque of a spherical plain bearing according to claim 1, wherein a spring is provided on the adjusting bolt in the sliding groove.
4. The clamping device for measuring the no-load starting torque of the spherical plain bearing as claimed in claim 1, wherein the movable clamping piece has a concave notch at the front side of the upper part, a clamping pin is embedded in the concave notch, and the front side of the clamping pin is an arc convex surface.
5. The clamping device for measuring the no-load starting torque of a spherical plain bearing according to claim 1, wherein the two positioning pins and the clamping pin are provided with rubber protective sleeves.
6. The use method of the clamping device for measuring the no-load starting torque of the joint bearing is characterized in that the position of the positioning pin rods is adjusted before clamping according to the size of the joint bearing, the joint bearing is ensured to be effectively clamped and fixed by the joint bearing through the joint acting force of the two positioning pin rods and the clamping pin rod in a line contact mode, and when the no-load starting torque of the joint bearing is small, the device can be held by hands to measure the torque; when the no-load starting torque is larger, the vice can be used for clamping the base of the device and then measuring the torque.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111512622.9A CN114310700A (en) | 2021-12-08 | 2021-12-08 | Clamping device for measuring joint bearing no-load starting torque and using method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111512622.9A CN114310700A (en) | 2021-12-08 | 2021-12-08 | Clamping device for measuring joint bearing no-load starting torque and using method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114310700A true CN114310700A (en) | 2022-04-12 |
Family
ID=81051234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111512622.9A Pending CN114310700A (en) | 2021-12-08 | 2021-12-08 | Clamping device for measuring joint bearing no-load starting torque and using method |
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| Country | Link |
|---|---|
| CN (1) | CN114310700A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060273503A1 (en) * | 2005-05-25 | 2006-12-07 | Otto Ganter Gmbh & Co. Kg Normteilefabrik | Clamping lever with vertically adjustable thrust bearing |
| CN102345683A (en) * | 2011-09-29 | 2012-02-08 | 台州科锦轴承有限公司 | Windage adjusting device used for adjusting windage of knuckle bearing |
| CN102519639A (en) * | 2011-12-14 | 2012-06-27 | 河南科技大学 | Friction torque measurement apparatus of horizontal bearing |
| CN110726503A (en) * | 2019-11-21 | 2020-01-24 | 中国船舶重工集团公司第七0四研究所 | Micro-torque real-time automatic testing device |
| CN210719494U (en) * | 2019-10-22 | 2020-06-09 | 神华神东煤炭集团有限责任公司 | Detection seat and detection equipment for detecting rotation resistance of bearing |
| CN210731736U (en) * | 2019-11-06 | 2020-06-12 | 启东海大聚龙新材料科技有限公司 | Production of lubricated bearing of water is with firm clamping structure |
| CN212621213U (en) * | 2020-07-09 | 2021-02-26 | 无锡华洋滚动轴承有限公司 | Rolling bearing rotation torque detection device |
| CN212779945U (en) * | 2020-09-30 | 2021-03-23 | 无锡延浦轴承制造有限公司 | Bearing vibration measuring instrument |
| CN213933112U (en) * | 2020-11-23 | 2021-08-10 | 浙江辛子精工机械有限公司 | Bearing starting torque measuring device |
-
2021
- 2021-12-08 CN CN202111512622.9A patent/CN114310700A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060273503A1 (en) * | 2005-05-25 | 2006-12-07 | Otto Ganter Gmbh & Co. Kg Normteilefabrik | Clamping lever with vertically adjustable thrust bearing |
| CN102345683A (en) * | 2011-09-29 | 2012-02-08 | 台州科锦轴承有限公司 | Windage adjusting device used for adjusting windage of knuckle bearing |
| CN102519639A (en) * | 2011-12-14 | 2012-06-27 | 河南科技大学 | Friction torque measurement apparatus of horizontal bearing |
| CN210719494U (en) * | 2019-10-22 | 2020-06-09 | 神华神东煤炭集团有限责任公司 | Detection seat and detection equipment for detecting rotation resistance of bearing |
| CN210731736U (en) * | 2019-11-06 | 2020-06-12 | 启东海大聚龙新材料科技有限公司 | Production of lubricated bearing of water is with firm clamping structure |
| CN110726503A (en) * | 2019-11-21 | 2020-01-24 | 中国船舶重工集团公司第七0四研究所 | Micro-torque real-time automatic testing device |
| CN212621213U (en) * | 2020-07-09 | 2021-02-26 | 无锡华洋滚动轴承有限公司 | Rolling bearing rotation torque detection device |
| CN212779945U (en) * | 2020-09-30 | 2021-03-23 | 无锡延浦轴承制造有限公司 | Bearing vibration measuring instrument |
| CN213933112U (en) * | 2020-11-23 | 2021-08-10 | 浙江辛子精工机械有限公司 | Bearing starting torque measuring device |
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Application publication date: 20220412 |
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