CN214793792U - Device for measuring rotating precision of bearing in prepressing state - Google Patents

Device for measuring rotating precision of bearing in prepressing state Download PDF

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Publication number
CN214793792U
CN214793792U CN202120509323.9U CN202120509323U CN214793792U CN 214793792 U CN214793792 U CN 214793792U CN 202120509323 U CN202120509323 U CN 202120509323U CN 214793792 U CN214793792 U CN 214793792U
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China
Prior art keywords
bearing
guide rail
shaped
movable support
measuring
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Active
Application number
CN202120509323.9U
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Chinese (zh)
Inventor
胡国栋
李天骊
肖木兰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Guokehuayi Bearing Co ltd
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Shenzhen Guokehuayi Bearing Co ltd
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Priority to CN202120509323.9U priority Critical patent/CN214793792U/en
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Abstract

The utility model provides a device for measuring the rotating precision of a bearing in a prepressing state, wherein a guide rail is fixedly arranged on a horizontal desktop; the bottom of the Y-shaped support is designed to be fitted with the shape of the guide rail and can freely slide on the guide rail; the upper end surface of the Y-shaped bracket is provided with a step which can block the side surface of the bearing; the movable support is connected with the guide rail, and a threaded hole is designed at the top of the movable support; the screw rod is connected with the movable support through threads, and the upper end of the screw rod is provided with a fixed nut; the constant pressure device is connected with the Y-shaped supports, and can set and adjust the pressure applied to the bearing by adjusting the distance between the two Y-shaped supports; the dial indicator is used for measuring radial run-out of the mandrel during rotation and axial run-out of the end face of the bearing inner ring. The utility model discloses utilize the level pressure device to simulate the bearing completely and serve the operating mode on the main shaft, can avoid being not conform to actual conditions owing to do not apply the pretightning force or apply the pretightning force, measure the error that brings.

Description

Device for measuring rotating precision of bearing in prepressing state
Technical Field
The utility model relates to a measuring equipment technical field of bearing precision specifically is a device that is used for pre-compaction state bearing rotation accuracy to measure.
Background
At present, a rotation precision measuring instrument commonly used in the bearing industry places a bearing on a mandrel, and then rotates the mandrel to detect the precision of the bearing, but for an angular contact bearing, the bearing needs to apply a load for pre-tightening when the bearing is actually applied to a main shaft, so that the precision in the actual main shaft application process is the precision of the bearing after pre-tightening. However, when the bearing rotation precision is detected at present, no pre-tightening force is usually applied or a load block is adopted to apply a fixed pre-tightening force, which is seriously inconsistent with the real service condition of the bearing, and the detected bearing precision also has certain deviation.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a device for pre-compaction state bearing rotation accuracy measures, concrete scheme is as follows:
a device for measuring the rotation precision of a bearing in a prepressing state comprises a guide rail, a Y-shaped bracket, a movable bracket, a screw, a fixed pressure block and a dial indicator;
the guide rail is fixedly arranged on the horizontal desktop;
the bottom of the Y-shaped bracket is designed to be matched with the shape of the guide rail, and the size of the Y-shaped bracket is in clearance fit with the guide rail;
the top of the movable support is provided with a threaded hole;
the screw rod can be connected with the movable support through threads, and the upper end of the screw rod is provided with a fixed nut;
the movable support is connected with the Y-shaped support, and the screw rod fixes the bearing through the movable support to prevent radial runout of the bearing in the rotating process;
the fixed pressing block is arranged between the two Y-shaped supports, is fixed by welding and is used for setting and adjusting the pressure applied to the bearing;
the dial indicator is used for measuring radial run-out of the mandrel during rotation and axial run-out of the end face of the bearing inner ring.
The device for measuring the rotating precision of the bearing in the pre-pressing state has the preferable scheme that the Y-shaped bracket can freely slide on the guide rail.
The device for measuring the rotating precision of the bearing in the prepressing state has the preferred scheme that the upper end surface of the Y-shaped support is designed into a V-shaped groove for placing the bearing; the inside design of recess has the step, can fix bearing one side, prevents that the bearing from to one side axial displacement.
A detection process for a device for measuring the rotation accuracy of a bearing in a pre-stressed state comprises the following steps: firstly, placing two matched bearings on a mandrel, and clamping one side of each matched bearing on a step of the mandrel; adjusting the distance between two Y-shaped supports on the guide rail, then placing the mandrel and the bearing on the Y-shaped supports, and clamping the bearing by using the step position of the Y-shaped supports to prevent the bearing from moving along the radial direction; the screw is pressed against the outer ring of the bearing to prevent the bearing from moving along the radial position; adjusting the fixed pressing block, and setting reasonable pretightening force according to actual working conditions; and manually rotating the mandrel on one side, and detecting the radial runout of the outer surface of the mandrel and the axial runout of the end surface of the bearing by adopting a dial indicator, wherein the numerical value of the dial indicator is the precision of the bearing in a prepressing state.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses utilize the level pressure device to simulate the bearing completely and serve the operating mode on the main shaft, can avoid being not conform to actual conditions owing to do not apply the pretightning force or apply the pretightning force, measure the error that brings.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure, 1-guide rail, 2-Y-shaped bracket, 3-movable bracket, 4-screw, 5-constant pressure device, 6-dial indicator, 7-mandrel and 8-bearing.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in figure 1, the device for measuring the rotating precision of the bearing in the prepressing state comprises a guide rail 1, a Y-shaped bracket 2, a movable bracket 3, a screw rod 4, a fixed pressure block 5 and a dial indicator 6;
the guide rail 1 is fixedly arranged on the horizontal desktop;
the bottom of the Y-shaped bracket 2 is designed to be matched with the shape of the guide rail 1, and the size of the Y-shaped bracket is in clearance fit with the guide rail 1;
the top of the movable bracket 3 is provided with a threaded hole;
the screw rod 4 can be connected with the movable support 3 through threads, and the upper end of the screw rod 4 is provided with a fixed nut;
the movable support 3 is connected with the Y-shaped support 2, and the screw 4 fixes the bearing 8 through the movable support 3 to prevent radial runout of the bearing 8 in the rotating process;
the fixed pressing block 5 is arranged between the two Y-shaped supports 2, is fixed by welding and is used for setting and adjusting the pressure applied to the bearing 8;
the dial indicator 6 is used for measuring radial run-out when the mandrel 7 rotates and axial run-out of the end face of the inner ring of the bearing 8.
The Y-shaped support 2 is freely slidable on the guide rails.
The upper end surface of the Y-shaped support 2 is designed into a V-shaped groove for placing a bearing 8;
the inside design of recess has the step, can fix bearing 8 one side, prevents that bearing 8 from to one side axial displacement.
A detection process for a device for measuring the rotation accuracy of a bearing in a pre-stressed state comprises the following steps: firstly, two counter bearings 8 are placed on a mandrel 7, and one side of each counter bearing is clamped on a step of the mandrel 7; adjusting the distance between two Y-shaped supports 2 on the guide rail 1, then placing the mandrel 7 and the bearing 8 on the Y-shaped supports 2, and clamping the bearing 8 by using the step position of the Y-shaped supports 2 to prevent the bearing 8 from moving along the radial direction; the screw rod 4 is pressed against the outer ring of the bearing 8 to prevent the bearing 8 from moving along the radial position; adjusting the fixed pressing block 5, and setting reasonable pretightening force according to the actual working condition; and manually rotating the mandrel 7 on one side, and detecting the radial runout of the outer surface of the mandrel 7 and the axial runout of the end surface of the bearing 8 by adopting a dial indicator 6, wherein the numerical value of the dial indicator is the precision of the bearing in a prepressing state.

Claims (3)

1. The utility model provides a device for prepressing state bearing rotation accuracy measurement which characterized in that: the device comprises a guide rail, a Y-shaped bracket, a movable bracket, a screw, a fixed pressure block and a dial indicator;
the guide rail is fixedly arranged on the horizontal desktop;
the bottom of the Y-shaped bracket is designed to be matched with the shape of the guide rail, and the size of the Y-shaped bracket is in clearance fit with the guide rail;
the top of the movable support is provided with a threaded hole;
the screw rod can be connected with the movable support through threads, and the upper end of the screw rod is provided with a fixed nut;
the bearing is placed on the mandrel, and one side of the bearing is clamped on the step of the mandrel;
the bearing is placed at the step position of the Y-shaped support;
the movable support is connected with the Y-shaped support, and the screw rod fixes the bearing through the movable support to prevent radial runout of the bearing in the rotating process;
the fixed pressing block is arranged between the two Y-shaped supports, is fixed by welding and is used for setting and adjusting the pressure applied to the bearing;
the dial indicator is used for measuring radial run-out of the mandrel during rotation and axial run-out of the end face of the bearing inner ring.
2. The device for measuring the rotation accuracy of a bearing in a pre-stressed state according to claim 1, wherein: the Y-shaped bracket can slide freely on the guide rail.
3. The device for measuring the rotation accuracy of a bearing in a pre-stressed state according to claim 1, wherein: the upper end surface of the Y-shaped bracket is designed into a V-shaped groove for placing a bearing; the inside design of recess has the step, can fix bearing one side, prevents that the bearing from to one side axial displacement.
CN202120509323.9U 2021-03-11 2021-03-11 Device for measuring rotating precision of bearing in prepressing state Active CN214793792U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202120509323.9U CN214793792U (en) 2021-03-11 2021-03-11 Device for measuring rotating precision of bearing in prepressing state

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202120509323.9U CN214793792U (en) 2021-03-11 2021-03-11 Device for measuring rotating precision of bearing in prepressing state

Publications (1)

Publication Number Publication Date
CN214793792U true CN214793792U (en) 2021-11-19

Family

ID=78756122

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202120509323.9U Active CN214793792U (en) 2021-03-11 2021-03-11 Device for measuring rotating precision of bearing in prepressing state

Country Status (1)

Country Link
CN (1) CN214793792U (en)

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