CN210037209U

CN210037209U - Radial loading device for vibration measurement of thin-wall bearing

Info

Publication number: CN210037209U
Application number: CN201920973796.7U
Authority: CN
Inventors: 赵坤; 李章�; 曹鹏
Original assignee: Ningbo Cixing Bearing Co Ltd
Current assignee: Ningbo Cixing Bearing Co Ltd
Priority date: 2019-06-26
Filing date: 2019-06-26
Publication date: 2020-02-07
Anticipated expiration: 2029-06-26

Abstract

The utility model discloses a radial loading device that thin wall bearing vibration-measuring, include: a base plate; the inner ring of the thin-wall bearing to be detected is arranged on a main shaft of the thin-wall bearing vibration meter; the loading device comprises a pair of radial recording devices arranged on the bottom plate, and a pair of radial loading devices are respectively arranged on the left side and the right side of the bearing to be detected. The utility model adopts the radial loading of the loading tungsten filament, which ensures the uniform distribution of the loading force; the device adopts bilateral symmetry loading, and can automatically compensate the loading force, and can well solve and avoid the deformation of the thin-wall bearing in the loading process.

Description

Radial loading device for vibration measurement of thin-wall bearing

Technical Field

The utility model relates to a thin wall bearing vibration measurement field, concretely relates to radial loading device that thin wall bearing vibration measurement.

Background

The harmonic drive speed variator includes three basic components, wave generator, flexible gear, rigid gear and flexible bearing. The flexible bearing is a core component, and the transmission meets the performance requirement of high reduction ratio through elastic deformation of the bearing. The flexible thin-wall bearing (thin-wall bearing) is widely used for industrial robots, and has high requirements on various performance parameters of the bearing, so that various test requirements on the flexible thin-wall bearing are extremely strict. Particularly the load requirements during testing.

The traditional loading device is arranged to load and measure the vibration of the bearing in a one-way axial direction, the loading force is not uniformly distributed, and the loading precision is not high. And meanwhile, the method is not consistent with the actual working condition.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that the load requirement that exists in the test procedure to current flexible thin wall bearing requires and provides a radial loading device of thin wall bearing vibration meter.

The utility model discloses the technical problem that will solve can realize through following technical scheme:

a radial loading device for vibration measurement of a thin-wall bearing comprises:

a base plate;

the inner ring of the thin-wall bearing to be detected is arranged on a main shaft of the thin-wall bearing vibration meter;

the loading device comprises a pair of radial recording devices arranged on the bottom plate, and a pair of radial loading devices are respectively arranged on the left side and the right side of the bearing to be detected.

In a preferred embodiment of the present invention, the loading tungsten wire is perpendicular to the axis of the thin-walled bearing to be detected.

In a preferred embodiment of the present invention, each radial loading device comprises:

a slide rail mounted on the base plate;

the loading head is arranged on the sliding rail in a sliding mode; the tungsten wire is arranged on the loading head;

the loading motor is arranged on the bottom plate and drives the loading head to load and unload;

and the pressure sensor is arranged between the loading head and the slide rail and is used for detecting the loading force of the loading head.

In a preferred embodiment of the present invention, a tungsten wire chuck is disposed at the end of the loading head facing the thin-walled bearing to be tested, and the two ends of the tungsten wire are clamped on the tungsten wire chuck.

The beneficial effects of the utility model reside in that:

the loading tungsten wire is adopted for radial bidirectional loading, so that the loading tungsten wire can form a larger arc as much as possible to wrap a product, and the uniform distribution of loading force is ensured; the device adopts bilateral symmetry loading, can automatically compensate the loading force, can well avoid the deformation of the thin-wall bearing in the loading process, ensures that the loading force born by the thin-wall bearing is reliable and accurate, and accords with the actual working condition

Drawings

Fig. 1 is a schematic structural view (front view) of the present invention.

Fig. 2 is a schematic structural diagram (top view) of the present invention.

Fig. 3 is a schematic structural view (perspective view) of the present invention.

Detailed Description

The present invention will be further explained by the following detailed description and the working principle with reference to the attached drawings.

Referring to fig. 1 to 3, the radial loading device 100 for vibration measurement of a thin-wall bearing shown in fig. 1 to 3 includes a bottom plate 110, and a thin-wall bearing vibration meter 120 installed above the bottom plate 110, wherein the thin-wall bearing 130 to be detected is installed on a main shaft 121 of the thin-wall bearing vibration meter 120 along an axis 130a, specifically, an outer ring 131 of the thin-wall bearing 130 to be detected is located in a radial loading direction 130b of the thin-wall bearing 130, and an inner ring 132 is installed on the main shaft 121 of the thin-wall bearing vibration meter 120.

Symmetrical slide rails

141 and 142 are arranged on two sides of the radial loading direction 130b of the thin-wall bearing by taking the axial center 130a of the thin-wall bearing 130 to be detected as a symmetrical point, and the

symmetrical loading heads

150 and 160 are slidably mounted on the

slide rails

141 and 142, specifically, the lower parts of the

loading heads

150 and 160 are slidably mounted on the

slide rails

141 and 142 through the

sliders

151 and 161, but the actual sliding mounting manner is not limited to mounting the sliders, as long as the

loading heads

150 and 160 can move along the

symmetrical slide rails

141 and 142.

In addition,

loading servo motors

201 and 202 are further installed at the

ends

141a and 142a of the

slide rails

141 and 142, and the

loading servo motors

201 and 202 drive the

loading heads

150 and 160 to move along the

symmetrical slide rails

141 and 142 respectively, so that loading is realized.

And, on the

loading heads

150, 160, there are symmetrically installed

capstan frames

170 and 180, and on the

surfaces

171 and 181 of the capstan frames facing the flexspline bearing 131, there are vertically installed

loading tungsten wires

171b and 181b by means of

tungsten wire chucks

171a and 181a vertically arranged up and down. So that the

loading tungsten wires

171b and 181b are perpendicular to the axis of the axial center 130a of the thin-walled bearing 130.

And the

loading heads

150 and 160 detect the pressure generated by the

loading heads

150 and 160 through

pressure sensors

191 and 192 installed between them and the

slide rails

141 and 142.

Based on the structure, the utility model discloses a use method and theory of operation lie in:

firstly, the thin-wall bearing 130 to be detected is installed on the main shaft 121 of the thin-wall bearing vibration meter 120 along the shaft center 130a, and the installation distance and the installation position are noticed.

The thin-wall bearing vibration meter 120 is connected to a power supply (not shown in the figure), and the power supply is turned on to enter a control operation interface of the thin-wall bearing vibration meter 120 and input parameters as required.

Then entering a manual mode for interface debugging of a control system, starting the

loading servo motors

201 and 202 on two sides simultaneously to load radial force in a servo mode, enabling the

loading heads

150 and 160 to move radially towards the thin-wall bearing vibration meter 120 along the sliding

rails

141 and 142 under the servo loading action of the

loading servo motors

201 and 202, and enabling the

loading heads

150 and 160 to drive the

winch frames

170 and 180 to move integrally and oppositely until the

loading tungsten wires

171b and 181b touch the outer ring 131 of the thin-wall bearing 130 to be detected;

the

loading heads

150 and 160 are rebounded to drive the

winch frames

170 and 180 to respectively move reversely along the

slide rails

141 and 142 integrally, the

pressure sensors

191 and 192 are used for detecting the pressure generated by the

loading heads

150 and 160, the original position is set after the pressure required in advance is reached, and the start-up test is carried out after the loading is finished.

The design principle of the utility model lies in:

the flexible thin-wall bearing has different structures relative to series bearings such as deep groove balls, the difference of the thickness and the size of the outer ring of the flexible thin-wall bearing is large, and the types of the outer ring are multiple, so the requirements on a test loading mode are different.

The utility model has the advantages that:

1. the radial loading device 100 of the thin-wall bearing vibration meter designed by the applicant adopts two

loading tungsten wires

171b and 181b to drive the

loading heads

150 and 160 to move through servo to load the outer ring 131 of the thin-wall bearing 130 to be detected, and the

loading tungsten wires

171b and 181b are thin, can be used universally and are not easy to break;

2. when the product is subjected to radial force, the

loading tungsten wires

171b and 181b are used for loading, so that the

loading tungsten wires

171b and 181b form a larger arc as much as possible to wrap the product, and the uniform distribution of the loading force is ensured;

3. the device adopts bilateral symmetry loading, so that the deformation of the thin-wall bearing 130 to be detected in the loading process can be well avoided, and the loading force borne by the thin-wall bearing 130 to be detected is reliable and accurate;

4. meanwhile, the radial loading device 100 of the thin-wall bearing vibration meter is accurate in moving position through servo control, and can automatically compensate the magnitude of the loading force in a program, so that the loading force is in a relatively constant state.

Claims

1. A radial loading device for vibration measurement of a thin-wall bearing comprises:

a base plate;

2. The radial loading device for vibration measurement of the thin-walled bearing as claimed in claim 1, wherein the loading tungsten wire is perpendicular to the axis of the thin-walled bearing to be detected.

3. The thin-walled bearing vibration measuring radial loading unit of claim 2, wherein each radial loading unit comprises:

a slide rail mounted on the base plate;

4. The radial loading device for vibration measurement of the thin-walled bearing as claimed in claim 3, wherein the loading head is provided with a tungsten wire chuck arranged up and down at the end facing the thin-walled bearing to be tested, and both ends of the tungsten wire are clamped on the tungsten wire chuck.