CN213859131U

CN213859131U - Novel barycenter measuring apparatu solid of revolution is fixed device

Info

Publication number: CN213859131U
Application number: CN202021838039.8U
Authority: CN
Inventors: 涂华; 涂壮
Original assignee: Hubei Sanjiang Aerospace Hongfeng Control Co Ltd
Current assignee: Hubei Sanjiang Aerospace Hongfeng Control Co Ltd
Priority date: 2020-08-28
Filing date: 2020-08-28
Publication date: 2021-08-03
Anticipated expiration: 2030-08-28

Abstract

The utility model discloses a novel barycenter measuring apparatu solid of revolution is fixed device, including supporting seat, big rolling disc, little rolling disc, set screw and stop screw, the supporting seat has two sets of and relative setting, and two sets of supporting seat upper portions are equipped with the semicircle orifice that is used for placing big rolling disc and little rolling disc respectively, brakes through stop screw between big rolling disc and little rolling disc and the supporting seat, set screw sets up on big rolling disc and little rolling disc for be fixed in the solid of revolution between big rolling disc and the little rolling disc. The revolving body fixing device is used for replacing V-shaped accessories on the existing mass center measuring instrument, is low in implementation cost, is suitable for mass center measurement of various irregular revolving bodies, is accurate in measurement, is convenient to use, is reliable in performance, and has good popularization value.

Description

Novel barycenter measuring apparatu solid of revolution is fixed device

Technical Field

The utility model belongs to the technical field of the solid of revolution barycenter measurement technique and specifically relates to a novel barycenter measuring apparatu solid of revolution solid fixing device.

Background

The rotary mass measuring instrument mainly adopts two methods in the prior art, one is mainly used by professional institutions for measurement, the measurement cost is too high, the period is long, the mass center tester is purchased for measurement, but when the rotary mass measuring instrument with an irregular shape is used, the conventional mass center measuring instrument cannot be directly used for measurement, two universal V-shaped rotary body accessories configured on the conventional mass center measuring instrument can only be used for mounting various cylindrical products, and the products cannot be accurately stopped at radial 4 quadrant positions, so that the measurement is inaccurate and the use is inconvenient.

SUMMERY OF THE UTILITY MODEL

To the technical problem, the utility model provides a novel barycenter measuring apparatu solid of revolution fixing device, this solid of revolution fixing device are used for replacing the V type accessory on the current barycenter measuring apparatu, and the implementation cost is low, are applicable to the barycenter measurement of various irregular solid of revolution, measure the accuracy, convenient to use, and the dependable performance has fine spreading value.

The utility model provides a novel barycenter measuring apparatu solid of revolution is fixed device, includes supporting seat, big rolling disc, little rolling disc, set screw and stop screw, the supporting seat has two sets of and relative setting, and two sets of supporting seat upper portions are equipped with the semicircle orifice that is used for placing big rolling disc and little rolling disc respectively, brakes through stop screw between big rolling disc and little rolling disc and the supporting seat, set screw sets up on big rolling disc and little rolling disc for be fixed in the solid of revolution between big rolling disc and the little rolling disc.

Preferably, the back-to-back surfaces of the large rotating disc and the small rotating disc are provided with quadrant scale marks for aligning with the quadrant points on the rotating body, and the supporting seat is provided with test scale marks for aligning with the quadrant scale marks.

Preferably, the outer circumferences of the large rotating disc and the small rotating disc are provided with annular grooves matched with the stop screws.

Preferably, the opposite surfaces of the large rotating disc and the small rotating disc are respectively provided with a limiting shaft shoulder, and the side surface of the supporting seat is abutted against the limiting shaft shoulders.

Preferably, the fixing screw is provided with a spring washer and a flat washer.

Preferably, the fixing screws for fixing the large rotating disk and the rotator are symmetrically arranged at the upper end and the lower end of the large rotating disk, and the fixing screws for fixing the small rotating disk and the rotator are uniformly distributed along the circumference of the small rotating disk.

Preferably, the stop screw is a knurled hand-tightening screw.

The beneficial effects of the utility model reside in that:

the revolving body fixing device is used for replacing V-shaped accessories on the existing mass center measuring instrument, the irregular revolving body is installed on the fixing device, and mass center testing of the revolving body can be completed through commercially available mass center measuring instruments.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic view of a supporting seat structure.

Fig. 3 is the utility model discloses be connected with the barycenter measuring apparatu and carry out solid of revolution barycenter measuring schematic diagram.

The reference numbers are as follows: 1-supporting seat, 2-large rotating disc, 3-small rotating disc, 4-fixing screw, 5-stop screw, 6-semicircular hole, 7-quadrant scale mark, 8-testing scale mark, 9-annular groove, 10-limiting shaft shoulder and 11-revolving body.

Detailed Description

The present embodiment is described in detail below with reference to the accompanying drawings.

As shown in fig. 1 to fig. 3, the novel centroid measuring instrument solid of revolution fixing device comprises a supporting seat 1, a large rotating disk 2, a small rotating disk 3, fixing screws 4 and stop screws 5, wherein the supporting seat 1 is provided with two sets of supporting seats which are arranged oppositely, the upper parts of the two sets of supporting seats are respectively provided with a semicircular hole 6 for placing the large rotating disk 2 and the small rotating disk 3, the large rotating disk 2, the small rotating disk 3 and the supporting seat 1 are braked through the stop screws 5, and the fixing screws 4 are arranged on the large rotating disk 2 and the small rotating disk 3 and are used for fixing a solid of revolution 11 between the large rotating disk 2 and the small rotating disk 3.

In this embodiment, quadrant graduation lines 7 for aligning with the quadrant graduation points on the revolving body 11 are arranged on the back-to-back surfaces of the large revolving disc 2 and the small revolving disc 3, and test graduation lines 8 for aligning with the quadrant graduation lines 7 are arranged on the supporting seat 1.

In this embodiment, the outer circumferences of the large rotating disk 2 and the small rotating disk 3 are both provided with annular grooves 9 used in cooperation with the stop screws 5.

In this embodiment, the opposite surfaces of the large rotating disk 2 and the small rotating disk 3 are both provided with a limiting shaft shoulder 10, and the side surface of the supporting seat 1 abuts against the limiting shaft shoulder 10. The limiting shaft shoulder 10 is arranged to prevent the large rotating disc 2 and the small rotating disc 3 from falling off from the supporting seat 1 along the axial direction in the rotating process.

In this embodiment, the set screw 4 is provided with a spring washer and a flat washer (the spring washer and the flat washer are not shown in the drawings).

In the present embodiment, the fixing screws 4 for fixing the large rotary disk 2 and the rotary body 11 are symmetrically arranged at the upper and lower ends of the large rotary disk, and the fixing screws 4 for fixing the small rotary disk 3 and the rotary body 11 are uniformly distributed along the circumference of the small rotary disk 3.

In this embodiment, the stop screw 5 is a knurled screw which is screwed manually, so that the stop screw is convenient to screw in and is not easy to slip.

The specific working principle of this embodiment is as follows.

The fixing device replaces the V-shaped accessory of the existing centroid measuring instrument and is fixed on the centroid measuring instrument. However, if the structures of both ends of the rotator 11 are completely the same, the large rotating disk 2 and the small rotating disk 3 may also have the same structure.

The centroid position of the fixing device is tested: the positions of the large rotating disc 2 and the small rotating disc 3 are adjusted, quadrant marking numbers on quadrant scale marks 7 on two sides of the large rotating disc 2 and the small rotating disc 3 correspond to each other one by one, wherein one quadrant scale mark 7 on the rotating disc is aligned with a test scale mark 8 on the supporting seat, the stop screw 5 is screwed down, the rotating disc is locked with the supporting seat 1, the centroid tester is started to test once, then the stop screw 5 is unscrewed, the large rotating disc 2 and the small rotating disc 3 synchronously rotate for 90 degrees in the same direction every time, the quadrant scale mark 7 of the rotating disc is aligned with the test scale mark 8 of the supporting seat 1, the centroid tester is started repeatedly to test for four times, and the centroid tester can measure the centroid position of the fixing device.

The revolving body 11 to be tested is fixed between the large revolving disc 2 and the small revolving disc 3 through the fixing screws 4, wherein the positions of the fixing screws 4 on the revolving discs can be specifically set or the number of the fixing screws can be increased or decreased according to the positions of the threaded holes on the two end surfaces of the revolving body 11, and in order to further increase the stability of the revolving body 11, positioning pins can be arranged between the revolving disc and the revolving body 11. Before the rotating disc and the supporting seat 1 are locked, quadrant points of 4 on two sides of the rotating body 11 are aligned with quadrant scale marks 7 on the rotating disc by rotating the rotating disc, so that the quadrant points of the rotating body 11 are reflected on the fixing device conveniently, then the rotating disc and the supporting seat 1 are locked by rotating the stop screw 5, and the test is repeated for four times again according to the mode of testing the mass center of the fixing device.

Finally, the centroid measuring instrument calculates and peels the measured centroid parameters of the fixing device from the comprehensive centroid parameters of the revolving body 11 with the fixing device, thereby obtaining the accurate centroid data of the revolving body 11. The theory of operation of barycenter measuring apparatu itself does not belong to the utility model discloses a category, so do not give unnecessary details.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a novel barycenter measuring apparatu solid of revolution is fixed device which characterized in that: including supporting seat, big rolling disc, little rolling disc, set screw and stop screw, the supporting seat has two sets ofly and sets up relatively, and two sets of supporting seat upper portions are equipped with the semicircle orifice that is used for placing big rolling disc and little rolling disc respectively, brakes through stop screw between big rolling disc and the little rolling disc and the supporting seat, set screw sets up on big rolling disc and little rolling disc for be fixed in the solid of revolution between big rolling disc and the little rolling disc.

2. The fixture according to claim 1, wherein: quadrant scale marks used for aligning with quadrant points on the revolving body are arranged on back-to-back surfaces of the large rotating disc and the small rotating disc, and test scale marks used for aligning with the quadrant scale marks are arranged on the supporting seat.

3. The fixture according to claim 1, wherein: and annular grooves matched with the stop screws for use are formed in the outer circumferences of the large rotating disc and the small rotating disc.

4. The fixture according to claim 1, wherein: the opposite surfaces of the large rotating disc and the small rotating disc are respectively provided with a limiting shaft shoulder, and the side surface of the supporting seat is abutted against the limiting shaft shoulders.

5. The fixture according to claim 1, wherein: and the fixing screw is provided with a spring washer and a flat washer.

6. The fixture according to claim 1, wherein: the fixing screws for fixing the large rotating disc and the rotating body are symmetrically arranged at the upper end and the lower end of the large rotating disc, and the fixing screws for fixing the small rotating disc and the rotating body are uniformly distributed along the circumference of the small rotating disc.

7. The fixture according to claim 1, wherein: the stop screw is manually screwed down by knurling.