Weight for dynamic balance calibration

Abstract

The utility model relates to a weight for dynamic balance calibration, which comprises a body, the body comprises a connecting column and connecting blocks arranged at two ends of the connecting column, and one of the connecting blocks is detachably connected with the connecting column; the connecting column is used for being matched with a mounting hole in a verification rotor in an inserted mode, and the mass center of the body coincides with the mass center of the connecting column. The mass center of the body coincides with the mass center of the connecting column, and the mass center of the body coincides with the centroid of the body. And after installation, the component force generated by the weight in the main shaft direction is zero, so that the influence of the mass center of the weight on the detection of the unbalance amount of the dynamic balancing machine can be effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of measurement, in particular to a weight for dynamic balance calibration. Background Art

[0002] According to JJF 1151-2006 wheel dynamic balancing calibration specification, a calibration rotor and weights are used when calibrating a wheel dynamic balancing machine. The calibration process is as follows: after the dynamic balancing machine has been self-calibrated, the calibration rotor is placed on the dynamic balancing machine, and then weights of different weights are installed on the calibration plane of the calibration rotor to produce an unbalanced amount, thereby achieving the purpose of calibrating the dynamic balancing machine.

[0003] The calibration rotor has two calibration planes. When carrying out different calibration projects, weights will be added to the asymmetric points on one side and both sides of the calibration rotor. Since the center of mass of the weights deviates from the calibration plane, the force component in the axial direction of the calibration rotor and the force component in the radial direction will be reduced, which will affect the calibration result of the dynamic balancing machine. Taking the example of applying weights on one side, the weight 1 used is only installed on the single side of one of the calibration sides of the calibration rotor 2, such as Figure 1 As shown, with this structure, when the dynamic balancing machine rotates at an angular velocity ω, weight 1 generates centrifugal force, which will produce a component force in the direction of the rotor axis, thereby affecting the calibration result of the dynamic balancing machine. Only when the centrifugal force generated by weight 1 has a zero component in the main axis direction will it not affect the calibration result of the dynamic balancing machine.

[0004] Therefore, it is necessary to improve the structure of the weights to avoid the problem of inaccurate calibration results caused by the center of mass position after the weights are installed. Summary of the invention

[0005] In view of the defects in the prior art, the technical problem to be solved by the utility model is to provide a dynamic balancing calibration weight, so that when the weight is installed on the calibration rotor, the component force in the main axis direction generated is zero.

[0006] In order to solve the above technical problems, the utility model provides a dynamic balancing calibration weight, including a main body, which includes a connecting column and connecting blocks arranged at both ends of the connecting column, one of the connecting blocks is detachably connected to the connecting column; the connecting column is used to be plugged into and matched with the mounting hole on the calibration rotor, the center of mass of the main body coincides with the center of mass of the connecting column, and the center of mass of the main body coincides with the centroid of the body.

[0007] Preferably, the connecting column is a stud, and the connecting column is connected to the two connecting blocks via threads.

[0008] Preferably, each of the ends of the two connecting blocks close to each other is provided with a threaded hole threadedly connected to the connecting column, and the threaded hole is a blind hole.

[0009] Preferably, the connecting block is cylindrical, cube or cuboid.

[0010] Preferably, the connecting column is threadedly connected to the calibration rotor, and the two connecting blocks are respectively abutted against two sides of the calibration rotor.

[0011] Preferably, the threaded holes of the two connecting blocks have the same depth.

[0012] Preferably, the two connecting blocks are symmetrically arranged at two ends of the connecting column in the length direction.

[0013] Preferably, the connection block is provided with a connection hole adapted to the connection column, and the end of the connection column is magnetically fixed in the corresponding connection hole.

[0014] The utility model has the following beneficial effects: when the dynamic balancing calibration weight of the utility model is used, the connecting block detachably connected to the connecting column is removed, and the remaining connecting column and the connecting block are plugged into the corresponding mounting holes of the calibration rotor, and finally, the previously removed connecting block is connected to the connecting column again to achieve the connection between the weight and the calibration rotor. The center of mass of the body of the utility model coincides with the center of mass of the connecting column, and the center of mass of the body coincides with the centroid of the body, so when the calibration rotor is unilaterally calibrated, the component force in the main axis direction generated by the weight relative to the calibration side of the calibration rotor is zero, thereby effectively avoiding the influence of the center of mass of the weight on the unbalance detection of the dynamic balancing machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the following will briefly introduce the drawings required for the specific implementation or the prior art description.

[0016] In the accompanying drawings, similar elements or parts are generally identified by similar reference numerals. In the accompanying drawings, each element or part is not necessarily drawn according to the actual scale.

[0017] Figure 1 It is a schematic diagram of the installation structure of the weight in the prior art;

[0018] Figure 2 This is a schematic diagram of the structure of the weights of an embodiment of the utility model;

[0019] Figure 3 It is a schematic diagram of the connection structure between the body and the verification rotor of an embodiment of the utility model.

[0020] Reference numerals:

[0021] 1-weight; 2-calibration rotor; 3-connecting column; 4-connecting block; 41-connecting hole. DETAILED DESCRIPTION

[0022] Here, it should be noted that the functions and methods involved in the present invention are merely conventional adaptive applications of the prior art. Therefore, the improvement of the present invention on the prior art is essentially the connection relationship between the hardware, rather than the functions and methods themselves. That is, although the present invention involves some functions and methods, it does not include improvements to the functions and methods themselves. The description of the functions and methods in the present invention is to better illustrate the present invention so as to better understand the present invention.

[0023] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.

[0024] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by technicians in the field to which the utility model belongs.

[0025] like Figure 2 and Figure 3 As shown, this embodiment provides a dynamic balance calibration weight, including a body, the body including a connecting column 3 and connecting blocks 4 arranged at both ends of the connecting column 3, the connecting blocks 4 are cylindrical, cube or cuboid, and in this embodiment, cylindrical. In addition, the two connecting blocks 4 are symmetrically arranged at both ends of the length direction of the connecting column 3, and the above-mentioned connecting column 3 is a stud, and the connecting column 3 and the two connecting blocks 4 are connected by threads.

[0026] Specifically, the two connecting blocks 4 are provided with a connecting hole 41 at one end close to each other. The connecting hole 41 is specifically a threaded hole threadedly connected to the connecting column 3. The threaded hole is a blind hole, and the depths of the connecting holes 41 of the two connecting blocks 4 are the same, so that the two connecting blocks 4 are consistent in shape and quality, thereby

[0027] The center of mass of the main body coincides with the centroid of the main body, and the center of mass of the main body coincides with the center of mass of the connecting column 3 , and both are located on the symmetry plane of the connecting column 3 , which is perpendicular to the axial direction of the connecting column 3 .

[0028] When the dynamic balancing calibration weights of this embodiment are in use, one of the connecting blocks 4 is removed, and the connecting column 3 and the other connecting block 4 are threadedly connected to the verification rotor 2 through the external thread on the connecting column 3. Subsequently, the previously removed connecting block 4 is threadedly connected to the end of the connecting column 3 extending out of the verification rotor 2, so that the two connecting blocks 4 are respectively abutted against the two sides of the verification rotor 2, so that the angle between the center of mass of the main body and the calibration plane of the verification rotor 2 is 0°, and the component force in the main axis direction generated by the weight is zero, thereby effectively avoiding the influence of the center of mass of the weight on the imbalance detection of the dynamic balancing machine.

[0029] It should be noted that, in order to ensure that the connection block 4 is symmetrical with respect to the connection column 3 , scale marks may be provided on the connection column 3 so that the lengths of the connection column 3 extending into the two connection blocks 4 are consistent.

[0030] In practice, the connection hole 41 can also be designed as a light hole adapted to the connection column 3, and the connection column 3 can be inserted into the connection hole 41 and magnetically fixed to the connection block 4, so as to achieve a quick connection between the connection column 3 and the connection block 4. In addition, the connection column 3 can also be designed as a light axis. In this case, the connection column 3 is inserted into the mounting hole of the calibration rotor 2 and magnetically fixed to the calibration rotor 2.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and specification of the utility model.

Claims

1. A weight for dynamic balance calibration, characterized in that: include: A body, the body comprising a connecting column and connecting blocks provided at both ends of the connecting column, wherein one of the connecting blocks is detachably connected to the connecting column; The connecting column is used for plugging and matching with the mounting hole on the calibration rotor, the center of mass of the body coincides with the center of mass of the connecting column, and the center of mass of the body coincides with the centroid of the body.

2. A dynamic balance calibration weight according to claim 1, characterized in that: The connecting column is a stud, and the connecting column is connected to the two connecting blocks through threads.

3. A dynamic balance calibration weight according to claim 2, characterized in that: A threaded hole threadedly connected to the connecting column is provided at one end of the two connecting blocks close to each other, and the threaded hole is a blind hole.

4. A dynamic balance calibration weight according to claim 1, characterized in that: The connecting block is cylindrical, cube or cuboid.

5. The dynamic balance calibration weight according to claim 1, characterized in that: The connecting column is threadedly connected to the calibration rotor, and the two connecting blocks are respectively abutted against two sides of the calibration rotor.

6. A dynamic balance calibration weight according to claim 3, characterized in that: The threaded holes of the two connecting blocks have the same depth.

7. A dynamic balance calibration weight according to claim 1, characterized in that: The two connection blocks are symmetrically arranged at two ends of the connection column in the length direction.

8. The dynamic balance calibration weight according to claim 1, characterized in that: The connection block is provided with a connection hole adapted to the connection column, and the end of the connection column is magnetically fixed in the corresponding connection hole.

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