CN113237599A - Clamp suitable for dynamic balance compensation of asymmetric transmission shaft with radial structure - Google Patents
Clamp suitable for dynamic balance compensation of asymmetric transmission shaft with radial structure Download PDFInfo
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- CN113237599A CN113237599A CN202110634123.0A CN202110634123A CN113237599A CN 113237599 A CN113237599 A CN 113237599A CN 202110634123 A CN202110634123 A CN 202110634123A CN 113237599 A CN113237599 A CN 113237599A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 30
- 239000004677 Nylon Substances 0.000 claims abstract description 8
- 229920001778 nylon Polymers 0.000 claims abstract description 8
- 238000001125 extrusion Methods 0.000 claims abstract description 7
- 238000000354 decomposition reaction Methods 0.000 claims description 11
- 238000009434 installation Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 description 10
- 230000007547 defect Effects 0.000 description 3
- 230000007306 turnover Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010835 comparative analysis Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M1/00—Testing static or dynamic balance of machines or structures
- G01M1/02—Details of balancing machines or devices
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M1/00—Testing static or dynamic balance of machines or structures
- G01M1/14—Determining imbalance
- G01M1/16—Determining imbalance by oscillating or rotating the body to be tested
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M1/00—Testing static or dynamic balance of machines or structures
- G01M1/30—Compensating imbalance
- G01M1/32—Compensating imbalance by adding material to the body to be tested, e.g. by correcting-weights
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Abstract
The invention discloses a clamp suitable for dynamic balance compensation of an asymmetric transmission shaft with a radial structure, which is used for optimizing the dynamic balance capacity of the transmission shaft. The invention designs a clamp and a balance block, wherein an annular groove for installing the balance block is arranged on the excircle of the clamp, and the small mass balance block consists of a nylon body, a small ball and a screw. The balance weight is arranged in the annular groove, the small ball is extruded to the inner side of the groove by a screw, and the balance weight is fixed to a specified position by the extrusion of the small ball and the inner wall of the groove and the friction force of the balance weight and the inner wall of the groove. The balance block can be accurately installed at a specified position required by dynamic balance, the effects of no damage to a clamp, no limitation on the balance position and high balance precision are achieved, the problem that the overturning compensation error is large because two ends cannot overturn the same angle phase at the same time when the dynamic balance overturning compensation of the transmission shaft with the asymmetric radial structure is carried out is solved, and the dynamic balance work of rotors of the same type can be efficiently completed.
Description
Technical Field
The invention relates to a dynamic balance compensation clamp, in particular to a dynamic balance compensation clamp suitable for an asymmetric transmission shaft with a radial structure.
Background
The radial structure asymmetric transmission shaft is fixed on a dynamic balancing machine through a clamp, wherein one end of the radial structure asymmetric transmission shaft is a triangular flange, and the other end of the radial structure asymmetric transmission shaft is an even number gear spline. In the existing asymmetric transmission shaft dynamic balance process, the dynamic balance of three installation positions of a workpiece, namely 0 degree, 120 degrees and 240 degrees, is turned over and compensated. In the compensation process, when one end of the transmission shaft overturns the angle relative to the side switching fixture, the number of the rotor splines with the asymmetrical structures is not a multiple of 3, so that the other end of the transmission shaft cannot overturn the same angle relative to the other switching fixture at the same time, the measurement of the balancing machine has an error of 3.75 degrees, and accurate compensation cannot be realized. The balance blocks used at present are mostly made of steel, the overall mass of the balance blocks is large, and the requirement for high balance precision cannot be met.
The currently used clamp overturning compensation mode mainly comprises the following steps:
(1) the duplicate removal mode comprises the following steps: the method for compensating the dynamic balance of the radial asymmetric rotor (see patent 201810250397.8) has the defects of inconvenient operation, inaccurate heavy weight removal amount, small effective use times of the clamp caused by grinding and the like.
(2) The way of adding screws: the clamp has a plurality of threaded holes for balancing, and balancing is performed by adding balancing screws into the holes. The method has the defects of fixed balance position and large balance error.
(3) The mode of adding the balance block with the taper and the trapezoid balance block is as follows: this method is mentioned in "conical balance block top cover flanging die" (refer to patent 201710466928.2) and "split balance block for motor and balance structure including the balance block" (refer to patent 201921797213.6). this method has large mass due to the existence of large-sized mounting holes, which results in that the balance block can not be mounted at any position and the requirement of high precision balance is difficult to satisfy.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a clamp suitable for dynamic balance compensation of an asymmetric transmission shaft with a radial structure, so as to overcome the problem that the overturning compensation error is large because two ends of the asymmetric transmission shaft cannot be overturned at the same angle phase at the same time when the asymmetric transmission shaft with the radial structure is overturned and compensated, and ensure that the error of the dynamic balance overturning compensation of the rotor is in a qualified range.
In order to achieve the purpose, the invention adopts the technical scheme that:
anchor clamps can install both ends about treating balanced transmission shaft on the drive rocker about the balancing machine, left side anchor clamps are triangle flange structure, the right side is the interior spline structure of even number tooth, the design of anchor clamps and balancing piece includes following step:
a) an annular groove for mounting a balance block is arranged on the outer circle of the clamp;
b) the main body of the small mass balance block is made of nylon, the size of the small mass balance block is slightly smaller than the width of the groove, the small ball is made of nylon, and the screw is an inner hexagonal screw;
c) a balance block is arranged in the annular groove, a screw is screwed to extrude the small ball to the inner side of the groove, and the balance block is fixed to a specified position through the extrusion of the small ball and the inner wall of the groove and the friction force between the balance block and the inner wall of the groove.
Furthermore, the small ball in the balance block is extruded to the inner side of the groove by utilizing the screwing screw, and the balance block is fixed to a specified position through the extrusion of the small ball and the inner wall of the groove and the friction force of the balance block and the inner wall of the groove, so that the balance block can be installed at any position in the groove.
Furthermore, after the mass and the phase of the balance block to be added are calculated by dynamic balance software, the two balance blocks with known mass are respectively added to the two decomposition angles according to the vector decomposition principle, so that the requirements of installation of the balance blocks at any positions and small residual unbalance amount can be met.
Compared with the prior art, the invention has the advantages that:
1. the invention designs a clamp with a groove and a balance block with a small ball and a screw, and replaces the original methods of fixing the screw, grinding the clamp, and adding the balance block at any position with a taper balance block and a trapezoid balance block, and can synthesize the required balance vector by adding any two balance blocks meeting the quality condition at a specified angle. When the balance block is disassembled, the disassembly can be completed only by loosening the screw, the operation is convenient, and the clamp cannot be damaged;
2. the weight body designed by the invention is made of a lighter-weight nylon material, the weight of the weight is smaller by about 300mg, and the balance precision is higher. The position that the balancing piece added is more accurate, can reduce the unbalance amount of left and right balanced anchor clamps to the index requirement with higher efficiency, greatly reduced anchor clamps the influence to the transmission shaft unbalance amount. The problem of when the turnover angle of the radial-structure asymmetric transmission shaft cannot be equalized, the fluctuation of the unbalance amount is large is solved, and the dynamic unbalance amounts of the transmission shaft at 0 degree, 120 degrees and 240 degrees meet the requirements when the transmission shaft works at a rotating speed.
Drawings
FIG. 1 is a schematic structural view of an asymmetric transmission shaft with a radial structure applied in the present invention
FIG. 2 is a design drawing of a balance weight according to the present invention
FIG. 3 is an assembly view of the weight of the present invention on a fixture
Fig. 4 is a schematic diagram of the flip compensation, wherein the symbols are as follows:
Fleft side of-left clamp unbalance;
Fright side-the right clamp unbalance;
Fleft 1、FLeft 2The unbalance of the left clamp is decomposed into the unbalance of the balance surfaces 1 and 2;
Fright 1、FRight 2The unbalance of the right clamp is decomposed into the unbalance of the balance surfaces 1 and 2;
Fin 1. sup.、FIn combination with 2The unbalance amount is actually measured by the balance surfaces 1 and 2;
Fclamp 1、FClamp 2The resultant unbalance of the clamps on the balance surfaces 1 and 2;
Detailed Description
In order to make the implementation of the present invention more detailed and understandable, the technical solutions of the present invention will be fully and specifically described below in conjunction with the embodiments of the present invention, and it is obvious that the embodiments described herein are only one embodiment of the present invention, and not all embodiments of the present invention. All other embodiments, which can be derived by the person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide a clamp suitable for dynamic balance compensation of a radial asymmetric transmission shaft, which is used for reducing the residual unbalance of the clamp to reduce the influence on the unbalance of the transmission shaft when the angle of one end of the radial asymmetric transmission shaft cannot be accurately and uniformly distributed in the overturning compensation process. The specific technical scheme of the invention comprises the following steps:
(1) anchor clamps can install both ends about treating balanced transmission shaft on the drive rocker about the balancing machine, left side anchor clamps are triangle flange structure, the right side is the interior spline structure of even number tooth, the design of anchor clamps and balancing piece is as follows:
a) an annular groove for mounting a balance block is arranged on the excircle of the clamp, the width of the annular groove is 5mm, and the depth of the annular groove is 5mm, as shown in figure 1;
b) the main body of the small mass balance block is made of nylon, the height of the small mass balance block is 5mm, the width of the small mass balance block is 4.7mm, the small ball is made of nylon, the diameter of the small ball is 3mm, and the screw is an M4 internal hexagonal screw with the length of 4mm, as shown in figure 2;
c) a balance weight is installed in the annular groove, a screw is screwed to extrude the small ball to the inner side of the groove, and the balance weight is fixed to a designated position through the extrusion of the small ball and the inner wall of the groove and the friction force of the balance weight and the inner wall of the groove, as shown in fig. 3.
Furthermore, the small ball in the balance block is extruded to the inner side of the groove by utilizing the screwing screw, and the balance block is fixed to a specified position through the extrusion of the small ball and the inner wall of the groove and the friction force of the balance block and the inner wall of the groove, so that the balance block can be installed at any position in the groove.
Furthermore, after the mass and the phase of the balance block to be added are calculated by dynamic balance software, the two balance blocks with known mass are respectively added to the two decomposition angles according to the vector decomposition principle, so that the requirements of installation of the balance blocks at any positions and small residual unbalance amount can be met.
(2) And (3) carrying out single-side dynamic balance on the left driving end clamp, calculating by dynamic balance software to obtain the mass and the phase of a balance block to be added on the left balance clamp, respectively adding two balance blocks with known mass to two decomposition angles to balance the left balance clamp (as shown in figure 4) according to a vector decomposition principle, and correcting the unbalance amount of the left balance clamp to be within a specified range.
(3) Taking the left driving end, the left balance clamp and the transmission shaft as an integral piece, keeping the assembly position and the relation unchanged, and rotating the right balance clamp relative to the integral piece on the left side by an angle theta to perform combined turnover compensation operation of the right balance clamp and the right driven end; then, single-side dynamic balance is carried out on the right driven end clamp, after the mass and the phase of the balance block added on the right balance clamp are calculated by dynamic balance software, according to the vector decomposition principle, two balance blocks with known mass are respectively added to two decomposition angles to balance the right balance clamp, and the unbalance amount of the right balance clamp is corrected to be within a specified range.
The following embodiments are based on the "dynamic balance compensation method for a radial asymmetric rotor" (see patent 201810250397.8) that the unbalance amount of the left and right balance clamps is reduced within a specified range, and the unbalance amount of the shaft upset compensation is very little affected, so the embodiment only needs to verify whether the left and right balance clamps designed by the present invention meet the specified dynamic balance requirements.
Examples
The invention is suitable for a certain aviation rotor, as shown in figure 1, the left side is a triangular flange structure, the right side is a 32-tooth external spline structure, the total length is 65mm, the maximum external diameter is 100mm, the dynamic balance rotating speed is 4000r/min, and in the engineering practice, the unbalance amounts of the left and right balance clamps are required to be respectively not more than 30 g.mm at 0 degree, 120 degree, 240 degree and other arbitrary angular positions. The method comprises the following specific steps:
(1) installing an experimental device, and checking whether the experimental equipment is normal;
(2) starting the rotor to 4000rpm, collecting initial vibration data, and stopping running the rotor;
(3) add trial weights at the left balance clamp: the mass is 0.65g, the phase is 0 degrees, the rotor is started to 4000rpm, the first test weight vibration data is collected, the rotor is stopped to run, and the test weight is taken down;
(4) adding a test weight to a right balance clamp: the mass is 0.65g, the phase is 0 degrees, the rotor is started to 4000rpm, the vibration data of the second test weight is collected, the rotor is stopped to run, and the test weight is taken down;
(5) software calculates the required added trial weight mass and phase, left balance clamp: mass 0.73g, phase 18.407 °, right balance clamp: mass 0.14g, phase 237.601 °;
(6) according to the vector decomposition principle, balance weights with the mass of 0.23g and 0.65g are respectively added to a 79.31-degree balance clamp and a 0.40-degree balance clamp to balance the left balance clamp; counterbalancing the right balance clamp by adding counterbalances with mass of 0.22g and 0.18g to 292.30 ° and 151.70 ° respectively;
(7) after adding the balance block, starting the rotor to 4000rpm, collecting data after balance, and stopping running the rotor;
(8) comparative analysis of the results of the examples are given in the following table.
And finally, the dynamic balance of the left and right balance clamps is qualified.
Claims (3)
1. The utility model provides a anchor clamps suitable for radial structure asymmetric transmission shaft dynamic balance compensation which characterized in that:
anchor clamps can install both ends about treating balanced transmission shaft on the drive rocker about the balancing machine, the anchor clamps left side is triangle flange structure, the right side is the interior spline structure of even number tooth, the design of anchor clamps and balancing piece includes following step:
a) an annular groove for mounting a balance block is arranged on the outer circle of the clamp;
b) the main body of the small mass balance block is made of nylon, the size of the small mass balance block is slightly smaller than the width of the groove, the small ball is made of nylon, and the screw is an inner hexagonal screw;
c) a balance block is arranged in the annular groove, a screw is screwed to extrude the small ball to the inner side of the groove, and the balance block is fixed to a specified position through the extrusion of the small ball and the inner wall of the groove and the friction force between the balance block and the inner wall of the groove.
2. The clamp suitable for compensating the dynamic balance of the asymmetric transmission shaft with the radial structure according to claim 1, wherein in the design c), the principle is as follows:
the small balls in the balance blocks are extruded to the inner side of the groove by screwing screws, and the balance blocks are fixed to the designated positions through the extrusion of the small balls and the inner wall of the groove and the friction force between the balance blocks and the inner wall of the groove, so that the balance blocks can be installed at any positions in the groove.
3. The clamp suitable for compensating the dynamic balance of the asymmetric transmission shaft with the radial structure as claimed in claim 2, wherein the operation of installing the balance weight at any position is as follows:
after the mass and the phase of the balance block needing to be added are calculated by dynamic balance software, two balance blocks with known mass are respectively added to two decomposition angles according to the vector decomposition principle, so that the requirements of installation at any position of the balance block and small residual unbalance amount can be met.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110634123.0A CN113237599A (en) | 2021-06-07 | 2021-06-07 | Clamp suitable for dynamic balance compensation of asymmetric transmission shaft with radial structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110634123.0A CN113237599A (en) | 2021-06-07 | 2021-06-07 | Clamp suitable for dynamic balance compensation of asymmetric transmission shaft with radial structure |
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| Publication Number | Publication Date |
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| CN113237599A true CN113237599A (en) | 2021-08-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110634123.0A Pending CN113237599A (en) | 2021-06-07 | 2021-06-07 | Clamp suitable for dynamic balance compensation of asymmetric transmission shaft with radial structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114018481A (en) * | 2021-10-18 | 2022-02-08 | 横店集团东磁股份有限公司 | Tool for directly and rapidly balancing axial inner diameter dynamic balance and implementation method thereof |
| CN114646426A (en) * | 2022-03-21 | 2022-06-21 | 孝感松林智能计测器有限公司 | Method for automatically balancing and removing weight of asymmetric crankshaft in double-compensation mode |
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| CN102303286A (en) * | 2011-04-25 | 2012-01-04 | 大连联合风电轴承有限公司 | Novel roller |
| CN203893982U (en) * | 2014-04-08 | 2014-10-22 | 陕西蓝通传动轴有限公司 | Novel automobile transmission shaft dynamic balance clamp tool |
| CN205986561U (en) * | 2016-08-22 | 2017-02-22 | 重庆荣轩机电有限责任公司 | Balanced end plate of electric motor rotor |
| CN106768643A (en) * | 2016-11-29 | 2017-05-31 | 国家电网公司 | A kind of quick weight adjusting device of rotating machinery dynamic balancing and method |
| CN206397546U (en) * | 2016-12-14 | 2017-08-11 | 中国燃气涡轮研究院 | Aeroengine rotor counterweight block structure |
| CN108489669A (en) * | 2018-03-23 | 2018-09-04 | 中国航发哈尔滨东安发动机有限公司 | A kind of radial direction asymmetric rotor dynamic balancing compensation method |
| CN108982014A (en) * | 2018-05-08 | 2018-12-11 | 北京科基佳德智能技术有限公司 | A kind of aero tyre fixed point position and the balanced compensated system of limited point |
| CN110926700A (en) * | 2019-11-08 | 2020-03-27 | 深圳精匠云创科技有限公司 | Dynamic balance correction method and automation equipment using same |
-
2021
- 2021-06-07 CN CN202110634123.0A patent/CN113237599A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102303286A (en) * | 2011-04-25 | 2012-01-04 | 大连联合风电轴承有限公司 | Novel roller |
| CN203893982U (en) * | 2014-04-08 | 2014-10-22 | 陕西蓝通传动轴有限公司 | Novel automobile transmission shaft dynamic balance clamp tool |
| CN205986561U (en) * | 2016-08-22 | 2017-02-22 | 重庆荣轩机电有限责任公司 | Balanced end plate of electric motor rotor |
| CN106768643A (en) * | 2016-11-29 | 2017-05-31 | 国家电网公司 | A kind of quick weight adjusting device of rotating machinery dynamic balancing and method |
| CN206397546U (en) * | 2016-12-14 | 2017-08-11 | 中国燃气涡轮研究院 | Aeroengine rotor counterweight block structure |
| CN108489669A (en) * | 2018-03-23 | 2018-09-04 | 中国航发哈尔滨东安发动机有限公司 | A kind of radial direction asymmetric rotor dynamic balancing compensation method |
| CN108982014A (en) * | 2018-05-08 | 2018-12-11 | 北京科基佳德智能技术有限公司 | A kind of aero tyre fixed point position and the balanced compensated system of limited point |
| CN110926700A (en) * | 2019-11-08 | 2020-03-27 | 深圳精匠云创科技有限公司 | Dynamic balance correction method and automation equipment using same |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114018481A (en) * | 2021-10-18 | 2022-02-08 | 横店集团东磁股份有限公司 | Tool for directly and rapidly balancing axial inner diameter dynamic balance and implementation method thereof |
| CN114646426A (en) * | 2022-03-21 | 2022-06-21 | 孝感松林智能计测器有限公司 | Method for automatically balancing and removing weight of asymmetric crankshaft in double-compensation mode |
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