阅读说明：本技术 一种汽车驻车电机齿轮箱异音改善方法 (Method for improving abnormal sound of automobile parking motor gear box ) 是由 姜旭 巴尧 赵卓群 蒋雯雯 邬智胜 于 2021-07-02 设计创作，主要内容包括：本发明公开一种汽车驻车电机齿轮箱异音改善方法,其特征在于：采用涡流式研磨机对汽车驻车电机齿轮箱中的电机马达齿进行研磨,将电机马达齿尖锐的齿顶部的毛刺处理圆润和光滑,毛刺高度减小0.04～0.08mm。通过本发明的方法使得电机马达齿尖锐的齿顶部的毛刺被处理的更加圆润和光滑,毛刺高度可以减小0.04～0.08mm,同时齿轮的啮合精度得到大幅度提高,在最终在装机后,齿轮箱的噪音、异音也大幅度得到改善；本发明的方法操作简单,使用方便,非常适合进行大批量的生产,具有较好的实用性。(The invention discloses a method for improving abnormal sound of a gear box of an automobile parking motor, which is characterized by comprising the following steps of: the motor teeth in the automobile parking motor gear box are ground by adopting an eddy current type grinding machine, the sharp tooth top burrs of the motor teeth are treated to be smooth, and the burr height is reduced by 0.04-0.08 mm. The method of the invention can ensure that the burrs at the sharp tooth top of the motor tooth are treated more roundly and smoothly, the height of the burrs can be reduced by 0.04-0.08 mm, simultaneously the meshing precision of the gear is greatly improved, and finally, after the gear box is installed, the noise and abnormal sound of the gear box are also greatly improved; the method is simple to operate, convenient to use, very suitable for large-batch production and good in practicability.)

1. The method for improving the abnormal sound of the automobile parking motor gear box is characterized by comprising the following steps of: the motor teeth in the automobile parking motor gear box are ground by adopting an eddy current type grinding machine, the sharp tooth top burrs of the motor teeth are treated to be smooth, and the burr height is reduced by 0.04-0.08 mm.

2. The method for improving the abnormal noise of the automobile parking motor gearbox according to claim 1, is characterized in that: the method specifically comprises the following steps:

1) preparing an eddy current type grinder, and checking that the performances of the eddy current type grinder are good in all aspects;

2) preparing rust-proof water, grinding agent, water and grinding stones according to the capacity of the vortex grinding machine in proportion;

3) sequentially adding water, anti-rust water, an abrasive and grinding stones into the vortex type grinding machine; then adding motor teeth of the motor to be ground into the vortex grinding machine, wherein the putting number of the motor teeth of the motor is matched with that of the grinding stones;

4) correspondingly setting the rotating speed and the grinding time of the vortex grinder through a control device;

5) starting the vortex type grinding machine to drive the water, the anti-rust water and the grinding agent in the vortex type grinding machine to be fully mixed and generate a vortex with powerful rotation, and the vortex drives the grinding stone and the motor teeth of the motor to rotate at a high speed so that the motor teeth of the motor and the grinding stone are quickly and fully rubbed, and burrs at sharp tooth tops of the motor teeth of the motor are treated to be smooth and smooth, so that the effects of deburring, derusting, descaling and polishing are achieved;

6) and (5) taking out the motor teeth of the motor after the vortex grinding machine stops, correspondingly measuring whether burrs at the tops of the motor teeth of the motor are reduced or not, and continuously repeating the step 5) according to the measurement result to grind.

3. The method for improving the abnormal noise of the automobile parking motor gearbox according to claim 1, is characterized in that: the grinding stone in the step 2) is set to be 6 x 6mm corundum grinding stone or 6 x 6mm corundum triangular stone.

4. The method for improving the abnormal noise of the automobile parking motor gearbox according to claim 1, is characterized in that: the proportion of the rust-preventive water, the grinding agent and the water in the step 2) is set as 1: 1: and 40, the antirust water and the grinding agent are produced by the chemical production of Henxin.

5. The method for improving the abnormal noise of the automobile parking motor gearbox according to claim 1, is characterized in that: the number ratio of motor teeth of the motor to grinding stones put into the vortex grinding machine in the step 3) is 3: 1, and the amount of the rust preventive water, the grinding mill and the water to be put is set accordingly.

6. The method for improving the abnormal noise of the automobile parking motor gearbox according to claim 1, is characterized in that: the rotating speed of the vortex grinder in the step 4) is set to be 60-100r/min, and the grinding time is set to be 20-40 min.

Technical Field

The invention relates to the technical field of welding of a planet carrier of a gearbox, in particular to a method for improving abnormal sound of a gearbox of an automobile parking motor.

Background

The motor teeth PINION GEAR in the prior art is widely applied to a GEAR box of an automobile EPB system or a GEAR box of a sanitary ware; in the prior art, the size and the performance of a product can be designed to meet the requirements of a customer drawing according to the requirements of a customer manufacturer, but the motor tooth of the motor is specifically installed in a terminal assembly gear box, and abnormal sound and noise can be generated in the actual operation process.

Learn through many times of experiments and detection, because the addendum portion of electric machine motor tooth is comparatively sharp-pointed, has more burr, and this sharp-pointed burr is inconvenient to be got rid of through processing, and this sharp-pointed burr still can influence the meshing precision of gear moreover, thereby deckle edge, the rust on the gear in addition, thus the cinder etc. also can cause the influence to the gear operation and produce the noise, consequently await urgent and wait a comparatively convenient and fast's method to solve the abnormal sound problem.

Disclosure of Invention

The purpose of the invention is as follows: aiming at the defects in the prior art, the method for improving the abnormal sound of the automobile parking motor gear box is provided.

The technical scheme is as follows: in order to achieve the purpose of the invention, the technical scheme adopted by the invention is as follows: the method for improving the abnormal sound of the automobile parking motor gear box is characterized by comprising the following steps of: the motor teeth in the automobile parking motor gear box are ground by adopting an eddy current type grinding machine, the sharp tooth top burrs of the motor teeth are treated to be smooth, and the burr height is reduced by 0.04-0.08 mm.

The method for improving the abnormal sound of the automobile parking motor gear box specifically comprises the following steps:

1) preparing an eddy current type grinder, and checking that the performances of the eddy current type grinder are good in all aspects;

2) preparing rust-proof water, grinding agent, water and grinding stones according to the capacity of the vortex grinding machine in proportion;

3) sequentially adding water, anti-rust water, an abrasive and grinding stones into the vortex type grinding machine; then adding motor teeth of the motor to be ground into the vortex grinding machine, wherein the putting number of the motor teeth of the motor is matched with that of the grinding stones;

4) correspondingly setting the rotating speed and the grinding time of the vortex grinder through a control device;

5) starting the vortex type grinding machine to drive the water, the anti-rust water and the grinding agent in the vortex type grinding machine to be fully mixed and generate a vortex with powerful rotation, and the vortex drives the grinding stone and the motor teeth of the motor to rotate at a high speed so that the motor teeth of the motor and the grinding stone are quickly and fully rubbed, and burrs at sharp tooth tops of the motor teeth of the motor are treated to be smooth and smooth, so that the effects of deburring, derusting, descaling and polishing are achieved;

6) and (5) taking out the motor teeth of the motor after the vortex grinding machine stops, correspondingly measuring whether burrs at the tops of the motor teeth of the motor are reduced or not, and continuously repeating the step 5) according to the measurement result to grind.

Further, the grinding stone in the step 2) is set to be 6 × 6mm corundum grinding stone or 6 × 6mm corundum triangular stone.

Further, the ratio of the rust preventive water, the grinding agent and the water in the step 2) is set to 1: 1: and 40, the antirust water and the grinding agent are produced by the chemical production of Henxin.

Further, the number ratio of motor teeth of the motor to grinding stones put into the vortex grinding machine in the step 3) is 3: 1, and the amount of the rust preventive water, the grinding mill and the water to be put is set accordingly.

Further, the rotating speed of the vortex mill in the step 4) is set to be 60-100r/min, and the milling time is set to be 20-40 min.

Has the advantages that: compared with the prior art, the invention has the following advantages: according to the invention, motor teeth of a motor are ground by an eddy current principle, grinding agents, antirust water and water are put into an eddy current grinding machine to be uniformly mixed, then the motor teeth and grinding stones are put into the eddy current grinding machine, the number proportion of the motor teeth to the grinding stones is set, the grinding machine is started, water generates eddy currents, the grinding stones and the motor teeth of the motor are driven to rotate at a high speed, so that the motor teeth and the grinding stones are quickly and sufficiently rubbed, and the polishing effect of deburring, rust removal, scale removal and polishing is achieved, burrs at sharp tooth tops of the motor teeth are treated to be smoother and smoother, the height of the burrs can be reduced by 0.04-0.08 mm, meanwhile, the meshing precision of gears is greatly improved, and finally, after the gear box is installed, the noise and the abnormal sound of the gear box are also greatly improved; the method is simple to operate, convenient to use, very suitable for large-batch production and good in practicability.

Drawings

FIG. 1 is a graph showing a comparison of burrs in example 1 of the present invention;

FIG. 2 is a view showing engagement accuracy in embodiment 1 of the present invention;

fig. 3 is a noise test chart in embodiment 1 of the present invention.

Detailed Description

The present invention will be further illustrated with reference to the accompanying drawings and specific examples, which are carried out on the premise of the technical solution of the present invention, and it should be understood that these examples are only for illustrating the present invention and are not intended to limit the scope of the present invention.

Example 1

The models used in the implementation are as follows: the FE-ZGR335 electric machine motor teeth were operated with an eddy current grinder model: grinding the motor teeth of the FE-ZGR335, and processing burrs on sharp tooth tops of the motor teeth to be round and smooth, wherein the height of the burrs is reduced by 0.04-0.08 mm; the method specifically comprises the following steps:

1) preparing an eddy current type grinder, and checking that the performances of the eddy current type grinder are good in all aspects;

2) preparing rust-proof water, grinding agent, water and grinding stones according to the capacity of the vortex grinding machine in proportion; and the grinding stone is corundum grinding stone which can be set to be 6 x 6mm or corundum triangular stone which can be set to be 6 x 6 mm; in the embodiment, 6 x 6mm corundum triangular stones are selected; and the ratio of the rust preventive water, the abrasive and the water is set to 1: 1: 40, in addition, the antirust water and the grinding agent are both in the prior art and are produced by the Xinxin chemical industry;

3) sequentially adding water, anti-rust water, an abrasive and grinding stones into the vortex type grinding machine; then adding motor teeth of the motor to be ground into the vortex grinding machine, wherein the putting number of the motor teeth of the motor is matched with that of the grinding stones; the number ratio of motor teeth of the electric motor to grinding stones put into the vortex grinder is 3: 1, for example, 10 grinding stones are put in, and 30 motor teeth are put in; in addition, the total amount of the added anti-rust water, the grinding machine and the water is correspondingly set;

4) correspondingly setting the rotating speed and the grinding time of the vortex grinder through a control device; the rotating speed of the vortex grinding machine can be set to be 60-100r/min, and the rotating speed is set to be 80r/min in the embodiment; the grinding time is set to be 20-40min, and the grinding time is set to be 30min in the embodiment;

5) starting the vortex type grinding machine to drive the water, the anti-rust water and the grinding agent in the vortex type grinding machine to be fully mixed and generate a vortex with powerful rotation, and the vortex drives the grinding stone and the motor teeth of the motor to rotate at a high speed so that the motor teeth of the motor and the grinding stone are quickly and fully rubbed, and burrs at sharp tooth tops of the motor teeth of the motor are treated to be smooth and smooth, so that the effects of deburring, derusting, descaling and polishing are achieved;

6) and (5) taking out the motor teeth of the motor after the vortex grinding machine stops, correspondingly measuring whether burrs at the tops of the motor teeth of the motor are reduced or not, and continuously repeating the step 5) according to the measurement result to grind.

Measuring the motor teeth subjected to eddy grinding, measuring the maximum height of the sharp burrs at the tooth top of the motor teeth, comparing the measured maximum height with motor teeth of the same type which are not subjected to eddy grinding, and obtaining a comparison result chart shown in fig. 1, wherein the maximum height of the sharp burrs at the tooth top of the motor teeth which are not subjected to eddy grinding is about 0.06 mm; after the grinding of the invention, the maximum height of the burr is only 0.015mm, and the height of the burr is obviously reduced.

In addition, the method not only can obviously reduce the height of burrs, but also can obviously improve the meshing precision of the gears, as shown in figure 2, a large gear and a small gear are respectively taken to be tested by the method, and finally, the effect of improving the meshing precision of the gears is achieved, specifically, the radial comprehensive tolerance Fi and the single-tooth radial comprehensive tolerance Fi are reduced by 10-15 um, the assembling precision and the noise level of a customer gearbox assembly are effectively improved by improving the meshing precision, and the quality is improved.

In this embodiment, the motor teeth that are subjected to eddy current grinding and the motor teeth that are not subjected to eddy current grinding are further correspondingly installed in the motor gear box and the sanitary gear box respectively, and a noise test is performed, and the test result is shown in fig. 3, where the noise of the motor gear box and the sanitary gear box without eddy current grinding is 65-70dB and 63-66dB respectively; the noise of the motor gear box and the bathroom gear box which are subjected to eddy current grinding is 58-61dB and 57-60dB respectively, the noise is obviously reduced by 5-10 dB, and the noise problem in the gear box is obviously improved.

According to the invention, motor teeth of a motor are ground by an eddy current principle, grinding agents, antirust water and water are put into an eddy current grinding machine to be uniformly mixed, then the motor teeth and grinding stones are put into the eddy current grinding machine, the number proportion of the motor teeth to the grinding stones is set, the grinding machine is started, water generates eddy currents, the grinding stones and the motor teeth of the motor are driven to rotate at a high speed, so that the motor teeth and the grinding stones are quickly and sufficiently rubbed, and the polishing effect of deburring, rust removal, scale removal and polishing is achieved, burrs at sharp tooth tops of the motor teeth are treated to be smoother and smoother, the height of the burrs can be reduced by 0.04-0.08 mm, meanwhile, the meshing precision of gears is greatly improved, and finally, after the gear box is installed, the noise and the abnormal sound of the gear box are also greatly improved; the method is simple to operate, convenient to use, very suitable for large-batch production and good in practicability.

The detailed description is to be construed as exemplary only and is not intended to limit the invention from practice or the scope of the appended claims, which are intended to include all equivalent variations and modifications within the scope of the invention as claimed.