阅读说明：本技术 准双曲面齿轮齿形控制方法 (Hypoid gear tooth form control method ) 是由 张亚岐 郭凯 陈忠敏 杨显发 张永强 韩超 马友政 赵应强 夏立峰 彭文华 郝锌 于 2021-07-02 设计创作，主要内容包括：本发明涉及准双曲面齿轮制造技术领域,提供了一种准双曲面齿轮齿形控制方法。本发明实施例提供的准双曲面齿轮齿形控制方法,通过对铣齿参数进行反调以加工出质量合格的齿轮样件,在齿轮检测系统中以该齿轮样件建立标准模型,并以加工该齿轮样件的铣齿参数作为标准铣齿参数,在以后的生产中以该标准铣齿参数为基准进行铣齿,这样就省去了每次生产前的反复调试工作,提高了生产效率,保证了产品质量,而且由于以同一铣齿参数进行铣齿,保证了产品的一致性。(The invention relates to the technical field of hypoid gear manufacturing, and provides a hypoid gear tooth profile control method. According to the hypoid gear tooth form control method provided by the embodiment of the invention, the gear sample piece with qualified quality is processed by reversely adjusting the gear milling parameters, the standard model is established in the gear detection system by using the gear sample piece, the gear milling parameters for processing the gear sample piece are used as the standard gear milling parameters, and the gear milling is performed in the subsequent production by using the standard gear milling parameters as the reference, so that the repeated debugging work before each production is omitted, the production efficiency is improved, the product quality is ensured, and the consistency of the product is ensured because the gear milling is performed by using the same gear milling parameters.)

1. A hypoid gear tooth profile control method is characterized by comprising the following steps which are sequentially carried out:

s1, establishing a theoretical model in the gear detection system according to the design parameters of the hypoid gear;

s2, machining a gear sample on the gear machining system according to the gear milling parameters; detecting the gear sample piece through a gear detection system, and reversely adjusting milling parameters according to a detection result;

s3, machining a gear sample on the gear machining system according to the reversely adjusted gear milling parameters, and carrying out heat treatment on the gear sample; then, detecting the gear sample piece through a gear detection system, and reversely adjusting milling parameters according to a detection result;

s4, machining a gear sample on the gear machining system according to the reversely adjusted gear milling parameters, and carrying out heat treatment on the gear sample; then, detecting the gear sample piece through a gear detection system;

if the detection result is unqualified, reversely adjusting the milling tooth parameter according to the detection result, and then repeating the step S4;

and if the detection result is qualified, establishing a standard model in the gear detection system according to the gear sample piece, and taking the milling tooth parameter after the reverse adjustment as a standard milling tooth parameter.

2. The hypoid gear tooth form control method according to claim 1, further comprising, between step S2 and step S3:

s2', machining a gear sample on the gear machining system according to the reversely adjusted gear milling parameters; detecting the gear sample piece through a gear detection system; if the detection result is unqualified, reversely adjusting the milling tooth parameter according to the detection result, and then repeating the step S2'; if the detection result is acceptable, the process proceeds to step S3.

3. The hypoid gear tooth form control method according to claim 1 or 2, wherein the method of adjusting back the milling tooth parameters comprises: and calculating the deformation of each parameter of the gear sample according to the detection result, multiplying the deformation of each parameter by the proportional correction coefficient of each parameter to obtain the correction value of each parameter, and adding the correction value of each parameter to the numerical value of each parameter during the gear sample processing to obtain the corrected numerical value of each parameter.

4. The hypoid gear tooth form control method according to claim 1 or 2, wherein at least three sets of gear samples are machined at a time on a gear machining system.

5. The hypoid gear tooth profile control method according to claim 1 or 2, wherein the gear sample is heat-treated under the same process conditions in step S3 and step S4.

Technical Field

The invention relates to the technical field of hypoid gear manufacturing, in particular to a hypoid gear tooth profile control method.

Background

Noise, vibration and harshness (NVH) are short for NVH, are a comprehensive problem for measuring the manufacturing quality of automobiles, and give the automobile users the most direct and superficial feeling. The hypoid gear is a structure in a transmission system of an automobile drive axle, and the processing quality of the hypoid gear directly influences the NVH performance of the automobile drive axle.

In the manufacturing process of the hypoid gear, the errors of a processing machine tool, the errors of a cutter and the deformation of heat treatment are all factors influencing the processing quality of the hypoid gear, so that the hypoid gear needs to be debugged repeatedly before being operated every time aiming at the same machine tool, and then the hypoid gear is processed. The manual debugging not only takes a lot of time, but also the debugging results are different each time, so that the quality of the hypoid gear processed each time is different, and the consistency of the product is poor.

Disclosure of Invention

The invention aims to solve the technical problem of providing a hypoid gear tooth form control method to ensure the consistency of products.

The technical scheme adopted by the invention for solving the technical problems is as follows: a hypoid gear tooth profile control method comprises the following steps which are carried out sequentially:

s1, establishing a theoretical model in the gear detection system according to the design parameters of the hypoid gear;

s2, machining a gear sample on the gear machining system according to the gear milling parameters; detecting the gear sample piece through a gear detection system, and reversely adjusting milling parameters according to a detection result;

s3, machining a gear sample on the gear machining system according to the reversely adjusted gear milling parameters, and carrying out heat treatment on the gear sample; then, detecting the gear sample piece through a gear detection system, and reversely adjusting milling parameters according to a detection result;

s4, machining a gear sample on the gear machining system according to the reversely adjusted gear milling parameters, and carrying out heat treatment on the gear sample; then, detecting the gear sample piece through a gear detection system;

if the detection result is unqualified, reversely adjusting the milling tooth parameter according to the detection result, and then repeating the step S4;

and if the detection result is qualified, establishing a standard model in the gear detection system according to the gear sample piece, and taking the milling tooth parameter after the reverse adjustment as a standard milling tooth parameter.

Further, between the step S2 and the step S3, the method further includes:

s2', machining a gear sample on the gear machining system according to the reversely adjusted gear milling parameters; detecting the gear sample piece through a gear detection system; if the detection result is unqualified, reversely adjusting the milling tooth parameter according to the detection result, and then repeating the step S2'; if the detection result is acceptable, the process proceeds to step S3.

Further, the method for reversely adjusting the milling tooth parameters comprises the following steps: and calculating the deformation of each parameter of the gear sample according to the detection result, multiplying the deformation of each parameter by the proportional correction coefficient of each parameter to obtain the correction value of each parameter, and adding the correction value of each parameter to the numerical value of each parameter during the gear sample processing to obtain the corrected numerical value of each parameter.

Furthermore, at least three sets of gear sample pieces are processed on the gear processing system each time.

Further, in step S3 and step S4, the gear sample is heat-treated under the same process conditions.

The invention has the beneficial effects that: according to the hypoid gear tooth form control method provided by the embodiment of the invention, the gear sample piece with qualified quality is processed by reversely adjusting the gear milling parameters, the standard model is established in the gear detection system by using the gear sample piece, the gear milling parameters for processing the gear sample piece are used as the standard gear milling parameters, and the gear milling is performed in the subsequent production by using the standard gear milling parameters as the reference, so that the repeated debugging work before each production is omitted, the production efficiency is improved, the product quality is ensured, and the consistency of the product is ensured because the gear milling is performed by using the same gear milling parameters.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below; it is obvious that the drawings in the following description are only some embodiments described in the present invention, and that other drawings can be obtained from these drawings by a person skilled in the art without inventive effort.

Fig. 1 is a flowchart of a hypoid gear tooth profile control method according to an embodiment of the present invention.

Detailed Description

In order that those skilled in the art will better understand the present invention, the following further description is provided in conjunction with the accompanying drawings and examples. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. The embodiments and features of the embodiments of the invention may be combined with each other without conflict.

Fig. 1 is a flowchart of a hypoid gear tooth profile control method according to an embodiment of the present invention.

Referring to fig. 1, a hypoid gear tooth profile control method according to an embodiment of the present invention is characterized by including the following steps performed in sequence:

s1, establishing a theoretical model in the gear detection system according to the design parameters of the hypoid gear;

s2, machining a gear sample on the gear machining system according to the gear milling parameters; detecting the gear sample piece through a gear detection system, and reversely adjusting milling parameters according to a detection result;

s3, machining a gear sample on the gear machining system according to the reversely adjusted gear milling parameters, and carrying out heat treatment on the gear sample; then, detecting the gear sample piece through a gear detection system, and reversely adjusting milling parameters according to a detection result;

s4, machining a gear sample on the gear machining system according to the reversely adjusted gear milling parameters, and carrying out heat treatment on the gear sample; then, detecting the gear sample piece through a gear detection system;

if the detection result is unqualified, reversely adjusting the milling tooth parameter according to the detection result, and then repeating the step S4;

and if the detection result is qualified, establishing a standard model in the gear detection system according to the gear sample piece, and taking the milling tooth parameter after the reverse adjustment as a standard milling tooth parameter.

In step S1, the milling parameters can be calculated from the design parameters of the hypoid gear by establishing a theoretical model in the gear inspection system.

In step S2, gear samples can be processed on a gear processing system such as a gear milling machine according to the gear milling parameters, and preferably, three sets of gear samples should be processed each time; and then, detecting the gear sample piece through a gear detection system to obtain detection data of the gear, comparing the detection data with design parameters of the gear to obtain the deformation of the gear, and then reversely adjusting the milling parameters according to the deformation of the gear. By reversely adjusting the milling parameters, the gear deformation caused by the error of the processing machine tool and the error of the cutter can be reduced.

In step S3, a gear sample is machined on the gear milling machine according to the reversely adjusted gear milling parameters, the gear sample is subjected to heat treatment, the gear sample is detected by the gear detection system to obtain detection data of the gear, the detection data is compared with the design parameters of the gear to obtain the deformation of the gear, and then the gear milling parameters are reversely adjusted according to the deformation of the gear. By adjusting the milling parameters back, the amount of gear deformation due to heat treatment can be reduced.

In the step S4, machining a gear sample on a gear milling machine according to the reversely adjusted gear milling parameters, carrying out heat treatment on the gear sample, and then detecting the gear sample through a gear detection system; if the detection result is qualified, for example, the tooth profile deformation is less than or equal to 20 μm, the tooth depth deformation is less than or equal to +/-2 μm, and the tooth thickness deformation is less than or equal to +/-2 μm, the gear is indicated to meet the requirements, batch production can be carried out, at the moment, a standard model is established in a gear detection system by using the gear sample piece, the standard gear milling parameter is not made by using the gear milling parameter for processing the gear sample piece, and gear milling is carried out by using the standard gear milling parameter as a reference in the subsequent production; and if the detection result is unqualified, repeating the step S4, and performing at least one reverse adjustment on the milling tooth parameters until the machined gear sample piece is qualified in detection.

In step S3 and step S4 of the present embodiment, the gear sample is heat-treated under the same process conditions to ensure that the gear sample has the same deformation conditions during the heat treatment.

In order to reduce the backshifting amount of the milling tooth parameters in steps S3 and S4, it is preferable that the method further includes, between step S2 and step S3:

s2', machining a gear sample on the gear machining system according to the reversely adjusted gear milling parameters; detecting the gear sample piece through a gear detection system; if the detection result is unqualified, reversely adjusting the milling tooth parameter according to the detection result, and then repeating the step S2'; if the detection result is acceptable, the process proceeds to step S3.

In step S2', if the detection is acceptable, for example, the tooth profile deformation is less than or equal to 10 μm, the tooth depth deformation is less than or equal to + -2 μm, and the tooth thickness deformation is less than or equal to- (3-4) μm, then step S3 is directly performed. If the detection result is not qualified, repeating the step S2', and performing at least one back adjustment on the milling tooth parameters until the machined gear sample piece is qualified.

In this embodiment, the method for reversely adjusting the milling tooth parameter includes: and calculating the deformation of each parameter of the gear sample according to the detection result, multiplying the deformation of each parameter by the proportional correction coefficient of each parameter to obtain the correction value of each parameter, and adding the correction value of each parameter to the numerical value of each parameter during the gear sample processing to obtain the corrected numerical value of each parameter.

According to the hypoid gear tooth form control method provided by the embodiment of the invention, the gear sample piece with qualified quality is processed by reversely adjusting the gear milling parameters, the standard model is established in the gear detection system by using the gear sample piece, the gear milling parameters for processing the gear sample piece are used as the standard gear milling parameters, and the gear milling is performed in the subsequent production by using the standard gear milling parameters as the reference, so that the repeated debugging work before each production is omitted, the production efficiency is improved, the product quality is ensured, and the consistency of the product is ensured because the gear milling is performed by using the same gear milling parameters.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by 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.