CN115031678B - Noise gear screening method based on tooth profile waviness information and gear transmission error information - Google Patents

Abstract

The invention discloses a noise gear screening method based on tooth profile waviness information and gear transmission error information. According to the gear tooth profile waviness information and gear transmission error information in the gear measurement results to judge whether the gear is a noise gear, it is first necessary to clarify Noise gear definition. In the actual use of the gear, when the gear transmission noise is too large and does not meet the design requirements or use requirements, the gear can be judged as a noise gear. The generation of noisy gears may be caused by reasons such as gear design, gear manufacturing or gear assembly. The technical advantage of the present invention is to define the noise gear evaluation index based on gear tooth profile waviness and gear transmission error information, the threshold value can be set according to the design and use requirements, and the noise gear can be efficiently screened out in the production and assembly process to improve the product quality. performance.

Description

A noise gear screening method based on tooth profile waviness information and gear transmission error information

technical field

The invention relates to a noise gear screening method based on tooth profile waviness information and gear transmission error information, aimed at involute spur gears.

Background technique

With the improvement of people's requirements for the use of gears, the gear transmission is developing in the direction of high precision, low vibration and low noise.

The noise level of the gear is an important index to measure the performance of the gear transmission, which directly affects the user experience, especially with the gradual electrification of the power source and the high speed of the motor drive, the noise problem of the gear transmission becomes more and more prominent. High-quality design and high-quality utilization have become research hotspots.

In the process of matching and using gears, it has important theoretical value and practical engineering significance to realize the gear transmission of low-noise gears through effective screening. The waviness information of the tooth surface tooth profile is between the macroscopic shape error and the microscopic tooth surface roughness, and is a component that is often ignored in the gear measurement results. High gears have important practical significance. Similarly, gear transmission error is an important indicator to measure the noise level of gear transmission. Therefore, it is of great engineering value to define noise gear screening evaluation indicators based on tooth profile waviness and gear transmission error, and to complete the screening of noisy gears by setting a reasonable threshold.

Contents of the invention

The invention relates to a noise gear screening method based on gear tooth profile waviness information and gear transmission error information. The main technical purpose is to efficiently screen during the production and assembly process based on the acquired gear tooth profile waviness information and gear transmission error information. Noise-producing gears to improve the performance of the product, specifically include the following method steps:

According to the gear tooth profile waviness information and gear transmission error information in the gear measurement results to judge whether the gear is a noise gear, the definition of the noise gear needs to be clarified first. In the actual use of the gear, when the gear transmission noise is too large and does not meet the design requirements or use requirements, the gear can be judged as a noise gear. The generation of noisy gears may be caused by reasons such as gear design, gear manufacturing or gear assembly.

(1) The noise gear is screened by the tooth profile waviness.

The set screening index is as follows: (Includes single tooth profile waviness and gear continuous waviness information)

Set corresponding thresholds according to actual design and usage requirements.

Compare the peak-peak value of the single-tooth profile waviness information with the corresponding threshold, and if the peak-peak value exceeds the threshold, it is judged that the gear under test is a noise gear; Fourier transform is performed on the single-tooth profile waviness information to obtain For its order information, compare the maximum magnitude of its order with the corresponding threshold. If the magnitude of the order exceeds the threshold, it is judged that the gear under test is a noise gear; The average value of the item is compared with the corresponding threshold value. If the average value exceeds the threshold value, it is judged that the gear under test is a noise gear; the average value of the first five items with the highest amplitude of the single-tooth profile waviness information order is compared with the corresponding threshold value. If the average value exceeds the threshold, it is judged that the gear under test is a noisy gear.

Gear transmission is a continuous process, and the generated gear transmission noise is a continuous signal, while the single-tooth tooth surface information is relatively independent, so the next step is to continue the information on the tooth profile waviness of the gear tooth surface. According to the generative principle, the single-tooth tooth profile information of the whole gear is sequentially continuous, and the continuous tooth surface tooth profile information can be obtained. By filtering the information of the tooth surface tooth profile, the waviness information of the tooth surface tooth profile can be obtained. Compare the peak-to-peak value of the continuous tooth profile waviness information with the corresponding threshold, and if the peak-to-peak value exceeds the threshold, it is judged that the measured gear is a noise gear; Fourier transform is performed on the continuous tooth profile waviness information, Its order information can be obtained, and the maximum magnitude of its order is compared with the corresponding threshold. If the magnitude of the order exceeds the threshold, it is judged that the gear under test is a noise gear; Compare the average value of the first three items with the corresponding threshold value, if the average value exceeds the threshold value, it is judged that the gear under test is a noise gear; the average value and corresponding Compared with the threshold value, if the average value exceeds the threshold value, it is judged that the gear under test is a noisy gear.

(2) Screening noisy gears by gear transmission error.

The set filter indicators are as follows:

Gear transmission error information based on theoretical calculations or actual measurements. Compare the peak-to-peak value of the gear transmission error information with the corresponding threshold. If the peak-to-peak value exceeds the threshold, it is judged that the gear under test is a noise gear; Fourier transform is performed on the gear transmission error information to obtain its order information. Compare the maximum magnitude of its order with the corresponding threshold. If the magnitude of the order exceeds the threshold, it is judged that the gear under test is a noise gear; compare the average value of the first three items of the high magnitude of the gear transmission error information with the corresponding threshold , if the average value exceeds the threshold, it is judged that the gear under test is a noise gear; compare the average value of the first five items of gear transmission error information order high amplitude with the corresponding threshold, if the average value exceeds the threshold value, it is judged that the gear under test is a noise gear Noisy gears.

Through the three aspects of single tooth profile waviness information and its order transformation results, continuous tooth profile waviness information and its order transformation results, and gear transmission error information and its order transformation results, these three aspects are compared with the corresponding One-to-one comparison of the thresholds can determine whether the tested gear meets the requirements, thereby screening out the noisy gear.

Compared with the prior art, the technical advantage of the present invention is that the noise gear evaluation index based on the profile waviness of the gear tooth surface and the gear transmission error information is defined, and the index includes: single tooth profile waviness peak-peak, single tooth The highest order amplitude of profile waviness, the average value of the first three items of high order amplitude of single tooth profile waviness, the average value of the first five items of single tooth profile waviness order high amplitude, the peak of continuous tooth profile waviness- Peak value, the highest order amplitude of continuous tooth profile waviness, the average value of the first three items of continuous tooth surface waviness order high amplitude, the average value of the first five items of continuous tooth surface waviness order high amplitude, transmission error peak-to-peak value , the highest amplitude of the transmission error order, the average value of the first three items with the highest transmission error order, and the average value of the first five items with the highest transmission error order. The threshold can be set according to the design and use requirements, and the noisy gears can be efficiently screened out during the production and assembly process to improve the performance of the product.

Description of drawings:

The invention is described in more detail below on the basis of the accompanying drawings, which show a principle example:

Fig. 1 shows the noise gear screening based on the peak-to-peak value of single-tooth profile waviness; (a) the peak-to-peak value is above the threshold; (b) the peak-to-peak value is below the threshold.

Figure 2 shows the screening of noisy gears based on the highest magnitude of the single-tooth profile waviness order; (a) the peak value is above the threshold; (b) the peak value is below the threshold.

Figure 3 shows the noise gear screening based on the average value of the first three high-amplitude items of the single-tooth profile waviness order; (a) the average value of the first three high-amplitude items is higher than the threshold; (b) the average value of the first three high-amplitude items value below the threshold.

Figure 4 shows the noise gear screening based on the average value of the first five high-amplitude items of the single-tooth profile waviness order; (a) the average value of the top five high-amplitude items is higher than the threshold (b) the average value of the top five high-amplitude items below the threshold.

Figure 5 shows the noise gear screening based on the peak-to-peak value of continuous tooth profile waviness; (a) the peak-to-peak value is above the threshold; (b) the peak-to-peak value is below the threshold.

Fig. 6 shows the noise gear screening based on the highest magnitude of waviness order of continuous tooth profile; (a) the peak value is above the threshold (b) the peak value is below the threshold value.

Figure 7 shows the noise gear screening based on the average value of the first three high-amplitude items of continuous tooth surface waviness order; (a) the average value of the first three high-amplitude items is higher than the threshold; (b) the average value of the first three high-amplitude items below the threshold.

Figure 8 shows the noise gear screening based on the average value of the top five high amplitude items of continuous tooth surface waviness order; (a) the average value of the top five high amplitude items is higher than the threshold; (b) the average value of the top five high amplitude items below the threshold.

Figure 9 shows the noise gear screening based on the peak-to-peak transmission error; (a) peak-to-peak value above the threshold (b) peak-to-peak value below the threshold.

Figure 10 shows the screening of noisy gears based on the highest magnitude of transmission error order; (a) peak value above threshold; (b) peak value below threshold value.

Figure 11 shows the noise gear screening based on the average value of the first three items with high magnitude of the transmission error order; (a) the average value of the first three items with high amplitude is higher than the threshold; (b) the average value of the first three items with high amplitude is lower than the threshold .

Figure 12 shows the noise gear screening based on the average value of the first five high-magnitude items of the transmission error order; (a) the average value of the top five high-magnitude items is above the threshold; (b) the average value of the top five high-amplitude items is below the threshold .

Detailed ways

The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

Define noise gear screening indicators based on gear tooth profile waviness information and gear transmission error information. The indicators include: single tooth profile waviness peak-peak value, single tooth profile waviness order highest amplitude, single tooth profile waviness The average value of the first three items of high order amplitude, the average value of the first five items of single tooth profile waviness order high amplitude, the peak-peak value of continuous tooth profile waviness, the highest order amplitude of continuous tooth profile waviness, The average value of the first three high amplitudes of the continuous tooth surface waviness order, the average value of the first five high amplitudes of the continuous tooth surface waviness order high amplitude, the peak value of the transmission error, the highest amplitude of the transmission error order, and the high amplitude of the transmission error order The average value of the first three items, the average value of the first five items of the transmission error order high amplitude.

The Klingelnberg P26 gear measurement center is selected to measure the tooth surface and profile information of each tooth of the gear, and the measurement position of each tooth is the same. The tooth profile information of each tooth surface is filtered to obtain the tooth profile waviness information of each single tooth. Compare the peak-to-peak value of the tooth profile waviness information of each single tooth surface with the corresponding threshold value, if the threshold value is exceeded, it is judged that the measured gear is a noise gear, as shown in Figure 1; the tooth profile waviness information of each single tooth surface is analyzed Fourier transform to obtain its order information. By comparing the highest amplitude of the order with the corresponding threshold, if it exceeds the threshold, it is judged that the gear under test is a noise gear. The schematic diagram is shown in Figure 2; The average value of the first three high amplitude items of the waviness information order is compared with the corresponding threshold value, and if the threshold value is exceeded, it is judged that the gear under test is a noise gear, as shown in Figure 3. The average value of the first five items of the high order amplitude of the single-tooth tooth profile waviness information is compared with the corresponding threshold. If the threshold is exceeded, the tested gear is judged to be a noise gear. The schematic diagram is shown in Figure 4.

According to the generative principle, the single-tooth tooth profile information of the whole gear is sequentially continuous to obtain the continuous tooth surface tooth profile information. Filter the continuous tooth surface tooth profile information to obtain the continuous tooth surface tooth profile waviness information of the entire gear, compare the peak-peak value of the continuous tooth surface tooth profile waviness information with the corresponding threshold, and judge the measured gear if it exceeds the threshold It is a noise gear, the schematic diagram is shown in Figure 5; Fourier transform is performed on the waviness information of the continuous tooth surface, and its order information can be obtained, and the highest amplitude of its order is compared with the corresponding threshold value. If it exceeds the threshold value, it is judged that The gear under test is a noise gear, and the schematic diagram is shown in Figure 6; the average value of the first three items of the continuous tooth profile waviness information order high amplitude is compared with the corresponding threshold, and the gear under test is judged to be a noise gear if the threshold is exceeded. The schematic diagram is shown in Figure 7; the average value of the first five high-order amplitude items of the continuous tooth profile waviness information is compared with the corresponding threshold, and the measured gear is judged to be a noise gear if the threshold is exceeded, as shown in Figure 8.

Use the gear transmission error measurement test bench to combine the measured gear with the standard gear to obtain the measured transmission error information, or construct its model through the actual measurement results of the measured gear, and combine the gear model constructed based on the measured data with the standard involute gear. Cooperate with the transmission and calculate its transmission error. Based on the transmission error data measured by calculation or test, the peak-to-peak value of the gear transmission error information is compared with the corresponding threshold, and if the threshold is exceeded, it is judged that the measured gear is a noise gear, as shown in Figure 9; the gear transmission error information is Fourier transform, its order information can be obtained, and the highest amplitude of its order is compared with the corresponding threshold value. If it exceeds the threshold value, it is judged that the measured gear is a noise gear. The schematic diagram is shown in Figure 10; the gear transmission error information order The average value of the first three items with the second highest amplitude is compared with the corresponding threshold. If the threshold is exceeded, it is judged that the gear under test is a noise gear, as shown in Figure 11; the average of the first five items with the highest amplitude of the gear transmission error information The value is compared with the corresponding threshold, and if it exceeds the threshold, it is judged that the gear under test is a noise gear, as shown in Figure 12.

Claims (1)

1. A noise gear screening method based on tooth profile waviness information and gear transmission error information, characterized in that: Concretely include the following method steps: According to the gear tooth profile waviness information and gear transmission error information in the gear measurement results to judge whether the gear is a noise gear, it is first necessary to clarify the definition of the noise gear; in the actual use of the gear, when the gear transmission noise is too large, it does not meet the design requirements or usage requirements, the gear can be judged as a noise gear; (1) Screening noise gears by tooth profile waviness; The set screening index: contains the information of single tooth profile waviness and gear continuous waviness; single tooth profile waviness includes peak-peak value, order maximum amplitude, average value of the first three items of order high amplitude, order The average value of the first five items of high amplitude; the continuous waviness of the gear includes peak-to-peak value, the maximum amplitude of the order, the average value of the first three items of the high amplitude value of the order, and the average value of the first five items of the high amplitude value of the order; Set corresponding thresholds according to actual design and usage requirements; Compare the peak-peak value of the single-tooth profile waviness information with the corresponding threshold, and if the peak-peak value exceeds the threshold, it is judged that the gear under test is a noise gear; Fourier transform is performed on the single-tooth profile waviness information to obtain For its order information, compare the maximum magnitude of its order with the corresponding threshold. If the magnitude of the order exceeds the threshold, it is judged that the gear under test is a noise gear; The average value of the item is compared with the corresponding threshold value. If the average value exceeds the threshold value, it is judged that the gear under test is a noise gear; the average value of the first five items with the highest amplitude of the single-tooth profile waviness information order is compared with the corresponding threshold value. If the average value exceeds the threshold, it is judged that the gear under test is a noise gear; Gear transmission is a continuous process, and the generated gear transmission noise is a continuous signal, while the single-tooth tooth surface information is independent, so it is necessary to continue the tooth profile waviness information of the gear tooth surface; according to the generation principle, the entire gear The tooth profile information of the single tooth surface is continuous sequentially, and the continuous tooth surface tooth profile information can be obtained; the continuous tooth surface tooth profile information can be filtered to obtain the waviness information of the tooth surface tooth profile; the continuous tooth surface tooth profile waviness The peak-to-peak value of the information is compared with the corresponding threshold value. If the peak-to-peak value exceeds the threshold value, it is judged that the gear under test is a noise gear; the continuous tooth profile waviness information is subjected to Fourier transform to obtain its order information, and its The maximum magnitude of the order is compared with the corresponding threshold. If the magnitude of the order exceeds the threshold, it is judged that the gear under test is a noise gear; the average value and corresponding Threshold value is compared, if the average value exceeds the threshold value, it is judged that the gear under test is a noise gear; the average value of the first five items of the continuous tooth profile waviness information order high amplitude is compared with the corresponding threshold value, if the average value exceeds the threshold value , then it is judged that the gear under test is a noise gear; (2) Screen noise gears through gear transmission errors; The set filter index gear transmission error includes peak-to-peak value, maximum amplitude of order, average value of the first three items of high order amplitude and average value of the first five items of high order amplitude; Based on theoretical calculation or actual measurement of gear transmission error information; compare the peak-to-peak value of the gear transmission error information with the corresponding threshold, if the peak-to-peak value exceeds the threshold, it is judged that the measured gear is a noise gear; the gear transmission error information is calculated Lie transform, its order information can be obtained, and the maximum magnitude of its order is compared with the corresponding threshold. If the magnitude of the order exceeds the threshold, it is judged that the gear under test is a noise gear; The average value of the first three items of the gear transmission error information is compared with the corresponding threshold value. If the average value exceeds the threshold value, it is judged that the gear under test is a noise gear; the average value of the first five items of the high amplitude value of the gear transmission error information is compared with the corresponding threshold value. If the average value exceeds the threshold, it is judged that the gear under test is a noise gear; Through the three aspects of single tooth profile waviness information and its order transformation results, continuous tooth profile waviness information and its order transformation results, and gear transmission error information and its order transformation results, these three aspects are compared with the corresponding Thresholds are compared one by one to judge whether the tested gear meets the requirements, so as to screen out the noisy gear.

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