CN104807631A - Precision speed reducer transmission error test system - Google Patents

Abstract

The invention discloses a precision speed reducer transmission error test system and is applied to the field of a measuring technology of the transmission precision of a high-precision transmission apparatus. The system comprises a precision speed reducer test apparatus and a test software system. The precision speed reducer transmission error test system is mainly characterized in that corner signals of the input end and the output end of a speed reducer are respectively measured by use of two high-precision circular rasters and are transmitted to a computer through a data acquisition card. Test software acquires data through multiple communication protocols, coverts the corner of the input end to the output end through a transmission ratio, performs subtraction with the actually measured corner of the output end and obtains a transmission error. The test system provided by the invention is simple and effective, and is high in measuring precision and high in work reliability. The test apparatus can be used for transmission error testing of precision speed reducers with different types and specifications, the arrangement installation is flexible, the measuring precision is high, and the application scope is wide.

Description

Precision reducer transmission error test system

Technical field

The invention relates to a test system for detecting the transmission error of a precision reducer, which is applied in the technical field of transmission precision measurement of high-precision transmission devices.

Background technique

Due to the influence of manufacturing error, assembly error, tooth side clearance, bearing clearance and other factors of the precision reducer, there is a corner error in the transmission process of the transmission chain from the input end of the reducer to the output end, which affects the transmission accuracy of the entire transmission system. It is very important and necessary to establish a simple and effective precision test system that can accurately detect the transmission error of the precision reducer. In view of the fact that the current means and methods for testing the transmission error of the precision reducer are not effective enough, the present invention provides a simple, effective and accurate high-precision testing system for measuring the transmission error of the precision reducer.

Contents of the invention

The technical solution adopted by the present invention to solve the technical problem is: a test system for precision reducer transmission error, which is characterized in that: it includes a precision reducer test experiment device and a test software system; the precision reducer test experiment device includes: Test bench, precision guide rail base, two circular grating brackets, reducer bracket, two precision circular gratings, two precision elastic couplings, pulleys, belts, speed-regulating motors, tested reducers, input flanges, output flange shaft; the reducer is fixed on the reducer bracket; the two precision circular gratings are respectively fixed on the circular grating brackets at the left and right ends; the circular grating bracket and the reducer bracket are respectively placed on the precision guide rail base , the distance between the three brackets can be adjusted along the precision guide rail, which can always ensure the parallelism and coaxiality of the three. The angle data of the input and output terminals of the tested reducer; the test software system uses the data acquisition card to utilize the external communication protocol widely used in the computer to obtain the acquisition data of the circular grating in real time, input it into the computer, and through the data processing algorithm in the software, Convert the rotation angle collected at the input terminal to the output terminal through the transmission ratio, and make a difference with the actual rotation angle collected at the output terminal to calculate the transmission error and draw the transmission error curve, which can determine the transmission of one motion cycle of the tested reducer. The maximum value of the error, and save the experimental test data.

The beneficial effects of the present invention are: the transmission error test system of the precision reducer collects the rotation angle data of the input and output terminals of the tested reducer online, and calculates the transmission error through the test software to generate a transmission error curve; the precision of the precision circular grating can reach Within ±2 arc seconds, high-precision transmission error testing can be realized. The distance between the three supports can be adjusted along the precision guide rail, which is suitable for transmission error testing of reducers of different models and specifications.

Description of drawings

Figure 1 is the installation layout diagram (front view) of the transmission error test system.

Figure 2 is the overall layout (top view) of the transmission error testing system.

Figure 3 is a transmission error curve diagram of a motion cycle of the tested reducer.

In Figure 1 and Figure 2, 1 left circular grating, 2 left circular grating bracket, 3 precision elastic coupling, 4 pulley, 5 input flange, 6 input shaft, 7 reducer bracket, 8 tested reducer, 9 Speed-regulating motor, 10 output end flange shaft, 11 right circular grating support, 12 right circular grating, 13 precision guide rail base.

Detailed ways

The specific embodiment of the present invention is described in detail below in conjunction with accompanying drawing:

As shown in Figure 1, the left circular grating support 2, the right circular grating support 11 and the measured reducer support 7 are installed on the precision guide rail base 13 respectively, and the distance between the three supports can be adjusted along the precision guide rail, which can always ensure the three. Parallelism and coaxiality; the left circular grating 1 is installed on the left circular grating bracket 2 and connected; the input shaft 6 of the tested reducer is connected to the input flange 5 through a bearing and a retaining ring; the left circular grating 1 and the input shaft 6 are connected through a precision The elastic coupling 3 is connected, and the elastic coupling can eliminate the error caused by a certain amount of misalignment; the pulley 4 is connected with the input shaft 6 through a key; the pulley 4 is connected with the speed regulating motor 9 through a belt; the input end The flange 5 is connected to the tested reducer bracket 7 by screws; the tested reducer 8 is connected to the tested reducer bracket 7 by screws; the input shaft 6 is connected to the tested reducer input shaft by a jacking screw; the output flange shaft 10 is connected with the output disk of the tested reducer 8; the output flange shaft 10 is connected with the right circular grating 12 through the precision elastic coupling 3; the right circular grating 12 is installed on the right circular grating bracket 11; when measuring, adjust The high-speed motor drives the pulley to rotate through the belt, and then drives the input shaft to start running. The input shaft transmits the motion to the left circular grating to the left, and transmits the motion to the reducer to the right. After deceleration, it is transmitted to the right circular grating; The corner signal is measured, and the corner signal is input into the computer through the currently widely used data acquisition card, and the collected data is obtained by using the communication protocol interface widely used in the computer. Develop a Windows-based multi-communication protocol transmission error testing software. The system includes a main control module, a data acquisition module, a data storage module, a data reading module, a data processing module and a data display module. It is capable of real-time calculation of measurement data errors and display of error curves , data filtering, parameter setting, storage test data, test data time domain analysis, test data correlation analysis, test data spectrum analysis and other functions.

Within the scope described in the claims, modifications and deformations that can be made by those skilled in the art without creative efforts still belong to the protection scope of this patent.

Claims (4)

1. an accurate retarding machine drive error testing system, it is characterized in that: left Circular gratings (1), tested reductor (8), right Circular gratings (12) is arranged on same precise guide rail base (13), left Circular gratings (1) and right Circular gratings (12) connect tested reductor (8) input end and output terminal respectively by accurate spring coupling, the angular signal that Circular gratings is measured is input to computing machine by data collecting card, by the testing software of independent development, the signal collected is processed, calculate driving error, draw driving error curve map, and preserve test data of experiment.

2. drive error testing system according to claim 1, it is characterized in that: left Circular gratings (1), tested reductor (8), right Circular gratings (12) are separately fixed on three supports, these three supports are positioned on same precise guide rail base (13), the distance of three supports can adjust along guide rail, can ensure the depth of parallelism and the right alignment of three.

3. drive error testing system according to claim 1, is characterized in that: utilize buncher to drive tested reductor (8) to operate by V belt translation, and running is stable, not obliterated data when the V belt translation of low-speed stable ensures signals collecting.

4. drive error testing system according to claim 1, it is characterized in that: develop the testing software based on Windows operating system, by multi-communication agreement interface image data, the corner collected by input end converts output terminal by ratio of gear, the corner collected with output terminal is poor, draw driving error curve map, determined the driving error maximal value of a period of motion by it.