A static test method for one-dimensional transmission system error

Abstract

The present invention provides a static error test method for a one-dimensional transmission system, which specifically includes: power transmission error detection and data transmission error detection steps; wherein, the power transmission error detection specifically includes the following steps: Step 101: using a crank as a power input shaft, and setting a first polyhedron on the power output shaft, the number of faces of the first polyhedron is 2n, and n is an integer greater than 0; Step 102: after turning the crank, the actual rotation value A1 of the power output shaft is detected by the first autocollimator, and the theoretical rotation value B1 of the power output shaft is calculated according to the theoretical traditional ratio of the power input shaft to the power output shaft, and the error value D1=A1-B1; Step 103: rotating the crank at a fixed angle. The present invention can solve the technical problems in the prior art that the encoder is used to perform dynamic test indicators that are unqualified and the problem cannot be directly found and eliminated, and the error detection accuracy is not high.

Description

Technical Field

[0001] The invention relates to the technical field of turntable testing, and in particular to a static testing method for errors of a one-dimensional transmission system. Background Art

[0002] The existing dynamic test instruments are complex and are rarely used in actual engineering measurements. The dynamic test process has many intermediate links, many error-affecting links, and a complex process. Dynamic testing involves components such as motors, reducers, and encoders (data acquisition).

[0003] In the turntable structure, the turntable is generally driven to rotate by an input shaft, and the detection of the turntable rotation angle is achieved by a set encoder; however, in actual use, the turntable has a certain precision error. When the actual rotation angle of the turntable is detected by the encoder, it is impossible to determine whether the detection error is caused by the turntable error or the encoder itself. When the dynamic test indicators of the encoder are unqualified, the problem cannot be directly discovered and eliminated, and the error detection accuracy is not high. Summary of the invention

[0004] The purpose of the present invention is to provide a static testing method for one-dimensional transmission system errors, which can solve the technical problems in the prior art that when the dynamic test indicators using encoders are unqualified, the problem cannot be directly discovered and eliminated, and the error detection accuracy is not high.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] A one-dimensional transmission system error static test method specifically includes: power transmission error detection and data transmission error detection steps;

[0007] The power transmission error detection specifically includes the following steps:

[0008] Step 101: using a crank as a power input shaft, and setting a first polyhedron on the power output shaft, the number of faces of the first polyhedron is 2n, where n is an integer greater than 0;

[0009] Step 102: After turning the crank, the actual rotation value A1 of the power output shaft is detected by a first autocollimator, and at the same time, the theoretical rotation value B1 of the power output shaft is calculated according to the theoretical conventional ratio of the power input shaft to the power output shaft, and the error value D1 = A1-B1;

[0010] Step 103: Rotate the crank at a fixed angle, and repeat step 102, and sum up the error values ​​D1 obtained by repeating step 102 to obtain the maximum value to obtain the power transmission error detection value;

[0011] Data transmission error detection specifically includes the following steps:

[0012] Step 201: using the actual rotation value of the power output shaft as an input value, driving a digital output shaft connected to the power output shaft to rotate, and setting a second polyhedron on the digital output shaft, and setting a second autocollimator for detecting the actual rotation value of the digital output shaft;

[0013] Step 202: Calculate the theoretical rotation value B2 of the power output shaft according to the theoretical conventional ratio between the power output shaft and the digital output shaft, obtain the actual rotation value A2 of the digital output shaft after taking the actual rotation value of the power output shaft as the input value through a second autocollimator; and calculate the error value D2=A2-B2;

[0014] Step 203: Using the actual output rotation value of the power output shaft in step 103 as the output value, repeat step 202, and summarize the error values ​​D2 obtained by repeating step 202 to obtain the maximum value to obtain the data transmission error.

[0015] The number of faces of the first polyhedron and the second polyhedron are the same or different.

[0016] Furthermore, the number of faces of the first polyhedron is twice the number of faces of the second polyhedron.

[0017] Preferably, the fixed angle in step 103 is specifically C=360° / 2n.

[0018] Furthermore, n=6, the fixed angle is specifically C=30°, and the specific values ​​of the crank rotation are: 30°, 60°, 90°, 120°, 150°, 180°, 210°, 240°, 270°, 300°, 330°, 360° (0°).

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The present invention realizes error detection through transmission error detection and data transmission error detection steps, takes a crank as an input end, and realizes measurement of the theoretical output value and the actual output value of the power output shaft, and realizes multi-point detection, and summarizes the multi-point error values ​​and takes the maximum value, the more angle points are measured, the closer the result can be to the dynamic measurement error; and at the same time, adopts a crank method, takes the actual output value of the power output shaft as the actual input value, and takes the difference between the theoretical output value and the actual output value of the detection cycle to obtain the error, and summarizes all errors and takes the maximum value to obtain the data transmission error; in actual use, the present invention realizes power transmission error detection and data transmission error detection of the turntable by static testing, which can effectively improve the error detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is the overall principle diagram of the present invention.

[0023] Figure 2 This is a test block diagram of power transmission accuracy test 1 of the present invention.

[0024] Reference numerals:

[0025] 101 - crank, 102 - power input shaft, 103 - first polyhedron, 104 - second polyhedron, 105 - power output shaft, 106 - first autocollimator, 107 - second autocollimator, 108 - data transmission output shaft. DETAILED DESCRIPTION

[0026] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the embodiments of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0027] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0028] See also Figure 1 ,This embodiment discloses a one-dimensional transmission system error static test method, which specifically includes: power transmission error detection and data transmission error detection steps;

[0029] The power transmission error detection step specifically includes the following steps:

[0030] Step 101: using a crank 101 as a power input shaft 102, and setting a first polyhedron 103 on a power output shaft 105, wherein the number of faces of the first polyhedron 103 is 2n, where n is an integer greater than 0;

[0031] Step 102: After turning the crank 101, the actual rotation value A1 of the power output shaft 105 is detected by the first autocollimator 106, and at the same time, the theoretical rotation value B1 of the power output shaft 105 is calculated according to the theoretical traditional ratio of the power input shaft 102 to the power output shaft 105, and the error value D1 = A1-B1; in actual use, the absolute value is taken;

[0032] Step 103: Rotate the crank 101 at a fixed angle, and repeat step 102, and sum up the error values ​​D1 obtained by repeating step 102 to obtain the maximum value to obtain the power transmission error detection value;

[0033] Data transmission error detection specifically includes the following steps:

[0034] Step 201: using the actual rotation value of the power output shaft 105 as an input value, driving the digital output shaft 108 connected to the power output shaft 105 to rotate, and setting a second polyhedron 104 on the digital output shaft 108, and setting a second autocollimator 107 for detecting the actual rotation value of the digital output shaft 108;

[0035] Step 202: Calculate the theoretical rotation value B2 of the power output shaft 105 according to the theoretical conventional ratio between the power output shaft 105 and the digital output shaft 108, obtain the actual rotation value A2 of the digital output shaft 108 after taking the actual rotation value of the power output shaft 105 as the input value through the second autocollimator 107; and calculate the error value D2=A2-B2; take the absolute value in actual use;

[0036] Step 203: Using the actual output rotation value of the power output shaft 105 in step 103 as the output value, repeat step 202, and summarize the error values ​​D2 obtained by repeating step 202 to obtain the maximum value to obtain the data transmission error.

[0037] In actual use, the number of faces of the first polyhedron 103 and the second polyhedron 104 are the same or different.

[0038] The fixed angle in step 103 is specifically C=360° / 2n.

[0039] As an option, the number of faces of the first polyhedron 103 is twice the number of faces of the second polyhedron 104 .

[0040] In this embodiment, n=6 in the first polyhedron 103 and the second polyhedron 104, the fixed angle is specifically C=30°, and the specific values ​​of the rotation of the crank 101 are: 30°, 60°, 90°, 120°, 150°, 180°, 210°, 240°, 270°, 300°, 330°, 360° (0°).

[0041] As an option, n=12, the fixed angle is C=15°, and the specific values ​​of the crank rotation are: 15°, 30°, 45°, 60°, 75°, 90°, 105°, 120°, 135°, 150°, 165°, 180°, 195°, 210°, 225°, 240°, 255°, 270°, 285°, 300°, 315°, 330°, 345°, 360° (0°).

[0042] In actual use, in order to improve the detection progress, as many detection points as possible should be set to improve the detection accuracy.

[0043] The present invention realizes error detection through transmission error detection and data transmission error detection steps, takes the crank 101 as the input end, and realizes the measurement of the theoretical output value and the actual output value of the power output shaft 105, and realizes multi-point detection, and the error values ​​are summarized and the maximum value is taken. The more angle points are measured, the closer the result can be to the dynamic measurement error; and at the same time, the crank 101 is adopted, and the actual output value of the power output shaft 105 is taken as the actual input value, and the theoretical output value and the actual output value of the detection week are subtracted to obtain the error, and all errors are summarized and the maximum value is taken to obtain the data transmission error; in actual use, the present invention realizes power transmission error detection and data transmission error detection of the turntable by static testing, which can effectively improve the error detection accuracy.

[0044] In order to facilitate those skilled in the art to further understand the present invention, the present invention is further described below in conjunction with some implementation cases.

[0045] Test 1, such as Figure 2 As shown, the first autocollimator 106 is specifically an optical comparison goniometer, the first polyhedron 103 is a 24-faceted prism, and the power input shaft 102 is a motor shaft assembly.

[0046] The specific experimental equipment list is as follows:

[0047] Serial number name model Accuracy Remark 1 Regular polyhedron 24 sides Level 1 2 Optical Comparison Goniometer JZ ≤6″ 3 Motor shaft assembly / / 4 Crank handle, dial / /

[0048] The specific test steps are as follows:

[0049] a. Install the indexing plate, crank handle and pointer on the power input end of the azimuth transmission chain of the azimuth transmission seat (the end of the motor shaft assembly).

[0050] b. Install a regular polyhedron at the power output end of the power transmission chain at the azimuth transmission seat.

[0051] c. Place an optical comparison goniometer on a platform outside the azimuth transmission seat.

[0052] d. When the crank is shaken clockwise and counterclockwise to 0°, 30°, 60°, 90°, 120°, 150°, 180°, 210°, 240°, 270°, 300°, 330°, 360° (0°) respectively, use an optical comparison goniometer to align the reflection readings of the regular polyhedron at the end, and take the one with the largest clockwise and counterclockwise errors as the main motion accuracy test result.

[0053] The specific rotation data are as follows:

[0054]

[0055] Test 2, such as Figure 1 As shown, the first polyhedron 103 is a 12-sided prism, and the second polyhedron 104 is a 24-sided prism.

[0056] The specific equipment list is as follows:

[0057] Serial number name model Accuracy Remark 1 The second polyhedron 24 sides Level 1 2 The first polyhedron 12 sides Level 1 3 The first autocollimator JZ1 ≤6″ 4 Second first autocollimator JZ ≤6″ 5 Motor shaft assembly / /

[0058] The specific test steps are as follows:

[0059] a. Fix the transmission seat on the detection frame, and install the dividing plate, crank handle and pointer on the power input end (motor shaft end) of the initial stage of the azimuth transmission chain of the azimuth transmission seat.

[0060] b. Install a regular polyhedron (12 faces) and a regular polyhedron (24 faces) at the power output end of the azimuth transmission seat and the output end of the data transmission chain respectively.

[0061] c. An optical comparison goniometer is mounted on the transmission seat and on the outer platform of the transmission seat.

[0062] d. When the crank is turned to the power output standards of 0°, 30°, 60°, 90°, 120°, 150°, 180°, 210°, 240°, 270°, 300°, and 360° (0°), an optical comparison goniometer is used to align the reflection readings of the regular polyhedron at the end. The difference between the actual rotation angle at the end of the data transmission chain and the theoretical output angle is the data transmission accuracy error.

[0063] The test data is as follows:

[0064]

[0065]

[0066] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0067] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. It should be pointed out that any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A one-dimensional transmission system error static test method, characterized in that: Specifically include: Power transmission error detection and data transmission error detection steps; The power transmission error detection specifically includes the following steps: Step 101: using a crank as a power input shaft, and setting a first polyhedron on the power output shaft, the number of faces of the first polyhedron is 2n, where n is an integer greater than 0; Step 102: After turning the crank, the actual rotation value A1 of the power output shaft is detected by a first autocollimator, and at the same time, the theoretical rotation value B1 of the power output shaft is calculated according to the theoretical conventional ratio of the power input shaft to the power output shaft, and the error value D1=A1-B1; Step 103: Rotate the crank at a fixed angle, and repeat step 102, and sum up the error values ​​D1 obtained by repeating step 102 to obtain the maximum value to obtain the power transmission error detection value; Data transmission error detection specifically includes the following steps: Step 201: using the actual rotation value of the power output shaft as an input value, driving a digital output shaft connected to the power output shaft to rotate, and setting a second polyhedron on the digital output shaft, and setting a second autocollimator for detecting the actual rotation value of the digital output shaft; Step 202: Calculate the theoretical rotation value B2 of the power output shaft according to the theoretical conventional ratio of the power output shaft to the digital output shaft, and obtain the actual rotation value A2 of the digital output shaft after taking the actual rotation value of the power output shaft as the input value through a second autocollimator; And calculate the error value D2=A2-B2; Step 203: using the actual output rotation value of the power output shaft in step 103 as the output value, repeating step 202, summing up the error values ​​D2 obtained by repeating step 202 and obtaining the maximum value to obtain the data transmission error; The fixed angle in step 103 is specifically C=360° / 2n.

2. A one-dimensional transmission system error static test method according to claim 1, characterized in that: The first polyhedron and the second polyhedron have the same or different numbers of faces.

3. A one-dimensional transmission system error static testing method according to claim 2, characterized in that: The number of faces of the first polyhedron is twice the number of faces of the second polyhedron.

4. A one-dimensional transmission system error static test method according to claim 1, characterized in that: n=6, the fixed angle is C=30°, and the specific values ​​of the crank rotation are: 0°, 30°, 60°, 90°, 120°, 150°, 180°, 210°, 240°, 270°, 300°, 330°, 360°.

5. A one-dimensional transmission system error static test method according to claim 1, characterized in that: n=12, the fixed angle is C=15°, and the specific values ​​of the crank rotation are: 0°, 15°, 30°, 45°, 60°, 75°, 90°, 105°, 120°, 135°, 150°, 165°, 180°, 195°, 210°, 225°, 240°, 255°, 270°, 285°, 300°, 315°, 330°, 345°, and 360°.

Images