CN111174673A - RV speed reducer idle running backlash and torsional rigidity testing arrangement - Google Patents
RV speed reducer idle running backlash and torsional rigidity testing arrangement Download PDFInfo
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- CN111174673A CN111174673A CN202010105811.3A CN202010105811A CN111174673A CN 111174673 A CN111174673 A CN 111174673A CN 202010105811 A CN202010105811 A CN 202010105811A CN 111174673 A CN111174673 A CN 111174673A
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- speed reducer
- shaft
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/14—Measuring arrangements characterised by the use of mechanical techniques for measuring distance or clearance between spaced objects or spaced apertures
- G01B5/16—Measuring arrangements characterised by the use of mechanical techniques for measuring distance or clearance between spaced objects or spaced apertures between a succession of regularly spaced objects or regularly spaced apertures
- G01B5/166—Measuring arrangements characterised by the use of mechanical techniques for measuring distance or clearance between spaced objects or spaced apertures between a succession of regularly spaced objects or regularly spaced apertures of gear teeth
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
- G01M5/0075—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by means of external apparatus, e.g. test benches or portable test systems
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/26—Investigating twisting or coiling properties
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- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention relates to a device for testing backlash and torsional rigidity of an RV reducer, which comprises a rack, a fixed seat, a supporting sleeve, a dial indicator, a testing arm, a flange shaft and a force arm with a ratchet wheel, wherein the rack is fixedly arranged on the rack; the fixed seat is fixed with a speed reducer, an input shaft of the speed reducer is sleeved in the supporting sleeve, connected with the central transmission shaft and driven by the rocking wheel, and the input shaft of the speed reducer is fastened at a test position; the dial plate is fixed on the fixed seat, an annular groove of the dial plate and an output shaft of the speed reducer are coaxial, and the dial indicator can move and be fixed along the annular groove of the dial plate; the flange shaft is connected with an output shaft of the speed reducer, the testing arm is connected with the flange shaft, the other end of the testing arm is connected with the dial indicator, the force arm with the ratchet wheel applies positive and negative force to the flange shaft through the ratchet wheel device to enable the output shaft of the speed reducer to rotate correspondingly, and the dial indicator reads positive and negative swing values of the testing arm and fixed length distance calculation of the testing arm to form a structure for detecting idle stroke return difference and torsional rigidity of the speed reducer. Has the advantages of simple structure, convenience and accuracy.
Description
Technical Field
The invention relates to a device for testing backlash and torsional rigidity of an RV reducer.
Background
With the development of industrial automation, the use of industrial robots to replace human work has become an important development direction. The demand for robots in China is increased at a high speed every year, a speed reducer serving as one of three large core components of an industrial robot is produced in large batches in China, and in order to check that each batch of produced speed reducers can completely meet various performance parameters and guarantee the qualified delivery, the performance parameters need to be tested. Backlash, namely return difference and torsional rigidity of the RV reducer are main precision indexes of the reducer. For the detection of these indexes, the laser interferometer is used for measurement in the current general method. The method needs precise instruments, has high calibration and installation requirements every time of measurement, and is long in time consumption and high in cost. The detection mode is obviously not suitable for the requirements of mass production of the speed reducer and full detection of the data.
Disclosure of Invention
In order to solve the difficulty of testing the idle running backlash and the torsional rigidity of the RV reducer in the prior art, the invention designs the test device for the idle running backlash and the torsional rigidity of the RV reducer, which has the advantages of simple structure, detection time reduction, cost reduction, convenience and accuracy.
The invention comprises a frame, a fixed seat, a supporting sleeve, a dial indicator, a testing arm, a flange shaft and a force arm with a ratchet wheel; the fixed seat is fixed with a speed reducer to be tested and is arranged on the rack, the supporting sleeve is fixed on the rack, an input shaft of the speed reducer is sleeved in the supporting sleeve and is connected with the central transmission shaft, the central transmission shaft is sleeved in a shaft sleeve fixed on the rack and is driven by the rocking wheel, and the rocking wheel is rotated to form a structure which enables the speed reducer to stop at a testing position; the supporting sleeve is transversely provided with a fastening screw capable of fastening an input shaft of the speed reducer in a penetrating way to form a structure for fastening the input shaft of the speed reducer at a test position; the dial plate is fixed on the outer ring of the fixing seat, the dial plate is provided with an annular groove, the annular groove and an output shaft of the speed reducer are coaxial, the annular groove is provided with a dial indicator which can move along the annular groove through the dial frame, and the dial indicator is fixed in position at a test position through a dial frame fastener; the flange shaft is connected with an output shaft of the speed reducer, one end of the testing arm is fixed on the flange shaft, the other end of the testing arm is connected with the dial indicator, and the fixed-length distance of the testing arm is formed from the center of the dial indicator to the shaft center of the output shaft of the speed reducer; the force arm with the ratchet wheel is sleeved on the flange shaft, positive and negative forces are applied to the flange shaft through the ratchet wheel device of the force arm with the ratchet wheel device to enable the output shaft of the speed reducer to correspondingly rotate, and the positive and negative swing values of the testing arm and the fixed length distance of the testing arm are read through the dial indicator to calculate, so that a structure for detecting idle stroke return difference and torsional rigidity of the speed reducer is formed.
According to the dial plate testing device, the annular groove arranged in the dial plate is an annular T-shaped groove, the dial frame is provided with the screw, the dial frame fastening piece is provided with the nut, and the dial indicator can move 360 degrees along the annular T-shaped groove through the screw and can be fixed at a testing position through the nut.
According to the invention, the shaft sleeve sleeved with the central transmission shaft is provided with a bearing.
The invention has the following advantages:
1) the testing device has a simple structure and does not need complex electronic equipment matching;
2) the mechanical mounting table with a simple structure is suitable for field detection of assembly lines in mass production, and the detection time and cost are reduced;
3) the backlash and torsional rigidity return difference value of the precision speed reducer are generally less than +/-30', so that the error between the positive and negative swing value straight line and the arc length of the test arm can be ignored, and the detection is reliable and accurate;
4) the output shaft of the speed reducer can be stopped at any position through the rocking wheel, the dial plate is provided with a 360-degree annular groove, the dial indicator can move circumferentially around the RV speed reducer to be detected, and the detection is convenient.
The following examples are provided to further illustrate the present invention in conjunction with the description of the figures.
Drawings
FIG. 1 is a front view schematic diagram of one embodiment of the present invention;
fig. 2 is a schematic top view of the embodiment of fig. 1.
In the figure, 1, a frame; 2. a support; 3. a fixed seat; 4. a support sleeve; 5. a shaft sleeve; 6. a dial plate; 7. a dial indicator; 8. a test arm; 9. a flange shaft; 10. a force arm with a ratchet wheel; 11. a speed reducer; 12. an output shaft of the reducer; 13. an input shaft of the reducer; 14. a central drive shaft; 15. shaking the wheel; 16. tightening the screw rod; 17. an annular groove; 18. a screw; 19. a bearing; 20. a nut; b. and (5) fixing the length.
Detailed Description
Referring to fig. 1 and 2, the present embodiment is a device for testing backlash and torsional rigidity of an RV reducer, and the device includes a rack 1, a fixed seat 3, a supporting sleeve 4, a dial 6, a dial indicator 7, a testing arm 8, a flange shaft 9, and a moment arm 10 with a ratchet; the fixed seat is supported on a support 2 of the frame, the fixed seat is fixed with a speed reducer 11 to be tested, the supporting sleeve is fixed on the frame, an input shaft 13 of the speed reducer is sleeved in the supporting sleeve and connected with a central transmission shaft 14, the central transmission shaft is sleeved in a shaft sleeve 5 fixed on the frame and driven by a rocking wheel 15, the shaft sleeve sleeved with the central transmission shaft is provided with a bearing 19, and the rocking wheel is rotated to form a structure for stopping the speed reducer at a testing position; two fastening screws 16 capable of fastening the input shaft of the speed reducer are transversely arranged in the supporting sleeve in a penetrating way to form a structure for fastening the input shaft of the speed reducer at a test position; the annular dial plate is fixed on the outer ring of the fixing seat, an annular groove 17 is formed in the dial plate, the annular groove 17 is an annular T-shaped groove, the annular T-shaped groove and the output shaft 12 of the speed reducer are coaxial, the dial indicator frame is a screw 18, the dial indicator can move 360 degrees along the annular T-shaped groove through the screw, and a dial indicator frame fastener, namely a nut 20, is screwed when in a testing position; the flange shaft is connected with an output shaft of the speed reducer, one end of the testing arm is fixed on the flange shaft, the other end of the testing arm is connected with the dial indicator, and the fixed-length distance b of the testing arm is formed from the center of the dial indicator to the shaft center of the output shaft of the speed reducer; the force arm with the ratchet wheel is sleeved on the flange shaft, positive and negative forces are applied to the flange shaft through the ratchet wheel device of the force arm with the ratchet wheel device to enable the output shaft of the speed reducer to correspondingly rotate, and the positive and negative swing values of the testing arm and the fixed length distance of the testing arm are read through the dial indicator to calculate, so that a structure for detecting idle stroke return difference and torsional rigidity of the speed reducer is formed.
According to the invention, the screw is arranged in the annular T-shaped groove to be used as the meter frame, and the meter frame can be fixed by screwing the nut through the matching of the screw and the nut, so that the use is very convenient. The force arm with the ratchet wheel is equivalent to a ratchet wheel wrench which can apply positive and negative force, the magnitude of the applied positive and negative force is determined by the standard testing force specified by the speed reducer, and a standard dynamometer or a precision sensor is generally adopted. The force arm with the ratchet wheel can work at the same position due to the ratchet wheel device, so that the same dynamometer is convenient to use, and the speed reducer can be rotated to any position for testing.
The invention has the following use and operation:
the speed reducer 11 to be tested is fastened on the fixed seat 3, then the flange shaft 9 is fastened on an output shaft 12 of the speed reducer, a ratchet force arm 10 is arranged on the flange shaft sleeve, positive and negative force can be applied to the ratchet force arm due to the ratchet device, a test arm 8 with a fixed length distance of b is further arranged on the flange shaft, the value of b is a fixed value, generally speaking, the fixed value is 165mm, a rocking wheel 15 and a precise central transmission shaft 14 are arranged on the test device, the central transmission shaft is connected with an input shaft 13 of the speed reducer, the input shaft of the speed reducer and the supporting sleeve 4 need to be coaxially and precisely sleeved and matched, a dial 6 with an annular T-shaped groove is fastened on the fixed seat 3, and the annular dial is provided with a screw 18 and a dial indicator 7. During the test operation, the tightening screw 16 can be loosened, the rocking wheel is rotated to stop the output shaft of the speed reducer at any position, after the tightening screw is tightened, the dial indicator is aligned to a fixed detection point on the test arm and a dial indicator frame in the normal direction, the positive and negative direction force specified by the ratchet wheel force arm is detected, the test arm with the fixed length distance b has a corresponding swing value +/-a, the a value is the reading of the dial indicator, the backlash and torsional rigidity return difference value of the precision speed reducer are considered to be less than +/-30', the error between the straight line and the arc length of the positive and negative swing value a of the test arm is ignored, the rotation angle under the external torque, namely the corresponding rotation angle of the output shaft of the speed reducer can be calculated by calculating the a/b value, the backlash return difference and the torsional rigidity of the speed reducer at any angle position within the range of 360 degrees can be measured by the method, and convenience.
According to the invention, the meter frame is immobile when positive and negative force is applied to measure each time, so that positive and negative values can be accurately displayed, when a test position is measured, the nut 20 is loosened, the meter frame can move at any angle position within a range of 360 degrees, the rocking wheel 15 is used for driving the speed reducer to stop at another any test position, and then the nut of the meter frame is screwed to measure.
Claims (3)
1. The utility model provides a RV speed reducer idle running backlash and torsional rigidity testing arrangement which characterized in that:
comprises a frame (1), a fixed seat (3), a supporting sleeve (4), a dial (6), a dial indicator (7), a testing arm (8), a flange shaft (9) and a force arm (10) with a ratchet wheel;
the speed reducer (11) to be tested is fixed on the fixed seat and is arranged on the rack, the supporting sleeve is fixed on the rack, an input shaft (13) of the speed reducer is sleeved in the supporting sleeve and is connected with a central transmission shaft (14), the central transmission shaft is sleeved in a shaft sleeve (5) fixed on the rack and is driven by a rocking wheel (15), and the rocking wheel is rotated to form a structure which enables the speed reducer to be stopped at a testing position; a fastening screw rod (16) capable of fastening the input shaft of the speed reducer is transversely arranged in the supporting sleeve in a penetrating way to form a structure for fastening the input shaft of the speed reducer at a test position;
the dial plate is fixed on the outer ring of the fixing seat, an annular groove (17) is formed in the dial plate, the annular groove and an output shaft (12) of the speed reducer are coaxial, a dial indicator capable of moving along the annular groove through the dial frame is installed in the annular groove, and the dial indicator is fixed in position through a dial frame fastener at a testing position; the flange shaft is connected with an output shaft of the speed reducer, one end of the testing arm is fixed on the flange shaft, the other end of the testing arm is connected with the dial indicator, and the fixed-length distance (b) of the testing arm is formed from the center of the dial indicator to the shaft center of the output shaft of the speed reducer; the force arm with the ratchet wheel is sleeved on the flange shaft, positive and negative forces are applied to the flange shaft through the ratchet wheel device of the force arm with the ratchet wheel device to enable the output shaft of the speed reducer to correspondingly rotate, and the positive and negative swing values of the testing arm and the fixed length distance of the testing arm are read through the dial indicator to calculate, so that a structure for detecting idle stroke return difference and torsional rigidity of the speed reducer is formed.
2. The RV reducer backlash and torsional rigidity testing device of claim 1, characterized in that: the annular groove (17) that the dial plate set up adopts annular T type groove, and the table frame adopts screw (18), and the table frame fastener adopts nut (20), and the amesdial accessible screw is 360 removal and accessible nut fixes in the test position along annular T type groove.
3. The RV reducer backlash and torsional rigidity testing device according to claim 1 or 2, characterized in that: the shaft sleeve of the sleeved central transmission shaft is provided with a bearing (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010105811.3A CN111174673A (en) | 2020-02-20 | 2020-02-20 | RV speed reducer idle running backlash and torsional rigidity testing arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010105811.3A CN111174673A (en) | 2020-02-20 | 2020-02-20 | RV speed reducer idle running backlash and torsional rigidity testing arrangement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111174673A true CN111174673A (en) | 2020-05-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010105811.3A Pending CN111174673A (en) | 2020-02-20 | 2020-02-20 | RV speed reducer idle running backlash and torsional rigidity testing arrangement |
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| Country | Link |
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| CN (1) | CN111174673A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113532239A (en) * | 2021-06-29 | 2021-10-22 | 方盛车桥(合肥)有限公司 | Tooth side clearance measuring equipment |
-
2020
- 2020-02-20 CN CN202010105811.3A patent/CN111174673A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113532239A (en) * | 2021-06-29 | 2021-10-22 | 方盛车桥(合肥)有限公司 | Tooth side clearance measuring equipment |
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