CN113310449B - Gear box meshing clearance detection device and detection method - Google Patents
Gear box meshing clearance detection device and detection method Download PDFInfo
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- CN113310449B CN113310449B CN202110734191.4A CN202110734191A CN113310449B CN 113310449 B CN113310449 B CN 113310449B CN 202110734191 A CN202110734191 A CN 202110734191A CN 113310449 B CN113310449 B CN 113310449B
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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
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/16—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring distance of clearance between spaced objects
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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
- G01M13/00—Testing of machine parts
- G01M13/02—Gearings; Transmission mechanisms
- G01M13/021—Gearings
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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
- G01M13/00—Testing of machine parts
- G01M13/02—Gearings; Transmission mechanisms
- G01M13/025—Test-benches with rotational drive means and loading means; Load or drive simulation
Abstract
The invention relates to a gear box meshing clearance detection device and a detection method. A gearbox backlash detection device comprising: the system comprises a torque sensor and a standard data storage module, wherein the standard data storage module is used for storing rotation angle setting data alpha of a servo motor serving as an input end during gear engagement detection and standard torque T0 detected by the rotation angle alpha of the servo motor, and the T0 is a torque range; the control module is used for stopping rotation of the output end of the gear box by the rotation stopping mechanism after the tested gear box is clamped on the detection device, and the input end of the gear box is connected with the servo motor through the torque sensor; the data comparison module is used for comparing the torque data T1 acquired by the torque sensor with the standard torque T0 stored in the standard data storage module; and the detection result output module outputs different results according to the comparison result of the data comparison module. The invention has the advantages of simple structure and capability of detecting the gap between the output end gear of the gear box and the input end gear of the gear box.
Description
Technical Field
The invention relates to a gear box meshing clearance detection device and a detection method.
Background
For the gear box, the size of the meshing clearance between the input shaft gear and the output shaft gear directly influences the quality of products. Too large a meshing clearance between the input shaft gear and the output shaft gear causes the following drawbacks: impact is generated when the device is used; the tooth surface is easy to be damaged, and the service life is shortened; the gear ratio is inaccurate. Too small a meshing clearance of the input shaft gear and the output shaft gear causes the following drawbacks: the resistance is increased and the gear is abnormally worn. Therefore, gearbox backlash detection is typically required for gearboxes.
The intellectual property office of china discloses a utility model file with a notice number of CN210773986U in 2020 on 6/16/month, which discloses a differential upper and lower gear meshing clearance detection device, including frame, servo motor, first shaft coupling, torque sensor, second shaft coupling, bearing frame, pneumatic sliding ring, anchor clamps cylinder and tight anchor clamps that rise, servo motor's base is fixed in the top of frame, servo motor's output passes through the coupling joint torque sensor's one end, torque sensor's the other end passes through the coupling joint the bearing frame, the bearing frame is connected pneumatic sliding ring, pneumatic sliding ring connects the stiff end of anchor clamps cylinder, the output shaft of anchor clamps cylinder connects tight anchor clamps that rise.
The above scheme has the following problems: the structure is complex; the backlash between the output gears of the gearbox and the input gears of the gearbox cannot be detected.
Disclosure of Invention
The invention provides a gear box meshing clearance detection device which is simple in structure and can detect the clearance between an output end gear of a gear box and an input end gear of the gear box.
Aiming at the purposes, the invention adopts the following scheme: a gearbox backlash detection apparatus comprising:
the rotation stopping mechanism is used for preventing the output end of the gear box to be detected from rotating;
the servo motor is used for driving the input end of the gear box to be detected to rotate;
the torque sensor is connected between the output end of the servo motor and the input end of the gear box to be detected and is used for detecting the torque T1 between the output end of the servo motor and the input end of the gear box to be detected;
the standard data storage module is used for storing rotation angle setting data alpha of the output end of the servo motor as an input end during gear engagement detection and standard torque T0 detected by the rotation angle alpha of the output end of the servo motor, wherein the T0 is a torque range value;
the control module is used for controlling the rotation angle alpha of the output end of the servo motor, and the input end of the gear box to be detected is connected with the output end of the servo motor through a torque sensor;
the data comparison module is used for comparing the torque data T1 acquired by the torque sensor with the standard torque T0 stored in the standard data storage module;
the detection result output module outputs different results according to the comparison result of the data comparison module, and if T1 is in the numerical range of T0, a result that the gear meshing clearance is qualified is given; otherwise, the result that the gear meshing clearance is unqualified is given.
When the device is used, the control module controls the rotation stopping mechanism to stop the rotation of the output end of the gear box to be detected; then, the control module controls the servo motor to drive the input end of the gear box to be detected to rotate by an angle alpha; then, the torque sensor measures the torque T1 between the output end of the servo motor and the input end of the gear box; then, the data comparison module obtains a result of whether the meshing clearance of the gearbox is qualified; and finally, replacing the gear box which is detected completely with the gear box to be detected next, and repeating the steps. When the output end of the gear box to be detected is stopped by the rotation stopping mechanism, and the output end of the servo motor is matched with the input end of the gear box to be detected, the rotation of the output end of the servo motor drives the gear in the gear box to be detected to rotate by a certain angle step by step, and the torque sensor connected between the output end of the servo motor and the input end of the gear box to be detected is subjected to smaller torque; after the meshing gap between the input end and the output end of the gear box to be detected is eliminated, the gear in the gear box to be detected cannot continuously rotate, the output end of the servo motor cannot continuously rotate the gear in the gear box to be detected, and the torque applied to the torque sensor connected between the output end of the servo motor and the input end of the gear box to be detected is rapidly increased. Measuring an angle alpha required by the output end of the servo motor when the standard meshing clearance of the gear box to be detected is eliminated, measuring a torque value range T0 of the torque sensor when the output end of the servo motor rotates by the angle alpha, detecting the gear box by taking the value as a reference to rotate the output end of the servo motor by the angle alpha, comparing a measured value T1 of the torque sensor with the value T0, and if the value T1 is in the value range of T0, giving a qualified result of the gear meshing clearance; otherwise, the result that the gear meshing clearance is unqualified is given. If the rotation angle of the output end of the servo motor is smaller than alpha and is prevented from rotating by the gear box to be detected and the value of the torque sensor exceeds the upper limit value of T0, the result that the meshing clearance of the gear box to be detected is unqualified is directly given, and the actual result is that the meshing clearance of the gear box to be detected is too small. Compared with the traditional gear meshing clearance measurement, the gear meshing clearance measurement can be carried out on the gear box to be detected as a whole, the measurement steps are reduced, and the working efficiency is improved. Control module control servo motor output turned angle for this device can test different gear boxes that wait to detect, improves the commonality of this device.
Preferably, the output end of the servo motor is connected with the input end of the gear box to be detected through a first coupler, a support used for placing the gear box to be detected is arranged between the rotation stopping mechanism and the first coupler, and the torque sensor is located between the first coupler and the output end of the servo motor.
Preferably, the fixing device further comprises a first fixing plate and a second fixing plate, the first fixing plate and the second fixing plate are respectively fixed at two ends of the guide rod, a movable plate is slidably arranged on the guide rod, a rotation stopping mechanism is fixed on one side, close to the first fixing plate, of the movable plate, the support is fixed to the first fixing plate, the support is located between the movable plate and the first fixing plate, and a servo motor is fixed on one side, far away from the support, of the first fixing plate. The movable plate is in sliding fit with the guide rod, so that the movable plate can move between the first fixing plate and the second fixing plate, and the rotation stopping mechanism can adapt to different workpieces.
Preferably, the rotation stopping mechanism comprises a second coupling connected with the output end of the gear box to be detected, and a rotation stopping motor connected with the second coupling. The rotation of the output end gear of the gear is limited through the self-locking function of the rotation stopping motor, the rotation stopping effect is better, and therefore the accuracy of the gear box meshing clearance detection result is improved.
Preferably, the support is provided with a yielding groove penetrating through the support. The groove of stepping down steps down the input of work piece, and the work piece can be easily placed on the support.
Preferably, the second fixing plate is fixed with a lifting mechanism, and an output end of the lifting mechanism is fixed with the movable plate. The lifting mechanism is a screw rod lifter, and the screw rod lifter is a commercially available screw rod lifter.
Preferably, the support is detachably fixed with a support plate matched with the gear box to be detected, and the support plate is provided with a through hole. The backup pad passes through the bolt and can dismantle fixedly with the work piece, and the backup pad is placed back on the support, and the backup pad passes through the bolt and can dismantle fixedly with the support, makes things convenient for support and work piece fixed, avoids in the testing process, and the work piece takes place to vibrate.
The gear box meshing clearance detection method of the detection device comprises the following steps:
s1: clamping a gear box to be detected to a detection device, stopping the rotation of the output end of the gear box to be detected by a rotation stopping mechanism, and controlling a servo motor to rotate the output end of the servo motor by a certain angle alpha by a control module;
s2: the torque sensor detects torque data T1 between the output end of the servo motor and the input end of the gearbox, and transmits the torque data T1 to the data comparison module;
s3: the data comparison module compares torque data T1 acquired by the torque sensor with standard torque data T0 stored by the standard data storage module;
s4: the detection result output module outputs different results according to the comparison result of the data comparison module: if T1 is in the torque range of T0, a qualified result of the gear meshing clearance is given; otherwise, the result that the gear meshing clearance is unqualified is given.
When the output end of the gear box to be detected is stopped by the rotation stopping mechanism, after the output end of the servo motor is matched with the input end of the gear box to be detected, the rotation of the output end of the servo motor drives an inner gear of the gear box to be detected to rotate by a certain angle step by step, and the torque received by a torque sensor connected between the servo motor and the input end of the gear box to be detected is smaller; after the meshing gap between the input end and the output end of the gear box to be detected is eliminated, the gear in the gear box to be detected cannot continuously rotate, the servo motor cannot continuously rotate the gear in the gear box to be detected, and the torque applied to the torque sensor connected between the output end of the servo motor and the input end of the gear box to be detected is rapidly increased. Measuring an angle alpha required to rotate by the output end of the servo motor when the standard meshing clearance of the gear box is eliminated, simultaneously measuring a torque value range T0 of a torque sensor when the output end of the servo motor rotates by the angle alpha, using the value as a reference to enable the output end of the servo motor to rotate by the angle alpha to detect the gear box to be detected, comparing a measured value T1 of the torque sensor with the value T0, and if the value T1 is within the value range of the T0, giving a qualified result of the gear meshing clearance; otherwise, the result that the gear meshing clearance is unqualified is given. If the rotation angle of the output end of the servo motor is smaller than alpha and is prevented from rotating by the gear box to be detected and the value of the torque sensor exceeds the upper limit value of T0, the result that the meshing clearance of the gear box to be detected is unqualified is directly given, and the actual result is that the meshing clearance of the gear box to be detected is too small. Compared with the traditional gear meshing clearance measurement, the gear meshing clearance measurement can be carried out on the gear box to be detected as a whole, the measurement steps are reduced, and the working efficiency is improved.
The invention has the following advantages: the structure is simple; the rotating angle of the output end of the servo motor can be adjusted, so that the gear meshing gaps of different gear boxes to be detected can be detected, and the universality is better; the gap between the output shaft gear of the gear box to be detected and the input shaft gear of the gear box to be detected can be detected; the output shaft of the gear box to be detected is stopped by the rotation stopping motor, so that the rotation stopping effect is better, and the detection result is high in accuracy; the yielding groove yields the input shaft of the workpiece, and the workpiece can be easily placed on the support.
Drawings
FIG. 1 is a state diagram of the present invention in use;
FIG. 2 is a schematic structural view of the present invention;
FIG. 3 is a schematic structural view of a support plate;
fig. 4 is a schematic diagram of the present invention.
Detailed Description
To further illustrate the technical solutions adopted by the present invention to achieve the predetermined objects, the following detailed descriptions will be made with reference to the accompanying drawings, and the following descriptions will be made:
as shown in fig. 1 to 2, a gear box meshing gap detecting device includes a first fixing plate 6 horizontally disposed and a second fixing plate 7 located above the first fixing plate 6. The first fixing plate 6 and the second fixing plate 7 are fixed at two ends of a guide rod 8 which is vertically arranged, the four guide rods 8 which are vertically arranged are slidably provided with a movable plate 9 which is horizontally arranged, the movable plate 9 is provided with a yielding hole which runs through the movable plate 9, and the four guide rods 8 are respectively positioned in the yielding holes.
The first fixing plate 6 is fixed with the support 3, the support 3 is located between the movable plate 9 and the first fixing plate 6, one side of the first fixing plate 6, which is far away from the support 3, is fixed with the servo motor 4, and the output end of the servo motor 4 is connected with the first coupler 1. A torque sensor 5 for measuring torque is connected between the first coupler 1 and the output end of the servo motor 4. As shown in fig. 1 and 3, a support plate 32 is fixed above the support 3 having the relief groove 31, the support plate 32 has a through hole 33, and the through hole 33 corresponds to the relief groove 31. Due to the existence of the abdicating groove, as long as the lower end surface of the workpiece is higher than the upper end surface of the first coupler, the input end of the workpiece can be connected with the first coupler, and the workpiece can be conveniently placed.
An elevating mechanism 71 is fixed on the upper side of the second fixed plate 7, and an output end of the elevating mechanism 71 passes through the second fixed plate 7 and then is fixed on the upper side of the movable plate 9. The lifting mechanism is a screw rod lifter.
A rotation stopping mechanism 2 for connecting the output end of the workpiece is fixed on one side of the movable plate 9 close to the first fixed plate 6, and the rotation stopping mechanism 2 comprises a second coupler 21 for connecting with the output end of the workpiece 10 and a rotation stopping motor 22 connected with the second coupler 21. The rotation stopping motor 22 is fixed on the upper side of the movable plate 9, the output end of the rotation stopping motor 22 is connected with the second coupler 21, and the movable plate 9 is located at two ends of the rotation stopping motor 22 and the second coupler 21.
As shown in fig. 4, the device further comprises a control module, and the control module is connected with a torque sensor 4, a servo motor 5, a data comparison module, a standard data storage module, and a detection result output module. The standard data storage module is used for storing rotation angle setting data alpha of the output end of the servo motor 4 serving as an input end during gear engagement detection and standard torque T0 detected by the rotation angle alpha of the output end of the servo motor 4, wherein the T0 is a torque range value; the control module is used for controlling the output end rotation angle alpha of the servo motor 4, and the output end rotation angle alpha of the servo motor 4 is controlled by the control module, when the gearbox 10 is clamped on the detection device, the output end of the gearbox 10 is stopped by the rotation stopping mechanism 2, the input end of the gearbox 10 is connected with the output end of the servo motor 4 through the torque sensor 5; the data comparison module is used for comparing the torque data T1 acquired by the torque sensor 5 with the standard torque T0 stored in the standard data storage module; the detection result output module outputs different results according to the comparison result of the data comparison module, and if T1 is in the numerical range of T0, a result that the gear meshing clearance is qualified is given; otherwise, the result that the gear meshing clearance is unqualified is given.
As shown in fig. 4, the method of use of the present invention is as follows: before use, the first step: fixing a gear box to be detected with the support plate, wherein the output end of the gear box to be detected is positioned in the through hole; step two: the support plate is placed on the support, then the input end of the gear box to be detected is connected with the rotation stopping mechanism, and the output end of the gear box to be detected is connected with the first coupler. When in use, the first step: the rotation stopping mechanism 2 stops the rotation of the output end of the gear box 10 to be detected, and the control module controls the servo motor 4 to rotate the output end of the servo motor 4 by a certain angle alpha; step two: the torque sensor 5 detects torque data T1 between the output end of the servo motor 4 and the input end of the gear box to be detected, and transmits the torque data T1 to the data comparison module; step three: the data comparison module compares torque data T1 acquired by the torque sensor 5 with standard torque data T0 stored by the standard data storage module; step four: the detection result output module outputs different results according to the comparison result of the data comparison module: if T1 is in the value range of T0, the result that the gear meshing clearance is qualified is given; otherwise, the result that the gear meshing clearance is unqualified is given. And after detection, replacing the gear box to be detected after gear clearance detection is finished with the gear box to be detected.
Although the present invention has been described with reference to specific embodiments, it will be understood by those skilled in the art that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. A gearbox backlash detection device comprising:
the rotation stopping mechanism (2) is used for preventing the output end of the gear box (10) to be detected from rotating;
the servo motor (4) is used for driving the input end of the gear box (10) to be detected to rotate;
the torque sensor (5) is connected between the output end of the servo motor (4) and the input end of the gear box (10) to be detected and is used for detecting the torque T1 between the output end of the servo motor (4) and the input end of the gear box;
the standard data storage module is used for storing rotation angle setting data alpha of the output end of the servo motor (4) serving as an input end during gear engagement detection and standard torque T0 detected by the rotation angle alpha of the output end of the servo motor (4), and the T0 is a torque range value;
the control module is used for controlling the output end rotation angle alpha of the servo motor (4), when the gear box (10) is clamped on the detection device, the output end of the gear box (10) is stopped by the rotation stopping mechanism (2), the input end of the gear box (10) is connected with the output end of the servo motor (4) through the torque sensor (5);
the data comparison module is used for comparing the torque data T1 acquired by the torque sensor (5) with the standard torque T0 stored in the standard data storage module;
the detection result output module outputs different results according to the comparison result of the data comparison module, and if T1 is in the numerical range of T0, a result that the gear meshing clearance is qualified is given; otherwise, the result that the gear meshing clearance is unqualified is given.
2. The gearbox backlash detection device according to claim 1, wherein an output end of the servo motor (4) is connected with an input end of a gearbox (10) to be detected through a first coupling (1), a bracket (3) for placing the gearbox (10) is arranged between the rotation stopping mechanism (2) and the first coupling (1), and the torque sensor (5) is positioned between the first coupling (1) and the output end of the servo motor (4).
3. The gear box meshing clearance detecting device according to claim 2, characterized by further comprising a first fixing plate (6) and a second fixing plate (7), wherein the first fixing plate (6) and the second fixing plate (7) are respectively fixed at two ends of a guide rod (8), a movable plate (9) is slidably matched on the guide rod (8), the rotation stopping mechanism (2) is fixed on one side of the movable plate (9) close to the first fixing plate (6), the bracket (3) is fixed with the first fixing plate (6), the bracket (3) is located between the movable plate (9) and the first fixing plate (6), and the servo motor (4) is fixed on one side of the first fixing plate (6) far away from the bracket (3).
4. The gearbox backlash detection device according to claim 3, wherein the rotation stop mechanism (2) comprises a second coupling (21) for connecting with an output end of the gearbox (10) to be detected, and a rotation stop motor (22) connected with the second coupling (21).
5. Gearbox backlash detection device according to claim 2, characterized in that said bracket (3) is provided with a relief groove (31) passing through said bracket (3).
6. The gear box meshing clearance detecting device according to claim 3, wherein a lifting mechanism (71) is fixed on the second fixing plate (7), and an output end of the lifting mechanism (71) is fixed with the movable plate (9).
7. The gear box meshing gap detection device according to claim 2, wherein a support plate (32) used for matching with the gear box (10) to be detected is detachably fixed on the support (3), and the support plate (32) is provided with a through hole (33).
8. A method for detecting the meshing clearance of a gearbox, which is used for the detection device according to any one of claims 1 to 7, is characterized by comprising the following steps:
s1: clamping a gear box (10) to be detected on a detection device, stopping the rotation of the output end of the gear box (10) to be detected by a rotation stopping mechanism (2), and controlling a servo motor (4) by a control module to enable the output end of the servo motor (4) to rotate by a certain angle alpha;
s2: the torque sensor (5) detects torque data T1 between the output end of the servo motor (4) and the input end of the gearbox, and transmits the torque data T1 to the data comparison module;
s3: the data comparison module compares torque data T1 acquired by the torque sensor (5) with standard torque data T0 stored by the standard data storage module;
s4: the detection result output module outputs different results according to the comparison result of the data comparison module: if T1 is in the value range of T0, a result that the gear meshing clearance is qualified is given; otherwise, the result that the gear meshing clearance is unqualified is given.
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| CN113701694A (en) * | 2021-09-26 | 2021-11-26 | 北京科荣达航空科技股份有限公司 | Tooth side clearance measuring system and measuring method |
| WO2023173420A1 (en) * | 2022-03-18 | 2023-09-21 | Abb Schweiz Ag | Fixing platform for use with industrial robot and method of automatically measuring backlash of gear |
| WO2023173422A1 (en) * | 2022-03-18 | 2023-09-21 | Abb Schweiz Ag | Fixing apparatus for use with industrial robot and method of measuring backlash of gear |
| CN115218851B (en) * | 2022-07-22 | 2024-04-12 | 广东椿岛电控科技有限公司 | Locking clearance detection device and method for cam shaft phase actuator |
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