System and method for detecting assembly precision and transmission performance of worm and gear transmission device

Abstract

The invention relates to a worm and gear transmission device assembly precision and transmission performance detection system and method. The system comprises a hard assembly, a soft assembly and a connection auxiliary assembly. The system supplies power and provides protection for the system through a specific electrical circuit, provides power for a running-in test and controls a mechanism to act through a specific execution motor and a control circuit of a PLC (Programmable Logic Controller), and integrates a high-precision laser displacement sensor, a computer system and a data acquisition module. Accurate measurement of the assembly clearance of the worm and gear transmission component and accurate evaluation of the slip performance of the friction plate are realized. The system adopts a rotating motor driving unit and a magnetic powder clutch control unit, can automatically execute no-load and load running-in tests, and produces a detailed detection report through real-time data display and analysis. And the detection efficiency and precision of the mechanical transmission device are greatly improved. The method is suitable for mechanical transmission system detection in various industrial fields, and has a wide application prospect.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of worm gear performance detection, and particularly relates to a worm gear transmission device assembly precision and transmission performance detection system and method. BACKGROUND

[0002] In the existing worm gear machining technology, the problems of machine tool and tool precision limitation and cumulative error in the machining process are common, which leads to the situation that the product finished product precision grade is difficult to fully meet the standards, which not only affects the assembly transmission stability of the new product, but also brings the running stagnation problem in actual use. If the new product is ground after machining and assembly, it can pass the running-in period in advance, so that the product has good stability when used. After the worm gear transmission device is assembled, the special equipment is used for the running-in test of the grinding.

[0003] For the detection of the matching gap of the worm gear and the worm gear during assembly transmission, the existing equipment and technology cannot effectively detect the accurate matching gap, which is particularly crucial for ensuring the transmission stability.

[0004] The friction clutch is the most effective and practical transmission mechanism protection device in the worm gear transmission, and the detection of the slip data of the friction clutch is one of the current technical problems. SUMMARY

[0005] The present application provides a worm gear transmission device assembly precision and transmission performance detection system and method, which solves the process problem that the worm gear transmission device has poor stability at the initial stage of assembly transmission, and needs to be ground to pass the running-in period in advance, so that the product has good stability when used.

[0006] In order to solve the above technical problems, the present application provides a worm gear transmission device assembly precision and transmission performance detection system, characterized in that it comprises:

[0007] The hard component comprises a transmission performance detection platform (1) and a slip torque detection platform (2) which are distributed perpendicular to each other, and a transmission device special fixing seat (3) arranged between the two; the transmission performance detection platform (1) is provided with a rotating motor (5), an input connection auxiliary component (7) and a laser displacement sensor (9); the slip torque detection platform (2) is provided with a magnetic powder clutch servo motor (4), a magnetic powder clutch (8) and an output connection auxiliary component (10);

[0008] Soft components: including console (20), PLC programmable controller (27), dynamic torque sensor; the PLC programmable controller (27) is connected rotating motor (5), magnetic powder clutch servo motor (4), laser displacement sensor (9) and dynamic torque sensor, for executing no-load / load running-in test, clearance detection and slip test;

[0009] Connection auxiliary components: input connection auxiliary components (7) are connected with worm (11) and rotating motor (5), and output connection auxiliary components (10) are connected with worm gear and magnetic powder clutch (8).

[0010] A worm gear transmission device assembly precision and transmission performance detection method, characterized by comprising the steps of:

[0011] Running-in test: set the rotating speed, load and time by the console (20), drive the worm by the rotating motor (5), and complete the no-load and load running-in by the magnetic powder clutch (8) to apply load;

[0012] Clearance detection: keep the meshing state of the worm gear after running-in, and the laser displacement sensor (9) irradiates a single position of the worm gear tooth surface;Control the magnetic powder clutch (8) to apply the left-handed / right-handed equivalent reverse torque, and record the displacement difference of the tooth surface to calculate the assembly clearance;

[0013] Slip test: disconnect the rotating motor (5), input incremental torque to the magnetic powder clutch (8) until the friction plate slips, and record the slip critical torque value.

[0014] A worm gear transmission device friction clutch slip critical value detection method, characterized by:

[0015] Apply incremental torque to the worm shaft by the magnetic powder clutch (8);

[0016] Collect the output torque and rotating speed mutation point in real time by the dynamic torque sensor (22);

[0017] When the torque fluctuation exceeds the threshold value, determine the slip, and record the torque value at this time as the critical value.

[0018] A worm gear transmission device assembly clearance detection method, characterized by comprising:

[0019] Fix the worm after grinding, and position the worm gear tooth surface by the laser displacement sensor (9);

[0020] Apply bidirectional equivalent torque to induce relative displacement;

[0021] Generate an assembly clearance report based on the displacement difference ΔL, and ΔL satisfies: ΔL≤0.05mm.

[0022] Beneficial effects: the worm gear transmission device assembly precision and transmission performance detection system can simulate the normal operation state of the worm gear transmission device to be detected, carries out the transmission device idle and load running, friction clutch slip test, and detects through the laser displacement sensor, realizes the accurate measurement of the worm gear transmission gap, transmits the detection value to the computer system, forms the offset data fluctuation chart, and provides support for product quality inspection.

[0023] Meanwhile, the application also relates to a friction clutch torque critical value detection method, which can accurately detect the friction torque of the friction plate through dynamic torque sensor detection technology, and accurately determine the friction plate pre-tightening force. The application solves the process problem that the worm gear transmission device has poor stability at the initial transmission assembly stage and needs to be ground to pass the running-in period in advance, and has good stability during use, provides an overload protection preset value measurement and correction and transmission device assembly gap measurement method and means, and is a detection system and method which is simple and efficient, has high automation degree, has the functions of data collection, storage, real-time display (digital display and graphic display), judgment and processing, and has high safety and reliability. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 For the application: worm gear transmission device assembly precision and transmission performance detection system structure schematic view (front view).

[0025] Figure 2 For the application: worm gear transmission device assembly precision and transmission performance detection system structure schematic view (left view).

[0026] Figure 3 For the application: worm gear transmission device assembly precision and transmission performance detection system structure schematic view (top view).

[0027] Figure 4 For the application: worm gear transmission device assembly precision and transmission performance detection system circuit principle diagram.

[0028] Figure 5 For the application: slip and load detection flow chart.

[0029] Figure 6 For the application: gap detection flow chart. DETAILED DESCRIPTION

[0030] In order to make the purpose, content and advantages of the application more clear, the specific embodiments of the application are described in further detail below.

[0031] The worm gear transmission device assembly precision and transmission performance detection system is characterized in that: the worm gear transmission device is connected with the magnetic powder clutch servo motor (4) through the output connection auxiliary assembly (10), and the worm is connected with the rotary motor (5) through the input connection auxiliary assembly (7), the worm gear transmission device is subjected to the idle and load running-in test for a certain time, the worm gear is ground, the meshing clearance after the worm gear is ground is detected, and the friction plate slip is detected, the laser displacement sensor is used to record the worm gear tooth surface distance, the friction plate slip is detected through the magnetic powder clutch input predetermined torque, and finally the slip torque detection is adjusted to the required preset value range.

[0032] The system comprises a hard component, a soft component and a connection auxiliary assembly.

[0033] The hard component comprises a transmission performance detection platform (1), a slip torque detection platform (2), a transmission device special fixing seat (3), a magnetic powder clutch servo motor (4), a rotary motor (5), a magnetic powder clutch (8) and a laser displacement sensor (9), the platform is provided with a guide positioning groove, the transmission device special fixing seat is distributed on the platform, the magnetic powder clutch servo motor (4) is connected with the magnetic powder clutch (8) and the worm gear transmission device output shaft through the output connection auxiliary assembly (10), and the worm (11) is connected with the rotary motor (5) through the input connection auxiliary assembly (7).

[0034] As Figure 1 , Figure 2 , Figure 3The transmission performance detection platform (1) and the slipping torque detection platform (2) are perpendicular to each other, and the transmission device special fixing seat (3) is arranged between the two, and the three are tightly connected with the installation ground, and the operation surface is guaranteed to be horizontal. The rotary motor (5) is installed on the transmission performance detection platform (1), the input connection auxiliary assembly (7) and the dynamic torque sensor (21) are installed on the output shaft of the rotary motor (5), a platform feeding mechanism and a propulsion motor are arranged on one side of the platform, guide positioning grooves are arranged on the platform, the rotary motor (5), the output connection auxiliary assembly (10) and the dynamic torque sensor (21) can generate axial feeding motion along the transmission output shaft, and limiting is performed through limit limit proximity switches. The laser displacement sensor (9) is arranged at a fixed position of the platform. The output connection auxiliary assembly (10) and the dynamic torque sensor (22) are installed on the output shaft of the rotary motor (5), the platform base has a vertical lifting adjusting function, a platform feeding mechanism and a propulsion motor are arranged on one side of the platform, guide positioning grooves are arranged on the platform, and axial feeding motion can also be generated. The magnetic powder clutch servo motor (4) is installed on the slipping torque detection platform (2), and the output shaft of the magnetic powder clutch servo motor (4) is connected with the magnetic powder clutch (8) through a shaft coupling. The output connection auxiliary assembly (10) and the dynamic torque sensor (21) are installed on the output shaft of the magnetic powder clutch (8), a platform feeding mechanism and a propulsion motor are arranged on one side of the platform, guide positioning grooves are arranged on the platform, the rotary motor (5), the output connection auxiliary assembly (10) and the dynamic torque sensor (21) can generate axial feeding motion along the transmission output shaft, and limiting is performed through limit limit proximity switches. The laser displacement sensor (9) is arranged at a fixed position of the platform.

[0035] The magnetic powder clutch is selected according to the maximum torsion of the product, the torsion of the input motor 1 is greater than the maximum torsion of the magnetic powder clutch, and the power of the input motor 2 is greater than the running-in power.

[0036] When the worm gear transmission device assembly precision and transmission performance detection system detects the worm gear transmission device, the worm gear transmission device is fixed on the transmission device special fixing seat (3), the input shaft of the worm gear transmission device is connected with the transmission shaft of the transmission performance detection platform (1) through the input connection auxiliary assembly (7). The relative position of the input shaft of the detected worm gear transmission device is adjusted and connected by the propulsion motor; the output shaft of the worm gear transmission device, i.e. the worm shaft, is connected with the output shaft of the magnetic powder clutch of the slipping torque detection platform (2) through the output connection auxiliary assembly (10), which conforms to the principle of human engineering. The coaxialities of the above axial connections are adjusted by adjusting the base of the transmission device special fixing seat (3) and the base of the slipping torque detection platform (2), the meshing state of the worm and the worm is ensured by debugging, and the rotary motor (5) is selected to be consistent with the working motor of the worm gear transmission device.

[0037] The soft component includes: control system, data acquisition system, coupling device; wherein the control system includes phase sequence protector (24), power converter (26), electronic transformer (25), PLC programmable controller (27), transmission performance detection platform propulsion servo motor (28), slip torque detection platform propulsion servo motor (29), limit proximity switch (4), dynamic torque sensor (21, 22), magnetic powder clutch brake brake controller (23), console (20).

[0038] The three-phase five-limit power supply on site supplies power for the detection device of the present application, and the phase sequence protector (24) automatically identifies the phase sequence. When the phase sequence is not consistent, the output relay cannot be turned on, which avoids the reverse connection of the power supply phase sequence and the resulting motor failure, thereby protecting the line and equipment. Three-phase 380V alternating current supplies power for the 7.5KW servo motor of the magnetic powder clutch. At the same time, the electronic transformer (25) is connected, and the voltage is reduced through the electronic transformer, and then the transmission performance detection platform rotation servo motor (5) and two platform propulsion servo motors are supplied with power. Single 220V alternating current supplies power for the PLC programmable controller (27), which is converted into direct current 24V / A through the power converter (26) to supply power for the controllers of the four servo motors. The PLC programmable controller (27) controls the movement of the motor through the program control signal output to meet the working requirements of the detection device. The PLC programmable controller (27), four limit proximity switches, laser displacement sensor (9), dynamic torque sensor (21, 22), brake controller (23) respectively transmit signals and data with the console to realize the no-load and load running-in test, automatic loading of the load, stepless adjustment of the drive shaft speed; has the functions of collecting, saving, real-time displaying (digital display, graphic display), judging and processing the detection data, and meets the safety and reliability requirements.

[0039] The detected worm gear transmission parameter is set on the console (20) as required: set the rotating speed, transmission direction (forward rotation, reverse rotation), transmission time length, load amount and other parameters; the transmission control circuit of the control system controls the rotating motor (5) to output torque as required, the magnetic powder clutch servo motor (4) applies load through the magnetic powder clutch (8), the load torque is set to 0 to complete the no-load test, the load torque is set to the required value to complete the load test, and the running-in test is completed for the set time length. The running state of the worm gear transmission device at the highest and lowest rotating speeds of the worm gear transmission device is tested (smooth running, no jamming). The dynamic torque sensor transmits the torque value applied by the magnetic powder clutch on the output shaft of the detected worm gear transmission device to the console for display at any time. The no-load and load running-in test makes the worm and the worm gear meshing movement to reach the running-in state and maintain the predetermined time. The approach limit proximity switch and the retreat limit proximity switch on the detection platform limit the limit positions of the platform and the transmission shaft feeding and retreating. The laser displacement sensor (9) emits a laser beam to irradiate a single position of the worm gear tooth surface of the detected worm gear transmission device, the console (20) inputs the positive and negative torque values, the magnetic powder clutch (8) is controlled to give the same fixed torque to the right rotation and the left rotation, the laser displacement sensor is kept stationary, the distance of the worm gear tooth surface at this time is recorded, and the worm and worm gear fitting clearance is determined to meet the detection requirements. The worm (11) is disconnected from the rotating motor (5), and the detected worm gear transmission device is connected to the friction clutch. The friction clutch slip test is performed by applying a predetermined torque load torque value on the console (20). The detection process is as follows Figure 5 .

[0040] In the preferred embodiment, the meshing clearance of the detected worm and worm gear after running-in is detected, the laser displacement sensor (9) emits a laser beam to irradiate a single position of the worm gear tooth surface of the detected worm gear transmission device, the magnetic powder clutch (8) is controlled to give a left rotation fixed torque, the worm gear generates a relative displacement amount with the worm under the force, the laser beam return phase difference is measured, the principle of measuring the displacement amount of a single position of the tooth surface is calculated, the distance of a single position of the worm gear tooth surface is recorded, then the magnetic powder clutch is controlled to give the same fixed torque to the right rotation and the left rotation, during which the laser displacement sensor is kept stationary, the distance of the worm gear tooth surface at this time is recorded, the position difference of the two times is recorded, the worm and worm gear fitting clearance is determined, and the detection requirements are met.

[0041] The application relates to a worm gear transmission assembly precision and transmission performance detection method, characterized by a method for performing worm gear pair grinding and completing no-load and load running-in tests and friction clutch slip tests on a worm gear transmission device under normal operation state, detecting the worm gear assembly gap of the worm gear transmission device after worm gear pair grinding, and adjusting the slip torque of the friction clutch.

[0042] The application relates to a worm gear transmission running-in test method, characterized by utilizing the worm gear transmission assembly precision and transmission performance detection system to perform worm gear pair grinding, setting worm gear transmission running-in parameters according to requirements, and completing the running-in test; the method comprises the following steps: a. the worm gear transmission device is fixed on a transmission device special fixing seat, the input end is connected with a transmission performance detection platform transmission mechanism, and the output end is connected with a slip torque detection platform transmission mechanism; the transmission performance detection platform provides input power of the worm gear transmission device, a magnetic powder clutch of the slip torque detection platform provides output end load of the worm gear transmission device, and the normal operation state of the worm gear transmission device to be detected is simulated; b. worm gear transmission running-in parameters are set through a control console; c. the running-in test is performed, data signals are transmitted to a control circuit composed of a PLC programmable controller through the control console, motor output is controlled, the worm gear transmission device is driven to rotate according to the running-in parameters, and worm gear pair grinding is performed; meanwhile, dynamic torque sensors and laser displacement sensors collect, save and display (digital display and graphic display) detection data in real time.

[0043] The application relates to a worm gear transmission state assembly gap precision measurement method, characterized by comprising the following steps: a. the worm shaft axial displacement is accurately measured to ensure the gap precision in the assembly process; b. a laser displacement sensor emits a laser beam to irradiate a single position of a worm gear surface of a worm gear transmission device to be detected, measures a laser beam return phase difference, calculates the principle of single position displacement of the worm gear surface, applies the same fixed torsion of right-handed and left-handed rotation, that is, applies equal load torque values in opposite directions, makes the worm gear generate relative displacement under the force condition, keeps the laser displacement sensor still, records the worm gear surface displacement at this time, determines the worm and worm gear cooperation gap by the difference between the two recorded displacement values, and outputs the worm and worm gear cooperation gap measurement value to a computer system; c. a displacement data fluctuation graph is generated and displayed to intuitively reflect the displacement fluctuation; and d. the fluctuation graph is printed as a data test report of the worm gear transmission state assembly gap through a connected printing device.

[0044] The application provides a method for determining the slip torque critical value of a friction clutch of a worm gear transmission device, which effectively solves the friction plate pre-tightening force adjustment problem, and is characterized by: a. using an electromagnetic induction technology inductive dynamic torque sensor detection technology to detect the stability of the friction plate under different torque conditions; b. finding the slip torque critical value of the clutch to realize accurate detection of the pre-tightening force of the friction plate; and c. adjusting the pre-tightening force of the friction plate of the friction clutch to meet the index requirements of the slip torque of the friction clutch of the worm gear transmission device.

[0045] The application also includes a method for completing the no-load test and load test of the worm gear transmission device and testing the rotation efficiency under different loads, and specifically includes: a. using the combination of the magnetic powder clutch and the servo motor to realize accurate control and monitoring of the running state of the worm gear transmission device; and b. evaluating the performance of the worm gear transmission device according to the size and fluctuation of the input end torque value.

[0046] The application also includes a method for completing the no-load test and load test of the worm gear transmission device and testing the rotation efficiency under different loads, and specifically includes: a. using the combination of the magnetic powder clutch and the servo motor to realize accurate control and monitoring of the running state of the worm gear transmission device; and b. evaluating the performance of the worm gear transmission device according to the size and fluctuation of the input end torque value.

[0047] a. using the combination of the magnetic powder clutch and the servo motor to realize accurate control and monitoring of the running state of the worm gear transmission device;

[0048] b. evaluating the performance of the worm gear transmission device according to the size and fluctuation of the input end torque value.

[0049] The application relates to a method for detecting the assembly precision of a worm gear transmission device, and is characterized by comprising the following steps:

[0050] a. after the worm gear pair is ground and detected, the axial displacement of the worm gear is accurately measured to ensure the gap precision in the assembly process;

[0051] b. using a laser displacement sensor (9) to record the distance of the worm gear tooth surface, real-time monitoring the displacement change of the worm gear, and transmitting the detection data to a computer system;

[0052] c. generating and displaying a fluctuation graph of the displacement data to intuitively reflect the displacement fluctuation amount;

[0053] d. printing the fluctuation graph as a data inspection report of the assembly gap of the worm gear transmission device by connecting a printing device.

[0054] The application provides a method for determining the slip torque critical value of a friction clutch of a worm gear transmission device, which effectively solves the friction plate pre-tightening force adjustment problem, and is characterized by:

[0055] a. Using electromagnetic induction technology inductive dynamic torque sensor detection technology, detect the stability of the friction plate under different torque conditions;

[0056] b. By finding the slip torque critical value of the clutch, the pre-tightening force of the friction plate is accurately detected;

[0057] c. By inputting a predetermined torque through the magnetic powder clutch (8), the slip of the friction plate is determined, and the pre-tightening force of the friction clutch of the friction clutch is adjusted to meet the slip torque requirements of the worm gear transmission device.

[0058] In the preferred embodiment, the friction clutch slip test; disconnect the worm (11) and the rotating motor (5) connected, the detected worm gear transmission device is connected to the friction clutch. After the magnetic powder clutch (8) is connected to the direct current power supply, an electromagnetic field is generated, the working medium magnetic powder forms a magnetic powder chain under the action of the magnetic force line, and the inner rotor and the outer rotor of the magnetic powder clutch are connected, so that the torque is transmitted. The torque of the magnetic powder clutch and the excitation current are basically linearly related, and the torque can be controlled by changing the excitation current. The torque applied by the output shaft of the measured worm gear transmission device is continuously increased, and when the load torque value on the control console is increased to a predetermined torque value (friction plate slip rated torque value), the friction clutch slips, the magnetic powder clutch brake acts, and at the same time the magnetic powder clutch servo motor (4) loses power and stops outputting torque. If the friction clutch does not slip, the control console controls the magnetic powder clutch servo motor to be powered off, adjusts the pre-tightening force of the friction plate, and tests again until the friction clutch slips.

[0059] In the preferred embodiment, the detection result can be directly transmitted to the computer of the control console (20), and a detection fluctuation chart can be formed. The USB printer is connected externally, and the detection data fluctuation chart can be directly printed.

[0060] The worm gear transmission device assembly precision and transmission performance detection method provided by the application comprises the following steps:

[0061] When used for the first time, the cleaned and pretreated worm and the worm are precisely installed in the worm gear transmission device assembly precision and transmission performance detection system, and precise alignment of the center line is ensured by using precise measuring tools; the computer system is started to execute the boot sequence, load the necessary software modules and drivers, and then activate the rotating motor (4) drive output shaft; the laser displacement sensor (9) is precisely calibrated, and the rate, channel allocation and trigger parameter configuration are performed; under the condition of no external force, the initial relative position of the worm and the worm is recorded by the laser displacement sensor (9) as the reference data.

[0062] First use, further, by gradually applying a preset torque through the magnetic powder clutch (8), the relative displacement of the worm gear and worm is generated, and in the process, the laser displacement sensor (9) continuously monitors and records the displacement data.

[0063] First use, further, the dynamic torque sensor (21, 22) installed on the platform transmission mechanism transmission shaft is used to monitor the input speed, output speed, input torque, output torque data of the transmission at any time; through the console (20), the running-in parameters of the detected worm gear transmission are set as required: set the speed, transmission direction (forward, reverse), transmission time, load, etc. The transmission control circuit of the control system controls the rotating motor (5) to output torque as required, and the magnetic powder clutch servo motor (4) applies load through the magnetic powder clutch (8). After the running-in is completed according to the set time, the worm is manually rotated to ensure uniform and non-stuck coating of the method of using the powder, the meshing tooth surface is colored in the figure, and the contact area along the tooth length and along the tooth height meets the requirements.

[0064] First use, the friction clutch and the friction plate are uniformly and firmly assembled on the worm shaft, and the predetermined torque threshold value is set through the magnetic powder clutch control unit, which is slightly higher than the slip torque of the friction plate to trigger the slip detection; start the friction clutch slip detection mode, and the magnetic powder clutch (8) gradually increases the torque until the friction plate starts to slip, and the system synchronously records the torque value and the corresponding speed.

[0065] The specific advantages of the present application are as follows:

[0066] The mechatronic device provided by the present application has the ability of no-load and load running-in test, can automatically load and adjust the speed, integrates data acquisition, processing and display functions, and meets the safety and maintainability requirements.

[0067] For the problems of friction detection, pre-tightening force adjustment and the like of the friction clutch assembly, the present application provides an improved detection method. In addition, the present application also includes a method for no-load and load test of the worm gear transmission device, and a method for testing the rotation efficiency under different loads.

[0068] The test bench of the present application adopts modular design, combines hardware components and software systems, ensures that the overall structural design of the test bench meets the actual processing environment, and takes into account the principle of ergonomics.

[0069] The application provides a worm gear transmission device assembly transmission initial period grinding fit method for improving the stability of the worm gear transmission device in use, and a worm gear transmission device transmission mechanism gap measurement process equipment and a method of first running and grinding to realize the worm gear transmission device grinding fit test, then detecting the worm gear transmission device transmission gap to meet the use requirements, and finally detecting the slip torque of the worm gear transmission device friction clutch and adjusting to the required preset value; the process problem of poor stability of the worm gear transmission device assembly transmission initial period, which cannot meet the good stability in use, is solved, and the core transmission data of the worm gear transmission device is accurately measured, and the detection data is displayed in real time (digital display, graphic display), judged and processed during the detection process.

[0070] The method is simple, efficient, and has high automation degree, operability and processability; the system uses safe and reliable sensors for detection, realizes accurate measurement of the worm gear transmission component assembly gap and accurate evaluation of the friction plate slip performance through integration of high-precision laser displacement sensors, computer systems and data acquisition modules. The system uses input motor drive units and magnetic powder clutch control units, can automatically perform no-load and load running test, and produces detailed detection reports through real-time data display analysis. In addition, the system also has comprehensive data acquisition, processing, storage and output capabilities, supports data management, greatly improves the efficiency and accuracy of mechanical transmission device detection, and reduces the operation difficulty. The application is suitable for mechanical transmission system detection in various industrial fields, and has wide application prospect.

[0071] The application can perform no-load and load running test, worm gear transmission device assembly precision and friction clutch slip torque test, realize automatic acceleration and stepless regulation of dynamic speed, has data acquisition, saving, real-time digital display, judgment and processing functions, and meets the safety and maintainability requirements.

[0072] The above is only the preferred embodiment of the application, and it should be noted that those skilled in the art can make several improvements and modifications without departing from the technical principles of the application, and these improvements and modifications should also be considered as the protection scope of the application.

Claims

1. A system for testing the assembly accuracy and transmission performance of a worm gear transmission device, characterized in that, include: Hardware components: including a transmission performance testing platform (1) and a slippage torque testing platform (2) that are perpendicularly distributed to each other, and a dedicated fixed seat (3) for the transmission device located between the two; the transmission performance testing platform (1) is equipped with a rotary motor (5), an input connection auxiliary component (7) and a laser displacement sensor (9); the slippage torque testing platform (2) is equipped with a magnetic powder clutch servo motor (4), a magnetic powder clutch (8) and an output connection auxiliary component (10); Software components include a console (20), a PLC programmable controller (27), and a dynamic torque sensor; the PLC programmable controller (27) is connected to a rotary motor (5), a magnetic powder clutch servo motor (4), a laser displacement sensor (9), and a dynamic torque sensor, and is used to perform no-load / load running-in tests, gap detection, and slippage tests; Connection auxiliary components: Input connection auxiliary component (7) connects worm gear (11) to rotary motor (5), and output connection auxiliary component (10) connects worm wheel to magnetic powder clutch (8).

2. The system according to claim 1, characterized in that: Both the transmission performance testing platform (1) and the slippage torque testing platform are equipped with guide positioning grooves and propulsion servo motors to realize axial feed motion; The dynamic torque sensor (21) is located on the output shaft of the rotary motor (5), and the dynamic torque sensor (22) is located on the output shaft of the magnetic powder clutch (8); The laser displacement sensor (9) is fixed to the platform and is used to irradiate the worm gear tooth surface and record the displacement.

3. The system according to claim 1, characterized in that: The torque of input motor 1 is greater than the maximum torque of the magnetic powder clutch, and the power of input motor 2 is greater than the running-in power.

4. The system according to claim 1, characterized in that: The software component also includes a phase sequence protector (24) to identify the phase sequence of the power supply. When the phase sequence is incorrect, the output relay cannot be connected, thus preventing the power supply from reversing and causing motor failure.

5. A method for testing the assembly accuracy and transmission performance of a worm gear transmission device based on any one of the systems of claims 1-5, characterized in that, Including the following steps: Running-in test: The speed, load and duration are set by the control console (20), the worm is driven by the rotary motor (5), and the magnetic powder clutch (8) applies the load to complete the no-load and load running-in; Clearance detection: After running-in, keep the worm gear meshing state, and use the laser displacement sensor (9) to irradiate a single position on the worm gear tooth surface; control the magnetic powder clutch (8) to apply left-hand / right-hand equal reverse torque, and record the difference in tooth surface displacement to calculate the fit clearance; Slippage test: Disconnect the rotary motor (5), input an increasing torque to the magnetic powder clutch (8) until the friction plate slips, and record the critical slippage torque value.

6. The method according to claim 5, characterized in that, The gap detection specifically includes: Apply a left-handed fixed torque and record the first displacement L1 of the worm gear tooth surface; Apply an equal right-hand torque and record the second displacement L2 of the tooth surface; Calculate the fit clearance ΔL=|L1-L2|, generate a displacement fluctuation diagram and output an inspection report.

7. The method according to claim 5, characterized in that, The slippage test includes: The excitation current of the magnetic powder clutch (8) is linearly related to the torque, and the torque can be gradually increased by adjusting the current; When the torque reaches the slippage threshold, the magnetic powder clutch servo motor (4) is de-energized and braked. If slippage does not occur, adjust the preload of the friction plate and repeat the test.

8. The method according to claim 5, characterized in that, The break-in test also includes: Input / output torque and speed are monitored in real time using a dynamic torque sensor; After running-in, the worm gear was manually rotated to verify that there was no jamming, and the contact area of ​​the tooth surface was tested using the red powder method.

9. A method for detecting the slippage critical value of a friction clutch in a worm gear transmission device, characterized in that: The magnetic powder clutch (8) is used to apply an increasing torque to the worm gear shaft; The output torque and speed change points are collected in real time by a dynamic torque sensor (22); When the torque fluctuation exceeds the threshold, slippage is determined, and the torque value at this time is recorded as the critical value.

10. A method for detecting assembly clearance in a worm gear transmission device, characterized in that, include: After grinding, the worm is fixed, and the laser displacement sensor (9) positions the worm gear tooth surface; Applying bidirectional equal torque to induce relative displacement; An assembly clearance report is generated based on the displacement difference ΔL, where ΔL satisfies: ΔL≤0.05mm.

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