Grinding wheel performance automatic detection equipment

Abstract

Automatic detection equipment for grinding wheel performance belongs to the technical field of detection equipment, and comprises a shell, a control module, an electric heating mechanism, a camera, a test mechanism, a data acquisition unit, a data analysis unit and a data prompt unit, the data acquisition unit, the data analysis unit and the data prompt unit are application software installed in the control module; the electric heating mechanism, the camera, the testing mechanism and the shell are installed together, and the control module is installed in the element box; the testing mechanism comprises a linear bearing, an electric push rod, a pressure sensor, a motor speed reducing mechanism, a clamping head and an electric linear sliding table. The electric heating mechanism comprises a fan, a heating cylinder, a temperature switch and an electric heating pipe. Strength detection can be carried out on the grinding wheel in multiple directions on the basis of high temperature, the software unit related to grinding wheel fragmentation at the first time can record corresponding acting force when the grinding wheel is fragmented, detection personnel can master corresponding data, and beneficial technical support is provided for manufacturers to improve the quality of the grinding wheel.

Description

Technical Field

[0001] The invention relates to the technical field of detection equipment, in particular to an automatic detection device for the performance of a grinding wheel. Background Art

[0002] A handheld angle grinder is a portable power tool primarily used for cutting, grinding, and polishing metal, stone, and other materials. Its features include a lightweight design and multi-purpose functions, making it suitable for home renovation, industrial processing, and other fields. The general structure of a handheld angle grinder includes a housing, a motor, a thin-sheet grinding wheel, and transmission gears. During operation, the motor drives the thin-sheet grinding wheel via the transmission gears (generally including a driving bevel gear and a driven bevel gear, the driving bevel gear is fixedly connected to the motor shaft, the driven bevel gear is fixedly connected to the grinding wheel shaft, the motor drives the vertically distributed driven bevel gear to rotate via the horizontally distributed driving bevel gear, and the driven bevel gear drives the grinding wheel to rotate horizontally). The rotating thin-sheet grinding wheel then acts on the equipment being processed to achieve the working purposes of cutting, grinding, and polishing.

[0003] Grinding wheels are an important component of handheld angle grinders, and their performance is directly related to whether the handheld angle grinder can be used normally. Therefore, both the production end and the user end have the need to test the performance of grinding wheels. Existing grinding wheel testing mechanisms generally install the grinding wheel on the motor shaft, and then use the grinding wheel to act on the metal module to be tested. By observing the effect of the grinding wheel on the metal module, etc., the performance data of the grinding wheel is obtained. Specifically, the larger the area of ​​the metal module that is ground or cut, the smaller the grinding wheel wear, the better the grinding wheel performance, and vice versa. Although the above detection method meets the detection needs to a certain extent, it is limited by its structure and function and still has the following technical shortcomings. Specifically, it can only obtain the wear resistance data of the grinding wheel, but cannot obtain the strength data of the grinding wheel (nor can it obtain the strength data of the grinding wheel at the corresponding temperature). In fact, the strength data of the grinding wheel at the corresponding higher temperature is extremely important. When the continuous working temperature is higher and the strength is not enough to contact objects for grinding or cutting, when the staff operates the angle grinder, the grinding wheel is offset up or down, left or right, etc. to contact the grinding or cutting objects, etc., it is relatively easy to break, and the fragments flying after the breakage pose a threat to the safety of the staff. Summary of the Invention

[0004] In order to overcome the drawbacks of the existing handheld angle grinder's grinding wheel performance detection mechanism due to structural limitations as described in the background technology, the present invention provides an automatic grinding wheel performance detection device that can, under the joint action of relevant mechanisms and software units, perform strength detection on the upper or lower, front or rear, and circumferential directions of the grinding wheel at a higher temperature as needed. During the detection, the force acting on the broken grinding wheel can be recorded at the first moment of the grinding wheel breaking, and the detection personnel can intuitively grasp the corresponding data, which provides favorable technical support for manufacturers to improve the quality of grinding wheels.

[0005] The technical solution adopted by the present invention to solve its technical problem is: An automatic testing device for the performance of a grinding wheel comprises a shell, a control module, an electric heating mechanism, a camera, and a testing mechanism, a data acquisition unit, a data analysis unit, and a data prompting unit; a movable door is installed at the front end of the shell, and an air vent is provided at the side end of the shell; the data acquisition unit, the data analysis unit, and the data prompting unit are application software installed in the control module; the electric heating mechanism comprises a fan, a heating cylinder, a temperature switch, and an electric heating tube; an air outlet pipe and an air inlet pipe are fixedly installed at the upper and lower ends of the heating cylinder, respectively; the electric heating tube is insulated and fixedly installed in the heating cylinder; the fan is fixedly installed at the lower part of one side end in the shell; the exhaust pipe of the fan and the air inlet pipe of the heating cylinder are fixedly connected; the air outlet pipe of the heating cylinder is fixedly installed with a hot air pipe, and the camera is fixedly installed at the side end of the hot air pipe; the testing mechanism comprises a linear bearing, an electric push rod, a pressure sensor, a motor reduction mechanism, a clamping head, and an electric linear slide; there are multiple pressure sensors, and there are at least two electric push rods, linear bearings, and clamping heads respectively. The two linear bearings and the lower end of the cylinder of the first electric push rod are respectively fixedly mounted on one side of the lower end of the shell, the lower end of the first pressure sensor is fixedly mounted on the upper end of the movable column of the first electric push rod, the upper end of the bearing rod of the linear bearing and the upper end of the first pressure sensor are respectively fixedly mounted on the lower end of the outer cylinder of the second electric push rod; the electric linear slide is fixedly mounted on the other side of the lower end of the shell, the motor reduction mechanism is fixedly mounted on the sliding block of the electric linear slide, and the outer ends of the fixing clamps of the two clamping heads are respectively fixedly mounted with the side ends of the movable column of the second electric push rod and the side end of the rotating shaft of the motor reduction mechanism; the two side ends of the sliding block of the electric linear slide are respectively fixedly mounted with springs, and the lower ends of the second pressure sensor and the third pressure sensor are respectively fixedly mounted on the two side ends of the outer shell of the electric linear slide; the signal output ends of the pressure sensor, camera, pressure sensor A and the multi-channel signal input end of the control module are respectively electrically connected, and the control module is installed in the component box.

[0006] Furthermore, one end of the hot air pipe is located between the upper parts of the two clamping heads.

[0007] Furthermore, in the electric heating mechanism, the temperature switch is fixedly mounted on the outside of the heating tube, and one end of the temperature switch is electrically connected to the power input end of the electric heating tube.

[0008] Furthermore, the movable door is made of transparent material.

[0009] Furthermore, the control module has a small computer system.

[0010] Furthermore, outer sides of the two springs are in contact with the force-bearing surfaces of the second pressure sensor and the third pressure sensor respectively.

[0011] Furthermore, the data acquisition unit can collect the grinding wheel image taken by the camera, as well as the pressure signals input by three pressure sensors and one pressure sensor A, and output the above data to the data analysis unit after preliminary processing; the data analysis unit can output a signal to the data prompt unit after the grinding wheel is broken during the test, and the data prompt unit can generate an alarm signal to prompt the inspection personnel when the grinding wheel is broken. The inspection personnel can check the pressure signals output by the three pressure sensors and one pressure sensor A during the inspection, and then derive the performance of the grinding wheel based on the pressure signals.

[0012] Furthermore, when the grinding wheel is broken, the greater the maximum pressure output by the second and third pressure sensors and pressure sensor A is, the better the performance of the grinding wheel is, and vice versa; when the first pressure sensor moves upward and the grinding wheel is broken, the greater the maximum pressure output is, the better the performance of the grinding wheel is, and vice versa; when the first pressure sensor moves downward and the grinding wheel is broken, the smaller the minimum pressure output is, the better the performance of the grinding wheel is, and vice versa.

[0013] Furthermore, the first clamping head includes a fixed clamp, a pressure sensor A, and an electric push rod A. There is an axial hole at the upper end of the fixed clamp, the cylinder of the electric push rod A is fixedly installed on the upper end of the fixed clamp, and the force-bearing surface of the pressure sensor is fixedly installed at the lower end of the movable column of the electric push rod A and is located on the upper inner side of the fixed clamp.

[0014] Furthermore, the second clamping head includes a fixed clamp, a movable block, and an electric push rod A. The upper end of the fixed clamp has an axial hole, the cylinder of the electric push rod A is fixedly installed on the upper end of the fixed clamp, and the movable block is fixedly installed on the lower end of the movable column of the electric push rod A and is located on the upper inner side of the fixed clamp.

[0015] Compared with the existing technology, the present invention has the following advantages: the present invention can, as needed, use an electric heating mechanism at a higher temperature to perform strength testing on the upper or lower, front or back, and circumferential directions of the grinding wheel through a testing mechanism. During the test, at the first moment of the grinding wheel breaking, the relevant software unit of the testing mechanism can record the corresponding force when the grinding wheel breaks, allowing the tester to intuitively grasp the corresponding data at the first moment, providing favorable technical support for manufacturers to improve the quality of grinding wheels and ensure the quality of handheld angle grinders. In summary, the present invention has good application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 It is a circuit diagram of the present invention. DETAILED DESCRIPTION

[0019] Figure 1 、 2As shown, an automatic detection device for the performance of a grinding wheel comprises a housing 1, a power module W1, a control module W5, an electric heating mechanism, a power switch, a camera SX, and also has a testing mechanism, a data acquisition unit, a data analysis unit, and a data prompting unit; the front end of the housing 1 is hingedly mounted with two movable doors 101, and the left and right sides of the housing 1 are respectively provided with a plurality of vents (so that the external air can communicate with the inside of the housing), the data acquisition unit, the data analysis unit, and the data prompting unit are application software installed in the control module W5; the electric heating mechanism comprises a fan FJ, a heating cylinder 21, a temperature switch S1, and an electric heating tube RT, and the middle of the upper and lower ends of the heating cylinder 21 are respectively fixed An air outlet pipe and an air inlet pipe are installed, the spiral electric heating tube RT is insulated and fixedly installed in the heating tube 21, the fan FJ is fixedly installed in the middle of the left end of the shell 1, the exhaust pipe of the fan FJ (260W) is fixedly connected to the air inlet pipe of the heating tube 21, and a "¬" hot air pipe 22 is fixedly installed on the air outlet pipe of the heating tube 21. The camera SX is fixedly installed on the right outer lower side end of the hot air pipe 22, and the lens of the camera SX is facing downward; the testing mechanism includes a linear bearing 31, electric push rods M and M1, pressure sensors W2, W3, W4, a motor reduction mechanism M2, a clamping head 32, an electric linear slide M3, three pressure sensors, an electric push rod and a linear axis There are two bearings (linear bearing guide function) and clamping heads respectively. The lower ends of the bearing sleeves of the two linear bearings 31 are fixedly installed at the left middle of the lower end of the shell 1 at a left and right distance. The lower end of the cylinder of the first electric push rod M is fixedly installed at the lower end of the shell 1 between the two linear bearings 31. The mounting surface of the first pressure sensor W2 is fixedly installed at the upper end of the movable column of the first electric push rod M. The upper ends of the bearing rods of the two linear bearings 31 and the force-bearing surface of the first pressure sensor W2 are fixedly installed at the lower end of the cylinder of the second electric push rod M1 distributed laterally; the electric linear slide M3 is fixedly installed laterally at the middle of the right end of the shell 1, and the sliding of the electric linear slide M3 A fixed seat is fixedly mounted on the upper end of the movable block. The housing of the motor reduction mechanism M2 is laterally fixedly mounted on the fixed seat. The outer sides of the fixing clamps of the two clamping heads 32 are respectively fixedly mounted to the right end of the movable column of the second electric push rod M1 and the left end of the rotating shaft of the motor reduction mechanism M2. A spring 33 is fixedly mounted in the middle of the left and right ends of the sliding block of the electric linear slide M3. The lower ends of the second pressure sensor W3 and the third pressure sensor W4 are respectively fixedly mounted in the middle of the left and right ends of the housing of the electric linear slide M3. The outer sides of the two springs 33 contact the force-bearing surfaces of the second and third pressure sensors W3 and W4. The power module W1, control module W5, and power switch are installed in the component box 4, which is fixedly mounted on the front right outer end of the housing 1.

[0020] Figure 1 、 2As shown, the right end of the hot air pipe 22 is located in the middle of the upper end of the housing 1, between the two clamping heads 32. In the electric heating mechanism, a temperature switch S1 is fixedly mounted on the outside of the heating tube 21, with its temperature-sensing surface in close contact with the outside of the heating tube 21. One end of the temperature switch S1 is connected to one terminal of a 220V AC power supply via a wire, and the other end of the temperature switch S1 is connected to the power input terminal of the electric heating tube RT via a wire. The movable door 101 is made of transparent plastic. The control module W5 includes a small computer system. The data acquisition unit captures images of the grinding wheel captured by the camera, as well as pressure signals input from three pressure sensors and one pressure sensor A. After preliminary processing, this data is output to the data analysis unit. The data analysis unit can also output a signal to the data prompt unit if the grinding wheel breaks during testing. The data prompt unit generates an alarm signal to alert the inspector if the grinding wheel breaks. The inspector can access the pressure signals output by the three pressure sensors and one pressure sensor A during testing and derive the grinding wheel's performance based on the pressure signals. When the grinding wheel is broken, the higher or lower the maximum pressure output by the three pressure sensors and one pressure sensor A, the better the grinding wheel performance. Conversely, the lower the pressure, the worse the performance. The first clamping head includes a "["-shaped fixing clamp 321, a pressure sensor AW6, and an electric push rod AM4. There is an axial hole in the middle of the upper end of the fixing clamp 321. The cylinder of the electric push rod AM4 is vertically fixed to the upper end of the fixing clamp 321, and its movable column enters the upper end of the fixing clamp 321 through the axial hole. The pressure surface of pressure sensor W6 is fixed to the lower end of the movable column of the electric push rod AM4 and is located on the upper inner side of the fixing clamp 321. The middle of the left outer end of the fixing clamp 321 and the right end of the movable column of the electric push rod M1 are fixed together. The second clamping head includes a "["-shaped fixed clamp 322, a movable block 323, and an electric push rod AM5. There is an axial hole in the middle of the upper end of the fixed clamp 322. The cylinder of the electric push rod AM5 is vertically distributed and fixedly installed on the upper end of the fixed clamp 322, and its movable column enters the upper end of the fixed clamp 322 through the axial hole. The upper middle part of the movable block 323 is fixedly installed on the lower end of the movable column of the electric push rod AM5 and is located on the upper inner side of the fixed clamp 322. The right outer side of the fixed clamp is fixedly installed with the left end of the rotating shaft of the motor reduction mechanism.

[0021] Figure 1 、 2As shown, wires connect power module W1's power input pins 1 and 2, temperature switch S1's one end, heating tube RT's other power input pin, fan FJ's power input, and both ends of the AC 220V power supply. Also connected are control module W5's power input pins 1 and 2, power switches D, D1, D2, D3, D4, and D5's power input pins 1 and 2, pressure sensors W2, W3, and W4's power input pins 1 and 2, pressure sensor AW5's power input pins 1 and 2, camera SX's power input, and power module W1's power output pins 3 and 4. Wires also connect the signal outputs of pressure sensors W2, W3, and W4, camera SX, and pressure sensor AW6 to control module W5's five signal input pins 4, 5, 6, 3, and 7, respectively. The power output terminals 3, 4 and 5, 6 of the power switches D, D1, D2, D3, D4, and D5 are connected to the positive and negative and negative and negative and positive power input terminals of the first electric push rod M, the second electric push rod M1, the motor reduction mechanism M2, the electric linear slide M3, and the two electric push rods AM4 and M5 through wires.

[0022] Figure 1 、 2As shown, after the AC 220V power supply enters the power input terminal of the power module W1, the 3rd and 4th pins of the power module W1 output a stable DC 12V power supply to the control module W5, the power switches D, D1, D2, D3, D4, D5, the pressure sensors W2, W3, W4 and the pressure sensor AW6, and the power input terminal of the camera SX. The detection process of the present invention is as follows: (1): The detection personnel put the left and right ends of the grinding wheel to be detected into the two fixing clamps 321 and 322 respectively, and then manually turn the handles of the power switches D4 and D5 to the left. The power input terminals 1 and 2 and 3 and 4 of the power switches D4 and D5 are connected respectively, and the movable columns of the electric push rods AM4 and AM5 move downward. In this way, the force-bearing surface of the pressure sensor AW6 and the lower end of the movable block 323 will press the upper left and right ends of the grinding wheel (after the detection, manually turn the handles of the power switches D4 and D5 to the right and then remove the grinding wheel). (2): When detecting the upper and lower fracture thresholds of the grinding wheel, when the staff turns the handle of the power switch D to the left or right, the 1st and 2nd pins and the 3rd and 4th pins or the 5th and 6th pins of the power switch D are connected respectively. In this way, the movable column of the electric push rod M drives the left side of the grinding wheel to move upward or downward. After the grinding wheel breaks, the power switch D is turned off. When the electric push rod M drives the pressure sensor W2 to move upward or downward, the 3rd pin of the pressure sensor W2 will output a dynamically changing voltage signal to the 4th pin of the control module W5 (the greater the upward movement resistance of the pressure sensor W2 (the grinding wheel's upward movement fracture force is relatively large), the pressure signal output by the pressure sensor W2 is relatively high; the greater the downward movement distance of the pressure sensor W2 (the grinding wheel's downward movement fracture force is relatively large), the pressure signal output by the pressure sensor W2 is relatively low. (3) Detecting the fracture thresholds of the front and rear (corresponding to the left and right of the attached figure) of the grinding wheel When the staff turns the handle of the power switch D3 to the left or right, the 1st and 2nd pins and the 3rd and 4th pins or the 5th and 6th pins of the power switch D3 are connected respectively. In this way, the movable block of the electric linear slide M3 drives the grinding wheel to move forward (left) or backward (right). After the grinding wheel breaks, the power switch D3 is turned off. When the movable block of the electric linear slide drives the pressure sensors W3 and W4 to move forward or backward, the force-bearing surfaces of the pressure sensors W3 and W4 are subjected to the compression force of the spring, and their 3rd pins will output dynamically changing voltage signals respectively into the 5th and 6th pins of the control module W5 (the greater the resistance to the forward movement of the pressure sensor W3 (the force causing the grinding wheel to break when it moves forward is relatively large), the pressure signal output by the pressure sensor W3 is relatively high; the greater the resistance to the backward movement of the pressure sensor W4 (the force causing the grinding wheel to break when it moves backward is relatively large), the pressure signal output by the pressure sensor W4 is relatively high).(4) When detecting the longitudinal left or right fracture threshold of the grinding wheel (in this mode, the movable column of the electric push rod AM4 drives the force surface of the pressure sensor AW6 to just touch the upper left end of the grinding wheel), when the staff turns the handle of the power switch D2 to the left or right, the 1st and 2nd pins and the 3rd and 4th pins or the 5th and 6th pins of the power switch D2 are connected respectively. In this way, the shaft of the motor reduction mechanism M2 will drive the grinding wheel to move counterclockwise to the left or clockwise to the right. After the grinding wheel breaks, the power switch D2 is turned off. When the shaft of the motor reduction mechanism M2 drives the grinding wheel to move counterclockwise to the left or clockwise to the right, the 3rd pin of the pressure sensor AW6 will output a dynamically changing voltage signal to the 7th pin of the control module W5 (the pressure sensor When the resistance to the left or right movement of the sensor AW6 is greater (the force of the grinding wheel breaking when moving to the left or right is relatively large), the pressure signal output by the pressure sensor AW6 is relatively high. The above (1)-(4) processes are actually tested one at a time, and the entire (1)-(4) process needs to be tested four times. In order to test grinding wheels with more outer diameters, the staff can turn the handle of the power switch D1 to the left or right, and the 1, 2 pins and 3, 4 pins or 5, 6 pins of the power switch D1 are connected respectively. In this way, the movable column of the electric push rod M1 will drive the fixing clamp 32 to move forward or backward, and the distance between the two fixing clamps 321 and 322 will be expanded or reduced, so that the performance test of grinding wheels with different outer diameters can be conveniently performed.

[0023] Figure 1 、 2As shown, when the inspector detects the breakage performance of the grinding wheel, the camera SX (the output video signal enters the 3rd pin of the control module W5) will collect data in real time and output it to the data acquisition unit. The data acquisition unit collects the image of the grinding wheel taken by the camera, as well as the pressure signals input by three pressure sensors and one pressure sensor A, and outputs the above data to the data analysis unit after preliminary processing; the data analysis unit can output a signal to the data prompt unit after the grinding wheel is broken during the test, and the data prompt unit can generate an alarm signal to prompt the inspector when the grinding wheel is broken. The inspector can read the pressure signals output by the three pressure sensors and one pressure sensor A during the test, and then derive the performance of the grinding wheel according to the pressure signals. (When the grinding wheel is broken, the pressure sensor W2 moves upward and outputs the highest pressure signal, which is the maximum threshold data for the tested grinding wheel to bend upward and break; the pressure sensor W2 moves downward and outputs the lowest pressure signal, which is the maximum threshold data for the tested grinding wheel to bend downward and break; the pressure sensor W3 moves forward and outputs the highest pressure signal, which is the maximum threshold data for the tested grinding wheel to bend forward and break; the pressure sensor W4 moves backward and outputs the highest pressure signal, which is the maximum threshold data for the tested grinding wheel to bend backward and break; the pressure sensor WA6 moves left or right and outputs the highest pressure signal, which is the maximum threshold data for the tested grinding wheel to bend left or right and break). In the present invention, when the temperature of the heating tube is lower than a certain level (for example, lower than 150°C), the internal contacts of the temperature switch S1 are closed, so that the electric heating tube RT is powered to generate heat to heat the heating tube; when the temperature is higher than 150°C, the internal contacts of the temperature switch S1 are opened, so that the electric heating tube RT no longer heats the heating tube; after the fan FJ is powered on, the air blown out is heated by the heating tube, and then ejected from the lower end of the hot air pipe 22 to heat the surface of the grinding wheel between the two fixed clamps, so that the force data of the grinding wheel breaking on the actual higher temperature basis (for example, when the grinding wheel grinds the workpiece, heat is generated and the heat acts on the grinding wheel) can be simulated.

[0024] Figure 1 、 2 As shown above, the present invention can perform strength testing on the upper or lower, front or back, circumferential direction, etc. of the grinding wheel through an electric heating mechanism at a higher temperature as needed, and through a testing mechanism. During the test, at the first moment of the grinding wheel breaking, the relevant software unit of the testing mechanism can record the corresponding force when the grinding wheel is broken, and the testing personnel can intuitively grasp the corresponding data at the first moment, which provides favorable technical support for manufacturers to improve the quality of grinding wheels and ensure the quality of handheld angle grinders. Figure 2Among them, the power module W1 is a finished product of an AC 220V to DC 12V power module; the electric push rods M, M1 and the electric push rod AM5 (pen-type electric telescopic rod) are DC reciprocating electric telescopic rods; the motor reduction mechanism M2 is a finished product of a DC coaxial motor gear reducer; the electric screw slide M3 is a finished product of a DC electric screw slide; the pressure sensors W2, W3, W4 and the pressure sensor AM6 are finished products of model BCLT-F tension and pressure sensors (the greater the pressure on the load surface, the higher the output voltage signal, and vice versa); the temperature switch S1 is a finished product of a normally closed contact snap-action temperature control switch; the electric heating tube RT power is 1KW.

[0025] The basic principles and main features of the present invention and the advantages of the present invention are shown and described above. It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be regarded in all respects as illustrative and non-restrictive. The scope of the present invention is defined by the appended claims rather than the foregoing description, and all changes that come within the meaning and range of equivalents of the claims are intended to be included therein.

[0026] In addition, it should be understood that although this specification is described in terms of implementation methods, the implementation methods do not only include an independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in the embodiments can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A grinding wheel performance automatic detection device, comprising a housing, a control module, an electric heating mechanism, and a camera, characterized in that: The evaporator is provided with a plurality of control buttons, and the control panel is provided with a plurality of control buttons, and the control panel is provided with a plurality of control buttons. The control panel is provided with a plurality of control buttons, and the control panel is provided with a plurality of control buttons. The lower ends are respectively fixedly mounted on one side of the lower end of the shell, the lower end of the first pressure sensor is fixedly mounted on the upper end of the movable column of the first electric push rod, the upper end of the bearing rod of the linear bearing and the upper end of the first pressure sensor are respectively fixedly mounted on the lower end of the cylinder body of the second electric push rod; the electric linear slide is fixedly mounted on the other side of the lower end of the shell, the motor reduction mechanism is fixedly mounted on the sliding block of the electric linear slide, and the outer ends of the fixing clamps of the two clamping heads are respectively fixedly mounted with the side ends of the movable column of the second electric push rod and the side end of the rotating shaft of the motor reduction mechanism; the two side ends of the sliding block of the electric linear slide are respectively fixedly mounted with springs, and the lower ends of the second pressure sensor and the third pressure sensor are respectively fixedly mounted on the two side ends of the outer shell of the electric linear slide; the signal output ends of the pressure sensor, camera, pressure sensor A and the multi-channel signal input end of the control module are respectively electrically connected, and the control module is installed in the component box.

2. The automatic testing device for grinding wheel performance according to claim 1, characterized in that: One end of the hot air pipe is located between the upper parts of the two clamping heads.

3. The automatic testing device for grinding wheel performance according to claim 1, characterized in that: In the electric heating mechanism, the temperature switch is fixedly installed on the outside of the heating tube, and one end of the temperature switch is electrically connected to the power input end of the electric heating tube.

4. The automatic testing device for grinding wheel performance according to claim 1, characterized in that: The trap door is made of transparent material.

5. The automatic testing device for grinding wheel performance according to claim 1, characterized in that: The control module has a small computer system.

6. The automatic testing device for grinding wheel performance according to claim 1, characterized in that: The outer sides of the two springs are in contact with the force-bearing surfaces of the second pressure sensor and the third pressure sensor respectively.

7. The automatic testing device for grinding wheel performance according to claim 1, characterized in that: The data acquisition unit can collect the grinding wheel pictures taken by the camera, as well as the pressure signals input by three pressure sensors and one pressure sensor A, and output the above data to the data analysis unit after preliminary processing; the data analysis unit can output a signal to the data prompt unit after the grinding wheel is broken during the test, and the data prompt unit can generate an alarm signal to prompt the inspection personnel when the grinding wheel is broken. The inspection personnel can check the pressure signals output by the three pressure sensors and one pressure sensor A during the inspection, and then derive the performance of the grinding wheel based on the pressure signals.

8. The automatic testing device for grinding wheel performance according to claim 1, characterized in that: When the grinding wheel is broken, the greater the maximum pressure output by the second and third pressure sensors and pressure sensor A is, the better the performance of the grinding wheel is, and vice versa. When the first pressure sensor moves upward and the grinding wheel is broken, the greater the maximum pressure output is, the better the performance of the grinding wheel is, and vice versa. When the first pressure sensor moves downward and the grinding wheel is broken, the smaller the minimum pressure output is, the better the performance of the grinding wheel is, and vice versa.

9. The automatic testing device for grinding wheel performance according to claim 1, characterized in that: The first clamping head includes a fixed clamp, a pressure sensor A, and an electric push rod A. There is an axial hole at the upper end of the fixed clamp. The cylinder of the electric push rod A is fixedly installed on the upper end of the fixed clamp. The force-bearing surface of the pressure sensor is fixedly installed at the lower end of the movable column of the electric push rod A and is located on the upper inner side of the fixed clamp.

10. The automatic testing device for grinding wheel performance according to claim 1, characterized in that: The second clamping head includes a fixed clamp, a movable block, and an electric push rod A. There is an axial hole at the upper end of the fixed clamp. The cylinder of the electric push rod A is fixedly installed at the upper end of the fixed clamp. The movable block is fixedly installed at the lower end of the movable column of the electric push rod A and is located on the upper inner side of the fixed clamp.

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