Three-point gripping detection structure, grinding wheel piece size detection machine and detection method

Abstract

The present application relates to the technical field of grinding wheel piece size detection, in particular to a three-point type grabbing detection structure, a grinding wheel piece size detection machine and a detection method, which comprises a frame structure, a lifting piece capable of moving in the vertical direction is arranged on the frame structure; a plurality of groups of sliding pieces are arranged on the lifting piece at equal intervals in the circumferential direction, a driving structure capable of driving the grinding wheel piece to rotate is arranged on the sliding piece; an expansion structure is arranged on the lifting piece and connected with the sliding piece, a recess groove is formed on the expansion structure, and the expansion structure can drive the driving structure to clamp the grinding wheel piece; an energy storage structure is arranged on the lifting piece, the energy storage structure cooperates with the recess groove, and the driving structure can keep the clamping and releasing states of the grinding wheel piece; two groups of abutting pieces are arranged on the frame structure, the two groups of abutting pieces cooperate with trigger parts arranged on the expansion structure, and the expansion structure can be driven to move, so that the size detection and the out-of-roundness detection of the grinding wheel piece are realized at the same time.

Description

Technical Field

[0001] The invention relates to the technical field of grinding wheel size detection, in particular to a three-point grabbing detection structure, a grinding wheel size detection machine and a detection method. Background Art

[0002] As the most important type of abrasive tool in grinding processing, grinding wheels not only improve work efficiency and product quality, but also ensure work safety, increase the economic benefits of the enterprise, adapt to different processing needs, and extend their service life. They are widely used in many fields such as automobile manufacturing, aerospace, etc.

[0003] In the production process of grinding wheels, the detection of their dimensions is an indispensable project.

[0004] In order to increase the detection speed, the existing grinding wheel size detection equipment mostly adopts the batch detection method, and most of the detection devices can only detect whether the grinding wheel size is too large or too small, and need to cooperate with other equipment to transfer and classify the grinding wheels after detection. This makes the entire detection system large and complicated. At the same time, the actions between the detection device and the transfer and classification equipment need to be coordinated, otherwise there will be action differences and it is impossible to establish a good detection system. Summary of the Invention

[0005] The purpose of the present invention is to provide a three-point grab detection structure, a grinding wheel size detection machine and a detection method to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] Three-point grasping detection structure, including:

[0008] A frame structure, wherein the frame structure is provided with a lifting member capable of moving in a vertical direction;

[0009] Sliding members are provided in multiple groups and are equidistantly mounted on the lifting member. A driving structure capable of driving the grinding wheel to rotate is mounted on the sliding members.

[0010] An expansion and retraction structure is installed on the lifting member and connected to the sliding member, a recessed groove is formed on the expansion and retraction structure, and the expansion and retraction structure can drive the driving structure to clamp the grinding wheel;

[0011] An energy storage structure is provided on the lifting member, and the energy storage structure cooperates with the recessed groove to enable the driving structure to maintain a clamping and releasing state of the grinding wheel;

[0012] Two groups of abutment members are provided and installed on the frame structure. The two groups of abutment members cooperate with the triggering part provided on the expansion and retraction structure to drive the expansion and retraction structure to move.

[0013] As a further solution of the present invention: a first electric telescopic rod is mounted on the frame structure, an actuating end of the first electric telescopic rod is connected to a connecting frame, the connecting frame is provided with a plurality of connecting rods equidistantly along its length, an end of the connecting rod away from the connecting frame is connected to a mounting frame, the connecting rod and the mounting frame forming the lifting member;

[0014] The mounting frame is provided with a plurality of first sliding grooves, and the sliding member is slidably connected to the first sliding grooves.

[0015] As a further solution of the present invention: the driving structure includes a motor and a pressure sensor integrated on the sliding member, and the rotating shaft of the motor passes through the sliding member and is connected to an abutting roller.

[0016] As a further embodiment of the present invention, the interior of the connecting rod is a hollow structure, the expanding and retracting structure includes a lifting shaft that passes through the mounting frame and is slidably engaged with the connecting rod, the lifting shaft passes through the connecting rod and is connected to a connecting ring, the connecting ring is fixedly connected to the triggering portion, and a pulling rod is rotatably mounted on the connecting ring, and the pulling rod is rotatably connected to the sliding member at one end away from the connecting ring;

[0017] The recessed groove includes two groups of inclined surfaces provided on the lifting shaft, and an outer protrusion is formed between the two groups of inclined surfaces.

[0018] As a further solution of the present invention: the energy storage structure includes a hysteresis sleeve fixedly mounted on the mounting frame, a telescopic shaft slidably mounted in the hysteresis sleeve, and an abutment wheel capable of rolling in the recessed groove rotatably mounted on one end of the telescopic shaft;

[0019] A limit ring is also provided on the telescopic shaft, and a cylindrical spring sleeved on the telescopic shaft is connected to the limit ring and the inner wall of the hysteresis sleeve.

[0020] The grinding wheel size detection machine includes the three-point grab detection structure and further includes:

[0021] A first supporting plate and a second supporting plate, wherein the first supporting plate and the second supporting plate are arranged on the frame structure and used for supporting the grinding wheel;

[0022] a pulling assembly connected to the first supporting plate and the connecting frame, wherein the pulling assembly is capable of deflecting the first supporting plate after the connecting frame rises to a predetermined position;

[0023] a transmission assembly connecting the first supporting plate and the second supporting plate, wherein the transmission assembly is capable of driving the second supporting plate to move toward a position directly below the connecting frame when the first supporting plate deflects;

[0024] A second electric telescopic rod is arranged on the frame structure, the second electric telescopic rod is electrically connected to the pressure sensor, and an arc-shaped piece is connected to the action end of the second electric telescopic rod. When the pressure value applied to the pressure sensor exceeds a preset value, the second electric telescopic rod can drive the arc-shaped piece to move toward the second support plate.

[0025] As a further solution of the present invention: the pulling assembly includes a pulling rod provided on the frame structure, and both ends of the pulling rod are respectively provided with a second sliding groove and an engaging groove;

[0026] The pulling assembly further includes a sliding connection portion provided at the end of the connecting frame and an interlocking shaft rotatably mounted on the first supporting plate. The sliding connection portion can slide in the second sliding groove, and the interlocking shaft can roll in the interlocking groove.

[0027] As a further solution of the present invention: a bracket is fixedly mounted on the frame structure, and a transverse groove is provided on the bracket, and a groove wheel rotatably mounted on the end of the second supporting plate can roll in the transverse groove;

[0028] The transmission assembly includes a rack plate fixedly connected to the second supporting plate, an arc-shaped tooth plate fixedly connected to the first supporting plate, and a coaxial wheel set rotatably mounted on the bracket, the coaxial wheel set meshing with the rack plate and the arc-shaped tooth plate;

[0029] The coaxial wheel set includes a first gear and a second gear rotatably mounted on the bracket and coaxially arranged, the first gear is engaged with the rack plate, and the second gear is engaged with the arc-shaped gear plate.

[0030] The method for detecting a grinding wheel using the grinding wheel size detector comprises the following steps:

[0031] Step 1: Place the grinding wheel to be tested on the first supporting plate;

[0032] Step 2: Control the lifting member to move downward, and when the abutment member abuts the trigger portion, the energy storage structure cooperates with the recessed groove, causing the expansion structure to drive the multiple drive structures to move closer to each other, thereby clamping the grinding wheel. When the diameter of the grinding wheel to be tested is smaller than a preset value, the drive structure will not be able to clamp it;

[0033] Step 3: Multiple sets of drive structures cooperate to clamp the grinding wheel to be tested until it is separated from the first support plate, and then the drive structure drives the grinding wheel to be tested to rotate. At this time, when the grinding wheel with a predetermined diameter is out of round, it can be separated from the drive structure during the rotation. The grinding wheel with a diameter larger than the predetermined diameter will cause the pressure value applied to the pressure sensor to be greater than the preset value;

[0034] Step 4: The second electric telescopic rod drives the arc-shaped member to move toward the second supporting plate under the control of the pressure sensor;

[0035] Step 5: The lifting member moves upward, and after it rises to a predetermined height, the first supporting plate deflects under the action of the pulling assembly, and the second supporting plate moves to the bottom of the connecting frame. Then, the triggering portion abuts against another abutting member, causing the multiple drive structures to release the grinding wheel to be tested.

[0036] Step 6: The lifting member moves downward to reset the first support plate and the second support plate. At this time, the arc-shaped member can push away the grinding wheel on the second support plate that is larger than the predetermined diameter and create a position difference with the grinding wheel that meets the production standard;

[0037] Step 7: Collect grinding wheels with diameters smaller than a preset value, larger than a preset value, and meeting production standards.

[0038] Compared with the prior art, the present invention has the following beneficial effects:

[0039] By providing the sliding member, the expansion and contraction structure, the energy storage structure and the abutment member, the three sets of abutment rollers can be pulled to switch between expansion and contraction states, and when switching from the expansion state to the contraction state, the inscribed circle formed by the three sets of abutment rollers has the same diameter as the grinding wheel of standard diameter, so that the three sets of abutment rollers in the contraction state can remove the grinding wheel with a diameter lower than the standard diameter, and when the motor is working, the three sets of abutment rollers can also be used to drive the grinding wheel to rotate, thereby detecting the out-of-roundness of the grinding wheel, thereby improving the detection accuracy and diversity;

[0040] By setting the first supporting plate and the second supporting plate, the pulling assembly, the transmission assembly and the second electric telescopic rod, when the abutment roller moves upward, the first supporting plate can unload the grinding wheel with a diameter smaller than the standard diameter, and the second supporting plate can receive the grinding wheel with a standard diameter and the grinding wheel with a diameter larger than the standard diameter. In the process of resetting the second supporting plate, the pressure sensor can control the position of the arc part through the second electric telescopic rod, so that in the process of resetting the second supporting plate, the grinding wheel with a standard diameter and the grinding wheel with a diameter larger than the standard diameter can be respectively located on both sides of the second supporting plate, thereby facilitating the separation of the grinding wheel with a diameter larger than the standard diameter. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 This is a structural schematic diagram of an embodiment of a grinding wheel size detection machine.

[0042] Figure 2 for Figure 1 A magnified view of the structure at point A in the middle.

[0043] Figure 3 This is a structural schematic diagram from another angle of an embodiment of a grinding wheel size detection machine.

[0044] Figure 4 This is a structural diagram of an embodiment of a three-point grasping detection structure.

[0045] Figure 5 This is a structural diagram of the energy storage structure in one embodiment of a three-point grasping detection structure.

[0046] Figure 6 This is a schematic structural diagram of a pulling assembly in one embodiment of a grinding wheel size detection machine.

[0047] Figure 7 This is a schematic diagram of the structure of the transmission assembly in one embodiment of a grinding wheel size detection machine.

[0048] Figure 8 This is an exploded view of the structure of the transmission assembly in one embodiment of the grinding wheel size detection machine.

[0049] In the figure: 1, frame structure; 2, first electric telescopic rod; 3, connecting frame; 301, sliding connection part; 4, connecting rod; 5, mounting frame; 6, first slide groove; 7, motor; 8, pressure sensor; 9, contact roller; 10, sliding member; 11, pulling rod; 12, connecting ring; 13, trigger part; 14, lifting shaft; 1401, inclined surface; 1402, external protrusion; 15, contact wheel; 16, telescopic shaft; 1601, limit ring; 17, Cylindrical spring; 18. Delay sleeve; 19. First supporting plate; 1901. Interlocking shaft; 1902. Push rod; 20. Bracket; 2001. Transverse groove; 21. Abutment member; 22. Second supporting plate; 23. Sheave; 24. Drawbar; 2401. Second slide groove; 2402. Interlocking groove; 25. Second electric telescopic rod; 26. Arc-shaped member; 27. Rack plate; 28. First gear; 29. ​​Second gear; 30. Arc-shaped gear plate. DETAILED DESCRIPTION

[0050] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0051] In addition, elements in the present application are referred to as "fixed to" or "disposed on" another element, which can be directly on another element or can have a middle element. When an element is considered to be "connected" to another element, it can be directly connected to another element or can have a middle element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation.

[0052] Please refer to Figures 4 and 5 , Figure 7 In the embodiment of the present application, the three-point type grabbing detection structure comprises a frame structure 1, a sliding piece 10, an expansion structure, an energy storage structure and an abutting piece 21.

[0053] The frame structure 1 is provided with a lifting piece capable of moving in the vertical direction. Specifically, the frame structure 1 is provided with a first electric telescopic rod 2, the action end of the first electric telescopic rod 2 is connected with a connecting frame 3, the connecting frame 3 is provided with a plurality of connecting rods 4 at equal intervals along the length direction thereof, the end of the connecting rod 4 away from the connecting frame 3 is connected with a mounting frame 5, the connecting rod 4 and the mounting frame 5 form the lifting piece, and the inside of the connecting rod 4 is a hollow structure.

[0054] The mounting frame 5 is provided with a plurality of first sliding grooves 6, the sliding piece 10 is in sliding connection with the first sliding groove 6, the sliding piece 10 is provided with a driving structure capable of driving the grinding wheel piece to rotate, the driving structure comprises a motor 7 and a pressure sensor 8 integrated on the sliding piece 10, the rotating shaft of the motor 7 penetrates through the sliding piece 10 and is connected with an abutting roller 9.

[0055] In the embodiment, three groups of lifting pieces are provided, and each group of lifting pieces is provided with three groups of sliding pieces 10. At this time, the motor 7, the pressure sensor 8 and the abutting roller 9 corresponding to each group of lifting pieces are also provided with three groups respectively. The sliding piece 10 has two states switched by the expansion structure, the first state is the expansion state, at this time, the plurality of sliding pieces 10 are in the state of moving away from each other, so that in this state, the diameter of the incircle formed by the three groups of abutting rollers 9 is greater than the diameter of the standard grinding wheel piece (the diameter of the standard grinding wheel piece represents the diameter of the grinding wheel piece meeting the production standard), the second state is the folding state, at this time, the plurality of sliding pieces 10 are in the state of moving close to each other, at this time, the diameter of the incircle formed by the three groups of abutting rollers 9 is the diameter of the standard grinding wheel piece, which makes the diameter detection of the grinding wheel piece to be detected when the sliding piece 10 is switched from the expansion state to the folding state, which is specifically reflected in that when the diameter of the grinding wheel piece to be detected is less than the diameter of the standard grinding wheel piece, the three groups of abutting rollers 9 cannot clamp the grinding wheel piece to be detected, thereby realizing the rejection of the grinding wheel piece with a diameter less than the standard diameter.

[0056] Among them, the above-mentioned abutment rollers 9 are made of rubber material, and in the retracted state, the diameter of the inscribed circle formed by the three groups of abutment rollers 9 is equal to the lower limit of the grinding wheel error value, so that the grinding wheel with a diameter smaller than the standard grinding wheel will not move upward with the lifting part when the lifting part moves upward. For example, when the diameter deviation of the standard grinding wheel is a±b, the diameter of the inscribed circle formed by the three groups of abutment rollers 9 in the retracted state should be ab. At this time, when the diameter of the grinding wheel to be detected is smaller than ab, it will separate from the abutment rollers 9 when the lifting part rises. Although the grinding wheel to be detected with a diameter greater than a+b will be lifted up by the abutment rollers 9, the pressure value received by the pressure sensor 8 will also exceed the preset value, thereby also realizing the detection of grinding wheels with a diameter greater than the standard grinding wheel diameter.

[0057] When the three sets of abutment rollers 9 clamp the grinding wheel of standard diameter and the grinding wheel with a diameter larger than the standard diameter, the motor 7 connected to the abutment rollers 9 will also rotate. At this time, the abutment rollers 9 can drive the grinding wheel to rotate. During the rotation process, if the grinding wheel is out of round, it can be further separated from the abutment rollers 9 during rotation, thereby realizing the detection of the out-of-roundness of the grinding wheel.

[0058] It should be noted that, in order to judge whether the diameter of the grinding wheel is larger than the standard diameter, the pressures received by the three groups of pressure sensors 8 should be used for judgment. That is, only when the pressures received by the three groups of pressure sensors 8 are all greater than the preset values ​​can it be judged that the diameter of the grinding wheel is larger than the standard diameter. This is of great significance in preventing the length of the grinding wheel in a certain radial direction from increasing due to the out-of-roundness of the grinding wheel, thereby improving the detection accuracy and avoiding some grinding wheels with diameters smaller than the standard diameter from being mistakenly judged as those with diameters larger than the standard diameter, thereby affecting subsequent secondary processing.

[0059] Furthermore, for grinding wheels with a diameter larger than the standard diameter, their radius can be reduced through subsequent secondary processing.

[0060] Please refer again Figures 4 and 5 、 Figure 7 The expansion structure is installed on the lifting member and connected to the sliding member 10. A recessed groove is formed on the expansion structure, and the expansion structure can drive the driving structure to clamp the grinding wheel. The expansion structure includes a lifting shaft 14 that passes through the mounting frame 5 and is slidably fitted with the connecting rod 4. The lifting shaft 14 passes through the connecting rod 4 and is connected to a connecting ring 12. A pulling rod 11 is rotatably installed on the connecting ring 12. The end of the pulling rod 11 away from the connecting ring 12 is rotatably connected to the sliding member 10.

[0061] The recessed groove includes two sets of inclined surfaces 1401 provided on the lifting shaft 14 , and an outer protrusion 1402 is formed between the two sets of inclined surfaces 1401 ;

[0062] The energy storage structure is provided on the mounting frame 5. The energy storage structure cooperates with the recessed groove to enable the driving structure to maintain a clamping and releasing state of the grinding wheel. The energy storage structure includes a hysteresis sleeve 18 fixedly mounted on the mounting frame 5. A telescopic shaft 16 is slidably mounted in the hysteresis sleeve 18. An abutment wheel 15 capable of rolling in the recessed groove is rotatably mounted on one end of the telescopic shaft 16.

[0063] The telescopic shaft 16 is further provided with a limit ring 1601 , and a cylindrical spring 17 sleeved on the telescopic shaft 16 connects the limit ring 1601 and the inner wall of the hysteresis sleeve 18 ;

[0064] Two groups of the abutting members 21 are provided and installed on the frame structure 1 . The two groups of the abutting members 21 cooperate with the triggering portion 13 provided on the connecting ring 12 to drive the expansion and contraction structure to operate.

[0065] For ease of understanding, we assume that the connecting frame 3 is at the highest point of its travel as the initial state as follows:

[0066] At this time, the trigger portion 13 cooperates with the upper abutment 21 to make the abutment wheel 15 be at the end of the upper inclined surface 1401 away from the outer protrusion 1402. At this time, the cylindrical spring 17 is in a compressed state, so that the abutment wheel 15 has a tendency to continue to move toward the lifting shaft 14. At this time, the sliding member 10 abuts against the end of the first slide groove 6 away from the connecting rod 4, so that the lifting shaft 14 is in a stable state in this state, thereby improving the stability of the multiple sets of abutment rollers 9 in the expanded state.

[0067] Subsequently, the first electric telescopic rod 2 will drive the connecting frame 3 to move downward. During this process, the lifting shaft 14, the abutment roller 9 and the abutment wheel 15 will all move downward. When the lower end of the abutment roller 9 passes over the plane where the grinding wheel to be detected is located, the trigger part 13 will abut against the lower abutment member 21. At this time, the trigger part 13 drives the lifting shaft 14 to move upward through the connecting ring 12, and enables the abutment wheel 15 to move along the upper inclined surface 1401 toward the outer protrusion 1402, and further compresses the cylindrical spring 17 until the abutment wheel 15 moves. After passing the outer protrusion 1402, the cylindrical spring 17 can actively drive the abutment wheel 15 to move along the lower inclined surface 1401 by releasing elastic potential energy. At this time, the lifting shaft 14 and the connecting ring 12 will move upward relative to the mounting frame 5, and under the pull of the pulling rod 11, multiple groups of sliding members 10 will move toward the lifting shaft 14 until the sliding member 10 abuts against the end of the first slide groove 6 toward the lifting shaft 14. At this time, the abutment roller 9 completes the switch from the expanded state to the retracted state, so that the size specifications of the grinding wheel can be detected.

[0068] Among them, since the abutting roller 9 is made of rubber material, a certain buffering force can be generated when the abutting roller 9 abuts against the edge of the grinding wheel, thereby preventing the impact force of the abutting roller 9 from damaging the grinding wheel mechanism.

[0069] Furthermore, based on the three-point circle determination principle, when the three sets of abutment rollers 9 move toward each other, they also have the effect of positioning the grinding wheel, so that when the grinding wheel to be tested is placed in the initial state, it can be placed in a certain area without the need to accurately determine the position of the grinding wheel.

[0070] Through the above-mentioned arrangement, the three groups of abutment rollers 9 have the ability to switch between expansion and contraction states by being pulled, and when switching from the expansion state to the contraction state, the inscribed circle formed by the three groups of abutment rollers 9 is the same as the diameter of the grinding wheel of standard diameter, so that the three groups of abutment rollers 9 in the contraction state can remove the grinding wheel with a diameter lower than the standard diameter, and when the motor 7 is working, the three groups of abutment rollers 9 can also be used to drive the grinding wheel to rotate, thereby detecting the out-of-roundness of the grinding wheel, thereby improving the detection accuracy and diversity.

[0071] See also Figures 1 to 8 As an embodiment of the present invention, a grinding wheel size detection machine is also proposed, including the three-point grasping detection structure, and also including: a first supporting plate 19 and a second supporting plate 22, a pulling assembly, a transmission assembly and a second electric telescopic rod 25.

[0072] The first supporting plate 19 and the second supporting plate 22 are arranged on the frame structure 1 and are used to support the grinding wheel. The first supporting plate 19 is provided with a push rod 1902 for supporting the grinding wheel to be tested, so that when the grinding wheel is placed on the push rod 1902, the grinding wheel can be separated from the upper surface of the first supporting plate 19, thereby facilitating the abutment roller 9 to clamp the grinding wheel. In the initial state, the first supporting plate 19 is in a horizontal state.

[0073] The pulling assembly connects the first supporting plate 19 and the connecting frame 3. The pulling assembly can deflect the first supporting plate 19 after the connecting frame 3 rises to a predetermined position. The pulling assembly includes a pulling rod 24 provided on the frame structure 1. The two ends of the pulling rod 24 are respectively provided with a second sliding groove 2401 and an interlocking groove 2402.

[0074] The pulling assembly also includes a sliding connection portion 301 arranged at the end of the connecting frame 3 and an interlocking shaft 1901 rotatably mounted on the first supporting plate 19. The sliding connection portion 301 can slide in the second sliding groove 2401, and the interlocking shaft 1901 can roll in the interlocking groove 2402.

[0075] When the grinding wheel is placed on the push rod 1902 and the abutting roller 9 is switched to the retracted state, the sliding connection part 301 is at the lower end of the second slide groove 2401. At this time, when the abutting roller 9 moves upward with the mounting frame 5, the grinding wheel with a diameter smaller than the standard diameter will not move upward with the abutting roller 9 and will remain on the push rod 1902, so that the grinding wheel with a diameter smaller than the standard diameter will be removed. When the grinding wheel with a diameter that meets the standard diameter or a diameter larger than the standard diameter is driven by the abutting roller 9 to move upward for a certain displacement, the motor 7 will work to drive the grinding wheel Rotate, at this time the grinding wheel in the out-of-round state will separate from the abutment roller 9 again and fall back onto the push rod 1902, that is, the grinding wheel smaller than the standard diameter will remain on the push rod 1902 at this time, and then when the abutment roller 9 continues to move upward, when the sliding connection part 301 abuts against the upper end of the second slide groove 2401, the connecting frame 3 will drive the traction rod 24 to move upward, and at this time the first support plate 19 will be deflected, thereby moving the grinding wheel smaller than the standard diameter out of the first support plate 19, thereby improving the integrated action of detection and unloading, and improving the integration of the device.

[0076] See also Figures 6 to 8 The transmission assembly connects the first supporting plate 19 and the second supporting plate 22, and the transmission assembly can drive the second supporting plate 22 to move directly below the connecting frame 3 when the first supporting plate 19 deflects;

[0077] A bracket 20 is fixedly mounted on the frame structure 1, and a transverse groove 2001 is provided on the bracket 20. A sheave 23 rotatably mounted on the end of the second supporting plate 22 can roll in the transverse groove 2001.

[0078] The transmission assembly includes a rack plate 27 fixedly connected to the second supporting plate 22, an arc-shaped toothed plate 30 fixedly connected to the first supporting plate 19, and a coaxial wheel set rotatably mounted on the bracket 20, the coaxial wheel set meshing with the rack plate 27 and the arc-shaped toothed plate 30;

[0079] The coaxial wheel set includes a first gear 28 and a second gear 29 rotatably mounted on the bracket 20 and coaxially arranged. The first gear 28 is engaged with the rack plate 27 , and the second gear 29 is engaged with the arc-shaped gear plate 30 .

[0080] When the abutting roller 9 rises to the level of the second supporting plate 22, the sliding connection part 301 abuts against the upper end of the second sliding groove 2401, at this time, the first supporting plate 19 will be deflected, and the arc-shaped toothed plate 30 connected with the first supporting plate 19 will make a circular motion, and drive the first gear 28 to rotate through meshing with the second gear 29, and the first gear 28 is in meshing state with the rack plate 27, so that the rack plate 27 can drive the second supporting plate 22 to move along the length direction of the transverse groove 2001, until the connecting frame 3 rises to the predetermined height, the second supporting plate 22 moves to the position directly below the connecting frame 3, at this time, the trigger part 13 just cooperates with the upper abutting part 21, so that the abutting roller 9 is switched from the folding state to the expanding state, and the abrasive disc is released, so that the abrasive disc can fall onto the second supporting plate 22, at this time, the abrasive disc on the second supporting plate 22 is a standard diameter abrasive disc and an abrasive disc larger than the standard diameter.

[0081] Through the above setting, the mechanical linkage of the first supporting plate 19 and the second supporting plate 22 is realized, so as to unload the abrasive disc of corresponding diameter.

[0082] It should be noted that the end of the first supporting plate 19 away from the center of rotation is provided with a counterweight (not shown in the figure), so that when the abutting roller 9 moves downward, the above-mentioned action can be performed in reverse, preventing interference between the abutting roller 9 and the second supporting plate 22 during downward movement.

[0083] The second electric telescopic rod 25 is arranged on the frame structure 1, the second electric telescopic rod 25 is electrically connected with the pressure sensor 8, and the action end of the second electric telescopic rod 25 is connected with an arc-shaped part 26, when the pressure value borne by the pressure sensor 8 exceeds the preset value, the second electric telescopic rod 25 can drive the arc-shaped part 26 to move towards the second supporting plate 22.

[0084] When the pressures borne by the three groups of pressure sensors 8 are all greater than the preset value, the pressure sensor 8 can control the second electric telescopic rod 25 to act, so that the arc-shaped part 26 can move towards the second supporting plate 22, at this time, when the second supporting plate 22 completes the supporting and resetting of the standard diameter abrasive disc and the abrasive disc larger than the standard diameter, the arc-shaped part 26 can stop the abrasive disc larger than the standard diameter, so that the standard diameter abrasive disc and the abrasive disc larger than the standard diameter can be located on the two sides of the second supporting plate 22 respectively, thereby facilitating the separation of the abrasive disc larger than the standard diameter.

[0085] Through the above-mentioned arrangement, when the abutment roller 9 moves upward, the first supporting plate 19 can unload the grinding wheel with a diameter smaller than the standard diameter, and the second supporting plate 22 can receive the grinding wheel with a standard diameter and the grinding wheel with a diameter larger than the standard diameter. In the process of resetting the second supporting plate 22, the pressure sensor 8 can control the position of the arc-shaped member 26 through the second electric telescopic rod 25, so that in the process of resetting the second supporting plate 22, the grinding wheel with a standard diameter and the grinding wheel with a diameter larger than the standard diameter can be respectively located on both sides of the second supporting plate 22, thereby facilitating the separation of the grinding wheel with a diameter larger than the standard diameter.

[0086] As another embodiment of the present invention, a method for detecting a grinding wheel using the grinding wheel size detection machine is also proposed, comprising the following steps:

[0087] Step 1: Place the grinding wheel to be tested on the first supporting plate 19;

[0088] Step 2: Control the lifting member to move downward, and when the abutment member 21 abuts the trigger portion 13, the energy storage structure cooperates with the recessed groove, causing the expansion structure to drive the multiple drive structures to move closer to each other, thereby clamping the grinding wheel. When the diameter of the grinding wheel to be tested is smaller than a preset value, the drive structure will not be able to clamp it;

[0089] Step 3: Multiple sets of drive structures cooperate to clamp the grinding wheel to be tested until it is separated from the first support plate 19, and then the drive structure drives the grinding wheel to be tested to rotate. At this time, when the grinding wheel with a predetermined diameter is out of round, it can be separated from the drive structure during the rotation. The grinding wheel with a diameter greater than the predetermined diameter will cause the pressure value on the pressure sensor 8 to be greater than the preset value;

[0090] Step 4: The second electric telescopic rod 25 drives the arc-shaped member 26 to move toward the second supporting plate 22 under the control of the pressure sensor 8;

[0091] Step 5: The lifting member moves upward, and after it rises to a predetermined height, the first supporting plate 19 is deflected by the pulling assembly, and the second supporting plate 22 is able to move to the bottom of the connecting frame 3. Then, the triggering portion 13 abuts against another abutting member 21, causing the multiple drive structures to release the grinding wheel to be tested.

[0092] Step 6: The lifting member moves downward to reset the first supporting plate 19 and the second supporting plate 22. At this time, the arc-shaped member 26 can push away the grinding wheel on the second supporting plate 22 that is larger than the predetermined diameter and create a position difference with the grinding wheel that meets the production standard;

[0093] Step 7: Collect grinding wheels with diameters smaller than a preset value, larger than a preset value, and meeting production standards.

[0094] 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 invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0095] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one 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 each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. Three-point grab detection structure, characterized by: include: A frame structure (1), wherein the frame structure (1) is provided with a lifting member capable of moving in a vertical direction; Sliding members (10) are provided in multiple groups and are equidistantly mounted on the lifting member in a circumferential manner. A driving structure capable of driving the grinding wheel to rotate is mounted on the sliding members (10); an expansion and retraction structure, mounted on the lifting member and connected to the sliding member (10), wherein a recessed groove is formed on the expansion and retraction structure, and the expansion and retraction structure can drive the driving structure to clamp the grinding wheel; An energy storage structure is provided on the lifting member, and the energy storage structure cooperates with the recessed groove to enable the driving structure to maintain a clamping and releasing state of the grinding wheel; Two groups of abutment members (21) are provided and mounted on the frame structure (1); the two groups of abutment members (21) cooperate with a triggering portion (13) provided on the expansion and retraction structure to drive the expansion and retraction structure to move; A first electric telescopic rod (2) is installed on the frame structure (1); a connecting frame (3) is connected to the action end of the first electric telescopic rod (2); a plurality of connecting rods (4) are equidistantly arranged on the connecting frame (3) along its length direction; an end of the connecting rod (4) away from the connecting frame (3) is connected to a mounting frame (5); the connecting rod (4) and the mounting frame (5) form the lifting member; The mounting frame (5) is provided with a plurality of first sliding grooves (6), and the sliding member (10) is slidably connected to the first sliding grooves (6); The driving structure comprises a motor (7) and a pressure sensor (8) integrated on the sliding member (10); a rotating shaft of the motor (7) passes through the sliding member (10) and is connected to an abutting roller (9); The interior of the connecting rod (4) is a hollow structure, and the expansion structure includes a lifting shaft (14) that passes through the mounting frame (5) and is slidably fitted with the connecting rod (4), the lifting shaft (14) passes through the connecting rod (4) and is connected to a connecting ring (12), the connecting ring (12) is fixedly connected to the trigger part (13), and a pulling rod (11) is rotatably mounted on the connecting ring (12), and the end of the pulling rod (11) away from the connecting ring (12) is rotatably connected to the sliding member (10); The recessed groove comprises two groups of inclined surfaces (1401) arranged on the lifting shaft (14), and an outer protrusion (1402) is formed between the two groups of inclined surfaces (1401); The energy storage structure comprises a hysteresis sleeve (18) fixedly mounted on the mounting frame (5), a telescopic shaft (16) being slidably mounted in the hysteresis sleeve (18), and an abutment wheel (15) capable of rolling in the recessed groove being rotatably mounted on one end of the telescopic shaft (16); A limit ring (1601) is also provided on the telescopic shaft (16), and a cylindrical spring (17) sleeved on the telescopic shaft (16) connects the limit ring (1601) and the inner wall of the hysteresis sleeve (18).

2. Grinding wheel size detection machine, characterized in that, The three-point grasping detection structure according to claim 1 further comprises: A first supporting plate (19) and a second supporting plate (22), wherein the first supporting plate (19) and the second supporting plate (22) are arranged on the frame structure (1) and are used to support the grinding wheel; a pulling assembly connected to the first supporting plate (19) and the connecting frame (3), wherein the pulling assembly is capable of deflecting the first supporting plate (19) after the connecting frame (3) rises to a predetermined position; a transmission assembly connecting the first supporting plate (19) and the second supporting plate (22), wherein the transmission assembly is capable of driving the second supporting plate (22) to move toward the bottom of the connecting frame (3) when the first supporting plate (19) deflects; A second electric telescopic rod (25) is arranged on the frame structure (1), the second electric telescopic rod (25) is electrically connected to the pressure sensor (8), and an arc-shaped member (26) is connected to the action end of the second electric telescopic rod (25), and when the pressure value applied to the pressure sensor (8) exceeds a preset value, the second electric telescopic rod (25) can drive the arc-shaped member (26) to move toward the second supporting plate (22).

3. The grinding wheel size detection machine according to claim 2, characterized in that: The pulling assembly comprises a traction rod (24) arranged on the frame structure (1), and two ends of the traction rod (24) are respectively provided with a second sliding groove (2401) and an engaging groove (2402); The pulling assembly also includes a sliding connection portion (301) arranged at the end of the connecting frame (3) and an interlocking shaft (1901) rotatably mounted on the first supporting plate (19), the sliding connection portion (301) can slide in the second sliding groove (2401), and the interlocking shaft (1901) can roll in the interlocking groove (2402).

4. The grinding wheel size detection machine according to claim 2, characterized in that: A bracket (20) is fixedly mounted on the frame structure (1), and a transverse groove (2001) is provided on the bracket (20), and a groove wheel (23) rotatably mounted on the end of the second supporting plate (22) is capable of rolling in the transverse groove (2001); The transmission assembly comprises a rack plate (27) fixedly connected to the second supporting plate (22), an arc-shaped tooth plate (30) fixedly connected to the first supporting plate (19), and a coaxial wheel set rotatably mounted on the bracket (20), wherein the coaxial wheel set is engaged with the rack plate (27) and the arc-shaped tooth plate (30); The coaxial wheel set comprises a first gear (28) and a second gear (29) rotatably mounted on the bracket (20) and coaxially arranged, wherein the first gear (28) is engaged with the rack plate (27), and the second gear (29) is engaged with the arc-shaped gear plate (30).

5. A method for detecting a grinding wheel using the grinding wheel size detector according to claim 2, characterized in that: The following steps are involved: Step 1: placing the grinding wheel to be tested on the first supporting plate (19); Step 2: Control the lifting member to move downward, and when the abutting member (21) abuts the triggering portion (13), the energy storage structure cooperates with the recessed groove, so that the expansion structure drives the multiple drive structures to move closer to each other, thereby clamping the grinding wheel. When the diameter of the grinding wheel to be tested is smaller than a preset value, the drive structure will not be able to clamp it; Step 3: multiple sets of driving structures cooperate to clamp the grinding wheel to be detected until it is separated from the first supporting plate (19), and then the driving structure drives the grinding wheel to be detected to rotate. At this time, when the grinding wheel with a predetermined diameter is out of round, it can be separated from the driving structure during the rotation process, and the grinding wheel with a diameter greater than the predetermined diameter will cause the pressure value of the pressure sensor (8) to be greater than the preset value; Step 4: The second electric telescopic rod (25) drives the arc-shaped member (26) to move toward the second supporting plate (22) under the control of the pressure sensor (8); Step 5: The lifting member moves upward, and after the lifting member rises to a predetermined height, under the action of the pulling assembly, the first supporting plate (19) is deflected, and at the same time, the second supporting plate (22) is able to move to the bottom of the connecting frame (3), and then the triggering part (13) abuts against another abutting member (21), so that the multiple drive structures release the grinding wheel to be detected; Step 6: The lifting member moves downward to reset the first supporting plate (19) and the second supporting plate (22). At this time, the arc member (26) can push away the grinding wheel on the second supporting plate (22) that is larger than the predetermined diameter and create a position difference with the grinding wheel that meets the production standard; Step 7: Collect grinding wheels with diameters smaller than a preset value, larger than a preset value, and meeting production standards.

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