Safety performance testing device for resin diamond soft abrasive disc

Abstract

The utility model discloses a safety performance testing device for a resin diamond soft abrasive disc. The safety performance testing device comprises a bottom plate and a portal frame, the left side of the upper surface of the bottom plate is slidably connected with a movable support, a pressure sensor is arranged in the middle of the upper surface of the movable support, a limiting seat is arranged at the top end of the pressure sensor, a testing plate is placed in a groove formed in the upper surface of the limiting seat, and the portal frame is arranged in the middle of the upper surface of the bottom plate; an electric push rod is arranged in the middle of a horizontal plate body of the portal frame, a torsion sensor is arranged at the lower end of the electric push rod, a mounting frame is arranged at the lower end of the torsion sensor, a first motor is arranged on the inner bottom face of the mounting frame, and an output shaft of the first motor penetrates through a through hole formed in the middle of a bottom plate of the mounting frame and extends to the position below the mounting frame. According to the safety performance testing device for the resin diamond soft abrasive disc, the safety performance limit of the soft abrasive disc can be visually known, operation is easy and convenient, measured data are accurate, and the protection effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of abrasive tool safety performance testing, in particular to a resin diamond soft abrasive disc safety performance testing device. Background Art

[0002] Resin diamond soft grinding discs are mainly used for grinding and polishing of stone, glass, floor tiles and other building materials. They are composed of a working surface and a mounting surface. The working surface is made of diamond, resin and other fillers, and the mounting surface is made of the ring surface of nylon Velcro. The working surface and the mounting surface are bonded together with an adhesive. When in use, the ring of the mounting surface fits the Velcro of the grinder head, and the rotation of the head drives the resin diamond soft grinding disc to grind. The high-speed rotation working mode requires that safety performance must be guaranteed.

[0003] In the prior art, a patent with authorization announcement number CN204988908 U discloses a safety performance test device for a resin diamond soft abrasive disc, comprising a sample fixing unit and a torque loading unit, wherein the sample fixing unit comprises a frame, a guide rail is arranged on the frame, and a movable crossbeam and a bottom plate which can move along the guide rail are arranged from bottom to top, a load sensor is fixed on the movable crossbeam, the movable crossbeam and the bottom plate are movably connected, a guide rail locking device is arranged on the bottom plate screws, and a sample plate is connected to the bottom plate; the torque loading part comprises a movable disk and a torque sensor fixedly connected to the movable disk, and the other end of the torque sensor is connected to a torque generating mechanism, and during the test, only the minimum torque value when the sample is damaged can be tested, and the test data is not perfect, and it is not convenient to understand the corresponding torque detection data under different pressures in the whole test process, and there is no protective mechanism, and the splashing of fragments generated during the test process can easily injure external personnel and equipment, and there is a safety hazard. Therefore, we propose a safety performance test device for a resin diamond soft abrasive disc. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the existing defects and provide a resin diamond soft grinding disc safety performance testing device, which can intuitively understand the safety performance limit of the soft grinding disc, is simple and convenient to operate, measures data accurately, has good protection effect, and can effectively solve the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a safety performance testing device for a resin diamond soft abrasive disc, comprising a base plate and a gantry;

[0006] The bottom plate: a movable support is slidably connected to the left side of its upper surface, a pressure sensor is provided in the middle of the upper surface of the movable support, a limit seat is provided at the top of the pressure sensor, a test plate is placed inside the groove arranged on the upper surface of the limit seat, the gantry is arranged in the middle of the upper surface of the bottom plate, an electric push rod is provided in the middle of the horizontal plate body of the gantry, a torque sensor is provided at the lower end of the electric push rod, a mounting frame is provided at the lower end of the torque sensor, a motor 1 is provided on the inner bottom surface of the mounting frame, an output shaft of the motor 1 passes through a through hole arranged in the middle of the bottom plate of the mounting frame and extends to the bottom of the mounting frame, a soft grinding sheet is provided at the lower end of the output shaft of the motor 1, and the soft grinding sheet is arranged in cooperation with the test plate, a vertical plate is symmetrically provided on the upper surface of the bottom plate, a screw is rotatably connected between the two vertical plates, the middle part of the screw is connected to the internal thread of the movable support, a motor 2 is provided on the right side surface of the screw on the right side, and the output shaft of the motor 2 is fixedly connected to the right end of the screw;

[0007] Among them: it also includes a single-chip microcomputer, the input end of the single-chip microcomputer is electrically connected to an external power supply, the output end of the single-chip microcomputer is electrically connected to the input end of motor 1, and the output ends of the pressure sensor and the torque sensor are both electrically connected to the input end of the single-chip microcomputer. The safety performance limit of the soft grinding plate can be intuitively understood through the pressure and torque curves of the soft grinding plate under different force areas. The operation is simple and convenient, the measurement data is accurate, and the protection effect is good.

[0008] Furthermore, it also includes a distance measuring sensor, which is arranged on the upper surface of the vertical plate on the right side. The distance measuring sensor and the limit seat are arranged in horizontal correspondence. The output end of the distance measuring sensor is electrically connected to the input end of the single-chip microcomputer to measure the lateral position of the test board, which is convenient for data recording.

[0009] Furthermore, an oscilloscope is provided at the right end of the upper surface of the base plate, and the input end of the oscilloscope is electrically connected to the output end of the single-chip microcomputer, and the output signals of the pressure sensor and the torque sensor are displayed in a waveform state, so that the test personnel can intuitively understand the force effect of the soft grinding plate.

[0010] Furthermore, it also includes a protective cover, which is placed on the left side of the upper surface of the base plate. The movable support and the gantry are both located inside the protective cover. Positioning pins are symmetrically inserted between the lower end of the protective cover and the left side of the base plate to prevent broken fragments of the soft grinding plate from splashing and improve the protection performance.

[0011] Furthermore, the protective cover is a tempered glass protective cover, which is convenient for observing the test status of the soft grinding disc.

[0012] Furthermore, a dovetail groove is symmetrically provided on the left side of the upper surface of the base plate, and sliding blocks symmetrically provided on the lower surface of the movable support are respectively slidably connected to the inner walls of the vertically corresponding dovetail grooves, thereby improving the stability of the movable support during movement.

[0013] Furthermore, sliding columns are symmetrically arranged on the lower surface of the limit seat, and the sliding columns are slidably connected to the inner walls of the sliding holes correspondingly arranged at the four corners of the movable support, so that the force of the limit seat is balanced.

[0014] Compared with the prior art, the beneficial effects of the utility model are: the resin diamond soft grinding disc safety performance testing device has the following advantages:

[0015] The motor 1 is started by the single chip microcomputer, and the output shaft of the motor 1 drives the soft grinding disc to rotate at high speed. At this time, the electric push rod is started by the single chip microcomputer, and the push rod of the electric push rod pushes the soft grinding disc to move downward during the rotation. The lower surface of the soft grinding disc contacts the upper surface of the test plate, and the test plate applies downward pressure to the pressure sensor through the limit seat. The pressure sensor sends the detected pressure data to the single chip microcomputer. At the same time, the torque sensor detects the reverse torque exerted on the soft grinding disc through the installation frame and the motor pair in turn, thereby measuring the torque value exerted on the soft grinding disc under different pressures. The motor 2 is started, and the output of the motor 2 The shaft drives the screw to rotate, and the screw pushes the movable support to slide to the left, thereby adjusting the contact area between the soft abrasive disc and the test plate. The electric push rod continuously adjusts the pressure of the soft abrasive disc on the test plate, thereby testing the force limit of the soft abrasive disc under different force surfaces. The protective cover can prevent the soft abrasive disc from breaking and flying out when the force is too large, avoiding damage to personnel and equipment. The resin diamond soft abrasive disc safety performance test device can intuitively understand the safety performance limit of the soft abrasive disc through the pressure and torque curves of the soft abrasive disc under different force areas. The operation is simple and convenient, the measurement data is accurate, and the protection effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model.

[0017] In the figure: 1 bottom plate, 101 dovetail groove, 2 movable support, 3 pressure sensor, 4 limit seat, 5 test plate, 6 gantry, 7 electric push rod, 8 torque sensor, 9 mounting frame, 10 motor 1, 11 soft grinding disc, 12 vertical plate, 13 screw, 14 motor 2, 15 single chip microcomputer, 16 oscilloscope, 17 protective cover, 18 positioning pin, 19 distance sensor, 20 sliding column. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1 , This embodiment provides a technical solution: a safety performance testing device for a resin diamond soft abrasive pad, comprising a base plate 1 and a gantry 6;

[0020] Bottom plate 1: The left side of its upper surface is slidably connected with a movable support 2. A dovetail groove 101 is symmetrically arranged on the left side of the upper surface of the bottom plate 1. The sliders symmetrically arranged on the lower surface of the movable support 2 are respectively slidably connected with the inner walls of the vertically corresponding dovetail grooves 101. The dovetail grooves 101 improve the stability of the movable support 2 when it moves. A pressure sensor 3 is arranged in the middle of the upper surface of the movable support 2. A limit seat 4 is arranged at the top of the pressure sensor 3. The lower surface of the limit seat 4 is symmetrically arranged with sliding columns 20. The sliding columns 20 are respectively slidably connected with the inner walls of the sliding holes arranged at the four corners of the movable support 2. A test plate 5 is placed inside the groove arranged on the upper surface of the limit seat 4, a gantry 6 is arranged in the middle of the upper surface of the base plate 1, an electric push rod 7 is arranged in the middle of the horizontal plate body of the gantry 6, a torque sensor 8 is arranged at the lower end of the electric push rod 7, a mounting frame 9 is arranged at the lower end of the torque sensor 8, a motor 10 is arranged on the inner bottom surface of the mounting frame 9, an output shaft of the motor 10 passes through a through hole arranged in the middle of the base plate of the mounting frame 9 and extends to the bottom of the mounting frame 9, a soft grinding sheet 11 is arranged at the lower end of the output shaft of the motor 10, the soft grinding sheet 11 is arranged in cooperation with the test plate 5, the lower surface of the soft grinding sheet 11 contacts with the upper surface of the test plate 5, the test plate 5 applies downward pressure to the pressure sensor 3 through the limit seat 4, the pressure sensor 3 detects the pressure on the test plate 5, the soft grinding sheet 11 is subjected to the reverse friction force of the test plate 5 during rotation, and since the mounting frame 9 is fixedly connected to the motor 10, the torque sensor 8 The reverse torque exerted on the soft abrasive sheet 11 is detected in turn through the mounting frame 9 and the motor 10. Vertical plates 12 are symmetrically arranged on the upper surface of the base plate 1. A screw 13 is rotatably connected between the two vertical plates 12. The middle part of the screw 13 is connected to the internal thread of the movable support 2. A motor 2 14 is arranged on the right side of the screw 13 on the right side. The output shaft of the motor 2 14 is fixedly connected to the right end of the screw 13. The motor 2 14 is started, and the output shaft of the motor 2 14 drives the screw 13 to rotate. The screw 13 pushes the movable support 2 to slide to the left, thereby adjusting the contact area between the soft abrasive sheet 11 and the test plate 5. When the force-bearing area of ​​the soft abrasive sheet 11 is reduced, the soft abrasive sheet 11 will be subjected to the upward shear force of the test plate 5. The pressure of the soft abrasive sheet 11 on the test plate 5 is continuously adjusted by the electric push rod 7, thereby testing the force limit of the soft abrasive sheet 11 under different force surfaces. An oscilloscope 16 is arranged on the right end of the upper surface of the base plate 1.

[0021] Among them: it also includes a single-chip microcomputer 15, the input end of the single-chip microcomputer 15 is electrically connected to the external power supply, the output end of the single-chip microcomputer 15 is electrically connected to the input end of the motor 10, the output ends of the pressure sensor 3 and the torque sensor 8 are both electrically connected to the input end of the single-chip microcomputer 15, and the input end of the oscilloscope 16 is electrically connected to the output end of the single-chip microcomputer 15.

[0022] The device also includes a distance sensor 19 , which is disposed on the upper surface of the right vertical plate 12 . The distance sensor 19 and the limit seat 4 are disposed in a horizontal direction corresponding to each other. The output end of the distance sensor 19 is electrically connected to the input end of the single-chip microcomputer 15 .

[0023] Among them: it also includes a protective cover 17, which is placed on the left side of the upper surface of the base plate 1, the movable support 2 and the gantry 6 are both located inside the protective cover 17, and positioning pins 18 are symmetrically inserted between the lower end of the protective cover 17 and the left side of the base plate 1, and the protective cover 17 is a tempered glass protective cover.

[0024] The working principle of the safety performance testing device for a resin diamond soft abrasive disc provided by the utility model is as follows:

[0025] The soft grinding sheet 11 is fixedly mounted on the mounting plate at the lower end of the output shaft of the motor 10, and the motor 10 is started by the single chip microcomputer 15. The output shaft of the motor 10 drives the soft grinding sheet 11 to rotate at a high speed. At this time, the electric push rod 7 is started by the single chip microcomputer 15. The push rod of the electric push rod 7 pushes the soft grinding sheet 11 to move downward during the rotation. The lower surface of the soft grinding sheet 11 contacts the upper surface of the test plate 5. The test plate 5 applies downward pressure to the pressure sensor 3 through the limit seat 4. The pressure sensor 3 sends the detected pressure data to the single chip microcomputer 15. At the same time, the soft grinding sheet 11 is subjected to the reverse friction force of the test plate 5 during the rotation. Since the mounting frame 9 is fixedly connected to the motor 10, the torque sensor 8 detects the reverse torque exerted on the soft grinding sheet 11 through the mounting frame 9 and the motor 10 in turn. By comparing the measurement data of 8 and the pressure sensor 3 at the same time, the torque value of the soft abrasive sheet 11 under different pressures can be obtained, and the motor 2 14 is started. The output shaft of the motor 2 14 drives the screw 13 to rotate, and the screw 13 pushes the movable support 2 to slide to the left, thereby adjusting the contact area between the soft abrasive sheet 11 and the test plate 5. When the force area of ​​the soft abrasive sheet 11 is reduced, the soft abrasive sheet 11 will be subjected to the upward shear force of the test plate 5. The pressure of the soft abrasive sheet 11 on the test plate 5 is continuously adjusted by the electric push rod 7, so as to test the force limit of the soft abrasive sheet 11 under different force surfaces. The protective cover 17 can prevent the soft abrasive sheet 11 from breaking and flying out when the force is too large, so as to avoid damage to personnel and equipment. The protective cover 17 is a tempered glass protective cover, which is convenient for observing the position and state of the soft abrasive sheet 11.

[0026] The above are only embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A safety performance testing device for resin diamond soft abrasive pads, characterized in that: It comprises a base plate (1) and a gantry (6); The bottom plate (1) is slidably connected to a movable support (2) on the left side of its upper surface, a pressure sensor (3) is provided in the middle of the upper surface of the movable support (2), a limit seat (4) is provided at the top of the pressure sensor (3), a test plate (5) is placed inside a groove provided on the upper surface of the limit seat (4), the gantry (6) is provided in the middle of the upper surface of the bottom plate (1), an electric push rod (7) is provided in the middle of the horizontal plate body of the gantry (6), a torque sensor (8) is provided at the lower end of the electric push rod (7), a mounting frame (9) is provided at the lower end of the torque sensor (8), and a motor (1) is provided on the inner bottom surface of the mounting frame (9). 0), the output shaft of the motor 1 (10) passes through a through hole provided in the middle of the bottom plate of the installation frame (9) and extends to the bottom of the installation frame (9), a soft grinding sheet (11) is provided at the lower end of the output shaft of the motor 1 (10), and the soft grinding sheet (11) is arranged in cooperation with the test plate (5), the upper surface of the bottom plate (1) is symmetrically provided with vertical plates (12), a screw rod (13) is rotatably connected between the two vertical plates (12), the middle part of the screw rod (13) is connected with the internal thread of the movable support (2), the right side surface of the screw rod (13) on the right side is provided with a motor 2 (14), and the output shaft of the motor 2 (14) is fixedly connected with the right end of the screw rod (13); The invention further comprises a single chip microcomputer (15), wherein the input end of the single chip microcomputer (15) is electrically connected to an external power supply, the output end of the single chip microcomputer (15) is electrically connected to the input end of the motor 1 (10), and the output ends of the pressure sensor (3) and the torque sensor (8) are both electrically connected to the input end of the single chip microcomputer (15).

2. A safety performance testing device for a resin diamond soft abrasive pad according to claim 1, characterized in that: It also includes a distance sensor (19), which is arranged on the upper surface of the right vertical plate (12), the distance sensor (19) and the limit seat (4) are arranged in a horizontal direction corresponding to each other, and the output end of the distance sensor (19) is electrically connected to the input end of the single chip computer (15).

3. A safety performance testing device for a resin diamond soft abrasive pad according to claim 1, characterized in that: An oscilloscope (16) is provided at the right end of the upper surface of the base plate (1), and the input end of the oscilloscope (16) is electrically connected to the output end of the single-chip computer (15).

4. A safety performance testing device for a resin diamond soft abrasive pad according to any one of claims 1 to 3, characterized in that: The invention also comprises a protective cover (17), wherein the protective cover (17) is placed on the left side of the upper surface of the base plate (1), the movable support (2) and the gantry (6) are both located inside the protective cover (17), and positioning pins (18) are symmetrically inserted between the lower end of the protective cover (17) and the left side of the base plate (1).

5. A safety performance testing device for a resin diamond soft abrasive pad according to claim 4, characterized in that: The protective cover (17) is a tempered glass protective cover.

6. A safety performance testing device for a resin diamond soft abrasive pad according to claim 1, characterized in that: A dovetail groove (101) is symmetrically arranged on the left side of the upper surface of the bottom plate (1), and sliding blocks symmetrically arranged on the lower surface of the movable support (2) are respectively slidably connected to the inner walls of the vertically corresponding dovetail grooves (101).

7. A safety performance testing device for a resin diamond soft abrasive pad according to claim 1, characterized in that: The lower surface of the limit seat (4) is symmetrically provided with sliding columns (20), and the sliding columns (20) are slidably connected to the inner walls of the sliding holes correspondingly provided at the four corners of the movable support (2).

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