Measuring equipment for length and thickness of sample detected by testing machine

Abstract

The invention relates to the technical field of workpiece detection, in particular to length and thickness metering equipment for a test sample of a testing machine, which is convenient for simultaneously detecting the length, the height and the thickness of a workpiece and saves the detection time. Comprising an equipment box, a feeding opening and an industrial control box are arranged on the equipment box, a supporting plate is fixedly arranged in the equipment box, a clamp used for positioning a workpiece is arranged on the supporting plate, and a first infrared signal receiver, a first infrared signal transmitter, a second infrared signal transmitter and a second infrared signal receiver are slidably mounted on the supporting plate; and three groups of laser distance sensors are slidably mounted at the top of the equipment box and are used for detecting the thicknesses of three groups of stepped holes of the workpiece.

Description

Technical Field

[0001] This invention relates to the technical field of workpiece inspection, and in particular to a testing machine for measuring the length and thickness of samples. Background Technology

[0002] When measuring the dimensions of an equilateral triangular workpiece sample, the length, height, and thickness of the workpiece need to be measured manually. Since the workpiece has arcs at the apex and stepped holes at each apex, manual measurement requires the use of special measuring tools, making the inspection process quite cumbersome. Summary of the Invention

[0003] To solve the above-mentioned technical problems, the present invention provides a testing machine for measuring the length and thickness of workpieces, which facilitates simultaneous detection of the length, height and thickness of the workpiece and saves detection time.

[0004] The present invention discloses a testing machine for measuring the length and thickness of a sample, comprising an equipment box, wherein the equipment box is provided with a feeding port and an industrial control box, a support plate is fixed inside the equipment box, a fixture for positioning the workpiece is provided on the support plate, and a first infrared signal receiver, a first infrared signal transmitter, a second infrared signal transmitter and a second infrared signal receiver are slidably mounted on the support plate. Three sets of laser distance sensors are slidably mounted on the top of the equipment box for measuring the thickness of three sets of stepped holes in the workpiece.

[0005] Preferably, the support plate has four sets of through slots, and four sets of lead screws are rotatably installed on the bottom of the support plate corresponding to the four sets of through slots. Each set of lead screws is screwed with a lead screw nut. The four sets of lead screw nuts are fixedly connected to the first infrared signal receiver, the first infrared signal transmitter, the second infrared signal transmitter, and the second infrared signal receiver by means of connecting blocks passing through the through slots respectively.

[0006] Preferably, a first motor is fixedly installed on the equipment box to drive one set of lead screws to rotate, and adjacent sets of lead screws are connected by bevel gear transmission, wherein the screw threads of the two opposing sets of lead screws have opposite directions of rotation.

[0007] Preferably, the support plate is provided with three sets of second radial grooves, and the clamp includes three sets of second sliders that are slidably installed in the three sets of second radial grooves, and a pressure block is fixedly installed on each set of second sliders.

[0008] Preferably, a first turntable is rotatably mounted on the support plate, and three sets of connecting rods are rotatably mounted on the first turntable. The three sets of connecting rods are respectively rotatably connected to three sets of second sliders. A motor base is fixedly mounted on the bottom of the support plate, and a second motor is fixedly mounted on the motor base for driving the first turntable to rotate along its own axis.

[0009] Preferably, the top of the equipment box is provided with three sets of first radial grooves, and a first slider is slidably installed inside each set of first radial grooves. The three sets of laser distance sensors are respectively fixedly installed on the three sets of first sliders.

[0010] Preferably, a second turntable is rotatably mounted on the top of the equipment box, and an inclined groove is provided on the second turntable. A guide post is fixedly provided on each group of the first sliders, and the three groups of guide posts are slidably installed in the three groups of inclined grooves respectively.

[0011] Preferably, a protective box is also fixedly installed on the equipment box. The protective box covers the outside of the second turntable. Teeth are provided on the outer wall of the second turntable. A third motor is fixedly installed on the protective box. A drive gear is fixedly sleeved on the output end of the third motor. The drive gear meshes with the second turntable.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: The workpiece is positioned and clamped by a fixture. Then, the first infrared signal receiver and the first infrared signal transmitter, the second infrared signal transmitter, and the second infrared signal receiver are started moving synchronously from the edge. Initially, the infrared signal emitted by the first infrared signal transmitter can be received by the first infrared signal receiver, and the infrared signal emitted by the second infrared signal transmitter can be received by the second infrared signal receiver. During the movement, taking the first infrared signal receiver and the first infrared signal transmitter as an example, when the infrared signal emitted by the first infrared signal transmitter is blocked by the workpiece and cannot be received by the first infrared signal receiver, timing begins. Timing stops when the infrared signal emitted by the first infrared signal transmitter is received by the first infrared signal receiver again. The duration obtained from the timing is used to calculate the time. The length of the workpiece can be obtained by multiplying the moving speed of the first infrared signal receiver and the first infrared signal transmitter. Similarly, the second infrared signal transmitter and the second infrared signal receiver can detect the height of the workpiece. The detected workpiece length and height are then sent to the industrial control box for display. At the same time, the distance between the three sets of laser distance sensors and the support plate is the calibration distance. The thickness of the workpiece can be obtained by subtracting the distance measured by the laser distance sensors from the workpiece surface from the calibration distance. The three sets of laser distance sensors move synchronously outward from the center of the workpiece along the three angle bisectors of the workpiece. The laser is used to traverse and measure the angle bisectors of the workpiece. The thickness of the workpiece and the machining depth at the stepped hole are sent to the industrial control box for display, which facilitates the simultaneous detection of the length, height and thickness of the workpiece and saves detection time. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is an enlarged schematic diagram showing the connection between the support plate and the first infrared signal receiver and other structures. Figure 3 This is an enlarged schematic diagram showing the connection between the first radial groove and structures such as the laser distance sensor; Figure 4 This is a schematic diagram of the bottom structure of the support plate; Figure 5 This is an enlarged schematic diagram showing the connection between the first turntable and the connecting rod and other structures. Figure 6 This is an enlarged schematic diagram of the structure of the first infrared signal transmitter; Figure 7 This is an enlarged schematic diagram of the structure of the first infrared signal receiver; Figure 8 This is an enlarged schematic diagram showing the meshing of the second turntable and the drive gear; Figure 9 This is an enlarged schematic diagram of the laser distance sensor structure; Figure 10 yes Figure 4 Enlarged structural diagram of section A in the middle; Figure 11 This is an enlarged schematic diagram of the workpiece structure; The attached diagram shows the following components: 1. Equipment box; 2. Industrial control box; 3. Support plate; 4. First infrared signal receiver; 5. First infrared signal transmitter; 6. Second infrared signal transmitter; 7. Second infrared signal receiver; 8. First radial groove; 9. First slider; 10. Laser distance sensor; 11. Feed port; 12. Slide rail; 13. Through groove; 14. Slider; 15. Lead screw; 16. Lead screw nut; 17. First motor; 18. Second radial groove; 19. Second slider; 20. Pressure block; 21. First turntable; 22. Connecting rod; 23. Motor base; 24. Second motor; 25. Guide post; 26. Second turntable; 27. Inclined groove; 28. Protective box; 29. ​​Third motor; 30. Drive gear; 31. Bevel gear; 32. Workpiece. Detailed Implementation

[0014] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0015] In the description of this invention, it should be noted that the orientations or positional relationships indicated by terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inner", and "outer" are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0016] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. This embodiment is written in a progressive manner.

[0017] like Figures 1 to 3 As shown, a testing machine for measuring the length and thickness of a sample according to the present invention includes: Equipment box 1, with a loading port 11 at the front end, and an industrial control box 2 on the side wall of equipment box 1. A support plate 3 is fixed inside equipment box 1, and a fixture for positioning workpiece 32 is provided on the support plate 3. A first infrared signal receiver 4, a first infrared signal transmitter 5, a second infrared signal transmitter 6, and a second infrared signal receiver 7 are slidably installed on the four sides of the support plate 3, respectively. The first infrared signal receiver 4 works in conjunction with the first infrared signal transmitter 5, and the second infrared signal transmitter 6 works in conjunction with the second infrared signal receiver 7. Three sets of laser distance sensors 10 are slidably installed on the top of equipment box 1 for thickness detection of three sets of stepped holes in workpiece 32. Specifically, in this embodiment, the specific structure of the workpiece 32 is shown in the feed port 11. The first infrared signal receiver 4, the first infrared signal transmitter 5, the second infrared signal transmitter 6, and the second infrared signal receiver 7 move synchronously. The three sets of laser distance sensors 10 move synchronously outward from directly above the center of the workpiece 32 along the three angle bisectors of the workpiece 32. During the movement, the thickness of the workpiece 32 and the thickness of each stepped hole are detected. The first infrared signal receiver 4, the first infrared signal transmitter 5, the second infrared signal transmitter 6, the second infrared signal receiver 7, and the three sets of laser distance sensors 10 are all connected to the industrial control box 2 by electrical signal communication. The sliding paths of the first infrared signal receiver 4 and the first infrared signal transmitter 5 are parallel, the sliding paths of the second infrared signal transmitter 6 and the second infrared signal receiver 7 are parallel, and the perpendicular distance between the center of the workpiece 32 and the sliding paths of the first infrared signal receiver 4, the first infrared signal transmitter 5, the second infrared signal transmitter 6, and the second infrared signal receiver 7 is equal. In this embodiment, the workpiece 32 is placed on the support plate 3 through the loading port 11, and the workpiece 32 is positioned and clamped by a fixture. Then, the first infrared signal receiver 4, the first infrared signal transmitter 5, the second infrared signal transmitter 6, and the second infrared signal receiver 7 are started to move synchronously from the edge. At the beginning of the movement, the infrared signal emitted by the first infrared signal transmitter 5 can be received by the first infrared signal receiver 4, and the infrared signal emitted by the second infrared signal transmitter 6 can be received by the second infrared signal receiver 7. During the movement, taking the first infrared signal receiver 4 and the first infrared signal transmitter 5 as an example, when the infrared signal emitted by the first infrared signal transmitter 5 is blocked by the workpiece 32 and cannot be received by the first infrared signal receiver 4, the timing starts and ends when the infrared signal emitted by the first infrared signal transmitter 5 is received by the first infrared signal receiver 4 again. The length of the workpiece 32 can be obtained by multiplying the time obtained by the timing by the moving speed of the first infrared signal receiver 4 and the first infrared signal transmitter 5. Similarly, the second infrared signal transmitter 6 and the second infrared signal receiver 7 can detect the height of the workpiece 32. The detected length and height of the workpiece 32 are then sent to the industrial control box 2 for display. Meanwhile, the distance between the three sets of laser distance sensors 10 and the support plate 3 is the calibration distance. The thickness of the workpiece 32 can be obtained by subtracting the distance measured by the laser distance sensor 10 from the calibration distance. The three sets of laser distance sensors 10 move outward synchronously from the center of the workpiece 32 along the three angle bisectors of the workpiece 32. The laser is used to traverse and measure the angle bisectors of the workpiece 32, and the thickness of the workpiece 32 and the processing depth at the stepped hole are sent to the industrial control box 2 for display.

[0018] Furthermore, such as Figure 2 , Figure 4 , Figure 6 and Figure 7 As shown, four sets of slide rails 12 are arranged in a circular array on the support plate 3. The first infrared signal receiver 4, the first infrared signal transmitter 5, the second infrared signal transmitter 6, and the second infrared signal receiver 7 are all slidably mounted on the four sets of slide rails 12 by means of sliders 14. At the same time, four sets of through slots 13 are provided on the support plate 3 corresponding to the four sets of slide rails 12. The four sets of through slots 13 are parallel to the four sets of slide rails 12. Four sets of lead screws 15 are rotatably mounted on the bottom of the support plate 3 corresponding to the four sets of slide rails 12. The four sets of slide rails 12 are parallel to the four sets of lead screws 15. Each set of lead screws 15 is screwed with a lead screw nut 16. The lead screw nut 16 is fixedly connected to the slider 14 by means of a connecting block passing through the through slot 13. Specifically, how are the four sets of lead screws 15 driven to rotate synchronously? Figure 4 and Figure 10As shown, a first motor 17 is fixedly installed on the equipment box 1 to drive one set of lead screws 15 to rotate along its own axis. The two adjacent sets of lead screws 15 are connected by bevel gears 31. The screw threads of the two opposing sets of lead screws 15 have opposite directions of rotation. In this embodiment, by starting the first motor 17, one set of lead screws 15 is driven to rotate. Under the meshing connection of three pairs of bevel gears 31, the other three sets of lead screws 15 are driven to rotate along their own axes. Since the screw threads of the two opposing sets of lead screws 15 have opposite directions of rotation, the first infrared signal receiver 4 and the first infrared signal transmitter 5 are driven to move synchronously in the same direction, and the second infrared signal transmitter 6 and the second infrared signal receiver 7 are driven to move synchronously in the same direction. This facilitates the control of the movement of the first infrared signal receiver 4, the first infrared signal transmitter 5, the second infrared signal transmitter 6, and the second infrared signal receiver 7. At the same time, the movement of the above four sets of transmissions is driven by a lead screw and nut pair, and the movement speed is precise and adjustable, which is beneficial to improving the detection accuracy.

[0019] like Figure 2 , Figure 4 and Figure 5 As shown, the support plate 3 has three sets of second radial grooves 18 arranged in a circular array. The three sets of second radial grooves 18 are respectively along the vertical direction of the workpiece 32. The fixture includes three sets of second sliders 19 that are slidably installed in the three sets of second radial grooves 18. Each set of second sliders 19 is fixedly installed with a pressure block 20. The pressure block 20 protrudes from the top of the support plate 3 and is lower than the thickness of the workpiece 32. A first turntable 21 is rotatably mounted on the support plate 3. The axis of the first turntable 21 coincides with the center of the workpiece 32. Three sets of connecting rods 22 are rotatably mounted on the edge of the first turntable 21. The three sets of connecting rods 22 are rotatably connected to three sets of second sliders 19 respectively. A motor base 23 is fixedly mounted on the bottom of the support plate 3. A second motor 24 is fixedly mounted on the motor base 23 for driving the first turntable 21 to rotate along its own axis. In this embodiment, by starting the second motor 24, the second motor 24 drives the first turntable 21 to rotate. Under the connection of the three sets of connecting rods 22, the three sets of second sliders 19 are driven to move synchronously inward or outward in the three sets of second radial grooves 18, placing the workpiece 32 on the support plate 3, so that the three sets of pressure blocks 20 press against the three sides of the workpiece 32, thereby positioning and fixing the workpiece 32.

[0020] Specifically, how are the three sets of laser distance sensors 10 driven to move synchronously? Figure 3 , Figure 8 and Figure 9As shown, the top of the equipment box 1 has three sets of first radial grooves 8 arranged in a circular array with the center of the workpiece 32 as the point. Each set of first radial grooves 8 has a first slider 9 slidably installed inside it. The three sets of laser distance sensors 10 are respectively fixedly installed on the three sets of first sliders 9. A second turntable 26 is rotatably mounted on the top of the equipment box 1. An inclined groove 27 is provided on the second turntable 26. The extension line of the inclined groove 27 does not coincide with the center of the second turntable 26. The distance from the inner end of the inclined groove 27 to the center is equal to the distance from the inner end of the first radial groove 8 to the center. The distance from the outer end of the inclined groove 27 to the center is equal to the distance from the outer end of the first radial groove 8 to the center. A guide post 25 is fixedly provided on each group of first sliders 9. The three groups of guide posts 25 are slidably installed in the three groups of inclined grooves 27 respectively. A protective box 28 is also fixedly installed on the equipment box 1. The protective box 28 covers the outside of the second turntable 26. The outer wall of the second turntable 26 is provided with teeth. A third motor 29 is fixedly installed on the protective box 28. The output end of the third motor 29 is fixedly fitted with a drive gear 30, which meshes with the second turntable 26. In this embodiment, by starting the third motor 29, the drive gear 30 drives the second turntable 26 to rotate. Under the combined action of the inclined groove 27 and the first radial groove 8, the three sets of first sliders 9 are driven to move outward synchronously along the first radial groove 8, which facilitates the control of the movement of the laser distance sensor 10.

[0021] The present invention provides a testing machine for measuring the length and thickness of samples, wherein during operation: First, the workpiece 32 is placed on the support plate 3 through the feeding port 11. The second motor 24 is started to drive the first turntable 21 to rotate. Under the connection of the three sets of connecting rods 22, the three sets of second sliders 19 are driven to move synchronously in the three sets of second radial grooves 18, so that the three sets of pressure blocks 20 are pressed on the three sides of the workpiece 32, thereby positioning and fixing the workpiece 32. Then, the first motor 17 is started, which drives one set of lead screws 15 to rotate. Under the meshing connection of three pairs of bevel gears 31, the other three sets of lead screws 15 are driven to rotate along their own axes respectively, driving the first infrared signal receiver 4 and the first infrared signal transmitter 5 to move synchronously in the same direction, and the second infrared signal transmitter 6 and the second infrared signal receiver 7 to move synchronously in the same direction. At the initial stage of movement, the infrared signal emitted by the first infrared signal transmitter 5 can be received by the first infrared signal receiver 4, and the infrared signal emitted by the second infrared signal transmitter 6 can be received by the second infrared signal receiver 7. During the movement, taking the first infrared signal receiver 4 and the first infrared signal transmitter 5 as an example, when the infrared signal emitted by the first infrared signal transmitter 5 is blocked by the workpiece 32 and cannot be received by the first infrared signal receiver 4, the timing starts and ends when the infrared signal emitted by the first infrared signal transmitter 5 is received by the first infrared signal receiver 4 again. The length of the workpiece 32 can be obtained by multiplying the time obtained by the timing by the moving speed of the first infrared signal receiver 4 and the first infrared signal transmitter 5. Similarly, the second infrared signal transmitter 6 and the second infrared signal receiver 7 can detect the height of the workpiece 32. The detected length and height of the workpiece 32 are then sent to the industrial control box 2 for display. Simultaneously, the third motor 29 is started, causing the drive gear 30 to drive the second turntable 26 to rotate. Under the cooperation of the inclined groove 27 and the first radial groove 8, the three sets of first sliders 9 are driven to move outward synchronously along the first radial groove 8. This causes the three sets of laser distance sensors 10 to move outward synchronously from the center of the workpiece 32 along the three angle bisectors of the workpiece 32. The laser is used to traverse and measure the angle bisectors of the workpiece 32. The vertical distance between the three sets of laser distance sensors 10 and the support plate 3 is the calibration distance. The thickness of the workpiece 32 can be obtained by subtracting the distance measured by the laser distance sensor 10 from the surface of the workpiece 32. The thickness of the workpiece 32 and the machining depth at the stepped hole are sent to the industrial control box 2 for display.

[0022] The present invention provides a testing machine for measuring the length and thickness of samples. Its installation method, connection method, or setting method are all common mechanical methods, and any method that can achieve its beneficial effect can be implemented.

[0023] The above are merely preferred embodiments of the present invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A testing machine for measuring the length and thickness of samples, characterized in that, The equipment includes a housing (1), which is provided with a loading port (11) and an industrial control box (2). A support plate (3) is fixed inside the housing (1). A fixture for positioning the workpiece (32) is provided on the support plate (3). A first infrared signal receiver (4), a first infrared signal transmitter (5), a second infrared signal transmitter (6) and a second infrared signal receiver (7) are slidably installed on the support plate (3). Three sets of laser distance sensors (10) are slidably installed on the top of the housing (1) for thickness detection of the three sets of stepped holes of the workpiece (32).

2. The testing machine for measuring the length and thickness of samples as described in claim 1, characterized in that, The support plate (3) has four sets of through slots (13) through it. The bottom of the support plate (3) is rotatably installed with four sets of lead screws (15) corresponding to the four sets of through slots (13). Each set of lead screws (15) is screwed with a lead screw nut (16). The four sets of lead screw nuts (16) are fixedly connected to the first infrared signal receiver (4), the first infrared signal transmitter (5), the second infrared signal transmitter (6) and the second infrared signal receiver (7) respectively by means of connecting blocks passing through the through slots (13).

3. The testing machine for measuring the length and thickness of samples as described in claim 2, characterized in that, The equipment box (1) is fixedly installed with a first motor (17) for driving one set of lead screws (15) to rotate. The two adjacent sets of lead screws (15) are connected by bevel gears (31) for transmission. The screw threads of the two opposing sets of lead screws (15) have opposite directions.

4. The testing machine for measuring the length and thickness of samples as described in claim 1, characterized in that, The support plate (3) is provided with three sets of second radial grooves (18), and the clamp includes three sets of second sliders (19) that are slidably installed in the three sets of second radial grooves (18), and each set of second sliders (19) is fixedly installed with a pressure block (20).

5. The testing machine for measuring the length and thickness of samples as described in claim 4, characterized in that, A first turntable (21) is rotatably mounted on the support plate (3). Three sets of connecting rods (22) are rotatably mounted on the first turntable (21). The three sets of connecting rods (22) are rotatably connected to three sets of second sliders (19). A motor base (23) is fixedly mounted on the bottom of the support plate (3). A second motor (24) is fixedly mounted on the motor base (23) to drive the first turntable (21) to rotate along its own axis.

6. The testing machine for measuring the length and thickness of samples as described in claim 1, characterized in that, The top of the equipment box (1) is provided with three sets of first radial grooves (8), and each set of first radial grooves (8) is slidably installed with a first slider (9). The three sets of laser distance sensors (10) are respectively fixedly installed on the three sets of first sliders (9).

7. The testing machine for measuring the length and thickness of samples as described in claim 6, characterized in that, The top of the equipment box (1) is rotatably mounted with a second turntable (26), and the second turntable (26) is provided with a sloping groove (27). Each group of the first sliders (9) is fixedly provided with a guide post (25), and the three groups of guide posts (25) are slidably installed in the three groups of sloping grooves (27).

8. The testing machine for measuring the length and thickness of samples as described in claim 7, characterized in that, A protective box (28) is also fixedly installed on the equipment box (1). The protective box (28) covers the outside of the second turntable (26). The outer wall of the second turntable (26) is provided with teeth. A third motor (29) is fixedly installed on the protective box (28). The output end of the third motor (29) is fixedly fitted with a drive gear (30). The drive gear (30) meshes with the second turntable (26).

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