A force detection device and method based on a three-jaw internal diameter micrometer gauge

Abstract

The present application relates to three claw inner diameter micrometer measuring force detection technical field, specifically to a kind of based on three claw inner diameter micrometer measuring force detection device and detection method, based on three claw inner diameter micrometer measuring force detection device includes base, movable clamp and three claw chuck, movable clamp and three claw chuck are respectively arranged in the both ends of base, movable clamp is used to chuck the three claw inner diameter micrometer to be measured and can drive three claw inner diameter micrometer move in horizontal direction and vertical direction, the movable clamp jaw of three claw chuck is correspondingly provided with digital display force sensor on the side opposite to three claw chuck center, the measuring head of digital display force sensor is located on the center line corresponding movable clamp jaw, three digital display force sensors and three measuring claws of three claw inner diameter micrometer are one-to-one corresponding abutment cooperation.This application has the beneficial effects that: it can reduce the measurement error caused by three claw inner diameter micrometer center displacement, and then improve measurement accuracy and work efficiency.

Description

Technical Field

[0001] This invention relates to the field of force detection technology for three-jaw inside micrometers, specifically to a detection device and method for force measurement based on a three-jaw inside micrometer. Background Technology

[0002] Existing national standards for three-jaw inside micrometers specify the measuring force requirements and provide methods for verifying the measuring force: such as... Figure 1 As shown, the force measurement is checked using a force gauge 1 with a scale division of no more than 0.2N and an accuracy class of 2.5. During the check, a 60° V-block 3 (or a similar device) is used, and it is ensured that the three measuring jaws of the three-jaw micrometer 2 are subjected to force simultaneously.

[0003] In the above inspection method, the three measuring jaws are subjected to force simultaneously. Since the V-block 3 is fixed, when the three measuring jaws extend, the center (axis) of the measuring head of the three-jaw inside micrometer 2 will be displaced upward. Consequently, during the measurement process, the displacement of the center of the three-jaw inside micrometer will cause measurement errors, making it difficult to guarantee the accuracy of the measurement results. Furthermore, it is difficult to clamp the three-jaw inside micrometer while it is moving upward, resulting in low efficiency. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a detection device and method for measuring force based on a three-jaw inside micrometer, which can reduce the measurement error caused by the center displacement of the three-jaw inside micrometer, thereby improving measurement accuracy and work efficiency.

[0005] The objective of this invention is achieved through the following technical solution:

[0006] A detection method based on a force-measuring device for a three-jaw inside micrometer is disclosed. The force-measuring device includes a base, a movable clamp, and a three-jaw chuck. The movable clamp and the three-jaw chuck are respectively located at both ends of the base. The movable clamp is used to clamp the three-jaw inside micrometer to be measured and can drive the three-jaw inside micrometer to move in the horizontal and vertical directions. A digital display force sensor is correspondingly provided on the side of the movable jaw of the three-jaw chuck opposite to the center of the three-jaw chuck. The probe of the digital display force sensor is located on the center line of the corresponding movable jaw. The three digital display force sensors are in one-to-one contact with the three measuring jaws of the three-jaw inside micrometer.

[0007] The following steps are included when testing the measuring force of a three-jaw inside micrometer:

[0008] S1. Zero the digital force sensor, adjust the position of the movable jaw of the three-jaw chuck, and adjust the position of the three-jaw inside micrometer through the movable fixture so that the three measuring jaws of the three-jaw inside micrometer are in contact with the probes of the three digital force sensors respectively. Then, finely adjust the position of the three-jaw inside micrometer through the movable fixture so that the readings of the three digital force sensors are the same.

[0009] S2. Rotate the force measuring device of the three-jaw inside micrometer. When the force measuring device makes a sound, read the values ​​of the three digital force sensors and take the maximum value as the measuring force of the three-jaw inside micrometer.

[0010] Furthermore, a positioning block is provided on the digital force sensor directly below the probe. A V-shaped positioning groove is provided on the side of the positioning block opposite to the center of the three-jaw chuck in the vertical direction. The center line of the V-shaped positioning groove is collinear with the center of the probe of the digital force sensor. In step S1, when the measuring jaw of the three-jaw inside micrometer contacts the probe of the digital force sensor, the position of the movable jaw of the three-jaw chuck is adjusted so that the measuring jaw of the three-jaw inside micrometer falls into the corresponding V-shaped positioning groove. Then, the three-jaw inside micrometer is clamped and fixed by the movable clamp. Then, the three-jaw inside micrometer is moved upward by the movable clamp so that the measuring jaw of the three-jaw inside micrometer moves along the center line of the V-shaped positioning groove until it contacts the probe of the digital force sensor.

[0011] Furthermore, the horizontal movement trajectory of the center of the three-jaw inside micrometer is collinear with the movement trajectory of one of the movable jaws of the three-jaw chuck; in step S1, when fine-tuning the position of the three-jaw inside micrometer, the horizontal position of the three-jaw inside micrometer is fine-tuned by the movable clamp so that the readings of the three digital force sensors are approximately the same.

[0012] Furthermore, the movable fixture includes a horizontal moving component, a vertical moving component, and a clamping component. The horizontal moving component is located on the base, the vertical moving component is located on the horizontal moving component, and the clamping component is located on the vertical moving component and is used to clamp the three-jaw inside micrometer.

[0013] Furthermore, the horizontal moving component includes a guide rail and a slide. The guide rail is mounted on the base along the horizontal moving direction of the three-jaw micrometer, and the bottom of the slide is slidably mounted on the guide rail via a slider. The vertical moving component is mounted on the slide.

[0014] Furthermore, the vertical moving component includes a column and a support arm. The column is mounted on a slide block, one end of the support arm is slidably sleeved on the column, and the other end of the support arm is connected to a clamping component.

[0015] Furthermore, the clamping assembly includes a clamping frame, a top block, and an adjusting bolt. One end of the clamping frame is fixed to the support arm. A V-shaped groove is provided on the inner side of the clamping frame near the support arm. A three-jaw micrometer passes through the clamping frame and engages with the V-shaped groove. An adjusting bolt is threaded to the end of the clamping frame away from the support arm. The shank of the adjusting bolt passes through the inner side of the clamping frame and is connected to the top block. The top block abuts against the three-jaw micrometer.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. This invention, through the configuration of a movable clamp, a three-jaw chuck, and a digital force sensor, allows for force measurement of a three-jaw inside micrometer. The movable clamp adjusts the position of the micrometer, and the automatic centering feature of the three-jaw chuck perfectly matches the working principle of the micrometer. This prevents the micrometer from shifting upwards due to force on the measuring jaws during measurement, thus reducing measurement errors caused by upward shift of the micrometer's center. Simultaneously, the digital force sensor facilitates data reading, reducing errors from traditional visual readings and further improving measurement accuracy.

[0018] 2. By setting up positioning blocks and V-shaped positioning grooves, this invention can cooperate with movable fixtures during the force measurement of a three-jaw inside micrometer, enabling rapid and accurate clamping and positioning of the three-jaw inside micrometer, thereby improving work efficiency.

[0019] 3. This invention is applicable to force measurement of three-jaw micrometers of different specifications. The testing operation is simple and the measurement time is short, which can provide convenience for manufacturing enterprises and various metrology and testing institutions, and has great application and promotion value. Attached Figure Description

[0020] Figure 1 This is a schematic diagram illustrating the force verification in the existing technology of a three-jaw inside micrometer.

[0021] Figure 2 This is a three-dimensional schematic diagram of the overall structure of the present invention;

[0022] Figure 3 This is a front view schematic diagram of the overall structure of the present invention;

[0023] Figure 4 This is a top view of the overall structure of the present invention;

[0024] Figure 5 for Figure 3 A schematic cross-sectional view of the structure along the AA direction;

[0025] Figure 6 This is a schematic diagram of the structure of the digital display force sensor in this invention.

[0026] In the diagram: 1. Force gauge; 2. Three-jaw inside micrometer; 3. V-block; 4. Base; 5. Three-jaw chuck; 6. Movable jaw; 7. Digital display force sensor; 8. Probe; 9. Guide rail; 10. Slide; 11. Column; 12. Support arm; 13. Clamping frame; 14. Top block; 15. Adjusting bolt; 16. V-groove; 17. Positioning block; 18. V-groove; 19. Slider; 20. Wrench; 21. Tightening bolt; 22. Locking bolt. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited to the following description.

[0028] like Figures 2-6 As shown, a testing device based on the force measurement of a three-jaw inside micrometer includes a base 4, a movable clamp, and a three-jaw chuck 5. The movable clamp and the three-jaw chuck 5 are respectively installed at both ends of the base 4. The movable clamp is used to clamp the three-jaw inside micrometer 2 to be measured. The movable clamp can drive the three-jaw inside micrometer 2 to move in the horizontal and vertical directions, thereby adjusting the position of the three-jaw inside micrometer 2. On the three movable jaws 6 of the three-jaw chuck 5, a digital display force sensor 7 is installed on the side opposite to the center of the three-jaw chuck 5. The probe 8 of the digital display force sensor 7 is located on the center line of the corresponding movable jaw 6. The three digital display force sensors 7 are in one-to-one contact with the three measuring jaws of the three-jaw inside micrometer 2.

[0029] like Figures 2-4 As shown, the movable fixture includes a horizontal moving component, a vertical moving component, and a clamping component. The horizontal moving component is mounted on the base 4, the vertical moving component is mounted on the horizontal moving component, and the clamping component is mounted on the vertical moving component. The horizontal moving component includes a guide rail 9 and a slide 10. The guide rail 9 is fixed to the base 4 along the horizontal moving direction of the three-jaw micrometer 2, and the bottom of the slide 10 is slidably mounted on the guide rail 9 via a slider 19. The vertical moving component includes a column 11 and a support arm 12. The column 11 is fixed to the slide 10, one end of the support arm 12 is slidably sleeved on the column 11, and the other end of the support arm 12 is connected to the clamping component. The clamping assembly is used to clamp the three-jaw inside micrometer 2. After the three-jaw inside micrometer 2 is clamped and fixed, the sliding of the slide block 10 on the guide rail 9 drives the three-jaw inside micrometer 2 to move in the horizontal direction, and the sliding of the support arm 12 on the column 11 drives the three-jaw inside micrometer 2 to move in the vertical direction, thereby realizing the position adjustment of the three-jaw inside micrometer 2.

[0030] like Figure 2 , Figure 3As shown, a vertical tightening bolt 21 is threaded onto the slide block 10. A wrench 20 is fixed to the top of the tightening bolt 21. The lower end of the tightening bolt 21 passes through the slide block 10 and is fixedly connected to a rubber pressure block. After the slide block 10 is slid into place, the tightening bolt 21 is moved downward by turning the wrench 20, so that the rubber pressure block is tightly pressed against the base 4, thereby fixing the slide block 10.

[0031] like Figures 2-4 As shown, one end of the support arm 12 that is slidably connected to the column 11 has an opening along the length of the support arm 12. A locking bolt 22 is threadedly connected to one side of the support arm 12 at the opening. The locking bolt 22 passes through the opening. After the support arm 12 is slid into place, the parts of the support arm 12 located on both sides of the opening are closed by tightening the locking bolt 22, thereby making the support arm 12 tightly clamp the column 11, thus fixing the support arm 12.

[0032] like Figure 2 , Figure 4 As shown, the clamping assembly includes a clamping frame 13, a top block 14, and an adjusting bolt 15. One end of the clamping frame 13 is fixed to the support arm 12. A V-shaped groove 16 is provided on the inner side of the clamping frame 13 near the support arm 12. The adjusting bolt 15 is threadedly connected to the end of the clamping frame 13 away from the support arm 12. The shank of the adjusting bolt 15 passes through the inner side of the clamping frame 13 and is fixedly connected to the top block 14. By sliding the slide block 10 and the support arm 12, the three-jaw micrometer 2 passes through the clamping frame 13 and engages with the V-shaped groove 16. Then, by turning the adjusting bolt 15, the top block 14 is tightly pressed against the three-jaw micrometer 2, thereby clamping and fixing the three-jaw micrometer 2 between the top block 14 and the V-shaped groove 16.

[0033] like Figure 2 , Figure 4 As shown, the fixing method between the support arm 12 and the clamping frame 13 is the same as the fixing method of the support arm 12 on the column 11. Specifically, one end of the support arm 12 is clamped on the clamping frame 13. The side wall of the end of the support arm 12 that clamps the clamping frame 13 has an opening. The top of the support arm 12 is threaded with a locking bolt 22 that passes through the opening. By tightening the locking bolt 22, the parts of the support arm 12 located on both sides of the opening are closed, thereby making the support arm 12 tightly clamp the clamping frame 13, thus achieving the fixing of the clamping frame 13.

[0034] When using the above-mentioned testing device to test the measuring force of a three-jaw inside micrometer 2, the following testing steps are included:

[0035] S1. Zero the digital force sensor 7, adjust the position of the movable jaw 6 of the three-jaw chuck 5, and adjust the position of the three-jaw inside micrometer 2 through the movable clamp so that the three measuring jaws of the three-jaw inside micrometer 2 contact the probes 8 of the three digital force sensors 7 respectively. Then, finely adjust the position of the three-jaw inside micrometer 2 through the movable clamp so that the readings of the three digital force sensors 7 are the same.

[0036] S2. Rotate the force measuring device of the three-jaw inside micrometer 2. When the force measuring device makes a sound, read the values ​​of the three digital display force sensors 7. Take the maximum value of the reading as the measuring force of the three-jaw inside micrometer 2.

[0037] like Figure 4 , Figure 6 As shown, in order to facilitate quick and accurate positioning of the three-jaw chuck 2, a positioning block 17 is fixed on the digital force sensor 7 directly below the probe 8. A V-shaped positioning groove 18 is provided on the side of the positioning block 17 opposite to the center of the three-jaw chuck 5 in the vertical direction. The center line of the V-shaped positioning groove 18 is collinear with the center of the probe 8 of the digital force sensor 7. Since the included angles between each pair of the three movable jaws 6 of the three-jaw chuck 5 are 120°, the included angles between each pair of the three V-shaped positioning grooves 18 are also 120°. Thus, in step S1, when the measuring jaw of the three-jaw inner micrometer 2 contacts the probe 8 of the digital force sensor 7, the position of the movable jaws 6 of the three-jaw chuck 5 can be adjusted so that the measuring jaw of the three-jaw inner micrometer 2 first falls into the corresponding V-shaped positioning groove 18. Then, the three-jaw inner micrometer 2 is clamped and fixed by the movable clamp. Next, the three-jaw inner micrometer 2 is moved upward by the movable clamp, thereby moving the measuring jaw of the three-jaw inner micrometer 2 along the center line of the V-shaped positioning groove 18 to contact the probe 8 of the digital force sensor 7, thereby achieving rapid positioning of the three-jaw inner micrometer 2. In addition, since the three movable jaws 6 of the three-jaw chuck 5 move radially simultaneously to achieve automatic centering during operation, it perfectly matches the working principle of the three-jaw inside micrometer 2. Therefore, when the measuring jaws of the three-jaw inside micrometer 2 are under force, the three-jaw inside micrometer 2 will not move upward. This also solves the problem of difficulty in clamping the three-jaw inside micrometer 2 when it moves upward during measurement. Furthermore, the stroke of the movable jaws 6 of the three-jaw chuck 5 is adjustable, making it suitable for measuring three-jaw inside micrometer 2 of different specifications.

[0038] like Figure 5As shown, in order to make the operation of fine-tuning the position of the three-jaw inside micrometer 2 more convenient and faster, when installing the movable clamp and the three-jaw chuck 5, the horizontal movement trajectory of the center of the three-jaw inside micrometer 2 is collinear with the movement trajectory of one of the movable jaws 6 of the three-jaw chuck 5. In this way, in step S1, not only can three-jaw inside micrometers 2 of various specifications be quickly clamped, but also only the horizontal position of the three-jaw inside micrometer 2 needs to be finely adjusted by the movable clamp to make the readings of the three digital force sensors 7 approximately the same.

[0039] Through the aforementioned detection device and corresponding detection method based on the force measurement of a three-jaw inside micrometer, this invention enables rapid and accurate clamping and positioning of the three-jaw inside micrometer 2 during the force measurement process. The three-jaw inside micrometer 2 will not shift upwards due to the measuring jaws being subjected to the force, thus reducing measurement errors caused by the upward shift of the center of the three-jaw inside micrometer 2. Simultaneously, the digital display force sensor 7 facilitates data reading, reducing errors caused by traditional visual readings and further improving detection accuracy. Furthermore, this invention not only significantly shortens measurement time and reduces the operational difficulty for operators, but also provides convenience for manufacturing enterprises and various metrology and testing institutions, possessing significant application and promotion value.

[0040] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A detection method based on a force-measuring device using a three-jaw inside micrometer, characterized in that: The force measurement device based on the three-jaw micrometer includes a base (4), a movable clamp and a three-jaw chuck (5). The movable clamp and the three-jaw chuck (5) are respectively located at both ends of the base (4). The movable clamp is used to clamp the three-jaw micrometer (2) to be measured and can drive the three-jaw micrometer (2) to move in the horizontal and vertical directions. The movable jaw (6) of the three-jaw chuck (5) is provided with a digital force sensor (7) on the side opposite to the center of the three-jaw chuck (5). The probe (8) of the digital force sensor (7) is located on the center line of the corresponding movable jaw (6). The three digital force sensors (7) are in one-to-one contact with the three measuring jaws of the three-jaw micrometer (2). When testing the force of a three-jaw inside micrometer (2), the following testing steps are included: S1. Zero the digital force sensor (7), adjust the position of the movable jaw (6) of the three-jaw chuck (5), and adjust the position of the three-jaw micrometer (2) through the movable clamp so that the three measuring jaws of the three-jaw micrometer (2) contact the probes (8) of the three digital force sensors (7) respectively. Then, finely adjust the position of the three-jaw micrometer (2) through the movable clamp so that the readings of the three digital force sensors (7) are the same. S2. Rotate the force measuring device of the three-jaw micrometer (2). When the force measuring device makes a sound, read the values ​​of the three digital force sensors (7) and take the maximum value of the reading as the measuring force of the three-jaw micrometer (2).

2. The detection method based on the force measuring device of a three-jaw micrometer according to claim 1, characterized in that: A positioning block (17) is provided on the digital force sensor (7) directly below the probe (8). A V-shaped positioning groove (18) is provided on the side of the positioning block (17) opposite to the center of the three-jaw chuck (5) in the vertical direction. The center line of the V-shaped positioning groove (18) is collinear with the center of the probe (8) of the digital force sensor (7). In step S1, when the measuring jaw of the three-jaw micrometer (2) is brought into contact with the probe (8) of the digital force sensor (7), the adjustment is performed. Position the movable jaw (6) of the three-jaw chuck (5) so that the measuring jaw of the three-jaw inside micrometer (2) falls into the corresponding V-shaped positioning groove (18). Then, the three-jaw inside micrometer (2) is clamped and fixed by the movable clamp. Then, the three-jaw inside micrometer (2) is moved upward by the movable clamp so that the measuring jaw of the three-jaw inside micrometer (2) moves along the center line of the V-shaped positioning groove (18) to contact the probe (8) of the digital display force sensor (7).

3. The detection method based on the force measuring device of a three-jaw micrometer according to claim 1, characterized in that: The horizontal movement trajectory of the center of the three-jaw inside micrometer (2) is collinear with the movement trajectory of one movable jaw (6) of the three-jaw chuck (5); in step S1, when the position of the three-jaw inside micrometer (2) is finely adjusted, the horizontal position of the three-jaw inside micrometer (2) is finely adjusted by the movable clamp so that the readings of the three digital force sensors (7) are approximately the same.

4. The detection method of the detection device based on the force measurement of a three-jaw micrometer according to claim 1, characterized in that: The movable fixture includes a horizontal moving component, a vertical moving component and a clamping component. The horizontal moving component is located on the base (4), the vertical moving component is located on the horizontal moving component, and the clamping component is located on the vertical moving component and is used to clamp a three-jaw micrometer (2).

5. The detection method of the detection device based on the force measurement of a three-jaw micrometer according to claim 4, characterized in that: The horizontal moving component includes a guide rail (9) and a slide (10). The guide rail (9) is located on the base (4) along the horizontal moving direction of the three-jaw micrometer (2). The bottom of the slide (10) is slidably located on the guide rail (9) via a slider (19). The vertical moving component is located on the slide (10).

6. The detection method of the detection device based on the measuring force of a three-jaw micrometer according to claim 5, characterized in that: The vertical moving component includes a column (11) and a support arm (12). The column (11) is mounted on a slide (10). One end of the support arm (12) is slidably mounted on the column (11), and the other end of the support arm (12) is connected to a clamping component.

7. The detection method of the detection device based on the force measurement of a three-jaw micrometer according to claim 6, characterized in that: The clamping assembly includes a clamping frame (13), a top block (14), and an adjusting bolt (15). One end of the clamping frame (13) is fixed to the support arm (12). A V-shaped groove (16) is provided on the inner side of the clamping frame (13) near the support arm (12). The three-jaw micrometer (2) passes through the clamping frame (13) and engages with the V-shaped groove (16). The end of the clamping frame (13) away from the support arm (12) is threaded with an adjusting bolt (15). The rod of the adjusting bolt (15) passes into the inner side of the clamping frame (13) and is connected to the top block (14). The top block (14) abuts against the three-jaw micrometer (2).

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