A kind of inner diameter micrometer calibrating device and calibrating method based on spliced gauge block

Abstract

The application discloses a kind of based on splicing type gauge block's inner diameter micrometer calibrating device and calibration method, it is related to inner diameter micrometer calibration technical field.The present application is to solve the problem that the existing inner diameter micrometer can only be completed by snap gauge the calibration of scale head, for the error of micrometer measuring rod caused by external factors, currently, effective calibration cannot be realized.The present application includes first end calibration gauge block, first splicing gauge block, third splicing gauge block, fourth splicing gauge block, second splicing gauge block, second end calibration gauge block and gauge block splicing mechanism, first splicing gauge block, third splicing gauge block, fourth splicing gauge block and second splicing gauge block are arranged between first end calibration gauge block and second end calibration gauge block in sequence;The method comprises the following steps: step one, according to the range of inner diameter micrometer, select the required splicing gauge block.The present application is used for inner diameter micrometer calibration.

Description

Technical Field

[0001] This invention relates to the field of inside micrometer calibration technology, and in particular to an inside micrometer calibration device and calibration method based on interlocking gauge blocks. Background Technology

[0002] Gauge blocks, also known as gauge blocks, are the most basic measuring tools for controlling dimensions in the machine manufacturing industry. They serve as the medium for transmitting dimensions from standard lengths to parts and are the benchmark for length measurement in technical measurements.

[0003] A micrometer, also known as a screw gauge, is one of the most frequently used and widely applied measuring tools in industry. Renowned for its precision, the micrometer is a tool for measuring length, with an accuracy down to 0.01 mm. As a precision measuring tool, any malfunction of the micrometer will inevitably affect the measurement results, and consequently, the length measurements in subsequent projects. To ensure the accuracy and reliability of the micrometer's readings, it must be calibrated before use.

[0004] Before measuring with an inside micrometer, the micrometer head must first be calibrated. After calibration, different measuring rods with varying ranges are joined together with the micrometer head according to the dimensions of the product to be measured. However, if the joining process is affected by external factors or if the measuring rods themselves have errors, the measurement accuracy will be compromised.

[0005] Currently, the calibration of the micrometer head can only be completed using caliper gauges. For errors in the micrometer measuring rod caused by external factors, it is not yet possible to effectively calibrate them, resulting in the accumulation of errors in the overall measurement chain. Summary of the Invention

[0006] To address the problem that existing inside micrometers can only be calibrated using calipers, and cannot effectively calibrate micrometer rod errors caused by external factors, this invention provides an inside micrometer calibration device and method based on interlocking gauge blocks to solve the problems mentioned in the background art.

[0007] The technical solution of this invention is:

[0008] An inside micrometer calibration device based on spliced ​​gauge blocks includes a first end calibration gauge block, a first spliced ​​gauge block, a third spliced ​​gauge block, a fourth spliced ​​gauge block, a second spliced ​​gauge block, a second end calibration gauge block, and a gauge block splicing mechanism.

[0009] The first, third, fourth, and second splicing gauge blocks are arranged horizontally between the first and second end calibration gauge blocks; the first, third, fourth, and second splicing gauge blocks are at the same height, and the adjacent side end faces of the first and second end calibration gauge blocks abut against the inside micrometer.

[0010] The gauge block splicing mechanism consists of three sets, located between the first end calibration gauge block and the third splicing gauge block, between the third splicing gauge block and the fourth splicing gauge block, and between the fourth splicing gauge block and the second end calibration gauge block. The gauge block splicing mechanism is used to press each splicing gauge block and the end calibration gauge block together laterally.

[0011] Furthermore, the gauge block splicing mechanism includes a screw, a gauge block moving shaft, a splicing fixture clamping block, a slide, a gauge block fixing pin, and a shaft hole;

[0012] Two splicing fixture blocks are symmetrically arranged, and each end of the two splicing fixture blocks is threaded with a screw. Each of the two splicing fixture blocks has a shaft hole at its right end and a sliding groove in the middle of each splicing fixture block. The fixed gauge block pin passes through the two shaft holes in sequence, and the splicing gauge block moving shaft is slidably connected in the two sliding grooves. The end of the screw abuts against the splicing gauge block moving shaft, and the screw can push the splicing gauge block moving shaft to move closer to the fixed gauge block pin.

[0013] Furthermore, the first end calibration gauge block has a first end calibration gauge block through hole, and both ends of the third splicing gauge block have a third splicing gauge block through hole.

[0014] The moving shaft of the splicing gauge block in the left-side gauge block splicing mechanism is inserted into the through hole of the first end calibration gauge block, and the fixing gauge block pin is inserted into the through hole of the third splicing gauge block on the left side.

[0015] Furthermore, both ends of the third splicing block are provided with third splicing block through holes, and both ends of the fourth splicing block are provided with fourth splicing block through holes.

[0016] The moving shaft of the splicing gauge block in the middle gauge block splicing mechanism is inserted into the third splicing gauge block through hole on the right side, and the fixing gauge block pin is inserted into the fourth splicing gauge block through hole on the left side.

[0017] Furthermore, both ends of the fourth splicing gauge block are provided with fourth splicing gauge block through holes, and the second end calibration gauge block is provided with second end calibration gauge block through holes.

[0018] In the right-side gauge block splicing mechanism, the moving shaft of the splicing gauge block is inserted into the fourth splicing gauge block through hole on the left side, and the fixing gauge block pin is inserted into the second end calibration gauge block through hole.

[0019] Furthermore, the left end of the splicing fixture block is provided with a threaded hole, and the screw is threaded into the threaded hole.

[0020] Furthermore, a screw pusher is provided at one end of the screw near the moving shaft of the splicing block.

[0021] Furthermore, a screw knob is provided at the end of the screw that is away from the moving axis of the splicing gauge block.

[0022] Furthermore, the outer surface of the screw knob is provided with anti-slip texture.

[0023] A calibration method using an inside micrometer calibration device based on interlocking gauge blocks, the method comprising the following steps:

[0024] Step 1: Select the required splicing gauge blocks according to the measuring range of the inside micrometer. Use the gauge block splicing mechanism to splice the first end calibration gauge block, the second end calibration gauge block, and each splicing gauge block. Place the two splicing clamp blocks on both sides of the first end calibration gauge block and the third splicing gauge block. Insert the splicing gauge block moving shaft into the slide groove and the through hole of the first end calibration gauge block. Insert the fixing gauge block pin into the through hole and shaft hole of the third splicing gauge block. Rotate the screw, and the screw will push the splicing gauge block moving shaft along the slide groove toward the fixing gauge block pin until the splicing of the first end calibration gauge block and the third splicing gauge block is completed. The splicing method of the third splicing gauge block and the fourth splicing gauge block, and the splicing method of the fourth splicing gauge block and the second end calibration gauge block are the same as described above. The splicing of the inside micrometer calibration device is completed.

[0025] Step 2: Place the assembled micrometer calibration device and the inside micrometer at the same temperature. After the temperature is consistent, proceed with the inside micrometer calibration process.

[0026] Step 3: Place the inside micrometer between the first end calibration block and the second end calibration block, so that the inside micrometer probe gently touches the end face of the first end calibration block. During the calibration process, you will feel a sliding sensation up and down and left and right. Stop after gently scraping the end face of the first end calibration block. The rotation force when calibrating the inside micrometer should be consistent with the force applied to the workpiece being measured.

[0027] Step four: Record the error of the inside micrometer to complete the calibration of the inside micrometer.

[0028] Compared with the prior art, the present invention has the following advantages:

[0029] 1. This invention comprises a first end calibration gauge block, a second end calibration gauge block, and multi-level splicing gauge blocks, which are spliced ​​and fixed by a gauge block splicing mechanism to form an internal micrometer calibration device with an adjustable overall length. This device can cover the needs of internal micrometers with various measuring ranges and can calibrate internal micrometers with mounted measuring rods, filling the gap in the prior art where it was impossible to effectively calibrate the entire high-precision internal micrometer with mounted measuring rods, thus effectively ensuring the accuracy of measurements.

[0030] 2. This invention employs a modular gauge block structure, comprising a first modular gauge block, a third modular gauge block, a fourth modular gauge block, and a second modular gauge block. The calibration length is the sum of the lengths of all modular gauge blocks. The first and second modular gauge blocks are detachable, movable gauge blocks. During use, different specifications of the first and second modular gauge blocks can be flexibly replaced or added / removed according to the measuring range of the measuring rod installed on the inside micrometer, thereby achieving precise adjustment and rapid adaptation of the calibration length, significantly improving the versatility of this invention.

[0031] 3. This invention includes a gauge block splicing mechanism for flexibly fixing adjacent calibration gauge blocks. The mechanism comprises two symmetrically arranged splicing clamps, each with a threaded screw connected to its end. Both clamps have shaft holes at their right ends and sliding grooves in their middle sections. A fixing gauge block pin passes through both shaft holes, and a splicing gauge block moving shaft is slidably connected within the two sliding grooves. The end of the screw abuts against the moving shaft. In use, the moving shaft and fixing gauge block pin are inserted into the pin holes of adjacent or end calibration gauge blocks. Rotating the screw pushes the moving shaft laterally along the sliding grooves, thereby bringing the moving shaft closer to the fixing gauge block pin and fixing the adjacent calibration gauge blocks. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the structure of the present invention;

[0033] Figure 2 This is a schematic diagram of the structure after the third and fourth splicing blocks are spliced ​​together;

[0034] Figure 3 This is a schematic diagram of the block splicing mechanism before locking.

[0035] Figure 4 This is a structural diagram of a multi-level spliced ​​block;

[0036] Figure 5 An exploded view of the block assembly mechanism;

[0037] Figure 6 This is a schematic diagram of the calibration process for calibrating the inside micrometer according to the present invention.

[0038] In the diagram: 1. Screw; 2. Mesh block moving shaft; 3. Mesh fixture clamping block body; 4. Fixed gauge block pin; 5. First end calibration gauge block; 6. First mesh gauge block; 7. Third mesh gauge block; 8. Fourth mesh gauge block; 9. Second mesh gauge block; 10. Second end calibration gauge block; 11. Screw knob; 12. Third mesh gauge block through hole; 13. Fourth mesh gauge block through hole; 14. First end calibration gauge block through hole; 15. Second end calibration gauge block through hole; 16. Screw push post; 17. Threaded hole; 18. Shaft hole; 19. Slide groove; 20. Inside micrometer. Detailed Implementation

[0039] Specific implementation method one: See Figure 1-5 As shown, an inside micrometer calibration device based on spliced ​​gauge blocks is provided. This embodiment includes a first end calibration gauge block 5, a first spliced ​​gauge block 6, a third spliced ​​gauge block 7, a fourth spliced ​​gauge block 8, a second spliced ​​gauge block 9, a second end calibration gauge block 10, and a gauge block splicing mechanism.

[0040] The first splicing block 6, the third splicing block 7, the fourth splicing block 8, and the second splicing block 9 are arranged horizontally between the first end calibration block 5 and the second end calibration block 10; the first splicing block 6, the third splicing block 7, the fourth splicing block 8, and the second splicing block 9 have the same height, and the adjacent side end faces of the first end calibration block 5 and the second end calibration block 10 abut against the inside micrometer.

[0041] The gauge block splicing mechanism consists of three sets, located between the first end calibration gauge block 5 and the third splicing gauge block 7, between the third splicing gauge block 7 and the fourth splicing gauge block 8, and between the fourth splicing gauge block 8 and the second end calibration gauge block 10, respectively. The gauge block splicing mechanism is used to press each splicing gauge block and the end calibration gauge block together laterally.

[0042] Furthermore, the first end calibration block 5 and the second end calibration block 10 are located at both ends, with their adjacent end faces used to contact the end face of the inside micrometer 20. The first splicing block 6, the third splicing block 7, the fourth splicing block 8, and the second splicing block 9 are all standard gauge blocks of the same height. The first end calibration block 5 and the second end calibration block 10 are 2-3 cm higher than the splicing blocks to ensure that the inside micrometer 20 can be placed between the first end calibration block 5 and the second end calibration block 10. The first splicing block 6 and the second splicing block 9 are movable gauge blocks that can be disassembled or replaced. The first splicing block 6 and the second splicing block 9 are clamped between the first end calibration block 5 and the third splicing block 7, the fourth splicing block 8, and the second end calibration block 10 by a gauge block splicing mechanism. During use, the first splicing block 6 and the second splicing block 9 of different specifications can be flexibly replaced or added or removed according to the measuring range of the measuring rod installed on the inside micrometer, thereby realizing precise adjustment and rapid adaptation of the calibration length, and significantly improving the versatility of the invention.

[0043] This invention comprises a first end calibration gauge block 5, a second end calibration gauge block 10, and multi-level splicing gauge blocks, which are then spliced ​​and fixed together by a gauge block splicing mechanism to form an adjustable-length inside micrometer calibration device. This device can cover various measuring ranges of inside micrometers and can calibrate inside micrometers with mounted measuring rods, filling the gap in existing technologies that cannot effectively calibrate high-precision inside micrometers with mounted measuring rods as a whole, thus effectively ensuring measurement accuracy.

[0044] Specific Implementation Method Two: See Figure 5 As shown, the gauge block splicing mechanism of this embodiment includes a screw 1, a gauge block moving shaft 2, a splicing fixture clamping block 3, a sliding groove 19, a gauge block fixing pin 4, and a shaft hole 18.

[0045] Two splicing fixture clamping blocks 3 are symmetrically arranged. The ends of the two splicing fixture clamping blocks 3 are threaded with screws 1. The right ends of the two splicing fixture clamping blocks 3 are provided with shaft holes 18. The middle of the two splicing fixture clamping blocks 3 is provided with sliding grooves 19. The fixed gauge block pin 4 passes through the two shaft holes 18 in sequence. The splicing gauge block moving shaft 2 is slidably connected in the two sliding grooves 19. The end of the screw 1 abuts against the splicing gauge block moving shaft 2. The screw 1 can push the splicing gauge block moving shaft 2 to move closer to the fixed gauge block pin 4.

[0046] Furthermore, the splicing fixture clamping block 3 has an L-shaped structure, with the screw 1 threadedly connected to the horizontal section of the L-shaped structure. A sliding groove 19 is formed in the middle of the vertical section of the L-shaped structure, and a shaft hole 18 is formed at the end of the vertical section of the L-shaped structure. The splicing gauge block moving shaft 2 and the fixed gauge block pin 4 are cylindrical structures with parallel axes. The splicing gauge block moving shaft 2 and the fixed gauge block pin 4 are the load-bearing ends of the gauge block splicing mechanism, used to clamp adjacent end calibration gauge blocks or splicing gauge blocks.

[0047] In use, the splicing gauge block moving shaft 2 and the fixed gauge block pin 4 are inserted into the pin holes of the adjacent calibration gauge block or the end calibration gauge block. The rotating screw 1 pushes the splicing gauge block moving shaft 2 to move laterally along the slide groove 19, thereby driving the splicing gauge block moving shaft 2 to move closer to the fixed gauge block pin 4, so as to fix the adjacent calibration gauge block.

[0048] Specific implementation method three: See Figure 3-4 As shown, the first end calibration gauge block 5 of this embodiment has a first end calibration gauge block through hole 14, and the third splicing gauge block 7 has a third splicing gauge block through hole 12 at both ends.

[0049] The splicing gauge block moving shaft 2 in the left gauge block splicing mechanism is inserted into the first end calibration gauge block through hole 14, and the fixing gauge block pin 4 is inserted into the left third splicing gauge block through hole 12.

[0050] Detailed Implementation Method Four: See [link] Figure 3-4 As shown, in this embodiment, the third splicing block 7 has through holes 12 at both ends, and the fourth splicing block 8 has through holes 13 at both ends.

[0051] The splicing block moving shaft 2 in the middle gauge block splicing mechanism is inserted into the third splicing block through hole 12 on the right side, and the fixing block pin 4 is inserted into the fourth splicing block through hole 13 on the left side.

[0052] Specific implementation method five: See Figure 3-4 As shown, in this embodiment, the fourth splicing gauge block 8 has a fourth splicing gauge block through hole 13 at both ends, and the second end calibration gauge block 10 has a second end calibration gauge block through hole 15.

[0053] In the right-side gauge block splicing mechanism, the splicing gauge block moving shaft 2 is inserted into the fourth splicing gauge block through hole 13 on the left side, and the fixing gauge block pin 4 is inserted into the second end calibration gauge block through hole 15.

[0054] Specific implementation method six: See Figure 5 As shown, the left end of the splicing fixture clamping block 3 in this embodiment has a threaded hole 17, and the screw 1 is threadedly connected in the threaded hole 17.

[0055] Furthermore, a threaded hole 17 is provided on the horizontal part of the splicing fixture clamping block 3, and the screw 1 is threadedly connected in the threaded hole 17, so that rotating the screw 1 can drive the splicing gauge block moving shaft 2 to move laterally along the slide groove 19.

[0056] Detailed implementation method seven: See Figure 5 As shown, in this embodiment, a screw pusher 16 is provided at one end of the screw 1 near the moving shaft 2 of the splicing block.

[0057] Furthermore, the screw pusher 16 serves to increase the force-bearing area. The screw pusher 16 on the screw 1 is not threaded, in order to enhance the load-bearing capacity during propulsion.

[0058] Detailed Implementation Method Eight: See also Figure 5 As shown, in this embodiment, a screw knob 11 is provided at the end of the screw 1 away from the moving shaft 2 of the splicing gauge block.

[0059] Furthermore, the screw knob 11 is used to increase the operating torque, making it easy for the user to rotate and adjust with one hand.

[0060] Detailed Implementation Method Nine: See also Figure 5 As shown, the outer surface of the screw knob 11 in this embodiment is provided with anti-slip texture.

[0061] Furthermore, the anti-slip texture is used to increase friction and prevent slipping during operation.

[0062] When using the micrometer, select the required splicing gauge blocks according to the measuring range of the inside micrometer. The following example uses the splicing operation of the left-side gauge block splicing mechanism: Place the first splicing gauge block 6 between the first end calibration gauge block 5 and the third splicing gauge block 7, and place all three on a horizontal platform, ensuring that the bottoms are flush. Then, place the two splicing clamp blocks 3 of the gauge block splicing mechanism on both sides of the first end calibration gauge block 5 and the third splicing gauge block 7, respectively. Insert the splicing gauge block moving shaft 2 into the slide groove 19 and the first end calibration gauge block through hole 14, and insert the fixing gauge block pin 4 into the third splicing gauge block through hole 12 and the shaft hole 18. Then, rotate the screw 1, which will push the splicing gauge block moving shaft 2 along the slide groove 19 towards the fixing gauge block pin 4 until the splicing of the first end calibration gauge block 5 and the third splicing gauge block 7 is completed. The splicing methods of the third splicing block 7 and the fourth splicing block 8, and the fourth splicing block 8 and the second end calibration block 10 are the same as those described above. After all splicing is completed, the inside micrometer calibration device is assembled.

[0063] Detailed Implementation Method Ten: See [link / details] Figure 1-6 As shown, a calibration method using an inside micrometer calibration device based on interlocking gauge blocks includes the following steps:

[0064] Step 1: Select the required splicing blocks according to the measuring range of the inside micrometer. Use the block splicing mechanism to splice the first end calibration block 5, the second end calibration block 10, and each splicing block. Place the two splicing clamp blocks 3 on both sides of the first end calibration block 5 and the third splicing block 7. Insert the splicing block moving shaft 2 into the slide groove 19 and the through hole 14 of the first end calibration block. Insert the fixing block pin 4 into the through hole 12 and the shaft hole 18 of the third splicing block. Rotate the screw 1. The screw 1 pushes the splicing block moving shaft 2 along the slide groove 19 toward the fixing block pin 4 until the splicing of the first end calibration block 5 and the third splicing block 7 is completed. The splicing method of the third splicing block 7 and the fourth splicing block 8, and the splicing method of the fourth splicing block 8 and the second end calibration block 10 are the same as described above. The splicing of the inside micrometer calibration device is completed.

[0065] Step 2: Place the assembled micrometer calibration device and the inside micrometer at the same temperature. After the temperature is consistent, proceed with the inside micrometer calibration process.

[0066] Step 3: Place the inside micrometer between the first end calibration block 5 and the second end calibration block 10, so that the inside micrometer probe gently touches the end face of the first end calibration block 5. During the calibration process, there will be a sliding feeling up and down and left and right. Stop after gently scraping the end face of the first end calibration block 5. The rotation force when calibrating the inside micrometer should be consistent with the force of measuring the workpiece.

[0067] Step four: Record the error of the inside micrometer to complete the calibration of the inside micrometer.

[0068] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A calibration device for an inside micrometer based on interlocking gauge blocks, characterized in that: It includes a first end calibration gauge block (5), a first splicing gauge block (6), a third splicing gauge block (7), a fourth splicing gauge block (8), a second splicing gauge block (9), a second end calibration gauge block (10), and a gauge block splicing mechanism; The first splicing block (6), the third splicing block (7), the fourth splicing block (8), and the second splicing block (9) are arranged horizontally between the first end calibration block (5) and the second end calibration block (10); the first splicing block (6), the third splicing block (7), the fourth splicing block (8), and the second splicing block (9) have the same height, and the adjacent side end faces of the first end calibration block (5) and the second end calibration block (10) abut against the inside micrometer; The gauge block splicing mechanism is provided in three sets, located between the first end calibration gauge block (5) and the third splicing gauge block (7), between the third splicing gauge block (7) and the fourth splicing gauge block (8), and between the fourth splicing gauge block (8) and the second end calibration gauge block (10). The gauge block splicing mechanism is used to press each splicing gauge block and the end calibration gauge block together laterally.

2. The micrometer calibration device based on interlocking gauge blocks according to claim 1, characterized in that: The gauge block splicing mechanism includes a screw (1), a gauge block moving shaft (2), a splicing fixture clamping block (3), a slide (19), a gauge block fixing pin (4), and a shaft hole (18). Two splicing fixture blocks (3) are symmetrically arranged. The ends of the two splicing fixture blocks (3) are threaded with screws (1). The right ends of the two splicing fixture blocks (3) are provided with shaft holes (18). The middle part of the two splicing fixture blocks (3) is provided with sliding grooves (19). The fixed gauge block pin (4) passes through the two shaft holes (18) in sequence. The splicing gauge block moving shaft (2) is slidably connected in the two sliding grooves (19). The end of the screw (1) abuts against the splicing gauge block moving shaft (2). The screw (1) can push the splicing gauge block moving shaft (2) to move closer to the fixed gauge block pin (4).

3. The micrometer calibration device based on interlocking gauge blocks according to claim 2, characterized in that: The first end calibration gauge block (5) has a first end calibration gauge block through hole (14), and the third splicing gauge block (7) has a third splicing gauge block through hole (12) at both ends. The splicing gauge block moving shaft (2) in the left gauge block splicing mechanism is inserted into the first end calibration gauge block through hole (14), and the fixed gauge block pin (4) is inserted into the left third splicing gauge block through hole (12).

4. The micrometer calibration device based on interlocking gauge blocks according to claim 2, characterized in that: The third splicing block (7) has through holes (12) at both ends, and the fourth splicing block (8) has through holes (13) at both ends. The splicing block moving shaft (2) in the middle block splicing mechanism is inserted into the third splicing block through hole (12) on the right side, and the fixed block pin (4) is inserted into the fourth splicing block through hole (13) on the left side.

5. The micrometer calibration device based on interlocking gauge blocks according to claim 2, characterized in that: The fourth splicing gauge block (8) has through holes (13) at both ends, and the second end calibration gauge block (10) has through holes (15). The measuring block moving shaft (2) in the right-side measuring block splicing mechanism is inserted into the fourth splicing measuring block through hole (13) on the left side, and the fixed measuring block pin (4) is inserted into the second end calibration measuring block through hole (15).

6. The micrometer calibration device based on interlocking gauge blocks according to claim 2, characterized in that: The left end of the splicing fixture clamping block (3) has a threaded hole (17), and the screw (1) is threaded into the threaded hole (17).

7. The micrometer calibration device based on interlocking gauge blocks according to claim 2, characterized in that: A screw pusher (16) is provided at one end of the screw (1) near the moving shaft (2) of the splicing block.

8. The micrometer calibration device based on interlocking gauge blocks according to claim 2, characterized in that: A screw knob (11) is provided at the end of the screw (1) away from the moving shaft (2) of the splicing block.

9. The micrometer calibration device based on interlocking gauge blocks according to claim 8, characterized in that: The outer surface of the screw knob (11) is provided with anti-slip texture.

10. A calibration method for an inside micrometer calibration device based on interlocking gauge blocks as described in any one of claims 1-9, characterized in that, The method includes the following steps: Step 1: Select the required splicing gauge blocks according to the measuring range of the inside micrometer. Use the gauge block splicing mechanism to splice the first end calibration gauge block (5), the second end calibration gauge block (10), and each splicing gauge block. Place the two splicing fixture clamps (3) on both sides of the first end calibration gauge block (5) and the third splicing gauge block (7). Insert the splicing gauge block moving shaft (2) into the slide groove (19) and the through hole (14) of the first end calibration gauge block. Insert the fixing gauge block pin (4) into the through hole of the third splicing gauge block. (12) and shaft hole (18), rotate screw (1), screw (1) pushes splicing block moving shaft (2) along slide groove (19) toward fixed block pin shaft (4) until the splicing of the first end calibration block (5) and the third splicing block (7) is completed. The splicing method of the third splicing block (7) and the fourth splicing block (8) and the splicing method of the fourth splicing block (8) and the second end calibration block (10) are the same as described above, and the splicing of the inner micrometer calibration device is completed. Step 2: Place the assembled micrometer calibration device and the inside micrometer at the same temperature. After the temperature is consistent, proceed with the inside micrometer calibration process. Step 3: Place the inside micrometer between the first end calibration block (5) and the second end calibration block (10), so that the inside micrometer probe gently touches the end face of the first end calibration block (5). During the calibration process, there is a sliding feeling up and down and left and right. Stop after gently scraping the end face of the first end calibration block (5). The rotation force when calibrating the inside micrometer should be consistent with the force when measuring the workpiece. Step four: Record the error of the inside micrometer to complete the calibration of the inside micrometer.

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