A new type of detector for inside clamping vernier caliper

Abstract

This invention discloses a novel internal clamping vernier caliper testing instrument, comprising a support base, a lower end pad on the upper surface of the support base, a support frame fixedly mounted on the upper rear surface of the support base, caliper fixing components on the left and right sides of the support frame, standard measuring blocks inside and on the upper part of the support base, several evenly distributed fixing grooves on the upper surface of the support base, a hydraulic cylinder mounted on the upper surface of the middle rear side of the support base, a movable plate connected to the top of the upper end of the hydraulic cylinder, a limit bracket at the connection between the middle of the movable plate and the support frame, and a first flat plate on the top of the upper end of the movable plate. This novel internal clamping vernier caliper testing instrument, through the use of the caliper fixing components, can fix the position of the vernier caliper, aligning it with the standard measuring blocks. By simply reading the measured value of the vernier caliper, the accuracy of the tested vernier caliper can be determined.

Description

Technical Field

[0001] This invention relates to the field of measuring instrument calibration technology, specifically to a novel internal clamping vernier caliper testing instrument. Background Technology

[0002] A vernier caliper is a measuring tool used to measure length, inner and outer diameters, and depth. It consists of a main scale and a sliding vernier scale attached to the main scale. It is widely used in precision measurement. As a high-precision measuring tool, the manufacturing precision of the vernier caliper directly affects the measurement accuracy. In order to ensure the accuracy of the measurement, the vernier caliper needs to be calibrated over a long period of time.

[0003] Chinese Patent CN203981049U discloses an internal clamping vernier caliper measuring instrument, comprising two sets of vernier caliper fixing mechanisms and a measuring reference assembly. The vernier caliper fixing mechanisms are symmetrically arranged relative to the measuring reference assembly. Each vernier caliper fixing mechanism includes a slide rail, a rack fixing mechanism, and a jaw fixing mechanism. The rack fixing mechanism is fixed to the slide rail and includes two rack fixing jaws symmetrically arranged relative to the middle of the slide rail. Each rack fixing jaw has a straight groove, and a clamping bolt is located on one side of the straight groove, movably connected to the fixing jaw. The jaw fixing structure includes two... A fixed claw is symmetrically arranged in a mirror image of the middle of the slide rail. The fixed claw is slidably connected to the slide rail. The fixed claw has an open groove machined inside. The open end of the open groove is set facing each other. A clamping screw is also rotatably connected to the side of the fixed claw facing away from the open groove. The clamping screw is movably connected to the rack fixed claw through a thread. The direction of operation of the clamping screw is parallel to the linear groove. The fixed claw is also slidably connected to the slide rail. The measuring reference component includes a reference block. The reference block is cylindrical. A cylindrical through hole is set in the center of the reference block. A fixed block is set on the slide rail. The fixed blocks of the two sets of vernier caliper fixing mechanisms are inserted into the cylindrical through hole of the reference block.

[0004] This application describes a device for testing the accuracy of vernier calipers and its ease of use. This application also designs a device for testing the accuracy of vernier calipers, thereby ensuring the accuracy of the data from the vernier calipers. Summary of the Invention

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this invention provides a novel internal clamping vernier caliper testing instrument, which solves the problem that the numerical accuracy of vernier calipers decreases after long-term use, making it impossible to test the numerical accuracy of the vernier calipers and causing errors during measurement.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, the present invention provides the following technical solution: a novel internal clamping vernier caliper testing instrument, comprising a support base, a lower end pad provided on the upper surface of the support base, a support frame fixedly installed on the upper rear surface of the support base, caliper fixing components provided on the left and right sides of the support frame, standard measuring blocks provided inside and on the upper part of the support base, a plurality of fixing grooves provided on the upper surface of the support base, the fixing grooves being evenly distributed, a hydraulic cylinder installed on the upper surface of the middle rear side of the support base, a movable plate connected to the top of the upper end of the hydraulic cylinder, a limit frame provided at the connection between the middle of the movable plate and the support frame, a first plate provided on the top of the upper end of the movable plate, a second plate provided on the outer side of the first plate, a detection needle provided on the inner side of the middle of the first plate and the second plate, and the top of the upper end of the detection needle connected to a hardness tester.

[0009] The above technical solution can fix the position of the vernier caliper, detect the numerical accuracy and hardness of the vernier caliper, facilitate the operation of the operator, and improve the applicability of the device.

[0010] Preferably, the upper end of the support frame is symmetrically provided with a throttle handle on the left and right sides, and the inner end face of the throttle handle is connected to a threaded rod, which is disposed inside the left and right sides of the support frame.

[0011] Through the above technical solution, by rotating the throttle, the throttle can drive the threaded rod to rotate, which in turn can drive the caliper fixing component to move, thereby adjusting and fixing the position of the caliper fixing component.

[0012] Preferably, the caliper fixing assembly includes a nut sleeve, a mounting bracket, a limiting plate, an inner column, a base plate, an upper end pad, and guide rods. The outer surface of the nut sleeve is provided with the mounting bracket, the outer surface of the mounting bracket is provided with the limiting plate, the middle part of the mounting bracket is installed with the inner column, the bottom of the lower end of the inner column is connected to the base plate, the lower side surface of the base plate is provided with the upper end pad, and the upper surfaces of the left and right sides of the base plate are provided with guide rods.

[0013] The above technical solution, through the use of caliper fixing components, can fix the positions of both ends of the vernier caliper, preventing shaking during the testing process.

[0014] Preferably, the limiting plate and the mounting frame are connected to each other by fixing screws, the inner end of the limiting plate is nested with the inner column, and the inner column and the mounting frame form a lifting structure.

[0015] The above technical solution uses a limiting plate to fix the height of the inner column, which in turn fixes the position of the base plate, thus fixing the position of the vernier caliper.

[0016] Preferably, a plurality of standard measuring blocks are provided, the lengths of the standard measuring blocks are different, and fixed blocks are evenly distributed on the lower surface of the standard measuring blocks.

[0017] The above technical solution allows for the replacement of standard measuring blocks as needed, facilitating multiple tests by operators.

[0018] Preferably, the inner end of the fixing groove is connected to the fixing buckle, the fixing buckle is distributed on the surface of the connecting plate, the connecting plates are connected by the connecting rod, the outermost connecting plate is connected to the pull plate, and an elastic pad is provided between the outermost connecting plate and the support base.

[0019] By pulling or squeezing the pull plate, the connecting plate can be slid, which in turn allows the fixing buckle to slide, thus completing the replacement of the standard measuring block.

[0020] Preferably, the connecting plate and the fixing buckle are an integrated structure, the connecting plate forms a sliding structure through a pull plate, and the connecting plate forms an elastic structure through an elastic pad.

[0021] Through the above technical solution, when the device is in use, the use of elastic pads can squeeze the connecting plate, thereby causing the connecting plate to drive the fixing buckle to complete the fixation of the standard measuring block position.

[0022] Preferably, the movable plate and the limiting frame are connected in a nested manner, and the movable plate forms a lifting structure through a hydraulic cylinder.

[0023] The above technical solution uses a hydraulic cylinder to raise and lower the upper movable plate, while the use of a limit frame can fix the raising and lowering direction of the movable plate.

[0024] Preferably, the first plate and the second plate are connected to each other by a connecting piece, the first plate and the second plate form a disassembly and installation structure by the connecting piece, and the first plate and the second plate are fixed to each other by fixing screws.

[0025] Using the above technical solution, the first and second plates can be separated using a connecting piece, after which the hardness tester can be disassembled and replaced.

[0026] (III) Beneficial Effects

[0027] This invention provides a novel internal clamping vernier caliper testing instrument. It has the following beneficial effects:

[0028] (1) The new type of internal clamping vernier caliper testing instrument can fix the position of the vernier caliper by using the caliper fixing component. Then, by using the standard measuring block, the vernier caliper is aligned with the standard measuring block. Since the length of each standard measuring block is fixed, it is only necessary to read the value measured by the vernier caliper to determine whether the vernier caliper is accurate.

[0029] (2) The new type of internal clamping vernier caliper testing instrument uses a hydraulic cylinder to lift the movable plate. Then, by using the first plate and the second plate, the hardness tester can be connected and the hardness of the placed vernier caliper can be tested. In some daily use, workers will casually use the vernier caliper to hit objects such as nails. Therefore, testing the hardness of the vernier caliper can ensure that the vernier caliper will not be damaged. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0031] Figure 2 This is a schematic diagram of the main structure of the present invention;

[0032] Figure 3 This is a schematic diagram of the rear view structure of the present invention;

[0033] Figure 4 This is a top view of the cross-section of the support base of the present invention;

[0034] Figure 5 This is a schematic diagram of the standard measuring block structure from below, as shown in the invention.

[0035] Figure 6 This is a top view of the connection between the first and second flat plates of the present invention.

[0036] Figure 7 This is a top view of the cross-section of the caliper fixing component of the present invention;

[0037] Figure 8 This is a top view schematic diagram of the connection between the caliper fixing component and the support base of the present invention.

[0038] In the diagram: 1. Support base; 2. Lower end pad; 3. Support frame; 4. Turning handle; 5. Threaded rod; 6. Caliper fixing assembly; 61. Nut sleeve; 62. Mounting bracket; 63. Limiting plate; 64. Inner column; 65. Base plate; 66. Upper end pad; 67. Guide rod; 7. Standard measuring block; 71. Fixing block; 8. Pull plate; 9. Elastic pad; 10. Connecting plate; 11. Fixing buckle; 12. Connecting rod; 13. Fixing groove; 14. Hydraulic cylinder; 15. Movable plate; 16. Limiting frame; 17. First plate; 18. Second plate; 19. Connecting piece; 20. Detection needle; 21. Hardness tester. Detailed Implementation

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] like Figure 1-8 As shown, the present invention provides a technical solution: a novel internal clamping vernier caliper testing instrument, comprising a support base 1, a lower end pad 2 provided on the upper surface of the support base 1, a support frame 3 fixedly installed on the upper rear surface of the support base 1, caliper fixing components 6 provided on the left and right sides of the support frame 3, standard measuring blocks 7 provided inside and on the upper part of the support base 1, a plurality of fixing grooves 13 provided on the upper surface of the support base 1, the fixing grooves 13 being evenly distributed, and a hydraulic cylinder 14 installed on the upper surface of the middle rear side of the support base 1, the upper end of the hydraulic cylinder 14... A movable plate 15 is connected to the top. A limit frame 16 is provided at the connection between the middle of the movable plate 15 and the support frame 3. A first plate 17 is provided at the top of the upper end of the movable plate 15. A second plate 18 is provided on the outer side of the first plate 17. A detection needle 20 is provided on the inner side of the middle of the first plate 17 and the second plate 18. The top of the upper end of the detection needle 20 is connected to the hardness tester 21. This can fix the position of the vernier caliper and detect the numerical accuracy and hardness of the vernier caliper. It is also convenient for operators and improves the applicability of the device.

[0041] like Figure 1 and 8 The upper left and right sides of the support frame 3 are symmetrically provided with a handle 4. The inner end face of the handle 4 is connected to a threaded rod 5. The threaded rod 5 is located inside the left and right sides of the support frame 3. By rotating the handle 4, the handle 4 can drive the threaded rod 5 to rotate, thereby driving the caliper fixing component 6 to move, and the position of the caliper fixing component 6 can be adjusted and fixed.

[0042] like Figure 7The caliper fixing assembly 6 includes a nut sleeve 61, a mounting bracket 62, a limiting plate 63, an inner column 64, a base plate 65, an upper end pad 66, and a guide rod 67. The mounting bracket 62 is provided on the outer surface of the nut sleeve 61, and the limiting plate 63 is provided on the outer surface of the mounting bracket 62. The inner column 64 is installed in the middle of the mounting bracket 62, and the bottom of the lower end of the inner column 64 is connected to the base plate 65. The upper end pad 66 is provided on the lower surface of the base plate 65, and the guide rod 67 is provided on the upper surfaces of the left and right sides of the base plate 65. Because of the use of the caliper fixing assembly 6, the positions of both ends of the vernier caliper can be fixed to avoid shaking during the inspection process.

[0043] like Figure 1 and 2 The limiting plate 63 and the mounting bracket 62 are connected to each other by fixing screws. The inner end of the limiting plate 63 is nested with the inner column 64. The inner column 64 and the mounting bracket 62 form a lifting structure. By using the limiting plate 63, the height of the inner column 64 can be fixed, and then the position of the base plate 65 can be fixed, thereby completing the fixation of the position of the vernier caliper.

[0044] like Figure 5 Several standard measuring blocks 7 are provided, each with a different length. Fixed blocks 71 are evenly distributed on the lower surface of the standard measuring blocks 7. By using the standard measuring blocks 7, the standard measuring blocks 7 can be replaced according to one's own needs, which is convenient for operators to perform multiple tests.

[0045] like Figure 4 The inner end of the fixing groove 13 is connected to the fixing buckle 11. The fixing buckle 11 is distributed on the surface of the connecting plate 10. The connecting plates 10 are connected by the connecting rod 12. The outermost connecting plate 10 is connected to the pull plate 8. An elastic pad 9 is provided between the outermost connecting plate 10 and the support base 1. Pulling or squeezing the pull plate 8 can drive the connecting plate 10 to slide, and then the fixing buckle 11 can slide, thereby completing the replacement of the standard measuring block 7.

[0046] like Figure 4 The connecting plate 10 and the fixing buckle 11 are integrated structures. The connecting plate 10 forms a sliding structure through the pull plate 8 and an elastic structure through the elastic pad 9. When the device is in use, the elastic pad 9 can squeeze the connecting plate 10, thereby causing the connecting plate 10 to drive the fixing buckle 11 to fix the position of the standard measuring block 7.

[0047] like Figure 3The movable plate 15 and the limiting frame 16 are connected in a nested manner. The movable plate 15 forms a lifting structure through the hydraulic cylinder 14. The upper movable plate 15 can be lifted and lowered by the use of the hydraulic cylinder 14, while the lifting and lowering direction of the movable plate 15 can be fixed by the use of the limiting frame 16.

[0048] like Figure 6 The first plate 17 and the second plate 18 are connected to each other by a connecting piece 19. The first plate 17 and the second plate 18 form a disassembly and installation structure by the connecting piece 19. The first plate 17 and the second plate 18 are fixed to the connecting piece 19 by fixing screws. Using the connecting piece 19, the first plate 17 and the second plate 18 can be separated, and then the hardness tester 21 can be disassembled and replaced.

[0049] When using it, first take out a standard measuring block 7, then... Figure 4 As shown, pull the right end of the pull plate 8 to the right, and then the pull plate 8 can drive the connected connecting plate 10 to move to the right. Then the connecting plate 10 drives the fixing buckle 11 to move to the right, so that the fixing buckle 11 and the fixing groove 13 are separated. Press the left end of the pull plate 8 to the right, and it can drive the connected connecting plate 10 to move to the right, so that the fixing buckle 11 and the fixing groove 13 are separated. Then the standard measuring block 7 can be placed on the upper surface of the support base 1, and the fixing block 71 is inserted into the inside of the fixing groove 13. Then, under the action of the elastic pad 9, the fixing buckle 11 is driven to move in the opposite direction, thereby completing the connection of the fixing block 71 and thus completing the fixing of the standard measuring block 7.

[0050] Next, connect and fix the vernier caliper to the device. Place the vernier caliper on the upper part of the lower pad 2, and make the inside of one end of the vernier caliper fit against the surface of the standard measuring block 7. Then, rotate the handle 4 according to the position of the vernier caliper. The handle 4 drives the threaded rod 5 to rotate, and the threaded rod 5 can drive the nut sleeve 61 to move left and right. Then, the mounting bracket 62 can be moved left and right. Then, by pressing the inner column 64 downward, the base plate 65 can be moved downward, so that the upper pad 66 can squeeze the two ends of the vernier caliper. And use the limiting plate 63 to fix the inner column 64, thereby fixing the base plate 65.

[0051] Next, slide the auxiliary scale of the vernier caliper to test the standard measuring block 7. When the measured value is the same as the value of the standard measuring block 7, it can be proved that the accuracy of the vernier caliper is qualified. By replacing the standard measuring block 7, different length values ​​of the vernier caliper can be tested, thus completing the test of the vernier caliper.

[0052] Then, the hydraulic cylinder 14 drives the movable plate 15 to move downward. The use of the limit frame 16 can fix the lifting direction of the movable plate 15. Then, the descent of the movable plate 15 drives the first plate 17 to move downward. The connecting piece 19 fixes the position of the second plate 18, which can fix the internal detection needle 20 and hardness tester 21. Then, the detection needle 20 contacts the vernier caliper to complete the measurement of the hardness of the vernier caliper, and the value is read by the hardness tester 21. The hardness tester 21 is model LX-A-1. This is the usage process of the new type of internal clamping vernier caliper. At the same time, the contents not described in detail in this specification are all existing technologies known to those skilled in the art.

[0053] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0054] 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 new type of detector for inside clamping vernier caliper, comprising a support seat (1), characterized in that: The upper surface of the support seat (1) is provided with a lower end pad (2), the upper surface of the rear end of the support seat (1) is fixedly provided with a support frame (3), the left and right outer sides of the support frame (3) are provided with caliper fixing assemblies (6), the inside and upper part of the support seat (1) are provided with standard measuring blocks (7), the upper surface of the support seat (1) is provided with a plurality of fixed grooves (13), the fixed grooves (13) are uniformly distributed, the upper surface of the middle part of the rear side of the support seat (1) is provided with a hydraulic cylinder (14), the upper end top of the hydraulic cylinder (14) is connected with a movable plate (15), the middle part of the movable plate (15) is provided with a limiting frame (16) at the connecting part with the support frame (3), the upper end top of the movable plate (15) is provided with a first flat plate (17), the outer side of the first flat plate (17) is provided with a second flat plate (18), the middle inner sides of the first flat plate (17) and the second flat plate (18) are provided with detection needles (20), the upper end top of the detection needles (20) is connected with a hardness detector (21). The inner end of the fixed groove (13) is connected with the fixed buckle (11), the fixed buckles (11) are distributed on the surface of the connecting plate (10), the connecting plates (10) are connected through the connecting rods (12), the outermost connecting plate (10) is connected with the pull plate (8), and the elastic pads (9) are arranged between the outermost connecting plate (10) and the support seat (1).

2. A novel detector of inside clamping vernier caliper according to claim 1, wherein: The upper ends of the left and right sides of the support frame (3) are symmetrically provided with rotating handles (4), the inner end faces of the rotating handles (4) are connected with threaded rods (5), and the threaded rods (5) are arranged in the left and right inner sides of the support frame (3).

3. A novel detector for internal clamping vernier caliper as claimed in claim 1, wherein: The caliper fixing assembly (6) comprises a nut sleeve (61), a mounting frame (62), a limiting clamping plate (63), an inner column (64), a bottom plate (65), an upper end pad (66) and a guide rod (67), the outer surface of the nut sleeve (61) is provided with the mounting frame (62), the outer side surface of the mounting frame (62) is provided with the limiting clamping plate (63), the middle part of the mounting frame (62) is provided with the inner column (64), the lower end bottom of the inner column (64) is connected with the bottom plate (65), the lower side surface of the bottom plate (65) is provided with the upper end pad (66), and the left and right side upper surfaces of the bottom plate (65) are provided with the guide rods (67).

4. A novel detector for internal clamping vernier caliper as claimed in claim 3, wherein: The limiting clamping plate (63) and the mounting frame (62) are connected with each other through fixing screws, the inner end of the limiting clamping plate (63) is connected with the inner column (64) in a nested mode, and the inner column (64) and the mounting frame (62) form a lifting structure.

5. A novel detector for internal clamping vernier caliper as claimed in claim 1, wherein: A plurality of standard measuring blocks (7) are arranged, the lengths of the standard measuring blocks (7) are different, and the lower side surfaces of the standard measuring blocks (7) are uniformly distributed with fixed blocks (71).

6. A novel detector for internal clamping vernier caliper as claimed in claim 1, wherein: The connecting plate (10) and the fixed buckle (11) are integrated structures, the connecting plate (10) forms a sliding structure through the pull plate (8), and the connecting plate (10) forms an elastic structure through the elastic pad (9).

7. A novel detector for internal clamping vernier caliper as claimed in claim 1, wherein: The connecting mode of the movable plate (15) and the limiting frame (16) is nested connection, and the movable plate (15) constitutes a lifting structure through the hydraulic cylinder (14).

8. A novel detector for internal clamping vernier caliper as claimed in claim 1, wherein: The first flat plate (17) and the second flat plate (18) are connected with each other through the connecting sheet (19), the first flat plate (17) and the second flat plate (18) constitute a dismounting and mounting structure through the connecting sheet (19), and the first flat plate (17), the second flat plate (18) and the connecting sheet (19) are fixed with each other through fixing screws.

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