Universal caliper calibrating device

Abstract

The utility model provides a universal caliper calibrating device, and belongs to the technical field of caliper calibration. The device comprises a verification frame, a plurality of stop blocks and a clamping mechanism, the verification frame is provided with a groove, the plurality of stop blocks are slidably arranged in the groove, the upper ends of the stop blocks extend out of the upper side surface of the verification frame, a gauge block is clamped between two adjacent stop blocks, the clamping mechanism is designed on the verification frame, and the clamping mechanism is arranged on the verification frame. And the clamping mechanism can clamp the plurality of stop blocks in the groove at the same time. According to the utility model, a plurality of separated gauge blocks can be arranged on the calibration frame at the same time, so that the caliper can be quickly calibrated for multiple times, and the calibration requirements of the inner size and the outer size of the caliper can be met at the same time.

Description

Technical Field

[0001] The utility model belongs to the technical field of caliper calibration, and relates to a universal caliper calibration device. Background Art

[0002] Universal calipers are widely used in factories and businesses. They are legally regulated measuring instruments. However, machining and assembly errors during manufacturing, as well as wear on the measuring surfaces during use, can lead to measurement errors, directly impacting the accuracy of mechanical products. Therefore, regular calibration of universal calipers is necessary to ensure their accuracy.

[0003] Standard gauge blocks are high-precision physical measuring instruments. Currently, they are commonly used for universal caliper measurements. Existing calibration devices can only accommodate one standard block at a time. To ensure measurement accuracy, multiple standard blocks must be replaced to measure multiple data sets, and then calibrated sequentially, resulting in a cumbersome operation. Furthermore, the specialized gauge blocks currently used for universal calipers only measure external dimensions, not internal dimensions, making them unsuitable for use as internal measurement standards for the inner jaws of a caliper blade. Summary of the Invention

[0004] The purpose of the present invention is to address the above-mentioned problems in the existing technology and propose a universal caliper calibration device. The present invention can simultaneously set multiple separated gauge blocks on the calibration frame, which can quickly perform multiple calibrations on the caliper and can also meet the calibration requirements of the inner and outer dimensions of the caliper.

[0005] The purpose of this utility model can be achieved through the following technical solutions:

[0006] A universal caliper calibration device comprises: a calibration frame, wherein a groove is formed on the calibration frame;

[0007] A plurality of stoppers, wherein the plurality of stoppers are slidably arranged in the grooves, the upper ends of the stoppers extend out of the upper side surface of the calibration frame, and a gauge block is sandwiched between two adjacent stoppers;

[0008] The clamping mechanism is designed on the calibration frame and can clamp several blocks in the groove at the same time.

[0009] Preferably, the clamping mechanism comprises:

[0010] a push plate, the push plate being slidably disposed in the groove;

[0011] A guide rod, the guide rod is horizontally inserted on the side of the calibration frame away from the push plate, the inner end of the guide rod extends into the groove and the end is fixedly connected to the push plate, and a plurality of the stoppers are inserted on the guide rod at one time;

[0012] A fixing structure is provided on the calibration frame and can fix the guide rod.

[0013] Preferably, the fixing structure comprises:

[0014] External thread, a through hole is opened in the calibration frame, the guide rod is inserted in the through hole, a sealing plate is fixed to the outer end of the guide rod, a limiting convex edge is provided on the guide rod located in the through hole, and the external thread is provided on the guide rod between the sealing plate and the limiting convex edge;

[0015] The fixing nut is rotatably arranged on the calibration frame and is threadedly connected to the guide rod through an external thread.

[0016] Preferably, first sliding grooves are symmetrically provided on both side walls of the groove along the length direction, and first sliders are symmetrically provided on both sides of the push plate. The two first sliders correspond to the two first sliding grooves one by one, and the first sliders are slidably provided in the corresponding first sliding grooves.

[0017] Preferably, the clamping mechanism includes several clamping assemblies, and the several clamping assemblies are respectively arranged on corresponding stop blocks. The clamping assembly includes a fixing bolt, and the fixing bolt is threadedly connected to the stop block. A limiting groove is opened at the bottom of the groove along the length direction. The lower end of the fixing bolt passes through the stop block and extends into the limiting groove, and a clamping block is rotatably provided at the end. The clamping block is rectangular and matches the width of the limiting groove.

[0018] Preferably, second sliding grooves are provided on both side walls of the groove, and second sliding blocks are provided on both side surfaces of the stopper, and the second sliding blocks are slidably arranged in the corresponding second sliding grooves.

[0019] Preferably, a compression strip is provided at the bottom of the limiting groove along the length direction, a V-shaped protrusion is provided on the upper side of the compression strip, and a V-shaped groove is provided on the lower side of the compression block. When the fixing bolt is rotated downward, there is at least one position where the V-shaped groove fits with the V-shaped protrusion.

[0020] Preferably, one side of the groove passes through one end of the calibration frame.

[0021] Preferably, both sides of the gauge block in the width direction exceed the two side surfaces of the stop block.

[0022] Compared with the prior art, the utility model has the following advantages:

[0023] 1. Place gauge blocks of different lengths between two adjacent blocks, and then use the clamping mechanism to clamp all the blocks at the same time. At this time, multiple gauge blocks of different lengths are set on the calibration rack at the same time. Using a universal caliper, multiple sets of data can be quickly measured, eliminating the trouble of frequently changing gauge blocks and greatly improving calibration efficiency and accuracy.

[0024] 2. Since all the blocks are inserted into the guide rod and the lower end of the block extends into the groove, the block can only move along the groove and will not rotate. At this time, turn the fixing nut to move the guide rod outward, and the push plate pushes all the blocks toward the fixing nut, finally clamping all the inserted gauge blocks. The operation is simple.

[0025] 3. First, use the inner jaws of the universal caliper to measure the distance between the two blocks. Since the two sides of the gauge block extend out of the two sides of the block, and then use the outer jaws of the universal caliper to measure the size of the gauge block between the two blocks, this device can simultaneously perform indication error calibration on the outer and inner jaws of the universal caliper, and the calibration efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural diagram of the first embodiment;

[0027] Figure 2 yes Figure 1 Cross-sectional view at AA in the middle;

[0028] Figure 3 yes Figure 2 Cross-sectional view at the middle BB;

[0029] Figure 4 yes Figure 2 Cross-sectional view at CC;

[0030] Figure 5 yes Figure 2 Cross-sectional view at DD in the middle;

[0031] Figure 6 It is a structural diagram of embodiment 2;

[0032] Figure 7 yes Figure 6 Cross-sectional view at EE.

[0033] In the figure: 1. Calibration frame; 11. Groove; 12. Limiting groove; 13. Perforation; 14. First slide groove; 2. Stop block; 3. Gauge block; 4. Push plate; 41. First slider; 5. Guide rod; 51. Closing plate; 52. External thread; 53. Limiting ridge; 6. Fixing nut; 7. Pressing strip; 71. V-shaped protrusion; 8. Fixing bolt; 81. Pressing block; 82. V-shaped groove; 9. Second slider; 91. Second slide groove. DETAILED DESCRIPTION

[0034] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments. Example 1

[0035] like Figure 1-5 As shown, a universal caliper calibration device includes a calibration frame 1, a plurality of blocks 2 and a clamping mechanism.

[0036] The calibration frame 1 is provided with a groove 11 , and the groove 11 passes through one end of the calibration frame 1 .

[0037] Several of the stoppers 2 are slidably arranged in the groove 11. The upper ends of the stoppers 2 extend out of the upper side of the calibration frame 1. Gauge blocks 3 are sandwiched between two adjacent stoppers 2. The gauge blocks 3 are standard gauge blocks of different lengths.

[0038] The clamping mechanism includes a push plate 4, a guide rod 5 and a fixing structure.

[0039] The two side walls of the groove 11 are symmetrically provided with first sliding grooves 14 along the length direction, and the two sides of the push plate 4 are symmetrically provided with first sliding blocks 41 . The push plate 4 is slidably provided in the first sliding grooves 14 corresponding to the groove 11 through the first sliding blocks 41 .

[0040] A through hole 13 is provided at one end of the calibration frame 1, and the through hole 13 passes through the groove 11. The guide rod 5 is horizontally inserted in the through hole 13. The inner end of the guide rod 5 extends into the groove 11 and the end is fixedly connected to the push plate 4. Several of the stoppers 2 are inserted on the guide rod 5 at one time.

[0041] The fixing structure is provided on the calibration frame 1 , and the fixing structure can fix the guide rod 5 .

[0042] Gauge blocks 3 of different lengths are placed between two adjacent stop blocks 2 respectively, and then all the stop blocks 2 are clamped at the same time using a clamping mechanism. At this time, multiple gauge blocks 3 of different lengths are simultaneously arranged on the calibration frame 1. A universal caliper can be used to quickly measure multiple sets of data, eliminating the trouble of frequently replacing gauge blocks 3, greatly improving the calibration efficiency and calibration accuracy; in addition, the inner jaws of the universal caliper are used to measure the distance between the two stop blocks 2, and then the outer jaws of the universal caliper are used to measure the size of the gauge block between the two stop blocks 2. This device can simultaneously perform indication error calibration on the outer jaws and inner jaws of the universal caliper, and the calibration efficiency is high.

[0043] In this embodiment, the fixing structure includes an external thread 52 and a fixing nut 6 .

[0044] The outer end of the guide rod 5 extending out of the calibration frame 1 is fixed with a sealing plate 51 , and the guide rod 5 located in the through hole 13 is provided with a limiting ridge 53 , and the external thread 52 is provided on the guide rod 5 between the sealing plate 51 and the limiting ridge 53 .

[0045] The fixing nut 6 is rotatably mounted on the calibration frame 1 , and the fixing nut 6 is threadedly connected to the guide rod 5 via an external thread 52 .

[0046] Since all the blocks 2 are inserted into the guide rod 5 and the lower end of the block 2 extends into the groove 11, the block 2 can only move along the groove 11 and will not rotate. By rotating the fixing nut 6, the guide rod 5 is driven to move horizontally in the groove 11, thereby driving the block 2 to move in the groove 11, clamping the gauge block 3 between two adjacent blocks 2. It is suitable for gauge blocks 3 of different lengths and is easy to operate.

[0047] Preferably, first sliding grooves 14 are symmetrically formed on both side walls of the groove 11 along the length direction, and first sliders 41 are symmetrically provided on both sides of the push plate 4. The two first sliders 41 correspond to the two first sliding grooves 14 one by one, and the first sliders 41 are slidably arranged in the corresponding first sliding grooves 14. The first sliders 41 on the push plate limit the sliding range of the push plate 4 and ensure that it does not rotate.

[0048] Preferably, both sides of the gauge block 3 in the width direction extend beyond the two side surfaces of the stop block 2. When the gauge block 3 is clamped in the middle by the two stop blocks 2, both sides of the gauge block 3 in the width direction extend out of the two sides of the stop block 2, making it convenient for the outer measuring jaws of the universal caliper to measure the size of the gauge block 3 between the two stop blocks 2. Example 2

[0049] like Figure 6-7 As shown, the clamping mechanism includes several clamping components, and several of the clamping components are respectively arranged on the corresponding stop block 2. The clamping component includes a fixing bolt 8, and the fixing bolt 8 is threadedly connected to the stop block 2. The bottom of the groove 11 is provided with a limiting groove 12 along the length direction. The lower end of the fixing bolt 8 passes through the stop block 2 and extends into the limiting groove 12, and a clamping block 81 is rotatably provided at the end. The clamping block 81 is rectangular and matches the width of the limiting groove 12. When the fixing bolt 8 rotates, the clamping block 81 is restricted by the limiting groove 12 and will not rotate, but can only move up and down.

[0050] By adjusting the position of the stopper 2, the gauge block 3 between the stoppers 2 is clamped, and then the fixing screw 6 is turned to move the clamping block 81 downward, contacting and pressing the bottom of the limit groove 12, and fixing the stopper 2 in the current position, which is convenient for controlling the stopper 2 individually. When one of the gauge blocks 3 needs to be replaced, the stoppers 2 on both sides of the gauge block 3 can be adjusted individually, which is simple to operate.

[0051] In this embodiment, second slide grooves 91 are formed on both side walls of the groove 11, and second sliders 9 are provided on both side surfaces of the stopper 2. The second sliders 9 are slidably disposed within the corresponding second slide grooves 91. Preferably, the second slide grooves 91 extend through the side walls of the groove 11. The second sliders 9 on the stopper 2 can limit the sliding range of the stopper 2, ensuring that it does not rotate. At the same time, the stopper 2 can slide out of the groove 11. The number of stoppers 2 can be increased according to the number of measuring blocks 3 required.

[0052] In this embodiment, a clamping strip 7 is provided at the bottom of the limiting groove 12 along the length direction, a V-shaped protrusion 71 is provided on the upper side of the clamping strip 7, and a V-shaped groove 82 is provided on the lower side of the clamping block 81. When the fixing bolt 8 is rotated downward, there is at least one position where the V-shaped groove 82 fits with the V-shaped protrusion 71.

[0053] The V-shaped groove 82 of the pressing block 81 contacts the V-shaped protrusion 71 on the pressing strip 7, which increases the contact area between the two, increases the friction force, and makes the fixation more firm.

Claims

1. A universal caliper calibration device, characterized in that: include: A calibration frame (1), wherein a groove (11) is provided on the calibration frame (1); A plurality of stoppers (2), wherein the plurality of stoppers (2) are slidably arranged in the groove (11), the upper ends of the stoppers (2) extend out of the upper side surface of the calibration frame (1), and a gauge block (3) is sandwiched between two adjacent stoppers (2); A clamping mechanism is designed on a calibration frame (1), and the clamping mechanism can simultaneously clamp a plurality of stoppers (2) in the groove (11).

2. A universal caliper calibration device according to claim 1, characterized in that: The clamping mechanism comprises: A push plate (4), wherein the push plate (4) is slidably disposed in the groove (11); A guide rod (5), the guide rod (5) is horizontally inserted on a side of the calibration frame (1) away from the push plate (4), the inner end of the guide rod (5) extends into the groove (11) and the end is fixedly connected to the push plate (4), and a plurality of the stoppers (2) are inserted on the guide rod (5) at one time; A fixing structure is provided on the calibration frame (1), and the fixing structure is capable of fixing the guide rod (5).

3. A universal caliper calibration device according to claim 2, characterized in that: The fixed structure includes: External thread (52), a through hole (13) is provided in the calibration frame (1), the guide rod (5) is inserted in the through hole (13), a sealing plate (51) is fixed to the outer end of the guide rod (5), a limiting convex edge (53) is provided on the guide rod (5) located in the through hole (13), and the external thread (52) is provided on the guide rod (5) between the sealing plate (51) and the limiting convex edge (53); A fixing nut (6) is rotatably mounted on the calibration frame (1), and the fixing nut (6) is threadably connected to the guide rod (5) via an external thread (52).

4. A universal caliper calibration device according to claim 2, characterized in that: The two side walls of the groove (11) are symmetrically provided with first sliding grooves (14) along the length direction, and the two sides of the push plate (4) are symmetrically provided with first sliding blocks (41), the two first sliding blocks (41) and the two first sliding grooves (14) correspond one to one, and the first sliding blocks (41) are slidably provided in the corresponding first sliding grooves (14).

5. The universal caliper calibration device according to claim 1, characterized in that: The clamping mechanism includes a plurality of clamping assemblies, and the plurality of clamping assemblies are respectively arranged on corresponding blocks (2). The clamping assembly includes a fixing bolt (8), and the fixing bolt (8) is threadedly connected to the block (2). A limiting groove (12) is provided at the bottom of the groove (11) along the length direction. The lower end of the fixing bolt (8) passes through the block (2) and extends into the limiting groove (12), and a pressing block (81) is rotatably provided at the end thereof. The pressing block (81) is rectangular and matches the width of the limiting groove (12).

6. A universal caliper calibration device according to claim 5, characterized in that: Second sliding grooves (91) are provided on both side walls of the groove (11), and second sliding blocks (9) are provided on both side surfaces of the stopper (2). The second sliding blocks (9) are slidably arranged in the corresponding second sliding grooves (91).

7. A universal caliper calibration device according to claim 6, characterized in that: A pressing strip (7) is provided at the bottom of the limiting groove (12) along the length direction, a V-shaped protrusion (71) is provided on the upper side of the pressing strip (7), and a V-shaped groove (82) is provided on the lower side of the pressing block (81). When the fixing bolt (8) is rotated downward, there is at least one position where the V-shaped groove (82) fits with the V-shaped protrusion (71).

8. The universal caliper calibration device according to claim 1, characterized in that: One side of the groove (11) passes through one end of the calibration frame (1).

9. The universal caliper calibration device according to claim 1, characterized in that: Both sides of the gauge block (3) in the width direction extend beyond the two side surfaces of the stop block (2).

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