Thickness detection assembly with pneumatic clamping function

Abstract

The utility model provides a thickness detection assembly with a pneumatic clamping function, and belongs to the technical field of measuring devices. The device comprises a detection installation support, a detection bottom plate is arranged on the detection installation support, a first detection plate and a second detection plate are arranged on the detection bottom plate, clamping pieces are arranged on the opposite sides of the first detection plate and the second detection plate respectively, and a workpiece is arranged between the two clamping pieces. A clamping driving mechanism capable of driving the first detection plate and the second detection plate to move oppositely to enable the workpiece to be clamped by the two clamping pieces is arranged between the first detection plate and the detection bottom plate and between the second detection plate and the detection bottom plate, and a linear displacement sensing assembly is arranged between the first detection plate and the second detection plate. The device can provide stable and uniform clamping force, guarantees the stability of a workpiece in a measurement process, effectively avoids the influence of the conditions of uneven bottom surface, hollowing and the like of the workpiece on a measurement result, and improves the measurement accuracy. The thickness size of the workpiece can be accurately calculated through the reading change of the linear displacement sensing assembly before and after the workpiece is clamped.

Description

TECHNICAL FIELD

[0001] The utility model belongs to measuring device technical field relates to a kind of thickness detection components with pneumatic clamping. BACKGROUND

[0002] Workpiece is ground on cylindrical grinder after grinding processing, and its thickness size needs to reach certain accuracy requirement. Therefore, workpiece needs to be detected in thickness, and size deviation possibly occurred in grinding process of workpiece can be found in time, so as to ensure that the size accuracy of workpiece meets design requirement. This has important significance for ensuring the assembly accuracy, use performance and overall quality of workpiece. However, the existing thickness detection method mostly uses single-face collision detection, when workpiece exists hollow or workpiece bottom surface exists unevenness, depression or protrusion, single-face collision detection mode cannot accurately reflect the real thickness of workpiece, resulting in inaccurate reading. SUMMARY

[0003] The utility model aims at above -mentioned problem, provide a kind of thickness detection components with pneumatic clamping.

[0004] To achieve the above object, the utility model adopts the following technical scheme:

[0005] A kind of thickness detection components with pneumatic clamping, including detection installation support, the detection installation support is equipped with detection base plate, the detection base plate is equipped with first detection plate and second detection plate, and clamping piece is respectively arranged on the opposite side of first detection plate and second detection plate, workpiece is arranged between two clamping pieces, first detection plate and second detection plate are equipped with clamping drive mechanism between detection base plate, the clamping drive mechanism can drive first detection plate and second detection plate to be displaced towards each other so that workpiece is clamped by two clamping pieces, linear displacement sensing component is arranged between first detection plate and second detection plate.

[0006] Two clamping pieces can be displaced towards each other and act on the two end faces of workpiece respectively, provide stable and uniform clamping force, ensure that workpiece does not produce position deviation due to vibration or external force during measurement, ensure the stability of workpiece during measurement, effectively avoid the influence of uneven workpiece bottom surface, hollow and the like on measurement result, so as to improve the accuracy of measurement. The reading change of linear displacement sensing component before and after workpiece clamping can accurately calculate the thickness size of workpiece, improve the accuracy of measurement.

[0007] In the thickness detection assembly with pneumatic clamping, the clamping driving mechanism comprises at least one sliding rail arranged on the detection base plate, the sliding rail is distributed along the length direction of the detection base plate, the first detection plate and the second detection plate are respectively slidably connected to the sliding rail through sliding blocks, and the first detection plate and the second detection plate are provided with a sliding driving structure capable of driving the first detection plate and the second detection plate to slide towards each other on the sliding rail.

[0008] The sliding driving structure can drive the first detection plate and the second detection plate to slide towards each other on the sliding rail, so that the two clamping members are displaced towards each other to clamp the workpiece. The displacement of the two clamping members towards each other can act on the two end faces of the workpiece to provide stable and uniform clamping force, ensure the stability of the workpiece during measurement, effectively avoid the influence of the uneven bottom surface and hollow of the workpiece on the measurement result, and improve the accuracy of measurement.

[0009] In the thickness detection assembly with pneumatic clamping, the sliding driving structure comprises a driving cylinder arranged on the first detection plate, the output end of the driving cylinder is connected to the second detection plate through a driving connecting plate, the detection base plate is provided with a driving screw rod arranged along the length direction of the detection base plate, the screw nut of the driving screw rod is connected to the first detection plate, and the driving screw rod is connected with a screw rod driver.

[0010] The output end of the driving cylinder on the first detection plate is retracted through the driving connecting plate to apply a pulling force to the second detection plate directed to the first detection plate, so that the second detection plate slides towards the first detection plate. Meanwhile, the screw rod driver operates to drive the driving screw rod to rotate, and the driving screw rod rotates to drive the first detection plate to slide towards the second detection plate through the screw nut. The first detection plate and the second detection plate slide towards each other on the sliding rail to displace the two clamping members towards each other to clamp the workpiece.

[0011] In the thickness detection assembly with pneumatic clamping, the detection base plate is provided with a limiting block, and the first detection plate and the second detection plate are respectively provided with a limiting rod capable of cooperating with the corresponding side of the limiting block.

[0012] The limiting rod on the first detection plate or the second detection plate can cooperate with the limiting block to limit sliding and play a protection role.

[0013] In the thickness detection assembly with pneumatic clamping, the linear displacement sensing assembly comprises a detection mounting bracket arranged on the first detection plate, the detection mounting bracket is provided with a linear contact type measuring needle, and the linear contact type measuring needle is arranged along the movement direction of the driving connecting plate and contacts the driving connecting plate during detection.

[0014] At the beginning of detection, the first detection plate and the second detection plate are in the initial position, the linear contact probe is in contact with the driving connecting plate to read the initial reading, when the first detection plate and the second detection plate slide towards each other to displace the two clamps towards each other to clamp the workpiece, the linear contact probe linearly displaces along the surface of the driving connecting plate, and the actual distance is read after the workpiece is clamped, the thickness size of the workpiece can be accurately obtained by subtracting the actual reading from the initial reading, high-precision measurement can be performed, and stability is high.

[0015] In the thickness detection assembly with pneumatic clamping, the driving connecting plate is arranged on the side wall opposite to the first detection plate and the second detection plate, and a connecting rib is arranged between the side of the driving connecting plate close to the second detection plate and the second detection plate.

[0016] The connecting rib can increase the overall structural strength between the driving connecting plate and the second detection plate, and can increase the connection reliability therebetween.

[0017] In the thickness detection assembly with pneumatic clamping, two symmetrical slide rails are arranged on the detection base plate, slide blocks corresponding to the two slide rails are arranged on the end faces of the first detection plate and the second detection plate, and detection plate limiting seats are arranged on both sides of the detection base plate in the length direction.

[0018] The double slide rail slide blocks can disperse the load and reduce the influence of the eccentric moment on the slide blocks and the slide rails, thereby improving the stability of the system, and the detection plate limiting seats on both sides slide limit the first detection plate and the second detection plate.

[0019] In the thickness detection assembly with pneumatic clamping, the detection plate limiting seat is arranged in an L shape between the end heads of the two slide rails, and a nylon anti-collision block is arranged on the contact surface of the detection plate limiting seat.

[0020] The nylon anti-collision block is wear-resistant and impact-resistant, can protect the contact surface from being damaged, and can reduce noise and vibration.

[0021] In the thickness detection assembly with pneumatic clamping, the first detection plate and the second detection plate are respectively provided with a giving part on the opposite sides, and the clamping piece is arranged on the giving part.

[0022] The giving part can save space and play a giving role.

[0023] In the thickness detection assembly with pneumatic clamping, the clamping piece comprises a clamping rod, the clamping rod is arranged on the giving part and is detachably connected with the giving part, the giving part is provided with a threaded hole, and the clamping rod is screw-connected in the threaded hole.

[0024] The clamping rods are screwed in the threaded holes of the displacement parts, convenient to disassemble and assemble, the two clamping rods are displaced towards each other, and the clamping end faces of the two clamping rods act on the two end faces of the workpiece respectively, so that stable and uniform clamping force can be provided.

[0025] Compared with the prior art, the utility model has the advantages that: 1, two clamping pieces can provide stable and uniform clamping force, ensure the stability of the workpiece in the measuring process, effectively avoid the influence of the workpiece bottom surface uneven, hollowing and so on to the measuring result, thereby improve the accuracy of measurement. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is the overall structure schematic view provided by the utility model;

[0027] Figure 2 It is the front view provided by the utility model;

[0028] Figure 3 It is the side view provided by the utility model;

[0029] Figure 4 It is the structure schematic view of detection base plate.

[0030] In the drawing, detection mounting support 1, detection base plate 2, first detection plate 3, second detection plate 4, clamping piece 5, workpiece 6, clamping drive mechanism 7, linear displacement sensing assembly 8, slide rail 9, sliding block 10, sliding drive structure 11, drive cylinder 12, output end 13, drive connecting plate 14, linear contact type measuring needle 15, connecting rib 16, detection plate limiting seat 17, nylon anti-collision block 18, displacement part 19, clamping rod 20, limiting stop block 21, limiting rod 22. DETAILED DESCRIPTION

[0031] As Figures 1-4 Indicated, a kind of thickness detection assembly with pneumatic clamping, including detection mounting support 1, detection mounting support 1 is equipped with detection base plate 2, detection base plate 2 is equipped with first detection plate 3 and second detection plate 4, first detection plate 3 and second detection plate 4 are respectively equipped with clamping piece 5 on the opposite side, workpiece 6 is arranged between two clamping pieces 5, first detection plate 3 and second detection plate 4 are equipped with the clamping drive mechanism 7 of being able to drive first detection plate 3 and second detection plate 4 displacement towards so that workpiece 6 is clamped by two clamping pieces 5 between detection base plate 2, first detection plate 3 and second detection plate 4 are equipped with linear displacement sensing assembly 8.

[0032] The utility model discloses a workpiece 6 carries out thickness detection, places workpiece 6 between two clamping pieces 5, and first detection plate 3 and second detection plate 4 can be driven to the displacement of first detection plate 3 and second detection plate 4 by clamping drive mechanism 7 and make two clamping pieces 5 the displacement of workpiece 6 clamping, linear displacement sensing assembly 8 first reads the initial distance between first detection plate 3 and second detection plate 4 when first detection plate 3 and second detection plate 4 are in initial position, and reads the actual distance between first detection plate 3 and second detection plate 4 after two clamping pieces 5 clamp workpiece 6, and the thickness size of workpiece 6 is accurately obtained by the initial reading minus actual reading.

[0033] The displacement of two clamping pieces 5 can act on the two end faces of workpiece 6 respectively, provide stable and uniform clamping force, ensure that workpiece 6 does not produce position deviation in the measuring process due to vibration or external force, ensure the stability of workpiece 6 in the measuring process, effectively avoid the influence of workpiece 6 bottom uneven, hollow drum and other conditions on the measuring result, thereby improve the accuracy of measurement, the thickness size of workpiece 6 can be accurately calculated through the reading change of linear displacement sensing assembly 8 before and after workpiece 6 clamping, improve the accuracy of measurement.

[0034] Specifically, combining Figures 1-4 As shown in the figure, clamping drive mechanism 7 includes at least one slide rail 9 arranged on detection base plate 2, slide rail 9 is distributed along the length direction of detection base plate 2, first detection plate 3 and second detection plate 4 are slidably connected on slide rail 9 through slide block 10 respectively, and slide driving structure 11 that can drive first detection plate 3 and second detection plate 4 to slide on slide rail 9 oppositely is arranged between first detection plate 3 and second detection plate 4.

[0035] Slide driving structure 11 can drive first detection plate 3 and second detection plate 4 to slide on slide rail 9 oppositely and make two clamping pieces 5 the displacement of workpiece 6 clamping, and the displacement of two clamping pieces 5 can act on the two end faces of workpiece 6, provide stable and uniform clamping force, ensure the stability of workpiece 6 in the measuring process, effectively avoid the influence of workpiece 6 bottom uneven, hollow drum and other conditions on the measuring result, thereby improve the accuracy of measurement.

[0036] Specifically, combining Figures 1-4 As shown in the figure, slide driving structure 11 includes drive cylinder 12 arranged on first detection plate 3, the output end 13 of drive cylinder 12 is connected with second detection plate 4 through drive connecting plate 14, drive screw rod is arranged on detection base plate 2 along the length direction of detection base plate 2, the screw nut of drive screw rod is connected with first detection plate 3, and screw rod driver is connected with drive screw rod.

[0037] The output end 13 of the driving cylinder 12 on the first detection plate 3 can apply a pulling force to the second detection plate 4 by retracting through the driving connecting plate 14, so that the second detection plate 4 slides towards the first detection plate 3, and meanwhile the screw rod driver drives the driving screw rod to rotate, which can drive the first detection plate 3 to slide towards the second detection plate 4 through the screw nut, so that the first detection plate 3 and the second detection plate 4 slide towards each other on the slide rail 9, and the two clamping pieces 5 are displaced towards each other to clamp the workpiece 6.

[0038] Specifically, as shown in Figures 1-4 The first detection plate 3 and the second detection plate 4 are respectively provided with a limiting rod 22 corresponding to the side of the limiting block 21.

[0039] The limiting rod 22 on the first detection plate 3 or the second detection plate 4 can cooperate with the limiting block 21 to limit sliding and play a protective role.

[0040] Specifically, as shown in Figures 1-4 The linear displacement sensing assembly 8 includes a detection mounting bracket 1 arranged on the first detection plate 3, and the detection mounting bracket 1 is provided with a linear contact probe 15 arranged along the moving direction of the driving connecting plate 14 and in contact with the driving connecting plate 14 during detection.

[0041] At the beginning of detection, the first detection plate 3 and the second detection plate 4 are in the initial position, the linear contact probe 15 is in contact with the driving connecting plate 14 to read the initial reading, when the first detection plate 3 and the second detection plate 4 slide towards each other to displace the two clamping pieces 5 towards each other to clamp the workpiece 6, the linear contact probe 15 linearly displaces along the surface of the driving connecting plate 14, and reads the actual distance after the workpiece 6 is clamped, and the thickness size of the workpiece 6 can be accurately obtained by subtracting the actual reading from the initial reading, so that high-precision measurement can be performed with strong stability.

[0042] The linear contact probe 15 is a prior art and will not be further described in detail.

[0043] Preferably, as shown in Figure 1 and Figure 4 The driving connecting plate 14 is arranged on the side wall opposite to the first detection plate 3 of the second detection plate 4, and the connecting rib 16 is further arranged between the side of the driving connecting plate 14 close to the second detection plate 4 and the second detection plate 4.

[0044] The output end 13 of the driving cylinder 12 is connected with the second detection plate 4 through the driving connecting plate 14, and the connecting rib 16 between the driving connecting plate 14 and the second detection plate 4 can increase the overall structural strength between the driving connecting plate 14 and the second detection plate 4, and can increase the connection reliability therebetween.

[0045] Preferably, in combination with Figure 1 , Figure 2 and Figure 4 As shown in the drawings, two slide rails 9 are symmetrically arranged on the detection base plate 2, and the end faces of the first detection plate 3 and the second detection plate 4 correspondingly are provided with sliding blocks 10 that are in sliding cooperation with the two slide rails 9. Detection plate limiting seats 17 are arranged on both sides of the detection base plate 2 in the length direction, and the detection plate limiting seats 17 are L-shaped and arranged between the end heads of the two slide rails 9. Nylon anti-collision blocks 18 are arranged on the contact surfaces of the detection plate limiting seats 17.

[0046] The first detection plate 3 and the second detection plate 4 are respectively connected by the sliding cooperation between the two sliding blocks 10 and the two slide rails 9. The double slide rails 9 and the sliding blocks 10 can disperse the load and reduce the influence of the eccentric moment on the sliding blocks 10 and the slide rails 9, thereby improving the stability of the system. The detection plate limiting seats 17 on both sides of the detection base plate 2 respectively play a sliding limiting role for the first detection plate 3 and the second detection plate 4.

[0047] The nylon anti-collision blocks 18 on the contact surfaces of the detection plate limiting seats 17 are wear-resistant and impact-resistant, which can protect the contact surfaces from being damaged, reduce noise and vibration.

[0048] Specifically, in combination with Figure 1 , Figure 2 and Figure 4 As shown in the drawings, the opposite sides of the first detection plate 3 and the second detection plate 4 are respectively provided with a yielding part 19, and the clamping piece 5 is arranged on the yielding part 19. The clamping piece 5 includes a clamping rod 20, which is arranged on the yielding part 19 and is detachably connected with the yielding part 19. The yielding part 19 is provided with a threaded hole, and the clamping rod 20 is screw-connected in the threaded hole.

[0049] The yielding parts 19 on the opposite sides of the first detection plate 3 and the second detection plate 4 can save space and play a yielding role. The clamping rod 20 is screw-connected in the threaded hole on the yielding part 19, which is convenient to disassemble and assemble. The clamping ends of the two clamping rods 20 respectively act on the two end faces of the workpiece 6, which can provide stable and uniform clamping force.

[0050] The utility model discloses a work principle is: at the detection beginning, first detection board 3 and second detection board 4 are at initial position, and workpiece 6 is placed between two clamping pieces 5, and linear contact type measuring needle 15 contacts with drive connecting plate 14 to read initial reading, and the output 13 of drive cylinder 12 on first detection board 3 contracts through drive connecting plate 14 to be able to exert the pulling force of pointing to first detection board 3 to second detection board 4, make second detection board 4 slide to first detection board 3, and the operation drive drive screw rod rotates of screw rod driver, and the rotation of drive screw rod can drive first detection board 3 to slide to second detection board 4 direction through screw rod nut, and first detection board 3 and second detection board 4 will slide on slide rail 9 to make two clamping pieces 5 displace to each other and clamp workpiece 6, and linear contact type measuring needle 15 carries out linear displacement along the surface of drive connecting plate 14, and reads actual distance after workpiece 6 is clamped, and the thickness size of workpiece 6 is accurately obtained by subtracting actual reading from initial reading.

[0051] The specific embodiments described herein merely exemplify the utility model spirit. The person skilled in the utility model art can make various modifications or supplements to the described specific embodiments or replace with similar ways, but will not deviate from the utility model spirit or exceed the range defined by the attached claims.

[0052] Although the detection mounting bracket 1, detection bottom plate 2, first detection board 3, second detection board 4, clamping piece 5, workpiece 6, clamping drive mechanism 7, linear displacement sensing assembly 8, slide rail 9, sliding block 10, sliding drive structure 11, drive cylinder 12, output 13, drive connecting plate 14, linear contact type measuring needle 15, connecting rib 16, detection board limiting seat 17, nylon anti-collision block 18, give way 19, clamping rod 20, limiting block 21, limiting rod 22, etc. are used more in the text, using these terms is only for more conveniently describing and explaining the essence of the utility model, and it is contrary to the utility model spirit to explain them as any kind of additional limitation.

Claims

1. A thickness detection assembly with pneumatic clamping, comprising a detection mounting bracket (1), characterized in that, The detection installation support (1) is provided with a detection base plate (2), the detection base plate (2) is provided with a first detection plate (3) and a second detection plate (4), the opposite sides of the first detection plate (3) and the second detection plate (4) are respectively provided with clamping pieces (5), a workpiece (6) is arranged between the two clamping pieces (5), the first detection plate (3) and the second detection plate (4) are provided with a clamping driving mechanism (7) capable of driving the first detection plate (3) and the second detection plate (4) to move towards each other to make the workpiece (6) be clamped by the two clamping pieces (5), and the linear displacement sensing assembly (8) is arranged between the first detection plate (3) and the second detection plate (4).

2. A thickness detection assembly with pneumatic clamping according to claim 1, characterized in that The clamping driving mechanism (7) comprises at least one sliding rail (9) arranged on the detection base plate (2), the sliding rail (9) is distributed along the length direction of the detection base plate (2), the first detection plate (3) and the second detection plate (4) are respectively slidably connected to the sliding rail (9) through sliding blocks (10), and the sliding driving structure (11) capable of driving the first detection plate (3) and the second detection plate (4) to slide towards each other on the sliding rail (9) is arranged between the first detection plate (3) and the second detection plate (4).

3. A thickness detection assembly with pneumatic clamping according to claim 2, characterized in that The sliding driving structure (11) comprises a driving cylinder (12) arranged on the first detection plate (3), the output end (13) of the driving cylinder (12) is connected to the second detection plate (4) through a driving connecting plate (14), the detection base plate (2) is provided with a driving lead screw arranged along the length direction of the detection base plate (2), the screw nut of the driving lead screw is connected to the first detection plate (3), and the driving lead screw is connected with a lead screw driver.

4. A thickness detection assembly with pneumatic clamping according to claim 3, characterized in that The detection base plate (2) is provided with a limiting stop block (21), and the first detection plate (3) and the second detection plate (4) are respectively provided with limiting rods (22) capable of cooperating with the corresponding side of the limiting stop block (21).

5. A thickness detection assembly with pneumatic clamping according to claim 3, characterized in that The linear displacement sensing assembly (8) comprises a detection installation support (1) arranged on the first detection plate (3), the detection installation support (1) is provided with a linear contact type measuring needle (15), and the linear contact type measuring needle (15) is arranged along the moving direction of the driving connecting plate (14) and contacts the driving connecting plate (14) during detection.

6. A thickness detection assembly with pneumatic clamping according to claim 5, characterized in that The driving connecting plate (14) is arranged on the side wall opposite to the first detection plate (3) of the second detection plate (4), and a connecting rib (16) is further arranged between the side of the driving connecting plate (14) close to the second detection plate (4) and the second detection plate (4).

7. A thickness detection assembly with pneumatic clamping according to claim 2, characterized in that Two sliding rails (9) are symmetrically arranged on the detection base plate (2), the end faces of the first detection plate (3) and the second detection plate (4) are provided with sliding blocks (10) slidably matched with the two sliding rails (9), and detection plate limiting seats (17) are arranged on the two sides in the length direction of the detection base plate (2).

8. A thickness detection assembly with pneumatic clamping according to claim 7, characterized in that The detection plate limiting seat (17) is arranged in an L shape between the end heads of the two sliding rails (9), and a nylon anti-collision block (18) is arranged on the contact surface of the detection plate limiting seat (17).

9. A thickness detection assembly with pneumatic clamping according to any one of claims 1-8, characterized in that, The first detection plate (3) and the second detection plate (4) are respectively provided with a position allowing part (19) on the opposite side, and the clamping part (5) is arranged on the position allowing part (19).

10. A thickness detection assembly with pneumatic clamping according to claim 9, characterized in that The clamping part (5) comprises a clamping rod (20), the clamping rod (20) is arranged on the position allowing part (19) and detachably connected with the position allowing part (19), the position allowing part (19) is provided with a threaded hole, and the clamping rod (20) is screw-connected in the threaded hole.

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