Diameter measuring instrument with high ovality measuring precision

Abstract

The utility model relates to a diameter measuring instrument with high ovality measuring precision, which comprises a rack, an arc-shaped frame, two transmitting and receiving pieces for transmitting and receiving laser and a clamping assembly, the arc-shaped frame is rotatably connected to the rack along the axis of the arc-shaped frame, the two transmitting and receiving pieces are located on a straight line passing through the rotating line of the arc-shaped frame, and the clamping assembly is located on the arc-shaped frame. The receiving and sending piece is arranged on the arc-shaped frame, and the clamping assembly is used for clamping an object to be measured and keeping the object to be measured coaxial with the arc-shaped frame. The method and the device have the effect of improving the accuracy of measuring the material ovality by the diameter measuring instrument.

Description

Technical Field

[0001] The present application relates to the field of calipers, and in particular to a caliper with high ellipticity measurement accuracy. Background Art

[0002] The diameter gauge can be used to measure the diameter information of various rolled products. It can measure the maximum diameter, minimum diameter, average diameter, ovality and other information online.

[0003] The Chinese utility model patent with the publication number CN217236735U discloses a laser diameter gauge, including a housing, a through slot for measuring the diameter of the object to be measured, a guide wheel group is provided on both sides of the housing, the guide wheel group includes two guide wheels, the axes of the two guide wheels are collinear and the axis direction is perpendicular to the length direction of the through slot, and adjustment components for adjusting the distance between the two guide wheels are provided on both sides of the housing, the adjustment components are connected to the guide wheels, and the adjustment components move the guide wheels along the axis direction of the guide wheels. The application has the following effects: it can improve the stability of objects of different diameters placed on the guide wheels.

[0004] With respect to the above-mentioned related technologies, the inventors believe that the following defects exist: when the staff needs to measure the ovality of the material, it is necessary to rotate the material around the axis and measure the circumferential diameter of the material. During the rotation process, the relative position of the material and the diameter gauge is likely to change, resulting in a change in the front and back of the measurement section, and the measurement accuracy of the ovality is not high. Utility Model Content

[0005] In order to improve the accuracy of a diameter gauge in measuring the ovality of a material, the present application provides a diameter gauge with high ovality measurement accuracy.

[0006] The present application provides a diameter measuring instrument with high ellipticity measurement accuracy, which adopts the following technical solution:

[0007] A caliper with high ellipticity measurement accuracy comprises a frame, an arc frame, two transceivers for emitting and receiving lasers, and a clamping assembly, wherein the arc frame is rotatably connected to the frame along the axis of the arc frame, the two transceivers are located on a straight line passing through the arc frame rotation line, the transceivers are arranged on the arc frame, and the clamping assembly is used to clamp an object to be measured and keep the object to be measured in a coaxial state with the arc frame.

[0008] By adopting the above technical solution, when the material needs to be measured, the staff first places the object to be measured on the frame through the clamping assembly, and places the object to be measured in a coaxial state with the axis of the arc frame through the clamping assembly. When the diameter of the object to be measured needs to be measured, the object to be measured can be directly measured through the transceiver. When the ovality of the object to be measured needs to be measured, the staff can rotate the arc frame to change the position of the transceiver relative to the object to be measured, so that the direction of laser irradiation of the object to be measured is changed, and the ovality of the object to be measured can be measured. By rotating the arc frame, the relative displacement of the object to be measured and the transceiver can be reduced, and the measurement position of the object to be measured is on the same cross section, and the ovality measurement accuracy is high.

[0009] Optionally, a driving member for driving the arc-shaped frame to rotate is provided on the frame, and the driving member includes an arc-shaped rack, a gear and a turning handle, the arc-shaped rack is coaxially arranged on the arc-shaped frame, the arc-shaped rack is arranged on the arc-shaped frame, the gear is rotatably connected to the frame, the gear is meshed with the arc-shaped rack, and the turning handle is used to drive the gear to rotate.

[0010] By adopting the above technical solution, when the staff needs to measure the ovality of the object to be measured, the staff can turn the handle, the handle drives the gear to rotate, the gear drives the arc rack to rotate, the arc rack can drive the arc frame to rotate, and the arc frame can measure the ovality of the object to be measured by rotating. The driving part has a simple structure and is easy for the staff to operate.

[0011] Optionally, the driving member also includes a worm wheel and a worm, the worm wheel is coaxially arranged with the gear, the worm wheel is arranged on the gear, the worm is rotatably connected to the frame, the worm is meshed with the worm wheel, and the handle is arranged on the worm.

[0012] By adopting the above technical solution, the worm gear has a self-locking effect. When the measurement result of the object to be measured needs to be recorded, the staff releases the handle and the drive frame can remain stationary relative to the frame, which is convenient for the staff to record data. In addition, the worm gear has a high precision and the arc frame can be adjusted more accurately, thereby improving the measurement accuracy of the equipment.

[0013] Optionally, an outer side wall of the arc-shaped frame is provided with an arc-shaped groove, the arc-shaped rack is located in the arc-shaped groove, and the gear is located in the arc-shaped groove.

[0014] By adopting the above technical solution, the arc groove limits the separation of the arc rack and the gear, ensuring that the arc frame can be driven to rotate when the staff operates the handle.

[0015] Optionally, the clamping assembly includes two clamping members and a linkage member, the two clamping members are respectively located on both sides of the arc frame axis, the clamping member includes two mounting frames and two V-shaped guide rollers, the two mounting frames are respectively distributed along the arc frame axis direction, the mounting frames are slidingly connected to the frame along the radial direction of the arc frame, the two guide rollers correspond to the two mounting frames one by one, the guide rollers are rotatably connected to the mounting frames, and the linkage member is used to drive the two clamping members closer to each other.

[0016] By adopting the above technical solution, the staff places the object to be measured between the two clamping members, and the linkage member drives the two clamping members to approach each other until the four guide rollers on the two clamping members are all in contact with the outer wall of the object to be measured. The mounting frame of the same clamping member is distributed along the axis direction of the machine arc frame, and the length direction of the object to be measured is parallel to the axis direction of the arc frame. Since the guide roller is in the shape of a V-shaped roller, when the four guide rollers work together to clamp the object to be measured, the object to be measured is coaxially arranged with the arc frame, and the clamping assembly can clamp objects to be measured with different diameters, thereby improving the measuring range of the diameter gauge.

[0017] Optionally, the linkage part includes two linkage frames, two linkage racks, a linkage gear and a tension spring, the two linkage frames correspond one-to-one to the two clamping members, the two mounting frames are arranged on the linkage frames, the two linkage racks correspond one-to-one to the two linkage frames, the length direction of the linkage racks is parallel to the sliding direction of the mounting frames, the linkage racks are arranged on the linkage frames, the linkage gears are rotatably connected to the frame, the two linkage gears are respectively located on both sides of the linkage gears, the linkage gears are meshed with the linkage racks, and the tension spring is used to bring the two linkage frames closer to each other.

[0018] By adopting the above technical solution, under the action of the tension spring, the two linkage frames approach each other, and because the linkage rack on the linkage frame is meshed with the linkage gear, the two linkage frames move at the same distance relative to the linkage gear, and the movement of the linkage frame will drive the installation frame to move. The movement distance of the installation frame is consistent, so that when the guide roller clamps the object to be measured, the diameter of the object to be measured is coaxially arranged with the arc frame, and the linkage component structure is simple and reasonable.

[0019] Optionally, the linkage frame is provided with a holding rod for the convenience of the staff to hold.

[0020] By adopting the above technical solution, the holding rod makes it easier for the staff to overcome the tension of the tension spring on the two linkage frames, so as to place the object to be measured between the two clamping members.

[0021] Optionally, the outer side wall of the guide roller is provided with an anti-skid layer for increasing the friction between the guide roller and the object to be measured.

[0022] By adopting the above technical solution, the anti-skid layer reduces the self-rotation of the object to be measured, thereby improving the accuracy of the diameter measuring instrument in measuring the ovality of the object to be measured.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. The driving member can drive the arc frame to rotate on the frame, so that the two transceivers rotate relative to the object to be measured, thereby improving the accuracy of measuring the ellipticity of the object to be measured;

[0025] 2. The two clamping parts are used to clamp the object to be measured, so that the caliper can measure the ovality of objects of different sizes;

[0026] 3. The linkage member brings the two clamping members closer to each other and keeps clamping the object to be measured, so that the object to be measured and the arc frame remain in a coaxial state. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a diameter gauge with high ovality measurement accuracy.

[0028] Figure 2 It is a cross-sectional view of the frame, used to show the structural schematic diagram of the drive components.

[0029] Figure 3 yes Figure 1 Schematic diagram of the structure of the intermediate linkage.

[0030] Figure numerals: 1. frame; 11. avoidance groove; 2. arc frame; 21. arc groove; 3. sending and receiving part; 4. clamping assembly; 41. clamping part; 411. mounting frame; 412. guide roller; 413. anti-slip layer; 42. linkage part; 421. linkage frame; 422. linkage rack; 423. linkage gear; 424. tension spring; 5. driving part; 51. arc rack; 52. gear; 53. turning handle; 54. worm gear; 55. worm; 6. holding rod. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1-3 This application is described in further detail.

[0032] The present application embodiment discloses a diameter measuring instrument with high ellipticity measurement accuracy. Figure 1 and Figure 2A diameter gauge with high ellipticity measurement accuracy includes a frame 1, an arc frame 2, two transceivers 3, a clamping assembly 4 and a driving member 5. The arc frame 2 is an arc shape, the arc frame 2 is vertically arranged, and the arc frame 2 is rotatably connected to the frame 1. The two transceivers 3 are evenly distributed along the circumferential direction of the axis of the arc frame 2. The transceivers 3 are fixedly arranged on the inner side wall of the arc frame 2. The two transceivers 3 are respectively a transmitter and a receiver. The transmitter is used to emit laser toward the receiver, and the receiver is used to receive laser that is not blocked by the object to be detected. The driving member 5 is used to drive the arc frame 2 to rotate. The clamping assembly 4 is arranged on the frame 1. The clamping assembly 4 is used to clamp the object to be measured and keep the object to be measured and the arc frame 2 in a coaxial state.

[0033] Reference Figure 1 and Figure 2 The driving member 5 includes an arc-shaped rack 51, a gear 52, a turning handle 53, a worm wheel 54 and a worm 55. The outer wall of the arc-shaped frame 2 is provided with an arc-shaped groove 21. The arc-shaped groove 21 is coaxially arranged with the arc-shaped frame 2. Both ends of the arc-shaped groove 21 are sealed. The arc-shaped rack 51 is coaxially arranged with the arc-shaped frame 2. The arc-shaped rack 51 is fixedly arranged in the arc-shaped groove 21. The gear 52 is vertically arranged. The axis of the gear 52 is perpendicular to the axis of the arc-shaped rack 51. The gear 52 is located in the arc-shaped groove 21. The gear 52 It is rotatably connected to the frame 1, the gear 52 is meshed with the arc-shaped rack 51, the worm wheel 54 is coaxially arranged with the gear 52, the worm wheel 54 is fixedly arranged on the rotation axis of the gear 52, the worm 55 is vertically arranged, the worm 55 is rotatably connected to the frame 1, the worm 55 is meshed with the worm wheel 54, the turning handle 53 is coaxially arranged with the worm 55, the upper end surface of the worm 55 passes through the frame 1, the turning handle 53 is horizontally arranged, the turning handle 53 is located above the frame 1, and the turning handle 53 is fixedly arranged on the upper end surface of the worm 55.

[0034] Reference Figure 1 and Figure 3 The clamping assembly 4 includes two clamping members 41 and a linkage member 42. The two clamping members 41 are distributed along the length direction of the frame 1. The two clamping members 41 are respectively located on both sides of the axis of the arc frame 2. The clamping member 41 includes two mounting frames 411 and two guide rollers 412. The two mounting frames 411 are distributed along the axis direction of the arc frame 2. The two mounting frames 411 are located on both sides of the arc frame 2. The mounting frames 411 are slidably connected to the frame 1 along the length direction of the frame 1. The two guide rollers 412 correspond to the two mounting frames 411 one by one. The guide roller 412 is vertically arranged and rotatably connected to the mounting frame 411. The guide roller 412 is in the shape of a V-shaped roller. The outer wall of the guide roller 412 is fixedly provided with an anti-skid layer 413. The anti-skid layer 413 abuts against the object to be measured. The anti-skid layer 413 is used to increase the friction between the object to be measured.

[0035] Reference Figure 1 and Figure 3The linkage member 42 includes two linkage frames 421, two linkage racks 422, a linkage gear 423 and a tension spring 424. The lower end surface of the frame 1 is provided with an avoidance groove 11, which extends in the vertical direction. The length direction of the avoidance groove 11 is parallel to the length direction of the frame 1. The two linkage frames 421 correspond to the two clamping members 41 one by one. The two mounting frames 411 of the same clamping member 41 are fixedly arranged on the linkage frame 421. The linkage frame 421 is slidably connected to the avoidance groove 11 along the length direction of the frame 1. The linkage gear 423 is horizontally arranged. The linkage gear 423 is rotatably connected to the groove top wall of the avoidance groove 11. The two linkage racks 422 Corresponding one to one with the two linkage frames 421, the length direction of the linkage rack 422 is parallel to the sliding direction of the linkage frame 421, the two linkage racks 422 are respectively located on both sides of the linkage rack 422, the linkage rack 422 is meshed with the linkage gear 423, the tension spring 424 is located between the two linkage frames 421, the length direction of the tension spring 424 is parallel to the sliding direction of the linkage frame 421, one end of the tension spring 424 is fixedly set on one of the linkage frames 421, and the other end of the tension spring 424 is fixedly set on the other linkage frame 421, and a holding rod 6 is fixedly set on the linkage frame 421, and the length direction of the holding rod 6 is parallel to the width direction of the frame 1.

[0036] The implementation principle of a diameter gauge with high ellipticity measurement accuracy in the embodiment of the present application is as follows: the staff first holds the holding rod 6, and the two linkage frames 421 move in opposite directions to overcome the elastic force of the tension spring 424, and the object to be measured is placed between the two clamping members 41. Then the staff releases the holding rod 6, and the linkage frames 421 approach each other under the elastic force of the tension spring 424. Due to the mutual engagement of the linkage rack 422 and the linkage gear 423, the two linkage frames 421 move the same distance, and the two linkage frames 421 respectively drive the corresponding two mounting frames 411 to move, and the guide rollers 412 on the four mounting frames 411 are all in contact with the outer wall of the object to be detected, and the guide rollers 412 are in the shape of V-shaped rollers. The guide rollers 412 clamp the object to be detected and keep the object to be detected and the arc frame 2 in a coaxial state.

[0037] The diameter of the object to be detected can be measured by the transceiver on the arc frame 2. When the staff needs to measure the ovality of the object to be detected, the staff can rotate the handle 53, the handle 53 drives the worm 55 to rotate, the worm 55 drives the worm wheel 54 to rotate, the worm wheel 54 drives the gear 52 to rotate, the gear 52 drives the arc rack 51, the arc rack 51 drives the arc frame 2 to rotate, and the arc rack 51 and the gear 52 are both located in the arc groove 21, the gear 52 cannot escape from the arc rack 51, the arc frame 2 rotates, so that the two transceivers rotate around the axis of the object to be detected, and the ovality of the object to be detected can be measured.

[0038] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A diameter measuring instrument with high ellipticity measurement accuracy, characterized in that: The invention comprises a frame (1), an arc frame (2), two transceivers (3) for emitting and receiving laser light, and a clamping assembly (4), wherein the arc frame (2) is rotatably connected to the frame (1) along the axis of the arc frame (2), the two transceivers (3) are located on a straight line passing through a rotation line of the arc frame (2), the transceivers (3) are arranged on the arc frame (2), and the clamping assembly (4) is used to clamp an object to be measured and keep the object to be measured in a coaxial state with the arc frame (2).

2. A diameter measuring instrument with high ellipticity measurement accuracy according to claim 1, characterized in that: The frame (1) is provided with a driving member (5) for driving the arc frame (2) to rotate. The driving member (5) comprises an arc-shaped rack (51), a gear (52) and a turning handle (53). The arc-shaped rack (51) is coaxially arranged with the arc-shaped frame (2). The arc-shaped rack (51) is arranged on the arc-shaped frame (2). The gear (52) is rotatably connected to the frame (1). The gear (52) is meshed with the arc-shaped rack (51). The turning handle (53) is used to drive the gear (52) to rotate.

3. A caliper with high ellipticity measurement accuracy according to claim 2, characterized in that: The driving member (5) further comprises a worm wheel (54) and a worm (55), wherein the worm wheel (54) is coaxially arranged with the gear (52), the worm wheel (54) is arranged on the gear (52), the worm (55) is rotatably connected to the frame (1), the worm (55) is meshed with the worm wheel (54), and the turning handle (53) is arranged on the worm (55).

4. A caliper with high ellipticity measurement accuracy according to claim 2, characterized in that: An arc-shaped groove (21) is formed on the outer side wall of the arc-shaped frame (2), the arc-shaped rack (51) is located in the arc-shaped groove (21), and the gear (52) is located in the arc-shaped groove (21).

5. The caliper with high ellipticity measurement accuracy according to claim 1, characterized in that: The clamping assembly (4) comprises two clamping members (41) and a linkage member (42). The two clamping members (41) are respectively located on both sides of the axis of the arc frame (2). The clamping member (41) comprises two mounting frames (411) and two V-shaped guide rollers (412). The two mounting frames (411) are respectively distributed along the axis of the arc frame (2). The mounting frames (411) are slidably connected to the frame (1) along the radial direction of the arc frame (2). The two guide rollers (412) correspond to the two mounting frames (411) one by one. The guide rollers (412) are rotatably connected to the mounting frames (411). The linkage member (42) is used to drive the two clamping members (41) to approach each other.

6. A caliper with high ellipticity measurement accuracy according to claim 5, characterized in that: The linkage member (42) comprises two linkage frames (421), two linkage racks (422), a linkage gear (423) and a tension spring (424); the two linkage frames (421) correspond one-to-one to the two clamping members (41); the two mounting frames (411) are arranged on the linkage frames (421); the two linkage racks (422) correspond one-to-one to the two linkage frames (421); the length direction of the linkage racks (422) is parallel to the sliding direction of the mounting frames (411); the linkage racks (422) are arranged on the linkage frames (421); the linkage gear (423) is rotatably connected to the frame (1); the two linkage gears (423) are respectively located on both sides of the linkage gear (423); the linkage gear (423) meshes with the linkage racks (422); and the tension spring (424) is used to bring the two linkage frames (421) closer to each other.

7. A caliper with high ellipticity measurement accuracy according to claim 6, characterized in that: The linkage frame (421) is provided with a gripping rod (6) for easy gripping by a worker.

8. The caliper with high ellipticity measurement accuracy according to claim 5, characterized in that: The outer side wall of the guide roller (412) is provided with an anti-slip layer (413) for increasing the friction between the guide roller and the object to be measured.

Images