Multifunctional flatness detection jig

Abstract

The utility model discloses a multifunctional flatness detection jig, which comprises a base body, a telescopic part arranged on the base body, and a switching part for driving the telescopic part and the base body to move relatively, the telescopic part is further provided with an adjusting part for adjusting the telescopic part to stretch out and draw back and a detection part installed at the stretching-out end of the telescopic part; the telescopic part comprises an outer arm, an inner arm sliding in the outer arm and a screw rod rotating in the inner arm; the detection part comprises a detection seat fixedly connected with the inner arm, a measuring instrument rotationally connected with the detection seat and a rotating ring fixedly connected with the measuring instrument. According to the utility model, the dial indicator can measure the flatness in each direction at will in the same reference range, and the practicability of the dial indicator is improved.

Description

Technical Field

[0001] The utility model belongs to the field of measurement technology, and particularly relates to a multifunctional flatness detection fixture. Background Art

[0002] The working principle of the dial indicator is to convert the tiny linear movement of the measuring rod caused by the measured dimension into the rotation of the pointer on the dial through the gear transmission, so as to read the size of the measured dimension. The dial indicator is a measuring instrument that uses rack gear or lever gear transmission to convert the linear displacement of the measuring rod into the angular displacement of the pointer.

[0003] In actual production, a dial indicator is often used to measure the flatness error of a plane. It can achieve a certain effect for simple plane measurement, but each time it is measured, it can only measure the plane fluctuations of one point and the surrounding area. If a large area or a local range needs to be measured, it cannot be completed. Even if multiple points are sampled, there will be large errors. Therefore, professional plane analysis and measurement equipment is needed for measurement. Summary of the invention

[0004] The main purpose of this utility model is to solve the problem that the dial indicator cannot measure the flatness in a large range or a local range.

[0005] In order to solve the above technical problems, a technical solution adopted by the utility model is:

[0006] A multifunctional flatness detection jig comprises a base body, a telescopic part mounted on the base body, and a switching part driving the telescopic part and the base body to move relative to each other, the telescopic part is also provided with an adjusting part for adjusting the telescopic part, and a detection part mounted on the extended end of the telescopic part;

[0007] The telescopic part includes an outer arm, an inner arm sliding in the outer arm, and a screw rod rotating in the inner arm, the screw rod is fixedly connected to a first gear element, the first gear element meshes with a second gear element, the second gear element is fixedly connected to the adjusting part, a sleeve and a central shaft matching with the screw rod are arranged in the outer arm, and a thread is arranged in the sleeve;

[0008] The detection part comprises a detection seat fixedly connected to the inner arm, a measuring instrument rotatably connected to the detection seat, and a rotating ring fixedly connected to the measuring instrument, wherein the rotating ring is used to drive the measuring instrument to rotate.

[0009] Furthermore, the switching part includes a switching seat fixedly connected to the outer arm and at least two groups of guide columns arranged in the switching seat and a pin shaft sliding on the guide column, a wrench is provided on the pin shaft, the pin shaft and the wrench are eccentrically arranged, a fastener is provided at the end of the guide column, an elastic element is provided between the guide column and the fastener, a wear-resistant plate fixedly connected to the machine base body is provided under the wrench, and the wrench rotates on the wear-resistant plate.

[0010] Furthermore, the detection seat is also provided with a stopper for limiting the rotation of the rotating ring, and the stopper is a screw.

[0011] Furthermore, the base body is also fixedly connected to a limit plate for limiting the position of the outer arm.

[0012] Furthermore, the measuring instrument is a dial indicator.

[0013] Beneficial effects of the utility model:

[0014] The utility model uses a machine base body and a retractable sliding arm to adjust the linear movement of the dial indicator without changing the positioning reference. At the same time, the displacement angle of the dial indicator can be changed under the premise that the positioning reference remains unchanged, so that the dial indicator can measure the flatness in all directions arbitrarily within the same reference range, thereby improving the practicability of the dial indicator. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 is a schematic diagram of the switching unit structure;

[0018] Figure 3 It is a schematic diagram of the use status of the switching part;

[0019] Figure 4 It is a schematic diagram of the telescopic part;

[0020] Figure 5 yes Figure 4 An enlarged schematic diagram of part A;

[0021] Description of reference numerals:

[0022] 1. Machine base body; 11. Limiting plate; 2. Switching part; 21. Switching seat; 22. Guide column; 23. Wrench; 24. Pin; 25. Elastic element; 26. Fastener; 27. Wear-resistant plate; 3. Telescopic part; 31. Outer arm; 311. Sleeve; 312. Center axis; 32. Inner arm; 33. Screw; 34. First gear element; 35. Second gear element; 4. Adjusting part; 5. Detection part; 51. Detection seat; 52. Measuring instrument;

[0023] 53. Rotating ring; 54. Anti-rotation member. DETAILED DESCRIPTION

[0024] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention. Specific embodiment 1:

[0026] like Figures 1 to 5 As shown, a multifunctional flatness detection jig comprises a base body 1, a telescopic part 3 mounted on the base body 1, and a switching part 2 driving the telescopic part 3 and the base body 1 to move relative to each other, the telescopic part 3 is also provided with an adjusting part 4 for adjusting the telescopic part 3, and a detection part 5 mounted on the extended end of the telescopic part 3;

[0027] The switching part 2 includes a switching seat 21 fixedly connected to the outer arm 31, two sets of guide columns 22 arranged in the switching seat 21, and a pin shaft 24 sliding on the guide column 22. A wrench 23 is provided on the pin shaft 24. The pin shaft and the wrench 23 are eccentrically arranged. A fastener 26 is provided at the end of the guide column 22. An elastic element 25 is provided between the guide column 22 and the fastener 26. Specifically, the elastic element is a spring. A wear-resistant plate 27 fixedly connected to the base body 1 is provided below the wrench 23. The wrench 23 rotates on the wear-resistant plate 27. When the wrench is rotated, the base body is pulled up, and the central axis 312 is exposed. Figure 3 At this time, the whole can rotate along the axis of the central axis and be adjusted to different angles as needed. Specifically, the base body 1 is also fixedly connected to a limit plate 11 for limiting the position of the outer arm 31. The function of the limit plate is that when the wrench is loosened, the base body is reset under the action of the elastic element, and the limit plate limits its position.

[0028] The telescopic part 3 includes an outer arm 31, an inner arm 32 sliding in the outer arm 31, and a screw rod 33 rotating in the inner arm 32. The screw rod 33 is fixedly connected with a first gear element 34, the first gear element 34 meshes with a second gear element 35, and the second gear element 35 is fixedly connected with the adjusting part 4. A sleeve 311 and a central shaft 312 matching with the screw rod 33 are provided in the outer arm 31, and a thread is provided in the sleeve 311.

[0029] The detection part 5 includes a detection seat 51 fixedly connected to the inner arm 32, a measuring instrument 52 rotatably connected to the detection seat 51, and a rotating ring 53 fixedly connected to the measuring instrument, wherein the rotating ring 53 is used to drive the measuring instrument 52 to rotate. Specifically, the detection seat 51 is also provided with a stopper 54 for limiting the rotation of the rotating ring 53, and the stopper 54 is a screw. Specifically, the measuring instrument 52 is a dial indicator.

[0030] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structural transformation made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, is also included in the patent protection scope of the present invention.

Claims

1. A multifunctional flatness detection fixture, characterized in that: The invention comprises a base body (1), a telescopic part (3) mounted on the base body (1), and a switching part (2) for driving the telescopic part (3) and the base body (1) to move relative to each other. The telescopic part (3) is also provided with an adjusting part (4) for adjusting the telescopic movement of the telescopic part (3), and a detection part (5) mounted on the extended end of the telescopic part (3); The telescopic portion (3) comprises an outer arm (31), an inner arm (32) sliding in the outer arm (31), and a screw rod (33) rotating in the inner arm (32); a first gear element (34) is fixedly connected to the screw rod (33); the first gear element (34) meshes with a second gear element (35); the second gear element (35) is fixedly connected to the adjusting portion (4); a sleeve (311) and a central shaft (312) matching with the screw rod (33) are provided in the outer arm (31); a thread is provided in the sleeve (311); The detection portion (5) comprises a detection seat (51) fixedly connected to the inner arm (32), a measuring instrument (52) rotatably connected to the detection seat (51), and a rotating ring (53) fixedly connected to the measuring instrument, wherein the rotating ring (53) is used to drive the measuring instrument (52) to rotate.

2. The multifunctional flatness detection fixture according to claim 1, characterized in that: The switching part (2) comprises a switching seat (21) fixedly connected to the outer arm (31), at least two groups of guide columns (22) arranged in the switching seat (21) and a pin shaft (24) sliding on the guide column (22), a wrench (23) is provided on the pin shaft (24), the pin shaft and the wrench (23) are eccentrically arranged, a fastener (26) is provided at the end of the guide column (22), an elastic element (25) is provided between the guide column (22) and the fastener (26), a wear-resistant plate (27) fixedly connected to the machine base body (1) is provided below the wrench (23), and the wrench (23) rotates on the wear-resistant plate (27).

3. The multifunctional flatness detection fixture according to claim 1, characterized in that: The detection seat (51) is also provided with a rotation-stopping member (54) for limiting the rotation of the rotating ring (53), and the rotation-stopping member (54) is a screw.

4. The multifunctional flatness detection jig according to claim 1, characterized in that: The base body (1) is also fixedly connected to a limit plate (11) for limiting the position of the outer arm (31).

5. The multifunctional flatness detection jig according to claim 1, characterized in that: The measuring instrument (52) is a dial indicator.

Images