A large flatness gauge

Abstract

The utility model relates to a kind of large flatness testing fixture, including rack body and lift board and detection assembly being installed on the rack body, further including driving assembly and anti-falling component, the driving assembly is used to drive lift board upward / downward movement;The detection assembly includes the detection plate being fixedly connected with the rack body and several groups of probe being installed on the detection plate, several groups of probe are connected with power negative pole by second wiring terminal, and the lift board is connected with power positive pole by first wiring terminal;The anti-falling component includes the mounting plate being fixedly connected with the lift board and the first driving element being fixed on the mounting plate, the first driving element output end is equipped with ratchet element, rack is equipped on the rack body, and the ratchet element is stuck rack and prevent lift board from falling down.The utility model can quickly detect the large plane flatness of part, improve detection efficiency, also increase the anti-falling design, improve security.

Description

Technical Field

[0001] This utility model relates to the field of planar inspection technology, and in particular to a large flatness inspection tool. Background Technology

[0002] Flatness, also known as smoothness, is one of the four common shape tolerances in product geometry specifications and a key indicator for evaluating the quality of product shaped surfaces. For mounting surfaces, flatness directly affects the fit and fastening performance of components.

[0003] For some heavy parts, flatness inspection is difficult. They need to be transported to the inspection equipment before measuring tools can be used for inspection, which results in low inspection efficiency. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution: A large flatness inspection tool includes a frame body, a lifting plate and a detection assembly mounted on the frame body, and also includes a drive assembly and a fall protection assembly. The drive assembly is used to drive the lifting plate to move up / down. The detection assembly includes a detection plate fixedly connected to the frame body and several sets of probes mounted on the detection plate. It also includes a first terminal block and several sets of second terminals block. The several sets of probes are connected to the negative terminal of the power supply through the second terminals block. The lifting plate is connected to the positive terminal of the power supply through the first terminal block. The detection heads of the several sets of probes are located on the same plane. When a part on the lifting plate contacts the detection head of the probe, the circuit is turned on. The fall protection assembly includes a mounting plate fixedly connected to the lifting plate and a first drive element fixed on the mounting plate. A ratchet element is installed at the output end of the first drive element, and a rack is provided on the frame body. The ratchet element locks the rack to prevent the lifting plate from falling.

[0005] Furthermore, the drive assembly includes a second drive element and several sets of lead screw elements disposed on the frame body. Each set of lead screw elements has a synchronous pulley at one end, and the several sets of synchronous pulleys are connected in series through a synchronous belt. The output end of the second drive element is connected to one of the sets of lead screw elements.

[0006] Furthermore, the second driving element is a motor and a bevel gear set, wherein the bevel gear set is connected to the motor and the lead screw element respectively.

[0007] Furthermore, the ratchet element includes a switch plate and a ratchet that rotates on the switch plate. The switch plate is provided with an elastic element, one end of which abuts against the switch plate and the other end of which abuts against the ratchet. The switch plate is connected to the output end of the first drive element, and the first drive element drives the switch plate to rotate to move closer to / away from the rack.

[0008] Furthermore, the elastic element is a spring.

[0009] Furthermore, the first driving element is a motor.

[0010] The advantages of the large flatness inspection tool provided by this utility model are as follows: This invention places the part on a lifting plate and slowly raises it to contact the probe. The tail of the probe is connected to the negative terminal, and the lifting plate is connected to the positive terminal. Since the part is a metal part, as long as it contacts the probe, a conductive circuit will be formed. Therefore, multiple conductive points can be quickly measured to determine whether the surface is flat. This method is simple, fast, and highly efficient.

[0011] This utility model also includes a mechanism to prevent falling. The ratchet will slowly rise with the lifting plate. When there is an accidental power failure or the motor torque is exceeded, the ratchet will engage with the rack to prevent falling. During the return stroke, the first drive element drives the switch plate away from the rack. After the lifting plate returns, the drive switch plate moves closer to the rack, and the ratchet is engaged. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model; Figure 2 This is a schematic diagram of the detection component of this utility model; Figure 3 This is a schematic diagram of the probe wiring of this utility model; Figure 4 This is a schematic diagram of the detection principle of this utility model; Figure 5 This is a schematic diagram of the fall protection component of this utility model; Figure 6 This is a schematic diagram of the drive component of this utility model; Figure 7 This is a schematic diagram of the ratchet element of this utility model.

[0013] Explanation of the reference numerals in the figure: 1. Frame body; 2. Drive assembly; 21. Second drive element; 22. Lead screw element; 23. Synchronous pulley; 3. Lifting plate; 4. Anti-fall assembly; 41. Mounting plate; 42. First drive element; 43. Ratchet element; 431. Switch plate; 432. Ratchet; 433. Elastic element; 44. Rack; 5. Detection assembly; 51. Detection plate; 52. Probe; 53. First terminal block; 54. Second terminal block; 6. Parts. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figure 1-7 This utility model provides a large flatness inspection tool, including a frame body 1, a lifting plate 3 and a detection assembly 5 mounted on the frame body 1, a drive assembly 2 and a fall protection assembly 4. The drive assembly 2 is used to drive the lifting plate 3 to move upward / downward. The drive assembly 2 includes a second drive element 21 and several sets of lead screw elements 22 mounted on the frame body 1. Each set of lead screw elements 22 has a synchronous pulley 23 at one end, and the several sets of synchronous pulleys 23 are connected in series via a synchronous belt. The output end of the second drive element 21 is connected to one set of lead screw elements 2. It can be understood that the second drive element 21 is a motor and a bevel gear set, and the bevel gear set is connected to the motor and the lead screw element 22 respectively.

[0016] The detection assembly 5 includes a detection plate 51 fixedly connected to the frame body 1 and several sets of probes 52 mounted on the detection plate 51. It also includes a first terminal block 53 and several sets of second terminals 54. The several sets of probes are connected to the negative terminal of the power supply through the second terminals 54. The lifting plate 3 is connected to the positive terminal of the power supply through the first terminal block 53. The detection heads of the several sets of probes 52 are located on the same plane. When a part on the lifting plate 3 contacts the detection head of the probe 52, the circuit is turned on. The fall arrestor assembly 4 includes a mounting plate 41 fixedly connected to the lifting plate 3 and a first drive element 42 fixed on the mounting plate 41. The first drive element 42 is a motor. A ratchet element 43 is mounted on the output end of the first drive element 42. A rack 44 is provided on the frame body 1. The ratchet element 43 engages the rack to prevent the lifting plate 3 from falling. Specifically, the ratchet element 43 includes a switch plate 431 and a ratchet 432 that rotates on the switch plate 431. An elastic element 433 is provided inside the switch plate 431. One end of the elastic element 433 abuts against the switch plate 431, and the other end abuts against the ratchet 432. The switch plate 431 is connected to the output end of the first drive element 42. The first drive element 42 drives the switch plate 431 to rotate to move closer to / away from the rack 44. Preferably, the elastic element 433 is a spring.

[0017] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A large flatness inspection tool, characterized in that: It includes a frame body (1) and a lifting plate (3) and a detection component (5) mounted on the frame body (1), and also includes a drive component (2) and a fall protection component (4), wherein the drive component (2) is used to drive the lifting plate (3) to move up / down; The detection assembly (5) includes a detection plate (51) fixedly connected to the frame body (1) and several sets of probes (52) mounted on the detection plate (51). It also includes a first terminal (53) and several sets of second terminals (54). Several sets of probes are connected to the negative terminal of the power supply through the second terminal (54). The lifting plate (3) is connected to the positive terminal of the power supply through the first terminal (53). The detection heads of several sets of probes (52) are located on the same plane. When a part on the lifting plate (3) contacts the detection head of the probe (52), the circuit is turned on. The fall protection assembly (4) includes a mounting plate (41) fixedly connected to the lifting plate (3) and a first drive element (42) fixed on the mounting plate (41). A ratchet element (43) is installed at the output end of the first drive element (42). A rack (44) is provided on the frame body (1). The ratchet element (43) locks the rack to prevent the lifting plate (3) from falling.

2. The large flatness inspection fixture according to claim 1, characterized in that: The drive assembly (2) includes a second drive element (21) and several sets of lead screw elements (22) arranged on the frame body (1). Each set of lead screw elements (22) has a synchronous pulley (23) at one end. Several sets of synchronous pulleys (23) are connected in series with each other through a synchronous belt. The output end of the second drive element (21) is connected to one of the sets of lead screw elements (22).

3. The large flatness inspection fixture according to claim 2, characterized in that: The second drive element (21) is a motor and a bevel gear set, which is connected to the motor and the lead screw element (22) respectively.

4. The large flatness inspection fixture according to claim 1, characterized in that: The ratchet element (43) includes a switch plate (431) and a ratchet (432) that rotates on the switch plate (431). The switch plate (431) is provided with an elastic element (433), one end of which abuts against the switch plate (431) and the other end of which abuts against the ratchet (432). The switch plate (431) is connected to the output end of the first drive element (42), and the first drive element (42) drives the switch plate (431) to rotate to move closer to / away from the rack (44).

5. A large flatness inspection fixture according to claim 4, characterized in that: The elastic element (433) is a spring.

6. The large flatness inspection fixture according to claim 1, characterized in that: The first driving element (42) is a motor.

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