A tooling for detecting hole positions

Abstract

This utility model discloses a hole position detection fixture, including a base plate, linear slide rails, a platform, and a pressure plate. Two linear slide rails are parallel and fixedly installed on the base plate. A slider is fixedly installed on the bottom of the platform and slides on the linear slide rails. A bracket is fixedly installed on the platform, and the bracket is equipped with an angular limiting block. Springs are also sleeved on two diagonally opposite guide rods, and the upper and lower ends of the springs act on the pressure plate and the rod sleeves, respectively. Positioning pins and test pins are provided on the pressure plate corresponding to the parts. This fixture allows for fast placement and removal of parts on the angular limiting blocks. By pushing the pressure plate downward, four test pins can be used simultaneously to detect the hole positions of the four second mounting holes of the part, which has the advantage of high detection speed.

Description

Technical Field

[0001] This utility model belongs to the field of testing tooling technology, and in particular relates to a hole position testing tooling. Background Technology

[0002] Excessive positional tolerances can prevent the smooth assembly of pins, shafts, bolts, etc., causing assembly difficulties, interference, or even scrapping, and are the primary factor affecting assembly accuracy. Existing inspection methods use clamps or quick clamps to fix the parts on a fixture table, and then use inspection pins to pass through inspection holes on the fixture table. If the inspection hole on the fixture table is coaxial with the hole position on the part, the hole position of the part is considered qualified. However, since the pins need to be inserted into the inspection holes one by one, the inspection efficiency is low. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide a tooling for detecting the hole position of parts with high detection efficiency and convenient operation.

[0004] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: a hole position detection fixture, comprising a base plate, a linear slide rail, a platform and a pressure plate; Two linear slide rails are parallel and fixedly installed on the base plate. A slider is fixedly installed at the bottom of the platform and slides on the linear slide rails. A bracket is fixedly installed on the platform and the bracket is equipped with an angular limit block. Four guide rods are fixedly installed on the base plate in a rectangular arrangement. Rod sleeves and stop rings are fixedly installed on the two diagonally opposite guide rods. The pressure plate is slidably installed on the guide rods. Springs are also sleeved on the two diagonally opposite guide rods. The upper and lower ends of the springs act on the pressure plate and the rod sleeves, respectively. The pressure plate is equipped with locating pins and test pins for the corresponding parts.

[0005] Preferably, a first handle is fixedly installed on both sides of the pressure plate, and a second handle is installed on the right side of the platform.

[0006] Preferably, a limit rod is fixedly installed on the base plate, and an adjusting screw is screwed onto the top of the limit rod.

[0007] Preferably, the base plate is fixedly provided with a first stop and a second stop on the left and right sides to prevent the platform and slider from disengaging from the linear slide rail.

[0008] As a preferred option, the pressure plate is provided with weight reduction holes.

[0009] Compared with the prior art, the advantages of this utility model are: this testing fixture does not require the use of clamps or quick clamps to position the parts before using pins to pass through the testing holes of the fixture table to test the hole positions of the parts. Instead, the parts are pre-positioned by placing them on the angular limiting block at the top of the bracket, and then positioned by the positioning pins engaging with the first mounting hole of the parts. The pressure plate and four test pins are then pushed downwards to test the hole positions of the four second mounting holes of the parts. This fixture allows for fast placement and removal of parts on the angular limiting block, and by pushing the pressure plate downwards, four test pins can be used simultaneously to test the hole positions of the four second mounting holes of the parts, resulting in a high testing speed. Attached Figure Description

[0010] The present invention will be further described below with reference to the accompanying drawings.

[0011] Figure 1 This is a perspective view of the present invention.

[0012] Figure 2 This is the front view of this utility model.

[0013] Figure 3 It is a 3D view of the part. Detailed Implementation

[0014] The present invention will now be described in detail with reference to specific embodiments: like Figures 1 to 3 The hole position detection fixture shown includes a base plate 1, a linear slide rail 2, a stage 21, and a pressure plate 3; Two linear slide rails 2 are parallel and fixedly installed on the base plate 1. A slider 25 is fixedly installed on the bottom of the platform 21. The slider 25 is slidably installed on the linear slide rails 2. A bracket 22 is fixedly installed on the platform 21. Three brackets are arranged in a triangular distribution. An angular limiting block 26 is provided on the bracket 22. A positioning area is formed between the three angular limiting blocks 26. The two angular limiting blocks 26 on the rear side support and position the two rear corners of the part 9. The angular limiting block 26 on the front side supports and positions the middle position of the part 9.

[0015] Four guide rods 5 are fixedly installed on the base plate 1 in a rectangular distribution. Rod sleeves 4 and stop rings 41 are fixedly installed on the two diagonally opposite guide rods 5. The pressure plate 3 is slidably installed on the guide rods 5. Springs 42 are also sleeved on the two diagonally opposite guide rods 5. The upper and lower ends of the springs 42 act on the pressure plate 3 and the rod sleeves 4 respectively. Positioning pins 6 and test pins 7 are provided on the pressure plate 3 corresponding to part 9. The positioning pins are elastic pins. Since there is a gap between part 9 and the angular limiting block 26, to facilitate the placement and removal of part 9 from the angular limiting block 26, the bottoms of the two positioning pins 6 are set with a tapered structure, which serves to pre-position with the first mounting hole 91 on part 9. After the positioning pin 6 is positioned in the first mounting hole 91, the positioning pin 6 is compressed, and the pressure plate 3 continues to move downward. The bottom of the test pin 7 is set with a spherical structure, which serves as a guide. When the test pin 7 is pushed into the first mounting hole 92 of part 9, there is a gap of 0.2-0.3mm between the test pin 7 and the inner wall of the first mounting hole 92.

[0016] The pressure plate 3 is fixedly provided with first handles 31 on both sides. The two first handles 31 facilitate the downward pushing operation of the pressure plate 3. The platform 21 is provided with a second handle 26 on the right side. The platform 21 and the slider 25 are conveniently pulled left and right along the linear slide rail 2.

[0017] A limit rod 28 is fixedly installed on the base plate 1. An adjusting screw is screwed to the top of the limit rod 28. Rotating the adjusting screw adjusts the overall height of the limit rod 28. After the pressure plate 3 contacts the adjusting screw, it limits the extreme position of its downward pressure.

[0018] The base plate 1 is fixedly provided with a first stop 23 and a second stop 24 on the left and right sides to restrict the platform 21 and the slider 25 from disengaging from the linear slide rail 2. The first stop 23 is provided with a permanent magnet inside. The platform 21 is made of iron. The platform 21 is attracted and fixed after contacting the permanent magnet.

[0019] The pressure plate 3 is provided with weight reduction holes 30 to reduce the weight of the pressure plate 3 and reduce the stiffness coefficient of the spring 42, making it easier for the operator to push the pressure plate 3 downward, while also allowing the pressure plate 3 to easily spring back to its original position under the action of the spring force of the spring 42.

[0020] During testing, the operator first pulls the assembly of the platform 21 and slider 25 to the right along the linear slide rail 2, placing part 9 on the angular limiting block 26 set on the top of the bracket 22. Part 9 is then pushed to the left along the linear slide rail 2 with the platform 21 until it is below the pressure plate 3. After the platform 21 contacts the permanent magnet, it is attracted and fixed, pushing the pressure plate 3 downward. First, the two positioning pins 6 are pre-positioned with the two first mounting holes 91 of part 9 and then compressed, and the pressure plate 3 continues to move downward. If all four test pins 7 can be pushed into the second mounting holes 92 of part 9, and the pressure plate 3 moves downward to the limit position where it contacts the limiting rod 28, then the hole position of part 9 is qualified and it is a standard product.

Claims

1. A tooling for detecting hole positions, characterized in that: It includes a base plate (1), a linear slide rail (2), a platform (21), and a pressure plate (3); Two linear slide rails (2) are parallel and fixedly installed on the base plate (1). A slider (25) is fixedly installed at the bottom of the platform (21). The slider (25) is slidably installed on the linear slide rails (2). A bracket (22) is fixedly installed on the platform (21). An angular limiting block (26) is provided on the bracket (22). Four guide rods (5) are fixedly installed on the base plate (1) in a rectangular distribution. Rod sleeves (4) and stop rings (41) are fixedly installed on the two diagonally opposite guide rods (5). The pressure plate (3) is slidably installed on the guide rods (5). Springs (42) are also installed on the two diagonally opposite guide rods (5). The upper and lower ends of the springs (42) act on the pressure plate (3) and the rod sleeves (4) respectively. The pressure plate (3) is provided with a positioning pin (6) and a test pin (7) corresponding to the part (9).

2. The hole position detection fixture according to claim 1, characterized in that: The pressure plate (3) is fixedly provided with a first handle (31) on both sides, and the platform (21) is provided with a second handle (26) on the right side.

3. The hole position detection fixture according to claim 1, characterized in that: A limit rod (28) is fixedly installed on the base plate (1), and an adjusting screw is screwed onto the top of the limit rod (28).

4. The hole position detection fixture according to claim 1, characterized in that: The base plate (1) is fixedly equipped with a first stop (23) and a second stop (24) on the left and right sides to restrict the platform (21) and the slider (25) from disengaging from the linear slide rail (2).

5. The hole position detection fixture according to claim 1, characterized in that: The pressure plate (3) is provided with weight reduction holes (30).

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