Disc-shaped part outer diameter detection tool

Abstract

This utility model discloses a fixture for detecting the outer diameter of disc-shaped parts, including a base, a bracket, a dial indicator, a clamping block, a guide rod, a connecting rod, and a limiting screw. A pad, a first upright plate, and a second upright plate are fixedly installed on the base. A first clamping block and a second clamping block are respectively fixedly installed on the first and second upright plates. The bracket is fixedly installed on the clamping blocks, and the dial indicator body is fixedly installed on the bracket. The limiting screw is screwed and fixedly installed on the left end face of the base. Under the action of a spring, the clamping block presses against the limiting screw. This detection fixture positions the end face and rear end face of the die-cast square disc-shaped part to be tested against the first and second positioning cylinders, respectively. The outer diameter is then detected by the dial indicator. The clamping block can move to the left to create a clamping area, and can also move back to its original position under the action of a spring. It has the advantages of convenient clamping, fast detection speed, and low fixture cost.

Description

Technical Field

[0001] This utility model belongs to the field of testing tooling technology, and in particular relates to a tooling for testing the outer diameter of disc-shaped parts. Background Technology

[0002] Currently, disc-shaped parts are inspected using two dial indicators, but for square disc-shaped parts, the lack of a transition arc surface makes it impossible to push the square part between the two dial indicators. Furthermore, for die-cast square disc-shaped parts, the required accuracy for outer diameter measurement is between 100μm and 300μm, and using a high-precision laser measuring instrument presents a cost problem. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide a tooling that is cost-effective and can detect the outer diameter of die-cast square disc-shaped parts.

[0004] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: a tooling for detecting the outer diameter of disc-shaped parts, including a base, a bracket, a dial indicator, a clamping block, a guide rod, a connecting rod, and a limiting screw; A pad, a first upright plate, and a second upright plate are fixedly installed on the base. A first clamping block and a second clamping block are fixedly installed on the first upright plate and the second upright plate, respectively. A first positioning cylinder and a second positioning cylinder are fixedly clamped in the first clamping block and the second clamping block, respectively. Four guide rods are fixedly installed in a rectangular arrangement on the left end of the base. A connecting rod is fixedly installed at the center of the left end of the base. A limit nut is screwed to the outer end of the connecting rod. A clamping block is slidably installed on the guide rod and the connecting rod. A spring is sleeved on the connecting rod. The left and right ends of the spring act on the limit nut and the clamping block, respectively. The bracket is fixedly mounted on the clamping block, and the dial indicator body is fixedly mounted on the bracket. The limit screw is screwed and fixed on the left end face of the base. Under the action of the spring force, the clamping block presses on the limit screw.

[0005] Preferably, two washers are also slidably mounted on the connecting rod, with the left and right ends of the spring acting on the washers respectively.

[0006] Preferably, the first clamping block and the second clamping block are respectively provided with clamping grooves, and the first positioning cylinder and the second positioning cylinder are placed in the clamping grooves. The first positioning cylinder and the second positioning cylinder are locked and fixed in the clamping grooves by bolts.

[0007] Preferably, a handle is fixedly installed at the front end of the clamping block.

[0008] Compared with the prior art, the advantages of this utility model are: this testing fixture positions the end face and rear end face of the die-cast square disc-shaped part to be tested against the first positioning cylinder and the second positioning cylinder respectively, and then uses a dial indicator to test its outer diameter. The clamping block can move to the left to leave a clamping area, and the clamping block can also move to the right to reset under the action of spring force. It has the advantages of convenient clamping, fast testing speed and low tooling cost. Attached Figure Description

[0009] The present invention will be further described below with reference to the accompanying drawings.

[0010] Figure 1 This is the front view of this utility model.

[0011] Figure 2 This is a top view of the present invention. Detailed Implementation

[0012] The present invention will now be described in detail with reference to specific embodiments: like Figure 1 and Figure 2 The above describes a tooling for measuring the outer diameter of a disc-shaped part, which includes a base 1, a bracket 4, a dial indicator 41, a clamping block 5, a guide rod 6, a connecting rod 7, and a limiting screw 8. A pad 11, a first upright plate 2, and a second upright plate 3 are fixedly installed on the base 1. A first clamping block 21 and a second clamping block 31 are fixedly installed on the first upright plate 2 and the second upright plate 3, respectively. A first positioning cylinder 22 and a second positioning cylinder 32 are fixedly clamped in the first clamping block 21 and the second clamping block 31, respectively. Four guide rods 6 are fixedly installed in a rectangular arrangement on the left end of the base 1. A connecting rod 7 is fixedly installed at the center of the left end of the base 1. A limit nut 71 is screwed and fixedly installed on the outer end of the connecting rod 7. A clamping block 5 is slidably installed on the guide rods 6 and the connecting rod 7. A spring 72 is sleeved on the connecting rod 7. The left and right ends of the spring 72 act on the limit nut 71 and the clamping block 5 respectively. The bracket 4 is fixedly installed on the clamping block 5, and the dial indicator 41 is fixedly installed on the bracket 4. The limit screw 8 is screwed and fixedly installed on the left end face of the base 1. Under the action of the spring force 72, the clamp 5 presses on the limit screw 8.

[0013] Two washers are also slidably mounted on the connecting rod 7. The left and right ends of the spring 72 act on the washers respectively. The washers can prevent the right end of the spring 72 from being squeezed into the hole between the connecting rod 7 and the base 1, and at the same time prevent the left end of the spring 72 from coming off the limit nut 71. That is, the two washers are pressed against the limit nut 71 and the clamping block 5 by the spring 72 respectively.

[0014] The first clamping block 21 and the second clamping block 31 are respectively provided with clamping grooves. The first positioning cylinder 22 and the second positioning cylinder 32 are placed in the clamping grooves. The first positioning cylinder 22 and the second positioning cylinder 32 are locked and fixed in the clamping grooves by bolts. That is, the clamping grooves are tightened by bolts, thereby pressing and fixing the first positioning cylinder 22 and the second positioning cylinder 32.

[0015] A handle 9 is fixedly installed at the front end of the clamping block 5. The handle 9 allows the operator to overcome the elastic force of the spring 72 and pull the clamping block 5 to the left to create clamping space. The clamping block is then placed into the clamping space from the top to prevent the clamping block 5 from springing back to the right, thus facilitating the clamping operation of the parts.

[0016] Before testing, the operator overcomes the spring force of spring 72 and pulls clamping block 5 to the left to create clamping space. First, a standard-sized die-cast square disc-shaped part is placed on pad 11, with the right end face and rear end face of the part pressed against the first positioning cylinder 22 and the second positioning cylinder 32, respectively. After spring 72 returns to its original position, pushing clamping block 5 into contact with the limit screw 8, the probe of dial indicator 41 contacts the standard part, and dial indicator 41 is zeroed. During testing, clamping block 5 is first pulled to the left to create clamping space, then the part to be tested is placed on pad 11, with the part pressed against the first positioning cylinder 22 and the second positioning cylinder 32. Spring 72 pushes clamping block 5 to return to its original position to contact the limit screw 8. The probe of dial indicator 41 is then placed against the part to be tested. By observing the value of dial indicator 41, the outer diameter of the die-cast square disc-shaped part can be measured.

Claims

1. A disc-shaped part outer diameter detection tool, characterized by: Includes base (1), bracket (4), dial indicator (41), clamp (5), guide rod (6), connecting rod (7) and limit screw (8); A pad (11), a first upright plate (2), and a second upright plate (3) are fixedly installed on the base (1). A first clamping block (21) and a second clamping block (31) are fixedly installed on the first upright plate (2) and the second upright plate (3), respectively. A first positioning cylinder (22) and a second positioning cylinder (32) are fixedly clamped in the first clamping block (21) and the second clamping block (31), respectively. Four guide rods (6) are fixedly installed in a rectangular arrangement on the left end of the base (1). A connecting rod (7) is fixedly installed at the center of the left end of the base (1). A limit nut (71) is screwed and fixedly installed on the outer end of the connecting rod (7). A clamping block (5) is slidably installed on the guide rods (6) and the connecting rod (7). A spring (72) is sleeved on the connecting rod (7). The left and right ends of the spring (72) act on the limit nut (71) and the clamping block (5) respectively. The bracket (4) is fixedly installed on the clamp (5), and the body of the dial indicator (41) is fixedly installed on the bracket (4); The limiting screw (8) is screwed and fixed on the left end face of the base (1). Under the action of the spring (72), the clamp (5) presses on the limiting screw (8).

2. The disc-shaped part outer diameter detection tooling of claim 1, wherein: Two washers are also slidably mounted on the connecting rod (7), and the left and right ends of the spring (72) act on the washers respectively.

3. The disc-shaped part outer diameter detection tooling of claim 1, wherein: The first clamping block (21) and the second clamping block (31) are respectively provided with clamping grooves. The first positioning cylinder (22) and the second positioning cylinder (32) are both placed in the clamping grooves. The first positioning cylinder (22) and the second positioning cylinder (32) are locked and fixed in the clamping grooves by bolts.

4. The disc-shaped part outer diameter detection tooling of claim 1, wherein: The clamp (5) has a handle (9) fixedly installed at the front end.

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