A device for measuring the runout of special shaft parts

Abstract

The utility model relates to a device for measuring the runout of special shaft parts, and belongs to the field of measurement technology. It at least includes a magnetic plate, a V-block, a height gauge and a dial indicator; wherein the V-block includes two iron V-blocks and two nylon V-blocks, and one iron V-block and one nylon V-block are connected and assembled with fastening screws to form two double-layer V-blocks; a probe is provided at the bottom of the dial indicator; the dial indicator is horizontally fixed on the measuring claw of the height gauge by fastening screws; the V-shaped surfaces of the two double-layer V-blocks are relatively placed on the magnetic plate. The utility model can quickly and accurately measure the runout of special shaft parts, and the utility model can effectively avoid bumps and scratches on the surface of the shaft parts during the measurement process.

Description

Technical Field

[0001] The utility model relates to a device for measuring the runout of special shaft parts, belonging to the technical field of measurement. Background Art

[0002] Runout is an important parameter for shaft parts. Some special shaft parts now need to use an extremely narrow circle and a side surface as a reference to evaluate the runout of another long axis. The existing three-coordinate measurement has a narrow reference surface and the reference established by the program is an illusion and cannot accurately establish a coordinate system. The results of the three-coordinate measurement have poor repeatability and large errors. Therefore, using three-coordinate measurement for this type of product will result in large errors, low efficiency and low accuracy, and it is also impossible to accurately monitor the production process. Summary of the invention

[0003] In order to solve the problems existing in the above-mentioned prior art, the utility model provides a device for measuring the runout of special shaft parts. The utility model can quickly and accurately measure the runout of special shaft parts, and the utility model can effectively avoid bumps and scratches on the surface of shaft parts during the measurement process.

[0004] To achieve the above-mentioned purpose, the technical solution provided by the utility model is: a device for measuring the runout of special shaft parts, comprising at least a magnetic plate, a V-block, a height gauge and a dial indicator; the V-block comprises two iron V-blocks and two nylon V-blocks, and an iron V-block and a nylon V-block are connected and assembled with fastening screws to form two double-layer V-blocks; a probe is provided at the lower part of the dial indicator; the dial indicator is horizontally fixed on the measuring claws of the height gauge by fastening screws; the V-shaped surfaces of the two double-layer V-blocks are placed relatively on the magnetic plate.

[0005] Moreover, the nylon V-block and the iron V-block are the same in shape and size.

[0006] Moreover, the upper layer of the double-layer V-block is a nylon V-block, and the lower layer is an iron V-block.

[0007] Furthermore, the double-layer V-block is pressed against the shaft parts through the nylon V-block of the upper layer.

[0008] Furthermore, the magnetic plate fixes the double-layer V-blocks by magnetic force.

[0009] According to the above technical solution, the utility model provides a device for measuring the runout of special shaft parts. The magnetic plate and the double-layer V-block are used to fix the shaft parts to be measured, and then the runout of the shaft parts is measured by a dial indicator and a height gauge. Compared with the prior art, the utility model has the following advantages:

[0010] (1) The device for measuring the runout of special shaft parts provided by the utility model is highly practical. One device can check all products of the same type without the need for additional tooling, which is convenient and quick.

[0011] (2) The device for measuring the runout of special shaft parts provided by the utility model is accurate, convenient, has low detection cost and can be checked online.

[0012] (3) The device for measuring the runout of special shaft parts provided by the utility model is combined with an iron V-block and a nylon V-block. The iron V-block plays a fixing role in the lower layer, and the nylon V-block plays a product protection role in the upper layer. Through this device, the runout of the shaft can be quickly measured and the shaft parts can be effectively prevented from being bumped and scratched during the rotation process. Especially for products with high requirements on the product surface, it can quickly check and prevent bumps and scratches on the product surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A schematic diagram of the structure of a device for measuring the runout of special shaft parts;

[0014] Figure 2 A device for measuring the runout of special shaft parts. Top view of the double-layer V-block;

[0015] Figure 3 Schematic diagram of the structure of special shaft parts.

[0016] In the figure: 1. dial indicator; 2. height gauge; 3. magnetic plate; 4. iron V-block; 5. nylon V-block; 6. shaft parts; 7. probe. DETAILED DESCRIPTION

[0017] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments, but the protection scope of the present invention is not limited to the following embodiments.

[0018] In the technical solution provided by the utility model, a device for measuring the runout of special shaft parts at least includes a magnetic plate 3, a V-block, a height gauge 2 and a dial indicator 1; the V-block includes two iron V-blocks 4 and two nylon V-blocks 5, and an iron V-block 4 and a nylon V-block 5 are connected and assembled with fastening screws to form two double-layer V-blocks; a probe 7 is provided at the lower part of the dial indicator 1; the dial indicator 1 is horizontally fixed on the measuring claws of the height gauge 2 by fastening screws; the V-shaped surfaces of the two double-layer V-blocks are placed relatively on the magnetic plate 3.

[0019] Moreover, the nylon V-block 5 and the iron V-block 4 are identical in shape and size.

[0020] Moreover, the upper layer of the double-layer V-block is a nylon V-block 5, and the lower layer is an iron V-block 4.

[0021] Moreover, the double-layer V-block is closely attached to the shaft parts through the nylon V-block 5 on the upper layer.

[0022] Furthermore, the magnetic plate 3 fixes the double-layer V-shaped block by magnetic force.

[0023] Embodiment: Use fastening screws to connect and assemble the iron V-block 4 and the nylon V-block 5 to form two double-layer V-blocks, place the iron V-block 4 of the two assembled double-layer V-blocks downward on the magnetic plate 3, then place the shaft part 6 to be tested on the double-layer V-block, make the V-shaped surfaces of the two double-layer V-blocks close to the outer circle of the shaft part 6, then lock the magnetic plate 3, fit the height ruler 2 equipped with the dial indicator 1 to the tested position of the shaft part 6, make the probe 7 of the dial indicator 1 contact with the shaft part 6, then adjust the dial indicator 1 to zero position, manually rotate the shaft part 6 for one circle, the dial indicator 1 will change with the rotation of the shaft part 6, record the maximum value on the dial indicator 1, this value is the actual run-out of the inspected position, finally determine whether the run-out of the shaft part 6 is qualified according to the drawing.

Claims

1. A device for measuring the runout of special shaft parts, comprising at least a magnetic plate, a V-block, a height gauge and a dial indicator, characterized in that: The V-block comprises two iron V-blocks and two nylon V-blocks. An iron V-block and a nylon V-block are connected and assembled by fastening screws to form two double-layer V-blocks. A probe is provided at the lower part of the dial indicator. The dial indicator is horizontally fixed on the measuring claws of the height gauge by fastening screws. The V-shaped surfaces of the two double-layer V-blocks are placed oppositely on the magnetic plate.

2. The device for measuring the runout of special shaft parts according to claim 1, characterized in that: The nylon V-blocks and the iron V-blocks are of the same shape and size.

3. The device for measuring the runout of special shaft parts according to claim 1, characterized in that: The upper layer of the double-layer V-block is a nylon V-block, and the lower layer is an iron V-block.

4. The device for measuring the runout of special shaft parts according to claim 1, characterized in that: The double-layer V-block is pressed against the shaft parts through the nylon V-block on the upper layer.

5. The device for measuring the runout of special shaft parts according to claim 1, characterized in that: The magnetic plate fixes the double-layer V-blocks by magnetic force.

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