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A crankshaft eccentricity measuring device and its measuring method

A technology of measuring device and measuring method, applied in the direction of measuring device, mechanical measuring device, using mechanical device, etc., can solve problems such as waste, achieve the effect of saving production cost and solving detection problems

Active Publication Date: 2018-09-14
CRRC QISHUYAN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, each crankshaft corresponds to several table reference blocks, resulting in a lot of waste

Method used

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  • A crankshaft eccentricity measuring device and its measuring method
  • A crankshaft eccentricity measuring device and its measuring method
  • A crankshaft eccentricity measuring device and its measuring method

Examples

Experimental program
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Effect test

Embodiment 1）

[0025] Such as figure 1 , figure 2 As shown, a crankshaft eccentricity measurement device includes a 90-degree V-shaped positioning block 1, a measuring cantilever 2, a dial indicator 3 and a connecting rod 4, and the 90-degree V-shaped positioning block 1 is connected to one end of the measuring cantilever 2 through the connecting rod 4 Below, the other end of the measuring cantilever 2 is provided with a dial indicator 3 , and the dial indicator 3 is provided with a dial indicator contact 5 .

[0026] use as figure 1 and figure 2 After measuring the eccentricity of the A-type crankshaft with the crankshaft eccentricity measuring device shown, and then using the same crankshaft eccentricity measuring device to measure the eccentricity of the B-type crankshaft of different crankshafts, as shown in image 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, the specific implementation steps are as follows: including the eccentricity measuring devi...

Embodiment 2）

[0033] Such as figure 1 and figure 2 As shown, a crankshaft eccentricity measurement device includes a 90-degree V-shaped positioning block 1, a measuring cantilever 2, a dial indicator 3 and a connecting rod 4, and the 90-degree V-shaped positioning block 1 is connected to one end of the measuring cantilever 2 through the connecting rod 4 Below, the other end of the measuring cantilever 2 is provided with a dial indicator 3 , and the dial indicator 3 is provided with a dial indicator contact 5 .

[0034] use as figure 1 and figure 2 After measuring the eccentricity of the A-type crankshaft with the crankshaft eccentricity measuring device shown, and then using the same crankshaft eccentricity measuring device to measure the eccentricity of the B-type crankshaft of different crankshafts, as shown in image 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, the specific implementation steps are as follows: including the eccentricity measuring de...

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Abstract

The invention relates to the technical field of detection of the eccentric throw of a crankshaft, and especially relates to an apparatus and method of measuring the eccentric throw of a crankshaft. The apparatus comprises a 90-degree V-shaped positioning block, a measuring cantilever and an indicating gauge. During detection, a gauge reference block of a to-be-measured crankshaft is also needed, the apparatus is calibrated and set to be zero on the gauge reference block, and then the apparatus measures the eccentric throw of an A type crankshaft. When the apparatus measures other types of crankshafts such as a B type crankshaft, distances b between the highest points of connecting rod necks of the A type crankshaft and the B type crankshaft and the intersection point of the 90-degree V-shaped positioning block are calculated by means of a mathematical formula shown in the description. According to a difference [delta]b of the distances b of the A type crankshaft and the B type crankshaft, the eccentric throw of the B type crankshaft is obtained through the apparatus and a conversion method. In this way, the step of making a gauge reference block specially for the B type crankshaft is not needed. The difficulty in detection of the eccentric throw of a crankshaft is solved, the problems in borrowing of apparatuses for different procedures of crankshafts with the same type and borrowing of apparatus for different type of crankshafts are solved, and the manufacture cost of the apparatus is greatly reduced.

Description

technical field [0001] The invention relates to the technical field of crankshaft eccentricity detection, in particular to a crankshaft eccentricity measuring device and a measuring method thereof. Background technique [0002] The crankshaft eccentricity measuring tool is a special tooling, which is composed of two parts: the eccentricity measuring device and the table reference block. The table reference block is an analog standard block made according to the size of the crankshaft to be measured. The measurement method is as follows: the eccentricity measuring device first aligns the meter on the reference block, finds the maximum value displayed by the dial indicator, adjusts the pointer of the dial indicator to zero, then moves the measuring device to the crankshaft to be tested, and uses the outer diameter of the main journal For circular positioning, read the value of the dial indicator by measuring the highest point of the connecting rod neck. The difference between...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B5/252
Inventor 刘德岭张云峰石国栋刘刚
Owner CRRC QISHUYAN CO LTD