Follow measuring method of crankshaft connecting rod roundness

A technology of a crankshaft connecting rod and a measuring method is applied in the directions of grinding machine parts, workpiece feed motion control, machine tools designed for grinding workpiece rotating surfaces, etc. and other problems, to achieve the effect of simple structure, good economy and convenient measurement

Inactive Publication Date: 2008-10-08
潘旭华
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Problems solved by technology

The existing on-line measurement is generally carried out by using a three-point roundness meter, but

Method used

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  • Follow measuring method of crankshaft connecting rod roundness

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Embodiment Construction

[0008] Such as figure 1 As shown, a follow-up measurement method for crankshaft connecting rod neck roundness is characterized in that:

[0009] A. Install the measuring head 3 on the wheel frame guide rail 1 from the measuring head seat 2, and the vertical surface of the measuring head is close to the outer surface of the connecting rod journal 4 of the crankshaft 5 to be tested;

[0010] B. Select a crankshaft connecting rod neck test piece, rotate the crankshaft 5, and move the grinding wheel frame guide rail 1 synchronously when the crankshaft rotates, drive the measuring head base to move horizontally, measure the horizontal moving distance of the measuring head 3 online, and this distance is the test The roundness error of each angle of the connecting rod neck measured online includes the fixed roundness error and the actual test roundness error caused by the movement error of the wheelhead guide rail and the crankshaft rotation angle error. Roundness error of connectin...

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Abstract

The invention belongs to the field of the mechanical processing, in particular to a follow measurement method for roundness of a crankshaft pin, which is characterized in that a measuring head is arranged on a grinding carriage guide rail, and the vertical plane of the measuring head leans tightly against the external surface of the crankshaft pin to be measured; a crankshaft pin specimen is selected, and an on-line measurement roundness error at various angles of the connecting rod journal specimen is measured on line; the actual roundness error is deducted from the measured roundness error of the specimen so as to obtain fixed roundness error of the measuring system; the data about the fixed roundness error are input into the measuring system, the workpieces are arranged, and the actual roundness error of the connecting rod journal workpiece can be obtained by automatically subtracting the fixed roundness error of the workpiece from the measuring roundness error of the workpiece, and the numeral system carries out another machining to eliminate the workpiece roundness error, according to the correction program data of the actual roundness error of the workpiece. The follow measurement method of the invention adopts single-point measurement, thus having the advantages of simple structure, convenient measurement, being scientific and rational and having good economy.

Description

technical field [0001] The invention belongs to the category of mechanical processing methods, in particular to a follow-up measurement method for the roundness of crankshaft connecting rod necks. Background technique [0002] Crankshafts are often used in mechanical transmission, and the follow-up grinding of crankshaft connecting rod neck roundness has a broad market application prospect. However, due to the generally high requirements for crankshaft connecting rod neck roundness, online measurement is necessary, so that the CNC system of the machine tool can be based on The measurement results correct the data program to achieve a higher roundness of the pin neck. The existing on-line measurement is generally carried out with a three-point roundness meter, but the device has a complex structure, high cost, and a high failure rate during use. Contents of the invention [0003] The object of the present invention is to aim at the deficiencies of the prior art, and provid...

Claims

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Application Information

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IPC IPC(8): B24B49/04B24B5/42
Inventor 潘旭华
Owner 潘旭华
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