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Unbalanced crankshaft balanced grinding method

A crankshaft and balance technology, which is applied in the field of crankshaft processing technology, can solve the problems that the grinding quality of the crankshaft main journal cannot be guaranteed, the crankshaft cannot rotate at a uniform speed, and is unbalanced, so as to reduce quality risks and ensure the grinding quality.

Active Publication Date: 2015-03-25
CRRC ZIYANG CO LTD
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Problems solved by technology

[0003] The purpose of the present invention is to provide a balanced grinding method for unbalanced crankshafts in view of the above-mentioned problems, which mainly solves the problem that unbalanced crankshafts cannot rotate at a constant speed in a free state, and the grinding quality of the main journal of the crankshaft cannot be guaranteed. Through the simple and practical operation method, there is no need for process tests to find other process methods to grind non-uniform rotating crankshafts, which reduces the quality risk caused by the application of immature process methods and allows mature process methods to continue Effective use ensures the quality of crankshaft grinding

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[0030] All features disclosed in this specification, or steps in all methods or processes disclosed, may be combined in any manner, except for mutually exclusive features and / or steps.

[0031] Any feature disclosed in this specification (including any appended claims, abstract), unless otherwise stated, may be replaced by alternative features that are equivalent or serve a similar purpose. That is, unless expressly stated otherwise, each feature is one example only of a series of equivalent or similar features.

[0032] The balanced grinding method of the unbalanced crankshaft of the present invention is aimed at the special structure of the unbalanced crankshaft. When using the uniform rotation method for processing, it is necessary to change the non-uniform rotation of the unbalanced crankshaft into a uniform rotation method. The specific steps are:

[0033] Step 1) Analyze the overall structure of the unbalanced crankshaft, in which the main journal and the flange take the...

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Abstract

The invention discloses an unbalanced crankshaft balanced grinding method and belongs to the technical field of crankshaft machining. The unbalanced crankshaft balanced grinding method comprises the steps that 1. the whole structure of a crankshaft is analyzed; 2. the difference of the same portions on the crankshaft is found and marked; 3. whether non-uniform-speed rotating can be caused by the difference of the same portions is analyzed; 4. the unbalance amounts in various directions of the different portions are obtained by computing through moment; 5. the positions and the weights of needed balance weights in various directions of the different portions are determined; 6. corresponding balance weights are designed and manufactured and are connected to the corresponding positions of the crankshaft; and 7. the crankshaft rotates at constant speed, and grinding machining is carried out. According to the unbalanced crankshaft balanced grinding method, the technical problem that unbalanced crankshafts cannot rotate at constant speed under a free state so that the grinding quality on a crankshaft main neck cannot be guaranteed is mainly solved.

Description

technical field [0001] The invention relates to a crankshaft processing technology, in particular to a balanced grinding method in which the crankshaft cannot rotate at a uniform speed when the crankshaft rotates with the center of the main journal as the center of rotation in a free state. Background technique [0002] At present, the traditional crankshaft main journal grinding process mainly adopts the grinding process of the crankshaft in a free state. The crankshaft using this process method is connected to the universal joint on the grinding machine and when the universal joint drives the crankshaft to rotate It is necessary to rotate at a constant speed to control the runout, roundness, cylindricity and other related row position tolerances of the main journal of the crankshaft; the universal joint does not limit the degree of freedom, but is only used as a torque transmission device between the machine tool and the crankshaft. But especially for the unbalanced cranks...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24B5/42
CPCB24B5/425B24B5/428
Inventor 陈建波代金金赵桂梅丑洋洋
Owner CRRC ZIYANG CO LTD
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