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Abstract

The nature of the contact behaviour between a grinding wheel and a workpiece in the grinding process was investigated by measurement and a model evaluation. In Part 1 of this paper measurement methods for assessment of contact length were investigated. The applied power source (APS) method was judged to give the most reliable measurement of contact length. The interpretation of contact length measurements is discussed. The contact signal can be distinguished in three stages which may correspond to the action of an active grain through the contact zone: cutting, ploughing and rubbing. The definition of contact length in grinding is discussed and it is found that it is difficult to use a single value to represent it. The measured results confirm that the measured contact length in grinding is considerably longer than the geometric contact length. There is considerable evidence that the measurements represent real contact phenomena.

Keywords

grinding measurement contact length

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Contact length in grinding: Part 1: Contact length measurement

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