Abrasive band finishing process for crankshaft journals etc. - involves measurement of journal size before and after each grinding cycle to determine required number of cycles.

摘要

The process relates particularly to workpieces such as crankshafts which have several journals to be finished and where the amount oversize may be different from one journal to another. In an abrasive band grinding process the abrasive band is pressed against the rotating journal by pressure shoes. At the end of a grinding cycle an indexing mechanism feeds unused abrasive band between the shoes and work. The size of a journal is measured before and after each grinding cycle and the measured value compared with the desired value for the journal. The difference between the measured and desired values is used to determine the number of grinding cycles required to bring the journal size inside the tolerance band. ADVANTAGE - Optimization of process.