Process Design Manufacturing Processes 2

In order to make a sufficient analysis of the grinding process, a number of influ­ences must be taken into account, and their relevance of their respective effects on the process must be evaluated. Some essential input parameters are the grinding tool, the workpiece to be machined, the variables as well as influences derivable from cooling Read more

Planar Lapping Manufacturing Processes 2

Planar lapping is used to create flat surfaces with high surface qualities. Two method variations are distinguished. In the first case, the workpieces are freely movable and are guided over the lapping disc; in the second case they are placed in so-called carriers with restricted guidance in order to avoid reciprocal damages. The workpieces are Read more

Centreless Plunge Grinding Manufacturing Processes 2

As precision components in internal combustion engines, valves control the neces­sary gas flow by blocking cross-sections of flow. While inlet valves are subject mainly to mechanical stresses, outlet valves are also exposed to thermal stress and chemical corrosion. Valves are therefore manufactured from various materials de­pending on their function. In the case of many high-stress Read more

Zonal Polishing Methods Manufacturing Processes 2

Three components are necessary for zonal polishing (Fig. 8-21): • The use of a suitable measurement technique is necessary to measure the re­spective surface topography. The data are compared to the target geometry so the respective fault profile can be acquired. Interferometric methods find par­ticularly broad use for the measurement of geometries. • The measured Read more

Cutting with Unbonded Grain Manufacturing Processes 2

Cutting wire lapping (Fig. 9-11) is these days the dominant and most widespread technique. It is used especially in mass markets. Although this method has been utilised industrially for some time, knowledge of the process is still mostly of an empirical nature. Theoretical findings and process models exist only to a limited extent and are Read more

Detecting Chattering Manufacturing Processes 2

Chattering represents one of the main causes of quality problems in grinding, be­cause the dimension and shape accuracy as well as the surface quality are influ­enced negatively [BAUS03, KARP01]. Chattering can be traced back to self­excitation. In the grinding process, the main causes of forced vibrations are primarily im­balance and grinding wheel eccentricity. Further possible Read more