Рубрика: Manufacturing Processes 2

Machining Time

The work result, especially workpiece roughness, is dependent in particular on the machining time. The roughness, resulting from pre-machining has to be improved by the honing process and leads to a typical temporal course (Fig. 7-18). Initially the peaks of roughness are removed quickly. After a relatively short machining time, the surface roughness asymptotically approaches […]


As discussed above, the lapping process is influenced by numerous technologi­cally-based marginal conditions. An overview of these is given in Fig. 8-10. Kinematics Lapping plate Slurry Machine Workpieces • Rotational • Material • Grain material • Normal force • Material speeds • Slot configu- • Grain size • Machine • Geometry • Dimensions ration and […]

Cutting with Bonded Grain

In the case of cutting wire grinding, wires with bonded abrasive material, usually diamond, are used (Fig. 9-10). Galvanic or synthetic resin-bonds have so far gen­erally been used for the bond system. By using bonded grains, we can do away with an additional lapping suspension. In this process, material removal is very similar to that […]

Multistage Processes

High material removal rates and the highest surface quality are mutually exclu­sive. For this reason, shortening the machining time by increasing the material re­moval rate is faced with severe limitations when the material removal rate is con­stant during the process. In this case one speaks of a single-staged process. In roughing (Fig. 6-124), the volume […]


The aim of coplanar lapping is to achieve high flatness in combination with a con­sistent surface quality for all workpieces. Also, the percent contact area is in­creased by levelling the roughness peaks. On account of these properties, lapping is often used in the finishing of ceramic sealing rings. In the following, we will in­troduce the […]

Cutting with Unbonded Grain

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 […]