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

Surface Peripheral Plunge Grinding Manufacturing Processes 2

Turbine blades in jet engines are exposed to high levels of mechanical and thermal stress. The materials used must be highly heat-resistant and possess a high level of creep and rupture strength. Nickel-based forging alloys, those high-temperature properties are based on the mechanisms of mixed crystal, separation and carbide hardening, are especially suited to this. Read more

The Abrasive Carrier Manufacturing Processes 2

Abrasive carriers have the task of receiving the abrasive in the form of slurrys or pastes in even distribution on their surfaces and binding them loosely. The re­moval and smoothing process must be supported by the abrasive carrier without the latter being involved in the process directly. This is the condition, chiefly, for a profiled Read more

The Influence of Other Process Input Parameters and Boundary Conditions Manufacturing Processes 2

Besides the machine variables, additional parameters exist in belt grinding that in­fluence process behaviour and the output. This includes the force with which the belt is tightened and the form of embodiment of the contact element as well as the engagement of grinding fluids such as greases or cooling lubricants. The boundary condition of belt Read more

Tool Geometry Manufacturing Processes 2

Honing stone length plays an important role in the correction of shape errors. With respect to achieving the most accurate desired cylindricity, tools with long honing stones offer the best possibility for transferring their own cylindrical shape onto the workpiece. The arrangement in Fig. 7-21a shows that when the honing stone is too short the Read more

Inner Diameter Slicing Manufacturing Processes 2

One cutting method that is still widespread today is inner diameter (ID) slicing. In this method, a rotating steel cutting blade serves as the tool. These are fastened at their outer diameters, similarly to the clamping mechanism used for drums. The actual cutting operation takes place in the centre of the saw blade, the inner Read more

Other Lapping Methods Manufacturing Processes 2

The principle of peripheral external cylindrical lapping is illustrated in Fig. 8-4c. A slit in the tool enables the widening and narrowing of this sleeve-shaped tool design. This allows the intended working pressure and the desired dimensions to be adjusted. In order to improve the shape in terms of cylindricity and roundness, a rotational and Read more

Honing Manufacturing Processes 2

Honing is a cutting process with bonded grain and is used to improve the form, dimensional precision and surface quality of a workpiece under constant surface contact with the tool. In general, honing is applied after precision machining (e. g. grinding). Tables 7-1 and 7-2 illustrate the different honing techniques and their main fields of Read more