Рубрика: Manufacturing Processes 2

External Form Grinding

When manufacturing a CVT shaft (continuous variable transmission), an conical area is machined. This component is used in automobile transmission. There is a belt on the cone that transfers force in a frictionally engaging manner. The trans­mission can be altered continuously by the position of the belt on the cone. Ac­cordingly, the cone is a […]

Workpiece Structure

In honing, the work result must also be seen as a function of the initial state of the workpiece. Not only do the properties of the workpiece material play a role in this, but also the initial conditions resulting from pre-machining. As in grinding, the workpiece surface has an influence on the resulting surface roughness […]

The Abrasive Removal Hypothesis

The abrasive removal hypothesis states that the material removal occurring during the polishing process is realised because of an abrasive process in which the gen­erally harder abrasive penetrates into the softer workpiece surface and removes material in a similar way as chipping. Abrasive removal is also possible when hard abrasive particles are inserted be­tween two […]

. Sensors for Process Monitoring

9.2.1 Force Sensors In research, grinding force components are primarily measured by means of piezo­electric sensors [BAUS03, KARP01]. However, an exact force measurement with piezo-electric force sensors is expensive and is thus used industrially only as an exception. For this reason, force sensor plates or rings are being used increasingly in industrial praxis which are […]


Because of the high requirements on machining methods in metal-cutting produc­tion, not only are optimal tools indispensable, but also the optimal accessories needed in production, e. g. cutting oil or lubricants. The relatively large contact areas between tool and workpiece are decisive for the selection of cooling lubricants. Because of these large contact areas, the […]

The Chemical Hypothesis

The realisation that surface layers form during polishing led to the development of the chemical hypothesis. The chemical hypothesis is thus based on corrosion proc­esses taking place between the usually water-based polishing fluid and the work­piece surface. The “driving force” here is the chemical reaction, with the mechani­cal contribution being limited to the evacuation of […]

Current Sensors

One method that has been increasingly used in recent years for indirect force measurement is recording the effective power of the main spindle. It is defined as: P = V3U • I • cos p (10.1) The effective power of the main spindle is in direct relation with the torque de­livered at the shaft of […]