Abrasive tool making process – material – or composition – With carbohydrate or reaction product thereof
Patent
1988-12-13
1990-06-05
Schmidt, Frederick R.
Abrasive tool making process, material, or composition
With carbohydrate or reaction product thereof
5116576, 51129, B24B 4900
Patent
active
049302620
ABSTRACT:
In the control process for surface grinding a measuring sensor of a stationary electronic measuring unit with a memory determines the actual heights of a group of workpiece blanks in a precision grinding machine on workpiece mounts on a switchable spindle head relative to a reference point on the appropriate spindle. To avoid thickness errors due to tolerance-dependent variations of the workpiece mounts at least one reference workpiece of an accurately predetermined thickness is placed on the individual workpiece mounts, and is measured in the same way as the workpiece blanks. Height measurements of the reference workpiece are made on the workpiece mounts relative to the reference points and are fed to the memory as setpoint values. Then the measuring unit compares the actual height values of the workpiece blanks on the workpiece mounts with the setpoint values in the memory for these particular workpiece mounts and according to the difference between both actual and setpoint values controls the surface grinding.
REFERENCES:
patent: 2840957 (1958-07-01), Warden et al.
JP Abstract 58-22659 2/10/83, Masao.
Dubno Herbert
Maschinenfabrik Ernst Thielenhaus GmbH
Rachuba M.
Schmidt Frederick R.
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