EP 0481935 A2 19920422 - Method and apparatus for the post-process check of the workpieces in a double-plate lapping machine.
Title (en)
Method and apparatus for the post-process check of the workpieces in a double-plate lapping machine.
Title (de)
Verfahren und Gerät zum Kontrollieren von Werkstücken auf einer zweiseitigen Läppmaschine nach deren Bearbeitung.
Title (fr)
Méthode et appareil pour le contrÔle dans une machine à roder des deux cÔtés d'une pièce après son usinage.
Publication
Application
Priority
IT 4838990 A 19901019
Abstract (en)
A method and an apparatus for the post-process check of the workpieces machined by a double-plate lapping machine, in which the upper plate is associated to means controlling the lowering and the pressure applied on the workpieces, and the lower plate is provided with a probe able to detect the spacing from the upper plate and to feed a signal representing said spacing to an electronic meter, in which the corrected value F(K) obtained from the difference between the heights of the workpieces at the end of the first two machining cycle is set, said value being compared with the average of the values provided by a feeler pin detecting the thickness of four lapped workpieces located at diametrally opposed positions at the end of each machining cycle so as to provide a further correction signal considering the variable parameters from cycle to cycle, said correction signal being fed to the central data processing unit for the resetting thereof. <IMAGE>
IPC 1-7
IPC 8 full level
B24B 37/08 (2012.01); B24B 49/02 (2006.01); B24B 49/03 (2006.01); B24B 49/16 (2006.01)
CPC (source: EP)
B24B 37/08 (2013.01); B24B 49/02 (2013.01); B24B 49/03 (2013.01); B24B 49/16 (2013.01)
Designated contracting state (EPC)
CH DE FR GB LI
DOCDB simple family (publication)
EP 0481935 A2 19920422; EP 0481935 A3 19920902; IT 1243537 B 19940616; IT 9048389 A0 19901019; IT 9048389 A1 19920419
DOCDB simple family (application)
EP 91830440 A 19911016; IT 4838990 A 19901019