Electric heating – Metal heating – Cutting or disintegrating
Patent
1977-12-13
1980-09-23
Reynolds, B. A.
Electric heating
Metal heating
Cutting or disintegrating
B23P 112
Patent
active
042244951
ABSTRACT:
A movement control apparatus, which can be constructed as an accessory, provides in addition to the primary process-controlled movement of the electrode circular a secondary movement. The secondary movement is imparted to the electrode through a drive arm fixed at one end to the bottom slide of a cross-slide on which the electrode is also fixed and attached pivotably at the other end to an eccentric point of a rotating spindle. The mechanism for rotating the spindle is so designed that the degree of eccentricity of the eccentric point may be adjusted mechanically while the spindle is rotating. The eccentricity may also be controlled by the action of a cam follower which runs along a template, so that the circular movement of the electrode is controlled by the template in a copying mode. Further described are means for deflecting the primary process-controlled movement of the electrode to the secondary movement, so that the secondary movement can be process-controlled by the existing control mechanisms of the machine.
The present invention relates generally to apparatus for spark erosion machining, also known as EDM (Electrical Discharge Machining). It relates particularly to EDM apparatus with the capability of supplementing the main, primary movement between the tool electrode and the workpiece with a secondary movement, such as one transverse to the primary movement.
REFERENCES:
patent: 3135852 (1964-06-01), Bentley et al.
patent: 3809852 (1974-05-01), Weber
patent: 3919516 (1975-11-01), Ullmann et al.
patent: 4104500 (1978-08-01), Wyss
Fricker Paul
Knecht Hans-Rudolf
Pierobon Giampaolo
Schumacher Bernd
Vogler Gottfried
A.G. fur industrielle Elektronik AGIE Losone b. Locarno
Reynolds B. A.
Shaw Clifford C.
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