Electroerosion apparatus having a cyclically movable and variably inclined wire electrode
AssigneeIng. C. Olivetti & C., S.p.A.
InventorsPiero Pomella, Luciano Lauro, Pier Gianni Scotti
Life of this patent
Estimating the term…
Abstract
An electroerosion apparatus utilizing a wire electrode supported at opposite sides of a workpiece is adapted to cut a given profile in the workpiece with a rake by shifting the electrode supports and thereby inclining the electrode with respect to the cutting plane. The electrode supports are at the end of two arms which can move in coordinate axes in conjunction with the movement of the workpiece table to define the profile by means of orthogonal coordinate control.
Claims32
Apparatus for cutting a metal workpiece by electroerosion, comprising:
- an electrode tool maintained by two tool supports on opposite sides of a workpiece to be cut;
- controllable means for adjusting the position of at least one of said tool supports for variably inclining said tool with respect to a reference plane associated with said workpiece to position said tool at a cutting angle;
- means for relatively displacing said workpiece and said one tool support along a pair of coordinates for cutting said workpiece along a predetermined path defined by variable acceleration components of the predetermined path;
- and
- means solely responsive to said variable acceleration components for controlling said adjusting means in accordance with said variable acceleration components to maintain the tool at a cutting angle during the cutting along said predetermined path.
Apparatus for cutting a metal workpiece by electroerosion in which an electrode tool is maintained by two tool supports on opposite sides of a workpiece to be cut, comprising:
- a movable workpiece support for moving said workpiece relative to said electrode tool on a reference plane associated with said workpiece and defined in accordance with two orthogonal coordinate axes;
- feed means responsive to position signals for effecting said relative movement of said workpiece support and said tool for enabling a predetermined profile to be cut in said workpiece;
- adjusting means responsive to command signals for adjusting the position of at least one of said tool supports relative to the other for enabling said electrode tool to have a cutting angle with respect to the perpendicular to said reference plane;
- interpolating means fed on the basis of a path defined in digital form on a record member and on the basis of the voltage between the tool and the workpiece for generating said position signals defining the movements of said workpiece support with respect to said orthogonal coordinate axes as a function of variable acceleration components along said axes to effect the cutting of the workpiece along said profile according to the defined path;
- and
- intermediate means solely responsive to said variable acceleration components for generating said command signals which are supplied to said adjusting means for adjusting the position of said tool supports to maintain the electrode tool at a cutting angle as said workpiece is cut along the profile.
Dependencies are inferred from the claim text.