Electrical discharge machining apparatus including a shield for preventing deformation by temperature
AssigneeInstitute of Technology Precision Electrical Discharge Works
InventorShoji Futamura
Life of this patent
Estimating the term…
Abstract
An electrical discharge machining apparatus having an electrode and a work table on which a workpiece is placed for machining the workpiece by causing an electric discharge between the electrode and the workpiece. A shielding cover for forming a substantially enclosed predetermined space around main structural members comprising the electrical discharging apparatus is provided. A gas is introduced into the space formed by the shielding cover so as to keep the temperature in the space at a constant level.
Claims6
An electrical discharge machining apparatus comprising:
- an electrode;
- a column supporting said electrode;
- a work table for support of a workpiece machining being formed by an electrical discharge between said electrode and said workpiece, said column being formed of non-magnetic materials, wherein said non-magnetic materials includes ceramics.
An electrical discharge machining apparatus comprising:
- a bed, a column formed of non-magnetic material, said column being connected to said bed;
- a work table for supporting a workpiece to be machined, said work table being connected to said bed;
- an electrode connected to said column for closing an electric discharge between said electrode and said workpiece;
- and, a shielding cover surrounding said column and said bed for forming a substantially enclosed, predetermined space, said shielding cover having gas inlets for introduction of a gas into said predetermined space in the interior of said shielding cover to maintain the temperature in said predetermined space at a constant level, wherein said non-magnetic material is a ceramic.
An electrical discharge machining apparatus comprising:
- a bed;
- a column formed of non-magnetic material, said column being connected to said bed;
- a work table for supporting a workpiece to be machined, said work table being connected to said bed;
- an electrode connected to said column for closing an electric discharge between said electrode and said workpiece;
- and, a shielding cover surrounding said column and said bed for forming a substantially enclosed, predetermined space, said shielding cover having gas inlets for introduction of a gas into said predetermined space in the interior of said shielding cover to maintain the temperature in said predetermined space at a constant level, wherein said shield surrounds an arm attached to said column for support of said electrode.
An electrical discharge machining apparatus comprising:
- a bed formed of non-magnetic materials;
- a column attached to said bed, said column being formed of non-magnetic materials;
- a work table connected to said bed, said work table being formed of non-magnetic materials, said work table being adapted to support a workpiece for performing machining on the workpiece;
- an arm connected to said column, said arm being formed of non-magnetic material;
- an electrode supported by said column and said arm, said electrode adapted to cause an electric discharge between said electrode and said workpiece;
- a shielding cover surrounding said arm, column, and bed for forming a substantially enclosed, predetermined space;
- and, gas inlet means for introducing gas into said predetermined space for maintaining the temperature in said space at a predetermined constant level.
Dependencies are inferred from the claim text.