FIELD OF THE INVENTION
This invention relates to holding of the delicate thin work piece on the wire
10 cut EDM machine for cutting the slot in the work piece on the wire cut machine.
BACKGROUND OF THE INVENTION
15 At the time of slotting operation on the work piece, it was difficult to hold
the job in the machine by the convention means of fastening. The slot on the
work piece has to align with the reference surface on the collar of the job. Due to
the size of the conventional clamping, it is difficult to dial the job with respect to
one of the axis of the machine.
20 The latest wire cut EDM fixture comprises a holding block that is perfectly
matched with job dimensions and shape. Clamps are mounted with washer and
Allen screws on both sides in the horizontal plane to restrict the movement of the
work piece in three directions. Locating and guide pins are provided on the fixture
for positioning of work piece with respect to wire. Four mutually perpendicular
25 surfaces are provided for the Dialling operation.
SUMMARY OF PRESENT INVENTION
30 In accordance with one aspect of present invention is to provide wire-cut
EDM fixture that facilitates easy slotting operation on the work piece.
In accordance with second aspect of present invention is to provide, a wire
cut EDM fixture that hold and position the work piece with respect to the wire
used in EDM wire-cut machine.
35 In accordance with another aspect of present invention is to provide a wire
cut EDM fixture adapted to fix on the bed of the wire curt EDM machine.
Annexure‐II
In accordance with another aspect of present invention is to provide a wire
cut EDM fixture that restricts the movement of work piece in three directions.
In accordance with another aspect of present invention is to provide a wire
cut EDM fixture having four mutually perpendicular 5 pendicular surfaces to align the work
piece with respect to wire of the wire cut EDM machine.
In accordance with yet another aspect of present invention, it is to provide
lighter wire cut EDM fixture.
In accordance with yet another aspect of present invention, it is to provide
10 a wire cut EDM fixture that can be utilized for the support of the work piece by
lesser skilled individual.
BRIEF DESCRIPTION OF THE DRAWINGS
15
The features and advantages of the present invention will become more apparent
and descriptive in the description when considered together with figures/flow
charts presented:
Fig. 1 is a sectional view of the holding block with locating pin and guiding pins
20 Fig. 2 is a top view of fixture with clamps, washer and Allen screw
Fig. 3 is the bottom view of the holding block
DETAILED DESCRIPTION
25
Referring Fig.1, Fig.2 & Fig.3 the present invention is an improved fixture
10 that holds and positions the work piece during slotting operation on wire cut
EDM machine.
This fixture is utilized for the support of the work piece and this is the best
30 technique to make slot in the job 7. Base of the fixture is the holding block 1 on
which other fixture parts is mounted.
Annexure‐II
Two clamps 2 are engaged for the secure clamping of work piece. This is
utilized in the horizontal plane at opposite sides to clamp the job 7 against the
fixture block.
Clamps 2 are used to hold the work piece 7 5 when Allen screws 5 and
washers 6 is used to tighten the clamps 2. Two Allen screws 5 are tightly secured
over clamps 2 and washers 6 in two holes 8. It holds the job 7 in the horizontal
plane.
Two guide pins 4 restrict rotational motion around vertical axis of location
10 pin 3.One locating pin 3 is used in hole 9 to fix the work piece at the central
position as it gives the perfect holding conditions for the work piece 7 to be
stable.
By the fixing the work piece 7 with the help of clamps 2, guide pins 4,
Allen screws 6, washers 5 and locating pin 3, the slotting operation can be done
15 very accurately by the EDM wire-cut machine maintaining all geometrical
parameters.
Wire cut EDM fixture 10 is used to hold and position the work piece 7 on
the bed of wire cut EDM machine. Machine is then dialled with respect to
machine axis.

WE CLAIMS:-
Accordingly, the description of the present invention is to be considered as illustrative only and is for the purpose of teaching those skilled in the art of the best mode of carrying out the invention. The details may be varied substantially without departing from the spirit of the invention, and exclusive use of all modifications which are within the scope of the appended claims is reserved. We Claim

1. A wire cut EDM fixture for holding the work piece and supporting the base of work piece on the fixture. The fixture comprising:
- Holding block of hard steel adapted to clamp on EDM machine bed and provides supporting surface to other sub components of fixture.
- One standard dowel location pin that guides the washer to remain in predetermined position with respect to slotting surface and prevent the X-Y direction movement of job.
- Clamps on the top of holding block to eliminate the possibility of loosening of job during slotting operation due to induced vibration of wire-cut machine and cutting forces.
- Two standard guide pins are provided to restrict rotation of washer along the locating pin center axis.
2. Clamps to securely hold the washer job in fixture.
3. The wire cut EDM fixture of claim 1 wherein, front and rear surface of the holding block are substantially flat and parallel.
4. The wire cut EDM fixture of claim 1 wherein, side face of the holding block is adapted to position and clamped on the machine bed.
5. The wire cut EDM fixture of claim 1 wherein, the holding block is having three counter-bore holes for fixing the job on fixture.
6. The wire cut EDM fixture of claim 1 further comprising clamps of non-metallic material tightened by Allen screws, provides clamping force to holding block.
7. The wire cut EDM fixture of claim 1 wherein, location and guiding pin for the accurate positioning of work piece. ,TagSPECI:As per Annexure-II