FIELD OF THE INVENTION
This invention relates to fixtures for Jig grinding machines. More
specifically, it relates to a fixture, which may be used to hold and locate round bar
of various size.
BACKGROUND OF THE INVENTION
This invention pertains to fixtures for holding the round bar on jig grinding
machine, and more particularly to a holding fixture adapted to support work to
be finished material and locate it relative to the cutting wheel. An object of this
invention is the provision of a new and improved round bar holding fixture for
jig grinding machine which is rigid, rugged, compact, and capable of high
precision holding of round bar. This fixture helps to maintain the dimension,
flatness and parallelism and maximize the productivity.
.
SUMMARY OF PRESENT INVENTION
In accordance with one aspect of present invention is to provide a fixture
that facilitates holding of a round bar in a jig grinding machine and supporting the
surface of the round bar thereof while the round bar is being grinded to a
predetermined shape and size.
In accordance with second aspect of present invention is to provide a
fixture for holding surface of round bar for accurate positioning on fixture with
respect to grinding face of fixture.
In accordance with another aspect of present invention is provided a
fixture for V block clamping of round bar.
In accordance with yet another aspect of present invention is to provide a
fixture for holding round bar adapted to be fixed on the bed of jig grinding
machine.
Annexure‐II
In accordance with yet another aspect of present invention is to provide a
more rigid fixture to hold the round bar.
. In accordance with yet another aspect of present invention is to provide a
fixture for holding round bar having a grinding face on base plate.
In accordance with another aspect of present invention is to provide a
lighter fixture to hold the round bar.
In accordance with yet another aspect of present invention is to provide a
fixture that can be properly and effectively utilized to hold and firmly fixed the
round bar by lesser skilled individuals.
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BRIEF DESCRIPTION OF THE DRAWINGS
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 Front view of grinding fixture.
Fig. 2 is a Top view of grinding fixture.
Fig. 3 is a Sectional side view (section B-B) of grinding fixture.
Fig. 4 is a Sectional side view (section A-A) of grinding fixture.
Annexure‐II
DETAILED DESCRIPTION
Referring to fig. 1, 2 & 3 present inventions is a grinding fixture 8 used to
hold and position the round bar and adapted for use on jig grinding machine.
The fixture 8 is designed to hold the round bar 9 within dimensional tolerance
with respect to grinding wheel.
Fixture 8 for holding a round bar 9 comprises a base plate 1 having a
substantially flat top surface A and bottom surface B. Base plate is made of mild
steel. Surface B of base plate, rest on jig grinding machine bed. Fixture 8 is fixed
on the jig grinding machine bed 10 with the help of two slots 11.
Round bar 9 positioned on the V block 2 and rest on the support plate 3.v
block 2 is fixed on the top surface A of the base plate 1 with two Allen head
screw 6.V block 2 positioned on the base plate with the help of dowel pin 9.
Round bar 9 clamped on V block 2 by clamp plate 5 with Allen head screw
10.Allen head screw 10 is used as clamping screw to provide clamping force to
clamp 5.
A spring 7 is providing under the V block 2 to adjust the height of the V
block 2. Adjustment in height is required due the variation in size of work piece to
be grind.

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 fixture for holding round bar and supporting the surface of round bar adapted to be positioned on work table of jig grinding machine. The fixture comprising:
- Base Plate adapted to be coupled to the bed of jig grinding machine and provides supporting surface to other sub component of fixture. Round bar rest and positioned on the top surface of base plate.
- V block used to hold and position the round cross section work piece.
- Support plate for supporting the base of round bar.
- Guide pin for the positioning the work piece.
- Clamp to securely hold the round bar on fixture.
2. The fixture for holding hollow round bar of claim 1 wherein, top and bottom surfaces of the base plate are substantially parallel.
3. The fixture for holding hollow bar of claim 1 wherein, bottom surface of the base plate is adapted to positioned and clamped on the jig grinding machine bed.
4. The fixture for holding round bar of claim 1 wherein, base plate is having two slots on base plate for fixing the fixture on machine bed.
5. The fixture for holding round bar of claim 1 further comprising a clamp plate for the clamping of work piece.
6. The fixture for holding round bar of claim 1 further comprising a V block for the holding and positioning of round bar.
7. The fixture for holding round bar of claim 1 further comprising a compression spring for the height adjustment of V block to accommodate various size of work piece. ,TagSPECI:As per Annexure-II