204 Machine Drawing
dharm
d:\N-Design\Des14-1.pm5
14.4.2 Box Jig
Figure 14.6 shows the half sectional view from the front and the view from above of the
assembled drawing of box jig. This jig is also provided with a latch for clamping and supporting
the work piece when used as a turn-over jig. The use of different types of bushes is also indicated
in the figure.
Clamp
Latch
Work
piece
Four feet
Four feet
Fig. 14.6 Box jig
14.5. Fixture Components
14.5.1 Fixture Base
It is used to locate the fixture components and the work piece. It is firmly fastened to the
machine table with clamps. In addition, they may be provided with tongues (tenons) that enter
table T-slots for aligning the fixture properly with respect to spindle axis.
14.5.2 Clamps
Fixture clamps, apart from clamping the work piece, are required to resist the cutting forces.
Hence, they must be sized heavily than the jig clamps and must be properly located.
