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Another common type of work holding on a milling machine is clamps. If you have an
odd shaped work piece or a large one that does not fi t into a mill vise, you can clamp it
directly to the mill table or fi xture plate using clamps. Clamps are usually a bar type with
an oval slot cut through the bar for a bolt and a tapped hole in the bar for a jackscrew. The
jackscrew is set to be slightly longer than your work piece is tall. A small shim made of soft
material .05" minimum thickness should be placed between the jackscrew and the machine
table to prevent the screw from damaging the table when the clamp is tightened.
Set the clamp on top of the work piece and the jackscrew and shim on the table. Place
a bolt through the slot in the clamp and screw it into a tee nut in the table's tee slot and
tighten the bolt to increase the clamping pressure. A series of clamps around your part
should hold it in place during machining.
If you need to machine completely through the part, you will need to get the work piece off
of the table. In this case, place blocks between your work piece and the table at the same
locations where your clamps are. The blocks need to be directly under the clamps and all
the blocks need to be the same height.
Another method of getting your work piece up off the table is to make a fi xture plate. The
fi xture plate can be bolted to the machine table using tee nuts and bolts. Drill and tap holes
where the clamps need to be. Clamp your part to the fi xture plate as described above.
A third method of work holding is for round, cylindrical work pieces. A chuck with movable
clamping jaws can be mounted to the machine table. The chuck works like the small chucks
on a drill press or a drill motor. A chuck key is used to turn a screw in the side of the chuck,
which moves all the clamping jaws simultaneously to clamp on a round work piece.
For information on other types of work holding or more information on the types discussed
here, contact your local distributor of industrial supplies.
S
S
AFETY
WITCH
The TM-1 and TM-2 are equipped with a hand held safety switch. The button must be
pressed any time automatic machining is taking place. Releasing the switch causes the
spindle and axes motion to stop. In order to resume automatic machining, the button and
Cycle Start must be pressed (it is not necessary to hold Cycle Start down). The TM-1P
is not equipped with the safety switch as the machine is fully enclosed. However, all axis
motion stops and the spindle slows if the enclosure doors are opened during operation.
P
U
OWER
P
The mill is powered up by pressing the "Power On" button. Press "Power Up / Restart" and
the mill will automatically fi nd home.
I
NTRODUCTION
The Haas Toolroom Mills are supplied with the Intuitive Programming System (IPS). This
is displayed once the mill is powered up and homed. This screen shows the X, Y and
Z position of the mill as well as the spindle speed. This programming system helps the
operator set up operations such as setting tool and work offsets, drilling and tapping cycles,
circular and rectangular pocket milling, without knowledge of G-code programming.
96-0041 Rev T
January 2009
5 . OPERAT I ON
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