August 2011 - Haas Automation, Inc.

elease the collet. If, after repeated use, the spring will not push the collet out, use
one of the following methods to remove the collet and lubricate the outside of the
collet with a light grease before re-inserting:
1. If the three-way air valve becomes clogged, exhaust airflow may be
restricted, causing the collet to stick in the taper. Leave the valve clamped,
and connect and disconnect the air supply several times.
2. If the above procedure does not free the collet, switch the valve to the
unclamped position, then gently tap the back end of the drawtube with a
plastic-faced mallet.
HA5C Tooling Locations
The HA5C is equipped with tooling points in order to speed setups. One of the
most time-consuming procedures in setup is aligning the head with the table. On
the mounting surfaces are two 0.500” bored holes on 3.000” centers. The holes on
the bottom surface are parallel to the spindle within 0.0005” per 6 inches and on
center within ±0.001”. By boring matching holes in the tooling plate, setups become
routine. Using tooling holes will also prevent the head from shifting on the mill table
when the part is subjected to heavy cutting forces.
On CNC mills, a machined stepped plug of 0.500” diameter one side and 0.625” on
the other comes with the Haas head. The 0.625” diameter fits into the T-slot of the
mill table. This will give quick parallel alignment.
Dual Axes Coordinate System
The layout of the A and B axes of the Haas five-axis control are shown in the
following figures. The A-axis is rotary motion about the X-axis, while the B-axis
determines rotary motion about the Y-axis. The right hand rule can be used to
determine axis rotation for the A and B axes. When placing the thumb of the right
hand along the positive X-axis, the fingers of the right hand will point in the direction
of tool movement for a positive A-axis command. Likewise, when placing the thumb
of the right hand along the positive Y-axis, the fingers of the right hand will point
in the direction of tool movement for a positive B-axis command. It is important to
remember that the right hand rule determines direction of tool movement and not
the table movement direction. For the right hand rule, the fingers will point opposite
of the positive rotary table movement. Refer to the following figures.
96-0315 Rev M
August 2011
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