46
96-8000 Rev AC
May 2010
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Toe Clamp
Chuck
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Tool Functions (Tnn)
The Tnn code is used to select the next tool to be placed in the spindle from
the tool changer. The T address does not start the tool change operation; it
only selects which tool will be used next. M06 and will start a tool change op-
eration, for example T1M06 will put tool 1 in the spindle.
Note: There is no X or Y motion required prior to performing a tool change
and, however, if the work piece or fixture is large, position X or Y prior to a
tool change in order to prevent a crash between the tools and the part or
fixture.
A tool change can be commanded with the X, Y, and Z axes in any position.
The control will bring the Z axis up to the machine zero position. The control
will move the Z axis to a position above machine zero during a tool change but
will never move below machine zero. At the end of a tool change, the Z axis will
be at machine zero.
Tool Holders
There are number of different spindle options for the Haas mills. Each of these
types requires a specific tool holder. The most common spindles are the #40
and #50 taper. 40 taper spindles are divided into two types, BT and CT; these
are referred to as BT40 and CT40. The spindle and tool changer are only ca
-
pable of holding one type.
Pull Studs
A pull stud or retention knob is required to secure the tool holder into the
spindle. Pull studs are threaded into the top of the tool holder and are specific
to the type of spindle. The following chart describes the pull studs used on the
Hass mill. Do not use the short shaft or pull studs with a sharp right angle (90-
degree) head; they will not work and will cause serious damage to the spindle.
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