Specifications

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Southwestern Industries, Inc.
TRAK LPM Programming, Safety, & Operating Manual
3.3.12 Tool Changer
The tool changer is an armless carousel type automatic tool changer that has a capacity of
16 tools. The carousel is mechanically indexed by means of a Geneva mechanism. The
position of the carousel is controlled by a signal from Home Position Sensor. As an
additional safety feature, the ATC also has Tool Detect Sensor at the “ready position”.
This means if a tool is sitting in this position and the control tries to put the tool in the
spindle into this spot, an error will be generated by the control.
3.3.13 Drive Train, Axes
Each axis (X, Y and Z) rides on precision linear guideways, with four preloaded
recirculating ball carriages. Each axis is moved via an 8 mm pitch ballscrew. The axis
motors direct drive the ballscrew.
3.3.14 Worktable
The LPM table utilizes Ball Lock® technology as well as conventional T-bolt
construction. Each Ball Lock mechanism has a hold-down force of 2250 lbs when 35
in/lbs of torque is applied to the screw. The software on the LPM is based on these ball
locks as we ask the user which ball lock location they wish to run the part on. The 3
locations are called ball lock A, B and C.
3.3.15 Limit/Home Switches
Each axis has a limit switch, which serve two purposes, to protect the LPM in the event
of an over-travel situation in either the positive or negative direction, and secondly for the
purpose of homing the machine. The following table describes where the cams are that
trigger the limit switches.