Power Drawbar Operation

Change Tools With the Power Drawbar

Ejection Hazard: If a tool is released from a turning spindle, it can become a dangerous projectile, causing death or serious injury. You must wait until the spindle is completely stopped before pressing the Release Tool button. Never press the Release Tool button while the spindle is turning.

  1. While using one hand to support the Tormach Tooling System (TTS) tool holder in the spindle, use the other to press and hold the Release Tool button.

    The Power Drawbar activates and releases the tool holder in the spindle. Remove the tool from the spindle.

    Pinch Hazard: If your fingers are in the Tormach Tooling System (TTS) collet as it closes, it can crush or pinch your fingers. You must keep your fingers clear of the Tormach Tooling System (TTS) collet while you're changing tools. Never put your fingers into an unclamped Tormach Tooling System (TTS) collet.

  2. Put a new tool holder into the spindle.

  3. Let go of the Release Tool button.

    The Power Drawbar reverts to clamp mode and secures the tool in the spindle.

Power Drawbar Best Practices

Tool Holding Force

The Power Drawbar is designed to provide more than sufficient tool holding force to resist regular cutting loads. Machining practices outside of these situations may result in tool holder pull-out.

While operating the machine, avoid the following conditions:

  • High chatter machining
  • High cutter engagement (chip load) combined with high helix angle cutter geometries

Clamp Mode

The Power Drawbar is in clamp mode when a tool is secured in the spindle.

While in clamp mode, make sure that there's always a tool in the collet. The collet will eventually wear if you retract the Power Drawbar to clamp mode with no tool, and could shorten its service life.

In the event of an air pressure loss, the power drawbar reverts to clamp mode.