This chapter provides an overview of the basic controls of the PCNC mill.
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NOTE: Jogging is not permitted during G-code program execution or MDI moves.
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Jog Shuttle
The Jog Shuttle (PN 30616), shown in Figure 4, is an optional accessory that many operators find increases productivity, especially on short-run jobs requiring extensive setting up of the workpiece and tooling.
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Ensure the Spindle Rangebutton’s LED light (see Figure 5) correctly corresponds to the spindle belt position, either Hi or Lo; click to toggle between the two positions. For more information on the procedure to change belt position, refer to “Changing Spindle Speed Range”section later in this chapter.
NOTE: A mismatch between the Spindle Range button and actual spindle belt position will result in the commanded speed being different from the indicated RPMs. See table below for available speed ranges for each spindle option.
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Each PCNC mill has two speed ranges as outlined in the table below.
Low | High | |
PCNC 1100 | 100-2000 | 250-5140 |
The range change is performed by moving the spindle belt from the top pair of pulleys (high speed range) to the lower pair of pulleys (low speed range).
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Power off mill according to power off/on procedure detailed in chapter 3, Installation.
Open spindle door.
Unlock motor mounting plate:
On a PCNC 1100: Use the rear handle (see Figure 6)
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Pull spindle motor forward. The spindle belt slackens.
Move the spindle belt from one pulley to another. (see Figure 6)
Re-tighten the spindle belt so that there is approximately 1/8”-1/4” of belt deflection midway between the pulleys with a firm finger press.
Lock the motor mounting plate and stow handles (if equipped) in the vertical position.
Tool Holders
This section describes using tooling compatible with the standard R8 spindle. For more information on other spindle options, refer to the product-specific documentation.
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Work must be secured to the table prior to machining. Each PCNC mill has three 5/8” T-slots that run parallel to the X-axis. The slots are precision ground to:
Center Slot | Outer Slots |
-0.00” + 0.004” | 0.000” + 0.008” |
A 5” vise is recommended. Tormach offers the following vises:
PCNC 1100 |
PN 31759 or PN 30553 |
For more information on proper setup and use of the 5” vises, refer to documentation that ships with product.
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