Specifications

Southwestern Industries, Inc.
ProtoTRAK

SMX K2, K3, K4 & Retrofit Safety, Installation, Maintenance, Service & Parts List Manual
40
Explanation: For straight line cuts along the X or Y-axis, the control is designed to lock
the motor of the axis that is not moving. A taper is created when there is play in the
system. The force of the tool shoves the table or saddle out of position.
The system will respond to being pushed out of position by making an adjustment at the
end of the move.
An unwanted tapered cut is the result of looseness in the system.
Do the following Service Codes and document values:
• Code 33 Software Identification. This is needed if you call SWI Customer Service.
• Code 11 Measure's the backlash in the system. Only used on machines with Dual
Feedback systems.
• Code 12 Feed Forward Constant.
• Code 127 Measure's the backlash in the system. Only used on machines with single
Feedback.
• Code 128 Enter backlash compensation.
Possible Cause
Check This
Machine Tool & Setup problem Check for any looseness in the setup (Tool, Tool holder, Part,
Vise, or Fixture). See Machine Tool & Setup Section 4.1
X and Y Gibs are loose Check the adjustment of the X and Y Gibs using the X and Y
Gib adjustment procedures. See Section 5.2.1
X and Y-axis Drive Trains are loose Check Repeatability using the Repeatability and Positional
Accuracy procedure. Step by step, carefully inspect the Drive
Train for any looseness. It may be necessary to disassemble
and then reassemble the Drive Train. See Mechanical Drive
Train (X, Y) Section 4.2
3.1.4 Parts Have Incorrect Dimensions
Parts are being machined with dimensions that are different than those programmed.
Typical accuracy expectations should be:
• Circles: 0.002” TIR over 3.00” DIA
• Positional Accuracy: +/- 0.0005"
• Repeatability: 0.0005"
Note: The typical slideway-milling machine is not capable of achieving more precise results.
Although careful adjustments to a new milling machine have produced better results, you should
not expect the same level of accuracy from an older or worn machine.
Furthermore, the system should be expected to repeat within the resolution of the
displayed DRO numbers of 0.0005”.
Do the following Service Code:
• Code 33 Software Identification. This is needed if you call SWI Customer Service.
• Code 123 Calibration.
• Code 11 Measure's the backlash in the system. Only used on machines with Dual
Feedback systems.