Detailed Procedure for Tool Setting on a Haas CNC Vertical Machining Center
This includes the complete process for setting the work coordinate system (X/Y axis) and tool length compensation (Z axis):
I. Preparation
1. Machine Status Check
• Ensure the machine has completed its startup warm-up and the spindle is idling normally.
• Clean the surface of the worktable and fixtures to prevent debris from affecting tool setting accuracy.
• Install and securely clamp the workpiece to ensure stable and accurate fixturing.
2. Tool Preparation
• Load the required tools into the tool magazine according to the program setup sheet.
• Confirm tool length and diameter, and ensure all tools are properly seated and locked in their holders.
• If using preset tools, ensure preset values are correctly recorded.
II. Work Coordinate System Setting (X/Y Axis Tool Setting)
1. Select the Correct Work Coordinate System (e.g., G54–G59)
• Enter the OFFSET page on the controller and select the appropriate coordinate system (e.g., G54).
2. Position the Tool for Edge Finding
• Mount an edge finder or use a tool with a known diameter.
• Manually move the spindle near the workpiece edge, then slowly jog it to make contact.
• Use the “Handle Jog” mode for precise movement.
3. Set X and Y Coordinates
• After locating the edge, use the controller’s “PART ZERO SET” or manual offset input to record the X or Y value.
• For edge finders, subtract half of the tool diameter from the measured position.
• Repeat for the other axis (X or Y) as needed.
4. Double Check
• Recheck both X and Y settings for accuracy.
• Make sure the tool tip aligns properly with the workpiece reference point.
III. Tool Length Compensation Setting (Z Axis Tool Setting)
1. Select a Reference Tool
• Choose one tool (often the first tool) as the reference to establish Z-zero.
• Ensure the tool is clean and seated properly.
2. Move to the Reference Surface
• Jog the reference tool to touch the top surface of the workpiece or a designated reference block (e.g., gauge block or tool setter).
• Use a feeler gauge or paper to detect contact carefully.
3. Set Z-axis Offset (Work Offset Z or Tool Offset Z)
• Record the machine coordinate Z-value and input it into the work offset (e.g., G54 Z) if touching the part surface.
• Alternatively, input the tool’s Z value into the tool offset page if using a height setter or probe.
• Make sure to zero out or properly reference the remaining tools to this Z datum.
4. Set Remaining Tool Lengths
• One by one, bring each tool down to the same reference surface.
• Record their respective Z values into the tool offset table (e.g., T01–T20).
• Use the “Measure” function if the machine is equipped with a touch setter or probing system.
IV. Final Check and Verification
1. Dry Run the Program
• Run the program in dry run mode or with a Z-axis height offset to verify all movements.
• Ensure tool changes, spindle directions, and movements are correct.
2. Double-Check Offsets
• Reconfirm work coordinate (G54–G59) and tool length offsets.
• Check for tool number consistency in the program.
3. Start Production
• After all values are verified and the machine is safe to run, start the machining cycle.
• Monitor the first few parts to ensure proper cutting and accuracy. |
