Embedded Files
Introduction
Introduction
In this section, you will learn and understand how to change tools and all of the functionality of the parts that the mill includes. Changing tools on a Tormach PCNC 770 involves several steps, ensuring safety and precision.
Mill Parts
Mill Parts
To change a tool on a Tormach PCNC 770, you'll need to understand the several key parts and tools of the mill, each serving a specific function.
1. Latch: Located on the right-side of the mill that is used to open and close the spindle cover
2. Drawbar: Secures the tool in place within the spindle. It’s tightened around the collet, which holds the tool.
3. Drawbar Holder: A component that holds the drawbar in place and is used to release tool when loosened, and insert tool when tightened. It can be a part of a manual or automatic system.
4. R8 Collet: A component that grips the tool shank. It fits inside the the mill to hold the tool securely. Collets come in various sizes to fit different tool shanks.
Tools
Tools
5. Wrenches or Spanners: Used to loosen and tighten the drawbar.
6. Tools Holders: A tool holder in a mill securely holds the cutting tool and connects it to the spindle. It transfers rotational force from the spindle to the tool while maintaining precision and alignment. Common types include collet chucks, end mill holders, and shrink fit holders, each suited to different machining needs.
7. Tool Measurement Device (optional but recommended): Measures the tool's length and diameter to ensure accurate tool offsets and positioning.
Preparing to Change the Tool
Preparing to Change the Tool
Before changing the tool make sure to follow these steps first:
Stop the Spindle or Power Down:
If the machine is currently running, stop the spindle by clicking the "Stop" button on the control panel or using the appropriate command in your CNC software.
Ensure the Machine is at Home Position:
Move the machine to a safe position where the tool can be accessed easily. It’s often best to move it to a location where you have ample space around the spindle.
Release the Tool:
On the PCNC 770, the tool is typically held in place by a tool holder and collet system. Depending on the setup, you might need to use a tool release mechanism or manually loosen the collet.
Changing the Tool
Changing the Tool
After your pre-checks, you may now begin the process of changing the tool:
Loosen the Drawbar with a wrench:
If your machine uses a manual collet system, use a wrench to loosen the collet nut and remove the tool holder.
If your machine uses an automatic tool changer (ATC), you’ll need to follow the ATC-specific procedure to release the tool.
Remove the Existing Tool:
Once the tool holder is loosened, carefully remove the existing tool from the spindle. Make sure to handle the tool carefully to avoid damage. This operation may require striking the draw bar with a deadblow or hammer while holding the tool. Make sure you have a glove on the had holding the tool and that you are actively pushing up while striking down on the drawbar.
Insert the New Tool:
Place the new tool into the tool holder or directly into the spindle if using a manual system.
Ensure the tool is properly seated in the spindle or tool holder.
Secure the Tool:
Tighten the collet nut or tool holder using the appropriate wrench or tool. Make sure it’s securely tightened to prevent any movement during operation.
Check Tool Offset:
If you’re using a tool with a different length or diameter than the previous one, you might need to update the tool offset in your CNC software.
Post Tool Change Procedure
Post Tool Change Procedure
After your pre-checks, you may now begin the process of changing the tool:
Test theTool:
Run a test operation or use a tool measurement cycle to ensure the new tool is correctly installed and functioning as expected.
IMPORTANT: If it is the first time using the tool, verify the hight offset is correct by moving the tool to 1 inch above the part and verifying the gap with a 1-2-3 block
Resume Operation:
Once everything is confirmed to be in place and functioning properly, you can resume your machining operation.
Safety Tips
Safety Tips
Last but not least:
Always wear safety glasses and protective gear.
Make sure the machine is completely powered down or stopped before performing any tool changes.
Double-check that the tool is properly secured before starting any machining operations.
By following these steps, you should be able to safely and effectively change tools on your Tormach PCNC 770.
Tutorial:
Tool Change.mp4Pro Tip:
Mill Pro Tip Spindle Lock.mp4Page updated
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