Umbrella Tool Changer with spindle INDEX logic
Tool Changer Inputs and Outputs names:
Inputs on MASSO
- Tool Changer – Input 1 for Homing Sensor (to be used to find tool-0 position when the machine is homed)
- Tool Changer – Input 2 for Pulse Counter Sensor (this pulse signal is required as each tool passes the sensor)
- Tool Changer – Input 3 for Tools Retract OK (signal from sensor or switch telling the system that the tools are retracted away from the spindle)
- Tool Changer – Input 4 for Tools In Position OK (signal from sensor or switch telling the system that the tools fully extended and at loading position)
- Tool Changer – Input 5 for Spindle in INDEX position (signal from VFD, telling the system that the spindle is Indexed and locked in position)
- Tool Changer – Input 6 for Drawbar Locked (signal from sensor or switch telling the system that drawbar is in locked position)
- Tool Changer – Input 7 for Drawbar Unlocked (signal from sensor or switch telling the system that drawbar is in unlocked position)
Outputs on MASSO
- Chuck Clamp M10/M11 for spindle drawbar clamp and un-clamp (Low to clamp and High to un-clamp)
- Tool Changer – Output 1 to move Rotate Tools
- Tool Changer – Output 2 when LOW will Retract Tools (away from spindle) and when HIGH will Bring Tools In Position (for tool change)
- Tool Changer – Output 3 when HIGH will give signal to VFD to Start JOGGING spindle at very low RPM.
- Tool Changer – Output 4 when HIGH will give signal to VFD to Automatically stop and lock in INDEX position.
Tool Changer logic:
During machine homing:
- After all the axis of the machine have been homed as per the homing sequence the tool changer logic will home the tool changer.
- The tools will be retracted and the system will wait for as per the timeout period setup in the Umbrella Toll Changer Settings.
- Once retraced the tools will rotate until the homing sensor on the tools is not activated. IMPORTANT: The home position of the tool changer must be marked as Slot “1”.
- Then the system will automatically rotate the tool to the last loaded position (empty tool slot).
When a tool change command is received, the tool changer logic works in the followings steps:
- Spindle is turned OFF and system waits for the spindle to stop as per the spindle “Spin down delay” value in the spindle settings.
- System checks if the current tool in the spindle is setup in a slot is the F4-Tools screen, else gives an error.
- System checks if the tool to load is setup in a slot is the F4-Tools screen, else gives an error.
- Z Axis moves UP to the Tool Pick & Place Z position.
- If spindle indexing is required and “Tool Changer – Input 5 (Spindle in INDEX position)” is assigned to one of the MASSO inputs then:
- Tool Changer – Output 3 goes HIGH for VFD to Start JOGGING spindle at very low RPM.
- Tool Changer – Output 4 goes HIGH for VFD to Automatically stop and lock in INDEX position.
- System waits for the “Tool Changer – Input 5 (Spindle in INDEX position)” to go HIGH.
- “Tool Changer – Output 2” goes HIGH to move Tools In Position to unload the current tool. The system waits for time setup in Timeout settings for the “Tool Changer – Input 4” (Tools In Position) signal to go HIGH, else gives an error.
- “Chuck Clamp M10/M11″ goes HIGH to unclamp the tool.
- If spindle “Drawbar Locked & Unlocked” signals are assigned to any of the MASSO inputs then:
- System waits for the “Tool Changer – Input 6 (Drawbar Locked)” to go LOW.
- And waits for the “Tool Changer – Input 7 (Drawbar unlocked)” to go HIGH.
- Z Axis moves up to the Tool holder Z clearance position.
- “Tool Changer – Output 1” goes HIGH to Rotate Tools and counts pulses from“Tool Changer – Input 2”.
- Once the desired tool is in position the “Tool Changer – Output 1” goes LOW to stop tool rotation.
- Z Axis moves DOWN to the Tool Pick & Place Z position.
- “Chuck Clamp M10/M11″ goes LOW to clamp the tool.
- If spindle “Drawbar Locked & Unlocked” signals are assigned to any of the MASSO inputs then:
- System waits for the “Tool Changer – Input 6 (Drawbar Locked)” to go HIGH.
- And waits for the “Tool Changer – Input 7 (Drawbar unlocked)” to go LOW.
- “Tool Changer – Output 2” goes LOW to move Retract the tools away from the spindle. The system waits for time setup in Timeout settings for the “Tool Changer – Input 3” (Tools In Position) signal to go HIGH, else gives an error.