Umbrella Tool Changer with spindle INDEX logic

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:

  1. After all the axis of the machine have been homed as per the homing sequence the tool changer logic will home the tool changer.
  2. The tools will be retracted and the system will wait for as per the timeout period setup in the Umbrella Toll Changer Settings.
  3. 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”.
  4. 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:

  1. Spindle is turned OFF and system waits for the spindle to stop as per the spindle “Spin down delay” value in the spindle settings.
  2. System checks if the current tool in the spindle is setup in a slot is the F4-Tools screen, else gives an error.
  3. System checks if the tool to load is setup in a slot is the F4-Tools screen, else gives an error.
  4. Z Axis moves UP to the Tool Pick & Place Z position.
  5. If spindle indexing is required and “Tool Changer – Input 5 (Spindle in INDEX position)” is assigned to one of the MASSO inputs then:
    1. Tool Changer – Output 3 goes HIGH for VFD to Start JOGGING spindle at very low RPM.
    2. Tool Changer – Output 4 goes HIGH for VFD to Automatically stop and lock in INDEX position.
    3. System waits for the “Tool Changer – Input 5 (Spindle in INDEX position)” to go HIGH.
  6. “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.
  7. “Chuck Clamp M10/M11″ goes HIGH to unclamp the tool.
  8. If spindle “Drawbar Locked & Unlocked” signals are assigned to any of the MASSO inputs then:
    1. System waits for the “Tool Changer – Input 6 (Drawbar Locked)” to go LOW.
    2. And waits for the “Tool Changer – Input 7 (Drawbar unlocked)” to go HIGH.
  9. Z Axis moves up to the Tool holder Z clearance position.
  10. “Tool Changer – Output 1” goes HIGH to Rotate Tools and counts pulses from“Tool Changer – Input 2”.
  11.  Once the desired tool is in position the “Tool Changer – Output 1” goes LOW to stop tool rotation.
  12. Z Axis moves DOWN to the Tool Pick & Place Z position.
  13. “Chuck Clamp M10/M11″ goes LOW to clamp the tool.
  14. If spindle “Drawbar Locked & Unlocked” signals are assigned to any of the MASSO inputs then:
    1. System waits for the “Tool Changer – Input 6 (Drawbar Locked)” to go HIGH.
    2. And waits for the “Tool Changer – Input 7 (Drawbar unlocked)” to go LOW.
  15. “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.

 

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