Answer from AI Robotics Australasia. .
What the cell has to do
A complete tend is more than a pick and place. The robot or the cell has to open and close the door, actuate the chuck or fixture, confirm the part is seated, start the cycle, and put the finished part somewhere the next operation understands. Chips, coolant, and a door that does not always latch are part of the design.
Infeed and outfeed decide whether the machine can run unattended. A stillage of raw parts and a stillage of finished parts, both presented so the robot can find them, is the difference between a demo and a night shift.
When it is worth doing
Tending pays when load and unload time is a large share of the cycle, when the machine already sits idle for lack of a person, or when you want a block of unattended running. It pays less when the cutting cycle is very long and a person can cover several machines anyway, unless the goal is specifically unattended hours.
One machine, one part family, and a clean interface is the right first cell. A robot that tends three different machines on day one is three integration projects.
Cobot or industrial arm
Smaller lathes and mills with light parts are a common cobot application, particularly when an operator is on the floor. Heavy parts, long reach, and very short load windows move the design to an industrial arm and guarding.
We assess the machine interface, the part weight, and the hours you can actually run unattended before recommending either.
Related questions
What is CNC machine tending?
A robot loads blanks and unloads finished parts on a lathe, mill, or similar machine, including the door and the chuck or fixture. The aim is more cutting time and the option to run with fewer people at the door.
Can a cobot tend a CNC machine?
Yes, for lighter parts and machines a cobot can reach, after a risk assessment. Heavy parts and tight load windows usually need an industrial robot.
Will machine tending let the CNC run lights-out?
Only if infeed, outfeed, chip control, tool life, and the fault plan are all designed for it. The robot is one of those items. An unattended plan that ignores a full swarf bin will stop at the swarf bin.
What does the CNC need for a robot to tend it?
A reliable door and chuck or fixture interface, a cycle-complete signal, and a part presentation the robot can repeat. Older machines can be tended, but the integration work is in those signals, not in the arm.