Patent ID: 11897048
Assignee: HITACHI POWER SOLUTIONS CO., LTD.
Field: Machine tools (Mechanical engineering)
Classification: CPC B | IPC B

Claim 2:
3. The friction stir welding apparatus according to claim 2, wherein
in the first correction mode, the apparatus body calculates the variable correction quantity by multiplying a coefficient calculated by dividing a difference calculated by subtracting the first threshold value from a current state quantity which is a state quantity in a current time by a difference calculated by subtracting the first threshold value from the third threshold value by a maximum movement quantity of the welding tool as a maximum correction quantity for correcting the welding tool position for each setting based on welding conditions corresponding to the welding target members, or calculates the variable correction quantity by multiplying a coefficient calculated by dividing a difference calculated by subtracting the second threshold value from the current state quantity by a difference calculated by subtracting the second threshold value from the fourth threshold value by the maximum movement quantity.