(Q)CNC laser cutting machine follower always hits the board during in following movement 
 
(A)  Too small calibration range or too large Z-axis speed

The smaller the calibration range, the smaller the deceleration distance of following movement. If Z-axis speed is too large and it is not reduced to 0 when the follower flows to place, overshoot will be unavoidable. The greater the Z-axis speed is, the greater the overshoot is. When Z-axis speed is greater than 100mm/s, it is recommended to set the calibration range to be 15mm. When Z-axis speed is greater than 250mm/s, it is recommended to set the calibration range to be 20 to 25mm.