First, if you need to straighten the trapezoidal screw, we should first choose the manual straightening method, place the trapezoidal screw directly on the U-shaped iron block, and then the flat shovel that has been opened and ground into a circle Place it on the raised position of the trapezoidal screw rod, use a sledgehammer to strike it, and use a dial indicator for alignment, which needs to be repeated many times.
Secondly, if you need to bend the trapezoidal screw as a whole, the editor recommends that you still use a press to complete the trapezoidal screw, and also place the trapezoidal screw on the U-shaped iron block, and place the round mold on the trapezoidal wire. Below the rod. We can observe with the naked eye, and also use a dial indicator to correct it, which needs to be repeated many times.
Finally, after normal use, the trapezoidal screw is found to be bent overall, but when the degree of bending is relatively small, we still need to use manual to straighten it, the way is the same as before.