What is the usage method of flat mouth pliers in precision parts machining?

Pneumatic or hydraulic vises are usually used in large-scale production of precision parts processing. When using pneumatic or hydraulic vises, one should be familiar with their structure and adjustment methods. For example, in mass production, hydraulic vises can be used to effectively reduce labor intensity, stabilize clamping force, and absorb certain vibrations during milling when milling workpieces with high impact force and weight. ​ According to the drawings and instructions, the structural principle of the hydraulic vise is analyzed as follows: during the clamping operation, the handle is pulled to the clamping position, and the pressure oil enters the oil chamber above the piston 2 through the control valve 1, pushing the piston 2 to move downwards and driving the piston rod 3 connected to it to move. The piston rod pushes the slider 4 with inclined groove to move, and under the action of the inclined groove and roller 6, the movable jaw seat 5 is pulled to the left to clamp the workpiece. After the milling stage of precision parts processing is completed, pull the handle to the release position, retract the piston, and release the jaws. When processing another batch of workpieces and adjusting the distance between the two jaws due to changes in workpiece size, the nut on the upper end of the T-shaped column shaft in the middle of roller seat 7 should be loosened to disengage the teeth on the roller end face from the teeth on the movable jaw seat, and then adjust the position of the movable jaw.