The difference between the center and the rest
1, the processing of slender ladder axis of the outer circle, the center will be generally supported in the middle part of the shaft, the first car to the right side of the outer circle, turn around after the same clip and then the other side of the car.2, the processing of long axis or long cylinder (such as oil cylinder) of the end, and the end of the hole and thread, etc., can be used to clamp the workpiece left end, with the support of the right end of the center or the right side of the center.3, with the knife with the knife body moves in the same direction is usually positive (refers to the normal turning chuck for car steering), slender shaft the most appropriate; while the center frame fixed position, position adjustment is not usually done in one procedure, just be used to strengthen the rigid support car parts
With the tool holder fixed on the side of the big carriage, with the longitudinal movement of the tool holder. There are two supporting claws with the tool holder, followed by the auxiliary supporting role behind the turning tool. Therefore, the tool post is mainly used for machining slender shaft. The use of the tool holder needs to first turn a circle on the right side of the workpiece, adjust the position and the tightness of the two supporting claws according to the outer circle, and then turn the full length of the optical axis.Use with the center frame and cutter, workpiece speed should not be too high, and the need to support with oil lubrication.
There are two situations in the application of the central frame:(1) the outer circle of the long and thin step shaft is generally supported in the middle part of the shaft, and the outer circle of the right end of the vehicle is first arranged.(2) the end face of the long axis or the long cylinder, and the hole and thread of the end, can be used to hold the left end of the workpiece, and the right end is supported by the central frame.
The 1 center frame is fixed on the bed rail, and has three independently movable supporting claws, and can be fixed by fastening screws. When in use, the workpiece is arranged on the front and rear top, in the first part of a workpiece support finishing smooth surface, then the proper position of center frame fastened to the guide rail, the final adjustment of three supporting claws, make contact with the workpiece supporting surface, and adjust to the proper degree of tightness.
