International scale of test rod taper

Screw the ring gauge from the full tooth portion to the front end correction tooth portion. Lubricate the proof plug with a film with clear oil. Loosen the lock screw counterclockwise to adjust the screw clockwise. This allows the ring gauge to open and the median diameter is larger than the proof gauge. It should now be seen that there is a visible pull between the ring gauges. At this time, it will be found that even with such a short screw-in, there will be some resistance or pulling force. Made of high-quality carbon tool steel, processed through multiple heat treatments, precision grinding of the working surface. The test bar taper is an international scale of taper for static fit for precise positioning. Within a certain range of uniform taper, the workpiece can be freely disassembled and assembled, and at the same time, it will not affect the use effect when working. It is like a taper shank drilled in the hole. If it needs to be disassembled for grinding, it will be reinstalled after disassembly. Will affect the central position of the drill bit. This will lock the adjustment screw and secure the ring gauge size. To check for taper or flare, place the ring gauge on the workbench and shake it with the proof gauge to see the tightness. Because the taper is small, the principle of friction can be used to transmit a certain torque, and because it is a taper fit, it can be easily disassembled.