|8||SST KNURLING TOOL HOLDERS|
INTERNAL KNURLING HOLDERS
This type of tool is often used to repair parts with holes that are slightly oversize. Sometimes knurling new parts before press fitting makes assembly easier, and allows more machining tolerance. In addition, the finished assembly should be capable of transmitting more torque. A straight knurl with bevels is normally used. Carbide pin, hex wrench and medium pitch knurl are included. Setup Procedure: Mount the holder parallel to the machine spindle. Carefully guide the knurl inside the hole and just contact the work. Adjust a small amount off center, toward the work and make a test roll. If the knurl pattern is too shallow, adjust again.
FACE KNURLING HOLDERS
Face knurling holders are suitable for knurling narrow bands. They may be shifted off center to vary the diameter of knurl band that is produced. At smaller diameters, or where appearance is critical, face holders may not be suitable because the knurl pitch must change as the diameter changes (knurling a wide face in narrow, separate bands will allow the tracking to correct itself). Conical holders (next page) should be used for more difficult applications. Carbide pin and hex wrench are included. Knurl is not included.
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