Thread Cutting Tool Geometry

The thread turning tool can also be used in a normal or upside down position the latter helps to remove chips.

Thread cutting tool geometry.

The leading edge of the tool bit that does the. The tool is a forged type orbit type and held on a boring bar. Cutting tools used on a lathe are generally single pointed cutting tools and although the shape of the tool is changed for various applications. It s a little different for an insert than a thread mill where you have to add a spiral flute.

The same nomenclature applies to all cutting tools. The point of the tool must be set square with the work. The cutting face is the portion of the tap flute between the major and minor diameter of the thread that cuts or shears the workpiece material. Cylindrical milling tools and or radial i e.

The cutting edge of the tool is exactly similar to an external thread cutting tool but the front clearance angle is sufficiently increased as in a boring tool. The complete tool is segmented into small axial i e. Geometry is important and so is the quality of the carbide said halas. An arbitrary tool geometry for any cutting operation is defined by 15 parameters as follows.

The most common setups are marked with green in the figure below. Working away from the chuck pull threading using right hand tools for left hand threads and vice versa enables cost savings through tool inventory reduction. Carbide grade joins geometry in making an effective threading tool. Turning boring drilling discrete oblique cutting elements.

The bottom surface of the tool shank. For the thread mill the cutting effectiveness comes from the grind edge prep and composition. Here s how the two types of hooks work. The entry angle of the cutting face into the workpiece material is measured in positive to negative degrees from a perpendicular reference line through the axis of the tool.