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 most common setups are marked with green in the figure below. The same nomenclature applies to all cutting tools. 4 2 internal thread cutting tool. Here s how the two types of hooks work.

The leading edge of the tool bit that does the. It s a little different for an insert than a thread mill where you have to add a spiral flute. 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. Turning boring drilling discrete oblique cutting elements.

Cutting tools used on a lathe are generally single pointed cutting tools and although the shape of the tool is changed for various applications. Carbide grade joins geometry in making an effective threading tool. Cylindrical milling tools and or radial i e. For the thread mill the cutting effectiveness comes from the grind edge prep and composition.

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. 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. The bottom surface of the tool shank. Geometry is important and so is the quality of the carbide said halas.

The complete tool is segmented into small axial i e. An arbitrary tool geometry for any cutting operation is defined by 15 parameters as follows. 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. Location in cartesian coordinates x 0 y 0 and z 0.