Widia General Machining Guidelines Radial modified flank Modified flank modified flank Alternating flank alternating flank Reversed modified flank

Widia General Machining Guidelines Radial modified flank Modified flank modified flank Alternating flank alternating flank Reversed modified flank modified flank angle of infeed angle of infeed Advantage Cutting on both sides of the thread form places all of the cutting edge in the cut and protects edge from chipping. Even wear on the insert. Advantage Tool cuts both sides of thread form, so it is protected from chipping similar to 0° infeed. Channel-type chip develops, but uneven chip thickness helps remove the chip similar to flank infeed. This is the preferred method, especially when used with a chip control insert. Combined radial and/or alternating flank infeed. Results in good tool life, with wear evenly distributed over both flanks. Advantage I ncreased tool life because both edges are used equally. NOTE Some machine tools may require special programming techniques to achieve this method of infeed. Advantage Tool cuts both sides of thread form, so it is protected from chipping similar to 0° infeed. Channel-type chip develops, but uneven chip thickness helps remove the chip similar to flank infeed. This is the preferred method, especially when used with a chip control insert. Combined radial and/or alternating flank infeed. Results in good tool life, with wear evenly distributed over both flanks. As chip flow is the reversed feed direction, it is an excellent choice for internal threading. Disadvantage Tool develops a channel chip that may be difficult to handle. Tip chipping occurs when cutting high-tensile materials. Bur condition is increased. Entire cutting edge is engaged at finish of thread, causing increased tendency to chatter. Disadvantage Similar disadvantages as with 0° infeed, although reduced somewhat in magnitude as cutting forces are better equalised and chip flow is much less of a problem. Disadvantage Difficult to cut on conventional machinery. Disadvantage Programming needs to be done line by line. F85 Technical Information