Tungaloy Corporation has expanded its RoundSplit series of tooling to include inserts with a serrated cutting edge and wear-resistant PVD grade AH3135 for improved stability and surface finish in steel and stainless steel machining.
Tjhe company said that in general machining, operations involving long overhangs are prone to chatter, making it difficult to maintain stable machining quality. In addition, in workplaces where both steel and stainless steel are machined, different insert grades suitable for each material must be used, which increases the complexity of tool management and setup changes. As a result, there is a growing demand for versatile tools that offer high resistance to chatter.
RoundSplit is a round insert type face milling cutter that ensures stable machining by suppressing vibration. Its unique serrated cutting edge design reduces cutting resistance, enabling high productivity even in long overhang or high-feed machining applications.
The inserts feature serrated (wave-shaped) cutting edges that effectively disperse vibrations during machining. It suppresses chatter even under long overhang conditions, ensuring stable cutting, and prevents surface roughness and tool life reduction caused by vibration, enabling high-quality finishes.
The company added that the inserts with the new PVD Grade AH3135 can achieve high-chipping resistance as the grade offers a balance of wear resistance and toughness. It minimizes edge chipping and breakage during interrupted cutting or under unstable machining conditions, thereby extending tool life and reducing the frequency of tool changes, which improves productivity and cost efficiency.
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Related Glossary Terms
- chatter
chatter
Condition of vibration involving the machine, workpiece and cutting tool. Once this condition arises, it is often self-sustaining until the problem is corrected. Chatter can be identified when lines or grooves appear at regular intervals in the workpiece. These lines or grooves are caused by the teeth of the cutter as they vibrate in and out of the workpiece and their spacing depends on the frequency of vibration.
- gang cutting ( milling)
gang cutting ( milling)
Machining with several cutters mounted on a single arbor, generally for simultaneous cutting.
- milling
milling
Machining operation in which metal or other material is removed by applying power to a rotating cutter. In vertical milling, the cutting tool is mounted vertically on the spindle. In horizontal milling, the cutting tool is mounted horizontally, either directly on the spindle or on an arbor. Horizontal milling is further broken down into conventional milling, where the cutter rotates opposite the direction of feed, or “up” into the workpiece; and climb milling, where the cutter rotates in the direction of feed, or “down” into the workpiece. Milling operations include plane or surface milling, endmilling, facemilling, angle milling, form milling and profiling.
- milling cutter
milling cutter
Loosely, any milling tool. Horizontal cutters take the form of plain milling cutters, plain spiral-tooth cutters, helical cutters, side-milling cutters, staggered-tooth side-milling cutters, facemilling cutters, angular cutters, double-angle cutters, convex and concave form-milling cutters, straddle-sprocket cutters, spur-gear cutters, corner-rounding cutters and slitting saws. Vertical cutters use shank-mounted cutting tools, including endmills, T-slot cutters, Woodruff keyseat cutters and dovetail cutters; these may also be used on horizontal mills. See milling.
- physical vapor deposition ( PVD)
physical vapor deposition ( PVD)
Tool-coating process performed at low temperature (500° C), compared to chemical vapor deposition (1,000° C). Employs electric field to generate necessary heat for depositing coating on a tool’s surface. See CVD, chemical vapor deposition.
- wear resistance
wear resistance
Ability of the tool to withstand stresses that cause it to wear during cutting; an attribute linked to alloy composition, base material, thermal conditions, type of tooling and operation and other variables.
