Tungaloy has added 1.2 mm-wide (.047″-wide) DGS-style grooving inserts to its TungCut multifunctional grooving system.
For job shops that are mass-producing small parts with Swiss lathes, minimizing material waste in the part-off process can be an extremely effective solution for cost savings. New 1.2 mm-wide (.047″-wide) grooving inserts can reduce the material waste produced by parting-off by up to 40% when compared with using 2.0 mm-wide (.079″-wide) insert. This translates to, after 2,500 cuts, the saving of a 2,000 mm-long (78.74″ long) bar stock.
The new grooving inserts feature DGS-style chipbreaker that generates smooth cutting and excellent chip evacuation. In combination with versatile AH725 grade, the insert ensures stable parting-off performances in a range of material groups.
The toolholders, which are envisaged for the use on Swiss machines, are available in 10x10, 12x12, or 16x16 mm shanks. The insert is securely clamped in the seat by operating the screw located on the side of the holder, allowing the insert to be changed while the toolholder is still in the machine. This enables insert change time to be reduced to one third of the time conventional Swiss toolholders would require, significantly shortening machine downtime.
In addition, toolholders designed for the machines with the sub-spindle are also available, aside from standard style toolholders. This ensures stable operation when parting off a short workpiece close to the chuck.
Groove or other tool geometry that breaks chips into small fragments as they come off the workpiece. Designed to prevent chips from becoming so long that they are difficult to control, catch in turning parts and cause safety problems.
Workholding device that affixes to a mill, lathe or drill-press spindle. It holds a tool or workpiece by one end, allowing it to be rotated. May also be fitted to the machine table to hold a workpiece. Two or more adjustable jaws actually hold the tool or part. May be actuated manually, pneumatically, hydraulically or electrically. See collet.
Machining grooves and shallow channels. Example: grooving ball-bearing raceways. Typically performed by tools that are capable of light cuts at high feed rates. Imparts high-quality finish.
When used in lathe or screw-machine operations, this process separates a completed part from chuck-held or collet-fed stock by means of a very narrow, flat-end cutting, or parting, tool.
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