Main body of a tool; the portion of a drill or similar end-held tool that fits into a collet, chuck or similar mounting device.

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Available in submicron-grain carbide grades for ferrous and nonferrous materials either uncoated or with TiN, TiCN, TiAIN or diamond film coatings. The inserts can be used on conventional, Swiss-type and CNC machines.

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THINBIT, manufactured by Kaiser Tool Co., announced the expansion of its GROOVE ‘N TURN line with ACME THREADING inserts.

Added to titanium-carbide tooling to permit machining of hard metals at high speeds. Also used as a tool coating. See coated tools.

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Process of both external (e.g., thread milling) and internal (e.g., tapping, thread milling) cutting, turning and rolling of threads into particular material. Standardized specifications are available to determine the desired results of the threading process. Numerous thread-series designations are written for specific applications. Threading often is performed on a lathe. Specifications such as thread height are critical in determining the strength of the threads. The material used is taken into consideration in determining the expected results of any particular application for that threaded piece. In external threading, a calculated depth is required as well as a particular angle to the cut. To perform internal threading, the exact diameter to bore the hole is critical before threading. The threads are distinguished from one another by the amount of tolerance and/or allowance that is specified. See turning.

Toolholders are available in square shank size 5/16" through 1-¼" and round shank sizes ½" through 1" with straight and 90-degree presentations. GROOVE ‘N TURN ACME THREADING inserts fit existing "L" series THINBIT toolholders.

The inserts are designed to cut thread sizes 4, 5, 6, 8, 10, 12, 14 and 16 threads per inch. Tools have geometry to cut standard 29° acme thread profiles. Inserts can be used to cut centralizing or stub profiles by overcutting. The inserts can be used for internal acme threads on parts with bore diameters of 1.250" and larger.

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Sleek, accurate, reliable, all in a single package. Glacern CAT40, BT40, BT30, NMTB40, R8, & ISO30 toolholders are balanced to 20k rpm for high speed milling and electroless nickle plated for unparalleled durability.

Microprocessor-based controller dedicated to a machine tool that permits the creation or modification of parts. Programmed numerical control activates the machine’s servos and spindle drives and controls the various machining operations. See DNC, direct numerical control; NC, numerical control.

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