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PMTS 2019: Masa Tool’s F37M10 cartridge is said to replace the standard TF37 collet in a users CNC spindle. #PMTS  The F37M10 Microconic cartridge from Masa Tool is a micro-workholding system for use in high precision, small diameter CNC turning applications. Masa Tool’s F37M10 cartridge is said to replace the standard TF37 collet in a users CNC spindle. This enables the use of the company’s Microconic collets to achieve concentricity within 5 microns (0.0002"), according to the company. The cartridge is a micro-workholding system for use in high precision, small diameter CNC turning applications. This cartridge is compatible with spindles that accept DIN 1536E, Meister Swiss 563, Schaublin F37 (76-740), Southwick and Meister TF37, KEB (MasWerks) MC37 and Hardinge TF37 / 4619 collets. The company’s cartridge and collet assembly is designed to vector the chucking force directly over the holding surface. This means the chucking force is reduced while at the same time the holding power is increased. This is said to open up the possibility of moving part operations to the sub-spindle and reducing cycle time. Also, the cycle time is commonly reduced by 20-40 percent.
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Masa Tool is introducing its Microconic workholding system for use in subspindle Swiss-type machine operations, enabling the operator to switch operations from the main to the subspindle so that usage is balanced.  Masa Tool is introducing its Microconic workholding system for use in subspindle Swiss-type machine operations, enabling the operator to switch operations from the main to the subspindle so that usage is balanced. This capability is said to reduce cycle time in ways that are not possible with conventional collets. The Microconic system consists of two primary components: a cartridge that fits in the machine’s standard TF20, TF25 or 5C collet closer, and the collet itself, which fits into the cartridge. Each cartridge model has a solid extended nose and can accept both regular and over-grip collets. The over-grip collets open up to 0.157" (4 mm) larger than the clamping diameter. The Microconic cartridge’s extended nose design directs all of the chucking pressure directly over the workpiece for concentricity and rigidity. Total indicated runout (TIR) for the Microconic system is guaranteed at 0.0002" (5 µm) at the workpiece, absent any runout introduced by the machine structure or other elements of the setup. The system capacity ranges from 0.008" to 0.394" (0.2 to 10 mm) in diameter, with all sizes available from stock.
Masa Tool Inc. has created a precision collet device for the micromachining industry. The “Microconic System” is a miniaturized collet system that consists of two major components: the Microconic “cartridge” that fits directly into Swiss spindles like a collet and the Microconic collet that is a “right size” style collet. This chucking method is available for both draw-type (5C) and push-type or “dead length” systems (TF25), used on the subspindle of Swiss CNC lathes. The Microconic grind provides extreme accuracy, high gripping force and tolerance for workpiece size differential, the company says. Each finger of the collet has a separate conical surface that acts to apply the gripping force with accuracy.
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February 2023
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