Модульные инструментальные системы линейки KM4X Kennametal 2017 - страница 134

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Glossary 8. Glossary Ball Track First Tangency Angled, cylindrical surface which is found on cutting units, the Point where the locking balls make first contact with the lockrods, and the canisters. These surfaces make contact with lockrod, canister, and cutting tool while clamping. The gap the locking balls. between the tool face and receptacle face is closed (no face contact pressure). Ball Track System The combination of ball tracks found in the canister, lockrod, Fretting and cutting unit along with the locking balls. This provides A form of wear caused by repetitive movement between two the clamping force in the KM™ system. Elastic deformation of contacting surfaces relative to each other. This results in the the ball tracks allow the locking forces to be spread out over formation of micro cracks and rapid oxidation on the surface. a surface roughly assuming the shape of an oval, eliminating In severe cases, the transfer of metal between the internal point contact with the locking balls. and external tapers will be seen. This can occur as a result of overloading the joint, severe or prolonged chatter, or low clamping force. Bump Off The act of pushing a cutting unit out of a clamping unit. This is necessary due to the interference fit between the external Interference Level and internal tapers of the system. The frontend of the lockrod The difference between the gage diameters of a cutting unit’s pushes the cutting unit out of the clamping unit as it travels to external taper and a clamping unit’s internal taper. its most forward position, “tool release”. KM™ Canister The initials stand for Kennametal Modular. The first truly A cylindrical component of the clamping mechanism whose universal tooling system designed for use in all machine shop function is to contain the lockrod and the locking balls. The applications. Suitable for static and rotating tools on lathes, canister is fixed within the clamping mechanism body and rotating tools on machining centers (including high speed), and constrains the locking balls axially within the mechanism. The modular machining center packages. It offers accuracy in all locking balls are contained in ball tracks located in a radial directions, rigidity and flexibility of application. It is based on a direction from the lockrod axis. The canister may also contain 1:10 taper with interference fit and is clamped with a ball track drive keys or positioning keys to correspond with slots in the system. Developed jointly with Krupp WIDIA, it was first publicly KM™ cutting units. displayed at the EMO show in Milan in 1987. It is currently offered in six sizes: KM32, KM40, KM50, KM63, KM80, and KM100. Clamping Force The axial force that pulls, or draws, a cutting unit into the clamping unit. This force is the product of the force applied to KM4X™ the lockrod and the mechanical advantage developed by the The next generation of KM™, using the same ball track system clamping mechanism. design as current KM units. KM4X™ has 4 locking elements for better distribution of clamping force and rigidity. It is currently offered in three sizes: KM4X63, KM4X100, Error Proofing and KM4X125. A feature based on the orientation key to ensure that a KM™ cutting unit can only be clamped in one radial orientation. Locking Balls Hardened precision chrome alloy steel ball used as part of the clamping mechanism to clamp a cutting unit. (continued) C34 kennametal.com L V i KMT KMT_KM4X_Catalog_C034_C035_EN.indd 34 KM4X C l C034 C035 EN S b 2 2016 10 35 AM 9/2/16 10:35 AM