Общий каталог Ingersoll 2011 - страница 343

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GENERAL OPERATING GUIDELINES THESE OPERATING GUIDELINES ARE RECOMMENDED STARTING POINTS FOR SAFE, EFFECTIVE PERFORMANCE IN A VARIETY OF MATERIALS The parameters outlined on the following Extended length end mills require special pages represent recommended general operating parameters. They are NOT intended operating guidelines. They are intended to act for channel cutting. Feed rates must generally as starting points as you look for the optimum be reduced due to their length-to-diameter operating parameters for a specific application. ratios. Always use the shortest extension possible for best performance. Refer to Optimum parameters for any application “Rigidity Analysis” on page 310. are bound to vary according to the unique combination of variables which may be present When ball nose end milling, two critical in that particular application. Such variables parameters are directly affected by the Depth might include the machine tool condition, of Cut (DOC): cutting speed in Surface Feet per rigidity of the workpiece and fixturing, the work Minute (SFM) and chip thickness. It is necessary material condition, the precise hardness and to recognize these factors and to follow the machinability of the material, and the shape guidelines relating to them. Refer to “Ball Nose and finish requirements of the workpiece, to Chip Thinning” on page 312. name a few. For additional information regarding specific Once the application is operating reasonably grades,refertothegradechartonpage322.If you well and safely, adjustments to these have questions regarding a specific application, guidelines can be made based on variables contact your Ingersoll Cutting Tool Company present and the performance of the tool. sales engineer for assistance. Subject to technical changes. 345