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Horizontal passes are used to finish machine flat surfaces more efficiently by using flat bottom cutters. Horizontal machining has similar smoothing characteristics to area clearance and can detect all flat surfaces on a part, with or without using boundaries. image

Should the user require to machine these flat areas with more than one pass, the passes can be axially (along the tool axis) offset by a user any number of times.

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Raster toolpaths are used for finishing in conjunction with steep and shallow cutter contact angles and another machining routine, typically waterline. The raster toolpath would have a cutter contact angle of around 0.1 30 degrees and waterline 30 90. This approach uses the best machining combination for finishing complex 3D surfaces and can be used on older CNC milling machines or high speed machines alike.

Perpendicular raster toolpathsare used for finish machining the whole component with a constant surface finish and at the same time maintain a climb milling direction. Perpendicular as it suggests, machines using raster passes in one direction. It omits passes on the steep faces that are parallel with the cutting direction and then fills in the gaps with another raster toolpathat 90 degrees to the previous, thus maintaining surface finish and climb machining. Linking options include one-way and bi-directional, plus options for down-milling (for 3D machining with carbide-insert cutters) and up-milling (for 3D finishing with solid carbide ball cutters).

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This creates an archimedean spiral toolpathfrom a given focal point, generating a constant contact as it machines within a given boundary.It is ideally suited for use on round shallow parts using contact angles between 0.1 –30, in conjunction with the waterline machining for the more vertical faces 30 –90.

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Similar to spiral machining, radial machining also starts from a focal point, providing the user with the ability to machine radial parts. Some unique options include the ability to stop short of the centre of the radial passes, where they become very dense.The focal point for the radial or spiral machining is detected automatically, or can be determined by the user. This routine can also be used in conjunction with cutter contact angles.

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Specialised Technical Services Pty Ltd
Specialised Technical Services P/L
CAD CAM Solutions, Training and Support for Mechanical Engineering, Design and Manufacturing Industry
 
45 Fairway Drive, DROUIN VIC 3818, Australia
Tel: +613 5625 5200

Mob: 0416 188 479
Email: cadcam@sts.com.au