Below is an outline of the machining strategies included in HSM Performance Pack. All operations feature tool holder collision checking, and work with tapered tools.
Constant Cut is a roughing strategy which allows for much faster machining times than traditional roughing without tool breakage. Constant Cut can be used for all your 3D roughing requirements and can machine both open and closed pockets as well as cores by machining from outside or from inside.
Pocket is the main roughing strategy for clearing large quantities of material effectively. The part is cleared layer by layer with smooth offset contours maintaining climb milling throughout the operation. To avoid plunging, the tool ramps down along a helical path between levels. To maintain a high feed rate, and thereby reducing the machining time, sharp changes of direction are avoided by smoothing the tool motion.
The Contour strategy is designed to give you an optimal finish for steep regions in your geometry. It is typically applied to areas where the slope exceeds an angle of 30 degrees. The Contour algorithm virtually slices the geometry into horizontal layers. At every layer the toolpath then machines along the edge of the two-dimensional geometry thus created. You can control the vertical distance between the toolpath layers with the stepdown parameter.
The horizontal clearing strategy automatically detects all the flat areas of the part and clears them with an offsetting path. When the flat area is shelved above the surrounding areas, the cutter moves beyond the outline to clean the edges.
Parallel is a versatile finishing strategy which is usually applied for shallow or relatively flat regions in your geometry. As the name implies, the Parallel strategy rasters along the surface in parallel lines, either back and forth (zig-zag) or in one direction only. This means that when looking at the part from straight above, the toolpath will look like a set of parallel lines in a plane but the tool of course always follows the height of the geometry.
Scallop finishing creates passes that are at a constant distance from one another by offsetting inwards along the surface. The passes will follow sloping and vertical walls to maintain the stepover. Although scallop finishing can be used to finish an entire part, it is most commonly used for rest finishing, following a combination of contour and parallel passes. The rest area is defined by specifying the dimensions of the previous tool.
Like the other finishing strategies, machining can be limited by a contact angle range.
The pencil strategy creates tool paths along internal corners and fillets with small radii removing material that no other strategy can reach. It is even possible to make pencil paths along fillets that are larger than the tool corner radius by setting the overthickness parameter.
Pencil paths can form the basis of many other machining operations. You can either make a limited number of offsets from a pencil path to clear a fillet or make an unlimited number of offset paths in order to finish the entire surface from the corners outwards.