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Topsolid CAM online Help Index
Finish operations : Constant scallop
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Menu: Milling | 3D operation | Finish operations
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The others finishing operations
This machining operation is mainly meant for finishing operations on parts and consists in automatically machining a part made up of a set of faces. The method implies applying a series of concentric contouring operations, while varying the space between each pass to maintain constant scallop height, whatever the part shape, and against a contour chosen by the operator.
As for under surfaces, they will not be ignored ; therefore, it will be possible to work in areas only accessible with specific tools.
Constant scallop machining also allows rest material rework, if rest areas or material have been detected beforehand. In this case, the operation is carried out based on the areas’ outer and inner contours.
The user must define a contour which will act as a favored machining direction. TopSolid'Cam refers to this contour to define an orthogonal projection of the latter onto the part to create the first path. The other paths will be more or less parallel to the first one. A constant height for each crest between each path will result from the space found between them. The original contour can define a tool path’s beginning or end.
Examples of special paths, as they are bound by a circular profile. Moreover, it is interesting to note that TopSolid'Cam allows the generation of concentric tool paths as well as of spiral tool paths through the definition of adequate parameters.
Scallop Height and Tolerance:
These 2 parameters are closely linked to each other and resulting surface quality depends on their value. Within TopSolid'Cam, the maximum crest height must not be higher than twice the tolerance value, to satisfy calculation requirements
Sometimes, tool path calculations
do not converge. In this case, calculation is stopped without generating
the whole tool path. The operator can avoid this by requesting a smaller
crest height and, therefore, a smaller curve tolerance.
Select the menu
"Milling | 3D operation | Finish operations" or click on the
icon.
If there are several parts, select the part to be machined.
Select the tool (or change tool) which can be used for the machining operation.
Specify the different parameters in the tab dialogue box which appears.
Enter the comment which appears on the machine block listing meant for the NC operator. This comment will also appear when the user wishes to take a look at or modify an operation, using the Operation/ Operations Manager function.
Eventually, enter a codified remark which will be interpreted by the post-processor, in a specific manner predefined by the user and the post-processor redactor.
Validate entries made into the dialogue box by clicking on OK
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Topsolid CAM online Help Index
