Optimized plane operation (plane-plane)


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The optimized plane operation consists of two plane finishing operations, whose passes lie in mutually perpendicular planes. The default parameters for these operations are filled in such a way that each operation only machines an optimal area of the model, this ensures efficient toolpath results. Owing to this, consistent machining quality on the entire surface of the detail can be achieved. Use of the optimized plane operation allows quality machining of models that have a complex surface shape, and also minimizes the machining time.

All parameters of the two plane operations are interconnected; this means that alteration of a parameter of one operation will be automatically applied to the parameter value of the other operation. An exception to this is the angle between the planes of the work passes and the X axis – for this 'doubled' operation the value of the angle is set in such a way, that the planes of the work passes will remain perpendicular to one another. This requires that both operations be tuned separately. The default sets of parameters for the optimized plane operation(s) are identical to the plane finishing operation.

When creating a pair of plane operations, in order to achieve an optimal result, their parameters are filled in the following way. The angle between the planes of the work passes of the second operation and the X-axis is set to 90 degrees more than it is in the first one. The frontal angle is set to 45 degrees for both operations, so that any sloping area can be machined by one operation only. The minimum slope angle of the normal to the Z axis, for the first operation is set equal to 0 degrees, and for the second – equal to 1 degree (i.e. horizontal areas will be machined by the first operation only). The maximum slope angle of the normal is set 90 degrees for both operations; this allows machining of all surfaces of a model.

The model being machined by the optimized plane operation is defined by a set of solid bodies, surfaces and meshed objects. For every geometrical object or a group of objects, an additional stock can be defined, which during machining will be added to the main stock for the operation.

If a workpiece and a restricting model are not defined, then the system performs machining of the entire available surface of the model being machined. Otherwise only those surface areas will be machined, which lie within the workpiece and outside the restricting model.

The workpiece can be assigned as a cube, cylinder, a mould with stock or prismatic form, as residual material after machining by previous operations, and also as a free-form geometrical model, consisting of solid bodies, surfaces, meshes and prisms whose bases are projections of closed curves. In the restricting model, solid bodies, surfaces and meshes which are required to be controlled during machining, and also machining areas and restricted areas, defined by projections of closed curves can be defined.

The work passes of the operation lie in two parallel vertical planes. The planes of different operations are perpendicular to each another. The positions of the planes are defined by the angle between these planes and the Z-axis. The step between the planes of neighboring work passes can be either fixed or calculated according to the defined height of the scallop.

Local coordinate system or a rotary head, the position of the model being machined will not change, the tool rotation axis is parallel to the Z axis of the local coordinate system, and all work passes are located in planes that are perpendicular to the horizontal plane of the local coordinate system.

It is also possible to restrict machining from entering areas of the restricting model and areas of edge rounding in the resulting toolpath.

Joining of the work passes into a single toolpath can be performed going downwards or upwards. Transition between neighboring work passes can be performed on the surface, using retract and approach moves or via the safe plane.

Note:        In order to provide a good finish at the border area(s), it is recommended to "overlap" the toolpaths for the operations. For example, set the value for the frontal angle in the first and second operations to 46 degrees.

 

 

 

See also:

Types of machining operations

Operations for the 3-axes milling