A
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|
| approach macro | Motion defined for approaching the operation start point |
| auxiliary command | A control function such as tool change or machine table rotation. These commands may be interpreted by a specific post-processor. |
| axial machining operation | Operation in which machining is done along a single axis and is mainly intended for hole making (drilling, counter boring, and so on). |
D
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| DPM | Digital Process for Manufacturing. |
E
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|
| extension type | Defines the end type of a hole as being through hole or blind. |
F
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|
| feedrate | Rate at which a cutter advances into a work
piece. Measured in linear or angular units (mm/min or mm/rev, for example). |
| fixture | Elements used to secure or support the workpiece on a machine. |
G
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|
| gouge | Area where the tool has removed too much material from the workpiece. |
M
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|
| machine rotation | An auxiliary command in the program that corresponds to a rotation of the machine table. |
| machining axis system |
Reference axis system in which coordinates of points of the tool path are given. |
| machining operation |
Contains all the necessary information for machining a part of the workpiece using a single tool. |
| machining tolerance |
The maximum allowed difference between the theoretical and computed tool path. |
| manufacturing process |
Defines the sequence of part operations necessary for the complete manufacture of a part. |
| manufacturing program |
Describes the processing order of the NC entities that are taken into account for tool path computation: machining operations, auxiliary commands and PP instructions. |
O
|
|
| offset | Specifies a virtual displacement of a
reference geometric element in an operation (such as the offset on the
bottom plane of a pocket, for example). An offset value can be greater than, less than, or equal to zero. It is measured normal to the referenced geometry or in a specific direction such as axial or radial. For example, a 5mm Offset on Contour means that a virtual displacement is applied normal to the contour geometry. A 5mm Axial Part Offset means that a virtual displacement is applied to the part geometry along the tool axis direction. Compare with thickness. |
| one way | Machining in which motion is always done in the same direction. Compare with zig zag. |
P
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|
| part operation |
Links all the operations necessary for machining a part based on a unique part registration on a machine. The part operation links these operations with the associated fixture and set-up entities. |
| PP instruction | Instructions that control certain functions that are auxiliary to the tool-part relationship. They may be interpreted by a specific post processor. |
| PPR | Process Product Resources. |
R
|
|
| retract macro | Motion defined for retracting from the operation end point |
S |
|
| safety plane | A plane normal to the tool axis in which the tool tip can move or remain a clearance distance away from the workpiece, fixture or machine. |
| set up | Describes how the part, stock and fixture are positioned on the machine. |
| spindle speed | The angular speed of the machine spindle. Measured in linear or angular units (m/min or rev/min, for example). |
| stock | Workpiece prior to machining by the operations of a part operation. |
T
|
|
| thickness | Specifies a thickness of material to be
removed by machining. A thickness value must be greater than zero
and is measured normal to the machined geometry. For example, if a
5mm Finish Thickness is specified on an operation then 5mm of material will
be removed during the finish pass. Compare with offset. |
| tool axis | Center line of the cutter. |
| tool change | An auxiliary command in the program that corresponds to a change of tool. |
| tool clash | Area where the tool collided with the workpiece during a rapid move. |
| tool path | The trajectory that the tool follows during a machining operation. |
| total depth | The total depth including breakthrough distance that is machined in a hole making operation. |
U
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|
| undercut | Area where the tool has left material behind on the workpiece. |
Z
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| zig zag | Machining in which motion is done alternately in one direction then the other. Compare with one way. |
