A
|
|
| 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). |
B
|
|
| back and forth | Machining in which motion is done alternately in one direction then the other. Compare with one way. |
| Between Contours mode | Machining mode of a Contour Driven operation
in which the tool follows a Zig zag or One way trajectory between two user defined curves. |
| bottom plane | A planar geometric element that represents the
bottom surface of an area to machine. It is normal to the tool axis. |
C
|
|
| clearance macro | Motion that involves retracting to a safety
plane, a linear trajectory in that plane and then plunging from that plane. |
| climb milling | Milling in which the advancing tool rotates
down into the material. Chips of cut material tend to be thrown behind the tool, which results in good surface finish. Compare with conventional milling. |
| conventional milling | Milling in which the advancing tool rotates up
into the material. Chips of cut material tend to be carried around with the tool, which often impairs good surface finish. Compare with climb milling. |
D
|
|
| DPM | Digital Process for Manufacturing. |
E
|
|
| extension type | Defines the end type of a hole as being through hole or blind. |
F
|
|
| Fault | Types of faults in material removal simulation are gouge, undercut, and tool clash. |
| 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
|
|
| gouge | Area where the tool has removed too much material from the workpiece. |
| guiding plane | In sweeping operations, this plane is deduced
from the view and starting directions. Machining is done in planes parallel to the guiding plane. The tool contact point is guided by this plane during machining. |
H
|
|
| hard | A geometric element (such as a boundary or a bottom face) that the tool cannot pass beyond. |
L
|
|
| lead angle | User-defined incline of the tool axis in a
plane defined by the direction of motion and the normal to the part surface. The tool axis incline is with respect to the part surface normal. Compare with tilt angle. |
| linking motion | Motion that involves retracting to a safety
plane, a linear trajectory in that plane and then plunging from that plane. |
M
|
|
| 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 feature | A feature instance representing a volume of
material to be removed, a machining axis, tolerances, and other technological attributes. These features may be hole type or milling type. |
| 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. |
| manufacturing view | The set of machining features defined in the part operation. |
| Multi-axis Contour Driven | A milling operation in which the tool is
driven along a contour while respecting user-defined geometric limitations and machining strategy parameters. Three machining modes are Parallel Contours, Between Contours and Spine Contour. A number of tool axis guidance modes are available. |
| Multi-axis Curve Machining | A milling operation in which the tool's side,
tip or contact point is driven along a curve while respecting user-defined geometric limitations and machining strategy parameters. A number of tool axis guidance modes are available. |
| Multi-axis Sweeping | A milling operation in which the tool path is
executed in parallel planes while respecting user-defined geometric limitations and machining strategy parameters. A number of tool axis guidance modes are available. |
| multi-level operation | Milling operation (such as Pocketing or Profile Contouring) that is done in a series of axial cuts. |
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). Compare with thickness. |
| one way | Machining in which motion is always done in the same direction. Compare with zig zag or back and forth. |
P
|
|
| Parallel Contours mode | Machining mode of a Contour Driven operation
in which the tool follows a Zig zag or One way trajectory that is offset from a user-defined guide curve. |
| 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 |
| return macro | Motion for linking between paths or between
levels. It involves retracting to a safety plane, a linear trajectory in that plane and then plunging from that plane. |
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. |
| soft | A geometric element (such as a boundary or a bottom face) that the tool can pass beyond. |
| spindle speed | The angular speed of the machine spindle. Measured in linear or angular units (m/min or rev/min, for example). |
| Spine Contour mode | Machining mode of a Contour Driven operation
in which the tool follows a Zig zag or One way trajectory that is perpendicular to a user-defined spine curve. |
| start direction | Specifies the direction in which machining will start. |
| stock | Workpiece prior to machining by the operations of a part operation. |
T
|
|
| thickness | Specifies a thickness of material to be removed by machining. Compare with offset. |
| tilt angle | User-defined incline of the tool axis in a
plane normal to the direction of motion. The tool axis incline is with respect to the part surface normal. Compare with lead angle. |
| top plane | A planar geometric element that represents the
top surface of an area to machine. It is always normal to the associated tool's rotational axis. |
| 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 path that the center of the tool tip follows during a machining operation. |
| total depth | The total depth including breakthrough distance that is machined in a hole making operation. |
U
|
|
| undercut | Area where the tool has left material behind on the workpiece. |
V
|
|
| View direction | Specifies the direction from which the part is viewed for relimiting and machining. |
Z
|
|
| zig zag | Machining in which motion is done alternately
in one direction then the other. Compare with one way. |
