Reference Topics > Other customizing options > Glossary Topic > Glossary
  
Glossary
3D element
3D elements are:
edges
faces
vertices
They form parts, which are 3D objects.
Align
To reposition two parts in a way that the specified faces of the parts are on the same plane.
Angle
An angle is formed by vectors crossing each other at a single point. You can measure the angles between edges, parts, faces, and so on.
Assembly
A 3D object that can combine several parts and sub-assemblies and structure them in a hierarchy.
Axis
An axis is a reference line for translational or rotational motion, respectively. An axis is defined by a point and a direction.
Blend
Replaces sharp edges of a part with smooth, rounded faces, tangent with the adjacent faces.
Boss
Features such as bosses, holes, and pockets can be recognized by the Viewer. Bosses and holes may be embedded in more than one face.
Browser
On-screen lists which display the structure of assemblies and parts or the participating session members.
Catch
Catch is a tool that is used to specify what your cursor catches (or snaps) to. You can use catch to specify positions for operations that use coordinates. The size of the cursor indicates the catch range. You can customize the catch range.
Centroid
The center of mass, inertia, or gravity of a face, part, or assembly.
Chamfer
Replaces sharp, straight edges of a part with beveled faces at a definable angle and distance to the adjacent faces.
Clash
Part interference or touching.
Clearance
The Clearance function calculates the shortest distance between two parts.  You can determine whether a part fits between two other parts.
Client
A workstation or PC that is connected to a OneSpace server and that runs the OneSpace client software.
Container
A container is a special type of assembly. It can be used to store all kinds of tools necessary for the creation of a part.  Containers hold information about parts, assemblies, workplanes, and tool bodies.
Direction
An imaginary line of infinite length with a defined orientation in 3D space. Axes, cylinders, edges, face normals, and so on, have directions.
Dynamic rotation
Dynamic rotation allows you to rotate an item in any direction you choose. Do so by clicking on the item and dragging the mouse in the direction that you wish to rotate the item.
Edge
A 3D element defining the boundary between two adjacent faces.
Edge tangent
A line (or axis) of infinite length which is defined by the edge of a part.
Face
A 3D element bounded by edges along its entire periphery. A cube, for example, has six faces, a sphere has only one face.
Face normal
The direction in 3D space perpendicular to a face. The positive face normal points out of a part; the negative face normal points into a part.
Face part
A part consisting of one or more faces which do not form a solid. A face part can have any shape but it has no volume.  Face parts are either imported surfaces, faces which were extracted or gathered from other parts, or faces which were created by a modeling program.
Facet accuracy
The basis for the graphic resolution of parts and faces is the facet model.  A finer facet model may be necessary in certain situations, for example, when saving parts to an STL (stereolithography) file. (The facet model of a part or face can be seen by switching on Wire in the Show menu.) The refinement factors that can be controlled are:    The maximum deviation of distance between the facet model curve approximation and the actual curve.  The maximum angle between individual segments of the facet model curve approximation.  In both cases, the smaller the value, the more accurate the facet model.
Feature
The system knows two different types of features:• Automatically recognized features: A group of faces that form either a hole, pocket, or boss. To be automatically recognized as features, they must be embedded in either one face or two opposite faces. • User defined features: A group of 3D elements which you define. You also specify a name for a user defined feature. All 3D elements in a feature must belong to the same part.
Group
A group is an organizational unit designed for applying one or more rights or roles to more than one person.
Inertia
A part’s tendency to remain at rest, or, if moving, to keep moving in the same direction. The rotational inertia, or moment of inertia, depends on the axis about which a part is rotating.  The Measure function calculates the rotational inertia for six different axes. The result is given in the active units.
Machine
Change the shape of one part (the target part) using another part (the tool part).
Mass
The quantity of a part or assembly measured in milligram, gram, kilogram, and so on.
Mate faces
To reposition two parts so that the specified faces are on the same plane, opposing each other.
Normal
Perpendicular to the direction of a tangent line to a curve or a tangent plane to a surface. A straight line or plane drawn from any point of a curve or surface so as to be perpendicular to the curve or surface at that point. Note: The term normal is also used to denote the distance along the normal line from the curve to the axis of abscissas or to the center of curvature.
Orthogonal
Right-angled; rectangular; as, an orthogonal intersection of one curve with another.
Part
A single solid at the lowest level in the assembly structure. It contains the following information: part name, position, geometry, topology, and part attributes.  A part is a computer representation of a real 3D object. You can think of a part as a container that holds distinct types of information such as part name, location, and geometry.
Pick point
A point which is selected in a viewport to identify a position in space (to get 2D or 3D point information), if a position tool is active, or
A point to select an object, if the selection tool (or pre-selection) is active.
Pocket
Features (a group of faces) such as bosses, holes, and pockets can be recognized by the Viewer. Pockets may be embedded in one surface only.
Position
Every object has an absolute position (location) within the global coordinate system, and also a relative position to all other objects. Positions can be changed.
Relation
A correspondence that you define between the relative positions of one part element and another part element.
String
A set of consecutive characters.
Taper
To incline a face, part, or feature at an angle relative to a draft plane. The draft plane is an imaginary plane.  The axis for the inclination is the imaginary cross-section of the draft plane and the object plane(s). It does not have to be a section of a face itself. At this cross-section the object remains unchanged.
Tolerance
The allowed amount of variation from the standard or from exact conformity to the specified dimensions, weight, etc., as in various mechanical operations.
Torus
A toroid generated by a circle; a surface having the shape of a doughnut. Also called tore.  A ring-shaped surface generated by rotating a circle around an axis that does not intersect the circle.
Translate
To move an object or element from one position to another.
Units
Units are used for the absolute measurement of geometry. The default units are millimeters, degrees, and grams.
Vector
A line (or axis) of infinite length. It must have an origin and a direction.
View set
Creo Elements/Direct Annotation uses view sets to define the link between a 3D model and 2D views. A view set determines the owning part or assembly and its direction in space for views.
Viewport
The area on the screen which is used to display 3D objects and elements.
Volume
The amount of space occupied by a part or assembly.
Workplane
A workplane is an infinite, transparent plane that can be positioned anywhere in 3D space, even within parts.  Workplanes have their own coordinate system and name, and are generally visualized by a frame.
Workplane sets
A tool to organize multiple workplanes, if they have to be stored for later use.
Worksphere
The worksphere is the 3D space in which you can work and create parts.