Creating a Process Structure
ILG software uses a tree structure - shown through the Tightening Positions page - to build tightening processes. This structure has three classes that can have different types, features, and characteristics.
Home class: defines the home position of the tool that in the ILG setting is used for process finish. It exists only 1 Home class for 1 station.
Groups class: always describes several positions and possibly other groups. Their task is to define a sequence for the subordinate positions and groups, and to set higher-level tightening parameters.
Positions class: defines a single tightening position with all parameters for that single position.
The Groups class is responsible for building the structure of the process flows.
The groups can be additionally divided into two different types:
Group Workpiece: the workpiece is the main group and represents one component variant of the user or one tightening process. The workpiece is the start point for each tightening sequence. Only one workpiece is used per process.
Group Level: a level is an extension of a normal group. It can run its own images for the process visualization.
A level is used when the Process / Workpiece has several tightening layers that cannot be visualized in one main picture or require different tightening sequences of the same part.
The construction of a tightening process must always start with the workpiece.
The workpiece can then be structured by making different groups, levels and positions. The user can make as many groups / positions into an existing workpiece group as it is needed. The elements can be put freely, depending on the application.
Properties of the Classes
It is important to know the different properties of the individual classes to design the optimal process structure.
The properties assigned to the Groups class are:
Group ID - only the ID of the Workpiece is also the process ID
Order
Loosening strategy
Reject management
Referencing
Images
The properties assigned to the Positions class are:
Position ID
Tightening programs
Coordinates
Enabling / Disabling volume
Geometry condition
ILG software visualizes the hierarchical structure - and thus the work sequence of a process - by moving the individual elements in the process list.
