Celdas De Manufactura

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Module

Basic Information
Pro/NC enables you to create a manufacturing model using Pro/ENGINEER models. Using this manufacturing model you can provide the proper information to the NC machine that is creating the model.

Objectives
After completing this module, you will be able to: • Understand the process of creating a manufacturingmodel

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MANUFACTURING PROCESS
Pro/NC creates the data necessary to machine a Pro/ENGINEER model. To accomplish this you must work through a logical sequence of steps. These steps begin with the creation of the manufacturing model and end with the post-processed data for the NC machine.
REFERENCE MODEL WORKPIECEOPERATIONS

MANUFACTURING MODEL

FIXTURE SETUPS

SET UP PROCESS ENVIRONMENT

TOOLS

DEFINE NC SEQUENCES

CREATE CL DATA FILES (APT)

POST-PROCESS

DRIVE NC MACHINE TOOL

Figure 1: Pro/NC Workflow

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Fundament als of M ill ing

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MANUFACTURING MODEL
A manufacturing model is an assembly of a reference model (partor assembly) and a workpiece; however, in some situations a workpiece is not required. The reference model represents the model that is being machined and the workpiece represents the stock that is used to build the model. The manufacturing model can also include a component that represents the machine fixture. Pro/NC enables you to establish the manufacturing model using one of the two followingsub-types: • •
NC Part NC Assembly

NC Part
Part machining requires that you define a single reference model and workpiece to create the manufacturing model.

Reference Model

Workpiece

Figure 2: Reference Model and Workpiece

Figure 3: Part Manufacturing Model

Bas ic Info rm at ion

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NC AssemblyAssembly machining enables you to define complex manufacturing assemblies. You can assemble multiple parts, assemblies, or previously manufactured assemblies or you can create parts directly in Manufacturing mode. There must be at least one design model; however, the inclusion of a workpiece is optional.

Figure 4: Reference Models

Figure 5: Assembly Manufacturing Model

ASSEMBLY MACHINING
Amajor difference between Part and Assembly machining is that in Part machining all the components of the manufacturing process (Operations, Workcells, or NC Sequences) are part features that belong to the workpiece, while in Assembly Machining these are assembly features that belong to the manufacturing assembly. In addition to assembly feature behavior, Assembly Machining enables you to createmanufacturing features on assemblies, rather than importing a single part into the manufacturing model.

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Fundament als of M ill ing

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The following are some general principles of Assembly Machining: • • • In assembly manufacturing, features are stored in the manufacturing model, as assembly features. Material removal cannotbe performed on an Assembly Manufacturing model that has no workpiece. If the Assembly Manufacturing model has a workpiece, the material removal feature is only visible at the Part level when the visibility level is explicitly set to the Part. By default it is set to the assembly.

PROCESS ENVIRONMENT
Once the manufacturing model is defined, the process environment must be set up. The processenvironment includes the following: • • • Operation (Workcell, Machine Coordinate System, and Retract Reference) Tooling Fixture

Operation
An operation represents the setup required for a manufacturing model. Every manufacturing model must contain at least one operation. Each operation consists of the following required items:
• • •

Workcell - represents the machine for the operation...