Role of 3D CAD in Process Planning

In any Manufacturing Industry Process Planning plays major role through which Transformation of the Design Information takes place through a stage wise work flow. Process planning documents provides the information of transformation of Raw Material to Finished part through various processes.

Following is the one of the sample Process Planning for a Machining part-

  • Operation sequence, process and steps
  • Material shape, size and hardness
  • Selection of Jigs and Fixtures and work holding methods
  • Selection of Machines based upon part Machinability, finish and Tolerances
  • Cutting Tools and cutting Methods
  • Cutting parameters and Pattern
  • CNC code for various controllers
  • Inspection criteria stage wise
  • Inspection equipment and Gauges
  • Surface finish and accuracy
  • Graphical representations of the part in various stages of completion
  • Handling, Storage, Transportation, Shipping, Documentation
  • Systematic documentation above for easy re-use and continuous improvement.

Most of the Manufacturing companies adopt Process Planning documents along with stage wise Drawings by specifying the tasks to resources.  SolidWorks simplifies Process Planning drawings through stage wise 3D Design using configuration tools. SolidWorks Configuration and Design Table feature provides users to create multiple variants of a parts to support stage wise documents for step by step Manufacturing as follows-

  • 3D Part Model design with Manufacturing Approach by removal of material   Process Planning

 

  • Include Work Holding devise and Machine Tool details for each processProcess Planning 1
  • ·         Generate stage wise 2D Drawing with Manufacturing details

Process Planning 3

  • Include Dimensions, Tolerances, surface finish details and Inspection checklist

Process Planning 2

In a nutshell process planning encompasses the activities and functions to prepare a detailed set of plans and instructions to produce a part. The planning begins with engineering drawings, specifications, parts or material lists and a forecast of demand. The results of the planning are:

 

·         Routings which specify operations, operation sequences, work centers, standards, tooling and fixtures. This routing becomes a major input to the manufacturing resource planning system to define operations for production activity control purposes and define required resources for capacity requirements planning purposes.

·         Process plans which typically provide more detailed, step-by-step work instructions including dimensions related to individual operations, machining parameters, set-up instructions, and quality assurance checkpoints.

·         Fabrication and assembly drawings to support manufacture (as opposed to engineering drawings to define the part).

·         Manual process planning is based on a manufacturing engineer’s experience and knowledge of production facilities, equipment, their capabilities, processes, and tooling. Process planning is very time-consuming and the results vary based on the person doing the planning.

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·         Routings which specify operations, operation sequences, work centers, standards, tooling and fixtures. This routing becomes a major input to the manufacturing resource planning system to define operations for production activity control purposes and define required resources for capacity requirements planning purposes.

·         Process plans which typically provide more detailed, step-by-step work instructions including dimensions related to individual operations, machining parameters, set-up instructions, and quality assurance checkpoints.

·         Fabrication and assembly drawings to support manufacture (as opposed to engineering drawings to define the part).

·         Manual process planning is based on a manufacturing engineer’s experience and knowledge of production facilities, equipment, their capabilities, processes, and tooling. Process planning is very time-consuming and the results vary based on the person doing the planning.