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FUNDAMENTALS OF CAM By Using MASTERCAM

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Amiraj College Of Engineering & Technology
Amiraj College Of Engineering & Technology

This document provides an overview of using MasterCAM software for computer-aided manufacturing (CAM). It outlines the objectives of learning MasterCAM, including creating 2D geometries and toolpaths and generating NC codes. It then discusses CAD/CAM systems in general and how they work by developing part geometries, defining tooling and fixturing, and generating tool paths and NC code. The document proceeds to explain the basic steps in MasterCAM, including drawing 2D parts, selecting tools, defining tool parameters, generating contour toolpaths, and displaying the results. It concludes by noting that MasterCAM does not automatically select an optimal toolpath but rather the user must try different options to determine the best approach.

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Prepared by: Asst.Prof.Harin Prajapati (HOD Mechanical ,ACET) Ch-1 FUNDAMENTALS OF CAM By Using MASTERCAM Subject:- CAM Code:-2171903
Objectives To understand the need for CAD/CAM in Lean Manufacturing. To be able to create 2D Geometries in MASTERCAM To be able to create 2D toolpaths in MASTERCAM To use MASTERCAM for identifying optimum toolpaths To generate NC codes using MASTERCAM
CAD/CAM Computer-aided design (CAD) is the use of computer systems to assist in the creation, modification, analysis, or optimization of a design. Computer-aided manufacturing (CAM) is the use of computer systems to plan, manage, and control the operations of a manufacturing plant through direct or indirect computer interface with plants resources.
Need for CAD/CAM To increase productivity of the designer To improve quality of the design To improve communications To create a manufacturing database To create and test toolpaths and optimize them To help in production scheduling and MRP models To have effective shop floor control
How do CAD/CAM systems work? Developing NC code requires an understanding of: 1. Part geometry 2. Tooling 3. Process plans 4. Tolerances 5. Fixturing Most CAD/CAM systems provide access to: 1. Part geometry 2. Tooling
Instructions can be generated for a generic NC machine A set of tool paths and positions can be automatically generated These paths can be edited and modified These paths and instructions can then be posted to a specific machine
The Design Process : Then and Now Before CAD After CAD
CAD/CAM Product Cycle CAD/CAM Product Cycle
CAD/CAM Support AutoCAD 2016 Pro Engineer 5. MasterCAM Creo 2.0 Catia v5
What do I need to begin MasterCAM? Part geometry Draw or import Tooling Library or create Process plans Fixtures Define orientation and location
MasterCAM Mastercam is a three-dimensional geometry creation engine along with features to aid in tool path generation and verification. MasterCAM allows tool path planning and NC code generation for a given part. This part can either be drawn in MasterCAM or imported from other CAD packages
MasterCAM Drawing Geometrical part drawing In-built CAD package Two-dimensional parts Three-dimensional parts Translators (include) IGES (international Graphics Exchange Standard) DXF (AutoCad) CADL (CADKey)
Tool Path Generation using MasterCAM Tool path generation Extensive Tool library Machining parameter selection NC program generator Animation to visualize machining operations
Getting Started with 2D Drawing Create simple 2D Geometries using basic shapes say a Rectangle
Building 2D Geometry Place and Dimension the Shape
Creating Shape with Lines and Rectangles Complete the Basic profile. We will now add arcs, fillets and trim entities
Adding Arcs, Radius and Fillets Click on Main Menu [Create- Arc-pt dia cir] on to dimension and place arcs/circles Click on Main Menu [Create-Fillets] to create Fillets. Dimension them Suitably.
Completing our Mock Profile To Trim or Cut entities Main Menu [Modify-Trim-2 Entities] to get required profile. Dont forget to Save your file
Getting started with Toolpaths Click on Main Menu [Toolpaths]. MasterCAM lists the different machining operations
Contouring Options By Selecting Contour the various Contouring Options are listed. Select Chain and the geometry chains up and shows tool travel direction
Defining Tool Parameters Select the Contour type and Tool Parameters Window pops up. Feed the Right Parameters and Right Click to Select Specific Tools.
Selecting the Tools MasterCAM has a whole range of tools in a tool library from which tool selections can be made. Now feed the correct parameters. You can also specify your own tools.
Displaying Toolpaths Once both the Tool parameters and Contour Parameters have been Correctly defined. Click Ok to display the Toolpath.
Toolpath Optimization? MASTERCAM does NOT give a minimum time Toolpath. It gives the toolpath that has been selected. Exercise : Try out different toolpaths from the toolpaths pallete for the part in the tutorial. Which one is optimal? Why?
FUNDAMENTALS OF CAM By Using MASTERCAM

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FUNDAMENTALS OF CAM By Using MASTERCAM

  • 1. Prepared by: Asst.Prof.Harin Prajapati (HOD Mechanical ,ACET) Ch-1 FUNDAMENTALS OF CAM By Using MASTERCAM Subject:- CAM Code:-2171903
  • 2. Objectives To understand the need for CAD/CAM in Lean Manufacturing. To be able to create 2D Geometries in MASTERCAM To be able to create 2D toolpaths in MASTERCAM To use MASTERCAM for identifying optimum toolpaths To generate NC codes using MASTERCAM
  • 3. CAD/CAM Computer-aided design (CAD) is the use of computer systems to assist in the creation, modification, analysis, or optimization of a design. Computer-aided manufacturing (CAM) is the use of computer systems to plan, manage, and control the operations of a manufacturing plant through direct or indirect computer interface with plants resources.
  • 4. Need for CAD/CAM To increase productivity of the designer To improve quality of the design To improve communications To create a manufacturing database To create and test toolpaths and optimize them To help in production scheduling and MRP models To have effective shop floor control
  • 5. How do CAD/CAM systems work? Developing NC code requires an understanding of: 1. Part geometry 2. Tooling 3. Process plans 4. Tolerances 5. Fixturing Most CAD/CAM systems provide access to: 1. Part geometry 2. Tooling
  • 6. Instructions can be generated for a generic NC machine A set of tool paths and positions can be automatically generated These paths can be edited and modified These paths and instructions can then be posted to a specific machine
  • 7. The Design Process : Then and Now Before CAD After CAD
  • 9. CAD/CAM Support AutoCAD 2016 Pro Engineer 5. MasterCAM Creo 2.0 Catia v5
  • 10. What do I need to begin MasterCAM? Part geometry Draw or import Tooling Library or create Process plans Fixtures Define orientation and location
  • 11. MasterCAM Mastercam is a three-dimensional geometry creation engine along with features to aid in tool path generation and verification. MasterCAM allows tool path planning and NC code generation for a given part. This part can either be drawn in MasterCAM or imported from other CAD packages
  • 12. MasterCAM Drawing Geometrical part drawing In-built CAD package Two-dimensional parts Three-dimensional parts Translators (include) IGES (international Graphics Exchange Standard) DXF (AutoCad) CADL (CADKey)
  • 13. Tool Path Generation using MasterCAM Tool path generation Extensive Tool library Machining parameter selection NC program generator Animation to visualize machining operations
  • 14. Getting Started with 2D Drawing Create simple 2D Geometries using basic shapes say a Rectangle
  • 15. Building 2D Geometry Place and Dimension the Shape
  • 16. Creating Shape with Lines and Rectangles Complete the Basic profile. We will now add arcs, fillets and trim entities
  • 17. Adding Arcs, Radius and Fillets Click on Main Menu [Create- Arc-pt dia cir] on to dimension and place arcs/circles Click on Main Menu [Create-Fillets] to create Fillets. Dimension them Suitably.
  • 18. Completing our Mock Profile To Trim or Cut entities Main Menu [Modify-Trim-2 Entities] to get required profile. Dont forget to Save your file
  • 19. Getting started with Toolpaths Click on Main Menu [Toolpaths]. MasterCAM lists the different machining operations
  • 20. Contouring Options By Selecting Contour the various Contouring Options are listed. Select Chain and the geometry chains up and shows tool travel direction
  • 21. Defining Tool Parameters Select the Contour type and Tool Parameters Window pops up. Feed the Right Parameters and Right Click to Select Specific Tools.
  • 22. Selecting the Tools MasterCAM has a whole range of tools in a tool library from which tool selections can be made. Now feed the correct parameters. You can also specify your own tools.
  • 23. Displaying Toolpaths Once both the Tool parameters and Contour Parameters have been Correctly defined. Click Ok to display the Toolpath.
  • 24. Toolpath Optimization? MASTERCAM does NOT give a minimum time Toolpath. It gives the toolpath that has been selected. Exercise : Try out different toolpaths from the toolpaths pallete for the part in the tutorial. Which one is optimal? Why?