Question

Differentiate between MasterCam and AutoCad.

Explain with example.

Answer 1

Difference between CAD and CAM

CAD (Computer Aided Drawing/Drafting) and CAM (Computer Aided Manufacturing) are computer technologies used for mainly product designing and manufacturing purposes where former is used in designing of the product through some designing software like (AutoCAD, CATIA, Solid works, UG NX)while latter involves software for controlling the machines in the industries such as CNC machines..

Let us understand the difference between CAD and CAM through the given comparison chart.

BASIS FOR COMPARISON	CAD	CAM
Basic	CAD is the implementation of digital computers in engineering design and production.	CAM is the implementation of computers in transforming engineering designs into end products.
Involved processes	Definition of a geometric model, definition translator, geometric model, interface algorithm, design and analysis algorithms, drafting and detailing, documentation.	Geometric model, process planning, interface algorithm, NC programs, inspection, assembly and packaging.
Requires	Design conceptualization and analysis.	Control and coordination of the necessary physical processes, equipment, materials, and labour.
Softwares	AutoCAD, Autodesk Inventor, CATIA, SolidWorks	Siemens NX, Power MILL, WorkNC, SolidCAM

CAD Definition: CAD (Computer Aided Design) system generate accurately, scaled mathematical models based on the user input. Individual models are then integrated as components of an assembly to create the final product through which exact fit of the parts can be checked. Fully furnished 3D models of parts and whole assemblies for designs can be build using 3-Dimensional CAD software. The created designs can be tested virtually from any angle before we go into production of the component.

CAD = Computer + Design Software

Advantages of CAD:-

• Minimizes the requirement for huge numbers of an expensive draftsman in designing of a product.
• It can be used directly in order to generate cutting data for CNC machines.
• Scaling, re-scaling modification in drawings and models is easier and automatic and accurate.
• Storage and retrieval of models is easier.
• Design data can be shared in computerised manufacturing management systems.
• Precise 3D models can be examined before making expensive materials.
• It increases the speed of production and requires less labour.
• Multiple copies can be stored, printed and shared electronically, which eliminates the need for storing large paper drawings.

Disadvantages of CAD:-

• Power cuts and viruses can be problematic for the computerised system.
• Industrial versions of the software could be very expensive to buy especially for the start-up costs.
• Traditional drafting skills will be lost as they become unnecessary.
• Expensive training would be required to use the software, which can be time-consuming and costly.

CAM Definition: CAM (Computer Aided Manufacturing) is evolving as a central part in most of the production systems. It includes a broad range of process to be carried out automatically such as cutting, turning, milling, routing, heat cutting, engraving and even printing of solid materials. After designing and analysing a product, it is manufactured where computers are involved in manufacturing like to checking whether the product can be made or made by which process, and how much time it is going take.

CAM = Computer + Manufacturing Tool

Advantages of CAM:-

• Manufacturing requires minimum supervision and can be accomplished during unsocial work hours.
• Manufacture is less labour intensive and saves labour cost.
• Machines are accurate, and manufacturing can be repeated consistently with large batches.
• Error occurrence is negligible, and machines can run continuously.
• Prototype models can be prepared very speedily for elaborated inspection before finalising designs for manufacture.
• Virtual machining can be used to evaluate machining routines and outcomes on the screen.

Disadvantages of CAM:-

• It requires high initial investment and start-up cost.
• Machine maintenance is also costly.
• May result in loss of a workforce with high-level manual skill.
• To assure proper tooling and set up procedures it needs highly trained operatives and technicians.

MASTER CAM Features:

In Mastercam we can quickly bring our 2D sketches, clip art, photos, and CAD files to life by crafting them on screen and cutting them with easy, specialized toolpaths. Creating basic 2D art to sophisticated 3D sculpture in minutes, Mastercam Art is the ultimate tool for anyone trying to add that extra sculpted flair to their work.

Key Features:

• Create 3D sculpted models from 2D artwork.
• Create complex organic surfaces with a few simple clicks.
• Mastercam Art's various application styles let you add, subtract, intersect, and blend multiple organic shapes.
• Add textures, patterned surfaces, or wrap your art on a cylinder.
• Track your model step-by-step with Mastercam's Relief Manager, allowing quick and easy modifications any time you want.
• Using Mastercam's Solid Model Verification, you can see an on-screen simulation of your cut part before you put stock on the machine.
• Quickly create G-code for your machine using Mastercam's extensive post processor library.