8 Questions
What is the primary objective of reducing idle time in machine design?
To enable easy clamping and unloading
What is the main reason for designing locating and supporting surfaces to be replaceable and standardized?
To enable interchangeable manufacture
Why is it essential to harden the locating and supporting surfaces of a machine?
To retain accuracy and prevent wear and tear
What is the purpose of incorporating pins and other devices in machine design?
To prevent incorrect placement of the component or cutting tool
What is the key consideration for the economic soundness of a machine design?
The cost of design and manufacture should be in proportion to the quantity and price of the product
Why is it essential to ensure easy manipulation of a machine?
To minimize the fatigue of the workman
What is the primary consideration for the initial location of a workpiece?
The workpiece should be located on exactly 3 points in any plane
Why should clamping occur directly above the points supporting the workpiece?
To avoid distortion and springing
Study Notes
Reduction of Idle Time
- Enable easy clamping and unloading to minimize idle time
Cleanliness of Machining Process
- Design should minimize time wasted in cleaning scarfs, burrs, chips, etc.
Replaceable Parts and Standardization
- Locating and supporting surfaces should be replaceable and standardized for interchangeable manufacture
Provision for Coolant
- Design should allow for cooling of the tool and washing away of swarfs and chips
Hardened Surfaces
- Locating and supporting surfaces should be hardened materials to prevent wear and retain accuracy
Inserts and Pads
- Inserts and pads should be riveted to clamps to prevent damage to finished workpiece surfaces
Fool-Proofing
- Incorporate pins and devices to prevent incorrect placement of components or fitting of cutting tools
Economic Soundness
- Equipment design and manufacture should be economically viable, proportional to production quantity and price
Easy Manipulation
- Equipment should be lightweight and easy to handle to prevent worker fatigue and provided with adequate lift aids
Initial Location
- Ensure workpiece is located on no more than 3 points in a plane to prevent rocking and spring loading
Position of Clamps
- Clamping should occur directly above points supporting the workpiece to prevent distortion and springing
This quiz covers the fundamental principles of designing manufacturing processes, including minimizing idle time, maintaining cleanliness, and standardizing replaceable parts.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
