A number of DFM rules for design, more specific than the preceding guidelines, have been developed.
1. Space holes in machined, cast, molded, or stamped parts so they can be made in one operation without tooling weakness. This means that there is a limit on how close holes may be spaced due to strength in the thin section between holes.
2. Avoid generalized statements on drawings, like “polish this surface” or “tool marks not permitted,” which are difficult for manufacturing personnel to interpret. Notes on engineering drawings must be specific and unambiguous.
3. Dimensions should be made from specific surfaces or points on the part, not from points in space. This greatly facilitates the making of gages and fixtures. The use of GD&T methods makes this point moot.
4. Dimensions should all be from a single datum surface rather than from a variety of points to avoid overlap of tolerances.
5. The design should aim for minimum weight consistent with strength and stiffness requirements. While material costs are minimized by this criterion, there also will usually be a reduction in labor and tooling costs.
6. Whenever possible, design to use general-purpose tooling rather than special dies, form cutters, and similar tools. An exception is high-volume production where special tooling may be more cost-effective.
7. Use generous fillets and radii on castings and on molded, formed, and machined parts.
8. Parts should be designed so that as many operations as possible can be performed without requiring re-positioning. This promotes accuracy and minimizes handling.
It is valuable to have manufacturing engineers and specialists involved in design decision making so that these guidelines and others they bring can inform the process.
study note of FDM : Specific Design Rules
Download excellent quality study note and ebooks of amie section a in pdf,ppt,doc format
Return to “Design and Manufacturing (AD 301))”
Jump to
- Free Download For AMIE Section A
- ↳ Free Download AMIE Section a Unsolved Question Paper
- ↳ Free Download AMIE Section A study notes on AD 301
- ↳ Free Download AMIE Section A study notes on AD 302
- ↳ Free Download AMIE Section A study notes on AD 303
- ↳ Free Download AMIE Section A study notes on AD 304
- Free Download For AMIE Section B
- ↳ Free Download AMIE Section B Question Paper Department wise
- ↳ Free Download AMIE Section B study notes for electronics & Comm. Engineering
- ↳ Free Download AMIE Section B study notes for civil Engineering
- ↳ Free Download AMIE Section B study notes for Computer Science and Engineering
- ↳ Free Download AMIE Section B study notes for Electrical Engineering
- ↳ Free Download AMIE Section B study notes for Mechanical Engineering
- ↳ Free Download AMIE Section B study notes for Engineering Management
- AMIE NBCAFE
- ↳ AMIE NBCAFE
- LIST OF SECTION A & B QUESTION PAPERS/STUDY MATERIAL FOR PREMIUM MEMBERS
- GENERAL DISCUSSION
- ABOUT AMIE
- SECTION A SYLLABUS
- SECTION B SYLLABUS
- SECTION A STUDY MATERIAL
- ↳ Design and Manufacturing (AD 301))
- ↳ Material Science (AD302)
- ↳ Computing and Informatics (AD 303)
- ↳ Society and Environment (AD 304)
- SECTION B STUDY MATERIAL
- ↳ Electronics and Communication Engineering
- ↳ Study Material
- ↳ computer science Engineering
- ↳ Study Material
- ↳ Electrical Engineering
- ↳ Study Material
- ↳ Mechanical Engineering
- ↳ Study Material
- ↳ Civil Engineering
- ↳ Study Material
- ↳ Engineering management Study Materials
- SECTION A OLD QUESTION PAPER
- ↳ Fundamental of Design and Manufacturing (AD 301))
- ↳ Material Science & Engineering (AD302)
- ↳ Computing and Informatics (AD 303)
- ↳ Society and Environment (AD 304)
- SECTION B OLD QUESTION PAPER
- ↳ Computer Science & Engineering
- ↳ Electronics & Communication Engineering
- ↳ Electrical Engineering
- ↳ Mechanical Engineering
- ↳ Civil Engineering
- ↳ Engineering Management
- NEW TO AMIE
- M.E / M.TECH AFTER AMIE
- Results
- Grade Card
- GATE PREVIOUS QUESTION PAPERS
- ↳ Electronics & ommunication
- ↳ Electrical Engineering
- ↳ Mechanical Engineering
- ↳ computer science Engineering
- ↳ Civil Engineering
- ↳ Tips and Tricks to crack GATE
- Project Work & Laboratory Experiment related Queries
- Important Form Download
- AMIE Section B Video Tutorial
- ↳ Electronics and Communication Engineering
- ↳ Electrical Engineering
- ↳ Computer Science & Engineering
- Guest Downloads
- AMIE ONLINE COACHING
- ↳ AMIE ONLINE COACHING
- ↳ How It Work
- ↳ Video Tutorial
- AMIE NBCAFE PREMIUM MEMBER
- ↳ How To Become Premium Member
- ↳ QUESTION PAPERS ONLY FOR PREMIUM MEMBERS
- ↳ PREMIUM MEMBER DOWNLOADS SEC A
- ↳ PREMIUM MEMBER DOWNLOADS SEC B
- ↳ Text Book for AMIE Section A
- ↳ Text Book for AMIE Section B Branch wise
- ↳ Premium Member related quire
- ↳ How to do M Tech after AMIE without GATE score
- ↳ SEC A QUESTION PAPERS FOR PREMIUM MEMBERS
- ↳ CE SEC B QUESTION PAPERS
- ↳ ME SEC B QUESTION PAPERS
- ↳ ENGINEERING & MANAGEMENT SEC B QUESTION PAPERS
- ↳ ECE SEC B QUESTION PAPERS
- ↳ EE SEC B QUESTION PAPERS
- ↳ CSE SEC B QUESTION PAPERS
- AMIE SECTION A FOR NON-DIPLOMA
- ↳ Question Paper/Text Book for AMIE Section A Non-Diploma