This guide is concerned with explaining the system of tolerances and fits contained in the British Standard No 4500 Part 1 and how to use this system. This is a national standard which embodies the international standard No R286.

Note that the numbers in parentheses refer to the ‘List of Definitions” and the Introduction refers to these and to Figures 1 and 2.

Reference is made throughout to the application of tolerances to “shafts” and “holes” and an impression is often created that the system of tolerances described in BS 4500 is suitable only for use with circular features (1). This is not the case and the system can be applied to features having parallel planes. Common examples of such use are the applications to bar stock of square, rectangular and hexagonal section and to keyways and splines.

[Description and screenshot taken from the SEED Curriculum for Engineering Design page for this guide. (c) The Design Society used under the terms of their (CC BY-NC-SA 3.0) license.]

The Blender 3D Design course is intended to offer students an introduction to the world of computer generated 3-D modeling and animation. As an introductory course, it provides a basic understanding of the skills and techniques employed by 3-D designers in a wide range of applications. The course will explore basic mesh modeling, applying textures and materials to 3-D objects, lighting, animation and rendering. It should provide a good basis for further independent study in architectural, engineering, and theatrical modeling and game design. It is self-paced, meaning that you can pick and choose the Learning Units, Video Tutorials or PDF tutorials as you see fit. The sequence of Learning Units are a suggested path of learning Blender but users are welcome to use this material in any way that suits theirr purposes. There are 2 progressive levels of study in this course: Beginning Level and Intermediate Level. Learning Units 1 through 12 comprise the Beginning Level Course and Learning Units 13 through 24 comprise the Intermediate Level Course (Note: The Intermediate level Course is currently under development.)

To take this course, you must have access to a personal computer on which you can download all of the required software (free) and execute all of the required assignments. Please note that the course as presented here does not contain the full content of the course as taught at Tufts. The included content is based on material the Tufts faculty and instructors choose to include, as well as factors such as content preparation, software compatibility, and intellectual property and copyright restrictions. Tufts are working on a replacement OCW Blender course, which will reflect the new 2.5x version of Blender. It will include additional learning units, new video and PDF tutorials, and different projects.

[Description and screenshot taken from Tufts OCW page for this course. (c) Tufts University used under the terms of their CC-NC-SA license.]

[Description and screenshot taken from MIT OCW page for this course. (c) MIT used under the terms of their CC-NC-SA license.]

This course covers topics in surface modeling: b-splines, non-uniform rational b-splines, physically based deformable surfaces, sweeps and generalized cylinders, offsets, blending and filleting surfaces; and solid modeling: constructive solid geometry, boundary representation, non-manifold and mixed-dimension boundary representation models, octrees. Other topics also covered are: non-linear solvers and intersection problems, robustness of geometric computations, interval methods, finite and boundary element discretization methods for continuum mechanics problems, scientific visualization, variational geometry, tolerances, inspection methods, feature representation and recognition, and shape interrogation for design, analysis, and manufacturing.

[Description and screenshot taken from MIT OCW page for this course. (c) MIT used under the terms of their CC-NC-SA license.]

This course is a first subject in engineering design. A major element of the course is design of a robot to participate in a challenge that changes from year to year. This year, the theme is cleaning up the planet as inspired by the movie Wall-E.

From its beginnings in 1970, the 2.007 final project competition has grown into an Olympics of engineering. See this MIT News story for more background, a photo gallery, and videos about this course.

After taking this course students should be able to: generate, analyze, and refine the design of electro-mechanical devices making use of physics and mathematics; describe and list uses in mechanical systems of common machine elements including fasteners, joints, springs, bearings, gearing, clutches, couplings, belts, chains, and shafts; apply experimentation and data analytic principles relevant to mechanical design; and communicate a design and its analysis (written, oral, and graphical forms).

Special software is required to use some of the files in this course: .zip, .sldprt, .xls, .swj, .sldasm, .rpt, .xlo, .igs, .rm, .ord, and .dxf.

[Description and screenshot taken from MIT OCW page for this course. (c) MIT used under the terms of their CC-NC-SA license.]

The course provides students with an opportunity to design, optimize, manufacture, and validate a physical system component. The projects from the course are included here. This course is offered during the Independent Activities Period (IAP), which is a special 4-week term at MIT that runs from the first week of January until the end of the month.

This course provides students with an opportunity to conceive, design and implement a product, using rapid prototyping methods and computer-aid tools. The first of two phases challenges each student team to meet a set of design requirements and constraints for a structural component. A course of iteration, fabrication, and validation completes this manual design cycle. During the second phase, each team conducts design optimization using structural analysis software, with their phase one prototype as a baseline.

[Description and screenshot taken from MIT OCW page for this course. (c) MIT used under the terms of their CC-NC-SA license.]

The course develops students’ competence and self-confidence as design engineers. Emphasis is on the creative design process. The course covers the design stages of Design, Analysis, Rapid prototyping, Visualization and presentation, Planning and Manufacturing.

Lessons include:
Basics and Principles: “CAD – History, Present and Future” “Principles of CAD and Terminology” “CAD Objects” “CAD Software – simplified 2D CAD” “CAD Software – advanced”.
Practical Lessons “Drawing in 2D” “Engineering drawings”