Bellows Technology

Robert.Repas — Fri, 06 Nov 2009 19:38:16 -0600

Jim Barkand from Servometer demonstrates three different bellows construction techniques to Lee Teschler of MACHINE DESIGN. 8:23

New ASME Y14.5 - 2009 Standards for GD&T

Josh Rader — Tue, 20 Oct 2009 09:04:27 -0500

Authored by:

Al Neumann
Scott Neumann
Technical Consultants Inc.
Longboat Key, Fla.

Edited by Leland Teschler
leland.teschler@penton.com

Key points:
• Geometric concepts are now much easier to read and understand.

• Revisions emphasize use of basic dimensions and geometric tolerancing as the preferred way of controlling the form, orientation, and location of features.

Precision Plastic Components – Micromolding is More Than Small Parts

Jessica Harris — Fri, 11 Sep 2009 11:52:26 -0500

OEM design projects are increasingly requiring tighter tolerances, smaller or lighter components and high reliability/quality. These are challenges that must be addressed quickly by engineers in order to get the final products to market on time, even if the solution is custom in nature.

DC Motors - Your Complete DC Motor Drive Systems

Reggie Hall — Tue, 25 Aug 2009 13:10:46 -0500

With the largest consolidated portfolio of miniature and micro motor drive system technologies, MicroMo specializes in the design and manufacture of complex, high precision miniature and micro drive motor systems for challenging areas of application such as Medical Devices, Handling Automation, Industrial machinery and Precision Optics. MicroMo provides engineers with the information they need to specify or purchase electric motors including DC Motors, Coreless DC Motors, Flat Coreless DC Motors, and High Power PMDC Motors.

Get Reliable Results From Rubber Test Data

Josh Rader — Tue, 16 Jun 2009 09:06:30 -0500

Authored by:
Dr. Ben Chouchaoui
President
Windsor Industrial Development Laboratory Inc.
Windsor, Ont., Canada

Edited by Jessica Shapiro
jessica.shapiro@penton.com

Shoulder-Fillet Stress Calculations Clarified

Josh Rader — Tue, 07 Apr 2009 13:15:06 -0500

Authored by:
Jessica Shapiro
jessica.shapiro@penton.com

Key points
• Shoulder fillets are notches that generate transverse stresses under axial loading.
• Von Mises equivalent stresses let engineers determine the maximum principle stress when tension or bending combines with torsion.
• The location of the maximum stress in the fillet radius is determined in degrees.

Resources

Direct Digital Manufacturing: Impact and Opportunity

Reggie Hall — Tue, 10 Mar 2009 07:54:24 -0500

At the departmental level, justification for fixtures can be quite simple. Those that use direct digital manufacturing for this application report savings of 50 to 75 percent, when compared to traditional machining and fabricating processes. So, if the typical fixture costs $500, direct digital manufacturing has the potential to produce the same item for $125 to $250. Coupled with the rapid response to manufacturing challenges, this cost reduction makes it is easy to justify direct digital manufacturing of fixtures.

Orr on Engineering: Collective IQ: Digital technology Could Upgrade Our Smarts

Josh Rader — Thu, 08 Jan 2009 13:38:23 -0600

Together with Hiroshi Ishii of MIT’s Media Lab, I helped organize the recent Program for the Future (programforthefuture.org), a conference to honor Doug Engelbart on the 40th anniversary of “The Mother of All Demos” (en.wikipe

Webcast presenting the basics of the Direct Gear Design

Nicola Farman — Wed, 16 Jan 2008 15:56:20 -0600

Invention of the gear hobbing process about 150 years ago revolutionized not only gear fabrication, but also gear design. Times have changed. There is a clear trend to gear customization. This webcast presents the Direct Gear Design method – an alternative approach to traditional analysis and design of involute gears. It has successfully been implemented in many gear transmissions for aerospace, military, automotive, medical, agricultural, and other industries.

Scanning for ideas: A space-age refrigerator

Thu, 13 Dec 2007 02:00:00 -0600

It is efficient enough to let its helium last for extended periods in orbit and does not require gravity.

Engineering Handbook In Excel

Thu, 13 Apr 2006 02:00:00 -0500

The engineering handbook Roark's Formulas for Stress and Strain has been computerized to run in Excel. The software follows the book's organization of formulas, by chapter, table, and case. The software lets users open an application in Excel, load models, put in values, and solve. A Superposition wizard handles multiple load calculations on beams and plates. These features and others let users quickly decide whether it's necessary to run the numbers through FEA programs.

Better bonds

Thu, 12 Jan 2006 02:00:00 -0600

Lawrence W. Fisher
Manager, Mechanical Systems Dept.
Measurement Analysis Corp.
Torrance, Calif.

Study focuses on near-perfect lens

Thu, 17 Nov 2005 02:00:00 -0600

Scientists have long sought to minimize lens distortion, but it's only within the last five years that production of a near-perfect lens has become a possibility.

Looking back in time 50 Years Ago In MACHINE DESIGN, November 1955

Thu, 17 Nov 2005 02:00:00 -0600

Midget servomotor developed for aircraft: A two-phase servomotor developed by General Electric is believed to be the smallest currently used on aircraft. Originally developed for use in a gyrocompass unit, it may be adaptable to other uses, say GE engineers. The motor weighs 1.2 oz, measures 1.2 in. long, and has a diameter of 0.625 in. It is rated at 26 V with a no-load speed of 21,000 rpm.

The attraction of Ferrofluid Bearings

Thu, 03 Nov 2005 02:00:00 -0600

W. Ochonski
Professor of Mechanical Engineering
University of Mining and Metallurgy
Krakow, Poland

Bearings in precision equipment such as computer disk-drive spindles, laser scanners/printers, and gyroscopes, need excellent stiffness and damping qualities to run true at high speeds. Until recently, designers of these applications relied on hydrodynamic oil and gas bearings, or ball bearings.

Latest Basics of Design Engineering Content Feed

Bellows Technology

New ASME Y14.5 - 2009 Standards for GD&T

Precision Plastic Components – Micromolding is More Than Small Parts

DC Motors - Your Complete DC Motor Drive Systems

Get Reliable Results From Rubber Test Data

Shoulder-Fillet Stress Calculations Clarified

Direct Digital Manufacturing: Impact and Opportunity

Orr on Engineering: Collective IQ: Digital technology Could Upgrade Our Smarts

Webcast presenting the basics of the Direct Gear Design

Scanning for ideas: A space-age refrigerator

Engineering Handbook In Excel

Better bonds

Study focuses on near-perfect lens

Looking back in time 50 Years Ago In MACHINE DESIGN, November 1955

The attraction of Ferrofluid Bearings