Articles
Every good engineer want efficient gearboxes for their products. This article helps engineers understand the differences between types of gearing in terms of efficiency and also gives tips for improving gearbox durability
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 Low Profile Retaining Rings
Smalley Hoopster® Rings fit into much shallower grooves than regular snap rings or retaining rings. Where retaining rings once were not an option because of groove depth, the low profile, precision circularity & small radial size allow the Hoopster to be an unobtrusive component in the assembly, ideal for thin wall tubes. Hoopster Retaining Rings are easily installed without special tools. Standard sizes are stocked from 3/8" to 3" and offered in carbon and 302 stainless steel. Specials can be made with No-Tooling-Charges™. www.smalley.com/hoopster
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The government has been known to mandate technology be invented and used, as if our laws take trump the laws of physics and thermodynamics. Ken Korane points to one such instance and suggest others the government should consider.
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 Lee Spring New Catalog Measures Up
Introducing Lee Spring's 2012 Catalog featuring over 21,000 Stock Springs including New Metric Torsion Springs, Metric REDUX™ Wave Springs, New DIN Standard Metric Compression and Extension Springs, as well as expanded Inch Belleville Washer and Wave Spring offerings. Unique Stock products include LeeP™ Plastic Composite Springs, BANTAM™ Mini Compression Springs, Lite Pressure™ Compression Springs and the full line of both MS24585 and MS24586 MIL-SPEC Springs. Extensive Custom Spring, Wire Form, Fourslide and Stamping capabilities supported by expert engineering. ISO 9001 Certified. RoHS, REACH and ITAR Compliant. www.leespring.com
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Stick-slip chatter results from static friction in bearings temporarily stopping a shaft from turning. It can cause jerky starts and damage equipment. Here's how to combat the main culprits, low oil-film thickness and torsional vibration.
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Is thicker better? Not when it comes to bushings. Discover the hidden advantages of today's thin-walled plastic bushings.
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An expert welder recently started an online forum about welding and tooling features. Find out more at this blog.
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Airbus engineers went so far as to use lighter shims in the 1.2 million lb Airbus A380 superjumbo jet to save 17.5 lb/plane.
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New Products
The Conti-V Varispeed wide V-belt is for variable-speed drives used in the agricultural industry. The Conti-V Multibelt is for use in clutch drives. The heavy-duty timing belts are energy efficient and virtually maintenance-free.
To transmit high power safely, the EPDM-based Varispeed belt has a low-stretch aramid tensile member, is maintenance-free, and temperature stable from –30 to 140°C.
The friction-reduced texture of the Multibelt ensures gentle and silent clutching. The belt's transverse-cord reinforcement provides high lateral stiffness, and allows for safe transmission of large loads.
ContiTech North America Inc.
"Crown" gear drives feature heat-treated AGMA Class 10 spiral-bevel gears and nonmagnetic stainless-steel shafts for maintenance-free operation.
The drives’ precision-hardened and ground ball bearings handle speeds up to 2,000 rpm. The internal gears are permanently mounted to the shafts with locking pins for a resilient and durable connection in heavy-load applications.
The hand-shimmed and hand-assembled drives have perfect bearing and gear alignment. They are prelubricated during assembly, then completely enclosed in a heavy-duty anodized aluminum housing.
Standard two and three-way models are available with 1:1 and 2:1 speed ratios in shaft-diameter combinations of 3/8, ½, 5/8, and ¾ in.
Zero-Max Inc.
News from MD
Today's Additive Manufacturing: Injection molding, living hinges, overmolding and more
Sponsored by: Objet
Date: Febbruary 23rd, 2012
Time: 2:00pm ET/11:00am PT
During This Webinar You Will Learn:
• Exposing the real range of 60+ materials
• How are companies using these materials for testing?
• See over-molding successes for 3M, Devicix and Sanford
• How Digital Materials may be your next production part
• How VistaTek is using additive manufacturing to grow injection molding
Register today!
ARCHIVED WEBCASTS AVAILABLE FOR FREE VIEWING
Click Here for a list of archived Machine Design webcasts.
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