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Archives December 2013

Archives

December 2013

FEATURES

Company Profile: Rave Gears

The story of RAVE Gears in Seguin, Texas, is a short one. But the roots of the company date back almost 30 years.

The story of Rave Gears in Seguin, Texas is a short one. Built from the ground-up just one year ago, today they produce high-quality, precision CNC machining, prototyping, reverse engineering, and supply of gears and gear shafts. But the roots of the company date back almost 30 years ago. Before they were CEO and president, […]
Tim Byrd

A Plastic Gear Design Update

Plastic provides great design freedom, allowing for gear configurations too difficult or expensive to create with metal.

Plastic gears have a long history in autos, appliances, office equipment, tools, and elsewhere. Designers continue to extend their use in transferring torque and motion as polymers improve and processing gains in sophistication. They often choose plastic for gears over metal because of the many benefits plastic offers. Abrasive Advances Plastic provides great design freedom, […]
Gear Solutions Magazine

Economics of Machining Bevel Gears on Multi Tasking Machines

Historically, there were two main ways to make a bevel gear. In the past five years, things have changed significantly.

Bevel gears have been made for over 50 years. There have been several incremental improvements to the initial methods, but the fundamental principles of machining these gears remain the same. Historically, there were two main ways to make a bevel gear. One method used specialized equipment and tooling; the other one used very simple tools […]
Nitin Chaphalkar

Advances in Abrasive Technology for Grinding Gears from Solid

Advances in wheel technology, especially those related to dressable vitrified bonds utilizing engineered ceramic grains, offer a significant shift in thinking of how to rough shape a gear form.

Past reviews of the status of grinding for the gear industry have inevitably focused on the process as one of finishing of steel gear profiles, diameters, bores, etc. in the hardened state [1]. Discussions have typically revolved around the relative benefits of grinding in comparison to hard cutting processes such as hard hobbing and power […]
Michael Hitchiner, David Graham, Phil Plainte

DEPARTMENTS

Dealing with “Ghost Signals”

Ultrasonic “wrap around” and the display of misleading ultrasonic reflections when testing large cross-section forgings.

During my time in the nondestructive testing field, I have experienced one anomaly continually arise while performing specific ultrasonic examinations of forgings. I’m speaking of a phenomenon often called “wrap around” or “ghost signals,” which are caused from an undesirable pulse repetition frequency in a flaw detector’s electronic settings. Personally, I have seen this cause […]
Joseph Meyers

Using the Proper Computational Tool

A discussion of computational tools required to design gear teeth for the minimization of transmission error and, consequently, gear noise.

As a practical matter, audible gear noise is subject to a tortuous path from the gear mesh to the ear. From a meshing gear pair, vibration must pass through bearings, shafts, gear cases, machine structures, mounts, and panelling before any noise can be detected. This type of path varies in specifics but generally holds for […]
Cameron Reagor

Powder metal gears can be carburized and quenched, with alloy and size dictating quenching process

Powder metallurgy has been around for hundreds of years, but has only been used for commercialized applications within the last 50 years. And like any new technology or process, PM was billed as the greatest innovation since sliced bread for manufacturers—especially gear makers. Today, its promoters have joined the “Green Revolution” bandwagon, primarily because of […]
Jack Titus

Q&A with Stefan Scherbarth

Manager—Automotive Application Development Center
Sandvik Coromant

I’ve heard a great deal of buzz about InvoMilling™. How did the idea come about? I was visiting a big machine tool maker in Germany, and we were having a deep discussion about gear milling with the technicians and the president of the company. If you look back at our (Sandvik’s) history, we’ve always been […]
Gear Solutions Magazine

NEWS

PRODUCT SHOWCASE: Sumitomo’s GND Grooving Toolholders Reduce Vibration

New GND Grooving Tool Holders from Sumitomo Electric Carbide, Inc. are engineered to reduced chatter and eliminate vibration. Featuring high rigidity bodies and single-piece special steel construction, the GND produces less chatter and eliminates vibration. GND tool holders also deliver steady performance for turning, profiling, facing and cut-off applications. Due to precision sintering technology, the […]
December 11, 2013

PRODUCT SHOWCASE: Gleason Corporation Presents 300GMS Gear Inspection Systems

Gleason Corporation has introduced the latest addition to the highly-successful GMS line, the 300GMS Analytical Gear Inspection System. The 300GMS enables faster complete inspection of automotive, aerospace, and other smaller gears, as well as gear cutting tools and non-gear parts. The latest addition to the GMS Series (with models available for gears up to 3,000 […]
December 10, 2013

PRODUCT SHOWCASE: Nexen Expands Line of High-Torque Servo Motor Brakes

Nexen Group, Inc. has launched an expansion of their Eclipse® line to offer more than 140 variations of spring-engaged, air-released servo motor brakes for a wider range of servo motors. Eclipse brakes offer four times the torque of internal servo motor brakes, and offer at least 20-50% more torque than competitive brakes, providing greatly enhanced […]
December 10, 2013

PRODUCT SHOWCASE: Walter Introduces New Product Code Online Search Tool

With the launch of its new website, Walter has provided a new virtual tool titled Product Code Search, an online search function for Walter tools which uses the name or order number of the tools as the search criteria. Users planning machining tasks can call up all of the available tool drawings and 3D models […]
December 10, 2013

PRODUCT SHOWCASE: Geometric Launches CAMWorks 2014

Geometric has launched the 2014 version of its intuitive solids-based CNC programming solution, CAMWorks. With the addition of true G-code simulation, CAMWorks is a complete CAD/CAM solution, fully-integrated end-to-end from the initial part design to creating a CNC program to full machine simulation. It reduces data redundancy and saves shop floor time. Along with support […]
December 10, 2013

PRODUCT SHOWCASE: Gleason Presents Phoenix 280G Bevel Gear Grinding Machine

The new Phoenix 280G Bevel Gear Grinding Machine establishes a new benchmark for bevel gear grinding for gears up to 280mm in diameter with a design that’s reliable, highly-productive, and easy to operate and maintain. There are no rails, wires, or pipes in the work chamber to collect SWARF, keeping the chamber clean for low […]
December 10, 2013

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