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Archives December 2014

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December 2014

FEATURES

Company Profile: Carmona Gear Cutting

With over 80 years of combined experience in the gear-cutting industry, father and son Frank and Robert Carmona and the people at Carmona Gear are here to serve those in need of their gear knowhow and expertise.

There’s something to be said about a small company with big aspirations. It’s ambitious, hard working, and dedicated to catering to the needs of its customer base. Carmona Gear Cutting in Rockford, Illinois, is that small company, and it has been serving businesses in need of gear-cutting expertise since 1985. Founded by Frank Carmona nearly […]
Anna Claire Howard

Why Use a Wire EDM Worm Wheel in a Plastic Injection Molded Application

Using a wire EDM injection mold cavity for a work wheel is an ideal option when designing plastic gears. This method will offer more versatility and ultimately reduce costs and time put toward the finished product.

Crossed-axis helical gears (non-enveloping) is a method of transferring motion when using non-parallel axis shafts. These shafts are typically at a 90-degree angle. This method uses a worm to drive a worm wheel. Figure 1 shows an example of an injection molded plastic worm wheel. Plastic injection molded gear cavities are typically produced using an […]
Glenn Ellis

An Approach to Find Optimal Topological Modification to Duplicate Tooth Flank Form of the Existing Gear

The developed method of cutting bevel gears on universal five-axis milling machines has replaced the conventional cutting process in many areas. By this method, it is possible incorporate a flank form of a bevel gear given by grid points.

Recently, the cutting of bevel gears on universal five-axis milling machines has been widely accepted as a promising solution to replace the conventional cutting process. The process is highly flexible and does not require special tools. Thus, it is particularly suitable for small batches, prototypes, and repairs in-use having unacceptably high lead times. In order […]
Inho Bae, Ph.D., Virgilio Schirru

Non-Destructive Electromagnetic Structure Testing

This is a description of a non-destructive, multi-frequency electromagnetic structure test method to verify properties of heat-treated gears.

Steel structures depend on alloy and heat treatment for durability and strength. Ferritic and martensitic structures behave ferromagnetically, and austenitic structures behave nonmagnetically. Therefore, steel alloys, at certain heat treatments, will have certain magnetic properties. The characterization of magnetic properties, including its reaction to magnetic fields, is made by its permeability. Behavior of ferromagnetic material […]
Gunthër Dinold

DEPARTMENTS

The Casting Process for Gears, Part III

Part three in Meehanite Metal’s discussion of the casting process for gears

THE FORMATION OF THE GRAPHITE Control of the physical properties of a cast iron is normally aimed at exercising some degree of control of the time at which graphite is deposited from the melt, and, broadly speaking, this is done by controlling the composition or more particularly, the carbon equivalent of the iron. Graphite deposited […]
Meehanite Metal Corp.

Preliminary Results of Testing of Low-Tooth-Count Bevel Gears of a Novel Design, Part II

Analytical description of the tooth flanks of the gear and the pinion in geometrically accurate bevel gearing.

In the proposed approach, the tooth flanks of the gear, G, and the pinion, P, are generated by means of a desirable line of contact, LCdes. This means that the line of contact between the tooth flanks G and P is designed before the tooth flanks themselves are designed. Use of such an approach enables […]
Dr. Stephen P. Radzevich Ph.D., Dr. (Eng) Sci.

Why heat-treating equipment suppliers are unclear as to what the future may hold

It was early October while I was listening to the Paul W. Smith morning radio show on WJR when I couldn’t believe what I heard. During an interview at the Paris Auto Show, Fiat CEO Sergio Marchionne made what appeared to be an off-the-cuff announcement that the Jeep Wrangler would have to be relocated from […]
Jack Titus

Trend Talks: Anna Claire Conrad

Here, we will explore where the gear manufacturing industry has been this past year, where it is now, and where it’s going into 2015 with the help of AGMA President Joe Franklin.

It’s no surprise that 2013 wasn’t an economically blockbuster year for most industries across the board, and the gear manufacturing industry was not immune to that. However, throughout this past year, we’ve seen things turn around for gear manufacturers. 2014 brought with it along a lot of positive changes, including an increase in research and […]
Anna Claire Howard

Q&A with Lewis Weiss

CEO, founder and president of All Metals & Forge Group and Manufacturing Talk Radio

Since this weekly live Internet talk show launched in 2013, you and Tim Grady have discussed breaking news, business trends and economic forecasts in the manufacturing industry for manufacturers of all sizes across America. Why did you two start this online radio channel? The idea popped into my head at 2:30 in the morning on […]
Gear Solutions Magazine

NEWS

PRODUCT SHOWCASE: Koepfer America Introduces CLC Horizontal Gear Hobbing Machines

Koepfer America, L.L.C., introduces the CLC “H” series of heavy duty horizontal gear hobbing machines to the North American gear manufacturing market. These machines offer a competitive and fully customizable solution for high-precision, CNC horizontal gear hobbing. The CLC 260-H is rated at 7.874” (200 mm) diameter at 4 DP (mn 6.0). Larger work pieces […]
December 17, 2014

Mazak Launches New Global Websites for Enhanced User Experience

Japan-based Yamazaki Mazak Corporation and its global subsidiaries — leaders in the manufacture of highly productive machine tools, CNC technology and automation solutions — recently launched a new global online initiative comprised of fully responsive, multi-language websites to effectively support its metalworking customers around the world. These new websites are easily accessible via a unified […]
October 16, 2014

SPI and Tooling U-SME Launch PlasticsU to Provide Online Machinery Training for Production Workers

SPI: The Plastics Industry Trade Association and Tooling U-SME, a leader in providing workforce development and training to the manufacturing industry, announced Monday the launch of a new online training program aimed at closing the manufacturing skills gap in the plastics industry. Administered by Tooling U-SME, PlasticsU will serve the plastics industry by providing formal […]
October 16, 2014

PRODUCT SHOWCASE: Quantum leap in the measurement of hobs

Gear cutting is a challenging task. Only perfectly made and re-sharpened tools can guarantee correct workpieces, short setup times and thus low downtimes of the expensive gear cutting machines. Full documentation and logging are a fundamental requirement. The measurement and inspection of hobs has remained the domain of highly complex and extremely expensive measuring systems […]
October 16, 2014

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