This article introduces the process of polish grinding of gears. Improved surface quality increases the overall efficiency of gearboxes, resulting in reduced friction and torque loss, higher power density, and noise-optimized gears (lower NVH); all these factors are highly relevant, especially for electric drives. When Reishauer developed polish grinding in 2012, the process aimed to improve the efficiency of ICE engine transmissions, and the set goals were easy to achieve. Today, in 2023, the situation is dramatically different. While an ICE engine operates at around 3,000 rpm and supplies acoustic masking of the gear noise, EV drivetrains feature up to 20,000 rpm and offer no such masking.

A deep dive into the world of gear dynamics and gear noise has led many a mechanical engineer to Columbus, OH in search of the methods by which gear noise is measured and predicted as well as the techniques employed in gear noise and vibration reduction. Over the past 40+ years, about 2,550 engineers and technicians from 385+ companies have attended the Gear Dynamics and Gear Noise Short Course at The Ohio State University.

National STEM Day, celebrated on November 8th this year, provided a platform for Gear Technology to engage in a conversation with four remarkable women shaping the manufacturing industry: Ruthie Johnston, CEO and Owner of Croix Gear; Robin Olson, Senior Manager, Applications Engineering—Engineered Gear, Regal Rexnord; Michelle Maddox, Sales and Business Development Manager, B&R Machine and Gear Corp.; and Claudia Hambleton, Office Manager and Corporate Treasurer, German Machine Tools of America (GMTA). Each of these women, driven by a shared passion for fostering the next generation of female leaders, revealed their unique journeys and perspectives in this male-dominated field.

Gleason's Coniflex^® Pro Design and Manufacturing System for producing stronger, quieter, and more reliable e-drive differential gears in high volumes, for automotive, truck, bus and off-highway transmissions. It‘s the differential difference!

The roots of heat-treating run deep within ASM (American Society for Materials) International, as its society was founded in Detroit in 1913 as The Steel Treaters Club. The heat-treating constituency of ASM created the Heat Treating Society (HTS) to provide focused leadership, communications, and service development to its network of worldwide membership of captive and commercial heat treaters, equipment manufacturers, researchers, governments, and technicians. To discuss Heat Treat 2023, the 32nd annual HTS Conference and Exhibition, Gear
Technology took a moment to catch up with conference chair Andrew Banka, vice president of Airflow Sciences Corporation. Heat Treat 2023 is colocated with IMAT and Motion + Power Technology Expo in Detroit, October 17–19.

The EV to-do list grows daily. Once the engineer has settled in on solving noise, vibration, and harshness (NVH) challenges, they pivot toward energy efficiency. They consider the vehicle’s weight, the tooling needed to manufacture the gears, the skiving needed to make the surface finishes as smooth as possible.

AGMA’s Motion + Power Technology (MPT) Expo is a biennial trade show—running this year from October 17–19 at Huntington Place in Detroit—designed to serve the gear and power transmission industry, representing the full spectrum of professionals involved in the life of a gear, gearbox, or other power transmission device—from design to manufacturing, testing, heat treating, and more. You will find equipment and materials suppliers to make gears; gear and gear drive manufacturers; and every imaginable industry-adjacent supplier from software to tooling, lubrication to bearings, and much more.

A range of gear manufacturing applications such as planetary carriers and gear wheels with strict tolerances demand comprehensive, reliable clamping solutions. Whether the objective is to reduce vibrations or ensure concentricity of only a few microns, the clamping must meet challenging requirements.

The manufacturing version of Indiana Jones is much more interested in lithium, cobalt, and nickel than arks, grails or “Dials of Destiny.” So much so that the current administration is doing its part to keep up with China in the dramatic supply chain cold war taking place across the globe. We’ve all read and reread the headlines, electrification is imminent for our carbon-neutral future—the path toward electrification, however, is quite complicated.

Heat Treat 2023 is the Heat Treating Society’s 32nd conference and expo for heat treating professionals featuring three days of face-to-face networking opportunities with approximately 200 heat treat exhibitors/companies. All the top heat-treating companies will offer the latest research and industry insights during more than 100 technical programs. This year’s show includes a VIP-guided industry tour, as well as student/emerging professionals initiatives, including free college student registration, Fluxtrol Student Research Competition, and the ASM Heat Treating Society Strong Bar Student Competition. Heat Treat 2023 is colocated with Motion + Power Technology Expo 2023 with access to additional exhibitors. The event takes place October 17–19, 2023 at Huntington Place in Detroit.