High-performance plastic gears are increasingly replacing metal gears in several applications due to the many advantages they exhibit. The main ones are lower weight, no need for lubrication, cheaper mass production, significantly better noise, vibration and harshness (NVH) behavior and chemical/corrosion resistance. Most plastic gears are produced by injection molding, which enables great design flexibility, e.g., joining several machine elements into one molded part, while gear geometry modifications like enlarged root rounding or altered profile shapes are also possible (Ref. 1).
This paper is divided into two parts. The first part is a general digression on the pressure angle on cylindrical gears. The pressure angle is a variable that plays an important role in defining the geometry of gears and hobs, yet it is not widely discussed. This introduction serves as a prerequisite for the second part of the paper. The second part will show an application case of choosing the most suitable hob to cut a given gear. In this selection process, particular attention will be paid to the pressure angle of the hob for cutting with modified rolling, i.e., with a reduced pressure angle compared to that of the gear.
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This study aims to investigate the effect of this identified type of shot peening on the micropitting resistance of the gear tooth flanks and the macropitting resistance and to compare the experimental results with the calculation results based on standard methods.
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In this paper, ultrasonic fatigue testing results for “core hardened” AMS 6308 gear steel are presented. AMS 6308 is a gear and bearing steel with high tempering resistance and high hot hardness case targeted to high temperature applications
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Various in-situ methods can track realtime heat treatment response in bulk materials. This can aid material engineers in designing the most effective heat treatment procedures and processing methods. In-situ methods such as thermogravimetry (TG), differential thermal analysis (DTA), and dilatometry, offer capabilities to examine heat treatment behavior in real time, giving insight into the thermochemical mechanisms and the thermal behavior of steel.
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The way to increase production, especially with the largest gears, is to decrease nonproductive time with improved strategies.
Complete inspection of gear surface finishes at the submicron level became a reality with the introduction of Gleason’s 300GMS nano, in 2022. The new system ushered in an exciting new era in gear inspection. For the first time, producers of EV transmission gears, and gears for other applications requiring very tight tolerances and low noise requirements, could quickly inspect surface finishes and perform extremely reliable noise analysis at submicron levels—benefits that were almost impossible to achieve just a few years ago.
Gas carburizing has been around for a long time. One could argue that gas carburizing is the most common heat treating process. Heat treaters performing gas carburizing are often characterized by a dirty environment, hazy surroundings, and that “smell.” While the product quality may be acceptable, gas carburized parts do come with some challenges, like excessive intergranular oxidation (IGO) or intergranular attack (IGA), which is often ground off. Low-pressure carburizing (LPC) has proven to be a much cleaner and very capable alternative process. Most furnace companies have combined LPC with high pressure gas quenching, which moved carburizing from the dark back room to a relatively “clean room” environment. However, there is still a strong need for oil quenching, which is the common feature of the long used standard integral-quench (IQ) furnace.
From countless conversations with folks running gear operations, we know you're probably focused on..."
Injection molding bridges prototyping and full-scale production with its unmatched scalability and precision. By integrating CT technology, manufacturers gain clear insights into mold accuracy and material behavior—accelerating the path from design to high-volume, defect-free plastic parts.
Whether it’s gears for industrial or humanoid robots, Gleason has you covered:
100PS Power Skiving and Hobbing Machine and Phoenix® 100C Bevel Gear Cutting Machine provide excellent productivity and flexibility to cut your strain wave and planetary gears, as well as bevel and hypoid gear sets in unsurpassed quality. Both come with or without integrated automation and complete tooling systems. Measure the results on the 175GMS nano Metrology System with various analysis capabilities.
Is your grinding or finishing process optimized for maximum efficiency? The Weiler Process Solutions (WPS) evaluation helps gear manufacturers to enhance productivity, reduce costs, and improve safety. Our expert team will assess your operation and recommend tailored solutions to optimize performance. Sign up for a free evaluation today, and we’ll contact you within 48 hours to discuss how we can help—potentially visiting your site for a hands-on assessment.
Discover how machine learning minimizes roughness variations in profile grinding, enhancing the performance and durability of wind power gearboxes. The latest research by KAPP NILES demonstrates an optimized dressing process that improves surface quality on tooth flanks after profile grinding for next-generation wind turbines.
Efficiency and process reliability are critical in modern manufacturing—and this is exactly where the EMAG VST 50 excels. A standout feature: the fully automated tool change. Thanks to an integrated robot, the tool change takes less than 90 seconds—all while production continues uninterrupted! The tool magazine ensures a smooth process: it swivels outward, the robot swiftly and precisely replacing the tool.
Star SU, the marketing, sales, and service affiliate of Star Cutter Company, has announced the hiring of Scott Lukomski as sales director for cutting tools. Lukomski will report to Star SU president, Andreas Blind.
Fanuc America displayed its latest industrial and collaborative robotic innovations at Automate 2025.
Sep 15, 2025 - Sep 17, 2025
The Center for Automotive Research (CAR) MBS leads the industry in providing a context for auto industry stakeholders to discuss critical issues and emerging trends while fostering new industry relationships in daily networking sessions. The CAR Management Briefing Seminars take place at Michigan Central Station in Detroit.
Sep 22, 2025 - Sep 26, 2025
Sep 10, 2025 - Sep 12, 2025
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