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Archives May 2013

Archives

May 2013

FEATURES

Scot Forge

In today’s “need it yesterday” world, Scot Forge produces parts better and faster—with a smile.

It only takes two minutes — two minutes from the moment the plant tour begins — to realize there is something very different about Scot Forge, the 120-year-old forging company based in Spring Grove, IL, about 40 miles northwest of downtown Chicago. Every employee greets visitors with a smile. Every question posed is answered in […]
Tim Byrd

Casting, Forming, and Forging

Gear manufacturers depend on machinery available, design specifications or requirements, cost of production, and type of material from which the gear is to be made.

There are many methods for manufacturing gears, including: Metal removal processes (hobbing, shaping, milling, shaving, grinding, honing, and lapping) Various casting processes for both production of gear blanks and near-net shape gears Stamping and fine blanking Cold drawing and extrusion Powder metallurgy (P/M) processing Injection molding Gear rolling Forging for production of gear blanks and […]
Joe Davis

Development of Novel CBN Grade for Electroplated Finish Grinding of Hardened Steel Gears

The unique requirements of an electroplatable superabrasive CBN grit used in profile grinding of hardened steel gears, as well as the attributes and grinding behavior of a new CBN developed specifically for this application, are discussed.

The grinding processes used in finish grinding of hardened gears can be classified as generating grinding and profile grinding, depending on how the profiles of gear teeth are finished. The grinding process can be continuous, where the gear profile is achieved progressively by grinding with a splined wheel, or discontinuous profile grinding, where a specific […]
Shuang Ji, Uppili Sridharan, Jim Fiecoat, Dr. Sridhar Kompella

A Field Case Study of ‘Whining’ Gear Noise in Diesel Engines

A description of one helical gear application in which an improvement was achieved through the elimination of profile modification.

This paper describes the work performed to reduce first order gear mesh vibration, which was the root cause of an excessive gear “whine.” It includes a discussion for introduction of an unmodified involute profile (except for a short tip relief to smooth the tooth entry and exit into the mesh), inspection charts, significance of a […]
Marshall Guerra, German Alonso Acosta, Sam Mleczko, Yefim Kotlyar

DEPARTMENTS

Powder Metal Gears, Part VIII

Reduce investment costs for a new gear factory by going the PM route.

Another finding demonstrated by Dr. Strehl’s manufacturing simulation was the reduced investment costs for a new gear factory when going the PM route. In that scenario, PM gears would be bought and heat treated, hard turned, power honed, and washed, saving floor space, heating, cleaning, and of course machinery and manning. For a 6-speed manual, […]
Anders Flodin

Cycloidal teeth must not only be accurately spaced and shaped; their wheel centers must be fixed with equal care

In 1900, Wilfred Lewis discussed gear tooth forms at an ASME meeting: “About 30 years ago, when I first began to study the subject, the only system of gearing that stood in much favor was the cycloidal. For some time thereafter, William Sellers and Co., with whom I was connected, continued to use cylindrical gearing […]
William P. Crosher

A discussion of the 3D heat-treatment process called Direct Metal Laser Sintering

Selling the Wheel, a book by Jeff Cox, tells the story of Max, a stone-age entrepreneur who creates the wheel and is looking to market his invention and endeavors to seek advice from several experienced sources. It’s such a new and unheard of method of moving that Max thinks the potential is unmatched in the […]
Jack Titus

Q&A with Dennis Richmond

Vice President, Reishauer Corporation

Reishauer has a range of gear grinding machines. What sort of capabilities do you offer? We have a family of smaller grinding machines with capacities up to 260 mm, all sharing a common platform and axial travel range but with different module and grinding speed capabilities. The RZ 60 model has a range of up […]
Gear Solutions Magazine

NEWS

Wenzel America Announces New Partnership with Liebherr Gear

Wenzel America proudly announces their new partnership with Liebherr Gear Technology, Inc., an international leader in the manufacture of gear cutting machinery and the supply of technically advanced products and services. Liebherr will exclusively represent the Wenzel GearTec product line in the United States and Canada. Liebherr Gear Technology, Inc. is based in Saline, Mich. […]
May 3, 2013

GMTA News

Below is a selection of GMTA news briefs. German Machine Tools of America, founded in 1991 as the U.S. subsidiary of Wera Werk in Wuppertal, Germany and based in Ann Arbor, Michigan, today represents various lines of German machine tools and metal fabricating equipment, including gear cutting and honing, surface grinding and deburring machines, wheelset […]
May 3, 2013

Delta Inspection Awarded Prestigious ISO 17025:2005 Designation

Delta Inspection, the newest company of the Delta Family of Companies, located in Livonia, Mich. is pleased to announce that it has been awarded the prestigious ISO 17025:2005 designation by the American Association of Laboratory Accreditation (A2LA). ISO/IEC 17025 was first issued in 1999 by the International Organization for Standardization (ISO) and the International Electrotechnical […]
May 3, 2013

MTB Official Representative of Sales and Service for Burri Gear Grinding

Machine Tool Builders (MTB), a remanufacturer and recontroller of gear-cutting and grinding equipment, has been appointed as official representative of sales and service for Burri Gear Grinding equipment in North America. Burri Machine Tools GmbH & Co.KG (Burri-Werkzeugmaschinen GmbH & Co. KG) is the world market leader in remanufacturing or upgrading Reishauer® gear grinding machines […]
May 3, 2013

PRODUCT SHOWCASE: Get a Grip on Precision with New OML Workholding Catalog

The new “Get a Grip on Precision” catalog from Lexair is a comprehensive guide to a unique line of productivity-boosting workholding devices from OML. The catalog includes the Genius precision 5-axis vise with 9000 lbf clamp force at the top of the jaws, the MC modular clamping system with patented self-locking CLAK parallels for tombstones […]
May 3, 2013

PRODUCT SHOWCASE: Oelheld U.S. Introduces AquaTec 5001

AquaTec 5001 is a high-performance synthetic metalworking fluid specifically designed for moderate work on cemented carbides. The oil-free AquaTec 5001 contains a highly effective combination of inhibitors that significantly reduces leaching of cobalt and nickel binders. AquaTec 5001 also provides excellent lubricity and cooling for extended grinding wheel life, and superior work piece finish. Grinding […]
May 3, 2013

PRODUCT SHOWCASE: Sumitomo Drive Technologies Launches New Mobile Website

Sumitomo Drive Technologies is excited to introduce the mobile optimized version of their global website, www.sumitomodrive.com, which launched in February of this year. The global website now features a mobile-friendly, responsive layout for tablet and smartphone use that streamlines mobile users’ search for industry, product, and contact information. The site's layout and content adjusts for […]
May 3, 2013

PRODUCT SHOWCASE: Workhorse Bolt-On Trunnion Tables Bring Forth Full Potential of 4-Axis Machining Centers

The TrunnionTable.com Stallion 920 and 923 tables allow users to exploit the rotary fourth-axis capability of horizontal and vertical machining centers, and deliver a low-cost path to higher productivity and improved accuracy. The bolt-on trunnions are work-ready right out of the box, with standard-sized models designed for the most popular models of Kurt vises, including […]
May 3, 2013

PRODUCT SHOWCASE: Technologically-Advanced Fluids Make CIMCOOL Products Global Leader for Industrial Applications

With products that boast results including four to five timeslonger sump life; up to 300% improved tool life; an increase in productivity; excellent rancidity control; greatly reduced concentrate usage; and operator-friendly use, CIMCOOL Fluid Technology offers some of the most technologically-advanced fluids for use in industrial operations. The company is a leading global supplier of […]
May 3, 2013

PRODUCT SHOWCASE: New Indexable Cutters from BIG Kaiser Optimize Productivity

BIG Kaiser Precision Tooling Inc. introduces the new R-Cutter (Pat. P) and BF-Cutter from BIG Daishowa. The R-Cutter is an ultra high feed front and back radius chamfering mill which features high rake angles that reduce cutting resistance and minimize burr generation. The radius chamfering mill is offered as a single-insert design and a four-insert […]
May 3, 2013

Gear Finishing School Features Multi-Layered Learning Environment

The sixth annual KAPP-NILES Rocky Mountain Gear Finishing School (RMGFS) will be held October 16, 17, and 18 in Boulder, Colo. The school is designed to benefit gear manufacturing engineers, machine operators, and production managers, as well as gear designers. The opening presentation, “Gear Basics,” provides a solid foundation including a section on gear nomenclature […]
May 3, 2013

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