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There is an increasing need for high-precision gear machining to meet customer demand for low-noise and low-vibration planetary gear systems. Mitsubishi Heavy Industries, Ltd. (MHI) has been developing high-precision gear-cutting technologies for use before heat treatment in the production of ring (internal) gears, one of the components of planetary gear systems. However, high-precision high-efficiency gear grinding is also essential after heat treatment to eliminate distortion and improve gear accuracy. In this paper, we report on the development of the Mitsubishi ZI20A grinding machine, the world's first internal gear grinder for use in volume production. Planetary gear systems are widely used in automatic transmissions of vehicles and power transfer systems for hybrid cars because of their compactness and high reduction ratio. There has been an increasing demand for higher precision internal gears as well as for external gears in transmissions to suppress noise and vibration. To meet this demand, gear manufacturers are seeking high-precision high-efficiency techniques for grinding internal gears after heat treatment. Figure 1 shows the manufacturing flow for the volume production of ring (internal) gears. Traditionally, ring gears have often been built into gear systems after heat treatment without being subjected to the finishing process. However, controlling the precision of gears after heat treatment...
In recent years the demands for precision machining of gears in automobile transmissions, for low noise and vibrations, has been ever increasing. Historically, conventional finish machining of gears was a pre-heat treatment operation typically by shaving. However, the requirement for higher precision forced a shift toward a post heat treatment operation using a generating process, which eliminates thermal distortion, thus enabling high quality and precision. The Mitsubishi ZE15A gear-grinding machine was duly developed for the high production line applications and launched into a domestic market typically dominated by European machines. (3) Ease of use for the user achieved via interactive dialog functions and full CNC control of all axes. This paper describes the principle of grinding and control for the ZE15A before presenting some machining examples.
Rhode Island College Anchor Notes The Official Newsletter of Rhode Island College Intercollegiate Athletics www.ric.edu/athletics Vol. VI No. 2 Providence, Rhode Island Fall Review/Winter Preview December, 2004 Michael Morrison Joins RIC Staff Inside this edition Tabbed to head up athletic development Morrison joins RIC staff . . . . . . . . . . . . . . . . . . . . . Page 1 Soccer stadium project update . . . . . . . . . . . . . . . . Page 1 2004 fall season summary . . . . . . . . . . . . . . . . . . . Page 2 Upcoming home winter sports dates . . . . . . . . . . Page 3 Dates to remember . . . . . . . . . . . . . . . . . . . . . . . . . Page 3 Vin Cullen ‘55 honored. . . . . . . . . . . . . . . . . . . . . . Page 3 75th Anniversary events taking place . . . . . . . . . . Page 4 Anchor Club membership . . . . . . . . . . . . . . . . . . . Page 4 Rh ode Island College has n am ed Michael Morrison the Assistant Athletic Director for Athletic Development. He is responsible for the day-to-day management of the department’s development init iativ es in clud ing fun draisin g and marketing activities. “I am very excited about joining the Rh ode Is land College Athletic Michael Morrison Department,” Morrison says. “I am looking forward to working with RIC Athletic Dir ector Don Tencher and Anchor Club Executive Director Art Pontarelli and hope to continue the success that they’ve had over the past five years.” RIC Athletic Direct or Don Tencher says, “W are e extremely glad to have Mike Morrison joining our athletic family. Mike brings successful experience, ener gy, and a strong work ethic to the fundraising side of our house. I am confident that Mike’s efforts will result in positive results that will benefit the athletic program, our student-athletes and our alumni.”
Insider’s Guide to Finding Flights to Bonaire from North America 2014 The choices for U.S. and Canadian travelers flying to Bonaire continue to change. Many of these airline alternatives require knowledge of schedules, days of operation, gateway cities and routing to successfully navigate and find the most viable choice for your travel plans. There is no one ‘right’ or ‘best’ way to get here – but the following examination of the marketplace will help you find the routing (and fare) that best meets your needs. Supply and demand along with the realities of the new airline marketplace continue to show that buying airfare direct from the carriers themselves will afford you the best fares in most cases. This White Paper will outline the variety of alternatives, contrast advantages and disadvantages, and offer some suggestions on researching and purchasing tickets to Bonaire. Updated Dec 2013 Insider's Guide to Finding Flights Page 1 Nonstop Options from the U.S. to Bonaire (BON) 1. United Airlines – Nonstop jet service from Houston and Newark to Bonaire A. United nonstop From Houston to Bonaire (IAH to BON) Starting Jan 3 – Year Round – Friday afternoon departure from Houston (arrives Bonaire early evening) with Saturday morning return from Bonaire back to Houston. From February 15 to May 4 and June 7 to August 17– an identical schedule will be offered on Saturday afternoon (arriving Bonaire early evening) with a Sunday morning return flight from Bonaire to Houston. B. United nonstop From Newark to Bonaire (EWR to BON) January 4 to August 16 - Saturday morning departure from Newark (arriving Bonaire early afternoon) with Saturday afternoon return to Newark . This schedule will resume again in late fall 2014 (pending announced schedule). From January 5 to May 4 – Sunday morning departure from Newark (arrives Bonaire early afternoon) with Sunday afternoon return to Newark. An additional 3rd flight for peak March travel weeks is also being offered from Newark!
[314 Pages Report] Refurbished Medical Equipments & Devices Market Report analyzes the market potential for devices used for refurbishing for different medical usages.
[226 Slides Report] Electronic Chemicals & Materials Market report categorizes the Global market by Types (Silicon Wafer, PCB Laminate, Photoresist, and Specialty Gases), Application (Semiconductor & IC, PCB), Forms (Solid, Liquid, and Gaseous) & Geography
Glass Fiber & Glass Fiber Reinforced Plastic (GFRP) Composites Market report categorizes the Global market by Raw Material, Manufacturing Process, Application (Transportation, Construction, Electrical & Electronics) & Geography
Soy Protein Ingredients Market report categorizes the global market by Types (Isolates, Concentrates and Others), Applications and Geography
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