Topics & News Release

Toyo Advanced Technologies Co., Ltd. (head office: Minami-ku, Hiroshima, Japan; President: Yasuto Tatsuta) will be exhibiting its latest space-saving, high-performance machines at the 24th Japan International Machine Tool Fair, to be held at Tokyo Big Sight from Oct. 30 to Nov. 4, 2008. Toyo's theme for this exhibition is "Open the Grinding Future, Open the Honing Future." In addition to the newly developed T-32N-C, high-speed CNC honing cell and T-180C, vertical grinding machine for injection nozzle, some other products will be exhibited, including a new type of high-frequency wheel head, which can be run at a wide range of rpm.

• The newly developed T-32N-C is a compact 1.6m wide honing machine which helps shorten production lines. A new design using twin servomotors for vertical driving of the work spindle enables a high stroke speed of 60 m/min, resulting in a stroke speed twice faster than that of previous machines. As a result, the cell has a production capacity as good as or better than a dual-spindle honing machine, even though it only has one spindle. In addition, the cell makes stable, high-precision machining by introducing a highly rigid gate structure and TFCS-II (Toyo Force Control System II).

  The exhibited machine has single-spindle specifications, but a variety of additional options are also available, including dual-spindle specifications for further improvement of production, ATC (auto tool changer), APC (auto pallet changer), and transfer equipment. These options deal with a transfer line linking multiple cell machines, or varying-type/varying-quantity production. Toyo will begin taking orders for this machine at the Japan International Machine Tool Fair.

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  T-32N-C, high-speed CNC honing cell

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  T-180C, vertical grinding machine for injection nozzle

• T-180C is a vertical grinding machine developed for machining small parts, such as fuel injection nozzles, which require high precision grinding on seat faces. In addition to inner and outer diameter faces and end faces, this unit is capable of inclined grinding to suit the angle of the seat face. Even though the machine is equipped with a work transfer robot, the dimensions are as compact as 1,200 mm (width) x 1,660 mm (height), so it saves space and has excellent handling performance.

  A rotation precision of 0.1 μm or less is achieved by introducing a newly developed dynamic pressure bearing on the work spindle. This unit realizes high-precision, high-efficiency grinding through innovations including development of a new 180,000rpm high-frequency wheel head with a built-in AE (acoustic emission) sensor and introduction of linear motors and linear scales for X-axis and Z-axis. In the case of seat face grinding, any angle can be set through simultaneous axis control of X and Z, and this dramatically reduces set-up time for high-diversity, low-volume production. For mass production, the machine enables grinding with higher precision and efficiency by inclining X-axis to match the angle of the seat face.

  The same model was exhibited at IMTS 2008, held in Chicago in September, 2008, and numerous inquiries have already been received. In Japan, we will begin taking orders at the Japan International Machine Tool Fair.

In terms of components, we will be exhibiting three types of high-frequency wheel heads which consume less air. In particular, HFD06W-50 (8 kW output) can be used in wide range from 30,000 to 60,000 rpm, thereby enabling production with a single wheel head, even with a machine used for high-diversity, low-volume production.

At the exhibition hall, Toyo display will not only showcase machines and components, but also provide information on our vertical internal grinding machine series, which have increased the model lineup. The exhibit will provide an overview of our product line, ranging from compact T-180C to ultra-large T-186-2T. We also plan to disclose information on T-183C-2S machine with large turret table, which is currently under development.