Topics & News Release

Toyo Advanced Technologies Co., Ltd. (Head office: Hiroshima, Japan; President: Yasuto Tatsuta) has developed TVG-60C, first introduction of new TVG series vertical grinding machines, and T-11LB, newest horizontal grinding machine. They will be exhibited at ‘25th Japan International Machine Tool Fair’ held at Tokyo Big Sight from October 28, 2010 and commenced practical sales marketing.

TVG is a new series of vertical grinding machines renewed its construction from previous models to enable high-precision and efficient processing with superior cost performance. It is scheduled to line-up from small to large sizes and TVG-60C-2S has been developed for works up to 600mm OD as its first introduction.

• The new structure that cross-feed axis (X-axis) is separated from table axis (Z-axis) and the workspindle is placed on X-axis is employed. This arrangement reduced distortion of Z-axis by machining load and realizes high-precision grinding of straightness 1μm/300mm. Furthermore minimized heat-deformation of column by arranging coolant drain channel surrounding base enables stable size accuracy. Combining with optional touch probe, the stable grinding of size accuracy ±1μm is realized.

  TAs compositions of machine, end face clamping turret unit, which has high rigidity, is employed. Two wheelheads, each exclusive for IG or OG, are mounted on turret unit to process multiple faces, such as ID, OD and end face, etc., in single chucking. Further, automatic tool changer (ATC), equipped as standard, and automatic pallet changer, option, enable unmanned operation for many hours.

  As machine control, in addition to standard TOYOMATIC-4000, which is originally developed and highly reputed for CNC control of Toyo internal grinders and vertical grinders, FANUC control is prepared as an option to be chosen by customer needs.

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  Vertical Multi-Face Grinding Machine [TVG-60C-2S]

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  Centerless Internal Grinding Machine [T-11LB88]

• T-11LB88 is centerless internal grinding machine suited for works which have circular OD, such as bearing rings, and is succeeding best-selling T-11LA88. The sizes and kinds of works to be ground are expanded to be applied easily for variety of works with small-lot production maintaining machine size equivalent with the previous model. Moreover the cycle time reduction is enabled by enhanced machine overall rigidity, etc.

  The machine remains compact, whose width is 1700mm, equivalent to the previous model, expanding the max. work OD to 150mm from 62mm. Further workspindle swivel option, max. 30-deg., is newly prepared for high-precision grinding of tapered faces also as straight bores, to be applied to various kinds of works.

  The high-rigidity honeycomb-structure base is newly employed to enhance machine overall rigidity together with employment of high-rigidity linear guides and expansion of table guides span. These enable heavier load grinding reducing cycle time by 20% and improve productivity significantly.