Two-Axis Grinder Features Ballscrew Drive, Rigid Construction

Eastec 2019: Okamoto’s ACC-818NC is a full-function, two-axis simultaneous CNC form grinder ideal for surface, slot, step, form and contour grinding, now available with a ballscrew table drive enabling precise positioning.


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Okamoto’s ACC-818NC, a full-function, two-axis simultaneous CNC form grinder ideal for surface, slot, step, form and contour grinding, is now available with a ballscrew table drive enabling precise positioning. The machine can grind cylindrical components such as pins and punches and mold components such as core pins. In addition, the available indexing fixtures streamline grinding of punches and other components requiring two-axis simultaneous control.

Heavily ribbed Meehanite construction and full-contact, double-V ways promote true tracking and precise positioning. The rigid wheelhead assembly is said to ensure long-term accuracy and reliability even under demanding grinding conditions. A three-point diamond dresser includes one two-point angle dresser for form dressing and a one-point dresser for straight dressing. Table feed control boosts productivity by enabling simple setting of as many as five different stroke positions.

The grinder has a table working area (W × L) of 8" × 20" with a 265-lb load capacity. The 8" × 1" × 1.25" grinding wheel is driven by a 2-hp spindle.

User-friendly conversational programming is said to simplify setup and operation even for operators unfamiliar with CNCs. An RS232C port and PC card slot are standard. Some of the standard accessories include grinding wheel with adapter, spindle inverter, three-point table-mounted dresser, wheel guard with coolant nozzle and a table slash cover. Options include a fully enclosed splash guard, a coolant tank with a choice of filtration systems, an electromagnetic chuck, indexing devices and more.

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