Chevalier’s FSG-DC Series Fixed-beam Double Column CNC Grinding

Easy Set Up, Programming and Operation

CHEVALIER’s FSG-DC Series stands out as the number one choice for fixed-beam, double column grinders for a variety of important reasons, including: an easy-to-use interface,full CNC user-friendly control system, full workpiece capacity,rigidity and accuracy of the dual column design—all features that offer impressive performance. They’re the standards required by the automobile, die andmold, transmission component, electronics, aerospace, and related component machining industries in order to meet current and future market needs and pave the way for factory automation.

The mechanical design of the elevated guideways and spindle seat, adapted with highly rigid linear guideways, high-precision ballscrews and a pneumatic counterweight device, provides superb rigidity and heavy duty grinding capability.

This series of easy-to-operate grinding machines includes our exclusive iSurface PC-based control, standard with FSG-60 series.* The fully automatic control delivers constant surface speed in dressing and grinding cycles; and loading force function for a higher level of precision, flexibility and functionality.

Construction design

Fixed-beam column

The rectangular design of the beam and wide span column is optimized by finite element analysis (FEM). The wide-span structure, with guideways, is designed for maximum rigidity.

The elevating movement of the spindle seat is on the highly rigid linear guideways with the pneumatic counterweight, which reduces friction and increases positioning accuracy and extends the life span of the ballscrews.

The elevating movement is directly driven by the servo motor, precision ballscrews and integrated with the pneumatic counterweight to enhance the agility and accuracy of the movement.

Spindle design

The front end of the spindle is supported by four P4-grade, angular-contact, precision ball bearings. The rear end is supported by two P4-grade, angular-contact precision ball bearings to optimize the span arrangement for maximum rigidity.

The outer diameter of the spindle sleeve is designed with a cooling circulation groove cooperated with oil-cooling device, and stable and rigid spindle seat can achieve heavy-duty cutting loads.

Horizontal grinding head

The elevating movement is driven by precision ballscrews that are integrated with the gear reducer and pneumatic counterweight to enhance agility. The high-resolution, optional linear scales can become a close-loop control for accurate positioning.

The spindle, Ø90 mm (Ø3.5") in diameter, uses six pieces of angular-contact ball bearings (four pieces in front, two pieces in rear). Integrated with 18.5 kW (25 HP) powerful spindle motor, it can implement heavy-duty grinding.

Sliding mechanism of the base and table

The guideways of the base are designed with big-angle, large-span, double-V-shaped rails, on which Turcite-B is the sliding medium to absorb the vertical load. The table is hydraulically driven to make the cutting movement stable and smooth.