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CHF 840 THE VERSATILITY OF A NEW GENERATION

FIVE CNC-CONTROLLED AXES FOR THE FLEXIBLE AND PRECISE MACHINING OF TOOTH SIDES

Ingeniously simple operation with newly developed multifunction handwheel. And a groundbreaking machine concept for efficient use with wood, aluminum and plastic and a wide range of metal applications.

The result: the perfect combination of precision and productivity with maximum flexibility.

For the universal side machining of carbide-tipped circular saw blades with a diameter of 80 mm to 84 mm.

THE MACHINE CONCEPT

The CHF series is ideally equipped for sharpening carbide-tipped circular saw blades, offering versatility which leaves nothing to be desired.

  • Five CNC-controlled axes for beginning-to-end hydraulics-free complete machining of all commonly used angles in just one cycle – even for saws with group toothing
  • Oscillation grinding as standard – for high material removal rates in just one cycle, in line with the requirements for production and when replacing teeth during servicing
  • Optimal movement coordination for short grinding times and reduced non-productive times, adjustable feed cam for ideal tooth positioning
  • Proven VOLLMER drive technology for dynamic and reliable machining
  • Five-axis kinematics for maximum flexibility
  • Automatic central lubrication included in the basic equipment for reduced maintenance costs

THE APPLICATION

Side machining of saws for the saw mill industry, woodworking, plastics processing, aluminum processing and metalworking. Its high level of flexibility and superior grinding efficiency make the CHF series the first choice for many applications.

  • Automatic setting of all commonly used angles – including the hook angle – and automatic detection of the tooth pitch
  • Optional: Tooth pitch up to 180 mm thanks to a second feed pawl for greater flexibility, especially in a saw mill
  • Machining of convex tooth sides is also possible
  • Saw change possible without adjusting the mounting carriage – no need to set it up again
  • Optionally available with an even more powerful grinding motor and variable cutting speed for maximum grinding efficiency and optimized machining parameters for the process

THE OPERATING CONCEPT

The new multifunction handwheel makes work significantly easier and faster. The axes are selected and moved by only one module to avoid the possibility of incorrect operation. The handwheel is also used as a potentiometer in order to carry out speed adjustments in automatic mode.

  • Different grinding speeds can be entered depending on requirements: Optimized machining time or maximum surface quality
  • No need for manual adjustment of radial and tangential clearance angles, which means that operating errors are avoided. Values can be entered as angles or absolute values
  • Fully automated single-sided machining also possible (e.g. for conical prescoring saws)
  • No tooth pitch input required thanks to the feed pawl sensor system
  • Programming of special geometries as standard with a flank offset in the multi-surface program

Machine for sharpening circular saws // VOLLMER CHF 840 and CHF 1300

CHF840
WORKPIECE DATA
CIRCULAR SAW BLADES
Circular saw blades with outside diameter 80 - 840 mm
Circular saw blades with bore diameter 10 - 300 mm
Circular saw blades with blade thickness ≤ 8 mm
TOOTH GEOMETRY
Grinding length on the side angles < 20 mm
Tangential clearance angle 0° - +8°
Radial clearance angle -20° - +6°
Hook angle -10° - +30°
Tooth pitch 6 - 100 mm
WORKPIECE HOLDING FIXTURE
Workpiece weight < 30 kg
INTERFACES
Electrical connected load 6,5 kVA
INTERNAL COOLANT UNIT
Coolant tank 150 l
CHF 840
CHF 840
Brochure

Your contact

VOLLMER OF AMERICA CORP.
Address 105 Broadway Avenue // Carnegie, PA 15106