Universal grinding machine BHC 63 / 4000 CNC


BHC 63 CNC is a fully CNC controlled grinding machine with control axes X (infeed of wheel head), Z (longitudinal feed of table), program-controlled of work head spindle revolution C.
The grinder has been designed primarily for numerically controlled grinding of a number of external cylindrical surfaces of different diameters and their contiguous front surfaces and radii, including automatic wheel dressing and wear compensation by means of the CNC system. However it can be used with special accessory for internal grinding.
On the machine can be effected longitudinal traverse grinding with a moving table, plunge-cut grinding with a stationary or oscillating table, grinding in the cycle consisting of sequence of plunge-cut grinding followed by longitudinal regrinding. In centres are possible grind cylindrical surfaces or slim taper surfaces within the range of tab le swivel. Sharper tapers can be grind by held in chuck. Shaped work piece can be ground with linear and circular interpolation.
Wheel head infeed and table travel are provided by means of servomotors and ball screws. The BHC 63 is the most stabil (heavy) grinding machine, can find its application primarily in the piece or the small-scale production for grinding the workpieces of weight up to 4.000 kg.(optionally 5.000 Kg - heavy duty)

 

Machine description

CNC systems
Siemens 802D sl / Siemens 840D sl / B&R

 

 

Basic parameters

Swing diameters:  630 mm / 850 mm / 1000 mm

Distance between centers: 2000 / 3000 / 4000 / 5000 and 6000 mm

Max. weight of workpieces between centres: 4000 kg (option 5000 kg)

Ball screws

Feed for X and Z axes is provided by high precision ball screws from reputable Czech manufacturers (KSK Kuřim), or from abroad (Spain, Shutton). All screws are made in precision accuracy IT 1 for axis X and IT 3 for axis Z. Screws are mounted in accurate cases using INA preloaded radial-axial bearings. Use of high quality ball screws ensures smooth and quiet running of the machine with the possibility of 1μm increment in both axes.

Technology cycles

  •  Longitudinal grinding
  • Plunge cut grinding
  • Multiple plunge cut grinding
  • Taper grinding (cone)
  • Convexity / conaxity grinding
  • Dressing
  • Ball grinding

Superfinish

For the machine is possible to order device for superfinish, where is possible to get Ra 0,05.

 

Pictures