CNC Grinder Adapts to Fit Many Grinding Applications
Studer favoritCNC is designed for grinding medium-sized workpieces in individual and serial production.
Posted: December 17, 2013
The slides are advanced by 40 mm diameter circulating ballscrews connected to a three-phase servo motor via torsion resistant, bellow-type couplings. This enables the axes to achieve high process speeds on one hand, while short auxiliary times also guarantee maximum precision with in-feed movements of 0.0001 mm on the other. Use of the swiveling machine table on the longitudinal slide enables the whole length of the surface to be grounded and acts as a support for the workhead, the tailstock, and also accessories and devices.
The turret wheelhead can be used for both external and internal grinding. It can be equipped with an extra grinding wheel and internal grinding spindle for this purpose. With extreme precision, the user can manually (2.5 deg) index the turret wheelhead in a Hirth gear within a swiveling range of -15 deg/ +195 deg. Grinding wheel dimensions: diameter 19.69 in, width of 2.48 in x 3.15 in, bore of 7.99 in.
It has a drive power of 12 hp. The cutting speed maximum of 9,843 sfpm enables efficient removal values during the grinding process. The speed of the belt-driven internal grinding spindle can be infinitely variably regulated. Spindles are available with nominal speeds of 20,000, 40,000 and 60,000 rpm.
The generously dimensioned barrel, designed for the deployment of MT4 taper centers, glides in the tail stock housing. The fine adjustment enables taper corrections in the range below 1μm when grinding between centers. In order to guarantee optimum thermal stability, a cooling lubricant is passed through the tail stock, and completely covers the barrel and diamond holder.
The versatile universal workhead with MT5 fitting taper is capable of both live spindle grinding and grinding between centers. The workhead spindle is mounted on roller bearings, in low maintenance and processes an excellent roundness accuracy of the below 0.0004 mm.
The fine adjustment allows for cylindrical corrections in the 1μm range during live spindle operations. Extreme runout accuracy is 0.000016 in, chucked or between centers. The workhead provides 1-1,500 rpm for the right speed for each unique application.
The Fanuc 0i CNC with active flat color monitor (10.4 in) is extremely reliable and optimally matched to the drive elements. All controls are clearly and ergonomically arranged. The optional Sensitron electronic contact detection function enables downtimes to be reduced to a minimum.
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