China Universal Thread Grinding Machine

CNC LEADSCREW GRINDING MACHINE
Main useThis machine is mainly used for grinding screws with Whitworth & Acme threads and ballscrews precisely
NC system configuration1,Equipped with a SIEMENS 828D CNC system , the machine is controlled with five programmable axes including three synchronous ones.
2,No. of programmable axes
Axis Z: Longitudinal feed of wheelhead
(with grating scale) full close-looped
Axis X: Cross-feed of wheelhead
Axis C: Rotation of work spindle
(with angular encoder) full close-looped
Axis V: Vertical feed of dresser slider
Axis W: Horizontal feed of dresser slider
Out of above NC axes, C-axis and Z-axis are linked to perform thread movement;Wheel dressing is conducted by a formed diamond roller;Two electric hand-wheels can control each NC axis by hand.
Working accuracyIn accordance with the Chinese standard concerned, the pitch error of a screw with pitch not longer than6mmis surely less than the followers:
V2πp 0.006mm;V300p 0.012mm;ep 0.092mm;Vup 0.060mm
Error of pitch diameter over a rotation of 360 degree 0.005mm
Error of pitch diameter over entire length of thread0.090mm
Roughness Ra 0.32μm
Technical characteristics1,Employing a rear-mounted wheel spindle supported by hydro-static bearings, workpiece surface improves greatly.
2,The optimized workhead structure makes work spindle speed double, thus improving machine efficiency greatly.
3,The optimized CNC wheel dresser can dress grinding wheel into various required profiles
4,Oil chiller, high-flow and powerful cooling system and double-filtering system together ensure the temperature influence in grinding process to the minimum.
5,With the intelligent grinding software in man-computer interactive conversation,wheel dressing and grinding can be operated with convenience and accuracy.

Main in specification parameters