The device is 2008 National 863 support program.
The machine adopts the square structure layout, the tail frame is fixedly mounted on the bed rails, torque motor driven rotating workpiece, grinding wheel can move around and around, modular installation of multiple spindle according to functional requirements, selection and rotation of accurate positioning, to achieve compound machining camshaft.
Main structure and technical characteristics
Grinding wheel spindle system
The big wheel spindle system with built-in motor spindle, the maximum speed is 8000RPM, the use of inverter control, with a constant temperature device, pressure seal, spindle installed non-contact dynamic balancing system was built and integrated installation process, eliminating empty collision and repair AE monitoring device, to ensure the effective use of CBN wheel safety, integrated in 840D the display of dynamic balance and AE monitoring; small wheel spindle system with AC spindle motor through a belt drive spindle, the maximum speed is 15000RPM, two spindle system 90 installed in NC precision table, can be opened at the same time, also can only use a grinding wheel, according to need to choose.
Grinding wheel slide
Under the guide of V- calm unloading rail, realize wheel frame longitudinal movement, resolution of 0.001mm, repetitive positioning accuracy is 0.01mm; the upper rail is THK linear guide, THK adopts screw driver to achieve horizontal feed wheel frame (x axis), using the German HEIDENHAIN linear grating to realize closed-loop control;
Imported rotary table
Imported rotary turntable, turntable servo drive, hydraulic lock, air pressure seal.
The headstock and tailstock
The headstock adopts motor and spindle torque direct drive torque, the input sensitivity of 0.001 degrees, can achieve accurate indexing spindle supported by pairs of high precision spindle bearings, good rigidity, high precision; the tail frame adopts the linear guide rail support structure with concave grinding requirements, using hydraulic drive exit, the top tight spring, moving distance 30mm, a foot valve, manual operation, automatic grinding in self-locking.
Grinding wheel dressing
The steel wheel dressing, electric spindle direct drive, speed of 15000-18000RPM, before and after the feed of the grinding wheel frame and move around by interpolation, realize the outer circle and the forming face of the dressing, dressing by ultrasonic AE monitoring, can guarantee the maximum CBN wheel dressing safety and service life, with automatic compensation function.
Center frame
The use of manual adjustable two point support center (2), the support range of phi 20- Phi 60mm, divided into two groups to support the realization of alloy sheet.
Machine tool control system
Using the German SIEMENS (SIEMENS) 840D CNC system (standard equipment) and 611D digital AC servo drive system, using four three axis control, the cam shaft of a fixture, to complete the circle, cam cam, thrust bearing, outer circle and end (gear) precision machining of multiple cylindrical installation process and at the end.