H377A composite grinding center is suitable for single piece or batch process of cylindrical face and internal hole of middle size shafts. It adopts Siemens CNC system to control the feed of wheelhead and the movement of worktable respectively. It can do automatic cycle of multi-gear cylindrical face, end face and internal hole grinding in one-time clamping. It has various functions such as coarse and fine grinding, worktable automatic jumping, workpiece rotation speed automatic switch, wheel automatic dressing and automatic compensating after dressing, workpiece automatic axial positioning, safety interlock of cycle movement and etc.
UB377A high-precision composite grinding center is a typical representative of our country's advanced industrial mother machine, helping military, aviation, machine tools, automobiles, measuring tools and other industries to a higher level of processing capabilities.
The new generation of workpiece head frame has taper adjustment function, which better ensures the taper of the workpiece for chuck and top grinding. The worktable has added a second guide rail, which can be equipped with various functional accessories such as various types of dressers to meet the diverse grinding process requirements. The machine tool is newly equipped with an online performance evaluation system based on dynamic characteristics of the grinder, which realizes the monitoring and evaluation of the grinding machine's processing status and performance, ensuring the healthy operation of the machine tool at any time. In terms of processing accuracy: the outer roundness of the standard specimen is 0.0004mm; the inner roundness is 0.0005mm.
Max. grinding diameter Φ500mm
Max. grinding length 1600mm
Internal diameter to be ground Φ15-Φ200mm
Max. internal depth to be ground 125mm
Center height 300mm
Max. workpiece weight 150kg
Wheel size Φ500×50×203mm
Wheel linear speed 45m/s
Wheel motor power 15kW
Wheelhead feed speed 0.01~10000mm/min
Wheelhead CNC resolution 0.0001mm
Wheelhead travel 360mm
Wheelhead swing angle 225° Wheelhead swing resolution 0.0001° Worktable moving speed 0.01~12000mm/min
Worktable CNC resolution 0.0001mm
Worktable travel 1750mm
Headstock rotation speed 10~500r/min
Headstock spindle bore-hole Morse #5
Tailstock sleeve travel 55min
Tailstock spindle bore-hole Morse #5
Machine noise ≤75dB(A)
a. Cylindrical surface standard test piece (Φ63×630)
Roundness 0.001mm
Diameter uniformity in the longitudinal section 0.003mm
Surface roughness Ra0.1μm
b. Internal hole standard test piece (Φ60×70)
Roundness 0.0005mm
Diameter uniformity in the longitudinal section 0.004mm
Surface roughness Ra0.4μm
c. Linear CNC accuracy
X-axis positioning accuracy 0.004mm
X-axis repeated positioning accuracy 0.002mm
Z-axis positioning accuracy 0.008mm
Z-axis repeated positioning accuracy 0.005mm
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