Hanjiang Tool Corporation M6420 CNC Hob & Cutter Sharpening Machine – Year 2017
HanJiang 4-Axis cnc Hob sharpening machine
model M6420
New 2017
controls: Seimens Sinumeric 828D

this cnc hob sharpening machine was used to sharpen straight Gash
hob tools using CBN wheels w/user friendly software & screen data.
The machine is in excellent condition . The 4 axis design closely
resembles that of the Barber Colman style machines but in 4 axis
CNC execution

machine specs are as follows
Max outside grinding diameter 6″ / 150 mm
Max module 3.1 DP / 8 Mod
Max Grinding length 8″ / 200 mm
Number of Gashes infinite
Rake angle -20 deg/ +10 deg
Helix angle of Gash 0″
working spindle center height 6″ / 150 mm
Max Depth of Grind 1.18″ / 30 mm
Grinding wheel diameter range 4.92″-6″ / 125-150 mm
Grinding spindle speed speed (direct drive) 8,000 RPM
Grinding spindle motor Direct drive 12.5 KW
Longitudinal travel length (X-Axis) 13.38″ / 340 mm
Cross Travel length (Y-Axis) 2.56″ / 65 mm
Vertical travel length (Z-Axis) 5.34″ / 135 mm
floor space required 10′ W X 6′ Deep
Machine power 31 KVA
voltage 480 v/ 60 HZ

Machine is equipped with the following :
Siemens Sinumeric 828D cnc controller
operators pendant control
user friendly set up screens w/ part storage
attached electrical panel w/ AC unit
direct drive motors
Ball screws
forced centralized lubrication
Paperband filtration system and coolant pump
6 foot pads
operators manuals & electrical prints

this machine can be inspected in plant under power for a short time
only

Hanjiang cnc hob sharpening machine is a simple 4 axis machine for grinding or resharpening straight gash hobs of 150 mm diameter (6″ diam.) w/ CBN wheels, controlled by the siemens sinumeric 828D controls. machine has little use and was mfg new in 2017