HJMTC SK7720A Worm Grinding Machine

Specifications

It can grind ZA,ZK, ZI ,ZN worms, also can grind thread screws with various profiles, suitable for machine tool works &other.

 It is a high precision worm grinding machine and can be used for grinding various cylindrical worms such as the worms with profile ZA, ZK, ZI. It can be used for grinding the leadscrews with various profiles, suitable to machine tool works and other machinery industries.

specifications:

Max. diameter of workpiece:  200mm

Max. center distance: 750mm

Centre height: 120mm

Max. diameter ground: 200mm

Max. length ground: 500mm

Pitch ground:  Module: 1.2-12mm

                       Metric:  1-24mm

                       British:  3/1"-24/1"

Max. lead ground:150

Max. helix angle ground: ±30°

Number of starts: 1, 2, 3, 4, 6, 8, 10, 12

Work spindle speed: For grinding  r/min   0.2-4, 0.8-16

                                 For rapid return  r/min   1-5, 4-20

                                 For indexing    r/min       4

Cross traverse of wheel stock:  150mm

Rapid approach & withdrawal of wheel stock: 50mm

Wheel spindle speed: r/min  1340, 1480

Wheel size (O.D.xwidth) : 300-400x10/20

 

working accuracy:

for grinding worms with 1-2 starts: 5 grade

for grinding worms with 3 and above starts: 6 grade

for grinding leadscrew with pitch≤6mm: 6 grade