CNCL400 Variable Diameter Screw Milling Machine

The machine is specially designed for processing variable diameter, big lead single variable pitch cone, double cone shaped screw milling.

Product Description

MODELCNCL400
Center distance2 3 4 5 6 8 10 12m
Max.Diameter of workpiceΦ300mm
Bed width970mm(three guideway)
Spindle speeds(stepless)0.1-27r/min
Spindle holeΦ155mm
Installation mode of milling head30degree rear-mounted slant rail feed or horizontal feed
Height adjustment for Center of milling cutter+15mm,-30mm
Range of milling cutter swivel±15°
Type of milling cutterΦ69.85(7:24)(50#)
Type of milling cutter handerMorse 4#,
Milling header spindel speeds(100-250)(200-500)(machinery 2 stage stepless speed variation)
Motor Power of milling header7.5kw(frequency)
Base parameter of Control System
AxisX, Y, C axis
Min swivel6 second
Precisioncontrol error<1 pulse corresponding displacement or corner
Toilstock Spindel dianmeterΦ155
Rapid movement
Long4m/min
Cross3m/min
chip removal deviceMechanical automatic chip removal
Net Weight8000kg(3M)


The machine is specially designed for processing variable diameter, big lead single variable pitch cone, double cone shaped screw milling. It can replace screw processing by manual adopted widely at present. Spindle long/cross feed adopts ac servo motor, pulse encoder feedback. The bed guide rail has high-strength ultra audio frequency quenching and then precision grinding, the bed saddle pasted with plastic, and has little friction coefficient

Milling head motor adopts frequency conversion motor, milling head speed infinitely adjustable-speed, can process all kinds of cylinder, Cone, double cone , equal lead, gradual lead, equal slot depth and variable slot depth screws with variable pitch and slot depth.

Machining roughness can reach ra3.2; screw lead error is 0.06mm/300mm.

supmc@vip.sina.com 704276900