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Products » Milling » Thread cutting machines

ZFWVG 250
Multi-spline profile and
thread cutting machine

  
Designs & technical data



Universal
  • Long thread hobbing machine for single and multi-start external threads with lead ranging from 1 - 800 mm

  • Internal thread hobbing

  • Milling of short internal and external threads

  • Hobbing of axis-parallel and spiral profiles

  • Hobbing of axis-parallel profiles in single-indexing mode

  • Milling of work pieces with variable core diameter in axial direction of the work piece




High machining accuracy
  • Workspindle drive assembly with single-start duplex worm gear to guarantee low-play gear meshing

  • Secure work clamping by collet or jaw chuck and outer support by tailstock

  • Work support through bushing and jaw-type steady rests


Optimum adaptation to the machining job
  • Stepless feed and workspindle speed ranges through controlled c.c. motor

  • Purposefully stepped driving ranges for tool and feed

  • Optimum efficiency

  • Economical down hobbing/milling due to strongly dimensioned workspindle featuring play-free duplex work gear and play-free adjustable leadscrew nut for the table traverse

  • Rapid traverse of the hobbing slide to shorten the non-productive time


Extended field of application requiring little changeover expenditure only
  • Wide range of special accessory items and large-scale selection of hobbing units

  • Secure and fast exchange of the hobbing units allowing economical application in single-part as well as small-batch production runs.

Designs & technical data

Design: Vielnutprofilwälz- und Gewindefräsmaschine ZFWVG
Working ranges
Hobbing length mm 800/1250/2000/3150/5000
Centre height over sliding guideways of the base mm 260
Maximum work diameter over sliding guideways of the base mm 500
Maximum work diameter over hobbing slide mm 250
Workspindle bore mm 102
Maximum bore diameter in the collet mm 100
Tailstock quill traverse mm 100
Lead of the screw inch 1/2 left-hand
Work speed (thread milling)
Range, infinitely variable rpm 0,0032...2,6
Feed-rate
Hobbing, infinitely variable range mm/work rev. 0,027...5,68
Longitudinal hobbing, infinitely variable range mm/min 0,3...198
Rapid traverse rates
Thread milling with lead 1-100mm mm/min 10,9...1090
Thread milling with lead 1-800mm mm/min 816
Hobbing mm/min 816
Longitudinal hobbing mm/min 816
Power
Main motor kW 4
Rated torque of c.c. feed motor Nm 25
Coolant pump kW 0,09
Lubricating oil kW 0,37
Electrical installation
Operating voltage V 380
Control voltage V 24
Frequency Hz 50
Total load connected kW 9,5
Space required depending on the working length 800/1250/2000/3150/5000
Length mm 2800/3200/4000/5200/7000
Width mm 2500
Height mm 1600/1800/1500/1600/1600
Others
Net weight kg 3400/3800/4300/5100/6700
Coolant tank capacity l 40/40/40/75/110
Illustration: 
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