• Articulated cage—produced on an EMAG vertical turning center VTC 100-4
    Articulated cage
  • PECM for the machining of blisks
    Blisk
  • Brake disc
  • Cam
  • Composite camshaft for a small engine
    Composite camshaft (joining)
  • Automobile crankshaft machined on the PM 2 series.
    Crankshaft (automobile)
  • Crankshaft (for small engines)
  • CV joints make high demands on the machining technology. Core components: Kingpins, articulated cage, joint ball
    CV Joints
  • Dies
  • Differential pinion—precision machining on VL machines
    Differential pinion
  • Differential housing
  • Distributor flange
  • Feed screw
  • Flange manufactured on VL 2 lathes
    Flange
  • Gears are machined on EMAG VL series machines
    Gear
  • Gear shaft
  • Composite gear shaft manufactured with high precision by the use of EMAG heat shrink assembly technology.
    Gear shaft (joining)
  • Gear shaft (laser welding)
  • Gear with synchronising wheel
  • Gear of an automobile gearbox manufactured on a VLC 200 H
    Hobbing gears
  • Injector body
  • Machines by the EMAG Group for Kingpin production
    Kingpins
  • Master brake cylinder
  • To machine pistons with precision poses a particular challenge for all manufacturing solutions
    Piston
  • Pump ring production on the high-precision SK 204 grinder
    Pump ring
  • Railway wheel manufactured with precision on VLC 1200 turning centers
    Railway wheel
  • Roll rings are precision components
    Roll ring
  • Screw
  • Sprocket
  • Sprocket (Manufacturing System)
  • Steering pinions can be machined with great precision on the EMAG VT machine
    Steering pinions
  • Triple-sector clutch
  • Surface layer hardening an armature shaft on an eldec MIND 750
    Armature shaft
  • Input shaft
  • Balance shaft
  • Induction hardening through precision control
    Hydraulic Valve
  • Camshaft
  • Hardening shifter shafts with induction hardening
    Shifter Shaft
  • Surface layer hardening with the eldec hardening machine
    Wheel Hub
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Screw

Screw milling is one of the most demanding hobbing tasks

The K 200 hobbing machine is designed for screw production and is unique because each profile geometry can be manufactured on one thread machine. The universal shifting milling head means that soft milling (axial, radial or tangential milling) and hard milling can both be performed on a single machine, consistently improving quality.

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Universal shifting milling head for soft and hard machining of screws

The K 200 hobbing machine is equipped with a high-performance universal shifting milling head that is extremely small and set up for hobbing of spur gears and milling of single-start and multi-start screws. Its compact design also makes swiveling the milling head under the tailstock in order to mill screw geometries possible. The hobbing machine is mostly used by manufacturers of step-down gears and their suppliers.

Utilizing the machine’s state-of-the-art drive technology, the K 200 hobbing machine threads at a level of precision perviously achieved only through griding applications. With this quality, the K 200 hobbing machine is also particularly useful for the manufacture of safety-relevant components or aerospace engineering. This high-precision gear-cutting is decisive, as work gear drives with crossed axes have generally been produced using an immersion method. Nearly all standard hobbing machines are suitable for this, although they cannot reach this level of precision. A precision of DIN7 or DIN6 is mandatory in the aerospace sector, however (e.g. for wing flap adjustment).

The K 200 hobbing machine is able to meet these specifications, above all because of the tangential hobbing option, the use of a special tool, and development of the corresponding software.

Key points in milling of screws:

  • Production of screws for step-down gears 
  • Production of screws using hard skiving

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