Thread rolling machine BBW

rolls up to 40 full threads per minute over a length of up to 600 mm into round bars

Thread rolling machine BBW

Unique

AMBA’s BBW thread rolling machine rolls up to 40 full threads per minute over a length of up to 600 mm into round bars. AMBA is the only manufacturer in the world to supply thread rolling machines for bolts of this size range. Bolt manufacturers using the AMBA machine for the production of bolts and fasteners for wood construction appreciate its excellence performance, precision and reliability.

Safe

Bolts and fasteners made from threaded round bars are used predominantly in constructions with glued laminated timber, also called glulam. As the threads extend over the complete length of the bolts, these fasteners guarantee safe and durable bonding between the laminated layers. They comply with applicable safety regulations stipulating that glulams have to be fastened with full-thread bolts under all circumstances.

The machine is operated with a touchscreen.
The machine is operated with a touchscreen.

Flexible

The modular design makes the machines highly flexible. They can even be customized to individual requirements.

 

 

 

The Highlights

  • Maximun threading length: 800 mm; maximum diameter: 12 mm
  • Up to 40 full threads per minute
  • Solid O-frame designed for axial loads of up to 100 t acting during thread rolling
  • Automatic feeding and discharging of the threaded bars by means of the AMBA-designed spindle system
  • Optional: ejection system or automatic stacking device

The Technology

  • Thread rolling unit using threading dies WF # 40 or WF # 50 / TR 6 or TR 7   
  • The upper die – which is the longer one of the two dies – is mounted on a movable slide.  
  • The lower – stationary – die is clamped into the die holder by means of two parallel hydraulic cylinders. The height of the die holder is adjusted by means of threaded studs.  
  • The complete drive system is arranged on the top of the threading unit. This gives the machine a very small footprint.   
  • Self-locking screw drive at the braking end of the combined coupling-braking system enables easy adjustment of the two dies relative to each other at creep speed. This design provides full exploitation of the available power.
  • Low maintenance effort thanks to central lube system.
  • Central control panel with separate device for convenient entering of the machine settings 
  • High work safety thanks to CE-compliant protective covers and light curtains    

Unparalleled throughput

Up to 40 full threads per minute. 

 

Extraordinary size range

Threaded lengths of up to 800 mm and bolt diameters of up to 12 mm

Automated operation

Fully automatic feeding and discharging

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