Product category:
CNC turning centres, mill/turning, multi-tasking centres, horizontal and VTLs.
News Release from: NCMT | Subject: Okuma and Howa 'VTM' vertical turning centres
Edited by the Manufacturingtalk Editorial
Team on 30 July 2002
Vertical turning centres mill and drill
Precision turning as well as milling/drilling operations on large components may be performed on vertical turning centres storing, as standard, up to 36 driven tools.
Precision turning as well as milling / drilling operations on large components may be performed using the latest Okuma and Howa 'VTM' vertical turning centres, marketed in the UK by sole agent, NCMT Two machines are available offering maximum turning diameters of 650mm and 1000mm respectively
This article was originally published on Manufacturingtalk on 22 May 2001 at 8.00am (UK)
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Both can be supplied with storage for up to 36 tools, providing the flexibility needed for random machining of different components or families of parts.
Both the VTM-65 and the VTM-100 feature rigid structures developed to combine heavy rates of stock removal with high accuracy and excellent standards of finish.
Construction uses rigid, box-type castings for the base and column, while slideways are widely spaced for optimum rigidity of location.
The headstock / table assembly is designed to assist chip flow away from the work zone and a chip conveyor is available as an option.
Each machine uses 200mm diameter front bearings for the main spindle, which is powered by a 30kW AC motor to give stepless speed selection in the range 13 - 1,250 rpm.
The machines use a single tool location in combination with a multi-tool magazine.
The tool post facilitates both rigid turning and rotating tool operations using ISO 50 taper-mounted tooling; the motorised spindle on the toolpost is powered by a 7.5kW motor and is automatically locked by a Curvic coupling for turning operations.
Smooth and stable feeding of the tools is assisted by use of a deadweight counterbalance for the toolpost / saddle assembly.
Tools are accommodated in a separate magazine with up to 36 storage positions being available.
Work envelope is defined by axis travels of 500mm in X and 635mm in Z on the VTM-65, and 650mm in X and 840mm in Z on the VTM-100.
Rapid traverse rates on the VTM-650 are 18m/min in X and 20m/min in Z, while the VTM-100 offers 16m/min in both axes.
Control is by a Fanuc 18TC CNC system.
Various optional equipment is available including high pressure coolant, automatic tool setting and a twin pallet changer system, as well as a carousel-type APC with six pallets. Request a free brochure from NCMT ...
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