Product category:
Large milling and boring machines (over 2000mm in X)
News Release from: StarragHeckert UK | Subject: SHW PowerSpeed 5 travelling column machining cent.
Edited by the Manufacturingtalk Editorial
Team on 07 July 2004
Travelling column M-C removes metal at
1000cm3/min
Universal travelling column machining centre, developed for high metal removal while maintaining precise levels of accuracy and surface finish, is able to remove material at up to 1000cm3/min.
The SHW PowerSpeed 5 universal travelling column machining centre, developed for high metal removal while maintaining precise levels of accuracy and surface finish, is able to remove material at up to 1000cm3/min at its maximum feed rate With a drive system supplying up to a massive 1,000Nm of torque from the 32kW motor to power the orthogonal milling head of the machine, it has been developed utilising linear guideways with recirculating rollers in the vertical axis with a duo-axis drive constructed around twin ballscrews
This article was originally published on Manufacturingtalk on 9 Dec 2002 at 8.00am (UK)
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The ballscrews are mounted outboard of the axis guideways thus ensuring absolute parallel movement across the table and maintain maximum rigidity to accommodate the high dynamics of the machining system.
Available from StarragHeckert UK of Brackley, the PowerSpeed 5 is designed for five-sided machining of large parts while maintaining an accuracy below 0.01mm.
It has an X-axis column travel which can be specified between 2000mm and 30m and a vertical Y-axis between 1000mm and 2100mm.
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The Z-axis headstock travel is 1,300 mm.
With a programmable feed rate available up to its maximum traverse rate of 30,000mm/min, acceleration to maximum speed is extremely quick for a machine of its size at 4.5m/sec2.
Central to the highly flexible five-sided machining capability is the VFK, orthogonal universal 50 taper milling head which has a programmable choice of 64,800 different tool positions with fully automatic compensation for all distances and tool adjustments which can be made during rotation of the head axis.
In addition, the combined high efficiency HVK horizontal/vertical head is able to index between the two axis planes within just three seconds.
The drive to the X-axis of the steel fabricated column is via an electronically preloaded rack and pinion.
This is mounted symmetrically between the guideways to create the dynamics to achieve the acceleration of 4.5m/sec2.
By utilising a steel fabrication for the column, which has been optimised through finite element analysis, a reduction in weight of some 30 per cent has been made compared to a casting to enhance the acceleration and maximum traverse rate.
Meanwhile, the vertical and horizontal slideways are set upon Meehanite castings which enables high orders of damping to be maintained under heavy metal removal conditions.
Internal and/or external coolant supply to the milling heads is included and a chain-type tool magazine can be specified with options of 48, 66, 90, 120 or 150 positions.
In addition, a heavy duty six-position tool pick-up station can be mounted at the end of the table for heavy or oversize tools and units such as angle heads, high speed and high frequency spindles which can also be exchanged automatically.
In addition to a static work table, rotary and circular tables can be specified as well as higher productivity shuttle tables.
There is a choice of Fidia, Siemens or Heidenhain control systems.
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