Product category:
Milling cutters
News Release from: LMT Fette | Subject: Milling demonstrations at MACH 2008
Edited by the Manufacturingtalk Editorial
Team on 21 April 2008
CBC milling of tough tool steel
demonstrated
High performance metal cutting in tough P20 tool steel will be demonstrated by LMT Fette on one of the latest heller horizontal machining centres at the UK's MACH 2008 exhibition.
LMT (UK) of Coventry will be showing high performance metal cutting in action on the latest Heller H2000 horizontal machining centre (HMC) on the Heller Machine Tools stand 5430 at the UK's MACH 2008 machine tool exhibition today LMT will show how the latest tooling technology, properly applied, can be exploited to maximise the return on investment in a machine tool
This article was originally published on Manufacturingtalk on 20 Jun 2007 at 8.00am (UK)
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Using seven of LMT's latest tool developments the HMC demonstration is being carried out on tough P20 tool steel on the latest Heller H2000.
Heller is showing the HMC for the first time in the UK.
Its high performance 38kW, HSK 63 spindle delivers 242Nm of torque and up to 10,000 rev/min spindle speed.
The demonstration processes are covering roughing and finishing of deep cavities, copy milling, solid carbide drilling, thread forming and high speed face milling to create a new datum face for a repeat cycle.
The application engineering involves roughing a cavity using an LMT 32mm diameter 4Feed cutter at 200m/min and 8,000mm/min feed rate with 1mm depth of cut.
Feed per tooth is 1.33mm.
* Copy milling - copy milling is being carried out using the 'new generation' LMT FlatBall indexable insert cutter technology that overcomes overheating and premature failure problems caused at the centre of the insert due to the rubbing action when plunge cutting.
The two-flute, 16mm diameter tool is being run at 250m/min and 5,000mm/min feed rate with a 1mm step over using 45 zigzag techniques.
* Cavity roughing - a 2Feed solid carbide two flute cutter of just 4mm diameter is being used to rough another cavity at 115m/min cutting speed and 10,000mm/rev feed rate giving a very impressive feed per tooth of 0.55mm.
* Drilling - solid carbide drilling is also being performed direct to a thread forming size of 15.02mm at a penetration rate of 500mm/min.
This is followed by rigid thread forming using an HPF solid carbide M16 x 2mm pitch carbide insert to roll an internal thread at 400 rev/min aided by the latest LMT design of Bilz Syncro tapping chuck.
* Face milling - the P20 tool steel material is being faced with the latest 4Feed, 66mm diameter shell mill cutter with six teeth at 1,000 rev/min and 5,000mm/min feed rate.
* LMT Fette at MACH 2008, NEC, Birmingham, UK, April 21-25, Hall 5, Stand 5168.
* Heller Machine Tools is on Stand 5430.
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