Product category:
Turning tools
News Release from: Stellram | Subject: Stellram Posimatic inserts and tools
Edited by the Manufacturingtalk Editorial
Team on 21 March 2001
Turning tools are dedicated to precision
parts
Complex internal and external cylindrical profiles, as well as single-point threading and grooving, are generated by Stellram's wide range of Posimatic inserts and tools.
Complex internal and external cylindrical profiles, as well as single-point threading and grooving, are generated by Stellram's wide range of Posimatic inserts and tools designed specifically for precision parts production Believed to include the biggest range of threading and grooving tools on the market for precision parts turning, the Stellram Posimatic range applies to carbon, alloyed and stainless steels, refractory alloys and non-ferrous metals
This article was originally published on Manufacturingtalk on 21 Mar 2001 at 8.00am (UK)
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Combining three milling functions into one cutter reduces tooling inventory costs and simplifies programming when machining cast irons, steels, and ferrous and non-ferrous alloys.
Securing higher performance in milling
High productivity and security is offered by the Stellram 7702 multi-functional tooling intended for mould and die machining and milling operations in the aerospace and automotive industries.
Industry usage covers watch- and clock making, small automotive componentry, cameras and instrumentation; domestic and office machinery.
Posimatic tooling is used in CNC automatic and production lathes as well as Cam-driven automatic and manual lathes.
In developing the Posimatic range, Stellram has concentrated on efficient chip-breaking, accurate and consistently repeatable insert location and clamping rigidity to ensure high security in the turning process and to maintain consistently close tolerance machining repeatability.
Further reading
Mini tooling grooves, threads and bores
Stellram's Ultra-mini programme, consists of replaceable carbide tools that locate in a common steel shank. The tools cover application ranges for grooving, threading and boring in small parts.
3J geometry tips cut stainless steels and alloys
The new 3J geometry for stainless steels and high temperature alloys is the latest in a series of recent innovations from Stellram's research and development efforts.
Advanced insert geometry gives an extra edge
An advanced insert coating process applied to Stellram's SC1519 inserts, which feature Stellram's new 4U geometry, allow one insert grade to be used to turn all cast iron grades.
It is possible, for example, to machine, groove and face very thin spindles or shafts as used in clock-making and instrumentation manufacture.
Operations covered by a variety of small square section toolholders, typically 10mm by 10mm up to 20mm by 20mm and cylindrical toolholders from 6mm to 16mm diameter include turning and boring, single-point threading, internal and external grooving and parting-off.
Stellram's Posimatic Ultra-Mini tool bars feature profiled tipped, interchangeable tool ferrules or bars, which are located in tool carriers.
Minimum bore size is 2.8mm diameter.
Turning and boring The range of tooling includes boring bars for internal shouldering, grooving and profiling for producing complex profiles in one continuous cycle, without interruption.
The boring bars have through-coolant for clearing swarf from confined spaces.
Vibration damping bars, with tungsten carbide reinforced bodies, maintain good surface finishes and close tolerances.
Various geometry of inserts are offered, such as V and D style inserts with point radii varying from zero to 0.8mm for finishing.
Geometry -62 inserts are for turning and boring of steels, stainless steels, refractory alloys and non-ferrous metals.
They have a 6 positive rake and suit feed-rate of 0.01-0.3mm/rev.
The carbide grades are PVD titanium aluminium nitride coated micrograin carbide and for finishing, a K20 micrograin carbide substrate.
Typical cutting speed for DFZ in steels, under 0.4% carbon content, is 100-160m/min or 50-120m/min for austenitic stainless steels.
Threading In the design of the triangular part-or full thread form profile Posimatic threading inserts, Stellram has paid close attention to swarf clearance, distribution of wear on the cutting edges and to minimise contact friction between the insert and thread form.
As well as the DFZ coated carbide inserts, Stellram offers the SFZ type, which features a PVD titanium nitride coating for threading stainless steels and ductile metals.
This grade also performs well where there is a risk of cutting vibration.
Typical cutting speeds for SFZ inserts are 50-200m/min in martensitic stainless steels and 100-500m/min in non-ferrous metals including bronzes, aluminium and plastics.
Grooving Double-ended coated carbide grooving tools in the Posimatic series come in a standard range of widths from 0.50 to 5.29mm.
The tools feature accurate positioning and sharp edges for precision grooving.
They are produced in the DFZ and SFZ coated micrograin carbides.
The grooving tools can be used in carbon, alloyed and stainless steels, refractory metals and non-ferrous metals and plastics.
Typical cutting speeds for the DFZ types are 180-280m/min for steels having under 0.4% carbon content, 110-140m/min for austenitic stainless steels and 50-90m/min for nickel based alloys.
Parting-off The STTN parting-off blade tooling is based on 10mm by 10mm to 20mm by 20mm square tool bar with a maximum parting-off depth of 32mm.
Parting-off widths are 1.6mm, 2mm, 2.4mm and 3mm and infeed rates are 0.02-0.15mm/rev.
Stellram uses its MP91M multi-layer coated carbide for parting-off to provide extra durability and prevent climbing over the cutting edge, particularly when parting-off small diameters.
Cutting speeds are similar to those for the grooving tools.
Ultra-mini internal grooving Interchangeable range of tool pieces for internal grooving and profiling down to bore sizes of 2.8mm diameter include triangular and square forms.
Interchangeability avoids having to re-grind the cutting edge.
These tools are produced in SFZ PVD coated micrograin carbide and have through-coolant delivery.
Watch- and clock-making The Posimatic range includes a very comprehensive series of toolholders, boring bars and coated carbide inserts.
These are used for internal and external turning and boring.
Grooving tools are supplied in widths calibrated from 0.4mm to 3.15mm.
The range includes a choice of carbide insert geometries and grades Stellram continues to develop this extremely broad range of Posimatic tools for precision component machining, to suit a wide range of applications. Request a free brochure from Stellram ...
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