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Equipment

Equipment Complete interface for High productivity die and Eurofighter data bus copy milling tools The most complete interface avail­ Stellram has developed a range of able for meeting the requirements ball-nose, die and copy milling tools with three types of insert that of the Eurofighter aircraft 1MHz are able to cover the roughing and data bus system has been announ­ ced by ILC Data Device Corpora­ finishing of a wide range of tion (DDC). The BUS-61559 also materials from aluminium to provides a direct link to the alloyed die and stainless steels. aircraft's 20MHz fibre optic bus. The range comprises five holders BUS-61559 meets all of the with a choice of both taper and requirements of the European parallel styles. Parallel, threaded rupture strength to withstand STANAG-3838 1MHz data bus and morse taper shanks are avail­ interrupted cutting forces. The inserts are available in six diameters system in a single hybrid package able. Extended length shanks up from 10 to 32mm. mesuring only 2.1" x 1.9". The to 240mm long complete the For roughing and general fini­ product acts as a bus controller, range and these can generally be remote terminal or bus monitor obtained from stock to accom­ shing the double-sided standard and contains dual transceivers, modate deep pocket and die CM copy milling insert gives the internal illegalisation and data machining tasks. best possible combination of CPU. The device appears as a and address line buffers. No strength and stability. memory location to the host CPU One of the most important current competitive products have When the insert is finish ground, and only the standard control features for tooling that is dedicated this level of integration in a single to die milling is the confidence to a small flat at the base of the radius signal inputs are required. package. be able to predict long tool life. is produced which will vary The BUS-61559 has a typical This is because many of the between 0.1 and 0.25mm according The BUS-61559 also provides power dissipation of only 1.6 to the diameter of the insert. applications can involve extended a direct output to SEL's RT3910 watts when operated on a 25% duty cycle and the use of proprie­ machining periods with the cutting The CM-C inserts are to the STANAG-3910 20MHz fibre optic tary ICs has resulted in a low chip process often running around-the- same format as the standard CM data bus protocol. The high speed clock. type but would generate an STANAG-3910 and low speed count and consequent high MTBF improved result in materials such STANAG-3838 networks together (Mean Time Between Failures). To meet this need requires a as aluminium, light alloys and constitute EFABUS — the Euro- The product is contained in a well engineered mounting of the "sticky" stainless steels. fighter data bus system. metal 78 pin hybrid package insert to produce a stable and rigid Meanwhile, for finishg machin­ The BUS-61559, which also measuring only 2.1" x 1.9" or an cutting unit. It also requires a ing, the CM-F inserts are ground meets MIL-STD-1553 Notice 2 82 pin flatpack. It operates over quality cutting edge utilising wear-resistant carbide. with a correction factor that requirements, has internal dual the -55°C to +125°C temperture provides an exact radius without transceivers, memory management, range and screening is available to For Stellram's copy milling MIL-STD-883B. tooling programme the company any flat. The CM-F inserts have protocol logic and host processor only a single cutting edge. interface. It contains a 4K x 16 provides three types of insert in dual port RAM and a powerful the high performance titanium ILC Data Device Corporation, Stellram Ltd, Hercules Way, memory managemnt system which coated carbide grade SPZ which Mill Reef House, Cheap St, Bowerhill Industrial Estate, provides maximum flexibility with has the optimum combination of Newbury, Berks. RG14 5DD. Melksham, Wiltshire SN12 6TS. minimum overhead for the host good wear resistance and high England. Tel: +44-635-40158. Tel: 0225 706882. via Si N balls, of operating chemically inert and has a high 3 4 machines at higher speeds, with Aerospace engineering electrical resistance. Low friction greater precision and longer periods characteristics make it very suitable between servicing is of particular for applications where lubrication benefits from SiN benefit to the likes of aerospace, is difficult or impossible, and marine, auto and other industrial because it is a low heat generator, engineering/processing applica­ The impressive physical properties l-30mm in diameter. oil and grease, if used, can have a tions. of the ceramic material silicon The use of these balls in stand­ greatly extended life. Being 60 per Si N is almost perfectly iso­ nitride (Si N ) are newly available alone or bearing applications is cent less dense than most bearing 3 4 3 4 tropic. It is very hard (1600HVs, for exploitation in high precision deal for high-load or high-speed steels brings significant reductions ball applications from Spheric applications where a long, fatigue- Rc78) and abrasion- and tempera­ in centrifugal and sliding effects. Engineering. This specialist in ball free life is a principle consideration; ture-resistant; capable of with­ technology has spent the last few or where operation takes place in standing a loading of 140,000psi Spheric Engineering Ltd, (900MPa) up to 1000°C. It also years developing its own unique hostile environments where resist­ Fleming Way, Manor Royal, has a low coefficient of thermal finishing processes and Si N balls ance to wear, temperature or Crawley, West Sussex RH10 3 4 expansion. It is non-magnetic, are now available in sizes from corrosion is critical. The potential, 2SQ. Tel: 0293 541377. 30 AIRCRAFT ENGINEERING — September 1990 http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Aircraft Engineering and Aerospace Technology Emerald Publishing

Equipment

Aircraft Engineering and Aerospace Technology , Volume 62 (9): 1 – Sep 1, 1990

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Publisher
Emerald Publishing
Copyright
Copyright © Emerald Group Publishing Limited
ISSN
0002-2667
DOI
10.1108/eb036996
Publisher site
See Article on Publisher Site

Abstract

Complete interface for High productivity die and Eurofighter data bus copy milling tools The most complete interface avail­ Stellram has developed a range of able for meeting the requirements ball-nose, die and copy milling tools with three types of insert that of the Eurofighter aircraft 1MHz are able to cover the roughing and data bus system has been announ­ ced by ILC Data Device Corpora­ finishing of a wide range of tion (DDC). The BUS-61559 also materials from aluminium to provides a direct link to the alloyed die and stainless steels. aircraft's 20MHz fibre optic bus. The range comprises five holders BUS-61559 meets all of the with a choice of both taper and requirements of the European parallel styles. Parallel, threaded rupture strength to withstand STANAG-3838 1MHz data bus and morse taper shanks are avail­ interrupted cutting forces. The inserts are available in six diameters system in a single hybrid package able. Extended length shanks up from 10 to 32mm. mesuring only 2.1" x 1.9". The to 240mm long complete the For roughing and general fini­ product acts as a bus controller, range and these can generally be remote terminal or bus monitor obtained from stock to accom­ shing the double-sided standard and contains dual transceivers, modate deep pocket and die CM copy milling insert gives the internal illegalisation and data machining tasks. best possible combination of CPU. The device appears as a and address line buffers. No strength and stability. memory location to the host CPU One of the most important current competitive products have When the insert is finish ground, and only the standard control features for tooling that is dedicated this level of integration in a single to die milling is the confidence to a small flat at the base of the radius signal inputs are required. package. be able to predict long tool life. is produced which will vary The BUS-61559 has a typical This is because many of the between 0.1 and 0.25mm according The BUS-61559 also provides power dissipation of only 1.6 to the diameter of the insert. applications can involve extended a direct output to SEL's RT3910 watts when operated on a 25% duty cycle and the use of proprie­ machining periods with the cutting The CM-C inserts are to the STANAG-3910 20MHz fibre optic tary ICs has resulted in a low chip process often running around-the- same format as the standard CM data bus protocol. The high speed clock. type but would generate an STANAG-3910 and low speed count and consequent high MTBF improved result in materials such STANAG-3838 networks together (Mean Time Between Failures). To meet this need requires a as aluminium, light alloys and constitute EFABUS — the Euro- The product is contained in a well engineered mounting of the "sticky" stainless steels. fighter data bus system. metal 78 pin hybrid package insert to produce a stable and rigid Meanwhile, for finishg machin­ The BUS-61559, which also measuring only 2.1" x 1.9" or an cutting unit. It also requires a ing, the CM-F inserts are ground meets MIL-STD-1553 Notice 2 82 pin flatpack. It operates over quality cutting edge utilising wear-resistant carbide. with a correction factor that requirements, has internal dual the -55°C to +125°C temperture provides an exact radius without transceivers, memory management, range and screening is available to For Stellram's copy milling MIL-STD-883B. tooling programme the company any flat. The CM-F inserts have protocol logic and host processor only a single cutting edge. interface. It contains a 4K x 16 provides three types of insert in dual port RAM and a powerful the high performance titanium ILC Data Device Corporation, Stellram Ltd, Hercules Way, memory managemnt system which coated carbide grade SPZ which Mill Reef House, Cheap St, Bowerhill Industrial Estate, provides maximum flexibility with has the optimum combination of Newbury, Berks. RG14 5DD. Melksham, Wiltshire SN12 6TS. minimum overhead for the host good wear resistance and high England. Tel: +44-635-40158. Tel: 0225 706882. via Si N balls, of operating chemically inert and has a high 3 4 machines at higher speeds, with Aerospace engineering electrical resistance. Low friction greater precision and longer periods characteristics make it very suitable between servicing is of particular for applications where lubrication benefits from SiN benefit to the likes of aerospace, is difficult or impossible, and marine, auto and other industrial because it is a low heat generator, engineering/processing applica­ The impressive physical properties l-30mm in diameter. oil and grease, if used, can have a tions. of the ceramic material silicon The use of these balls in stand­ greatly extended life. Being 60 per Si N is almost perfectly iso­ nitride (Si N ) are newly available alone or bearing applications is cent less dense than most bearing 3 4 3 4 tropic. It is very hard (1600HVs, for exploitation in high precision deal for high-load or high-speed steels brings significant reductions ball applications from Spheric applications where a long, fatigue- Rc78) and abrasion- and tempera­ in centrifugal and sliding effects. Engineering. This specialist in ball free life is a principle consideration; ture-resistant; capable of with­ technology has spent the last few or where operation takes place in standing a loading of 140,000psi Spheric Engineering Ltd, (900MPa) up to 1000°C. It also years developing its own unique hostile environments where resist­ Fleming Way, Manor Royal, has a low coefficient of thermal finishing processes and Si N balls ance to wear, temperature or Crawley, West Sussex RH10 3 4 expansion. It is non-magnetic, are now available in sizes from corrosion is critical. The potential, 2SQ. Tel: 0293 541377. 30 AIRCRAFT ENGINEERING — September 1990

Journal

Aircraft Engineering and Aerospace TechnologyEmerald Publishing

Published: Sep 1, 1990

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