Superabrasive machining increases throughput of super alloys, heat treated steels, ceramics and composites

Citation

(1999), "Superabrasive machining increases throughput of super alloys, heat treated steels, ceramics and composites", Assembly Automation, Vol. 19 No. 3. https://doi.org/10.1108/aa.1999.03319caf.011

Superabrasive machining increases throughput of super alloys, heat treated steels, ceramics and composites

Superabrasive machining increases throughput of super alloys, heat treated steels, ceramics and composites

Keyword: Machining

Known as Superabrasive Machining or Turning systems, Edgetek machines have already established themselves in a wide range of industries including the aerospace, power generation, automotive, powdered metal and associated sectors of North America, Europe and the UK (see Plate 8).

Plate 8 CBN Superabrasive machining system.

Described as being more akin to milling and turning, in terms of stock removal rates and flexibility of operation, superabrasive machining uses preformed steel core wheels, electroplated with Cubic Boron Nitride (CBN), to provide a surface finish similar to that of grinding.

Thanks to the relatively high feed rates and the high rpm involved, coupled with the excellent vibration damping characteristics and stiffness of Edgetek machines, the Edgetek CBN superabrasive system makes for an extremely effective way of machining difficult materials.

Of crucial importance to many applications is the fact that the forces induced in the workpiece are far less than those experienced by traditional milling or turning operations. As a result of this characteristic, there is virtually no deformation of the workpiece and the prospect is opened up of being able to machine many components far more effectively than at present, often with simpler, cheaper fixtures and fewer operations.

There are two basic forms of Edgetek machine: a dedicated Superabrasive Turning System (SAT), and the more widely known Superabrasive Machining System (SAM). The Superabrasive Machining System is available as a three- (3), four- (4) or five- (5) axes GE Fanuc CNC controlled machine tool, enables users to machine complicated components through several planes if necessary and in a single set-up. As well as a rotary table, providing the "B" axis movement, a trunnion fixture can be used so that full "A" over "BIC" axes are operable.

These new machines are particularly attractive to production engineers looking to increase throughput of components made from nickel and super alloys, as well as heat treated steels, ceramics and composites.

Details from Mark Franckel, Jones & Shipman International, Narborough Road South, Leicester LE3 2LF, UK. Tel: +44 (0)116 289 6222; Fax: +44 (0)116 289 2945; E-mail sales@.jones-shipman.co.uk