Machine Tool Case Studies

27/07/2010

Open Mind CAM Software - JK Engineering

When John Kenny left his job to start JK Engineering Ltd in 2001, the philosophy was to acquire the
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26/07/2010

Mikron 5 axis Machining Centre - Midland Precision Engineering

The catalyst behind MPE’s investment in the HSM 600U ProdMod machine was the Company’s successful
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20/07/2010

Mazak Quick Turn Nexus CNC Lathes - Williams & Co Ltd

“We have invested heavily in manufacturing systems and machine tool capacity to bring the business..
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19/07/2010

Wire and Spark erosion Machine Tools from Agie - Camcraft Ltd

The 3 machine tools replace older, less sophisticated EDM technology that Camcraft had at its
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ISG Bench Top Shrink fit unit suitable for Driven Tool Units and Tool Holders

Story added 26 February 2010.

To accommodate users wishing to gain from the advantages of shrink-fit, semi-permanent, shank style cutter to toolholder assembly ready for machining but have a low usage requirement, LMT has developed a low-cost, ready-to-run, shrink-fit assembly machine package that sells for just £2,850.

Suitable for the tool spindles of machining centres and driven tool units on turn-mill centres, the ISG 1000 bench top unit allows users to overcome problems associated with the more traditional collets and hydraulic chucks. Available from LMT UK of Meriden, the portable unit is very compact at 390 mm by 310 mm by 640 mm, is powered from a 3-phase plug-in source and will accommodate straight shank tool sizes between 3 mm and 16 mm dia by up to 290 mm in length.

Shrink-fit technology not only provides a quick foolproof and simple way of mounting milling cutters, drills and taps into a toolholder/backend, it also provides major advantages in the machining process. For instance, it creates a higher rigidity set up between the machine spindle bearings and the tip of the cutting tool. Runout at the tool tip should be less than 0.003 mm TIR which ensures a more effective rate of feed per tooth can be applied due to the more even loading and this is especially important on small diameter or long series tools. Longer cutting life also results with improved levels of accuracy and surface finish being achieved.

In addition, shrink-fit tool assemblies are better able to cope with acceleration of modern spindles and influence of centrifugal force that can allow a normal toolholding arrangement to suffer from slippage in the collet and even tool drop out.

The ISG 1000 unit takes less than 20 secs to heat the nose area of the toolholder through its 6.5 kW induction heating coil. The cutting tool shank is simply positioned in the holder and is retained as a single unit in the holder as it contracts under cooling. To speed the cooling process, included in the ISG 1000 package is a cooling adaptor that enables the heat generated to rapidly dissipate via a series of strategically positioned heat sink fins.

Also included in the LMT UK package are an interchangeable disc, clamping ring and protective gloves.



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