Gripping News

Tri-Grip compact collet closer

Designed for use on either vertical or horizontal machining centres, the Lexair Tri-Grip collet closer maximises the raw material loading capacity of any machining centre.

Featuring a compact design with three closers integrated into one body the Tri-Grip unit has simplified hydraulic plumbing and an accessible-from-the-top collet locking screw which allows the part to be correctly orientated. With a maximum working pressure of 5,000 psi and a drawtube force of 1.1 times the applied pressure, the Tri-Grip units provide ample grip for any machine shop’s workholding needs.

Double acting, fixed-length operation maintains the height from part-to-part, the Tri-Grip units can be combined in multiple configurations on a fixture by the use of connectors bushings. This eliminates the need for external pipe work between the units.

Precision and efficiency

In production engineering anything that can save time or removes an operation also saves money. Bison’s quick change toolposts allow quick and easy to set ups, providing a flexible approach to machining and giving significant savings in set up times. Up to three tools can be used per set up and the indexing facility allows a single tool to be used for turning, facing and chamfering.

Also, fast and simple centre height adjustment eliminates the need for packing pieces. While the quick change toolpost offers benefits within a production environment its greatest gains are found with one off jobs that cannot be set up for production.

The Bison range uses high quality steel, hardened and ground, finished to very close tolerances and produced in a variety of sizes to suit lathes from 89 mm (3.5-inch) to 292 mm  (11.5-inch) centre height.  

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COLLECTIVE BENEFITS OF COLLET CHUCKS

The Lexair Full Bore chuck range allows the full inner diameter of the lathe or turning centre’s spindle to be used because it does not require a draw tube. The range features a self-contained construction, with mechanical grip and an air release front actuated collet chuck.

Higher spindle speeds are achievable since a collet chuck does not have heavy jaws that lose grip force as the spindle speed of the lathe increases. 

Compared to normal collet chucks the Lexair Full Bore range provides an increased capacity of 25 to 30 per cent. This will provide significant cost savings for engineering companies carrying out bar fed turning operations because it means that they no longer have to over specify their machine tools.

Also designed to maximise productivity for bar fed applications is the Prodyne Servo collet chuck range.

These chucks have been designed for use in programmable bar feeder applications where accurate positioning of the stock is required. 

Diary Dates

Autosport Engineering - NEC

10th to 11th January

Southern Manufacturing

13th to 14th February 

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