Run-out can be relatively low on some hydraulic chuck systems, and diminish further after intensive use. However, it is now possible to take advantage of a significant improvement in this situation with the Hydraulic Chuck Jet Through, which in now part of the Big Kaiser HDC series of hydraulic chucks available in the UK from Industrial Tooling Corporation (ITC).

Hydraulic chucks compress an internal membrane in the holder body to apply uniform pressure around the cutting tool that optimises concentricity and minimises run-out. Clamping with the Big Kaiser Hydraulic Chuck Jet Through chuck series is easy, fast and safe, making it simple to change tools in the machine. With no heat-shrink clamping machines required, users can extend the life of the tool holder indefinitely, saving money and reducing the environmental impact of holder replacement when compared with shrink-fit counterparts. The through-coolant chuck provides precise clamping in the 4 to 12mm diameter range with the accurate Big Capto interface.

Giampaolo Roccatello, chief sales andmarketing officer for Europe at Big Kaiser, says: “Our jet-through hydraulic chucks are ideal for applications that would benefit from improved coolant delivery. By directing coolant to the cutting edge, you can improve surface finish and extend tool life.”

The chuck is suitable for all small to large machine shops that undertake precision milling where the lowest possible run-out is required. It combines a sleek contour and through-coolant capability to deliver significant improvements for the end user. Big Kaiser’s Hydraulic Chuck Jet Through is available for Big Capto C5 and C6 machine spindles, as well as the BBT 30/40/50, BDV40 and HSK 63 spindle interfaces.
For further information www.itc-ltd.co.uk

Work-holding specialist Hainbuch takes a comprehensive approach to zero-defect manufacturing. Stefan Nitsche, director main products, describes the basic requirements for clamping devices: they must be impervious to dirt and require almost no maintenance. Furthermore, they must offer very high rigidity and holding forces, with high concentricity accuracy offering deviations of no more than 5 µm, and minimal centrifugal losses.

Nitsche also recommends that users always use the right clamping device for the workpiece, even if this increases the set-up effort. For example, ID clamping is the best solution for five-sided machining. However, if the workpiece does not have the necessary clamping bore for this strategy, Nitsche believes that OD clamping with chucks is the ideal solution.

Says Nitsche: “We make use of our Centrotex quick change-over interface and Docklock zero-point clamping system to keep manual set-up times to a minimum – under one minute with our system instead of 30 minutes or so using conventional means – and change-over accuracy down to no more than 3 µm.”

Hainbuch’s measuring intelligence, which enables in-line process control, has been in successful use for over 15 years now; the company describes it as its third ‘zero-defect’ component. It checks the pre-machining clamping diameter down to the nearest micron, and detects the workpiece system.

“In addition, the actual clamping force on the workpiece is measured continuously,” says Nitsche.“As components gain in complexity, this represents a crucial process stability factor. We’ll be showcasing all three technologies and products live at the EMO 2023 exhibition in Hanover in September. Using Centrotex or Docklock, it’s child’s play to change over our clamping devices in seconds with microscopic precision, or use our IQ clamping devices for high-precision clamping while simultaneously performing various measuring operations.”
For further information www.hainbuch.com