FEATURE ON WORKHOLDING

ITC unveils Big Kaiser Hydraulic Chuck Jet Through

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

Simple tool changes in a matter of seconds

With its new CMS, Schunk is launching a user-friendly manual change system for the rapid replacement of components. As well as simple and convenient operation, the extensive range of optional modules and complementary end effectors is also notable with the CMS.

Schunk’s CMS manual change system enables rapid, process-reliable changeover at the robot front end, or also on stationary systems such as in fixture construction. The manually operated system consists of a CMS-K interchangeable head and a CMS-A interchangeable adapter, handling payloads of up to 58 kg. Users can flexibly combine the system with handling or machining components from the extensive Schunk portfolio – from grippers to machining tools from the R-Emendo series, for example, for automated deburring, polishing or filing.

The CMS is the further development of the SHS changing system, which is already an established part of the Schunk portfolio, and can replace it 1:1 due to its having the same height and screw-on patterns. According to the company, the successor version now offers decisive optimisations in terms of operation, design, process reliability and usage options.

Tried-and-tested push lever technology makes operation of the CMS extremely simple and convenient. It is possible to lock the interchangeable head by hand with the adapter without the use of any additional tools. Integrated air ‘feed-throughs’ via sealing pins with cylinder seals support manual locking, so that only minimal force is required. In addition, the thrust lever has a new, cranked shape that does not conceal any of the numerous connections. As a result, all system connections are also now suitable for radial use.The CMS manual change system is available in six sizes from 40 to 125.
For further information www.schunk.com

The Hainbuch approach to zero-defect manufacturing

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

Gripper technology supports cobot applications

The adoption of collaborative robots across multiple sectors continues apace as increasing numbers of manufacturers realise the potential these robots offer to provide a cost effective and productive solution. Just as these robots have evolved in recent years to provide greater reach and payload capabilities, so too have the gripper technologies they use. Why? Well, not only to cater for a wider range of applications, but also to ensure that the gripper design and functionality complies with ISO TS 15066, which provides guidance for cobot use.

New additions to the Schmalzrange include the FXCB/FMCB area grippers, which support handling with cobots. Applications include end-of-line packaging, and pick-and-place tasks. The design of these gripper systems, which uses 3D printing as part of the manufacturing process, complies with ISO TS 15066, while the FXCB variant also includes integrated vacuum generation. Additional features of the range encompass communication technology via IO-Link, and an integrated NFC (near field communications) chip.

The Schmalz FQE series offers flexible handling of workpieces, regardless of size and geometry from different pick-up positions. Also designed for use with cobots, these gripper systems provide solutions to handling applications across multiple sectors that include the automotive, glass and electronics industry, in addition to end of line packaging and intralogistics tasks.

The ‘X’ variant of this area gripping system comes compete with an energy-efficient, fully integrated pneumatic vacuum generation system, while the alternative ‘M’ variant is for operation with an external vacuum generator. With their low weight and low noise levels, together with their smooth rounded design, the grippers are also suitable for human–robot–collaboration applications, meeting the ISO TS 15066 standard.
For further information www.schmalz.com

New round magnetic chuck for five-axis machining

SMW Autoblok Group is introducing the MillTec circular magnetic chuck for precision five-axis machining. Working in five axes allows for the use of shorter tools to increase cutting feeds and speeds. A machine equipped with this technology makes it easier to perform complex operations thanks tofive-sided access to the part, including complete profiling, undercuts, through holes and pockets.

According to SMW Autoblok, shops can achieve optimal machining performance when all five faces of the workpiece are accessible. In contrast, when deploying traditional clamping systems, machine shops often encounter limits within the processing area due to the presence of features such as brackets. As a result, many types of components end up requiring multiple set-ups, adding time and cost to the machining process. With MillTec, users clamp the workpiece from the base, without any obstacle to the tool, reducing set-ups and optimising cost efficiencies to ensure a price-competitive component that maintains profitability.

The reduced thickness (MTG: 42mm – MTB: 51mm) and lightweight of the magnetic chuck, further assist the machine’s performance, enhancingits useful range. Users will find that the MillTec circular magnetic chuck presents a steel frame that it is possible to machine to create references, holes or alignment keys.

SMW Autoblok’s Mag Autoblok division includes a full line of permanent electromagnetic chucking systems for quick and flexible workholding on horizontal and vertical milling machines, vertical turning centres, FMS systems, grinding machines, EDM machines and more. A full line of magnetic lifters for loading and unloading workpieces on is also available.
For further information www.mag-tecnomagnete.com/en