As a work-holding specialist and precision machining subcontractor, Brown & Holmes relies on coolant solutions from Rocol to keep its machine shop running at optimum levels.

Brown & Holmes CNC programmer Michael Gulliver says: “We are a global precision work-holding company, but we also work closely with prestige companies like Rolls-Royce. We’ve been using Rocol fluids for almost 10 years now and their products are excellent. We have a great relationship with Rocol and, if we have any concerns regarding the fluids, they are immediately on-site to solve any problems.”

The company deploys the UltraCut Evo 250 long-life soluble cutting fluid throughout its Tamworth site.
Gulliver says: “UltraCut Evo has made a significant improvement to our tool life. We’ve used various other products in the past, but the performance and longevity of UltraCut Evo 250 are significant. The cutting fluid also demonstrates a noticeable difference with evaporation. Previous coolants would easily evaporate within the machine envelope and wider work area, but this is not the case with the Rocol fluid. In addition, our operators have noticed that there is no longer an odour in the machine shop.”

Suitable for use with a diverse range of ferrous and non-ferrous materials, UltraCut Evo 250’s prolonged sump life and low odour is down to several factors. Firstly, the cutting fluid rejects tramp oil which, when removed/skimmed-off, eliminates the main food source for bacteria. Furthermore, the fluid itself is inherently resistant to degradation thanks to its bio-stable constitution, while the absence of biocides or skin sensitizers makes it very operator friendly.

For further information
www.rocol.com

The WNT X5G-Z from Ceratizit is a new clamping system for machining centres. Notably, the system offers optimised access from all sides, which allows the machining of components on five or even six faces. Furthermore, Ceratizit says the vice is very easy to operate and significantly reduces set-up times.

In terms of design, the lean, tapered contour of the two (mobile) fixed jaws provides the spindle head/tool with optimum access to the workpiece. The jaws also contain elastomer elements which damp vibrations, thereby playing a role in better surface quality and increasing the service life of the tool and spindle.

Another distinctive feature resides in the system’s jaws and their adapter: a special dovetail guide means the user manually clicks them into position in just a matter of seconds, with no screws or tools required. The structural design incorporates a pull-down action, where following the clamping process it is possible to secure the workpiece with precision. Moreover, the component tends to pull downwards in the clamping device through the redirection of forces, which considerably minimises any lifting during machining.

Ceratizit offers 14 jaw styles with widths of 40, 65, 80 and 125 mm, of which two 125 mm jaws are already included within the supply of a X5G-Z as part of the basic equipment. Designed to be indexable, the quick-change jaws have a classic L-shape. The open angle means they can be used inwards or outwards, a feature which opens up additional options, without extra cost.

The WNT X5G-Z clamping system comes in five models and two heights, which differ in the length of their base bodies. The shortest measures 330 mm, while the others are 430, 500, 630 and 800 mm long.

For further information
https://is.gd/pekoye

In modern machining centres, inductive sensors are the components of choice for monitoring the motor spindle clamping process. Integrated into the spindle, they must be exceptionally small and offer high repeatability to ensure smooth tool changing at all times.

Baumer offers a portfolio of miniature sensors for the intelligent design of effective spindle solutions. Products can either involve a classic concept with three switching sensors, or a smart design with one measurement sensor.

Tool change in fully automated machining centres, from removal until insertion of the new tool in the spindle, takes less than a second. To achieve maximum system effectiveness, this process must function with ultimate reliability. The error-free functioning of the smallest inductive sensors plays a major role in ensuring this attribute. For the machine to function error-free, the control requires the following key information regarding the status of the collet chuck: open and no tool clasped; closed and no tool clasped; or closed and tool clasped. The answer to this challenge are inductive sensors.

In drive and clamping solutions, the sensor technology integrates into the motor spindle. Given the confined space, sensors must be as small as possible, yet very powerful. One example is the IFRM 03 inductive proximity sensor, which has a diameter of only 3 mm. This product is available in various lengths starting at a mere 12 mm. Yet its miniature housing contains the complete evaluation electronics that are responsible for high repeatability switching points, as well as precise analogue measurement values. In addition, these industrial-grade sensors are robust, EMC-stable and comply with protection class IP67. The sensors remain unaffected by the heat, oil and vibrations that normally occur in machine tools.

For further information
www.baumer.com

Following the recent installation of a DMU 85 MonoBlock five-axis machining centre at the manufacturing facility of Cambridge University’s Whittle Laboratory, the search began for a flexible, comprehensive work-holding system. Given the important projects undertaken by the busy department, the proposed work holding needed to exhibit robust, high-precision characteristics and support rapid changeovers.

After considering several alternatives, the answer arrived in the form of Lang Technik’s Quick Point, a durable, baseplate-centred system that acts as an accurate interface between a machine tool’s table and work-holding devices. To enable Quick Point to accommodate and mount the facility’s diverse work-holding applications, the Whittle Laboratory purchased a further range of work-holding devices from Lang Technik UK, including a stamping unit, Makro-Grip five-axis vices, Avanti base jaws and soft top jaws.

Dr James Taylor, compressor research fellow at the Whittle Laboratory, which specialises in turbomachinery research, says: “In addition to the Quick Point and associated clamping devices satisfying our efficiency and precision criteria, as Lang Technik’s solution cost less than certain other less technically capable systems, our purchasing decision was relatively easy.

“Given the generous 1000 mm diameter of our new machine tool’s table, we have now located Quick-Point baseplates across the whole of the available area. Each of the baseplates is fitted with Lang Technik clamping devices. These set-ups allow us to quickly change between, for instance, vice-type machining and larger fixtures that hold the roots of our different blade designs. It helps that, in addition to accommodating our new work holding, the flexible Quick-Point system is also able to securely hold our existing work-holding devices. The speed and simplicity of Lang Technik’s Quick Point and clamping devices means that we have now achieved our aims of significantly reducing time lost between machining jobs and increasing our productive cycle times.”

For further information
www.lang-technik.co.uk

A member of the Russell Group, the University of York has more than 30 academic departments, among them the Department of Chemistry. The Department of Chemistry’s research groups cover a wide variety of disciplines, including atmospheric chemistry, renewable technologies and both medical and neuroimaging, all of which are supported by the extensive capabilities of a multi-disciplinary mechanical workshop.

Senior technician Mark Roper says the flexibility of the workshop’s machine tools is vital to its effective operation. Therefore, when the need arises to purchase new equipment, he looks for cost-effective products that add value and increase the workshop’s capabilities.

This policy is reflected in the recent purchase of a pL Lehmann CNC rotary table now fitted to the workshop’s DMG Mori CMX 600V three-axis VMC. The pL Lehmann TF-507510 was chosen as it provides the required levels of precision, ease of use and flexibility. In addition, the design and lower profile of the TF-507510 ensures minimum intrusion into a machine’s working envelope. Therefore, when compared with conventional, bulky rotary tables, the use of the compact TF-507510 results in much greater space being made available for spindle and tool movement.

Since entering operation, the pL Lehmann CNC rotary table has significantly increased the effectiveness of the workshop’s VMC by enabling it to perform efficient 3+2 axis machining.

“Fitting a pL Lehmann CNC rotary table to our existing three-axis VMC has proven a practical way add to achieve five-sided machining in a single set-up and eliminate steps in our processes,” says Roper. “Furthermore, the rigidity of the TF-507510 and its high clamping forces allows high cutting forces to be applied and precision workpieces to be produced.”

For further information
www.lehmann-rotary-tables.com