FEATURE ON TOOLING

Zenith closes loop on boring adjustments

The development of Zenith by Rigibore has eliminated any manual intervention or machine downtime to achieve micron-level automatic adjustments on fine boring tools.

Industry 4.0 compliant Zenith is a closed-loop system providing a practical solution that works with in-process gauging and the machine tool’s control system.
Making minute adjustments to fine boring tools has, in the past, required the tool to be removed from the machine and adjusted manually in a pre-setter, a process which interrupts production, is time consuming and demands a skilled person to be involved. Having developed its ActiveEdge wirelessly adjustable boring bars, the next step for Rigibore was to “close the loop” on this semi-automatic system, and make it fully autonomous. The result is Zenith, which can automatically compensate for insert wear, temperature drift and material inconsistency without the necessity of removing the tool to a presetting station.
Zenith makes use of Rigibore’s ActiveEdge boring tools, which feature boring cartridges that can be wirelessly adjusted. This wireless capability is powered by batteries in the tool’s ‘yoke’, which means that the system can make adjustments to the boring tools wherever they are in the machine, either in the spindle or the tool carousel.
So confident is Rigibore that Zenith will deliver on its promises that, subject to carrying out a survey and analysis of current manufacturing requirements, Rigibore will install and make all necessary changes to the machine’s control free of charge. Customers can then take one of two options to pay for the system, either in full after one-month’s trial period or, over six-monthly instalments.
For further information www.rigibore.com

Parting tools for small lathes

Horn has introduced a grooving and parting-off system, 32T, for Swiss-type lathes and smaller fixed-head lathes. With a precision-sintered grooving insert and central clamping screw, the system offers easy insert indexing and direct entry into the seat of the tool carrier.

Importantly, there is no need for clamping elements, which may have a detrimental effect on chip flow. The screw head of the clamping bolt does not introduce interference and therefore permits grooving and parting-off directly at the spindle. Inserts can be used in a neutral position or as left-hand or right-hand configurations.
By adding the new system to complete its triple-edge insert range, Horn is responding to customer solution requests for Swiss-type lathes and other smaller turning machines, in particular for applications where space is at a premium.
The maximum groove depth using 32T is 4 mm with a width of 2 or 2.5 mm. For grooving, the inserts are available with both straight and full radius cutting edges. Horn offers the insert
with a 15° chamfer for parting-off. A cylindrically ground chip-breaker geometry makes for reliable chip removal. The tool carrier is designed as a square shank of 10 x 10 mm or 12 x 12 mm cross section. Each version features internal coolant supply.
For further information www.phorn.co.uk

Top grades for hard-part turning

Sandvik Coromant is releasing two grades for interrupted hard-turning operations: CB7125 and CB7135. Available immediately, the grades complete the company’s offer for hard turning, complementing the existing CB7105 and CB7115 grades.

The latest Sandvik Coromant grades provide the ability to perform medium-to-heavy interrupted cuts and remove the hardened layer (depth of cut up to 2 mm) in case- and induction-hardened steel components, typically for the automotive industry. Here, CB7125 and CB7135 offer longer and more consistent tool life, good levels of surface finish and consistent dimensional tolerances, says the company.
CB7125 and CB7135 are optimised for turning steel materials with a hardness of 58-62 HRc. Designed for medium intermittent cutting, CB7125 features a newly developed PVD coating that provides improved wear and fracture resistance for extended tool life. This grade, which contains medium CBN content, is suitable for the turning of shaft splines and shafts with chamfered oil holes or pockets. Further applications include the facing of gears, the hard-to-soft turning of crown wheels, and the removal of hardened layers.
The CB7135 grade is pitched at the longitudinal turning of gears and shafts with un-chamfered keyways or pockets, as well as CV joint components such as the inner/outer race and cage. Featuring a high CBN content, the grade is said to offer high fracture resistance and predictable machining results.
Available for T-Max P, CoroTurn 107 and CoroTurn TR tooling systems, the grades come in both positive and negative basic shapes, with various edge preparations.
For further information www.sandvik.coromant.com

Insert app boosts productivity

In a move designed to help machine shops increase productivity, tool life and process reliability, Walter is now offering an app that enables users to quickly and easily replace existing cutting tools – including those currently applying competitor tooling – with the latest Walter indexable inserts.

Rather than endless menu options, a simplified search function within the Insert Converter app allows users to make selections based on insert grades and geometries – inputting the current geometry before the alternatives available from Walter are displayed.
Recommended grades or geometries may vary considerably depending on the workpiece material type, in which case the user will receive additional details such as the coating process or ISO classification and, in the case of ISO geometries, the indexable-insert type. Applications include ISO turning, grooving and parting off, while in addition to carbide cutting tool materials, CBN, PCD, ceramic and cermet are also covered.
Walter’s Insert Converter app is compatible with Android and iOS (Apple) devices, and is available as a web version via a browser – and offline, if required. The app can be downloaded from the App Store, Google Play or via Walter’s website.
For further information www.walter-tools.com

Cutting tools – and a great deal more

A recently signed annual ‘Preferred Partnership Agreement’ has been signed between Glasgow-based Walker Precision Engineering and Seco Tools UK.

The agreement, with its emphasis on continuous improvement and best-practice methods to help WPE increase productivity levels, reduce operational costs and optimise machining processes, provides the company with preferential and priority access to a range of Seco’s technical consultancy services, including: on-site and off-site technical support; turnkey and process improvement; documented cost reduction (DCR) programmes; custom tool design, manufacture and supply; STEP (Seco Technical Education Programme) training courses; regular updates on new technologies and process developments; and new tooling and service introductions and upgrades.
To ensure that the agreement is focused, proactive and maintains momentum, regular monthly planning and quarterly review meetings with key personnel from WPE and Seco are scheduled.
Within the first few months of the agreement being signed, the partnership was delivering results, most notably with the machining of a complex precision chassis part-manufactured by WPE for a defence industry customer. Working in partnership with Seco’s product and technical staff, and employing process improvement strategies and a focused DCR programme, WPE has been able to reduce cycle times for this part by 40%.
At one of the planning meetings, Seco presented an overview on My Pages – the company’s digital portal that provides customers with access to Seco product information, cutting data, previous purchase history and test reports. Benefits include the ability to quickly and reliably find the most appropriate tool for any specific application, which is achieved by searching the on-board SUGGEST database and selecting specific component characteristics, machining priorities and machining strategies that will be employed.
For further information www.secotools.com