Renishaw enhances motorised indexing head design
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Renishaw product story
Edited by the Engineeringtalk editorial team
Jul 29, 2009
Renishaw has made a series of design enhancements to its family of PH10 motorised indexing heads for co-ordinate measuring machines.
The company said the PH10 indexing heads now have a 20 per cent improvement in repeatability and increased long-term stability.
Combined with an optional extended two-year warranty, the PH10 heads offer CMM users reliable precision in even the most demanding measurement applications.
All three variants of the PH10 heads are now supplied with a revised repeatability specification, down from 0.5um to just 0.4um (specified at a distance of 62mm), giving users improved positioning at the stylus tip.
The improved positioning is especially important in long-reach applications such as those using the SP25M scanning probe.
This has been achieved by improving the mechanical stiffness of the head design, and through enhancements to manufacturing processes.
Additionally, the use of the latest surface mount electronics technology gives further improvements to head robustness and reliability.
Renishaw's PH10 motorised indexing heads allow flexible and repeatable probe re-orientation during CMM measurement routines.
The range comprises three models, each of which can carry a range of probes and extensions, and can be orientated in 720 repeatable positions, giving access to the most difficult-to-reach workpiece features.
The PH10T supports M8 threaded probes such as TP20, while the PH10M uses the Renishaw 'autojoint' system to carry complex multi-wired probes such as SP600M and SP25M.
For machines and applications where a direct quill mount is required, the PH10MQ offers all the functionality of the PH10M.
All the range supports extension bars up to 300mm.
The improvements combine to provide increased long-term motorised head stability, giving CMM users the option to extend the time interval between calibrations.
A further differential is also provided by an 'aqua blast' finish that gives the PH10 heads a modern, matt black appearance, and clearly identifies the higher specification units.
Upgrade options for the higher-specification PH10 motorised indexing heads are being offered to existing PH10 users, who can trade in their old head via any Renishaw service centre or authorised supplier.
Additionally, users returning an existing head for repair can take advantage of a special variant of Renishaw's low-cost 'repair by exchange' (RBE) service, where a new specification PH10 head will be supplied, ensuring minimal downtime.
In both circumstances it is a quick and simple operation to install the new head, with the CMM up and running after a standard head calibration routine, without the need for specialist commissioning or changes to part programs.
For CMM users who do not use a PH10 motorised indexing head, there are also incentives to purchase a new PH10 head through approved suppliers who are participating in Renishaw's 'Changers' promotion.
A free stylus change rack can be claimed with every new head purchased, subject to each supplier's terms and conditions.
All new PH10 heads also come with a standard 12-month warranty, with an additional 24-months warranty cover available at competitive rates.
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Contact Renishaw
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