gearsets.
For the rst time, the
company has
developed a machine
that makes it possible to comply with
required tight tolerances via its the internally
developed Adaptive Grinding System that
allows the combination of bore hole and gear
grinding on a single machine.
MHI’s Z120A for high
precision gear rings
High accuracy gears for the aviation
industry are also required and the company’s
Oerlikon G 35 sees a new machine design for
the ve-cut method. That method entails the
consecutive machining of convex and
concave pinion anks, with different tools and
different machine settings. Due to complex
certi cation procedures for aerospace
applications, changing to another gearing is
not an option. With its two vertically arranged
grinding spindles, the G 35 is specially
tailored to this requirement. In
contrast to older dual-spindle concepts
that have xed grinding spindles, the
G 35 is equipped with two grinding
heads that are positionable
independently of each other, thus
enabling maximum exibility.
Klingelnberg is developing its
GearEngine platform, a cyber-physical
production system (CPPS) that manages data
for gears and all data for production
equipment, ensuring the traceability of the
manufacturing process for each and every
gear (provided it can be identi ed by DMC
codes or RFID chips). As soon as a gear is
identi ed for the rst time in the process
chain, GearEngine creates a digital
component le. Every machine involved in the
process reports the parameters required for
the gear currently being machined to the
platform. Thus the real component and digital
le are created as the value chain
progresses. By networking machine tools and
gear calculation software with GearEngine,
the digital data is always immediately
available for every machine involved. The IT
platform also monitors the current wear
status of all production equipment
automatically, with GearEngine able to supply
statistical information on production
processes.
GRINDING & SURFACE FINISHING LATEST GEAR FOR GEARS
Industry & product news in brief
News broke at EMO of Spanish machine tool maker Danobat’s acquisition of Dutch
hard turning specialist Hembrug, represented in the UK by Kyal Machine Tools (https://
is.gd/ebeced). To underline the news, Danobat showed a Hembrug Mikroturn 100LS on
its stand at the exhibition. The acquisition gives Danobat’s customers a wider choice
between the two complementary technologies of grinding and hard turning. Hembrug
customers will bene t from Danobat’s extended service network, a service engineer in
the United States has already been trained. Furthermore, Danobat’s grinding expertise
will be of use in Hembrug’s new hybrid hard turning/grinding machine – MikroTurnGrind
1000. This has a turret with eight xed VDI 30 toolholders, an external grinding spindle
with a 300 mm diameter grinding disc and an internal grinding spindle. Maximum
machining capacity is 380 mm diameter or 200 by 1,000 mm between centres. Hembrug
will also make use of Danobat’s automation solutions and Industry 4.0 offerings.
Danobat (https://is.gd/piwege) presented the Estarta-650 centreless grinding machine
at EMO, intended for use in manufacturing components for electric bikes. It supports CBN
technology wheels with its 120 m/s capability. For component sizes 5-250 mm, maximum
infeed is 650 mm. It also unveiled its VG-800 vertical grinding machine (800 diameter
capacity), which combines external and internal grinding, plus measuring operations for
the manufacturing of precision machine tool components. The company also revealed its
‘MyDanobat’ platform, a new portal that is already being used by customers and which
allows access to historical data on machine services, technical documentation, training
sessions in the form of tutorials, manuals, back-ups and reports.
Emag (https://is.gd/arodok) also combined turning
and grinding, unveiling at EMO its VLC 200 for the hard
machining of chucked components up to 200 mm.
Via the grinding companies within Hardinge Inc,
customers can take advantage of a new service for
re-building and upgrading Jones & Shipman Hardinge,
Kellenberger, Hauser, Voumard, Tschudin and Usach
machines. Says Jones & Shipman Hardinge UK
managing director Mike Duignan: “If you take a
universal Kellenberger VARIA for example (pictured),
a refurbishment and upgrade to include the latest
FANUC 0i control with the new Kellenberger user-friendly-menu-based programming
software could be as much as 25% less than a new machine. What’s more, through our
UK and European headquarters we have the facility to supply a loan machine for some
Kellenberger products, so that production is not interrupted.” (Jones & Shipman, https://
is.gd/uwusot)
Dr Kaiser Diamantwerkzeuge GmbH & Co KG has developed a vitri ed CBN grinding
wheel, a dressing spindle system and the dressing tools for an Okuma GP25W x65 CNC
grinding machine. The C72FCA2 dressing spindle is connected to the Okuma control
OSP-P300G via PROFINET and achieves steady circumferential spindle speed during
synchronous dressing, as well as during counter-rotation dressing. During the dressing
cycle, the control receives process data from the dressing spindle. The spindle is
equipped with integrated acoustic emission sensors that detect when the dresser and
the grinding wheel come into contact. As the sensors can determine the contact in the
micrometre range, it allows for perfect axes’ alignment. This reduces air-grinding time,
minimises wear on the diamond dressing tool and ensures a de ned abrasion of the
grinding wheel, meaning grinding operations are as productive, precise and reliable as
possible. Okuma is represented in the UK by NCMT (https://is.gd/pucuxe).
Perfect gave a European debut to its high precision Perfect X CNC Series of surface
grinders at EMO, with the representative model being the PFG-X36H. This has a table size
of 300 by 600 mm and control is provided by the Siemens 828D CNC unit that provides
users with greater programming capability for improved performance. RK International
Machine Tools is the UK agent (https://is.gd/akecub).
34 www.machinery.co.uk @MachineryTweets December 2019
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