Product category:
Abrasive machining - manual and CNC machines
News Release from: Emag Maschinenfabrik | Subject: Horizontal HG machine platform
Edited by the Manufacturingtalk Editorial
Team on 15 October 2001
Modular grinding platform
custom-configured
Horizontal HG CNC machine platform is designed for external cylindrical, out-of-round, face and internal grinding.
Horizontal HG machine platform is designed for external cylindrical, out-of-round, face and internal grinding The design allows for a great number of machine variants to be configured exactly in accordance with individual machining requirements: from the external grinding of one-offs and the production grinding of large batches of small or large, long or short shaft-type components (know-how Karstens) to the internal and external grinding of high-precision chucked components (know-how Reinecker) and the grinding of cams, camshafts and crankshafts (know-how Kopp)
This article was originally published on Manufacturingtalk on 12 Jan 2001 at 8.00am (UK)
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Using machine modules from the established VSC vertical pick-up volume production turning machines, Emag has developed the VL variant for batch production.
Emag develops shaft production turning centre
Emag has developed a new machine design platform for machining shaft-type components, and will be unveiled at the forthcoming EMO exhibition in Hannover.
Even very different manufacturing problems are solved by using largely identical basic machines, with all the obvious advantages for the user: standardised operation, programming and maintenance, resulting in a shorter learning curve and reduced maintenance costs.
Planning the deployment of labour becomes easier, owing to increased flexibility, making multiple-machine operation possible.
Based on this machine platform for grinding lengths of up to 3,000 mm and grinding wheel diameters of up to 762mm EMAG showed at EMO 2001 the size 3, the Karstens HG 310A for the external cylindrical grinding of medium size shaft components.
Further reading
Emag Group - a 1990s growth story
From manufacturer of simple turning machines Emag has developed into a supplier of tailor-made solutions to manufacturing problems based on vertical pick-up spindle turn-machining centres.
Pick-up spindle principle now applied to shafts
The HSC series from EMAG: the 'intelligent' machine platform for multi-functional horizontal pick-up turning and production centres for the complete machining of shaft-type components.
Combine processes into one vertical machine
Reinecker VSC DS applies the vertical pick-up machines for combining machining processes such as turning + drilling + milling + grinding + others - offer a radical approach to production machining.
The quality standards for ground components in particular, increase day by day.
At the same time process integrity has become the main criterion in serial production grinding; values of Cpk 1.67 / Cmk 2.0 are a reality.
Other important objectives of production planning are short, flexible production sequences.
Short retooling times must be achieved, to ensure that component manufacturing costs do not rise despite a steadily increasing workpiece diversity and the shrinking of batch sizes.
In addition to that, different batch sizes require different automation concepts.
The deciding factor where machining results are concerned, is the correct grinding tool.
The requirements of the various abrasives used on modern machine tools have to be met.
The same applies to cutting fluids, as they too have a fundamental influence on machining results.
Machine manufacturers (and often users too) have paid little attention to them in the past; but they must be given due consideration in any new machine design.
The new horizontal HG grinding machine platform of EMAG's grinding machine group takes account of all the demands required by modern external cylindrical grinding machines.
The basic assemblies, such as spindles, measuring devices and drives are manufactured in large numbers within the Group and assembled into working entities of modular design.
This also includes various work headstocks, grinding units, tailstocks, measuring devices, dressing attachments for CBN and corundum grinding wheels, and interfaces for loading and unloading equipments.
The thermostable machine base - also of static and dynamic rigidity - carries the slides.
The sturdy compound table design reduces the footprint and saves on expensive production floor space.
It also makes the changeover of grinding wheels easier.
NC tailstocks and flexible drivers ensure that a variety of workpieces can be quickly accommodated.
The machining area allows generous axis movements.
The energy supply circuits are maintenance friendly.
Hydrostatic guideways in all linear axes allow for smallest infeeds, with optimal continuity of movement.
They are stick-slip free and well dampened and lead to contour integrity and an exceptional surface finish.
The machine is prepared to accept cutting oils as well as emulsions and allows high pressure and high volume deliveries, which facilitate CBN technology.
The demand for operator comfort and ease of servicing is fulfilled by the standardised control system.
The EMAG on/off-line operating and programming system takes care of the varied demands made on the different machining requirements of this modular grinding machine platform.
All process-specific functions, including loading, gauging, etc., can be called up with standardised commands and are dialogue-based, a very operator-friendly feature.
Other demands from production companies have also been taken into account.
Energy supply lines are located outside the machining area.
This prevents contamination and downtimes, makes for an uncluttered machining area and eases servicing.
The machine envelope is separate from the machine base, so that outside influences can have no adverse effect on machining results.
The various grinding lengths and the different sizes of work headstocks, tailstocks and back rests allows for the machining of a large variety of workpieces from many branches of industry, from 200g to 700kg in weight, with a tailor-made machine, using the most appropriate grinding method: gear shafts, differential gear shafts, camshafts, motor shafts, pump pinions, steering pinions, slide valves, steering gearboxes, turbine wheels, compressor wheels, axles and work spindles, components for textile machinery, for wind generators and other high-precision equipment.
Kopp also will use this grinding machine platform and offer in the near future the HG 310N type for the machining of cams, polygon profiles, camshafts and crankshafts.
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