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 Centre Grinding Machines CNC
Centre hole grinding of series production parts requires an automated machine.
The Henninger Centre Grinding Machines can be supplied with a suitably designed control system. The Henninger controls ”Henninger CNC 2000” is easily programmed using the ”Teach-in” method.
A vibration sensor is integrated within the vice jaws of the machine. The control automatically switches from rapid-infeed speed to machining infeed speed as soon as the pin-mounted grinding wheel touches the workpiece thus dramatically reducing the so-called air-grinding time.
Compensation amounts after dressing have been ignored because most hardened parts are ground using pin-mounted CBN grinding wheels and most onhardened parts are machined using carbide precision mills.
All relevant data can be invoked on the Henninger CNC 2000 control screen.
Operation is by means of push-buttons and can be varied in increments of 0.1 mm, 0.01 mm and 0.001 mm.
Because the CNC equipment has a modular design suitable for the standard machines it is also possible to retrofit on older Henninger machines.
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| Roundness of the ground centre = 1µ |
| Workpiece clamping rangeup to 225 mm |
| Grinding range of thecentre holes 1 -130 mm |
| Taper angle of thecentre holes 45 - 120 degrees |
Grinding wheel spindle rotational speed
8.400 - 29.000 min-1 |
| Workpiece clamping length 10 - 3000 mm |
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The centre hole is the basis for all the following cylindrical grin- ding operations and the deciding factor for the quality of the complete workpiece. |
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Inherent workpiece errors such as out-of-roundness, misaligned centres, incorrect angles ( too large ot too small ) and surface finish roughness caused byprior chip removal or hardening operations can be corrected. |
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The scrap level incidence in production runs is significantly reduced by the improved repeatability of ground centres. |
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Our product range consists of numerous Centre-Grinding-Machines, which meet all our customers`requirements. For machining difficult work pieces we are able to offer special designs.
Currently, as never before, there is an ever-increasing demand for higher workpiece accuracies. This becomes very apparent by the amount of workpieces that can only be produced using the current machine parks after undergoing
very exacting set-up procedures and thus long change-over times.
Does this mean that new machines have to be purchased immediately?
Experience has shown that such a decision makes sense because it facilitates rational, interruption-free, and thus, productive manufacturing. This of course brings many substantial advantages - even for simple parts.
At Henninger we recognised this many years ago and is why we have been building centre hole grinding machines
since 1972 - at first for ourselves and since then more than 600 for other companies.
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Overview
Workpiece - dimensions
