Single Ernst machine provides total deburring
A
Surtech Surface Technology Products product story
Edited by the Engineeringtalk editorial team
Apr 16, 2009
Surtech is offering the Paul Ernst range of deburring machine-tools for sheet-metal processing.
The Ernst deburring technology enables users to process materials in thicknesses from 0.8 to 100mm in hot rolled-steel, cold rolled-steel, stainless steel, aluminium and brass.
It allows deburring of material with coatings such as vinyl, aluminised, galvanised or painted parts, without damaging the surface.
The Ernst machines can process foreign parts such as dimples and throughputs independent of choices of contouring, such as laser cutting, punching, nibbling, oxyfuel or plasma cutting.
The Ernst products allow all this in one single machine, with consistent results with finishing processes such as de-slagging, deburring, graining, refining the grain finish, oxide removal, breaking or rounding the edges and washing and drying.
The Ernst deburring cylinder, which is at the core of each machine, removes big burrs at high feed-rates, using less abrasive and electrical energy.
This is made possible by the soft backing of the deburring cylinder, which applies increased pressure on the edges, regardless of their orientation.
The rubber foam system expands where the abrasive is not supported adjacent to the edge.
This causes the abrasive to mould around the edges.
On the surface, the opposite effect takes place, as the soft foam easily compresses to distribute the grinding pressure to a larger surface.
The system also ensures no secondary burr is created.
This is combined with the oscillation of the deburring cylinder at high frequency, ensuring an extremely even wear of the abrasive.
This enables users to process parts with extreme burrs, with large distortions and coated materials.
The Ernst system improves throughput by up to 30 times for manufacturers deburring heavy-plate after plasma- or oxyfuel-cutting.
An Ernst machine will typically run for less than three hours a week, delivering a return on investment of less than one year if two employees are permanently deburring.
The design eliminates paper tears, reduces abrasive costs and runs at high feed-rates.
Ernst finishing systems can achieve consistent qualified surfaces such as a number 3 or number 4 stainless-steel finish.
The grain is typically refined by applying stainless steel or scotchbrite brushing after the graining process.
One disadvantage of laser cutting without nitrogen is the oxide layer on the edges.
Ernst deburring technology can reliably remove these deposits up to 1/8in (3.175mm) from each side.
It can also enhance and speed up subsequent welding processes and make them more consistent.
Oxide removal is integrated into the brushing process and does not require an additional pass through the machine.
Ernst has also developed a tool that can clean parts of up to one-inch thickness, in only two passes.
The Ernst spring steel rake roller heads can remove oxide layers from the edges in parts up to 25mm or one-inch thickness in two passes.
The Ernst units allow abrasives to be changed in less than three minutes.
They also allow simple and quick workpiece-thickness setting.
This is improved by a fixed table-height that allows the use of in and out feed conveyors.
The Ernst machine has a panel-display of LED diagnostics for quick and easy trouble shooting.
Safety and limit switches in key locations help avoid injuries and damage to the machine.
An in-feed safety flap and motor overload protection also enhance safety.
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