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A LISSMAC Model SBM-GS plate deburring and corner rounding machine has been supplied by Surtech to a manufacturer of ready-to-install heavy and complex welded assemblies for construction machinery, transport vehicles, plastics processing machines and more.

Model SBM-GS with conveyor

Last year, the manufacturer’s flame-cutting machines handled steel plates with a total weight of around 10,000 tonnes of plates from 25mm up to 120mm. The thicker the plates, the larger the nodules and burrs. With very thick plates, the nodules are removed using chisels. The cut plates prepared in this way are then deburred using handheld angle grinders — a strenuous job with an unhealthy body posture, noise, sparks and intensive dust development.

Manual deburring cannot guarantee exact and uniform edge machining, nor is uniform rounding of the cut edges possible. In order to carry out this work in line with the manufacturer’s high quality standards, it selected the LISSMAC machine.

The SBM-GS 1500 grinding and deburring machine has a total of eight grinding units with which the plates are dressed. After delivery of the sheet-metal parts from the feed belt, the work pieces are guided through the machine by pressure rollers. In the front part of the machine there are two abrasive belt grinding units positioned parallel that grind the sheet metal parts from the top, and two units that dress the sheet metal parts parallel from below. These first four units grind off the burrs and nodules produced during flame cutting.  Only when the plates are clean can the following four grinding units carry out the precision rounding work. For this, two units each above and below the plate drive counter-rotating abrasive belts.

The intuitive display allows setting of the grinding units quickly and easily. The frequency controlled feed permits continuously variable setting of the throughput speed. When the grinding belts are new, only the thickness of the plates has to be set.

As the abrasive is worn off the belts the feed speed can be adjusted accordingly.

Key application benefits

  • The rounded edges produced by the LISSMAC machine contributes to enhanced quality and service value. The rounding of the cut edges also ensures safe manual handling of the cut parts.
  • The SBM-GS1500 grinding and deburring machine completely deburrs the thick plates on both sides in a single pass and rounds off all inside and outside edges.
  • It operates just as reliably in the thin-sheet range as in the range of thick plates up to 120mm, where it can remove burrs up to 5mm in height.
  • It saves around two-thirds of the time previously needed for manual deburring.
  • The pivot system for the tool change on the machine has proved to be extremely useful in practice. It allows for easy changing of the abrasive belts in about 15 minutes.

Surtech Surface Technology Products

Since 1973 SURTECH (SURFACE TECHNOLOGY PRODUCTS LTD) have been selling the largest UK range of grinding, deburring and polishing machines since 1973. We offer belt grinders; portable abrasive power tools; sheet-metal deburring machines; foundry grinding; fettling and cutting machines; robot cells for grinding, deburring and polishing, and more. Our machines grind, grain, deburr, round and radius edges, finish, polish, cut, bevel and chamfer.

Since 1973 SURTECH (SURFACE TECHNOLOGY PRODUCTS LTD) have been selling the largest UK range of grinding, deburring and polishing machines since 1973. We offer belt grinders; portable abrasive power tools; sheet-metal deburring machines; foundry grinding; fettling and cutting machines; robot cells for grinding, deburring and polishing, and more. Our machines grind, grain, deburr, round and radius edges, finish, polish, cut, bevel and chamfer.

Latest technology

We design and manufacture some of our dedicated machines and we import machines from around the world from leading manufacturers. We constantly review the needs of our customers and we tailor our product range accordingly. To complement our machine range we stock most accessories such as dust extractors, contact wheels and welding tables. We also offer a complete range of abrasive and polishing consumables, including: abrasive belts, abrasive wheels, abrasive discs, polishing mops and buffs, polishing compounds, cleaning and protecting chemicals.

After-sales service

At SURTECH we have our own workshop and repair department, staffed by factory trained engineers and equipped to handle servicing, repairs and modifications of all machines.

Abrasive test centre

This is where you will find the UK’s largest selection of the very latest grinding, deburring and polishing machines, accessories and abrasive and polishing consumables. You are invited to bring your parts and to discuss your requirements with our skilled engineers who will also set up practical demonstrations. See for yourself how our machines can be used to solve problems and to improve efficiency.

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