We are not only highly specialised in laser cutting, but can also ... Bystronic laser
cutting machines with automatic exchange tables, loading and unloading units.
Heur kens & van Veluw Metaal industrie
Engineering & Re-Design
Introduction
Laser-cutting sheet metal
Laser-cutting tube
Robot bending
Robot welding
Assembled products
Bending
Rolling
Additional processing Quality control
Welding
HVN straaltechniek
FOR A STAINLESS PERFORMANCE
Specialist supplier Heurkens & Van Veluw presents itself as a supplier of sheet metal assemblies and frame structures. We specialise in the processing of stainless steel, aluminium and carbon steel. Established in 1998, the company has a workforce of some fifty. Our carefully selected, highly trained and motivated employees are capable of providing professionalism and expertise that you require. We can swiftly and efficiently manufacture your sheet metal, tube and square tube products. Our cutting edge machinery and advanced technologies enable us to achieve even the tightest tolerances, including short lead times and unmanned production processes. We are not only highly specialised in laser cutting, but can also perform additional processing for you, such as rolling, bending, removing sharp edges, drilling and tapping. Our further capabilities include the assembly, welding and entire finishing of components. Furthermore, we even have the in-house resources to blast and/or buff the finished products. Original equipment manufacturers (OEM) increasingly wish to present themselves as entire chain businesses. That is to say that they perform sales, engineering, assembly and commissioning themselves, but that they rely on third parties for the production of components, shells or sub-assemblies.
View of new company building of Heurkens & van Veluw and HVN Straaltechniek. Total business space 4800m2 and 600m2 office space.
Heurkens & van Veluw caters to these needs, with extremely high capacity utilisation of its machinery, thus manufacturing more efficiently and at lower cost. Our lead times are not dependent on the availability of materials. We invariably have between 100 and 200 tons of sheet metal in stock. In addition to the usual cold and hot-rolled sheet metal, we also hold stocks of various materials with special finishes, such as polished, foiled and BA sheet metal.
Engineering & Re-design Given our extensive knowledge of production processes, we are the ideal partner for all operations that you wish to sub-contract. We can apply re-design and value engineering to reduce the current cost price of your product. Re-design basically means raising the accuracy of the production process. This entails utilisation of such options as engraving, male / female joints and incisions ad bending edge’s etc. These enable us to perform improved and more predictable bending. We can then carry out highly consistent and reproducible assembly and welding, which make for more convenient finishing. Other major savings can be achieved in the use of materials, the method of assembly and reduction of the number of components. For example, by applying more extensive bending, or even manual bending if necessary.
A composite frame made of various profile types as tubing, cast steel angled sections, strips, positioned with pin/socket connections, notches on the bending line, etc.
Large amounts of section and tubing are used in contemporary (machine) frame construction. We therefore utilise the Assembler program, which enables us to design and immediately program our machinery for the production of complex section and tube structures.
Assembled products Opposite are examples of composite products for which we perform part of the assembly, the socalled preassembly process. Businesses increasingly require delivery of complete, pre-assembled products. In some cases, they even insist on testing and certification. We can carry out the purchasing of the stock or custom components required for assembly. The photos show views of packing machinery, conveyor belts, crate washers and rotating waste water filters.
Frame of a lolly packaging machine. The frame comprises sheet metal with 5 and 10mm thicknesses. The fitted protection hoods, door and lid are made of PETG plastic.
Finishing processes, such as buffing or blasting, are essential to the uniform appearance of the product. We have built our own buffing machines for the former, while products that are to be blasted are dispatched to our subsidiary, HVN Straaltechniek.
Laser-cutting sheet We have a fully automated system for laser cutting sheet metal in standard dimensions. It comprises a 4.4kw Bystronic Speed and a 4kw Bystronic Star. Each has its own automatic feed & unloading unit and automated exchange tables. Our stores comprise three towers, each consisting of twenty four cassettes for new sheet metal and for the storage of cut products. The entire system operates fully automatically. The Speed laser was specially designed for cutting thin gauge sheet and extremely high speeds, while over 600 holes a minute can be cut. The By-cell is automatic equipment used to feed and unload the cutting tables. Unloading is performed by inserting so-called ‘fingers’ beneath the sheet. Whenever a return cassette is placed beneath the fingers, they are retracted to deposit the cut products in the cassette. To prevent any scratching of stainless steel, the fingers are fitted with stainless steel bearings.
Bystronic laser cutting machines with automatic exchange tables, loading and unloading units and warehouse towers with a total of 65 cassette slots.
We also have a 3.5kw Adige laser cutting machine for cutting sheet metal with dimensions of up to 6000 x 3000mm. This machine is based on a cutting range of 3000 x 1500mm, involving transfer every 1500mm. However, all dimensions in between can also be handled, while up to four 3000 x 1500mm sheets can be loaded on each exchange table.
Laser-cutting tube We have an Adige LT Combo Adilas 2, which we use for laser cutting tube. This machine enables us to process tube of up to 225mm in diameter, but also square section of 150 x 150mm and rectangular section of up to 200 x 100mm. The fact that the machine is equipped with an adjustable carriage, enables us to process tubes over their entire length, without leaving any blank spots due to clamping. In fact, we can process tubes of lengths up to 6500mm. We use a software package known as Assembler to swiftly produce accurate drawings of products. This package draws and programs on the basis of centrelines, while it also defines the finished products to be cut from the metal tube and section.
Tube laser cutting machine with a capacity of ø16 to ø225mm, tubes are processed to □150 or �200x100mm. Full-automatic tube feed and cut products discharge.
Lengths are fed in by a fully automated system at the rear. A conveyor belt carries the cut products from the machine to the operator, where upon they are checked and packed.
Bending department Our bending department comprises folding machines, with operating widths and pressures varying from 2m and 50 tons, through 3m and 120 to 225 tons, to 3.6m and 175 tons. In addition, we have a Darley with an operating width of 6.1m and an operating pressure of 400 tons. All of these machines are equipped with CNC rear stops, angle settings and crowning. We have lifting platforms and scissor tables for smaller products, whilst larger and heavier items are handled using tilting vacuum lifters and overhead cranes. The larger machines are equipped with bending accessories at the front and rear, bearing struts and adjustable front stops, which enable us to also process products that are difficult to fold. The machines are linked to the computer system, which makes automatic back-ups of the programs. The programs are interchangeable.
View of the bending department where we have 7 bending machines of 50 to 400 tons. Maximum product length is 6m. Bending machines equipped with support accessories at front and rear.
Among the most commonly used processes are multiple setting, curved setting, progression from round to round or ronth to right angle. The execution of these processes has been greatly simplified, thanks largely to the introduction of 3D drawing & design programs (SolidWorks) and the laser cutting machines’ ability to engrave setting rules on the sheet metal.
Robot Bending The Darley folding machine is linked to an Antil bending robot with a product capacity of 120 kg. Additional manpower is therefore no longer required for the processing of heavy and/or large products. It has proven that the automated processing of medium-sized products yields cost savings, even in small series, and particularly where repeat orders are involved. However, the robot is also suitable for smaller products in large series. The option of stacking the products on pallets or boxing them is also available. The robot has a range of 12 by 3.5m, whilst there is also space for up to eight pallets to hold finished products.
Antil bending robot with a reach of 12m and a product lift capacity of 120kg. The robot can be fitted with various suction cup systems, making for optimal flexibility.
Thanks to their modular structure, the vacuum grabs can be swiftly adjusted, rendering them suitable for handling sheet metal products with relatively high numbers of holes.
Rolling We have five rolling machines at our disposal, with 60, 100, 150 and 270mm rollers. The three-metrewide rolling machine is equipped with four CNC rollers, and can process sheet metal with a thickness of up to 10mm and width of 3m. Its capabilities include shapes such as ellipses, casings, straight-radius-straight, and radii that overlap. The photo opposite shows a rolled cone comprising several sheet metal components. However, we also supply bodies, mixers and screw feeds. We use a 3-roller profile rolling machine to roll strip, angled section, tube and round pipe.
We have 5 rolling machines for working breadths of 1m-1.5m-2.5m and 3m. Four rolling machines are asymmetrical and one is equipped with 4 CNC-controlled rollers. Also an angled roller for angled sections, strips and tubes.
Assembly & welding We have programmable MIG and TIG welding equipment for the assembly and welding of frame construction and sheet metal products.
If the client requires pre-assembly, then this is performed by specially trained employees of the welding department.
Each welding booth is equipped with directed extraction, its own fuse box, orders & drawings tray, and separate connections to the central argon gas and compressed air networks. In addition, the entire welding department is equipped with a spatial extraction system that complies with the latest Health & Safety guidelines.
Businesses increasingly require delivery of complete, pre-assembled products. In some cases, they even insist on testing and certification. We can carry out the purchasing of the stock or custom components required for assembly.
Frame construction calls for a meticulous approach to both planning and execution. We therefore use workholding and welding benches that are equipped with accessories support basically any kind of frame, while ensuring that products are assembled straight, true and according to the applicable tolerances. In many cases, it is not necessary to subject welded structures to additional processing. A few of our welding booths are equipped with workbenches that are adjustable in height. Apart from ceramic blasting, the finishing of welded products may consist of buffing, brushing of electrochemical pickling.
View of a part of the welding department; each welding booth is protected by welding curtains and fitted with directed extraction. Height-adjustable welding tables for the straight and perpendicular clamping of products.
Robot welding Valk Welding’s welding robots are equipped to perform both MIG and TIG welding. The first robot is mounted on a rail, which can provide a highly substantial effective range in combination with the work-holding benches. The robot arm has an operating reach of 5000mm. The work-holding benches are fitted with manipulators, which enable repositioning of the product during the welding process. The second welding robot has a fixed position with an integrated welding source. Its double work-holding benches are also equipped with manipulators. The dimensions of the benches are 3000 x 1000mm. The integrated welding source enables welding using the following methods: lift arc, SP Mag, MIG welding with TIG appearance, thanks to adjustable arc characteristics and welding with TIP TIG. The welding robot is programmed offline, and therefore does not impinge on the production period. The fine tuning is naturally carried out on the machine itself. The laser cutting equipment can be used to manufacture the welding moulds required using male / female joints. The welding moulds are fitted with pneumatic clamps, which are secured and released by the welding program, and enable access to weld in otherwise inaccessible areas.
Welding engineers fine-tuning the welding parameters after having set the 3D welding programme. Welding template is made with the aid of SolidWorks.
Automated welding of longitudinal seams is carried out using a Gulko drive, for TIG welding systems in particular. We also have various fixed manipulator setups for both interior and exterior welds. The TIG welding processes are carried out using special hydrous gases for greater penetration; filling is carried out using TIP TIG.
Additional processing Sawing Our Bewo & Kaltenbach KKS450 saw, which is equipped with an EPS measurement system, enables us to saw accurately and reproducibly. Drilling and tapping We perform these processes using our dual WMW and programmable Alzmetall drilling/tapping machines. In addition, we have both a pneumatic (up to M12) and a hydraulic (up to M24) taping arm manufactured by Tuwi. Other processing options include spot welding, stud welding up to M12, electrochemical pickling, flow drilling and roll tapping.
Grinding and removing sharp edges This sort of finishing is often performed using the TimeSavers grinding & smoothing machine, which has an operating width of 1300mm. Other finishing processes available include: belt grinding, ScotchBrite brushing and drying. PEM insert machine We use a semi-automatic PEM insertion machine to insert bolts, nuts, threaded studs and plugs. This machine is suitable for stainless steel, aluminium and steel applications.
Measurement and quality control Our Faro measurement machine is used to check dimensioning, as it has a range of 2500mm and is accurate to within 0.01mm. We have the programs required to conveniently check products and publish measurement reports. In addition, we have various height meters, digital callipers up to 1200mm and limestone measurement tables.
Furthermore, we draw up product and project-based procedures for specific quality requirements, such as dimensioning, trueness, surface smoothness and packing methods.
HVN Straaltechniek We finish stainless steel and aluminium products by blasting the surface with ceramic beads. These remove any traces of oxidation or welding discolouration. The beads are no larger than 25μm. Thanks to the ceramic blasting factor, the finished surface is four times smoother than that achieved using glass beads. HVN has a blasting booth measuring 15 x 6 metres and 4.5 metres high. The booth is laid out in such a manner as to accommodate two people blasting simultaneously. Scraper gullies in the stainless steel floor carry out removal of the blasting medium. HVN also has a light truck, which can be used to pick up and return products that are to be and have been blasted respectively, thus ensuring that transport arrangements do not prolong the delivery period. The careful packing of blasted components is also an aspect to which we devote adequate attention, with a view to supplying a suitable and undamaged product.
HVN is a subsidiary of Heurkens & van Veluw and is specialised in ceramic blasting. The surface roughness is lower than with outer blasting techniques, making for improved cleanability.
Works by Jeroen Henneman The Scream (De Schreeuw), in memory of Theo van Gogh, photo Bert Nienhuis The Kiss (De Kus) commemorating the marriage of Prince Willem-Alexander and Princess Maxima The Lightbox in celebration of the opening of the new Euretco office Dellaert Founder Schiphol Pencil & Paper on the Provincial Government building in Zwolle Complementary Statues, Organon Oss and New Jersey Edge of swimming pool in Eibergen
FOR A STAINLESS PERFORMANCE H u n ebedstraat 2 - 5342 LK - Oss - www.heurkens-veluw.nl
