ALUMINIUM PROFILES CNC MACHINED
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ALUPRO is a 4-axis CNC controlled machining center, which has been designed for the fabrication of all kinds of aluminum & PVC profiles, light alloys in general and temporary operations of thin-walled steel profiles with special cutters.
The specific cutting force needed to machine aluminium alloys is far less than is required for steel. For the same section of swarf, the force is one third of that required for aluminium than for low-carbon steel, so it follows for the same cutting force, chip removal is three times higher with aluminium alloys such as 2017A whose level of mechanical properties is on a par with that for low-carbon steel.
The geometry of tools must be specially designed for use with aluminium alloys. Edges must be very keen and cutting tool faces must be highly polished so as to remove swarf efficiently and prevent it from bonding to the tool. Cutting angles will depend on the alloys. The rake angle of the cutting edge must be greater than 6 o and can attain 12 o. The use of tools tipped with TiN or TiCN by PVD deposition only is highly advisable for machining alloys that contain no more than 7% silicon. (Angle of 15 o for diamond coated carbide (CVD Diamond) tools and polycrystalline diamond (PCD) tools.) Provided tooling is designed for aluminium alloys, tool life is much longer than for machining steels, all other factors being equal. All wrought alloys can be machined very rapidly. With special machines (high speed spindles) the machining speed can attain (and exceed) 2 to 3000 m/min with 2000 and 7000 series alloys. Thus for a 12 mm diameter tool the cutting rate can be as high as 50,000 r.p.m. for a feed rate of 10 m/min. With very high cutting rates it is possible to obtain very thin sheet and much lighter components.
Given the low modulus of aluminium alloys, high rates of advance are not advisable, even for rough machining. The feed rate should be limited to 0.3mm per revolution. For finishing operations the rate of advance will be determined by the specified surface roughness for the finished product. The depth of cut will depend on the specified accuracy.
Lubrication is a very important factor in the machining of aluminium alloys, and has three main functions: cooling to dissipate the heat generated by cutting and friction, preventing swarf from bonding to the tools, removing swarf from the point of machining. Although three types of lubrication are available- spray mists, full cutting oil, and oil emulsions- the latter option is the most common because this method dissipates more calories per kilo of lubricant, of the order of 200 kg/J. Cutting fluids reduce friction and aid tapping operations. Lubricant spray mists are not advisable where a lot of heat has to be dissipated. The composition of cutting fluids must meet other requirements: they must be compatible with aluminium alloys, they must not cause stains or surface corrosion (no chlorine or sulphur compounds, they must have an anti-bacterial action to prevent fungal growth, they must be environmentally friendly.
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The Alu-Flex is an ideal machine for finishing aluminium profiles nested over a full bar length. The Alu-Flex is a Gantry machining center with a 4-axis milling motor of 12 kw, a tool turret of 12 places and mitre saw unit.
Mubea Systems offers a complete range of 5-axis CNC machining centres, specially designed for automatic tooling of exceptionally long aluminium profiles and panel profiles (e.g., aluminium profiles that are laid next to, and welded to, each other to construct a large floor for a train).
Mubea Systems manufactures a complete range of 5-axis CNC machining centers: we offer machinery designed for automatic tooling of exceptionally long aluminum profiles and high speed cutting of solids in aluminum and new materials like titanium
MIDAS manufactures a wide variety of large-section and high-precision aluminium alloy extruded products which are primarily used in the body frames of high-speed passenger trains and metro trains. The Mubea Profile Machining Centers machine the profiles to high-precision products!
Sjoelund, specialised in bending aluminium extrusions, has invested in a Mubea Multi-Flex profile machining center. After bending and heating the aluminium profile, the Multi-Flex measures and machines the bended profiles. From small standard extrusions to extrusions for windows and facades as well as the most complex profile cross-sections for use in buses and trains.
A gantry design and a machining area divided into two zones allow profiles with cross-sections of up to 1,000 x 380 mm to be picked up and passed through, as well as flexible working in shuttle mode. Overall, the SBZ 155 delivers extremely precise machining results even at high rates of travel, while its RPM-regulated spindle ensures high process reliability even with quickly changing loads.
We have over two dozen CNC machines, several dedicated work cells, and deburring and punch systems located in a 50,000-square-foot facility devoted to machining, fabrication and assembly of aluminum extrusions. To support machining of long custom aluminum profiles over 60 inches in length, we have eight machining centers with work envelope capabilities up to 144 inches (12 feet). We also offer laser milling for parts up to 288 inches (24 feet).
We extrude and supply aluminum profiles up to 3.500 inches (8.89 cm) in diameter. Our aluminum extrusions can have tolerances as tight as +/- 0.001\" on one or more dimensions of an extrusion, depending on the shape.
FONNOV ALUMINIUM is a custom aluminum extrusion manufacturer producing extruded aluminium profiles, machined aluminum components, and fabricated aluminum products for broad industries. FONNOV ALUMINIUM (two aluminum extrusion production sites and two large warehouses) is committed to supplying high-quality extrusion products with kinds of finishing (anodizing, powder coating, woodgrain finish, PVDF painting). We established an aluminum fabrication factory in 2007 to provide fabrication and CNC machining services, including precision cutting to length, hole-punching, CNC milling, bending, welding, laser etching, laser cutting, deburring, secondary finishing for aluminum products. FONNOV ALUMINIUM will be a single-source aluminum extrusion supplier for your aluminum projects.
FONNOV ALUMINIUM is an aluminum extrusion manufacturer with value-added aluminum fabrication and CNC machining service. FONNOV is focusing to produce high-quality extruded aluminium profiles and aluminum products. FONNOV is also your premier supplier of woodgrain(timber-look) aluminum products for architecture design.
One of the main reasons why engineers choose aluminum for their machined parts is because, quite simply, the material is easy to machine. While this would appear to be more of a benefit for the machinist manufacturing the part, it also has significant benefits for the business ordering the part, as well as the end-user that will eventually use it.
1. During the extrusion process, the extruded metal can obtain a stronger and more uniform compressive stress state in the deformation zone than forging, which can give full play to the plasticity of the CNC machined aluminum metal parts itself;
As one of the machining processes with few CNC machining aluminum metal parts and no cutting, extrusion is an advanced part processing method in modern metal processing. The extrusion process uses molds to control the flow of metal and relies on a large transfer of softened metal volume to form the required parts. Therefore, the success or failure of the extrusion process is closely related to the design of the mold structure of the CNC machined aluminum parts, the mold material and the softening of the metal blank.
2. Optimize the tool. Due to the relatively large plasticity of aluminum profiles, the CNC machining aluminum metal parts cutting deformation will be more serious. Therefore, a larger chip space should be provided to ensure the normal operation of the tool, and the number of teeth of the tool should be as small as possible.
3. Control the cutting speed. The cutting speed of CNC machining of aluminum parts profiles should not be too fast. Since aluminum profiles are softer than steel, the cutting speed is much faster. Too fast will cause many problems.
Many design engineers seeking cost savings often neglect to manufacture CNC machined aluminum parts from extruded , which is considered an expensive and challenging process. This can be a costly mistake. Extruded aluminum can allow Machining manufacturers to produce a small number of complex profiles, which can save the actual production cost of the enterprise and the cost of the entire product life cycle.
Before designing the extruded profile, it is necessary to communicate with the customer to confirm the appearance level of the product and whether the product is an appearance part or a structural part. If it is a structural part, the dimensional tolerance is relatively loose, then all the external dimensions can be achieved, without the need to use CNC to finish the appearance surface. After CNC machined aluminum parts, spray 80 or 100# glass sand, which can basically cover slight scratches on the surface after oxidation, which can reduce CNC machined aluminum parts costs.
Machined aluminum parts that