A method for producing aluminum handwheel

Handwheel is an important component of the wheelchair, wheelchair users customize the front handwheel to manipulate wheelchairs row. Usually made of aluminum alloy wheel wheelchair to get started, because of lighter materials and resistant to corrosion. However, the traditional wheelchair and wheelchair handwheel handwheel processing methods for selecting the appropriate aluminum alloy material, the use of bender bending Yuan Cheng desired size after using sawing machine sawing curved segment ends, the hand wheel ring body shot hole post-processing needs, and then bent at both ends of welding, welding and further for overall body shaping ring grinding, heat treatment, so that the hand rim welded at the smooth, mark, does not affect, and finally after welded handwheel polished, anode surface treatment, and then after detecting no poor packaging. The processing method is more complicated, and welding, spot welding adverse inevitable, resulting in shaping the next grinding more of work, increased labor costs and higher anodizing. After the hand wheel and welded, and then the overall anodic surface treatment process between longer.
SUMMARY
In response to these deficiencies in the prior art, the main object of the present invention is to provide a method for producing an aluminum alloy handwheel, it is possible to reduce the aluminum handwheel processing step in ensuring the quality of production conditions, shorten the processing time and improve work efficiency, and reduces the amount of labor. To achieve the above objectives, technical solutions adopted in the invention is a method for manufacturing aluminum hand wheel, the steps are the steps of a, surface treatment of aluminum alloy selected aluminum tube, which was long branch anodic surface treatment, aluminum alloy tube surface evenly coated; step b, bent round and saw the end of a step into the aluminum tube bender in the bend Yuan Cheng appropriate size, and then sawing aluminum tube bends round ends after; step C, after the end of the splicing step b, the two ends of an inner cannula is inserted within aluminum alloy tube ends are bent round has been formed, the use of plug stitching machine aluminum tube ends, aluminum tube butt ends at the close fit complete hand wheel molding; the inner cannula outer diameter smaller than the inner diameter of the aluminum tube, aluminum tube and the inner cannula interference fit; step d, drilling and packaging at the end of step c aluminum handwheel on drilling, examination, product packaging. In the present invention, aluminum alloy tube anode surface treatment, the aluminum tube coated with anti-wear anti-corrosion film, extend the life of the hand wheel made after. Preferably, both ends of the inner tube surface smooth, the outer surface of the intermediate section to increase the roughness by grinding or other manner. When both ends of the aluminum tube bends round the inner cannula is inserted after the re-use plug stitching machine aluminum tube ends, so that the splice tight with, because the outer surface of the cannula through grinding or other treatment to increase the roughness so that the splicing process, the friction force is large, the splice is captive. Preferably, the length of the inner cannula is 20mm-50mm. Within the cannula length should not be too long a convenient plug-and it is not too short, too short, and both ends of the aluminum tube bite does not close, after repeated practice, the election less than a length of 35mm cannula most good length. Both ends of the inner cannula of the present invention via the lathe angle to facilitate insertion within the aluminum tube ends, during use of the connector plug machine to be assisted by a special glue, or no glue.
Preferably, the inner tube made of aluminum alloy. In practice, it can also use other metals or alloys made of materials such as stainless steel, magnesium, aluminum and other materials, aluminum alloy tube ends to facilitate insertion. The present invention uses the first post-anodized aluminum tube, then elbow, then splicing molding, machining fewer steps. Splicing molding process used within the cannula instead of the traditional welding process, compared to conventional processing methods, without the need for plastic surgery after welding, grinding, heat treatment process, reducing the amount of labor, improve efficiency and reduce costs. According to the actual operation of the calculation, using the method of the present invention for producing aluminum handwheel compared to the prior process, saving half the cost. And the method of the present invention, an aluminum alloy wheel hand made mosaic shape intact, no welding, weld marks, and because the inner cannula is placed inside the aluminum tube, but also enhances the anti-stress handwheel. The advantages of the present invention is a method of manufacturing aluminum handwheel reduces processing steps, cost savings, improve efficiency and product stitching forming a good effect.

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