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It is well known that aluminum alloy is an important industrial raw material. Because of its relatively low hardness and large thermal expansion coefficient, it is often prone to deformation during the processing of thin-walled and thin-plate parts. How to avoid deformation of parts when processing aluminum alloy? Qiya summarized the following 6 methods for processing aluminum alloy. How about Rikia? The company was established in 1992. Since its establishment, the company has continuously introduced international advanced management experience and business philosophy, using industry-first CNC machine tools, high-speed cold stamping, three-dimensional laser detector measurement and control instruments and other precision equipment, as well as Panasonic’s patented technology. Develop new products and cultivate a group of high-quality professionals. Through the joint efforts of entrepreneurs and the precise expansion of foreign markets, the production of electronic products, optical products, instrumentation, automated office equipment, etc. for Panasonic, Ricoh, Canon, Epson and other brand companies Supporting parts.
1. Processing aluminum alloy-layered multiple processing method
When there are multiple cavities on aluminum alloy plate parts that need to be processed, if one cavity is processed in sequence, the cavity wall is easily twisted and deformed due to uneven force.
A better solution is to adopt a layered multiple processing method, that is, to process all the cavities at the same time, but not to complete the processing at one time, but to divide it into several levels and process it to the required size layer by layer. In this way, the force of the part will be more uniform, and the probability of deformation will be smaller.
2. Machining of aluminum alloy-proper choice of cutting amount
Choosing an appropriate cutting amount can effectively reduce the cutting force and cutting heat during the cutting process; in the machining process, the cutting amount is too large to cause the cutting force of one pass to be too large, which is easy to cause deformation of the parts, and it affects the rigidity and rigidity of the machine tool spindle. The durability of the tool will have an impact; among the various elements of the cutting amount, the one that has a greater impact on the cutting force is the amount of back-grabbing. It is said that reducing the amount of back tool is beneficial to ensure that the parts are not deformed, but at the same time it will reduce the processing efficiency; high-speed milling of CNC machining can solve this problem. It is only necessary to reduce the amount of back tool while increasing the input accordingly. Feeding and increasing the speed of the machine tool can reduce the cutting force and ensure the processing efficiency.
3. Machining aluminum alloy-improve the cutting ability of the tool
The material and geometric parameters of the tool have an important influence on the cutting force and cutting heat. The correct selection of the tool is very important to reduce the deformation of the part. So how to choose the geometric parameters of the tool reasonably, you need to pay attention to the following points: 1. Rake angle 2. Back angle 3. Helix angle 4. Entering angle, etc.
Fourth, processing aluminum alloy-the order of the knife is exquisite
Rough machining and finishing should use different cutting sequences. Rough machining requires a faster cutting speed to remove excess material on the surface of the blank in a short time to form the geometric contour required for finishing. Therefore, the emphasis is on machining efficiency. In pursuit of material removal rate per unit time, up-milling should be used; while finishing requires higher machining accuracy and surface quality, down-milling should be used when machining quality is emphasized; The cutting thickness gradually decreases from larger to zero, which will greatly reduce the work hardening phenomenon, and also have a certain degree of restraint on the deformation of the parts.
Five, processing aluminum alloy-secondary compression of thin-walled parts
When processing aluminum alloy thin-walled parts, the pressing force during clamping is also an important cause of deformation. This is unavoidable even if the machining accuracy is improved; in order to reduce the deformation of the workpiece due to clamping, it can be Before reaching the later size, loosen the compressed parts, release the pressing force, and restore the parts freely to their original shape, and then re-compact slightly; the point of action of the secondary pressing is better on the supporting surface, and the clamping force It should act in the direction of good rigidity of the workpiece, and the pressing force shall be subject to the rigid clamping of the workpiece without loosening. This has higher requirements for the experience and feel of the operator. The compression deformation of the parts processed in this way is relatively small.
Six, processing aluminum alloy-drilling before milling processing method
When machining parts with cavities, if you use a milling cutter to plunge into the part directly, the chip evacuation will not be smooth due to the insufficient chip space of the milling cutter, which will cause the parts to accumulate a large amount of cutting heat and expand and deform, or even It may cause accidents such as tool collapse and tool breakage; the better method is to drill first and then mill, that is, first drill the hole with a drill not smaller than the milling cutter, and then use the milling cutter to reach into the hole to start milling, which can be effective Solve the problems mentioned above.
The above is the introduction of the relevant content of "The old driver will take you to understand the 6 methods of processing aluminum alloy". For more details, please contact us. As a Shenzhen machining manufacturer, Richia was established in 1992. Richia is mainly engaged in cold stamping, manufacturing and assembly. , Copiers, fax machines, typewriters, cameras, micro-motor automation office equipment parts, auto parts research and development and manufacturing. For more details about mechanical processing, please inquire, we will provide you with more information!
