Because of their numerous benefits, including low weight, simple machining, and adequate strength, aluminum alloy shell parts are garnering an increasing amount of interest in a variety of industries, including the automotive and aerospace industries, amongst others. As a result of their susceptibility to deformation during processing, aluminum alloy shell parts are not as widely used or applied in the manufacturing industry as they might otherwise be. As a result of this, minimizing the processing-induced deformation of aluminum alloy shell parts has become a challenging challenge that manufacturers of processing equipment need to meet head-on and find a solution for.

The casing of the transmission is made of aluminum alloy, and the casing itself is divided into three parts: the main casing, the casing that houses the torque converter, and the casing that serves as the rear cover. Each of these parts has a structure with thin walls. During processing, a number of characteristics are altered, one of which is the flatness of the large end surface of the rear cover shell. Turning is used in the processing of the back cover shell, and the equipment that is used in the processing is a TNA400 CNC turning center. The piece of work is positioned so that it can be clamped between two pins on one side of the table. When the workpiece is positioned, it is necessary to find solutions to the problems of how to make the workpiece have a certain position in the fixture and how to ensure that the workpiece has sufficient positioning accuracy. Both of these problems must be solved before the workpiece can be considered positioned.

Because of the low rigidity of parts made of thin-walled aluminum alloy, such as the back cover shell, the clamping force needs to be limited to a lower value so that the workpiece does not move, rotate, or become vibrated as a result. It is recommended that the maximum allowable clamping force that does not result in the workpiece being deformed to an excessive degree be raised. In order to achieve the best configuration and cut down on the clamping deformation that occurs during the processing of the workpiece, the clamping position should correspond to the positioning position and the support position. Additionally, the direction of the clamping force should try to avoid being consistent with the direction of the clamping deformation. During the processing of an aluminum alloy shell, there CNC milling part are many external factors that contribute to its deformation. These factors include, but are not limited to, the tool parameters used for cutting, the machining accuracy of machine tools, and the clamping schemes of parts, etc.

When it comes to parts made of thin-walled aluminum alloys, such as the back cover, once the large end face of the part has been finished, the wall thickness of the part will begin to decrease, which will cause the rigidity of the part to decrease as well, as well as increase the possibility of processing deformation. It is necessary to change the cutting parameters and the cutting method of the tool in order to reduce the processing deformation. Additionally, the original one pass should be changed to two passes in order to reduce the amount of cutting that occurs during each pass. The clamping deformation that occurred as a result of the error that was present in the workpiece blank itself is the primary factor that led to the rear cover's aluminum alloy shell becoming misshapen.

It is strongly suggested that you go with the positioning and clamping approach. The positioning and clamping method that has been optimized can significantly cut down on the clamping deformation that is brought on by an inaccurate positioning reference plane of the back cover shell blank itself. The processing practice has demonstrated that the deformation can be significantly reduced after the positioning clamping method is adopted. This was the hypothesis. According to the findings, the positioning and clamping method of the fixture needed to be re-modified, but after doing so, the flatness of the large end face of the processed automatic transmission rear cover housing was significantly improved, and it now satisfies the requirements of the blueprint design. This was accomplished by re-modifying the fixture.

High-precision processing equipment is required in the processing process in order to overcome the problem of reducing the processing deformation of the aluminum alloy shell of the transmission back cover. This equipment can effectively ensure that the processing accuracy of the parts is maintained. There is a certain effect that can be had on improving the processing deformation of thin-walled parts. This effect can be achieved by adjusting the cutting parameters, using multiple passes, reducing the cutting amount of each pass, and maintaining the best possible overall rigidity of the thin-walled parts. It is possible to effectively prevent the occurrence of clamping deformation by reducing the clamping force of the fixture to a moderate degree.

Aluminum alloy shell parts are finding more and more applications across a variety of industries as a direct result of the ongoing development and advancement of material science and processing technology. Shell parts made of aluminum alloy can be found in a wide variety of applications, ranging from aerospace to electronic products, and their prevalence is getting close to being unavoidable. A trend toward higher and higher structural integration and more and more complex structures can be seen in the aluminum alloy shell parts that are produced as a result of the diversified development of products. Housing components made of aluminum alloy play a crucial part in lowering the CNC components overall weight of the apparatus, as well as improving and enhancing its overall performance.

Following the cutting of the bar into a blank, which is followed by heating and hot-heading of the blank, the blank is then reheated. When producing aluminum shell parts with elongated deep blind holes, hot back-extrusion punching is performed on the reheated billet to achieve the desired effect. Turning of extruded and punched parts should be completed. After that, drill a series of narrow and deep blind holes into the shell made of aluminum alloy. The most effective means of processing combine high levels of both efficiency and benefit. Processing the aluminum alloy shell parts with slender and deep blind holes using the method described above has been shown to significantly improve both the efficiency of the processing and the benefit of the processing. This was demonstrated through production practice. Through the implementation of this innovative processing technology, the material utilization rate has the potential to be increased by more than 1. 5 times, production efficiency has the potential to be increased by more than 6 times, and the cost of production has the potential to be reduced by more than 50%.