Problems In The Process Of CNC Machining Of Thin-walled Parts
(1) Problems in the machining process
The CNC machining process of thin-walled parts requires that the thickness of the entire part does not exceed 1mm. Although the overall structure of thin-walled parts is relatively compact, the rigidity is poor and the strength cannot meet the actual production and processing requirements. In the actual processing process, the processing effect is often caused by the material itself. Does not meet the actual design requirements. Therefore, reprocessing should be carried out by improving the process to ensure the processing effect.
(2) Problems with the machining method
In the process of part clamping, on the basis of ensuring the compactness of the entire clamp, proper adjustment and optimization should be carried out effectively, and the management and rotation matrix should be controlled and optimized as comprehensively as possible. At the same time, since the clamp itself is affected by the spindle, only by ensuring that all the center of gravity control is concentrated on the top of the spindle can effectively ensure the full development of each work. Effective suspension depth control and selection for the actual state of the current part to ensure that the entire length meets current design requirements. At the same time, in the production process, it should also be ensured that the strength and hardness of the clips meet the current actual needs, so as to reduce the damage of the clips and ensure the long-term operation of all the clips as much as possible. However, in practice, the control of the tool is mainly concentrated in the CNC machining and cutting of thin-walled parts. Many operators do not select the entire cut angle, which ultimately results in an overall cut angle that does not meet current practical requirements to ensure that a given machining requirement requires only a small amount of effort, ultimately ensuring that the part can be effectively controlled on a variable basis.
Process Optimization Measures For CNC Machining Method Of Thin-walled Parts:
(1) Optimize the machining technology
Compared with the traditional processing technology, through the numerical control processing method of thin-walled parts, the technological design and processing adopted can greatly reduce the data error in the processing process, thereby effectively guaranteeing the actual quality of the current part products. Through a comprehensive analysis of the technical process related to NC machining of thin-walled parts, the method of NC machining of thin-walled parts at this stage is mainly transformed from rough machining to finishing machining. In the process of rough machining using numerical control technology, it is often necessary to analyze the actual situation of the current part, and then formulate the target processing method, which can not only improve the machining quality, but also reduce the loss. After the rough machining is completed, you can continue to use technical equipment for semi-finishing, mainly to propose the relevant materials on the surface of the part to effectively ensure the accuracy of the post-processing data. In the finishing process, to effectively implement finishing, accurate data analysis must be carried out, and processing management must be carried out through fine technical means. For example, machining and optimization can be performed by fine milling the outer circle, ultimately ensuring that the overall part of the part meets the current design requirements. The CNC machining of thin-walled parts itself has relatively high processing requirements. In order to effectively improve the fine manufacturing of materials and reduce resource consumption as much as possible, in the process of CNC machining of thin-walled parts, first do a good job in CNC deformation control, and try to become the current processing method and Processing parameters, effectively propose a scientific processing plan, and finally ensure that the deformation value is within the controllable range
(2) Change the machining method
The processing method of CNC machining of thin-walled parts mainly includes three aspects: process design, part clamping tool control and so on. In the actual CNC machining process of thin-walled parts, the analysis process of the CNC policy should be effectively completed, the actual load capacity of the hardware in the actual machining process at the current stage should be clarified, the relationship between the load sequence and deformation should be effectively analyzed, and finally targeted process design method. F=KU This is the formula for the main calculation process at present. F is the load array of CNC machined parts for thin-walled parts, and KU is the light matrix, which is the technical value of machining deformation. Through the comprehensive analysis between the three, it can be observed that when the value of the load array gradually decreases, the light matrix should be effectively adjusted, and finally the overall improvement of the quality of the part can be effectively guaranteed. And to strengthen the appropriate material strength, the value of KU should be adjusted and optimized in an all-round way, and finally the appropriate processing and production method should be selected.
Estimation Of Optimization Effect Of CNC Machining Process For Thin-walled Parts
1. Effectively control the deformation of parts
Combined with the current actual situation, in the process of implementing CNC machining of thin-walled parts, the machining design should be carried out according to the actual design requirements, as shown in Figure 1. First, roughing should be done, then by semi-finishing, and finally finishing. On the basis of the implementation of processing, the surface control should be carried out first, and it should be optimized as much as possible on the original basis. However, in the construction process of blank parts, it is believed that the interior is affected by the external environment, and with the addition of heat treatment, it is easy to deform the current parts, which ultimately affects the actual size and design quality of CNC machining of thin-walled parts. Since the degree of wall thickness is constantly changing, its rigid structure cannot meet the actual production needs, so its own guidance will change to some extent. In the continuous reduction of wall thickness, cutting vibration is caused, and finally the actual product size cannot meet the actual design requirements, and its core surface cannot be guaranteed. The CNC machining process mainly depends on the actual design parameters and clear scientific processing methods, but due to external influences and various factors, it often directly leads to the gradual increase in the processing difficulty, the product quality cannot meet the actual production design requirements, and finally achieves the accuracy and expected production accuracy. The gap is large and cannot withstand the established clamping force, resulting in deformation, resulting in low quality CNC machining of thin-walled parts.
2. Fully optimize the process effect
In order to comprehensively improve the quality of the process, it is necessary to optimize the technology from the two aspects of the process improvement plan and the improvement of the processing method, so as to improve the process quality comprehensively.
(1) Process improvement plan.
Combined with the current actual design needs, in the process of completing the CNC machining of thin-walled parts, the entire end face should be roughly milled first, and then the initial machining should be completed by heat treatment. Take the following measures: Change the radial clamping force to axial compression, so that the parts are only affected by the axial force and not the radial force, which greatly reduces the clamping deformation of the parts. After the initial processing is completed, the processing should be carried out by means of heat removal, and finally the finishing is completed. In the process of finishing, the allowance should be arranged and managed in advance to effectively avoid many construction methods that cannot be implemented according to the established processing requirements due to the allowance factor, and reduce the related problems such as the inner circle design form that cannot be corrected due to the small allowance.
(2) Improve the processing method.
In order to ensure that the actual state of the hole can be within the designer’s control, in the finishing process, the light knife operation technology should also be used as much as possible to improve the quality of CNC machining as much as possible to ensure the machining effect. In order to improve the processing method, the operator is required to select targeted machine processing on the basis of the actual part processing to ensure the processing strength, to achieve the stability of the processed parts as much as possible, and to ensure that the materials used at this stage meet the established work requirements. , reduce damage to parts caused by damage to processing equipment.
By analyzing the actual situation of CNC machining of thin-walled parts in my country, combined with the actual effect of technological transformation, only by optimizing the CNC machining of thin-walled parts, can the machining quality be effectively improved, the vibration lines, deformation and other problems can be reduced, and the actual size and surface of the product can be effectively guaranteed. Roughness meets current design management requirements. Through the effective analysis and research of the results of the relevant cases, not only the analysis and optimization should be carried out in combination with the actual production experience, but also the different problems caused by different processing methods should be proposed to ensure that the processing quality is not limited by the production experience as much as possible, and finally the thin-walled parts CNC machining quality damage. Therefore, only by continuously strengthening the quality of CNC machining simulation analysis and improving the machining method in an effective way, can the machining quality be improved as much as possible and ensure all controllable machining quality.