Method for determining numerical control finish turning machining cutting parameters based on machining features
A technology of machining features and cutting parameters, applied in the direction of digital control, electrical program control, etc., can solve the problems of considering dynamic changes, reducing machining efficiency, tool workpiece and machine tool damage, etc., to optimize feed speed, improve machining accuracy, The effect of machine tool accuracy maintenance
Inactive Publication Date: 2013-02-13
SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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Problems solved by technology
(2) The tool gradually wears out during processing
Considering the above reasons, in order to ensure the safety of processing, CNC machine tool operators have no choice but to adopt the most conservative cutting parameters, which leads to a decrease in processing efficiency
On the contrary, in order to shorten the processing time, the CNC machine operator has to set larger processing parameters, which will lead to damage to the tool workpiece and the machine tool
If the dynamic changes in processing cannot be taken into account, the need to adjust cutting parameters in real time according to actual cutting conditions cannot be met.
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[0043] Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.
[0044] A method for determining cutting parameters in CNC finishing machining based on machining features, such as figure 1 shown, including the following steps:
[0045] Step 1. Analyze the tool path during the cutting process of the part;
[0046] Determine the machining features of the parts, including straight lines, oblique lines, convex arcs and concave arcs; mark the above machining features according to the geometric features of the parts; draw the tool path according to the machining requirements of the parts;
[0047] Such as figure 2As shown in Fig. 1, according to the design appearance of the part, the linear processing features, oblique line processing features, convex arc processing features, and concave arc processing features are respectively marked ①, ②, ③, ④, and then the tool path analysis is performed, and Draw the tool path diagr...
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The invention relates to a method for determining numerical control finish turning machining cutting parameters based on machining features, and belongs to the technical field of numerical control machining. The method comprises the following steps of: firstly, analyzing a feeding tool path of a cutting tool in the cutting process of parts; secondly, determining a feeding speed proportionality coefficient of the cutting tool in the cutting process of the parts; thirdly, calculating the feeding speed of the cutting tool under different machining features; and finally, adjusting the feeding speed of the cutting tool according to the calculated feeding speed on the basis of the feeding tool path of the original cutting tool. By the method, the problems that the machining process is out of control and the machining accuracy deviates, which cannot be solved by a lot of experiments and practical machining, can be effectively controlled and solved; by solving the material removal quantity and the cutting direction during the machining of different features, the machining data which is difficult to determine by experiments and practical machining is acquired, so that a technical support is provided for high-speed and high-efficiency finish turning machining of the parts; and by the method, the stability of the whole machining process of the whole machining area can be analyzed and predicted.
Description
technical field [0001] The invention belongs to the technical field of numerical control machining, and in particular relates to a method for determining cutting parameters of numerical control finishing machining based on machining characteristics. Background technique [0002] In the CNC finishing process, once the workpiece material, processing requirements, machine tools and cutting tools are determined, the choice of cutting amount and cutting fluid becomes the key to affect the objective function. Cutting parameters are the basic control quantity of CNC cutting. If the cutting parameters are not selected properly, it is not only difficult to ensure the machining accuracy of the workpiece and control the processing cost, but also the machine tool may be forced to stop due to excessive cutting force, which affects the normal performance of the CNC machine tool. [0003] From the current situation of the use of CNC machine tools in most enterprises, the choice of cutting ...
Claims
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IPC IPC(8): G05B19/18
Inventor 张森棠赵恒郑艳铭周金泉
Owner SHENYANG LIMING AERO-ENGINE GROUP CORPORATION