Method for dividing flow channel space for processing of blisks
A technology of space division and integral blisk, which is applied in metal processing equipment, manufacturing tools, milling machine equipment details, etc., can solve the problem that there is no overall blisk flow channel, increase the cost of blisk 3+2 axis processing, and restrict the overall blisk 3+2 axis processing efficiency and other issues, to achieve the effect of improving service life, reducing the number of times of reversing, and reducing vibration
Active Publication Date: 2019-04-05
AVIC BEIJING AERONAUTICAL MFG TECH RES INST
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[0007] At present, there is no corresponding method for dividing the flow channel space of the blisk, which restricts the efficiency of the 3+2 axis machining of the blisk and increases the cost of the 3+2 axis machining of the blisk
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[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0036] The present invention provides a flow channel space division method for integral blisk processing, the main idea of which is:
[0037] The points in each subspace have a common feasible region of the tool axis vector through reasonable division of the machining space, and then the geometric model is established, which will be used as the blank model to generate the machining trajectory of the fixed axis cavity milling.
[0038] This method can improve...
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The invention discloses a method for dividing flow channel space for processing of blisks. The method comprises the following steps of firstly, constructing a geometric model of the flow channel space, and performing projection to standard parameter space; performing point discretization on the geometric model of the flow channel space, and establishing a cutter shaft vector feasible region of each discrete point corresponding to a certain processing cutter; according to the position of each discrete point and the corresponding cutter shaft vector feasible region, performing iterative divisionon the discrete points, until each divided point set of each discrete point has a public cutter shaft vector feasible region; and using a geometric surrounding body constructed by each discrete pointset as a solid model for generating the processing track. The method disclosed by the invention is especially used for the generating process of 3+2 shaft processing knife orbits of the flow channelspace of the blisks, and is used for generating a milling orbit of a mold cavity for processing the region. Through the adoption of the method disclosed by the invention, the programming efficiency ofrough processing of the flow channel space of the blisks and the practicality of the knife orbits can be improved, the processing efficiency of the rough processing course of the blisks can be improved by the generated knife orbits, and the processing cost of numerical control milling of the blisks is reduced.
Description
technical field [0001] The invention relates to the technical field of integral blisk processing, in particular to a flow channel space division method for integral blisk processing. Background technique [0002] Due to the complex flow space of the overall blisk, 5-coordinate machine tools are usually used in CNC rough milling. There are two main methods: five-axis rough milling and 3+2 axis rough milling. [0003] In the 5-axis simultaneous rough machining of the overall blisk flow channel space, methods such as boundary offset method can be used to calculate the tool path; in the 3+2 axis rough machining of the overall blisk, it is necessary to manually separate different areas and use offset The machining trajectory is generated in the same way, and the angle head is installed on the traditional 3-axis machine tool to carry out the rough milling of the parts, and different tool axis vectors are used for different areas. [0004] In the current 3+2-axis rough milling pro...
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IPC IPC(8): B23C3/18
CPCB23C3/18
Inventor 朱燏肖世宏王文理丁悦
Owner AVIC BEIJING AERONAUTICAL MFG TECH RES INST