Tool Axis Vector Optimization Method for Multi-Axis NC Machining Based on Forced Deformation of Tool
A tool axis vector, force deformation technology, applied in program control, computer control, general control system, etc., can solve problems such as rigidity characteristics of process system only considering geometric constraints
Active Publication Date: 2019-12-10
泸州翰飞航天科技发展有限责任公司
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Problems solved by technology
The existing multi-axis CNC machining tool axis vector planning only considers the geometric constraints and the stiffness characteristics of the process system
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[0036] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0037] Such as figure 1 As shown, a multi-axis CNC machining tool axis vector optimization method based on tool force deformation includes the following steps:
[0038] 1) Tool-related parameter collection, the parameters include the overhang length L of the tool bar part s , the length L of the tooth portion of the tool f , the effective diameter of the cutter tooth part and the diameter D eand D, the elastic modulus E of the tool material, the moment of inertia I of the tool bar part; the design surface data information (curved surface after processing) of the workpiece, the rough surface data information (curved surfa...
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The invention discloses a multi-axis numerical control machining tool axis vector optimization method based on the force deformation of the tool, comprising the following steps: 1) parameter collection; 2) according to the cutting force and the stiffness of the multi-axis numerical control equipment process system Establish the force deformation model of the tool in the process of multi-axis NC machining; 3) Determine whether the model satisfies the constraint conditions; 4) According to the force deformation model and constraint conditions of the tool, with the goal of minimizing the force deformation of the tool, establish the tool axis Vector optimization mathematical model; 5) solve the above tool axis vector optimization mathematical model to determine the optimal tool axis vector V c,opt 6) Convert the tool rake angle and side inclination angle to the tool axis vector to obtain the optimized tool axis vector. The invention makes up for the deficiency that the existing multi-axis numerical control machining tool axis vector planning only considers the geometric constraints and the stiffness characteristics of the process system, and provides a new idea for complex curved surface multi-axis numerical control machining tool axis vector planning.
Description
technical field [0001] The invention relates to numerical control machining machine tool technology, in particular to a multi-axis numerical control machining tool axis vector optimization method based on force deformation of the tool. Background technique [0002] Complex surface parts are widely used in aerospace, energy and power fields, and are generally processed by multi-axis CNC machining equipment. In the process of NC machining of complex curved surfaces, good contact between the tool and the surface to be processed is one of the key factors to ensure the quality of part processing. Ideally, the direction of the tool axis vector should be consistent with the normal direction at the processing point of the curved surface. The appearance of the rotation axis of the multi-axis CNC machine tool enables the tool to move relative to the workpiece in three-dimensional space. The tool axis swings continuously relative to the surface of the workpiece. By adjusting the heel a...
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IPC IPC(8): G05B19/404
CPCG05B19/404G05B2219/37087G05B2219/37355G05B2219/37397
Inventor 段现银彭芳瑜闫蓉蒋国璋周敏
Owner 泸州翰飞航天科技发展有限责任公司