Numerical control elbow machining simulation method and device

Abstract

The invention provides a numerical control elbow machining simulation method which comprises the steps of establishing a geometric model of a numerical control tube bending machine; establishing a mechanical model of the numerical control tube bending machine according to the geometric model, wherein the mechanical model is a mathematical equation including the motion feature information of the numerical control tube bending machine; establishing an allocation model including the performance parameter information of the numerical control tube bending machine; establishing a mechanism kinematics model including the positions and postures of the numerical control tube bending machine according to the mechanical model and the allocation model; solving the mechanism kinematics model to determine the positions and the postures of the numerical control tube bending machine in a machining process; simulating a numerical control tube bending machining process according to the positions and the postures of the numerical control tube bending machine in the machining process and the data control information of elbows to be machined. According to the technical scheme, the modeling process is simple, the generality of motion laws and characteristics of the performance parameters of the numerical control tube bending machine can be described, and thus high generality is achieved.

Description

technical field [0001] The invention relates to the field of mechanical engineering, in particular to a numerically controlled pipe bending simulation method and device. Background technique [0002] Elbows are widely used in complex products such as missiles, launch vehicles, satellites and aircraft, and they transport fuel, hydraulic oil, gas and other working media. The bent pipe is subject to deformation and high-frequency vibration in working condition, as well as the impact and pulsation of the fluid in the pipe, and part of it is also affected by high pressure and temperature changes. Therefore, the bending pipe production process in complex products has strict requirements, and CNC pipe bending machines are usually used for processing. NC (Numerical Control, digital control, NC for short) program effectiveness. [0003] In the existing technology, the research on the simulation of CNC pipe bending process generally relies on specific projects, most of which are aim...

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Problems solved by technology

[0004] In order to solve the above technical problems, the present invention provides a numerical control pipe bending simulation method and device to solve the problems of cumbersome modeling process and poor versatility in the prior art

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