Magnetic controlled polar coordinates 3D printer

Abstract

The invention discloses a magnetic controlled polar coordinates 3D printer. Polar coordinates positioning is adopted, a system is built by taking the center of the magnetic ring as a pole, so that theprogram is greatly simplified, and meanwhile, the influence of the complicated joint type program and the unstable structure of a cantilever beam is overcome; a photoelectric sensor is adopted, the polar angle displacement is measured in real time and is fed back to a control end, closed-loop control is achieved, not only contour distortion is eliminated, but also precision and stability are greatly improved. According to the device, a synchronous belt and a screw rod are used for lifting motion of Z-axis which motioned very slow in a driving mode, the motion of the two-dimensional plane is converted into a silent contact motion directly controlled by magnetic force; meanwhile, an upward force-dividing force exists between electric magnetic poles and permanent magnetic poles, most of thegravity of the permanent magnet inner ring is counteracted, the gravity of the permanent magnet inner ring is close to the suspension, and the pressure of the lower electric magnetic outer ring is very small, the contact part is designed by adopting balls and sliding grooves, and lubricating oil is added to form an oil film, the noise is reduced to the minimum; compared with a traditional printer,the noise is greatly reduced.

Description

technical field [0001] The invention relates to a three-dimensional printer, in particular to a magnetron polar coordinate 3D printer. Background technique [0002] Existing 3D printers are mainly divided into rectangular coordinate 3D printers and polar coordinate 3D printers. Most of the current 3D printers use the three-dimensional rapid prototyping technology under the rectangular coordinate system. The working principle of rapid prototyping technology is to complete the manufacturing of solid prototypes layer by layer. Specifically, according to the printing model designed by 3D CAD, the 3D solid model is discretized, and the "bottom-up" material accumulation method is used to manufacture the solid Print the object and get the three-dimensional shape required for processing. [0003] Cartesian coordinate system printers have rectangular box type and delta type. The printing head is driven by the screw and the timing belt respectively, and the scanning and printing are ...

AI Technical Summary

Problems solved by technology

[0006] Purpose of the invention: The purpose of the present invention is to provide a magnetically controlled polar coordinate 3D printer to solve the problems of slow printing speed, high noise, low precision and instability of existing 3D printers

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