A beam type polar coordinate 3D printer

Abstract

The invention relates to a cross beam type polar coordinate 3D printer. The cross beam type polar coordinate 3D printer comprises a base, the left side and the right side of the base are each fixedly provided with a vertical shaft, and the left side and the right side of the base are each fixedly provided with a side motor; shafts of the side motors are each provided with a bolt rod through a coupler; the bolt rods are parallel to the vertical shafts on the corresponding sides, and a cross beam is jointly mounted on the upper portions of the vertical shafts and the upper portions of the bolt rods; a square through hole is formed in the left side of the cross beam, and a center hole is formed in the middle side of the cross beam; a bending part is mounted in the square through hole, and a first motor is mounted on the bending part; an angle driving wheel is connected to a shaft of the first motor, and a rotating shaft is mounted in the center hole; and an angle driven wheel is mounted on the lower portion of the rotating shaft in a key connection manner, and a first conveying belt is connected between the angle driving wheel and the angle driven wheel. Drawing of a complex curve arc is achieved, the printer has the beneficial effects that the printing speed is high, the precision of the size of a printed curve is high, and the surface quality is good, the automation degree is high, and the production efficiency can be greatly improved.

Description

technical field [0001] The invention relates to the technical field of three-dimensional additive manufacturing, in particular to a beam-type polar coordinate 3D printer. Background technique [0002] Normally, the movement of a Cartesian coordinate 3D printer in a plane basically depends on the rotation of the x and y axis motors. When moving a straight line, the plane coordinates can meet the requirements well, but it needs to move a circular trajectory. At the same time, the Cartesian coordinate system is basically completed by the difference method, which is to divide a circular arc into many straight lines to simulate the curve. Generally, it is completed by controlling the x and y directions of the motor, so the efficiency of executing circular arc segments is very low and the speed is very low. slow. But if the motion mechanism of polar coordinates is used, the polar diameter ρ can be fixed, and the θ rotation angle can be controlled to obtain a smooth arc-shaped tra...

AI Technical Summary

Problems solved by technology

This invention is also processed in the form of polar coordinates, which is conducive to printing rotary parts, but its Z-axis is controlled by a linear connecting rod, which cannot guarantee the accuracy of the Z-axis, and it is difficult to determine the direction of the consumables, and its movement cannot be calibrated at the beginning, and its Motion is also relative motion, programming control is more difficult

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