3D printer capable of achieving automatic leveling based on Hall principle and leveling method of 3D printer

Abstract

The invention discloses a 3D printer capable of achieving automatic leveling based on the Hall principle and a leveling method thereof. The 3D printer comprises a printing platform and a machine head, wherein the machine head comprises a shell and a printing component; a printing head is arranged at the bottom of the printing component; the shell fixes the printing component through an elastic piece; a Hall sensor is fixed to the top of the printing component; a magnet is fixed on the shell at the top side of the Hall sensor; and the Hall sensor and the magnet are located in the same vertical direction. The leveling method comprises the steps that N coordinate points are determined on the printing platform, the printing head is controlled to touch the N coordinate points of the printing platform in the Z-axis direction, the printing platform applies a counter-acting force to the printing head, the printing head is slightly deformed, and the distance between the magnet and the Hall sensor is slightly changed; and the Hall sensor senses the change, and printing compensation is conducted in the printing process. Automatic leveling of the 3D printer is achieved, manual leveling operation is not needed, the leveling precision is high, and operation is convenient and fast.

Description

technical field [0001] The invention relates to a printer and a leveling method thereof, in particular to a 3D printer and a leveling method thereof which realize automatic leveling based on the Hall principle. Background technique [0002] For existing FDM 3D printers, the printing platform needs to be flat (flatness less than 0.2mm), otherwise it will lead to poor printing effect and low printing success rate. Most of the existing leveling schemes are realized manually through mechanical structures. There will be the following problems: 1: There are many human factors and poor precision. 2: Restricted by the structure, it is inconvenient to operate. 3: Packaging and transportation will increase the flatness error of the platform. 4: The printing platform is a machined part, and the flatness itself has a certain error. 5: In the assembly process, there will be cumulative assembly errors when all parts are assembled. Therefore, developing a 3D printer that realizes auto...

AI Technical Summary

Problems solved by technology

There will be the following problems: 1: There are many human factors and poor accuracy

2: Restricted by the structure, it is inconvenient to operate

3: Packaging and transportation will increase the flatness error of the platform

4: The printing platform is a machined part, and the flatness itself has a certain error

5: In the assembly process, there will be cumulative assembly errors when all parts are assembled

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