Three-dimensional (3D) printing head control system based on field programmable gate array (FPGA)

Abstract

The invention belongs to the field of three-dimensional (3D) printing head control systems, and particularly relates to a 3D printing head control system based on a field programmable gate array (FPGA). The 3D printing head control system based on the FPGA is characterized by comprising a control plate, four adapter plates connected with the control plate, and a drive plate connected with the control plate, wherein the control plate comprises a microcomputer unit FPGA core plate I, an ARM control unit, a DC-DC power converter, a grating encoder interface and four ways of RS422 transmission circuits; the drive plate comprises a micro-control unit FPGA core plate II, a serial communication circuit, a DC-DC power converter and four ways of ignition pulse generation circuits; and each adapter plate comprises a printing data output interface and five ways of printing head interfaces. The 3D printing head control system based on the FPGA provided by the invention can realize accurate printing control on 20 printing heads, is simple in wiring, reasonable in structure, rich in functions, high in reliability, capable of realizing long-time continuous printing and re-transmitting a printing state to an upper computer, and capable of realizing a function on interaction with external man-machine, and has a high antijamming capability.

Description

technical field [0001] The invention belongs to the field of 3D printing head control systems, in particular to an FPGA-based 3D printing head control system. Background technique [0002] 3D printing is the manufacturing process of building printed layers to make three-dimensional solids from digital models. As the printhead passes over the sand, the binder is selectively jetted into the powder, and the sandbox bed sinks and is coated with another layer of powder, repeating the process until the entire print is complete. The print head is one of the key components of 3D printing. The control accuracy and effect of 3D printing are determined by the print head control system. The print head control system controls printing by receiving position signals, if the printing position is inaccurate, the printing shape will change. The print head control system calculates the travel speed of the print head by receiving the position signal. When the print head moves at a variable s...

AI Technical Summary

Problems solved by technology

Because the print head control has high requirements on timing and synchronization, the existing scheme is prone to print data loss, error or out-of-synchronization.

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