Single-scraper bidirectional powder-paving device for melting forming of laser selection area and method

Abstract

The invention relates to a single-scraper bidirectional powder-paving device and method for melting forming of a laser selection area. The structure is simple, the powder-paving efficiency is high, the powder-paving efficiency is guaranteed and the powder cleaning and maintenance are more convenient. The device comprises a forming platform, a left powder-conveying cabin, a right powder-conveying cabin and a powder paving slot; the powder paving slot comprises a slot tank, a scraper, a baffle and a reversing plate; a left reversing jacking pin and a right reversing jacking pin for driving the reversing plate to rotate and reverse are respectively arranged on the two sides of the forming platform; in a reversing process, the left reversing jacking pin or the right reversing jacking pin is incontact with the reversing plate before the powder paving slot moves to the left powder-conveying cabin or the right powder-conveying cabin, and besides, the rotation of the baffle under the drivingof the reversing plate is completed when the powder paving slot moves to the position under the powder-conveying cabin. According to the bidirectional powder-paving method provided by the invention, the bidirectional powder-paving device is utilized to complete the powder throwing in the melting forming process of the laser selection area, the powder paving operation is immediately performed afterthe melting forming of the laser selection area, the route is not wasted, the working time is not wasted, the comprehensive arrangement for the powder-paving and forming operations is realized and the efficiency is higher.

Description

technical field [0001] The invention relates to the technical field of additive manufacturing equipment, in particular to a single scraper two-way powder spreading device and method for laser selective melting and forming. Background technique [0002] With the continuous strengthening of basic research on laser melting technology, the additive manufacturing process has been widely used in recent years, especially the selective laser melting (SLM) process, which has been widely used in industrial applications due to its advantages in manufacturing complex structural components. recognized. The development of equipment using the laser selective melting forming process is also developing rapidly. The equipment has a variety of structures and the forming principle is basically the same. The layered data converted from the three-dimensional model is controlled by a computer to achieve layer-by-layer laser selective sintering of metal powder. Finally, the processing of three-dim...

AI Technical Summary

Problems solved by technology

At present, there are many such powder spreading devices, which realize that the powder can be located on both sides of the scraper when the powder is spread back and forth, but the structure of most of the devices is relatively complicated, and it is difficult to clean the powder or maintain it.

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