Control method for separating solid model from resin tank during bottom projection photocuring molding

Abstract

The invention provides a control method for separating a solid model from a resin tank during bottom projection photocuring molding. The control method specifically comprises the following steps that a threshold value sequence set is preset, the threshold value sequence set includes a plurality of sequences corresponding to control modes, and sequence values in each sequence correspond to parameter values needing to be set in the same control mode; (2) in the projection process, a stripping coefficient Qx corresponding to the solid model formed by irradiating a current projected image is acquired and is matched with the sequence values in the threshold value sequence set in the step (1) so as to select one control mode for controlling a working platform to ascend and descend and / or a separation mechanism to move, so that the solid model is disengaged from the resin tank; and (3) the step (2) is repeated until the solid model is completed. By means of the control method, self-adaptive control over separation of the solid model and the resin tank is realized; different solid model and resin tank separation methods can be selected according to different projected images; the separation effect is good, and the situation that the service life of the resin tank is shortened due to multiple times of separation is avoided.

Description

technical field [0001] The invention relates to photocuring rapid prototyping technology, in particular to a control method for separating solid modeling from a resin tank in bottom projection photocuring molding. Background technique [0002] The basic working process of the bottom projection digital light processing rapid prototyping system is as follows: first, the lifting motor drives the lifting shaft to drive the working platform back to zero position, ensuring that there is a suitable gap between the bottom surface of the working platform and the bottom surface of the resin tank, and then the light source is controlled by the computer. Drop it on the bottom of the resin tank to solidify the liquid photosensitive resin at the bottom of the resin container and firmly adsorb it to the working platform. Then the working platform rises to a layer thickness height, and the imaging projection device projects again to solidify the bottom liquid resin and make it thinner than t...

AI Technical Summary

Problems solved by technology

[0007] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a control method for the separation of the solid shape and the resin tank in the bottom projection type rapid prototyping, which is used to solve the short service life of the resin tank in the prior art, the solid shape and the The problem of slow resin tank separation speed

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