Intelligent rapid formation flow control method based on line width measurement

A flow control and line width technology, which is applied in the field of intelligently improving the quality of deposition manufacturing, one of the rapid prototyping methods, can solve the problems of solid model preparation errors, extrusion material volume or material volume per unit time that cannot be adjusted in real time Problems such as correction and affecting precision can be improved to improve forming precision, facilitate accurate installation and reduce collapse

Active Publication Date: 2013-07-24
HANGZHOU DIANZI UNIV
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Problems solved by technology

[0003] However, in the process of preparing the solid model, the flow rate of the slurry ejected from the nozzle is currently under open-loop control. When the speed of the forming mechanism fluctuates during the preparation process, the volume of the extruded material or the amount of material per unit time cannot be real-time. Adjustment and correction, and then there will be errors in the preparation of the solid model, which will affect the accuracy

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  • Intelligent rapid formation flow control method based on line width measurement
  • Intelligent rapid formation flow control method based on line width measurement
  • Intelligent rapid formation flow control method based on line width measurement

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Embodiment Construction

[0016] The present invention will be further described below in conjunction with accompanying drawing.

[0017]

[0018] Such as figure 2 As shown, the control flow of the present invention is as follows.

[0019] Step 1. The slurry extruded by the nozzle is on the workbench of the forming equipment. The linear CCD sensor installed on the nozzle detects the preliminary image of the line width of the extruded material in deposition manufacturing, and processes the obtained image according to the gray value. Get a better quality image, and calculate the line width of the extruded slurry during the movement of the worktable according to the resolution of the CCD;

[0020] Step 2. Send the calculated line width value into the register of the microcontroller, compare it with the preset standard line width value (0.3mm), and calculate the deviation;

[0021] Step 3. If the actual line width is smaller than the standard line width and the absolute value of the difference is gre...

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Abstract

The invention relates to an intelligent rapid formation flow control method based on a line width measurement. The existing method rebuilds the appearances of auriclea and original ears or has large colour and luster difference, so that a wearing effect is influenced. The intelligent rapid formation flow control method provided by the invention comprises the following steps of: detecting line width of an extrusion material in deposition manufacture through a sensor, sending the obtained data to a singlechip so as to compare the data with preset reference data, thus obtaining a deviation, and finally, controlling a scanning motion motor according to the preset judgement standard. The intelligent rapid formation flow control method provided by the invention can reduce collapse caused by insufficient flow and excessive pile caused by large flow, so that the precision and surface quality of a formed piece are greatly improved.

Description

technical field [0001] The invention belongs to the fields of automatic detection and control technology, biomedical engineering and rapid prototyping, and relates to a control method for intelligently improving deposition manufacturing quality, one of the rapid prototyping methods. Background technique [0002] Rapid prototyping equipment is to prepare a three-dimensional digital model into a three-dimensional solid model. The slurry for preparing the solid model is sent into the silo, sprayed out by the nozzle, and piled up according to the planned trajectory of the software to form a three-dimensional three-dimensional support described by the data model. [0003] However, in the process of preparing the solid model, the flow rate of the slurry ejected from the nozzle is currently under open-loop control. When the speed of the forming mechanism fluctuates during the preparation process, the volume of the extruded material or the amount of material per unit time cannot be ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C67/00
Inventor 史廷春王瑞艳张毅
Owner HANGZHOU DIANZI UNIV
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