發(fā)布時(shí)間：2018-08-04 10:18

【摘要】：伴隨國內(nèi)制造業(yè)的轉(zhuǎn)型,激光技術(shù)開始應(yīng)用于工業(yè)制造領(lǐng)域。激光燒結(jié)快速成型設(shè)備也在迅速的發(fā)展壯大,為零件加工提出了新的解決方案。在復(fù)雜零件的加工上優(yōu)勢(shì)更加明顯。本課題針對(duì)現(xiàn)有激光燒結(jié)快速成型設(shè)備的控制成本高,與傳統(tǒng)數(shù)控加工設(shè)備兼容性低等不足。從降低設(shè)備的控制成本的角度出發(fā),設(shè)計(jì)了以Arduino為控制核心的低成本激光燒結(jié)控制系統(tǒng),詳細(xì)敘述了控制系統(tǒng)的硬件搭建方法,并對(duì)鋪粉模塊進(jìn)行了優(yōu)化設(shè)計(jì),對(duì)控制系統(tǒng)算法進(jìn)行了研究及軟件設(shè)計(jì)。本文的主要研究?jī)?nèi)容如下包括:對(duì)激光燒結(jié)快速成型設(shè)備控制系統(tǒng)進(jìn)行了總體設(shè)計(jì)。提出了設(shè)備硬件的構(gòu)成方法,以及下位機(jī)軟件實(shí)現(xiàn)的任務(wù)和程序結(jié)構(gòu)的規(guī)劃。完成了激光燒結(jié)快速成型設(shè)備硬件電路設(shè)計(jì)與搭建,提出了一種低成本的控制系統(tǒng)解決方案。其主要包括USB通訊模塊簡(jiǎn)化設(shè)計(jì)、控制芯片低成本選型及其最小系統(tǒng)設(shè)計(jì)、對(duì)鋪粉模塊結(jié)構(gòu)與控制方式的低成本優(yōu)化設(shè)計(jì)、控制系統(tǒng)電源設(shè)計(jì)。并對(duì)激光燒結(jié)快速成型系統(tǒng)軟件進(jìn)行了設(shè)計(jì)與研究,設(shè)計(jì)了下位機(jī)的軟件任務(wù)包括:通訊任務(wù)、G代碼編譯任務(wù)、激光器控制任務(wù)、其它任務(wù)。將G代碼的解釋編譯工作移交給下位機(jī),針對(duì)設(shè)備的特殊結(jié)構(gòu)設(shè)計(jì)了對(duì)應(yīng)的G代碼編譯算法,通過軟件的設(shè)計(jì)降低了硬件的成本。驗(yàn)證了控制系統(tǒng)的穩(wěn)定性和加工時(shí)的重要參數(shù),本文通過對(duì)激光功率穩(wěn)定性測(cè)試、激光光斑運(yùn)動(dòng)速度測(cè)試、控制系統(tǒng)精度測(cè)試將測(cè)量數(shù)據(jù)與加工樣件對(duì)比驗(yàn)證了控制系統(tǒng)的功率與速度的同步控制,激光掃描與鋪粉的協(xié)調(diào)控制方案可行。通過本課題的研究,在滿足加工要求的同時(shí)有效降低了激光燒結(jié)快速成型設(shè)備的硬件成本。
[Abstract]:With the transformation of domestic manufacturing industry, laser technology began to be applied in the field of industrial manufacturing. Laser sintering rapid prototyping equipment is also developing rapidly, which provides a new solution for parts processing. In the complex parts of the processing advantage is more obvious. This paper aims at the disadvantages of high control cost and low compatibility with traditional NC machining equipment. In order to reduce the control cost of the equipment, a low cost laser sintering control system with Arduino as the control core is designed. The hardware construction method of the control system is described in detail, and the optimization design of the powder laying module is carried out. The algorithm of control system is studied and the software is designed. The main contents of this paper are as follows: the control system of laser sintering rapid prototyping equipment is designed. The construction method of the hardware of the equipment and the programming of the task and the program structure of the software of the lower computer are put forward. The hardware circuit of laser sintering rapid prototyping equipment is designed and built, and a low cost control system solution is proposed. It mainly includes the simplified design of the USB communication module, the low cost selection of the control chip and its minimum system design, the optimization of the structure and control mode of the powder laying module, and the design of the power supply of the control system. The software of laser sintering rapid prototyping system is designed and studied. The software tasks of the lower computer include: communication task code compiling task, laser control task, and other tasks. The interpretation and compilation of G code is transferred to the lower computer, and the corresponding G code compilation algorithm is designed for the special structure of the equipment, which reduces the cost of hardware through the design of software. The stability of the control system and the important parameters in machining are verified. The stability of laser power and the velocity of laser spot motion are tested in this paper. The precision test of the control system compared the measured data with the machining sample to verify the synchronous control of the power and speed of the control system. The coordinated control scheme of laser scanning and powder laying is feasible. Through the research of this subject, the hardware cost of laser sintering rapid prototyping equipment is reduced effectively.
【學(xué)位授予單位】：湖北工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TG665

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