數(shù)控加工中心刀具庫(kù)控制

①頁(yè)數(shù) 23
②字?jǐn)?shù) 4413
③摘要
摘 要：
因原有的刀具庫(kù)控制方式過于陳舊、功能過于單一且智能度不高，刀盤只能單向轉(zhuǎn)動(dòng)，效率較低并且指示燈設(shè)計(jì)不合理，對(duì)刀成功后沒有正確與否的提示。針對(duì)原有功能的的不足提出自己的改進(jìn)方法。對(duì)位成功的進(jìn)行指示燈閃爍提示，調(diào)取不是當(dāng)前工位的刀時(shí)，系統(tǒng)能根據(jù)調(diào)取刀號(hào)的大小自動(dòng)選擇最佳刀盤轉(zhuǎn)動(dòng)方向，以提高取刀效率。
該論文就怎樣利用PLC來控制數(shù)控加工中心刀具庫(kù)進(jìn)行了調(diào)查，對(duì)其中軟件設(shè)計(jì)、硬件設(shè)計(jì)等問題進(jìn)行了分析和研究，實(shí)現(xiàn)了對(duì)數(shù)控中心刀具的控制。
我選用的是西門子ST7來實(shí)現(xiàn)數(shù)控加工中心刀具庫(kù)換刀功能[1]。換刀的具體實(shí)現(xiàn)要求：數(shù)控加工中心的刀庫(kù)在工件加工過程中，需根據(jù)加工工藝要求進(jìn)行自動(dòng)換刀，刀庫(kù)中存放10把刀具供加工時(shí)選用。數(shù)控加工中心的換刀一般采用兩種控制方式，即固定存放換刀控制和隨機(jī)存取換刀控制。在固定存取換刀控制中，刀庫(kù)中各刀具的位置是固定的，刀具選擇指令是以刀套編號(hào)為存取地址來控制存取動(dòng)作，即原來從哪一刀套編號(hào)中取出來的刀具，在使用完畢后仍歸還到那一刀套中。而隨機(jī)換刀控制中，還刀位置是隨機(jī)的，刀具選擇指令與刀套編號(hào)無關(guān)，指令僅以刀具自身的直接編號(hào)為目標(biāo)。這種換刀方式在新刀具取出后，刀庫(kù)不需轉(zhuǎn)動(dòng)，立即隨機(jī)存入原先的刀具，即換刀、存刀一次完成，縮短了換刀時(shí)間.
Abstract:
Tool Library for the original control method is too old or too feature a single, intelligent degree is not high, the cutter can only be a one-way rotation, and less efficient and light design unreasonable, after the success of the knife there is no right or wrong advice. Less than for the original function put forward its own improved method. Counterpoint to the success of light flashing prompt retrieva l of the knife than the current station, the system retrieved a knife according to the size of the numbers automatically choose the best cutter rotation direction in order to improve
the efficiency of taking out knives.
The paper on how to use PLC to control the CNC Machining Center Tool Library conducted a survey, of which software design, hardware design issues such as the analysis and study of numerical control center tools to achieve control.
I have chosen to achieve the ST7 Siemens CNC Machining Center Tool Library ATC
functions. A concrete realization of tool changing requirements: CNC machining center tool library workpiece processing, must be in accordance the requirements of processing technology Automatic Tool Changer, knives stored in database 10 when the choice of tools for processing. CNC machining center with ATC generally use two kinds of control mode, namely, fixed control and random access storage ATC ATC control. ATC in the fixed access control, tool magazine of each tool position is fixed, the tool selection command is a tool pocket number to access the address to control access to actions, that is, where the original number of knife sets knives taken out ,After using the knife sets of remains returned to go there. Randomly ATC control, but also a knife position is random, tool selection instruction and tool pocket numbers unrelated to the direct instruction only tool their own numbers as the goal. This way the new ATC tool removed, the tool magazine without turning to immediately randomly deposited in the original tool, that tool changing, keeping a knife in one step, shortening the tool change time

④目錄
目 錄

緒論 2
1、本系統(tǒng)硬件接線 3
1.1 電機(jī)主接線圖 3
1.2 PLC外接線圖 4
2、I/O配置 5
2.1 I/O配置表 5
3、刀具庫(kù)刀盤取刀示意圖 6
3.1機(jī)械手與調(diào)取刀具示意圖 6
4、本系統(tǒng)梯形圖設(shè)計(jì) 7
4.1 軟件流程圖 7
4.2順序功能圖 8
4.3 系統(tǒng)梯形圖 9
4．4 系統(tǒng)指令表 12
4.5 系統(tǒng)詳細(xì)工作原理 17
5、結(jié)論 18
參考文獻(xiàn) 18
致謝 19


⑤關(guān)鍵字
PLC，控制，換刀，工位
PLC; control,;tool changing; station,

⑥參考文獻(xiàn)
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