圓孔拉刀在CAD系統(tǒng)中拉刀工作部分設(shè)計(jì)模塊、校核模塊設(shè)計(jì) 畢業(yè)論文，論文都通過學(xué)校答辯

圓孔拉刀CAD系統(tǒng)中拉刀工作部分設(shè)計(jì)模塊、校核模塊設(shè)計(jì)

　　　　
摘要：拉刀的結(jié)構(gòu)復(fù)雜，數(shù)據(jù)繁多，普通的設(shè)計(jì)方法存在重復(fù)性勞動(dòng)，標(biāo)準(zhǔn)程度低、周期長(zhǎng)等缺點(diǎn)，所以用CAD設(shè)計(jì)拉刀具有重要意義。
　　　本文主要是用VBA對(duì)AutoCAD進(jìn)行二次開發(fā)。首先選擇分層式拉刀，再選擇出容屑槽的形狀和種類，其中容屑系數(shù)K與被拉削的材料和切削厚度有關(guān)。不同的材料和厚度會(huì)造成K值的不同。接著輸入數(shù)據(jù)，用公式計(jì)算出切削余量。保證加工表面達(dá)到規(guī)定的尺寸精度和表面質(zhì)量、拉刀有高的耐用度和壽命和拉刀的高生產(chǎn)率。再對(duì)拉刀分屑槽進(jìn)行設(shè)計(jì)，分別用公式計(jì)算出分屑槽寬、分屑槽的個(gè)數(shù)。然后就是拉刀的校核模塊，計(jì)算出同時(shí)工作齒數(shù)，拉刀同時(shí)工作齒數(shù)最好介于3-7之間保證同時(shí)工作齒數(shù)在3-8齒以內(nèi)。同時(shí)工作齒數(shù)大于8時(shí)，會(huì)使冷卻潤(rùn)滑不充分，易使拉刀刀磨損或拉刀折斷。最后校核拉刀強(qiáng)度和拉床拉力，當(dāng)拉刀直徑叫較大時(shí)，拉刀強(qiáng)度較大，使用時(shí)通常不用驗(yàn)算強(qiáng)度。當(dāng)拉刀直徑較小，使用條件改變時(shí)，應(yīng)按計(jì)算公式進(jìn)行強(qiáng)度驗(yàn)算。為了保證拉刀正常工作，拉刀危險(xiǎn)斷面初的應(yīng)力必須小于拉刀材料的許用應(yīng)力。其中計(jì)算所得到的拉削力，必須小于拉床的實(shí)際拉力。輸出校核結(jié)果。通過以上結(jié)果表明使用CAD設(shè)計(jì)拉刀可以提高拉刀的質(zhì)量。

關(guān)鍵詞：拉刀；AutoCAD；VBA；校核；

Hole Broach Broach CAD Work System Design Module And Check Module Design
Student name:zhou zicheng         class:0580224
         Supervisor:wang youyuan
ABSTRUCT：The broach structure is complicated , the data is numerous, physical labour there existing a repetitiveness in average design procedures, standard degree is low , the period often waits for a shortcoming , the broach has importance therefore using CAD to design that.
　　　This article is mainly used for VBA for AutoCAD second development. Broach choosing style with layers first, among them, the form holding the crumbs slot and kind choosing out again, hold crumbs modulus K and the material being broached and cut thickness in relation to. Different material and thickness diversity that can bring about K value. Proceed to import a data , use formula to secretly scheme against out the cutting margin. Ensure that the mass , broach processing the dimension accuracy and surface reaching regulation outside have high durable degree and life-span and pull the knife high production rate. Mark of crumbs slot carries out design on the broach again , uses formula to calculate out the number being allotted crumbs slot width , being allotted the crumbs slot respectively. And then it is a broach's to proofread a module, the guarantee at the same time job tooth calculating out the at the same time job tooth number , the broach at the same time job tooth number being situated between 3-7 best counts within 3-8 teeth. At the same time job tooth number greater than may use the lubricating insufficiency cooling down at 8 o'clock, the broach easy to make wears away or the broach breaks off. Proofread the broach intensity and broaching machine pulling force finally , think that the broach diameter shouts when bigger, the broach intensity is bigger , disuse the checking calculation intensity generally when being put into use. When thinking that the broach diameter is less , service conditions changes, respond to the checking calculation carrying out an intensity according to the formula secretly scheming against. Work for ensuring that the broach is regular.

Keyword:broach  AutoCAD  VBA  checking

目錄
1緒論 1
2開發(fā)工具的選擇 1
2.1AutoCAD簡(jiǎn)介 1
2.2AutoCAD的新特性 3
2.3VBA的簡(jiǎn)介 3
2.4AUTOCAD二次開發(fā)語言及工具介紹 4
2.5VBA開發(fā)CAD的簡(jiǎn)介及選擇VBA開發(fā)CAD的原因 5
3圓孔拉刀工作部分CAD系統(tǒng)的設(shè)計(jì) 6
3.1圓孔拉刀工作部分CAD系統(tǒng)設(shè)計(jì)的流程框架 6
3.2拉刀設(shè)計(jì)模塊的系統(tǒng)構(gòu)成圖 7
3.3拉刀設(shè)計(jì)模塊和校核模塊 7
3.3.8標(biāo)題欄的填寫 12
3.4 拉刀的校核模塊 18
4應(yīng)用舉例 21
5小結(jié) 22
參考文獻(xiàn) 23
致謝 24