三坐標(biāo)龍門加工中心進(jìn)給傳動設(shè)計（含CAD圖紙和說明書）,坐標(biāo),龍門,加工,中心,進(jìn)給,傳動,設(shè)計,CAD,圖紙,說明書 摘要 我國生產(chǎn)的龍門加工中心和數(shù)控龍門鏜銑床產(chǎn)品的主要品種，根據(jù)機(jī)床結(jié)構(gòu)布局形式劃分為：按龍門架是否移動，分為龍門固定工作臺移動式和龍門移動式；按橫梁是否在立柱上運(yùn)動，分為動梁式和定梁式兩種；橫梁在高架床身上移動稱為高架式；按機(jī)床凈重和工作臺承載能力，分為輕型、中型和重型（超重型）等。 滾珠絲杠由于制造工藝已十分成熟，導(dǎo)程精度高、傳遞扭矩大，已成為標(biāo)的機(jī)床功能部件，因此在進(jìn)給傳動中應(yīng)用很普遍。滾珠絲杠螺母副由于在絲杠和螺母之間放人了滾珠，使絲杠與螺母間傳動變?yōu)闈L動摩擦，因而大大地減小了摩擦阻力，提高了傳動效率，并具有響應(yīng)靈敏度高、傳動快捷的特點。其傳動效率可達(dá)9O%以上。由于是滾動摩擦，動、靜摩擦因數(shù)相差極小，因此無論是靜止還是在低速和高速傳動時，摩擦轉(zhuǎn)矩變化不大。在使用滾珠絲杠傳動時，可以采用多種預(yù)加載荷的方法消除間隙，使反向時無空行程。 本次畢業(yè)論文中，對數(shù)控機(jī)床的進(jìn)給系統(tǒng)進(jìn)行了設(shè)計，運(yùn)用了滾珠絲杠螺母副的進(jìn)給方式。對滾珠絲杠螺母副的選型和計算有詳細(xì)的介紹，同時也包括交流伺服電機(jī)的選型等。并對數(shù)控機(jī)床的總體布局進(jìn)行了設(shè)計。 關(guān)鍵詞：數(shù)控機(jī)床 龍門加工中心 進(jìn)給系統(tǒng) 滾珠絲杠 伺服電機(jī) 選擇計算 Abstrsct Our production of nc machining center and longmen longmen boring and milling machine main varieties of products, according to the structure arrangement forms into: according to whether move into the frame which is fabricated according to fixed workbench mobile and longmen longmen mobile, According to whether the crossbar column in motion, divided into fixed beam and beam type two kinds, In the overhead beams GaoJiaShi called upon the bed movement, Press machine net and workbench bearing capacity, light, medium and heavy (super-heavy), etc. The ball screw due to the manufacturing process has been very mature, high precision, lead, and has become a big torque machine parts, thus subject to drive in the application is very common. The ball screw nut pair in the ball screw and nut due to the ball, placed between ball screw and nut to drive into the rolling friction between, thus greatly reduced friction resistance and improve the transmission efficiency and high sensitivity, drive fast response characteristics. The transmission efficiency can reach 9O % above. The rolling friction is due, and are, therefore, whether very factors (or in low and high-speed transmission, friction torque. In using andball bearing, can use multiple preload super method to eliminate clearances, reverse when empty. The graduation thesis of the CNC system into the design, use a ball screw nut pair of feeding. On the ball screw nut pair of selection and calculation have detailed introduction, also including ac servo motor selection, etc. And the general layout of nc machine tools on the design. Keywords: CNC processing center Feeding system The ball screw Selection