【正文】 our country conventional machine is used widely. So if the machines are replaced, there is going to need a large money. In order to agree with the development of our economy, we can reform the conventional machines. The reformation of the tool movement: we demolish the current smooth leading, leading screw and installing stand. Then replace the ball leaking to the relevant position. The reformation of the horizontal mechanism: we make the horizontal ball lead screw instead of the conventional screw. And Stepper motor drives the screw. The overall master design: the spindle’ s gearshift of the CA6140 mechanism controlled by the former operating lever. The moving of the vertical table and the horizontal table is drove by the ball screw, which is drove by the Stepper motors. The last, we design the vertical and horizontal mechanism on the basis of known numbers.) KEY WORDS: tool movement， conventional machines， Stepper motor 2 目 錄 CJK6140 數(shù) 控 車 床 縱 向 進(jìn) 給 系 統(tǒng) 設(shè)計(jì) .................................................................................... 1 摘 要 ..................................................................................................................................... 1 ABSTRACT .......................................................................................................................... 2 第 一 部 分 緒 論 ................................................................................................................... 1 第二部分 設(shè) 計(jì) 方 案 的 確定 ................................................................................................. 3 數(shù)控系統(tǒng)運(yùn)動方式的確定 ..................................................................................... 3 伺服進(jìn)給系統(tǒng)的改造設(shè)計(jì) ..................................................................................... 3 數(shù)控系統(tǒng)的硬件電路設(shè)計(jì) ...................................................................................... 4 縱向進(jìn)給系統(tǒng)的設(shè)計(jì) ............................................................................................. 5 第三部分 機(jī) 械 設(shè) 計(jì) ....................................................................................................... 6 縱向進(jìn)給系統(tǒng)的設(shè)計(jì) ............................................................................................. 6 切削力的計(jì)算 ......................................................................................................... 6 滾珠絲杠的設(shè)計(jì)計(jì)算 ............................................................................................. 7 求軸向力 ....................................................................................................... 7 計(jì)算絲杠動載荷 Cj ...................................................................................... 7 絲杠效率計(jì)算 ............................................................................................... 8 校核 ............................................................................................................... 8 齒 輪 箱 減 速 器 設(shè) 計(jì) 部分 ......................................................................................... 9 傳動比 i ......................................................................................................... 9 齒面接觸強(qiáng)度設(shè)計(jì)計(jì)算 ............................................................................... 9 齒根彎曲強(qiáng)度設(shè)計(jì)： .................................................................................. 11 設(shè)計(jì)計(jì)算： ................................................................................................. 12 其他機(jī)械設(shè)計(jì)部分 ............................................................................................... 12 減速箱最小輸出軸的計(jì)算 ......................................................................... 12 軸承的選擇 ................................................................................................. 13 步進(jìn)電機(jī)的選擇 ................................................................................................... 13 計(jì)算減速器的傳動比 I ............................................................................... 13 計(jì)算系統(tǒng)轉(zhuǎn)動慣量 ...................................................................................... 13 確定步進(jìn)電機(jī)動力參數(shù) ............................................................................. 14 第四部分 數(shù)控設(shè)計(jì) ........................................................................................................... 16 數(shù)控系統(tǒng)硬件電路 ............................................................................................... 16 基本硬件組成 ............................................................................................. 16 硬件配套及基本結(jié)構(gòu) ......