劃線工具見表2-2。表2-2 劃線工具(續(xù)表)(續(xù)表)(續(xù)表)(續(xù)表)(續(xù)表)(續(xù)表)(續(xù)表)注:鋼尺、90°角尺、萬能量角器、劃線尺架、游標高度尺等劃線工具見表1-1。表1-1 常用量具及其應用(續(xù)表)(續(xù)表)(續(xù)表)(續(xù)表)(續(xù)表)(續(xù)表)(續(xù)表)(續(xù)表)(續(xù)...[繼續(xù)閱讀]
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劃線工具見表2-2。表2-2 劃線工具(續(xù)表)(續(xù)表)(續(xù)表)(續(xù)表)(續(xù)表)(續(xù)表)(續(xù)表)注:鋼尺、90°角尺、萬能量角器、劃線尺架、游標高度尺等劃線工具見表1-1。表1-1 常用量具及其應用(續(xù)表)(續(xù)表)(續(xù)表)(續(xù)表)(續(xù)表)(續(xù)表)(續(xù)表)(續(xù)表)(續(xù)...[繼續(xù)閱讀]
1.劃線基準的選擇原則(表2-3)表2-3 劃線基準的選擇原則2.劃線步驟(表2-4)表2-4 劃線步驟3.劃線方法(1)平面劃線方法(表2-5)表2-5 平面劃線方法(續(xù)表)(續(xù)表)(續(xù)表)(續(xù)表)(續(xù)表)(續(xù)表)(2)立體劃線方法(表2-6)表2-6 立體劃線時工件的支承方...[繼續(xù)閱讀]
①劃線涂料不能涂太厚。②不能撞擊或敲打劃線平板。③不可使用鈍劃針劃線。④劃線盤的劃線針頭不宜伸出過長。⑤V形塊不宜交叉不成對使用。⑥不能用手直接旋轉(zhuǎn)千斤頂?shù)捻敿狻"咭⒁膺x擇正確的找正方法。...[繼續(xù)閱讀]
1.鏨子的結(jié)構(gòu)及其楔角與被鏨工件材料(表2-8)表2-8 鏨子的結(jié)構(gòu)及其楔角與被鏨工件材料2.鏨子的種類、特點與用途(表2-9)表2-9 鏨子的種類、特點與用途...[繼續(xù)閱讀]
鏨削質(zhì)量分析見表2-11。表2-11 鏨削質(zhì)量分析鏨子損壞的原因見表2-12。表2-12 鏨子損壞的原因...[繼續(xù)閱讀]
①鏨削時,工作臺周圍要設安全網(wǎng);鏨脆性材料時要戴防護鏡。②鏨削油槽時,油槽鏨的后角不宜過大或過小。③鏨削板料時,鏨子的刃口不能正對著板料鏨削。④鏨削過程中,要始終保持正確的鏨削角度;鏨削終了時,擊錘要輕,以免傷手。...[繼續(xù)閱讀]
1.鋸弓(表2-13)表2-13 鋸弓的分類及其結(jié)構(gòu)2.鋸條(表2-14)手工鋸條規(guī)格一般有200mm、250mm、300mm三種。鋸齒角度:后角α0=40°,楔角β0=50°,前角γ0=0°。表2-14 鋸條規(guī)格及應用...[繼續(xù)閱讀]
1.鋸割時鋸條損壞的原因及防止方法(表2-17)表2-17 鋸割時鋸條損壞的原因及防止方法2.鋸割時產(chǎn)生廢品的原因及解決方法(表2-18)表2-18 鋸割時產(chǎn)生廢品的原因及解決方法(續(xù)表)...[繼續(xù)閱讀]
1.鉆孔的裝備(1)鉆孔的裝備(表2-23)表2-23 鉆孔的裝備(續(xù)表)(續(xù)表)(續(xù)表)(續(xù)表)(續(xù)表)(2)鉆頭的幾何要素(表2-24、表2-25)表2-24 標準麻花鉆的切削幾何要素(續(xù)表)表2-25 群鉆的切削幾何要素及特點(續(xù)表)(續(xù)表)(續(xù)表)(續(xù)表)(續(xù)表)(續(xù)表)(...[繼續(xù)閱讀]
擴孔是用擴孔工具將已鉆的孔擴大。擴孔及擴孔鉆見圖2-2,切削參數(shù)見表2-36。圖2-2 擴孔及擴孔鉆表2-36 擴孔工具及切削參數(shù)的選擇注:D——擴孔直徑;D預鉆——擴孔前的鉆孔直徑;f鉆——鉆孔進給量;vc鉆——鉆孔切削速度。...[繼續(xù)閱讀]