【正文】 32 根據(jù)《切削手冊》規(guī)定，查得鉸φ32mm孔的進(jìn)給量，并根據(jù)鉆床規(guī)格選擇： f= 擴(kuò)孔鉆孔時(shí)的切削速度，根據(jù)其他相關(guān)資料，確定為： v= 式中，v鉆為用鉆頭鉆同樣尺寸實(shí)心孔時(shí)的切削速度，故： v==14=7m/min 按鉆床選?。簄=68r/min（《工藝手冊》） 切削工時(shí)：入切量及超切量y+=2,L=l+y+ 則：工序五：鉆M8 (1)鉆M8底孔Ф7 1)選擇切削用量：選擇高速鋼直柄麻花鉆直徑為Ф7，鉆頭形狀為雙錐修磨橫刀。由《切削用量簡明手冊》=。 2)確定鉆頭磨鈍標(biāo)準(zhǔn)及壽命：由《切削用量簡明手冊》=35min。則主軸轉(zhuǎn)速為。故實(shí)際切削速度為v=校核機(jī)床扭矩及功率：由《切削用量簡明手冊》 根據(jù)Z525機(jī)床說明書可知Mm=計(jì)算鉆削加工工時(shí)：由《切削用量簡明手冊》+△的值為6mm。由《機(jī)械加工工藝手冊》=11～12m/min。故實(shí)際切削速度為 Vc=攻螺紋機(jī)動實(shí)際的計(jì)算 =工序六：磨削(1)選擇砂輪。(2)切削用量的選擇砂輪轉(zhuǎn)速n砂=3000r/min(見機(jī)床說明書)，v砂=13m/s軸向進(jìn)給量f=，徑向進(jìn)給量fr=,V=10m/min(3)切削工時(shí) 工序七：刮研查《機(jī)械制造工藝與機(jī)床夾具課程設(shè)計(jì)指導(dǎo)》表214得：mm三、課程設(shè)計(jì)心得體會 通過本次的設(shè)計(jì)，使我能夠?qū)镜闹R做進(jìn)一步的了解與學(xué)習(xí)，對資料的查詢與合理的應(yīng)用做了更深入的了解，本次進(jìn)行工件的工藝路線分析、工藝卡的制定、工藝過程的分析，對我們在大學(xué)期間所學(xué)的課程進(jìn)行了實(shí)際的應(yīng)用與綜合的學(xué)習(xí)。其中，工序機(jī)床的進(jìn)給量,主軸轉(zhuǎn)速和切削速度需要計(jì)算并查手冊確定。而且大大提高了動手的能力，使我充分體會到了在創(chuàng)造過程中的探索的艱難和成功的喜悅。由于我的知識能力水品有限，這個(gè)設(shè)計(jì)還不是很完善。四、參考文獻(xiàn)[1] 艾興 肖詩綱．切削用量簡明手冊（第3版）．北京：機(jī)械工業(yè)出版社；[2] 蘭建設(shè)．機(jī)械制造工藝與夾具．北京：機(jī)械工業(yè)出版社；[3] 吳拓．機(jī)械制造工藝與機(jī)床夾具課程設(shè)計(jì)指導(dǎo)書（第2版）．北京：機(jī)械工業(yè)出版社；[4] 陸劍中 周志明等．金屬切削原理與刀具．北京：機(jī)械工業(yè)出版社；[5] 呂天玉 張柏軍．公差配合與測量技術(shù)（第四版）．大連：大連理工大學(xué)出版社。二、主要內(nèi)容，了解零件的結(jié)構(gòu)特點(diǎn)和技術(shù)要求，對零件進(jìn)行結(jié)構(gòu)分析和工藝分析。，選擇各工序的加工設(shè)備和工藝重慶機(jī)電職業(yè)技術(shù)學(xué)院課程設(shè)計(jì)用紙裝備，確定各工序的加工余量和工序尺寸及其公差，計(jì)算各工序的切削用量和工時(shí)定額。撰寫設(shè)計(jì)說明書。wait in the line for one hour to get a ticket, and another two hours at the site, to only see a tiny bit of the place due to the crowds. Last year, 428 million tourists traveled in China over the weeklong holiday in October. Traveling during this period is a matter that needs thorough preparation. If you are short on time to plan the uping Golden Week it may not be a bad idea to avoid some of the most crowded places for now. There is always a place so fascinating that everyone yearns for. Arxan is a place like this. The beauty of Arxan is everlasting regardless of the changing of four seasons. Bestowed by nature, its spectacular seasonal landscape and mountains are just beyond word. Arxan is a crucial destination for the remended travelling route, China Inner Mongolia Arxan — Hailar — Manzhouli. It is also the joint of the four prairies across the SinoMongolian border, where people gravitate towards the exotic atmosphere mixed with Chinese, Russian, and Mongolia elements. As a historic site for the Yitian Battle, Arxan still embodies the spirit of Genghis Khan. Walking into Arxan, you will be amazed by a kaleidoscope of gorgeous colors all the year round the Spring azaleas blooming red in the snow, the Summer sea wavering blue in the breeze, the Autumn leaves painted in yellow covering volcanic traces, and the Winter woods shining white on the vast alpine snowscape. Hinggan League Arxan city is situated in the far eastern area of Inner Mongolia Autonomous Region. Its full name Haren Arxan means hot holy water in the Mongolian language. Arxan is a tourism city in the northern frontier with a blend of large forest, grand prairies, vast snowfield, heaven lake cluster, thermium, as well as volcanic cluster. It is a rare and unique ecotourism base filled with healthy sunshine, clean air and unspoiled green. s largest virgin forest, and known for its spring and ecological environment, Arxan is marveled at by many tourists as the purest land on earth. Autumn in the northern part of the country es earlier than the South. A September rain followed by the footprints of Autumn brings more colors to the once emerald green mountain and blooming grassland. The silver birch turns golden, while the larch is still proudly green. You will find yourself drowned in the intoxicating red of the wild fruits as well as the glamour of flowers in full blown. And your heart will be lingering on the woods as it39。rains heavily on Saturday night, some elderly Chinese will say it is because Zhinu, or the Weaving Maid, is crying on the day she met her husband Niulang, or the Cowherd, on the Milky Way. Most Chinese remember being told this romantic tragedy when they were children on Qixi, or the Seventh Night Festival, which falls on the seventh day of the seventh lunar month, which is usually in early August. This year it falls on Saturday, August 2. Folklore Story As the story goes, once there was a cowherd, Niulang, who lived with his elder brother and sisterinlaw. But sh