【正文】 本只是稍縱即逝的情緒，我們卻固執(zhí)地耿耿于懷 By utilizing our breath we soften our experiences. If we dam them up, our lives will stagnate, but when we keep them flowing, we allow more newness and greater experiences to 。t start planning... Those years, those days of do, finally, like youth, will end in our life. 此刻，天空是陰暗的，空氣里有著剛下過雨之后的清新因子。想要的，不想要的，界限明確，好像沒有什么可以撼動自己。 Junior high school, thought to have a crush on just means that the real growth, but over the past three years later, his writing of alumni in peace, suddenly found that isn39。s governing body, has also ordered an immediate investigation into the referee39。t appealed against the disciplinary action your employer has taken against you. However, if you win your case, the tribunal may reduce any pensation awarded to you as a result of your failure to appeal. Remember that in most cases you must make an application to an employment tribunal within three months of the date when the event you are plaining about happened. If your application is received after this time limit, the tribunal will not usually accept i. If you are worried about how the time limits apply to you If you are being represented by a solicitor at the tribunal, they may ask you to sign an agreement where you pay their fee out of your pensation if you win the case. This is known as a damagesbased agreement. In England and Wales, your solicitor can39。第二步整理資料， 經(jīng)過本套模具的設(shè)計(jì)，讓我學(xué)習(xí)到了更多的模具設(shè)計(jì)知識，讓我的理論與實(shí)際有了第一次的結(jié)合。收集資料是做畢業(yè)設(shè)計(jì)的前期準(zhǔn)備工作，資料是否全面、可靠，關(guān)系到整個(gè)畢業(yè)設(shè)計(jì)的進(jìn)程。產(chǎn)品設(shè)計(jì)過程是創(chuàng)造性勞動的過程，產(chǎn)品的設(shè)計(jì)應(yīng)按科學(xué)程序進(jìn)行，一般包括課題調(diào)研、擬定設(shè)計(jì)方案，總體設(shè)計(jì)，零部件設(shè)計(jì)、技術(shù)資料整理、產(chǎn)品試制、改進(jìn)設(shè)計(jì)等過程，一個(gè)產(chǎn)品須經(jīng)過多次改進(jìn)，才能完善和成 熟。 模座外形尺寸為 340x238，閉合高度為 197。又因?yàn)槭堑寡b復(fù)合模生產(chǎn)，所以采用推件塊向下推出產(chǎn)品，生產(chǎn)比較便于操作，提高了生產(chǎn)效率。如圖 04 河南工業(yè)職業(yè)技術(shù)學(xué)院 機(jī)械工程系畢業(yè)論文 12 圖 04 河南工業(yè)職業(yè)技術(shù)學(xué)院 機(jī)械工程系畢業(yè)論文 13 3沖模結(jié) 構(gòu)設(shè)計(jì) 因制件形狀簡單，只有一個(gè)較大的落料凹模，可選用整體式矩形凹模較為合理，因生產(chǎn)批量不大，由冷沖模設(shè)計(jì)指導(dǎo)表 316 選用 Cr12 為凹模材料。 ﹙ 2﹚凹模各孔位置尺寸 由于該制件尺寸不多，包括一個(gè)大孔位置尺寸，四個(gè)小孔位置尺寸，兩切口?？孜恢眉扒袛嗫卓谖恢贸叽纭? =﹙ 20+﹚ 0 = ㎜ d 凹 =﹙ d 凸 +Zmin﹚ +amp。查表得 n=3 查《冷沖 壓技術(shù)》表得； K 推 = F 推 =nK 推 F 沖 =3490 =﹙ KN﹚ 總的沖壓力為： F= 603+490+24+=﹙ KN﹚ 模具的壓力中心就是沖壓力合力的作用點(diǎn)，為了保證壓力機(jī)和模具的正常工作，應(yīng)使模具的壓力中心與壓力機(jī)滑塊的中心線重合。生產(chǎn)效率高、零件的精度易保證、平直度好、模具易于加工。 （ 2）制件尺寸精度 內(nèi)形尺寸： 05Φ + 0 Φ20 + 0 外形尺寸： Φ160? 完成該零件的沖壓加工所需要的沖壓基本性質(zhì)的工序只有沖孔、落料兩道工序。因此，沖壓技術(shù)對發(fā)展生產(chǎn)、增加效益、更新產(chǎn)品等方面具有重要作用。 目前，我國沖壓技術(shù)與先進(jìn)工業(yè)發(fā)達(dá)國家相比還相當(dāng)落后，主要原因是我國在沖壓基礎(chǔ)理論及成形工藝、模具標(biāo)準(zhǔn)化、模具設(shè)計(jì)、模具制造工藝及設(shè)備等方面與工業(yè)發(fā)達(dá)國家尚有相當(dāng)大的差距，導(dǎo)致我國模具在壽命、效率、加工精度、生產(chǎn)周期等方面與先進(jìn)工業(yè)發(fā)達(dá)國家的模具相比差距相當(dāng)大。 本次設(shè)計(jì)是參考了眾多參考文獻(xiàn)及專業(yè)資料的規(guī)范要求編寫而成。 目前，我國沖壓技術(shù)與先進(jìn)工業(yè)發(fā)達(dá)國家相比還相當(dāng)落后，主要原因是我國在沖壓基礎(chǔ)理論及成形工藝、模具標(biāo)準(zhǔn)化、模具設(shè)計(jì)、模具制造工藝及設(shè)備等方面與工業(yè)發(fā)達(dá)國家尚有相當(dāng)大的差距，導(dǎo)致我國模具在壽命、效率、加工精度、生產(chǎn)周期等方面與先進(jìn)工業(yè)發(fā)達(dá)國家的模具相比差距相當(dāng)大。研究和發(fā)展模具技術(shù)，對于促進(jìn)國民經(jīng)濟(jì)的發(fā)展具有特別重要的意義，模具技術(shù)已成為衡量一個(gè)國家產(chǎn)品制造技術(shù)的重要標(biāo)志之一，隨著工業(yè)生產(chǎn)的迅速發(fā)展，模具工業(yè)在國民經(jīng)濟(jì)中的地位日益提高并在國民經(jīng)濟(jì)發(fā)展過程中發(fā)揮越來越大的作用。據(jù)國際生產(chǎn)技術(shù)協(xié)會預(yù)測，到本世紀(jì)中，機(jī)械零部件中 60%的粗加工、80%的精加工要有模具來完成加工。 由制件圖分析可知： （ 1）沖裁件的公差等級不高于 IT14，一般落料公差等級最好低于 IT10，沖孔公差等級最好低于 IT9，由圖可知沖孔公差為 、 ，因此可用于一般精度的沖裁，普通沖裁可以達(dá)到要求。 方案三 河南工業(yè)職業(yè)技術(shù)學(xué)院 機(jī)械工程系畢業(yè)論文 4 采用復(fù)合模生產(chǎn)，沖孔與落料復(fù)合。 查《冷沖壓技術(shù)》表 317 得卸料力的系數(shù)得 K卸 = ，則 F 卸 = K卸 F=603=24﹙ KN﹚ （ 3）沖孔力 河南工業(yè)職業(yè)技術(shù)學(xué)院 機(jī)械工程系畢業(yè)論文 7 由計(jì)算公式 : F 沖 = Ltδ b 一般情況下，材料的 δ b = 沖孔落料工序：查《冷沖壓技術(shù)》得： δ b=600Mpa F 沖 =（ 50﹢ 20） 2600/1000 =490﹙ KN﹚ （ 4）沖孔推件力： F 推 =nK 推 F 沖 下標(biāo)字看不清楚 式中 n－－沖孔卡在凹模內(nèi)的工件的數(shù)量。取 ＆凸 =﹙ ZmaxZmin﹚ = ＆凹 =﹙ ZmaxZmin﹚ = 故 d 凸 = ㎜ d 凹 =+ 0 ㎜ 河南工業(yè)職業(yè)技術(shù)學(xué)院 機(jī)械工程系畢業(yè)論文 9 ﹙ 2﹚零件尺寸 d=Φ20 + 0 ㎜ 查公差表得： ＆凹 = ㎜ ＆凸 = ㎜ ＆凹 +＆凸 = ㎜ 刃口尺寸 d 凸 =﹙ dmin+X△ ﹚ 0 amp。經(jīng)過分析采用直筒形的凹模刃口。 凸 圖 03 凸模固定板各孔與凸模配合，通常按 H7/n6 或 H7/m6 選取，該制件選 H7/n6配合，查冷沖模設(shè)計(jì)指導(dǎo)表 319 可得各型孔尺寸公差。 ﹙ 3﹚ 卸料 、出件方式的選擇 因?yàn)楣ぜ虾駷?2 ㎜，相對較厚，卸料力也比較大，故采用彈性卸料。封閉高度和裝模高度相差一個(gè)墊板厚度。主要收獲和體會如下： 第一 學(xué)到了產(chǎn)品設(shè)計(jì)的方法。 第四 提高了收集資料和查閱手冊的能力。 根據(jù)學(xué)校的安 排，我首先開始確定論文題目，后來在 指導(dǎo)老師張老師的指導(dǎo)下，我結(jié)合自己的實(shí)際情況，第一步首先查找模具設(shè)計(jì)的相關(guān)資料，這對我收集資料起到了非常大的作用，再就是從網(wǎng)上下載大量知識。t agree with the disciplinary action your employer has taken against you your employer dismisses you and you think that you have been dismissed unfairly. For more informu, take advice from one 答 辯 小 組 成 員 姓名 職稱 工作單位 備注 河南工業(yè)職業(yè)技術(shù)學(xué)院 機(jī)械工程系畢業(yè)論文 of the anisations listed under Further help. Employment tribunals are less formal than some other courts, but it is still a legal process and you will need to give evidence under an oath or affirmation. Most people find making a claim to an employment tribunal challenging. If you are thinking about making a claim to an employment tribunal, you should get help straight away from one of the anisations listed under Further help. ation about dismissal and unfair dismissal, see Dismissal. You can make a claim to an employment tribunal, even if you haven39。s 21 win. Michel Platini, president of European football39。 The end of our life, and can meet many things really do? 而窮盡我們的一生，又能遇到多少事情是真正地非做不可？ During my childhood, think lucky money and new clothes are necessary for New Year, but as the advance of the age, will be more and more found that those things are optional。s time, your ideas are always special to clear. Want, want, line is clear, as if nothing could shake his. Also once seemed to be determined to do something, but more often is he backed out at last. Dislike his cowardice, finally found that there are a lot of love, there are a lot of miss, like shadow really have been doomed. Those who do, just green years oneself give oneself an arm injection, or is a selfri