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U型和直線型生產線對比報告(推薦5篇)

時間:2019-05-14 04:53:42下載本文作者:會員上傳
簡介:寫寫幫文庫小編為你整理了多篇相關的《U型和直線型生產線對比報告》,但愿對你工作學習有幫助,當然你在寫寫幫文庫還可以找到更多《U型和直線型生產線對比報告》。

第一篇:U型和直線型生產線對比報告

U型和直線型生產線對比報告

一、概況

生產線布局是工廠布局的主要內容之一。根據企業的生產綱領,在已確定的生產線空間內,按照生產工藝的要求,在滿足各種生產線布局的原則以及生產線空間的限制,確定加工設備和物流設施在生產線中的位置,使生產線獲得最佳的運行效率和最低的運行成本。

1)生產線布局的類型:可以分工藝原則布局和產品類型原則布局,基本形狀主要有U 型、L型、直線型、E型以及O型。

2)生產線布局方案評價技術:評價指標主要有生產效率、產能、平衡率、時間、布局 成本。

3)生產方式:傳統大規模生產和精益生產方式

二、生產布局前的準備工作

1)產能評估 2)空間評估 3)生產條件分析

三、直線型和U型布局比較

1)直線型:設備配置按物流路線直線放置,容易實現自動化傳輸,工人勞動強度相對 低,但是平衡比較困難

進料

出口

2)U型:物流路線呈U型,進出料由一人控制,按工序排布生產線,作業員多能工化,移動式作業方式

其是首尾相顧,單件流,一旦某一生產環節出現停頓,尾部無成品產出,首部就及時停止新半成品的輸入,減少在線庫存,加快資金周轉率。另外當有些生產環節生產節拍時間慢于整條線的節拍時(如新人等原因),其他工位可以及時給予支援,但這要求各個員工具有多外崗位培訓和操作技能。

進料

出口

3)兩種生產線優缺點:

1、U型線

適用范圍:品種多,批量少,生產工序相對明確,工藝相對單純之產品(產品大小無關緊要,U型線可以人動產品不動,也可以人不動產品動)

優點:(1)相對可以減少作業場地

(2)生產平衡率高

(3)產品切換時間短,完全可以多到零切換

(4)生產計劃安排簡單,可以根據標準工時直接將任務安排到個人

缺點:(1)不便于大批量生產

(2)人員技能要求非常高,培養周期長

(3)工具設備投入高(每人都需要一套完整的生產設備及工具)

(4)要有良好的物料支撐及物料配送體系(同樣需要很好的物料配送人員)

(5)生產布局規劃及工藝節點設計要求高

2、直線型

適用范圍:無論小批量多品種還是少品種大批量幾乎所有類型產品都能適用

優點:(1)能批量化規模化生產,生產效率高

(2)物流流向單一,工序物料單一,物料配送及管理簡單

(3)工序分工明確,人員技能熟練度提升快,并且可以通過輪崗制培養多能工

(4)工具設備投入少,一條線使用一套生產設備及工具

缺點:(1)產品切換時間長

(2)生產線平衡率低

(3)物料配送難道大

(4)生產質量問題會導致批量返工

(5)人員管理難度大,工序分工明確,一個蘿卜一個坑

四、總結

U型和直線型兩種布局(Layout)有各自的優缺點,不同生產條件適用不同的布局方式。

通常來講選用哪一種Layout,可從以下幾點考慮:

1)首先要了解所需要生產產品及客戶需求量(是多品種小批量還是少品種大批 量)

2)計算出這條線的人力配置(員工數量是否有限制),確定人流、物料路線信息(是否有空間上的限制)

3)物料的大小和上料的規則(考慮布局空間是否有限制)4)操作工是否能做到一人多用(多能工)5)空間的利用率

第二篇:直線型(四邊形)證明專題訓練

1如圖6,在正方形ABCD中,G是BC上的任意一點,(G與B、C兩點不重合),E、F是AG上的兩點(E、F與A、G兩點不重合),若AF=BF+EF,∠1=∠2,請判斷線段DE與BF有怎樣的位置關系,并證明你的結論.在正方形ABCD中,AC為對角線,E為AC上一點,連接EB、ED.(1)求證:△BEC≌△DEC;

F,當∠BED=120°時,求∠EFD的度數.

A

2B

E

F

D

C

圖6

2平行四邊形ABCD的對角線相交于點O,直線EF經過點O,分別與AB,CD的延長線交于點E,F.求證:四邊形AECF是平行四邊形.如圖,已知:ABCD中,?BCD的平分線CE交邊AD于

E,?ABC的平分線BG

交CE于F,交AD于G.求證:AE?DG.

E G

圖7

B C 3如圖,已知平行四邊形ABCD,DE是?ADC的角平分線,交BC于點E.(1)求證:CD?CE;

(2)若BE?CE,?B?80?,求?DAE的度數.

4.如圖,在△ABC中,AB=AC,D為BC中點,四邊形ABDE是平行四邊形.求證:四邊形ADCE是矩形.A

D

B

C

5.如圖,分別以Rt△ABC的直角邊AC及斜邊AB向外作等邊△ACD、等邊△ABE。已知∠BAC=30o,EF⊥AB,垂足為F,連結DF。(1)試說明AC=EF;

(2)求證:四邊形ADFE是平行四邊形。

6.如圖,在□ABCD中,EF∥BD,分別交BC,CD于點P,Q,交AB,AD的延長線于點E.F.已知BE=BP.求證:(1)∠E=∠F(2)□ABCD是菱形.

AE

6,AC是菱形ABCD的對角線,點E、F分別在邊AB、AD上,且AE=AF.求證:△ACE≌△ACF.

47已知:如圖,在四邊形ABCD中,∠ABC=90°,CD⊥AD,AD2+CD2=2AB2.(1)求證:AB=BC;

(2)當BE⊥AD于E時,試證明:BE=AE+CD.

8如圖已知E、F分別是□ABCD的邊BC、AD上的點,且BE=DF.(1)求證:四邊形AECF是平行四邊形;(2)若BC=10,∠BAC=90°,且四邊形AECF是菱形,求BE的長 .

9如圖,在□ABCD中,E、F分別為邊ABCD的中點,BD是對角線,過A點作AGDB交CB的延長

線于點G. A

(1)求證:DE∥BF;

D(2)若∠G=90,求證四邊形DEBF是菱形.

10如圖,將□ABCD的邊DC延長到點E,使CE=DC,連接AE,B 交BC于點F.

⑴求證:△ABF≌△ECF ⑵若∠AFC=2∠D,連接AC、BE.求證:四邊形ABEC是矩形.

11如圖,E、F分別是矩形ABCD的對角線AC和BD上的點,且AE=DF。求證:BE=CF

12.如圖,矩形ABCD的對角線相交于點

O,DE∥AC,CE∥BD.(1)求證:四邊形OCED是菱形;

(2)若∠ACB=30?,菱形OCED的面積為83,求AC的長.

A

D

E

13.如圖,在△ABC中,∠ACB=90°,BC的垂直平分線DE交BC于D,交AB于E,F在DE上,且AF=CE=AE.⑴說明四邊形ACEF是平行四邊形;

⑵當∠B滿足什么條件時,四邊形ACEF是菱形,并說明理由.

第25題圖

14.如圖,P是矩形ABCD下方一點,將△

PCD繞P點順時針旋轉60°后恰好D點與A點重合,得到△PEA,連接EB,問△ABE是什么特殊三角形?請說明理由.15.如圖,在梯形ABCD中,DC‖AB,AD=BC, BD平分?ABC,?A?60.?

過點D作DE?AB,過點C作CF?BD,垂足分別為E、F,連接EF,求證

:△DEF為等邊三角形.16.如圖,四邊形ABCD是等腰梯形,AD∥BC,點E,F在BC上,且BE=CF,連接DE,AF.求證:DE=AF.AD

B

E

F

C

17.如圖,梯形ABCD中,AD∥BC,∠DCB=45°,CD =2,BD⊥CD .過點C作CE⊥AB于E,交對

角線BD于F.點G為BC中點,連結EG、AF.(1)求EG的長;

(2)求證:CF =AB +AF.

18.如圖,在等腰△ABC中,點

D、E分別是兩腰AC、BC上的點,連接AE、BD相交于點O,∠1=∠2.

(1)求證:OD=OE;(2)求證:四邊形ABED是等腰梯形;(3)若AB=3DE, △DCE的面積為

2, 求四邊形ABED的面積.

題圖

24.如圖,在直角梯形ABCD中,AB∥CD,AD⊥DC,AB=BC,且AE⊥BC.⑴ 求證:AD=AE;

⑵ 若AD

=8,DC=4,求AB的長.

第三篇:直線型幾何計算與證明(范文模版)

直線型幾何計算與證明(相似問題)

1、如圖,已知∠ACB=90°,AC=BC,BE⊥CE于E,AD⊥CE于D,CE與AB相交于F.

(1)求證:△CEB≌△ADC;(2)若AD=9cm,DE=6cm,求BE及EF的長. E2、如圖,直角梯形ABCD中,∠ADC=90°,AD∥BC,點E在BC上,點F在AC上,∠DFC=∠AEB.

(1)求證:△ADF∽△CAE;

(2)當AD=8,DC=6,點E、F分別是BC、AC的中點時,求直角梯形ABCD的面積?

C A3、如圖,△ABC是等邊三角形,CE是外角平分線,點D在AC上,連結BD并延長與CE交于點E.

(1)求證:△ABD∽△CED.

(2)若AB=6,AD=2CD,求BE的長.

4、如圖,在Rt△ABC中,∠ACB=90°,AD平分∠CAB交于點D,過點C作CE⊥AD于E,CE的延長線交AB于點F,過點E作EG∥BC交AB于G,AE·5.(1)求證:CE=EF;(2)求AC的長.F

F

G

B5、已知,如圖,在△ABC中,D是BC的中點,且AD=AC,DE⊥BC交AB于點E,EC與AD相交于點F.(1)求證:△ABC∽△FCD;(2)若S△FCD=5,BC=10,求DE的長.6、如圖1,在Rt△ABC中,?BAC?90°,AD⊥BC于點D,點O是AC邊上一點,連接BO交AD于F,OE⊥OB交BC邊于點E.

(1)求證:△ABF∽△COE;

OFAC

(2)當O為AC邊中點,的值; ?2時,如圖2,求

OEAB

OFAC

(3)當O為AC邊中點,的值. ?n時,請直接寫出

OEAB

B

A

O 圖

1C

O 圖

2B

F

C

C7、已知:如圖,在梯形ABCD中,AD∥BC,∠DCB = 90°,E是AD的中點,點P是BC邊上的動點(不與點B重合),EP與BD相交于點O.(1)當P點在BC邊上運動時,求證:△BOP∽△DOE;

(2)設(1)中的相似比為k,若AD︰BC = 2︰3.請探究:當k為下列三種情況時,四邊形ABPE是什么四邊形?①當k= 1時,是;②當k= 2時,是;③當k= 3時,是.并證明...k= 2時的結論.8、如圖1,在Rt△ABC中,∠ACB=90°,AC=6,BC=8,點D在邊AB上運動,DE平分∠CDB交邊BC于點E,EM⊥BD垂足為M,EN⊥CD垂足為N.

O P

C D

(1)當AD=CD時,求證:DE∥AC;

(2)探究:AD為何值時,△BME與△CNE相似?

(3)探究:AD為何值時,四邊形MEND與△BDE的面積相等?

第四篇:對比選擇型作文

對比選擇型作文

I.對比選擇型作文時四級考試作文的傳統題型,這類考試的寫作思路是有章可循的,通常給出兩種對立的觀點讓考生權衡利弊,最后得出自己的結論,即:一些人認為…;另一些人認為…;我認為…。

寫作提綱如下:

第一段:引出評論的事物,簡要提出人們的看法

第二段:提出一種觀點或優點,給出支持性分論點

第三段:承上啟下地過渡,提出另一種觀點或缺點,給出支持性分論點

第四段:平衡兩種看法,給出自己的看法。

其中,在三段式作文的情況下,可以將第二段和第三段合并。

對比選擇型作文舉例:

1.Should the University Campus Be Open to Tourists?

1)名校校園正成為旅游新熱點

2)校園是否應該對游客開放,人們看法不同

3)我認為……

2.Lectures or Discussions?

1)有些學生認為講授式教學方式更適合自己

2)令一些學生則更喜歡討論式教學方式

3)我的看法

3.The Pros and Cons of College Students’ Taking Part-time Jobs.1)分析大學生做兼職的利與弊

2)談談我的看法

4.Spring Festival Gala on CCTV

1)許多人喜歡在除夕觀看春節聯歡晚會

2)有些人卻提出取消春節聯歡晚會

3)在我看來……

II.對比選擇型作文中常用句型

1.There is a general discussion nowadays on the problem of _____.Some argue/ hold that _____, but others set forth a totally different argument about the issue.如今,_____問題引起了廣泛討論。有些人認為_____,但是其他人則對此持完全相反的觀點。

2.In reaction to the phenomenon/ In answer to the problem/ In response to the on-going social change, some people believe _____;in their minds, _____.Others maintain _____;in their eyes, _____.對于這種現象/對于解決該問題/對于該社會變化,一些人認為_____,在他們看來_____。其他人則認為_____,在他們看來_____。

3.Personally, I side with the former/ latter opinion.就我個人而言,我支持前/ 后一種觀點。

4.I am of the opinion that priority should be given to _____.我認為我們應該優先考慮_____的觀點。

5.When we consider A versus B on the basis of _____, shouldn’t we think that the latter/ former

is a better _____?

在_____的基礎上考慮A和B,難道我們不認為后者/前者是一種比較好的_____?

6.With the development of _____, A will prove to hold greater superiority over B.隨著_____的發展,A將比B占更大的優越性。

7.It may be briefly summed up as follows.簡而言之,總結如下。

8.From what has been mentioned above, we can come to the conclusion that_____.綜上所述,我們可以得出結論_____。

9.From my point of view, it is more reasonable to support the first opinion rather than the

second.在我看來,支持第一種觀點比支持第二種更合理。

10.I cannot entirely agree with the idea that_____.我無法完全同意這一觀點_____。

11.In my opinion, it is more advisable to do _____ than to do_____.在我看來,做_____比做_____更明智。

12.This case has aroused echoes throughout the country, with more and more people following

its lead, but ideas about it vary widely.這個事件在全國產生了反響,也有很多人紛紛效仿,但是人們對它的看法卻極不相同。

13.The other side of the coin has voiced strong opposition saying that_____.爭論的另一方表示強烈反對,他們聲稱_____。

14.A public debate has arisen as to the phenomenon of_____.關于_____的現象引發了一場公眾討論。

15.There is a long-running debate as to whether_____.關于是否_____的論戰已經持續了很久。

16.There is no doubt that _____ has its drawbacks as well as merits.毫無疑問,_____有優點也有缺點。

17.People’s views on _____ vary from person to person.Some hold that _____.However, others

believe that_____.對_____的觀點因人而異。有些人認為_____,然而其他人確認為_____。

18.There are different opinions among people as to_____.關于_____人們的觀點大不相同。

III.范文欣賞

范文一

1.許多人喜歡在除夕觀看春節聯歡晚會

2.有些人卻提出取消春節聯歡晚會

3.在我看來……

Spring Festival Gala on CCTV

It has been a hot topic for a long time whether the CCTV Spring Festival Gala should be cancelled or not.Many people hold that CCTV Spring Festival Gala offers a wonderful

opportunity to celebrate this traditional festival, for the Chinese all over the world can share the same happiness and excitement brought by the TV program.In addition, many performances are very impressive, and some can even positively affect our life value.However, every coin has two sides.Some people hold that CCTV Spring Festival Gala should be cancelled.One of the most significant reasons may be that this form of celebration force people to spend the eve more passively.What’s more, a great proportion of the programs are not attractive enough.As to me, my favor goes to the former opinion, because CCTV Spring Festival Gala gives us another option to celebrate this important moment.However, it is essential to improve the quality of the programs, and I hope some better forms of celebration will be created in the near future.點評:

本篇文章結構完整,框架合理,主題突出,詳略得當。第一段用It has been a hot topic for a long time whether the CCTV Spring Festival Gala should be cancelled or not.引入話題,并根據提綱要求提出支持舉辦春晚的觀點及理由。第二段用However, every coin has two sides.將筆鋒一轉,提出對立觀點和理由。第三段以 As to me, my favor goes to the former opinion,開頭,表達自己對春晚的支持,并同時表明對春晚改進的期望。

范文二

1.名校校園正成為旅游新熱點

2.校園是否應該對游客開放,人們看法不同

3.我認為……

Should the University Campus Be Open to Tourists?With the development of tourism, many university campuses are open to tourists.Opinions on whether the university campus should be open to tourists vary from individual to individual.Some people hold the idea that university campus should be open to tourists.In their opinion, the opening of campus will stimulate the tourist industry, which contributes to making more money for renewing teaching buildings and libraries.However, others think differently.Opponents hold that the inflowing of tourists may disturb the normal teaching activities.In my viewpoint, I prefer the latter one.For one thing, the interests of university and its students should be taken into account seriously.For another, too many tourists will add a burden to the security department of the university and ruin the quiet environment that students need to study effectively.After all, how shortsighted would it be to develop our university at the cost of order and safety.點評:

縱觀全文,論證充分,詳略得當。第一段提出話題,即隨著旅游業的發展,許多大學校園正成為旅游熱點。第二段引出支持方和反對方的對立觀點及理由。第三段表明自己的觀點,并分兩方面進行論證。最后一句話以一個感嘆句加虛擬語氣總結全文,為畫龍點睛之筆,很有說服力。

Assignment: The Pros and Cons of College Students’ Taking Part-time Jobs.1)分析大學生做兼職的利與弊

2)談談我的看法

第五篇:對比選擇型作文

對比選擇型作文模板:

When it comes to ____ ,different people hold different views.Some contend that____.For one thing,____.For another,___.In spite of all these claims, others maintain that ____,They point out that____.Another instance often cited is that____.It’s no easy task to find a satisfactory answer to the issue.As for me, there’s some truth to both arguments.It’s advisable to ______.現象解釋型作文模板:

Recently, ____What amazes us most is_____.It is true that _____.There are many reasons explaining ______.The main reason is_____,What is more, _____,Thirdly, _____.As a result, _____.

Considering all these, _____.For one thing, ____For another, ____.In conclusion, ____.

問題解決型作文模板:

With the ____of____,So it is of great importance for us to____.On the one hand____, On the other hand____,However, we have figured out many ways to _____.Firstly, ____So long as____.Secondly____, Thirdly____.In fact____, That is because ____.In a word,________ .

圖表作文模板:

As can be clearly seen from the graph/table/chart(As is shown in the table/figure), great changed have taken place in_______, The _________ have/has skyrocketed/jumped from _____ to _____.When it comes to the reasons for the changes, different people give different explanations.Here I shall just give a few.To begin with, ______What’s more,___________, Last but not least, ________.While it is desirable that ___________, there are still some problems and difficulties for __________ Firstly, __________ ,In addition, __________ ,In a word, __________.綜合運用篇

1.Along with the advance of the society more and more problems are brought to our aattention, one of which is that....隨著社會的不斷發展,出現了越來越多的問題,其中之一便是____________。

2.As to whether it is a blessing or a curse, however, people take different attitudes.aa

然而,對于此類問題,人們持不同的看法。(Hold different attitudes 持不同的看;Come up with different attitudes 有不同的看法)

4.People are attaching more and more importance to the interview during job hunting

求職的過程中,人們慢慢意識到面試的重要性。

5.As to whether it is worthwhile....., there is a long-running controversial debate.It is quite natural that people from different backgrounds may have divergent attitudes towards it.關于是否值得___________的問題,一直以來爭論不休。當然,不同的人對此可能持不同的觀點。

6.In the process of modern urban development, we often find ourselves in a dilemma.在都市的發展中,我們往往會陷入困境。

7.Recently the phenomenon has aroused wide concern, some people are in alarm that....最近,這種現象引起了人們的廣泛關注,有人開始擔心______________。

8.The human race has entered a completely new stage in its history, with the increasingly rapid economic globalization and urbanization, more problems are brought to our attention.人類進入了一個歷史的嶄新的階段,經濟全球化、都市化的速度不斷加快,隨之給我們帶來了很多問題。

9......plays such an important role that it undeniably becomes the biggest concern of the present world, there comes a question, is it a blessing or a curse?“

_______顯得非常重要而成為當今世界所關注的最大的問題,這是無可厚非的。不過,問題是:”我們該如何抉擇?“

10.Now we are entering a new era, full of opportunities and challenges,現在我們正在進入一個充滿機會和挑戰的新時代。

展現問題篇

問題的常用詞:question, problem, issue

1.Recently, the issue of......has been brought into public focus.近來,_______的問題引起了社會的廣泛關注。

2.Now we are entering a brand new era full of opportunities and innovations, and great changes have taken place in people's attitude towards some traditional practice.現在我們進入了一個充滿機遇和創新的嶄新時代,很多人對某些傳統的看法也發生了很大改變。

5.At present, some people think....while others claim...Both sides have their merits.目前,一些人認為_______而另一些人則認為_______。其實,兩種觀點都其可取之處。

6.People rarely reach an absolute consensus on such a controversial issue.對于這種極具爭議的話題,我們很難作出絕對的回答。

12.There is a good side and a bad side to everything, it goes without saying that...萬事萬物都有其兩面性,所以,勿庸置疑,____________。

22.People, who advocate that..., have their sound reasons(grounds)

堅持認為______的人也有其說法(依據)。

觀點的用詞:Attitude, opinion, 與其搭配的動詞以及詞組:Take, have, come up with,set forth, put forward等。

28.But on the other hand, there are also quite a few people who strongly advocate that..,.30.However, there are a large number of people who hold a different view concerning this case.然而,很多人對此有不同的看法。

問題用詞:Issue, phenomenon,后接介詞, on, over等。

38.Personally, I side with the latter(former)opinion...就我個人而言,我支持后者(前者)___________。39.Personally, I am in favor of the former point of view.就我個人而言,我較同意前一種看法。40.To my point of view 我認為47.When considering opinions of both sides, I am inclined to...對兩種觀點進行綜合考慮之后,我較認同_________________。48.If it is up to me to make a choice between...and...I would rather choose...over...如果要我在____和____之間進行選擇,我寧愿選擇_____而不會選擇______。表達不確定的用詞:May, seem, be likely to, possible, probably, perhaps, be said that, be said to...51.in my mind , the following factors/reasons/causes need to be taken into consideration

我認為,我們需要考慮下列因素/原因:

52.There are several reasons for this phenomenon/why...-(as follows).造成這種現象的原因如下:

53.And I would like to present two explanations for this:

對于此,我有如下兩點愚見:

55.There are numerous reasons why ____, and I would like to explore a few of the most important ones here.為什么___________,原因很多,在此列舉幾個較為重要的原因。

81.As the proverb goes: ”every coin has its two sides“,....is no exception.俗語有云:”萬事萬物都有兩面性。“ ________也不例外。

88.....undoubtedly plays an increasing significant role in modern life.不容置疑,_______在現代生活中不斷顯示出起重要性。

89.With the development of the society,...is increasingly important.90.The merits of this is obvious...其好處顯而易見。

91.As we know,...bring many benefits and convenience to people.眾所周知,_______ 為我們的生活帶來很多好處。

92.There are no less than three advantages in..as rendered below.97.Some people deem it is a dangerous signal and call for public awareness of the negative effects it has brought about.有些人認為這是一種危險的信號,因此需關注其給社會帶來的負面影響。

98.Of course, nothing in the world is perfect, so is...104.From what has been discussed above, we may finally draw the conclusion that...通過以上的討論,我們可以得出如下結論,___________。

108.From what has been discussed above, we can see...does more harm than good to us.Therefore, I strongly approve of the motion that...從以上論述可知,_____ 對我們百害而無一利。

”比如"的表達方式:

For example,For instance,It can be given a concrete example,Take...for an example, it is a very obvious case

There is one impressive example I want to mention here.Let's see an example.It is best illustrated if given the following example.Let me provide an example.Perhaps the most important example of...is that...As I remember,/ I now still remember that.I will never forget that

To illustrate this, there is an example that is very persuasive.An instance that accompanies this reason is that...An example can give the details of this argument,...It is a forceful example to demonstrate the importance of...History presented many examples of...In order to see this point clearly, let us see an example.

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