CA6140車床831004車床法蘭盤機加工工藝和鉆Φ4、Φ6孔專用夾具設計【05】

CA6140車床831004車床法蘭盤機加工工藝和鉆Φ4、Φ6孔專用夾具設計【05】,05,CA6140,車床,831004,法蘭盤,加工,工藝,專用,夾具,設計 機械制造工藝技術與企業(yè)發(fā)展 　機械制造加工企業(yè)的生產過程是把原材料和半成品變成成品的一系列過程的總稱。要生產一種新產品,必須進行一系列的工作,其中包括產品的圖紙設計、生產的組織準備和技術準備、原材料及外購件及標準件的供應、毛坯的制造(鑄造及鍛造等) 、零件的機械加工和熱處理以及裝配等。在工廠的生產過程中占重要地位的是工藝過程。它一般包括鍛壓、鑄造、沖壓、焊接、機械加工、熱處理、裝配和試驗等。 由于加工條件和加工方法的區(qū)別,任何零、部件的工藝過程是多種多樣的。如果確定了其中最合理的一個工藝過程,將其有關內容用表格文字形式表示,也稱作工藝規(guī)程。機械制造工業(yè)中,根據(jù)生產規(guī)模的大小不同,一般可分三種生產類型:即單件生產、成批生產和大量生產。 (1) 單件生產。單個制造不同結構類型和尺寸的產品,或者是數(shù)量較少,并且很少重復制造生產,如非標準設備、專業(yè)生產流水線,科研試制產品及個別零、配件的制造。此種工藝過程較為簡單,一般只有工藝過程卡。 (2)成批生產。成批量制造相同的零件的生產過程。每批所制造的相同零件的數(shù)量稱為批量。成批量生產又分小批量生產、中批量生產和大批量生產三種。小批量生產在工藝上接近于單件生產,大批量生產在工藝上接近于大量生產,中批量生產介于單件生產和大量生產之間,一般要有工藝過程卡,重點工序要有工序卡。 (3) 大量生產。每年生產制造相同的產品,產品的數(shù)量很多,大多數(shù)生產區(qū)域及工作地點經(jīng)常是重復地進行某一種零件的某一道工序,這種生產過程稱為大量生產。此種生產過程的工藝文件比較詳細,每道工序都有工序卡。 不同的生產類型,要求生產組織、生產管理、車間布置、毛坯、設備、工具和加工方法等方面也有所不同。因而所有加工企業(yè)都非常重視工藝流程的設計。因為這不僅僅代表一個企業(yè)的技術發(fā)展水平,而且對提高企業(yè)生產效率、降低生產成本起到至關重要的作用。隨著現(xiàn)代科學技術的發(fā)展和計算機技術的廣泛推廣應用,目前許多企業(yè)的工藝人員已研制開發(fā)出機械制造工藝的軟件,以使制造工藝過程更加科學。 機械制造工藝設計是機械行業(yè)的一項經(jīng)常性技術工作,設計過程中要求綜合考慮加工質量、生產效率和經(jīng)濟性的影響。在實際工作中,很多技術人員片面強調加工質量、生產效率,忽略了經(jīng)濟性,導致設計出的工藝方案加工質量很好,生產效率很高,但經(jīng)濟效益很差的情況。因此有必要強調一下經(jīng)濟性的觀點,在進行工藝設計過程中做到必要的技術經(jīng)濟分析。因此在制訂零件加工的工藝方案時,在保證加工質量的前提下,我們可以提出多種工藝方案。通過對方案的技術經(jīng)濟分析來幫助我們確定出技術上先進,經(jīng)濟上合理的方案來。工藝技術經(jīng)濟分析的方法,對一般零件可利用各種技術經(jīng)濟指標,如:每條生產線的年產量、每臺機床的年產量、每個工人的年產量、每平方米生產面積的年產量、材料利用率、設備負荷率等,對各種方案予以評價;對生產綱領較大的:要通過工藝成本估算和基本投資情況予以評定。工藝成本的組成及計算生產成本是制造一個零件所需費用的總和,其中,約75 %是與工藝過程直接有關的生產費用,稱為工藝成本,在比較不同工藝方案的經(jīng)濟性時,只需分析工藝成本即可,工藝成本由可變費用和不變費用兩部分組成?？勺冑M用是與年產量有關并與之成正比例的費用,包括材料費、工人工資、電費、通用機床折舊率和維修費、通用夾具和刀具費等;不變費用是與年產量無直接關系的費用,包括調整工人的工資、專用機床折舊費和維修費、專用刀具和夾具費等。工藝技術與信息技術、管理技術緊密結合,使先進制造生產模式獲得不斷發(fā)展,反過來它也影響并促進機械制造工藝技術的不斷革新。 企業(yè)是靠效益求生存靠質量求發(fā)展,所以質量是企業(yè)發(fā)展的核心亦始終是機械制造工藝技術的中心,機械制造工藝技術的發(fā)展首先要圍繞解決產品的質量問題,我們常說降低成本,而圍繞質量加強機械制造工藝技術和管理是降低成本的最佳技術路線,如果甩開質量,甩開機械制造工藝技術和管理去降低成本,那不可能是最佳路線,所以質量是機械制造工藝技術工作中非常重要的中心環(huán)節(jié),是機械制造工藝技術工作者應首先考慮的問題。無論是采用先進的制造技術還是技術改造,離開質量為重點的機械制造工藝技術改造是失敗的技術改造,質量應該成為機械制造工藝技術工作中首先要保證的,這樣機械制造工藝技術工作才可能健康發(fā)展,從而使整個企業(yè)不斷發(fā)展壯大 The machine manufacture processing technology and the enterprise develop The machine manufacture processes the enterprise the production process is turns raw material and the half-finished product the end product a series of processes always to call. Must produce one new product,Must carry on a series of work,In which including product blueprint design, production organization preparation and technical preparation, raw material and outsourcing and standard letter supply, semifinished materials manufacture (casting and forging and so on), components machine-finishing and heat treatment as well as assembly and so on. Occupies the important status in the factory production process is the technological process. It includes the forging and stamping, the casting, the ramming, the welding, the machine-finishing, the heat treatment, the assembly and the experiment generally and so on. As a result of processing condition and processing method difference,Any zero, the part technological process is many and varied. If has determined a most reasonable technological process,Indicated its related content with the form writing form,Also is called as the technological process. In machine manufacture industry,Is different according to the scale of production size,General separable three kind of production type:Namely piecework, mass productions and mass productions. (1) Piecework. Makes the different structure type and the size product individually,Or is quantity are few,And very little redundant manufacture production,If non-standard equipment, specialized production assembly line,Scientific research trial manufacturing product and individual zero, fitting manufacture. This technological process is simple,Generally only then technological process card. (2) Mass productions. Measures the manufacture same components in groups the production process. Each batch of institutes make identical part quantity is called the batch. Measures the production to divide the small batch production in groups, the volume production and the mass produces three kinds. The small batch production approaches in the craft in the piecework,The mass production approaches in the craft in the mass productions,The volume production is situated between between the piecework and the mass productions,Must have the technological process card generally,The key working procedure must have the travel chart. (3) Mass productions. Every year manufacturing same product,Product quantity are very many,The majority production region and the operating location are frequently repeatedly carry on some kind of components some working procedure,This kind of production process is called the mass productions. This kind of production process technological document quite is detailed,Each working procedure all has the travel chart. Different production type,Request aspects and so on production organization, production management, workshop arrangement, semifinished materials, equipment, tool and processing method also differ from. Thus all processing enterprise all extremely takes the technical process the design. Because this represents an enterprise not merely the state-of-art,Moreover to enhances the enterprise production efficiency, reduces the production cost to play the very important role. Along with modern science and technology development and computer technology widespread promoted application,At present many enterprise's craft personnel have developed develop the machine manufacture craft the software,Causes the manufacture technological process to be more scientific. The machine manufacture technological design is a mechanical profession regular technical work,In the design process requests the overall evaluation processing quality, the production efficiency and the efficient influence. In practical work,The very many technical personnel lays undue stress on the processing quality, the production efficiency,Has neglected the efficiency,Causes the craft plan processing quality which designs to be very good,The production efficiency is very high,But economic efficiency very bad situation. Therefore has the necessity to emphasize the efficient viewpoint In carries on in the technological design process to achieve the essential technical economic analysis. Therefore in time making components processing craft plan,In under guarantee processing quality premise,We may propose many kinds of craft plan. Through helps us to the plan technical economic analysis to determine in the technology advanced,In the economy the reasonable plan comes. Processing technology economic analysis method,May use each kind of technical economic indicator to the general components,For example:Each production line annual output, each engine bed annual output, each worker's annual output, each square meter producing area annual output, material use factor, equipment load factor and so on,Appraises to each kind of plan;To produces the guiding principle in a big way:Must evaluates through the craft cost estimate and the capital investment situation. The craft cost composition and the computation production cost is makes components to need the expense the sum total,Among them,75% is approximately and the technological process direct related production cost,Is called the craft cost,When quite different craft plan efficiency,Only must analyze the craft cost then, The craft cost is composed by the variable cost and the invariable expense two parts. The variable cost is related and becomes the proportion with the annual output with it the expense,Including the materials expenses, the worker wages, the electrical bill, the general engine bed depreciation rate and the maintenance cost, the general jig and the cutting tool spend and so on;The invariable expense is and the annual output not direct relations expense,Including adjusts worker's wages, the special purpose machine amortization fund and the maintenance cost, the special-purpose cutting tool and the jig spends and so on. Processing technology and information technology, management technology close union,Causes the advanced manufacture production pattern to obtain develops unceasingly,In turn it also affects and promotes the machine manufacture processing technology unceasing innovation. The enterprise is depends on the benefit to strive for the survival to depend on the quality to strive for the development,Therefore the quality is the core which the enterprise develops also throughout is the machine manufacture processing technology center,The machine manufacture processing technology development first must revolve the solution product the quality question,We often said reduces the cost,But revolves the quality to strengthen the machine manufacture processing technology and the management is reduces the cost the best technical route,If casts off the quality,Casts off the machine manufacture processing technology and manages reduces the cost,That not impossible is the best route,Therefore the quality is in the machine manufacture processing technology work the extremely important center link,Is question which the machine manufacture processing technology worker should first consider. Regardless of is uses the advanced technique of manufacture or the technological transformations,Leaves the quality for the key machine manufacture processing technology transformation is the defeat technological transformations,The quality should become in the machine manufacture processing technology work first to need to guarantee,Such machine manufacture processing technology work only then is possible the healthy development,Thus makes the entire enterprise to grow strong unceasingly