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    FULFILL ORDERFULFILL ORDERManufacturing Process

    Manufacturing System

    Motion and Time Study

    Facilities La out

    Manufaktur ?Manufaktur ?

    RI 1321 Proses Manufaktur - Minggu 1 2

    Definisi ManufakturDefinisi Manufaktur

    Kata-kata manufaktur berasal dari bahasa latin (manus =

    hand, factus =made)

    Definisi manufacturing oleh Random House

    Websters College Dictionary:

    The making of goods or wares by manual labor or by

    R I 1 32 1 P ro se s M an uf ak tu r -M ing gu 1 3

    machinery, esp. on a large scale.

    Definisi dari National Science Foundations Workshop:

    The creation and integration of informational and physical

    processes to create economic wealth through the production of

    artifacts. NSF 93-69.

    Contoh Produk ManufakturContoh Produk Manufaktur

    R I 1 32 1 P ro se s M an uf ak tu r -M ing gu 1 4

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    Manufaktur (Technology Perspective)Manufaktur (Technology Perspective)

    R I 1 32 1 P ro se s M an uf ak tu r -M ing gu 1 5

    Manufaktur (Economic Perspective)Manufaktur (Economic Perspective)

    R I 1 32 1 P ro se s M an uf ak tu r -M ing gu 1 6

    Klasifikasi Industri Manufaktur (1)Klasifikasi Industri Manufaktur (1)Berdasarkan North American Industry Classification System (NAICS)Berdasarkan North American Industry Classification System (NAICS)

    Food manufacturing,

    Beverage & tobacco productmanufacturing,

    Textile mills,

    Wood productionmanufacturing

    Paper manufacturing

    Fabricated metal productmanufacturing

    Machinery manufacturing

    Computer and electronicproduct manufacturing

    Electrical equip, appliance &component manufacturing

    R I 1 32 1 P ro se s M an uf ak tu r -M ing gu 1 7

    Petroleum and coal productionmanufacturing

    Chemical manufacturing

    Plastic and rubberproduct manufacturing

    Non-metallic mineralmanufacturing

    Primary metalmanufacturing

    Transportation equipmentmanufacturing

    Furniture and related productmanufacturing

    Miscellaneousmanufacturing

    Klasifikasi Industri Manufaktur (2)Klasifikasi Industri Manufaktur (2)

    Primary vs. secondary manufacturing Primary manufacturing adalah industri yang menghasilkan produk berupa

    material yang akan diolah lebih lanjut, seperti steel mill s, textile mills,plastics.

    Secondary manufacturing industri yang menghasilkan komponen atauproduk fungsional.

    Discrete manufacturing vs. continuous manufacturing

    R I 1 32 1 P ro se s M an uf ak tu r -M ing gu 1 8

    Discrete manufacturing adalah produsen komponen, part atau singleproduct, seperti gir, mobil, pesawat udara, dll.

    Continuous manufacturing adalah produsen produk yang sifatnyakontinu seperti karet, plastic, sheet metal working, dll.

    Mechanical manufacturing, vs. electronics manufacturingand chemical manufacturing

    Klasifikasi berdasarkan disiplin ilmu

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    Klasifikasi Industri Manufaktur BerdasarkanKlasifikasi Industri Manufaktur Berdasarkan

    Standard ISIC 2 DigitStandard ISIC 2 Digit

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    Proses Vs System ManufakturProses Vs System Manufaktur

    R I 1 32 1 P ro se s M an uf ak tu r -M ing gu 1 1 0

    Jenis Material yang dipergunakanJenis Material yang dipergunakan

    Metals Ceramics

    and othersPlastics Composites

    F er ro us No nfer ro us Thermoplastic Thermoset Polymer Matrix

    Metal Matrix

    Ceramic Matrix

    R I 1 32 1 P ro se s M an uf ak tu r -M ing gu 1 1 1

    Stainless

    Steels

    Tool and

    Die Steels

    Cast Irons

    Oxides

    Nitrides

    Carbides

    Glasses

    Graphite

    Diamond

    Alumi num

    Copper

    Magnesium

    Titanium

    Polypropylene

    Nylon

    ABS

    PVC

    Epoxy

    Phenolic

    Silicone

    HalHal--hal yang akan dipelajarihal yang akan dipelajari

    Mainly secondary, discrete, and mechanicalmanufacturing processes Casting, Forging, Rolling, Extrusion, Sheet

    Metal Working, Machining, Non-traditional

    Machining, Polymer Processing, Powder

    R I 1 32 1 P ro se s M an uf ak tu r -M ing gu 1 1 2

    eta urgy nter ng, rocess ng o eramcsand Composites, and Joining.

    Common aspects of manufacturingprocesses Dimensioning and Tolerance, Engineering

    Metrology, Design of Experiment, ProcessCapability, Statistical Process Control, etc.

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    Manufacturing ProcessManufacturing Process

    1. Subtractive Process

    Machining: Turning, milling, boring, grinding

    Non-traditional machining: EDM, chemicalmilling, waterjet, etc.

    Micro-electronics processes: Primarily etchingtype processes using either masks or beam

    2. Additive Process

    Rapid Prototyping Very flexible to part

    3. Continuous Process

    Pultrusion of composites

    Metal Extrusion Net shape process

    Plastic Extrusion

    Czochralski Crystal Growth

    Continuous Casting

    4. Net shape Process

    R I 1 32 1 P ro se s M an uf ak tu r -M ing gu 1 1 3

    s ape; usua y mte n matera c oces; sowrates; fully automated

    Advanced Composites Processes Combination of additive and net shapeprocesses

    Microelectronics Processes Physical andchemical vapor deposition processes andcoating methods

    Joining & Assembly Broad category includeswelding, adhesives, and mechanical assembly

    Solids: Metal Forming, Powders, Others

    Liquids: Casting, Injection Molding, Others

    Mixtures: Infiltration, Viscoelastics, Others

    Characteristics

    Hard tooling

    Solid forming very fast cycle time

    Thermal processes slower and depend uponcooling rate

    Dimensional control is not as good asmachining

    Injection MouldingInjection Moulding

    RI 1321 Proses Manufaktur - Minggu 1 14

    Metal CastingMetal Casting

    RI 1321 Proses Manufaktur - Minggu 1 15

    ForgingForging

    R I 1 32 1 P ro se s M an uf ak tu r -M ing gu 1 1 6

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    Sheet Metal StampingSheet Metal Stamping

    R I 1 32 1 P ro se s M an uf ak tu r -M ing gu 1 1 7

    Plastic ExtrusionPlastic Extrusion

    R I 1 32 1 P ro se s M an uf ak tu r -M ing gu 1 1 8

    Metal ExtrusionMetal Extrusion

    R I 1 32 1 P ro se s M an uf ak tu r -M ing gu 1 1 9

    WeldingWelding

    R I 1 32 1 P ro se s M an uf ak tu r -M ing gu 1 2 0

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    Blanking and PunchingBlanking and Punching

    R I 1 32 1 P ro se s M an uf ak tu r -M ing gu 1 2 1

    MillingMilling

    R I 1 32 1 P ro se s M an uf ak tu r -M ing gu 1 2 2

    Water Jet MachiningWater Jet Machining

    R I 1 32 1 P ro se s M an uf ak tu r -M ing gu 1 2 3

    ManufakturManufaktur Mengapa penting ?Mengapa penting ?

    Proses manufaktur adalah kegiatan inti dari sebuah perusahaan.

    Adanya kebutuhan terkait dengan Concurrent Enginnering

    Design for X: manufacture, assembly, environment, etc.

    61% alumni Teknik Industri ITS (berdasarkan hasil tracer study 2005 yangmelibatkan 86 responden lulusan dalam 4 tahun terakhir) bekerja di bidangmanufaktur

    R I 1 32 1 P ro se s M an uf ak tu r -M ing gu 1 2 4

    esgn ngneers, ro uct ngneers, esearc an eve opment, anuactur ngEngineer, Planning, Safety, Materials, etc.

    6% Dosen/Wiraswasta/Pegawai Pemerintah, dll.

    33% Sektor Jasa Konsultan. Credit Company, Bank, dll

    Di Amerika Serikat Industri menyumbangkan 20% GDP

    Sektor Jasa : 70% U.S. GNP (retail, transportation, banking, education,communication, insurance and government).

    Pertanian, Konstruksi, dan lain-lain : 10%

    Bagaimana dengan peranan industri di Indonesia ?

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    R I 1 32 1 P ro se s M an uf ak tu r -M ing gu 1 2 5

    Proporsi pekerjaan Alumni TI ITS

    33%

    6%

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    61%

    Manufaktur Jasa Dosen / Wiraswasta

    Responden : 86 orang lulusan periode 2001-2004

    CIMOSA (PRODUK SEBAGAICIMOSA (PRODUK SEBAGAI

    DASAR)DASAR) Sebuah industri manufaktur diawali/didorong oleh

    keberadaan produk yang dihasilkan (dijual) & adanya siklus

    hidup produk

    Industri manufaktur umumnya menghasilkan produk dalam

    jumlah besar dan sebagian part (pembentuk produk) dapat

    berasal dari perusahaan lain.

    Keputusan paling sederhana keputusan buat-beli

    Produk

    Part 1 Part 2

    Part Be li Part Buat

    Part HasilPerakitan

    Part HasilForging

    Part HasilTurning

    ... Part n

    Keputusan buat beli make or buy

    Perkenalan

    Pertumbuhan

    Maturity

    Penurunan

    Inovasi

    CIMOSA (ARSITEKTUR BISNIS DALAMCIMOSA (ARSITEKTUR BISNIS DALAM

    MANUFAKTUR)MANUFAKTUR) Apabila sebuah industri telah berjalan untuk menerima order,

    melakukan produksi dan mengirimkan barang jadi kepada customer

    maka kebutuhan pengaturan menjadi semakin bertambah dan

    kompleks

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    DEFINISI SISTEM PRODUKSIDEFINISI SISTEM PRODUKSI

    Serangkaian peralatan, prosedur, operator/peopleuntuk menyelesaikan seluruh operasi manufakturdalam sebuah perusahaan

    Kategori:

    Fasilitas abrik dan eralatan dalam fasilitas danbagaimana penataan fasilitas tersebut (plant layout)

    Sistem penunjang manufaktur serangkaianprosedur yang dipergunakan perusahaan untukmengelolla produksi dan menyelesaikanpermasalahan logistik dan teknis dalam pemesanan

    material, aliran kerja dalam pabrik, dan memastikanbahwa produk memenuhi standar kualitas

    SISTEM PRODUKSISISTEM PRODUKSI

    SistemPenunjang

    Manufaktur

    Fasilitas

    Produksi

    FASILITAS SISTEM PRODUKSIFASILITAS SISTEM PRODUKSI

    Fasilitas terdiri dari pabrik, mesin produksi, peralatan,material handling, peralatan inspeksi, dan juga sistemkomputer yang mengendalikan operasi manufaktur

    Tata letak fasilitas cara pengaturan peralatan secara

    untuk perangkat non-fisik misalnya software (virtuallayout)

    Sistem produksi pengkategorian/penggolonganperalatan dan pekerja dalam pabrik

    Lini produksi

    Stasiun kerja tunggal dan pekerja/operator

    SISTEM PRODUKSISISTEM PRODUKSI

    Terdapat 3 kategori dalam partisipasi humanoperator dalam proses yang ada di sistemproduksi:

    1. Sistem kerja manual seorang pekerja

    melakukan satu atau lebih aktivitas ker a tan aalat bantu mekanik-elektrik, tetapimenggunakan hand tools

    2. Sistem mesin dan pekerja seorang pekerjamengoperasikan peralatan yang menggunakansumber energi untuk pergerakannya

    3. Sistem otomasi sebuah proses yang dilakukanmesin tanpa partisipasi langsung dari operator

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    SISTEM KERJA MANUALSISTEM KERJA MANUAL

    Penggunaan

    hand tools

    Pekerja

    ProsesUnit pekerjaan

    awal

    Unit pekerjaan

    selesai

    SISTEM MESIN & PEKERJASISTEM MESIN & PEKERJA

    Mesin

    Pekerja

    ProsesUnit pekerjaan

    awal

    Unit pekerjaan

    selesai

    SISTEM OTOMASISISTEM OTOMASI

    Pekerja datang

    secara periodik

    Mesin

    otomatis

    Unit pekerjaan

    awal

    Unit pekerjaan

    selesai

    SISTEM PENUNJANG MANUFAKTURSISTEM PENUNJANG MANUFAKTUR

    Melibatkan siklus aktivitas pengolahan informasidengan empat fungsi sebagai berikut:

    1. Fungsi bisnis pemasaran dan penjualan,penerimaan order, akuntansi,customer billing(tagihan)

    2. Design produk penelitian dan pengembangan,design engineering, pembuatan prototype

    3. Perencanaan manufaktur perencanaan proses,perencanaan produksi, MRP, perencanaan kapasitas

    4. Pengendalian manufaktur kendali lantai produksi,pengendalian persediaan, pengendalian kualitas

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    SIKLUS PEMROSESAN INFORMASISIKLUS PEMROSESAN INFORMASI

    DALAM SISTEM PENUNJANGDALAM SISTEM PENUNJANG

    MANUFAKTURMANUFAKTUR

    Desain

    Produk

    Pesanan dari

    customer

    Perencanaan

    manufakturFungsi bisnis

    Pengendalian

    manufaktur

    Sistem

    Produks

    i

    OTOMASI SISTEM PRODUKSIOTOMASI SISTEM PRODUKSI

    Terdapat dua kategori otomasi dalam sistem

    produksi:

    1. Otomasi lantai produksi dalam pabrik

    . omputer sas s stem penun ang manu a tur

    Apabila kedua hal tersebut diintegrasikan

    maka sistem akan disebut sebagai

    Computer-Integrated Manufacturing (CIM)

    COMPUTER INTEGRATEDCOMPUTER INTEGRATED

    MANUFACTURINGMANUFACTURING

    Sistem Computer

    Sistem

    penunjang

    manufaktur

    Aplikasi

    komputer

    potensial

    Produksi Integrated

    ManufacturingFasilitas:

    Peralatan

    Pabrik

    Potensi

    aplikasi

    otomasi

    KOMPONEN SISTEM MANUFAKTURKOMPONEN SISTEM MANUFAKTUR

    OTOMATISOTOMATIS

    Contoh:

    Peralatan permesinan otomatis

    Transfer lines

    Sistem perakitan otomatis

    o o n us r yang me a u an operas prosesatau perakitan

    Material handling dan sistem penyimpananotomatis untuk mengintegrasikan operasimanufaktur

    Sistem inspeksi otomatis (automatic inspectionsystems ) untuk pengendalian kualitas

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    SISTEM PENUNJANG MANUFAKTURSISTEM PENUNJANG MANUFAKTUR

    TERKOMPUTERISASITERKOMPUTERISASI

    Tujuan:

    Mengurangi upaya yang bersifat manual danclerical dalam design produk, perencanaanmanufaktur, perencanaan dan pengendalian

    ,

    Mengintegrasikan computer-aided design (CAD)dengan computer-aided manufacturing (CAM)dalam kerangka CAD/CAM

    CIM mengintegrasikan fungsi CAD/CAM ke

    dalam fungsi bisnis perusahaan

    TENAGA KERJA MANUAL DALAMTENAGA KERJA MANUAL DALAM

    SISTEM PRODUKSISISTEM PRODUKSI

    Apakah ada tempat bagi pekerja manual dalam

    sistem produksi modern?

    Jawabnya: YA

    a am ua aspe :

    1. Pekerja manual dalam operasi pabrik

    2. Pekerja dalam sistem penunjang manufaktur

    PEKERJA MANUAL DALAM OPERASIPEKERJA MANUAL DALAM OPERASI

    PABRIKPABRIK

    Terdapat kecenderungan untuk menggantikanpekerja manual dengan sistem otomasi

    Pertimbangan apa memanfaatkan pekerja manual?

    Beberapa negara memiliki tingkat upah rendah dan

    Aktivitas operasi secara teknologi terlalu sulit untukdibuat otomasi

    Siklus hidup produk pendek

    Produk khusus (customized) perlu fleksibilitas manusia

    Mengikuti fluktuasi jumlah permintaan produk

    Mengurangi resiko produk gagal/cacat

    PEKERJA DALAM SISTEM PENUNJANGPEKERJA DALAM SISTEM PENUNJANG

    MANUFAKTURMANUFAKTUR

    Perancang produk yang menghasilkan kreativitasdalam pekerjaan design

    Manufacturing engineer yang melakukan

    Perancangan peralatan dan mesin produksi Perencanaan metode dan urutan produksi

    Pemeliharaan peralatan

    Pemrogramaan dan melakukan operasi komputer

    Pekerjaan proyek teknik

    Manajemen pabrik

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    LINGKUP KAJIAN SISTEMLINGKUP KAJIAN SISTEM

    MANUFAKTURMANUFAKTURLingkup Kajian Sistem Manufaktur seharusnya

    Termasukinteraksi

    dengan fungsibisnis lainnya

    Sales &Marketing

    AccountingSupplier

    Sistem

    Penunjang

    Manufaktur

    Sistem Penunjang

    Manufaktur

    Sistem Pengendalian

    Kualitas

    Level Enterprise

    Level Factory

    Groover

    Fasilitas

    Sistem

    Produksi Sistem Manufaktur

    Teknologi

    Otomasi & Kendali

    Teknologi

    Material Handling

    Proses manufaktur dan operasi perakitan

    Sistem manufaktur terdiri dari seluruh komponen sistem produksiberikut dengan fungsi interaksi dengan fungsi bisnis lainnya secara

    keseluruhan secara vertikal dan horizontal

    Motion and Time StudyMotion and Time Study

    Motion and time study can reduce and control costs, improve workingconditions and environment, and motivate people.

    The basic purpose is to improve the work and to reduce waste .

    1. Motion analysis techniques

    2. Time study techniques

    3. Uses of time standards.

    Manufacturing management and engineering students are being preparedto design work stations, develop efficient and effective work methods,establish time standards, balance assembly lines, estimate labor costs,develop effective tooling, select proper equipment, and layoutmanufacturing facilities.

    However, the most important thing is to learn how to train productionworkers in these skills and techniques so they can become motion andtime conscious.

    Motion study offers a great potential for savings in any area ofhuman effort. We can reduce the cost by combining elements ofone task with elements of another.

    Motion study uses the principles of motion economy to developwork stations that are friendly to the human body and efficient intheir operation.

    Motion stud must consider the o erators safet

    Time study can reduce cost significantly well. Time standards aregoals to strive for. In organizations that operate without timestandards, 60% performance is typical.

    When time standards are set, performance improves to an averageof 85%. This is a 42% increase in performance:

    85 % - 60 %------------------ = 42% performance increase.

    60%

    Incentive systems can improve performance even further.

    Incentive system performances average 120%, that is another42% increase in performance:

    120% - 85%

    ---------------------- = 42% performance increase.85%

    Manufacturing plants with no standards average 60% performance.

    Manufacturing plants with time standards average 85% performance.

    Manufacturing plants with incentive systems average 120% performance.

    If additional production output is required, dont buy moremachinery, dont add a second shift, and dont build a new plant.

    Just establish a motion and time study program.

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    Motion and time study is considered to be the backbone of industrial engineering,industrial technology, and industrial management programs because theinformation that time studies generate affects so many other areas, including thefollowing:

    1. Cost estimating2. Production and inventory control3. Plant layout4. Materials and processes5. Quality

    . aety

    Motion study comes first before the setting of time standards. Motion study is adetailed analysis of the work method in an effort to improve it.

    Motion studies are used to

    1. Develop the best work method.2. Develop motion consciousness on the part of all employees.3. Develop economical and efficient tools, fixtures, & production aids.

    4. Assist in the selection of new machines and equipment.5. Train new employees in the preferred method.6. Reduce effort and cost.

    Motion study is for cost reduction, and time study is for costcontrol. Motion study is the creative activity of motion and timestudy.

    Motion study is design, while time study is measurement.

    Once the importance of motion and time study is understoodand accepted, the techniques of motion and time study are

    .

    Flow diagramsMulti activity chartsOperation chartsFlow process chartsProcess chartsOperations analysis chart

    Work station designMotion economyFlow patternsPredetermined time standards system (PTSS).

    Thetechniques of time study start with the last motionstudy technique,whichshows the close relat ionship between mot ion study and t ime study. Thetechniquesof time studyare:

    1.Predetermined time standards system (PTSS)2.Stopwatch time study3.Standard data formula time standards4.Work sampling time standards5.Expert opinion and historical data time standards.

    WHAT IS A MOTION STUDY?

    Motion studies are performed to eliminate waste. Before any improvement inquality or quantity of output, any study of operations time, any scheduling ofwork or balancing of workload or any calculation of standard time,a study ofthe current and proposedmethod is required.

    Studies of overall factoryflow or process,called macromotion studies, andthenadditional studies of detail or operations, called micromotion studies, shouldbecompletedfor a project.

    Motion studies were conducted by Frank and Lillian Gilbreth about a centuryago in a search for the one best way. It is important to note that such studiesseek to minimize and simplify manual efforts.

    Macromotion Study

    Any process can be studied by dividing it into process activity. Althougheach activity is different, depending on the product, there are fiveclasses of activities that are included i n all processes. Savings, may befound in the process by reorganizing act ivities.

    These activities found in ever se uence of rocesses are

    Operations Changes in the properties of the product

    Transportations Changes in the location of the product

    Inspection Confirmation that change fits to specification

    Delay Wait for start of operation, transportation, or inspection

    Storage Wait until needed

    When the process is first studied, each activity is recorded andarranged into one of the five classes. All observed acti vities arerecorded, and activities not done are not recorded. The purpose ofeach activity should be studied.

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    Typically, the questions Who? What? Where? When? Why? and How? must beanswered. Next, each event is observed in the following sequence:

    Can the activity be eliminated? If not,

    Can the activity be combined and done with another activity? If not,

    Can the activity be rearranged so occur in the sequence at an easier time? If not.

    Can the activity be simplified with shorter distances, mechanical assist, or reducedcomplexity?

    Once these questions are asked and the improvement sequence is defined, it isnecessar to draw a chart or dia ram that shows the motion im rovements.

    Process Flow Plan A plan-view plant layout with activities overlaid

    Process Operations Chart The sequence of serial and parallel operations

    Process Chart All serial activities on a preprinted form

    Flow Process Chart All serial and parallel activities on a single page

    Work Cell Load Chart A plan view with repetitive operations

    Route Sheet A planning tool for scheduling operations

    Micromotion Study Considerable wasted motion and idle time can occur within an operation. This time

    cant be found with macromotion studies because is usually within one processoperation. The improvement is gained from reducing the operation cycle time.

    WHAT IS A TIMEWHAT IS A TIMESTANDARD?STANDARD?

    The definition of a time standard is the time required to producea product at a work station with the following three conditions:

    (1) a qualified, well-trained operator,

    (2) working at a normal pace,

    (3) doing a specific task.

    These three conditions are essential to the understanding of timestudy.

    The importance of time standards can be shown by the threestatistics 60%, 85%, and 120% performance.

    The time standard is one of the most important pieces ofinformation produced in the manufacturing department. It is usedto develop answers for the following problems:

    WHAT IS A TIME STANDARD?WHAT IS A TIME STANDARD? Continue..Continue..

    Determining the number of machine tools to buy

    Determining the number of production people to employ

    Determining manufacturing costs and selling prices

    Scheduling the machines, operations, and people to do the job and deliver ontime

    Determining the assembly line balance, determining the conveyor belt speed,oa ng t e wor ce s w t t e correct amo unt o w or , an aancng t e wo rcells

    Determine individual worker performance and identifying operations that arehaving problems so the problems can be corrected

    Paying incentive wages for outstanding team or individual performance

    Evaluating cost reduction ideas and picking the most economical method basedon cost analysis, not opinion

    Evaluating new equipment purchases to justify their expense

    Developing operation personnel budgets to measure management performance.

    How would you answer the following questionsHow would you answer the following questionswithout time standards?without time standards?

    How Many Machines Do We Need?

    One of the first questions rose when setting up a new operation orstarting production on a new product is how many machines do weneed? The answer depends on two pieces of information:

    a. How many pieces do we need to manufacture per shift?

    b. How much time does it take to make one part? (Time standard)

    EXAMPLE

    1. The marketing department wants us to make 2,000 wagons per 8-hour shift.

    2. It takes us 0.400 minutes to form the wagon body on a press.

    3. There are 480 minutes per shift (8 hours/shift x 60 minu tes/hr).

    4. - 50 minutes downtime per shift (breaks, clean-up, etc.)

    5. There are 430 minutes per shift available @ 100%.

    6. @ 75% performance (based on history) (0.75 x 430 = 322.5).

    7. There are 322.5 effective minutes left to produce 2,000 units.

    322.5

    8. ---------------- = 0.161 minutes per unit, or 6.21 parts per minute.

    2,000 units

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    The 0.161 minutes per unit is plant rate. Every operation in theplant must produce a part every 0.161 minutes; therefore, howmany machines do we need for this operation?

    Time standard = 0.400 minutes/unit

    ----------------------------------------------------- = 2.48 machines

    Plant rate = 0.161 minutes/unit

    This operation requires 2.48 machines. If other operations arerequired for this kind of machine, we would add all the machinerequirements together and round up to the next whole number.

    In this example, we would buy three machines. (Never rounddown on your own. You will be building a bottleneck in yourplant.)

    How Many people should we hire?

    Look at the operations chart shown in Figure 4 -1.

    From a study of this chart, we find the time standard (or everyoperation required to fabricate each part of the product and each

    product.

    In the operation shown here (casting the handle), the 05 indicates theoperation number. Usually, 05 is the first operation of each part. The500 is the pieces per hour standard. This operator should produce500 pieces per hour. The 2.0 is the hours required to produce 1,000pieces. At 500 pieces per hour, it would take us 2 hours to make1,000. How many people would be required to cast 2,000 handlesper shift?

    Not many people, departments, or plants work at 100% performance.How many hours would be required if we work at the rate of 60%, 85%, or120%?

    4 hours 4 hours 4 hours----------- = 6.66 hours; ------------- = 4.7 hours; -------------- = 3.33 hours.

    60% 85% 120%

    Look again it use operations chart shown in Figure 4-1. Note the total138.94 hours at the bottom right side. The operations chart includes everyoperation required to fabricate, paint, inspect, assemble, and pack out aproduct. The total hours is the total time required to make 1,000 finishedproducts.

    In our water valve factory, we need 138.94 hours at 100% to produce 1,000water valves. If this is a new product, we could expect 75% performanceduring the first year of production. Therefore,

    138.94 hours per 1,000---------------------------------- = 185 hours/1,000 where 75% = 0.75

    75% performance

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    The marketing department has forecasted sales of 2,500 watervalves per day. How many people are needed to make water valves?

    185 hours/1,000 X 2.5 (1,000) = 463 hours/day needed.

    463 / 8 = 57.87 which is e ual to 58 eo le.

    Management will be judged by how well it performs to this goal.

    If less than 2,500 units are produced per day with the 58 people,management will be over budget, and that is not good.

    If it produces more than 2,500 units per day, management is judged

    as being good at managing, and the managers are promotable.

    Frame Work for FacilitiesPlanning

    [Q. Lee, IIE Solution, 1997]Layout or space planning involves five levels -

    from the global maps of site location to

    engineering drawing tools and workstations

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    Level 1: Global site location

    Level 2: Supra-space plan

    Level 3: Macro-space plan

    Level 4: Micro-space plan Level 5: Sub-micro-space plan

    LEVEL 1: Global site locationLEVEL 1: Global site location

    The firm decide where to locate facilitiesand determine their missions

    The most strategic impact

    Major considerations: labor rates, tax break,

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    labor skill and attitudes, supporting services,politics,etc.

    Appropriate planning results in facilitiesoptimized for the markets and located nearthe most important resources

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    LEVEL 2: SupraLEVEL 2: Supra--space planspace plan

    Site planning, including number, size,

    location of buildings, as well as roads,

    water, gas, and rail

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    nvo ve a ser es o raw ng s ow ng

    past, present and future configurations

    Planning still has long-term and far

    reaching consequences

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    LEVEL 3: MacroLEVEL 3: Macro--space planspace plan

    A macro-layout, plans each building,

    structure, or sub-unit of the site

    The designers define and locate operating

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    flow

    Easier to correct than site level decisions

    A poorly planned facility can bring high

    handling cost, confusion, and inflexibility

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    Level 4: MicroLevel 4: Micro--space planspace plan

    Department or cell layout

    Location of specific equipment is determined

    Emphasis shifts from gross material flow to

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    personal space and communication

    Socio-technical considerations dominate

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    LEVEL 5: SubLEVEL 5: Sub--micromicro--space planspace plan

    Workstation design

    Workstations are designed for efficiency,

    effectiveness, and safety

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    Tools-jig and fixture

    Location of materials

    Appropriate material handling aids

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    Facilities planning is a complex and broad subject thatcuts across several specialized disciplines (civil,electrical, industrial, mechanical, etc)

    new hospital

    Facilities PlanningFacilities Planning[Tompkins, et.al. 2003][Tompkins, et.al. 2003]

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    existing warehouse

    baggage department of an airport.

    Facilities planning determines how an activitys tangiblefixed assets best support achieving the activitys

    objective.

    Facilities Planning HierarchyFacilities Planning Hierarchy

    Facility System

    It is important to realize that the term facilities

    planning is not synonyms with facilities location,

    facilities design, facilities layout, or plant layout.

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    FacilitiesPlanning

    FacilitiesDesign

    Handling SystemsDesign

    Layout Design

    DesignLocation

    Facilities location - placement with respect tocustomer, suppliers, and other facilities withwhich it interfaces.

    Influences of Plant location :

    Facilities LocationFacilities Location

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    Markets

    Transportation systems

    Economic development programs (financialincentives)

    Facilities design consists of the facility systems, thelayout, and the handling system Facility system structural systems, the atmospheric systems,

    the enclosure system, the lighting/electrical/communicationsystems, the life safety system and the sanitation system.

    La out consists of all e ui ment, machiner , and furnishin s

    Facilities DesignFacilities Design

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    within the building envelope.

    Handling system consists of the mechanisms needed tosatisfy the required facility interactions.

    Material handling is very important to the facility designactivity. The choice of material handling equipment willgreatly effect the appropriateness of the facility design.

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    Facilities PlanningFacilities Planning

    Facilities planning involves making strategic

    decisions concerning the tangible fixed assets used

    in the production process.

    The difference in the planning horizon for each of

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    the different levels of analysis used in the

    production process listed in Table 1.1.

    Table 1.1: Planning Horizon Associated withTable 1.1: Planning Horizon Associated withProduction AnalysisProduction Analysis

    Planning Horizon Level of Analysis

    Months-Years Facilities Planning

    Months-Years Product Design and Process Planning

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    Weeks-Months Production Planning

    Hours-Weeks Production control

    Minutes-Hours Quality control

    Seconds-Minutes Machine-level real-time control

    Motivation Behind Facility PlanningMotivation Behind Facility Planning1. One of the most effective methods for increasing

    plant productivity and reducing cost is to reduce oreliminate all activities that are unnecessary orwasteful. A facilities design should accomplish thisgoal in terms of material handling, personnel and

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    equ pment ut zat on, re uce nventor es, anincreased quality.

    2. Employee health and safety

    3. Energy conservation

    4. Community considerations, fire protection, security,and the ADA of 1989

    Objectives of Facilities PlanningObjectives of Facilities Planning Improve customer satisfaction by being easy to do

    business with, conforming to customer promises, andresponding to customer needs.

    Increase return on assets (ROA) by maximizing inventoryturns, minimizing obsolete inventory, maximizing

    employee participation, and maximizing continuous

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    improvement.

    Maximize speed for quick customer response.

    Reduced costs and grow the supply chain profitability

    Integrate the supply chain through partnership andcommunication.

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    Objectives of Facilities PlanningObjectives of Facilities Planning Support the organizations vision through improved

    material handling, material control, and goodhousekeeping.

    Effectively utilize people, equipment, space, and energy.

    Maximize return on investment (ROI) on all capital

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    expen tures

    Be adaptable and promote ease of maintenance.

    Provide for employee safety and job satisfaction.

    Provide flexibility to adapt to changing conditions

    Significance of Facility DesignSignificance of Facility Design

    Material handling costs:

    30-75% of a products cost (Sule 1991)

    20-50% of a manufacturing companys

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    operating budget (Tompkins & White, 1994)

    Optimal Layout Design can reduce

    production costs

    Facilities Planning ProcessFacilities Planning Process

    By applying the engineering design approach,a systematic approach can be developed Define the problem

    Define (or redefine) the objective of the facility

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    performed in accomplishing the objective

    Analyze the problem

    Determine the interrelationships among allactivities

    Determine the space requirements for all activities

    Generate alternative facilities plans

    Facilities Planning ProcessFacilities Planning Process

    Evaluate the alternatives

    Evaluate alternative facilities plans

    Select the preferred design

    Select a facilities plan

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    Implement the design

    Implement the facilities plan

    Maintain and adapt the facilities plan

    Redefine the objective of the facility

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    Developing Facilities Planning StrategiesDeveloping Facilities Planning Strategies

    Productdevelopment anddesign decisions

    Processing &

    ProductionPlanning &

    Inventory ControlHuman Resources &

    Finance

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    a e r aRequirements

    Layout & MaterialHandling # &

    Location

    Storage,movement,protection &control ofmaterial

    Space &Flow

    Size &Design

    Sources of Information ForSources of Information ForManufacturing Facilities DesignManufacturing Facilities Design

    All the information that is used must come

    from different sources.

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    ,

    actually produced by the facility designer.

    Some companies have several sub-

    departments within manufacturing/industrial

    engineering. But, in smaller organizations youare responsible for producing the information.

    Sources Of Information ForSources Of Information ForManufacturing Facilities DesignManufacturing Facilities Design

    Marketing

    Product design

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    Management policy

    Marketing

    Selling price

    Volume, how many can we sell?

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    ,

    Replacement parts, older products

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    Product DesignProduct Design Product design

    blueprints

    bill of material (part list) indented BOM

    buyouts/fabricate

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    assem y raw ngs Part and assembly drawings are especially helpful in

    visualization of how parts will fit together

    model shop samples (prototypes)

    Relationship between FD and product design is

    important

    Management PolicyManagement Policy Management policy - refers to the upper-level

    employees inventory policy (Just in Time, Kanban, WIP)

    lean thinking

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    startup schedule

    make or buy decision (new or old facility, capitalinvestment, and mission)

    feasibility studies (what product or process

    proposal is the most profitable for the company

    Types of Layout ProblemsTypes of Layout Problems

    Service systems layout problems

    Manufacturing layout problems

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    Warehouse layout problems

    Nontraditional layout problems

    Service Systems Layout Problems

    Examples: layouts of the tables, kitchen, and cocktail

    lounge in licensed restaurant; an insurance office;

    runway at an airport; emergency facilities in a

    hospital and town; public library

    To develop service systems layout, designers must

    know the number of entities or facilities that are to

    be located, the area that will likely be occupied by

    each, the interaction between facilities, and special

    layout restrictions for any facility or pair of facilities

    General office structures: 1) Closed, 2) Semiclosed,

    3) Open, and 4) Semiopen

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    Service Systems Layout Problems Service Systems Layout Problems

    Manufacturing layout problemsManufacturing layout problems

    Layout design is an important task when a

    manufacturing systems is redesign, expanded, or

    designed for the first time

    The layout problems involves determining the

    location o machines, workstations, rest areas,

    inspection stations, clean rooms, heat treatment

    station, supervisor or manager offices, tool cribs,

    and other facilities to achieve these five objectives:

    Minimize cost of transportation between

    facilities

    Manufacturing layout problemsManufacturing layout problems

    Minimize cost of transportation between facilities

    Facilitate the traffic flow

    Increase employee morale

    Minimize the risk of in ur to ersonnel anddamage to property

    Provide for supervision and face-to-face

    communication

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    Manufacturing layout problemsManufacturing layout problems

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    Warehouse layout problemsWarehouse layout problems

    A good warehouse layout should use

    available storage space effectively to

    minimize storage and material handling cost

    Some factors to be considered in

    warehouse design are shape and size of

    aisles, height of the warehouse, location and

    orientation of the docking area, types of

    racks to be used for storages, and the level

    of automation involved in the storage and

    retrieval of commodities

    Warehouse layout problemsWarehouse layout problems

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