Phases of development of technical devices
Transcription
Phases of development of technical devices
Phases of development of technical devices mechanization – is the replacement of human effort with the work of machines; Environment automation – is the use of process control devices (e.g. technological) without or with little human participation (from Greek: automatos – automatic); Working system robotics – is the use of devices intended for automatic manipulation with the ability to perform programmable motions along a number of axes, equipped with grippers or technological tools (the name "robot" comes from the title of a science-fiction novel by Czech author Karel Čapka, from 1920 – Rossum’s Universal Robots). 30 m – material e – energy i – information We – entrance Wy – exit 31 Environment Environment T – technical object C - man human - aggregate 32 33 Environment Environment R - robot human - set of machines 34 human - robot 35 LOAD Very large PRODUCTION PROCESS Large Moderate Research and development process Manufacturing process Trade and service process Small Very small TYPE OF WORK Technological process Using no tools Using hand tools Using machines Using automated machines Transport process Storage process Using robots FD – dynamic physical load FS – static physical load PO – mental strain of operation work PS – mental strain of service work 36 Product life cycle 37 Product life cycle PRODUCTION PHASE PREPRODUCTION PHASE Idea Control process Technical preparation of production Preparation Processing cooperation agreements excess machining processes initial assembly processes thermal and thermochemical processes end of assembly processes surface machining processes other machining and finishing processes trials and tests delivery (parts, resources, materials, energy) studies and research, preliminary design, identification of needs, structural design, formulation of assumptions, construction and prototype testing, storage processes preparatory processes technological design, foundry processes execution of instrumentation, plastic working processes organizational design, execution of a trial run and a start-up series Assembly maintenance and packaging storage with manufacturer 38 39 Product life cycle POSTPRODUCTION PHASE Trade export trade service retail sales installation Exploitation exploitation (manufactured and nonmanufactured) dismantling handling (prophylactic and repairing) recycling of materials warranty guarantee Outline of the history of technology Liquidation segregation and regeneration of parts utilization and storage of waste operational research 40 41 Jericho animal agriculture 10 000 homo sapiens 200 000 humanoid creatures 4 million dinosaurs 250 – 60 million insects 300 million plants 435 million ??? the birth of the world 4,5 bln. years ago anaerobic bacteria 3,5 billion years ago Why man? fish 520 million multicellular organisms 750 million atmospheric oxygen 2,5 billion years ago algae photosynthesis 3,3 billion years ago 42 Work and technology in primitive societies 43 Work and technology in primitive societies Why man? Specialization Competition Tools 2,5 mln years ago 44 Work and technology in primitive societies 45 Work and technology in primitive societies House 500 thousand yrs ago Fire - 1 mln years ago 46 47 Work and technology in primitive societies Work and technology in primitive societies Thrown tools 400 thousand years ago Clothing 1 - 0,5 mln years ago 48 Work and technology in primitive societies 49 Work and technology in primitive societies Flute 37 -30 thousand years ago What for is music? Rope 15 thousand years ago 50 Work and technology in primitive societies 51 Work and technology in primitive societies Wheel 7 thousand years ago String drill 10 thousand years ago 52 53 Work and technology in primitive societies Primitive societies Dentistry tools 9 thousand years ago Hydraulic empires – “flood control” 54 Work and technology in the Iron Age 55 Work and technology in the Iron Age Smoke shaft furnace in a hollow (Dymarski piec szybowy typu kotlinkowego) 1 – Shaft of the furnace. 2 – Input (charcoal and iron ore). 3 - Hollow filled with dripping slag during smelting. 4 - Iron slate. 5 - Nozzles. 6 - The original ground level. 7 - Bottom level of the hollow. 1 - Szyb pieca. 2 - Wsad (wę ę giel drzewny + ruda żelaza). 3 - Kotlinka wypełłniona ściekają ą cym podczas wytopu ż uż ż lem. 4 - Łupka ż elaza. 5 - Dysze. 6 - Pierwotny poziom terenu. 56 7 - Poziom dna kotlinki. Work and technology in the Iron Age Cut fragment of iron slate. 1 – Slag (Żużel) 2 - Cut bladder of burned iron. (Przecięty pęcherz spieczonego żelaza.) 3 – Charcoal (Węgiel drzewny) Iron slate (Łupka żelazna) 57 Work and technology in the Iron Age Kęs – “Bite of iron” 58 59 Work and technology in the Medieval period Work and technology in the Medieval period Smoke chimney (Dymiarka) 60 Work and technology in the Medieval period 61 Work and technology in the Medieval period 62 Work and technology in the Medieval period 63 Work and technology in the Medieval period Many ancient inventions were forgotten and again invented during the medieval period. Filon from Byzantium described in 230 B.C. the cross joint (przegub krzyżowy), commonly known as an invention of Geronimo Cardano – from 1550 64 65 Work and technology in the Medieval period Work and technology in the Medieval period The creation of clocks contributed to the development of many mechanical solutions, and one of the reasons was to search for perpetual motion – “perpetuum mobile.” Three groups: Those that fight Those that work Those that study 66 67 Work and technology in the Medieval period large influence of small inventions Work and technology in the Medieval period Stirrup (strzemiono) 733 - (Poiteries) Franks fight on foot 755 - Large part of the army is the cavalry, 891 - (Dyle) Franks are unused to fighting on foot Giving land for pledging to the cavalry Taking away of church property A new social class – knights … 68 Work and technology of the Reneissance and Enlightenment 69 Work and technology of the Reneissance and Enlightenment 868 - China, first printed book whole page stamps (stemple całostronnicowe) 1187 - monastery in Engelberg 1445 - Johannes Gensfleisch, known as Gutenberg 1447 - 185 copies of the bible 70 71 Work and technology of the Reneissance and Enlightenment Work and technology of the Reneissance and Enlightenment Besson’s threading lathe - 1568 72 Steam Age The essence of the craftsmanship (rzemieślniczy) style of production is that the product is made from start to finish by the same group of people, one of which - the master - determines the manufacturing process and all the features of the product. The product has individual characteristics and can be identified 73 with a specific style, characteristic of the manufacturer. Steam Age The first primitive steam machine was patented in 1698 by Savery. In 1690 Papin built the first steam machine equipped with a piston (tłok) and cylinder. Joining of Savery and Papin’s ideas created Newcomen’s steam engine in 1712. 74 Steam Age 75 Steam Age Operating principle of Newcomen’s machine – low-pressure steam piston steam fills the cylinder pushing the piston to top pot beam spraying the cylinder causes condensation and pulling the beam pomp issue of accuracy - a half-inch energy consumption 76 James Watt, in 1763, perfected the atmospheric steam engine built earlier by T. Newcomen 77 Steam Age Steam Age 78 Steam Age 79 Industrial Age 80 81 82 83 Industrial Age 84 How do the working conditions appear dangerous? 85 Working in the Factories Faces of Lost Youth: Youth: How are they “lost” lost”? 86 Would you join a union, go to school, or run away? Why? 87 Industrial Age Mass production of muskets forced the creation of highspeed, precision machine tools - milling machines. The first milling machine was created in 1818 by Whitney. This replaced the work of highly qualified workers. 88 89 Industrial Age Industrial Age Lathe constructed by Maudslay all-metal machine with a modern cross slide (suport krzyżowy) and precise leadscrew (śruba pociągowa) One of Maudslay’s employees was Joseph Whitworth. Since 1833, Whitworth took on his own development of screw threads (gwinty). In 1841, he developed a series of standard threads (still sometimes called Whitworth threads). 90 Industrial Age 91 Industrial Age SUCTION COMPRESSION 92 RINSING COMPRESSION/ SUCTION WORK 1. Compression stroke - the first phase of the compression stroke is the ”rinsing" of the engine working space [przestrzeń robocza silnika] (1). Then the gases generated in the previous cycle are extruded through the exhaust channel [kanał wydechowy] (2), while through the intercompartamental channel [kanał międzykomorowy] (3) to the working space, poured is a fuel mixture accumulated earlier in the space of the engine crank [przestrzeń korbowa silnika] (4). In a further stage of the compression stroke, the piston [tłok] (5), also in the role of the valve, closes the exhaust and intercompartamental ducts, also revealing the suction channel [kanał ssawny] (6). During the compression of fuel in the combustion chamber, a fresh portion of the fuel mixture flows through the suction channel to the space of the engine crank. 2. Work stroke - before reaching the top “dead” position of the piston [górne martwe położenie tłoka], fuel is ignited, which when rapidly expanding causes the movement of the piston down to the lower extreme position [dolne skrajne położenie]. In the final phase of this stroke, the exhaust channel is uncovered and the fumes begin to leave the workspace. 94 EXHAUST 93 Industrial Age Industrial Age WORK Industrial Age Industrial Age Frederick W. Taylor 1856-1915 specialization of tasks Fastest = Best (steel industry) • Select a sample of skilled workers and carefully study the job being done. • Carefully list each operation including extensive detail on each task being performed. • Utilize a stopwatch to time each task being performed. Repeat this step over a period of time to obtain an average of the time it takes to perform each task. • Identify and eliminate any unnecessary tasks that are performed to finalize the job. • Identify any improvements, tools or techniques that can be adopted to reduce the time in performing the job. • Establish new and informed times and pay-rates for the job. • Lastly, all workers are trained to perform the job in the “one best way” identified. 96 Industrial Age 97 Industrial Age Frederick W. Taylor 1. Replacement of the ways of work based on tradition and routine by new methods based on experience and special studies of movements needed to perform a specific job 2. Selection of workers best suited to the job and thematic teaching of the new rules of work. 3. The separation of the preparation work from its implementation, in order to free the workers from demonstrating any initiative, by passing this step onto the leadership. 4. The introduction of a pay system based on the division of profits derived from the surplus of production. Karol Adamiecki 1866-1933 Harmonization of workers and machines (rolling mills) [walcownie] 98 Industrial Age 99 Industrial Age Elton Mayo (1880-1949) Motivation Hawthorne Effect Lilian i Frank Gilbreth Studies of the way of performing work 100 The major finding of the study was that almost regardless of the experimental manipulation employed, the production of the workers seemed to improve. One reasonable conclusion is that the workers were pleased to receive attention from the researchers who expressed an interest in them. The study was only expected to last one year, but because the researchers were set back each time they tried to relate the manipulated physical conditions to the worker's efficiency, the project 101 extended out to five years. Industrial Age Industrial Age Douglas McGregor (1906 - 1964) Relationship management Bad worker X and good Y Henri Fayol 1841-1925 development of the principles of rationalization of management work think – act – control (myśleć – wykonać - kontrolować) 102 103 Inventiveness - Wynalazczość ść Smelting of copper ore (Wytapianie miedzi z rud) around 4000 BC Casting (Odlewnictwo) around 3700 BC Wheeled carriage (Wóz kołowy) around 3700 BC Pulley (Krążek Linowy) around 700 BC Watermill (Młyn wodny) about 80 BC Windmill (Młyn wiatrakowy) 105 AD Ship rudder (Ster okrętowy) 1250 AD Lathe (Tokarka) 1350 AD Pig iron (Surówka żelazna) 1400 AD Smelting of iron on coke (Wytapianie żelaza na koksie) 1717 AD Watt's steam engine (Maszyna parowa Watta) 1781 AD Planer (Strugarka) 1820 AD Water turbine (Turbina wodna) 1827 AD Turret lathe (Tokarka rewolwerowa) 1845 AD Bessemer steel (Stal besemerowska) 1856 AD Automatic lathe (Tokarka automatyczna) 1870 AD Otto gas engine (Silnik gazowy Otto) 1876 AD Steam turbine (Turbina parowa) 1884 AD High-speed tool steel (Stale narzędziowe szybkotnące) 1898 AD Airplane (Samolot) 1903 AD Conveyor belt mass production (Taśmowa produkcja masowa) 1913 AD 300 0 3000 620 185 1145 100 50 317 64 39 7 18 11 14 6 8 14 5 10 ??? Why is inventiveness variable in time? 104 105 Inventiveness What’s next? ??? Conquests of Alexander the Great Manufacture of articles from iron End of athenian culture Tin alloys (stopy cyny) Caste society (kastowe społeczeństwa) Cheap labor (tania siła robocza) Use of machines known in antiquity DROP Feudal system? (spadek – ustrój Feudalny?) 106 What is the impact of natural disasters, such as the plague, on development? 107 What’s next? What’s next? Incubation Time Petroleum Steam Age Idea Birth Year 108 109