Çankaya university foreign languages unit acs 206 me unit 23 – week 11 machining i
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ÇANKAYA UNIVERSITYÇANKAYA UNIVERSITYFOREIGN LANGUAGES UNITFOREIGN LANGUAGES UNIT
ACS 206 MEACS 206 MEUNIT 23 – WEEK 11UNIT 23 – WEEK 11
MACHINING IMACHINING I
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VOCABULARY ITEMSVOCABULARY ITEMS
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Machining (cutting workpieces)Machining (cutting workpieces)
DefinitionDefinition: cutting pieces of materials : cutting pieces of materials (especially metals) with machines.(especially metals) with machines.
E.g.:E.g.: Metal materials are shaped by machining. Metal materials are shaped by machining.
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To machine (to cut workpieces)To machine (to cut workpieces)
DefinitionDefinition: to cut pieces of materials : to cut pieces of materials (especially metals) with machines.(especially metals) with machines.
E.g.:E.g.: Metal materials are machined to give Metal materials are machined to give them particular shapes.them particular shapes.
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MachineMachine toolstools
Definition: the tools used in machiningDefinition: the tools used in machiningE.g.: Machining tools need to be E.g.: Machining tools need to be
maintained periodically for quality work.maintained periodically for quality work.
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Swarf (chips) (n.)Swarf (chips) (n.)
Definition/synonym:Definition/synonym: waste material waste material
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swarf
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Swarf (chips) (n.)Swarf (chips) (n.)
Definition/synonym:Definition/synonym: waste material waste material
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cutting fluidcutting fluidDefinition: Definition: a liquid used to cool the
workpiece while machining
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Coolant (n.)Coolant (n.) DefinitionDefinition: a specially prepared liquid which is used : a specially prepared liquid which is used
to stop a machine from getting too hot while it is to stop a machine from getting too hot while it is operatingoperating
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CNC (computer numerical control)CNC (computer numerical control)
DefinitionDefinition: a system on computers for : a system on computers for controlling and guiding the machining processcontrolling and guiding the machining process
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CAD (computer aided design)CAD (computer aided design)
Definition: Another system to control Definition: Another system to control machiningmachining
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CAM (computer aided manufacturing)CAM (computer aided manufacturing) DefinitonDefiniton: : Computer-aided manufacturingComputer-aided manufacturing ( (CAMCAM) )
is the use of computer software to control machine is the use of computer software to control machine tools and related machinery in the manufacturing of tools and related machinery in the manufacturing of workpieces.workpieces.[[
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milling machinemilling machine Milling is the most common form of machining, a material
removal process, which can create a variety of features on a part by cutting away the unwanted material. The milling process requires a milling machine, workpiece, fixture, and cutter.
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toothed cutting discstoothed cutting discs
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The teeth
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to mill (v.)to mill (v.) Definition: (specialized meaning) to shape metal by
removing parts from it using a special machine
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to rotate (v.)to rotate (v.) DefinitionDefinition: [I or T] to (cause to) turn in a circle, : [I or T] to (cause to) turn in a circle,
especially around a fixed pointRotate the handle by especially around a fixed pointRotate the handle by 180° to open the door.180° to open the door.
E.g.:E.g.:The wheel rotates The wheel rotates aroundaround an axle. an axle.The satellite slowly rotates as it circlesThe satellite slowly rotates as it circles the Earth.the Earth.
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lathe (n.)lathe (n.) DefinitionDefinition: a machine for changing the shape of a : a machine for changing the shape of a
piece of wood, metal, etc. which works by turning the piece of wood, metal, etc. which works by turning the material while a sharp tool is pressed against itmaterial while a sharp tool is pressed against it
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Sawing (n.)Sawing (n.) Definition: Cutting materials using a saw E.g.: Carbon steel blades are usually the best choice
for sawing wood, plastic, aluminum, and similar easy-to-cut materials
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circular sawcircular saw DefinitionDefinition: : The The circular sawcircular saw is a machine using a is a machine using a
toothed metal cutting disc or bladetoothed metal cutting disc or blade..
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Blade (n.)Blade (n.) DefinitionDefinition: the flat part on a knife or similar tool or : the flat part on a knife or similar tool or
weapon, with a very thin edge used for cuttinga sword weapon, with a very thin edge used for cuttinga sword with a steel bladewith a steel blade
E.gE.g.: a packet of razor blades.: a packet of razor blades
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Kerf (n.)Kerf (n.) DefinitionDefinition: : A slit made by cutting, esp. with a saw A slit made by cutting, esp. with a saw
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band sawband saw DefinitionDefinition: A : A bandsawbandsaw is a power tool which uses a is a power tool which uses a
blade consisting of a continuous band of metal with blade consisting of a continuous band of metal with teeth along one edge to cut various workpieces. The teeth along one edge to cut various workpieces. The band usually rides on two wheels rotating in the band usually rides on two wheels rotating in the same plane, although some bandsaws may have same plane, although some bandsaws may have three or four wheelsthree or four wheels
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hacksawhacksaw*used for hand sawing*used for hand sawing
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hole sawhole saw
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abrasive wheelabrasive wheel DefinitionDefinition: Blade in the shape of wheel that is rough : Blade in the shape of wheel that is rough
and very sharpand very sharp
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Drill (n.)Drill (n.) DefinitionDefinition: a tool or machine which makes holes: a tool or machine which makes holesE.g.: an electric/pneumatic drillE.g.: an electric/pneumatic drill
a dentist's drilla dentist's drill
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Drilling (n.)Drilling (n.) DefinitionDefinition: cutting circular holes on a surface: cutting circular holes on a surfacee.g.: It’s better to make holes on a wall by drilling since e.g.: It’s better to make holes on a wall by drilling since
it is less damaging to the wall.it is less damaging to the wall.
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to drill into (v.)to drill into (v.)
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drill bit (bit)drill bit (bit)DefinitionDefinition: the sharp part of the drill which : the sharp part of the drill which
cuts the holecuts the hole
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Drill bit
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diamond drillingdiamond drilling Exploration diamond drillingExploration diamond drilling is used in the mining is used in the mining
industry to probe the contents of known ore deposits and industry to probe the contents of known ore deposits and potential sites. By withdrawing a small diameter core of potential sites. By withdrawing a small diameter core of rock from the orebody, geologists can analyze the core by rock from the orebody, geologists can analyze the core by chemical assay and conduct petrologic, structural and chemical assay and conduct petrologic, structural and mineralogic studies of the rock.mineralogic studies of the rock.
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to enlarge (v.)to enlarge (v.) DefinitionDefinition: to make/become larger; to make/become : to make/become larger; to make/become
biggerbigger E.gE.g.: The Eiffel Tower is 15 cm longer in summer .: The Eiffel Tower is 15 cm longer in summer
months because the heat enlarges its metal.months because the heat enlarges its metal.
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Boring (n.)Boring (n.)DefinitionDefinition: making a hole larger (in diamond : making a hole larger (in diamond
drilling, or core drilling)drilling, or core drilling)
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Grinding (n.)Grinding (n.) DefinitionDefinition: Removing material across a surface area, : Removing material across a surface area,
using abrasive wheelsusing abrasive wheels
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Grinder (n.)Grinder (n.) DefinitionDefinition: a grinding machine: a grinding machine
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23.1 (p. 53)23.1 (p. 53)
Match the two parts to make correct Match the two parts to make correct sentences.sentences.
1-c1-c 2-d2-d 3-53-5 4-f4-f 5-b5-b 6-a6-a
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23.2 (p. 53)23.2 (p. 53)
Complete the descriptions below the photos Complete the descriptions below the photos using the words in the boxusing the words in the box
1- drill bit for metal1- drill bit for metal 2- a holesaw2- a holesaw 3- a blade for a hacksaw3- a blade for a hacksaw 4- a toothed blade for a circular saw4- a toothed blade for a circular saw 5- a thick abrasive wheel for a grinder5- a thick abrasive wheel for a grinder 6- cores of concrete being removed by diamond 6- cores of concrete being removed by diamond
drillingdrilling
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23.3 (p. 53)23.3 (p. 53)
Complete the sentences with the words in Complete the sentences with the words in the box. Look at B (p. 52) to help you.the box. Look at B (p. 52) to help you.
1. turn1. turn 2. drill2. drill 3. saw3. saw 4. grind4. grind 5. mill5. mill