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Use safety practices in all machine and hand work operations
Assessment Strategies
Test, Skill Demonstration in Lab
Criteria
you pass safety test
demonstrate safety procedures
operate machines with all required guards in place
maintain clean and organized work environment
wear appropriate clothing and Personal Protective Equipment (PPE)
explain proper lock-out tag-out procedures
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Operate a CNC Wire EDM
Assessment Strategies
Skill Demonstration in Lab
Using the Makino CNC Wire EDM
On small V-Block
Criteria
load correct program, and activate the proper screens
check program, and activate graphics screen to plot and verify the geometry path
set fixture offsets
initiate cycle start and monitor burn process
measure part as per blueprint specifications
properly shut down machine
follow all safety practices – both general and specific to CNC Wire EDM machines
machine detail or part conforms to blueprint specifications
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Gain skills in the understanding and use of carbide tooling
Assessment Strategies
Skill Demonstration in Lab
Using the Machinery’s handbook and a calculator
With carbide inserts and tool holders selected by the student
On manual mills, lathes, and CNC machines
On R-8 cutter, precision vise, and kant twist clamp projects
Criteria
explain the ASA carbide insert identification number
explain the different geometries of carbide inserts in regard to strength, lead, and rake angles
select the correct carbide insert and tool holder for a given application
calculate the feed, speed, and depth of cut for a given application
describe the basic types of tool wear and corrective actions
turn, bore, and mill using carbide tooling
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Set up a tool and cutter grinder
Assessment Strategies
Test, Skill Demonstration in Lab
With the Cincinnati universal tool and cutter grinder
With the Weldon air flow fixture
With the index head and centers
With tools selected by the student
Criteria
you pass written tool and cutter grinding test
Weldon air flow fixture is properly positioned, and the finger is the correct location of the grinding wheel and end mill
mount the index fixture to the table and position the end mill in the correct location to the grinding wheel
mount the end mill fixture on the surface grinder and position primary and secondary angles in relation to the grinding wheel
position the wheel guard in a safe location, and ensure the correct rotational direction of the wheel
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Operate a tool and cutter grinder
Assessment Strategies
Skill Demonstration in Lab
With a cutter clearance and relief chart
Using tools selected by the student
Using the Weldon air flow fixture
Using the index fixture and centers
Grinding a reamer between centers – Group demonstration
Grinding the bottom of 2 end mills using the proper cutting clearance for the primary and secondary relief
Grinding 2 end mills on the outside periphery using the proper cutting clearance for the primary and secondary relief
Making a test cut in a piece of steel
Criteria
grind the bottom of an end mill with the proper primary and secondary relief angles
grind the periphery of an end mill with the proper primary and secondary relief angles
sharpened cutter passes a test cut
cutter has been ground to designated size
grind an end mill with proper clearances, and the cutter will efficiently cut when applied to a test cut
describe a reamer with the correct edge relief and chamfer angle
verify clearance angles using the indicator drop method and the cutter clearance gage
follow all safety practices – both general and specific to the tool and cutter grinder
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Setup a CNC turning center
Assessment Strategies
Skill Demonstration in Lab
With Dousan and Okuma CNC turning center and reference manual
Using lab equipment selected by the student
On R-8 carbide cutter and Kant Twist projects
Criteria
choose proper collet and rigidly mounts workpiece to the headstock
grid or reference machine
select and load the turret with the proper tooling for the job
set tool length offsets for X (diameters)
set tool length offsets for Z (zeroes)
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Program a CNC turning center
Assessment Strategies
Skill Demonstration in Lab
With Dousan and Okuma CNC turning center
Using Fanuc controller
On R-8 carbide cutter & Kant Twist projects
Criteria
use Mastercam Lathe software to draw the part geometry
assign the proper tool for a specific operation (generate tool path)
use reference manual to look up and key in tool library information
edit part geometry and tool path
assign a filename and post processes the file
demonstrate file management techniques
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Operate a CNC turning center
Assessment Strategies
Skill Demonstration in Lab
With Dousan and Okuma CNC turning center
Using lab equipment selected by the student
On R-8 carbide cutter & Kant Twist projects
Criteria
load NC file from computer memory
demonstrate file management techniques
adjust feed and speed overrides, and activate program
measure workpiece and adjusts tool offsets to compensate for diameter and length discrepancies
verify finished part to blueprint specifications
properly shut down machine
follow all safety practices – both general and specific to the CNC turning center
machined part matches blueprint specifications
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Setup a CNC machining center
Assessment Strategies
Skill Demonstration in Lab
With the Haas and Dousan CNC machining centers and manuals
Using lab equipment selected by student
On precision vise, and kant twist clamps
Criteria
use proper work holding devices and rigidly mount workpiece to machine table
tram workpiece to machine axes and set zero point
set clear and reference points
select and load correct program
install tools into holders, and set tool length offsets
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Program a CNC machining center
Assessment Strategies
Skill Demonstration in Lab
Using the Haas and Dousan machining centers
On precision vise, and kant twist clamps
Criteria
manually program part geometry
use off-line programming software to draw the part geometry
use off-line programming software to generate the tool path
choose the proper cutter entry and exit position/path
assign the proper tool for a specific operation
edit part geometry and toolpath
proof toolpath through back plotting
assign a filename and post process the file
machined part or detail matches blueprint specifications
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Operate a CNC machining center
Assessment Strategies
Skill Demonstration in Lab
Using the Haas and Dousan CNC machining centers and reference manuals
On precision vise and kant twist clamps
Criteria
load correct program
check program
demonstrate file management techniques
initiate cycle start and adjust feeds and speeds as necessary
measure part as per blueprint specifications, and adjust tool lengths and offsets as required
follow all safety practices – both general and specific to the CNC machining center
properly shut down machine
machined detail or part conforms to blueprint specifications
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Use advanced setups and procedures on surface grinders
Assessment Strategies
Skill Demonstration in Lab
Using tools and equipment selected by the student
On three different surface grinders
Using precision angle plates, magnetic sine chuck, and magnetic parallels
On precision vise project
Criteria
select the proper grinding wheel for a given application
check and stone off magnetic chuck
mount and dress the grinding wheel
parallel grind and square workpiece to blueprint specifications
properly remove grind stock relative to detail and hole locations
set up magnetic sine chuck and grind angled surfaces both square and parallel to datum edges
square a shoulder using the sidewheel method
follow all safety practices – both general and specific to surface grinders
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Use advance setups and procedures on manual vertical milling machines
Assessment Strategies
Skill Demonstration in Lab
With bridgeport vertical mill
With digital readout
With the Machinery’s handbook and a calculator
Using cutting tool selected by the student
Using an offset boring head
On kant twist clamp and precision vise projects
Criteria
choose proper work holding devices and rigidly mount workpiece to machine table
edge find or tram workpiece to establish datum position
select the proper size cutting tool for the application
calculate the proper feed and speed for a variety of cutting tools
parallel mill and square workpieces to blueprint specifications
spot drill, drill, chamfer, and ream holes to blueprint specifications
center drill, drill, chamfer, and tap holes to blueprint specifications
bore hole locations and diameter to blueprint specifications
line bore hole locations and diameters to blue print specifications
mill slots, angles, radii, and chamfer to blueprint specifications
mill pockets to blueprint specifications
follow all safety practices – both general and specific to the milling machine
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Setup and operate manual horizontal milling machines
Assessment Strategies
Skill Demonstration in Lab
Using tools and equipment selected by the student
With horizontal mill
On precision vise project
Criteria
choose the proper work holding device and rigidly mounts the workpiece to the machine table
edge find or tram the workpiece to establish the datum position
select the proper cutting tool and arbor for the application
calculate the proper feed and speed for a variety of cutting tools
parallel mill and square the workpiece to blueprint specifications
mount milling cutters on arbors using an overarm support
straddle mill, mill slot, and mill grooves
follow all safety practices – both general and specific to the horizontal mill
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Use advanced setups and procedures on manual lathes
Assessment Strategies
Skill Demonstration in Lab
With manual lathe
With Machinery’s handbook and calculator
Using cutting tools and holders selected by the student
On kant twist clamps, R-8 cutter, and precision vise projects
Criteria
use proper work holding device to mount the workpiece to the machine spindle
establish the datum or machining location
select the proper cutting tool for the application
calculate the correct feed and speed for all cutting tools
turn diameters, shoulders, and angles to blueprint specifications
center, drill, chamfer, and tap holes to blueprint specification
spot drill, drill, and ream holes to blueprint specifications
bore and counterbore hole diameters to blueprint specifications
chase threads to blueprint specifications
follow all safety practices – both general and specific to the lathe
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Demonstrate skills in using machine tool accessories
Assessment Strategies
Skill Demonstration in Lab
Using manual machines and the CNC machines
Using tools and equipment selected by the student
On vise and kant twist clamp projects
Criteria
mount workpiece to and use milling vises
mount work pieces to the machine table using parallels, vise stops, table stops, and strap clamps
mount work pieces to the machine table using fixtures
use sine bars, sine chucks, angle plates, angle vises, v-blocks, and index heads
use magnetic chucks, v-blocks, and parallels
use offset boring heads
use DRO (digital readout systems)
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Heat treats project steels using sound metallurgical practices
Assessment Strategies
Skill Demonstration in Lab
Using the manufacturer’s heat treating specification charts
Using the heat treat and tempering furnaces
Using a Rockwell hardness tester
Criteria
determine the correct temperature, length of time, and quenching medium for hardening the workpiece
determine the tempering temperature and soak time to achieve the desired Rockwell hardness
visually inspect and Rockwell hardness test the workpiece
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Verify accuracy of machining using dimensional metrology practices and equipment
Assessment Strategies
Skill Demonstration in Lab
Using tools and equipment selected by the student
While part is still mounted to the machine
In the gage lab
On a surface plate
On V-block, kant twist clamps, and R-8 carbide cutter
Criteria
measure dimensional accuracy of the part on the machine using indicators, outside micrometers, depth micrometers, inside micrometers, calipers, telescoping gages, small hole gages, plug gages, and mating parts
measure dimensional accuracy of the part on a surface plate using indicators, gage blocks, height gages, sine bars, angle plates, plug gages, and cylindrical squares
measure length, width, height, locations, sizes, and angles using a CMM