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Communicate using stamping terminology
Assessment Strategies
Stamping Die Worksheet
Criteria
apprentice labels a drawing of a stock strip, stamping die, press, and part piece selected by the instructor
apprentice uses references and resources efficiently
apprentice identifies press and stamping components
apprentice explains press and stamp component operations
apprentice drawing labels are 100% accurate
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Perform calculations required to develop a piece part
Assessment Strategies
Stamping Die Worksheet
Criteria
apprentice develops a piece part using blanking and/or pietcing principles
apprentice uses reference, resources, charts and a calculator efficiently
apprentice identifies material type and condition
apprentice computes the enlargement of a diie opening due to resharpening
apprentice calculates cutting and stripping forces to within 90% accuracy
apprentice differentiates between a blanking die and a piercing die with regard to cutting clearance calculations and modifications with 100% accuracy
apprentice determines the correct amount of cut band clearance from illustrations
apprentice determines burr side location
apprentice explains shearing action
answers are clear and concise
answers are neat and readable
apprentice submits work for review and feedback by the instructor
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Perform blanking and piercing die calculations
Assessment Strategies
Stamping Die Worksheet
Criteria
apprentice calculates punch and die requirements
apprentice uses reference, resources, charts and a calculator efficiently
apprentice explains the sequence of blanking die construction
apprentice calculates die opening and puch diameter to within 10% of actual
apprentice calculates rectangular die opening to within 10% of actual
apprentice calculates punch length and width to within 10% of actual
apprentice calculates cutting and stripping forces to within 10% of actual
answers are clear and concise
answers are neat and readable
apprentice submits work for review and feedback by the instructor
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Calculate bend allowances
Assessment Strategies
Stamping Die Worksheet
Criteria
apprentice creates a drawing with written explanations for a simulated bend
written explanation shows calculations for the radius for the die fillet method of corner setting to within 10% of actual
written explanation shows calculations for minimum distance between a hole and a bend line to minimize distortion to within 10% of actual
written explanation shows calculations for flat blank length to within 10% of actual
written explanation describes lateral forces imposed on a die during bending and lists two ways to counteract this
written explanation lists three methods of corner setting
written explanation lists two key factors that determine bend severity
written explanation lists two ways to overcome springback
written explanation describes the importance of grain direction
the drawing has parts of the bend labeled
the drawing includes two sketches of ways to activate and retain the pad
the drawing includes sketches of tew methods to remove a part from a punch
answers are clear and concise
answers are neat and readable
apprentice completes submits work for review and feedback by the instructor
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Develop stock strip layouts
Assessment Strategies
Stamping Die Worksheet
Criteria
apprentice interprets stock strip layouts and piece part dimensions selected by the instructor
written explanation includes at least one example of both single-pass and double-pass layout
written explanation shows calculations for materials use efficiency for wide vs narrow run piece part orientation
written explanation defines these stock strip conditions: edgewise curvature, longitudinal bow, crown, dish
written explanation explains one problem associated with each of these stock strip conditions: edgewise curvature, longitudinal bow, crown, dish
written explanation describes how grain direction affects part strength
written explanation describes the function of a stock strip
written explanation shows calculations of scrap web width to within 10% of actual
written explanation lists two ways to overcome springback
the drawing shows interposed blank orientation
the drawing shows interlaid blank orientation
the drawing shows a three-row stock strip layout for a round piece part
the drawing shows calculations for advance disyance and stock strip width to within 10% of actual
answers are clear and concise
answers are neat and readable
apprentice completes related worksheet questions and submits work for review and feedback by the instructor
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Apply fasteners to die construction
Assessment Strategies
Stamping Die Worksheet with drawing
Criteria
apprentice creates a drawing with written explanations for fastener applications determined by the instructor
written explanation explains application of dowels, semi-blind dowels, blind dowels, relieved dowels with 100% accuracy
written explanation compares the use of shoulder screws to the use of stripper bolts
written explanation shows calculations for minimum spacing of holes from edges of machine steel and tool steel parts
written explanation names six point styles for set screws with an example of as use for each
written explanation describes methods for hole transfer
written explanation describes methods for cleaning tapped holes after heat treat
drawing shows tap-drill size required based upon thread engagement
drawing shows minimum thread engagement
answers are clear and concise
answers are neat and readable
apprentice completes related worksheet questions and submits work for review and feedback by the instructor
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Illustrate the design and construction of die blocks
Assessment Strategies
Stamping Die Worksheet
Criteria
apprentice creates a drawing with written explanations for application of die blocks selected by the instructor
written explanation includes a definition of "die blocks" to 90% accuracy
written explanation describes the use of sharpening lands
written explanation describes the primary reason for putting shear on a cutting die
written explanation names at least three advantages for assembling die blocks in slots or packets
written explanation names at least two reasons for using inserts in die block construction
written explanation describes cases where cross-bolted die blocks might be used
written explanation describes at least three advantages of using commercial die buttons
drawing shows sharpening lands
answers are clear and concise
answers are neat and readable
apprentice completes related worksheet questions and submits work for review and feedback by the instructor
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Illustrate the design, construction, and applications of punches
Assessment Strategies
Stamping Die Worksheet with drawing exercise/activity
Criteria
apprentice creates a drawing with written explanations for application of die blocks selected by the instructor
written explanation lists three punch categories and give at least three examples in each category to 100% accuracy
written explanation describes the two punch groups and describes their construction to 100% accuracy
written explanation describes three advantages of plain punches
written explanation names three advantages and three disadvantages for pedestal punches
written explanation describes at least two methods for transferring screw holes from a punch to a die
drawing shows positioning bosses
drawing shows hole locations
answers are clear and concise
answers are neat and readable
apprentice completes related worksheet questions and submits work for review and feedback by the instructor
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Illustrate the functions of punch plates
Assessment Strategies
Stamping Die Worksheet
Criteria
apprentice creates a drawing with written explanations for application of die blocks
drawing includes three types of perforator punches
drawing has parts labeled
written explanation states two functions of a punch plate
written explanation states the purpose of keyed punches
written explanation describes three keying techniques
written explanation describe the purpose of floating punches
written explanation describes two methods of slug ejection
answers are clear and concise
answers are neat and readable
apprentice completes related worksheet questions and submits work for review and feedback by the instructor
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Compare the function of pilots
Assessment Strategies
Stamping Die Worksheet
Criteria
apprentice labels drawings and gives brief summary explanations
apprentice determines punch size and degree of accuracy
apprentice computes clearance between stock strip hole and a pilot within 10% accuracy
apprentice explains the functions of pilots in stamping dies
apprentice describes 4 pilot nose profiles and the most appropriate application for each
apprentice labels 8 methods for mounting pilots or punch holders on a drawing
apprentice determines if pilots are direct or indirect on a drawing
answers are clear and concise
answers are neat and readable
apprentice completes related worksheet questions and submits work for review and feedback by the instructor
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Select a stripper and stock guide
Assessment Strategies
Stamping Die Worksheet
Criteria
apprentice selects a stripper and stock guide
apprentice interprets production information
apprentice explains how they considered material type in their selection
apprentice explains how they considered stripper type in their selection
apprentice explains how they considered spring confinement in their selection
apprentice explains how they considered clearances in their selection
apprentice selects an appropriate stripper and stock guide for the situation given them
answers are clear and concise
answers are neat and readable
apprentice completes related worksheet questions and submits work for review and feedback by the instructor
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Calculate die spring pressures
Assessment Strategies
Stamping Die Worksheet
Criteria
apprentice identifies specific stripping job requirements
apprentice calculates spring pressure to within 10% of actual required
apprentice shows calculations
apprentice considers material type and spring type
answers are clear and concise
answers are neat and readable
apprentice completes related worksheet questions and submits work for review and feedback by the instructor
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Illustarte the use of knockouts and shredder pins
Assessment Strategies
Stamping Die Worksheet
Criteria
apprentice creates a drawing with written explanations for applications of die blocks selected by the instructor
drawing includes examples of shredder pins
drawing has direct and indirect knockouts labeled
written explanation states the function of a knockout
written explanation compares the functions of a forming pad and a shredder
written explanation describes three methods of activating knockouts
written explanation describes the functions of a shredder on a stamping die
answers are clear and concise
answers are neat and readable
apprentice completes related worksheet questions and submits work for review and feedback by the instructor
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Illustrate the functions of die stops
Assessment Strategies
Stamping Die Worksheet
Criteria
apprentice creates a drawing with written explanations for application of die blocks selected by the instructor
drawing includes stop position
drawing includes over feed position
drawing includes registry position
drawing includes advance mechanism
written explanation states the function of a die stop
written explanation compares various stop designs
written explanation describes the differences between various stops
answers are clear and concise
answers are neat and readable
apprentice completes related worksheet questions and submits work for review and feedback by the instructor
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Designate die set specifications
Assessment Strategies
Stamping Die Worksheet
Criteria
apprentice specifies die sets for a given application and set of job parameters
apprentice can identify all die set components to 100% accuracy
apprentice defines working area and shut height to 100% accuracy
apprentice designates specifications for the guide posts to 100% accuracy
apprentice designates specifications for the guide bushings to 100% accuracy
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Analyze forming and drawing processes
Assessment Strategies
Stamping Die Worksheet
Criteria
apprentice participates in a discussion concerning various examples of drawn die products
apprentice brings in three different examples of drawn die products from home or work
apprentice references sources of information used in the discussion
in discussion the apprentice identifies three distinct examples of drawn parts
in discussion the apprentice's makes accurate points relevant to the three drawn parts
in discussion the apprentice includes relevant references to drawn part production such as the process used to develop a blank for a part
in discussion the apprentice can define the function of a shearform
in discussion the apprentice can clearly state the difference between bending and forming in the context of die making
in discussion the apprentice uses acceptable language
apprentice summarizes key discussion points in writing, and submits work for review and feedback by the instructor
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Summarize punch press operations
Assessment Strategies
Stamping Die Worksheet
Criteria
apprentice writes a brief discription of die press applications
apprentice interprets a die print selected by the instructor
discription includes nomenclature
discription includes the four basic types of presses
discription includes press operation
discription shows the relationship of strokes per minute to the operation being performed
description includes explanation of the operation of hitch feed, mechanical side feed, roll feed, air slide
description includes a selection of appropriate press size for a given die print
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Illustrate the applications of progressive dies
Assessment Strategies
Stamping Die Worksheet
Criteria
apprentice creates a drawing with written explanations for applications of progressive dies
apprentice uses references and resources efficiently
drawing shows calculations for cutting force
drawing shows calculations for cutting clearance
drawing includes labels to 100% accuracy
written explanation describes the differences between three stamping techniques
written explanation describes advantages of using wire EDM to construct solid die blocks as compared to sectional techniques
written explanation lists the fourteen steps in designing a progressive die (reference "Die Design Fundamentals"
answers are clear and concise
answers are neat and readable
apprentice completes related worksheet questions and submits work for review and feedback by the instructor
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Compare types of dies and die processes
Assessment Strategies
Oral, Written or Graphic Assessment and/or
Stamping Die Worksheet
Criteria
apprentice uses terms accurately
apprentice applies concepts correctly
apprentice references resources
apprentice completes worksheet on time
apprentice submits worksheet to the instructor for review and approval
work is complete
work is accurate
work is grammatically correct and error free
answers are clear and concise
answers are neat and readable
apprentice relates the competency to given specifications