BASIC KNOWLEDGE OF SHEET METAL.pptx

5/24/2018 BASIC KNOWLEDGE OF SHEET METAL.pptx

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BASICS OF SHEET METALUSAGE OF NX- SHEET METAL TOOLSIN UNIGRAPHICS


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SHEET METAL :1. Sheet metal involves work pieces with a high ratio of surface area to

Thickness.

2. Plates, thickness > 6 mm ( inch).

3. Sheets, thickness < 6 mm.

4. Sheet-metal forming processes:4.1. Shearing.4.2. Bending.4.3. Stretching.

5. Typical items produced by sheet-metal forming processes:metal desks, appliance bodies, hubcaps,aircraft panels, beverage cans, car

bodies, kitchen utensils.


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6. Types of operations :

PunchingBlankingDie cuttingPerforatingPartingNotchingLancingFine blankingSlittingNibbling.


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BENDING:The minimum bend radius is usually stated in terms of

sheets thickness (ex:2T,3T,4T).

The minimum bend radius of various materials:


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COMMON BENDING OPERATIONS:Press brake forming

Air bendingRoller bendingBeadingFlangingHemmingRoll formingStretch formingDeep drawing


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USAGE OF NX-SHEET METAL TOOLS


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Types of tools in NX-Sheet metal:1. TAB2. FLANGE

3. COUNTER FLANGE4. LOFTED FLANGE5. HEM FLANGE6. BEND7. JOG8. SHEET METAL FROM SOLID9. CLOSED CORNER10. BREAK CORNER11. DIMPLE12. LOUVER13. DRAWN CUT OUT

14. BEAD15. SOLID PUNCH16. GUSSET17. NORMAL CUTTOUT

18. BEND TAPER19. RESIZE BEND RADIUS

20. RESIZE BEND ANGLE21. RESIZE NEUTRAL FACTOR22. UNBEND23. REBEND24. FLAT SOLID25. FLAT PATTERN26. ADVANCE FLANGE27. BRIDGE BEND28. UNIFORM29. REFORM


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1.TAB: Creates a base feature by extruding a sketch along a vector by athickness value or adds a material to a plane face.


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2.FLANGE: Adds a flange to an angle to a planar faceand adds a bend between the two


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3.COUNTER FLANGE: Creates a base feature by extruding asketch along a vector, or adds material by sweeping a sketchalong an edge or chain of edges.


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4.Lofted flange: Creates a base or secondary featurebetween two sections where lofted shape is a lineartransition between the sections.


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5.HEM FLANGE:Modifies the model by folding the edge of a sheetmetal flange over onto itself for the purpose of safe handling or toincrease edge stiffness.


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Types of HEM flanges:

open

S type


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curl

Open loop


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Closed loop

Centered loop


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6. BEND: Modifies the model by bending material on oneside of a sketch line adding a bend between the two sides


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7. JOG: Modifies the model by lifting material on one side ofsketch line, adding a flange between the two sides.


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8. SHEET METAL FROM SOLID: Builds a sheet metal model thattakes its shape from a collection of planar faces of a solid.


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9. CLOSED CORNER: closes a corner where two adjacentflanges meet by extending the bends & flanges.


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10.BREAK CORNER: Rounds a sharp corner


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11.DIMPLE: Lifts an area of the model inside asketch that simulates stamping a tool.


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12. LOUVER: Pierces the model with a sketch line that simulatesstamping tool


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13.DRAWN CUTOUT: Cuts an area of the model inside a sketchthat simulates stamping a tool


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14.BEAD: Lifts a material along a counter of sketch thatsimulates stamping a tool.


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15.SOLID PUNCH: Adds a sheet metal feature that inheritsthe shape from the punch type tool body


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15. GUSSET: Creates a stiffening gusset on the part

Rounded gusset

Square gusset


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17. NORMAL CUTOUT: CUTS THE MODELPERPENDICULAR TO THE SKETCH


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18. BEND TAPPER: Creates a bend tapper on both sides of bendfaces.

Tapper area


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19. RESIZE BEND RADIUS20. RESIZE BEND ANGLE21. RESIZE NEUTRAL FACTOR


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22.UNBEND: Flattens a bend23. REBEND: Restores a bend


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24. FLAT SOLID: Creates a flat solid feature from theformed sheet metal feature.


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25. FLAT PATTERN: Creates flat pattern feature fromthe formed sheet meta l part.


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26. ADVANCE FLANGE: Adds flange along an edge using abend angle or a reference face the edge and reference canbe curved.


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27. BRIDGE BEND: Creates a transition geometry byjoining two edges on different bodies & then unitesthe bodies


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28. UNIFORM29. REFORM


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Thank you

BASIC KNOWLEDGE OF SHEET METAL.pptx

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