Advanced Sheet Metal Design Using NX Cad Challenge_1_Casing Design

CASE DESIGN:

INTRODUCTION:

• STRAT IN THE NX 12
• CREATE A NEW SHEET METAL model called casing part.
• Create a sketch in the XY plane
• draw a rectangle centered at the origin with an x-length of 60 mm and a y width of 50mm
• exit the sketch mode.

2.change design parameter.

1. Go to the menu
2. next step preferences
3. 
4. sheet metal.
5. 
6. global parameters 1mm

Adding a solid sheet.

• the tab is used to sketch is converted into a thick sheet at the thickness of 1mm.
• the sketch can be created by using the tab tool also sketch is highlighted in a blue-colored box.

CUTOUT.

• Sketch rectangular at the bottom of the working surface.
• by using the normal cut-out command.
• the operation performed showed in the figure.

BANGING.

• Create the sketch on the working surface using the XY plane

• consisting of two symmetric horizontal lines w.r.t the x-axis.
• the upper horizontal line is located at 10mm from the upper left corner of the metal sheet.
• exit the sketch mode and click the bend button, under the more bottom of the bending field.

• in the bend dialog box, select one line as a bend line use angle of 90 degrees.

• redo the same procedure for the other symmetric line.
• use the reverse side option for obtaining the same result as below.

ADDING FLANGES.

• Click on the flange command

• use a length of 5mm and apply the flange on the shown edge of the metal sheet.

• similarly, go the same operation to the rear side of the working surface.

• Apply similar flanges to the corresponding symmetric edges of the metal sheet
• also apply similar flanges on the below show edges.
• the final result to obtain is shown here below.

BREAKING CORNERS:

• 
• Apply breaking corner at the radius of 1mm
• it is used to remove the sharp edges.

UNBENDING THE METAL SHEET:

• SELECT THE UNBENDING COMMAND.
• IN the unbend dialog box, select the as stationary face the larger horizontal face of the metal sheet. select as bend face one of its adjacent faces.
• redo as many similar as necessary to obtain a flat metal sheet.

note :

• the order in which you unbend the face .you will need to re-bend these faces in the reverse order at the end.

ADDING HOLES:

• We will first sketch four points figuring the centers of the four wanted holes.
• create a sketch in the plane.
• in the lower-left part of the metal, the sheet draws a line in which extremities are located on the middle of the shown segments
• draw a point on the center of this line
• click on the hole button under the more button of the feature field.
• in the hole dialog box use a screw clearance hole as type, with an M1.6.

• screw size as to take according to your requirement.
• set the depth limit option through the body.
• create the four holes centered on the four previously defined points.

DIMPLE:

• create the sketch using the XY plane.

• by using the move curve command.

• at the angle of 45 degrees.

DIMPLE:

• By USING THE DIMPLE COMMAND
• select the spline curve.
• set the depth option to 1mm and sidewalls to material inside.
• expand the rounding field by left-clicking on it.
• set all the parameters of the rounding field to 1mm.
• click ok.

• in few cases need to increase the depth.
• if the operation is not applied.

BEADS:

• FIRST CREATE THE SKETCH.

• by using the bead command
• in the bead dialog box select the circle you have just drawn.
• set the depth and radius to 1mmand the cross-section to circular.
• the die radius to 1mm.

• by using the mirror feature
• select the bead and its corresponding sketch as a feature to mirror.
• do the same operation to another side.

Re-bending :

• SELECT THE REBEND COMMAND.
• RESELECT face by selecting them the reverse order in which they were bending.

DRAFTING:

• go to the application and select the drafting.

• Select the new page and required size like A3.
• then select the base view
• to adjust the sheet metal view like top view, front view.
• for the moment, the flattened version is not visible .to make it visible, go in the part navigator and expand the model and model tree.
• in the base view dialog box, select in the option model view to use flat pattern#1
• set the scale to 2:1.