Sheetmetal Casting Using NX CAD

TITLE: SHEETMETAL CASTING

OBJECTIVE: The main objective of the project is to design sheet metal casting using NX CAD.

INTRODUCTION: In this tutorial, I have learned the step by step procedure to design a \'Sheetmetal Casting\' using Seimens NX Sheetmetal Application.

WORKFLOW:

DESCRIPTION:

STEP 1: INTRODUCTION

• Start NX 12 and create a new Sheet metal design called casting.
• Create a sketch in the XY plane and draw a rectangle centered at the origin with an X-length of 60mm and a Y-width of 50mm.
• Exit the sketch mode.

STEP 2: DESIGN PARAMETER

• Go to Menu>Preference>sheetmetal.
• Change the global parameters to 1mm.

STEP 3: ADDING A SOLID SHEET AND CUTOUT

• Use the Tab button for creating a rectangle metal sheet of 1mm in thickness.
• Create a new sketch in the plane P containing the upper face of the rectangle sheet and parallel to the XY plane.
• In that sketch, draw a rectangle symmetric w.r.t the x-axis which coincides with the left edge. The rectangle is 5mm wide and 40mm long.
• Exit the sketch mode and use the cutout button for making a rectangular hole in the metal sheet.

STEP 4: BENDING

• Again, draw a sketch in the plane P consisting of two symmetric horizontal line w.r.t x-axis.
• Exit the sketch mode and click the bend button.
• Change the angle to 90 degrees.

STEP 5: ADDING FLANGES

• Click on the flange button. Use a length of 5mm and apply the flanges on the sheet metal.
• Apply the same flanges on the below edges of the sheet metal in counterpart.

STEP 6: BREAKING CORNERS

• Click on the break corners button. In the dialog box, use the blend method with a radius of 1mm.
• Apply the break corners to the edges of the metal sheet.

STEP 7: UNBENDING

• Click on the unbend button. In the dialog box, select a stationary face and bend face one of its adjacent faces.

STEP 8a: ADDING HOLES

• Create a sketch in the P plane.
• In the lower part of the sheet metal draw a line in which extremities are located in the middle.
• Draw a point at the center of this line.
• Finally, from that point create asymmetric points w.r.t the x-axis of the datum coordinates system.

STEP 8b: ADDING HOLES

• Click on the hole button. In the dialog box, select M2 as screw size and H13 as fit and through body as depth limit.
• Create four holes centered on the four defined points.

STEP 9a: ADDING A DIMPLE

• In the XY plane, create the following cross sketch, where each half side is 5mm in length.
• Click on the studio spline button. In this dialog box, set by poles as type.
• Select all 16 points in clockwise direction and click OK to validate the new spline curve.
• Click on the move curve button. In this dialog box, select the spline curve set the motion option in transform field to angle.
• Finally, enter an angle of 45 degrees and click OK to validate.

STEP 9b: ADDING A DIMPLE

• Click on the dimple button and select the spline curve.
• Set the depth option to 1mm and sidewalls to material inside.
• Click Ok to validate your dimple.

STEP 10: ADDING BEADS

• In the XY Plane, draw the circle of 5mm in diameter.
• Click on the beads button. In the dialog box, select the circle and set the depth and radius options to 1mm.
• In rounding field, set the die radius to 1mm.

STEP 11: RE-BENDING

• Click on the rebend button.
• Re-bend the face by selecting them.

STEP 12: DRAFTING

• Go to File>Drafting
• Click on base view and specify model view.
• Click Settings>General>change Scale size according to your wish and Click OK to Validate.

MODEL IMAGE:

FRONT VIEW

TOP VIEW

RIGHT VIEW

BOTTOM VIEW

ISOMETRIC VIEW

DRAFTING:

CONCLUSION:

Finally, I conclude the step by step procedure to design a \'Sheetmetal Casting\' using Siemens NX CAD has been understood.