As shown in the figure below, it is a cover plate with 3 rounded corners. How to make this kind of rounded corner? Let me explain to everyone!
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Open the Solid Works software and click on New
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Select the part and click OK
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Select the reference plane, click on the sketch, and choose the center rectangle
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Draw the dimensions of the following diagram
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Click on stretch cutting, given a depth of 30mm
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Click on the rounded corner
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Select all blue edges of the arrows in the following image, with a chamfer radius of 15mm
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Click on the shell extraction button and set the shell extraction thickness to 1.5mm. The arrow indicates the surface to be removed.
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Generate solid parts
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Draw a sketch of stretch cutting on the surface indicated by the arrow
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Click on entity conversion reference
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Select the blue border at the four corners of the arrow
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Quote sketch
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Click on stretch cutting, select to form to a vertex, and choose the point at the arrow
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The effect after resection
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Click on the sketch and select the line
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Select the surface shown in the following image
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Draw a sketch
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Click on stretch resection, select complete penetration, set thin-walled features, symmetrical on both sides, with a gap of 0.1
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Click OK and use the same method to cut out gaps in the remaining rounded corners
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Click on the entity to convert sheet metal
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Select the blue surface for face 1, and select all arcs at the arrow for the bending edge line
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Set the bending coefficient K factor to 0.5
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Click on the expand button in the following image
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Generate expansion, right-click on the expanded surface to generate CAD format
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Returning to the solid parts of the shell, set the parameters for stretching and cutting, and pay attention to selecting the opposite side cutting
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Generate as shown in the following figure
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Draw a stretching and cutting sketch on the following surface
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Click on stretch and cut to form to a vertex
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Click OK
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Right click on the top blank space
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Click on the surface at the arrow to invoke the surface drawing command, and click on the equidistant surface at the arrow
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Offset distance is half the thickness of the board, 0.75. Offset inward
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Click on the blue surface, click hide
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The following figure shows the offset surface
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Right click on the blank space at the top and select 'Customize'
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Select Command - Surface
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Press and hold the surface flattening command, drag to the top blank space
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Click on the surface flattening button, select the face and vertex according to the arrow
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Unfold the surface. The blue surface in the following image represents the expansion of the rounded corners. Click to export to DXF/DWG to output the expansion
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The above is the method for unfolding two sheet metal parts