Sheet Metal Corner Break

To create a filleted corner break on a sheet metal model:

1. While in a Part Studio with an existing sheet metal model, click Corner break ().

   

2. Select Fillet for the corner break type.
3. Select a corner edge or vertex on the sheet metal model in the graphics area. A corner edge or vertex can also be selected in the flat view section of the Sheet metal model and flat view.
4. Select the measurement type, either:
   1. Radius - Specify the radial measurement of the fillet.
   2. Width - Specify the distance between the two ends of the fillet (a constant width).
5. Select a Control type:
   • Distance - Fillet has a circular edge with the radius value entered. Onshape remembers this value when creating new fillets.
   • Conic - Fillet has a conical edge with the radius value you enter and optionally a Rho value to define the style of the fillet:

     

     Rho values: 0.25 (left; elliptical curve): 0.5 (middle; parabolic curve); 0.999 (right; hyperbolic curve - zoomed in)

   • Curvature - Fillet matches the curvature of the surrounding edges with a radius value you enter and optionally a Magnitude value between 0 and .999 to adjust the tangency. Turn Zebra stripes on (from the Show analysis tools menu) to see the tangency more clearly:

     

   When entering a radius value you can also use the drag manipulator, as indicated in the image below by an arrow, to visualize the fillet and approach an estimated value:

   

   Onshape remembers the selection for Measurement type and value and opens the dialog with the last selected option in subsequent operations.

6. Check Asymmetric and enter a Second radius to have a different fillet edge radius value on one end of the filleted edge. Click the Flip asymmetric arrow to use the other end of the fillet as the second (asymmetrical) fillet edge.
7. By default, Allow edge overflow is disabled. Check to allow the tangent edges to be 'deleted' from the fillet surface, if necessary. The edges that are generated by default strictly constrain the direction of the fillet along the fillet edges. When Allow edge overflow is enabled, the fillet can modify edges on the face created by the fillet to make a smooth, continuous surface. When the option is unchecked, the edges on the filleted face are preserved, resulting in a more free-flowing part.

   Click the Allow edge overflow dropdown to open a field where you can select edges to keep.

8. Click the checkmark () to accept the new Corner break feature.

To create a chamfered corner break on a sheet metal model:

1. While in a Part Studio with an existing sheet metal model, click Corner break ().

   

2. Select Chamfer for the corner break type.
3. Select a corner edge or vertex on the sheet metal model in the graphics area. A corner edge or vertex can also be selected in the flat view section of the Sheet metal model and flat view.
4. Select the measurement type, either:
   1. Offset - Sets the distance entered in the Distance field from the starting edge to the chamfer. This option is edge dependent; computation starts at the first selection and then progresses through the chain.
   2. Tangent - Sets the distance entered in the Distance field from the intersection of the tangent of the two adjacent faces to the chamfer. This option is NOT edge dependent.
5. Select a Chamfer type:
   • Equal distance - Chamfer will extend an equal distance from the edge in both directions.
   • Two distances - Chamfer will extend a different distances in each direction.
   • Distance and angle - Chamfer will extend the specified distance in one direction and by the specified angle in the other.
     

     Onshape remembers the selection for the Chamfer type and opens the dialog with the last selected option in subsequent operations.

6. Enter the Distance(s) for the chamfer. Onshape defaults to 45 degrees for the angle, but remembers the last inputted distance value for Equal distance and Distance and angle chamfers.
7. If you selected Two distances or Distance and angle, click the arrow button to flip the direction of all edges, or specify individual edges to flip in the Direction overrides field.
8. Click the checkmark () to accept the new Corner break feature.

• After a Corner break feature is applied, all model Joints' Type (Rip or Bend) and Style (Edge joint or Butt joint) are no longer editable in the Sheet metal table and flat view. It is recommended to add any Corner break features after finalizing all edits to the Sheet metal model's flanges and joints.

  

  Before Corner break feature applied (top); after Corner break feature applied (bottom)

• You can use Corner break to apply fillets or chamfers to Bend relief edges and vertices, in addition to corners:

  

• You cannot add multiple fillets, chamfers, or a combination of both on corners using a single Corner break feature. Create an additional Corner break feature to add an additional fillet or chamfer to any vertex or edge of a previously-existing Corner break feature:

  

  Fillet applied to a chamfered edge using a second Corner break feature

When a sheet metal model is active (in the process of being created or edited), additional tools are available:

• 凸緣 - 為每條所選的邊線建立牆面，使用彎折來連接所選的邊線。
• 摺邊 - 在現有的鈑金零件上為所選取的邊線/面建立摺邊。
• 薄板頁 - 將一個薄板頁加入至鈑金凸緣中。
• Bend - Bend a sheet metal model along a reference line, with additional bend control options.
• 製作接合 - 將兩個牆面的相交處轉換為一個接合特徵，可以是一個彎折 (以圓柱幾何接合牆面)，或是一個裂口 (兩個牆之間的小間隙)。
• 轉角 - 修改轉角類型與止裂比例。
• 彎折止裂 - 修改彎折止裂 (在彎折結束與自由邊線交會處做出的小切除)、深度與止裂寬度。
• Modify joint - Make changes to an existing joint, such as converting a bend to a rip. Currently available through the flat view table.
• Corner break - Break the corner on existing sheet metal parts by applying a fillet or chamfer. Select a corner edge or vertex and specify corner break type and distance. It is recommended to use this feature after all flanges and joints of the Sheet metal model are finalized.
• Sheet metal table and flat view - Open and close the Rip/Bend tables and the visualization of the sheet metal model flat pattern. Use this table to convert rips to bends and vice versa.
• 完成鈑金模型 - 關閉 (停用) 鈑金模型；建立特徵清單中的特徵。

To create a filleted corner break on a sheet metal model:

1. While in a Part Studio with an existing sheet metal model, tap Corner break ().

   

   Corner break: Fillet dialog for iOS (first image above) and Android (second image above)

2. Tap Fillet for the corner break type.
3. Select a corner edge or vertex on the sheet metal model in the graphics area.
4. Select the measurement type, either:
   1. Radius - Specify the radial measurement of the fillet.
   2. Width - Specify the distance between the two ends of the fillet (a constant width).
5. Select a Control type:
   • Distance - Fillet has a circular edge with the radius value entered. Onshape remembers this value when creating new fillets.
   • Conic - Fillet has a conical edge with the radius value you enter and optionally a Rho value to define the style of the fillet:

     

     Rho values: 0.25 (left; elliptical curve): 0.5 (middle; parabolic curve); 0.999 (right; hyperbolic curve - zoomed in)

   • Curvature - Fillet matches the curvature of the surrounding edges with a radius value you enter and optionally a Magnitude value between 0 and .999 to adjust the tangency.

   When entering a radius value you can also use the drag manipulator, as indicated in the image below by an arrow, to visualize the fillet and approach an estimated value:

   

   Onshape remembers the selection for Measurement type and value and opens the dialog with the last selected option in subsequent operations.

6. Toggle Asymmetric on and enter a Second radius to have a different fillet edge radius value on one end of the filleted edge. Toggle the Flip asymmetric arrow to use the other end of the fillet as the second (asymmetrical) fillet edge.
7. By default, Allow edge overflow is toggled off. Toggle this option on to allow the tangent edges to be 'deleted' from the fillet surface, if necessary. The edges that are generated by default strictly constrain the direction of the fillet along the fillet edges. When Allow edge overflow is enabled, the fillet can modify edges on the face created by the fillet to make a smooth, continuous surface. When the option is toggled off, the edges on the filleted face are preserved, resulting in a more free-flowing part.

   Tap the Edges to keep field and select any edges to keep in the graphics area.

8. Tap the checkmark to accept the new Corner break feature.

To create a chamfered corner break on a sheet metal model:

1. While in a Part Studio with an existing sheet metal model, tap Corner break ().

   

   Corner break: Chamfer dialog for iOS (first image above) and Android (second image above)

2. Tap Chamfer for the corner break type.
3. Select a corner edge or vertex on the sheet metal model in the graphics area.
4. Select the measurement type, either:
   1. Offset - Sets the distance entered in the Distance field from the starting edge to the chamfer. This option is edge dependent; computation starts at the first selection and then progresses through the chain.
   2. Tangent - Sets the distance entered in the Distance field from the intersection of the tangent of the two adjacent faces to the chamfer. This option is NOT edge dependent.
5. Select a Chamfer type:
   • Equal distance - Chamfer will extend an equal distance from the edge in both directions.
   • Two distances - Chamfer will extend a different distances in each direction.
   • Distance and angle - Chamfer will extend the specified distance in one direction and by the specified angle in the other.
     

     Onshape remembers the selection for the Chamfer type and opens the dialog with the last selected option in subsequent operations.

6. Enter the Distance(s) for the chamfer. Onshape defaults to 45 degrees for the angle, but remembers the last inputted distance value for Equal distance and Distance and angle chamfers.
7. If you selected Two distances or Distance and angle, tap the arrow button to flip the direction of all edges, or specify individual edges to flip in the Direction overrides field.
8. Tap the checkmark to accept the new Corner break feature.

• After a Corner break feature is applied, all model Joints' Type (Rip or Bend) and Style (Edge joint or Butt joint) are no longer editable in the Sheet metal table and flat view. It is recommended to add any Corner break features after finalizing all edits to the Sheet metal model's flanges and joints.

• You can use Corner break to apply fillets or chamfers to Bend relief edges and vertices, in addition to corners:

  

• You cannot add multiple fillets, chamfers, or a combination of both on corners using a single Corner break feature. Create an additional Corner break feature to add an additional fillet or chamfer to any vertex or edge of a previously-existing Corner break feature:

  

  Fillet applied to a chamfered edge using a second Corner break feature

When a sheet metal model is active (in the process of being created or edited), additional tools are available:

• 凸緣 - 為每條所選的邊線建立牆面，使用彎折來連接所選的邊線。
• 薄板頁 - 將一個薄板頁加入至鈑金凸緣中。
• 製作接合 - 將兩個牆面的相交處轉換為一個接合特徵，可以是一個彎折 (以圓柱幾何接合牆面)，或是一個裂口 (兩個牆之間的小間隙)。
• 轉角 - 修改轉角類型與止裂比例。
• 彎折止裂 - 修改彎折止裂 (在彎折結束與自由邊線交會處做出的小切除)、深度與止裂寬度。
• Corner break - Break the corner on existing sheet metal parts by applying a fillet or chamfer. Select a corner edge or vertex and specify corner break type and distance. It is recommended to use this feature after all flanges and joints of the Sheet metal model are finalized.
• 完成鈑金模型 - 關閉 (停用) 鈑金模型；建立特徵清單中的特徵。