Sheet Metal Form
Create form features on existing sheet metal models. Forms can be selected from the current document, other documents, or a predefined library of sheet metal forms.


Onshape ships with some standard forms in the Onshape sheet metal forms library. If you prefer to use your own custom form, it must first be created before it can be accessed in the Form feature dialog. See Creating a form for more information.
Before adding a Form feature, ensure you have a sheet metal model created in a Part Studio.
- From the Part Studio where the sheet metal model is located, click the Form icon (
) on the Feature toolbar.
- Click the Select Part Studio field to open the Select Part Studio dialog:
Select from the Current document, Other documents, or Sheet metal forms (where the Onshape sheet metal forms library or user and enterprise/company form libraries can be selected).
Select the Library, Type (the document in which the form is created), and Form (the Part Studio in which the form is created).
If there is only 1 form in 1 Part Studio in the document, the Type field is not displayed.
If additional configuration variables are available for your form, enter their values as required. For the Bridge lance example here, the Length, Width, Height, and Angle variables are available for the form.
Fai clic su Fine per aggiungere la forma.
- Select the form Location(s) by selecting sketch vertices, points, or explicit mate connectors. You can also click the Mate connector icon (
) and hover over the model to select implicit mate connectors.
- Se necessario, fai clic sulla freccia della direzione opposta (
) per invertire la forma nella direzione opposta sulla faccia di destinazione.
- Se non è già selezionata, seleziona laFaccia di destinazioneo le facce di destinazione della lamiera su cui posizionare la forma.
- Click the checkmark (
) to accept the new Form feature.
The form is added to the Sheet metal model and flat pattern:

The Louver form design below shows the form's top, side, and isometric views with its corresponding Tag feature (top). This form is then used in a Form feature and applied to the sketch points on the face of a sheet metal model (bottom).
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The Tag feature uses the blue Add part to add to the sheet metal model and the gray Subtract part to remove from it.
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The placement of the mate connector drives the Subtract part through the sheet metal and simultaneously attaches the Add part to the sheet metal.
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The Form origin mate connector (Mate connector 1) from the form's Tag feature determines the form's origin. When this form is placed on the sketch vertices (Vertices of Sketch 2) on the sheet metal face (Face of sheet metal model 1), the form's mate connector aligns with the sheet metal's sketch vertices.
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Alternatively, an explicit mate connector can be used to align the form to the sheet metal model. In the example below, a mate connector (Mate connector 2) is used for the Form feature's Location instead of the sketch vertices. The mate connector's secondary axis is rotated 180 degrees, and both the Mate connector and Form features are patterned to create the same model as above, but with the louvers rotated.
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Forms cannot touch or cut into the boundaries of side walls, rolled walls, rips, joints, or corners of the sheet metal.
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Corner breaks do not work on any form feature edges. It is recommended they be modeled during the creation of the custom form.
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When exporting the Sheet metal flat pattern as a DXF/DWG file, form feature outlines and centermarks can be included or excluded. See Exporting DXF/DWG of flat pattern.
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Inserting a Flat pattern into a drawing also inserts its form features, such as form outline and centermarks. See Flat pattern view.
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Toggling the visibility of the Form feature in the Features list toggles the sketch visibility on the Sheet metal flat view (if a sketch is associated to the underlying form in its Tag feature):
Form sketch visible on Sheet metal flat view
Form sketch hidden on Sheet metal flat view

Quando un modello di lamiera è attivo (durante la creazione o la modifica), sono disponibili strumenti aggiuntivi:
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flangia - Crea un muro per ogni bordo selezionato, collegato allo spigolo selezionato con una piega.
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Orlo: crea un orlo per ogni bordo o faccia selezionati, su una lamiera esistente.
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Tab - Aggiungere una linguetta a una flangia in lamiera.
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Curva - Piegate un modello in lamiera lungo una linea di riferimento, con opzioni di controllo della piegatura aggiuntive.
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Form - Create form features on existing sheet metal models. Forms can be selected from the current document, other documents, or a predefined library of sheet metal forms.
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Crea un giunto - Convertite l'intersezione di due pareti in una caratteristica di giunzione, una piegatura (pareti unite da una geometria cilindrica) o uno strappo (piccolo spazio tra due pareti).
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Angolo - Modificate il tipo di angolo e la scala di rilievo.
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Rilievo di pieg - Modificare un rilievo di piegatura (il piccolo taglio eseguito nel punto in cui l'estremità della piega incontra lo spigolo libero), la profondità e la larghezza del rilievo.
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Modificare il giunto - Apporta modifiche a un giunto esistente, ad esempio convertendo una piegatura in uno strappo. Attualmente disponibile nella tabella di visualizzazione piatta.
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Interruzione spigolo: interrompe lo spigolo sulle parti in lamiera esistenti applicando un raccordo o uno smusso. Seleziona un bordo o vertice d'angolo e specifica il tipo e la distanza di interruzione dello spigolo. Consigliamo di utilizzare questa funzione dopo aver completato tutte le flange e gli spigoli chiusi del modello lamiera.
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Tavolo in lamiera e vista piana - Aprire e chiudere le tabelle Rip/Bend e la visualizzazione dello schema piatto del modello in lamiera. Utilizzate questa tabella per convertire gli strappi in piegature e viceversa.
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Disattiva modello lamiera: chiude (disattiva) il modello lamiera; crea una funzione nell'elenco funzioni.

iOS and Android support for the sheet metal form feature is limited to viewing forms that are created from the desktop (browser) platform.

Quando un modello di lamiera è attivo (durante la creazione o la modifica), sono disponibili strumenti aggiuntivi:
-
flangia - Crea un muro per ogni bordo selezionato, collegato allo spigolo selezionato con una piega.
-
Tab - Aggiungere una linguetta a una flangia in lamiera.
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Crea un giunto - Convertite l'intersezione di due pareti in una caratteristica di giunzione, una piegatura (pareti unite da una geometria cilindrica) o uno strappo (piccolo spazio tra due pareti).
-
Angolo - Modificate il tipo di angolo e la scala di rilievo.
-
Rilievo di pieg - Modificare un rilievo di piegatura (il piccolo taglio eseguito nel punto in cui l'estremità della piega incontra lo spigolo libero), la profondità e la larghezza del rilievo.
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Interruzione spigolo: interrompe lo spigolo sulle parti in lamiera esistenti applicando un raccordo o uno smusso. Seleziona un bordo o vertice d'angolo e specifica il tipo e la distanza di interruzione dello spigolo. Consigliamo di utilizzare questa funzione dopo aver completato tutte le flange e gli spigoli chiusi del modello lamiera.
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Disattiva modello lamiera: chiude (disattiva) il modello lamiera; crea una funzione nell'elenco funzioni.

Form libraries are special folders that contain forms. These are parts in Part Studios that are used as templates to add to — or remove from — sheet metal models. Each enterprise/company can have one form library that is owned by an administrator and given share permissions for the enterprise/company so that everyone in the enterprise/company can access and use the forms in the designated folder. In addition, each individual can set up one form library for their own personal use. No special permissions are required for this folder. This personal form library is accessed and used by the individual user.
Onshape provides standard sheet metal form content in the Onshape sheet metal forms library. See Onshape sheet metal forms library for more information.

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Parts are created and stored in Part Studios. The Documents containing these Part Studios are then saved in Onshape folders. Depending on how you want to set up and organize your library, create a folder from the Documents page (Create > Folder). Enterprise/Company libraries must be created in the root folder.
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Se si tratta di una libreria Enterprise/aziendale, dalla pagina dei documenti:
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Fai clic sull'icona Condividi
nella cartella principale della gerarchia per aprire la finestra di dialogo delle impostazioni di condivisione:
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Seleziona la scheda Team.
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Cerca e aggiungi il team Tutti gli utenti Enterprise/dell'azienda.
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Seleziona le caselle di controllo Collega documento e Condividi.
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Fai clic sul pulsante Condividi:
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Fai clic sul pulsante Chiudi.
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On the Documents page, right-click on the form folder and select Set library > My sheet metal forms. When the library is first set up, the folder icon changes to indicate this folder is a form library (
):

Forms do not need to exist in a form library. You can create a form in the same document as your sheet metal model or any other document outside the form library.
A form part must have the following 2 conditions met:
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The Part Studio that contains the part must have a configuration variable named thickness, and its Type must be set to Length.
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The form part(s) must be tagged.
You can have only 1 valid form tag feature per Part Studio. Create 1 form per Part Studio.
A document version must also be created if you are externally referencing the form from another document.
Do the following to create a form document:
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If you are creating the form in a user or enterprise/company form library folder, go to that folder and click Create > Document. Otherwise, open the document in which you want to create the form and Insert a new Part Studio tab.
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In the Document's Part Studio tab, create one or more parts that define the form. These can be parts that are added to or removed from the sheet metal (or both).
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Crea una variabile di configurazione con il seguente formato:
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Nome = spessore
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Tipo = Lunghezza
The thickness FeatureScript ID is used to drive the form thickness from the Sheet metal model feature's Thickness value. See Editing configurations and tables for more information.
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(Optional) Use additional configuration variables when creating the form. When the form is selected via the Form feature's Select Part Studio dialog, these variables are displayed as input options beneath the form:
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Create a Tag feature, and tag the part(s).
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Fai clic su Crea versione nel pannello Documento. Inserisci un nome di versione e una descrizione opzionale, quindi fai clic sul pulsante Crea:
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If the form document exists in a user or company/enterprise form library, update the form library.
See the steps section above for information on how to add this form to your sheet metal model.

From the Documents page right-click on the form library folder and select Sheet metal form library > Unset my library (shown below). This removes the folder's designation as the user or enterprise/company library but does not delete the folder or its content. The folder changes to a standard folder icon to indicate that it is a standard folder ().

If changes are made to a form document inside a form library folder, the folder must be updated to have the new changes propagate to any Form features that reference the form.
From the Documents page right-click on the form library folder and select Sheet metal form library > Update my library:

If a form is updated in the form library, any existing models that reference that form still use the previous form. To update the form
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Open the Sheet metal model document that uses the form.
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Double-click the Form feature on the Features list.
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Click the Form Part Studio field (Louver C in the image below) to open the Select Part Studio dialog.
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The Form label displays (previous version) and the generic form thumbnail is shown, both indicating the model is using an older version of the form. Click the Form dropdown to open the selection menu:
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Select the updated form from the list and click Done:

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Forms do not need to exist in a form library. Any part from any Part Studio can be used as long as it is a valid form document and meets the form document requirements.
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Form library folders cannot be deleted. First, unset the folder, then delete it.
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Share permissions for form library folders cannot be edited. First, unset the folder. Then edit the folder’s share permissions.
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Create several Part Studios, each with their own form, and all located in 1 document. If multiple forms exist in a document, the Select Part Studio dialog displays a new Type field which displays the document's name, and the Form dropdown, where the Part Studio is selected:
1 form in 1 Part Studio in a document (left); multiple forms in multiple Part Studios in a document (right)