Chamfer and Fillet on Graphic Lines by 2D Constructs

The command can be called in one of the following ways:

The command allows you to create various types of fillets and chamfers without preliminary construction. This modifies the existing elements of the drawing and creates new ones.

When the command is called, the Chamfer Parameters appears, where the user can select the type of chamfer and set its parameters.

Further, using the automenu options, it is necessary to select the nodes or graphic lines that are decisive for the formation of the chamfer.

T-FLEX CAD supports three main techniques of creating chamfers:

Chamfer creation by a node through which the hatch contour is passing

This technique is intended mainly for creating chamfers at the drafting stage when the graphic lines are not created yet. A chamfer created in this way is drawn as a construction entity.  Later, you will have to apply graphic lines over this chamfer manually. On the other hand, if the graphic lines were created before introducing the chamfer, then the chamfer will be displayed as a graphic entity. This technique is intended for constructing only isolated chamfers. Therefore, when constructing chamfers on the surfaces of revolution or two-sided chamfers on the edges of faceted parts, you will have to add the missing construction lines manually.

Remember that this chamfer creation technique works only in the case when the parameter is set among the operation parameters, Auto change Hatches.

After selecting the type of the chamfer being created and defining the necessary parameters, you need to select the node at which the chamfer will be constructed. This is done by the option .

The selected node must belong to a hatch contour. Upon selecting the node, the chamfer and the construction entities used for its creation are constructed automatically according to the specified parameters.

The direction of creating the angular chamfer is determined by the system automatically (depending on where the hatch contour lies).

Chamfer creation by the node through which two graphic lines are passing

This technique is used when the graphic lines are already applied on the drawing. A chamfer created in this way is drawn as a graphic entity. All construction entities necessary for the chamfer creation are produced automatically.

When creating a chamfer in this way, make sure that no more than two graphic lines are passing through the selected node. Otherwise, we recommend using another way of chamfer creation, described below.

To create an isolated chamfer, in the operation parameters select the necessary chamfer type and set the necessary parameters. After that, specify the node through which two graphic lines are passing. The direction of creating the angular chamfer is determined by the system automatically (depending on where the graphic lines lie).        

For inner chamfer creation, we recommend using the special chamfer types intended for this purpose. The pointer should be positioned in this case on the necessary side of the chamfer creation.

In order to make a chamfer on the other side, it is necessary to activate the Symmetric checkbox in the chamfer parameters or position the cursor on the other side of the node.

When creating dual chamfers, upon defining the parameters just select two nodes where two respective pairs of graphic lines intersect. The pointer position is of no importance in this case.

Chamfer creation by graphic lines

This technique, as well as the previous one, is used when the graphic lines are already applied on the drawing. The chamfer created in this way is displayed as a graphic entity. The existing graphic entities are modified, and all necessary construction entities necessary for the chamfer creation are produced automatically in the process.

When creating an isolated chamfer in this way, then, upon selecting the chamfer type and defining the necessary parameters, you need to specify two graphic lines intersecting in one point. The graphic line selection is done by or by the option:

In this case, the chamfer distance will be counted from the first selected graphic line.        

When creating dual chamfers, then, upon defining the necessary parameters, you just need to select their common graphic line lying in between.

In this case, each end point of this line should be connected with exactly one graphic line.

In the ambiguous cases, when more than two lines pass through the end nodes, or the lines intersect without passing through the end nodes, then three graphic lines need to be selected for the dual chamfer creation, in the order starting with the common line of the to chamfers.

   

Note that a corner chamfer can only be created on straight lines in the graphic.

When creating any type of a chamfer, error messages are displayed on the screen in the cases of incorrect element definition.

Chamfer parameters

Radius/Distance. Defines the radius of the inscribed circle in the case of the fillet-type chamfer, or the distance in the case of the corner chamfer.

Angle. This parameter is accessible only when the corner chamfer is selected, and defines the angle of the chamfer being created.

Symmetrical. This parameter is accessible only when making the corner chamfer. Setting this parameter grays out the parameter Angle, since only the distance is required for defining the symmetrical chamfer.

Style from original With this parameter set, the chamfer-making line strokes will have the same parameters as the graphic lines on which the chamfer is based. Otherwise, those strokes will have the parameters currently used by the command Create Graphic Line or Create Sketch.

Auto change Hatches. Setting this parameter causes automatic adjustment of the defining hatch to geometry of the chamfer being created. It also makes possible creating a chamfer as a construction element at the node through which the hatch contour is passing.

Show this dialog when command starts. If this parameter is set, this dialog box will be automatically launched upon entering the command. If the parameter is cleared, you will have to call the dialog by the option Set command options (the icon <P>).