Chamfer

The Chamfer model records beveled edges that the drawing specifies for corners or hole entrances. It stores the leg lengths or angles defining the chamfer geometry, along with tolerance bands, surface finish requirements, and any notes about manufacturing method. Because chamfers can appear on both external profiles and internal bores, the object keeps track of the reference feature and orientation to prevent ambiguity. By normalizing the annotation, the API enables you to automatically program deburring operations, verify compliance with machining standards, or compare revisions that tweak edge break dimensions. Whether the drawing calls out a 45° x 1 mm chamfer or specifies equal legs, this model captures the extracted values so downstream tools can ensure sharp edges are relieved as intended.

Bases: Feature

Represents a chamfer feature in an engineering or technical drawing.

PARAMETER	DESCRIPTION
`reference_id`	Reference ID to identify the object. TYPE: `int`
`label`	A short description of the feature in a human-readable format. TYPE: `str`
`confidence`	Confidence in the feature extraction or interpretation. TYPE: `Confidence \| None`
`quantity`	The number of chamfers or instances. Must be at least 1. TYPE: `int`
`size`	The linear size of the chamfer, such as the width or depth. TYPE: `Size`
`angle`	The angle of the chamfer, typically specified in degrees. TYPE: `Size`

Source code in werk24/models/v2/models.py

class Chamfer(Feature):
    """
    Represents a chamfer feature in an engineering or technical drawing.
    """

    quantity: int = Field(
        ...,
        ge=1,
        description="The number of chamfers or instances. Must be at least 1.",
    )

    size: Size = Field(
        ...,
        description="The linear size of the chamfer, such as the width or depth.",
        examples=[
            Size(
                size_type=SizeType.LINEAR,
                value=Decimal("2"),
                tolerance=Tolerance(
                    tolerance_grade="IT7",
                    deviation_lower=Decimal("-0.1"),
                    deviation_upper=Decimal("0.1"),
                    fit=None,
                    is_theoretically_exact=False,
                    is_reference=False,
                    is_approximation=False,
                ),
                unit="millimeter",
            )
        ],
    )

    angle: Size = Field(
        ...,
        description="The angle of the chamfer, typically specified in degrees.",
        examples=[
            Size(
                size_type=SizeType.ANGULAR,
                value=Decimal("45"),
                tolerance=Tolerance(
                    tolerance_grade="IT8",
                    deviation_lower=Decimal("-0.5"),
                    deviation_upper=Decimal("0.5"),
                    fit=None,
                    is_theoretically_exact=False,
                    is_reference=False,
                    is_approximation=False,
                ),
                unit="degree",
            )
        ],
    )