螺纹特征

螺纹特征是由轴外表面（外螺纹）或孔内表面（内螺纹）上的螺旋脊（螺纹）组成的机械元件。它们是精密加工部件中装配、运动控制和载荷传递的基础，通过螺旋机构实现牢固连接、精确定位和机械优势。这些特征以严格的公差制造，以确保工业应用中的可靠性和互换性。

螺纹特征基于螺旋原理工作，将旋转运动转换为直线运动，反之亦然。当螺纹部件（如螺栓）相对于配合螺纹（如螺母）旋转时，螺旋几何形状导致轴向位移，产生夹紧力用于紧固或实现受控的直线运动。螺纹牙型（如V形螺纹、方形螺纹）决定了机械性能，如承载能力、自锁能力和效率。

Threaded features operate on the screw principle, where rotational motion is converted into linear motion or vice versa. When a threaded component (e.g., a bolt) is rotated relative to a mating thread (e.g., a nut), the helical geometry causes axial displacement, creating clamping force for fastening or enabling controlled linear movement. The thread profile (e.g., V-thread, square thread) determines mechanical properties such as load capacity, self-locking ability, and efficiency.