Trapetsiruuvis

Trapetsiruuvis, also known as a trapezoidal screw or ACME screw, is a type of mechanical thread commonly used for linear motion and power transmission. It features an acme thread form, which is characterized by its trapezoidal shape. This thread form is designed for strength and ease of engagement, making it suitable for applications where loads are applied in one direction.

The primary advantage of a trapetsiruuvis lies in its efficiency and durability. Compared to square threads, acme threads are easier to manufacture and less prone to jamming. They also offer better resistance to axial thrust, allowing for smooth and controlled movement. The pitch of the thread, which is the distance between adjacent threads, can vary depending on the specific application requirements.

Trapetsiruuvis are commonly found in various mechanical systems. Examples include lead screws in machine tools like lathes and milling machines, screw jacks for lifting heavy loads, and actuating mechanisms in industrial automation. They are also used in scientific instruments and other equipment that requires precise linear positioning.

The material used for trapetsiruuvis can vary, with common choices including steel alloys, stainless steel, and bronze. The selection of material depends on factors such as the required strength, corrosion resistance, and operating environment. Lubrication is often applied to the threads to reduce friction and wear, ensuring smooth operation and extending the lifespan of the component.