Helix Linear Technologies Blog | Articles, how-tos and information on the latest linear motion topics.

Lead and acme screws are used for a variety of linear motion control applications, ranging from syringe pumps to pan-and-tilt systems for security cameras. However, one of the more interesting applications of these screws involves their use for driving the fin actuation that guides a missile to its target.

Lead screws have increasingly become the linear motion control solution of choice for mechanical design. The use of lead screws for providing actuation in machine designs and other types of mechanical design is growing because of advances in lead screw design, screw and nut materials, and manufacturing technologies.

Configuring an acme screw assembly that will not only perform but endure the demands of a linear motion application, requires a thorough understanding of the load requirements. Evaluating your loading conditions extends beyond the load that you want to move and the distance that you want to move it - it includes the effects of your application on the screw assembly itself.

A staple for controlling linear motion for more than a century, the acme screw (a lead screw with a trapezoidal thread form angle of 29º) continues to be the best option for driving many of today’s motion control applications where efficiency is critical.

In a global economy, product developers have many options for sourcing the manufacturing of linear motion control systems and engineered components. While some manufacturers have outsourced actuator work overseas, an increasing number are reaping the benefits of working with a state-of-the-art US-based manufacturing facility, such as those operated by Nook Industries and its HELIX™ Linear Technologies subsidiary.

Selecting the right motion control system can often mean the difference between success and failure. To optimize performance, reliability, maintenance requirements, and service life, design engineers should conduct a thorough evaluation of their options in conjunction with configuring the most suitable lead screw as a means to drive the specific application.

The reason electric linear actuators are a preferred choice for converting rotary motion into linear motion is that they have many advantages.

Acme screws provide distinct advantages for many of today’s linear motion applications, such as the motion control systems incorporated in many lead screw medical devices.

Helix has recently introduced its precision miniature lead screw designs for light load medical device design and applications that deliver fast speed and close tolerance positioning. Designed for compact applications that require the dual ability to be fast and precise - ideal for accurate positioning requiring a rapid approach and retraction.

Most design engineers know that a mechanical linear actuator is a device that converts rotary motion into linear movement—such as lead screws, ball screws, and acme screws.