Lead screws are an excellent linear motion product that converts rotary motion to linear motion very economically and until recently offered only moderate accuracy and repeatability. Today's top manufacturers are producing standard lead screws with +/- 0.003"/inch lead accuracy and even better on request. These companies are also producing wide ranges of sizes and leads to choose from and readily produce custom sizes and shapes of nuts to fit these screws. Here are three tings that every engineer should keep in mind when selecting any lead screw.
Welcome to the Helix Linear Technologies Blog
Feb 22, 2017 8:36:00 AM
Topics: Precision Lead Screws
Apr 19, 2016 2:32:34 PM
Lead screws are the norm for today's linear motion applications but despite the lead screw's advantages over competing technologies (i.e. affordability, precision, the ability to design with freedom, reduced maintenance, etc.), lead screw systems do have a certain amount of “play". An important design consideration for utilizing a lead screw is the amount of backlash your system can tolerate and still achieve it's goal. The big question is - which lead screw nut will help you in the battle against backlash?
Mar 2, 2016 2:09:35 PM
Feb 17, 2016 8:52:28 AM
Getting some fresh air is always a good idea right? It wakes you up, refreshes you or even changes your mindset. But what happens when the air starts to get stale?
Pneumatic actuators have been the staple of industry for years, and have been sold as being compact, fast and low cost. Their compact size is due to the remote location of their power unit, the air compressor. Fast response is due to the sudden inrush of air for activation. Low cost because the air cylinder by itself is inexpensive. Electric actuators have made steady inroads to the air actuator market due to advances in control technologies, materials and automation disciplines.
Feb 11, 2016 6:30:00 AM
We have all been there – you saw a great idea and thought “I can do that”. Whether it was a repair on your car, a landscaping project in your backyard, or even a craft idea for your house, we have all had a DIY project go wrong. There is nothing wrong with attempting a project on your own - if it works out.
The same thing goes for linear motion. You know the basics behind it so building your own linear actuator should be easy – right?
Everything can be found online so you start ordering from different manufactures. All of your pieces arrive in the mail eventually and it is time for assembly. Hours later you have something that sort of resembles what you were trying to build and the questions start.
Why do I have an extra piece? Why isn’t my leadscrew turning? Why did all of this cost so much? Why did I even try to do this on my own? Why can’t I just buy a linear actuator that is ready for me to use?
Aug 31, 2015 1:12:58 PM
Beachwood, OH – August 27, 2015 – Helix Linear Technologies has hired Dave Arguin to help expand a steadily growing list of national and international lead screw and linear actuator clients.
After spending 15 years with Kerk Motion Products and then 7 years with Haydon Kerk – Ametek, Dave has established himself as a knowledgeable and innovative leader in the linear motion industry.
Topics: About Helix
Aug 18, 2015 2:53:00 PM
Stepper motor driven screw linear actuators have been used for a while in a variety of applications. Integrated motor screw units used to only be available in high volume runs or too costly to consider. Building your own with expensive couplings and support bearings, mounting and aligning the assembly – add up to overwhelming costs. Helix has combined manufacturing technology, precision hybrid motors and standard lead screw components to make low volume runs an affordable modern option.
Apr 28, 2015 11:10:00 AM
Apr 8, 2015 12:51:54 PM
In order to ensure that an acme lead screw serves a particular application correctly, there are a variety of factors that need to be considered. In fact, there are four primary things to consider when it comes to lead screw selection: load, speed, length of travel and end fixity. In this article we are going to take a closer look at end fixity and how it relates to the proper mounting of your lead screw assemblies.
For the purpose of this discussion, we will define end fixity as the method by which the ends of the acme lead screw are supported within a given linear motion application.
Mar 25, 2015 8:18:00 AM
When it comes to lead screw performance, it's all about axial load and rotational speed (RPM). As you likely know, the relationship between these two factors is known as "pressure velocity", or the PV curve. Simply put, this PV curve defines the safe limits of load and speed. For instance, as load increases, speed must be reduced in order to prevent excess heating and premature screw wear.