- The screw nut is a linear mechanical transmission device, which converts rotary motion to reciprocating motion with high precision, low frictional force.
- The standards of vitme you want to use should depend on your industry, application and machine, the environment you are working in and the location of the vitme. Some very common standards are: accuracy grade, ball screw size and load tolerance. Ball screw shafts are always machined from steel.
The ball screw has two parts: the screw and the nut The ball nut runs up and down the spiral grooves of the screw shaft on the ball bearing. To work, the thread of the nut and the thread of the screw must match. Together, the nut and threaded screw are called the lead-screw assembly;
Note that the nut is a non-contact ball; it works without touching the screw. In more detail, this movement begins with the bearings rolling in the groove of the thread, which simultaneously produces smooth motion and rolling friction. Next, the bearings encounter a deflector, which is placed inside the nut's return system, which redirects them to the opposite end of the nut. Therefore, the balls are constantly recirculating.
To meet many different needs, ball screws are divided into many types with different accuracy levels: C7, C5, C3…
- Ball-rolled vitme
So named because, starting as blank metal ingots, they are formed through cold screw rolling. These cold-rolled ball screws offer the advantage of position accuracy of a few thousandths of an inch per foot.
- Sharpened tooth ball Vitme
Extremely precise, performed in three steps: machining to rough shape, case hardening and grinding. This grinding takes place on fast spinning machines coated with abrasive materials. This treatment gives the grinding tooth ball screws to perfection the ability to withstand temperatures that often distort their shape and reduce their effectiveness. The best grinding tooth ball screw for applications where not only high precision is required, but also high rigidity is required.
- The balls in the ball screw assembly, rely on point contact to support the load, point contact creates less friction, resulting in higher assembly efficiency. Therefore, they serve the applications of with efficiency levels up to approximately 90%. At the same time, they maintain low energy consumption.
They also offer low tolerances, the ability to withstand high thrust loads and low levels of friction. In addition, they can run at low temperatures, making the system last longer.
- Ensures stable movement because frictional force is almost independent of speed;
Some of the industries that use vitme include the following:
- Industrial machinery, semiconductor industry,
- Manufacturing and building robots, automobiles, aerospace, military and defense,
- Types of machine tools
- Nuclear energy and mechatronics.
When designing ball bearings and assemblies, manufacturers think of factors such as load type (static vs dynamic load), load weight, required critical speed (frequency triggering rate) nature of the screw), installation type, environment (possibility of exposure to dirt, dust and other contaminants), temperature, frequency of use and required accuracy.
Based on these conditions, manufacturers offer choices in terms of material, ball nut shape (round nut, flange nut or custom nut), protective coating, lubrication, size, etc. ball nut size (ball circle diameter), screw diameter (base diameter, groove, lead, etc.), screw load direction and mounting type.
During the design process, the manufacturers decide whether to build you a preloaded ball screw system. Preload is a type of positioning that makes the assembly more rigid. It does so by eliminating the clearance between the ball nut and the ball screw. .
A well-maintained ball screw, properly lubricated, and unimpeded like dust, will prove itself to be an indispensable component in many operations. Therefore, you need to lubricate and maintain vitme regularly.
To make sure your ball screw assembly is effectively usable, consider its preload. Clusters have stiffer preloads, which helps some systems. If you need specific advice, you can contact us for support.
Also, check the ball nut component to make sure it aligns. Otherwise, your ball vitme could be significantly damaged. Next, we also recommend leaving your ball screws in their packaging until you need them for installation. As any dirt that adheres to them can adversely affect vitme's performance. Likewise, if you plan to store your ball screws for a long time, you need to rotate them every few months so that the oil on the screw is evenly distributed over the entire screw operation. .