What is the main role of the steel ball in the linear guide?
The linear motion guide acts to support and guide the moving parts. Linear guides, also known as slide rails, linear guides, and linear slides, are used for linear reciprocating applications. They have a higher rated load than linear bearings, and can withstand a certain amount of torque, enabling high-precision straight lines under high load conditions. Motion. Linear bearings are mainly used in automation machinery, such as machine tools imported from Germany, paper bowl machines, laser welding machines, etc. Of course, linear bearings and linear shafts are used together. Linear guides are mainly used for comparison of precision requirements. On a high mechanical structure, the slider - transforms the motion from a curve to a straight line.
High working accuracy: the movement of the linear guide is realized by the rolling of the steel ball. Not only the friction coefficient is reduced to 1/50 of the sliding guide rail, but also the dynamic and static friction resistance gap becomes small, achieving smooth motion, reducing shock and vibration, and not easy. The creep phenomenon occurs, so the um-level feed positioning accuracy can be achieved, which is beneficial to improve the response speed and sensitivity of the numerical control system.
Significantly reduce the driving power: Since the linear guide motion is very small in friction, only a small amount of power is required to move the machine, which significantly reduces the power loss of the machine, and the heat generated by friction is small. Suitable for high speed, frequent starting and reversing moving parts.
The lubrication structure is simple: the linear guide is equipped with an oil filling hole on the slider, which can directly inject grease into the oil filling gun, or can be connected to the oil supply pipe to be lubricated by the automatic oil supply machine, so that the wear is reduced to less, so that the machine can be used for a long time. Maintain accuracy.
Strong dustproof and sealing ability: The linear guide rail has good anti-skin performance. The two ends of the slider are equipped with a sealed end cap. The bottom of the slider can be sealed with a negative film. At the same time, the sliding rail fixing screw hole is equipped with an anti-spin screw hole cover to prevent dust accumulation. Thereby ensuring the life and performance of the product.
Easy to install and easy to interchange: Due to the precise processing technology, the straightness of the slide rail is high, the mounting screw hole error in the slide rail is small, the installation is convenient, the linear guide rails are interchangeable, and the sliders or slide rails can be replaced separately. It is a linear guide that allows the machine to regain high precision.
The bearing capacity is large and the rigidity is strong: the linear guide adopts the Gothic four-point joint design, and the circular groove with reasonable ratio has not only the contact stress is small, but also the sensitivity and rigidity are greatly improved compared with the V-shaped plane ball point contact. Since the steel ball receives the symmetrical four-point beam system, it can simultaneously load all aspects of the load, and almost no offset occurs, so the rigidity is stronger and the high precision can be maintained.