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Basic requirements for rail depiction
Source: China Bearing Network Time: 2018-03-01
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The precision of a linear motion guide usually includes: the straightness in a straight plane and a horizontal plane, and the parallelism between the two rail faces. The accuracy of the rail can be indicated by an error in the entire length of the rail or an error in the unit length.
2. Accuracy Persistence Accuracy Persistence refers to the ability to adhere to the original precision during the operation of the guide rail. The accuracy of the guide rail depends mainly on the wear resistance of the guide rail and the extreme dimensional stability. The wear resistance is matched with the data of the guide rail pair. , processing precision, smooth method and the function of the protective equipment; other; the residual stress in the guide rail and its support will also affect the accuracy of the guide rail.
3. Motion Sensitivity and Positioning Accuracy Motion sensitivity refers to the minimum stroke that a moving member can perform. Positioning accuracy refers to the ability of a moving member to stop at a specified orientation as required. Motion sensitivity and positioning accuracy and rail type, collision characteristics, motion speed, transmission stiffness Related to the quality of moving components.
4. The smoothness of the movement of the guide rail is the function of the guide rail when the low speed movement or the slight movement is not presented. The smoothness is matched with the layout of the guide rail, the matching of the guide rail auxiliary materials, the smooth condition, the smoothing property and the transmission system of the guide rail. Related to stiffness and other elements.
5. Anti-vibration and stability Anti-vibration refers to the ability of the guide rail to accept forced oscillation and impact; and stability refers to the function of self-excited oscillation under given working conditions.
6. The stiffness guide rail resists the ability of the force deformation. The deformation will affect the relative orientation and guiding precision between the components; this is especially important for precision machinery and instruments. The guide rail deformation includes the deformation of the rail body deformation guide rail; both should be considered.
7. Layout process layout processability refers to the difficulty of processing the guide rail pair (including the sub-point component of the guide rail). Under the premise of satisfactory depiction of the demand; it should be as convenient as possible to make and repair; the cost is low.
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