Parts are of great help to mechanical equipment. Among them, precision printers and cutting machines will require the installation of linear shafts, which are used to support transmission shaft parts. These parts have higher requirements for accuracy. Let me talk about it below. Talk about the reasons that will affect the accuracy of the linear shafts.
Generally, the supporting journal is determined according to the industry or working conditions required by the precision linear shaft. In order to determine the position of the shaft, its dimensional accuracy is usually high, but the dimensional accuracy of the journal for assembling transmission parts Generally lower requirements. For a precision linear shaft with ordinary precision, the radial runout of the matching shaft section to the supporting journal is generally 0.010.03mm.
For high{{0}}precision shafts, the radial runout of the supporting journal is usually 0.0010.005mm. In this process, it is usually necessary to ensure the coaxiality of the shaft journal of the transmission part to the supporting shaft journal. Otherwise, it may affect the transmission accuracy of the transmission part or cause noise.
In the precision of the geometric shape of the precision linear shaft, the requirements for the accuracy of the inner and outer surfaces are relatively high, so we should mark the allowable deviation on the drawing. Of course, in addition to the inner and outer circular surfaces, the roundness and cylindricity of the journal, outer cone, Morse taper hole, etc. are also within the scope of geometric accuracy.
In addition, it is worth noting that, in the mutual position accuracy of precision linear shaft, the accuracy is generally determined according to the position and function of the shaft in the machine. Before installing the precision linear shaft, the burrs, dirt and surface scars on the mechanical installation surface must be removed. The linear bearing is coated with anti-rust oil. Please clean the reference surface with cleaning oil before installation. Usually, the reference surface is easy to rust after the anti-rust oil is removed. It is recommended to apply lubricating oil to the spindle with lower viscosity.
The above are the factors that will affect the linear shaft. I hope everyone has a new understanding of the linear shaft.
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