1. Geometric accuracy: the so-called geometric accuracy of linear optical shaft piston rod mainly refers to the roundness and cylindricity of journal, outer cone and Morse taper hole, etc. generally, bixu limits its tolerance to the range of dimensional tolerance. For the inner and outer circular surfaces with required accuracy, bixu shall fill in the allowable deviation on the drawing.
2. Mutual position accuracy: the position accuracy requirements of the linear optical shaft piston rod mainly depend on the position and function of the shaft in the machinery. In general, if the assembly of the actuator's journal does not guarantee the coaxiality requirements of the supporting journal, the transmission accuracy of the actuator (gear, etc.) will be affected, resulting in noise. The radial vibration of the general precision shaft relative to the supporting Journal of the matching shaft section is generally 0.01 ~ 0.03mm, and that of the high precision shaft (main shaft, etc.) is generally 0.001 ~ 0.005mm.
3. Dimensional accuracy: in order to determine the position of the shaft and the rod of the optical shaft for the supporting journal, why the accuracy of the optical shaft piston rod is required? Generally, the dimensional accuracy is very high (it5 ~ it7). The size accuracy of the journal for assembling the actuator is generally low (it6-it9).
Introduction of five kinds of linear optical axis piston rod
The types of linear optical shaft piston rod include ordinary linear optical shaft piston rod, chrome plated linear optical shaft piston rod, chrome plated linear flexible shaft, stainless steel linear shaft and chrome plated hollow shaft.
1. Ordinary straight-line optical axis piston rod (SF): the ordinary straight-line optical axis piston rod is opposite to the linear bearing point, so the surface hardness of ordinary straight-line optical axis piston rod is required to be high, and the material and heat treatment method are very important. Material: SUJ2 (equivalent) national standard GCr15. Hardness: hrc602 hardening layer Shendu: 0.8-3mm surface roughness: ra0.10m-ra0.35m straightness: shaft od tolerance below 70m / 1000mm G6
2. Chromium plated linear optical shaft piston rod (SFC): the chromium plated linear optical shaft piston rod is a common straight line. Five kinds of shafts of the optical Xi'an linear optical shaft piston rod are chromium plated. The shafts suitable for the environment easy to rust and the harsh environment are widely used in the moving parts of industrial robots and automatic sliding systems. Material: SUJ2 (equivalent) national standard GCr15. Hardness: hrc602 hardening layer Shendu: 0.8-3mm surface roughness: ra0.10m-ra0.35m straightness: under 70m / 1000mm chromium plating layer thickness: 3m-5m. Shaft outer diameter tolerance G6
3. Chrome plated linear flexible shaft (rsfc): the chrome plated linear flexible shaft has a thick chrome coating, so it can be directly used for the fitting of Jingmi piston rod and self-lubricating bearing. Its hardness is relatively moderate, so it has been applied in many fields. Material: 45 × 40Cr or 2Cr13 hardness: hb220-260 hardening layer Shendu: 0.8-3mm straightness: less than 0.15mm/1000mm chromium plating layer thickness: 0.02-0.05mm4 stainless steel straight shaft: stainless steel straight shaft has high corrosion resistance, high strength and wear resistance, and maintains its gaoxiao operation performance. Therefore, it can be used in water, chemicals, steam, seawater and so on. Material: sus404c, SUS304 hardness: hrc602 hardening layer Shendu: 0.8-3mm surface roughness: ra0.10m-ra0.35m straightness: under 70m / 1000mm chromium plating layer thickness: 3m-5m, shaft outer diameter tolerance G6
5. Chrome plated hollow shaft: due to the characteristics of hollow structure, chrome plated hollow shaft can greatly reduce the weight of hollow shaft, simplify the structure, and its internal can be compressed by measuring wire air, adding lubricating oil or used for mechanical arm.