Machine tool spindle production and processing technology

Spindle production and processing technology, the author of the spherical roller bearing, for you to share: the function and structure characteristics of axial parts: 1, use: support transmission parts ( The gear, pulley) , the load, the transmission torque, to ensure in the rotation accuracy of shaft parts. 2, type: 12, optical axis, hollow shaft, axle shaft, ladder shaft, spline shaft, cross shaft, eccentric shaft, crankshaft and camshaft. 3, structure features: inside and outside the cylinder, cone, end, step face, both inside and outside screw, spline, slotting, groove, horizontal hole, etc. 2, 1, machine tool spindle purpose: support parts, load bearing, transmission torque, is the core component of machine tool. 2, type: ( 1) Ordinary machine tools spindle ( 12 class machine tool) ； （ 2) Mechanical spindle ( Spindle unit) ； （ 3) Motorized spindle. Three, the technical requirements of shaft parts, materials and blank 1, technical requirements, with the bearing axis neck, transmission parts installed shaft head surface is one of the important surface of shaft, to put forward the important technical requirements, such as: (1) dimensional accuracy: Ф h5, Ф f7. (2) the shape precision of 0. 0025, cylindricity 0. 02 ↗（ Diameter jump) 0. 006 vertical degree 0. 01. The degree of symmetry ( Keyway) 0. 05. (3) the surface roughness Ra value of 0. 4µ 0 m roughness. 8. (4) heat treatment: four: conditioning ( Are fire) , partial quenching, carburizing, nitriding. Bearing manufacturer analysis: to measure the performance of spindle assembly indicators mainly rotation precision and rigidity and speed adaptability. (1) : rotating precision spindle rotates in influencing the direction of the machining accuracy in radial and axial runout, mainly depends on the main shaft and bearing manufacturing and assembly quality. (2) the dynamic and static stiffness: mainly depends on the bending stiffness of the spindle, the stiffness and damping of the bearing. (3) the speed adaptive: allows the highest speed and speed range, mainly depends on the structure and lubrication of the bearing, and the cooling conditions.