Deep within the sphere processing technology
Materials 1Cr18Ni9Ti, welded structure. Workpiece material strength is not very high, but the ductility and toughness, machinability poor hardening trend strong, cutting load, poor thermal conductivity, machining heat easy to focus on the cutting edge, BUE, the tool wear and tear. The main difficulty is that the workpiece machining high precision, thin-walled, rigid poor, prone clamping deformation. Workpiece hole depth and is a blind hole, the bottom of the hole is spherical, Arbor slender, easy to produce vibration when turning. Processing quality assurance is not easy.

Process Analysis

The original piece is in CNC lathe, finishing requires a complete bore and turning inside the sphere, and in the process does not allow the tool change. According to the characteristics of CNC machine tools, Arbor diameter can do f60mm. Because Arbor slender, less rigid, low intensity, in the processing of large arbor vibration generating let knife phenomenon, and the hole wall roughness value increases, not only low productivity, and processing quality is difficult to guarantee.

If the arbor diameter is increased, then the processing of the hole, and the hole wall Arbor gap is too small, causing poor chip, causing blockage, coolant into the difficult, tool wear and tear, thus affecting the machining accuracy. To meet the needs of production, so that the workpiece machining quality remained stable, increase productivity, solve the problem of CNC lathe deep hole, designed a spherical turning deep inside special tools, the lathe can be deep within the sphere of processing.