High-precision inner hole turning device and method for long pipe blank

• Main Author: HUANG QUANLONG
• Format: Patent
• Language: Chinese; English
• Published: 17.03.2020
• Subjects: BORING; MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; PERFORMING OPERATIONS; TRANSPORTING; TURNING

The invention discloses a high-precision inner hole turning device and method for a long pipe blank. The high-precision inner hole turning device is characterized in that the front end of an elastic clamp body is of an end face grooving elastic swelling clamp structure with an outer cone, an outer thread is arranged at the rear end, a rolling limiting device is arranged at the area of a middle guide cylinder, and the outer cone, the outer thread and an elastic swelling clamp inner hole are coaxial with an outer circle of the guide cylinder. A rolling supporting block is of a ring-shaped innercone structure, a rolling limiting device is arranged in the rolling supporting block, an inner cone, the outer circle and an inner hole are coaxial, and the inner hole is movably connected with the guide cylinder in a clearance fitting manner and limited by the rolling limiting device. Three or more axial thread through holes are uniformly formed in the end face of a nut. The rolling supporting block is located at the fr