Tool for boring outer circle of large workpiece

Abstract

The invention aims to provide a tool capable of boring large workpieces and large outer diameters. The tool comprises a concentric machine tool spindle with the axis center located in the horizontal direction, the front end of the machine tool spindle is coaxially connected with a rotating shaft, the rotating shaft is in running fit with a rack, a chuck is arranged at the front end of the rotating shaft, and a boring cutter assembly is clamped on the chuck. According to the scheme, the rotating shaft and the chuck are directly and additionally arranged on the main shaft of the machine tool by utilizing the most common machine tool in production, the cost is low, the main shaft of the machine tool only needs to provide rotating torque and moving power without bearing the weight of a cutter bar and a cutter, and the torque and weight generated during machining are transmitted to the guide rail and the base through the shell and the bearing. The sizes of the rotating shaft and the chuck are set according to the magnitude of the borne cutting force, the bearing capacity is large, and a large outer circle can be bored.

Description

technical field [0001] The invention relates to the technical field of mechanical processing equipment, in particular to a tool for boring outer circles of large parts. Background technique [0002] A boring machine is a machine tool that mainly uses a boring tool to bore the existing prefabricated hole of the workpiece. Usually, the main movement of the boring tool is rotation, and the movement of the boring tool or the workpiece is the feed movement. It is mainly used for machining high-precision holes or completing one-time positioning. The finishing of multiple holes can also be engaged in the processing of other processing surfaces related to hole finishing (such as threads, outer circular surfaces and end surfaces). For ordinary boring machines, when machining the outer circle of large workpieces, on the one hand, the size of the original chuck on the machine tool is too small to adapt to the machining of the outer circle of large workpieces. If a large-sized chuck is ...

AI Technical Summary

Problems solved by technology

For a general boring machine, when machining the outer circle of a large workpiece, on the one hand, the size of the original chuck on the machine tool is too small to adapt to the machining of the outer circle of a large workpiece. If a large-sized chuck is directly added to the rotating shaft, Since the boring tool assembly on the chuck is eccentrically arranged relative to the rotating shaft and the eccentric distance is too large, and the force arm is too large, the bearing of the boring head cannot bear such a large cutting force at all, which may easily cause bearing crushing, Risk of shaft deformation

If the entire boring machine is processed very large, although it can meet the large cutting force generated during processing, it will also greatly increase the cost

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