Machine tool, tool assembly and tool holder of machine tool

Abstract

The invention relates to a machine tool, a tool assembly and a tool holder of the machine tool. The machine tool comprises a machine tool main body, a main shaft and a supporting unit, and the tool assembly is arranged between the machine tool main body and the supporting unit; and the tool assembly comprises a tool and the tool holder, the tool holder comprises a center shaft, a tool disc is arranged on the center shaft, the tool is mounted on the tool disc, and the two ends of the center shaft are connected with the main shaft and the supporting unit correspondingly; and receding spaces foraccommodating a workpiece when the workpiece and the tool disc conduct relative movement along the axial direction of the center shaft are formed between the tool disc and the main shaft connecting end as well as the tool disc and the supporting connecting end, the machine tool further comprises a worktable, and the worktable and the tool disc can move relatively along the axial direction of the center shaft. When the diameter of a flange is large, the worktable can drive the workpiece and the center shaft to move axially along the axial direction of the center shaft. The workpiece moves between the receding space between the tool disc and the main shaft connecting end as well as the receding space between the tool disc and the supporting connecting end, and the shape required by the end face of the workpiece can be machined at one time without turning the workpiece.

Description

Technical field [0001] The invention relates to a machine tool and its tool assembly and its tool holder. Background technique [0002] High-voltage enclosed combined electrical appliances are commonly used electrical equipment in current substations. All equipment such as circuit breakers, isolating switches, and transformers are enclosed in a metal grounded shell, which has the advantages of compact structure, small footprint, and convenient installation. It is usually necessary to install a flange on the shell of a high-voltage enclosed combined electrical appliance to install a conductor support, an adsorbent and an explosion-proof cover on the flange. Since the shell of the high-voltage enclosed combined electrical appliance is usually curved, the end face of the flange for welding with the shell is generally a saddle-shaped curved surface. [0003] Nowadays, the saddle-shaped end face of the flange is usually processed by a rod milling cutter. When the diameter of the flange...

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Problems solved by technology

[0003] Nowadays, the saddle-shaped end face of the flange is usually processed by a rod milling cutter. When the diameter of the flange is large (over 400mm), the axial length of the general rod milling cutter is 300~400mm. At this time, the axial length of the rod milling cutter The length cannot process the two curved surfaces of the saddle-shaped end face of the flange at one time, only one of the curved surfaces of the saddle-shaped end face of the flange can be processed by the rod milling cutter, and the efficiency is low

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