A built-in central water outlet cylinder tool-changing electric spindle

Abstract

The invention discloses a tool-changing electrical spindle of a built-in central water outlet cylinder. The tool-changing cylinder assembly includes a cylinder top cover and a water source joint fixed on the cylinder top cover. The cylinder top cover is provided with a water flow channel, and the water source joint communicates with the water flow channel. The tool change cylinder assembly is fixedly connected to the housing, the central water outlet assembly is installed between the cylinder top cover and the housing, the two ends of the tie rod assembly are respectively connected to the central water outlet assembly and the sliding core assembly, the sliding core assembly is connected to the handle assembly, and the water source connector The incoming cooling water enters the central water outlet assembly through the water flow channel, and the cooling water flows through the central water outlet assembly, the tie rod assembly and the sliding core assembly in turn, enters the tool handle assembly and flows out from the tool handle assembly, and is sprayed onto the surface of the workpiece. With the built-in center water outlet structure, the length of the tie rod assembly is shortened by 30% compared with the existing main shaft tie rod assembly with center water outlet function, which greatly reduces the processing difficulty of the tie rod assembly, and the accuracy of the tie rod assembly is also guaranteed, thus avoiding the Effect on Spindle Performance.

Description

technical field [0001] The invention relates to an electric spindle, in particular to a built-in central water outlet cylinder tool changing electric spindle. Background technique [0002] Electric spindles are widely used in engraving and milling machines or machining centers for rigid tapping, deep hole processing, milling, drilling and other processing of non-ferrous metals, ferrous metals, glass, ceramics and other materials. When this type of spindle is milling workpieces at high speed, it will generate a lot of cutting heat, which will increase the loss of the tool, seriously affect the service life of the tool, and the machining accuracy will also be affected. When the spindle is processing some workpieces that are prone to dust particles at high speed, the particles generated on the surface of the workpiece will splash around and damage the mirror surface being processed, and some particles will enter the interior of the spindle, affecting the life of the spindle. T...

AI Technical Summary

Problems solved by technology

The disadvantage of using an externally installed rotary joint is that the overall length of the electric spindle is increased. The electric spindle is a product with a complex structure and extremely high requirements for machining accuracy and assembly accuracy of internal parts. Increasing the overall length of the electric spindle will increase the vibration, rigidity, and vibration of the spindle. Machining accuracy and other performance are seriously affected, and reliability is low

The water outlet function at the center of the spindle must rely on the rotary joint. The rotary joint is installed outside the main shaft. During the assembly, transportation and use of the electric spindle, it is very vulnerable to damage. The damage of the rotary joint will directly lead to the failure of the water outlet function at the center of the spindle.

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