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A high-speed air-floating electric spindle

An electric spindle and air bearing technology, which is used in large fixed members, metal processing machinery parts, maintenance and safety accessories, etc., can solve the problems of increased manufacturing costs, low cooling efficiency, complicated water channels, etc., and can reduce the temperature of the shaft core. , the effect of high cooling efficiency and simple structure

Active Publication Date: 2016-08-17
GUANGZHOU HAOZHI ELECTROMECHANICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the water cooling system used in the above patent cannot directly act on the rotating shaft and bearings, and its cooling efficiency is relatively low; moreover, the water channels in the water cooling system are complicated and difficult to process, thereby increasing the manufacturing cost

Method used

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  • A high-speed air-floating electric spindle
  • A high-speed air-floating electric spindle
  • A high-speed air-floating electric spindle

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Embodiment Construction

[0019] Below, in conjunction with accompanying drawing and specific embodiment, the present invention is further described:

[0020] see Figure 1 to Figure 4 , The present invention provides a high-speed air-floating electric spindle, a preferred embodiment of which includes a body 10 , a stator 21 , an upper air-bearing bearing 30 , a lower air-bearing bearing 40 , a shaft core 50 , a thrust bearing 60 and a fixed shaft 70 .

[0021] The stator 21 is fixed inside the body 10 , the upper air bearing 30 and the lower air bearing 40 are respectively fixed above and below the stator 21 , the thrust bearing 60 is located below the lower air bearing 40 , and the shaft core 50 is fixed with For the rotor 22 matched with the stator 21, the shaft core 50 is inserted into the axial through hole formed between the stator 21, the upper air bearing 30, the lower air bearing 40 and the thrust bearing 60. Specifically, the shaft 50 An annular support portion 51 protrudes outward from the ...

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Abstract

A high-speed air-bearing electric spindle comprises a body (10), a stator (21), an upper air-bearing bearing (30), a lower air-bearing bearing (40), a shaft core (50) and a fixed shaft (70). The body, the upper air-bearing bearing and the lower air-bearing bearing are provided with intercommunicated air channels to form an air film suspending the shaft core. A cooling water channel (71) is provided in the fixed shaft. A cooling gap communicating with the cooling water channel is provided between the outer surface of the fixed shaft and the inner surface of the shaft core. The top part of the cooling gap is closed and the lower part is open.

Description

technical field [0001] The invention relates to a precision machining spindle in a numerically controlled machine tool, in particular to a high-speed air-floating electric spindle. Background technique [0002] The air bearing spindle is a new type of sliding bearing mechanism that uses high-speed airflow to form a thin film of air between the shaft and the bearing, and uses it as a lubricant to achieve high-speed rotation of the shaft. The advantages of no pollution are more and more used in CNC machine tools to process various parts and components. In general, this kind of spindle has a very high speed and a long working time. Under such working conditions, the problem is that the machine heats up seriously, and it is easy to cause deformation of the rotating shaft and bearing, thereby affecting the machining accuracy and reducing the stability of the spindle. shorten its service life. For this reason, people have designed a spindle with a water cooling system. For examp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23B19/02B23Q11/12
CPCB23Q1/70B23Q11/1015B23Q11/127
Inventor 汤秀清
Owner GUANGZHOU HAOZHI ELECTROMECHANICAL