Cooling water jacket based on laminated plate structure and electric spindle

A cooling water jacket, plate structure technology, applied in maintenance and safety accessories, large fixed members, metal processing machinery parts, etc., can solve problems such as high heat flux density, difficulty in meeting high heat flux density heat dissipation requirements, and increased motor stator heat generation. , to achieve the effect of improving heat transfer coefficient, rapid cooling, and improving machining accuracy

Active Publication Date: 2020-07-17
XIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the continuous increase of the speed of the electric spindle and the continuous improvement of the machining accuracy requirements of the CNC machine tool, the heat generated by the motor stator rises sharply, and its heat flux density is very high. It is difficult to meet the modern The development of high-speed precision CNC machining technology brings high heat flux density cooling requirements, so it is necessary to find a more effective cooling method to solve the cooling problem of the electric spindle

Method used

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  • Cooling water jacket based on laminated plate structure and electric spindle
  • Cooling water jacket based on laminated plate structure and electric spindle
  • Cooling water jacket based on laminated plate structure and electric spindle

Examples

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Effect test

Embodiment 1

[0035] The embodiment of the present invention discloses a cooling water jacket based on laminate structure, the structure is as follows figure 1 and figure 2 As shown, it includes a water jacket body, one end of the water jacket body is provided with a front end cover 5, and the other end of the water jacket body is provided with a rear end cover 10, and the water jacket body includes a target ring 66, an impact ring 64 and The outer ring 61 of the water jacket and the impact ring 64 are provided with several groups of impact through holes 63 along the thickness direction, an annular jet chamber is formed between the impact ring 64 and the target ring 66, and an annular jet chamber is formed between the impact ring 64 and the outer ring 61 of the water jacket. Pressure chamber. The height of the annular jet chamber and / or the pressure-stabilizing chamber is 1mm-5mm. The coolant enters the surface of the target ring 66 through the array of impact holes 63 to form impact coo...

Embodiment 2

[0044] The invention also discloses an electric spindle, the structure of which is as follows: image 3 As shown, it includes a mandrel 1 , a rotor 8 , a stator 7 , a cooling water jacket 6 and a housing 9 that are tightly fitted in sequence from the inside to the outside. The cooling water jacket 6 is a cooling water jacket based on a laminate structure.

[0045] There are front bearings 2 and rear bearings 13 at the front and back of the mandrel 1, respectively, for supporting the mandrel 1; the rotor 8 is placed on the mandrel 1, and the stator 7 is placed on the outside of the rotor 8 with a certain gap between it and the rotor 8. The cooling water jacket 6 based on the laminate cooling structure is fixed on the outside of the stator 7 .

[0046] The rotor 8 is in interference fit with the mandrel 1 to output torque; there is a certain gap between the rotor 8 and the stator 7 so that they can rotate relative to each other. The outside of the stator 7 is in interference fi...

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Abstract

The invention discloses a cooling water jacket based on a laminated plate structure. The cooling water jacket comprises a water jacket body. A front end cover is arranged at one end of the water jacket body, and a rear end cover is arranged at the other end of the water jacket body. The water jacket body comprises a target ring, an impact ring and a water jacket outer ring which are sequentially connected in a sleeving mode from inside to outside. A plurality of sets of impact through holes are formed in the thickness direction of the impact ring. A ring-shaped jet flow chamber is formed between the impact ring and the target ring. A stable pressure cavity is formed between the impact ring and the water jacket outer ring. The invention further discloses an electric spindle. The electric spindle comprises the cooling water jacket based on the laminated plate structure. By adoption of the cooling water jacket, cooling liquid enters the target ring through the arrayed impact through holes, so that jet flow impact cooling is formed; and then forced-convection heat transfer is conducted inside the structure. Due to the existence of turbulent flow pillars, the heat transfer area and heattransfer coefficient are increased, the cooling problem of the electric spindle can be effectively solved, and thus machining precision of the machine tool electric spindle is improved.

Description

technical field [0001] The invention relates to the technical field of electric spindle cooling, in particular to a cooling water jacket and an electric spindle based on a laminate structure. Background technique [0002] The electric spindle has the advantages of compact structure, light weight, high efficiency and good dynamic characteristics. As a key functional component of high-speed precision CNC machine tools, it is widely used in the fields of automobiles, aerospace, military, electronics and automation. However, since the electric spindle integrates the motor inside the narrow and closed spindle unit, when the electric spindle rotates at high speed, the built-in motor, especially at the stator, will generate and accumulate a lot of heat. If the heat cannot be effectively released, it will cause many problems such as the axial thermal expansion of the spindle, the failure of the lubricating oil in the bearing, and even the burnout of the motor, which will seriously a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23Q11/12B23B19/02
CPCB23Q1/70B23Q11/127
Inventor 税琳棋焦宇琳高峰李艳吴文武王豆
Owner XIAN UNIV OF TECH
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