Electric spindle of high-speed precision numerical control machine tool
A technology of precision numerical control and electric spindle, which is applied in the direction of metal processing machinery parts, metal processing equipment, maintenance and safety accessories, etc., and can solve problems such as unsatisfactory, insufficient motor characteristic coefficients, and stoppages
Pending Publication Date: 2022-05-13
湖北一丰科技有限公司
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Problems solved by technology
After nearly two decades of development, domestic electric spindles have been continuously explored in practice. According to the machine tool type spectrum, there have been clear classifications, but they still remain in the supporting application of popular and mid-range lathes. A certain distance has been formed. In the high-end field, it still relies on imported machine tools for supplementation. The main problems are high precision, poor stability, insufficient motor characteristic coefficient, insufficient rigidity, and high failure rate, which cannot meet high-speed, high-precision, and high-efficiency numerical control. Standards required by machine tool users in the market
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Embodiment Construction
[0022] Below are specific embodiments of the present invention and in conjunction with accompanying drawing, technical scheme of the present invention is described further, but the present invention is not limited to these embodiments.
[0023] Such as figure 1 , figure 2 and image 3 As shown, it includes a main shaft case 1, a main shaft sleeve 2, a main shaft 3, a mandrel 4, an adapter 5, a collet 6 and a compression spring 7, and the inner wall of the main shaft sleeve 2 and the outer wall of the main shaft 3 are respectively provided with a stator 8 and a rotor 9 , the main shaft 3 and the main shaft sleeve 2 are connected by several sets of precision angular contact bearings, the inner end of the ejector rod 4 is pressed against the adapter 5, the collet 6 is slidably connected in the adapter 5, and the compression spring 7 is pressed against the adapter 5 and the chuck 6, the outer end of the ejector rod 4 is provided with a thrust mechanism that drives the ejector r...
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Abstract
The invention provides an electric spindle of a high-speed precise numerical control machine tool, and belongs to the technical field of metal cutting machining. Comprising a spindle box, a spindle sleeve, a spindle, an ejector rod, an adapter, a chuck and a compression spring, a stator and a rotor are arranged on the inner wall of the spindle sleeve and the outer wall of the spindle respectively, the spindle and the spindle sleeve are connected through a plurality of precise angular contact bearings, the inner end of the ejector rod abuts against the adapter, and the chuck is slidably connected into the adapter. The compression spring is pressed between the adapter and the chuck, and a thrust mechanism for driving the ejector rod to slide in the main shaft is arranged at the outer end of the ejector rod; the rotor and the stator form a low-current direct-drive permanent magnet synchronous motor, and a temperature sensor probe is arranged in the stator; a spiral liquid cooling through groove is formed between the spindle box and the spindle sleeve, and the two ends of the liquid cooling through groove are externally connected with a liquid pump and stored liquid respectively to form liquid cooling circulation. The invention has the advantages of high speed, high precision, constant temperature work and the like.
Description
technical field [0001] The invention belongs to the technical field of metal cutting and relates to an electric spindle of a high-speed precision numerical control machine tool. Background technique [0002] Advanced manufacturing is the foundation of a strong modern industry, and machine tools are the cornerstone leading the development of the manufacturing industry. The "mother of industry" CNC machine tool is the first choice for advanced processing equipment for modern machinery and equipment manufacturing. With the rapid development and mass production of domestic CNC machine tools in the past two decades , With the continuous advancement of technology and functions, its intelligence, type spectrum, type subdivision, precision level, and work efficiency are also continuously improved. However, despite the rapid development and popularization of domestic CNC machine tools, they are still hovering between economical and popular types, and there are very few high-precision...
Claims
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Patent Timeline
Login to View More IPC IPC(8): B23B19/02B23Q11/12
CPCB23Q1/70B23Q11/127
Inventor 蔡品水李宝剑张新华毛红亮
Owner 湖北一丰科技有限公司