High-stability air flotation electric spindle
A high-stability, motorized spindle technology, applied in the direction of large fixed members, metal processing machinery parts, maintenance and safety accessories, etc., can solve problems such as insufficient contact, small contact surface of the spindle, and unstable positioning, etc., to reduce deflection Phenomenon, promote sufficient flow, effective cooling effect
Pending Publication Date: 2017-09-26
东莞市科隆实业有限公司
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Problems solved by technology
Since the electric spindle needs a lot of friction to generate heat during operation, its cooling has become one of the key problems to be solved. The use of existing coolants has a small contact surface with the spindle, and the fluidity of the coolant cannot be guaranteed. At the same time, the axis The front and rear bearings are required for positioning, but the positioning is still not stable enough, and there will be insufficient contact when it is matched with the coolant, causing the coil of the electric spindle to generate a large amount of heat during operation and cannot be evacuated. The effect of the coil on heat dissipation remains to be seen. improve
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[0025] The present invention will be further described below in conjunction with accompanying drawing:
[0026] The directional terms mentioned in the following embodiments, such as "up, down, left, right" are only referring to the directions of the drawings, therefore, the directional terms are used for illustration and not for limiting the present invention.
[0027] Such as Figure 1-8 As shown, the high-stability air-floating electric spindle includes a motor casing 1, a spindle body 2, a stator 3 and a shaft core 4 from outside to inside in sequence, and the tail of the shaft core is connected to the motor assembly 5; The multi-section bearing arranged between the core and the main shaft body 2, the bearing includes a push bearing 6 arranged at the shaft head 41 at the front end of the shaft core 4, and a push bearing 6 arranged between the rear end of the shaft core 4 and the stator 3 The rear bearing 8 and the middle bearing 7 arranged between the front part of the sha...
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The invention provides a high-stability air flotation electric spindle. The high-stability air flotation electric spindle sequentially comprises a motor shell, a spindle body, a stator and a spindle core from outside to inside. The tail of the spindle core is connected with a motor assembly. Multiple joints of bearings are arranged between the spindle core and the spindle body. The bearings comprise the push bearing arranged at the spindle head of the front end of the spindle core, the rear bearing arranged between the rear end of the spindle core and the stator and the middle bearing arranged between the front middle portion of the spindle core and the stator. The middle bearing comprises a front portion and a rear portion. A cooling through groove and cooling liquid circulation holes communicating with the bearings are formed in the surface of the spindle body. A main air path is further arranged in the spindle body. The multiple joints of bearings are provided with air path ring grooves communicating with the main air path. According to the high-stability air flotation electric spindle, the push bearing, the rear bearing and the middle bearing are designed on the spindle body, the middle bearing can effectively cooperate with the bearings in front of and behind the middle bearing in the spindle core rotating process, and rotating of a rotary shaft is more stable. Cooling liquid passes through the cooling through groove to cooperate with multiple air paths, and the high-stability air flotation electric spindle has the obvious slow-down function on reducing coil heating.
Description
technical field [0001] The invention relates to the field of motor shafts, in particular to a stable electric spindle structure. Background technique [0002] With the rapid development and improvement of electric drive technology (frequency conversion speed regulation technology, motor vector control technology, etc.), the mechanical structure of the main drive system of high-speed CNC machine tools has been greatly simplified, and the pulley drive and gear drive have been basically eliminated. . The main shaft of the machine tool is directly driven by the built-in motor, so that the length of the main transmission chain of the machine tool is shortened to zero, and the "zero transmission" of the machine tool is realized. This type of transmission structure in which the spindle motor and the machine tool spindle are "integrated into one" makes the spindle components relatively independent from the transmission system and the overall structure of the machine tool, so it can...
Claims
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Login to View More IPC IPC(8): B23B19/02B23Q11/12
CPCB23Q1/70B23Q11/127
Inventor 陈文泉
Owner 东莞市科隆实业有限公司