Machine tool spindle planetary gear transmission device
A technology of machine tool spindle and speed change device, applied in the direction of gear transmission device, drive device, transmission device, etc., can solve the problems such as the inability to achieve high speed of the machine tool spindle and the large torque output of the machine tool spindle, and achieve a simple structure and a wide range of applications. Effect
Active Publication Date: 2015-11-25
LINYI JINXING MACHINE TOOL
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Problems solved by technology
However, due to the weakness of low-speed and constant torque in the speed-regulating motor, if there is no gear transmission mechanism, the wide-range speed regulation of the motor alone cannot achieve the high-torque output requirements of the machine tool spindle at low speed. If the traditional machine tool spindle is used Gear transmission device, even if a wide-range speed-adjusting motor is used, it is impossible to achieve high speed of the machine tool spindle
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[0016] Such as figure 1 , 2 As shown, the planet carrier 2, the gear sleeve 3, the sun gear 4, the planet gear 6 and the shaft 7 form a planetary gear system, which is characterized in that the sun gear 4 is placed in the center, and the tail of the sun gear 4 is connected with the power input device of the machine tool; At least two planetary gears 6 are evenly distributed around the sun gear 4. The planetary gears 6 are installed on the planet carrier 2 through the shaft 7. The planetary gears 6 are meshed with the sun gear 4, and the planetary gears 6 are also meshed with the gear sleeve 3. The planetary gears The wheel 6 can rotate on its own, and the planetary wheel 6 can also revolve around the axis of the planetary carrier 2; the planetary carrier 2 is connected with the main shaft 1 of the machine tool, and one end of the planetary carrier 2 is provided with end teeth; the box body 5 is fixed on the body of the machine tool, and the box body The body 5 is provided wit...
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Disclosed is a planetary speed changing device for a machine tool spindle. When a sun gear, a planetary gear, a planetary carrier and a gear sleeve are relatively fixed, engagement of the gears is free of relative movement, the gears have no noise, and the speed ratio of the planetary speed changing device is 1:1 at the moment, so that the requirement of the machine tool spindle on high-speed operation is met. When the sun gear, the planetary gear, the planetary carrier and the gear sleeve form a planetary gear reduction gear train, torque is increased by means of speed reduction, so that the requirement of the machine tool spindle on low-speed high-torque output is met. The planetary speed changing device for the machine tool spindle is simple in structure and wide in application.
Description
technical field [0001] The invention relates to a machine tool spindle, in particular to a planetary gear speed change device for the machine tool spindle. Background technique [0002] For machine tool spindles, in addition to requiring high precision and high rigidity, most machine tool spindles also require high speed, wide speed range and high torque output at low speed. The spindle structure of traditional machine tools is transformed through multi-stage gears to achieve a wide speed range and low-speed high-torque output. Due to the limitation of the linear speed of the gears, the problem of high spindle speed has not been solved for a long time. At present, with the emergence of wide-range speed-regulating motors, gearless machine tools and CNC machine tools have been developed rapidly, and the wide speed range and high speed of the machine tool spindle are no longer a problem. However, due to the weakness of low-speed and constant torque in the speed-regulating moto...
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IPC IPC(8): B23Q5/12B23B19/02F16H1/28F16H37/00
Inventor 党金行
Owner LINYI JINXING MACHINE TOOL