Condensate water control device of ram main shaft built-in water-cooled motor and condensate water control method of the ram main shaft built-in water-cooled motor
A water-cooled motor and control device technology, applied in the field of machine tools, can solve the problems of condensed water on the motor casing, low motor casing, affecting the life, accuracy and reliability of the machine tool.
Active Publication Date: 2013-04-10
WUHAN HEAVY MACHINE TOOL GRP
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Problems solved by technology
However, because the motor adopts the water circulation cooling method, the outer surface temperature of the motor casing is relatively low. When the temperature reaches the dew point temperature of the air vapor pressure inside the ram, the motor casing will produce condensed water.
The generation of condensed water will cause corrosion to the bearings and parts under the motor, which will affect the life, precision and reliability of the machine tool
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[0027] Next, the present invention is applied to the ram of a vertical lathe as an example, and the principle of condensate control of the built-in water-cooled motor of the main shaft of the ram is further described in the present invention.
[0028] Figure 1~4 Middle: 1. Dew point sensor; 2. Temperature sensor; 3. Water-cooled motor; 4. Ram; 5. Numerical control system; 6. Temperature control box; 7. Water outlet of temperature control box; 8. Water inlet of temperature control box ;9. Water inlet / outlet port of water-cooled motor; 10. Water temperature control signal input terminal of temperature control box; 11. Dew point sensor signal input terminal; 12. Temperature sensor signal input terminal; 13. Water temperature control signal output terminal; 14. Milling Main shaft; 15, transmission shaft; 16, gearbox.
[0029] figure 1 It is a traditional long transmission shaft ram structure. The main shaft 14 in the figure is arranged at the end of the ram 4, the elongated tr...
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The invention belongs to a condensate water control device of the ram main shaft built-in water-cooled motor and a condensate water control method of the ram main shaft built-in water-cooled motor, and is applicable to the field of the machine tool to stop the phenomenon or solve the problem that the outer surface of the water-cooled motor arranged inside a ram. According to the condensate water control device of the ram main shaft built-in water-cooled motor, a temperature sensor and a dew point sensor are installed on the surface of a main case of the water-cooled motor arranged inside the ram, and the temperature sensor and the dew point sensor are connected with a numerical control system; a water temperature control signal output end of the numerical control system is connected with a signal input end of a temperature control box; and instructions are sent to the temperature control box after a signal of the temperature sensor and a signal of the dew point sensor are operated and processed by the numerical control system, a motor cooling water temperature is controlled and corrected according to an instructed temperature of the numerical control system by the temperature control box, and the water-cooled motor is circularly cooled by the cooling water. The temperature on the surface of the main case of the water-cooled motor arranged inside the ram is enabled to be higher than the temperature of the dew point, and therefore the corrosion damage effects from the condensate water to machine tool parts and to machine tool electrical components are avoided.
Description
[0001] Field [0002] The device and method for controlling condensed water of a water-cooled motor built into a main shaft of a ram according to the present invention are particularly suitable for solving the phenomenon and problem of suppressing condensed water produced on the outer surface of a water-cooled motor inside a ram in the field of machine tools. Background technique [0003] Under the high-speed trend of the ram spindle of CNC machine tools, the traditional long drive shaft spindle structure in the prior art ( figure 1 ) Due to the complex transmission mechanism and low resonance frequency, it has been unable to meet the increasing demand of the spindle speed. Now the effective way to increase the spindle speed is to build the electric spindle or motor and gearbox into the ram and directly connect with the spindle ( figure 2 ) to replace the traditional long drive shaft structure. Since the ram has a built-in spindle motor, the working area of the motor is n...
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IPC IPC(8): G05D23/20G05B19/406
Inventor 赵明张文桥桂林薛敬宇袁利亚
Owner WUHAN HEAVY MACHINE TOOL GRP