The electric main shaft that a kind of water or water smoke are lubricated
Technical field
The present invention relates to the electric main shaft in a kind of electromechanical engineering field, particularly be a kind of electric main shaft that makes water or water smoke as the bearing lubrication mode.
Background technology
The electricity main shaft is with dress, realization main shaft---the functional part of motor integration in the spindle motor, is widely used in the main frames such as Metal Cutting Machine Tool, supercentrifuge, high speed experimental machine.
Lubricated the lubricated of main shaft bearing that mainly be meant of electricity main shaft mainly contains grease lubrication, fog lubrication and oil-air lubrication etc. at present.But, all need grease, wet goods as lubricant medium in these lubricating systems, not only cost height, and lubricant medium leaks and can produce certain pollution to environment, is unfavorable for environmental protection, has also limited applying of electric main shaft.And the lubricated electric main shaft of water or water smoke with water as lubricant medium, not only cost is low, and water does not produce pollution to external environment condition.
Therefore need a kind of novel electric main shaft of exploitation, the lubricating system of its main shaft bearing is that water or water smoke are lubricated, even water is as lubricant medium.Water replaces grease or oil to make lubricant medium; Not only can practice thrift a large amount of oil plants; Can also avoid with grease or oil is the lubricant medium pollution on the environment, and can be applied to environment is had the industry such as food, medicine, material of specific (special) requirements, has expanded the range of application of electric main shaft.
Summary of the invention
The objective of the invention is to solve the drawback of lubricant medium contaminated environment in the lubricating systems such as existing various common electrical main shaft greases, mist of oil, oil gas; And provide that a kind of cost is low, the water of environmentally safe is as the water or the lubricated electric main shaft of water smoke of lubricant medium; When realization is carried out effectively lubricating to electric mainshaft bearing; Minimizing is to the pollution of environment, makes electric main shaft can be adapted to environment is had the industry such as food, medicine, material of specific (special) requirements.
To achieve these goals, technical scheme of the present invention is: the electric main shaft that a kind of water or water smoke are lubricated, and it comprises electric main shaft shell, is arranged on electric main shaft shell interior rotating shaft, motor stator and is arranged on rotor and the bearing assembly in the rotating shaft; It is characterized in that; On said electric main shaft shell and bearing pedestal, have the water or the water smoke that make lubricant medium and get into the inner lubricant medium passage of realizing bearing lubrication of main shaft bearing; On electric main shaft shell, be provided with cooling chamber, on electric main shaft shell, also be provided with the cooling duct that is used to feed the cooling of the internal dress of cooling fluid realization motor stator near inner electric machine stator position.
Further, said bearing pedestal comprises front-end bearing pedestal that is installed in electric main shaft shell front end and the rear bearing block that is arranged on electric rear-end of spindle, on described forward and backward bearing pedestal, all makes the lubricant medium passage.
Further, said end cap comprises the front end housing that is arranged on the front-end bearing pedestal and is arranged on the rear end cap on the rear bearing block, on described rear end cap, has the lubricant medium passage.
Further; The O RunddichtringO of seal sleeve also being installed between said motor stator and rotor and being arranged on the seal sleeve end; Through between the stator of electric main shaft inner electric machine and rotor, adding the mode that seal sleeve and O RunddichtringO are installed; Realize the internally sealing of dress motor stator, prevent to get into the inner electric machine stator winding and reduce its insulation property, guarantee the working condition that it is normal and safe as the water or the water smoke of lubricant medium.
The present invention has beneficial effect compared with prior art:
The present invention as lubricant medium, has changed the common electrical main shaft with grease or oily conventional lubrication mode as lubricant medium with water; Not only help economizing on resources, reducing cost, and environment is not produced pollution, meet requirement on environmental protection; And it is applied widely, is particularly suitable for environment is had the use of the industry such as food, medicine, material of specific (special) requirements.
Description of drawings
Specify the present invention below in conjunction with accompanying drawing and embodiment;
Fig. 1 is the structural representation of one embodiment of the invention.
Embodiment
For technological means, creation characteristic that the present invention is realized, reach purpose and effect and be easy to understand and understand, below in conjunction with embodiment, further set forth the present invention.
Embodiment:
Referring to Fig. 1, the electric main shaft that a kind of water of the present invention or water smoke are lubricated, it comprises electric main shaft shell 11, be arranged in the electric main shaft shell 11 rotating shaft 1, motor stators 10 and be arranged on rotor 9 and the bearing assembly in the rotating shaft 1; This bearing assembly comprises fore bearing assembly 4,6 and rear bearing assembly 14,16, and front and back nut 2,18 is realized fore bearing assembly 4 and 6, rear bearing assembly 14,16 are carried out fixing and locking.On said electric main shaft shell 11 and bearing pedestal, have the water that makes lubricant medium or water smoke and get into the inner lubricant medium passage of realizing bearing lubrication 20 of main shaft bearing, water or the water smoke used as bearing lubrication through the lubrication channel supply; Between inner electric machine rotor 9 and motor stator 10, add the O RunddichtringO 7,13 of seal sleeve 8 being installed and being arranged on the seal sleeve end; Realize the internally sealing and the protective effect of dress motor stator 10, avoid getting into electric main shaft inner electric machine stator 10 as the water or the water smoke of lubricant medium; And then reduce the inner electric machine stator winding insulation even burn out the problem of inner electric machine stator winding, guarantee the working condition that it is normal and safe.
Other include with inner electric machine rotor 9 collection for the rotating shaft 1 of one with to collect with electric main shaft housing 11 be parts such as the inner electric machine stator 10 of one, front-end bearing pedestal 3, rear bearing block 17, bonnet 19, fore bearing spacer ring 5, rear bearing spacer ring 15; Near inner electric machine stator 10 positions cooling chamber is arranged on the electricity main shaft shell 11, on electric main shaft shell 11, also have cooling duct 12, this cooling duct 12 is communicated with cooling chamber, is used for logical cooling fluid and realizes the stator of inner electric machine is cooled off.
In the utility model; Bearing pedestal comprises front-end bearing pedestal 3 that is installed in electric main shaft shell front end and the rear bearing block 17 that is arranged on electric rear-end of spindle; On described forward and backward bearing pedestal 3,17, all make lubricant medium passage 20, this lubricant medium passage 20 is connected with the lubricant medium passage of electric main shaft shell; On front-end bearing pedestal 3, front end housing is installed, rear end cap 19 is installed on the rear bearing block 17, cover at front and back ends and be separately installed with forward and backward hermetically-sealed construction 2,18, play sealing function.On described rear end cap 19, have lubricant medium passage 20; Lubricant medium passage on the rear bearing block 17 of these lubricant medium passage 20 connection front ends; Water or the water smoke used as bearing lubrication through 20 supplies of lubricant medium passage enter into main shaft bearing inside, are used for realizing bearing lubrication.
The present invention is at electric main shaft set inside lubricant medium passage 20, makes water or water smoke can directly arrive bearing inside bearing is lubricated; Through between the motor stator 10 of electric main shaft inner electric machine and rotor 9, adding seal sleeve 8 and O RunddichtringO 7,13 are installed; Realize the internally sealing of dress motor stator 10; Prevent to get into the inner electric machine stator winding and reduce its insulation property, guarantee the working condition that it is normal and safe as the water or the water smoke of lubricant medium.The electricity main shaft with inner electric machine rotor drive rotating shaft 1 rotation of rotating shaft 1 collection for one, is sent water or water smoke into inner the lubricated of bearing of realizing of bearing by the outside through lubricant medium passage 20 when work.
More than show and described basic principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; The present invention is not restricted to the described embodiments; That describes in the foregoing description and the specification just explains principle of the present invention; Under the prerequisite that does not break away from spirit and scope of the invention, the present invention also has various changes and modifications, and these variations and improvement all fall in the scope of the invention that requires protection.The present invention requires protection range to be defined by appending claims and equivalent thereof.