CN209255852U - A kind of main shaft of numerical control machine tool and lathe - Google Patents
A kind of main shaft of numerical control machine tool and lathe Download PDFInfo
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- CN209255852U CN209255852U CN201821704539.5U CN201821704539U CN209255852U CN 209255852 U CN209255852 U CN 209255852U CN 201821704539 U CN201821704539 U CN 201821704539U CN 209255852 U CN209255852 U CN 209255852U
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- main shaft
- cooling
- shell
- inner casing
- bearing
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Abstract
It includes stator, bearing, inner casing and shell that the utility model embodiment, which provides a kind of main shaft of numerical control machine tool and lathe, the main shaft,；The shell is set on the inner casing outer wall；The inner casing is set on the bearing outer wall；The bearing is set on the stator outer wall；The stator, bearing, inner casing and shell coaxial arrangement；Cooling layer is provided between the shell and inner casing.It using main shaft described in the utility model, can timely be cooled down in long working to main shaft, prevent the excessive temperature generated by main shaft friction from leading to the deformation of main shaft inner body.
Description
Technical field
The utility model relates to digit ctrol machine tool fields, specifically, a kind of main shaft of numerical control machine tool and lathe.
Background technique
It is existing currently, every suit servo-system of traditional numerically-controlled machine tool can only realize one degree of freedom, and each freedom
It is the relationship to intercouple between degree, each servo-drive accurately coordinates the accurate fortune that machine tool motion component just may be implemented
Dynamic, cutter can just walk out scheduled track.But prolonged operation can make the main shaft of numerically-controlled machine tool lead to zero because of frictional heat
The dilatancy of part, and then lead to the variation of main shaft bearing contact stress.It will ultimately result in the track inaccuracy that cutter is walked out, very
Extremely main shaft is damaged.
In view of this, when how to reduce numerically-controlled machine tool long working main shaft temperature, be current problem to be solved.
Utility model content
In a first aspect, the utility model provides a kind of main shaft of numerical control machine tool, the main shaft include stator, bearing, inner casing and
Shell；
The shell is set on the inner casing outer wall；
The inner casing is set on the bearing outer wall；
The bearing is set on the stator outer wall；
The stator, bearing, inner casing and shell coaxial arrangement；
Cooling layer is provided between the shell and inner casing.
Optionally, the cooling layer is provided with the diversion trench moved for cooled liquid stream, and the diversion trench prolongs along the bearing
Direction Spiral distribution is stretched between the shell and inner casing.
Optionally, coolant inlet and cooling liquid outlet are provided on the outer shell outer wall；
The coolant inlet is connect with one end of the diversion trench, and the cooling liquid outlet and the diversion trench are far from institute
State the other end connection of coolant inlet.
Optionally, cooling tube is provided in the diversion trench, the cooling tube fitting is arranged in the diversion trench.
Optionally, the cooling tube is made by 65 manganese spring steels, and the cooling pipe surface is provided with layers of chrome.
Optionally, the stator center is provided with through-hole, and the through-hole and the stator are coaxially disposed, and the through-hole is used for
The cutter of the fixed main shaft of numerical control machine tool operation.
Optionally, the locating part of the through-hole being internally provided with for fixing the cutter, the locating part include setting
Set the limited block of the through-hole wall.
Optionally, the locating part includes the screw thread in the inner wall of the stator.
Optionally, the through-hole is circular through hole.
Second aspect, the utility model also provide a kind of lathe, including main shaft, cooling pump described in first aspect and cooling
Machine；
The cooling pump is connect by perfusion tube with the cooling layer, for recycling the coolant liquid in the cooling layer；
The cooler is connect with the cooling pump, for cooling down to coolant liquid.
Compared with prior art, beneficial effect provided by the utility model includes: that the utility model embodiment provides a kind of number
Machine tool chief axis is controlled, the main shaft includes stator, bearing, inner casing and shell；The shell is set on the inner casing outer wall；It is described
Inner casing is set on the bearing outer wall；The bearing is set on the stator outer wall；The stator, bearing, inner casing and outer
Shell coaxial arrangement；Cooling layer is provided between the shell and inner casing.It, can be when long using main shaft described in the utility model
Between operation when timely cooled down to main shaft, the excessive temperature generated that prevents from rubbing because of main shaft leads to the change of main shaft inner body
Shape.And then can guarantee the accuracy when numerically-controlled machine tool carries out operation, user can also be promoted in the safety for carrying out operation.
Detailed description of the invention
It, below will be to use required in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment
Attached drawing be briefly described.It should be appreciated that the following drawings illustrates only some embodiments of the utility model, therefore should not be by
Regard the restriction to range as.For those of ordinary skill in the art, without creative efforts, may be used also
To obtain other relevant attached drawings according to these attached drawings.
Fig. 1 is the cross-sectional structure schematic diagram of main shaft of numerical control machine tool provided by the embodiment of the utility model；
Fig. 2 is the vertical section structure schematic diagram of main shaft of numerical control machine tool provided by the embodiment of the utility model；
Fig. 3 is a kind of structural schematic diagram of stator provided by the embodiment of the utility model；
Fig. 4 is another structural schematic diagram of stator provided by the embodiment of the utility model.
Icon: 10- shell；20- cooling layer；30- inner casing；40- bearing；50- stator；201- cooling tube；501- through-hole；
502- limited block.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described.Obviously, it is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Usually here in attached drawing description and
The component of the utility model embodiment shown can be arranged and be designed with a variety of different configurations.
Therefore, requirement is not intended to limit to the detailed description of the embodiments of the present invention provided in the accompanying drawings below
The scope of the utility model of protection, but it is merely representative of the selected embodiment of the utility model.Based in the utility model
Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, all
Belong to the range of the utility model protection.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
In the description of the present invention, it should be understood that term " on ", "lower", "inner", "outside", "left", "right" etc.
The orientation or positional relationship of instruction be based on the orientation or positional relationship shown in the drawings or the utility model product use when
The orientation or positional relationship that the orientation or positional relationship or those skilled in the art usually put usually understand, be only for
Convenient for description the utility model and simplify description, rather than the equipment of indication or suggestion meaning or element must have specifically
Orientation is constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.
In addition, term " first ", " second " etc. are only used for distinguishing description, it is not understood to indicate or imply relatively important
Property.
In the description of the present invention, it should also be noted that, unless otherwise clearly defined and limited, " setting ",
Terms such as " connections " shall be understood in a broad sense, for example, " connection " may be a fixed connection, may be a detachable connection, or one
Ground connection；It can be mechanical connection, be also possible to be electrically connected；Can be and be directly connected to, can also by between intermediary in succession
It connects, can be the connection inside two elements.For the ordinary skill in the art, can understand as the case may be
The concrete meaning of above-mentioned term in the present invention.
With reference to the accompanying drawing, specific embodiment of the present utility model is described in detail.
Fig. 1 is please referred to, Fig. 1 is the cross-sectional structure schematic diagram of main shaft of numerical control machine tool provided by the embodiment of the utility model.
The utility model embodiment provides a kind of main shaft of numerical control machine tool, and the main shaft includes stator 50, bearing 40, inner casing 30 and shell
10。
The shell 10 is set on 30 outer wall of inner casing.
The inner casing 30 is set on 40 outer wall of bearing.
The bearing 40 is set on 50 outer wall of stator.
The stator 50, bearing 40, inner casing 30 and shell 10 are coaxially disposed.
Cooling layer 20 is provided between the shell 10 and inner casing 30.
In the present embodiment, the bearing 40 can be angular contact ball bearing 40.Angular contact ball bearing 40 can be held simultaneously
By radial load and axial load, purely axial load can also be born, axial load ability by contact angle (load position with
Angle between 40 sagittal plane of bearing) it determines, contact angle is bigger, and the ability for bearing axial load is also bigger.
The dress ball quantity of angular contact ball bearing 40 is most, thus load bearing capacity is maximum in ball bearing 40, and rigidity is also big,
And can be presetting, good manufacturability, the grade of tolerance is highest in ball bearing 40.
In the present embodiment, the main shaft of numerically-controlled machine tool can be using oil-air lubrication at regular time and quantity.Timing refers to every one section
The primary oil of time note, quantitatively refers to the oil mass that each lubricating oil can be accurately controlled by proportional valve.And oil-air lubrication can be with
It is lubricating oil under the carrying of compressed air, is blown into bearing 40.Fuel-flow control is particularly significant, and oil mass is very few not to have lubrication
Effect, and oil mass is too many, then frictional heat can be made to increase because of the resistance of oil when 40 high speed rotation of bearing.
In other embodiments, main shaft of numerical control machine tool can also be lubricated by the way of spray lubrication.
Referring to figure 2., Fig. 2 is the vertical section structure schematic diagram of main shaft of numerical control machine tool provided by the embodiment of the utility model,
The cooling layer 20 is provided with the diversion trench moved for cooled liquid stream, and the diversion trench is along the 40 extending direction spiral of bearing point
Cloth is between the shell 10 and inner casing 30.
Further, coolant inlet and cooling liquid outlet are provided on 10 outer wall of shell.
The coolant inlet is connect with one end of the diversion trench, and the cooling liquid outlet and the diversion trench are far from institute
State the other end connection of coolant inlet.
In the present embodiment, diversion trench along the 40 extending direction Spiral distribution of bearing the shell 10 and inner casing 30 it
Between.In other embodiments, the cooling layer 20 can penetrate through setting, and entire cooling layer 20 is used to accommodate coolant liquid, shell
Multiple through-holes 501 can be set on 10 outer walls, output and input coolant liquid for recycling.
Further, cooling tube 201 is provided in the diversion trench, the fitting of cooling tube 201 is arranged in the water conservancy diversion
In slot.
In the present embodiment, the cooling tube 201 for being fitted in diversion trench inner wall can be set in diversion trench, use cooling tube
201 can prevent cooling oil from penetrating into inside main shaft or leaking.
Further, the cooling tube 201 is made by 65 manganese spring steels, and 201 surface of cooling tube is provided with layers of chrome.
In the present embodiment, 201 main body of cooling tube can be made by 65 manganese spring steels, and chromium plating process is done on surface, is had
The glossiness of stainless steel, non-corrosive do not aoxidize.Liner is white plastic hose and sealed plastic part, and tube body can be arbitrarily bent.
Further, the stator 50 is provided centrally with through-hole 501, and the through-hole 501 is coaxially disposed with the stator 50,
The through-hole 501 is used to fix the cutter of the main shaft of numerical control machine tool operation.
Referring to figure 3., Fig. 3 is a kind of structural schematic diagram of stator 50 provided by the embodiment of the utility model, the through-hole
501 locating part being internally provided with for fixing the cutter, the locating part include the limit that 501 inner wall of through-hole is arranged
Position block 502.
In the present embodiment, the limited block 502 in through-hole 501 can be four, and the shape of 502 protrusion of limited block can be with
Cutter used as needed is configured.
In other embodiments, locating part can also be elastic component, and the elastic component is not when installing cutter in stretching, extension
State, when that will correspond to cutter and be placed into through-hole 501, elastic component is in compressive state, and the elastic component of compressive state can will
Cutter is fixed in through-hole 501.
Referring to figure 4., Fig. 4 is another structural schematic diagram of stator 50 provided by the embodiment of the utility model, in this reality
Apply in example, through-hole 501 can be shaped to it is rectangular, in other embodiments, can according to the shape of corresponding cutter, if
Set the shape of through-hole 501.In other embodiments, the shape of through-hole 501 can also be triangle.
In other embodiments, dismountable limited block 502 can also be set in the through-hole 501, it can be according to being made
With the specific size and shape of cutter, corresponding limited block 502 is installed in through-hole 501.
Further, in the present embodiment, the locating part includes the screw thread in the inner wall of the stator 50, can will be gathered around
Have with the Cutting tool installation manner of the matched screw thread of the screw thread of the inner wall of stator 50 up,
Further, the through-hole 501 is circular through hole 501.
In the present embodiment, the main shaft of the numerically-controlled machine tool can also include warning device, and the warning device includes passing
Sensor, alarm and indicator light.
The sensor is arranged near the shell 10 of the main shaft of numerical control machine tool, and the alarm and the sensor connect
It connects, the indicator light is arranged near the alarm.
Further, the sensor can be temperature sensor, when numerically-controlled machine tool is worked, with operation into
Row, main shaft temperature increase.
If cooling layer 20 works normally, the temperature of main shaft is lower than preset temperature at this time, and temperature sensor detects at this time
Temperature be it is normal, do not go out to trigger alarm and indicator light.
If cooling layer 20 breaks down or coolant liquid goes wrong, then with the progress of work, cooling effect is unknown
Aobvious, main shaft temperature can be more than preset temperature, and the temperature that temperature sensor detects at this time is exceeded temperature, and then can trigger alarm
Device issues alarm and triggers the flashing of indicator light.
In other embodiments, the sensor can also be range sensor.The range sensor is arranged described
Near the shell 10 of main shaft of numerical control machine tool, the alarm is connect with the sensor, and the indicator light is arranged in the alarm
Near device.
When carrying out operation using numerically-controlled machine tool, with the progress of operation, the position of main shaft of numerical control machine tool can be always
Advance, when proceeding to critical distance, it may occur that collision or main shaft are detached from.When main axle moving is apart within a preset range,
Range sensor will not trigger alarm and the indicator light of alarm device.
When user's operation main shaft operation, if not paying attention to the forward travel distance of main shaft, also in operation always, then leading at this time
Axis advance range can exceed preset range, and range sensor can trigger alarm and issue alarm and trigger the sudden strain of a muscle of indicator light
It is bright.
In other embodiments, the sensor can also be that moisture sensor, the moisture sensor are arranged described
Near the shell 10 of main shaft of numerical control machine tool, the alarm is connect with the sensor, and the indicator light is arranged in the alarm
Near device.
When user carries out operation, coolant liquid and lubrication with the running of numerically-controlled machine tool and the rotation of main shaft, in main shaft
Liquid also will do it corresponding movement, if coolant liquid and lubricating fluid because spindle structure of numerical-control machine tool deformation causes leakage, can be to adding
The object or numerically-controlled machine tool itself of work are polluted or are damaged.
When user carries out operation using numerically-controlled machine tool, if spindle structure of numerical-control machine tool does not deform at this time, do not have cold
But liquid or lubricating fluid outflow, moisture sensor will not trigger alarm and the indicator light of alarm device at this time.
When the damage of the main shaft internal structure of numerically-controlled machine tool perhaps deforms, coolant liquid or lubricating fluid are overflowed from main shaft,
Moisture sensor can detect the phenomenon that leakage at this time, and then can trigger alarm and issue alarm and trigger indicator light
Flashing.
In other embodiments, the warning device is also provided with other sensors to cope with the hair of other problems
It is raw.
In other embodiments, the main shaft of numerical control machine tool can also include a gravity sensor, the gravity sensitive
Device can be set in 501 inner wall of through-hole.
When numerically-controlled machine tool carries out operation, main shaft is started turning, and according to the data that gravity sensor transmits, can pass through meter
Calculation machine obtains the revolving speed of main shaft rotation, can be accurately controlled the working condition of main shaft, extends Main Shaft Service Life.
In other embodiments, position sensor, the position sensor can also be arranged in the main shaft of the numerically-controlled machine tool
The surface of the main shaft is set, and 40 inner wall of bearing is provided with default test point, by continuously detecting the position sensing
Distance when device is by the default test point, it is possible to determine that whether the main shaft beats in operation, and according to measuring
Range data calculate runout error.
The utility model embodiment also provides a kind of lathe, including main shaft above-mentioned, cooling pump and cooler.
The cooling pump is connect by perfusion tube with the cooling layer 20, for recycling the cooling in the cooling layer 20.
Further, the cooler is connect with the cooling pump, for cooling down to coolant liquid.
In the present embodiment, cooler model can be HBO-3RPTSB-BY-10, and used lubricating oil can be ISO
VG32, cooling temperature control range are 10 DEG C -40 DEG C, and the cooling oil temperature difference controls ± 10 DEG C, initial temperature: 15 DEG C, pump flow:
60-73L/min, the pressure loss: 3.0kgf/cm2, cooling oil viscosity: 4-300Cst, entering and leaving tubing diameter isIt is cold
But ability: 7500/9000kcal/H.
In conclusion the utility model embodiment provides a kind of main shaft of numerical control machine tool, the main shaft include stator, bearing,
Inner casing and shell；The shell is set on the inner casing outer wall；The inner casing is set on the bearing outer wall；The bearing
It is set on the stator outer wall；The stator, bearing, inner casing and shell coaxial arrangement；It is arranged between the shell and inner casing
There is cooling layer.Using main shaft described in the utility model, it can timely be cooled down in long working to main shaft, be prevented
Because the excessive temperature that main shaft friction generates leads to the deformation of main shaft inner body.And then it can guarantee to carry out operation in numerically-controlled machine tool
When accuracy, can also be promoted user carry out operation safety.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (6)
1. a kind of main shaft of numerical control machine tool, which is characterized in that the main shaft includes stator, bearing, inner casing and shell；
The shell is set on the inner casing outer wall；
The inner casing is set on the bearing outer wall；
The bearing is set on the stator outer wall；
The stator, bearing, inner casing and shell coaxial arrangement；
Cooling layer is provided between the shell and inner casing；
The cooling layer is provided with the diversion trench moved for cooled liquid stream, and the diversion trench is along the bearing extending direction spiral point
Cloth is between the shell and inner casing；
Coolant inlet and cooling liquid outlet are provided on the outer shell outer wall；
The coolant inlet is connect with one end of the diversion trench, and the cooling liquid outlet is with the diversion trench far from described cold
But the other end connection of liquid entrance；
Cooling tube is provided in the diversion trench, the cooling tube fitting is arranged in the diversion trench；
The stator center is provided with through-hole, and the through-hole and the stator are coaxially disposed, and the through-hole is for fixing the number
Control the cutter of machine tool chief axis operation.
2. main shaft according to claim 1, which is characterized in that the cooling tube is made by 65 manganese spring steels, the cooling
Pipe surface is provided with layers of chrome.
3. main shaft according to claim 1, which is characterized in that the through-hole is internally provided with for fixing the cutter
Locating part, the locating part includes the limited block that the through-hole wall is arranged.
4. main shaft according to claim 3, which is characterized in that the locating part includes the spiral shell in the inner wall of the stator
Line.
5. main shaft according to claim 1, which is characterized in that the through-hole is circular through hole.
6. a kind of lathe, which is characterized in that including main shaft of any of claims 1-5, cooling pump and cooler；
The cooling pump is connect by perfusion tube with the cooling layer, for recycling the coolant liquid in the cooling layer；
The cooler is connect with the cooling pump, for cooling down to coolant liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821704539.5U CN209255852U (en) | 2018-10-19 | 2018-10-19 | A kind of main shaft of numerical control machine tool and lathe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821704539.5U CN209255852U (en) | 2018-10-19 | 2018-10-19 | A kind of main shaft of numerical control machine tool and lathe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209255852U true CN209255852U (en) | 2019-08-16 |
Family
ID=67558648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821704539.5U Active CN209255852U (en) | 2018-10-19 | 2018-10-19 | A kind of main shaft of numerical control machine tool and lathe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209255852U (en) |
-
2018
- 2018-10-19 CN CN201821704539.5U patent/CN209255852U/en active Active
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