CN210440548U - Reversible high-rigidity air turbine driving rotary shafting device - Google Patents
Reversible high-rigidity air turbine driving rotary shafting device Download PDFInfo
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- CN210440548U CN210440548U CN201921368078.3U CN201921368078U CN210440548U CN 210440548 U CN210440548 U CN 210440548U CN 201921368078 U CN201921368078 U CN 201921368078U CN 210440548 U CN210440548 U CN 210440548U
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Abstract
The utility model discloses a reversible high rigidity air turbine drive gyration shafting device adopts the gyration of air turbine drive pivot, the pivot is by upper and lower thrust plate location-mounting in air bearing, air bearing respectively with the pivot, go up the thrust board, down thrust plate clearance fit, air turbine integrated into one piece is in down on the circumference wall of thrust plate, including levogyration air turbine and dextrorotation air turbine, high-pressure gas drives respectively thereby levogyration air turbine, dextrorotation air turbine are rotatory drive pivot, go up the clockwise or anticlockwise gyration of thrust board. Through the mode, the utility model adopts full-gas lubrication and gas drive, avoids the adoption of a motor, can make the structure more compact while reducing the cost, and effectively reduces the volume and the motion quality of the whole motion shafting as the turbine and the lower thrust plate are integrated; meanwhile, the gas can cool the shafting, so that the temperature rise is further controlled, and the motion precision of the shafting is effectively improved.
Description
Technical Field
The utility model relates to an accurate digit control machine tool technical field especially relates to a reversible high rigidity air turbine drive gyration shafting device.
Background
The rotary shafting device is widely applied to a precise numerical control machine tool, and the performance of the rotary shafting device directly determines the machining precision of the numerical control machine tool. The rotary bearing adopted by the existing machine tool rotary shafting device is generally a mechanical bearing or a ceramic bearing, belongs to a contact bearing, inevitably generates friction with a rotary shaft substrate, and generates heat and abrasion in a high-speed rotation state; in addition, the existing rotary shaft system is mostly driven by a motor, so that the price is high, the coaxiality of the motor shaft and the rotary shaft is difficult to ensure, the dynamic performance of the rotary shaft is influenced, the rotary precision is reduced, and in addition, the high-speed rotation of the motor shaft can generate a large amount of heat, so that the thermal deformation of the shaft system is caused.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the main technical problem who solves provides a reversible high rigidity air turbine drive gyration shafting device, adopts full gas lubrication and gas drive, has effectively avoided wearing and tearing and the themogenesis that mechanical friction and motor drive lead to, can effectively improve the gyration precision of device to structural rigidity is high, and the bearing capacity is big.
In order to solve the technical problem, the utility model discloses a technical scheme be: the utility model provides a reversible high rigidity air turbine drive gyration shafting device adopts the gyration of air turbine drive pivot, the pivot by last thrust plate, lower thrust plate location mounting in air bearing, air bearing respectively with pivot, last thrust plate, lower thrust plate clearance fit, air turbine integrated into one piece is in down on the circumference wall of thrust plate, including levogyration air turbine and dextrorotation air turbine, high-pressure gas drives respectively thereby levogyration air turbine, dextrorotation air turbine are rotatory drive pivot, go up the clockwise or anticlockwise gyration of thrust plate.
In a preferred embodiment of the present invention, a first air inlet, a second air inlet and a first air outlet are disposed on the circumferential wall of the air bearing, the first air inlet and the second air inlet are used for receiving high-pressure air, so that the high-pressure air enters the inside of the air bearing and forms an air film at the gap fit between the air bearing and the rotating shaft, the upper stop push plate and the lower stop push plate, and the first air outlet is used for exhausting the high-pressure air inside the air bearing.
In a preferred embodiment of the present invention, a plurality of throttling grooves are disposed on the surface of the clearance fit between the air bearing and the rotating shaft, the throttling grooves being distributed along the axial direction of the air bearing.
In a preferred embodiment of the present invention, the throttling grooves are circumferentially and uniformly distributed on a hole wall of the middle mounting hole of the air bearing.
In a preferred embodiment of the present invention, the diameter of the first air inlet and the second air inlet is 0.1-1mm, the groove depth of the throttling groove is 0.01-0.1mm, and the groove width is 0.05-1 mm.
In a preferred embodiment of the present invention, the longitudinal section of the lower thrust plate is of an inverted "convex" shape, and includes an upper large circular platform and a lower small boss, and the small boss is embedded on the base.
In a preferred embodiment of the present invention, a third air inlet is disposed on the circumferential wall of the large circular truncated cone, a fourth air inlet and a second air outlet are disposed on the base, the third air inlet and the fourth air inlet are used for receiving high-pressure air, so that the high-pressure air enters the air turbine to drive the air turbine to rotate, and the second air outlet is used for discharging the high-pressure air inside the air turbine.
In a preferred embodiment of the present invention, the left-handed air turbine is integrally formed on the circumferential wall of the large circular truncated cone, the right-handed air turbine is integrally formed on the circumferential wall of the small boss, the air inlet three is communicated with the left-handed air turbine, and the air inlet four is communicated with the right-handed air turbine.
In a preferred embodiment of the present invention, the right-handed air turbine is integrally formed on the circumferential wall of the large circular truncated cone, the left-handed air turbine is integrally formed on the small circular circumferential wall of the small boss, the air inlet three is communicated with the right-handed air turbine, and the air inlet four is communicated with the left-handed air turbine.
In a preferred embodiment of the present invention, the second air outlet is provided with a plurality of air outlets, and the air outlets are uniformly distributed on the circumferential surface of the base, and the second air outlet is communicated with the left-handed air turbine and the right-handed air turbine.
The utility model has the advantages that: the utility model adopts full gas lubrication and gas drive, avoids the adoption of a motor, can make the structure more compact while reducing the cost, and effectively reduces the volume and the motion quality of the whole motion shafting by integrating the turbine and the lower thrust plate; in addition, the gas can cool the shafting, so that the temperature rise is further controlled, and the motion precision of the shafting can be effectively improved.
Drawings
Fig. 1 is a schematic perspective view of a preferred embodiment of the reversible high-rigidity air turbine driven rotary shafting device according to the present invention;
FIG. 2 is a front view of a preferred embodiment of the reversible high stiffness air turbine driven rotary shafting apparatus of the present invention;
FIG. 3 is a top view of a preferred embodiment of the reversible high stiffness air turbine driven rotary shafting apparatus of the present invention;
FIG. 4 is a sectional view taken along line A-A of FIG. 2;
FIG. 5 is a sectional view taken along line B-B of FIG. 2;
FIG. 6 is a longitudinal enlarged perspective view of the air bearing shown in FIG. 1;
the parts in the drawings are numbered as follows: 1. the air turbine comprises an air turbine 11, a left-handed air turbine 12, a right-handed air turbine 2, a rotating shaft 3, an upper stop push plate 4, a lower thrust plate 41, a large circular table 411, an air inlet three, an air inlet 42, a small circular table 5, an air bearing 51, an air inlet one, an air inlet 52, an air inlet two, an air outlet 53, an air outlet one, an air outlet 6, a base 61, an air inlet four, an air inlet 62 and an air outlet two.
Detailed Description
The following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so as to enable those skilled in the art to more easily understand the advantages and features of the present invention, and thereby define the scope of the invention more clearly and clearly.
Referring to fig. 1 to 5, an embodiment of the present invention includes:
the utility model provides a but high rigidity air turbine drives gyration shafting device that commutates, adopts 1 drive pivot 2 of air turbine to revolve, pivot 2 by last push pedal 3, lower thrust plate 4 location installation in air bearing 5, specifically, the up end of pivot 2 passes through locating pin and last push pedal 3 fixed connection, the lower terminal surface of pivot 2 passes through locating pin and lower thrust plate 4 fixed connection, air bearing 5 inlays the dress and is in go up between push pedal 3, the lower thrust plate 4, and air bearing 5 respectively with pivot 2, last push pedal 3, lower thrust plate 4 clearance fit, air turbine 1 integrated into one piece is in on the circumference wall of lower thrust plate 3, including levogyration air turbine 11 and dextrorotation air turbine 12, thereby drive respectively by high-pressure gas levogyration air turbine 11, dextrorotation air turbine 12 are rotatory drive pivot 2, The upper stop push plate 3 rotates clockwise or anticlockwise.
With reference to fig. 4, a first air inlet 51, a second air inlet 52 and a first air outlet 53 are formed in the circumferential wall of the air bearing 5, the first air inlet 51, the second air inlet 52 and the first air outlet 53 extend to the inner wall of the air bearing 5 along the radial direction of the air bearing 5, high-pressure gas enters from the first air inlet 51 and the second air inlet 52, and an air film is formed at the clearance fit position between the air bearing 5 and the rotating shaft 2, the upper thrust plate 3 and the lower thrust plate 4, so that non-contact motion is realized between the rotating part, i.e., the rotating shaft 2, the upper thrust plate 3, the lower thrust plate 4 and the fixed part, i.e., the air bearing 5, and friction force is effectively reduced, and when the rotary shafting device stops working, internal high-pressure.
Referring to fig. 6, a plurality of throttling grooves 54 are disposed on a clearance fit surface between the air bearing 5 and the rotating shaft 2 and axially distributed along the air bearing 5. The throttling grooves 54 are uniformly distributed on the hole wall of the middle mounting hole of the air bearing 5 along the circumference. Namely, the throttling mode of the air bearing 5 is formed by combining small throttling holes (the first air inlet 51 and the first air inlet 52) and a surface throttling groove (54).
Preferably, the aperture of the first air inlet 51 and the second air inlet 52 is 0.1-1mm, the groove depth of the throttling groove 54 is 0.01-0.1mm, and the groove width is 0.05-1 mm.
The high-pressure gas generates pressure drop through first throttling when passing through the first air inlet 51 or the second air inlet 52, then the high-pressure gas diffuses along the throttling groove 54 and further generates pressure drop to realize second throttling, and as the air bearing 5 passes through the pressure drop twice, the air bearing has better capacity of resisting external load change under the action of external load, namely has higher rigidity, and compared with the traditional one-time throttling air bearing, the rigidity and the bearing capacity can be improved by more than 50%.
Referring to fig. 4 again, the longitudinal section of the lower thrust plate 4 is of an inverted "convex" shape, and includes an upper large circular truncated cone 41 and a lower small boss 42, and the small boss 42 is embedded on the base 6.
The circular wall of the big circular truncated cone 41 is provided with an air inlet III 411, the base is provided with an air inlet IV 61 and an air outlet II 62, the air inlet III 411 and the air inlet IV 61 are used for being connected with high-pressure gas, so that the high-pressure gas enters the air turbine 1 to drive the air turbine 1 to rotate, and the air outlet II 411 is used for discharging the high-pressure gas inside the air turbine 1.
In this embodiment, the left-handed air turbine 11 is integrally formed on the circumferential wall of the large circular truncated cone 41, the right-handed air turbine 12 is integrally formed on the circumferential wall of the small circular truncated cone 42, the air inlet three 411 is communicated with the left-handed air turbine 12, and the air inlet four 61 is communicated with the right-handed air turbine 12. When the rotary shafting device needs to be controlled to rotate clockwise, high-pressure gas is accessed from the air inlet III 411 and is input into the left-handed air turbine 11 to drive the left-handed air turbine 11 to rotate clockwise, and then the rotating shaft 2 is driven to rotate clockwise, otherwise, when the rotary shafting device needs to be controlled to rotate anticlockwise, high-pressure gas is accessed from the air inlet IV 61 and drives the right-handed air turbine 12 to rotate.
The second air outlet 62 is provided with a plurality of air outlets which are uniformly distributed on the circumferential surface of the base 6, and the second air outlet 62 is communicated with the left-handed air turbine 11 and the right-handed air turbine 12. When the rotary shafting device stops working, high-pressure gas inside the air turbine 1 is discharged from the second air outlet 62.
In another embodiment of the present invention, the right-handed air turbine 12 may be integrally formed on the circumferential wall of the large circular truncated cone 41, and the left-handed air turbine 11 is integrally formed on the small circular circumferential wall of the small circular truncated cone 42, so that the air inlet three 411 is communicated with the right-handed air turbine 12, and the air inlet four 61 is communicated with the left-handed air turbine 11.
The utility model discloses because the longitudinal section of thrust plate 4 is down "protruding" type, and consequently integrated into one piece is in air turbine and integrated into one piece on the big round platform 41 circumference wall of thrust plate 4 upper end are in down the axle footpath size of the air turbine on the little round platform 42 circumference wall of thrust plate 4 lower extreme is different, can obtain 2 kinds of different rotational speeds under the same air feed pressure, compares the single drive mode that the transmission can only obtain a rotational speed under fixed pressure more nimble, practical.
In summary, the utility model adopts full gas lubrication and gas drive, avoids the adoption of the motor, reduces the cost, simultaneously can make the structure more compact, and the turbine and the thrust plate are integrated, effectively reduces the volume and the motion quality of the whole motion shafting; meanwhile, the air bearing adopts a throttling mode of combining an air inlet and a throttling groove, and compared with the conventional air bearing, the rigidity and the bearing capacity can be improved by more than 50%; in addition, the gas can cool the shafting to further realize the control of temperature rise, and the motion precision of the shafting can be effectively improved.
In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship that the products of the present invention are usually placed when used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element to which the term refers must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.
Claims (10)
1. The utility model provides a reversible high rigidity air turbine drive gyration shafting device, adopts air turbine drive pivot gyration, the pivot by last thrust plate, lower thrust plate location mounting in air bearing, air bearing respectively with pivot, last thrust plate, lower thrust plate clearance fit, its characterized in that, air turbine integrated into one piece is in down on the circumference wall of thrust plate, including levogyration air turbine and dextrorotation air turbine, high-pressure gas drives respectively thereby levogyration air turbine, dextrorotation air turbine rotate drive pivot, go up the clockwise or anticlockwise gyration of thrust plate.
2. The reversible high-rigidity air turbine-driven rotary shafting device as claimed in claim 1, wherein a first air inlet, a second air inlet and a first air outlet are arranged on a circumferential wall of the air bearing, the first air inlet and the second air inlet are used for receiving high-pressure air, so that the high-pressure air enters the air bearing and forms an air film at the clearance fit position of the air bearing, the rotating shaft, the upper thrust plate and the lower thrust plate, and the first air outlet is used for exhausting the high-pressure air in the air bearing.
3. The reversible high-rigidity air turbine driven rotary shafting device according to claim 2, wherein a plurality of throttling grooves are formed on the clearance fit surface between the air bearing and the rotating shaft and are distributed along the axial direction of the air bearing.
4. The reversible high-rigidity air turbine driven rotary shafting device according to claim 3, wherein said throttling grooves are uniformly distributed on the hole wall of the middle mounting hole of said air bearing along the circumference.
5. The reversing high-rigidity air turbine driving rotary shafting device according to claim 3 or 4, wherein the diameters of the first air inlet and the second air inlet are 0.1-1mm, the groove depth of the throttling groove is 0.01-0.1mm, and the groove width is 0.05-1 mm.
6. The reversible high-rigidity air turbine driving rotary shafting device as claimed in claim 1, wherein the longitudinal section of the lower thrust plate is of an inverted 'convex' shape and comprises an upper large circular truncated cone and a lower small boss, and the small boss is embedded on the base.
7. The reversible high-rigidity air turbine driving rotary shafting device according to claim 6, wherein a third air inlet is formed in the circumferential wall of the large circular truncated cone, a fourth air inlet and a second air outlet are formed in the base, the third air inlet and the fourth air inlet are used for receiving high-pressure air to enable the high-pressure air to enter the air turbine to drive the air turbine to rotate, and the second air outlet is used for discharging the high-pressure air in the air turbine.
8. The reversible high-rigidity air turbine-driven rotary shafting device according to claim 7, wherein the left-handed air turbine is integrally formed on the circumferential wall of the large circular truncated cone, the right-handed air turbine is integrally formed on the circumferential wall of the small boss, the third air inlet is communicated with the left-handed air turbine, and the fourth air inlet is communicated with the right-handed air turbine.
9. The reversible high-rigidity air turbine-driven rotary shafting device according to claim 7, wherein the right-handed air turbine is integrally formed on the circumferential wall of the large circular truncated cone, the left-handed air turbine is integrally formed on the small circumferential wall of the small boss, the third air inlet is communicated with the right-handed air turbine, and the fourth air inlet is communicated with the left-handed air turbine.
10. The reversible high-rigidity air turbine driving rotary shafting device as claimed in any one of claims 7 to 9, wherein a plurality of air outlets are uniformly distributed on the circumferential surface of the base, and the air outlets are communicated with the left-handed air turbine and the right-handed air turbine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921368078.3U CN210440548U (en) | 2019-08-22 | 2019-08-22 | Reversible high-rigidity air turbine driving rotary shafting device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921368078.3U CN210440548U (en) | 2019-08-22 | 2019-08-22 | Reversible high-rigidity air turbine driving rotary shafting device |
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| CN210440548U true CN210440548U (en) | 2020-05-01 |
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| CN201921368078.3U Active CN210440548U (en) | 2019-08-22 | 2019-08-22 | Reversible high-rigidity air turbine driving rotary shafting device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110388437A (en) * | 2019-08-22 | 2019-10-29 | 江苏集萃精凯高端装备技术有限公司 | A kind of high rigidity air turbine driving rotary axis system device capable of reversing |
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2019
- 2019-08-22 CN CN201921368078.3U patent/CN210440548U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110388437A (en) * | 2019-08-22 | 2019-10-29 | 江苏集萃精凯高端装备技术有限公司 | A kind of high rigidity air turbine driving rotary axis system device capable of reversing |
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