CN203098574U - Large precise rotary table air floatation component - Google Patents
Large precise rotary table air floatation component Download PDFInfo
- Publication number
- CN203098574U CN203098574U CN 201220444518 CN201220444518U CN203098574U CN 203098574 U CN203098574 U CN 203098574U CN 201220444518 CN201220444518 CN 201220444518 CN 201220444518 U CN201220444518 U CN 201220444518U CN 203098574 U CN203098574 U CN 203098574U
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- air
- air supporting
- air floatation
- grating
- bearing
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Abstract
The utility model discloses a large precise rotary table air floatation component which comprises an air floatation bracket and an air floatation shaft sleeve sheathed on the air floatation bracket, wherein the air floatation bracket comprises a vertical barrel and a bearing seat arranged at the bottom of the vertical barrel; the air floatation shaft sleeve comprises a base and a shaft sleeve arranged on the base; the shaft sleeve is sheathed outside the vertical barrel; the base is arranged on the bearing seat; the top surface of the bearing seat and the wall of the vertical barrel are respectively provided with an air outlet hole which is through from inside to outside; the bearing seat is provided with an air inlet hole which is through from inside to outside; and the air outlet holes are communicated with the air inlet hole. When the large precise rotary table air floatation component is in use, high-pressure air enters from the air inlet hole and can be discharged through the air outlet holes, so that a layer of rigid air film is formed between the air floatation bracket and the air floatation shaft sleeve, the air floatation shaft sleeve can be used for carrying large weight and can rotate relative to the air floatation bracket without friction or with little friction, the air floatation shaft sleeve is guaranteed not to have rotary eccentricity, and the carried object is maintained to rotate stably.
Description
Technical field
The utility model relates to a kind of accessory of large-scale turntable, relates in particular to a kind of air supporting assembly that can carry the large-scale precision turntable of large and heavy objects and the rotation of energy held stationary.
Background technique
Turret plant now has been widely used in manufacturing industry, as numerical control hydraulic swivel etc.Can carry the large-scale turntable that is of large and heavy objects in the turret plant.
In existing large-scale turntable, the simple and mechanical device of many employings is as whirligig, as the bearing connection set, these traditional whirligigs are hour no problem in carrying workpiece weight, but during large and heavy objects, this device just breaks down easily in carrying, as: owing to be difficult to keep and bearing apparatus coaxial on center of gravity by bearing material, cause to make bearing material steadily to move, as the centrifugal phenomenon in the rotation; Because bearing material is very heavy, so the friction between the rotation surface of contact in the whirligig is also bigger, cause wearing and tearing more serious, the lighter shortens the life-span of whirligig, and security incident appears in weight person in rotary course.
The model utility content
The purpose of this utility model just is to provide in order to address the above problem a kind of air supporting assembly of the large-scale precision turntable that can carry large and heavy objects and can held stationary rotate.
In order to achieve the above object, the utility model has adopted following technological scheme:
The utility model comprises the air supporting support and is set in air supporting axle sleeve on this air supporting support that described air supporting support comprises upright tube and is arranged at the bearing of upright tube bottom; Described air supporting axle sleeve comprises base and is arranged at beam barrel on the base; Described beam barrel is set in outside the described upright tube, and described base places on the described bearing; The air outlet hole that is interlinked to the outside in the barrel of the end face of described bearing and described upright tube is provided with, the inlet hole that is interlinked to the outside in described bearing is provided with, described air outlet hole and described inlet hole communicate.
Form a cavity jointly between the beam barrel inwall of the upright drum outer wall of air supporting support and air supporting axle sleeve, above the bearing of air supporting support and between below the base of air supporting axle sleeve, the space of described cavity is minimum, generally less than one millimeter, in addition little of tens microns.During use, heavy workpiece is installed in air-bearing shafts and puts, and inlet hole is connected with the steam outlet pipe of high pressure constant pressure air feeding device; Pressurized gas enter from inlet hole, upright tube circumferential outer surface and the ejection of bearing upper surface from described air supporting support, in above-mentioned cavity, form the air film that one deck has rigidity, described gas mould can make air supporting axle sleeve carrying large and heavy objects, can realize that again the air supporting axle sleeve rotates with respect to the no friction or the friction of air supporting support, and make the air supporting axle sleeve off-centre that can not rotate, keep by the bearing material smooth rotation.
Particularly, described air outlet hole is a plurality of, is uniformly distributed on the barrel of the end face of described bearing and described upright tube, and described inlet hole is a plurality of and is distributed in the side of described bearing.
Described air outlet hole has two kinds with the structure that communicates between the described inlet hole:
One, all described air outlet hole and described inlet holes all communicate; Its two, each described inlet hole and a plurality of described air outlet hole are an air-flow path, inlet hole and air outlet hole in the same air-flow path communicate.These two kinds of structures all can realize same function, and the air pressure according to high pressure constant pressure air feeding device in the application is selected suitable structure.
Further, described air supporting assembly also comprises grating connecting ring, annulus grating, reading support and read head, described grating connecting ring is installed on the upper end of described beam barrel, described annulus grating is installed on the upper end of described grating connecting ring, evenly is provided with a plurality of above-below directions and corresponding mutually unthreaded hole on the described grating connecting ring and on the described annulus grating; Described reading support is installed on the upper end of described upright tube, and described read head is installed on the described reading support, and the position of the unthreaded hole on the position of described read head and the described annulus grating is corresponding.
In the application, the signal output part of read head is connected with the induced signal input end of central control unit.Read head is installed on the upright tube by the reading support, remains static; The annulus grating is installed on the beam barrel by the grating connecting ring, is in the state of rotatablely moving.Owing on the annulus grating equally distributed unthreaded hole is arranged, so read head can be sensed the position of unthreaded hole, and this signal is transferred to central control unit, central control unit goes out the accurate angle of swing of beam barrel according to this calculated signals, and controls the air supporting axle sleeve by rotating driving device and realize the highi degree of accuracy rotation.
As preferably, described read head is active photoreceptor.
The beneficial effects of the utility model are:
The utility model is set in the structure of air supporting support outside by the air-bearing shafts cover, and inlet hole and air outlet hole be set on the air supporting support, thereby between air supporting support and air supporting axle sleeve, form the air film that one deck has rigidity, realized the large and heavy objects carrying and do not had friction or the friction rotation, and kept by the bearing material smooth rotation;
The utility model is installed in read head on the upright tube by the reading support, the annulus grating that will have even distribution unthreaded hole is installed on the beam barrel by the grating connecting ring, realized the accurate induction of read head to the annulus grating, thereby obtain the accurate angle of swing of beam barrel, and, reach purpose to the highi degree of accuracy Spin Control of weight workpiece by the rotation of rotating driving device control air supporting axle sleeve realization highi degree of accuracy.
Description of drawings
Fig. 1 is the three-dimensional erection drawing of air supporting support described in the utility model, read head and reading support;
Fig. 2 is the three-dimensional erection drawing of air supporting axle sleeve described in the utility model, annulus grating and grating connecting ring;
Fig. 3 is the plan view of air supporting assembly described in the utility model;
Fig. 4 is the A-A sectional view among Fig. 3.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described in detail:
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, the utility model comprises air supporting support, reading support 2, read head 1, air supporting axle sleeve, grating connecting ring 8 and annulus grating 7, described air-bearing shafts cover is set on the described air supporting support, described air supporting support comprises upright tube 3 and is arranged at the bearing 5 of the bottom of upright tube 3, reading support 2 is installed on the upper end of upright tube 3, and read head 1 is installed on the reading support 2; Described air supporting axle sleeve comprises base 10 and is arranged at beam barrel 9 on the base 10, grating connecting ring 8 is installed on the upper end of beam barrel 9, annulus grating 7 is installed on the upper end of grating connecting ring 8, evenly is provided with a plurality of above-below directions and corresponding mutually unthreaded hole on the grating connecting ring 8 and on the annulus grating 7; The position of the unthreaded hole on the position of read head 1 and the annulus grating 7 is corresponding; Beam barrel 9 is set in outside the upright tube 3, and base 10 places on the bearing 5; The air outlet hole 4 that is interlinked to the outside in the barrel of the end face of bearing 5 and upright tube 3 is provided with, the inlet hole 6 that is interlinked to the outside in bearing 5 is provided with, air outlet hole 4 and inlet hole 6 communicate; Read head 1 is active photoreceptor.
As shown in Figure 1, air outlet hole 4 is a plurality of, is uniformly distributed on the barrel of the end face of bearing 5 and upright tube 3, and inlet hole 6 is for a plurality of and be distributed in the side of bearing 5; The plan view profile of bearing 5 can be symmetric shape such as circular, square.
In conjunction with Fig. 1, air outlet hole 4 has two kinds with the structure that communicates between the inlet hole 6:
One, all air outlet hole 4 and inlet holes 6 all communicate; Its two, each inlet hole 6 is an air-flow path with a plurality of air outlet holes 4, inlet hole 6 and air outlet hole 4 in the same air-flow path communicate.These two kinds of structures all can realize same function, select suitable structure according to the air pressure of the high pressure constant pressure air feeding device (not shown) that air pressure is provided for inlet hole 6 in the application.
As shown in Figure 3 and Figure 4, between the inwall of the outer wall of the upright tube 3 of air supporting support and the beam barrel 9 of air supporting axle sleeve, above the bearing 5 of air supporting support below the base 10 of air supporting axle sleeve between cavity of formation jointly, the space of this cavity is minimum, generally less than one millimeter, even it is little, so also not shown among the figure to tens microns.
In the application, the heavy workpiece (not shown) is installed in air-bearing shafts and puts, and inlet hole 6 is connected with the steam outlet pipe of high pressure constant pressure air feeding device (not shown); The signal output part of read head 1 is connected with the induced signal input end of central control unit (not shown).Pressurized gas enter from inlet hole 6, from upright 3 the circumferential outer surface of this air supporting support and the upper surface ejection of bearing 5, in above-mentioned cavity, form the air film (not shown) that one deck has rigidity, this gas mould provides support force upwards to the air supporting axle sleeve, and axial binding force, can make air supporting axle sleeve carrying large and heavy objects, can realize that again the air supporting axle sleeve rotates with respect to the no friction or the friction of air supporting support, and make the air supporting axle sleeve off-centre that can not rotate, keep by the bearing material smooth rotation.
Read head 1 is installed on the upright tube 3 by reading support 2, remains static; Annulus grating 7 is installed on the beam barrel 9 by grating connecting ring 8, is in the state of rotatablely moving.Owing on the annulus grating 7 equally distributed unthreaded hole is arranged, so read head 1 can be sensed the position of unthreaded hole, read the light pulse number that passes, form pulse signal, and this signal is transferred to central control unit, central control unit goes out the accurate angle of swing of beam barrel 9 according to this calculated signals, and controls the air supporting axle sleeve by the rotating driving device (not shown) and realize the highi degree of accuracy rotation, thereby reaches the purpose to the highi degree of accuracy Spin Control of weight workpiece.
Claims (6)
1. large-scale precision turntable air supporting assembly is characterized in that: comprise the air supporting support and be set in air supporting axle sleeve on this air supporting support, described air supporting support comprises upright tube and is arranged at the bearing of upright tube bottom; Described air supporting axle sleeve comprises base and is arranged at beam barrel on the base; Described beam barrel is set in outside the described upright tube, and described base places on the described bearing; The air outlet hole that is interlinked to the outside in the barrel of the end face of described bearing and described upright tube is provided with, the inlet hole that is interlinked to the outside in described bearing is provided with, described air outlet hole and described inlet hole communicate.
2. large-scale precision turntable air supporting assembly according to claim 1, it is characterized in that: described air outlet hole is a plurality of, is uniformly distributed on the barrel of the end face of described bearing and described upright tube, described inlet hole is a plurality of and is distributed in the side of described bearing.
3. large-scale precision turntable air supporting assembly according to claim 2 is characterized in that: all described air outlet hole and described inlet holes all communicate.
4. large-scale precision turntable air supporting assembly according to claim 2 is characterized in that: each described inlet hole and a plurality of described air outlet hole are an air-flow path, and inlet hole and air outlet hole in the same air-flow path communicate.
5. large-scale precision turntable air supporting assembly according to claim 1, it is characterized in that: described air supporting assembly also comprises grating connecting ring, annulus grating, reading support and read head, described grating connecting ring is installed on the upper end of described beam barrel, described annulus grating is installed on the upper end of described grating connecting ring, evenly is provided with a plurality of above-below directions and corresponding mutually unthreaded hole on the described grating connecting ring and on the described annulus grating; Described reading support is installed on the upper end of described upright tube, and described read head is installed on the described reading support, and the position of the unthreaded hole on the position of described read head and the described annulus grating is corresponding.
6. large-scale precision turntable air supporting assembly according to claim 5, it is characterized in that: described read head is active photoreceptor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220444518 CN203098574U (en) | 2012-09-03 | 2012-09-03 | Large precise rotary table air floatation component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220444518 CN203098574U (en) | 2012-09-03 | 2012-09-03 | Large precise rotary table air floatation component |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203098574U true CN203098574U (en) | 2013-07-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220444518 Expired - Fee Related CN203098574U (en) | 2012-09-03 | 2012-09-03 | Large precise rotary table air floatation component |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203098574U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102817915A (en) * | 2012-09-03 | 2012-12-12 | 中国工程物理研究院总体工程研究所 | Air flotation assembly for large-scale precise rotary table |
| CN104533956A (en) * | 2015-01-22 | 2015-04-22 | 哈尔滨工业大学 | Active compensation type low-swirl shaft-driven air bearing |
| CN111637159A (en) * | 2020-05-18 | 2020-09-08 | 哈尔滨工程大学 | Self-adaptive forced lubrication bearing with pressurizing hole |
| CN111637161A (en) * | 2020-05-18 | 2020-09-08 | 哈尔滨工程大学 | Forced lubrication bearing with distributed pores |
| CN111637160A (en) * | 2020-05-18 | 2020-09-08 | 哈尔滨工程大学 | Forced lubrication bearing with uneven aperture |
-
2012
- 2012-09-03 CN CN 201220444518 patent/CN203098574U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102817915A (en) * | 2012-09-03 | 2012-12-12 | 中国工程物理研究院总体工程研究所 | Air flotation assembly for large-scale precise rotary table |
| CN104533956A (en) * | 2015-01-22 | 2015-04-22 | 哈尔滨工业大学 | Active compensation type low-swirl shaft-driven air bearing |
| CN111637159A (en) * | 2020-05-18 | 2020-09-08 | 哈尔滨工程大学 | Self-adaptive forced lubrication bearing with pressurizing hole |
| CN111637161A (en) * | 2020-05-18 | 2020-09-08 | 哈尔滨工程大学 | Forced lubrication bearing with distributed pores |
| CN111637160A (en) * | 2020-05-18 | 2020-09-08 | 哈尔滨工程大学 | Forced lubrication bearing with uneven aperture |
| CN111637160B (en) * | 2020-05-18 | 2021-11-05 | 哈尔滨工程大学 | Forced lubrication bearing with uneven aperture |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130731 Termination date: 20180903 |