CN114290082A - Lightweight air flotation workbench - Google Patents
Lightweight air flotation workbench Download PDFInfo
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- CN114290082A CN114290082A CN202111521752.9A CN202111521752A CN114290082A CN 114290082 A CN114290082 A CN 114290082A CN 202111521752 A CN202111521752 A CN 202111521752A CN 114290082 A CN114290082 A CN 114290082A
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Abstract
The invention discloses a light air-floating workbench, and belongs to the field of geometric quantity. The invention mainly comprises three parts, namely a friction driving component, a basic sliding component and a one-dimensional sliding workbench. The invention adopts an air adsorption form to realize guiding movement, realizes one-dimensional movement along the direction of a marble guide rail, realizes displacement in a friction driving form by driving a friction wheel through a motor, realizes primary positioning of the whole workbench, and realizes +/-2 mu m repetition precision by matching with measured value feedback of standards such as an interferometer and the like; the device is also provided with a one-dimensional motion top main worktable, and can meet the requirement of +/-1 mu m manual fine adjustment accurate positioning under various fine adjustment operations. The device has the characteristics of large stroke, low overall load, high operation precision and manual fine adjustment, and can realize high-linearity displacement of the optical device after the measured element is installed. The invention can be directly applied to the composition of the movable sliding table in a large-size length standard device and is used for the calibration of equipment such as a laser tracker, an interferometer, a standard steel tape and the like.
Description
Technical Field
The invention relates to a light air-floating workbench, and belongs to the field of geometric quantity.
Background
With the continuous development of national industrialization, the application of related large-size metering equipment is increasing day by day, and the related fields comprise a plurality of different fields such as aviation, aerospace, national defense and the like. Daily calibration requirements of large-size metering equipment such as a laser tracker, a laser interferometer, a total station and the like are gradually increased, and therefore large-size length standard devices with more quantity and more types are gradually built in China. The corresponding standard devices are respectively provided with displacement working tables in different forms for realizing one-dimensional displacement of the measured object along the guide rail with the standard length.
The displacement table commonly used at present is mainly realized by the following methods.
One is through adopting linear electric motor drive marble air supporting guide rail workstation structure, through the linear electric motor who lays along the guide rail realization workstation one-dimensional displacement drive, adopts the air supporting slip direction form between displacement workstation and the marble guide rail. The realization form has the defects that the whole guide rail needs to be paved with linear motor stators, thereby greatly increasing the cost. Meanwhile, the sliding table cannot realize high-precision adjustment and positioning, the positioning is realized by a driving motor, the positioning precision is influenced by factors such as motor pulse and the like, and the precise positioning function cannot be realized.
And the second is that a gear rack or a lead screw is adopted to drive the marble air-floatation guide rail workbench structure, and the workbench drives the gear rack or the lead screw through a motor to realize the movement of the workbench along the direction of the horizontal guide rail. The disadvantages of the form are that the drive mode of the form such as a lead screw is difficult to realize the laying in a longer distance and is suitable for a shorter guide rail stroke; the gear rack and other forms need to be paved in the whole process, the precision of the gear rack and other forms is influenced by the installation precision of the guide rail reference surface and the gear rack, and the longer the length of the gear rack and other forms, the greater the influence on the precision is; the overall mass is heavy, which brings a large load; meanwhile, the positioning of the workbench is influenced by motor pulse, and high-precision positioning is difficult to realize even through compensation.
Disclosure of Invention
The invention mainly aims to provide a light air-floating workbench, which can meet the requirement of one-dimensional movement of a marble air-floating guide rail workbench along the direction of a guide rail, can also meet the requirement of realizing accurate positioning of the workbench under the required working condition, and can realize driving under the condition of ensuring the operation accuracy by meeting various strokes and also has the function of high-accuracy fine adjustment.
The invention is realized by the following technical scheme:
the invention discloses a lightweight air-floating workbench which mainly comprises three parts, namely a friction driving component, a basic sliding component and a one-dimensional sliding workbench.
The light-weight air floating workbench comprises a granite guide rail, a one-dimensional sliding workbench, a basic sliding assembly, a friction driving assembly and a sliding guide rail. The sliding guide rail is arranged on the side wall of the granite guide rail; the one-dimensional sliding workbench is fixed above the basic sliding assembly; the friction drive assembly is secured to the underside of the base slide assembly.
The one-dimensional sliding workbench comprises a sliding guide rail, a sliding upper table top, a sliding lower table top, a fixed sliding block, a spiral ejector rod, a differential head bracket and a precise differential head; fixedly connecting the sliding lower table top with the top of the main air floating plate; then the sliding guide rail is arranged in the groove at the outer side of the sliding lower table surface, so that the sliding lower table surface and the sliding upper table surface slide relatively; the fixed sliding block is arranged at the center of the outer side of the bottom of the upper sliding table top, the differential head support is arranged at the center of the end face of one side of the lower sliding table top, and the fixed sliding block is connected with the differential head support through the spiral ejector rod. The precise differential head fixed at the outer end of the spiral ejector rod is used, the spiral ejector rod is rotated to enable the spiral ejector rod to rotate in the inner thread of the differential head support to generate left-right displacement, namely, the fixed sliding block connected with the spiral ejector rod is driven to move left and right, and the position adjustment of the sliding upper table top along the one-dimensional direction is completed. And fixing related measured objects and corresponding detection equipment by sliding the plurality of array mounting holes on the top surface and the side surface of the upper table top, so as to realize a precision measurement process.
The basic sliding assembly comprises a left air floating plate, a main body air floating surface, a right air floating cushion, a right air floating block and a left air floating cushion; the air floating plates are respectively fixed on two sides below the main air floating plate; an air floating cushion is fixedly arranged on the inner side wall of the air floating plate; after ventilation, the air flotation contact between the top surface and the side surface of the granite guide rail is realized by adjusting the distance between the air flotation cushion and the granite guide rail; the left air floating plate or the right air floating plate is composed of two air floating blocks which keep a certain distance; the friction driving assembly is arranged in the sliding table, left and right air floatation guiding contact is achieved by adjusting and controlling the lateral air floatation interval within 1mm, and the sliding table is driven by the friction driving assembly to complete integral one-dimensional motion driving of the sliding table.
The friction driving assembly comprises a sliding block, a movable support, a speed reducer, a motor, a friction air floating cushion, a friction air floating frame, a friction wheel, an output shaft, a fixed support, a shaft sleeve, a tensioning rod, a mounting rotating handle, a mounting screw rod, a spring and a tensioning screw; the whole structure of the fixed support is a convex arched surface, flat parts on two sides are used for mounting two sliding blocks, shaft sleeves are mounted in two mounting holes on the top surface in the fixed support, a rotating handle and an adjusting mounting screw are mounted in threaded holes, 4 threaded holes are formed in the side surface of the fixed support for mounting a friction air floating frame, and an internal square groove formed by the convex arched surface of the fixed support is used for mounting a movable support; the fixed support is fixed on the sliding guide rail through two sliding blocks, so that the fixed support can realize displacement along the direction of the granite guide rail; installing a friction air floating frame at one side of the fixed support close to the granite guide rail, and respectively installing a front friction air floating cushion and a rear friction air floating cushion; the air floatation contact is realized through the two friction air floatation cushions and the two air floatation blocks, and the sliding table can be driven to integrally realize one-dimensional movement.
Then the movable support is placed in an internal square groove formed by the convex arched surface of the fixed support, so that the movable support can move along the direction in the groove, meanwhile, a wear-resistant material shaft sleeve is arranged in a mounting hole in the fixed support, 2 tension rods are inserted into the mounting hole and penetrate through 2 high-strength springs to be connected with the movable support, and a tensioning screw of the movable support is screwed down to realize the guiding and fixing function of the movable support; after the motor and the speed reducer are assembled, the motor and the speed reducer are installed on the outer side of the movable support, and a friction wheel made of metal materials is installed at the output shaft of the speed reducer and is used for being in contact with the sliding guide rail to achieve friction transmission. When the movable support is installed, the movable support is pulled outwards by adjusting the position of the installation screw rod through the installation rotation in the middle of the adjusting fixed support, 2 high-strength springs are compressed, the movable support is placed into the movable support, the position of the installation screw rod is adjusted to release the movable support inwards, the springs are released, pre-tightening between the friction wheel and the sliding guide rail can be achieved under the tension of the springs towards the outside, and the stability and reliability of the whole friction driving process are guaranteed.
The method for adjusting the distance between the air floating cushion and the granite guide rail comprises the following steps: after ventilation, the air flotation contact between the top surface and the two surfaces of the left side surface is realized by adjusting the distance between the two left side air flotation cushions and the granite guide rail. At the moment, two right side air floating blocks are installed at the bottom of the right side of the main air floating plate, two right side air floating cushions are additionally installed inside the main air floating plate, air floating contact with the right side face of the granite guide rail is achieved by adjusting the distance between the two right side air floating cushions and the granite guide rail after ventilation, left and right gaps in the operation process of the sliding table can be effectively controlled, and operation precision is improved.
Has the advantages that:
1. the light air-floating workbench disclosed by the invention adopts an air adsorption form to realize guiding movement, can realize one-dimensional movement along the marble guide rail direction, realizes displacement in a friction driving form by driving a friction wheel through a motor, achieves the primary positioning function of the whole workbench, and simultaneously realizes +/-2 mu m repetition precision by matching with the feedback of the measured values of standards such as an interferometer and the like; meanwhile, the device is also provided with a one-dimensional motion top main workbench, and the accurate positioning of +/-1 mu m manual fine adjustment under various fine adjustment operations can be met. The device has the characteristics of large stroke, low overall load, high operation precision and manual fine adjustment, and can realize high-linearity displacement of the optical device after the measured element is installed.
2. According to the light-weight air floating workbench disclosed by the invention, a friction driving assembly is connected with a basic sliding assembly through an air floating pad, under the driving action of a motor, a friction wheel is in contact with a sliding guide rail arranged along the side surface of a marble guide rail to realize friction driving and realize movement along the sliding direction, and the pre-pressure of a spring is released through two high-strength springs so as to ensure the stability of friction contact and the requirement of shock absorption; the basic sliding assembly realizes air floatation movement and a guiding function on the surface of a marble guide rail through a main body air floatation surface at the bottom of the main body air floatation plate, a left side air floatation plate and two split structure right side air floatation plates, the top of the main body air floatation plate can be used for installing a one-dimensional sliding workbench for realizing precise one-dimensional adjustment, and a right side air floatation cushion is attached to a friction air floatation frame air floatation block to realize integral movement of a driving sliding table. The one-dimensional sliding workbench fixes a detected target of related equipment through the sliding upper table top, the sliding lower table top is connected with the sliding upper table top through a sliding guide rail, and the precise differential head is adopted to adjust the displacement for realizing the relative precise one-dimensional motion of the upper table top and the lower table top.
3. According to the light air floating workbench disclosed by the invention, after ventilation, air floating contact between the top surface and two surfaces of the left side surface is realized by adjusting the distance between the two left side air floating cushions and the granite guide rail; after ventilating, the air floatation contact with the right side surface of the granite guide rail is realized by adjusting the distance between the two right side air floatation cushions and the granite guide rail, the left and right gaps in the operation process of the sliding table can be effectively controlled, and the operation precision is improved.
4. The light-weight air-floating workbench disclosed by the invention has the advantages that the whole structure is made of aluminum alloy materials, the related weight reduction design is carried out, the requirement on light weight of equipment is met, the light-weight air-floating workbench is suitable for being carried on marble guide rails in various forms to realize the precise displacement of a measured target, and the light-weight air-floating workbench has the advantages of large stroke, low whole load, high operation precision and capability of being manually finely adjusted.
5. The light air-floating workbench disclosed by the invention can be directly applied to the formation of a movable sliding table in a related large-size length standard device, and is used for the calibration work of related equipment such as a laser tracker, an interferometer, a standard steel tape and the like.
Drawings
FIG. 1 is a schematic diagram of the main structure of the present invention;
FIG. 2 is a schematic structural view of the friction drive assembly of the present invention; wherein figure a is a side view; FIG. b is a top view;
FIG. 3 is a schematic view of the basic slide assembly of the present invention;
FIG. 4 is a schematic view of a one-dimensional sliding table structure according to the present invention;
FIG. 5 is an overall operational schematic of the present invention;
fig. 6 is a view showing the structure of a fixing bracket.
Wherein: 1-granite guide rail, 2-photogrammetric equipment, 3-measured object, 4-one-dimensional sliding workbench, 5-basic sliding component, 6-friction driving component, 7-sliding guide rail, 8-sliding block, 9-movable support, 10-speed reducer, 11-motor, 12-friction air-floating cushion, 13-friction air-floating frame, 14-friction wheel, 15-output shaft, 16-fixed support, 17-shaft sleeve, 18-tension rod, 19-mounting a rotating handle, 20-mounting a screw rod, 21-a spring, 22-a tensioning screw, 23-a left air floating plate, 24-a main air floating plate, 25-a main air floating surface, 26-a right air floating pad, 27-a right air floating block, 28-a left air floating pad, 29-a sliding guide rail, 30-a sliding upper table-board, 31-a sliding lower table-board, 32-a fixed sliding block, 33-a spiral ejector rod, 34-a differential head bracket and 35-a precise differential head.
Detailed Description
Referring to fig. 1, the light-weight air floating workbench disclosed in this embodiment includes a granite guide rail 1, a one-dimensional sliding workbench 4, a base sliding assembly 5, a friction driving assembly 6, and a sliding guide rail 7.
The friction driving assembly 6 and the sliding guide rail 7 are in a friction driving transmission mode, and the working process that the light air floating workbench moves along the direction of the granite guide rail 1 is achieved. The sliding guide rail 7 is arranged on one side of the granite guide rail 1 from the beginning to the end. The basic sliding assembly 5 is placed on the granite guide rail 1 and slides in an air-floating guiding mode with the granite guide rail 1, so that the one-way precise movement of the whole light-weight air-floating workbench is realized. A one-dimensional sliding workbench 4 is arranged on the top mounting surface of the basic sliding component 5 and used for realizing precise one-dimensional adjustment. The top of the one-dimensional sliding workbench 4 is provided with a measured target 3, and the side surface is provided with a photogrammetric equipment 2 and the like, which is convenient for implementing the verification and calibration of various different equipments.
Referring to fig. 2(a) and 2(a), in use, the friction driving assembly 6 firstly fixes the fixed bracket 16 on the sliding guide rail 7 through two sliding blocks 8, so that the fixed bracket can realize displacement along the direction of the granite guide rail 1; the friction air floating frame 13 is arranged on one side, close to the granite guide rail 1, of the inside of the fixed support 16, the front friction air floating cushion and the rear friction air floating cushion 12 are respectively arranged, air floating contact is achieved through the two friction air floating frames and the two right air floating blocks 27 in the base sliding assembly 5, and therefore the sliding table can be driven to integrally achieve one-dimensional movement. Then the movable bracket 9 is placed in an inner square groove formed by a convex arch surface of the fixed bracket 16 to move along the direction in the groove, meanwhile, a wear-resistant material shaft sleeve 17 is arranged in a mounting hole on the fixed bracket 16, 2 tensioning rods 18 are inserted into the mounting hole and penetrate through 2 high-strength springs 21 to be connected with the movable bracket 9, and a tensioning screw 22 of the movable bracket 9 is screwed down to realize the guiding and fixing function of the movable bracket 9; after the motor 11 and the speed reducer 10 are assembled, the motor is installed on the outer side of the movable support 9, and a friction wheel 14 made of metal is installed at an output shaft 15 of the speed reducer 10 and is used for being in contact with the sliding guide rail 7 to achieve friction transmission. When the movable support 9 is installed, the position of the installation screw rod 20 is adjusted by adjusting the installation rotating handle 19 in the middle of the fixed support 16 to pull the movable support 9 outwards to compress the 2 high-strength springs 21, then the movable support 9 is placed into the fixed support, the position of the installation screw rod 20 is adjusted to release the movable support 9 inwards, the springs 21 are released, pre-tightening between the friction wheel 14 and the sliding guide rail 7 can be realized under the outward tension of the springs 21, and the stability and reliability of the whole friction driving process are ensured.
Referring to fig. 3, in the basic sliding assembly 5, first, a left air floating plate 23 is installed at the bottom of the left side of a main air floating plate 24, and is fixed in position through corresponding fixing and positioning holes, and two left air floating pads 28 are installed inside the main air floating plate, and are integrally placed on a granite guide rail 1, after ventilation, an air floating contact is realized between a main air floating surface 25 at the bottom of the main air floating plate 24 and the top surface of the granite guide rail 1, and an air floating contact between the top surface and two surfaces of the left side is realized by adjusting the distance between the two left air floating pads 28 and the granite guide rail 1. At this moment, two right side air-floating blocks 27 are installed at the bottom of the right side of the main air-floating plate 24, two right side air-floating cushions 26 are additionally installed inside, air-floating contact with the right side surface of the granite guide rail 1 is realized by adjusting the distance between the two right side air-floating cushions 26 and the granite guide rail 1 after ventilation, and left and right clearances in the operation process of the sliding table can be effectively controlled, so that the operation precision is improved. The opposite inner side surfaces of the two right air floating blocks 27 are in air floating contact with the front and the rear friction air floating pads 12 of the friction driving assembly 6 through distance adjustment, and the driving of the integral one-dimensional motion of the sliding table is completed under the driving of the friction driving assembly 6.
Referring to fig. 4, in the one-dimensional sliding table 4, firstly, the top of the air floating plate of the main body of the sliding lower table 31 is fixed by bolts, then the sliding guide rail 29 is installed in the groove outside the sliding lower table 31, the sliding upper table 30 is connected with the sliding lower table through the threaded hole at the top of the side rail in the sliding guide rail 29, and the one-dimensional relative motion between the sliding lower table 31 and the sliding upper table 30 is realized after the gap is adjusted. Meanwhile, the fixed sliding block 32 is arranged at the center of the outer side of the bottom of the sliding upper table board 30, the differential head bracket 34 is arranged at the center of one side end face of the sliding lower table board 31, and the fixed sliding block 32 is connected with the differential head bracket 34 through the spiral ejector rod 33. By using the precise differential head 35 fixed at the outer end of the screw ejector rod 33, the screw ejector rod 33 is rotated to cause the screw thread in the differential head bracket 34 to rotate to generate left and right displacement, namely, the fixed sliding block 32 connected with the screw ejector rod is driven to move left and right, and the position adjustment of the sliding upper table surface 30 along the one-dimensional direction is completed. And then the related measured object 3 or the photogrammetric equipment 2 is fixed by sliding the plurality of array mounting holes on the side surface of the top surface of the upper table board 30, so that the precise measurement process is realized.
Referring to fig. 5, the working method of the light-weight air floating table disclosed in this embodiment is as follows: firstly, the base sliding assembly 5 is integrally placed on the table top of a granite guide rail 1, after ventilation, a main body air floating surface 25 at the bottom of a main body air floating plate 24 is in air floating contact with the top surface of the granite guide rail 1, two left side air floating pads 28 on a left side air floating plate 23 are adjusted to be in air floating contact with the left side surface of the granite guide rail 1, then two right side air floating pads 26 are adjusted, air floating contact with the right side surface of the granite guide rail 1 is realized by adjusting the distance between the two right side air floating pads 26 and the granite guide rail 1, a left gap and a right gap in the operation process of the sliding table are effectively controlled, and the precision and the stability of the integral operation of the workbench are realized; fixing the fixed support 16 of the friction driving assembly 6 on the sliding guide rail 7 through the two sliding blocks 8, ensuring that the fixed support can move in the direction of the granite guide rail 1, and simultaneously realizing air floatation contact between the front and back friction air floatation cushions 12 of the friction driving assembly 6 and the two right air floatation blocks 27 in the basic sliding assembly 5, so that the fixed support can drive the air floatation workbench to stably move. The position of the movable bracket 9 is changed by adjusting the mounting screw rod 20 by the mounting rotary handle 19, and the spring 21 is released or pressed, so that the size of the gap between the friction wheel 14 and the sliding guide rail 7 can be adjusted, and the proper gap is adjusted to ensure the stability of the friction driving process. The motor 11 outside the movable support 9 drives the metal friction wheel 14 to contact with the sliding guide rail 7 to generate unidirectional displacement, and the displacement direction can be changed by adjusting the rotation direction of the motor 11, namely the basic sliding component 5 is driven to perform displacement motion along the granite guide rail 1, so that the displacement motion of a detected target along the whole granite guide rail can be realized; the sliding lower table top 31 at the bottom of the one-dimensional sliding workbench 4 is fixedly connected with the main body air floating plate 24 at the top of the basic sliding assembly 5, the measured target 3 or the photogrammetric equipment 2 is respectively arranged on a plurality of array mounting holes on the side surface of the top surface of the sliding upper table top 30, and the one-dimensional relative motion is generated between the sliding upper table top 30 and the sliding lower table top 31 by adjusting the precise differential head 35 at a specific measuring position, so that the requirement of +/-1 mu m manual fine-adjustment precise positioning under various fine-adjustment operation measuring occasions is met.
The above detailed description is intended to illustrate the objects, aspects and advantages of the present invention, and it should be understood that the above detailed description is only exemplary of the present invention and is not intended to limit the scope of the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (3)
1. A lightweight air supporting workbench is characterized in that: comprises a granite guide rail (1), a one-dimensional sliding workbench (4), a basic sliding assembly (5), a friction driving assembly (6) and a sliding guide rail (7); the sliding guide rail (7) is arranged on the side wall of the granite guide rail (1); the one-dimensional sliding workbench (4) is fixed above the basic sliding assembly (5); the friction driving component (6) is fixed on the lower side surface of the basic sliding component (5);
the one-dimensional sliding workbench (4) comprises a sliding guide rail (29), an upper sliding table top (30), a lower sliding table top (31), a fixed sliding block (32), a spiral ejector rod (33), a differential head support (34) and a precise differential head (35); fixedly connecting the sliding lower table top (31) with the top of the main body air floating plate (24); then the sliding guide rail (29) is arranged in a groove at the outer side of the sliding lower table top (31), so that the sliding lower table top (31) and the sliding upper table top (30) slide relatively; a fixed sliding block (32) is arranged at the center of the outer side of the bottom of the upper sliding table board (30), a differential head bracket (34) is arranged at the center of one side end face of the lower sliding table board (31), and the fixed sliding block (32) is connected with the differential head bracket (34) through a spiral ejector rod (33); the precise differential head (35) fixed at the outer end of the spiral ejector rod (33) is used, the spiral ejector rod (33) is rotated to enable the spiral ejector rod to rotate in the inner thread of the differential head bracket (34) to generate left and right displacement, namely, the fixed sliding block (32) connected with the spiral ejector rod is driven to move left and right, and the position adjustment of the sliding upper table top (30) along the one-dimensional direction is completed; fixing a related object to be detected (3) and corresponding detection equipment by sliding a plurality of array mounting holes on the top surface and the side surface of the upper table top (30) to realize a precision measurement process;
the basic sliding assembly (5) comprises a left air floating plate (23), a main body air floating plate (24), a main body air floating surface (25), a right air floating pad (26), a right air floating block (27) and a left air floating pad (28); air floating plates are respectively fixed on two sides below the main air floating plate (24) and respectively comprise a left air floating plate (23) and a right air floating block (27); the inner side wall of the air floating plate is fixedly provided with an air floating cushion which respectively comprises a left air floating cushion (28) and a right air floating cushion (26); after ventilation, the air flotation contact between the top surface and the side surface of the granite guide rail (1) is realized by adjusting the distance between the air flotation cushion and the granite guide rail (1); the left side air floating plate (23) or the right side air floating plate (27) is composed of two air floating blocks which keep a certain distance; the friction driving assembly (6) is arranged in the sliding table, the left air floatation guide contact and the right air floatation guide contact are adjusted by controlling the lateral air floatation distance to be within 1mm, and the integral one-dimensional motion driving of the sliding table is completed under the driving of the friction driving assembly (6);
the friction driving assembly (6) comprises a sliding block (8), a movable support (9), a speed reducer (10), a motor (11), a friction air floating pad (12), a friction air floating frame (13), a friction wheel (14), an output shaft (15), a fixed support (16), a shaft sleeve (17), a tension rod (18), an installation rotating handle (19), an installation screw (20), a spring (21) and a tension screw (22); the whole structure of the fixed support (16) is a convex arched surface, flat parts on two sides are used for mounting two sliding blocks (8), shaft sleeves (17) are mounted in two mounting holes in the top surface of the fixed support (16), a rotating handle (19) and an adjusting mounting screw rod (20) are mounted in threaded holes, the side surface of the fixed support (16) is provided with the threaded holes for mounting the friction air floating frame (13), and an internal square groove formed by the convex arched surface of the fixed support (16) is used for mounting the movable support (9); the fixed support (16) is fixed on the sliding guide rail (7) through two sliding blocks (8), so that the fixed support can realize displacement along the direction of the granite guide rail (1); installing a friction air floating frame (13) at one side of the fixed support (16) close to the granite guide rail (1), and respectively installing a front friction air floating cushion and a rear friction air floating cushion (12); the air floatation contact is realized through the two friction air floatation cushions (12) and the two right side air floatation blocks (27), and the sliding table can be driven to integrally realize one-dimensional movement.
2. The lightweight air bearing table of claim 1, wherein: the movable support (9) is placed in an inner square groove formed by a convex arch surface of a fixed support (16) to move along the direction in the groove, meanwhile, a wear-resistant material shaft sleeve (17) is installed in an installation hole in the fixed support (16), 2 tensioning rods (18) are inserted into the installation hole and penetrate through 2 high-strength springs (21) to be connected with the movable support (9), and a tensioning screw (22) of the movable support (9) is tightened to realize the guiding and fixing function of the movable support (9); after the motor (11) and the speed reducer (10) are assembled, the motor is installed on the outer side of the movable support (9), and a friction wheel (14) made of metal is installed at an output shaft (15) of the speed reducer (10) and is used for being in contact with the sliding guide rail (7) to achieve friction transmission; when the movable support (9) is installed, the position of the installation screw (20) is adjusted by the installation rotating handle (19) in the middle of the fixed support (16) to pull the movable support (9) to the outer side, 2 high-strength springs (21) are compressed, the movable support (9) is placed into the fixed support, the position of the installation screw (20) is adjusted to release the movable support (9) to the inner side, the springs (21) are released, pre-tightening between the friction wheel (14) and the sliding guide rail (7) can be realized under the outward tension of the springs (21), and the stability and reliability of the whole friction driving process are guaranteed.
3. A lightweight air-float table as claimed in claim 1 or 2, wherein: the method for adjusting the distance between the air floating cushion and the granite guide rail (1) comprises the steps of adjusting the distance between the two left air floating cushions (28) and the granite guide rail (1) to realize air floating contact between the top surface and the two left surfaces; at this moment, two right-side air floating blocks (27) are installed at the bottom of the right side of the main air floating plate (24), two right-side air floating pads (26) are additionally installed inside the main air floating plate, air floating contact with the right side face of the granite guide rail (1) is achieved by adjusting the distance between the two right-side air floating pads (26) and the granite guide rail (1) after ventilation, left and right gaps in the operation process of the sliding table can be effectively controlled, and operation precision is improved.
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| CN202111521752.9A CN114290082B (en) | 2021-12-13 | 2021-12-13 | Lightweight air flotation workbench |
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| CN202111521752.9A CN114290082B (en) | 2021-12-13 | 2021-12-13 | Lightweight air flotation workbench |
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| CN114290082B CN114290082B (en) | 2022-11-18 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116967796A (en) * | 2023-09-22 | 2023-10-31 | 无锡星微科技有限公司杭州分公司 | Mobile assembly of air floatation linear platform |
| TWI834579B (en) * | 2023-07-10 | 2024-03-01 | 卓金星 | Alignment stage |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| TWI834579B (en) * | 2023-07-10 | 2024-03-01 | 卓金星 | Alignment stage |
| CN116967796A (en) * | 2023-09-22 | 2023-10-31 | 无锡星微科技有限公司杭州分公司 | Mobile assembly of air floatation linear platform |
| CN116967796B (en) * | 2023-09-22 | 2023-12-29 | 无锡星微科技有限公司杭州分公司 | Mobile assembly of air floatation linear platform |
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| CN114290082B (en) | 2022-11-18 |
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