Air Suspension Support and Motion Guiding Device Having Unequal-Depth Throttling Chambers

Abstract

An air suspension support and motion guiding device having unequal-depth throttling chambers. Throttling plugs (10) are arranged regularly on an air suspension working surface, forming an array of throttling chambers with unequal depths. The invention improves the rotational stiffness per unit area for an air suspension working surface while ensuring support and stability of an air-suspended rail (1) and enables construction of a small-volume, long cantilever, high torque load two-dimensional motion reference device.

Claims

1. An air suspension support and motion guiding device having unequal-depth throttling chambers, comprising an air-suspended rail (1), a U-shaped air suspension bottom plate (2), an air-sealing screw (3), an air suspension cover plate (4), a load unit (5) and a rail base (6), wherein three air suspension working surfaces B, D, and H are provided on the inside of the U-shaped air suspension bottom plate (2), and a plurality of unequal-depth throttling plugs (10) are disposed on the three air suspension working surfaces B, D, and H; corresponding non-working surfaces A, C, and G are provided on the outside of B, D, and H respectively, and a plurality of air-sealing plugs (8) are disposed on the two non-working surfaces A and C; a plurality of through transverse branch air passages (13) are provided between the surfaces A and B as well as between the surfaces C and D, and the air-sealing plugs (8) and the throttling plugs (10) are disposed at exits on both sides of the transverse branch air passage (13); a plurality of through longitudinal branch air passages (12) are provided between surfaces E and F, and end plugs (7) are disposed at exits on both sides of the longitudinal branch air passage (12); a plurality of vertical branch air passages (15) are provided perpendicular to the surface H, and the throttling plug (10) is disposed at an exit on a single side of the vertical branch air passage (15); a vertical main air passage (9) is provided perpendicular to each of surfaces M and N, and a sealing ring (11) is disposed at an exit of the vertical main air passage (9); a transverse main air passage (17) is provided perpendicular to the surface A, and an end plug (7) is disposed at an exit of the transverse main air passage (17); a longitudinal main air passage (16) is provided perpendicular to the surface E, and an end plug (7) is disposed at an exit of the longitudinal main air passage (16); and an air inlet passage (14) is provided perpendicular to the surface C; the air inlet passage (14) is communicated with, and is perpendicular to, the longitudinal main air passage (16), the longitudinal main air passage (16) is communicated with, and is perpendicular to, the vertical main air passage (9), the vertical main air passage (9) is communicated with, and is perpendicular to, the transverse main air passage (17), the vertical main air passage (9) and the transverse main air passage (17) are communicated with, and are perpendicular to, the longitudinal branch air passage (12), and the longitudinal branch air passage (12) is communicated with, and is perpendicular to, the transverse branch air passage (13) and the vertical branch air passage (15); that is, a high-pressure gas enters from the air inlet passage (14), passes through the longitudinal main air passage (16), the vertical main air passage (9), the transverse main air passage (17), and the longitudinal branch air passage (12) successively, and finally enters the air suspension working surfaces B, D, and H via the throttling plugs (10) disposed on the vertical main air passage (9) and the transverse main air passage (17); and the air-sealing screw (3) connects the U-shaped air suspension bottom plate (2) with the air suspension cover plate (4), the load unit (5) is disposed on the air suspension cover plate (4), and the rail (1) is disposed in a force sealed air suspension support and motion guiding structure formed by the U-shaped air suspension bottom plate (2) and the air suspension cover plate (4); and during working, the air-suspended rail (1) is fixed by the rail base (6), and the U-shaped air suspension bottom plate (2), the air suspension cover plate (4) and the load unit (5) move along the air-suspended rail (1).

2. The air suspension support and motion guiding device having unequal-depth throttling chambers according to claim 1, wherein the plurality of unequal-depth throttling plugs (10) are disposed on the three air suspension working surfaces B, D, and H, forming a plurality of unequal-depth chambers regularly distributed on the working surfaces B, D, and H.

3. The air suspension support and motion guiding device having unequal-depth throttling chambers according to claim 1, wherein the numbers of the longitudinal branch air passage (12), the transverse branch air passage (13) and the vertical branch air passage (15) change regularly with the area of the working surfaces B, D, and H, and the numbers of the air-sealing plug (8) and the throttling plug (10) change regularly with the numbers of the longitudinal branch air passage (12), the transverse branch air passage (13) and the vertical branch air passage (15).

4. The air suspension support and motion guiding device having unequal-depth throttling chambers according to claim 1, wherein the material hardness of the throttling plug (10) is greater than that of the U-shaped air suspension bottom plate (2) and the air suspension cover plate (4); for example, the throttling plug (10) adopts copper alloy CuZn20Al2, and the U-shaped air suspension bottom plate (2) and the air suspension cover plate (4) adopt anode aluminum alloy AlZnMgCu1.5.

Description

BRIEF DESCRIPTION OF FIGURES

[0021] FIG. 1 is a schematic diagram of an air suspension support and motion guiding device having unequal-depth throttling chambers.

[0022] FIG. 2 is a schematic diagram of a U-shaped air suspension bottom plate.

[0023] FIG. 3 is a front view of the U-shaped air suspension bottom plate.

[0024] FIG. 4 is a cross-sectional view of a vertical branch air passage of the U-shaped air suspension bottom plate.

[0025] FIG. 5 is a cross-sectional view of a longitudinal branch air passage of the U-shaped air suspension bottom plate.

[0026] In the drawings, 1 denotes an air-suspended rail; 2 denotes a U-shaped air suspension bottom plate; 3 denotes an air-sealing screw; 4 denotes an air suspension cover plate; 5 denotes a load unit; 6 denotes a rail base; 7 denotes an end plug; 8 denotes an air-sealing plug; 9 denotes a vertical main air passage; 10 denotes a throttling plug; 11 denotes a seal ring; 12 denotes a longitudinal branch air passage; 13 denotes a transverse branch air passage; 14 denotes an air inlet passage; 15 denotes a vertical branch air passage; 16 denotes a longitudinal main air passage; and 17 denotes a transverse main air passage.

DETAILED DESCRIPTION

[0027] Embodiments of the invention are described in detail below with reference to the accompanying drawings.

[0028] Referring to FIG. 1, an air suspension support and motion guiding device having unequal-depth throttling chambers includes an air-suspended rail 1, a U-shaped air suspension bottom plate 2, an air-sealing screw 3, an air suspension cover plate 4, a load unit 5 and a rail base 6. The air-sealing screw 3 connects the U-shaped air suspension bottom plate 2 with the air suspension cover plate 4, the load unit 5 is disposed on the air suspension cover plate 4, and the rail 1 is disposed in a force sealed air suspension support and motion guiding structure formed by the U-shaped air suspension bottom plate 2 and the air suspension cover plate 4. During working, the air-suspended rail 1 is fixed by the rail base 6, and the U-shaped air suspension bottom plate 2, the air suspension cover plate 4 and the load unit 5 move along the air-suspended rail 1.

[0029] Referring to FIG. 2 to FIG. 5, three air suspension working surfaces B, D, and H are provided on the inside of the U-shaped air suspension bottom plate 2, and a plurality of unequal-depth throttling plugs 10 are disposed on the three air suspension working surfaces B, D, and H. Corresponding non-working surfaces A, C, and G are provided on the outside of B, D, and H respectively, and a plurality of air-sealing plugs 8 are disposed on the two non-working surfaces A and C. A plurality of through transverse branch air passages 13 are provided between the surfaces A and B as well as between the surfaces C and D, and the air-sealing plugs 8 and the throttling plugs 10 are disposed at exits on both sides of the transverse branch air passage 13. A plurality of through longitudinal branch air passages 12 are provided between surfaces E and F, and end plugs 7 are disposed at exits on both sides of the longitudinal branch air passage 12. A plurality of vertical branch air passages 15 are provided perpendicular to the surface H, and the throttling plug 10 is disposed at an exit on a single side of the vertical branch air passage 15. A vertical main air passage 9 is provided perpendicular to each of surfaces M and N, and a sealing ring 11 is disposed at an exit of the vertical main air passage 9. A transverse main air passage 17 is provided perpendicular to the surface A, and an end plug 7 is disposed at an exit of the transverse main air passage 17. A longitudinal main air passage 16 is provided perpendicular to the surface E, and an end plug 7 is disposed at an exit of the longitudinal main air passage 16. An air inlet passage 14 is provided perpendicular to the surface C.

[0030] The air inlet passage 14 is communicated with, and is perpendicular to, the longitudinal main air passage 16, the longitudinal main air passage 16 is communicated with, and is perpendicular to, the vertical main air passage 9, the vertical main air passage 9 is communicated with, and is perpendicular to, the transverse main air passage 17, the vertical main air passage 9 and the transverse main air passage 17 are communicated with, and are perpendicular to, the longitudinal branch air passage 12, and the longitudinal branch air passage 12 is communicated with, and is perpendicular to, the transverse branch air passage 13 and the vertical branch air passage 15. That is, a high-pressure gas enters from the air inlet passage 14, passes through the longitudinal main air passage 16, the vertical main air passage 9, the transverse main air passage 17, and the longitudinal branch air passage 12 successively, and finally enters the air suspension working surfaces B, D, and H via the throttling plugs 10 disposed on the vertical main air passage 9 and the transverse main air passage 17.

[0031] The plurality of unequal-depth throttling plugs 10 are disposed on the three air suspension working surfaces B, D, and H, forming a plurality of unequal-depth chambers regularly distributed on the working surfaces B, D, and H.

[0032] The numbers of the longitudinal branch air passage 12, the transverse branch air passage 13 and the vertical branch air passage 15 change regularly with the area of the working surface B, D, and H, and the numbers of the air-sealing plug 8 and the throttling plug 10 change regularly with the numbers of the longitudinal branch air passage 12, the transverse branch air passage 13 and the vertical branch air passage 15.

[0033] The material hardness of the throttling plug 10 is greater than that of the U-shaped air suspension bottom plate 2 and the air suspension cover plate 4. For example, the throttling plug 10 adopts copper alloy CuZn20Al2, and the U-shaped air suspension bottom plate 2 and the air suspension cover plate 4 adopt anode aluminum alloy AlZnMgCu1.5.