Glue overflow prevention air bearing

Abstract

The utility model discloses an anti-glue-overflow air bearing which comprises a porous throttler and a bearing device arranged at the bottom of the porous throttler. The porous throttler comprises a base plate and a plurality of positioning convex blocks arranged on the base plate at intervals. The arrangement direction of the multiple positioning protruding blocks is parallel to the side edge of the base plate, and the extending direction of the multiple positioning protruding blocks is perpendicular to the side edge of the base plate. The bearing device comprises a base, a bearing boss arranged at the bottom of the inner side of the base, a plurality of bearing protruding blocks arranged in the base at intervals and a ventilation groove formed between the bearing protruding blocks. The base comprises a vent hole formed in the outer side of the base. According to the glue overflow prevention air bearing, the porous throttler is rapidly installed on the bearing device through the positioning protruding block arranged on the base plate, and meanwhile the positioning protruding block also prevents glue from blocking the porous throttler.

Description

Technical Field

[0001] The utility model relates to the field of machinery, in particular to an anti-overflow glue air bearing. Background Art

[0002] With the development of gas lubrication technology, gas hydrostatic bearings have important applications in precision and ultra-precision engineering, micro-engineering and other fields due to their significant advantages such as long life, high precision, low loss, good damping characteristics, wide speed range and easy processing. Gas hydrostatic bearings, in terms of throttling forms, include small hole throttling, annular throttling, slit throttling, porous throttling, etc. Among them, the porous throttling device makes the air pressure distribution in the air bearing more uniform and the airway in the bearing structure simpler due to the dense microporous structure of the material itself. Compared with the traditional small hole throttling method, porous throttling makes the air bearing have higher load-bearing capacity and stiffness, and has better damping characteristics when impacted.

[0003] However, in the actual application of porous gas hydrostatic bearings, too much or too little glue on the bonding surface can easily clog the porous throttle, thereby affecting the working efficiency of the porous gas hydrostatic bearing. In actual production, there is an air bearing, in which gaps are left between the inner sides of the base structure and the porous throttle, and no positioning device is provided on the air bearing. If less glue is provided, the gaps on both sides of the air bearing base structure are different in size, so that the bonding strength between the porous throttle and the air bearing base structure is insufficient, and the porous throttle is easily separated from the air bearing base structure after ventilation. If too much glue is provided, the overflowing glue is easy to block the porous throttle along the contact surface between the porous throttle and the air, thereby reducing the working efficiency and service life of the porous throttle. Utility Model Content

[0004] In view of this, the utility model provides an anti-overflow glue air bearing which can solve the above-mentioned problem.

[0005] An anti-overflow glue air bearing comprises a porous throttle and a receiving device arranged at the bottom of the porous throttle. The porous throttle comprises a substrate and a plurality of positioning protrusions arranged at intervals on the substrate. The setting direction of the plurality of positioning protrusions is parallel to the side of the substrate, and the extension direction of the plurality of positioning protrusions is perpendicular to the side of the substrate. The receiving device comprises a base, a receiving boss arranged at the bottom of the inner side of the base, and a plurality of receiving protrusions arranged at intervals in the base. The receiving boss is arranged around the inner side wall of the base. The receiving protrusions are arranged at intervals from the receiving bosses. The height of the receiving protrusion on the base is equal to the height of the receiving protrusion on the base. The positioning protrusion is stuck between two receiving protrusions.

[0006] Furthermore, any side surface of the positioning protrusion is spaced apart from any side surface of the substrate.

[0007] Furthermore, the receiving device also includes a ventilation groove arranged between the receiving protrusions.

[0008] Furthermore, the base includes a vent hole arranged on the outside of the base, the vent hole communicates with the outside of the base and the breathable groove, and is arranged on the side surface of the base perpendicular to the extension direction of the positioning protrusion.

[0009] Furthermore, the height of the receiving boss is greater than the height of the positioning protrusion.

[0010] Furthermore, the arrangement direction of the plurality of receiving protrusions is parallel to the arrangement direction of the positioning protrusions, and the extension direction of the receiving protrusions is parallel to the extension direction of the positioning protrusions.

[0011] Furthermore, the distance between two adjacent receiving protrusions is equal to the width of the positioning protrusion.

[0012] Furthermore, the gaps between the porous throttle and the inner wall of the receiving device are fixed and equal in size.

[0013] Compared with the prior art, the anti-overflow glue air bearing provided by the utility model is provided with a positioning protrusion on the porous throttle to quickly install the porous throttle on the receiving device. At the same time, the positioning protrusion prevents the overflowing glue from blocking the porous throttle along the edge of the substrate, so that the overflowing glue flows along the positioning protrusion to the air permeable groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic structural diagram of the anti-glue overflow air bearing provided by the utility model.

[0015] Figure 2 A cross-sectional view of an anti-overflow glue air bearing is provided for the utility model.

[0016] Figure 3 for Figure 1 Schematic diagram of the structure of a porous restrictor.

[0017] Figure 4 for Figure 1 A structural schematic diagram of a receiving device. DETAILED DESCRIPTION

[0018] The following is a further detailed description of the specific embodiments of the present invention. It should be understood that the description of the embodiments of the present invention herein is not intended to limit the protection scope of the present invention.

[0019] See also Figures 1 to 4 , which is a schematic diagram of the structure of an anti-overflow glue air bearing provided by the utility model. The anti-overflow glue air bearing includes a porous throttle 10 and a receiving device 20 arranged at the bottom of the porous throttle 10. It can be imagined that the anti-overflow glue air bearing also includes some other modules, such as mounting grooves, etc., which are well known to those skilled in the art and will not be described in detail here.

[0020] The porous throttle 10 includes a substrate 11 and a plurality of positioning protrusions 12 spaced apart on the substrate 11. The porous throttle 10 is used to throttle and regulate the gas input into the anti-overflow glue air bearing so that the gas forms a thin film and is evenly distributed on the anti-overflow glue air bearing, providing a stable suspension force or adsorption force for the load.

[0021] The substrate 11 is in the shape of a cuboid. The substrate 11 is made of porous material. The porous material used in the anti-overflow glue air bearing has different gas permeability coefficients, and the working efficiency of the porous throttle is different. In this embodiment, the material used for the porous throttle 10 is graphite, preferably isotropic porous graphite processed by cold isostatic pressing, which has all the characteristics of general graphite, and the material structure is uniform and dense, and the pore distribution is uniform. In actual production applications, it is easy to process and has strong antioxidant ability. The length and width of the substrate 11 are smaller than the length and width of the inner wall of the receiving device 20, so that a gap is left between the porous throttle 10 and the receiving device 20 after installation. The gap is used to accommodate overflowing glue. When the glue in the gap dries, the bonding strength between the porous throttle 10 and the receiving device 20 increases.

[0022] The positioning protrusions 12 are arranged in a rectangular shape. The arrangement direction of the plurality of positioning protrusions 12 is parallel to the side of the substrate 11, and the extension direction of the plurality of positioning protrusions 12 is perpendicular to the side of the substrate 11. Any side of the positioning protrusions 12 is arranged at intervals from any side of the substrate 11, leaving enough bonding space for the substrate 11 to increase the bonding strength of the anti-overflow glue air bearing. The positioning protrusions 12 are used for rapid positioning on the receiving device 20, so as to achieve rapid installation of the porous throttle 10 and the receiving device 20.

[0023] The receiving device 20 includes a base 21 , a receiving boss 22 disposed at the inner bottom of the base 21 , a plurality of receiving protrusions 23 disposed at intervals in the base 21 , and a venting groove 24 disposed between the receiving protrusions 23 .

[0024] The base 21 includes a vent hole 211 disposed on the outside of the base 21. The base body 21 is a rectangular parallelepiped, and the base body 21 is used to receive the substrate 11.

[0025] The vent hole 211 communicates with the outside of the base 21 and the vent groove 24, and is disposed on the side of the base 21 perpendicular to the extending direction of the positioning protrusion 12. The vent hole 211 is used to control the positive pressure or negative pressure gas input into the anti-overflow glue air bearing.

[0026] The receiving boss 22 is disposed around the inner wall of the base 21 and is used to install the porous throttle 10. The height of the receiving boss 22 is greater than the height of the positioning protrusion 12, so as to increase the contact area between the porous throttle 10 and the positive pressure or negative pressure gas in the anti-overflow glue air bearing, so as to increase the working efficiency of the anti-overflow glue air bearing.

[0027] The receiving protrusion 23 is spaced apart from the receiving boss 22. The height of the receiving protrusion 23 on the base 21 is equal to the height of the receiving boss 22 on the base 21, so as to receive the porous throttle 10 and reduce the amount of overflow glue that penetrates the porous throttle 10. The arrangement direction of the plurality of receiving protrusions 23 is parallel to the arrangement direction of the positioning protrusions 12, and the extension direction of the receiving protrusions 23 is parallel to the extension direction of the positioning protrusions 12, so as to facilitate the positioning of the positioning protrusions 12. The spacing between two adjacent receiving protrusions 23 is equal to the width of the positioning protrusions 12, so that the positioning protrusions 12 can be just stuck between the two receiving protrusions 23, thereby ensuring that the position of the substrate 11 on the receiving device 20 is fixed and located in the center. The porous throttle 10 is positioned on the receiving device 20, so that the gap sizes between the porous throttle 10 and the inner walls of the receiving device 20 are fixed and equal, which helps to make the bonding strength of the gaps on both sides of the receiving device 20 the same, thereby increasing the installation strength of the porous throttle 10 and the receiving device 20.

[0028] The vent grooves 24 are formed by cutting the receiving protrusions 23, and are arranged between the receiving protrusions 23 and between the receiving protrusions 23 and the receiving bosses 22, so that the vent grooves 24 are interconnected. Positive or negative pressure gas enters the pores of the base 10 through the vent grooves 24, and provides suspension force for the supported object under the throttling control of the porous structure of the base 10, which should be the existing technology and will not be described in detail here.

[0029] During installation, the positioning protrusion 12 and the receiving protrusion 23 confirm the positions with each other, so that the porous throttle 10 can be quickly installed on the receiving device 20, and the gaps on both sides of the receiving device 20 and the porous throttle are of equal size. The porous throttle 10 is bonded to the receiving boss 22 of the receiving device 20 and the inner wall of the receiving device 20, and the glue overflowing on one side is stored in the gap along the inner wall of the base 21. After the glue is dried, the receiving device 20 and the porous throttle 10 are bonded to increase their bonding strength. The glue overflowing on the other side flows along the side of the positioning protrusion 12 to the air permeable groove 24, preventing the overflowing glue from flowing along the substrate 11, and preventing the contact surface of the porous throttle 10 with the positive pressure or negative pressure gas from being blocked.

[0030] Compared with the prior art, the anti-overflow glue air bearing provided by the utility model is provided with a positioning protrusion 12 on the porous throttle 10, so that the porous throttle 10 can be quickly installed on the receiving device 20. At the same time, the positioning protrusion 12 prevents the overflowing glue from blocking the porous throttle along the edge of the substrate 10, so that the overflowing glue flows along the positioning protrusion 12 to the air permeable groove 24.

[0031] The above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any modification, equivalent substitution or improvement within the spirit of the present invention are included in the scope of the claims of the present invention.

Claims

1. An anti-overflow air bearing, characterized in that: The anti-overflow glue air bearing includes a porous throttle and a receiving device arranged at the bottom of the porous throttle, the porous throttle includes a substrate, a plurality of positioning protrusions arranged at intervals on the substrate, the setting direction of the plurality of positioning protrusions is parallel to the side of the substrate, and the extension direction of the plurality of positioning protrusions is perpendicular to the side of the substrate, the receiving device includes a base, a receiving boss arranged at the bottom inner side of the base, a plurality of receiving protrusions arranged at intervals in the base, the receiving boss is arranged around the inner side wall of the base, the receiving protrusions are arranged at intervals from the receiving bosses, the height of the receiving protrusion on the base is equal to the height of the receiving boss on the base, and the positioning protrusion is stuck between the two receiving protrusions.

2. The anti-overflow glue air bearing according to claim 1, characterized in that: Any side surface of the positioning protrusion is spaced apart from any side surface of the substrate.

3. The anti-overflow glue air bearing according to claim 1, characterized in that: The receiving device also includes a ventilation groove arranged between the receiving protrusions.

4. The anti-overflow glue air bearing according to claim 3, characterized in that: The base includes a vent hole arranged on the outside of the base, the vent hole communicates with the outside of the base and the vent groove, and is arranged on the side surface of the base perpendicular to the extending direction of the positioning protrusion.

5. The anti-overflow glue air bearing according to claim 1, characterized in that: The height of the receiving boss is greater than the height of the positioning protrusion.

6. The anti-overflow glue air bearing according to claim 1, characterized in that: The arrangement direction of the plurality of receiving protrusions is parallel to the arrangement direction of the positioning protrusions, and the extension direction of the receiving protrusions is parallel to the extension direction of the positioning protrusions.

7. The anti-overflow glue air bearing according to claim 1, characterized in that: The distance between two adjacent receiving protrusions is equal to the width of the positioning protrusion.

8. The anti-overflow glue air bearing according to claim 1, characterized in that: The gaps between the porous throttle and the inner wall of the receiving device are fixed and equal in size.

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