CN104454985A - Holding structure between air bearing and adjustment member - Google Patents

Abstract

The invention provides a holding structure between an air bearing and an adjusting piece, which comprises an air bearing; an adjusting piece, which is provided with a shaft part, and a combining end is positioned at one axial end of the shaft part; the holding part has one elastic holding body fixed on the air bearing, one shaft hole penetrating the holding body and coaxial with the combining end, and the shaft hole has hole diameter capable of being changed via the elastic deformation of the holding body.

Description

Holding structure between air bearing and adjustment member

technical field

The present invention relates to an air bearing, in particular to a retaining structure between an air bearing and an adjustment member.

Background technique

By the way, as the parts of high-tech products are moving towards precision and miniaturization, the requirements for positioning accuracy of the working platform are relatively higher and higher. In order to achieve high precision, currently, a linear motor is used to directly drive a working platform to improve machining accuracy and quickly achieve positioning. However, when the linear motor drives the working platform to move, the joint surface between the working platform and a guide rail will be interfered by frictional force during the actuation process, and the overall stability and precision will be reduced.

Please refer to Fig. 1 and Fig. 2, the prior art discloses that the air bearing 1 is set on the working platform 2, and then directly cooperates with the linear motor to actuate, wherein, there is an air bearing 1 between the joint surface 3 of the guide rail. The gap 4 allows the air bearing 1 to float on it, so that the working platform 2 and the guide rail joint surface 3 do not need to be in direct contact, so as to effectively reduce the friction between the work platform 2 and the guide rail joint surface 3 .

At the same time, since there is no direct contact between the air bearing 1 and the joint surface 4 of the guide rail, there is no need for lubrication, and the surface will not wear, which can increase the service life, and make the vibration and noise generated during operation small, and can also greatly improve Stability in use.

Among them, the existing technology is used to connect the air bearing 1 and the working platform 2. Generally, the adjusting bolt 5 is screwed on the working platform 2, and then the end is pivoted on the air bearing 2 so that the air bearing 1 can be firmly located between the working platform 2 and the joint surface 3 of the guide rail. However, because these joint technologies make the joint between the adjustment bolt 5 and the air bearing 1 fixed, additional disassembly between the two will be required. Or assembly, which will only increase the inconvenience of maintenance. In addition, there is also a pivotal joint structure between the adjustment bolt 5 and the air bearing 1, which does not have a proper combination of the two. , even if the adjustment bolt 5 is easily separated from the air bearing 1, especially when the axial direction of the adjustment bolt 5 is parallel to the direction of gravity, when the air bearing 1 is assembled under the adjustment bolt 5, it will immediately fall due to the action of gravity, It only increases the difficulty and inconvenience of assembly.

Contents of the invention

The purpose of the present invention is to provide a retaining structure between the air bearing and the adjustment member, which can facilitate the combination and separation of the air bearing and the adjustment member, so that the assembly and maintenance operations are more convenient.

To achieve the above object, the present invention takes the following technical solutions:

The retaining structure between the air bearing and the adjusting member provided by the present invention includes an air bearing; an adjusting member has a shaft portion, and a joint end is located at one axial end of the shaft portion; it further includes a retaining member with a An elastic holding body is fixed on the air bearing, and a shaft hole is arranged on the holding body, and is inserted coaxially with the coupling end, so that the diameter of the shaft hole can be adjusted by the elastic deformation of the holding body. Change, so that the shaft can be axially moved in the shaft hole by an external force between an engaged position and a withdrawn position. When located at the engaged position, the inner diameter of the shaft hole is smaller than the peripheral side of the coupling end The maximum outer diameter of the coupling end is used to make the peripheral side of the coupling end clip on the hole wall of the shaft hole, and when it is in the withdrawn position, the internal diameter of the shaft hole is the same as the maximum external diameter of the coupling end peripheral side Similarly, it is used to make the joint end detachable from the shaft hole and separate from the holder.

Wherein, the adjusting member has a locking groove, which is recessed on the circumferential surface of the coupling end, and when the shaft portion is at the engaging position, the inner groove wall of the locking groove is in close contact with the hole wall of the shaft hole. connected, so that the adjusting piece is snapped onto the holding piece.

Wherein, the holding body is an elastic O-ring.

Wherein, the holding body is a C-shaped buckle.

Wherein, the retainer further includes a fixing part fixedly connected to the air bearing, and the retainer clip is set between the fixing part and the air bearing, a perforation with an inner diameter larger than the maximum outer diameter of the coupling end, and The shaft hole is coaxially and communicated with the fixing part.

Wherein, both the fixing part and the holding body are in the shape of a sheet.

Wherein, the holding body is an elastic body made of polymer material.

Wherein, the holding body is an elastic body made of silica gel.

The beneficial effects of the present invention are: the air bearing of the present invention can be properly positioned through the combination of the elastic retainer and the adjustment member, and at the same time, the deformation provided by the elasticity of the retainer makes the air bearing The separation from the adjusting member can be separated by simple operation and slight application of force, which is helpful for maintenance work.

Description of drawings

Fig. 1 is a schematic cross-sectional view of the prior art.

Fig. 2 is a schematic plan view of assembly in the prior art.

Fig. 3 is a three-dimensional assembled view of the first preferred embodiment of the present invention.

Fig. 4 is an exploded perspective view of the first preferred embodiment of the present invention.

Fig. 5 is a cross-sectional view of the first preferred embodiment of the present invention along the section line 5-5 in Fig. 3 .

Fig. 6 is a three-dimensional assembled view of the first preferred embodiment of the present invention.

Fig. 7 is an exploded perspective view of the first preferred embodiment of the present invention.

Fig. 8 is a cross-sectional view of the first preferred embodiment of the present invention along the section line 8-8 in Fig. 6 .

Fig. 9 is a three-dimensional assembled view of the first preferred embodiment of the present invention.

Fig. 10 is an exploded perspective view of the first preferred embodiment of the present invention.

Fig. 11 is a cross-sectional view of the first preferred embodiment of the present invention along the line 11-11 in Fig. 9 .

Reference numerals: 1: air bearing; 2: working platform; 3: joint surface of guide rail; 4: air gap; 5: adjusting bolt; 10: retaining structure between air bearing and adjustment member; 20: air bearing; 21, 21 ', 21": body; 22: ball socket; 30: adjustment piece; 31: shaft; 32: coupling end; 321: ball end; 33: slot; 40: holder; 41, 41', 41" : holding body; 42: shaft hole; 43: fixed part; 44, 44', 44": perforation.

Detailed ways

First of all, please refer to Fig. 3 to Fig. 6, in the first preferred embodiment of the present invention, the air bearing and the retaining structure 10 between the adjusting member mainly include an air bearing 20, an adjusting member 30 and a retaining structure 10. 40 pieces.

The air bearing 20 is used to guide the flow of external high-pressure gas so as to form an air gap between the air bearing 20 and the plane of the guide rail, so that the prior art can move without friction, but the present invention In other words, the technical content of the air bearing 20 for guiding the flow of gas has nothing to do with the technical features of the present invention, so in the drawings or text descriptions of this case, there is no specific technology for guiding the flow of gas. The content is explained, and it is a prior art that is known to those with ordinary knowledge in the technical field of the present invention when the patent is applied for in this case, but within the scope of the necessary technical content of the air bearing 20 in the present invention, in This still needs to be explained. In other words, the air bearing 20 has a cylindrical body 21 with a proper thickness, and a ball socket 22 is recessed on the center of curvature of the axial end of the body 21 .

The adjustment member 30 is used to be screwed and fixed on an existing platform, and is connected with the air bearing 20, so that the air bearing 20 can be combined with the existing platform. Generally speaking, the adjustment member 30 has a A screw-shaped shaft portion 31 of appropriate length is screwed on the existing platform with one end, and a joint end 32 is located at the other axial end of the shaft portion 31 for connecting with the air bearing 20, and the joint end The end of 32 is an arc-shaped ball end 321, so that it can abut against the ball socket 22, so that the relative rotation between the air bearing 20 and the adjustment member 30 is not limited by the angle, and an annular slot 33 It is recessed on the peripheral side of the coupling end, and has an appropriate distance from the ball end 321, wherein suitably, when the ball end 321 is embedded in the ball socket 22, the locking groove 33 is located The position is located outside the end surface of one axial end of the body 21 .

The retainer 40 has a sheet-shaped retainer 41 made of elastic polymer material such as silica gel, the thickness of which is similar to the width of the slot 33, and one side is attached to the body 21 in the axial direction. On the surface of one end, a shaft hole 42 with an inner diameter similar to the outer diameter of the coupling end 32 where the locking groove 33 is located penetrates through the holding body 41 , and abuts against the inner groove wall of the locking groove 33 with the hole wall , so that the holding body 41 and the coupling end 32 are engaged with each other, and the one-piece fixing part 43 is attached to the other side surface of the holding body 41, and is screwed and combined with the main body by an appropriate fixing element 21 , a through hole 44 runs through the fixing portion 43 and is coaxially corresponding to the shaft hole 42 , and the diameter of the hole is larger than the maximum outer diameter of the coupling end 32 .

Through the composition of the above-mentioned components, the joint end 32 can pass through the through hole 44 without hindrance, and the inner diameter of the shaft hole 42 can be changed by the deformation of the retaining body 41 to achieve the following: The hole wall of the shaft hole 42 is elastically engaged in the combined state of the engaging groove 33. In other words, even if the shaft portion 41 is subjected to an external force, it can be in an engaged position and a withdrawn position in the shaft hole 42. When it is located at the engaged position, the inner diameter of the shaft hole 42 is smaller than the maximum outer diameter of the coupling end 32, which is similar to the minimum outer diameter of the card slot 33, so that the card The hole wall of the groove 33 and the shaft hole 42 is engaged with each other, and when located at the withdrawn position, the inner diameter of the shaft hole 42 is similar to the maximum outer diameter of the joint end 32, so that the joint end 32 is extracted from the shaft hole 42 and separated from the retainer 40 .

In this way, the air bearing 20 can be properly positioned by combining with the adjusting member 30 through the elastic holding body 41 , and at the same time, the air bearing 20 can be deformed by the elasticity of the holding body 41 . The separation from the adjustment member 30 can be separated by simple operation and slight force application, which is helpful for the maintenance work and effectively improves the deficiency of the prior art.

In other words, as far as the main technical feature of the present invention is concerned, the deformation allowed by the holding body 41 causes the hole diameter of the shaft hole 42 to change, so as to achieve the effect of elastically combining with the adjustment room 30 and facilitating separation. Therefore, under this technical feature, what is disclosed in the aforementioned first preferred embodiment is only an example, and another preferred implementation as shown in Figures 6 to 8, or Figures 9 to 11 can also be achieved For example, the holding body 41', 41" is formed by an elastic O-ring or a metal C-shaped buckle that allows deformation, and is embedded in the body 21', 21", so that the through hole 44', 44" directly Formed on one end surface of the body 21', 21" in the axial direction, according to this, the specific technical content disclosed in the second and third preferred embodiments can also achieve the same as that achieved in the first preferred embodiment Same effect.

Claims (8)

1. the maintenance structure between pneumatic bearing and adjustment piece, it comprises:

One pneumatic bearing;

One adjustment piece, has an axle portion, and a binding end is positioned at one end of this axle portion axis;

It is characterized in that, more comprise

One holder, there is the flexible holder of a tool, be fixedly arranged in this pneumatic bearing, one axis hole provides in this holder, and coaxially wear with this binding end, and the aperture of this axis hole is changed by the elastic strain of this holder, make this axle portion can detach between position in an engaging and one in this axis hole by external force according to this to move axially, when being positioned on this clamped position, the internal diameter of this axis hole is less than the maximum outside diameter of this binding end week side, be connected on the hole wall of this axis hole in order to make all sides of this binding end, and when being positioned at this and detaching on position, the internal diameter of this axis hole then with this in binding end week side maximum outside diameter similar, be separated with this holder in order to make this binding end can detach from this axis hole.

2. the maintenance between pneumatic bearing according to claim 1 and adjustment piece constructs, it is characterized in that, described adjustment piece has a draw-in groove, recessed on all side ring surfaces of described binding end, when described axle portion is positioned on described clamped position, the inner side cell wall of described draw-in groove and the hole wall of described axis hole are amplexiformed, makes this adjustment piece be connected on described holder according to this.

3. the maintenance between pneumatic bearing according to claim 1 and 2 and adjustment piece constructs, and it is characterized in that, described holder is a tool flexible O shape ring.

4. the maintenance between pneumatic bearing according to claim 1 and 2 and adjustment piece constructs, and it is characterized in that, described holder is a C shape button.

5. the maintenance between pneumatic bearing according to claim 1 and 2 and adjustment piece constructs, it is characterized in that, described holder more includes a fixing part, be fixed in described pneumatic bearing, and described holder sandwiched is positioned between described fixing part and this pneumatic bearing, one internal diameter is greater than the perforation of described binding end maximum outside diameter, with described axis hole coaxial communication be arranged on this fixing part.

6. the maintenance between pneumatic bearing according to claim 5 and adjustment piece constructs, and it is characterized in that, described fixing part and described holder are all in the form of sheets.

7. the maintenance between pneumatic bearing according to claim 6 and adjustment piece constructs, and it is characterized in that, described holder is for the elastomer made by macromolecular material.

8. the maintenance between pneumatic bearing according to claim 6 and adjustment piece constructs, and it is characterized in that, described holder is for the elastomer made by silica gel.