1. A double-shaft air-floating platform is characterized in that: the double-shaft air floating platform comprises a first guide rail and a second guide rail which are vertically arranged in the horizontal direction, a first slide carriage which is arranged on two sides of the extension direction of the first guide rail, a second slide carriage which is arranged on two sides of the extension direction of the second guide rail, an air inflation assembly which is used for forming an air film between the first slide carriage and the first guide rail as well as between the second slide carriage and the second guide rail, a first driving motor and a first grating ruler which are arranged on the first guide rail, a second driving motor and a second grating ruler which are arranged on the second guide rail, and an installation platform, wherein the first guide rail is arranged above the second guide rail in the vertical direction, the side edges of the first guide rail and the second guide rail are obliquely arranged in the vertical direction, the first slide carriage is fixedly connected with the second slide carriage, the installation platform is fixed on the first guide rail, and the first driving motor is used for driving the first guide rail to move relative to the first slide carriage, the second driving motor is used for driving the second slide carriage to move relative to the second guide rail.

2. The dual-axis air bearing platform of claim 1, wherein: the lower surface of first guide rail is upwards concave and is equipped with first mounting groove, first driving motor with first grating chi sets up in the first mounting groove, the upper surface of second guide rail is downwards concave and is equipped with the second mounting groove, second driving motor with second grating chi sets up in the second mounting groove.

3. The dual-axis air bearing platform of claim 1, wherein: the double-shaft air floatation platform further comprises a connecting plate, wherein the connecting plate is arranged between the first slide carriage and the second slide carriage and fixedly connected with the first slide carriage and the second slide carriage.

4. The dual-axis air bearing platform of claim 3, wherein: the inflation assembly is connected with the first slide carriage and the second slide carriage through air pipes to provide air, and the air pipes are arranged in the connecting plate.

5. The dual-axis air bearing platform of claim 3, wherein: biax air supporting platform still includes the dustless tow chain of flexibility, the connection that is used for connecting the power the cable of the dustless tow chain of flexibility, the cable is connected respectively first guide rail with the second guide rail, the one end of connecting plate is equipped with the edge first guide rail extending direction runs through the receipts wire casing that sets up, the cable sets up receive in the wire casing.

6. The dual-axis air bearing platform of claim 1, wherein: the two ends of the second guide rail are provided with limit baffles to limit the position of the second slide carriage, and the double-shaft air floating platform further comprises an organ cover which is connected with the second slide carriage and the limit baffles to cover the second guide rail.

7. An aerostatic multi-axis machine tool, characterized in that: the aerostatic multi-axis machine tool comprises a base, a vertical column arranged on the base and extending upwards in the vertical direction, a double-axis air floating platform according to any one of claims 1 to 6, and a vertical air floating platform arranged on the vertical column, wherein the double-axis air floating platform is arranged on the base.

8. The aerostatic, multi-axis machine of claim 7, wherein: the vertical air floatation platform comprises a third guide rail extending in the vertical direction, a third slide carriage arranged on two sides of the extension direction of the third guide rail, a third driving motor arranged on the third guide rail and used for driving the third guide rail to move, and a third grating ruler arranged on the third guide rail, wherein an air film is formed between the third slide carriage and the third guide rail by an air inflation assembly, and the side edge of the third guide rail is obliquely arranged in the horizontal direction.

9. The aerostatic, multi-axis machine of claim 8, wherein: the vertical air floatation platform further comprises counterweight cylinders arranged on two sides of the third slide carriage, a fixed slide carriage arranged on one side of the third guide rail along the horizontal direction, and an end baffle arranged at the upper end of the third guide rail, wherein the fixed slide carriage is fixed with the third slide carriage, and the counterweight cylinders are fixedly connected with the fixed slide carriage and the end baffle.

10. The aerostatic, multi-axis machine of claim 9, wherein: the vertical air floating platform further comprises a transition plate arranged on the other side of the third guide rail in the horizontal direction, a fixing part used for connecting and fixing the slide carriage with the third slide carriage, and limiting cushion blocks arranged at the upper end and the lower end of the third guide rail.

Background

The existing small-sized multi-axis machine tool mostly adopts a mechanical guide rail, which belongs to a contact type guide rail, inevitably generates friction with a base body, generates heat and generates abrasion in a high-speed state, and particularly on the occasion of frequent reciprocating motion, the abrasion of a mechanical roller ball is very serious, and the precision is easily lost. In addition, due to the fact that the drive and control scheme of a fixed brand is mostly adopted by the customized imported high-precision multi-axis machine tool, the cost of the imported whole machine is high, the matching degree of the drive and control scheme with the existing equipment or system of domestic customers is not high, and the drive and control scheme is not beneficial to independent allocation and later maintenance of customers with multiple requirements.

In view of the above, there is a need for an improved small multi-axis machine tool to solve the above problems.

Disclosure of Invention

The invention aims to provide a double-shaft air floating platform to solve the problem that an existing small-sized multi-shaft machine tool is easy to wear.

In order to achieve the above object, the present invention provides a dual-axis air floating platform, which comprises a first guide rail and a second guide rail vertically arranged in a horizontal direction, a first slide carriage arranged on two sides of the first guide rail in the extending direction, a second slide carriage arranged on two sides of the second guide rail in the extending direction, an inflation assembly for forming an air film between the first slide carriage and the first guide rail, and between the second slide carriage and the second guide rail, a first driving motor and a first grating scale arranged on the first guide rail, a second driving motor and a second grating scale arranged on the second guide rail, and an installation platform, wherein the first guide rail is arranged above the second guide rail in the vertical direction, the side edges of the first guide rail and the second guide rail are inclined in the vertical direction, the first slide carriage and the second slide carriage are fixedly connected, and the installation platform is fixed on the first guide rail, the first driving motor is used for driving the first guide rail to move relative to the first slide carriage, and the second driving motor is used for driving the second slide carriage to move relative to the second guide rail.

As a further improvement of the present invention, a first mounting groove is concavely formed in a lower surface of the first guide rail, the first driving motor and the first grating ruler are disposed in the first mounting groove, a second mounting groove is concavely formed in an upper surface of the second guide rail, and the second driving motor and the second grating ruler are disposed in the second mounting groove.

As a further improvement of the present invention, the dual-axis air floating platform further comprises a connecting plate, and the connecting plate is arranged between the first carriage and the second carriage and is fixedly connected with the first carriage and the second carriage.

As a further improvement of the invention, the inflation assembly is connected with the first slide carriage and the second slide carriage through an air pipe to provide air, and the air pipe is arranged in the connecting plate.

As a further improvement of the invention, the biaxial air-floating platform further comprises a flexible dust-free tow chain for connecting a power supply and a cable for connecting the flexible dust-free tow chain, wherein the cable is respectively connected with the first guide rail and the second guide rail, one end of the connecting plate is provided with a wire collecting groove which is arranged in a penetrating manner along the extension direction of the first guide rail, and the cable is arranged in the wire collecting groove.

As a further improvement of the invention, two ends of the second guide rail are respectively provided with a limit baffle for limiting the position of the second slide carriage, and the double-shaft air floating platform further comprises an organ cover for connecting the second slide carriage and the limit baffles so as to cover the second guide rail.

The invention also provides an air static pressure multi-axis machine tool which comprises a base, an upright post arranged on the base and extending upwards along the vertical direction, the double-shaft air floatation platform and a vertical air floatation platform arranged on the upright post, wherein the double-shaft air floatation platform is arranged on the base.

As a further improvement of the present invention, the vertical air floating platform includes a third guide rail extending along the vertical direction, third carriages arranged on both sides of the third guide rail in the extending direction, a third driving motor arranged on the third guide rail for driving the third guide rail to move, and a third grating ruler arranged on the third guide rail, the air charging assembly forms an air film between the third carriages and the third guide rail, and the side edge of the third guide rail is arranged obliquely along the horizontal direction.

As a further improvement of the invention, the vertical air floating platform further comprises counterweight cylinders arranged at two sides of the third slide carriage, a fixed slide carriage arranged at one side of the third guide rail along the horizontal direction, and an end baffle arranged at the upper end of the third guide rail, wherein the fixed slide carriage is fixed with the third slide carriage, and the counterweight cylinders are fixedly connected with the fixed slide carriage and the end baffle.

As a further improvement of the invention, the vertical air floating platform further comprises a mounting transition plate arranged on the other side of the third guide rail in the horizontal direction, a fixing part used for connecting and fixing the slide carriage and the third slide carriage, and limiting cushion blocks arranged at the upper end and the lower end of the third guide rail.

The invention has the beneficial effects that: according to the double-shaft air floating platform, the air film is formed by arranging the air charging assembly, so that the first guide rail and the second guide rail realize an air floating function, friction is reduced, and precision is improved. The double-shaft air floating platform is high in movement precision, convenient to install, flexible and practical.

Drawings

FIG. 1 is a schematic structural view of an aerostatic multi-axis machine tool of the present invention;

FIG. 2 is a schematic front view of the aerostatic multi-axis machine of the present invention;

FIG. 3 is a schematic structural view of a dual-axis air bearing platform of the present invention;

fig. 4 is a schematic structural diagram of a vertical air-bearing platform of the aerostatic multi-axis machine tool of the present invention.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

As shown in fig. 1 to 4, the aerostatic multi-axis machine tool 100 of the present invention includes a base 1, a vertical column 2 disposed on the base 1 and extending upward in a vertical direction, a dual-axis air floating platform 3, a vertical air floating platform 4 disposed on the vertical column 2, a plurality of supports 5 disposed below the base 1, rubber damping vibration isolation pads 6 disposed between the supports 5 and the base 1, and an electric control cabinet 7.

The plurality of brackets 5 are arranged in a surrounding manner to form an accommodating space 51, and the electric control cabinet 7 is arranged in the accommodating space 51 and is electrically connected with the double-shaft air floating platform 3 and the vertical air floating platform 4 to control the movement of the two. Therefore, internal wiring can be realized, the cable is prevented from being exposed, the whole equipment is more compact, and integrated transportation can be realized.

The base 1 and the upright post 2 are made of marble material to obtain better rigidity and insulation performance. The rubber damping shock insulation pad 6 can effectively isolate vibration, and better processing stability is obtained.

As shown in fig. 1 and 3, the biaxial air bearing platform 3 is disposed on the base 1. The double-shaft air floating platform 3 comprises a first guide rail 301 and a second guide rail 302 which are vertically arranged in the horizontal direction, a first slide carriage 303 arranged on two sides of the extension direction of the first guide rail 301, a second slide carriage 304 arranged on two sides of the extension direction of the second guide rail 302, an air inflation assembly used for forming an air film between the first slide carriage 303 and the first guide rail 301 as well as between the second slide carriage 304 and the second guide rail 302 and an air inflation assembly, a first driving motor 306 and a first grating scale 307 which are arranged on the first guide rail 301, a second driving motor and a second grating scale which are arranged on the second guide rail 302, a mounting platform 308, a connecting plate 309 used for connecting the first slide carriage 303 and the second slide carriage 304, a flexible dust-free drag chain 310 used for connecting a power supply, a cable connected with the flexible dust-free drag chain 310, and an organ cover 311.

The first guide rail 301 is disposed above the second guide rail 302 in the vertical direction.

The sides of the first guide rail 301 and the second guide rail 302 are disposed to be inclined in the vertical direction. In this embodiment, the cross section of the first guide rail 301 is a regular trapezoid, and the cross section of the second guide rail 302 is an inverted trapezoid. The first carriage 303 and the second carriage 304 are obliquely disposed toward one sides of the first guide rail 301 and the second guide rail 302 to be engaged with the first guide rail 301 and the second guide rail 302, respectively.

The first slide carriage 303 is fixedly connected with the second slide carriage 304, further, the connecting plate 309 is disposed between the first slide carriage 303 and the second slide carriage 304 and is fixedly connected with the first slide carriage 303 and the second slide carriage 304, and the connecting plate 309 abuts against the first guide rail 301 and the second guide rail 302 at the same time to limit the movement of the first guide rail 301 and the second guide rail 302 in the vertical direction. One end of the connecting plate 309 is provided with a wire winding groove 312 which is arranged in a penetrating manner along the extending direction of the first guide rail 301.

In this embodiment, the inflation assembly includes an air tank 305 and an air pipe, the air tank 305 is disposed in the receiving space 51, and the air pipe is disposed in the connecting plate 309 and connected to the first carriage 303 and the second carriage 304 to form an air film between the first carriage 303 and the first guide rail 301 or between the second carriage 304 and the second guide rail 302.

The lower surface of the first guide rail 301 is provided with a first mounting groove 313 in an upward concave manner, the first driving motor 306 and the first grating ruler 307 are arranged in the first mounting groove 313, the upper surface of the second guide rail 302 is provided with a second mounting groove 314 in a downward concave manner, and the second driving motor and the second grating ruler are arranged in the second mounting groove 314. The first grating scale 307 and the second grating scale ensure the straightness and precision of the first guide rail 301 and the second guide rail 302.

The mounting platform 308 is fixed on the first rail 301, the first driving motor 306 is used to drive the first rail 301 to move relative to the first carriage 303, and the second driving motor is used to drive the second carriage 304 to move relative to the second rail 302. The mounting platform 308 is used to mount a workpiece or inherit other accessories.

The cables are respectively connected to the first guide rail 301 and the second guide rail 302, and the cables are disposed in the cable take-up groove 312. In this embodiment, the flexible dust-free tow chain 310 is connected to the electric control cabinet 7, and the electric control cabinet 7 provides power and control signals.

Both ends of the second guide rail 302 are provided with limit baffles 315 to limit the position of the second slide carriage 304. The organ cover 311 connects the second slide 304 and the limit stop 315 to cover the second guide rail 302. The organ cover 311 can realize daily protection, prevent dust, cutting fluid and the like from falling on the second guide rail 302, and ensure the operation precision of the second guide rail 302.

The dual-axis air-bearing platform 3 of this embodiment is used as follows:

when the mounting platform 308 needs to be controlled to move along the extending direction of the second guide rail 302, the second driving motor is started to drive the second carriage 304, the connecting plate 309, the first carriage 303, the first guide rail 301 and the mounting platform 308 to move along the extending direction of the second guide rail 302; when the mounting platform 308 needs to be controlled to move along the extending direction of the first guide rail 301, the first driving motor 306 is started to drive the first guide rail 301 and the mounting platform 308 to move relative to the first carriage 303.

In this embodiment, the connecting plate 309 cooperates with the first carriage 303 and the second carriage 304 to limit the movement of the first guide rail 301 and the second guide rail 302 in the height direction, so that compared with the prior art, a limit plate structure can be omitted, the height of the biaxial air floating platform 3 is reduced, the movement center of mass is also reduced, and the running stability is improved.

As shown in fig. 4, the vertical air floating platform 4 includes a third guide rail 401 extending in the vertical direction, third carriages 402 disposed on both sides of the third guide rail 401 in the extending direction, a third driving motor 403 disposed on the third guide rail 401 for driving the third guide rail 401 to move, a third grating scale 404 disposed on the third guide rail 401, counterweight cylinders 405 disposed on both sides of the third carriages 402, a fixed carriage 406 disposed on one side of the third guide rail 401 in the horizontal direction, an end baffle 407 disposed on the upper end of the third guide rail 401, an installation transition plate 408 disposed on the other side of the third guide rail 401 in the horizontal direction, a fixing member 409 for connecting the fixed carriage 406 and the third carriage 402, and limit blocks 410 disposed on both upper and lower ends of the third guide rail 401.

The inflation assembly forms an air film between the third carriage 402 and the third rail 401, and the side edges of the third rail 401 are inclined in the horizontal direction.

The fixed slide carriage 406 abuts against the third guide rail 401, further, the side edge of the third guide rail 401 inclines inwards from the side close to the fixed slide carriage 406 to the side facing the installation transition plate 408, and the fixed slide carriage 406 abuts against the third guide rail 401 to prevent the third guide rail 401 from displacing in the horizontal direction. The vertical air floating platform 4 is thinner in thickness and can reduce torque force caused by the upright post 2.

The fixed carriage 406 is fixed to the third carriage 402 and the counterweight cylinder 405 is fixedly attached to the fixed carriage 406 and end stop 407. In this embodiment, the fixed carriage 406 is fixed to the column 2. The counterweight cylinder 405 is used to balance the overall mass of the moving parts, avoiding the influence of inertial force on the accuracy caused by vertical movement.

The limiting block 410 is used for limiting the movement of the third guide rail 401.

The mounting transition plate 408 is used for mounting accessories such as a spindle or a turntable.

The third driving motor 403 is activated to drive the third guide rail 401 to move up and down, so as to drive the accessory parts mounted on the transition plate 408 to move up and down. Through the use of the double-shaft air floatation platform 3, multi-shaft positioning is realized.

In addition, the double-shaft air floating platform 3 and the vertical air floating platform 4 in the embodiment are in modular design, can be replaced according to production requirements, and have high interchangeability, so that the manufacturing and production flexibility is effectively improved, the component precision is easier to control, the production efficiency is improved, the assembly difficulty is reduced, the diversified requirements of customers are more flexibly met, the research and development design time is reduced, and the market reaction capability is improved.

Other air-floating components except the vertical air-floating platform 4 can be integrated on the upright post 2, so that multi-shaft milling is realized.

According to the aerostatic multi-axis machine tool 100 and the double-axis air floatation platform 3, the inflation assembly is arranged, so that an air film is formed, the first guide rail 301, the second guide rail 302 and the third guide rail 401 realize an air floatation function, friction is reduced, and precision is improved; the first guide rail 301, the second guide rail 302 and the third guide rail 401 are arranged in an inclined manner at the sides, so that the whole structure is more compact, and the volume and the movement quality are reduced; the double-shaft air floating platform 3 and the vertical air floating platform 4 are in modular design, so that the processing cost and the stock cycle are effectively reduced, the manufacturing is more flexible, and the assembly precision is easier to guarantee. The aerostatic multi-axis machine tool 100 and the dual-axis air-floating platform 3 have high motion precision, are convenient to install, and are flexible and practical.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.