CN218556249U

CN218556249U - Machining center machine tool with three-shaft transmission device arranged in box top type

Info

Publication number: CN218556249U
Application number: CN202222795298.2U
Authority: CN
Inventors: 刘卫东; 阮乐贤
Original assignee: Dongguan Shenya Precision Machinery Co ltd
Current assignee: Dongguan Shenya Precision Machinery Co ltd
Priority date: 2022-10-21
Filing date: 2022-10-21
Publication date: 2023-03-03
Anticipated expiration: 2032-10-21

Abstract

The utility model belongs to the technical field of the machine tool, especially, relate to a machining center lathe of case top formula is arranged in to triaxial transmission, including base, the workstation of setting on the base and the longmen removal structure that is located the base upper end. The gantry moving structure comprises a gantry frame, a three-axis transmission mechanism and a machining machine head. The three-shaft transmission mechanism is arranged on the portal frame, the machining mechanism is connected to the three-shaft transmission mechanism, and the three-shaft transmission mechanism drives the machining machine head to move on the workbench. The portal frame comprises two supporting plates and a mounting plate, the two sides of the mounting plate are connected with the top ends of the two supporting plates respectively, a limiting part is arranged on the mounting plate and comprises two limiting plates which are arranged oppositely, and one end of the three-axis transmission mechanism is arranged between the two limiting plates. When the three-shaft transmission mechanism is used, the three-shaft transmission mechanism is integrated on a portal frame on a processing machine tool, so that the three-shaft transmission mechanism is arranged at the upper end of a processing table, and the erosion of cooling liquid and the splashing of processed waste chips are avoided.

Description

Machining center machine tool with three-shaft transmission device arranged in box top type

Technical Field

The utility model belongs to the technical field of the machine tool, especially, relate to a machining center lathe of case top formula is arranged in to triaxial transmission.

Background

With the development of the manufacturing industry, the three-axis numerical control machining center is widely used in the machining industry due to the characteristics of high machining automation degree, high efficiency and good machining quality. With the development of automation and the coming of new industrial equipment, the application of the three-axis numerical control machining center is more and more extensive, and the demand is more and more large. Machine tools on the market are three-axis machine tools generally, and the X-axis is arranged on a workbench, and an X-axis transmission mechanism on the machine tool is easily corroded by cooling liquid, or is easily splashed into the X-axis transmission mechanism by processing scraps, so that the processing precision is influenced, and the machine tool can be damaged.

Chinese patent document publication No. CN111097947A discloses a triaxial numerical control machine tool, including bed and the fixed mounting that the level set up in the wall formula stand of bed upper surface, the workstation is installed through Y axle motion to the upper surface of bed, Y axle motion can drive the workstation is along Y axle horizontal migration, wall formula stand is close to install the slide through X axle motion on the vertical working face of workstation, X axle motion can drive the slide is along X axle horizontal migration, the headstock is installed through Z axle motion to the lateral surface of slide, Z axle motion can drive the headstock is along Z axle vertical migration, vertical main shaft install in the headstock. In the scheme, the Y-axis transmission mechanism is arranged on the workbench, and the Y-axis transmission mechanism on the machine tool is easily corroded by cooling liquid or cutting liquid, or easily splashed into the Y-axis transmission mechanism by machining waste chips, so that the machining precision is influenced, and even the machining tool can be damaged.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a machining center lathe of case top formula is arranged in to triaxial transmission, the drive mechanism in the lathe that aims at solving among the prior art is corroded or is gone into by the processing sweeps splash by coolant liquid or cutting fluid easily, influences the machining precision, can damage the technical problem of machine tool even.

In order to achieve the above object, an embodiment of the present invention provides a machining center machine tool with a three-axis transmission device disposed in a box top type, which includes a base, a workbench disposed on the base, and a gantry moving structure disposed on the upper end of the base. The gantry moving structure comprises a gantry frame, a three-axis transmission mechanism and a machining machine head. The three-shaft transmission mechanism is arranged on the portal frame, the machining mechanism is connected to the three-shaft transmission mechanism, and the three-shaft transmission mechanism drives the machining machine head to move on the workbench. The portal frame comprises two supporting plates and a mounting plate, the two sides of the mounting plate are respectively connected with the top ends of the two supporting plates, a limiting part is arranged on the mounting plate and comprises two limiting plates which are oppositely arranged, and one end of the triaxial transmission mechanism is arranged between the two limiting plates.

Furthermore, the three-axis transmission mechanism comprises an X-axis transmission mechanism, a Y-axis transmission mechanism and a Z-axis transmission mechanism, the X-axis transmission mechanism is arranged between the two limiting plates, the Y-axis transmission mechanism is arranged at the driving end of the X-axis transmission mechanism, and the X-axis transmission mechanism drives the Y-axis transmission mechanism to move along the X-axis direction. The Z-axis transmission mechanism is arranged at the driving end of the Y-axis transmission mechanism, and the Y-axis transmission mechanism drives the Z-axis transmission mechanism to move along the Y-axis direction. The machining machine head is arranged at the driving end of the Z-axis transmission mechanism, and the Z-axis transmission mechanism drives the machining machine head to move along the Z-axis direction.

Furthermore, the X-axis transmission mechanism comprises two X-axis guide rails, an X-axis motor seat unit, an X-axis ball screw, an X-axis nut seat and an X-axis tail end seat. The two supporting plates extend upwards to form mounting parts, the two X-axis guide rails are arranged on the mounting parts, and the Y-axis transmission mechanism is connected with the two X-axis guide rails in a sliding mode. The X-axis motor seat unit and the X-axis tail end seat are arranged at the upper end of the mounting plate. One end of the X-axis ball screw is connected with the X-axis motor seat unit, and the other end of the X-axis ball screw is connected with the X-axis tail end seat. The X-axis motor seat unit is used for driving the X-axis ball screw to rotate. The X-axis nut seat is sleeved on the X-axis ball screw, and one side of the X-axis nut seat is connected with the lower end of the Y-axis transmission mechanism.

Furthermore, the Y-axis transmission mechanism comprises a saddle, two Y-axis guide rails, a Y-axis motor seat unit, a Y-axis ball screw, a Y-axis nut seat and a Y-axis tail end seat. Two sides of the saddle are connected with the two supporting plates in a sliding manner, the two Y-axis guide rails are arranged at the upper end and the lower end of the saddle, and the Y-axis guide rails are connected with the Z-axis transmission mechanism in a sliding manner. The Y-axis motor seat unit, the Y-axis ball screw, the Y-axis nut seat and the Y-axis tail end seat are all located in the saddle. One end of the Y-axis ball screw is connected with the Y-axis motor seat unit, the other end of the Y-axis ball screw is connected with the Y-axis tail end seat, and the Y-axis motor seat unit is used for driving the Y-axis ball screw to rotate. The Y-axis nut seat is sleeved on the rotation of the Y-axis ball screw, and one side of the Y-axis nut seat is connected with one side of the Z-axis transmission mechanism.

Furthermore, the Z-axis transmission mechanism comprises a Z-axis mounting seat, a Z-axis motor, two Z-axis guide rails, a Z-axis ball screw and a Z-axis nut seat. The two ends of the Z-axis mounting seat are connected with the Y-axis transmission mechanism in a sliding mode, a mounting groove with an outward opening is formed in the Z-axis mounting seat, and the Z-axis ball screw and the Z-axis nut seat are arranged in the mounting groove. The two Z-axis guide rails are arranged on two sides of the Z-axis mounting seat and are connected with the machining head in a sliding mode. The Z-axis motor is arranged at the upper end of the Z-axis mounting seat, the Z-axis ball screw is arranged on the Z-axis mounting seat, one end of the Z-axis ball screw is connected with the Z-axis motor, and the Z-axis motor is used for driving the Z-axis ball screw to rotate. The Z-axis nut seat is sleeved on the Z-axis ball screw, and one end of the Z-axis nut seat is connected with the machining machine head.

Further, the machining head comprises a main spindle box, a main spindle motor and a main spindle. The main shaft box is connected with the Z-axis transmission mechanism in a sliding mode, the main shaft motor is arranged on the main shaft box, the main shaft is connected with the driving end of the main shaft motor, the main shaft motor drives the main shaft to rotate, and the main shaft is used for clamping a cutter.

Furthermore, the machining head also comprises two guide pipes, wherein the two guide pipes are arranged on one side of the spindle box, one guide pipe is used for spraying cutting fluid, and the other guide pipe is used for spraying cooling fluid or cold air.

Further, still include a disc tool magazine, the disc tool magazine sets up in one side of portal frame, and the disc tool magazine is used for placing the cutter.

The embodiment of the utility model provides a triaxial transmission arranges above-mentioned one or more technical scheme in the machining center lathe of case top formula in and has one of following technological effect at least:

1. when the three-shaft transmission mechanism is used, the three-shaft transmission mechanism is integrated on a portal frame on a processing machine tool, the three-shaft transmission mechanism is arranged at the upper end of a processing table, the corrosion of cooling liquid and the splashing of processed scraps are avoided, and meanwhile, the three-shaft transmission mechanism drives a processing machine head to move, so that the processing machine head cuts on a workpiece.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

Fig. 1 is a schematic structural view of a machining center machine tool with a three-axis transmission device arranged in a box top type according to an embodiment of the present invention.

Fig. 2 is the embodiment of the present invention provides a schematic structural diagram of a machining center machine tool with a box top type three-axis transmission device arranged in the portal frame.

Fig. 3 is a schematic structural view of the X-axis transmission mechanism of the machining center machine tool of the box top type arranged in the three-axis transmission device provided by the embodiment of the present invention.

Fig. 4 is a schematic structural view of the Y-axis transmission mechanism of the machining center machine tool of the box top type arranged in the three-axis transmission device provided by the embodiment of the present invention.

Fig. 5 is a schematic structural view of the Z-axis transmission mechanism of the machining center machine tool of the box top type arranged in the three-axis transmission device provided by the embodiment of the present invention.

Reference numerals: 100. a base; 200. a work table; 300. a gantry moving structure; 310. a gantry; 311. A support plate; 312. mounting a plate; 313. a limiting part; 314. a limiting plate; 315. an installation part; 320. a three-axis transmission mechanism; 330. processing a machine head; 331. a main spindle box; 332. a spindle motor; 333. a main shaft; 334. a conduit; 400. an X-axis transmission mechanism; 410. an X-axis guide rail; 420. an X-axis motor base unit; 430. an X-axis ball screw; 440. an X-axis nut seat; 450. an X-axis tail end seat; 500. a Y-axis transmission mechanism; 510. a Y-axis guide rail; 520. a Y-axis motor base unit; 530. a Y-axis ball screw; 540. a Y-axis nut seat; 550. a Y-axis tail end seat; 560. a saddle; 600. a Z-axis transmission mechanism; 610. a Z-axis guide rail 620 and a Z-axis motor; 630. A Z-axis ball screw; 640. a Z-axis nut seat; 650. a Z-axis mounting base; 651. mounting grooves; 700. disc tool magazine.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary intended for explaining the embodiments of the present invention, and should not be construed as limiting the present invention.

In the description of the embodiments of the present invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings, which is only for convenience in describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element so indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as fixed or detachable connections or as an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the embodiments of the present invention can be understood by those skilled in the art according to specific situations.

In an embodiment of the present invention, referring to fig. 1 to 5, a machining center machine tool with a three-axis transmission device disposed on a box top is provided, which includes a base 100, a worktable 200 disposed on the base 100, and a gantry moving structure 300 disposed on an upper end of the base 100. The gantry moving structure 300 includes a gantry 310, a three-axis transmission mechanism 320, and a machining head 330. The three-axis transmission mechanism 320 is arranged on the portal frame 310, the machining mechanism is connected to the three-axis transmission mechanism 320, and the three-axis transmission mechanism drives the machining head 330 to move on the workbench 200. The portal frame 310 comprises two support plates 311 and a mounting plate 312, two sides of the mounting plate 312 are connected with the top ends of the two support plates 311 respectively, a limiting part 313 is arranged on the mounting plate 312, the limiting part 313 comprises two oppositely-arranged limiting plates 314, and one end of the three-axis transmission mechanism 320 is arranged between the two limiting plates 314. In this embodiment, in use, the three-axis transmission mechanism 320 is integrated into the gantry 310 of the machine tool, so that the three-axis transmission mechanism 320 is disposed at the upper end of the machining table to avoid erosion by the coolant and splash of the machined waste, and at the same time, the three-axis transmission mechanism 320 drives the machining head 330 to move, so that the machining head 330 performs cutting on the workpiece.

Specifically, referring to fig. 1 to 5, the three-axis transmission mechanism 320 includes an X-axis transmission mechanism 400, a Y-axis transmission mechanism 500, and a Z-axis transmission mechanism 600, the X-axis transmission mechanism 400 is disposed between the two limiting plates 314, the Y-axis transmission mechanism 500 is disposed at the driving end of the X-axis transmission mechanism 400, and the X-axis transmission mechanism 400 drives the Y-axis transmission mechanism 500 to move along the X-axis direction. The Z-axis transmission mechanism 600 is disposed at the driving end of the Y-axis transmission mechanism 500, and the Y-axis transmission mechanism 500 drives the Z-axis transmission mechanism 600 to move in the Y-axis direction. The machining head 330 is disposed at a driving end of the Z-axis transmission mechanism 600, and the Z-axis transmission mechanism 600 drives the machining head 330 to move in the Z-axis direction. In this embodiment, the X-axis transmission mechanism 400, the Y-axis transmission mechanism 500, and the Z-axis transmission mechanism 600 are integrated on the gantry 310 on the processing machine tool, so that the X-axis transmission mechanism 400, the Y-axis transmission mechanism 500, and the Z-axis transmission mechanism 600 are disposed at the upper end of the processing table, thereby preventing erosion of the coolant and splash of processed scraps, and meanwhile, the X-axis transmission mechanism 400, the Y-axis transmission mechanism 500, and the Z-axis transmission mechanism 600 drive the processing head 330 to move, so that the processing head 330 performs cutting on the workpiece, and the X-axis transmission mechanism 400, the Y-axis transmission mechanism 500, and the Z-axis transmission mechanism 600 are a layer-by-layer progressive assembly connection structure, thereby facilitating installation and maintenance.

Specifically, referring to fig. 1 to 5, the X-axis transmission mechanism 400 includes two X-axis guide rails 410, an X-axis motor mount unit 420, an X-axis ball screw 430, an X-axis nut mount 440, and an X-axis tail mount 450. The two support plates 311 extend upwards to form mounting portions 315, the two X-axis guide rails 410 are arranged on the mounting portions 315, and the Y-axis transmission mechanism 500 is connected with the two X-axis guide rails 410 in a sliding manner. An X-axis motor mount unit 420 and an X-axis tailstock 450 are provided at the upper end of the mounting plate 312. One end of the X-axis ball screw 430 is connected to the X-axis motor mount unit 420, and the other end is connected to the X-axis tail mount 450. The X-axis motor mount unit 420 serves to drive the rotation of the X-axis ball screw 430. The X-axis nut seat 440 is sleeved on the X-axis ball screw 430, and one side of the X-axis nut seat 440 is connected to the lower end of the Y-axis transmission mechanism 500. In the present embodiment, the X-axis transmission mechanism 400 includes two X-axis guide rails 410, an X-axis motor mount unit 420, an X-axis ball screw 430, an X-axis nut mount 440, and an X-axis tail mount 450. Adopt screw drive as the utility model provides a four-axis transmission's gantry structure machining center lathe's X axle drive mechanism 400 has transmission precision height, and the motion is steady, does not have the phenomenon of crawling, does not have advantages such as idle stroke during the reversal, promotes the machining precision, and X axle motor seat unit 420 and the spacing X axle nut seat 440 of X axle tail end seat 450 avoid X axle nut seat 440 to run out outside X axle ball screw 430, cause the machine to damage simultaneously.

Specifically, referring to fig. 1 to 5, the Y-axis transmission mechanism 500 includes a saddle 560, two Y-axis guide rails 510, a Y-axis motor base unit 520, a Y-axis ball screw 530, a Y-axis nut base 540, and a Y-axis tail base 550. Two sides of the saddle 560 are slidably connected to the two support plates 311, two Y-axis guide rails 510 are disposed at the upper and lower ends of the saddle 560, and the Y-axis guide rails 510 are slidably connected to the Z-axis transmission mechanism 600. The Y-axis motor mount unit 520, the Y-axis ball screw 530, the Y-axis nut mount 540, and the Y-axis tail mount 550 are all located within the saddle 560. One end of the Y-axis ball screw 530 is connected to the Y-axis motor mount unit 520, the other end is connected to the Y-axis tail mount 550, and the Y-axis motor mount unit 520 is used to drive the Y-axis ball screw 530 to rotate. The Y-axis nut seat 540 is sleeved on the Y-axis ball screw 530 for rotation, and one side of the Y-axis nut seat 540 is connected with one side of the Z-axis transmission mechanism 600. In the present embodiment, the Y-axis transmission mechanism 500 includes a saddle 560, two Y-axis rails 510, a Y-axis motor mount unit 520, a Y-axis ball screw 530, a Y-axis nut mount 540, and a Y-axis tail mount 550. Adopt screw drive as the utility model provides a Y axle drive mechanism 500 of four-axis transmission's gantry structure machining center lathe has transmission precision height, and the motion is steady, does not have the phenomenon of crawling, does not have advantages such as idle stroke during the reversal, promotes the machining precision, and Y axle motor seat unit 520 and the spacing Y axle nut seat 540 of Y axle tail end seat 550 avoid Y axle nut seat 540 to run out outside Y axle ball screw 530 simultaneously, cause the machine to damage.

Specifically, referring to fig. 1-5, the Z-axis transmission mechanism 600 includes a Z-axis mount 650, a Z-axis motor 620, two Z-axis guide rails 610, a Z-axis ball screw 630, and a Z-axis nut mount 640. The two ends of the Z-axis mounting seat 650 are slidably connected with the Y-axis transmission mechanism 500, a mounting groove 651 with an outward opening is arranged on the Z-axis mounting seat 650, and the Z-axis ball screw 630 and the Z-axis nut seat 640 are both arranged in the mounting groove 651. Two Z-axis guide rails 610 are disposed on two sides of the Z-axis mounting base 650, and the two Z-axis guide rails 610 are slidably connected to the machining head 330. The Z-axis motor 620 is arranged at the upper end of the Z-axis mounting base 650, the Z-axis ball screw 630 is arranged on the Z-axis mounting base 650, one end of the Z-axis ball screw 630 is connected with the Z-axis motor 620, and the Z-axis motor 620 is used for driving the Z-axis ball screw 630 to rotate. The Z-axis nut seat 640 is sleeved on the Z-axis ball screw 630, and one end of the Z-axis nut seat 640 is connected with the machining head 330. In this embodiment, the Z-axis transmission mechanism 600 includes a Z-axis mounting base 650, a Z-axis motor 620, two Z-axis guide rails 610, a Z-axis ball screw 630 and a Z-axis nut base 640, wherein the Z-axis mounting base 650 is provided with a mounting groove 651 with an outward opening, and the Z-axis ball screw 630 and the Z-axis nut base 640 are both disposed in the mounting groove 651. Adopt screw drive as the utility model provides a Z axle drive mechanism 600 of four-axis transmission's longmen structure machining center lathe has that the transmission precision is high, and the motion is steady, does not have the phenomenon of crawling, and advantages such as no idle stroke when reverse promote the machining precision, and the spacing Y axle nut seat 540 of mounting groove 651 avoids Y axle nut seat 540 to run out outside Z axle ball screw 630, causes the machine to damage simultaneously.

Specifically, referring to fig. 1 to 5, the machining head 330 includes a spindle 333 casing 331, a spindle 333 motor 332, and a spindle 333. The main shaft 333 box 331 is connected with the Z-axis transmission mechanism 600 in a sliding mode, the main shaft 333 motor 332 is arranged on the main shaft 333 box 331, the main shaft 333 is connected with the driving end of the main shaft 333 motor 332, the main shaft 333 is driven by the main shaft 333 motor 332 to rotate, and the main shaft 333 is used for clamping a tool. In the embodiment, the spindle 333 motor 332 drives the spindle 333 to rotate, the spindle 333 is used for clamping a tool, and the tool is driven by the spindle 333 motor 332 to rotate at a high speed to cut a workpiece.

Specifically, referring to fig. 1 to 5, the machining head 330 further includes two ducts 334, the two ducts 334 are disposed at one side of the main shaft 333 box 331, one duct 334 is used for spraying the cutting fluid, and the other duct 334 is used for spraying the cooling fluid or the cold air. In this embodiment, the guide tube 334 is disposed on the machining head 330, and moves along with the movement of the machining head 330, so that the cutting fluid or the cooling fluid sprayed from the guide rail can be accurately sprayed on the machining surface, and different solutions need to be sprayed in response to different machining methods, and the double-guide-tube 334 structure can be used for most machining methods.

Specifically, as shown in fig. 1 to 5, the tool magazine 700 is further included, the tool magazine 700 is disposed on one side of the gantry 310, and the tool magazine 700 is used for placing tools. In this embodiment, when the tool on the machining head 330 needs to be replaced, only the proper tool needs to be selected from the disc magazine 700 for replacement, which is more convenient to use.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A three-axis transmission device is arranged on a box top type machining center machine tool and comprises a base, a workbench arranged on the base and a gantry moving structure positioned at the upper end of the base; the method is characterized in that: the gantry moving structure comprises a gantry frame, a three-axis transmission mechanism and a machining head; the three-shaft transmission mechanism is arranged on the portal frame, the machining mechanism is connected to the three-shaft transmission mechanism, and the three-shaft transmission mechanism drives the machining head to move on the workbench; the portal frame includes two backup pads and mounting panel, the both sides of mounting panel respectively with two the top of backup pad is connected, be equipped with spacing portion on the mounting panel, spacing portion includes the limiting plate of two relative settings, three-axis drive mechanism's one end sets up between two limiting plates.

2. The three-axis drive of claim 1 disposed in a box-top machining center, wherein: the three-axis transmission mechanism comprises an X-axis transmission mechanism, a Y-axis transmission mechanism and a Z-axis transmission mechanism, the X-axis transmission mechanism is arranged between the two limiting plates, the Y-axis transmission mechanism is arranged at the driving end of the X-axis transmission mechanism, and the X-axis transmission mechanism drives the Y-axis transmission mechanism to move along the X-axis direction; the Z-axis transmission mechanism is arranged at the driving end of the Y-axis transmission mechanism, and the Y-axis transmission mechanism drives the Z-axis transmission mechanism to move along the Y-axis direction; the machining machine head is arranged at the driving end of the Z-axis transmission mechanism, and the Z-axis transmission mechanism drives the machining machine head to move along the Z-axis direction.

3. The three-axis drive of claim 2 disposed in a box-top machining center, wherein: the X-axis transmission mechanism comprises two X-axis guide rails, an X-axis motor seat unit, an X-axis ball screw, an X-axis nut seat and an X-axis tail end seat; the two supporting plates extend upwards to form mounting parts, the two X-axis guide rails are arranged on the mounting parts, and the Y-axis transmission mechanism is connected with the two X-axis guide rails in a sliding manner; the X-axis motor seat unit and the X-axis tail end seat are arranged at the upper end of the mounting plate; one end of the X-axis ball screw is connected with the X-axis motor seat unit, and the other end of the X-axis ball screw is connected with the X-axis tail end seat; the X-axis motor seat unit is used for driving the X-axis ball screw to rotate; the X-axis nut seat is sleeved on the X-axis ball screw, and one side of the X-axis nut seat is connected with the lower end of the Y-axis transmission mechanism.

4. The three-axis drive of claim 2 disposed in a box-top machining center, wherein: the Y-axis transmission mechanism comprises a saddle, two Y-axis guide rails, a Y-axis motor seat unit, a Y-axis ball screw, a Y-axis nut seat and a Y-axis tail end seat; two sides of the saddle are connected with the two supporting plates in a sliding manner, the two Y-axis guide rails are arranged at the upper end and the lower end of the saddle, and the Y-axis guide rails are connected with the Z-axis transmission mechanism in a sliding manner; the Y-axis motor seat unit, the Y-axis ball screw, the Y-axis nut seat and the Y-axis tail end seat are all positioned in the saddle; one end of the Y-axis ball screw is connected with the Y-axis motor seat unit, the other end of the Y-axis ball screw is connected with the Y-axis tail end seat, and the Y-axis motor seat unit is used for driving the Y-axis ball screw to rotate; the Y-axis nut seat is sleeved on the Y-axis ball screw to rotate, and one side of the Y-axis nut seat is connected with one side of the Z-axis transmission mechanism.

5. The three-axis drive of claim 2 disposed in a box-top machining center, wherein: the Z-axis transmission mechanism comprises a Z-axis mounting seat, a Z-axis motor, two Z-axis guide rails, a Z-axis ball screw and a Z-axis nut seat; the two ends of the Z-axis mounting seat are connected with the Y-axis transmission mechanism in a sliding manner, a mounting groove with an outward opening is formed in the Z-axis mounting seat, and the Z-axis ball screw and the Z-axis nut seat are both arranged in the mounting groove; the two Z-axis guide rails are arranged on two sides of the Z-axis mounting seat and are connected with the machining head in a sliding manner; the Z-axis motor is arranged at the upper end of the Z-axis mounting seat, the Z-axis ball screw is arranged on the Z-axis mounting seat, one end of the Z-axis ball screw is connected with the Z-axis motor, and the Z-axis motor is used for driving the Z-axis ball screw to rotate; the Z-axis nut seat is sleeved on the Z-axis ball screw, and one end of the Z-axis nut seat is connected with the machining head.

6. The machine tool of claim 2, wherein the three-axis drive is disposed in a box-top machining center, and wherein: the machining machine head comprises a spindle box, a spindle motor and a spindle; the spindle box is connected with the Z-axis transmission mechanism in a sliding mode, the spindle motor is arranged on the spindle box, the spindle is connected with the driving end of the spindle motor, the spindle motor drives the spindle to rotate, and the spindle is used for clamping a tool.

7. The three-axis drive of claim 6 disposed in a box-top machining center, wherein: the machining head further comprises two guide pipes, the two guide pipes are arranged on one side of the spindle box, one guide pipe is used for spraying cutting fluid, and the other guide pipe is used for spraying cooling fluid or cold air.

8. The three-axis drive device of any one of claims 1 to 7 disposed in a box-top machining center machine tool, wherein: the automatic tool changing device is characterized by further comprising a disc tool magazine, wherein the disc tool magazine is arranged on one side of the portal frame and is used for placing tools.