A turntable structure for a high-precision five-axis vertical CNC machine tool

Abstract

The present invention discloses a turntable structure of a high-precision five-axis vertical CNC machine tool, and relates to the technical field of CNC machine tools. The present invention includes a five-axis machining CNC frame, a turntable body is arranged on the five-axis machining CNC frame, a turntable driving mechanism is arranged on the turntable body, a rotating worktable is installed on the top of the turntable driving mechanism, the driving mechanism body is fixedly installed on the turntable body, an installation cavity is arranged inside the driving mechanism body, a pair of vertical screw rods are rotatably installed between the inner top surface and the inner bottom surface, and a first horizontal rotating rod is rotatably installed between the first inner side surface and the second inner side surface. The controller drives the rotary table up and down by driving the motor, and the controller rotates the rotary table while raising and lowering it by the electric telescopic device, thereby realizing the high-precision movement of the five-axis machining CNC machine tools on the market, thereby improving the level of intelligence while meeting the processing requirements of high-precision workpieces.

Description

Technical Field

[0001] The invention belongs to the technical field of numerical control machine tools, and in particular relates to a turntable structure of a high-precision five-axis vertical numerical control machine tool. Background Art

[0002] High-end machining centers are developing in the direction of five-axis control. Five-axis linkage machining centers are characterized by high efficiency and high precision, and can complete the processing of complex curved surfaces with one clamping of the workpiece. Five-axis linkage CNC machine tools are high-tech and high-precision machine tools specially used for processing complex curved surfaces. They have a significant influence on industries such as aviation, aerospace, military, scientific research, precision instruments, and high-precision medical equipment.

[0003] The precision of the swing table directly affects the processing quality of the five-axis linkage machining center. Usually, the swing table is driven by a servo motor, and the power is transmitted through the transmission structure of the mechanical system (pulley, turbine, worm, etc.) to drive the table to rotate. The table is used to fix the processed parts. The table cannot be raised or lowered while rotating, which cannot meet the needs of specific parts processing.

[0004] The existing published patent CN202111479571.4 discloses a five-axis machine tool turntable with a shock-absorbing structure, which relates to the technical field of CNC machine tools. It includes a turntable body, a rotating worktable is arranged on the turntable body, a recessed portion is arranged at the center of the upper part of the rotating worktable, and a plurality of T-shaped slots are evenly arranged around the recessed portion; a rotating shaft is connected to the center of the rotating worktable; the rotating shaft is connected to the turntable body through a bearing; the rotating shaft is a hollow structure, one end of which is connected to a diverter plate, and the other end is connected to a connecting pipe; the diverter plate is located in the recessed portion, and a plurality of diverter holes are arranged on the side wall of the diverter plate; the axis of the diverter hole corresponds to the axis of the T-shaped slot one by one; an oil seal and a water pipe joint are arranged on the outer shell of the turntable body; the oil seal is arranged on the inner side of the water pipe joint; the end of the connecting pipe passes through the oil seal and is placed in the water pipe joint.

[0005] However, the five-axis machine tool turntable in the above disclosed technology cannot be raised or lowered while rotating, and cannot meet the needs of specific parts processing. Summary of the invention

[0006] The object of the present invention is to provide a turntable structure for a high-precision five-axis vertical CNC machine tool, by arranging a turntable body on a five-axis machining CNC frame, a turntable driving mechanism on the turntable body, and a rotating worktable installed on the top of the turntable driving mechanism to solve the above-mentioned problems.

[0007] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0008] The present invention discloses a turntable structure of a high-precision five-axis vertical CNC machine tool, comprising a five-axis CNC machining frame; a turntable body is arranged on the five-axis CNC machining frame; a turntable driving mechanism is arranged on the turntable body; and a rotating worktable is installed on the top of the turntable driving mechanism.

[0009] As a preferred technical solution of the present invention, the turntable driving mechanism includes a driving mechanism body, a horizontal lifting plate, a vertical lifting rod, a vertical rack, and a controller; the driving mechanism body is fixedly mounted on the turntable body; a mounting cavity is provided inside the driving mechanism body; the mounting cavity includes an inner top surface, an inner bottom surface, a first inner side surface, a second inner side surface, and a rear inner side surface;

[0010] The controller is fixedly mounted on the second inner side surface; a pair of vertical screw rods are rotatably mounted between the inner top surface and the inner bottom surface; and a first horizontal rotating rod is rotatably mounted between the first inner side surface and the second inner side surface.

[0011] As a preferred technical solution of the present invention, the ring sides of both ends of the first horizontal rotating rod are fixedly connected with active bevel gears; the ring side of the lower part of each vertical screw rod is fixedly connected with a driven bevel gear; the active bevel gear is meshingly connected with the driven bevel gear.

[0012] As a preferred technical solution of the present invention, a motor is fixedly installed on the inner bottom surface; the controller is electrically connected to the motor; a driving gear is fixedly connected to the ring side of the output shaft of the motor; a driven gear is fixedly connected to the ring side of the middle part of the first horizontal rotating rod; the driving gear is meshingly connected to the driven gear.

[0013] As a preferred technical solution of the present invention, a pair of screw holes are provided on the horizontal lifting plate; the vertical screw is meshed and connected with the screw holes on the horizontal lifting plate; the middle part of the upper surface of the horizontal lifting plate is fixedly connected with the bottom of the vertical lifting rod; the lower surface of the rotating workbench is fixedly installed with the top of the vertical lifting rod; and a through groove is provided on the inner top surface for the vertical lifting rod to pass through.

[0014] As a preferred technical solution of the present invention, a pair of L-shaped mounting plates are provided on the upper surface of the horizontal lifting plate; a second horizontal rotating rod is rotatably installed between the pair of L-shaped mounting plates; the ring side of the second horizontal rotating rod is fixedly connected with a first bevel gear and a gear; the ring side of the lower part of the vertical lifting rod is fixedly connected with a second bevel gear; the first bevel gear is meshed with the second bevel gear; and the vertical rack cooperates with the gear.

[0015] As a preferred technical solution of the present invention, a mounting plate is provided on the inner top surface; an electric telescopic device is fixedly installed on the mounting plate; the controller is electrically connected to the electric telescopic device; an electric telescopic rod is provided at the output end of the electric telescopic device; a horizontal telescopic rod is fixedly connected to the rear inner side surface; the upper part of one side surface of the vertical rack is fixedly connected to one end of the electric telescopic rod; and the lower part of one side surface of the vertical rack is fixedly connected to one end of the horizontal telescopic rod.

[0016] As a preferred technical solution of the present invention, vertical positioning rods are provided on the first inner side surface and the second inner side surface; limiting sliders are provided at both ends of the horizontal lifting plate; a limiting slide groove is provided on the vertical positioning rod; the limiting slide groove is slidably installed in the limiting slide groove and slides up and down along the limiting slide groove.

[0017] As a preferred technical solution of the present invention, a first infrared sensor is installed on the upper surface of one of the limit sliding blocks and a second infrared sensor is installed on the lower surface; the first infrared sensor cooperates with the inner top surface of the limit sliding groove; the second infrared sensor cooperates with the inner bottom surface of the limit sliding groove.

[0018] As a preferred technical solution of the present invention, the first infrared sensor and the second infrared sensor are both electrically connected to the controller.

[0019] The present invention has the following beneficial effects:

[0020] 1. The present invention provides a turntable body on a five-axis CNC machine frame, a turntable driving mechanism is provided on the turntable body, a rotary table is installed on the top of the turntable driving mechanism, a controller drives the rotary table up and down through a driving motor, and the controller causes the rotary table to rotate while being raised and lowered through an electric telescopic device, thereby achieving high-precision movement of five-axis CNC machine tools on the market, thereby improving the level of intelligence while meeting the processing requirements of high-precision workpieces.

[0021] 2. The present invention fixes a horizontal telescopic rod on the rear inner side surface, and the lower part of one side surface of the vertical rack is fixedly connected to one end of the horizontal telescopic rod, so that the vertical rack is more firmly in a vertical state, and the vertical rack will not shake when the gear is meshed with the vertical rack.

[0022] Of course, any product implementing the present invention does not necessarily need to achieve all of the above advantages at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0024] Figure 1 It is a structural schematic diagram of a turntable structure of a high-precision five-axis vertical CNC machine tool of the present invention;

[0025] Figure 2 It is a front view structural schematic diagram of the connection between the turntable drive mechanism and the rotary worktable;

[0026] Figure 3 It is a structural schematic diagram of the turntable driving mechanism;

[0027] Figure 4 for Figure 3 A schematic diagram of the structure with a local enlargement at A;

[0028] Figure 5 It is a side structural schematic diagram of the turntable driving mechanism;

[0029] Figure 6 for Figure 5 Cross-sectional view of the middle DD;

[0030] Figure 7 It is a front view structural schematic diagram of the turntable driving mechanism;

[0031] Figure 8 for Figure 7 Cross-sectional view of CC;

[0032] Fig. 9 is a cross-sectional view of the turntable driving mechanism;

[0033] Fig.10 for Fig. 9 A schematic diagram of the structure of the local enlargement at B in FIG.

[0034] Fig.11 It is a front view structural diagram of the connection of the horizontal lifting plate, the limit slider, the first infrared sensor and the second infrared sensor;

[0035] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0036] 1-five-axis machining CNC frame, 2-turntable body, 3-turntable drive mechanism, 4-rotating worktable, 301-drive mechanism body, 302-installation cavity, 303-inner top surface, 304-inner bottom surface, 305-first inner side surface, 306-second inner side surface, 307-rear inner side surface, 308-vertical screw rod, 309-first horizontal rotating rod, 310-driving bevel gear, 311-driven bevel gear, 312-motor, 313-driving gear, 314-driven gear, 315-horizontal lifting plate, 3 16-vertical lifting rod, 317-L-shaped mounting plate, 318-second horizontal rotating rod, 319-first bevel gear, 320-gear, 321-second bevel gear, 322-vertical rack, 323-mounting plate, 324-electric telescopic device, 325-electric telescopic rod, 326-horizontal telescopic rod, 327-vertical positioning rod, 328-limiting slider, 329-limiting slide groove, 330-first infrared sensor, 331-second infrared sensor, 332-controller, 333-through groove. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] Embodiment 1

[0039] See also Figure 1 As shown, the present invention is a turntable structure of a high-precision five-axis vertical CNC machine tool, including a five-axis machining CNC frame 1, a turntable body 2 is arranged on the five-axis machining CNC frame 1, a turntable driving mechanism 3 is arranged on the turntable body 2, and a rotating worktable 4 is installed on the top of the turntable driving mechanism 3.

[0040] Embodiment 2

[0041] Based on the technical solution described in the above embodiment 1. Figure 2-11As shown, the turntable driving mechanism 3 includes a driving mechanism body 301, a mounting cavity 302, a vertical screw rod 308, a first horizontal rotating rod 309, an active bevel gear 310, a driven bevel gear 311, a motor 312, a driving gear 313, a driven gear 314, a horizontal lifting plate 315, a vertical lifting rod 316, an L-shaped mounting plate 317, a second horizontal rotating rod 318, a first bevel gear 319, a gear 320, a second bevel gear 321, a vertical rack 322, a mounting plate 323, an electric telescopic device 324, an electric telescopic rod 325, a vertical positioning rod 327, a limiting slider 328, a limiting slide groove 329, a first infrared sensor 330, a second infrared sensor 331, a controller 332, and a through groove 333.

[0042] The driving mechanism body 301 is fixedly mounted on the turntable body 2, and a mounting cavity 302 is provided inside the driving mechanism body 301. The mounting cavity 302 includes an inner top surface 303, an inner bottom surface 304, a first inner side surface 305, a second inner side surface 306, and a rear inner side surface 307. The controller 332 is fixedly mounted on the second inner side surface 306. A pair of vertical screw rods 308 are rotatably mounted between the inner top surface 303 and the inner bottom surface 304, and a first horizontal rotating rod 309 is rotatably mounted between the first inner side surface 305 and the second inner side surface 306.

[0043] The ring sides of both ends of the first horizontal rotating rod 309 are fixedly connected with active bevel gears 310, and the ring sides of the lower parts of each vertical screw rod 308 are fixedly connected with driven bevel gears 311. The active bevel gear 310 is meshedly connected with the driven bevel gear 311, and the rotation of the first horizontal rotating rod 309 can drive the two vertical screw rods 308 to rotate.

[0044] A motor 312 is fixedly mounted on the inner bottom surface 304, and a controller 332 is electrically connected to the motor 312. A driving gear 313 is fixedly connected to the ring side of the output shaft of the motor 312, and a driven gear 314 is fixedly connected to the ring side of the middle part of the first horizontal rotating rod 309, and the driving gear 313 is meshedly connected with the driven gear 314. The controller 332 drives the motor 312 to rotate forward, which can make the first horizontal rotating rod 309 rotate forward, and then make the two vertical screw rods 308 rotate forward; the controller 332 drives the motor 312 to reverse, which can make the first horizontal rotating rod 309 reverse, and then make the two vertical screw rods 308 reverse.

[0045] A pair of screw holes are provided on the horizontal lifting plate 315, and the vertical screw rod 308 is meshedly connected with the screw holes on the horizontal lifting plate 315. The middle part of the upper surface of the horizontal lifting plate 315 is fixedly connected to the bottom of the vertical lifting rod 316, so that the horizontal lifting plate 315 rises when the vertical screw rod 308 rotates forward, and the horizontal lifting plate 315 falls when the vertical screw rod 308 rotates reversely.

[0046] The lower surface of the rotating workbench 4 is fixedly installed with the top of the vertical lifting rod 316, and a through groove 333 is opened on the inner top surface 303 for the vertical lifting rod 316 to move through. When the horizontal lifting plate 315 rises, the vertical lifting rod 316 rises along the through groove 333, thereby causing the rotating workbench 4 to rise; when the horizontal lifting plate 315 descends, the vertical lifting rod 316 descends along the through groove 333, thereby causing the rotating workbench 4 to descend.

[0047] A pair of L-shaped mounting plates 317 are provided on the upper surface of the horizontal lifting plate 315, and a second horizontal rotating rod 318 is rotatably mounted between the pair of L-shaped mounting plates 317. The ring side of the second horizontal rotating rod 318 is fixedly connected with a first bevel gear 319 and a gear 320. The ring side of the lower part of the vertical lifting rod 316 is fixedly connected with a second bevel gear 321, the first bevel gear 319 is meshed with the second bevel gear 321, and the vertical rack 322 is matched with the gear 320.

[0048] A mounting plate 323 is provided on the inner top surface 303, and an electric telescopic device 324 is fixedly installed on the mounting plate 323. The controller 332 is electrically connected to the electric telescopic device 324. An electric telescopic rod 325 is provided at the output end of the electric telescopic device 324. The upper part of one side of the vertical rack 322 is fixedly connected to one end of the electric telescopic rod 325. The controller 332 drives the electric telescopic device 324 to extend the electric telescopic rod 325, thereby causing the vertical rack 322 to mesh with the gear 320. When the horizontal lifting plate 315 moves up and down, it can drive the gear 320 to move up and down. Due to the meshing action of the vertical rack 322 and the gear 320, the gear 320 rotates while moving up and down, thereby causing the second bevel gear 321 to rotate, thereby causing the vertical lifting rod 316 to rotate, thereby causing the rotary table 4 to rotate.

[0049] A vertical positioning rod 327 is provided on the first inner side surface 305 and the second inner side surface 306. A limit slider 328 is provided at both ends of the horizontal lifting plate 315. A limit slot 329 is provided on the vertical positioning rod 327. The limit slider 328 is slidably installed in the limit slot 329 and slides up and down along the limit slot 329. A first infrared sensor 330 is installed on the upper surface of one of the limit sliders 328 and a second infrared sensor 331 is installed on the lower surface. The first infrared sensor 330 cooperates with the inner top surface of the limit slot 329, and the second infrared sensor 331 cooperates with the inner bottom surface of the limit slot 329. The first infrared sensor 330 and the second infrared sensor 331 are both electrically connected to the controller 332. When the horizontal lifting plate 315 moves upward, the first infrared sensor 330 is close to the inner top surface of the limiting slide groove 329, and the first infrared sensor 330 feeds back a signal to the controller 332, and the controller 332 drives the motor 312 to reverse and move the horizontal lifting plate 315 downward; when the horizontal lifting plate 315 moves downward, the first infrared sensor 330 is close to the inner bottom surface of the limiting slide groove 329, and the second infrared sensor 331 feeds back a signal to the controller 332, and the controller 332 drives the motor 312 to rotate forward and move the horizontal lifting plate 315 upward.

[0050] In this embodiment: the controller 332 drives the rotary table 4 up and down by driving the motor 312, and the controller 332 drives the rotary table 4 up and down and rotates at the same time by the electric telescopic device 324, thereby realizing the high-precision movement of the five-axis machining CNC machine tools on the market, thereby improving the level of intelligence while meeting the processing requirements of high-precision workpieces.

[0051] Embodiment 3

[0052] Based on the technical solution described in the above embodiment 2. Figure 9-10 As shown, the turntable driving mechanism 3 also includes a horizontal telescopic rod 326. The horizontal telescopic rod 326 is fixedly connected to the rear inner side surface 307, and the lower part of one side of the vertical rack 322 is fixedly connected to one end of the horizontal telescopic rod 326, so that the vertical rack 322 is more firmly in a vertical state, and when the gear 320 is meshed with the vertical rack 322, the vertical rack 322 will not shake.

[0053] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0054] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A turntable structure of a high-precision five-axis vertical CNC machine tool, comprising a five-axis CNC machine frame (1); characterized in that: A turntable body (2) is arranged on the five-axis CNC machining frame (1); a turntable driving mechanism (3) is arranged on the turntable body (2); a rotating worktable (4) is installed on the top of the turntable driving mechanism (3); The turntable driving mechanism (3) comprises a driving mechanism body (301), a horizontal lifting plate (315), a vertical lifting rod (316), a vertical rack (322), and a controller (332); The driving mechanism body (301) is fixedly mounted on the turntable body (2); a mounting cavity (302) is provided inside the driving mechanism body (301); the mounting cavity (302) comprises an inner top surface (303), an inner bottom surface (304), a first inner side surface (305), a second inner side surface (306), and a rear inner side surface (307); The controller (332) is fixedly mounted on the second inner side surface (306); a pair of vertical screw rods (308) are rotatably mounted between the inner top surface (303) and the inner bottom surface (304); a first horizontal rotating rod (309) is rotatably mounted between the first inner side surface (305) and the second inner side surface (306); A pair of L-shaped mounting plates (317) are provided on the upper surface of the horizontal lifting plate (315); a second horizontal rotating rod (318) is rotatably mounted between the pair of L-shaped mounting plates (317); a first bevel gear (319) and a gear (320) are fixedly connected to the ring side of the second horizontal rotating rod (318); A second bevel gear (321) is fixedly connected to the ring side of the lower portion of the vertical lifting rod (316); the first bevel gear (319) is meshingly connected with the second bevel gear (321); the vertical rack (322) is matched with the gear (320); A mounting plate (323) is provided on the inner top surface (303); an electric telescopic device (324) is fixedly mounted on the mounting plate (323); and the controller (332) is electrically connected to the electric telescopic device (324); An electric telescopic rod (325) is provided at the output end of the electric telescopic device (324); a horizontal telescopic rod (326) is fixedly connected to the rear inner side surface (307); The upper portion of one side of the vertical rack (322) is fixedly connected to one end of the electric telescopic rod (325); the lower portion of one side of the vertical rack (322) is fixedly connected to one end of the horizontal telescopic rod (326); The first inner side surface (305) and the second inner side surface (306) are both provided with vertical positioning rods (327); both ends of the horizontal lifting plate (315) are provided with limit sliders (328); the vertical positioning rod (327) is provided with a limit slide groove (329); the limit slide groove (328) is slidably installed in the limit slide groove (329) and slides up and down along the limit slide groove (329); A first infrared sensor (330) is installed on the upper surface of one of the limit sliding blocks (328), and a second infrared sensor (331) is installed on the lower surface; the first infrared sensor (330) cooperates with the inner top surface of the limit sliding groove (329); the second infrared sensor (331) cooperates with the inner bottom surface of the limit sliding groove (329); The first infrared sensor (330) and the second infrared sensor (331) are both electrically connected to the controller (332).

2. The turntable structure of a high-precision five-axis vertical CNC machine tool according to claim 1 is characterized in that: The ring sides at both ends of the first horizontal rotating rod (309) are fixedly connected to driving bevel gears (310); the ring side at the bottom of each vertical screw rod (308) is fixedly connected to a driven bevel gear (311); the driving bevel gear (310) is meshedly connected to the driven bevel gear (311).

3. The turntable structure of a high-precision five-axis vertical CNC machine tool according to claim 1 is characterized in that: A motor (312) is fixedly mounted on the inner bottom surface (304); the controller (332) is electrically connected to the motor (312); a driving gear (313) is fixedly connected to the ring side of the output shaft of the motor (312); a driven gear (314) is fixedly connected to the ring side of the middle part of the first horizontal rotating rod (309); and the driving gear (313) is meshingly connected to the driven gear (314).

4. The turntable structure of a high-precision five-axis vertical CNC machine tool according to claim 2 is characterized in that: The horizontal lifting plate (315) is provided with a pair of lead screw holes; the vertical lead screw (308) is meshedly connected with the lead screw holes on the horizontal lifting plate (315); the middle portion of the upper surface of the horizontal lifting plate (315) is fixedly connected with the bottom of the vertical lifting rod (316); The lower surface of the rotary workbench (4) is fixedly mounted to the top of the vertical lifting rod (316); and a through slot (333) is provided on the inner top surface (303) for the vertical lifting rod (316) to movably pass through.

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