Cradle rotary table and machining center

Abstract

The utility model provides a cradle rotary table. The cradle rotary table comprises a first connecting piece, a second connecting piece, a bridge plate body, a rotary table, a mounting seat, a first fixing seat and a second fixing seat, the first fixing seat and the second fixing seat are arranged on the mounting seat; a bridge plate body and a rotating table arranged on the bridge plate body are arranged between the first fixed seat and the second fixed seat; a first connecting piece and a second connecting piece which are detachable are arranged on the two sides of the bridge plate body respectively, and the first connecting piece, the second connecting piece and the bridge plate body are rotationally arranged between the first fixing base and the second fixing base and located above the installation base. And a hollow hole is formed in the mounting base, and the rotary table is located at the horizontal position. The utility model provides a machining center. According to the cradle rotary table provided by the technical scheme, the overall weight of a cradle can be reduced, the cradle rotary table is convenient to mount and dismount, the assembly precision is ensured, and the assembly efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to processing equipment technical field especially, it relates to a cradle rotary table and processing center. BACKGROUND

[0002] Traditional cradle rotary table C axle is a whole, and both sides A axle swing arm and C axle base are integrally casted.

[0003] For example, please see Figure 1 , the patent with the publication number CN118081406A discloses a waterproof cradle five-axis rotary table device and system, which comprises a shell 1, a drainage mechanism and a flow guide groove. The shell 1 is rotatably provided with a rotary table 2. It also includes a waterproof cover 6 and a waterproof connector inside the waterproof cover 6. In the first state, the waterproof cradle five-axis rotary table device is rotated to 0°-90°, and the liquid flows into the corresponding flow passage from the water inlet 302 of each group. Under the flow guide action of the flow passage, the liquid is affected by gravity and flows along the flow passage to the drain outlet, and is discharged from the corresponding drain outlet, preventing the liquid from entering the cradle five-axis rotary table C axle 9.

[0004] The shell 1 in the above-mentioned patent is integrally casted, the cradle is large and heavy as a whole, the casting process is complex, which increases the load of the cradle rotary table and reduces the machining precision.

[0005] Therefore, how to reduce the overall weight of the cradle, facilitate the installation and disassembly of the cradle rotary table, ensure the assembly precision and improve the assembly efficiency is an urgent problem to be solved. SUMMARY

[0006] The utility model provides a cradle rotary table and processing center, can reduce the overall weight of cradle, facilitate the installation and disassembly of cradle rotary table, ensure the assembly precision and improve the assembly efficiency.

[0007] The utility model provides a cradle rotary table, including first connecting piece, second connecting piece, bridge board body, rotary workbench, mounting seat, first fixed seat and second fixed seat;

[0008] The first fixed seat and the second fixed seat are arranged on the mounting seat;The bridge board body and the rotary workbench arranged on the bridge board body are arranged between the first fixed seat and the second fixed seat;

[0009] The first connecting piece and the second connecting piece are arranged on both sides of the bridge board body respectively, the first connecting piece, the second connecting piece and the bridge board body are rotatably arranged between the first fixed seat and the second fixed seat and above the mounting seat;

[0010] The mounting seat is provided with a hollow hole, when the rotary table is in a horizontal position, the table top of the rotary table is higher than the axis of rotation of the first connecting piece and the second connecting piece around the mounting seat, and the lower end of the rotary table at least partially extends into the hollow hole, which is used to avoid the swing of the lower end of the rotary table.

[0011] In some possible embodiments, the first connecting piece and the second connecting piece each include a vertical plate, and the two vertical plates are respectively located on the two sides of the bridge plate body, and the plate body of the vertical plate is perpendicular to the extension direction of the bridge plate body.

[0012] In some possible embodiments, the surface of the bridge plate body is provided with a fixing hole, the rotary table includes a base and a limiting body protruding outward from the periphery of the base, the rotary table passes through the fixing hole, and the rotary table is fixedly connected with the surface of the bridge plate body through the limiting body.

[0013] In some possible embodiments, the rotary table is provided, above the limiting body, with a pipeline interface; and / or

[0014] Further, a protective cover is arranged on the periphery of the base and used to cover the pipeline interface arranged on the rotary table.

[0015] In some possible embodiments, the surface of the bridge plate body is respectively provided, at the two sides, with a first notch and a second notch which are shaped to match the first connecting piece and the second connecting piece, the first connecting piece is fixed on the first notch, and the second connecting piece is fixed on the second notch.

[0016] In some possible embodiments, the bottom side and the top side of the bridge plate body are plate surfaces, the front part and the rear part of the bridge plate body are each arc-shaped, the front side and the rear side of the first connecting piece are each arc-shaped, and the front side and the rear side of the second connecting piece are each arc-shaped; and / or

[0017] The bottom of the first connecting piece is provided with a first mounting part connected with the bridge plate body, and the side of the first connecting piece is provided with a second mounting part connected with the first fixing seat; the bottom of the second connecting piece is provided with a third mounting part connected with the bridge plate body, and the side of the second connecting piece is provided with a fourth mounting part connected with the second fixing seat.

[0018] In some possible embodiments, the first fixing seat is provided with a power assembly, the power assembly includes a driving shaft and a transmission shaft which are coaxially arranged, the transmission shaft is arranged at the output end of the driving shaft, and the transmission shaft is fixedly connected with the first connecting piece; the second fixing seat is provided with a driven shaft, and the driven shaft is fixedly connected with the second connecting piece.

[0019] In some possible embodiments, the first fixed seat is further provided with an end cover, the end cover and the first connecting piece are respectively located on two sides of the first fixed seat in the axial direction, and the end cover, the driving shaft, the transmission shaft and the first connecting piece are all provided with wire through holes in communication with each other.

[0020] In some possible embodiments, the bottom of the first fixed seat is provided with a first positioning groove, the bottom of the second fixed seat is provided with a second positioning groove, two sides of the mounting seat are respectively provided with a first matching groove matched with the first positioning groove and a second matching groove matched with the second positioning groove, and the first positioning groove and the first matching groove are matched and positioned by a positioning piece, and the second positioning groove and the second matching groove are matched and positioned by a positioning piece.

[0021] The utility model also provides a machining center which comprises the cradle rotary table.

[0022] The cradle rotary table is provided with detachable first and second connecting pieces on two sides of the bridge plate body, the first and second connecting pieces and the bridge plate body are rotatably arranged between the first and second fixed seats and above the mounting seat, the first and second connecting pieces are respectively arranged on two sides of the workbench, the overall weight of the cradle is reduced, the installation and dismounting of the cradle rotary table are facilitated, the assembly precision is ensured, and the assembly efficiency is improved.

[0023] In addition, when the rotary worktable is in a horizontal position, the table top of the rotary worktable is higher than the axis of rotation of the first and second connecting pieces around the mounting seat; the rotation center of the overall cradle rotary table is close to the center of mass of the rotary worktable, the motor driving the rotation of the first and second connecting pieces and the bridge plate body does not need too much power, the rotation precision and rotation efficiency of the cradle rotary table are improved, energy consumption is low, response is fast, stability is good, and machining precision is improved. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained from the structures shown in the drawings without creative labor for those skilled in the art.

[0025] Figure 1 A schematic view of the waterproof cradle five-axis rotary table device and system provided by the prior art.

[0026] Figure 2 A schematic view of the cradle rotary table provided by an embodiment of the utility model.

[0027] Figure 3The preliminary explosion schematic view of the cradle rotary table is provided for an embodiment of the utility model.

[0028] Figure 4 The schematic view of the rotary worktable of the cradle rotary table is provided for an embodiment of the utility model.

[0029] Figure 5 The Figure 4 schematic view of the explosion.

[0030] Figure 6 The Figure 2 front view.

[0031] Figure 7 The exploded view of the first fixing seat of the cradle rotary table is provided for an embodiment of the utility model.

[0032] Element symbol explanation

[0033] 100, first connecting piece;101, first mounting part;102, second mounting part;103, wire hole;200, second connecting piece;201, third mounting part;202, fourth mounting part;300, bridge plate body;301, fixing hole;304, first matching part;305, second matching part;302, first notch;303, second notch;400, rotary worktable;401, base;402, limiting body;403, pipeline interface;500, mounting seat;510, hollow hole;520, first matching groove;530, second matching groove;540, first fixing part;550, second fixing part;800, protective cover;600, first fixing seat;601, driving shaft;602, end cover;610, first positioning groove;630, shell;6011, stator;6012, rotor;620, transmission shaft;700, second fixing seat;710, second positioning groove.

[0034] The realization, functional characteristics and advantages of the utility model will be further described with reference to the drawings in combination with embodiments. DETAILED DESCRIPTION

[0035] In the description of the utility model, it is understood that the orientation or position relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0036] In addition, the terms "first", "second", "third", "fourth", "fifth", "sixth", "seventh" and "eighth" are only used for descriptive purpose and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second", "third", "fourth", "fifth", "sixth", "seventh" and "eighth" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more than two, unless otherwise specifically limited.

[0037] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0038] In order to make the content of the present application more clear and more accurate, the present application will be described in detail in conjunction with the drawings. The drawings show examples of embodiments of the present application, wherein the same reference numerals represent the same elements. It can be understood that the proportions shown in the drawings are not the actual proportions of the present application, which are only for the purpose of illustration, and are not drawn according to the original size.

[0039] Please refer to Figure 2 The present application provides a kind of cradle rotary table, including first connecting piece 100, second connecting piece 200, bridge plate body 300, rotary workbench 400 and mounting seat 500, first fixed seat 600 and second fixed seat 700, protective cover 800.

[0040] Please refer to Figure 2 、 4And 5, the two sides of the bridge plate body 300 are respectively provided with a detachable first connecting piece 100 and a second connecting piece 200, in order to facilitate the installation and dismounting of the first connecting piece 100 and the second connecting piece 200 and the bridge plate body 300, the two sides of the surface of the bridge plate body 300 are respectively provided with a first notch 302 and a second notch 303 which are matched with the shape of the first connecting piece 100 and the second connecting piece 200, the first notch 302 and the second notch 303 are formed by the cooperation of the bridge plate body 300 and the protective cover 800, which is also convenient for the installation and positioning of the protective cover 800 and the bridge plate body 300. The first connecting piece 100 is fixed on the first notch 302, and the second connecting piece 200 is fixed on the second notch 303. It can be understood that the thickness of each part of the bridge plate body 300 remains consistent, and the size of the two sides of the bridge plate body 300 is smaller than the size of the middle, that is, the size of the first connecting piece 100 and the second connecting piece 200 in the front-back direction is smaller than the size of the rotary workbench 400 in the front-back direction. In this way, the bridge plate body 300 can be installed in the rotary workbench 400, and the area in contact with the first connecting piece 100 and the second connecting piece 200 is as small as possible, so that the size of the bridge plate body 300 can also be as small as possible.

[0041] Please refer to Figure 4 、 5The first connecting piece 100 and the second connecting piece 200 are vertically and spacedly arranged on two sides of the surface of the bridge plate body 300, the first connecting piece 100 and the second connecting piece 200 are parallel to each other, the first connecting piece 100 and the second connecting piece 200 each include a vertical plate, the two vertical plates are respectively arranged on two sides of the bridge plate body 300, the plate body of the vertical plate is perpendicular to the extension direction of the bridge plate body 300, the first connecting piece 100 and the second connecting piece 200 can be conveniently arranged on the bridge plate body 300, the weight of the cradle rotary table is reduced, the load is reduced, and the rotation efficiency of the first connecting piece 100 and the second connecting piece 200 is improved. The height of the rotation axis of the first connecting piece 100 and the second connecting piece 200 is lower than the height of the table surface of the rotary table 400 when the table surface is in a horizontal position, and the first connecting piece 100 and the second connecting piece 200 are arranged close to the rotary table 400. It can be understood that when the rotary table 400 is in a horizontal state, the height of the table surface of the rotary table 400 is higher than the height of the axis of rotation of the first connecting piece 100 and the second connecting piece 200, the rotation center of the whole cradle rotary table is close to the center of mass of the rotary table 400, the motor driving the first connecting piece 100, the second connecting piece 200 and the bridge plate body 300 to rotate does not need too much power, the rotation accuracy and rotation efficiency of the cradle rotary table are improved, the energy consumption is low, the response is fast, the stability is good, and the machining precision is improved. In addition to the first connecting piece 100, the second connecting piece 200 and the rotary table 400 arranged on the bridge plate body 300, there is no too much space, the space utilization rate of the bridge plate body 300 is improved, the size of the bridge plate body 300 is reduced, and the weight of the cradle rotary table is reduced.

[0042] Please refer to Figure 4 and 5 The surface of the bridge plate body 300 is provided with a fixing hole 301, the rotary table 400 includes a base 401 and a limiting body 402 protruding on the outer periphery of the base 401, the rotary table 400 passes through the fixing hole 301, and the rotary table 400 is fixedly connected with the surface of the bridge plate body 300 through the limiting body 402. By arranging the limiting body 402, the rotary table 400 can be prevented from descending in the fixing hole 301, and the limiting body 402 can be passed through by a bolt and fixed in a threaded hole on the bridge plate body 300, so that the rotary table 400 and the bridge plate body 300 are positioned, and subsequent installation and fixation of the rotary table 400 and the bridge plate body 300 are facilitated.

[0043] Please refer to Figure 4The rotary table 400 is arranged on the bridge plate body 300, the first connecting piece 100 and the second connecting piece 200 are respectively arranged on two sides of the rotary table 400, and the first connecting piece 100 and the second connecting piece 200 are close to the rotary table 400, so that the compactness of the cradle rotary table is improved, the integration of the cradle rotary table is improved, and the occupied space of the cradle rotary table is reduced.

[0044] Please refer to Figure 5 The rotary table 400 is arranged on the bridge plate body 300, the first connecting piece 100 and the second connecting piece 200 are respectively arranged on two sides of the rotary table 400, and the first connecting piece 100 and the second connecting piece 200 are close to the rotary table 400, so that the compactness of the cradle rotary table is improved, the integration of the cradle rotary table is improved, and the occupied space of the cradle rotary table is reduced.

[0045] Please refer to Figure 2 and 5, the bottom side and the top side of the bridge plate body 300 are plate surfaces, the front and the back of the bridge plate body 300 are arc-shaped, the front side and the back side of the first connecting piece 100 are arc-shaped, the front side and the back side of the second connecting piece 200 are arc-shaped, the bottom and the top of the second connecting piece 200 are plate surfaces, and the front side and the back side of the second connecting piece 200 are arc-shaped, so that the size of the bridge plate body 300 can be reduced as much as possible and the weight of the bridge plate body 300 can be reduced; the first connecting piece 100 and the second connecting piece 200 are arranged between the first fixing seat 600 and the second fixing seat 700 and can rotate relative to the first fixing seat 600 and the second fixing seat 700; the bottom of the first connecting piece 100 is provided with a first mounting portion 101 connected with the bridge plate body 300, and it can be understood that the first mounting portion 101 is a threaded hole; the bottom of the bridge plate body 300 is provided with a first matching portion 304 fixedly matched with the first mounting portion 101, and it can be understood that the first matching portion 304 can be a through hole; a fixing member passes through the first matching portion 304 and is fixedly matched with the first mounting portion 101, so as to fix the first connecting piece 100 to one side of the bridge plate body 300. The direction of the threaded hole is along the vertical direction. The side of the first connecting piece 100 is provided with a second mounting portion 102 connected with the first fixing seat 600, and the second mounting portion 102 can be a through hole, the direction of the through hole extending along the left-right direction; the bottom of the second connecting piece 200 is provided with a third mounting portion 201 connected with the bridge plate body 300, and the third mounting portion 201 is a threaded hole; the bottom of the bridge plate body 300 is provided with a second matching portion 305 corresponding matched with the third mounting portion 201, and it can be understood that the second matching portion 305 can be a through hole; a fixing member passes through the second matching portion 305 and is fixedly matched with the third mounting portion 201, so as to fix the second connecting piece 200 to the other side of the bridge plate body 300. The direction of the threaded hole is along the vertical direction. The side of the second connecting piece 200 is provided with a fourth mounting portion 202 connected with the second fixing seat 700, and the fourth mounting portion 202 can be a through hole, the direction of the through hole extending along the left-right direction.

[0046] Please refer to Figure 2 , 3The first fixed seat 600 is provided with a power assembly, the power assembly comprises a driving shaft 601 and a transmission shaft 620 arranged coaxially, the first fixed seat 600 further comprises a shell 630, the driving shaft 601 comprises a stator 6011 and a rotor 6012, the stator 6011 is fixed in the shell 630, the rotor 6012 is rotatably installed in the stator 6011, and the rotor 6012 is in transmission connection with the transmission shaft 620. The transmission shaft 620 is arranged at an output end of the driving shaft 601, and the transmission shaft 620 is fixedly connected with the first connecting piece 100. A driven shaft is arranged in the second fixed seat 700, and the driven shaft is fixedly connected with the second connecting piece 200. The cross-sectional dimension of the first fixed seat 600 is greater than that of the second fixed seat 700. It can be understood that the driving shaft 601 is rotatably connected with the first fixed seat 600 through a rotary table bearing, and the rotary table bearing can also provide support for the rotation of the first connecting piece 100, the second connecting piece 200, the bridge plate body 300 and the rotary workbench 400 relative to the first fixed seat 600. It can be understood that the second fixed seat 700 is provided with a bearing, the driven shaft is fixedly connected with an inner ring of the bearing, and an outer ring of the bearing is fixedly connected with the second fixed seat 700. The first fixed seat 600 and the second fixed seat 700 are both installed on the mounting seat 500. In order to facilitate the installation of the first fixed seat 600 and the second fixed seat 700 on the mounting seat 500, a first positioning groove 610 is arranged at the bottom of the first fixed seat 600, a second positioning groove 710 is arranged at the bottom of the second fixed seat 700, and a first matching groove 520 matched with the first positioning groove 610 and a second matching groove 530 matched with the second positioning groove 710 are arranged at the two sides of the mounting seat 500 respectively, the first positioning groove 610 and the first matching groove 520 are matched through a positioning piece, and the second positioning groove 710 and the second matching groove 530 are matched through a positioning piece.

[0047] The first fixed seat 600 is further provided with an end cover 602, the end cover 602 and the first connecting piece 100 are respectively located at the two sides of the first fixed seat 600 in the axial direction, and the end cover 602, the driving shaft 601, the transmission shaft 620 and the first connecting piece 100 are all provided with wire through holes 103 in communication with each other. In the embodiment, the wire through holes 103 are circular, so that more transmission lines can pass through the wire through holes 103. Through the arrangement of the wire through holes 103, it is convenient to arrange the transmission lines in the first fixed seat 600.

[0048] Please refer to Figure 3 and 6, in order to reduce the mass center of the cradle rotary table, thereby reducing the driving power when the first connecting piece 100, the second connecting piece 200, the bridge plate body 300 and the rotary worktable 400 rotate, and improving the swing speed of the first connecting piece 100, the second connecting piece 200, the bridge plate body 300 and the rotary worktable 400, the first connecting piece 100, the second connecting piece 200 and the bridge plate body 300 are located above the mounting seat 500 and can rotate relative to the mounting seat 500, and the mounting seat 500 is provided with a hollow hole 510 for avoiding the swing of the lower end of the rotary worktable 400. The table surface of the rotary worktable 400 is higher than the axis of rotation of the first connecting piece 100 and the second connecting piece 200 around the A-axis, and the lower end of the rotary worktable 400 is lower than the height of the upper surface of the mounting seat 500 when it is at the lowest point. The surface of the mounting seat 500 is provided with a first fixing part 540 and a second fixing part 550 for mounting the first fixing seat 600 and the second fixing seat 700 respectively on both sides in the left-right direction. It can be understood that the first fixing part 540 and the second fixing part 550 can be threaded holes. The middle of the surface of the mounting seat 500 in the left-right direction is provided with a hollow hole 510 for providing a space for the rotary worktable 400 to swing, thereby reducing the mass center of the first connecting piece 100, the second connecting piece 200, the bridge plate body 300 and the rotary worktable 400 as much as possible. By providing the mounting seat 500, the first fixing seat 600, the second fixing seat 700, the first connecting piece 100, the second connecting piece 200, the bridge plate body 300 and the rotary worktable 400 can be installed together on the machining table, which is convenient to disassemble and can be applied to a three-axis vertical machining center or a three-axis horizontal machining center to become a five-axis vertical machining center or a five-axis horizontal machining center, which facilitates the upgrading of a general three-axis machining center to a five-axis machining center.

[0049] The above-mentioned cradle rotary table is provided with a detachable first connecting piece 100 and a second connecting piece 200 on both sides of the bridge plate body 300, the first connecting piece 100, the second connecting piece 200 and the bridge plate body 300 are rotatably arranged between the first fixing seat 600 and the second fixing seat 700 and located above the mounting seat 500, and the first connecting piece 100 and the second connecting piece 200 are located on both sides of the rotary worktable 400, which can reduce the overall weight of the cradle, facilitate the installation and disassembly of the cradle rotary table, ensure the assembly precision and improve the assembly efficiency.

[0050] In addition, when the rotary table 400 is in the horizontal position, the table top of the rotary table 400 is higher than the rotation axis of the first connecting piece 100 and the second connecting piece 200 around the mounting base 500; the rotation center of the whole cradle rotary table is close to the center of mass of the rotary table, the motor driving the rotation of the first connecting piece 100, the second connecting piece 200 and the bridge plate body 300 does not need too much power, the rotation precision and rotation efficiency of the cradle rotary table are improved, the energy consumption is low, the response is fast, the stability is good, and the machining precision is improved.

[0051] The utility model also provides a machining center, including the cradle rotary table as above.

[0052] Obviously, those skilled in the art can make various modifications and variations to the utility model without departing from the spirit and scope of the utility model. Thus, if these modifications and variations of the utility model belong to the scope of the utility model claims and their equivalent technologies, the utility model also intends to include these modifications and variations.

[0053] The above-mentioned is only the preferred embodiment of the utility model, and of course cannot limit the right scope of the utility model, therefore, the equivalent changes made according to the utility model claims still belong to the range covered by the utility model.

Claims

1. A cradle turret characterized by, The utility model relates to a bridge plate body (300), a rotary workbench (400), a mounting seat (500), a first fixing seat (600) and a second fixing seat (700) are arranged on the first connecting piece (100) and the second connecting piece (200) of the bridge plate body (300) and are connected to each other. The first fixing seat (600) and the second fixing seat (700) are arranged on the mounting seat (500); the bridge plate body (300) and the rotary workbench (400) arranged on the bridge plate body (300) are arranged between the first fixing seat (600) and the second fixing seat (700). The first connecting piece (100) and the second connecting piece (200) are arranged on the two sides of the bridge plate body (300) and are detachable; the first connecting piece (100), the second connecting piece (200) and the bridge plate body (300) are rotatably arranged between the first fixing seat (600) and the second fixing seat (700) and above the mounting seat (500). The mounting seat (500) is provided with a hollow hole (510); when the rotary workbench (400) is in a horizontal position, the top surface of the rotary workbench (400) is higher than the axis of rotation of the first connecting piece (100) and the second connecting piece (200) around the mounting seat (500); the lower end of the rotary workbench (400) at least partially extends into the hollow hole (510), and the hollow hole (510) is used for avoiding the swing of the lower end of the rotary workbench (400).

2. The cradle turret as in claim 1, wherein, The first connecting piece (100) and the second connecting piece (200) each include a vertical plate, and the two vertical plates are arranged on the two sides of the bridge plate body (300); the plate body of the vertical plate is perpendicular to the extension direction of the bridge plate body (300).

3. The cradle turret of claim 1 wherein, The surface of the bridge plate body (300) is provided with a fixing hole (301); the rotary workbench (400) includes a base (401) and a limiting body (402) protruding from the outer periphery of the base (401); the rotary workbench (400) passes through the fixing hole (301); and the rotary workbench (400) is fixedly connected to the surface of the bridge plate body (300) through the limiting body (402).

4. The cradle turret as in claim 3, wherein, The upper portion of the rotary workbench (400) close to the limiting body (402) is provided with a pipeline interface (403); and / or The utility model also includes a protective cover (800) arranged on the outer periphery of the base (401) and used for covering the pipeline interface (403) arranged on the rotary workbench (400).

5. A cradle turret according to any one of claims 1-4, characterized in that The two sides of the surface of the bridge plate body (300) are respectively provided with a first notch (302) and a second notch (303) matched with the shapes of the first connecting piece (100) and the second connecting piece (200); the first connecting piece (100) is fixed on the first notch (302), and the second connecting piece (200) is fixed on the second notch (303).

6. A cradle turret according to any one of claims 1-4, characterized in that The bottom side and the top side of the bridge plate body (300) are plate surfaces; the front portion and the rear portion of the bridge plate body (300) are arc-shaped; the front side and the rear side of the first connecting piece (100) are arc-shaped; and the front side and the rear side of the second connecting piece (200) are arc-shaped; and / or The bottom of the first connecting piece (100) is provided with a first mounting part (101) connected with the bridge plate body (300), and the side of the first connecting piece (100) is provided with a second mounting part (102) connected with the first fixing base (600); the bottom of the second connecting piece (200) is provided with a third mounting part (201) connected with the bridge plate body (300), and the side of the second connecting piece (200) is provided with a fourth mounting part (202) connected with the second fixing base (700).

7. The cradle turret as in claim 6, wherein, The first fixing base (600) is provided with a power assembly, which comprises a driving shaft (601) and a transmission shaft (620) coaxially arranged, the transmission shaft (620) is arranged on the output end of the driving shaft (601), and the transmission shaft (620) is fixedly connected with the first connecting piece (100); a driven shaft is arranged in the second fixing base (700), and the driven shaft is fixedly connected with the second connecting piece (200).

8. The cradle turret as in claim 7, wherein, The first fixing base (600) is further provided with an end cover (602), the end cover (602) and the first connecting piece (100) are respectively located on the two sides of the first fixing base (600) in the axial direction, and the end cover (602), the driving shaft (601), the transmission shaft (620) and the first connecting piece (100) are all provided with wire holes (103) in communication with each other.

9. The cradle turret according to any one of claims 1 to 4, wherein The bottom of the first fixing base (600) is provided with a first positioning groove (610), the bottom of the second fixing base (700) is provided with a second positioning groove (710), the two sides of the mounting base (500) are respectively provided with a first matching groove (520) matched with the first positioning groove (610) and a second matching groove (530) matched with the second positioning groove (710), the first positioning groove (610) and the first matching groove (520) are matched and positioned by a positioning piece, and the second positioning groove (710) and the second matching groove (530) are matched and positioned by a positioning piece.

10. A machining center, characterized by The cradle rotary table comprises a mounting base (500), a first connecting piece (100), a second connecting piece (200), a first fixing base (600) and a second fixing base (700), wherein the mounting base (500) is provided with a first connecting piece (100) and a second connecting piece (200), the first connecting piece (100) is connected with the first fixing base (600), and the second connecting piece (200) is connected with the second fixing base (700).

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