阅读说明：本技术 一种用于金属切削机床ab摆头的双驱结构 (Double-drive structure for AB swing head of metal cutting machine tool ) 是由 姜楠 佟琨 林青 杨天奇 潘骁 白旭 刘丽英 周冰 张险峰 王明智 陈帅 高崇 于 2019-09-25 设计创作，主要内容包括：一种用于金属切削机床AB摆头的双驱结构,解决现有技术存在的传动效率低,摆动速度慢,传动机构磨损严重,磨损后的调整过程繁琐,影响生产效率的问题。包括由连接座主体构成的固定连接座,其特征在于：固定连接座的前侧设置有转动支撑座,转动支撑座通过B轴铰接孔与固定连接座的连接B轴转动连接,且转动支撑座后侧的上部与B轴双驱机构的输出端相连；转动支撑座的主轴箱转动槽内设置的主轴箱体,通过连接A轴与转动槽两侧壁上的A轴铰接孔转动连接；转动支撑座一侧设置的A轴双驱机构的输出端与主轴箱体侧部相连。其设计合理,结构紧凑,传动效率高,摆动速度快,可有效消除机构间隙、磨损小,驱动力大,能够确保生产效率。(The utility model provides a two structures of driving for metal cutting lathe AB yaw, solves the transmission efficiency that prior art exists and hangs down, and swing speed is slow, and drive mechanism wearing and tearing are serious, and the adjustment process after wearing and tearing is loaded down with trivial details, influences production efficiency's problem. Including the fixed connection seat who constitutes by the connecting seat main part, its characterized in that: a rotary supporting seat is arranged on the front side of the fixed connecting seat, the rotary supporting seat is in rotary connection with a connecting shaft B of the fixed connecting seat through a shaft B hinge hole, and the upper part of the rear side of the rotary supporting seat is connected with the output end of the shaft B double-drive mechanism; a spindle box body arranged in a spindle box rotating groove of the rotating support seat is rotatably connected with an A-axis hinge hole on two side walls of the rotating groove through a connecting A-axis; the output end of the A-shaft double-drive mechanism arranged on one side of the rotary supporting seat is connected with the side part of the main shaft box body. The mechanism has the advantages of reasonable design, compact structure, high transmission efficiency, high swinging speed, capability of effectively eliminating mechanism gaps, small abrasion, large driving force and capability of ensuring the production efficiency.)

1. The utility model provides a two structures of driving for metal cutting lathe AB yaw, includes fixed connection seat (1) that links to each other with the lathe main part, its characterized in that: the fixed connecting seat (1) is composed of a connecting seat main body (13), a connecting B shaft (14) is arranged at the lower part of the front side of the connecting seat main body (13), a B shaft double-driving mechanism (2) is arranged at the upper part of the connecting seat main body (13), and the B shaft double-driving mechanism (2) is connected with the upper part of the front side of the connecting seat main body (13) through a B shaft double-driving installation box body (16); a rotary supporting seat (3) is arranged on the front side of the fixed connecting seat (1), the rotary supporting seat (3) is composed of a supporting seat main body (7), a main spindle box rotating groove (8) is arranged on the front side of the supporting seat main body (7), two side walls of the main spindle box rotating groove (8) are respectively provided with an A-axis hinge hole (9), and the lower part of the rear side of the supporting seat main body (7) is provided with a B-axis hinge hole (12); the rotary supporting seat (3) is rotatably connected with a connecting B shaft (14) of the fixed connecting seat (1) through a B shaft hinge hole (12), and the upper part of the rear side of the rotary supporting seat (3) is connected with the output end of the B shaft double-drive mechanism (2); a main shaft box body (5) is arranged in a main shaft box rotating groove (8) of the rotating support seat (3), a main shaft driving motor (6) is arranged at the upper part of the main shaft box body (5), and a connecting shaft A (24) is arranged at the lower part of the main shaft box body (5); the spindle box body (5) is respectively and rotatably connected with the A-shaft hinge holes (9) on the two side walls of the spindle box rotating groove (8) by connecting the two end parts of the A-shaft (24); meanwhile, one side of the rotating supporting seat (3) is further provided with an A-shaft double-drive mechanism (4), the A-shaft double-drive mechanism (4) is connected with the side wall of the supporting seat main body (7) through an A-shaft double-drive mounting hole (10), and the A-shaft double-drive mechanism (4) stretches into the output end of the inner side of the spindle box rotating groove (8) and is connected with the side portion of the spindle box body (5).

2. The dual drive structure for a metal cutting machine AB pendulum head of claim 1, characterized in that: the double-drive mechanism (4) of A axle includes two double-drive motors (19) of A axle, and the output of each double-drive motor (19) of A axle all links to each other with double-drive speed reducer (20) of A axle, and A axle drive gear (21) that set up respectively on the output shaft of two double-drive speed reducer (20) of A axle stretch into the headstock rotation groove (8) that rotate supporting seat (3) via double-drive mounting hole (10) of A axle in, and two A axle drive gear (21) simultaneously with the fixed A axle ring gear (22) that set up of main shaft box (5) lateral part mesh mutually.

3. The dual drive structure for a metal cutting machine AB pendulum head of claim 1, characterized in that: the B-axis double-drive mechanism (2) comprises two B-axis double-drive motors (27), the output ends of the B-axis double-drive motors (27) are connected with a B-axis double-drive speed reducer (28), B-axis drive gears (29) respectively arranged on the output shafts of the two B-axis double-drive speed reducers (28) extend into the B-axis double-drive mounting box body (16), and the two B-axis drive gears (29) are simultaneously meshed with a B-axis gear ring (15) movably arranged on the lower side of the B-axis double-drive mounting box body (16); meanwhile, the B-axis gear ring (15) is connected with a gear ring connecting part (11) arranged on the upper part of the rear side of the support seat main body (7) of the rotary support seat (3).

4. The double drive structure for an AB swing head of a metal cutting machine as claimed in claim 3, wherein: a protective cover (17) is arranged in front of a B-axis gear ring (15) on the lower side of a B-axis double-drive mounting box body (16) of the fixed connecting seat (1), and protective covers (18) are respectively arranged on two sides of the B-axis gear ring (15).

5. The dual drive structure for a metal cutting machine AB pendulum head of claim 1, characterized in that: two output ends of the A-shaft double-drive mechanism (4) are respectively connected with an A-shaft double-drive mounting hole (10) on the side wall of the rotary supporting seat (3) through an eccentric connecting disc (23); two output ends of the B-axis double-drive mechanism (2) are also connected with a B-axis double-drive mounting box body (16) on the upper part of the front side of the fixed connecting seat (1) through an eccentric connecting disc (23) respectively.

6. The double drive structure for an AB swing head of a metal cutting machine as claimed in claim 5, wherein: the eccentric connecting disc (23) is composed of a connecting disc body (30), a clamping boss (34) convenient for connection and positioning is arranged on one side of the connecting disc body (30), a driving shaft hole (32) for the output end of the double-drive mechanism to pass through is arranged in the middle of the connecting disc body (30), and the circle center of the driving shaft hole (32) is not coincident with the circle center of the connecting disc body (30); the disk surface of the connecting disk body (30) is provided with a plurality of groups of rotary adjusting through holes (31) which are arranged on the same circumference around the circle center of the connecting disk body (30) at equal included angles, and meanwhile, the inner side of the circle of rotary adjusting through holes (31) and the disk surface of the connecting disk body (30) are provided with a plurality of groups of connecting screw holes (33) which are arranged on the other circumference around the circle center of the driving shaft hole (32) at equal included angles.

Technical Field

The invention belongs to the technical field of machining equipment, and particularly relates to a double-drive structure for an AB swing head of a metal cutting machine tool, which has the advantages of high transmission efficiency, high swing speed, capability of effectively eliminating mechanism gaps, small abrasion, large driving force and capability of ensuring production efficiency.

Background

At present, the technical development of five-axis metal cutting machine tools is mature, and five-axis linkage can be realized so as to finish the machining work of various complex plane and curved surface parts. In addition, the swing head of the five-axis metal cutting machine tool is an important component in the whole machine tool, and in the machining process of parts, the AB axis of the swing head is constantly changed to drive the swing head to swing in multiple dimensions in a reciprocating mode, so that the parts are cut according to machining requirements. However, most of the existing swing head internal driving structures adopt a worm and gear type transmission structure, and the traditional transmission structure is convenient to manufacture and support, but the transmission efficiency is low, and the swing speed of the AB swing head is slow; meanwhile, the transmission mechanism is seriously abraded, the manual adjustment process after abrasion is complicated, and the production efficiency is influenced. Therefore, the driving structure of the swing head AB of the metal cutting machine tool in the prior art needs to be improved.

Disclosure of Invention

Aiming at the problems, the invention provides the double-drive structure for the AB swing head of the metal cutting machine tool, which has high transmission efficiency, high swing speed, small abrasion and large driving force, can effectively eliminate the mechanism clearance and can ensure the production efficiency.

The technical scheme adopted by the invention is as follows: this a two structures of driving for metal cutting lathe AB yaw include the fixed connection seat that links to each other with the lathe main part, its characterized in that: the fixed connecting seat is composed of a connecting seat main body, a connecting B shaft is arranged at the lower part of the front side of the connecting seat main body, a B shaft double-drive mechanism is arranged at the upper part of the connecting seat main body, and the B shaft double-drive mechanism is connected with the upper part of the front side of the connecting seat main body through a B shaft double-drive mounting box body; the front side of the fixed connecting seat is provided with a rotating supporting seat, the rotating supporting seat is composed of a supporting seat main body, the front side of the supporting seat main body is provided with a main spindle box rotating groove, two side walls of the main spindle box rotating groove are respectively provided with an A-axis hinge hole, and the lower part of the rear side of the supporting seat main body is provided with a B-axis hinge hole; the rotating support seat is rotatably connected with a connecting shaft B of the fixed connection seat through a shaft B hinge hole, and the upper part of the rear side of the rotating support seat is connected with the output end of the shaft B double-drive mechanism; a spindle box body is arranged in a spindle box rotating groove of the rotating supporting seat, a spindle driving motor is arranged at the upper part of the spindle box body, and a connecting shaft A is arranged at the lower part of the spindle box body; the spindle box body is respectively and rotatably connected with the hinge holes of the shaft A on the two side walls of the spindle box rotating groove by connecting the two end parts of the shaft A; simultaneously, one side of rotating the supporting seat still is provided with the two mechanisms that drive of A axle, and the two mechanisms that drive of A axle link to each other with the lateral wall of supporting seat main part through the two mounting holes that drive of A axle to, the two mechanisms that drive of A axle stretch into the output that the headstock rotated the inslot side and link to each other with the lateral part of headstock box.

The double-drive mechanism of A axle includes that two A axle double-drive motors, and the output of each A axle double-drive motor all links to each other with the double-drive speed reducer of A axle, and the A axle drive gear that sets up respectively on the output shaft of two A axle double-drive speed reducers stretches into the headstock rotation inslot that rotates the supporting seat via the double-drive mounting hole of A axle, and two A axle drive gears simultaneously with the fixed A axle ring gear that sets up of headstock side portion mesh mutually. The two A-shaft driving gears are driven to be synchronously meshed with the A-shaft gear ring through the two groups of A-shaft double-drive motors and the A-shaft double-drive speed reducer, and the main shaft box is driven to rotate around the axis connected with the A shaft in a reciprocating mode.

The B-axis double-drive mechanism comprises two B-axis double-drive motors, the output ends of the B-axis double-drive motors are connected with B-axis double-drive speed reducers, B-axis drive gears respectively arranged on the output shafts of the two B-axis double-drive speed reducers extend into the B-axis double-drive mounting box body, and the two B-axis drive gears are simultaneously meshed with B-axis gear rings movably arranged on the lower side of the B-axis double-drive mounting box body; meanwhile, the B-axis gear ring is connected with a gear ring connecting part arranged on the upper part of the rear side of the supporting seat main body of the rotary supporting seat. The two B-shaft driving gears are driven to be synchronously meshed with the B-shaft gear ring by the driving of the two groups of B-shaft double-driving motors and the B-shaft double-driving speed reducer, so that the rotating supporting seat and a main shaft box body in a main shaft box rotating groove are driven to rotate around the axis of the connecting B shaft in a reciprocating manner.

A protective cover is arranged in front of a B-axis gear ring on the lower side of the B-axis double-drive mounting box body of the fixed connecting seat, and protective covers are respectively arranged on two sides of the B-axis gear ring. In order to carry out effectual protection, hoisting device's life to the inside and the B axle ring gear of the two installation boxes that drive of B axle.

Two output ends of the A-shaft double-drive mechanism are respectively connected with an A-shaft double-drive mounting hole on the side wall of the rotary supporting seat through an eccentric connecting disc; and two output ends of the B-axis double-drive mechanism are also connected with the B-axis double-drive mounting box body on the upper part of the front side of the fixed connecting seat through eccentric connecting discs respectively. The fit clearance of two output ends of the A-axis double-drive mechanism or the B-axis double-drive mechanism is correspondingly adjusted by adjusting the eccentric connecting disc, and the operation reliability of the device is effectively improved.

The eccentric connecting disc is composed of a connecting disc body, a clamping boss convenient for connection and positioning is arranged on one side of the connecting disc body, a driving shaft hole for the output end of the double-drive mechanism to penetrate through is arranged in the middle of the connecting disc body, and the circle center of the driving shaft hole is not coincident with the circle center of the connecting disc body; the disk surface of the connecting disk body is provided with a plurality of groups of rotary adjusting through holes which are arranged on the same circumference around the circle center of the connecting disk body at equal included angles, and meanwhile, the inner side of the rotary adjusting through hole is provided with a plurality of groups of connecting screw holes which are arranged on the other circumference around the circle center of the driving shaft hole at equal included angles. So as to connect the eccentric connecting disc with the double-drive mechanism through the connecting screw hole, and the eccentric connecting disc is adjustably connected with the rotating supporting seat and the fixed connecting seat by utilizing the rotary adjusting through hole.

The invention has the beneficial effects that: the invention adopts the fixed connecting seat consisting of the connecting seat main body, the lower part of the front side of the connecting seat main body is provided with the connecting B shaft, and the upper part of the connecting seat main body is provided with the B shaft double-drive mechanism; a rotary supporting seat consisting of a supporting seat main body is arranged at the front side of the fixed connecting seat, and a spindle box rotary groove is arranged at the front side of the supporting seat main body; the rotating support seat is rotatably connected with a connecting shaft B of the fixed connection seat through a shaft B hinge hole, and the upper part of the rear side of the rotating support seat is connected with the output end of the shaft B double-drive mechanism; a spindle box body is arranged in a spindle box rotating groove of the rotating support seat, a spindle driving motor is arranged at the upper part of the spindle box body, and the spindle box body is respectively and rotatably connected with the A shaft hinge holes on the two side walls of the spindle box rotating groove by connecting the two end parts of the A shaft; the A-shaft double-drive mechanism arranged on one side of the rotary supporting seat is connected with the side wall of the supporting seat main body through the A-shaft double-drive mounting hole, and the A-shaft double-drive mechanism extends into the structural form that the output end of the inner side of the main spindle box rotary groove is connected with the side part of the main spindle box body, so that the structure is reasonable in design, compact in structure, high in transmission efficiency and high in swinging speed, the gap of the mechanism can be effectively eliminated, the abrasion is small, the time for manual auxiliary adjustment is saved, the driving force is large, and the production.

Drawings

FIG. 1 is a schematic diagram of an embodiment of the present invention.

Fig. 2 is a schematic structural view of the rotary support seat in fig. 1.

Fig. 3 is a view from direction a of fig. 2.

Fig. 4 is a schematic structural view of the fixed connection seat in fig. 1.

Fig. 5 is a schematic diagram of a structure of the a-axis dual drive mechanism in fig. 1.

Fig. 6 is a partial structural view of the a-axis ring gear portion in fig. 5.

Fig. 7 is a schematic structural diagram of the B-axis dual drive mechanism in fig. 1.

Fig. 8 is a schematic view of a structure of the eccentric coupling disk of fig. 5 and 7.

Fig. 9 is a cross-sectional view taken along line B-B of fig. 8.

The sequence numbers in the figures illustrate: 1 fixed connection seat, 2B axle double-drive mechanism, 3 rotation supporting seats, 4A axle double-drive mechanism, 5 main shaft box, 6 main shaft driving motors, 7 supporting seat main body, 8 main shaft box rotating groove, 9A axle hinge hole, 10A axle double-drive mounting hole, 11 gear ring connecting part, 12B axle hinge hole, 13 connecting seat main body, 14 connecting B axle, 15B axle gear ring, 16B axle double-drive mounting box, 17 protective cover, 18 protective cover, 19A axle double-drive motor, 20A axle double-drive speed reducer, 21A axle driving gear, 22A axle gear ring, 23 eccentric connection disc, 24 connecting A axle, 25 lubrication gear, 26 lubrication oil hole, 27B axle double-drive motor, 28B axle double-drive speed reducer, 29B axle driving gear, 30 connecting disc body, 31 gyration adjusting through hole, 32 driving axle hole, 33 connecting screw hole, 34 joint boss.

Detailed Description

The specific structure of the present invention will be described in detail with reference to FIGS. 1 to 9. The double-drive structure for the AB swing head of the metal cutting machine tool comprises a fixed connecting seat 1 connected with a machine tool main body, wherein the fixed connecting seat 1 is composed of a connecting seat main body 13, and a connecting B shaft 14 which is longitudinally arranged is arranged at the lower part of the front side of the connecting seat main body 13. The upper part of the connecting seat main body 13 is provided with a B-axis double-drive mechanism 2, the B-axis double-drive mechanism 2 comprises two B-axis double-drive motors 27 arranged side by side, and the output end of each B-axis double-drive motor 27 is connected with a B-axis double-drive speed reducer 28; the output shafts of the two B-shaft double-drive speed reducers 28 are respectively provided with a B-shaft drive gear 29. The two B-axis driving gears 29 extend into the B-axis double-drive mounting box body 16 at the upper part of the front side of the connecting seat main body 13; and, two B axle drive gears 29 mesh with the arc B axle gear ring 15 that is movably arranged at the lower opening of the B axle double-drive mounting box 16.

With the arc B axle ring gear 15 of two B axle drive gears 29 looks meshing of B axle dual drive mechanism 2, link to each other with the ring gear connecting portion 11 that the supporting seat main part 7 rear side upper portion that rotates supporting seat 3 set up, and then through the cooperation drive of two sets of B axle dual drive motors 27 and B axle dual drive speed reducer 28, drive the synchromesh of two B axle drive gears 29 and B axle ring gear 15 to order to rotate supporting seat 3 and the main shaft box 5 in its main shaft box rotating groove 8, together round the axis reciprocating rotation of connecting B axle 14. In order to prolong the service life of the device, a protective cover 17 is arranged in front of a B-axis gear ring 15 on the lower side of a B-axis double-drive mounting box body 16 of the fixed connecting seat 1; meanwhile, two sides of the B-axis gear ring 15 are respectively provided with a protective cover 18 to effectively protect the inside of the B-axis double-drive mounting box 16 and the B-axis gear ring 15.

The driving output ends of two B-axis double-drive speed reducers 28 of the B-axis double-drive mechanism 2 are respectively connected with a B-axis double-drive mounting box body 16 at the upper part of the front side of the fixed connecting seat 1 through an eccentric connecting disc 23. The eccentric connecting disc 23 is composed of a connecting disc body 30, a clamping boss 34 convenient for connection and positioning is arranged on one side of the connecting disc body 30, a driving shaft hole 32 for the output ends of the two B-axis double-drive speed reducers 28 to penetrate is arranged in the middle of the connecting disc body 30, and the circle center of the driving shaft hole 32 is not coincident with the circle center of the connecting disc body 30. The disc surface of the connecting disc body 30 is provided with a plurality of groups of rotary adjusting through holes 31 which are arranged on the same circumference at equal included angles around the circle center of the connecting disc body 30; meanwhile, a plurality of groups of connecting screw holes 33 which are arranged on the other circumference at equal included angles around the circle center of the driving shaft hole 32 are arranged on the inner side of the circle of rotary adjusting through hole 31 and the disc surface of the connecting disc body 30. And then the eccentric connecting disc 23 is connected with the B-axis double-drive speed reducer 28 of the B-axis double-drive mechanism 2 through a connecting screw hole 33, and the eccentric connecting disc 23 is adjustably connected with the B-axis double-drive mounting box body 16 of the fixed connecting seat 1 through a rotary adjusting through hole 31. Therefore, the meshing clearance between the two B-axis driving gears 29 of the B-axis double-drive mechanism 2 and the B-axis gear ring 15 is adjusted correspondingly by adjusting the eccentric connecting disc 23, and the running reliability of the device is effectively improved.

A rotary supporting seat 3 is arranged on the front side of the fixed connecting seat 1, the rotary supporting seat 3 is composed of a supporting seat main body 7, a main spindle box rotating groove 8 is arranged on the front side of the supporting seat main body 7, and two side walls of the main spindle box rotating groove 8 are respectively provided with an A-axis hinge hole 9; the lower part of the rear side of the supporting seat main body 7 is provided with a B-axis hinge hole 12. The rotary supporting seat 3 is rotatably connected with a B shaft 14 connected with the fixed connecting seat 1 through a rotary bearing arranged in a B shaft hinge hole 12, and a gear ring connecting part 11 at the upper part of the rear side of the rotary supporting seat 3 is connected with a B shaft gear ring 15 at the output end of the B shaft double-drive mechanism 2. A main shaft box body 5 is also rotatably arranged in the main shaft box rotating groove 8 of the rotating support seat 3, a main shaft driving motor 6 is arranged at the upper part of the main shaft box body 5, and a connecting A shaft 24 which is transversely arranged is arranged at the lower part of the main shaft box body 5.

The spindle box body 5 is respectively and rotatably connected with the A-axis hinge holes 9 on the two side walls of the spindle box rotating groove 8 of the rotating support seat 3 through connecting the two end parts of the A-axis 24. Meanwhile, one side of the rotary supporting seat 3 is also provided with an A-shaft double-drive mechanism 4, the A-shaft double-drive mechanism 4 comprises two A-shaft double-drive motors 19 which are arranged side by side, the output end of each A-shaft double-drive motor 19 is connected with an A-shaft double-drive speed reducer 20, and an A-shaft driving gear 21 which is respectively arranged on the output shafts of the two A-shaft double-drive speed reducers 20 extends into a spindle box rotary groove 8 of the rotary supporting seat 3 through an A-shaft double-drive mounting hole 10; and the two A-axis driving gears 21 are simultaneously meshed with an arc-shaped A-axis gear ring 22 fixedly arranged on the side part of the main spindle box 5. For the purpose of fully lubricating the driving gear and the gear ring and facilitating smooth transmission, a lubricating gear 25 (for example, the gear 25 can be lubricated by felt) is respectively arranged on the A-axis gear ring 22 and the B-axis gear ring 15, and a lubricating oil hole 26 is arranged on the side wall of the hollow rotating shaft of the lubricating gear 25. According to specific use requirements, an A-axis encoder which can measure the position of the A-axis and feed data back to a numerical control system is arranged on a connecting A-axis 24 of the main spindle box 5; a B-axis encoder is arranged on a connecting B-axis 14 of the fixed connecting seat 1.

The two A axle double-drive speed reducer 20's of the double-wheel mechanism 4 of A axle drive output end links to each other with the double-wheel mounting hole 10 of A axle on the 3 lateral walls of rotation supporting seat through eccentric connection pad 23 respectively, promptly: the eccentric connecting disc 23 is connected with an A-shaft double-drive speed reducer 20 of the A-shaft double-drive mechanism 4 through a connecting screw hole 33, and the eccentric connecting disc 23 is adjustably connected with an A-shaft double-drive mounting hole 10 of the rotary supporting seat 3 through a rotary adjusting through hole 31; so as to correspondingly adjust the meshing clearance between the two A-axis driving gears 21 and the A-axis gear ring 22 of the A-axis double-drive mechanism 4 by utilizing the adjustment of the eccentric connecting disc 23. Therefore, the two A-shaft double-drive motors 19 and the A-shaft double-drive speed reducer 20 are driven to be matched with each other to drive the two A-shaft drive gears 21 to be synchronously meshed with the A-shaft gear ring 22, so that the spindle box body 5 is driven to rotate in a reciprocating manner around the axis of the connecting A shaft 24 in the spindle box rotating groove 8 of the rotating support base 3.

When the double-drive structure for the AB swing head of the metal cutting machine tool is used, firstly, the whole AB swing head double-drive structure is connected with a machine tool main body through the fixed connecting seat 1, and the main spindle box 5 with the spindle driving motor 6 is rotatably arranged in the main spindle box rotating groove 8 of the rotating supporting seat 3. In the machining process of parts, two A-shaft double-drive motors 19 and two A-shaft double-drive speed reducers 20 are driven to be matched and driven to drive two A-shaft drive gears 21 to be synchronously meshed with an A-shaft gear ring 22, and a spindle box body 5 is driven to rotate in a reciprocating mode around the axis of a connecting A shaft 24 and in a spindle box rotating groove 8 of a rotating support base 3. Meanwhile, two sets of B-axis double-drive motors 27 and B-axis double-drive reducers 28 are used for driving two B-axis drive gears 29 to synchronously mesh with the B-axis gear ring 15, so that the rotary support base 3 and the spindle box body 5 in the spindle box rotary groove 8 thereof are driven to rotate back and forth around the axis connected with the B-axis 14. Further, the oscillating head A, B is driven to oscillate reciprocally in a plurality of dimensions by the constant change of the axis thereof, so as to cut the part according to the machining requirements.