CN214722239U

CN214722239U - Diaxon cradle formula numerical control revolving stage

Info

Publication number: CN214722239U
Application number: CN202121351809.0U
Authority: CN
Inventors: 曲维康; 吴广新; 杨锐; 刘善超
Original assignee: Yantai Global Cnc Technology Co ltd; Yantai Universal Machine Tool Accessory Group Co ltd
Current assignee: Yantai Global Cnc Technology Co ltd; Yantai Universal Machine Tool Accessory Group Co ltd
Priority date: 2021-06-18
Filing date: 2021-06-18
Publication date: 2021-11-16
Anticipated expiration: 2031-06-18

Abstract

The utility model discloses a diaxon cradle formula numerical control revolving stage, the on-line screen storage device comprises a base, but the base upper end is equipped with tilting table body and tilting support seat, be equipped with a gyration revolving stage body in the installation cavity between tilting support seat and the tilting table body, gyration revolving stage body both ends are equipped with a tilting shaft main shaft respectively, tilting shaft main shaft rotates through first revolving stage bearing and tilting support seat, tilting table body and is connected, and tilting shaft main shaft that tilting table body is located connects and is used for driving its pivoted first rotating member; the outer end of the main shaft of the left inclinable shaft is connected with an adjusting mechanism for adjusting the balance of the main shaft of the left inclinable shaft; the utility model provides a diaxon cradle formula numerical control revolving stage disposes balancing unit with adjustable at the back at tilting axis main shaft, can be under the diversified condition of cradle formula numerical control revolving stage work piece, accurate reliable elimination tilting axis unbalance loading realizes the high accuracy degree of dividing of revolving stage, reduces the motor load, improves the life and the reliability of revolving stage.

Description

Diaxon cradle formula numerical control revolving stage

Technical Field

The utility model relates to a digit control machine tool technical field specifically is a diaxon cradle formula numerical control revolving stage.

Background

The five-axis linkage numerical control machining center is used as a high-grade numerical control machine tool and can finish machining of complex workpieces with hole surfaces, curved surfaces and curves at various angles. The most common solution of five-axis numerical control machining center is to realize five-axis linkage by adopting a two-axis cradle type numerical control turntable. The workpiece is arranged on the working table surface of the numerical control rotary table, and the rotation of the inclinable shaft and the rotary shaft is completed under the control of a system. The rotating shaft is on the horizontal plane, and due to the diversity of the processed workpieces, the gravity moment of the tilting shaft is uncertain, and the gravity moment is changed along with the change of the rotating angle. The numerical control rotary table adopts worm and worm wheel to rotate and index, the gravity moment not only generates load on the tilting shaft transmission mechanism, but also has great influence on the tilting shaft indexing precision due to the elasticity and the gap of the transmission chain, and the precision reached by actual work has great difference with the detection precision.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a diaxon cradle formula numerical control revolving stage to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a two-axis cradle type numerical control turntable comprises a base, wherein a tiltable table body and a tiltable support seat are arranged at the upper end of the base, a rotary table body is arranged in a mounting cavity between the tiltable support seat and the tiltable table body, two ends of the rotary table body are respectively provided with a tiltable spindle, the tiltable spindle is rotatably connected with the tiltable support seat and the tiltable table body through a first turntable bearing, and the tiltable spindle where the tiltable table body is located is connected with a first rotating member for driving the tiltable table body to rotate;

the outer end of the main shaft of the left inclinable shaft is connected with an adjusting mechanism for adjusting the balance of the main shaft of the left inclinable shaft;

the upper end surface and the lower end surface of the rotary table body are provided with mounting holes, a workbench is arranged in the mounting holes in a matching manner, the workbench is rotatably connected with the rotary table body through a second rotary table bearing, and the workbench is connected with a second rotary piece for driving the workbench to rotate;

as a further aspect of the present invention: but first rotation piece is including the tilting shaft worm wheel of cover establishing in the tilting shaft main shaft outside and rotate the tilting shaft worm that sets up in the tilting table internal portion, tilting shaft worm and tilting shaft worm wheel intermeshing, but tilting shaft worm one end is passed tilting table external wall and is connected with the first servo motor output through the shaft coupling.

As a further aspect of the present invention: adjustment mechanism is including being close to the connecting plate that the platform body that can vert set up, the connecting plate is fixed with tilting shaft spindle end connection, it is equipped with a balancing piece to slide on the connecting plate, both ends run through has a transmission screw about the balancing piece, and the cooperation is equipped with an accommodate the lead screw in the transmission screw, the horizontal piece rotation of accommodate the lead screw upper end and connecting plate upper end is connected, and the accommodate the lead screw upper end is equipped with the pivoted hand wheel of being convenient for, the connecting plate surface is equipped with the scale parallel with balancing piece slip track.

As a further aspect of the present invention: and the balance block is also provided with a tightening screw matched with the T-shaped groove nut on the connecting plate.

As a further aspect of the present invention: the second rotating part comprises a rotating shaft worm wheel sleeved on the outer side of the workbench and a rotating shaft worm rotatably arranged on the workbench, the rotating shaft worm is meshed with the rotating shaft worm wheel, and one end of the rotating shaft worm penetrates through the outer wall of the workbench and is connected with the output end of the second servo motor.

As a further aspect of the present invention: the second rotating part also comprises a rotating shaft locking block arranged on the outer side of the lower end of the workbench.

As a further aspect of the present invention: the first rotating piece further comprises a tilting shaft locking block which is rotatably arranged on the outer side of the tilting shaft main shaft.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model provides a diaxon cradle formula numerical control revolving stage disposes balancing unit with adjustable at the back at tilting axis main shaft, can be under the diversified condition of cradle formula numerical control revolving stage work piece, accurate reliable elimination tilting axis unbalance loading realizes the high accuracy degree of dividing of revolving stage, reduces the motor load, improves the life and the reliability of revolving stage.

Drawings

Fig. 1 is a schematic front view of a two-axis cradle-type numerically controlled turntable according to an embodiment of the present invention;

fig. 2 is a cross-sectional view of a tiltable axis worm according to an embodiment of the present invention;

fig. 3 is a partial cross-sectional view of an adjustable load balance according to an embodiment of the present invention;

fig. 4 is a schematic diagram of an adjustable balanced load of a two-axis cradle-type numerical control turntable according to an embodiment of the present invention.

Wherein: 1. the device comprises a base 2, a tilting turntable body 3, a tilting shaft worm 4, a tilting shaft worm wheel 5, a first turntable bearing 6, a tilting shaft main shaft 7, a connecting plate 8, an adjusting screw rod 9, a balance block 10, a scale 11, a hand wheel 12, a tilting shaft locking block 13, a tilting turntable body 14, a second turntable bearing 15, a rotating shaft worm wheel 16, a workbench 17, a rotating shaft locking block 18, a rotating shaft worm 19, a tilting support seat 20, a locking screw 21, a T-shaped groove nut 22, a coupling 23 and a first servo motor.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

Referring to fig. 1-3, in an embodiment of the present invention, a two-axis cradle-type numerical control turntable includes a base 1, a tiltable table body 2 and a tiltable support base 19 are disposed at an upper end of the base 1, a rotary table body 13 is disposed in an installation cavity between the tiltable support base 19 and the tiltable table body 2, two ends of the rotary table body 13 are respectively provided with a tiltable spindle 6, the tiltable spindle 6 is rotatably connected to the tiltable support base 19 and the tiltable table body 2 through a first table bearing 5, and the tiltable spindle 6 where the tiltable table body 2 is located is connected to a first rotating member for driving the tiltable spindle 6 to rotate;

the first rotating member comprises a tilting shaft worm wheel 4 sleeved on the outer side of a tilting shaft main shaft 6 and a tilting shaft worm 3 rotatably arranged in the tilting table body 2, the tilting shaft worm 3 is meshed with the tilting shaft worm wheel 4, one end of the tilting shaft worm 3 penetrates through the outer wall of the tilting table body 2 and is connected with the output end of a first servo motor 23 through a coupling 22, the tilting shaft worm 3 is driven to rotate through the first servo motor 23, and the tilting shaft worm 3 drives the tilting shaft worm wheel 4 to rotate so as to drive the tilting shaft main shaft 6 to rotate, so that the rotary table body 13 can be adjusted;

the first rotating member further comprises a tilting shaft locking block 12 rotatably arranged on the outer side of the tilting shaft main shaft 6;

the outer end of the main shaft 6 of the left tilting shaft is connected with an adjusting mechanism for adjusting the balance of the main shaft;

the adjusting mechanism comprises a connecting plate 7 which is arranged close to the tiltable table body 2, the connecting plate 7 is fixedly connected with the end part of the tiltable shaft main shaft 6, a balance block 9 is arranged on the connecting plate 7 in a sliding manner, a transmission screw hole penetrates through the upper end and the lower end of the balance block 9, an adjusting screw rod 8 is arranged in the transmission screw hole in a matching manner, the upper end of the adjusting screw rod 8 is rotatably connected with a horizontal block at the upper end of the connecting plate 7, a hand wheel 11 which is convenient to rotate is arranged at the upper end of the adjusting screw rod 8, the adjusting screw rod 8 and the balance block 9 are driven to rotate relatively through the hand wheel 11, so that the balance block 9 slides on the surface of the connecting plate 7, the load balance of the tiltable shaft can be realized, and a scale 10 which is parallel to the sliding track of the balance block 9 is arranged on the surface of the connecting plate 7, thereby providing a standard for adjustment;

the balance weight 9 is also provided with a tightening screw 20 matched with a T-shaped groove nut 21 on the connecting plate 7, and the balance weight 9 can be fixed by rotating the tightening screw 20 to be matched with the T-shaped groove nut 21 in the later period, so that the load balance of the inclinable shaft can be realized;

fig. 4 is an adjustable balanced load schematic. Ga is the weight of the tilting shaft rotating part (except for the balance weight 9), La is the distance from the gravity center of the tilting shaft to the center of the tilting shaft, Gb is the weight of the workpiece, Lb is the distance from the gravity center of the workpiece to the center of the tilting shaft, Gc is the weight of the balance weight, and Lc is the distance from the gravity center of the balance weight to the center of the tilting shaft. and a is the rotation angle of the inclinable shaft. Adjusting Lc to satisfy Ga La Lb cosa + Gc Lc cosa, the inclinable axis a is in different angles, Ga La Gb Lb + Gc Lc, Lc is not changed, and both the Ga La and Gb Lc can satisfy inclinable axis load balance;

when the tilting shaft rotates at different angles, the balance weight 9, the rotary turntable body 13 and parts can be always kept in balance. The contact tooth surface of the worm wheel 4 of the tilting shaft and the worm 3 of the tilting shaft is always on one side of active rotation, the gravity center of the rotating part of the main shaft 6 of the tilting shaft passes through the axis of the tilting shaft, the load of the worm wheel and the worm only has processing force and rotary damping at different angles, and when the weight size of a workpiece is changed, the balance mechanism can be conveniently adjusted to eliminate the unbalanced load of the tilting shaft generated by gravity;

the upper end face and the lower end face of the rotary table body 13 are provided with mounting holes, a workbench 16 is arranged in the mounting holes in a matching manner, the workbench 16 is rotatably connected with the rotary table body 13 through a second rotary table bearing 14, and the workbench 16 is connected with a second rotary piece for driving the rotary table body to rotate;

the second rotating piece comprises a rotating shaft worm wheel 15 and a rotating shaft worm 18, the rotating shaft worm wheel 15 is sleeved on the outer side of the workbench 16, the rotating shaft worm 18 is rotatably arranged on the workbench 16, the rotating shaft worm 18 is meshed with the rotating shaft worm wheel 15, one end of the rotating shaft worm 18 penetrates through the outer wall of the workbench 16 and is connected with the output end of the second servo motor, the rotating shaft worm 18 is driven by the second servo motor to rotate, and the rotating shaft worm 18 drives the workbench 16 to rotate through the rotating shaft worm wheel 15, so that the rotation direction of the workbench 16 is adjusted.

The second rotating member further includes a rotating shaft locking block 17 provided outside the lower end of the table 16.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention.

Claims

1. A two-shaft cradle type numerical control rotary table comprises a base (1), wherein a tiltable table body (2) and a tiltable support seat (19) are arranged at the upper end of the base (1), a rotary table body (13) is arranged in a mounting cavity between the tiltable support seat (19) and the tiltable table body (2), and the numerical control rotary table is characterized in that two ends of the rotary table body (13) are respectively provided with a tiltable shaft main shaft (6), the tiltable shaft main shaft (6) is rotatably connected with the tiltable support seat (19) and the tiltable table body (2) through a first rotary table bearing (5), and the tiltable shaft main shaft (6) where the tiltable table body (2) is located is connected with a first rotating member for driving the tiltable table body to rotate;

the outer end of the main shaft (6) of the left tilting shaft is connected with an adjusting mechanism for adjusting the balance of the main shaft;

the rotary table is characterized in that mounting holes are formed in the upper end face and the lower end face of the rotary table body (13), a workbench (16) is arranged in the mounting holes in a matched mode, the workbench (16) is rotatably connected with the rotary table body (13) through a second rotary table bearing (14), and the workbench (16) is connected with a second rotary piece used for driving the second rotary piece to rotate.

2. The two-axis cradle type numerical control rotary table as claimed in claim 1, wherein the first rotating member comprises a tilting axis worm gear (4) sleeved outside the tilting axis main shaft (6) and a tilting axis worm (3) rotatably arranged inside the tilting rotary table body (2), the tilting axis worm (3) is meshed with the tilting axis worm gear (4), and one end of the tilting axis worm (3) penetrates through the outer wall of the tilting rotary table body (2) and is connected with the output end of the first servo motor (23) through a coupling (22).

3. The two-axis cradle type numerical control rotary table according to claim 1, wherein the adjusting mechanism comprises a connecting plate (7) arranged close to the tiltable table body (2), the connecting plate (7) is fixedly connected with the end of the tiltable spindle (6), a balance block (9) is slidably arranged on the connecting plate (7), a transmission screw hole penetrates through the upper end and the lower end of the balance block (9), an adjusting screw rod (8) is arranged in the transmission screw hole in a matching manner, the upper end of the adjusting screw rod (8) is rotatably connected with a horizontal block at the upper end of the connecting plate (7), a hand wheel (11) convenient to rotate is arranged at the upper end of the adjusting screw rod (8), and a scale (10) parallel to the sliding track of the balance block (9) is arranged on the surface of the connecting plate (7).

4. A two-axis cradle-type numerically controlled turntable according to claim 3, characterized in that the balance weight (9) is further provided with a tightening screw (20) which is matched with a T-shaped groove nut (21) on the connecting plate (7).

5. The two-axis cradle type numerical control turntable according to claim 1, wherein the second rotating member comprises a rotating shaft worm wheel (15) sleeved outside the workbench (16) and a rotating shaft worm (18) rotatably arranged on the workbench (16), the rotating shaft worm (18) is meshed with the rotating shaft worm wheel (15), and one end of the rotating shaft worm (18) penetrates through the outer wall of the workbench (16) and is connected with the output end of the second servo motor.

6. The two-axis cradle-type numerically controlled turntable according to claim 5, wherein the second rotating member further includes a rotating shaft locking piece (17) provided outside the lower end of the table (16).

7. The two-axis cradle-type numerically controlled turntable according to claim 2, wherein the first rotating member further comprises a tiltable axis locking block (12) rotatably disposed outside the tiltable axis main shaft (6).