CN113118791A

CN113118791A - Five rotary worktable

Info

Publication number: CN113118791A
Application number: CN202110552362.1A
Authority: CN
Inventors: 陈国荣
Original assignee: Zhejiang Guanxinhong Intelligent Technology Co ltd
Current assignee: Zhejiang Guanxinhong Intelligent Technology Co ltd
Priority date: 2021-05-20
Filing date: 2021-05-20
Publication date: 2021-07-16

Abstract

The invention provides a five-axis rotary workbench, and belongs to the technical field of numerical control machines. The five-axis rotary worktable solves the technical problems that the structure of the existing five-axis rotary worktable is complicated and the like. The five-axis rotary worktable comprises a mounting seat, and further comprises two independent fixed fourth shafts and a movable fourth shaft, wherein the fixed fourth shafts are fixed on the mounting seat, a turntable of the fixed fourth shafts is a switching disc, the switching disc is vertically arranged, a shell of the movable fourth shaft is fixed on the switching disc, the turntable of the movable fourth shaft is a working turntable, the working turntable is arranged upwards, and the axis of the working turntable is intersected with the axis of the switching disc when the working turntable is in a horizontal state. The invention has the advantage of simple structure.

Description

Five rotary worktable

Technical Field

The invention belongs to the technical field of numerical control machines and relates to a five-axis rotary workbench.

Background

The five-axis rotary worktable is mainly applied to a numerical control machine tool, is used for installing a workpiece to be machined, can give five degrees of freedom to the workpiece when the workpiece is machined, and achieves the purpose of machining a complex workpiece by the numerical control machine tool.

The existing five-axis rotary worktables are all designed independently, for example, five-axis linkage machine tool accessories and five-axis linkage machine tools [ application number 202021922528.1 ] disclosed in Chinese patent documents comprise a first axis assembly, a second axis assembly, a third axis assembly and five-axis linkage machine tool accessories, wherein the accessories comprise a fourth axis assembly and a fifth axis assembly connected with the fourth axis assembly; the fourth shaft assembly comprises a base, a fourth shaft, a shell and the like, the fourth shaft shell is covered on the base and forms a fourth shaft space with an opening together with the base, and the fourth shaft space is provided with a fourth speed reducer assembly, a fourth servo motor, a power line pipe fixedly connected with the main joint and the like; the fifth shaft assembly comprises a fifth shaft shell, and a fifth speed reducer assembly, a fifth servo motor and the like are arranged in the fifth shaft shell. The fifth shaft assembly includes a fourth shaft assembly and a fifth shaft assembly, and is assembled in a housing, which requires a parallel design of the fourth shaft assembly and the fifth shaft assembly to achieve linkage, resulting in complicated structure and high cost.

Disclosure of Invention

The invention aims to solve the problems in the prior art, provides a five-axis rotary workbench, and aims to realize the five-axis rotary workbench through a simple structure.

The purpose of the invention can be realized by the following technical scheme:

the utility model provides a five-axis swivel work head, includes the mount pad, its characterized in that, five-axis swivel work head still include two independent decide the fourth shaft and move the fourth shaft, decide the fourth shaft and fix on the mount pad, the carousel of deciding the fourth shaft is the switching dish, the vertical setting of switching dish, the shell of moving the fourth shaft is fixed on the switching dish, the carousel of moving the fourth shaft is the work carousel, the work carousel sets up the work carousel is in when the horizontality the axis of work carousel is crossing with the axis of switching dish.

The mounting seat is mounted on the table board of the machine tool, the adapter plate of the fixed fourth shaft can rotate to drive the movable fourth shaft to rotate in the vertical direction, so that the working turntable of the movable fourth shaft can swing, and meanwhile, the working turntable of the movable fourth shaft can independently rotate back and forth, so that the workpiece can rotate and swing; through the combination of the two independent fixed fourth shafts and the movable fourth shafts, the driving structures of the working turntable and the switching disk do not need to be developed additionally, the structure is simpler, and the cost is relatively lower; during assembly, only two independent fixed fourth shafts and two independent movable fourth shafts are required to be fixed, so that the assembly is simpler; the fixed fourth shaft and the movable fourth shaft are relatively independent, and are not influenced with each other during operation, so that the operation is more stable, the service life is long, and the overhaul is more convenient.

In foretell five swivel work head, the switching dish is including the fixed part that is located the upside and the swing portion that is located the downside, a plurality of fixed orificess have been seted up on the fixed part, the fixed orifices aligns with the upside position of the spiale two of deciding the fourth shaft, fixed part and decide between the spiale two of fourth shaft through the bolt fastening, the swing portion supports with the spiale terminal surface laminating of deciding the fourth shaft and leans on, move the shell fixed mounting of fourth shaft on the swing portion. Realize the fixed connection of switching dish and the spiale two of deciding the fourth shaft through this structure, the spiale two of definite fourth shaft can the swing back and forth when using, does not do the rotation action, therefore the fixed part can satisfy structural strength with the upside of spiale two is fixed.

In the five-axis rotary table, a thickening block is fixed between the housing of the movable fourth shaft and the swing part. The distance between the working turntable and the switching disk is increased through the thickening blocks, so that a large workpiece to be processed can be installed on the working turntable.

In the five-axis rotary worktable, the swinging part is rectangular, the thickening block is cuboid, and a yielding groove is formed in the middle of one side of the thickening block, which faces the swinging part. The contact surface between the swinging part and the thickening block is large, so that the movable fourth shaft is stably connected with the adapter plate; the groove of stepping down can reduce the binding face of thickening piece and swing portion to avoid leading to the thickening piece to appear inclining in vertical direction because of machining error, thereby guarantee to move the work carousel initial position of fourth axle and can be in the horizontality, guarantee the machining precision.

In the five-axis rotary workbench, a plurality of first countersunk holes are formed in the thickening block, a plurality of first threaded holes are formed in the shell of the movable fourth shaft, and the thickening block and the shell of the movable fourth shaft are fixed after penetrating through the first countersunk holes through countersunk bolts and then being screwed with the first threaded holes; the swing portion is provided with a plurality of second counter bores, the thickening block is provided with a plurality of second threaded holes, and the swing portion and the thickening block are fixed after penetrating through the second counter bores through counter bolts and then being in threaded connection with the second threaded holes. The thickening block is connected with the shell and the swinging part of the movable fourth shaft through the structure.

In the five-axis rotary workbench, a driving motor is arranged on one side of the movable fourth shaft, and one side, opposite to the driving motor, of the shell of the movable fourth shaft is fixedly connected with the adapter plate. The driving motor is located and moves the longer axis of fourth shaft length, moves the shorter axis of fourth shaft length and makes a round trip to rotate along with the switching dish promptly, and the radius of rotation when this structure can guarantee to move the fourth shaft rotation is shorter, avoids moving the fourth shaft and interferes with the lathe mesa, guarantees to move the fourth shaft and can make a round trip to rotate 240 at least, satisfies the processing requirement of lathe.

In the five-axis rotary table described above, the lower side of the housing of the movable fourth shaft is located above the mount. The structure can avoid the interference with the machine tool table surface when the fourth shaft rotates.

In the five-axis rotary workbench, the diameter of the second connecting shaft of the fixed fourth shaft is larger than that of the first connecting shaft of the movable fourth shaft. The structure ensures that the fixed fourth shaft has larger torsion bearing capacity and can stably drive the movable fourth shaft to rotate.

Compared with the prior art, the five-axis rotary workbench has the advantages of simpler structure, more stable operation and long service life.

Drawings

Fig. 1 is a schematic perspective view of the five-axis rotary table.

FIG. 2 is a schematic top view of the five-axis rotary table.

FIG. 3 is a schematic cross-sectional structural view of the five-axis rotary table.

Fig. 4 is an enlarged schematic view of a portion a in fig. 3.

Fig. 5 is an enlarged schematic view of a portion B in fig. 3.

Fig. 6 is a schematic perspective view of a fourth axis.

Fig. 7 is a schematic perspective view of the fourth shaft.

Fig. 8 is a schematic perspective view of a thickening block.

Fig. 9 is a front view of the dynamic brake stand.

In the figure, 1, moving the fourth axis; 11. a first connecting shaft; 111. fixing the convex edge; 12. a dynamic brake sheet; 121. a weakened hole; 122. a gasket; 13. a working turntable; 14. a first shell; 141. a first threaded hole; 142. an annular blocking edge; 15. fixing a brake sheet; 16. a front cover; 161. a pressure tank; 162. a piston; 163. a pressure chamber; 17. a first turbine; 18. a first worm; 2. determining a fourth axis; 21. a second connecting shaft; 22. a dynamic brake frame; 23. a switching disk; 231. a fixed part; 232. a fixing hole; 233. a swing portion; 234. a second counter bore; 24. a second shell; 25. a fixed brake frame; 251. a brake ring; 252. encircling the brake part; 253. a hydraulic oil chamber; 254. a seal ring; 26. a second turbine; 27. a second worm; 3. thickening blocks; 31. a yielding groove; 32. a first counter sink; 33. a second threaded hole; 4. a drive motor; 5. and (7) mounting a seat.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

As shown in fig. 1 to 9, the five-axis rotary worktable comprises a mounting seat 5, and further comprises two independent fixed fourth shafts 2 and a movable fourth shaft 1, wherein the movable fourth shaft 1 comprises a first housing 14 and a first connecting shaft 11 rotatably connected in the first housing 14; decide fourth shaft 2 and include shell two 24 and rotate the second 21 of spiale of connection in shell two 24, decide the diameter of second 21 of spiale of fourth shaft 2 and be greater than the spiale 11 diameter that moves fourth shaft 1, decide fourth shaft 2 and fix on mount pad 5, decide the carousel of fourth shaft 2 and be switching dish 23, switching dish 23 vertical setting, one side that moves fourth shaft 1 is equipped with driving motor 4, move on first 14 of shell of fourth shaft 1 one side relative with driving motor 4 and switching dish 23 fixed connection, the carousel that moves fourth shaft 1 is work carousel 13, work carousel 13 sets up, the axis of work carousel 13 intersects with the axis of switching dish 23 when work carousel 13 is in the horizontality, the downside that moves first 14 of shell of fourth shaft 1 is located the top of mount pad 5.

Adapter plate 23 is including being located the fixed part 231 of upside and being located the wobbling portion 233 of downside, has seted up a plurality of fixed orificess 232 on the fixed part 231, and fixed orificess 232 aligns with the upside position of deciding the second 21 of spiale of fourth shaft 2, and fixed part 231 passes through the bolt fastening with deciding between the second 21 of spiale of fourth shaft 2, and wobbling portion 233 supports with the laminating of the second 21 terminal surfaces of spiale of deciding fourth shaft 2 and leans on, moves a shell 14 fixed mounting of fourth shaft 1 on wobbling portion 233. Through this structure realization adapter plate 23 and the fixed connection who decides the second 21 of spiale of fourth shaft 2, the second 21 of spiale of fixed fourth shaft 2 can the back and forth swing when using, does not do the rotation action, therefore fixed portion 231 can satisfy structural strength with the upside of spiale second 21 is fixed.

A thickening block 3 is fixed between the first shell 14 of the movable fourth shaft 1 and the swinging part 233. Swing portion 233 is the rectangle, and thickening piece 3 is the cuboid form, and thickening piece 3 sets up the recess of stepping down 31 towards swing portion 233 one side middle part. The thickening block 3 is provided with a plurality of first counter bores 32, the first shell 14 of the movable fourth shaft 1 is provided with a plurality of first threaded holes 141, and the thickening block 3 and the first shell 14 of the movable fourth shaft 1 penetrate through the first counter bores 32 through counter bolts and are then screwed with the first threaded holes 141 for fixation; the swinging part 233 is provided with a plurality of second counter bores 234, the thickening block 3 is provided with a plurality of second threaded holes 33, and the swinging part 233 and the thickening block 3 penetrate through the second counter bores 234 through counter bolts and then are in threaded connection with the second threaded holes 33 and then are fixed. The distance between the working turntable 13 and the adapter plate 23 is increased through the thickening block 3, the jointing surface between the thickening block 3 and the swinging part 233 can be reduced through the abdicating groove 31, and the initial position of the working turntable 13 of the movable fourth shaft 1 can be ensured to be in a horizontal state.

Two movable brake sheets 12 are fixedly connected to the spindle I11, a fixed brake sheet 15 is fixed in the housing I14, the fixed brake sheet 15 is located between the outer edges of the two movable brake sheets 12, gaps are formed between two sides of the fixed brake sheet 15 and the movable brake sheets 12, a front cover 16 is fixed at the front end of the housing I14, an annular pressure groove 161 is formed in the inner side of the front cover 16, a piston 162 is arranged in the pressure groove 161, a pressure chamber 163 is formed between the inner side of the piston 162 and the pressure groove 161, the outer side of the piston 162 is opposite to the outer edge of the movable brake sheet 12, and after the pressure chamber 163 is pressurized, the piston 162 can move towards the movable brake sheet 12 to enable the movable brake sheet 12 to be in pressing contact with the fixed brake sheet 15; a movable brake frame 22 is fixed on the second spindle 21, a fixed brake frame 25 is fixed on the second housing 24, a brake ring 251 surrounding the movable brake frame 22 is arranged on the fixed brake frame 25, a hydraulic oil cavity 253 is arranged between the outer side of the brake ring 251 and the second housing 24, and the brake ring 251 can tightly hold the movable brake frame 22 after the hydraulic oil cavity 253 is pressurized.

An annular blocking edge 142 is arranged in the first shell 14, the fixed brake sheet 15 is fixed on the outer side of the annular blocking edge 142, the two movable brake sheets 12 are located on the outer side of the annular blocking edge 142, a gap is formed between the movable brake sheet 12 close to the annular blocking edge 142 and the outer side surface of the annular blocking edge 142, and the movable brake sheet 12 close to the annular blocking edge 142 is in pressing contact with the annular blocking edge 142 when the piston 162 moves and presses the movable brake sheet 12. When braking, the friction between the annular blocking edge 142 and the adjacent dynamic brake sheet 12 can also provide brake resistance, so that a friction surface is also improved, the brake resistance is improved, the axial torsion strength of the first connecting shaft 11 is higher, and the fourth shaft for fixing the workpiece can swing to a certain angle to realize stable positioning on the workpiece with higher mass.

The middle part of the dynamic brake sheet 12 is provided with a plurality of weakening holes 121, the weakening holes 121 are arc-shaped, two groups of weakening holes 121 which are arranged at intervals are arranged in the radial direction, and the two groups of weakening holes 121 are arranged in a staggered mode in the circumferential direction. The central angle of the weakened holes 121 is greater than 90 ° and less than 120, preferably the central angle of the weakened holes 121 is greater than 90 ° or 105 or 120; make deformation portion elasticity stronger through setting up weakening hole 121, change when piston 162 promotes the brake portion and buckle, the brake portion also resets sooner after piston 162 resets.

The first connecting shaft 11 is provided with a fixed convex edge 111, the movable brake sheet 12 is sleeved on the first connecting shaft 11 and located on the outer side of the fixed convex edge 111, a gasket 122 is clamped between the inner sides of the two movable brake sheets 12, the movable brake sheets 12 are fixed on the outer side of the fixed convex edge 111 through a plurality of bolts, and the thickness of the gasket 122 is larger than that of the fixed brake sheet 15.

An annular groove is formed in the middle of the outer side face of the brake ring 251 to form the hydraulic oil cavity 253, the brake part 252 is encircled at the position, corresponding to the hydraulic oil cavity 253, of the brake ring 251, a hydraulic oil path is formed in the second shell 24 and is communicated with the hydraulic oil cavity 253 in an aligned mode, sealing rings 254 are arranged on two sides, located on the hydraulic oil cavity 253, of the second shell 24, and the sealing rings 254 are sealed with the outer side face of the brake ring 251. The thickness of embracing brake portion 252 is less than the thickness of brake ring 251, changes deformation more, embraces brake portion 252 to inboard deformation after hydraulic pressure oil pocket 253 pressure boost and will decide the brake frame 25 and embrace the brake tightly.

A first worm wheel 17 is fixed at the middle section of the first connecting shaft 11, a first worm 18 meshed with the first worm wheel 17 is rotatably connected in the first shell 14, and the first worm 18 is driven by a driving motor 4 fixed on the outer side of the first shell 14; a second worm wheel 26 is fixed at the middle section of the second connecting shaft 21, a second worm 27 meshed with the second worm wheel 26 is rotatably connected in the second housing 24, and the second worm 27 is driven by a driving motor 4 fixed on the outer side of the second housing 24. The worm gear and worm transmission has a self-locking function, and the positioning stability of the spindle can be improved on the basis of braking.

The mount pad 5 is installed on the mesa of lathe, decides that the switching dish 23 of fourth shaft 2 rotates and can drive and rotate fourth shaft 1 in vertical direction, realizes moving the swing of the work carousel 13 of fourth shaft 1, and the work carousel 13 that moves fourth shaft 1 simultaneously can independently come the water and rotate, realizes the rotation and the swing of work piece. Decide fourth shaft 2 and move fourth shaft 1 and adopt independent braking system for the work carousel 13 position that moves fourth shaft 1 keeps more firm, improves the machining precision.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.

Claims

1. The utility model provides a five-axis rotary worktable, includes mount pad (5), its characterized in that, five-axis rotary worktable still include two independent decide fourth shaft (2) and move fourth shaft (1), decide fourth shaft (2) and fix on mount pad (5), the carousel of deciding fourth shaft (2) is switching dish (23), switching dish (23) vertical setting, the shell of moving fourth shaft (1) is fixed on switching dish (23), the carousel of moving fourth shaft (1) is work carousel (13), work carousel (13) set up work carousel (13) when being in the horizontality the axis of work carousel (13) is crossing with the axis of switching dish (23).

2. The five-axis rotary workbench according to claim 1, wherein the adapter plate (23) comprises a fixed part (231) located on the upper side and a swinging part (233) located on the lower side, the fixed part (231) is provided with a plurality of fixed holes (232), the fixed holes (232) are aligned with the upper side of the second spindle (21) of the fixed fourth spindle (2), the fixed part (231) and the second spindle (21) of the fixed fourth spindle (2) are fixed through bolts, the swinging part (233) abuts against the end face of the second spindle (21) of the fixed fourth spindle (2) in a fit manner, and a shell of the movable fourth spindle (1) is fixedly installed on the swinging part (233).

3. Five-axis rotary table according to claim 2, characterized in that a thickening block (3) is fixed between the housing of the movable fourth shaft (1) and the swing part (233).

4. The five-axis rotary workbench according to claim 3, wherein the swing part (233) is rectangular, the thickening block (3) is rectangular, and a yielding groove (31) is formed in the middle of one side of the thickening block (3) facing the swing part (233).

5. The five-axis rotary workbench according to claim 3, characterized in that the thickening block (3) is provided with a plurality of first countersunk holes (32), the shell of the movable fourth shaft (1) is provided with a plurality of first threaded holes (141), and the thickening block (3) and the shell of the movable fourth shaft (1) are fixed after penetrating through the first countersunk holes (32) through countersunk bolts and being screwed with the first threaded holes (141); the swing portion (233) is provided with a plurality of second countersunk holes (234), the thickening block (3) is provided with a plurality of second threaded holes (33), and the swing portion (233) and the thickening block (3) are fixed after penetrating through the second countersunk holes (234) through countersunk bolts and then being screwed with the second threaded holes (33).

6. Five-axis rotary table according to any one of claims 1 to 5, characterized in that a driving motor (4) is arranged on one side of the movable fourth shaft (1), and the side of the housing of the movable fourth shaft (1) opposite to the driving motor (4) is fixedly connected with the adapter plate (23).

7. Five-axis rotary table according to any one of claims 1 to 5, characterized in that the underside of the housing of the movable fourth shaft (1) is located above the mounting seat (5).

8. Five-axis rotary table according to any one of claims 1 to 5, characterised in that the diameter of the second spindle (21) of the fixed fourth spindle (2) is greater than the diameter of the first spindle (11) of the movable fourth spindle (1).