CN110091186B - Mosaic direct-drive rotary workbench using hydrostatic guideway - Google Patents
Mosaic direct-drive rotary workbench using hydrostatic guideway Download PDFInfo
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- CN110091186B CN110091186B CN201910288160.3A CN201910288160A CN110091186B CN 110091186 B CN110091186 B CN 110091186B CN 201910288160 A CN201910288160 A CN 201910288160A CN 110091186 B CN110091186 B CN 110091186B
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- 230000002706 hydrostatic effect Effects 0.000 title claims abstract description 40
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 52
- 239000010959 steel Substances 0.000 claims abstract description 52
- 210000000078 claw Anatomy 0.000 claims abstract description 23
- 230000009286 beneficial effect Effects 0.000 abstract description 9
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 4
- 230000000712 assembly Effects 0.000 description 3
- 238000000429 assembly Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/01—Frames, beds, pillars or like members; Arrangement of ways
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/01—Frames, beds, pillars or like members; Arrangement of ways
- B23Q1/017—Arrangements of ways
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/25—Movable or adjustable work or tool supports
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- Mechanical Engineering (AREA)
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Abstract
The invention provides an embedded direct-drive rotary workbench using a hydrostatic guideway, which comprises a basic workbench, a rotary workbench, the hydrostatic guideway, a tensioning bolt seat, a connecting plate, an upper bearing, a motor mandrel, a torque motor rotor, a torque motor stator, a motor cover, a lower bearing, a round grating ruler component, a round grating, a reading head, an upper steel ball retainer and steel balls, a signal processing circuit board, a ball spline, a flat key, a first screw, a locking mechanism component, an inner tensioning claw, an outer tensioning claw, a butterfly spring, a pull rod, a piston, a cylinder cover, an oil cylinder, an oil cavity, a lower steel ball retainer and steel balls. The lower plane of the rotary worktable is supported on the hydrostatic guideway on the basic worktable, which is beneficial to the weight of the rotary worktable component and the workpiece on the worktable to be transmitted to the hydrostatic guideway through the lower plane of the rotary worktable.
Description
Technical Field
The invention belongs to the technical field of common functional components of numerical control machine tools, and particularly relates to an embedded direct-drive rotary workbench using a hydrostatic guideway.
Background
The rotary worktable is a commonly used functional part on a numerical control machine tool, the shape of the rotary worktable is generally round or square, the area of the worktable is smaller, a large-sized long-strip-shaped workpiece cannot be processed, and the rotary worktable assembly is smaller in volume, and the rotary worktable can only be supported on a turntable base with a smaller bearing area, so that the bearing weight of the rotary worktable is smaller.
On the planer milling machine, a rectangular workbench is used, and although a larger workpiece can be machined and the weight of the larger workpiece can be borne, the multi-elevation machining cannot be realized in one clamping, the multi-elevation machining can be finished only by multiple clamping and alignment, and the production efficiency is lower.
However, the existing workbench has the problems of poor supporting capability, poor accuracy, incapability of realizing various working modes, small workbench surface and low production efficiency.
Therefore, it is necessary to invent a mosaic direct drive rotary table using hydrostatic rails.
Disclosure of Invention
In order to solve the technical problems, the invention provides an embedded direct-drive rotary workbench using a hydrostatic guideway, which solves the problems that the existing workbench has poor supporting capability and poor accuracy, cannot realize various working modes, has small workbench surface and has low production efficiency. The embedded direct-drive rotary workbench comprises a basic workbench, a rotary workbench, a hydrostatic guideway, a tensioning bolt seat, a connecting plate, an upper bearing, a motor mandrel, a torque motor rotor, a torque motor stator, a motor cover, a lower bearing, a round grating ruler component, a round grating, a reading head, an upper steel ball retainer and a steel ball, a signal processing circuit board, a ball spline, a flat key, a first screw, a locking mechanism component, an inner tensioning claw, an outer tensioning claw, a belleville spring, a pull rod, a piston, a oil cylinder cover, an oil cylinder, an oil cavity, a lower steel ball retainer and a steel ball, a turntable base, a first locking nut, a grating reading head fixing frame, a second locking nut, an adjusting nut, a first gap, a second gap, a third gap, a fourth gap, a fifth gap, a sixth gap, a second screw and an oil inlet, wherein the rotary workbench component is embedded in a middle concave hole of the basic workbench; the lower plane of the rotary workbench is supported on a hydrostatic guideway on the basic workbench; the workbench is connected with the hydrostatic guideway through bolts.
Preferably, the upper plane of the rotary table is coplanar with the upper plane of the base table.
Preferably, the rotary worktable assembly in the rotary worktable is formed by connecting a rotary worktable, a connecting plate, a motor mandrel and a torque motor rotor together; the rotary table assembly comprising the rotary table is supported at the upper part of the turntable base through an upper bearing; the turntable base, the torque motor stator, the motor cover and the lower bearing are combined together and fixed on the upper part of the basic workbench; the torque motor rotor is supported between the upper bearing and the lower bearing.
Preferably, the round grating ruler component is fixed on the outer circle of a spline sleeve of the ball spline through a round grating, an upper steel ball retainer, a steel ball, a lower steel ball retainer, a steel ball, a grating reading head fixing frame, a first lock nut; the inner hole of the ball spline is fixed on the lower shaft diameter of the motor mandrel through a flat key and a second lock nut; the flange plate of the grating reading head fixing frame is fixed on the motor cover through a first screw; the reading head and the signal processing circuit board are respectively fixed on the upper plane and the lower plane of the inner cavity of the grating reading head fixing frame by screws.
Preferably, the locking mechanism assembly is composed of an inner tensioning claw, an outer tensioning claw and a tensioning bolt seat fastened on the bottom surface of the rotary workbench; the upper part of the pull rod is fixed in a screw hole of the outer tensioning claw through threads; the lower part of the pull rod passes through the inside of the round hole at the upper part of the oil cylinder; the belleville spring and the adjusting nut are sleeved and arranged at the lower part of the pull rod; the piston and the oil cylinder cover are arranged in a round hole of the oil cylinder; an oil cavity is formed between the piston and the oil cylinder cover.
Preferably, the upper bearing, the lower bearing and the upper end face and the lower end face of the spline housing of the ball spline are respectively provided with a first gap, a second gap, a third gap, a fourth gap, a fifth gap and a sixth gap.
Preferably, the motor cover is fixed on the upper part of the turntable base through bolts; the turntable base bolt is fixed on the upper part of the basic workbench.
Preferably, the adjusting nut is in threaded connection with the pull rod.
Preferably, the upper steel ball retainer and the steel ball are arranged between the circular grating and the upper plane of the inner cavity of the grating reading head fixing frame, and the lower steel ball retainer and the steel ball are arranged between the lower plane of the inner cavity of the grating reading head fixing frame and the upper plane of the first locking nut.
Compared with the prior art, the invention has the beneficial effects that:
In the invention, the rotary worktable components including the rotary worktable are embedded in the middle concave hole of the basic worktable; the upper plane of the rotary worktable is coplanar with the upper plane of the basic worktable, and when the rotary worktable is used for processing, the rotary worktable can perform rotary positioning action at any angle around the center line of the rotary worktable; when the basic workbench is used for processing large-scale workpieces, the T-shaped groove on the rotary workbench is adjusted to be consistent with the direction of the T-shaped groove on the basic workbench.
In the invention, the lower plane of the rotary worktable is supported on the hydrostatic guideway on the basic worktable, which is beneficial to the weight of the rotary worktable assembly and the workpiece on the worktable to be transmitted to the hydrostatic guideway through the lower plane of the rotary worktable.
In the invention, the upper end face and the lower end face of the spline housing of the upper bearing, the lower bearing and the ball spline are respectively provided with a first gap, a second gap, a third gap, a fourth gap, a fifth gap and a sixth gap, which are beneficial to the fact that when the hydrostatic guideway is introduced with pressure oil, the motor mandrel can axially move upwards for a certain distance when the rotary worktable floats together with the motor mandrel, the pressure oil is unloaded after the rotary worktable rotates to a specified position according to the requirement, the rotary worktable descends, and the motor mandrel axially moves downwards for a certain distance to reset.
In the invention, a flange plate of the grating reading head fixing frame is fixed on a motor cover through a first screw, and a motor cover bolt is fixed on the upper part of a turntable base; the turntable base bolt is fixed on the upper part of the basic workbench, so that the grating reading head fixing frame can not rotate or axially move; the reading head and the signal processing circuit board are fixed on the upper and lower planes of the inner cavity of the grating reading head fixing frame, so that the reading head and the signal processing circuit board cannot rotate or axially move; the circular grating is fixed on an outer circular flange of a spline housing of the ball spline by a second screw, and the spline housing of the ball spline can move along the axial direction when rotating, but keeps zero clearance in the circumferential direction.
In the invention, the upper steel ball retainer and the steel ball are arranged between the circular grating and the upper plane of the inner cavity of the grating reading head fixing frame, and the lower steel ball retainer and the steel ball are arranged between the lower plane of the inner cavity of the grating reading head fixing frame and the upper plane of the first locking nut, so that when the workbench rotates in an indexing way, the circular grating rotates along with the motor mandrel, but when the motor mandrel moves axially, the circular grating ruler component keeps the original axial position still, thereby ensuring the accuracy of grating reading.
The invention discloses a locking mechanism, which is characterized in that the tension force of a locking mechanism assembly is realized by a group of belleville springs, the tension force is regulated by regulating nuts, when a rotary table works, an oil cavity enters pressure oil to push a piston to ascend, the belleville springs are compressed, the tension force on a pull rod is removed, the clamping force of an inner tension claw and an outer tension claw on a tension bolt seat on the bottom surface of the rotary table is released, a hydrostatic guideway is introduced with pressure oil through an oil inlet to float the rotary table, a torque motor drives a motor mandrel to rotate together with the rotary table, after the indexing reaches a specified angle, the pressure oil of the hydrostatic guideway is unloaded, the rotary table, the motor mandrel and other rotary table assemblies descend, the lower plane of the rotary table is combined with the hydrostatic guideway, the pressure oil in the oil cavity descends, the pressure of the belleville springs is released, and the rotary table is locked again.
In the invention, the lower plane of the rotary worktable is supported on the hydrostatic guideway on the basic worktable, which is beneficial to improving the supporting capacity and dispersing the bearing capacity.
In the invention, the rotary worktable components including the rotary worktable are embedded in the middle concave hole of the basic worktable, which is beneficial to realizing various working modes.
In the invention, the upper plane of the rotary workbench is coplanar with the upper plane of the basic workbench, which is beneficial to increasing the area of the workbench surface and can be adjusted.
In the invention, the upper steel ball retainer and the steel ball are arranged between the circular grating and the upper plane of the inner cavity of the grating reading head fixing frame, and the lower steel ball retainer and the steel ball are arranged between the lower plane of the inner cavity of the grating reading head fixing frame and the upper plane of the first locking nut, thereby being beneficial to improving the production efficiency.
Drawings
Fig. 1 is a schematic diagram of the front structure of the present invention.
Fig. 2 is a right-side view of the present invention.
Fig. 3 is a schematic top view of the present invention.
FIG. 4 is a schematic view of the A-A cross-sectional structure of the present invention.
Fig. 5 is a schematic view of the fig. 4 partial enlarged structure of the present invention.
FIG. 6 is a schematic view of the B-B cross-sectional structure of the present invention.
Fig. 7 is a schematic view of the partially enlarged structure of fig. 6 according to the present invention.
In the figure:
1. A base work table; 2. a rotary table; 3. a hydrostatic guideway; 4. tightening the bolt seat; 5. a connecting plate; 6. an upper bearing; 7. a motor spindle; 8. a torque motor rotor; 9. a torque motor stator; 10. a motor cover; 11. a lower bearing; 12. a circular grating ruler assembly; 13. a circular grating; 14. a reading head; 15. a steel ball retainer and a steel ball are arranged; 16. a signal processing circuit board; 17. a ball spline; 18. a flat key; 19. a first screw; 20. a locking mechanism assembly; 21. an inner tightening jaw; 22. an outer tightening jaw; 23. a belleville spring; 24. a pull rod; 25. a piston; 26. a cylinder head; 27. an oil cylinder; 28. an oil chamber; 29. a steel ball retainer and a steel ball are arranged; 30. a turntable base; 31. a first lock nut; 32. a grating reading head fixing frame; 33. a second lock nut; 34. an adjusting nut; 35. a first gap; 36. a second gap; 37. a third gap; 38. a gap IV; 39. fifth gap; 40. a gap is six; 41. a second screw; 42. and an oil inlet.
Detailed Description
The invention is specifically described below with reference to the accompanying drawings, as shown in fig. 1 to 7, an embedded direct-drive rotary table using hydrostatic guides comprises a basic table 1, a rotary table 2, hydrostatic guides 3, a tensioning bolt seat 4, a connecting plate 5, an upper bearing 6, a motor spindle 7, a torque motor rotor 8, a torque motor stator 9, a motor cover 10, a lower bearing 11, a round grating ruler assembly 12, a round grating 13, a reading head 14, an upper steel ball retainer and steel balls 15, a signal processing circuit board 16, a ball spline 17, a flat key 18, a first screw 19, a locking mechanism assembly 20, an inner tensioning claw 21, an outer tensioning claw 22, a butterfly spring 23, a pull rod 24, a piston 25, a cylinder cover 26, an oil cylinder 27, an oil cavity 28, a lower steel ball retainer and steel balls 29, a rotary table base 30, a first locking nut 31, a grating reading head fixing frame 32, a second locking nut 33, an adjusting nut 34, a first gap 35, a second gap 36, a third gap 37, a fourth gap 38, a fifth gap 39, a sixth gap 40, second screws 41 and 42, and an intermediate concave hole of the rotary table 2 is embedded in the basic table 1; the lower plane of the rotary worktable 2 is supported on a hydrostatic guideway 3 on the basic worktable 1; the worktable 1 and the hydrostatic guideway 3 are connected by bolts, which is beneficial to the weight of the rotary worktable components and the workpieces on the worktable to be transmitted to the hydrostatic guideway 3 through the lower plane of the rotary worktable 2.
In this embodiment, specifically, the upper plane of the rotary table 2 is coplanar with the upper plane of the base table 1, and when the rotary table 2 is used for processing, the rotary table 2 can perform any angle rotation positioning action around the center line thereof; when the basic table 1 is used for processing large workpieces, the T-shaped groove on the rotary table 2 is adjusted to be consistent with the direction of the T-shaped groove on the basic table 1.
In this embodiment, specifically, the rotary table assembly including the rotary table 2 is formed by connecting the rotary table 2, the connecting plate 5, the motor spindle 7 and the torque motor rotor 8 together; the rotary table assembly including the rotary table 2 is supported at the upper part of the turntable base 30 through an upper bearing 6; the turntable base 30 is combined with the torque motor stator 9, the motor cover 10 and the lower bearing 11 and is fixed on the upper part of the basic workbench 1; the torque motor rotor 8 is supported between the upper bearing 6 and the lower bearing 11.
In this embodiment, specifically, the circular grating ruler assembly 12 is fixed on the outer circle of the spline housing of the ball spline 17 through a circular grating 13, an upper steel ball retainer and steel ball 15, a lower steel ball retainer and steel ball 29, a grating reading head fixing frame 32, a first lock nut 31; the inner hole of the ball spline 17 is fixed on the lower shaft diameter of the motor mandrel 7 through a flat key 18 and a second lock nut 33; the reading head 14 and the signal processing circuit board 16 are respectively fixed on the upper and lower planes of the inner cavity of the grating reading head fixing frame 32 by screws.
In this embodiment, specifically, the locking mechanism assembly 20 is composed of an inner tightening claw 21, an outer tightening claw 22, and a tightening bolt seat 4 fastened on the bottom surface of the rotary table 2; the upper part of the pull rod 24 is fixed in a screw hole of the outer tensioning claw 22 through threads; the lower part of the pull rod 24 passes through the inside of a round hole at the upper part of the oil cylinder 27; the belleville spring 23 and the adjusting nut 34 are sleeved and mounted at the lower part of the pull rod 24; the piston 25 and the oil cylinder cover 26 are arranged in a round hole of the oil cylinder 27; an oil chamber 28 is formed between the piston 25 and the cylinder head 26.
In this embodiment, specifically, the upper end surface and the lower end surface of the spline housing of the upper bearing 6, the lower bearing 11 and the ball spline 17 are respectively provided with a first gap 35, a second gap 36, a third gap 37, a fourth gap 38, a fifth gap 39 and a sixth gap 40, which is favorable for moving the motor spindle 7 axially upwards by a certain distance when the hydrostatic guideway 3 is filled with pressure oil and floats the rotary table 2 together with the motor spindle 7, and after the rotary table 2 rotates to a specified position as required, the pressure oil is unloaded, the rotary table 2 descends, and the motor spindle 7 moves downwards by a certain distance again for resetting.
In this embodiment, specifically, the flange of the grating reading head fixing frame 32 is fixed on the motor cover 10 through the first screw 19; the motor cover 10 is fixed on the upper part of the turntable base 30 through bolts; the turntable base 30 is fixed on the upper part of the basic workbench 1 by bolts, so that the grating reading head fixing frame 32 can not rotate or axially move; the reading head 14 and the signal processing circuit board 16 are fixed on the upper and lower planes of the inner cavity of the grating reading head fixing frame 32, so that the reading head 14 and the signal processing circuit board 16 cannot rotate and cannot axially move; the circular grating 13 is fixed on the outer circular flange of the spline housing of the ball spline 17 by a second screw 41, and the spline housing of the ball spline 17 can move axially when rotating, but maintains zero clearance in the circumferential direction.
In this embodiment, the adjusting nut 34 is specifically in threaded connection with the pull rod 24.
In this embodiment, specifically, the upper steel ball holder and steel ball 15 are installed between the circular grating 13 and the upper plane of the inner cavity of the grating reading head holder 32, and the lower steel ball holder and steel ball 29 are installed between the lower plane of the inner cavity of the grating reading head holder 32 and the upper plane of the first lock nut 31, so that when the workbench rotates in an indexing manner, the circular grating 13 rotates along with the motor spindle 7, but when the motor spindle 7 moves axially, the circular grating ruler assembly 12 keeps the original axial position still, so as to ensure the accuracy of grating reading.
In this embodiment, specifically, the tightening force of the locking mechanism assembly 20 is achieved by a group of belleville springs 23, the magnitude of the tightening force is adjusted by an adjusting nut 34, when the rotary table 2 works, an oil cavity 28 enters pressure oil, a piston 25 is pushed to move upwards, the belleville springs 23 are compressed, the stretching force on a pull rod 24 is removed, the clamping force of an inner tension claw 21 and an outer tension claw 22 on a tightening bolt seat 4 on the bottom surface of the rotary table 2 is released, the hydrostatic guideway 3 is introduced with the pressure oil through an oil inlet 42, the rotary table 2 floats, a torque motor drives a motor mandrel 7 to rotate together with the rotary table 2, after the indexing reaches a specified angle, the pressure oil of the hydrostatic guideway 3 is unloaded, the rotary table 2, the motor mandrel 7 and other rotary table assemblies descend, the lower plane of the rotary table 2 is combined with the hydrostatic guideway 3, the pressure oil in the oil cavity 28 is unloaded, the piston 25 descends, the pressure of the belleville springs 23 is released, and the rotary table 2 is locked again.
In the invention, when the rotary worktable 2 is used for processing, the rotary worktable 2 can perform rotary positioning action at any angle around the center line of the rotary worktable 2; when the basic workbench 1 is used for processing large workpieces, the T-shaped groove on the rotary workbench 2 is adjusted to be consistent with the direction of the T-shaped groove on the basic workbench 1; when the hydrostatic guideway 3 is filled with pressure oil, and the rotary table 2 and the motor mandrel 7 are floated together, the motor mandrel 7 can move upwards for a certain distance axially, after the rotary table 2 rotates to a specified position according to the requirement, the pressure oil is unloaded, the rotary table 2 descends, and the motor mandrel 7 moves downwards for a certain distance again to reset; at the same time, the grating reading head holder 32 cannot rotate nor move axially; the reading head 14 and the signal processing circuit board 16 are fixed on the upper and lower planes of the inner cavity of the grating reading head fixing frame 32, so that the reading head 14 and the signal processing circuit board 16 cannot rotate and cannot axially move; the circular grating 13 is fixed on an outer circular flange of a spline housing of the ball spline 17 by a second screw 41, and the spline housing of the ball spline 17 can move axially when rotating, but keeps zero clearance in the circumferential direction; when the workbench rotates in an indexing way, the round grating 13 rotates along with the motor mandrel 7, but the original axial position of the round grating ruler assembly 12 is kept unchanged when the motor mandrel 7 moves axially, so that the accuracy of grating reading is ensured; the tightening force of the locking mechanism assembly 20 is realized by a group of belleville springs 23, the tightening force is regulated by regulating nuts 34, when the rotary table 2 works, an oil cavity 28 enters pressure oil, a piston 25 is pushed to ascend, the belleville springs 23 are compressed, the tension force on a pull rod 24 is removed, the clamping force of an inner tension claw 21 and an outer tension claw 22 on a tightening bolt seat 4 on the bottom surface of the rotary table 2 is released, the hydrostatic guideway 3 is filled with the pressure oil through an oil inlet 42, the rotary table 2 floats, a torque motor drives a motor mandrel 7 to rotate together with the rotary table 2, after the indexing reaches a specified angle, the pressure oil of the hydrostatic guideway 3 is unloaded, the rotary table 2, the motor mandrel 7 and other rotary table assemblies descend, the lower plane of the rotary table 2 is combined with the hydrostatic guideway 3, the pressure oil in the oil cavity 28 is unloaded, the piston 25 descends, and the pressure of the belleville springs 23 is released, and the rotary table 2 is locked again.
By using the technical scheme of the invention or under the inspired by the technical scheme of the invention, a similar technical scheme is designed by a person skilled in the art, so that the technical effects are achieved, and the technical effects fall into the protection scope of the invention.
Claims (4)
1. The embedded direct-drive rotary workbench using the hydrostatic guideway is characterized by comprising a basic workbench (1), a rotary workbench (2), the hydrostatic guideway (3), a tensioning bolt seat (4), a connecting plate (5), an upper bearing (6), a motor mandrel (7), a torque motor rotor (8), a torque motor stator (9), a motor cover (10), a lower bearing (11), a circular grating ruler assembly (12), a circular grating (13), a reading head (14), an upper steel ball retainer and steel balls (15), a signal processing circuit board (16) and a ball spline (17), Flat key (18), first screw (19), locking mechanism subassembly (20), interior tight claw (21), outer tight claw (22), belleville spring (23), pull rod (24), piston (25), cylinder cap (26), hydro-cylinder (27), oil pocket (28), lower steel ball holder and steel ball (29), revolving stage base (30), first lock nut (31), grating reading head mount (32), second lock nut (33), adjusting nut (34), clearance one (35), clearance two (36), clearance three (37), clearance four (38), clearance five (39), clearance six (40), the rotary table assembly comprising the rotary table (2) is embedded in a middle concave hole of the basic table (1); The lower plane of the rotary worktable (2) is supported on a hydrostatic guideway (3) on the basic worktable (1); the workbench (1) and the hydrostatic guideway (3) are connected by bolts; the rotary table assembly comprising the rotary table (2) is formed by connecting the rotary table (2), a connecting plate (5), a motor mandrel (7) and a torque motor rotor (8); the rotary table assembly comprising the rotary table (2) is supported at the upper part of the turntable base (30) through an upper bearing (6); the turntable base (30) is combined with the torque motor stator (9), the motor cover (10) and the lower bearing (11) and is fixed on the upper part of the basic workbench (1); the torque motor rotor (8) is supported between the upper bearing (6) and the lower bearing (11); the circular grating ruler assembly (12) is characterized in that the circular grating ruler assembly is fixed on the outer circle of a spline sleeve of a ball spline (17) through a circular grating (13), an upper steel ball retainer, a steel ball (15), a lower steel ball retainer, a steel ball (29), a grating reading head fixing frame (32), a first locking nut (31); the inner hole of the ball spline (17) is fixed on the lower shaft diameter of the motor mandrel (7) through a flat key (18) and a second locking nut (33); the flange plate of the grating reading head fixing frame (32) is fixed on the motor cover (10) through a first screw (19); The reading head (14) and the signal processing circuit board (16) are respectively fixed on the upper and lower planes of the inner cavity of the grating reading head fixing frame (32) by screws; the locking mechanism assembly (20) is composed of an inner tensioning claw (21), an outer tensioning claw (22) and a tensioning bolt seat (4) fastened on the bottom surface of the rotary worktable (2); the upper part of the pull rod (24) is fixed in a screw hole of the outer tensioning claw (22) through threads; the lower part of the pull rod (24) passes through the inside of a round hole at the upper part of the oil cylinder (27); the belleville spring (23) and the adjusting nut (34) are sleeved and arranged at the lower part of the pull rod (24); The piston (25) and the oil cylinder cover (26) are arranged in a round hole of the oil cylinder (27); an oil cavity (28) is formed between the piston (25) and the oil cylinder cover (26); the upper end face and the lower end face of the spline housing of the upper bearing (6), the lower bearing (11) and the ball spline (17) are respectively provided with a first gap (35), a second gap (36), a third gap (37), a fourth gap (38), a fifth gap (39) and a sixth gap (40); the upper steel ball retainer and the steel ball (15) are arranged between the circular grating (13) and the upper plane of the inner cavity of the grating reading head fixing frame (32), and the lower steel ball retainer and the steel ball (29) are arranged between the lower plane of the inner cavity of the grating reading head fixing frame (32) and the upper plane of the first locking nut (31).
2. A mosaic direct drive rotary table using hydrostatic guideway according to claim 1, wherein the upper plane of the rotary table (2) is coplanar with the upper plane of the base table (1).
3. The embedded direct-drive rotary table using hydrostatic guideway according to claim 1, characterized in that the motor cover (10) is bolted to the upper part of the turntable base (30); the turntable base (30) is fixed on the upper part of the basic workbench (1) through bolts.
4. A mosaic direct drive rotary table using hydrostatic guideway according to claim 1, wherein the adjustment nut (34) is threadedly coupled to the tie rod (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910288160.3A CN110091186B (en) | 2019-04-11 | 2019-04-11 | Mosaic direct-drive rotary workbench using hydrostatic guideway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910288160.3A CN110091186B (en) | 2019-04-11 | 2019-04-11 | Mosaic direct-drive rotary workbench using hydrostatic guideway |
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| Publication Number | Publication Date |
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| CN110091186A CN110091186A (en) | 2019-08-06 |
| CN110091186B true CN110091186B (en) | 2024-07-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910288160.3A Active CN110091186B (en) | 2019-04-11 | 2019-04-11 | Mosaic direct-drive rotary workbench using hydrostatic guideway |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111168415A (en) * | 2020-01-19 | 2020-05-19 | 浙江中孚精密机床股份有限公司 | A large direct drive CNC turntable |
| CN112025335A (en) * | 2020-08-10 | 2020-12-04 | 北京海普瑞森超精密技术有限公司 | Ultra-precise hydraulic servo turntable |
| CN114770147B (en) * | 2022-05-26 | 2024-10-29 | 通用技术集团沈阳机床有限责任公司 | Rotary workbench based on zero point positioning and application thereof |
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| CN103624555B (en) * | 2013-11-29 | 2016-06-15 | 南京工业大学 | Static pressure heavy-load direct-drive high-precision rotary worktable |
| CN104476216B (en) * | 2014-12-29 | 2016-08-24 | 威海华东重工有限公司 | Heavy type numerical control floor type boring and milling machine heavy-loaded precision rotary table |
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| CN203317051U (en) * | 2013-07-18 | 2013-12-04 | 北京微纳精密机械有限公司 | Ultraprecise aerostatic rotating table |
| CN210451798U (en) * | 2019-04-11 | 2020-05-05 | 山东普鲁特机床有限公司 | Embedded direct-drive rotary worktable using hydrostatic guide rail |
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