Double-throttling hydrostatic pressure rotary table

Abstract

The utility model discloses a double-throttling hydrostatic pressure rotary table, which belongs to the technical field of hydrostatic pressure rotary tables and comprises a device body, a working table is mounted at the upper end of the device body and is of a hollow structure, a clamping and fixing mechanism is arranged on the working table and comprises a stepping motor fixed in the working table, and the stepping motor is fixed in the working table. The main shaft end of the stepping motor is fixedly connected with a worm, the inner wall of the workbench is rotationally connected with a worm gear in meshed connection with the worm through a first rotating shaft, the first rotating shaft is fixedly connected with a first gear, and the inner wall of the workbench is rotationally connected with a gear ring in meshed connection with the first gear. The inner wall of the workbench is rotationally connected with four second gears arranged at equal intervals in a surrounding mode through four second rotating shafts. According to the utility model, the workpiece can be clamped and fixed by arranging the clamping and fixing mechanism, so that the stability is kept during subsequent processing, and the processing quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrostatic turntables, in particular to a double-throttle hydrostatic turntable. Background Technique

[0002] The hydrostatic turntable supplies liquid with a certain static pressure to the clearance of the rotating pair through a hydraulic supply device. The formed liquid film completely separates the relatively rotating parts, and realizes low-friction support without direct solid contact through the liquid static pressure. The hydrostatic turntable has the advantages of small frictional resistance, high motion accuracy, good load-bearing characteristics, high reliability and long service life, and is widely used in mechanical manufacturing, precision measurement, aviation, aerospace, astronomy and electric power.

[0003] In a Chinese patent for a double-throttle hydrostatic turntable (patent number: CN214171135U), the device includes a thrust plate, a stepped shaft, a bushing and a base. The bushing is arranged on the small-diameter shaft of the stepped shaft, the thrust plate is arranged at the top of the stepped shaft, the base is arranged at the bottom of the stepped shaft, and a throttle is also included; multiple groups of oil supply channels are arranged in the base and the bushing. Each group of oil supply channels includes a base oil supply channel and a bushing oil supply channel that are communicated with each other. Multiple oil cavities are arranged on the side of the bushing, and multiple oil cavities are all located between the bushing and the stepped shaft and between the bushing and the thrust plate. Each group of oil supply channels is communicated with an oil cavity, and each oil cavity is used to supply oil between the bushing and the stepped shaft and between the bushing and the thrust plate to form a supporting oil film; a throttle is arranged on each base oil supply channel, and a throttle is arranged on each bushing oil supply channel. The device can realize the adaptive adjustment of the supporting oil film pressure with the change of the external load through the double-throttle action of two throttles installed on the oil paths of each oil cavity. However, the workbench on this double-throttle hydrostatic turntable does not have the function of clamping and fixing the workpiece, and it is difficult to ensure the stability of the workpiece during the processing process, thus affecting the processing quality. Summary of the Invention

[0004] The purpose of the utility model is to provide a double-throttle hydrostatic turntable to solve the problems put forward in the above background technique.

[0005] To achieve the above object, the present utility model provides the following technical solution: A double-throttle hydrostatic turntable, including a device body, a workbench is installed at the upper end of the device body, the workbench is of a hollow structure, a clamping and fixing mechanism is provided on the workbench, the clamping and fixing mechanism includes a stepping motor fixed in the workbench, a worm is fixedly connected to the main shaft end of the stepping motor, the inner wall of the workbench is rotationally connected by a first rotating shaft to a worm gear meshed with the worm, a first gear is fixedly connected to the first rotating shaft, the inner wall of the workbench is rotationally connected to a gear ring meshed with the first gear, the inner wall of the workbench is rotationally connected by four second rotating shafts to four second gears arranged in an equidistant and circumferential manner, all four second gears are meshed with the inner side of the gear ring, a third gear is fixedly connected to each of the four second rotating shafts, four racks meshed with the four third gears respectively are provided in the workbench, a connecting block is fixedly connected to the upper side of each of the four racks, four sliding openings arranged in an equidistant and circumferential manner are formed in the upper side wall of the workbench, and a chuck is fixedly connected to each of the four connecting blocks respectively passing through the four sliding openings.

[0006] As a further scheme of the present utility model: Among them, the first gear is located below the worm gear and there is a gap between them.

[0007] As a further scheme of the present utility model: Among them, the third gear is located above the second gear and there is a gap between them.

[0008] As a further scheme of the present utility model: Among them, all four racks are located above the gear ring and there is a gap between them.

[0009] As a further scheme of the present utility model: Among them, the inner wall of the workbench is rotationally connected to the side wall of the gear ring through a bearing ring.

[0010] As a further scheme of the present utility model: Among them, a limiting rod is fixedly connected to the inner wall of the workbench, a sliding cavity is formed in the side wall of the rack, and one end of the limiting rod penetrates into the sliding cavity and is fixedly connected to a sliding block slidably connected thereto.

[0011] As a further scheme of the present utility model: Among them, the gear ring is composed of a circular ring with meshing teeth provided on both the outer side wall and the inner side wall.

[0012] Compared with the prior art, the beneficial effects of the present utility model are:

[0013] The double-throttle hydrostatic turntable, by setting the clamping and fixing mechanism, when using the device for the double-throttle hydrostatic turntable, first place the workpiece on the workbench and start the stepper motor. Since the worm is meshed with the worm gear, it can drive the first gear fixed to the first rotating shaft to rotate. Since the first gear is meshed with the gear ring, at this time, the gear ring can be driven to rotate. Since the gear ring is meshed with four second gears, at this time, the four third gears fixed to the four second rotating shafts can be driven to rotate simultaneously. Since the four third gears are respectively meshed with four racks, at this time, the four racks displace synchronously in opposite directions, and the chuck fixed to the connecting block can be driven to displace, so as to realize the clamping and fixing of the workpiece, so as to maintain stability during subsequent processing and improve the processing quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0015] Figure 2 is a three-dimensional structural schematic diagram of the workbench of the present utility model;

[0016] Figure 3 is a top view sectional structural schematic diagram of the workbench of the present utility model;

[0017] Figure 4 is of the present utility model Figure 3 magnified structural schematic diagram at position A.

[0018] The corresponding relationship between the labels of each attached drawing in the figure and the component names is as follows:

[0019] 1, device body; 2, workbench; 3, stepper motor; 4, worm; 5, first rotating shaft; 6, worm gear; 7, first gear; 8, gear ring; 9, second rotating shaft; 10, second gear; 11, third gear; 12, rack; 13, connecting block; 14, sliding port; 15, chuck; 16, bearing ring; 17, limiting rod; 18, sliding cavity; 19, slider. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0021] Please refer to Figures 1 to 4, in this practical embodiment, a double-throttle hydrostatic turntable includes a device body 1, which refers to the double-throttle hydrostatic turntable mentioned in the background technology and is an existing technology, so no further explanation will be given here. This device mainly focuses on the improvement of the workbench 2. The workbench 2 is installed at the upper end of the device body 1. The workbench 2 is of a hollow structure. A clamping and fixing mechanism is provided on the workbench 2. The clamping and fixing mechanism includes a stepping motor 3 fixed in the workbench 2. The main shaft end of the stepping motor 3 is fixedly connected with a worm 4. The inner wall of the workbench 2 is rotationally connected with a worm gear 6 meshed with the worm 4 through a first rotating shaft 5. A first gear 7 is fixedly connected to the first rotating shaft 5. A gear ring 8 meshed with the first gear 7 is rotationally connected to the inner wall of the workbench 2. The inner wall of the workbench 2 is rotationally connected with four second gears 10 arranged in an equidistant and circumferential manner through four second rotating shafts 9. All four second gears 10 are meshed with the inner side of the gear ring 8. Third gears 11 are fixedly connected to all four second rotating shafts 9. Four racks 12 respectively meshed with the four third gears 11 are provided in the workbench 2. Connecting blocks 13 are fixedly connected to the upper sides of the four racks 12. Four sliding openings 14 arranged in an equidistant and circumferential manner are formed on the upper side wall of the workbench 2. The four connecting blocks 13 respectively pass through the four sliding openings 14 and are fixedly connected with chucks 15.

[0022] When using this device for the double-throttle hydrostatic turntable, first place the workpiece on the workbench 2, start the stepping motor 3 to work. Since the worm 4 is meshed with the worm gear 6, it can drive the first gear 7 fixed to the first rotating shaft 5 to rotate. Since the first gear 7 is meshed with the gear ring 8, at this time, it can drive the gear ring 8 to rotate. Since the gear ring 8 is meshed with the four second gears 10, at this time, it can drive the four third gears 11 fixed to the four second rotating shafts 9 to rotate simultaneously. Since the four third gears 11 are respectively meshed with the four racks 12, at this time, the four racks 12 displace synchronously in opposite directions, and can drive the chucks 15 fixed to the connecting blocks 13 to displace, so as to realize the clamping and fixing of the workpiece, so as to maintain stability during subsequent processing and thus improve the processing quality.

[0023] As Figure 4 shown: The first gear 7 is located below the worm gear 6 and there is a gap between them to prevent friction between the worm 4 and the first gear 7.

[0024] As Figure 4 shown: The third gear 11 is located above the second gear 10 and there is a gap between them to prevent friction between the rack 12 and the second gear 10.

[0025] As Figure 4 shown: All four racks 12 are located above the gear ring 8 and there is a gap between them to prevent friction between the rack 12 and the gear ring 8.

[0026] As Figure 3As shown: The inner wall of the workbench 2 is rotationally connected to the side wall of the gear ring 8 through a bearing ring 16, facilitating the rotation of the gear ring 8 in the workbench 2.

[0027] As Figure 3 and Figure 4 As shown: The inner wall of the workbench 2 is fixedly connected with a limiting rod 17. A sliding cavity 18 is formed in the side wall of the rack 12. One end of the limiting rod 17 penetrates into the sliding cavity 18 and is fixedly connected with a sliding block 19 that is slidably connected thereto. When the rack 12 displaces, the sliding cavity 18 slides along the sliding block 19 fixed to the limiting rod 17, enabling the rack 12 to maintain a linear displacement.

[0028] As Figure 3 As shown: The gear ring 8 is composed of a circular ring with meshing teeth provided on both the outer side wall and the inner side wall, facilitating meshing transmission.

[0029] Working principle: When using this device for a double-throttle hydrostatic turntable, first place the workpiece on the workbench 2 and start the stepping motor 3. Since the worm 4 meshes with the worm gear 6, it can drive the first gear 7 fixed to the first rotating shaft 5 to rotate. Since the first gear 7 meshes with the gear ring 8, at this time, the gear ring 8 can be driven to rotate. Since the gear ring 8 meshes with the four second gears 10, at this time, the four third gears 11 fixed to the four second rotating shafts 9 can be driven to rotate simultaneously. Since the four third gears 11 respectively mesh with the four racks 12, at this time, the four racks 12 displace synchronously towards each other, driving the chuck 15 fixed to the connecting block 13 to displace, realizing the clamping and fixing of the workpiece, so as to maintain stability during subsequent processing and thus improve the processing quality.

[0030] The above-mentioned is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. A double-throttling hydrostatic turntable, comprising a device body (1), characterized in that, A workbench (2) is installed at the upper end of the device body (1). The workbench (2) is of a hollow structure. A clamping and fixing mechanism is provided on the workbench (2). The clamping and fixing mechanism includes a stepping motor (3) fixed in the workbench (2). The main shaft end of the stepping motor (3) is fixedly connected to a worm (4). The inner wall of the workbench (2) is rotationally connected by a first rotating shaft (5) to a worm gear (6) meshed with the worm (4). A first gear (7) is fixedly connected to the first rotating shaft (5). The inner wall of the workbench (2) is rotationally connected to a toothed ring (8) meshed with the first gear (7). The inner wall of the workbench (2) is rotationally connected by four second rotating shafts (9) to four second gears (10) arranged equidistantly in a circumferential manner. All four second gears (10) are meshed with the inner side of the toothed ring (8). A third gear (11) is fixedly connected to each of the four second rotating shafts (9). Four racks (12) respectively meshed with the four third gears (11) are provided in the workbench (2). A connecting block (13) is fixedly connected to the upper side of each of the four racks (12). Four sliding openings (14) arranged equidistantly in a circumferential manner are formed in the upper side wall of the workbench (2). Each of the four connecting blocks (13) passes through one of the four sliding openings (14) and is fixedly connected to a chuck (15).

2. The dual-throttle hydrostatic rotary table according to claim 1, characterized in that, The first gear (7) is located below the worm gear (6) and there is a gap between them.

3. The double-throttling hydrostatic rotary table according to claim 1, characterized in that, The third gear (11) is located above the second gear (10) and there is a gap between them.

4. A dual throttling hydrostatic rotary table according to claim 1, characterized in that, All four racks (12) are located above the toothed ring (8) and there is a gap between them.

5. A dual-throttle hydrostatic rotary table according to claim 1, characterized in that, The inner wall of the workbench (2) is rotationally connected to the side wall of the toothed ring (8) through a bearing ring (16).

6. A dual-throttle hydrostatic rotary table according to claim 5, characterized in that, A limiting rod (17) is fixedly connected to the inner wall of the workbench (2). A sliding cavity (18) is formed in the side wall of the rack (12). One end of the limiting rod (17) penetrates into the sliding cavity (18) and is fixedly connected to a sliding block (19) slidably connected thereto.

7. A dual-throttle hydrostatic rotary table according to claim 1, characterized in that, The toothed ring (8) is composed of a circular ring with meshing teeth provided on both the outer side wall and the inner side wall.

Images