Static pressure centering frame with pressure regulating structure

Abstract

The utility model relates to static pressure center frame technology field, and the lifting seat is set up on the base, and the bottom support jaw is fixedly set in the upside of lifting seat, and the side support is two and presents left and right symmetry and sets up in the left and right sides of lifting seat, and the side jaw is two and respectively fixedly set in the upper end of two side supports, and the side jaw of two sides presents left and right symmetry and sets up, and the hydraulic pump station is array and is in parallel and sets up, and the hydraulic pump station is fixedly set on the lower side wall of base, and the hydraulic pump station is through pipeline respectively with the bottom support jaw and the side jaw of two sides and is through connection and sets up, and it is through bottom lifting jaw structure and two sides open and shut jaw structure, and sets up the bushing structure of detachable, and is connected through the pump station, realizes the clamping of different model workpieces and adjusts oil pressure, realizes the stable, accurate clamping support of static pressure center frame to different workpieces.

Description

Technical Field

[0001] This utility model relates to the field of hydrostatic center frame technology, specifically to a hydrostatic center frame with a pressure adjustment structure. Background Technology

[0002] A hydrostatic center rest is a horizontal machine tool used for machining large-span workpieces. Its main function is to support and support the workpiece, ensuring its stability during machining. Unlike traditional wheel-type support center rests, the hydrostatic center rest uses grippers with oil chambers to hold the workpiece. By injecting high-pressure hydraulic oil, an oil film is formed between the workpiece and the grippers, creating a "floating" state for the workpiece. This greatly reduces mechanical friction during workpiece rotation, effectively minimizing surface wear. Furthermore, the center axis positioning accuracy is significantly higher than that of mechanically driven center rests. However, because the hydrostatic center rest requires precise contact with the workpiece surface, traditional structures can only be adjusted for a single workpiece. They cannot adapt to different workpiece models, and cannot adjust hydraulic pressure to accommodate changes in workpiece weight. This can easily lead to uncontrolled hydraulic pressure imbalances, causing eccentric displacement and scraping of the workpiece. Therefore, improvements and optimizations to the traditional hydrostatic center rest are necessary. Utility Model Content

[0003] The purpose of this utility model is to address the defects and deficiencies of the existing technology by providing a hydrostatic center frame with a pressure adjustment structure. It uses a bottom lifting gripper structure and a two-sided opening and closing gripper structure, and is equipped with a detachable bushing structure. By connecting with a pump station, it can clamp different types of workpieces and adjust the oil pressure, thus achieving stable and precise clamping and support of the hydrostatic center frame for different workpieces.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: It includes a base, and it also includes: A lifting seat, wherein the lifting seat is movably mounted on the base; The bottom support gripper is fixedly mounted above the lifting seat; Side supports, wherein there are two side supports which are symmetrically arranged on the left and right sides of the lifting seat; The side grippers are two in number and are fixedly mounted on the upper ends of the two side supports, and the side grippers on both sides are arranged symmetrically from left to right. The hydraulic pump station is an array of pump stations connected in parallel, and the pump stations are fixedly mounted on the lower side wall of the base. The hydraulic pump station is connected to the bottom support clamp and the side clamps on both sides through pipelines.

[0005] Preferably, a bottom support bushing is fixedly provided on the bottom support claw, and a side bushing is fixedly provided on the side claw, and the bottom support bushing and the two side bushings on both sides are distributed at equal angles of 120°.

[0006] Preferably, a mounting seat is fixedly mounted on the base, and a lifting seat is movably inserted into the upper port of the mounting seat. A lifting threaded sleeve is screwed onto the mounting seat via a bearing, and a lifting threaded rod is fixedly mounted on the lifting seat. The lifting threaded rod is screwed into the lifting threaded sleeve via a threaded connection.

[0007] Preferably, the lifting seat is a hollow structure with an opening at the lower end, the lifting threaded rod is disposed inside the inner cavity of the lifting seat, the lifting seat is movably sleeved on the outside of the lifting threaded rod, and the outer wall of the lifting seat and the inner wall of the mounting seat are guided and slidably disposed by a linear keyway.

[0008] Preferably, the base is symmetrically and fixedly provided with slide rail pairs on both sides of the lifting seat, and a tensioning seat is slidably provided on the slide rail pairs, with the side bracket fixedly provided on the tensioning seat.

[0009] Preferably, a tensioning threaded rod is threadedly inserted into the tensioning seat, and the left and right tensioning threaded rods are arranged in opposite directions. The tensioning threaded rod is screwed onto the base through a bearing, and the tensioning threaded rod is arranged parallel to the slide rail pair.

[0010] Preferably, a transmission rod is screwed onto the base via a bearing, and two left and right tension threaded rods are respectively connected to the two ends of the transmission rod via a spur gear set.

[0011] Compared with the prior art, the beneficial effects of this utility model are: This solution achieves clamping of workpieces of different sizes by setting up a three-jaw structure for the bottom support clamping claw and side clamping claw, in conjunction with the hollow oil chamber inside, and designing detachable bottom support bushings and side bushings of different sizes, thereby realizing the clamping support of the hydrostatic center frame for different workpieces. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model.

[0013] Figure 2 yes Figure 1 Rear side view.

[0014] Figure 3 This is a schematic diagram of the lifting seat and the bottom support gripper in this utility model.

[0015] Figure 4 This is a structural schematic diagram of the mounting base and lifting threaded sleeve in this utility model.

[0016] Explanation of reference numerals in the attached figures: 1. Base, 2. Lifting seat, 3. Base support gripper, 4. Side bracket, 5. Side gripper, 6. Hydraulic pump station, 7. Base support bushing, 8. Side bushing, 9. Mounting seat, 10. Lifting threaded sleeve, 11. Lifting threaded rod, 12. Slide rail pair, 13. Opening and closing seat, 14. Opening and closing threaded rod, 15. Transmission rod. Detailed Implementation

[0017] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. The preferred embodiments described are only examples. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0018] like Figure 1-4 As shown, the specific implementation adopts the following technical solution: This specific embodiment includes a base 1, a bottom support gripper 3, and side grippers 5. A mounting base 9 is fixedly mounted on the base 1. The mounting base 9 has an open upper cavity structure. A lifting seat 2 is movably inserted into the upper port of the mounting base 9, and the outer wall of the lifting seat 2 and the inner wall of the mounting base 9 are slidably fitted by a linear keyway. The lifting seat 2 has an open lower cavity structure. A lifting threaded sleeve 10 is provided inside the mounting base 9 and is movably inserted into the lifting seat 2. The lower end of the lifting threaded sleeve 10 is screwed onto the base plate of the mounting base 9 via a bearing. A lifting threaded rod 11 is fixedly provided inside the lifting seat 2 and is screwed into the lifting threaded sleeve 10. A bottom support gripper 3 is fixedly mounted on the upper end of the lifting seat 2. The bottom support gripper 3 has an internal cavity structure, and a bottom support bushing 7 is sleeved and fixed on the bottom support gripper 3. The port edge of the bottom support bushing 7 is concave. The base 1 features an arc-shaped structure. Slide rail pairs 12 are symmetrically fixed on both sides of the mounting base 9. A tensioning seat 13 is slidably clamped onto the slide rail pairs 12. A side support 4 is fixedly mounted on the tensioning seat 13, and a side clamp 5 is fixedly mounted on the side support 4. The side clamp 5 has an internal cavity structure. A side bushing 8 is sleeved and fixed on the side clamp 5, and the side of the side bushing 8 has an inwardly concave arc-shaped structure. A tensioning threaded rod 14 is threadedly threaded onto the tensioning seat 13, and the threads of the two tensioning threaded rods 14 are arranged in opposite directions. The tensioning threaded rod 14 is screwed onto the base 1 via bearings. A transmission rod 15 is screwed onto the base 1 via bearings. The two tensioning threaded rods 14 are respectively connected to the two ends of the transmission rod 15 via a spur gear set. A hydraulic pump station 6 is fixedly mounted on the base 1, and the hydraulic pump station 6 is connected to the bottom support clamp 3 and the side clamp 5 via pipes.

[0019] When using this device, select the corresponding size of the bottom support bushing 7 according to the diameter of the workpiece and install it on the bottom support jaw 3. Select the corresponding size of the side bushing 8 and install it on the side jaw 5. After the bottom support jaw 3 and the side jaw 5 are closed, the bottom support bushing 7 and the side bushing 8 will fit snugly against the outer side wall of the workpiece. After installing the bottom support bushing 7 and the side bushing 8, lower the lifting seat 2 to open the opening seats 13 on both sides. Place the workpiece on the bottom support bushing 7. Then, rotate the lifting threaded rod 11 to push the lifting seat 2 to rise. Rotate the transmission rod 15, which in turn drives the opening threaded rods 14 on both sides to rotate through the spur gear set, thereby pushing the opening seats 13 on both sides to close, thus driving the side... The bracket 4 and its side grippers 5 close, thereby closing the bottom support grippers 3 and the side grippers 5, which then hold the workpiece through the bottom support bushing 7 and the side bushing 8 respectively. Then, the hydraulic pump station 6 supplies oil into the bottom support grippers 3 and the side grippers 5 respectively. After the oil fills the bottom support grippers 3, an oil film is formed between the bottom support bushing 7 and the workpiece surface. After the oil fills the side grippers 5, an oil film is formed between the side bushing 8 and the workpiece surface. This oil film layer creates a "floating" effect on the workpiece, thus completing the clamping of the workpiece. When the weight of the workpiece is different, and different oil pressures need to be applied to support the workpiece, the output power of the hydraulic pump station 6 is adjusted to regulate the oil pressure.

[0020] Compared with the prior art, the beneficial effects of this utility model are: 1. This device forms a three-jaw clamping structure by setting the bottom support jaw 3 and the side jaw 5, thereby realizing the support and clamping of large-span workpieces. It also connects to the pump station through the oil cavity structure in each jaw to form a hydrostatic center frame structure, thereby achieving high-precision clamping of the workpiece. 2. This device is equipped with a detachable bottom support bushing 7 and side bushings 8, so that different types of bushings can be selected when clamping workpieces of different diameters.

[0021] For those skilled in the art, modifications can be made to the technical solutions described in the foregoing embodiments, and equivalent substitutions can be made to some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A hydrostatic center frame with a pressure adjustment structure, comprising a base (1); characterized in that, It also includes: The lifting seat (2) is movably mounted on the base (1); The bottom support gripper (3) is fixedly installed above the lifting seat (2); Side brackets (4), the side brackets (4) are two in number and are symmetrically arranged on the left and right sides of the lifting seat (2); Side grippers (5), there are two side grippers (5) and they are respectively fixedly installed on the upper ends of the two side supports (4), and the side grippers (5) on both sides are arranged symmetrically from left to right; Hydraulic pump station (6), wherein the hydraulic pump station (6) is an array and is arranged in parallel, and the hydraulic pump station (6) is fixedly installed on the lower side wall of the base (1); The hydraulic pump station (6) is connected to the bottom support clamp (3) and the side clamps (5) on both sides through pipes.

2. The hydrostatic center frame with pressure adjustment structure according to claim 1, characterized in that: The bottom support clamp (3) is fixedly provided with a bottom support bushing (7), and the side clamp (5) is fixedly provided with a side bushing (8). The bottom support bushing (7) and the two side bushings (8) on both sides are distributed at equal angles of 120°.

3. A hydrostatic center frame with a pressure adjustment structure according to claim 2, characterized in that: A mounting seat (9) is fixedly mounted on the base (1). A lifting seat (2) is movably inserted into the upper port of the mounting seat (9). A lifting threaded sleeve (10) is screwed onto the mounting seat (9) via a bearing. A lifting threaded rod (11) is fixedly mounted on the lifting seat (2). The lifting threaded rod (11) is screwed into the lifting threaded sleeve (10) via a threaded connection.

4. A hydrostatic center frame with a pressure adjustment structure according to claim 3, characterized in that: The lifting seat (2) is a hollow structure with an opening at the lower end. The lifting threaded rod (11) is set inside the inner cavity of the lifting seat (2). The lifting seat (2) is movably sleeved on the outside of the lifting threaded rod (11). The outer wall of the lifting seat (2) and the inner wall of the mounting seat (9) are guided and slidably connected by a linear keyway.

5. A hydrostatic center frame with a pressure adjustment structure according to claim 4, characterized in that: The base (1) is symmetrically fixed with slide rail pairs (12) on both sides of the lifting seat (2), and a tensioning seat (13) is slidably arranged on the slide rail pairs (12), and the side bracket (4) is fixedly arranged on the tensioning seat (13).

6. A hydrostatic center frame with a pressure adjustment structure according to claim 5, characterized in that: A tensioning threaded rod (14) is threadedly inserted into the tensioning seat (13), and the helical directions of the tensioning threaded rods (14) on the left and right sides are opposite. The tensioning threaded rod (14) is screwed onto the base (1) through a bearing, and the tensioning threaded rod (14) is parallel to the slide rail pair (12).

7. A hydrostatic center frame with a pressure adjustment structure according to claim 6, characterized in that: The base (1) is provided with a transmission rod (15) screwed on by a bearing, and the two left and right tension threaded rods (14) are respectively connected to the two ends of the transmission rod (15) through a spur gear set.

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