A vertical hydraulic clamp

Abstract

The utility model discloses a vertical hydraulic clamp, include: circular base, annular cylinder wall, vertical clamping mechanism and hydraulic distribution valve, circular base is installed in the rotary workbench, and annular cylinder wall is ringed in circular base, annular cylinder wall and circular base surround and set up clamping work cavity, the rotary workbench can make circular base and annular cylinder wall rotating activity, annular cylinder wall is provided with the vertical mounting plate of the board piece, vertical clamping mechanism and hydraulic distribution valve are installed in vertical mounting plate, vertical clamping mechanism includes a plurality of hydraulic clamping subassembly connected with hydraulic distribution valve, the utility model discloses, and the clamp whole is directly installed on the rotary workbench through circular base, can realize the synchronous rotation of workpiece and clamp under the clamping state, the design makes the hydraulic clamping force direct action on the vertical or inclined facade of workpiece, and the vertical posture of perfect adaptation large -scale workpiece is placed, and the rigidity and the anti -vibration of clamping under the strong cutting working condition are ensured.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic clamping technology, and in particular to a vertical hydraulic clamping fixture. Background Technology

[0002] Hydraulic clamps, with their significant advantages such as large clamping force, stability and reliability, rapid operation, and ease of automation control, have become indispensable key equipment in modern machining production lines, and are widely used for positioning and clamping various workpieces. However, existing mainstream hydraulic clamping systems have obvious limitations in application scenarios: they are usually designed to operate on fixed horizontal worktables or vertical mounting surfaces, relying on the relatively rigid clamping platform provided by the machine tool itself.

[0003] This structural approach is particularly problematic when dealing with large, complex, and irregularly shaped heavy workpieces (such as large housings, valve blocks, irregularly shaped structural components, and energy equipment parts). To ensure machining quality and cover all the features to be machined, the process often requires the workpiece to undergo multiple precise angular rotations during machining to match the tool feed path and machining posture. When the workpiece is conventionally clamped flat, achieving this multi-angle machining typically requires repeated disassembly, repositioning, and clamping of the workpiece, resulting in extremely low efficiency, severely impacting production cycle time, and making repeated positioning errors difficult to avoid.

[0004] Therefore, there is a need to find a vertical hydraulic clamp that can be adapted to the vertical placement of large workpieces and is easy to rotate. Utility Model Content

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a vertical hydraulic clamp.

[0006] The technical solution adopted by one embodiment of this utility model to solve its technical problem is: a vertical hydraulic clamp, including: a circular base, an annular cylindrical wall, a vertical clamping mechanism and a hydraulic distribution valve;

[0007] The circular base is mounted on a rotary worktable, and the annular cylindrical wall is arranged around the circular base; the annular cylindrical wall and the circular base surround a clamping working cavity; the rotary worktable allows the circular base and the annular cylindrical wall to rotate.

[0008] The annular cylindrical wall is provided with a plate-shaped vertical mounting plate; the vertical clamping mechanism and the hydraulic distribution valve are mounted on the vertical mounting plate; the vertical clamping mechanism includes several hydraulic clamping components connected to the hydraulic distribution valve.

[0009] Optionally, the circular base is provided with a second clamping mechanism, which is detachably mounted on the circular base.

[0010] Optionally, the second clamping mechanism includes an upper clamping assembly, a lower clamping assembly, and a second distribution valve.

[0011] Optionally, the second clamping mechanism is provided with a second clamping base; the second clamping base is detachably installed on the circular base; the upper clamping assembly, the lower clamping assembly and the second distribution valve are provided on the second clamping base.

[0012] Optionally, the annular cylindrical wall is provided with a plurality of air passage slots.

[0013] Optionally, a connecting flange is provided below the circular base.

[0014] Optionally, the vertical mounting plate is provided with at least two fixing seats along the vertical direction, and the bottom of the workpiece can be locked in the fixing seats.

[0015] Optionally, the fixing seat is provided with a positioning protrusion.

[0016] The beneficial effects of this invention are as follows: The fixture is directly mounted on the rotary table via a circular base, allowing for synchronous rotation of the workpiece and fixture while clamped. The machining angle can be quickly adjusted without repeatedly disassembling the workpiece, completely avoiding the efficiency loss and accuracy errors caused by repetitive positioning in traditional clamping methods, and significantly shortening machining auxiliary time. The rigid frame formed by the annular cylindrical wall and the vertical mounting plate provides a stable mounting foundation for the vertical clamping mechanism. This design allows the hydraulic clamping force to act directly on the vertical or inclined surface of the workpiece, perfectly adapting to the vertical placement of large workpieces and ensuring clamping rigidity and vibration resistance under heavy cutting conditions. The hydraulic distribution valve is directly integrated into the vertical mounting plate of the annular cylindrical wall, with a compact oil circuit layout close to the actuator. Combined with the symmetry of the annular structure, there is no risk of hydraulic lines becoming entangled when the fixture rotates with the rotary table, ensuring stable and reliable system pressure and guaranteeing the durability and safety of the clamping force during continuous rotary machining.

[0017] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0019] Figure 1 This is a schematic diagram of the vertical hydraulic clamp of this utility model;

[0020] Figure 2 for Figure 1 A schematic diagram of the structure after the neutral hydraulic clamp removes the workpiece;

[0021] Figure 3 for Figure 2 A schematic diagram of the structure of a neutral hydraulic clamp from another perspective.

[0022] Explanation of key component symbols:

[0023] 10. Circular base; 11. Connecting flange; 20. Annular cylindrical wall; 21. Vertical mounting plate; 22. Air passage duct; 23. Fixed seat; 231. Positioning protrusion; 30. Vertical clamping mechanism; 31. Hydraulic clamping assembly; 40. Hydraulic distribution valve; 50. Second clamping mechanism; 51. Upper clamping assembly; 52. Lower clamping assembly; 53. Second distribution valve; 54. Second clamping base. Detailed Implementation

[0024] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0025] In the description of this utility model, "multiple" means two or more; "greater than," "less than," and "exceeding" are understood to exclude the stated number; "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly specifying the number of indicated technical features or their sequential relationship.

[0026] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] In this utility model, unless otherwise explicitly defined, the terms "setting," "installing," and "connecting" should be interpreted broadly. For example, they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to a fixed connection, a detachable connection, or an integral molding; they can refer to a mechanical connection; they can refer to the internal connection of two components or the interaction between two components. Those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0028] Example

[0029] Reference Figures 1 to 3 The present invention proposes a vertical hydraulic clamp, comprising: a circular base 10, an annular cylindrical wall 20, a vertical clamping mechanism 30, and a hydraulic distribution valve 40;

[0030] A circular base 10 is mounted on a rotary worktable, and an annular cylindrical wall 20 is arranged around the circular base 10; the annular cylindrical wall 20 and the circular base 10 surround a clamping working cavity; the rotary worktable allows the circular base 10 and the annular cylindrical wall 20 to rotate.

[0031] The annular cylindrical wall 20 is provided with a plate-shaped vertical mounting plate 21; the vertical clamping mechanism 30 and the hydraulic distribution valve 40 are mounted on the vertical mounting plate 21; the vertical clamping mechanism 30 includes a plurality of hydraulic clamping components 31 connected to the hydraulic distribution valve 40.

[0032] In this invention, the fixture is directly mounted on the rotary table via a circular base 10, allowing for synchronous rotation of the workpiece and fixture while clamped. This eliminates the need for repeated workpiece disassembly, enabling rapid adjustment of the machining angle and completely avoiding the efficiency losses and accuracy errors caused by repetitive positioning in traditional clamping methods, significantly reducing machining auxiliary time. The rigid frame formed by the annular cylindrical wall 20 and the vertical mounting plate 21 provides a stable mounting foundation for the vertical clamping mechanism 30. This design allows the hydraulic clamping force to act directly on the vertical or inclined surface of the workpiece, perfectly adapting to the vertical placement of large workpieces and ensuring clamping rigidity and vibration resistance under heavy cutting conditions. The hydraulic distribution valve 40 is directly integrated into the vertical mounting plate 21 of the annular cylindrical wall 20, with a compact oil circuit layout close to the actuator. Combined with the symmetry of the annular structure, there is no risk of hydraulic lines becoming entangled when the fixture rotates with the rotary table, ensuring stable and reliable system pressure and guaranteeing the durability and safety of the clamping force during continuous rotary machining.

[0033] In this embodiment, the circular base 10 is provided with a second clamping mechanism 50, which is detachably mounted on the circular base 10. By adding a detachable second clamping mechanism 50 to the circular base 10, auxiliary fixation of the bottom surface or lateral boss of the workpiece is achieved, solving the problem of insufficient coverage of complex workpieces by a single vertical clamp. The modular design allows the fixture to quickly adjust the clamping points according to the characteristics of the workpiece without replacing the entire fixture, reducing the switching costs of multi-variety production.

[0034] Specifically, the second clamping mechanism 50 includes an upper clamping assembly 51, a lower clamping assembly 52, and a second distribution valve 53. The coordinated design of the upper clamping assembly 51 (to prevent workpiece settling) and the lower clamping assembly 52 (to prevent workpiece lifting) counteracts the effects of centrifugal force and cutting force during workpiece rotation machining, ensuring dynamic balance of clamping force; the second distribution valve 53 is dedicated to the bottom mechanism, avoiding interference with the oil circuit of the vertical clamping system and achieving precise adjustment of zoned pressure.

[0035] Furthermore, the second clamping mechanism 50 is provided with a second clamping base 54; the second clamping base 54 is detachably mounted on the circular base 10; the upper clamping assembly 51, the lower clamping assembly 52, and the second distribution valve 53 are disposed on the second clamping base 54. All bottom clamping elements are integrated into a single second clamping base 54 and connected to the base by bolts / locating pins, achieving integral assembly and disassembly, which greatly reduces production line downtime.

[0036] In this embodiment, the annular cylindrical wall 20 is provided with a plurality of air passage slots 22. The air passage slots 22 form an airflow circulation inside and outside the annular cylindrical wall 20, which promptly dissipates cutting heat and avoids precision loss caused by workpiece thermal deformation. The slots provide clearance space for the cutting tool, which is especially suitable for machining deep cavities or irregular contours, reducing the risk of collision between the fixture and the cutting tool.

[0037] In this embodiment, a connecting flange 11 is provided below the circular base 10. The connecting flange 11 has a standardized design, is compatible with mainstream brand rotary worktables, and improves deployment efficiency.

[0038] In this embodiment, the vertical mounting plate 21 is provided with at least two fixing seats 23 along the vertical direction, and the bottom of the workpiece can be locked in the fixing seats 23. The vertical fixing seats 23 form a mechanical limit on the bottom of the workpiece, which, together with the hydraulic clamping, forms a dual guarantee of "hard positioning + soft locking". The at least two fixing seats 23 distribute the gravity load of the workpiece and avoid deformation of the base caused by local stress concentration.

[0039] Specifically, the fixed base 23 is provided with a positioning protrusion 231. The positioning protrusion 231 matches the pre-made process hole / datum edge of the workpiece, and the pre-positioning is completed when the workpiece is placed, which shortens the subsequent fine adjustment time.

[0040] Of course, this utility model is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this utility model. All such equivalent modifications and substitutions are included within the scope defined by the claims of this application.

Claims

1. A vertical hydraulic clamp, characterized in that, include: A circular base (10), an annular cylindrical wall (20), a vertical clamping mechanism (30), and a hydraulic distribution valve (40); The circular base (10) is mounted on a rotary worktable, and the annular cylindrical wall (20) is arranged around the circular base (10); the annular cylindrical wall (20) and the circular base (10) surround a clamping working cavity; the rotary worktable allows the circular base (10) and the annular cylindrical wall (20) to rotate. The annular cylindrical wall (20) is provided with a plate-shaped vertical mounting plate (21); the vertical clamping mechanism (30) and the hydraulic distribution valve (40) are mounted on the vertical mounting plate (21); the vertical clamping mechanism (30) includes a plurality of hydraulic clamping components (31) connected to the hydraulic distribution valve (40).

2. The vertical hydraulic clamp according to claim 1, characterized in that: The circular base (10) is provided with a second clamping mechanism (50), which is detachably mounted on the circular base (10).

3. The vertical hydraulic clamp according to claim 2, characterized in that: The second clamping mechanism (50) includes an upper clamping assembly (51), a lower clamping assembly (52), and a second distribution valve (53).

4. The vertical hydraulic clamp according to claim 3, characterized in that: The second clamping mechanism (50) is provided with a second clamping base (54); the second clamping base (54) is detachably installed on the circular base (10); the upper clamping assembly (51), the lower clamping assembly (52) and the second distribution valve (53) are provided on the second clamping base (54).

5. The vertical hydraulic clamp according to claim 1, characterized in that: The annular cylindrical wall (20) has several air passage slots (22).

6. The vertical hydraulic clamp according to claim 1, characterized in that: A connecting flange (11) is provided below the circular base (10).

7. The vertical hydraulic clamp according to claim 1, characterized in that: The vertical mounting plate (21) is provided with at least two fixing seats (23) along the vertical direction, and the bottom of the workpiece can be locked in the fixing seat (23).

8. The vertical hydraulic clamp according to claim 7, characterized in that: The fixed base (23) is provided with a positioning protrusion (231).

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