Hydraulic clamp anti-dislocation high-precision positioning module

Abstract

The utility model discloses hydraulic clamp mistake proofing high accuracy positioning module, including work table, the top of work table is provided with a plurality of workpiece bodies, the right side installation of work table top has two inclined plates, the top of work table and the position of corresponding workpiece body is provided with positioning and placing subassembly. The utility model discloses a plurality of workpiece bodies are set up on the top of work table, and the independent positioning and placing subassembly and drive clamping assembly are matched, realize the parallel positioning and clamping of multiple workpieces, thereby break through single workpiece clamping limitation, and batch processing efficiency improves, and the design of the double positioning area of the placing plate and the inclined plate of positioning and placing subassembly can simultaneously adapt the plane reference workpiece and the inclined plane reference workpiece, and the same workbench can synchronous processing automobile engine cylinder body, plane positioning, with cylinder cover inclined plane drilling piece, inclined plane positioning, do not need to disassemble and replace the fixture main body structure, and the flexibility when using is improved.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic clamping technology, specifically a high-precision positioning module for hydraulic clamping to prevent misalignment. Background Technology

[0002] In the field of precision machinery manufacturing, such as the machining of automotive engine cylinder blocks, milling of aerospace parts, and precision gear grinding, hydraulic clamps have advantages such as stable clamping force, fast response speed, and strong automation adaptability.

[0003] According to application number CN202323439111.6, a highly adaptable hydraulic clamp is disclosed. The highly adaptable hydraulic clamp includes a clamp base plate, clamp bodies are provided on both sides of the top of the clamp base plate, and an mounting component is provided on one outer surface of the clamp body. The mounting component has the function of quickly installing the clamp body, and a fixing component is provided at the top of the mounting component. The fixing component has the function of quickly fixing the clamp body.

[0004] The fixtures in the above cases can only clamp and fix a single workpiece, which seriously affects work efficiency. Moreover, although the fixture adopts a double clamping block structure, there is no synchronous linkage mechanism between the clamping blocks. During clamping, one side of the clamping block may contact the workpiece first while the other side lags behind, causing the workpiece to shift under force, increasing the positioning error, and seriously affecting the stability during clamping. To address this, we provide a high-precision positioning module for hydraulic fixtures to prevent misalignment. Utility Model Content

[0005] The purpose of this invention is to provide a high-precision positioning module for hydraulic clamps to prevent misalignment, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-precision positioning module for hydraulic clamping to prevent misalignment, including a worktable, on which several workpiece bodies are arranged above the worktable, and two inclined plates are installed on the right side of the top of the worktable. A positioning and placement component is arranged on the top of the worktable and at the position corresponding to the workpiece body. The positioning and placement component is used to position and support the workpiece body. A drive clamping component is arranged on the worktable, and the drive clamping component is used to clamp and fix the workpiece body.

[0007] Preferably, the positioning and placement assembly includes a placement plate, which is installed on the top of the workbench. Two positioning blocks are installed on the top of the placement plate and on both the front and rear sides of the top of the inclined plate. A positioning groove is provided on the bottom of the workpiece body at the position corresponding to the positioning block.

[0008] Preferably, the drive clamping assembly includes a number of hydraulic cylinders, which are respectively installed at the bottom of the worktable, and mounting seats are installed at the top of the worktable and the top of the inclined plate, corresponding to the positions of the hydraulic cylinders.

[0009] Preferably, the output end of the hydraulic cylinder passes through the mounting base and extends to the outside of it to install a concave plate. The two sides of the inner wall of the concave plate are fixedly connected by a fixed shaft, and the surfaces of the fixed shaft are respectively rotatably connected to a first clamping block and a second clamping block.

[0010] Preferably, a connecting block is installed on the top of the mounting base corresponding to the positions of the first clamping block and the second clamping block, and the two connecting blocks are respectively hinged to the first clamping block and the second clamping block.

[0011] Preferably, the two positioning blocks on the placement plate are cylindrical and flat, respectively, and the two positioning blocks on the inclined plate are both flat.

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

[0013] 1. This utility model sets several workpiece bodies above the worktable and equips them with independent positioning and placement components and drive clamping components to achieve parallel positioning and clamping of multiple workpieces, thereby breaking through the limitations of single workpiece clamping and improving batch processing efficiency. The dual positioning area design of the placement plate and inclined plate of the positioning and placement component can simultaneously adapt to planar reference workpieces and inclined reference workpieces. For example, the same worktable can simultaneously process automobile engine cylinder blocks with planar positioning and cylinder head inclined drilling parts with inclined positioning, without the need to disassemble and replace the main structure of the fixture, thus improving the flexibility of use.

[0014] 2. This utility model achieves radial positioning by precisely inserting the positioning block into the workpiece positioning groove, thus preventing the workpiece from shifting left or right or forward or backward. When the hydraulic cylinder drives the concave plate to rise, the concave plate drives the first clamping block and the second clamping block to rotate synchronously through the fixed shaft. At the same time, the connecting block restricts the rotation trajectory of the clamping blocks through the hinge, ensuring that the two clamping blocks approach the workpiece at the same speed and at the same angle. This avoids the situation in traditional fixtures where one side of the clamping block contacts first and the other side lags behind, thereby improving the stability of the workpiece being positioned and clamped, and also making the clamping force evenly transmitted, protecting the thin-walled workpiece from deformation. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the workpiece body after positioning according to this utility model;

[0016] Figure 2 This is a three-dimensional structural diagram of the disassembled workpiece body of this utility model;

[0017] Figure 3 This is a three-dimensional structural diagram of the workpiece body of this utility model, disassembled from a bottom view;

[0018] Figure 4 This is a three-dimensional structural diagram of the placement plate, positioning block, and drive clamping assembly of this utility model;

[0019] Figure 5 This is a three-dimensional structural diagram of the first and second clamping blocks of the drive clamping assembly of this utility model, separated.

[0020] Figure 6 This is a three-dimensional structural diagram of the mounting base, concave plate, fixed shaft, connecting block and hinge of this utility model.

[0021] In the diagram: 1. Worktable; 100. Workpiece body; 101. Inclined plate; 2. Positioning and placement assembly; 21. Placement plate; 22. Positioning block; 23. Positioning groove; 3. Drive and clamping assembly; 31. Hydraulic cylinder; 32. Mounting base; 33. Concave plate; 34. Fixed shaft; 35. First clamping block; 36. Second clamping block; 37. Connecting block; 38. Hinge. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-6 The hydraulic clamp anti-misalignment high-precision positioning module includes a worktable 1. Support legs are bolted to the four corners of the bottom of the worktable 1, supporting the worktable 1 and keeping the top surface of the worktable 1 level with the ground. Several workpiece bodies 100 are set on the top of the worktable 1. The workpiece body 100 is the target object for positioning and clamping. The positioning groove 23 is designed according to the processing requirements, such as plane milling, inclined drilling, and gear grinding, to ensure precise matching with the positioning block 22. Two inclined plates 101 are installed on the right side of the top of the worktable 1. The inclined plates 101 provide inclined positioning reference and are adapted to workpieces that need to be processed on an inclined surface, solving the problem that the traditional flat worktable 1 cannot adapt to inclined workpieces. The inclined plates 101 are fixedly connected to the worktable 1 by welding.

[0024] A positioning and placement assembly 2 is provided on the top of the workbench 1, corresponding to the position of the workpiece body 100. The positioning and placement assembly 2 is used to position and support the workpiece body 100. The positioning and placement assembly 2 includes a placement plate 21, which is installed on the top of the workbench 1 and is fixedly connected to the workbench 1 by welding. The placement plate 21 carries the planar reference workpiece and provides planar support for the workpiece. Two positioning blocks 22 are installed on the top of the placement plate 21 and on the front and rear sides of the top of the inclined plate 101. The positioning blocks 22 are inserted into the positioning grooves 23 of the workpiece body 100 to achieve radial positioning of the workpiece. To prevent the workpiece from shifting left or right or forward or backward, the two positioning blocks 22 on the placement plate 21 are cylindrical and flat, respectively, and the two positioning blocks 22 on the inclined plate 101 are flat. A positioning groove 23 is provided at the bottom of the workpiece body 100 and at the position corresponding to the positioning block 22, so that the positional error of the workpiece is limited within the fit gap between the positioning block 22 and the positioning groove 23. The workpiece body 100 is placed on the placement plate 21 and the inclined plate 101 respectively. The side of the positioning block 22 near the positioning groove 23 penetrates the positioning groove 23 and extends into it to contact the inner wall of the positioning groove 23.

[0025] The worktable 1 is equipped with a drive clamping assembly 3, which is used to clamp and fix the workpiece body 100. The drive clamping assembly 3 includes several hydraulic cylinders 31, which are installed at the bottom of the worktable 1. The hydraulic cylinders 31 are fixedly connected to the worktable 1 by bolts and are electrically connected to an external hydraulic system. The hydraulic cylinders 31 provide the clamping power source. Through the extension and retraction of the output end, the concave plate 33 is raised and lowered, thereby driving the first clamping block 35 and the second clamping block 36 to open and close synchronously. The output force is adjustable from 3000-8000N to adapt to the clamping requirements of different workpieces. The hydraulic system pressure is stable, with a working pressure of 6-8MPa. To prevent workpiece deformation caused by clamping force fluctuations, mounting seats 32 are installed on the top of the worktable 1 and the top of the inclined plate 101, corresponding to the positions of the hydraulic cylinder 31. The mounting seats 32 are fixedly connected to the worktable 1 by bolts. The output end of the hydraulic cylinder 31 passes through the mounting seat 32 and extends to its outside, where a concave plate 33 is installed. The surface of the output end of the hydraulic cylinder 31 slides in contact with the inner wall of the mounting seat 32, providing axial support for the hydraulic cylinder 31. The concave plate 33 provides rotational support for the first clamping block 35 and the second clamping block 36 through a fixed shaft 34, ensuring that the two clamping blocks rotate synchronously around the same axis. The two sides of the inner wall of the concave plate 33 are fixedly connected by the fixed shaft 34, which serves as the first clamping block 35 and the second clamping block 36. The rotation axis of clamping block 36 ensures that the clamping block rotates around the axis without jamming, restricts the axial displacement of the clamping block, and prevents the clamping block from shifting left or right during rotation, thus ensuring the clamping position accuracy. The surface of the fixed shaft 34 is rotatably connected to the first clamping block 35 and the second clamping block 36 respectively. Through the constraint of the fixed shaft 34 and the hinge 38, the two clamping blocks approach the workpiece at the same speed and angle, avoiding the workpiece force shift caused by the unilateral lag of traditional clamps. The top of the mounting base 32 is equipped with a connecting block 37 corresponding to the positions of the first clamping block 35 and the second clamping block 36. The connecting block 37 connects the mounting base 32 and the hinge 38, providing a rotation fulcrum for the first clamping block 35 and the second clamping block 36. The two connecting blocks 37 are respectively connected by the hinge 38. 8 is hinged to the first clamping block 35 and the second clamping block 36. Both the first clamping block 35 and the second clamping block 36 are made of alloy steel. The surface of the alloy steel is coated with a ceramic coating, which improves wear resistance and does not scratch the surface of the workpiece. The hinge 38 realizes the flexible hinge connection between the connecting block 37 and the first clamping block 35 and the second clamping block 36, allowing the clamping blocks to rotate around the axis of the hinge 38 and coordinate with the rotation of the fixed shaft 34. The sides of the first clamping block 35 and the second clamping block 36 that are close to each other are concave and convex, respectively, so that the first clamping block 35 and the second clamping block 36 can respectively rotate into contact with the surface of the fixed shaft 34. The two first clamping blocks 35 and the two second clamping blocks 36 clamp and fix the two workpiece bodies 100.

[0026] In use, take the workpiece body 100, align the positioning groove 23 at the bottom of the workpiece with the positioning block 22 on the placement plate 21, and slowly insert it to limit the radial displacement of the workpiece in the left and right and front and back. Then place the inclined workpiece on the inclined plate 101 so that the positioning block 22 is inserted into the corresponding positioning groove 23. At this time, there is an inclination angle between the first clamping block 35 and the second clamping block 36 and the concave plate 33 respectively, so as to avoid the first clamping block 35 and the second clamping block 36 affecting the placement of the workpiece body 100.

[0027] On the hydraulic system control panel, activating hydraulic cylinder 31 causes all hydraulic cylinders 31 to extend synchronously, pushing the concave plate 33 upward. The concave plate 33, via the fixed shaft 34, drives the first clamping block 35 and the second clamping block 36 to rotate around the shaft. Simultaneously, the connecting block 37, via the hinge 38, restricts the rotation trajectory of the clamping blocks. The two clamping blocks approach the workpiece at the same speed, thus forming a... Figure 1 The state shown indicates that the workpiece body 100 is clamped and positioned. When the hydraulic system pressure gauge shows that the clamping force has reached the preset value, the hydraulic cylinder 31 automatically maintains the pressure and the clamping assembly is locked.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-precision positioning module for hydraulic clamps to prevent misalignment, characterized in that: The system includes a workbench (1), on which several workpiece bodies (100) are arranged. Two inclined plates (101) are installed on the right side of the top of the workbench (1). A positioning and placement component (2) is arranged on the top of the workbench (1) and at the position corresponding to the workpiece body (100). The positioning and placement component (2) is used to position and support the workpiece body (100). A drive clamping component (3) is arranged on the workbench (1). The drive clamping component (3) is used to clamp and fix the workpiece body (100).

2. The high-precision positioning module for preventing misalignment of hydraulic clamps according to claim 1, characterized in that: The positioning and placement assembly (2) includes a placement plate (21), which is installed on the top of the workbench (1). Two positioning blocks (22) are installed on the top of the placement plate (21) and the front and rear sides of the top of the inclined plate (101). A positioning groove (23) is provided on the bottom of the workpiece body (100) at the position corresponding to the positioning block (22).

3. The high-precision positioning module for preventing misalignment of hydraulic clamps according to claim 1, characterized in that: The drive clamping assembly (3) includes a hydraulic cylinder (31). The number of hydraulic cylinders (31) is several and they are respectively installed at the bottom of the workbench (1). Mounting seats (32) are installed at the top of the workbench (1) and the top of the inclined plate (101) and at the positions corresponding to the hydraulic cylinders (31).

4. The high-precision positioning module for preventing misalignment of hydraulic clamps according to claim 3, characterized in that: The output end of the hydraulic cylinder (31) passes through the mounting base (32) and extends to the outside of it to install a concave plate (33). The two sides of the inner wall of the concave plate (33) are fixedly connected by a fixed shaft (34). The surface of the fixed shaft (34) is rotatably connected to a first clamping block (35) and a second clamping block (36).

5. The high-precision positioning module for preventing misalignment of hydraulic clamps according to claim 4, characterized in that: A connecting block (37) is installed on the top of the mounting base (32) at the position corresponding to the first clamping block (35) and the second clamping block (36). The two connecting blocks (37) are respectively hinged to the first clamping block (35) and the second clamping block (36) via hinges (38).

6. The high-precision positioning module for preventing misalignment of hydraulic clamps according to claim 2, characterized in that: The two positioning blocks (22) on the placement plate (21) are cylindrical and flat, respectively, and the two positioning blocks (22) on the inclined plate (101) are flat.

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