Multi-station machining tooling

Abstract

This utility model provides a multi-station machining fixture, including a square box. The square box includes a main body and four base plates installed around the main body. Clamping and fixing kits are provided on the base plates. The key feature is that each base plate is detachably mounted around the main body. Each base plate is equipped with at least one clamping and fixing kit, and each kit forms a workstation. Each clamping and fixing kit includes a square positioning plate, a pressure plate assembly I, a pressure plate assembly II, a cylindrical positioning pin, a circular positioning block, and a diamond-shaped positioning pin. The square positioning plate and pressure plate assembly I are arranged side-by-side on the upper part of the base plate. Below the pressure plate assembly I, from top to bottom, are arranged the diamond-shaped positioning pin, the circular positioning block, the cylindrical positioning pin, and the pressure plate assembly II. This fixture has a simple structure, provides accurate and convenient workpiece clamping, enables rapid fixture changeover, significantly improves machining efficiency, ensures machining accuracy, and saves machining costs.

Description

Technical Field

[0001] This utility model belongs to the field of machining tooling, and in particular, it is a multi-station machining tooling. Background Technology

[0002] In traditional machining processes, workpieces are typically clamped and positioned using single-station tooling. This method has the following problems:

[0003] 1. Low efficiency: Single-station clamping can only process one workpiece at a time. Compared with multi-station clamping, the machine tool needs to frequently change the processing tools and stop to clamp the workpiece, resulting in low overall production efficiency.

[0004] 2. Difficulty in ensuring accuracy: Single-station tooling needs to be readjusted every time it is clamped, which involves a lot of human factors and can easily lead to poor consistency in processing quality.

[0005] 3. Low level of automation: Single-station tooling requires frequent manual intervention, resulting in a low level of automation.

[0006] 4. High processing costs: To meet production needs, single-station clamping requires a large number of tooling fixtures, which occupies more machine tools and production space than multi-station clamping, resulting in higher processing costs.

[0007] To address these issues, multi-station tooling designs have emerged in the mechanical and electrical component manufacturing industries. Multi-station tooling typically has the following characteristics:

[0008] 1. High efficiency: Production efficiency is greatly improved by operating multiple workstations simultaneously or processing continuously.

[0009] 2. High degree of automation: Some multi-station tooling is equipped with an automated control system, which can realize automatic feeding, positioning, processing and part removal.

[0010] 3. High adaptability: Some tooling can be adjusted according to different workpiece specifications.

[0011] 4. Good stability: The high-precision positioning and clamping method ensures the stability and accuracy of the processing.

[0012] However, most of these multi-station toolings have drawbacks such as complex structure, inconvenient workpiece clamping, inability to achieve rapid changeover, and high processing costs, which limit their widespread application.

[0013] How to design a multi-station machining fixture that is simple in structure, allows for accurate and convenient workpiece clamping, enables rapid fixture changeover, and significantly improves machining efficiency, ensures machining accuracy, and saves machining costs is a technical problem that urgently needs to be solved in this field. Utility Model Content

[0014] To address the aforementioned problems in the existing technology, this utility model provides a multi-station machining fixture with a simple structure, accurate and convenient workpiece clamping, rapid fixture changeover, and significantly improved machining efficiency, guaranteed machining accuracy, and reduced machining costs.

[0015] The objective of this utility model is achieved through the following technical solution:

[0016] A multi-station machining fixture includes a square box, which comprises a box body and four base plates mounted around the box body. Clamping and fixing kits are provided on the base plates. The fixture is characterized in that each base plate is detachably mounted around the box body, and each base plate is equipped with at least one clamping and fixing kit. Each clamping and fixing kit forms a station on the base plate. The clamping and fixing kit includes a square positioning plate, a pressure plate assembly I, a pressure plate assembly II, a cylindrical positioning pin, a circular positioning block, and a diamond-shaped positioning pin. The square positioning plate and pressure plate assembly I are arranged side-by-side on the upper part of the base plate. Below the pressure plate assembly I, from top to bottom, are arranged a diamond-shaped positioning pin, a circular positioning block, a cylindrical positioning pin, and a pressure plate assembly II.

[0017] Improvements to the above technical solution: The workpiece clamped on the workstation is a front support foot for a carding machine, the pressure plate assembly II has two sets, and the clamping and fixing kit also includes at least one coarse guide post, which is located at the lower part of the base plate.

[0018] A further improvement to the above technical solution: the line connecting the positions of the pressure plate assembly I and the two sets of pressure plate assemblies II forms a triangle.

[0019] Further improvements to the above technical solution: There are 3 circular positioning blocks, two of which are symmetrically arranged above the cylindrical positioning pin, and one of which is arranged directly below the cylindrical positioning pin. The line connecting the positions of the three circular positioning blocks forms an inverted triangle.

[0020] Further improvements to the above technical solution: The pressure plate assembly I and pressure plate assembly II respectively include a flanged hexagonal nut, a pressure plate, a copper pressure block, a clamping screw, and a supporting screw. A pressure plate is provided at one end of the flange of the flanged hexagonal nut, and a copper pressure block is provided on the bottom surface of the pressure plate. A screw hole is opened in the middle of the flange of the flanged hexagonal nut, and the clamping screw is inserted into the screw hole. The upper end of the clamping screw is fitted with the nut of the flanged hexagonal nut, and the lower end of the clamping screw is fitted with a hexagonal nut. A supporting screw is provided on the bottom surface of the flange of the flanged hexagonal nut, and a hexagonal nut is fitted on the supporting screw.

[0021] Further improvements to the above technical solution: The box body is a square frame structure, and the bottom plate is a square metal plate.

[0022] Further improvements to the above technical solution: A square box base is provided at the bottom of the square box body, and the square box base is used to connect to the machine tool worktable in a detachable manner. Lifting eye screws are respectively provided on the top of the square box body and the square box base.

[0023] Compared with the prior art, this utility model has the following advantages and positive effects:

[0024] 1. Accurate and efficient clamping and positioning: The tooling of this utility model is designed with "one side and two pins" and "installation guide device", which can realize the quick and accurate clamping of workpieces.

[0025] 2. The tooling has an anti-misfit function: The tooling of this utility model is designed with an "error correction device" to prevent errors when clamping similar symmetrical parts.

[0026] 3. Enables rapid changeover: The tooling of this utility model can achieve "rapid changeover" when processing other types of parts, which is in line with the lean production concept.

[0027] 4. Its simple structure can save processing costs and significantly improve processing efficiency and ensure processing accuracy. Attached Figure Description

[0028] Figure 1 This is a front view of a multi-station machining fixture on a machine tool table after the workpiece is clamped.

[0029] Figure 2 This is a left view of the multi-station machining fixture of this utility model after the workpiece is clamped on the machine tool table;

[0030] Figure 3 This is a front view of the pressure plate assembly I in a multi-station processing fixture according to this utility model.

[0031] In the diagram: 1. Base plate; 2. Square positioning plate; 3. Pressure plate assembly I; 3.1. Hexagonal nut with flange; 3.2. Pressure plate; 3.3. Copper pressure block; 3.4. Clamping screw; 3.5. Hexagonal nut; 3.6. Support screw; 4. Square box body; 5. Workpiece (front support foot for carding machine); 6. Coarse guide column; 7. Pressure plate assembly II; 8. Cylindrical positioning pin; 9. Circular positioning block; 10. Rhomboid positioning pin; 11. Eye bolt; 12. Square box base; 13. Machine tool worktable. Detailed Implementation

[0032] See Figures 1-3This utility model discloses an embodiment of a multi-station machining fixture, comprising a square box, the square box comprising a square box body 4 and four base plates 1 installed around the square box body 4, with clamping and fixing kits provided on the base plates 1. The four base plates 1 are detachably hung around the square box body 4, and each base plate 1 is provided with at least one set of clamping and fixing kits, each set of clamping and fixing kits forming a workstation on the base plate 1. The clamping and fixing kits include a square positioning plate 2, a pressure plate assembly I 3, a pressure plate assembly II 7, a cylindrical positioning pin 8, a circular positioning block 9, and a diamond-shaped positioning pin 10. The square positioning plate 2 and the pressure plate assembly I 3 are arranged side by side on the upper part of the base plate 1, and the diamond-shaped positioning pin 10, the circular positioning block 9, the cylindrical positioning pin 8, and the pressure plate assembly II 7 are arranged sequentially from top to bottom below the pressure plate assembly I 3.

[0033] Furthermore, the workpiece 5 clamped at the above-mentioned workstation is a front support foot for a carding machine. There are two sets of pressure plate assembly II 7. The clamping and fixing kit also includes at least one coarse guide post 6. The coarse guide post 6 is set at the lower part of the base plate 1. In this embodiment, two coarse guide posts 6 are used.

[0034] Furthermore, the line connecting the locations of the aforementioned pressure plate assembly I 3 and the two sets of pressure plate assemblies II 7 forms a triangle.

[0035] Furthermore, there are three circular positioning blocks 9. Two circular positioning blocks 9 are symmetrically arranged above the cylindrical positioning pin 8, and one circular positioning block 9 is arranged directly below the cylindrical positioning pin 8. The line connecting the positions of the three circular positioning blocks 9 forms an inverted triangle.

[0036] Specifically: such as Figure 3 As shown, the aforementioned pressure plate assembly I 3 includes: a flanged hexagonal nut 3.1, a pressure plate 3.2, a copper pressure block 3.3, a clamping screw 3.4, a hexagonal nut 3.5, and a support screw 3.6. The flanged hexagonal nut 3.1 has a pressure plate 3.2 at one end of its flange, and a copper pressure block 3.3 on its bottom surface. A screw hole is formed in the middle of the flange of the flanged hexagonal nut 3.1, and a clamping screw 3.4 is inserted into the screw hole. The upper end of the clamping screw 3.4 is fitted with the nut from the flanged hexagonal nut 3.1, and the lower end of the clamping screw 3.4 is fitted with a hexagonal nut 3.5. A support screw 3.6 is provided on the bottom surface of the flange of the flanged hexagonal nut 3.1, and a hexagonal nut 3.5 is fitted on the support screw 3.6.

[0037] The specific structure of the aforementioned pressure plate assembly II 7 is basically the same as that of pressure plate assembly I 3, except for the difference in size, so it will not be described in detail again.

[0038] The aforementioned box body 4 is a square frame structure, and the aforementioned base plate 1 is a square metal plate.

[0039] The square box body 4 is provided with a square box base 12 at the bottom. The square box base 12 is used to connect to the machine tool worktable 13 in a detachable manner (usually by internal angle bolts). In addition, eye bolts 11 are provided on the top of the square box body 4 and the square box base 12 respectively.

[0040] The tooling of this utility model is a four-station tooling, which can simultaneously complete the positioning, clamping and machining of four parts.

[0041] In use, this utility model discloses a multi-station machining fixture. The workpiece 5 (front support foot for a carding machine) is roughly positioned by two coarse guide pins 6. Precise positioning is achieved using cylindrical positioning pins 8 and diamond-shaped positioning pins 10, ultimately positioning the workpiece onto a positioning surface composed of a square positioning plate 2 and a circular positioning block 9, thus achieving one-sided, two-pin positioning of the workpiece. Finally, the workpiece 5 is pressed down by pressure plate assembly I 3 and two sets of pressure plate assemblies II 7.

[0042] The base plate 1 is mounted on the square box body 4. By replacing the base plate 1, the tooling can be quickly changed without remaking the square box body 4, thus saving a significant amount of production costs. The coarse guide post 6 also has the function of preventing workpieces with similar symmetrical structures from being misaligned, further ensuring the accuracy and stability of the final machining quality of the workpiece.

[0043] Of course, the above description is not intended to limit the present utility model, nor is the present utility model limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. A multi-station machining tool comprising a square box, the square box comprising a square box body and four bottom plates installed around the square box body, a clamping and fixing assembly is arranged on the bottom plates, characterized in that, Each of the base plates is detachably mounted around the square box body. Each base plate is equipped with at least one set of clamping and fixing kits. Each set of clamping and fixing kits forms a work station on the base plate. The clamping and fixing kit includes a square positioning plate, pressure plate assembly I, pressure plate assembly II, cylindrical positioning pin, circular positioning block, and diamond positioning pin. The square positioning plate and pressure plate assembly I are arranged side by side on the upper part of the base plate. Below the pressure plate assembly I, from top to bottom, diamond positioning pin, circular positioning block, cylindrical positioning pin, and pressure plate assembly II are arranged in sequence.

2. The multi-station machining tooling fixture of claim 1, wherein, The workpiece clamped at the workstation is a front support foot for a carding machine. There are two sets of the pressure plate assembly II. The clamping and fixing kit also includes at least one coarse guide post, which is located at the bottom of the base plate.

3. The multi-station machining fixture according to claim 2, characterized in that, The line connecting the locations of the pressure plate assembly I and the two sets of pressure plate assemblies II forms a triangle.

4. The multi-station machining fixture according to any one of claims 1-3, characterized in that, There are three circular positioning blocks. Two of the circular positioning blocks are symmetrically arranged above the cylindrical positioning pin, and one of the circular positioning blocks is arranged directly below the cylindrical positioning pin. The line connecting the positions of the three circular positioning blocks forms an inverted triangle.

5. The multi-station machining fixture according to any one of claims 1-3, characterized in that, The pressure plate assembly I and pressure plate assembly II respectively include a flanged hexagonal nut, a pressure plate, a copper pressure block, a clamping screw, and a supporting screw. The flanged hexagonal nut has a pressure plate at one end of its flange, and a copper pressure block is provided on the bottom surface of the pressure plate. A screw hole is opened in the middle of the flange of the flanged hexagonal nut, and the clamping screw is inserted into the screw hole. The upper end of the clamping screw is fitted with the nut of the flanged hexagonal nut, and the lower end of the clamping screw is fitted with a hexagonal nut. A supporting screw is provided on the bottom surface of the flange of the flanged hexagonal nut, and a hexagonal nut is fitted on the supporting screw.

6. The multi-station machining fixture according to claim 4, characterized in that, The pressure plate assembly I and pressure plate assembly II respectively include a flanged hexagonal nut, a pressure plate, a copper pressure block, a clamping screw, and a supporting screw. The flanged hexagonal nut has a pressure plate at one end of its flange, and a copper pressure block is provided on the bottom surface of the pressure plate. A screw hole is opened in the middle of the flange of the flanged hexagonal nut, and the clamping screw is inserted into the screw hole. The upper end of the clamping screw is fitted with the nut of the flanged hexagonal nut, and the lower end of the clamping screw is fitted with a hexagonal nut. A supporting screw is provided on the bottom surface of the flange of the flanged hexagonal nut, and a hexagonal nut is fitted on the supporting screw.

7. The multi-station machining fixture according to any one of claims 1-3, characterized in that, The box body is a square frame structure, and the base plate is a square metal plate.

8. The multi-station machining fixture according to claim 6, characterized in that, The box body is a square frame structure, and the base plate is a square metal plate.

9. The multi-station machining fixture according to any one of claims 1-3, characterized in that, The bottom of the square box body is provided with a square box base, which is used to detachably connect to the machine tool worktable. Lifting eye screws are respectively provided on the top of the square box body and the square box base.

10. The multi-station machining fixture according to claim 8, characterized in that, The bottom of the square box body is provided with a square box base, which is used to detachably connect to the machine tool worktable. Lifting eye screws are respectively provided on the top of the square box body and the square box base.

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