Frame type milling tool

Abstract

The application belongs to the technical field of part machining, and discloses a frame type milling tool, which comprises a rectangular frame, a fixing assembly and a positioning structure, a plurality of fixing assemblies are arranged on the inner wall of the rectangular frame at intervals in the circumferential direction, and the plurality of fixing assemblies are used for clamping and fixing a workpiece; the upper and lower sides of the rectangular frame are both provided with the positioning structure, and the positioning structure is configured to cooperate with a zero point positioning system on a machine tool. After the plurality of fixing assemblies clamp and fix the workpiece, the whole tool is moved to the machine tool, and the positioning structure is cooperated with the zero point positioning system on the machine tool, so that the first surface of the workpiece can be machined. After the first surface is machined, the whole tool and the workpiece are turned over, so that the second surface of the workpiece faces upward, and the second surface of the workpiece can be machined after positioning. The tool has the advantages of simple structure, light weight, and convenience in turning over, and can effectively position and fix the workpiece, thereby improving machining precision.

Description

Technical Field

[0001] This invention relates to the field of parts processing technology, and in particular to a frame-type milling fixture. Background Technology

[0002] The CNC machining of integral structural components first requires positioning the blank on a machine tool, or using a universal base plate for clamping and positioning on an intelligent production line. When machining the second side and flipping it over, offline flipping positioning and clamping are required, which increases the cost of manual flipping and the accumulation of secondary errors in flipping positioning.

[0003] Moreover, current intelligent production lines cannot manufacture medium-sized parts because the positioning base plate is too heavy, and the blank of medium-sized parts is also too heavy, making it impossible for robots to grasp them. At the same time, when medium-sized parts are flipped over for a second side processing, a vacuum platform is often required for vacuum adsorption to assist in clamping. However, current technology cannot achieve stable vacuum adsorption, making it difficult to ensure the stability of parts during processing and reducing processing accuracy.

[0004] Therefore, there is an urgent need for a frame-type milling fixture to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a frame-type milling fixture that is simple in structure, lightweight, easy to flip, and can ensure that parts are firmly fixed, thereby improving machining accuracy.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A frame-type milling fixture is provided, comprising:

[0008] Rectangular frame;

[0009] The rectangular frame has multiple fixing components spaced apart along its inner wall in the circumferential direction, and each of the multiple fixing components is used to clamp and fix the workpiece.

[0010] The positioning structure is provided on both the upper and lower sides of the rectangular frame, and the positioning structure is configured to cooperate with the zero-point positioning system on the machine tool.

[0011] As a preferred embodiment of the frame-type milling fixture provided by the present invention, the fixing component includes a telescopic mechanism and a clamping mechanism connected together. The telescopic mechanism is connected to the inner wall of the rectangular frame, and the clamping mechanism is used to clamp and fix the workpiece.

[0012] As a preferred embodiment of the frame-type milling fixture provided by the present invention, the telescopic mechanism includes multiple telescopic components, each of which includes a sleeve and a telescopic rod. A ball head is provided on the rectangular frame, and the sleeve is hinged to the ball head. One end of the telescopic rod is slidably disposed in the sleeve, and the other end extends out of the sleeve and is hinged to the clamping mechanism.

[0013] As a preferred embodiment of the frame-type milling fixture provided by the present invention, the rectangular frame is provided with a mounting support, each of the telescopic mechanisms includes three telescopic members, two of the three telescopic members are ball-jointed to the inner wall of the rectangular frame, one telescopic member is ball-jointed to the mounting support, and the three telescopic members form a triangular structure.

[0014] As a preferred embodiment of the frame-type milling fixture provided by the present invention, the clamping mechanism includes a U-shaped clamping block and a locking bolt. One side of the U-shaped clamping block is connected to the telescopic mechanism, and the other side is provided with a U-shaped groove. The workpiece is placed in the U-shaped groove, and the locking bolt passes through the groove wall of the U-shaped groove and is pressed against the workpiece.

[0015] As a preferred embodiment of the frame-type milling fixture provided by the present invention, it further includes fixture supports, wherein a plurality of fixture supports are provided on the rectangular frame along the circumferential direction, and the fixture supports are provided along the thickness direction of the rectangular frame.

[0016] As a preferred embodiment of the frame-type milling fixture provided by the present invention, it further includes a flexible support mechanism, which is placed below the workpiece. The flexible support mechanism includes a support plate, on which a plurality of flexible support columns are provided. The flexible support columns are used to support the machined surface of the workpiece.

[0017] As a preferred embodiment of the frame-type milling fixture provided by the present invention, the support plate is further provided with a plurality of vacuum adsorption components, which are used to adsorb and fix the machined surface of the workpiece.

[0018] As a preferred embodiment of the frame-type milling fixture provided by the present invention, the rectangular frame is provided with multiple lifting rings on both sides opposite to each other along the thickness direction, and a thickened plate is provided at the connection between each lifting ring and the rectangular frame.

[0019] As a preferred embodiment of the frame-type milling fixture provided by the present invention, the rectangular frame is a hollow structure.

[0020] The beneficial effects of this invention are:

[0021] This invention provides a frame-type milling fixture for positioning and fixing a workpiece. The workpiece needs to have two opposite sides machined. Before machining, the workpiece is placed within a rectangular frame and clamped and fixed by multiple fixing components to ensure its secure fixation. A robotic arm can then move the entire fixture and workpiece onto a machine tool, aligning the positioning structure with the machine tool's zero-point positioning system to position the workpiece. The machine tool can then machine the first side of the workpiece. After the first side is machined, the robotic arm flips the entire fixture and workpiece so that the second side of the workpiece faces upwards. Because positioning structures are provided on both the top and bottom sides of the rectangular frame, the flipped rectangular frame can still coordinate with the machine tool's zero-point positioning system to position the workpiece. After positioning, the second side of the workpiece can be machined. This fixture has a simple structure. Compared to the single-piece positioning plate in existing technologies, the rectangular frame is lighter and easier to flip, and it effectively positions and fixes the workpiece, improving machining accuracy. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the frame-type milling fixture provided in a specific embodiment of the present invention;

[0023] Figure 2 This is a first view (machining first surface) of the frame-type milling fixture fixing the workpiece provided in a specific embodiment of the present invention.

[0024] Figure 3 This is a second view (processing the second surface) of the frame-type milling fixture fixing the workpiece according to a specific embodiment of the present invention;

[0025] Figure 4 This is a third view (processing the second side) of the frame-type milling fixture used in a specific embodiment of the present invention to fix the workpiece.

[0026] In the picture:

[0027] 1. Rectangular frame; 2. Fixing components; 3. Positioning structure; 4. Mounting support; 5. Tooling support; 6. Flexible support mechanism; 7. Lifting ring; 8. Thickened plate;

[0028] 21. Telescopic mechanism; 22. Clamping mechanism; 23. Ball head;

[0029] 211. Expansion joint; 2111. Sleeve; 2112. Expansion rod;

[0030] 61. Support plate; 62. Flexible support column;

[0031] 100. Workpiece. Detailed Implementation

[0032] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0033] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0034] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0035] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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 the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0036] like Figure 1 and Figure 2 As shown, this embodiment provides a frame-type milling fixture for positioning and fixing the workpiece 100. The frame-type milling fixture includes a rectangular frame 1, a fixing component 2, and a positioning structure 3.

[0037] See Figure 1 and Figure 2 The inner wall of the rectangular frame 1 is provided with multiple fixing components 2 at intervals along the circumference. All fixing components 2 are used to clamp and fix the workpiece 100. The upper and lower sides of the rectangular frame 1 are provided with positioning structures 3, which are configured to cooperate with the zero-point positioning system on the machine tool.

[0038] The workpiece 100 needs to have two opposite sides machined. Before machining, the workpiece 100 is placed inside a rectangular frame 1 and clamped and fixed by multiple fixing components 2 to ensure the workpiece 100 is firmly fixed. Then, a robotic arm can be used to move the entire fixture and workpiece 100 onto the machine tool, and the positioning structure 3 cooperates with the zero-point positioning system on the machine tool to complete the positioning of the workpiece 100. After that, the machine tool can machine the first side of the workpiece 100. After the first side is machined, the robotic arm flips the entire fixture and workpiece 100 so that the second side of the workpiece 100 faces upward. Since the rectangular frame 1 has positioning structures 3 on both the top and bottom sides, the flipped rectangular frame 1 can still cooperate with the zero-point positioning system on the machine tool through the positioning structure 3 to complete the positioning of the workpiece 100. After positioning, the second side of the workpiece 100 can be machined. The fixture has a simple structure. Compared with the single positioning plate in the prior art, the rectangular frame 1 is lighter and easier to flip. The fixture can effectively position and fix the workpiece 100, improving the machining accuracy.

[0039] In this embodiment, the rectangular frame 1 has two fixing components 2 on each of its two long sides and one fixing component 2 on each of its two short sides, for a total of six fixing components 2, to ensure the stability of the clamping of the workpiece 100. In other embodiments, the number and distribution of fixing components 2 can be set according to requirements.

[0040] In this embodiment, after machining the first surface, the entire fixture is rotated 180 degrees. Figure 3 and Figure 4 For the flipped tooling and workpiece 100, a positioning structure 3 is set on the upper and lower surfaces of the tooling, and the two positioning structures 3 are located on the two long sides of the rectangular frame 1 respectively. When the tooling is flipped 180 degrees, the positioning structure 3 on the back is exactly located in the position of the positioning structure 3 on the front, so it can be matched with the zero-point positioning system of the machine tool.

[0041] Optionally, the positioning structure 3 is a positioning column, and the machine tool zero-point positioning system includes a positioning groove. The positioning column and the positioning groove are inserted and matched to achieve positioning.

[0042] Optionally, see Figure 1 The fixing component 2 includes a telescopic mechanism 21 and a clamping mechanism 22 connected together. The telescopic mechanism 21 is connected to the inner wall of the rectangular frame 1, and the clamping mechanism 22 is used to clamp and fix the workpiece 100. The length of the telescopic mechanism 21 is adjustable so that multiple clamping mechanisms 22 can clamp and fix workpieces 100 of various lengths and widths.

[0043] See Figure 1 and Figure 2The telescopic mechanism 21 includes multiple telescopic components 211, each of which includes a sleeve 2111 and a telescopic rod 2112. A ball head 23 is provided on the rectangular frame 1, and the sleeve 2111 is hinged to the ball head 23. One end of the telescopic rod 2112 is slidably disposed inside the sleeve 2111, and the other end extends out of the sleeve 2111 and is hinged to the clamping mechanism 22. When adjusting the length of the telescopic mechanism 21, the telescopic rod 2112 extends out of or retracts from the sleeve 2111. The sleeve 2111 rotates adaptively relative to the rectangular frame 1, and the telescopic rod 2112 rotates adaptively relative to the clamping mechanism 22, so that the length of the telescopic mechanism 21 can be smoothly adjusted.

[0044] See Figure 1 and Figure 2 In this embodiment, each telescopic mechanism 21 includes three telescopic members 211, and the three telescopic members 211 form a triangular structure to ensure the stability of the entire telescopic mechanism 21. Further, a mounting support 4 is provided on the rectangular frame 1, and the mounting support 4 is arranged along the thickness direction of the rectangular frame 1. Two of the three telescopic members 211 are ball-jointed to the inner wall of the rectangular frame 1, and one telescopic member 211 is ball-jointed to the mounting support 4, so that the three telescopic members 211 form a triangular structure. The triangular structure of the mounting support 4 provides a mounting base for the telescopic mechanism 21.

[0045] Specifically, a ball head 23 is provided on the mounting support 4, and the sleeve 2111 of the corresponding telescopic member 211 is hinged to the ball head 23.

[0046] See Figure 1 In this embodiment, the clamping mechanism 22 includes a U-shaped clamping block and a locking bolt. One side of the U-shaped clamping block is connected to the telescopic mechanism 21, and the other side is provided with a U-shaped groove. The workpiece 100 is placed in the U-shaped groove, and the locking bolt passes through the groove wall of the U-shaped groove and is tightened against the workpiece 100. Specifically, one side of the U-shaped clamping block is hinged to the telescopic rod 2112, and the other side holds the workpiece 100 through the U-shaped groove. After the workpiece 100 is inserted into the U-shaped grooves of the multiple clamping mechanisms 22, the locking bolt is tightened to secure the workpiece 100.

[0047] See Figure 1 and Figure 2 Multiple tooling supports 5 are provided on the rectangular frame 1 along the circumferential direction, and the tooling supports 5 are arranged along the thickness direction of the rectangular frame 1. When machining the first side of the workpiece 100, the tooling supports 5 are located on the front side of the rectangular frame 1. When machining the second side of the workpiece 100, the first side is flipped over and facing down, and the tooling supports 5 are located on the back side of the rectangular frame 1 to support the rectangular frame 1.

[0048] Furthermore, the tooling also includes a flexible support mechanism 6. For example... Figure 3 and Figure 4As shown, when machining the second surface after the tooling is flipped, the flexible support mechanism 6 is placed below the workpiece 100. The flexible support mechanism 6 includes a support plate 61, on which multiple flexible support columns 62 are provided. The flexible support columns 62 are used to support the machined surface (i.e., the machined first surface) of the workpiece 100 to prevent damage to the machined surface. In this embodiment, the multiple flexible support columns 62 are distributed in a rectangular array to support the rectangular workpiece 100.

[0049] Furthermore, the support plate 61 is also provided with a number of vacuum adsorption components, which are used to adsorb and fix the processed surface (i.e. the first processed surface) of the workpiece 100, further ensuring the firmness of the workpiece 100.

[0050] See Figure 1 and Figure 2 Multiple lifting rings 7 are provided on both sides of the rectangular frame 1 along the thickness direction, and a thickening plate 8 is provided at the connection between each lifting ring 7 and the rectangular frame 1. The lifting rings 7 facilitate the lifting of the entire fixture by mechanical equipment, and the thickening plate 8 can improve the strength of the corresponding position of the rectangular frame 1. On the one hand, it is easier to install the lifting rings 7, and on the other hand, it can also improve the structural strength at the lifting point and prevent the rectangular frame 1 from deforming.

[0051] In this embodiment, the rectangular frame 1 is a hollow structure, which further reduces the weight of the entire tooling and reduces the difficulty of flipping.

[0052] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A frame-type milling fixture, characterized in that, include: Rectangular frame (1); Fixing component (2): Multiple fixing components (2) are arranged circumferentially on the inner wall of the rectangular frame (1), and the multiple fixing components (2) are used to clamp and fix the workpiece (100). Positioning structure (3), the upper and lower sides of the rectangular frame (1) are provided with the positioning structure (3), the positioning structure (3) is configured to cooperate with the zero-point positioning system on the machine tool; The fixing component (2) includes a telescopic mechanism (21) and a clamping mechanism (22) connected together. The telescopic mechanism (21) is connected to the inner wall of the rectangular frame (1), and the clamping mechanism (22) is used to clamp and fix the workpiece (100). The telescopic mechanism (21) includes multiple telescopic components (211), each of which includes a sleeve (2111) and a telescopic rod (2112). A ball head (23) is provided on the rectangular frame (1). The sleeve (2111) is hinged to the ball head (23). One end of the telescopic rod (2112) is slidably disposed in the sleeve (2111), and the other end extends out of the sleeve (2111) and is hinged to the clamping mechanism (22). The rectangular frame (1) is provided with a mounting support (4), and each telescopic mechanism (21) includes three telescopic members (211). Two of the three telescopic members (211) are spherically hinged to the inner wall of the rectangular frame (1), and one telescopic member (211) is spherically hinged to the mounting support (4). The three telescopic members (211) form a triangular structure.

2. The frame-type milling fixture according to claim 1, characterized in that, The clamping mechanism (22) includes a U-shaped clamping block and a locking bolt. One side of the U-shaped clamping block is connected to the telescopic mechanism (21), and the other side is provided with a U-shaped groove. The workpiece (100) is placed in the U-shaped groove, and the locking bolt passes through the groove wall of the U-shaped groove and is pressed against the workpiece (100).

3. The frame-type milling fixture according to claim 1, characterized in that, It also includes tooling supports (5), and multiple tooling supports (5) are provided on the rectangular frame (1) along the circumferential direction, and the tooling supports (5) are provided along the thickness direction of the rectangular frame (1).

4. The frame-type milling fixture according to claim 1, characterized in that, It also includes a flexible support mechanism (6), which is placed below the workpiece (100). The flexible support mechanism (6) includes a support plate (61) and a plurality of flexible support columns (62) are provided on the support plate (61). The flexible support columns (62) are used to support the processed surface of the workpiece (100).

5. The frame-type milling fixture according to claim 4, characterized in that, The support plate (61) is also provided with a plurality of vacuum adsorption components, which are used to adsorb and fix the processed surface of the workpiece (100).

6. The frame-type milling fixture according to any one of claims 1-5, characterized in that, The rectangular frame (1) has multiple lifting rings (7) on both sides opposite to each other along the thickness direction, and a thickened plate (8) is provided at the connection between each lifting ring (7) and the rectangular frame (1).

7. The frame-type milling fixture according to any one of claims 1-5, characterized in that, The rectangular frame (1) is a hollow structure.

Images