Special clamp for milling plane of aviation joint part

Abstract

The utility model discloses a special fixture for plane milling of aviation joint parts, which comprises a four-jaw self-centering clamp, clamping jaws of the four-jaw self-centering clamp are symmetrically arranged in pairs, one pair of clamping jaws is assembled and connected with a fixed limiting piece, the other pair of clamping jaws is assembled and connected with an adjustable limiting piece, and the adjustable limiting piece is assembled and connected with a movable limiting piece. The utility model relates to the technical field of aviation part manufacturing, in particular to a special clamp designed according to the characteristics of joint series parts, which is based on a four-claw centering clamp, ensures the technical requirements of a part design drawing through the combined action of a fixed limiting piece and an adjustable limiting piece, can share one set of clamp for a plurality of part numbers, and is simple in structure and convenient to use. And moreover, the product can be quickly, simply and conveniently positioned, clamped and machined, and the required machining precision of aviation parts is fully guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of aviation parts manufacturing, and particularly relates to a special fixture for milling flat surfaces of aviation joint parts. Background Art

[0002] In the prior art, there is no special clamping fixture for milling flat surfaces of joint series parts in the aviation field. Especially when milling flat surfaces of aviation joint parts, the clamping steps are cumbersome, and it is necessary for experienced operators to detect to ensure the accuracy of parts machining. The clamping difficulty mainly lies in aspects such as automatic centering, ensuring the machining accuracy of parts, and ensuring convenient and fast clamping. In view of this, in-depth research on the above problems has led to the generation of this case. Content of the Utility Model

[0003] Aiming at the deficiencies of the prior art, the utility model provides a special fixture for milling flat surfaces of aviation joint parts, which solves the problems proposed in the background art.

[0004] To achieve the above purposes, the utility model is realized through the following technical solutions: A special fixture for milling flat surfaces of aviation joint parts, including a four-jaw self-centering chuck, wherein the jaws of the four-jaw self-centering chuck are arranged symmetrically in pairs, and a fixed limit member is assembled and connected to one pair of jaws, and an adjustable limit member is assembled and connected to the other pair of jaws.

[0005] The above-mentioned fixed limit member includes an assembly seat, a connection seat and a core rod. The assembly seat is fixedly assembled with the jaw, the connection seat is fixedly welded to the assembly seat, and the core rod is installed on the connection seat.

[0006] The above-mentioned adjustable limit member includes an assembly seat, a threaded seat and a screw. The assembly seat is fixedly assembled with the jaw, the threaded seat is welded to the assembly seat, and the screw is spirally inserted into the threaded seat.

[0007] A rectangular assembly groove is opened on the top surface of the above-mentioned jaw. A plug-in block is provided at the bottom of the assembly seat, and the plug-in block is inserted into the rectangular assembly groove. A threaded hole is opened on the side wall of the rectangular assembly groove, and a set screw is screwed into the threaded hole.

[0008] One end of the above-mentioned core rod is provided with a threaded joint and is in spiral fit with the connection seat. A blind hole is opened on the side wall of the core rod.

[0009] The utility model provides a special fixture for milling the plane of aviation joint parts. It has the following beneficial effects: This special fixture for milling the plane of aviation joint parts combines the experience of designing fixtures, takes into account the clamping and machining of joint series parts, and is a special fixture designed according to the characteristics of joint series parts. Based on a four-jaw centering chuck, through the combined action of a fixed limiting part and an adjustable limiting part, this fixture ensures the technical requirements of the part design drawing, and a set of fixtures can be shared by multiple part numbers. Moreover, it can quickly and simply position, clamp and machine the product, fully ensuring the machining accuracy requirements of aviation parts and guaranteeing the product quality, especially meeting the clamping needs during end face machining. Brief Description of the Drawings

[0010] Figure 1 It is a front view structural schematic diagram of the special fixture for milling the plane of the aviation joint parts described in the utility model.

[0011] Figure 2 For the utility model Figure 1 It is a sectional view structural schematic diagram at the A-A position in the utility model.

[0012] Figure 3 For the utility model Figure 1 It is a sectional view structural schematic diagram at the B-B position in the utility model.

[0013] Figure 4 It is a three-dimensional structural schematic diagram of the adjustable limiting part described in the utility model.

[0014] Figure 5 It is a three-dimensional structural schematic diagram of the fixed limiting part described in the utility model.

[0015] Figure 6 It is an axonometric structural schematic diagram of the jaw described in the utility model.

[0016] Figure 7 It is an axonometric structural schematic diagram of the mounting seat described in the utility model.

[0017] Figure 8 It is an axonometric structural schematic diagram of the mandrel described in the utility model.

[0018] In the figure: 1. Four-jaw self-centering chuck; 2. Jaw; 3. Assembly seat; 4. Connecting seat; 5. Mandrel; 6. Threaded seat; 7. Screw; 8. Rectangular assembly groove; 9. Insertion block; 10. Set screw; 11. Threaded joint; 12. Blind hole. Detailed Description of the Preferred Embodiment

[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0020] Embodiment: Referring to the attached drawings of the specification Figure 1-8 It can be seen that the present application specifically designs a special fixture for milling the plane of aviation joint parts, including a four-jaw self-centering chuck 1. The jaws 2 of the four-jaw self-centering chuck 1 are arranged symmetrically in pairs. A fixed limit member is assembled and connected to one pair of jaws 2, and an adjustable limit member is assembled and connected to the other pair of jaws 2. The fixed limit member includes an assembly seat 3, a connecting seat 4, and a core rod 5. The assembly seat 3 is fixedly assembled with the jaw 2, the connecting seat 4 is welded to the assembly seat 3, and the core rod 5 is installed on the connecting seat 4. The adjustable limit member includes an assembly seat 3, a threaded seat 6, and a screw 7. The assembly seat 3 is fixedly assembled with the jaw 2, the threaded seat 6 is welded to the assembly seat 3, and the screw 7 is helically inserted into the threaded seat 6. This special fixture for milling the plane of aviation joint parts, combined with the experience of designing fixtures, considering the clamping and machining of joint series parts, is a special fixture designed according to the characteristics of joint series parts. Based on the four-jaw centering chuck, through the combined action of the fixed limit member and the adjustable limit member, this fixture ensures the technical requirements of the part design drawing, and can share a set of fixtures for multiple part numbers, and can quickly and simply position, clamp and machine the product, fully ensuring the machining accuracy requirements of aviation parts and guaranteeing the product quality, especially meeting the clamping needs during end face machining. When in use, place the aviation joint part at the position of the four-jaw self-centering chuck 1, use the core rod 5 to cooperate with the jaw 2 to limit and fix it, and then use the screw 7 to assemble and tighten the part to complete the clamping and positioning of the part, and then cooperate to complete the subsequent plane milling operation.

[0021] In the specific implementation process, as a preferred setting, a rectangular assembly groove 8 is opened on the top surface of the jaw 2, and a plug-in block 9 is provided at the bottom of the assembly seat 3. The plug-in block 9 is inserted into the rectangular assembly groove 8. A threaded hole is opened on the side wall of the rectangular assembly groove 8, and a set screw 10 is screwed into the threaded hole, which is convenient for replacing or adjusting the assembly seat 3. That is, according to the actual use needs of the processed parts, the position and quantity of the core rod 5 or the screw 7 can be adjusted to better cooperate to realize the clamping and fixing of the parts. The structure is simple and the operation is convenient.

[0022] In the specific implementation process, as a preferred setting, one end of the core rod 5 is provided with a threaded joint 11 and is in screw fit with the connecting seat 4. A blind hole 12 is opened on the side wall of the core rod 5, which can realize the replacement of the core rod 5 without disassembling the assembly seat 3.

[0023] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A special fixture for plane milling of aviation joint parts, including a four-jaw self-centering clamp, characterized in that: The clamping jaws of the four-jaw self-centering clamp are symmetrically arranged in pairs, one pair of the clamping jaws is assembled and connected with a fixed limiting piece, and the other pair of the clamping jaws is assembled and connected with an adjustable limiting piece.

2. The special fixture for plane milling of aviation joint parts according to claim 1 is characterized in that: The fixed position-limiting member comprises an assembly seat, a connecting seat and a core rod. The assembly seat is assembled and fixed with the claws, the connecting seat is welded and fixed with the assembly seat, and the core rod is installed on the connecting seat.

3. The special fixture for plane milling of aviation joint parts according to claim 1 is characterized in that: The adjustable position-limiting member comprises an assembly seat, a threaded seat and a screw. The assembly seat is assembled and fixed with the claw, the threaded seat is welded on the assembly seat, and the screw is spirally inserted in the threaded seat.

4. A special fixture for plane milling of aviation joint parts according to any one of claims 2 or 3, characterized in that: A rectangular assembly groove is provided on the top surface of the clamping claw, a plug-in block is provided on the bottom of the assembly seat, the plug-in block is inserted into the rectangular assembly groove, a threaded hole is provided on the side wall of the rectangular assembly groove, and a fixing nail is screwed into the threaded hole.

5. The special fixture for plane milling of aviation joint parts according to claim 2 is characterized in that: A threaded joint is provided at one end of the core rod and is screw-matched with the connecting seat, and a blind hole is opened on the side wall of the core rod.

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