Totally-coated clamp for special-shaped part

Abstract

The utility model relates to a full cladding type clamp for special-shaped parts, which comprises a first clamping part, a second clamping part and a lengthened three-jaw, the first clamping part and the second clamping part have the same axis and radius and can be combined into a cylinder appearance structure, and the lengthened three-jaw is clamped outside a cylinder. The first clamping part and the second clamping part are provided with a first fixing cavity and a second fixing cavity which correspond to each other, the first fixing cavity and the second fixing cavity are matched with the clamping outline of the special-shaped part, and at least two matched positioning parts are arranged between the first clamping part and the second clamping part. The special-shaped part can be completely wrapped in the cavity, the special-shaped part can be stably supported in the machining process, the rotating speed and cutting feeding of a machine tool reach the reasonable level, the production efficiency is improved, the special-shaped part is evenly stressed, clamping deformation caused by workpiece clamping is reduced, the machining accuracy is guaranteed, and the product percent of pass is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of clamps, in particular to a full-covering clamp for special-shaped parts. Background Art

[0002] At present, some structures of castings in precision casting need to be further processed on a lathe. When special-shaped precision casting parts such as tees are processed on a lathe, a two-claw clamp or a bent plate clamp is usually made to clamp and fix them. The special-shaped parts fixed by these two clamps are unevenly stressed and easily deformed, which in turn affects the processing accuracy of the finished product. In addition, due to the poor stability of clamping and fixing with two-claw clamps or bent plate clamps, the rotation speed and cutting feed speed of the machine tool cannot reach a reasonable level during processing. At the same time, due to the large centrifugal force of the lathe, it can only be processed at a low speed and low feed, which greatly reduces the processing efficiency of the product. The processing time of a single piece is long and it is easy to cause large dimensional errors, and even produce defective products, resulting in a double waste of labor time and production materials. Therefore, a full-enclosed clamp that can stably clamp special-shaped parts and enable the lathe to perform cutting processing at a reasonable speed is required. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a fully covered clamp for special-shaped parts.

[0004] In order to solve the above problems, the technical solution adopted by the utility model is:

[0005] A fully enclosed clamp for a special-shaped part, comprising a first clamping part, a second clamping part and an extended three-jaw, wherein the first clamping part and the second clamping part have the same axis and radius and can be combined into a cylindrical outer shape structure, the extended three-jaw is clamped on the outside of the cylinder, the first clamping part and the second clamping part are provided with corresponding first fixing cavities and second fixing cavities, the first fixing cavities and the second fixing cavities are adapted to the clampable outer contour of the special-shaped part, and at least two matching positioning parts are provided between the first clamping part and the second clamping part.

[0006] As an implementation mode of the present utility model, a plurality of paving grooves are provided in the first fixing cavity and the second fixing cavity, and the paving grooves are used to accommodate the protrusions on the outer contour of the special-shaped part.

[0007] As an implementation manner of the present utility model, the positioning portion includes a positioning groove and a positioning platform, the positioning groove is arranged on the first clamping portion, and the positioning platform is correspondingly arranged on the second clamping portion.

[0008] As an implementation manner of the present utility model, the positioning platform is a triangular convex ridge arranged along the axis of the second clamping portion, and the positioning groove is a triangular groove arranged along the axis of the first clamping portion.

[0009] As an implementation mode of the present utility model, the positioning platform is a trapezoidal convex ridge arranged along the axis of the second clamping portion, and the positioning groove is a triangular groove arranged along the axis of the first clamping portion.

[0010] As an embodiment of the present utility model, the positioning platform is a columnar boss arranged on the second clamping portion, preferably a cylindrical boss, and the positioning groove is a columnar groove matched with the positioning platform, preferably a cylindrical groove.

[0011] As an implementation manner of the present utility model, the positioning platform and the second clamping portion are integrally formed.

[0012] As an implementation manner of the present utility model, the positioning platform and the second clamping portion are of a split structure and are fixedly connected to the second clamping portion.

[0013] As an embodiment of the present invention, the length of the extended three-claw clamping part exceeds half of the axial length of the first clamping part and the second clamping part, and preferably the length of the clamping part is equal to the length of the first clamping part and the second clamping part.

[0014] As an implementation manner of the utility model, the first clamping part and the second clamping part are made of aluminum alloy material.

[0015] The beneficial effects of adopting the above technical solution are:

[0016] The utility model provides a fully covered clamp for special-shaped parts, comprising a first clamping part, a second clamping part and an extended three-claw. The first clamping part and the second clamping part can be combined into a cylindrical shape structure. The extended three-claw is clamped outside the cylinder, and its clamping length is equivalent to that of the first clamping part and the second clamping part, which ensures that the special-shaped part is evenly stressed and can be stably supported, thereby reducing vibration and deformation during processing; the first clamping part and the second clamping part are provided with corresponding first fixing cavities and second fixing cavities, which are adapted to the clampable shape contour of the special-shaped part, and can clamp the special-shaped part The parts are firmly fixed without twisting and sliding; at least two matching positioning parts are arranged between the first clamping part and the second clamping part, which can prevent the first clamping part or the second clamping part from vibrating and shifting during processing, and also ensure the consistency of clamping; the utility model fully covers the special-shaped parts in the cavity, so that the special-shaped parts can be stably supported during processing, so that the rotation speed and cutting feed of the machine tool reach a reasonable level, the production efficiency is improved, and the special-shaped parts are evenly stressed, which reduces the clamping deformation caused by holding the workpiece, ensures the accuracy of processing, and improves the product qualification rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0018] Figure 2 It is a three-dimensional structural schematic diagram of the utility model (excluding the extended three claws);

[0019] Figure 3 It is an exploded view of the three-dimensional structure of the utility model (excluding the extended three claws);

[0020] Figure 4 This utility model Figure 3 Exploded view of the three-dimensional structure from another angle;

[0021] Figure 5 This is a schematic diagram of the structure of the utility model in use (excluding the extended three-claw);

[0022] Figure 6 This utility model Figure 5 Exploded diagram of the three-dimensional structure.

[0023] Among them: 1. first clamping part; 2. second clamping part; 3. first fixing cavity; 4. second fixing cavity; 5. special-shaped part; 6. positioning part; 6-1. positioning groove; 6-2. positioning platform; 7. giving way groove; 8. extended three claws. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model is clearly and completely described below in conjunction with specific embodiments.

[0025] like Figures 1 to 6The fully enclosed clamp for the special-shaped part shown in the figure comprises a first clamping part 1, a second clamping part 2 and an extended three-claw 8. The first clamping part 1 and the second clamping part 2 have the same axis and radius and can be combined into a cylindrical shape structure. The extended three-claw 8 is clamped outside the cylinder. The length of the clamping part of the extended three-claw 8 exceeds half of the length of the axis of the first clamping part 1 and the second clamping part 2. Preferably, the length of the clamping part is equal to the length of the first clamping part 1 and the second clamping part 2. The first clamping part 1 and the second clamping part 2 are provided with corresponding first fixing cavities 3 and second fixing cavities 4. The first fixing cavities 3 and the second fixing cavities 4 are adapted to the clampable shape contour of the special-shaped part 5 for clamping the special-shaped part 5 firmly. The first fixing cavity 3 is parallel to the axis of the first clamping part 1 and the second clamping part 2 and is used to accommodate the straight part of the special-shaped part 5, and the second fixing cavity 4 is used to accommodate the special-shaped part of the special-shaped part 5; a plurality of make-way grooves 7 are arranged in the first fixing cavity 3 and the second fixing cavity 4 to accommodate the protrusions on the outer contour of the special-shaped part 5, such as logos or specifications and models, etc. The position of the make-way groove 7 corresponds to the protrusions on the outer contour of the special-shaped part 5, and its shape is set to a regular shape that is easy to process, and its size is larger than the protrusions of the special-shaped part 5; at least two matching positioning parts 6 are arranged between the first clamping part 1 and the second clamping part 2, which are used to position the special-shaped part 5 when clamping it and prevent misalignment caused by large fluctuations during processing.

[0026] like Figures 2 to 4 As shown, the positioning portion 6 includes a positioning groove 6-1 and a positioning platform 6-2, the positioning groove 6-1 and the positioning platform 6-2 are arranged on both sides of the first fixing cavity 3, the positioning groove 6-1 is arranged on the first clamping portion 1, and the positioning platform 6-2 is correspondingly arranged on the second clamping portion 2; in embodiment 1, the positioning platform 6-2 is arranged as a triangular convex ridge arranged along the axis of the second clamping portion 2, and the positioning groove 6-1 is a triangular groove arranged along the axis of the first clamping portion 1; in embodiment 2 (not shown in the figure), the positioning platform 6-2 is a trapezoidal convex ridge arranged along the axis of the second clamping portion 2 The positioning groove 6-1 is a triangular groove arranged along the axis of the first clamping part 1; in Example 3 (not shown in the figure), the positioning platform 6-2 is a cylindrical boss arranged on the second clamping part 2, preferably a cylindrical boss, and the positioning groove 6-1 is a cylindrical groove matched with the positioning platform 6-2, preferably a cylindrical groove; the positioning platform 6-2 can be arranged to be integrally formed with the second clamping part 2; it can also be arranged that the positioning platform 6-2 and the second clamping part 2 are a split structure, and the positioning platform 6-2 and the second clamping part 2 are fixedly connected by means of threads or interference fit.

[0027] The first clamping part 1 and the second clamping part 2 are made of aluminum alloy material, which can ensure that the special-shaped part 5 to be processed is not damaged during clamping.

[0028] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A fully covered clamp for special-shaped parts, characterized in that: The invention comprises a first clamping portion (1), a second clamping portion (2) and an extended three-claw (8); the first clamping portion (1) and the second clamping portion (2) have the same axis and radius and can be combined into a cylindrical outer structure; the extended three-claw (8) is clamped outside the cylinder; the first clamping portion (1) and the second clamping portion (2) are provided with corresponding first fixing cavities (3) and second fixing cavities (4); the first fixing cavities (3) and the second fixing cavities (4) are adapted to the clampable outer contour of the special-shaped part (5); and at least two matching positioning portions (6) are provided between the first clamping portion (1) and the second clamping portion (2).

2. The fully covered clamp for special-shaped parts according to claim 1, characterized in that: A plurality of clearance grooves (7) are provided in the first fixing cavity (3) and the second fixing cavity (4), and the clearance grooves (7) are used to accommodate protrusions on the outer contour of the special-shaped part (5).

3. The fully covered clamp for special-shaped parts according to claim 1, characterized in that: The positioning portion (6) comprises a positioning groove (6-1) and a positioning platform (6-2); the positioning groove (6-1) is arranged on the first clamping portion (1), and the positioning platform (6-2) is correspondingly arranged on the second clamping portion (2).

4. A fully covered clamp for special-shaped parts according to claim 3, characterized in that: The positioning platform (6-2) is a triangular convex ridge arranged along the axis of the second clamping portion (2), and the positioning groove (6-1) is a triangular groove arranged along the axis of the first clamping portion (1).

5. A fully covered clamp for special-shaped parts according to claim 3, characterized in that: The positioning platform (6-2) is a trapezoidal convex ridge arranged along the axis of the second clamping portion (2), and the positioning groove (6-1) is a triangular groove arranged along the axis of the first clamping portion (1).

6. A fully covered clamp for special-shaped parts according to claim 3, characterized in that: The positioning platform (6-2) is a columnar boss arranged on the second clamping portion (2), and the positioning groove (6-1) is a columnar groove matched with the positioning platform (6-2).

7. A fully covered clamp for special-shaped parts according to claim 3, characterized in that: The positioning platform (6-2) and the second clamping portion (2) are integrally formed.

8. The fully covered clamp for special-shaped parts according to claim 3, characterized in that: The positioning platform (6-2) and the second clamping portion (2) are of a split structure and are fixedly connected to the second clamping portion (2).

9. The fully covered clamp for special-shaped parts according to claim 1, characterized in that: The length of the clamping portion of the extended three-claw (8) exceeds half of the axial length of the first clamping portion (1) and the second clamping portion (2).

10. The fully covered clamp for special-shaped parts according to claim 1, characterized in that: The first clamping part (1) and the second clamping part (2) are made of aluminum alloy material.

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