Self-centering clamping device for milling thin-wall shell

Abstract

The invention discloses a thin-wall shell milling self-centering clamping device which comprises a clamp base and a clamp body, the clamp body is arranged on the clamp base, an outer side fixing mechanism is arranged on the clamp base, the clamp body is of a hollow structure, a slotting centering conical ring is arranged at the top of the clamp body, and an outer side fixing mechanism is arranged on the outer side fixing mechanism. A hollow cone shaft is arranged in the slotting centering cone ring, an adjusting screw is arranged in the hollow cone shaft in a penetrating mode, the adjusting screw is in threaded fit with the clamp base, the height of the hollow cone shaft is adjusted by changing the height of the adjusting screw, and then the opening angle of the slotting centering cone ring is changed. The device has the beneficial effects of self-centering, height adjustment, reliable fixation, simplicity and convenience in operation, quickness in assembly and disassembly, deformation prevention, high adaptability, high safety and the like, is suitable for milling the thin-wall shell, and improves the machining efficiency and the machining quality.

Description

Technical Field

[0001] The invention belongs to the field of clamping and positioning tooling, and in particular relates to a self-centering clamping device for milling a thin-wall shell. Background Art

[0002] Thin-walled shell parts often play the role of connection, sealing, positioning, etc. in circular rotating body products. Some of the features have very strict requirements on angle and linear dimensions. The wall thickness tolerance is within +0.140mm and the angle dimension is within ±10'. During the finishing process, due to the unevenness of the part features, the stress release of the material, improper positioning and clamping, it is easy to cause dimensional deviation, serious product deformation, and unqualified products. Therefore, during the processing process, the positioning and clamping of the product must be strictly controlled to avoid dimensional deviation. Summary of the invention

[0003] The purpose of the present invention is to provide a self-centering clamping device for milling thin-walled shells to solve the problem of dimensional tolerance in machining thin-walled shells.

[0004] In order to solve the above problems, the present invention discloses a self-centering clamping device for milling thin-walled shells, comprising a clamp base, a clamp body, the clamp body is arranged on the clamp base, an outer fixing mechanism is arranged on the clamp base, the clamp body is a hollow structure, a slotted centering cone ring is arranged on the top of the clamp body, a hollow cone shaft is arranged in the slotted centering cone ring, an adjusting screw is arranged through the hollow cone shaft, the adjusting screw is threadably matched with the clamp base, the height of the hollow cone shaft is adjusted by changing the height of the adjusting screw, and then the opening angle of the slotted centering cone ring is changed.

[0005] As a further improvement of the above technical solution: The clamp body is fixed on the clamp base by means of locking screws.

[0006] The clamp body is provided with air holes which are perpendicular to the hollow structure.

[0007] The outer fixing mechanism includes a pressure plate seat and a pressure plate slidably arranged in the pressure plate seat. The pressure plate seat is fixed to the clamp base by connecting screws. A stud is provided through the pressure plate. One end of the stud is threadedly engaged with the clamp base, and the other end is threadedly engaged with a limiting nut. A compression spring is provided on the outer sleeve of the stud.

[0008] Compared with the prior art, the present invention has the following beneficial effects: Self-centering function: The design of the slotted centering cone ring and the hollow cone shaft realizes the self-centering function, ensuring the center positioning accuracy of the thin-walled shell during the processing and improving the processing quality. By adjusting the screw, the height of the hollow cone shaft can be accurately adjusted, thereby changing the opening angle of the slotted centering cone ring to adapt to thin-walled shells of different sizes and improving the versatility of the fixture.

[0009] Air hole design: The clamp body is provided with air holes perpendicular to the hollow structure, which facilitates the circulation of coolant during processing and improves processing efficiency and quality.

[0010] Easy operation: When loading and unloading parts, you only need to loosen the nuts on the pressure plate and the screws on the tapered shaft to replace the parts. The whole process is simple to operate and improves work efficiency.

[0011] Quick loading and unloading: Through the design of reasonable fixing and adjustment mechanism, the function of quick loading and unloading of parts is realized, which saves processing preparation time and improves production efficiency.

[0012] Prevent deformation: By screwing the adjusting screw into the tapered shaft and fixing the thin-walled shell, deformation during processing is prevented and processing accuracy is ensured.

[0013] Strong adaptability: The clamping device can adapt to thin-walled shells of different sizes and shapes and has a wide range of applicability.

[0014] High safety: Through reasonable structure and design, the safety during operation is ensured and the operation risk is reduced.

[0015] To sum up, the self-centering clamping device for milling thin-walled shells of this embodiment has the beneficial effects of self-centering, height adjustment, reliable fixation, easy operation, quick loading and unloading, prevention of deformation, strong adaptability and high safety. It is suitable for milling of thin-walled shells and improves the processing efficiency and quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the structure of the clamp base of the present invention; Figure 3 This is a schematic diagram of the structure of the clamp of the present invention; Figure 4 It is a schematic diagram of the structure of the hollow tapered shaft of the present invention.

[0017] Figure numerals: 1. clamp base; 10. compression spring; 11. stud; 12. connecting screw; 2. clamp body; 21. slotted centering cone ring; 22. air hole; 3. locking screw; 4. hollow cone shaft; 5. adjusting screw; 6. pressure plate; 7. pressure plate seat; 8. limit nut; 14. thin-walled shell. DETAILED DESCRIPTION

[0018] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0019] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0020] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] like Figures 1 to 4 As shown, the thin-walled shell milling self-centering clamping device of this embodiment includes a clamp base 1, a clamp body 2, and the clamp body 2 is arranged on the clamp base 1, the clamp base 1 is provided with an outer fixing mechanism, the clamp body 2 is a hollow structure, and a slotted centering cone ring 21 is arranged on the top of the clamp body 2, a hollow cone shaft 4 is arranged in the slotted centering cone ring 21, and an adjusting screw 5 is arranged through the hollow cone shaft 4, and the adjusting screw 5 is threadedly matched with the clamp base 1, and the height of the hollow cone shaft 4 is adjusted by changing the height of the adjusting screw 5, thereby changing the opening angle of the slotted centering cone ring 21.

[0023] The clamp body 2 is fixed on the clamp base 1 by means of locking screws 3 .

[0024] The clamp body 2 is provided with air holes 22 perpendicular to the hollow structure.

[0025] The outer fixing mechanism includes a pressure plate seat 7 and a pressure plate 6 slidably arranged in the pressure plate seat 7. The pressure plate seat 7 is fixed to the clamp base 1 by connecting screws 12. A stud 11 is provided through the pressure plate 6. One end of the stud 11 is threadedly engaged with the clamp base 1, and the other end is threadedly engaged with a limiting nut 8. A compression spring 10 is provided on the outer sleeve of the stud 11.

[0026] The fixture base 1 is fixed on the workbench, the fixture body 2 is inlaid in the upper end groove of the fixture base 1, the center hole is inserted into the tapered shaft 4, and the 4 locking screws 3 are screwed into the fixture base 1 through the 4 threaded holes of the fixture body 2. The circular runout requirement is based on the fact that the runout of the fixture body 2 around is not greater than 0.015. The connecting screws 12 are screwed into the pressure plate seat 7 and fixed on the fixture body 2. The thin-walled shell 14 is inserted into the fixture body 2, and the pressure plate 6 is installed in the pressure plate seat 7. The stud 11 is inserted into the compression spring 10 through the pressure plate 6 and the pressure plate seat 7, and the other end is screwed into the fixture base 1. Use a wrench to tighten the limit nut 8 to fix the pressure plate 6 so that the thin-walled shell 14 is fixed and compressed around. Screw the adjusting screw 5 into the hollow tapered shaft 4 to fix the thin-walled shell 14 to prevent deformation and expand the parts.

[0027] When loading and unloading parts, it is only necessary to loosen the limit nut 8 at the pressure plate 6 and the adjusting screw 5 at the hollow tapered shaft 4 to replace the parts. The whole process is simple to operate, and the clamping and disassembly are convenient and quick.

[0028] The above is only an embodiment of the present invention, and the common sense such as the known specific structure and characteristics in the scheme is not described in detail here. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the attached claims rather than the above description, so it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

Claims

1. A self-centering clamping device for milling thin-walled shells, characterized in that: The invention comprises a clamp base (1) and a clamp body (2), wherein the clamp body (2) is arranged on the clamp base (1), an outer fixing mechanism is arranged on the clamp base (1), the clamp body (2) is a hollow structure, a slotted centering cone ring (21) is arranged on the top of the clamp body (2), a hollow cone shaft (4) is arranged inside the slotted centering cone ring (21), an adjusting screw (5) is arranged through the hollow cone shaft (4), the adjusting screw (5) is threadedly matched with the clamp base (1), and the height of the hollow cone shaft (4) is adjusted by changing the height of the adjusting screw (5), thereby changing the opening angle of the slotted centering cone ring (21).

2. The self-centering clamping device for milling thin-walled shells according to claim 1, characterized in that: The clamp body (2) is fixed on the clamp base (1) via a locking screw (3).

3. The self-centering clamping device for milling thin-walled shells according to claim 1, characterized in that: The clamp body (2) is provided with an air hole (22) perpendicular to the hollow structure.

4. The self-centering clamping device for milling thin-walled shells according to claim 1, characterized in that: The outer fixing mechanism comprises a pressure plate seat (7) and a pressure plate (6) slidably arranged in the pressure plate seat (7); the pressure plate seat (7) is fixed to the clamp base (1) by connecting screws (12); a stud bolt (11) is provided through the pressure plate (6); one end of the stud bolt (11) is threadedly engaged with the clamp base (1), and the other end is threadedly engaged with a limiting nut (8); a compression spring (10) is provided on the outer sleeve of the stud bolt (11).

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