Combined clamp applied to gearbox gear machining

Abstract

The utility model discloses a combined clamp applied to gearbox gear machining, and relates to the field of expansion sleeve type clamps. The device comprises an installation disc and a taper mandrel, an expansion sleeve blind rivet is movably installed on the inner side of the taper mandrel in a penetrating mode, a pressing disc is fixedly installed on the top of the expansion sleeve blind rivet, an expansion sleeve is arranged on the outer side of the taper mandrel in a sleeved mode, and the pressing disc is connected with the top face of the expansion sleeve in a buckled mode through a buckling mechanism. After machining is completed, the external driving part releases pulling force, the top of the expansion sleeve can be pulled to move, the pressure between the expansion sleeve and the taper mandrel is rapidly reduced through the movement, relative movement is allowed through the design of the buckling teeth, meanwhile, the expansion sleeve can rapidly reset under the self-elasticity effect, and therefore machining precision is improved. In the resetting process, the pressure and friction force between the expansion sleeve and the taper mandrel are reduced, so that the resetting speed of the expansion sleeve is improved, and the workpiece taking process after machining is completed is smoother and more efficient.

Description

Technical Field

[0001] This utility model relates to the field of expansion sleeve type fixtures, specifically a combination fixture applied to gearbox gear processing. Background Technology

[0002] Expanding sleeve fixtures play an important role in the field of gearbox gear processing. They achieve precise positioning and clamping of workpieces through the clamping mechanism inside the expanding sleeve, ensuring high precision and stability in gear processing. Expanding sleeve fixtures have advantages such as strong adaptability, simple operation, and improved processing efficiency, and can meet the processing needs of gears of different specifications.

[0003] Existing expansion sleeve clamps are widely used in gearbox gear machining, typically for internal support and clamping of the gear's inner bore. However, a problem exists in practical use: the traditional expansion sleeve clamp works by using the external expansion of a deformable expansion sleeve to achieve internal support of the gear. After machining, the reset efficiency of the expansion sleeve determines when the gear can be removed. Traditional expansion sleeve reset causes significant friction between the expansion sleeve and the inner tapered mandrel due to pressure. This significant friction results in a slow reset rate, affecting gear machining efficiency and reducing the ease of use of the expansion sleeve clamp. Utility Model Content

[0004] Based on this, the purpose of this utility model is to provide a combined fixture for gearbox gear processing to solve the technical problem of slow reset efficiency of the expansion sleeve in traditional expansion sleeve fixtures.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a combined fixture for processing gearbox gears, including a mounting plate and a tapered mandrel, wherein a sizing sleeve rivet is movably mounted through the inner side of the tapered mandrel, a pressure plate is fixedly mounted on the top of the sizing sleeve rivet, and a sizing sleeve is sleeved on the outer side of the tapered mandrel, and the pressure plate and the top surface of the sizing sleeve are fastened together by a fastening mechanism;

[0006] The fastening mechanism includes a plurality of first fastening teeth and second fastening teeth. The first fastening teeth are fixed to the lower surface of the pressure plate, and the second fastening teeth are fixed to the upper part of the inner wall of the expansion sleeve.

[0007] By adopting the above technical solution, the stable support and positioning of the gearbox gears are achieved through the combined use of the mounting plate and the tapered mandrel. At the same time, the expansion sleeve pull studs movably installed on the inner side of the tapered mandrel and the pressure plate fixedly installed on the top, together with the expansion sleeve sleeved on the outer side of the tapered mandrel, form a compact clamping mechanism. The pressure plate and the expansion sleeve are fastened together by a fastening mechanism, which not only ensures the effective transmission of force, but also makes the structure of the clamp more compact and reasonable.

[0008] Furthermore, the first and second fastening teeth are engaged with each other, and the first fastening tooth has an "L" shaped structure.

[0009] By adopting the above technical solution, a tight connection and effective force transmission between the pressure plate and the expansion sleeve are achieved. At the same time, the first snap-fit ​​tooth has an "L" shaped structure, which not only enhances the stability and firmness of the snap-fit.

[0010] Furthermore, a plurality of the first and second fastening teeth are arranged in an equidistant ring, and the first and second fastening teeth are both made of hard metal.

[0011] By adopting the above technical solutions, the clamp is subjected to more uniform force, avoiding the problem of local stress concentration and improving the load-bearing capacity and service life of the clamp.

[0012] Furthermore, a gap is formed between adjacent first fastening teeth, the size of which is larger than the size of the second fastening tooth, and the second fastening tooth can be fastened to the inside of the first fastening tooth through the gap.

[0013] By adopting the above technical solution, the second fastening tooth can easily access and fasten to the inside of the first fastening tooth through the gap, thus realizing the flexibility and adjustability of the fastening mechanism.

[0014] Furthermore, the bottom end of the expansion sleeve pull stud is threaded to the external driving part, and the expansion sleeve is elastically connected by several tapered blocks, with relative movement between adjacent tapered blocks.

[0015] By adopting the above technical solution, the installation and disassembly of the fixture are made more convenient and faster, improving the flexibility and efficiency of the processing. At the same time, the expansion sleeve is elastically connected by several tapered blocks, and the adjacent tapered blocks are relatively movable. This structure allows the expansion sleeve to expand evenly when subjected to tensile force, tightly fitting the inner hole of the gearbox gear, and achieving a high-precision clamping effect.

[0016] Furthermore, an internal hexagonal hole is provided above the central axis of the pressure plate, and several mounting holes are provided on the mounting plate.

[0017] By adopting the above technical solution, the internal hexagonal hole allows for easy operation using tools such as an internal hexagonal wrench when it is necessary to disassemble or fix the pressure plate, expansion sleeve, or pull stud, thus improving the convenience and practicality of the clamp.

[0018] In summary, the present invention has the following main advantages:

[0019] This invention utilizes a fastening mechanism. After processing, the external drive unit releases the tension. This process is first transmitted to the pressure plate through the expansion sleeve pull stud. Due to the fastening arrangement of the first and second fastening teeth, the pressure plate, while releasing the tension, will pull the top of the expansion sleeve to move in position. This movement achieves a rapid reduction in pressure between the expansion sleeve and the tapered mandrel. Because the design of the fastening teeth allows for relative movement, and the expansion sleeve is elastically connected by several tapered blocks, it can quickly reset under its own elasticity after the pressure is reduced. This reset process reduces the pressure and friction between the expansion sleeve and the tapered mandrel, thereby improving the reset rate of the expansion sleeve and making the part removal process after processing smoother and more efficient. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 This is a schematic diagram of the tapered mandrel of this utility model;

[0022] Figure 3 This is a bottom view of the expansion sleeve tie of this utility model.

[0023] Figure 4 This is a schematic diagram of the expansion sleeve of this utility model.

[0024] In the diagram: 1. Mounting plate; 2. Tapered mandrel; 3. Expansion sleeve; 4. Expansion sleeve pull stud; 5. Pressure plate; 6. Fastening mechanism; 601. First fastening tooth; 602. Second fastening tooth; 603. Clearance; 7. Socket hexagonal hole; 8. Mounting hole. Detailed Implementation

[0025] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0026] In this embodiment

[0027] Combination fixtures used in gearbox gear machining, such as Figure 1-4 As shown, it includes a mounting plate 1 and a tapered mandrel 2. A tension sleeve rivet 4 is movably mounted through the inner side of the tapered mandrel 2. A pressure plate 5 is fixedly mounted on the top of the tension sleeve rivet 4. A tension sleeve 3 is sleeved on the outer side of the tapered mandrel 2. The pressure plate 5 and the top surface of the tension sleeve 3 are fastened together by a fastening mechanism 6.

[0028] The fastening mechanism 6 includes several first fastening teeth 601 and second fastening teeth 602. The first fastening teeth 601 are fixed to the lower surface of the pressure plate 5, and the second fastening teeth 602 are fixed to the upper inner wall of the expansion sleeve 3. Through the cooperation of the mounting plate 1 and the tapered mandrel 2, stable support and positioning of the gearbox gear are achieved. At the same time, the expansion sleeve pull stud 4 movably installed on the inner side of the tapered mandrel 2 and the pressure plate 5 fixedly installed on the top, together with the expansion sleeve 3 sleeved on the outer side of the tapered mandrel 2, form a compact clamping mechanism. The pressure plate 5 and the expansion sleeve 3 are fastened together by the fastening mechanism 6, which not only ensures the effective transmission of force, but also makes the structure of the fixture more compact and reasonable. The first fastening teeth 601 and the second fastening teeth 602 included in the fastening mechanism 6 are fixed on the pressure plate 5 and the expansion sleeve 3 respectively, which further enhances the stability and reliability of the fixture and ensures the accuracy and efficiency in the processing process.

[0029] See Figure 1 , Figure 2 , Figure 3 , Figure 4 The first snap-fitting tooth 601 and the second snap-fitting tooth 602 are interlocked. The first snap-fitting tooth 601 has an "L" shape, which realizes a tight connection and effective force transmission between the pressure plate 5 and the expansion sleeve 3. At the same time, the "L" shape of the first snap-fitting tooth 601 not only enhances the stability and firmness of the interlocking, but also makes it easier for the pressure plate 5 to pull the top of the expansion sleeve 3 to move its position when the tension is released. This achieves a rapid reduction of the pressure between the expansion sleeve 3 and the tapered mandrel 2, improves the reset rate of the expansion sleeve 3, and thus improves the processing efficiency.

[0030] See Figure 1 , Figure 2 , Figure 3 , Figure 4 The first snap-fit ​​teeth 601 and the second snap-fit ​​teeth 602 are arranged in an equidistant ring, and the first snap-fit ​​teeth 601 and the second snap-fit ​​teeth 602 are both made of hard metal, which makes the clamp more uniform when subjected to force, avoids the problem of local stress concentration, and improves the load-bearing capacity and service life of the clamp. At the same time, the first snap-fit ​​teeth 601 and the second snap-fit ​​teeth 602 are both made of hard metal. This choice not only ensures the strength and hardness of the snap-fit ​​teeth, but also makes the snap-fit ​​more reliable and less prone to deformation or damage, further improving the stability and durability of the clamp.

[0031] See Figure 1 , Figure 2 , Figure 3 , Figure 4A gap 603 is formed between adjacent first snap-fit ​​teeth 601. The size of the gap 603 is larger than the size of the second snap-fit ​​tooth 602, and the second snap-fit ​​tooth 602 can be snapped to the inside of the first snap-fit ​​tooth 601 through the gap 603. This allows the second snap-fit ​​tooth 602 to easily access and snap to the inside of the first snap-fit ​​tooth 601 through the gap 603, realizing the flexibility and adjustability of the snap-fit ​​mechanism. At the same time, the size of the gap 603 is larger than the size of the second snap-fit ​​tooth 602. This setting not only ensures the smoothness of the snap-fit, but also avoids the snap-fit ​​difficulties or damage caused by size mismatch, further improving the ease of use and reliability of the fixture.

[0032] See Figure 1 , Figure 2 , Figure 3 , Figure 4 The bottom end of the expansion sleeve rivet 4 is threaded to the external drive unit. The expansion sleeve 3 is elastically connected by several tapered blocks, and the adjacent tapered blocks can move relative to each other, making the installation and disassembly of the fixture more convenient and quick, improving the flexibility and efficiency of the processing. At the same time, the expansion sleeve 3 is elastically connected by several tapered blocks, and the adjacent tapered blocks can move relative to each other. This structure allows the expansion sleeve 3 to expand evenly when subjected to tension, tightly fitting the inner hole of the gearbox gear, achieving a high-precision clamping effect. After the tension is released, the expansion sleeve 3 can quickly return to its original position under its own elasticity, reducing the pressure and friction between it and the tapered mandrel 2, further improving the performance and life of the fixture.

[0033] See Figure 1 , Figure 2 , Figure 3 , Figure 4 The pressure plate 5 has an internal hexagonal hole 7 above its central axis, and the mounting plate 1 has several mounting holes 8. The internal hexagonal hole 7 allows for easy operation with tools such as an internal hexagonal wrench when it is necessary to disassemble or fix the pressure plate 5 and the expansion sleeve rivet 4, which improves the convenience and practicality of the fixture. At the same time, the mounting plate 1 has several mounting holes 8, which allows the fixture to be easily installed on various processing equipment, adapting to the needs of different processing scenarios. This not only enhances the versatility and adaptability of the fixture, but also improves the stability and efficiency of the processing process.

[0034] The implementation principle of this embodiment is as follows: the mounting plate 1 is fixed on the processing equipment as a basic component, the tapered mandrel 2 is mounted on the mounting plate 1 to position and support the gearbox gear to be processed, and the expansion sleeve 3 is sleeved on the outside of the tapered mandrel 2. When the external drive unit is connected to the bottom end of the expansion sleeve pull stud 4 through the thread and applies tension, the pressure plate 5 is subjected to tension and transmits the force to the expansion sleeve 3 through the fastening mechanism 6, causing the tapered block of the expansion sleeve 3 to expand outward, thereby clamping the gearbox gear. After processing, the external drive unit releases the tension. At the same time, due to the fastening setting of the first fastening tooth 601 and the second fastening tooth 602, the pressure plate 5 pulls the top of the expansion sleeve 3 to move its position during the release of tension, thereby realizing the rapid reduction of the pressure between the expansion sleeve 3 and the tapered mandrel 2. Then, the expansion sleeve 3 resets under its own elasticity, so that the pressure and friction between the expansion sleeve 3 and the tapered mandrel 2 reduce the impact on the reset rate of the expansion sleeve 3 during the reset process. After that, the processed gearbox gear can be removed.

[0035] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A combined fixture for machining gearbox gears, characterized in that: Includes a mounting plate (1) and a tapered mandrel (2). A tension sleeve rivet (4) is movably mounted through the inner side of the tapered mandrel (2). A pressure plate (5) is fixedly mounted on the top of the tension sleeve rivet (4). A tension sleeve (3) is sleeved on the outer side of the tapered mandrel (2). The pressure plate (5) and the top surface of the tension sleeve (3) are fastened together by a fastening mechanism (6). The fastening mechanism (6) includes a plurality of first fastening teeth (601) and second fastening teeth (602). The first fastening teeth (601) are fixed to the lower surface of the pressure plate (5), and the second fastening teeth (602) are fixed to the upper part of the inner wall of the expansion sleeve (3).

2. The combined fixture for gearbox gear machining according to claim 1, characterized in that: The first snap-fit ​​tooth (601) and the second snap-fit ​​tooth (602) are snapped together, and the first snap-fit ​​tooth (601) has an "L" shaped structure.

3. The combined fixture for gearbox gear machining according to claim 1, characterized in that: A plurality of the first snap-fit ​​teeth (601) and the second snap-fit ​​teeth (602) are arranged in an equidistant ring, and the first snap-fit ​​teeth (601) and the second snap-fit ​​teeth (602) are both made of hard metal.

4. The combined fixture for gearbox gear machining according to claim 1, characterized in that: A gap (603) is formed between adjacent first snap-fit ​​teeth (601), the size of the gap (603) is larger than the size of the second snap-fit ​​tooth (602), and the second snap-fit ​​tooth (602) can be snapped to the inside of the first snap-fit ​​tooth (601) through the gap (603).

5. The combined fixture for gearbox gear machining according to claim 1, characterized in that: The bottom end of the expansion sleeve pull stud (4) is threaded to the external drive part. The expansion sleeve (3) is elastically connected by several tapered blocks, and the adjacent tapered blocks are relatively movable.

6. The combined fixture for gearbox gear machining according to claim 1, characterized in that: The pressure plate (5) has an internal hexagonal hole (7) above its central axis, and the mounting plate (1) has several mounting holes (8).

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