Fixture for machining bushing

Abstract

The utility model discloses a clamp for processing a bushing, which mainly comprises a plurality of key components, and the components comprise an outer frame, a guide rod, a mounting frame, a cantilever pin, an outer clamping plate, a cam bearing follower, a threaded rod and a conical head. The outer frame is designed to be of a door-shaped structure, and the design not only is attractive, but also can provide a stable installation foundation and use performance. The number of the guide rods is two, and the two guide rods transversely penetrate through the two longitudinal plates of the outer frame, so that the guide precision of the device in the using process is ensured. The mounting frame is arranged between the two guide rods, and the bushing can be more accurately fixed and positioned by using the fixture disclosed by the utility model, so that the end trimming accuracy is improved. Due to the design of the clamp, the end trimming process of the bushing is more convenient, the requirement for manual operation is reduced, and therefore the machining speed is increased. Due to the fact that the situation that the lining cylinder is manually and directly operated to be trimmed is reduced, the safety of operators is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of liner processing, and specifically relates to a clamp for liner processing. Background Art

[0002] The use of bushings is indispensable in the manufacturing process of transformer housings. They provide assembly compensation, thereby improving assembly accuracy and the overall maintainability of the transformer. However, during the implementation of the disclosed technical solution, we discovered that the existing technology has at least the following problems: in the later stages of bushing processing, the ends of the bushings often require fine trimming. Due to the presence of a rear flange on the bushings, traditional three-jaw chucks are not convenient to use. Therefore, in some processing situations, operators are forced to manually hold the bushings and perform trimming directly on the end faces. Utility Model Content

[0003] The purpose of the utility model is to provide a clamp for processing a liner to solve the problems raised in the above background technology.

[0004] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a fixture for processing a liner, which is mainly composed of a plurality of key components, including an outer frame, a guide rod, a mounting frame, a cantilever pin, an outer clamping plate, a cam bearing follower, a threaded rod and a tapered head. The outer frame is designed as a door-type structure, which is not only beautiful but also can provide a stable installation foundation and performance. There are two guide rods, which run horizontally between the two longitudinal plates of the outer frame, ensuring the guiding accuracy of the device during use. The mounting frame is arranged between the two guide rods, providing a stable installation platform for other components, thereby ensuring the stability and reliability of the entire device.

[0005] Cantilever pins are inserted into the inner wall of the mounting frame, primarily supporting and securing the outer clamps. Two outer clamps are hinged relative to the cantilever pins, with their outer ends designed as external clamps to facilitate clamping and securing the bushing. This design ensures greater flexibility and stability when clamping the bushing. Two cam bearing followers are also located at the inner ends of the outer clamps. Their primary function is to precisely clamp and release the bushing, ensuring accurate positioning and stability during machining.

[0006] The threaded rod and tapered head are key components of the fixture, performing both adjustment and positioning functions within the assembly. The threaded rod precisely adjusts the various components of the fixture to accommodate bushings of varying sizes and shapes. The tapered head precisely positions the bushing, ensuring its accurate position during machining. The entire fixture is designed with precision and ease of operation in mind, ensuring efficient and stable operation during bushing machining.

[0007] A threaded rod runs through the horizontal plate of the outer frame and is used to adjust and fix the position of the bushing. A tapered head is set at the inner end of the threaded rod and is located between the two cam bearing followers. Its inclined surface contacts both cam bearing followers, ensuring even distribution of clamping force.

[0008] In order to further improve the stability of the device and the convenience of operation, a guide shaft is also provided on the outer frame, and the guide shaft also passes through the outer clamping plate, and a strip groove for passing the guide shaft is provided on the outer clamping plate to facilitate the free sliding of the guide shaft.

[0009] Two pin plates are installed on the guide shaft, each located outside the two outer clamps, to further secure and stabilize the outer clamps. A first rectangular coil spring is also installed between the corresponding pin plate and the outer clamp. This spring provides a certain elastic force, giving the outer clamps a certain degree of resilience when clamping the bushing, thereby improving the stability and reliability of the clamping.

[0010] The outer frame also features two outer cylinders, connected by a mounting plate to enhance the device's overall strength and stability. A second rectangular coil spring is sleeved around the guide rod, located between the inner wall of the outer frame and the outer wall of the mounting frame. This spring provides resilience to the guide rod, ensuring it maintains proper return to its original position during movement.

[0011] The cantilever pin is also equipped with a dry bushing, the inner end of which abuts the inner end of the outer clamping plate to reduce wear and increase service life. The outer clamping plate is clamped to the inner wall of the bushing, and the rear end of the bushing is equipped with a flange to facilitate fixing and positioning the bushing.

[0012] To facilitate manual adjustment of the threaded rod, the designers added auxiliary levers to the rod's outer end. Four of these levers are strategically arranged in a circular pattern. This design allows the operator to easily grasp and rotate the rod, precisely tightening and loosening the bushing. This structure allows for easier and more accurate adjustments, ensuring stable and efficient operation of the equipment.

[0013] Compared with the prior art, the beneficial effect of the present invention is that by using the clamp of the present invention, the liner can be fixed and positioned more accurately, thereby improving the accuracy of end trimming.

[0014] The fixture design makes the end trimming process of the liner more convenient, reduces the need for manual operation, and thus speeds up the processing.

[0015] Operator safety is improved by reducing the need for direct manual manipulation of the liner for trimming.

[0016] The use of the clamp reduces the operator's hand-held operation of the liner and reduces labor intensity.

[0017] The fixture design allows for processing of bushings of different sizes, improving the adaptability and flexibility of the equipment.

[0018] Through precise processing, the transformer assembly compensation can be ensured to be more accurate, thereby improving the overall maintenance performance of the transformer.

[0019] The structural design of the clamp helps to simplify the maintenance of the equipment because its design reduces the number of wearing parts and facilitates replacement and adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a main schematic diagram of the utility model;

[0021] Figure 2 It is a side view schematic diagram of the utility model;

[0022] Figure 3 It is a top view schematic diagram of the arc-shaped clamping surface of the utility model.

[0023] In the figure: 1. outer frame; 2. guide rod; 3. mounting frame; 4. cantilever pin; 5. outer clamping plate; 6. cam bearing follower; 7. threaded rod; 8. tapered head; 9. guide shaft; 10. pin plate; 11. first rectangular coil spring; 12. outer cylinder; 13. mounting plate; 14. second rectangular coil spring; 15. dry bushing; 16. bushing; 17. arc-shaped clamping surface; 17-1, anti-slip layer; 18. auxiliary wrench. DETAILED DESCRIPTION

[0024] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0025] See also Figure 1-3The utility model provides a technical solution: a fixture for liner processing, which is mainly composed of multiple key components, including an outer frame 1, a guide rod 2, a mounting frame 3, a cantilever pin 4, an outer clamping plate 5, a cam bearing follower 6, a threaded rod 7 and a tapered head 8. The outer frame 1 is designed as a door-type structure, which is not only beautiful but also can provide a stable installation foundation and performance. There are two guide rods 2, which run horizontally between the two longitudinal plates of the outer frame 1, ensuring the guiding accuracy of the device during use. The mounting frame 3 is arranged between the two guide rods 2, providing a stable installation platform for other components, thereby ensuring the stability and reliability of the entire device.

[0026] Cantilever pins 4 are inserted into the inner wall of mounting frame 3. Their primary function is to support and secure outer clamps 5. Two outer clamps 5 are hinged relative to each other on cantilever pins 4, with their outer ends designed as external clamps to facilitate clamping and securing bushing 16. This design ensures greater flexibility and stability when clamping bushing 16. Two cam bearing followers 6 are also present, one at the inner end of each outer clamp 5. Their primary function is to achieve precise clamping and releasing, thereby ensuring the precise position and stability of bushing 16 during processing.

[0027] The threaded rod 7 and tapered head 8 are key components of the fixture, performing both adjustment and positioning functions within the fixture. The threaded rod 7 precisely adjusts the various components of the fixture to accommodate bushings 16 of varying sizes and shapes. The tapered head 8 precisely positions the bushing 16, ensuring its accurate position during machining. The entire fixture design takes into account both machining accuracy and ease of operation, ensuring efficient and stable operation during bushing machining.

[0028] Threaded rod 7 runs through the horizontal plate of outer frame 1 and is used to adjust and fix the position of bushing 16. Conical head 8 is set at the inner end of threaded rod 7 and is located between the two cam bearing followers 6. Its inclined surface abuts against both cam bearing followers 6, ensuring uniform distribution of clamping force.

[0029] In order to further improve the stability of the device and the convenience of operation, a guide shaft 9 is also provided on the outer frame 1, and the guide shaft 9 also passes through the outer clamping plate 5, and a strip groove for passing the guide shaft 9 is provided on the outer clamping plate 5 to facilitate the free sliding of the guide shaft 9.

[0030] Two pin plates 10 are provided on the guide shaft 9, each located outside the two outer clamping plates 5, to further secure and stabilize the positions of the outer clamping plates 5. A first rectangular coil spring 11 is also provided between the pin plates 10 and the outer clamping plates 5 on the corresponding side. This spring provides a certain elastic force, giving the outer clamping plates 5 a certain degree of resilience when clamping the bushing 16, thereby improving the stability and reliability of the clamping.

[0031] The outer frame 1 is also equipped with two outer cylinders 12, which are connected by a mounting plate 13 to enhance the overall strength and stability of the device. A second rectangular coil spring 14 is sleeved around the guide rod 2. This second rectangular coil spring 14 is located between the inner wall of the outer frame 1 and the outer wall of the mounting frame 3, providing a resilient force for the guide rod 2 and ensuring good return performance during movement.

[0032] Cantilever pin 4 is also equipped with a dry bushing 15, the inner end of which abuts the inner end of outer clamp 5 to reduce wear and increase service life. Outer clamp 5 is clamped to the inner wall of bushing 16, and the rear end of bushing 16 is equipped with a flange to facilitate fixing and positioning bushing 16.

[0033] The outer end of the outer clamping plate 5 is provided with an arc-shaped clamping surface 17, and the outer end of the arc-shaped clamping surface 17 is bonded with an anti-slip layer 17-1. The anti-slip layer 17-1 contacts the inner wall of the liner 16, so that the two outer clamping plates 5 can clamp and fix the liner 16.

[0034] To facilitate manual adjustment of the threaded rod 7, the designers have added auxiliary levers 18 to the outer end of the rod. Four of these levers 18 are strategically arranged in a circular array. This design allows the operator to easily grasp and rotate the rod 7, thereby precisely tightening and loosening the bushing 16. This structure allows for easier and more accurate adjustments, ensuring stable and efficient operation of the equipment.

[0035] Working Principle: When the utility model is working, the outer frame 1 is the main structure of the entire fixture, with a door-shaped shape, providing a stable platform. The guide rod 2 ensures the smooth movement of the mounting frame 3 and the outer clamping plate 5, maintaining its stability and accuracy during the processing.

[0036] The mounting frame 3 is located between the guide rods 2 and provides a mounting position for the cantilever pin 4. The cantilever pin 4 is inserted into the inner wall of the mounting frame 3, supporting the outer card plate 5 and allowing it to rotate around the pin shaft.

[0037] The outer clamping plate 5 is hinged by the cantilever pin 4, and the outer clamping head at the outer end is used to clamp the bushing 16. The cam bearing follower 6 cooperates with the outer clamping plate 5 to control the opening and closing of the outer clamping plate by the rotation of the cam.

[0038] Threaded rod 7 passes through the horizontal plate of outer frame 1. By rotating the threaded rod, the position of tapered head 8 can be adjusted, thereby adjusting the clamping force of outer clamping plate 5. Tapered head 8 is located between two cam bearing followers 6, and the inclined surface abuts against the cam bearing followers to provide uniform clamping force.

[0039] The guide shaft 9 and the pin plate 10 ensure smooth movement of the outer clamping plate 5, and a reset force is provided by the first rectangular coil spring 11. The outer cylinder 12 and the mounting plate 13 connect the two outer cylinders to provide additional support and stability.

[0040] A second rectangular coil spring 14 is located between the guide rod 2 and the mounting frame 3 to provide a reset force to ensure stable movement of the guide rod. A dry bushing 15 is located on the cantilever pin 4 to reduce wear and improve smoothness of movement.

[0041] The outer clamping plate 5 is clamped on the inner wall of the liner 16 for fixing the liner so as to be processed. The auxiliary pull piece 18 is located at the outer end of the threaded rod 7 to facilitate the operator to rotate the threaded rod for adjustment.

[0042] Through the interaction of the above components, the clamp can stably fix the liner and allow the operator to adjust the clamping force by rotating the threaded rod 7, thereby ensuring the stability and accuracy of the liner during processing.

[0043] In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific circumstances.

[0044] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology, and the circuit connection adopts the conventional connection method in the existing technology, which will not be described in detail here.

[0045] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A fixture for processing a liner, characterized in that: include: An outer frame (1) is door-shaped; Two guide rods (2) are provided, each of which is arranged to extend transversely through two longitudinal plates of the outer frame (1); A mounting frame (3) is provided between the two guide rods (2); A cantilever pin (4) is inserted into the inner wall of the mounting frame (3); Two outer clamping plates (5) are hinged to the cantilever pin (4) in opposite directions, and the outer ends of the outer clamping plates are outer clamping heads; Cam bearing followers (6), two in number, are respectively arranged at the inner ends of the outer clamping plates (5) on the corresponding sides; A threaded rod (7) passes through a horizontal plate provided on the outer frame (1); The conical head (8) is provided at the inner end of the threaded rod (7) and is located between the two cam bearing followers (6), and the inclined surface abuts against the two cam bearing followers (6).

2. A fixture for processing a liner according to claim 1, characterized in that: A guide shaft (9) is provided through the outer frame (1), and the guide shaft (9) also passes through the outer clamping plate (5). The outer clamping plate (5) is provided with a strip-shaped notch for passing through the guide shaft (9).

3. A fixture for processing a liner according to claim 2, characterized in that: The guide shaft (9) is provided with a pin plate (10), and the number of the pin plates (10) is two, and both are located outside the two outer clamping plates (5).

4. A fixture for processing a liner according to claim 3, characterized in that: A first rectangular coil spring (11) is provided between the pin plate (10) and the outer clamping plate (5) on the corresponding side.

5. The fixture for processing a liner according to claim 1, characterized in that: The outer frame (1) is provided with an outer cylinder (12), the number of the outer cylinders (12) is two, and the two outer cylinders (12) are connected via a mounting plate (13).

6. The fixture for processing a liner according to claim 1, characterized in that: A second rectangular coil spring (14) is sleeved on the guide rod (2), and the second rectangular coil spring (14) is located between the inner wall surface of the outer frame (1) and the outer wall surface of the installation frame (3).

7. The fixture for processing a liner according to claim 1, characterized in that: The cantilever pin (4) is also provided with a dry bushing (15), and the inner end of the dry bushing (15) abuts against the inner end of the outer clamping plate (5).

8. The fixture for processing a liner according to claim 1, characterized in that: The outer clamping plate (5) is clamped on the inner wall of the liner (16), and a flange is provided at the tail end of the liner (16).

9. A fixture for processing a liner according to claim 8, characterized in that: The outer end of the outer clamping plate (5) is provided with an arc-shaped clamping surface (17), and the outer end of the arc-shaped clamping surface (17) is provided with an anti-slip layer (17-1). The anti-slip layer (17-1) abuts against the inner wall of the liner (16), so that the two outer clamping plates (5) can clamp and fix the liner (16).

10. The fixture for processing a liner according to claim 1, characterized in that: The outer end of the threaded rod (7) is provided with an auxiliary blade (18), and the number of the auxiliary blades (18) is 4 and they are arranged in a ring array.

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