An anti-deformation fixture for flywheel housing machining

Abstract

This invention provides an anti-deformation fixture for flywheel housing processing, including a positioning plate. The upper end of the positioning plate has multiple inwardly extending horizontal slide rails. Hollow sliding clamping components are slidably connected to the horizontal slide rails. A threaded drive shaft is rotatably connected to the horizontal slide rails. The sliding clamping component has a threaded sleeve threadedly connected to the threaded drive shaft. Multiple strip-shaped grooves are provided inside the sliding clamping component. Multiple positioning holes, corresponding to the strip-shaped grooves, are opened at the inner end of the sliding clamping component. Sliding clamping strips that can pass through the positioning holes are slidably connected to the strip-shaped grooves. A positioning pressure strip for pressing down on the sliding clamping strips is slidably connected above the sliding clamping strips inside the sliding clamping component. A threaded connection hole is opened at the upper end of the sliding clamping component. A threaded adjusting shaft extending out of and threadedly connected to the positioning pressure strip is rotatably connected to the threaded connection hole. This invention can adaptively fit the shape of the flywheel housing's outer wall, making the clamping force more uniform and effectively preventing flywheel housing deformation.

Description

Technical Field

[0001] This utility model belongs to the field of parts processing technology and relates to an anti-deformation fixture for processing flywheel shells. Background Technology

[0002] As a key component of the engine transmission system, the flywheel housing is typically formed from cast iron or cast steel using a casting process. Its main function is to mount the flywheel and protect the clutch assembly. Therefore, after casting, it requires a series of machining operations to ensure assembly accuracy and operational stability with other engine components. Specifically, critical areas such as the mounting surface, locating holes, and mating surfaces of the flywheel housing require high-precision milling to meet stringent dimensional and geometric tolerance requirements.

[0003] In actual machining, the flywheel housing needs to be fixed to the machine tool table using a fixture to facilitate smooth milling. However, since the flywheel housing is usually a complex casting with thin walls, its overall rigidity is poor, especially in its unprocessed state after casting, where its shape is irregular and its surface has certain casting stress. Therefore, during the clamping process, it is very easy for elastic or plastic deformation to occur due to uneven local stress, which in turn affects the subsequent machining accuracy and assembly performance.

[0004] Currently, conventional clamping tools mostly employ mechanical pressure plates or hydraulic clamps, whose clamping points typically act on a localized area of ​​the flywheel housing sidewall. Due to the thin and irregular shape of the flywheel housing, traditional clamps struggle to achieve a uniformly distributed clamping force, often applying concentrated pressure only to one or a few points on the flywheel housing sidewall. This clamping method not only easily leads to localized stress concentration at the clamping points but can also cause minor deformations of the overall structure, and in severe cases, may even cause the flywheel housing to crack or become unusable. Utility Model Content

[0005] The purpose of this utility model is to provide an anti-deformation clamp for flywheel housing processing, which can adaptively fit the shape of the outer wall of the flywheel housing, making the clamping force more uniform and effectively preventing flywheel housing deformation.

[0006] To solve the above technical problems, this utility model provides an anti-deformation fixture for flywheel housing processing, including a positioning plate. The upper end of the positioning plate is provided with at least two horizontal slide rails that are circumferentially distributed and both facing inward. The horizontal slide rails are slidably connected to hollow sliding clamping members. Each horizontal slide rail is rotatably connected to a threaded drive shaft arranged along its length direction. Each sliding clamping member is provided with a threaded sleeve that is threadedly connected to the corresponding threaded drive shaft. Each sliding clamping member is provided with multiple strip-shaped grooves arranged along the length direction of the corresponding horizontal slide rail. Each sliding clamping member has multiple positioning through holes at one end facing the middle of the positioning plate that correspond one-to-one with the corresponding strip-shaped grooves. Each strip-shaped groove is slidably connected to a sliding clamping strip that can pass through the corresponding positioning hole.

[0007] Each sliding clamp has a slidably connected positioning pressure strip at the upper part near the corresponding positioning through hole. The lower end of each positioning pressure strip has a positioning pressure groove that corresponds one-to-one with the internal sliding clamp. The upper end of each sliding clamp has a threaded connection hole above the corresponding positioning pressure strip. Each positioning pressure strip is rotatably connected to a threaded adjustment shaft that extends out of the corresponding threaded connection hole and is threadedly connected to it. The upper end of each sliding clamp has a displacement groove that extends along its length. Each sliding clamp has a slidably connected strip-shaped push plate that can push the corresponding sliding clamp out of the corresponding positioning through hole. Each strip-shaped push plate is connected to an operating slider that extends out of the corresponding displacement groove and is slidably connected to it.

[0008] By adopting the above technical solution, the flywheel housing to be processed is placed on the positioning plate and located in the middle of the horizontal slide rail. First, the slider is operated to push the strip pusher plate to move. The strip pusher plate pushes the sliding clamping strip to extend by the same length. The displacement drive handwheel is rotated to drive the sliding clamping component to move inward, so that the sliding clamping component is close to the flywheel housing. The sliding clamping strip gradually contacts the outer wall of the flywheel housing. After contacting the outer wall of the flywheel housing, the sliding clamping strip retracts adaptively according to its shape, so that all the sliding clamping strips can fit the outer wall of the flywheel housing in an arc shape. Then, the downward drive handwheel is rotated to drive the positioning pressure strip to move downward through the threaded adjustment shaft. The positioning pressure groove presses down on the corresponding sliding clamping strip, fixing the sliding clamping strip firmly so that it cannot move. Then, the displacement drive handwheel is used to drive the sliding clamping component to move inward, so that the sliding clamping strip firmly clamps the flywheel housing.

[0009] The present invention is further configured such that each horizontal slide rail is provided with a sliding connection groove along its length, and each threaded sleeve slides within the corresponding sliding connection groove.

[0010] The present invention is further configured such that each horizontal slide rail is provided with a limiting slide groove arranged along its length direction, and the lower end of each sliding clamp is provided with a limiting slide bar that is slidably connected to the corresponding limiting slide groove.

[0011] The present invention is further configured such that each horizontal slide rail is provided with a connecting plate at one end away from the center of the positioning plate, each threaded drive shaft is rotatably connected to the corresponding connecting plate, and one end of each threaded drive shaft extends out of the corresponding connecting plate and is provided with a displacement drive handwheel.

[0012] The present invention is further provided that an elastic rubber block is provided at the top of each positioning groove.

[0013] The present invention is further configured such that the height of each sliding clamping bar is higher than the depth of the corresponding strip groove.

[0014] The present invention is further provided with a downward drive handwheel at the upper end of each threaded adjustment shaft.

[0015] Compared with the prior art, this utility model utilizes the self-retractable sliding clamping strip on the sliding clamping component, which can adaptively fit the outer wall of the flywheel shell. Furthermore, the position of the sliding clamping strip can be fixed by the positioning groove on the positioning pressure strip, so that multiple sliding clamping strips can work together to firmly clamp the flywheel shell, resulting in a more uniform clamping force and effectively preventing deformation of the flywheel shell. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 Used to demonstrate the connection between the sliding clamp and the horizontal slide rail;

[0018] Figure 3 This is an exploded view used to show the connection between the sliding clamp and the horizontal slide rail;

[0019] Figure 4 It is a partial sectional view used to show the positioning pressure strip and strip push plate inside the sliding clamping component;

[0020] Figure 5 This is a partial sectional view used to show the internal structure of the sliding clamp;

[0021] Figure 6 Used to display the positioning groove on the positioning strip.

[0022] The components are as follows: 1. Positioning plate; 2. Horizontal slide rail; 3. Sliding clamping component; 4. Threaded drive shaft; 5. Sliding connecting groove; 6. Threaded sliding sleeve; 7. Connecting plate; 8. Displacement drive handwheel; 9. Limiting slide groove; 10. Limiting slide bar; 11. Strip slide groove; 12. Positioning through hole; 13. Sliding clamping bar; 14. Positioning pressure bar; 15. Positioning pressure groove; 16. Elastic rubber block; 17. Threaded connecting hole; 18. Threaded adjusting shaft; 19. Downward drive handwheel; 20. Displacement slide groove; 21. Strip push plate; 22. Operating slider. Detailed Implementation

[0023] The following detailed description, in conjunction with the accompanying drawings and specific embodiments, provides a further detailed explanation of the anti-deformation fixture for flywheel housing processing proposed in this utility model. The advantages and features of this utility model will become clearer from the following description. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, used only to facilitate and clarify the illustration of the embodiments of this utility model. The same or similar reference numerals in the drawings represent the same or similar parts.

[0024] Example, refer to Figure 1-6 A deformation-resistant clamp for flywheel housing processing includes a positioning plate 1. The upper end of the positioning plate 1 has two circumferentially distributed horizontal slide rails 2, both pointing inwards. More horizontal slide rails 2 can be selected for better clamping effect. Each horizontal slide rail 2 is slidably connected to a hollow sliding clamping component 3. Each horizontal slide rail 2 is rotatably connected to a threaded drive shaft 4 along its length. Each horizontal slide rail 2 has a sliding connection groove 5 along its length. Each sliding clamping component 3 has a threaded sleeve 6 that slides within the corresponding sliding connection groove 5 and is threadedly connected to the corresponding threaded drive shaft 4. A connecting plate 7 is provided at the end of each horizontal slide rail 2 furthest from the center of the positioning plate 1. Each threaded drive shaft 4 is rotatably connected to the corresponding connecting plate 7. One end of each threaded drive shaft 4 extends out of the corresponding connecting plate 7 and is provided with a displacement drive handwheel 8. The displacement drive handwheel 8 can drive the threaded drive shaft 4 to rotate, ultimately driving the sliding clamping component 3 to move.

[0025] Each horizontal slide rail 2 has two limiting grooves 9 arranged along its length. The lower end of each sliding clamp 3 is provided with two limiting strips 10 that are slidably connected to the corresponding limiting grooves 9, making the sliding clamp 3 more stable during sliding. Each sliding clamp 3 is provided with multiple strip grooves 11 arranged along the length of the corresponding horizontal slide rail 2. Each sliding clamp 3 has multiple positioning through holes 12 at one end facing the middle of the positioning plate 1 that correspond one-to-one with the corresponding strip grooves 11. Each strip groove 11 is slidably connected with a sliding clamping strip 13 that can pass through the corresponding positioning through hole. The height of each sliding clamping strip 13 is higher than the depth of the corresponding strip groove 11, so that the upper part of the sliding clamping strip 13 can extend out of the corresponding strip groove 11.

[0026] Each sliding clamp 3 has a slidable positioning pressure strip 14 that can slide up and down at one end near the corresponding positioning through hole 12 and above the corresponding sliding clamp 13. The lower end of each positioning pressure strip 14 is provided with a positioning pressure groove 15 that corresponds one-to-one with the internal sliding clamp 13. The top of each positioning pressure groove 15 is provided with an elastic rubber block 16 to increase friction and further fix the sliding clamp 13. The upper end of each sliding clamp 3 is provided with a threaded connection hole 17 above the corresponding positioning pressure strip 14. Each positioning pressure strip 14 is rotatably connected to a threaded adjustment shaft 18 that extends out of the corresponding threaded connection hole 17 and is threadedly connected to it. The upper end of each threaded adjustment shaft 18 is provided with a downward drive handwheel 19. Each sliding clamp 3 has a displacement groove 20 that communicates with its interior and is arranged along its length at its upper end. Each sliding clamp 3 has a strip-shaped push plate 21 that is slidably connected to the end of the corresponding sliding clamp 13 away from the corresponding positioning through hole 12. Each strip-shaped push plate 21 can push the corresponding sliding clamp 13 to move. Each strip-shaped push plate 21 is connected to an operating slider 22 that extends out of the corresponding displacement groove 20 and is slidably connected to it.

[0027] Usage: Place the flywheel housing to be processed on the positioning plate 1, located in the middle of the horizontal slide rail 2. First, push the strip pusher 21 to move by operating the slider 22. The strip pusher 21 pushes the sliding clamping strip 13 to extend by the same length. Rotate the displacement drive handwheel 8 to drive the sliding clamping member 3 to move inward, so that the sliding clamping member 3 is close to the flywheel housing. The sliding clamping strip 13 gradually contacts the outer wall of the flywheel housing. After contacting the outer wall of the flywheel housing, the sliding clamping strip 13 retracts adaptively according to its shape, so that all the sliding clamping strips 13 can fit the outer wall of the flywheel housing in an arc shape. Then, turn the downward drive handwheel 19 to drive the positioning pressure strip 14 to move downward through the threaded adjustment shaft 18, so that the positioning pressure groove 15 presses down on the corresponding sliding clamping strip 13. With the help of the elastic rubber block 16, the sliding clamping strip 13 is fixed firmly and cannot move. Then, drive the sliding clamping member 3 to move inward by the displacement drive handwheel 8, so that the sliding clamping strip 13 can firmly clamp the flywheel housing.

[0028] It should also be noted that all terms such as "set up" and similar descriptive words in this application (especially the specification) indicate that two structures have or exist a connection relationship. However, the specific means by which the two are connected are not limited in detail, and are usually conventional connection methods. That is, the means should be understood as prior art and do not need to be elaborated. For example, "m is set up with n" only indicates that structure m has structure n, and whether the two are connected by welding, riveting, adhesive, or integral molding is within the scope of protection of this application. Similarly, "x is rotatably set up with y" only indicates that y and x can rotate relative to each other, and whether the two are connected by a bearing, or whether y directly passes through x and is rotatably connected to x, or other feasible methods, are all within the scope of protection of this application.

[0029] The above description is only a description of the preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the claims.

Claims

1. A deformation-resistant fixture for processing flywheel housings, comprising a positioning plate (1), characterized in that, The upper end of the positioning plate (1) is provided with at least two horizontal slide rails (2) that are circumferentially distributed and both are inwardly arranged. The horizontal slide rails (2) are slidably connected to hollow sliding clamping parts (3). Each horizontal slide rail (2) is rotatably connected to a threaded drive shaft (4) arranged along its length direction. Each sliding clamping part (3) is provided with a threaded sleeve (6) that is threadedly connected to the corresponding threaded drive shaft (4). Each sliding clamping part (3) is provided with multiple strip grooves (11) arranged along the length direction of the corresponding horizontal slide rail (2). Each sliding clamping part (3) has multiple positioning through holes (12) that correspond one-to-one with the corresponding strip grooves (11) at one end facing the middle of the positioning plate (1). Each strip groove (11) is slidably connected to a sliding clamping strip (13) that can pass through the corresponding positioning. Each sliding clamp (3) has a slidably connected upper part near the corresponding positioning through hole (12) with a positioning pressure strip (14) that can slide up and down. The lower end of each positioning pressure strip (14) is provided with a positioning pressure groove (15) that corresponds one-to-one with the internal sliding clamp (13). The upper end of each sliding clamp (3) is provided with a threaded connection hole (17) above the corresponding positioning pressure strip (14). Each positioning pressure strip (14) is rotatably connected with a threaded adjustment shaft (18) that extends out of the corresponding threaded connection hole (17) and is threadedly connected to it. The upper end of each sliding clamp (3) is provided with a displacement groove (20) that is provided along its length direction. Each sliding clamp (3) has a slidably connected strip-shaped push plate (21) that can push the corresponding sliding clamp (13) out of the corresponding positioning through hole (12). Each strip-shaped push plate (21) is connected with an operating slider (22) that extends out of the corresponding displacement groove (20) and is slidably connected to it.

2. The anti-deformation fixture for processing a flywheel housing according to claim 1, characterized in that, Each horizontal slide rail (2) is provided with a sliding connection groove (5) along its length direction, and each threaded sleeve (6) slides in the corresponding sliding connection groove (5).

3. The anti-deformation fixture for processing a flywheel housing according to claim 1, characterized in that, Each horizontal slide rail (2) is provided with a limiting slide groove (9) arranged along its length direction, and each sliding clamp (3) is provided with a limiting slide bar (10) at its lower end that is slidably connected to the corresponding limiting slide groove (9).

4. The anti-deformation fixture for processing a flywheel housing according to claim 1, characterized in that, Each horizontal slide rail (2) is provided with a connecting plate (7) at one end away from the center of the positioning plate (1), each threaded drive shaft (4) is rotatably connected to the corresponding connecting plate (7), and one end of each threaded drive shaft (4) extends out of the corresponding connecting plate (7) and is provided with a displacement drive handwheel (8).

5. The anti-deformation fixture for processing a flywheel housing according to claim 1, characterized in that, Each positioning groove (15) has an elastic rubber block (16) at the top.

6. The anti-deformation fixture for processing a flywheel housing according to claim 1, characterized in that, The height of each sliding clamping bar (13) is higher than the depth of the corresponding strip groove (11).

7. The anti-deformation fixture for processing a flywheel housing according to claim 1, characterized in that, Each threaded adjusting shaft (18) is equipped with a pressure drive handwheel (19) at its upper end.

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