Shape correcting tool for thin-wall shell of engine combustion chamber

Abstract

The utility model discloses a shape correction tool for a thin-wall shell of an engine combustion chamber, relates to the technical field of shape correction of thin-wall shells, and can solve the problem that a shape correction tool in the prior art is poor in shape correction effect on a cylindrical thin-wall shell. The shape correcting tool for the thin-wall shell of the engine combustion chamber comprises a fixed base, a shape correcting assembly and a movable support assembly, and the shape correcting assembly is installed on the fixed base through the movable support assembly; the shape correcting assembly comprises a circular positioning clamping ring, a plurality of shape correcting clamping plates and a plurality of jacking pieces used for driving the shape correcting clamping plates to move in the radial direction of the positioning clamping ring. The plurality of shape correcting clamping plates are arc-shaped and are distributed in the positioning clamping ring along the circumferential direction of the positioning clamping ring; the number of the jacking pieces is at least equal to that of the shape correcting clamping plates, the jacking pieces penetrate through the positioning clamping ring and are movably connected to the positioning clamping ring, and one ends of the jacking pieces are connected to the shape correcting clamping plates.

Description

Technical Field

[0001] This utility model relates to the field of thin-walled shell shaping technology, specifically to a tooling for shaping a thin-walled shell of an engine combustion chamber. Background Technology

[0002] The overall shape of an engine combustion chamber is typically a thin-walled cylindrical shell. In its design and manufacturing, thinner walls are preferable while ensuring overall structural strength. However, thinner walls generally result in lower strength. Furthermore, during the force-spinning process of manufacturing a thin-walled cylindrical shell, as well as during welding and heat treatment, it is often difficult to ensure roundness and straightness requirements. Therefore, post-manufacturing reshaping is necessary to meet various requirements such as assembly accuracy, aerodynamic performance, and structural stability.

[0003] Existing tooling for straightening cylindrical thin-walled shells generally uses a snap-fit ​​design. The snap-fit ​​straightening component is attached to the cylindrical thin-walled shell, then locked, and then subjected to heat aging treatment. After removal, the roundness is checked to see if it meets the requirements. In this straightening method, the contact between the straightening structure and the cylindrical thin-walled shell is a semi-circular pressing contact, which does not provide a good straightening effect. It requires repeated rounds of straightening, and in fact, deformed areas that do not meet the requirements appear in the thin-walled shell area corresponding to the snap-fit ​​gap.

[0004] Based on the above background, the inventors designed a tooling for straightening the thin-walled shell of an engine combustion chamber, which solves at least one of the above problems, and thus, this application is hereby filed. Utility Model Content

[0005] The purpose of this application is to provide a shaping fixture for thin-walled shells of engine combustion chambers, which solves the problem that existing shaping fixtures are not effective for shaping cylindrical thin-walled shells.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following solution:

[0007] This application provides a tooling for straightening a thin-walled shell of an engine combustion chamber, including a fixed base and a straightening assembly, as well as a movable support assembly, wherein the straightening assembly is mounted on the fixed base via the movable support assembly;

[0008] The alignment assembly includes a circular positioning clamping ring and several alignment clamping plates, as well as several pressing members for driving the alignment clamping plates to move radially along the positioning clamping ring.

[0009] Several alignment clamps are all arc-shaped and distributed around the circumference of the positioning clamp ring within the positioning clamp ring;

[0010] The number of top pressing components is at least equal to the number of straightening clamps. The top pressing components are set through the positioning clamp and are movably connected to the positioning clamp. One end of the top pressing component is connected to the straightening clamp.

[0011] Optionally, the number of the alignment clamps is even, the alignment clamps are evenly distributed along the circumference of the positioning clamp, and the sum of the central angles corresponding to the arcs where the alignment clamps are located is 360°.

[0012] The number of pressing components is the same as the number of straightening clamps, and the pressing components are connected to the middle position of the straightening clamps.

[0013] Optionally, the number of the alignment clamps and top pressing components is 6 to 16.

[0014] Optionally, the pressing component is a pressing bolt, which passes through the positioning clamp and is threadedly connected to it.

[0015] Optionally, the alignment assembly further includes several top-compression springs disposed between the alignment clamping plate and the positioning clamping ring, with the several top-compression springs evenly distributed along the circumference of the positioning clamping ring.

[0016] Optionally, the alignment component is fixedly connected to the movable support component;

[0017] The fixed base is elongated and has multiple alignment components and movable support components distributed on it. The central axes of the multiple alignment components coincide and are arranged parallel to the length direction of the fixed base.

[0018] Optionally, the movable support assembly includes a movable support body and locking bolts for locking the movable support body onto the fixed base;

[0019] The bottom of the movable support body is provided with an installation groove, and the movable support body is installed on the fixed base through the installation groove and slidably connected to it.

[0020] The locking bolt passes through the main body of the movable support and is threaded to it. The end of the locking bolt away from the bolt head presses against the fixed base.

[0021] Optionally, the width of the mounting groove is the same as the width of the fixed base, and the height of the mounting groove is the same as the thickness of the fixed base;

[0022] The movable support body is also provided with extended limiting parts located on both sides of the bottom of the mounting groove. The movable support body is fastened to the fixed base through the mounting groove and the extended limiting parts.

[0023] Optionally, the top of the fixed base is provided with a recessed groove;

[0024] The fixed base is also provided with several drainage holes distributed in the recessed groove.

[0025] Optionally, the bottom of the fixed base is provided with a reinforcing strip.

[0026] The beneficial effects of this utility model are:

[0027] I. This application, through the cooperation of a fixed base and a straightening component, as well as a movable support component, allows for the marking of the out-of-tolerance roundness section of the thin-walled shell. The tool can then be moved to the marked area and targeted pressure can be applied to the marked area for straightening. This effectively solves the problem that the straightening fixtures in the prior art are not effective for straightening cylindrical thin-walled shells.

[0028] Second, the recessed groove and drain hole provided in the fixed base of this application can collect and centrally discharge the quenching liquid during the quenching process, thus avoiding pollution to the tooling calibration environment. Attached Figure Description

[0029] Figure 1 This is a three-dimensional structural diagram of Embodiment 1 of this application.

[0030] Figure 2 This is a schematic diagram of the main structure of Embodiment 1 of this application.

[0031] Figure 3 This is a schematic diagram of the structure of the alignment component in Embodiment 2 of this application.

[0032] Explanation of reference numerals in the attached figures:

[0033] 1-Fixed base, 11-Recessed groove, 12-Drain hole, 13-Reinforcing strip, 2-Shaping assembly, 21-Positioning clamp, 22-Shaping clamp plate, 23-Top pressure component, 3-Moving support assembly. 31-Support body, 311-Mounting groove, 312-Extension limiting part, 32-Locking bolt, 4-Top pressure spring. Detailed Implementation

[0034] The present invention will be further described in detail below with reference to the embodiments and accompanying drawings, but the implementation of the present invention is not limited thereto.

[0035] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inner", "outer", "front", "rear", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0036] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "have," "install," "connect," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0037] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0038] Example 1:

[0039] like Figure 1 and Figure 2 As shown, this embodiment provides a tooling for straightening a thin-walled shell of an engine combustion chamber, including a fixed base 1, a straightening assembly 2, and a movable support assembly 3. The straightening assembly 2 is mounted on the fixed base 1 via the movable support assembly 3.

[0040] The alignment component 2 includes a circular positioning clamping ring 21 and several alignment clamping plates 22, as well as several top pressing members 23 for driving the alignment clamping plates 22 to move radially along the positioning clamping ring 21.

[0041] Several alignment clamps 22 are all arc-shaped and distributed around the positioning clamp 21;

[0042] The number of pressing members 23 is at least equal to the number of straightening clamps 22. The pressing members 23 are set through the positioning clamps 21 and are movably connected to the positioning clamps 21. One end of the pressing members 23 is connected to the straightening clamps 22.

[0043] In this embodiment, by setting a fixed base 1, a straightening component 2, and a movable support component 3, the straightening component 2 can move along the length of the fixed base 1. After the thin-walled shell is detected to have a roundness deviation and is marked, it can be directly moved to the marked position area via the movable support component 3. Then, the straightening component 2 needs to be adjusted by the pressing component 23, so that the pressing component 23 presses the straightening clamp 22 radially along the positioning clamp ring 21, so that the straightening clamp 22 presses the area where the marked position is located and continuously applies the pressing force. During the straightening process, after the deformation is rounded, the outer circle is pressed by about 2 to 4 mm more, so that the marked area of ​​the thin-walled shell will have a reverse deformation. The specific compression amount is based on the actual situation. After the thin-walled shell is fixed, the thin-walled shell and the tooling of this application are sent into the heating furnace for heating, followed by air cooling, quenching and tempering, thus completing the entire straightening process of the thin-walled shell.

[0044] Therefore, this embodiment, by setting up a fixed base 1 and a straightening component 2, and a movable support component 3 in cooperation, can move to the marked position area after marking the roundness deviation section of the thin-walled shell, and apply targeted pressure to the marked position for straightening. This can effectively solve the problem that the straightening fixture in the prior art has a poor straightening effect on cylindrical thin-walled shells.

[0045] Specifically, in this embodiment, the number of the straightening clamps 22 is even, the straightening clamps 22 are evenly distributed along the circumference of the positioning clamp ring 21, and the sum of the central angles corresponding to the arcs where the straightening clamps 22 are located is 360°.

[0046] The number of pressing members 23 is the same as the number of straightening clamps 22. The pressing members 23 are connected to the middle position of the straightening clamps 22, so that when the straightening clamps 22 are pressed by the pressing members 23, the pressure of the straightening clamps 22 pressing the thin-walled shell is more uniform.

[0047] Specifically, in this embodiment, the number of the straightening clamp 22 and the top pressing component 23 is 8. The technicians can set the number of the straightening clamp 22 and the top pressing component 23 to other numbers as needed, such as 6, 10, etc., which will not be elaborated here.

[0048] Specifically, in this embodiment, the top-pressing component 23 is a top-pressing bolt. The top-pressing bolt passes through the positioning clamping ring 21 and is threadedly connected to it, so that the calibration operator can directly drive the top-pressing bolt to rotate on the positioning clamping ring 21, thereby making the top-pressing bolt press against the calibration clamping plate 22, which is convenient for the calibration operator to use.

[0049] Specifically, in this embodiment, the alignment component 2 is fixedly connected to the movable support component 3;

[0050] The fixed base 1 is elongated, and multiple straightening components 2 and movable support components 3 are distributed on the fixed base 1. The central axes of the multiple straightening components 2 coincide and are arranged parallel to the length direction of the fixed base 1. By setting multiple straightening components 2 and movable support components 3, the straightening fixture of this embodiment can straighten multiple round segments with out-of-tolerance roundness of the cylindrical thin-walled shell at one time, thereby improving the straightening efficiency and avoiding repeated straightening.

[0051] Specifically, in this embodiment, the movable support assembly 3 includes a movable support body and a locking bolt for locking the movable support body onto the fixed base 1;

[0052] The bottom of the movable support body is provided with an installation groove, and the movable support body is installed on the fixed base 1 through the installation groove and slidably connected to it.

[0053] The locking bolt passes through the main body of the movable support and is threaded to it. The end of the locking bolt away from the bolt head presses against the fixed base 1. By setting the movable support body that can slide on the fixed base 1 and the locking bolt for locking the movable support body on the fixed base 1, the calibration operator can move and fix the thin-walled shell according to the marked position after the inspection, and perform targeted calibration.

[0054] Specifically, in this embodiment, the width of the mounting groove is the same as the width of the fixed base 1, and the height of the mounting groove is the same as the thickness of the fixed base 1.

[0055] The movable support body is also provided with extended limiting parts on both sides of the bottom of the mounting groove. The movable support body is fastened to the fixed base 1 through the mounting groove and the extended limiting parts. By setting the extended limiting parts and by designing the size of the mounting groove, the movable support body is fastened to the fixed base 1. Since the fixed base 1 is provided with multiple straightening components 2 and movable support components 3, the above design can make the central axes of multiple straightening components 2 coincide, which is convenient for straightening the cylindrical thin-walled shell.

[0056] Specifically, in this embodiment, the top of the fixed base 1 is provided with a recessed groove 11;

[0057] The fixed base 1 is also provided with a number of drainage holes 12 distributed in the recessed groove 11, which collect and centrally discharge the quenching liquid during the quenching process to avoid polluting the tooling calibration environment.

[0058] Specifically, in this embodiment, a reinforcing strip 13 is provided at the bottom of the fixed base 1 to improve the overall strength of the fixed base 1.

[0059] Example 2:

[0060] like Figure 2 As shown, in this embodiment, the straightening component 2 further includes several top pressure springs disposed between the straightening clamping plate 22 and the positioning clamping ring 21, and the several top pressure springs are evenly distributed along the circumference of the positioning clamping ring 21.

[0061] By setting a top pressure spring, a certain top pressure can be applied at the position between the top pressure members 23, making the overall force on the straightening clamp 22 more uniform, thereby improving the uniformity of the top pressure of the straightening clamp 22 on the thin-walled shell and improving the straightening effect.

[0062] The remaining structures in this embodiment are the same as those in Embodiment 1 above, and will not be described again here.

[0063] It is understood that the above embodiments are merely exemplary implementations used to illustrate the principles of this utility model, and the utility model is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of this utility model, and these modifications and improvements are also considered to be within the protection scope of this utility model.

Claims

1. A tooling for straightening a thin-walled shell of an engine combustion chamber, characterized in that, It includes a fixed base (1) and a straightening assembly (2), as well as a movable support assembly (3), wherein the straightening assembly (2) is mounted on the fixed base (1) via the movable support assembly (3); The alignment component (2) includes a circular positioning clamp (21) and several alignment clamps (22), as well as several top pressing members (23) for driving the alignment clamps (22) to move radially along the positioning clamp (21); Several alignment clamps (22) are all arc-shaped and distributed around the positioning clamp (21) in the circumference of the positioning clamp (21); The number of top pressing parts (23) is at least equal to the number of straightening clamps (22). The top pressing parts (23) pass through the positioning clamp (21) and are movably connected to the positioning clamp (21). One end of the top pressing parts (23) is connected to the straightening clamp (22).

2. The engine combustion chamber thin-walled shell straightening fixture according to claim 1, characterized in that, The number of the straightening clamps (22) is even, and the straightening clamps (22) are evenly distributed along the circumference of the positioning clamps (21); The number of pressing parts (23) is the same as the number of straightening clamps (22), and the pressing parts (23) are pressed and connected to the middle position of the straightening clamps (22).

3. The engine combustion chamber thin-walled shell straightening fixture according to claim 2, characterized in that, The number of the alignment clamps (22) and the top pressing components (23) is 6 to 16.

4. The engine combustion chamber thin-walled shell shaping fixture according to claim 2, characterized in that, The top pressure member (23) is a top pressure bolt, which is set through the positioning clamp (21) and threadedly connected to it.

5. The engine combustion chamber thin-walled shell shaping fixture according to claim 2, characterized in that, The alignment component (2) also includes several top pressure springs disposed between the alignment clamp (22) and the positioning clamp (21), and the several top pressure springs are evenly distributed along the circumference of the positioning clamp (21).

6. The engine combustion chamber thin-walled shell shaping fixture according to claim 1, characterized in that, The alignment component (2) is fixedly connected to the movable support component (3); The fixed base (1) is long and narrow. Multiple alignment components (2) and movable support components (3) are distributed on the fixed base (1). The central axes of the multiple alignment components (2) coincide and are arranged parallel to the length direction of the fixed base (1).

7. The engine combustion chamber thin-walled shell straightening fixture according to claim 1, characterized in that, The movable support assembly (3) includes a movable support body and a locking bolt for locking the movable support body onto the fixed base (1); The bottom of the movable support body is provided with an installation groove, and the movable support body is installed on the fixed base (1) through the installation groove and slidably connected to it; The locking bolt passes through the main body of the movable support and is threaded to it. The end of the locking bolt away from the bolt head presses against the fixed base (1).

8. The engine combustion chamber thin-walled shell shaping fixture according to claim 7, characterized in that, The width of the mounting groove is the same as the width of the fixed base (1), and the height of the mounting groove is the same as the thickness of the fixed base (1). The movable support body is also provided with an extension limiting part located on both sides of the bottom of the mounting groove. The movable support body is fastened to the fixed base (1) through the mounting groove and the extension limiting part.

9. The engine combustion chamber thin-walled shell straightening fixture according to claim 1, characterized in that, The top of the fixed base (1) is provided with a recessed groove (11); The fixed base (1) is also provided with a number of drainage holes (12) distributed in the recessed groove (11).

10. A tooling for straightening a thin-walled engine combustion chamber shell according to claim 9, characterized in that, The bottom of the fixed base (1) is provided with a reinforcing strip (13).

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