Processing tool for inner wall of conical shell

Abstract

The utility model relates to the field of machining, concretely relates to a conical shell inner wall machining frock, including base and setting a plurality of compression components at the base top surface, the base top is equipped with the mounting groove, the mounting groove includes the conical section and the round section, the round section sets up the big end at the conical section, the one end away from the conical section of round section is equipped with the limit card slot, a plurality of compression components are divided and set up at the mounting groove both sides, are used for compressing the both sides edge of conical shell. The utility model sets up the composite mounting groove matched with the workpiece appearance on the base top, can realize the quick positioning and accurate clamping of the composite surface workpiece with the conical section and the round section with the rim strip, effectively solves the problem that the existing general fixture clamping is complicated, needs multiple adjustments.

Description

Technical Field

[0001] This utility model relates to the field of machining, and in particular to a tooling for machining the inner wall of a conical shell. Background Technology

[0002] In aerospace, precision instruments, and other fields, conical shell-shaped workpieces are a type of critical structural component. For example... Figure 1 As shown, a conical shell 1 has a conical portion 11. The larger end of the conical portion 11 has a circular portion 12, and a flange 13 is provided at the end of the circular portion 12, with a flange strip 14 protruding outwards. The end of the flange 13 also has a flange 15 extending towards the outer wall of the conical shell 1. During its manufacturing process, not only is it necessary to machine the outer surface or end face, but more importantly, it is crucial to perform precision machining on its inner wall or to machine various features on the inner wall to ensure its dimensional accuracy, shape tolerances, and assembly performance with other components.

[0003] Currently, there is a lack of specialized tooling for machining the inner wall of such conical shells with flanges. Existing general-purpose fixtures (such as V-blocks and indexing head combinations) are difficult to adapt to the composite surface of the workpiece's conical section and the circular section with flanges at the same time. The clamping process is cumbersome, requires multiple adjustments and alignments, is inefficient, and often lacks sufficient support rigidity, which can easily cause vibrations during machining and affect the machining quality.

[0004] Therefore, there is a lack of a special tooling in the prior art that can quickly, accurately, and stably clamp conical shell workpieces and especially optimize the accessibility of their inner wall machining. Utility Model Content

[0005] The purpose of this invention is to overcome the technical problem of the lack of special tooling in the prior art that can quickly, accurately and stably clamp conical shells with conical and circular segments, and especially optimize the accessibility of their inner wall processing, and to provide a tooling for processing the inner wall of conical shells.

[0006] This utility model provides a tooling for processing the inner wall of a conical shell, including a base and a plurality of clamping components disposed on the top surface of the base. The top of the base is provided with a mounting groove, which includes a conical section and a circular section. The circular section is disposed at the large end of the conical section, and a limiting groove is provided at the end of the circular section away from the conical section. The plurality of clamping components are disposed on both sides of the mounting groove for clamping the edges of the conical shell on both sides.

[0007] This utility model discloses a machining fixture for the inner wall of a conical shell. In use, the conical shell workpiece is placed in the mounting groove of the base, with its outer surface as a reference. The conical section of the workpiece is aligned with the conical section of the mounting groove, and the circular section at the larger end of the workpiece is aligned with the circular section of the mounting groove. Simultaneously, the flange at the end of the workpiece is embedded and abuts against the limiting groove, completing the initial positioning and axial limiting of the workpiece. The pressure plates of each clamping component are placed above the two edges of the workpiece to ensure that the clamping force is evenly applied to the workpiece. After the workpiece is reliably clamped, the machine tool spindle can drive the cutting tool to perform machining operations on the inner wall of the conical shell. Because the workpiece is fully supported by the mounting groove of the base through its entire outer surface and is firmly clamped, machining vibration can be effectively suppressed, ensuring the machining accuracy and quality of the inner wall.

[0008] Preferably, the clamping assembly includes a pressure plate, the pressure plate having a connecting hole and a screw hole, the screw hole being located on the side of the connecting hole away from the mounting groove, the connecting hole being fitted with a clamping bolt, and the base having corresponding bolt holes on both sides for mounting the clamping bolt, the screw holes being fitted with height adjustment screws.

[0009] By rotating the height adjustment screw, the downward pressure height of the pressure plate near the workpiece end can be finely adjusted to ensure that the clamping force is evenly applied to the edge of the workpiece. This prevents incomplete clamping or excessive local stress caused by manufacturing errors of the workpiece or tooling, thereby improving the reliability of clamping and the stability of the workpiece.

[0010] Preferably, the connecting hole is configured as an oblong hole, and the long axis of the oblong hole is set along the length direction of the pressure plate.

[0011] By setting the connecting holes of the pressure plate as oblong holes along its length, the pressure plate can be finely adjusted in the longitudinal position within a certain range during installation. This design can compensate for the manufacturing tolerances of the workpiece or tooling, ensuring that the pressure plate can be accurately aligned with the optimal clamping position on both sides of the workpiece and always smoothly aligned with the bolt holes on the base, thereby achieving faster and more flexible clamping and improving the adaptability and ease of use of the tooling.

[0012] Preferably, the base is provided with a plurality of positioning holes, and the positioning holes are equipped with positioning pins.

[0013] Locating holes and locating pins are used to quickly and accurately position the entire tooling on the machine tool worktable, realizing the precise reset of the tooling in the machine tool coordinate system and improving the efficiency and consistency of batch processing.

[0014] Preferably, the bottom surface of the base is provided with several light-reducing grooves.

[0015] The weight reduction groove effectively reduces the amount of material used and the total weight of the tooling while ensuring the overall structural strength and rigidity of the base. This reduces manufacturing costs and facilitates the handling and installation of the tooling.

[0016] Preferably, both sides of the base are provided with rectangular grooves, and the bottom edge of the rectangular grooves is parallel to the bottom surface of the base.

[0017] The rectangular slot provides a precise reference plane parallel to the bottom surface of the base, which allows the entire tooling to be stably pressed onto the machine tool table from here using a standard clamping plate, greatly enhancing the overall rigidity and stability of the tooling during the machining process.

[0018] Preferably, the base has two rectangular grooves on one side, and the two rectangular grooves are arranged along the length of the base.

[0019] Two rectangular slots are set on the same side, which increases the number of clamping points and allows multiple pressure plates to be used for clamping on this side. This can more effectively resist the overturning moment generated during processing, and is especially suitable for long bases or working conditions that are subjected to large cutting forces.

[0020] Preferably, all the rectangular slots are symmetrically distributed on both sides of the base.

[0021] The rectangular grooves are symmetrically distributed on both sides of the base, which allows the clamping force to be arranged symmetrically, avoiding base deformation or stress concentration caused by asymmetrical clamping force, and ensuring the accuracy and reliability of tooling installation.

[0022] Preferably, the limiting groove has a recessed avoidance area on the side away from the conical section.

[0023] The clearance zone design provides sufficient space for the flange of the workpiece to be turned, ensuring that the workpiece can be completely seated at the bottom of the mounting groove, while avoiding interference between the flange and the base, thus ensuring the accuracy of axial positioning.

[0024] Preferably, the base has annular bosses at both ends, and both annular bosses are coaxially arranged with the circular segment.

[0025] The annular boss can serve as an additional reference surface for quick alignment during installation or for mounting other auxiliary support mechanisms, enhancing the tooling's expandability and functionality.

[0026] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model provides a machining fixture for the inner wall of a conical shell. By setting a composite mounting groove on the top of the base that matches the shape of the workpiece, it can achieve rapid positioning and precise clamping of a composite surface workpiece with a conical section and a circular section with a flange. This effectively solves the problem of cumbersome clamping and the need for multiple adjustments and alignments required by existing general-purpose fixtures. 2. This utility model provides a machining fixture for the inner wall of a conical shell. By using a mounting groove that fully fits the outer surface of the workpiece to provide comprehensive support, and combined with the stable clamping of the clamping components on both sides, it can achieve sufficient rigid support during the machining process, effectively suppress cutting vibration, and ensure machining quality. 3. This utility model provides a tooling for machining the inner wall of a conical shell. By optimizing the structure of the mounting groove and the layout of the clamping components, the inner wall of the workpiece is fully exposed, which can achieve the best accessibility for machining the inner wall and provide sufficient operating space for the finishing and feature machining of the inner wall. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of the conical shell to be processed; Figure 2 This utility model provides a structural schematic diagram of a tooling for machining the inner wall of a conical shell. Figure 3 yes Figure 2 Enlarged view of area A in the middle; Figure 4 This is a schematic diagram of the bottom structure of the base described in this utility model; Figure 5 This is a diagram showing the usage state of a tooling for machining the inner wall of a conical shell according to this utility model; Marked in the image: 1-Conical shell, 11-Conical section, 12-Circular section, 13-Flange, 14-Flange strip, 15-Flange, 2-Base, 21-Mounting groove, 211-Conical section, 212-Circular section, 213-Limiting slot, 214-Recessed clearance area, 22-Positioning hole, 23-Lightening groove, 24-Rectangular groove, 25-Annular boss, 3-Pressure assembly, 31-Pressure plate, 311-Connecting hole, 312-Screw hole, 32-Pressure bolt, 33-Height adjustment screw. Detailed Implementation

[0028] The present invention will be further described in detail below with reference to specific embodiments. However, it should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0029] Unless otherwise specified, the use of terms such as "upper," "lower," "left," "right," "center," "inner," and "outer" to indicate orientation or positional relationships in the description of specific embodiments of this utility model is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product / equipment / device is typically placed during use. These terms are merely for the purpose of facilitating the description of the utility model solution or simplifying the description in specific embodiments, enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on this utility model.

[0030] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," and "parallel" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, or parallel, but rather that it can be slightly tilted or have a deviation. For example, "horizontal" merely means that its direction is more horizontal relative to "vertical," not that the structure must be completely horizontal, but can be slightly tilted. Alternatively, it can be simplified to mean that the corresponding device / component / element, when set in a "horizontal," "vertical," "suspended," or "parallel" direction, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.

[0031] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0032] Furthermore, in the description of the embodiments of this utility model, "several", "multiple", and "several" represent at least two. The number can be any number, such as two, three, four, five, six, seven, eight, or nine, and can even exceed nine.

[0033] Furthermore, in the description of the technical solution of this utility model, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "equipped with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0034] Example 1 like Figure 2 As shown, a tooling for processing the inner wall of a conical shell includes a base 2 and a plurality of clamping components 3 disposed on the top surface of the base 2. The top of the base 2 is provided with a mounting groove 21, which includes a conical section 211 and a circular section 212. The circular section 212 is disposed at the large end of the conical section 211, and a limiting groove 213 is provided at the end of the circular section 212 away from the conical section 211. The plurality of clamping components 3 are disposed on both sides of the mounting groove 21 for clamping the edges of the conical shell.

[0035] In optional implementations, such as Figure 4 As shown, several light-reducing grooves 23 can be provided on the bottom surface of the base 2. While ensuring the overall structural strength and rigidity of the base 2, the material usage and total weight of the tooling are effectively reduced, which not only reduces the manufacturing cost, but also facilitates the handling and installation of the tooling.

[0036] In one or more implementations, such as Figure 3 As shown, the clamping assembly 3 may include a pressure plate 31. The pressure plate 31 is provided with a connecting hole 311 and a screw hole 312. The screw hole 312 is located on the side of the connecting hole 311 away from the mounting groove 21. The connecting hole 311 is equipped with a clamping bolt 32. The base 2 is provided with bolt holes on both sides for installing the clamping bolt 32. The screw hole 312 is equipped with an adjusting screw 33. By rotating the adjusting screw 33, the downward pressure height of the pressure plate 31 near the workpiece end can be finely adjusted to ensure that the clamping force is evenly applied to the edge of the workpiece, preventing incomplete clamping or excessive local stress caused by workpiece or tooling manufacturing errors, thereby improving the reliability of clamping and the stability of the workpiece.

[0037] In optional implementations, such as Figure 3 As shown, the connecting hole 311 is set as an oblong hole, and the long axis of the oblong hole is set along the length direction of the pressure plate 31. Setting the connecting hole 311 of the pressure plate 31 as an oblong hole along its length direction allows the pressure plate 31 to be finely adjusted in longitudinal position within a certain range during installation.

[0038] In one or more implementations, such as Figure 2 and Figure 4 As shown, positioning holes 22 and rectangular grooves 24 can be provided on the base 2.

[0039] Positioning hole 22: can be used for positioning base 2. Positioning pins are installed in positioning hole 22 to quickly and accurately position the entire tooling on the machine tool worktable, realizing the precise reset of the tooling in the machine tool coordinate system, improving the efficiency and consistency of batch processing. Positioning hole 22 can also be used as a reserved connection hole 311 for two symmetrical bases 2, which facilitates the simultaneous internal surface processing of two symmetrical bases 2.

[0040] Rectangular groove 24: Its corners are rounded and the bottom edge is set parallel to the bottom surface of the base 2. The rectangular groove 24 provides a precise reference plane parallel to the bottom surface of the base 2, which makes it easy to use the standard pressure plate 31 to press the entire tooling stably onto the machine tool table from here, greatly enhancing the overall rigidity and stability of the tooling during the processing.

[0041] In an optional embodiment, two rectangular grooves 24 are provided on one side of the base 2. The two rectangular grooves 24 are arranged along the length of the base 2. The presence of two rectangular grooves 24 on the same side increases the number of clamping points, allowing multiple pressure plates 31 to be used for clamping on this side. This can more effectively resist the overturning moment generated during processing, and is especially suitable for long bases 2 or working conditions that bear large cutting forces.

[0042] In an optional embodiment, all the rectangular grooves 24 are symmetrically distributed on both sides of the base 2. The symmetrical distribution of the rectangular grooves 24 on both sides of the base 2 allows the arrangement of the clamping force to be completely symmetrical, avoiding deformation or stress concentration of the base 2 due to asymmetrical clamping force, and ensuring the accuracy and reliability of the tooling installation.

[0043] In one or more implementations, such as Figure 2 As shown, a recessed clearance area 214 can be set at the end of the limiting slot 213 away from the tapered section 211. The design of the clearance area provides sufficient space for the flange of the workpiece to be fully seated at the bottom of the mounting slot 21, while avoiding interference between the flange and the base 2, thus ensuring the accuracy of axial positioning.

[0044] In one or more implementations, such as Figure 2 and Figure 4 As shown, annular bosses 25 can be provided at both ends of the base 2. Both annular bosses 25 are coaxially arranged with the circular segment 212. The annular bosses 25 can serve as additional reference surfaces for quick alignment during installation or for installing other auxiliary support mechanisms, thereby enhancing the expandability and functionality of the tooling.

[0045] like Figure 1 , Figure 2 and Figure 4 As shown, the machining fixture for the inner wall of a conical shell according to this embodiment includes the following steps: S1: Tooling installation and fixing: The base 2 is initially positioned on the machine tool worktable by cooperating with the positioning pin through the positioning hole 22; then, the base 2 is firmly pressed onto the machine tool worktable by using the standard pressure plate 31 embedded in the rectangular grooves 24 symmetrically distributed on both sides of the base 2, thus completing the installation and fixing of the tooling. S2: Workpiece positioning and placement: Using the outer surface of the conical shell workpiece as a reference, align and place it in the mounting groove 21 on the top of the base 2; During this process, ensure that the conical section 211 of the workpiece fits with the conical section 211 of the mounting groove 21, and that the circular section 212 at the large end of the workpiece fits with the circular section 212 of the mounting groove 21. At the same time, ensure that the flange at the end of the workpiece is accurately embedded and axially abuts against the limiting groove 213. Use the recessed clearance area 214 on one side of the limiting groove 213 to provide space for the flange, thus completing the initial positioning and axial limiting of the workpiece. S3: Pre-adjust the position of the pressure plate 31. Place the pressure plate 31 of each clamping component 3 above the two sides of the workpiece. Use the longitudinal adjustment margin provided by the waist-shaped hole on the pressure plate 31 to finely adjust the longitudinal position of the pressure plate 31 so that it can be optimally aligned with the edge of the workpiece to be clamped, and ensure that the connecting hole 311 on the pressure plate 31 is aligned with the bolt holes on both sides of the base 2. S4: Apply and fine-tune the clamping force. Pass the clamping bolt 32 through the oblong hole of the pressure plate 31 and screw it into the bolt hole of the base 2, but do not tighten it completely yet. Then, screw in the height adjustment screw 33 on the pressure plate 31 so that its lower end contacts the top surface of the base 2. By adjusting the height of the height adjustment screw 33, precisely control the amount of downward pressure of the pressure plate 31 near the workpiece end to ensure that the clamping force is evenly applied to the edge of the workpiece. Finally, tighten all the clamping bolts 32 in sequence to stably and reliably clamp the workpiece into the mounting groove 21 of the base 2. S5: Perform inner wall machining, start the machine tool, and the spindle drives the cutting tool to perform machining operations on the inner wall of the cone-shaped shell workpiece that has been stably clamped; during the machining process, the workpiece obtains full support through the full fit between its entire outer surface and the mounting groove 21, effectively suppressing cutting vibration; S6: After the processing is completed and the workpiece is disassembled, loosen and remove all clamping bolts 32 and pressure plate 31 after the inner wall processing is completed, and the processed conical shell workpiece can be taken out from the mounting slot 21 of the base 2.

[0046] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A tooling for machining the inner wall of a conical shell, characterized in that, The device includes a base (2) and several clamping components (3) disposed on the top surface of the base (2). The top of the base (2) is provided with a mounting groove (21). The mounting groove (21) includes a conical section (211) and a circular section (212). The circular section (212) is disposed at the large end of the conical section (211). The end of the circular section (212) away from the conical section (211) is provided with a limiting groove (213). Several clamping components (3) are disposed on both sides of the mounting groove (21) for clamping the edges of the conical shell.

2. The tooling for machining the inner wall of a conical shell according to claim 1, characterized in that, The clamping assembly (3) includes a pressure plate (31), which has a connecting hole (311) and a screw hole (312). The screw hole (312) is located on the side of the connecting hole (311) away from the mounting groove (21). The connecting hole (311) is equipped with a clamping bolt (32). The base (2) has corresponding bolt holes on both sides for installing the clamping bolt (32). The screw hole (312) is equipped with an adjusting screw (33).

3. The tooling for machining the inner wall of a conical shell according to claim 2, characterized in that, The connecting hole (311) is configured as an oblong hole, and the long axis of the oblong hole is set along the length direction of the pressure plate (31).

4. The tooling for machining the inner wall of a conical shell according to claim 1, characterized in that, The base (2) is provided with a plurality of positioning holes (22), and the positioning holes (22) are equipped with positioning pins.

5. The tooling for machining the inner wall of a conical shell according to claim 1, characterized in that, The base (2) has several light-reducing grooves (23) on its bottom surface.

6. The tooling for machining the inner wall of a conical shell according to claim 1, characterized in that, The base (2) has rectangular grooves (24) on both sides, and the bottom edge of the rectangular grooves (24) is parallel to the bottom surface of the base (2).

7. The tooling for machining the inner wall of a conical shell according to claim 6, characterized in that, The base (2) has two rectangular slots (24) on one side, and the two rectangular slots (24) are arranged along the length of the base (2).

8. The tooling for machining the inner wall of a conical shell according to claim 6, characterized in that, All the rectangular slots (24) are symmetrically distributed on both sides of the base (2).

9. A machining fixture for the inner wall of a conical shell according to any one of claims 1-8, characterized in that, The limiting slot (213) has a recessed avoidance area (214) on the side away from the conical segment (211).

10. A machining fixture for the inner wall of a conical shell according to any one of claims 1-8, characterized in that, The base (2) has annular bosses (25) at both ends, and both annular bosses (25) are coaxially arranged with the circular segment (212).

Images