A processing tool for a combustion chamber ring

Abstract

The application provides a processing tool for a combustion chamber ring, and belongs to the technical field of combustion chamber ring processing. Specifically, the tool comprises an annular inner core, a tensioning assembly, a punching assembly and a connecting head. The connecting head is connected to one end of the annular inner core. A plurality of cutting grooves are arranged on the annular inner core in a radial direction and penetrate through two end faces of the annular inner core. The cutting grooves divide the annular inner core into a plurality of arc-shaped segments. The tensioning assembly is connected to the annular inner core to control the mutual approach or separation of the arc-shaped segments. The punching assembly is used for punching a hole with a designed hole shape on the combustion chamber ring sleeved on the annular inner core. Through the processing scheme, the machining process of the hole on the combustion chamber ring is simplified, and the forming effect of the hole and the ring on the combustion chamber is improved.

Description

Technical Field

[0001] This application relates to the field of combustion chamber ring machining, and more particularly to a machining fixture for combustion chamber rings. Background Technology

[0002] The combustion chamber ring, containing holes and circular flanged holes, has a concave structure. While conventional sheet metal fabrication is cheaper, it results in poor forming quality and requires subsequent individual hole reshaping, which is time-consuming. After rolling (especially for small rings), the arc surfaces between holes cannot be rolled and rounded, failing to meet forming requirements. Direct sheet metal stamping requires numerous specialized molds with complex structures, long production cycles, and high costs. It also relies heavily on specialized equipment, hindering product competitiveness. 3D printing additive manufacturing results in long single-piece manufacturing cycles and high costs, making it unsuitable for mass production and also negatively impacting product competitiveness. Summary of the Invention

[0003] In view of this, this application provides a machining fixture for a combustion chamber ring, which solves the problems in the prior art, simplifies the machining process of the upper hole of the combustion chamber ring, and ensures improved forming effect of the upper hole and the ring.

[0004] The machining fixture for a combustion chamber ring provided in this application adopts the following technical solution:

[0005] A machining fixture for a combustion chamber ring includes an annular inner core, a tensioning assembly, a punching assembly, and a connector. The connector is connected to one end of the annular inner core. The annular inner core has several radially distributed cutting grooves that penetrate both ends of the annular inner core, dividing the annular inner core into several arc-shaped segments. The tensioning assembly is connected to the annular inner core to control the arc-shaped segments to move closer together or further apart. The punching assembly is used to punch holes with designed hole shapes on the combustion chamber ring fitted on the annular inner core.

[0006] Optionally, the machining fixture further includes a rotating assembly, which includes a rotating shaft connected to the annular inner core, and the rotating shaft and the annular inner core are coaxially connected.

[0007] Optionally, the connector and the annular inner core are coaxially arranged, and a clamping member is provided on the rotating shaft to clamp the connector.

[0008] Optionally, the tensioning assembly includes a truncated cone and a stud arranged coaxially. The stud enters the annular inner core from the end away from the connector and is threaded to the inner wall of the annular inner core. The small-diameter end of the truncated cone enters the inner ring of the annular inner core and abuts against the inner wall of the annular inner core.

[0009] Optionally, a rotating nut is fixed to the end face of the large-diameter end of the truncated cone.

[0010] Optionally, the inner wall of the annular inner core gradually expands from the threaded portion toward the end away from the connector to form an expansion section. The maximum inner diameter of the expansion section is greater than the outer diameter of the small diameter end of the truncated cone. After the truncated cone enters the expansion section, the peripheral sidewall of the truncated cone abuts against the inner wall of the large diameter end of the expansion section.

[0011] Optionally, each of the arc segments has an extension segment extending obliquely towards the axis on the same side end face, and several extension segments are connected to each other after they come together, and the connector head connects the connection part of several extension segments.

[0012] Optionally, the punching assembly includes:

[0013] A plurality of positioning and fixing holes are formed on the outer peripheral side of the annular inner core and near one end of the connector. The plurality of positioning and fixing holes are evenly distributed around the annular inner core. The interval between adjacent positioning and fixing holes is consistent with the interval between the holes of adjacent fish scale-shaped holes on the combustion chamber ring.

[0014] An annular groove is formed on the outer circumferential side of the annular inner core and away from the end of the connector;

[0015] A punch holder extends along the axis of the inner core of the ring. One end of the punch holder is fixedly connected to the positioning hole by a bolt, and the other end is provided with a fish scale hole punch. The fish scale hole punch is aligned with the annular groove, and the fish scale hole punch punches the fish scale hole shape to form a fish scale hole.

[0016] Optionally, the punching assembly includes:

[0017] A plurality of mounting slots are formed on the outer circumferential side of the annular inner core and away from the end of the connector. The plurality of mounting slots are evenly distributed along the circumference of the annular inner core, and the plurality of mounting slots correspond one-to-one with the hole positions of the circular flange holes on the combustion chamber ring.

[0018] A circular flanged hole lower die is installed in the mounting groove. The side of the circular flanged hole lower die facing away from the axis of the annular inner core has a profile that matches the inner contour of the circular flanged hole. The side of the circular flanged hole lower die facing away from the axis of the annular inner core has a guide post that extends radially outward. The guide post is used to extend into the hole of the circular flanged hole. The outer periphery of the guide post has a countersunk hole that matches the designed outer diameter of the circular flanged hole.

[0019] The upper die for the circular flanged hole has a profile at one end that matches the outer contour of the circular flanged hole. The end face of the profile of the upper die for the circular flanged hole is consistent with the designed inner diameter of the circular flanged hole. A guide groove for accommodating the guide post is provided on the end face of the profile of the upper die for the circular flanged hole.

[0020] In summary, this application includes the following beneficial technical effects:

[0021] Compared with integral sheet metal stamping molds, the processing fixture of this application has a simple structure, short processing cycle, and low manufacturing cost. Furthermore, the device is easy to operate and maintain. Compared with conventional sheet metal stamping methods, the combustion chamber ring with fish-scale holes and circular flanged holes produced using the fixture of this application has well-formed fish-scale holes and circular flanged holes, eliminating the need for subsequent reshaping of these holes. It also ensures that the annular walls between the holes do not deform, maintaining a good arc shape and aesthetically pleasing appearance, thus well meeting the requirements of the combustion chamber. Moreover, the manufacturing cycle is short, requiring no special equipment, and the cost is low. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the working state of the machining tooling for punching holes in the combustion chamber ring in this application;

[0024] Figure 2 This is a schematic diagram of the tooling used for punching fish-scale holes in this application;

[0025] Figure 3 This is a schematic diagram of the internal structure of the annular inner core of this application;

[0026] Figure 4 This is a schematic diagram of the tooling used for punching circular flanged holes in this application.

[0027] Explanation of reference numerals in the attached drawings: 1. Combustion chamber ring; 2. Fish scale hole; 3. Circular flanged hole; 4. Annular inner core; 41. Extension section; 5. Frustum; 51. Stud; 6. Rotary nut; 7. Cutting groove; 8. Fish scale hole punch; 9. Punch holder; 10. Annular groove; 11. Positioning and fixing hole; 12. Connector; 14. Lead post; 15. Circular flanged hole lower die; 151. Countersunk hole; 16. Circular flanged hole upper die; 17. Lead groove; 18. Mounting groove. Detailed Implementation

[0028] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0029] The following specific examples illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. This application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0030] It should be noted that various aspects of embodiments within the scope of the appended claims are described below. It will be apparent that the aspects described herein can be embodied in a wide variety of forms, and any particular structure and / or function described herein is merely illustrative. Based on this application, those skilled in the art will understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number of aspects set forth herein can be used to implement the device and / or practice the method. Additionally, this device and / or method can be implemented using structures and / or functionalities other than one or more of the aspects set forth herein.

[0031] It should also be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this application. The drawings only show the components related to this application and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0032] Furthermore, specific details are provided in the following description to facilitate a thorough understanding of the examples. However, those skilled in the art will understand that the described aspects can be practiced without these specific details.

[0033] This application provides a machining fixture for a combustion chamber ring.

[0034] like Figures 1-3As shown, a machining fixture for a combustion chamber ring includes an annular inner core 4, a tensioning assembly, a punching assembly, and a connector 12. The connector 12 is connected to one end of the annular inner core 4. The annular inner core 4 is provided with a plurality of radially distributed cutting grooves 7 that penetrate both ends of the annular inner core 4. The cutting grooves 7 divide the annular inner core 4 into a plurality of arc-shaped segments. The tensioning assembly is connected to the annular inner core 4 to control the plurality of arc-shaped segments to move closer together or further apart. The punching assembly is used to punch holes with designed hole shapes on the combustion chamber ring 1 sleeved on the annular inner core 4.

[0035] In one embodiment, four cutting grooves 7 are provided, dividing the annular inner core 4 into four arc-shaped segments. In other embodiments, the cutting grooves 7 may also be three or five, etc.

[0036] A pre-cut and rolled combustion chamber ring 1 is fitted onto the outer circumference of an annular inner core 4. A tensioning assembly secures the annular inner core 4 against the combustion chamber ring 1 from the inside. A punching assembly is used to punch a hole at one position. The annular inner core 4 and combustion chamber ring 1 are rotated to align the next hole with the punching assembly. After completing one cycle of punching, the tensioning assembly loosens the contact between the annular inner core 4 and the combustion chamber ring 1. The position of the combustion chamber ring 1 is adjusted so that one hole in the next cycle aligns with the punching assembly to continue punching.

[0037] The rings processed by the above tooling do not require re-shaping, and the forming effect of the holes and rings is good, which can ensure the requirements of the combustion chamber. Furthermore, the dependence on equipment is low, the device structure is simple, and the processing cycle is greatly reduced.

[0038] The machining fixture also includes a rotating component (not shown in the figure), which includes a rotating shaft connected to the annular inner core 4, and the rotating shaft and the annular inner core 4 are coaxially connected.

[0039] The connector 12 and the annular inner core 4 are coaxially arranged, and a clamping member is provided on the rotating shaft to clamp the connector 12. The clamping member can be a three-jaw chuck fixed on the rotating shaft, or the connector 12 can be flange-connected to the rotating shaft.

[0040] The connector 12 is fixed to the rotating shaft by a clamp, so that the operator can easily rotate the annular inner core 4, thereby easily driving the rotation of the combustion chamber ring 1.

[0041] The tensioning assembly includes a coaxially arranged truncated cone 5 and stud 51. The stud 51 enters the annular inner core 4 from the end furthest from the connector 12 and is threadedly connected to the inner wall of the annular inner core 4. The smaller diameter end of the truncated cone 5 enters the inner ring of the annular inner core 4 and abuts against the inner wall of the annular inner core 4. Rotating the truncated cone 5 tightens the annular inner core 4 with the stud 51, allowing more of the truncated cone 5 to enter the annular inner core 4, while the larger outer diameter portion of the truncated cone 5 abuts against the annular inner core 4, thus tightening the annular inner core 4 and fixing the combustion chamber ring 1. Conversely, rotating the truncated cone 5 disengages the stud 51 from the threaded portion of the annular inner core 4, and the truncated cone 5 disengages from the annular inner core 4, thereby relaxing the clamping effect on the annular inner core 4 and allowing the multiple arc-shaped segments to converge, facilitating the removal and adjustment of the combustion chamber ring 1.

[0042] In one embodiment, the truncated cone 5 and the stud 51 are integrally formed.

[0043] In one embodiment, the tensioning component can also be a three-jaw chuck or a four-jaw chuck, with the number of jaws corresponding to the number of arc segments. The extension and retraction of the jaws on the chuck cause the arc segments to move closer and further apart.

[0044] A rotating nut 6 is fixed to the end face of the large-diameter end of the truncated cone 5. The rotating nut 6 can be turned by hand or with a wrench to control the rotation of the truncated cone 5, thereby controlling the closing and opening of the arc segments.

[0045] The inner wall of the annular inner core 4 gradually expands from the threaded portion towards the end away from the connector 12 to form an expansion section. The maximum inner diameter of the expansion section is greater than the outer diameter of the small diameter end of the truncated cone 5. After the truncated cone 5 enters the expansion section, the peripheral sidewall of the truncated cone 5 abuts against the inner wall of the large diameter end of the expansion section. This allows the truncated cone 5 and the stud 51 to better enter the annular inner core 4.

[0046] Each of the arc-shaped segments has an extension segment 41 extending obliquely towards the axis on the same side end face. Several extension segments 41 connect to each other after being brought together, and the connector 12 connects the connecting portions of the extension segments 41. The extension segments 41 have a certain deformation capacity, ensuring both the connection between the connector 12 and the arc-shaped segment and the mobility of the arc-shaped segment when it moves closer or further apart. The arc-shaped segment, extension segments 41, and connector 12 can be integrally formed.

[0047] like Figure 2 As shown, in one embodiment, the punch assembly is used to form the fish-scale holes 2 on the combustion chamber ring 1. That is, in this embodiment, the holes are designed as fish-scale holes 2.

[0048] The punching assembly includes:

[0049] A plurality of positioning and fixing holes 11 are formed on the outer peripheral side of the annular inner core 4 and near one end of the connector 12. The plurality of positioning and fixing holes 11 are evenly distributed around the annular inner core 4, and the interval between adjacent positioning and fixing holes 11 is consistent with the interval between the holes of the adjacent fish scale holes 2 on the combustion chamber ring 1.

[0050] An annular groove 10 is formed on the outer peripheral side of the annular inner core 4 and at the end away from the connector 12.

[0051] The punch holder 9 extends along the axial direction of the annular inner core 4. One end of the punch holder 9 is fixedly connected to the positioning and fixing hole 11 by bolts, and the other end is provided with a fish scale hole punch 8. The fish scale hole punch 8 is aligned with the annular groove 10. The fish scale hole punch 8 punches the fish scale hole 2 to form the fish scale hole 2.

[0052] The annular groove 10 provides space for the fish-scale hole punch 8 to pass through the side wall of the combustion chamber ring 1.

[0053] Specifically, the connector 12 is fixed to the rotating assembly, and the arc-shaped segment is brought closer together. The combustion chamber ring 1, with the fish-scale hole 2 cut into its shape, is then fitted onto the annular inner core 4. The position of the holes in the fish-scale hole 2 is adjusted so that the holes are aligned with the fish-scale hole punch 8. Since the spacing of the positioning and fixing holes 11 is consistent with the spacing of the holes, after one hole is aligned with the fish-scale hole punch 8, when the punch holder 9 is fixed in the next positioning and fixing hole 11, the next hole is still aligned with the fish-scale hole punch 8. The tensioning assembly is used to enlarge the annular inner core 4 so that the annular inner core 4 is pressed against the inner wall of the combustion chamber ring 1. The fish-scale hole punch 8 is used to punch out the holes. By rotating the annular inner core 4 and fixing the punch holder 9 to the positioning and fixing holes 11 one by one, the holes around the circumference are punched out one by one with the punch. After completion, the tensioning assembly is released from its tensioning effect on the annular inner core 4, allowing the arc-shaped segment to close and return to its original position. The position of the combustion chamber ring 1 on the annular inner core 4 is adjusted, and the subsequent holes are made in sequence.

[0054] like Figure 3 and Figure 4 As shown, in one embodiment, the punch assembly is used to form a circular flanged hole 3 on the combustion chamber ring 1, that is, in this embodiment, the hole is designed as a circular flanged hole 3.

[0055] The punching assembly includes:

[0056] A plurality of mounting grooves 18 are formed on the outer circumferential side of the annular inner core 4 and away from the end of the connector 12. The plurality of mounting grooves 18 are evenly distributed around the annular inner core 4, and the plurality of mounting grooves 18 correspond one-to-one with the hole positions of the circular flange hole 3 on the combustion chamber ring 1.

[0057] A circular flanged hole lower mold 15 is installed in the mounting groove 18. The side of the circular flanged hole lower mold 15 facing away from the axis of the annular inner core 4 is provided with a profile that matches the inner contour of the circular flanged hole 3. The side of the circular flanged hole lower mold 15 facing away from the axis of the annular inner core 4 is provided with a guide post 14 extending radially outward. The guide post 14 is used to extend into the hole of the circular flanged hole 3. The outer periphery of the guide post 14 is provided with a countersunk hole 151 that matches the designed outer diameter of the circular flanged hole.

[0058] The upper mold 16 for the circular flanged hole has a profile at one end that matches the outer contour of the circular flanged hole 3. The end face of the upper mold 16 for the circular flanged hole has the same inner diameter as the circular flanged hole 3. The end face of the upper mold 16 for the circular flanged hole has a guide groove 17 for accommodating the guide post 14.

[0059] First, insert the guide post 14 on the lower die 15 with a circular flange hole into the pre-cut circular hole on the combustion chamber ring 1. Then, push the annular inner core 4 into the combustion chamber ring 1. Place the lower die 15 with a circular flange hole into the mounting groove 18. Then, tighten the annular inner core 4 with the control tensioning assembly. The arc segment hugs the combustion chamber ring 1 from the inside. Install the connector 12 on the rotating shaft of the rotating assembly. Insert the guide groove 17 on the upper die 16 with a circular flange hole into the guide post 14 of the lower die 15 with a circular flange hole in sequence. Then, punch out the circular flange holes 3 in sequence. After punching a circle of holes, the tensioning assembly relaxes the tension on the annular inner core 4, so that the arc segment comes together and is pulled out from the combustion chamber ring 1.

[0060] The entire combustion chamber ring 1 containing the circular flanged hole 3 is fabricated, eliminating the need for subsequent reshaping.

[0061] In one embodiment, such as Figure 1 and Figure 3 As shown, the same combustion chamber ring 1 may have both fish-scale holes 2 and circular flanged holes 3. When machining such a combustion chamber ring 1, when machining the fish-scale holes 2 and the circular flanged holes 3 on the same combustion chamber ring 1, the machining of the fish-scale holes 2 will be as follows: Figure 1 The annular inner core 4 with positioning and fixing holes 11, along with the punch holder 9 and the fish-scale hole punch 8, is used to process the fish-scale hole 2. When it is necessary to process the circular flanged hole 3, the punch holder 9 is replaced with a different punch. Figure 3 The annular inner core 4 with mounting groove 18 and circular flange hole lower mold 15 is used in conjunction with the circular flange hole upper mold 16 to process the circular flange hole 3.

[0062] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A machining fixture for a combustion chamber ring, characterized in that, The device includes an annular inner core, a tensioning assembly, a punching assembly, and a connector. The connector is connected to one end of the annular inner core. The annular inner core has several radially distributed cutting grooves that penetrate both ends of the annular inner core. The cutting grooves divide the annular inner core into several arc-shaped segments. The tensioning assembly is connected to the annular inner core to control the arc-shaped segments to move closer together or further apart. The punching assembly is used to punch holes with designed hole shapes on the combustion chamber ring fitted on the annular inner core. The tensioning assembly includes a truncated cone and a stud arranged coaxially. The stud enters the annular inner core from the end away from the connector and is threaded to the inner wall of the annular inner core. The small-diameter end of the truncated cone enters the inner ring of the annular inner core and abuts against the inner wall of the annular inner core. Each of the arc segments has an extension segment extending obliquely towards the axis on the same side end face. Several extension segments are connected to each other after they come together, and the connector head connects the connection part of several extension segments. The punching assembly includes: A plurality of positioning and fixing holes are formed on the outer peripheral side of the annular inner core and near one end of the connector. The plurality of positioning and fixing holes are evenly distributed around the annular inner core. The interval between adjacent positioning and fixing holes is consistent with the interval between the holes of adjacent fish scale-shaped holes on the combustion chamber ring. An annular groove is formed on the outer circumferential side of the annular inner core and away from the end of the connector; A punch holder extends along the axis of the inner core of the ring. One end of the punch holder is fixedly connected to the positioning hole by a bolt, and the other end is provided with a fish scale hole punch. The fish scale hole punch is aligned with the annular groove, and the fish scale hole punch punches the fish scale hole shape to form a fish scale hole.

2. The machining fixture for the combustion chamber ring according to claim 1, characterized in that, The machining fixture also includes a rotating component, which includes a rotating shaft connected to the annular inner core, and the rotating shaft and the annular inner core are coaxially connected.

3. The machining fixture for the combustion chamber ring according to claim 2, characterized in that, The connector and the annular inner core are coaxially arranged, and a clamping member is provided on the rotating shaft, which clamps the connector.

4. The machining fixture for the combustion chamber ring according to claim 1, characterized in that, A rotating nut is fixed to the end face of the large-diameter end of the truncated cone.

5. The machining fixture for the combustion chamber ring according to claim 1, characterized in that, The inner wall of the annular inner core gradually expands from the threaded portion toward the end away from the connector to form an expansion section. The maximum inner diameter of the expansion section is greater than the outer diameter of the small diameter end of the truncated cone. After the truncated cone enters the expansion section, the peripheral sidewall of the truncated cone abuts against the inner wall of the large diameter end of the expansion section.

6. The machining fixture for the combustion chamber ring according to claim 1, characterized in that, The punching assembly includes: A plurality of mounting slots are formed on the outer circumferential side of the annular inner core and away from the end of the connector. The plurality of mounting slots are evenly distributed along the circumference of the annular inner core, and the plurality of mounting slots correspond one-to-one with the hole positions of the circular flange holes on the combustion chamber ring. A circular flanged hole lower die is installed in the mounting groove. The side of the circular flanged hole lower die facing away from the axis of the annular inner core has a profile that matches the inner contour of the circular flanged hole. The side of the circular flanged hole lower die facing away from the axis of the annular inner core has a guide post that extends radially outward. The guide post is used to extend into the hole of the circular flanged hole. The outer periphery of the guide post has a countersunk hole that matches the designed outer diameter of the circular flanged hole. The upper die for the circular flanged hole has a profile at one end that matches the outer contour of the circular flanged hole. The end face of the profile of the upper die for the circular flanged hole is consistent with the designed inner diameter of the circular flanged hole. A guide groove for accommodating the guide post is provided on the end face of the profile of the upper die for the circular flanged hole.

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