Rectangular inner cavity hole edge chamfering machining device

Abstract

The invention provides a rectangular inner cavity hole edge chamfering machining device, and belongs to the technical field of aviation part machining, the rectangular inner cavity hole edge chamfering machining device specifically comprises a base assembly, a supporting assembly and a working end assembly, the base assembly is matched with a drilling machine, and the working end assembly is fixed to the upper side of the base assembly through the supporting assembly; the working end assembly comprises a rotary connecting rod, a direction switching block, a switching block, a gear assembly, a small drill bit and a drill bit base, the small drill bit is fixed to the drill bit base and matched with the gear assembly, the switching block is fixed to the upper portion of the supporting assembly, the direction switching block is fixed to the switching block and matched with the wheel outlet assembly, one end of the rotary connecting rod is matched with a drilling machine, and the other end of the rotary connecting rod is matched with the gear outlet assembly. The other end of the rotary connecting rod is matched with the gear assembly which is used for changing the rotating direction of the drilling machine spindle. By means of the treatment scheme, the problem that the consistency of hole edge chamfers of the rectangular inner cavity is low is solved, and the percent of pass of parts and the machining efficiency are improved.

Description

Technical Field

[0001] This application relates to the field of machining technology for aerospace parts, and in particular to a chamfering device for rectangular internal cavity holes. Background Technology

[0002] In the machining of aerospace components, rectangular parts are crucial in practical applications. These parts have complex structures, numerous internal cavities, and limited space. Currently, a problem exists in the machining of these parts: inconsistent machining results occur when chamfering the edges of internal cavities. This leads to the parts failing to achieve the intended design performance. Summary of the Invention

[0003] In view of this, the present application provides a chamfering device for rectangular inner cavity holes, which at least partially solves the problem of low consistency of chamfering on the edges of rectangular inner cavity holes in the prior art.

[0004] This application provides a chamfering device for rectangular internal cavity holes, including a base assembly, a support assembly, and a working end assembly. The base assembly cooperates with a drilling machine, and the working end assembly is fixed to the upper side of the base assembly via the support assembly. The working end assembly includes a rotating connecting rod, a direction adapter block, an adapter block, a gear assembly, a small drill bit, and a drill bit base. The small drill bit is fixed on the drill bit base and cooperates with the gear assembly. The adapter block is fixed above the support assembly, and the direction adapter block is fixed on the adapter block and cooperates with the output wheel assembly. One end of the rotating connecting rod cooperates with the drilling machine, and the other end of the rotating connecting rod cooperates with the gear assembly. The gear assembly is used to change the rotation direction of the drilling machine spindle.

[0005] According to one specific implementation of the present application, the gear assembly includes a first gear and a second gear that mesh with each other. The first gear is connected to the other end of the rotating connecting rod, and the second gear meshes with a small drill bit.

[0006] According to a specific implementation of an embodiment of this application, the base assembly includes a mating block, which is a convex-shaped thin plate structure. The mating block has a circular hole in the middle part and a first through hole around the circular hole. The circular hole is used for nesting and mating with a drilling machine, and the first through hole is used for fixing with a support assembly.

[0007] According to a specific implementation of the present application, the upper protrusion of the mating block is provided with an open channel in the middle, the open channel is connected to a circular hole, and the upper protrusion of the mating block is provided with a second through hole perpendicular to the length direction of the open channel. After the mating block is properly mated with the drilling machine, a nut is used to rotate and tighten it in the second through hole.

[0008] According to a specific implementation of an embodiment of this application, the support component includes a support column, one end of which is fixedly connected to a mating block, and the other end of which is fixedly connected to a connecting block.

[0009] According to a specific implementation of an embodiment of this application, the working end component further includes a pad block located between the other end of the support column and the connecting block, and the thickness of the pad block is dynamically adjusted according to the size of the workpiece.

[0010] According to a specific implementation of the present application, the direction adapter block is configured as a convex-shaped structure, the bottom edge of the front side of the direction adapter block is provided with a semi-circular groove, the semi-circular groove cooperates with the gear assembly, the upper protrusion of the front side of the direction adapter block is connected to the connecting block, and the back side of the direction adapter block is provided with a rectangular groove.

[0011] According to a specific implementation of an embodiment of this application, the working end component further includes a plug, which is disposed at the end of the drill bit base and is used to seal the drill bit base portion.

[0012] Beneficial effects: The rectangular internal cavity chamfering processing device in this embodiment effectively improves the consistency of rectangular internal cavity chamfering processing through the synergistic effect of the base assembly, support assembly, and working end assembly. The base assembly, through precise nesting and mating of the mating block with the drill press and tightening of the nut, ensures stable installation of the entire device, providing a solid foundation for the processing. The support column and dynamically adjustable pad in the support assembly can flexibly adapt to the size of the workpiece, ensuring the working end assembly is in the optimal processing position. The gear assembly of the working end assembly enables the change of the drill press spindle rotation direction, allowing the small drill bit to operate flexibly within the rectangular internal cavity. Combined with the split-design drill bit base, it facilitates assembly and ensures stable power transmission. Furthermore, the precise engagement and limiting of the gear assembly by the direction conversion block further guarantees the stability and consistency of the small drill bit's movement trajectory during processing. This significantly reduces the problem of parts failing to meet design expectations due to inconsistent processing conditions, ensuring dimensional compliance when processing such parts, and improving part qualification rate and production efficiency. Attached Figure Description

[0013] 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.

[0014] Figure 1 An exploded view of the device according to an embodiment of the present invention; Figure 2 A three-dimensional view of a first gear according to an embodiment of the present invention; Figure 3 A three-dimensional view of a second gear according to an embodiment of the present invention; Figure 4 A three-dimensional view of a pad block according to an embodiment of the present invention; Figure 5 This is a three-dimensional schematic diagram of a direction adapter block according to an embodiment of the present invention; Figure 6 A two-dimensional diagram of a direction transition block according to an embodiment of the present invention; Figure 7 This is a three-dimensional schematic diagram of a support column according to an embodiment of the present invention; Figure 8 This is a three-dimensional schematic diagram of a rotating connecting rod according to an embodiment of the present invention; Figure 9 This is a three-dimensional schematic diagram of a drill bit base according to an embodiment of the present invention; Figure 10 This is a two-dimensional view of a drill bit base according to an embodiment of the present invention; Figure 11 This is a three-dimensional schematic diagram of a blockage according to an embodiment of the present invention; Figure 12 This is a three-dimensional schematic diagram of a nut according to an embodiment of the present invention; Figure 13 This is a three-dimensional schematic diagram of a small drill bit according to an embodiment of the present invention; Figure 14 A two-dimensional diagram of a small drill bit according to an embodiment of the present invention; Figure 15 This is a three-dimensional schematic diagram of a mating block according to an embodiment of the present invention; Figure 16 This is a three-dimensional schematic diagram of an adapter block according to an embodiment of the present invention; Figure 17 This is a three-dimensional schematic diagram of the device according to an embodiment of the present invention; Figure 18 A two-dimensional view of the device according to an embodiment of the present invention; Figure 19 This is a partial exploded view of the device according to an embodiment of the present invention; Figure 20 This is another partial exploded view of the overall device according to an embodiment of the present invention.

[0015] In the diagram: 1. Adapter block; 2. Pad block; 3. Support column; 4. Mating block; 5. Drill bit base; 6. Directional adapter block; 7. Rotary connecting rod; 8. Plug; 9. Small drill bit. Detailed Implementation

[0016] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0017] 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.

[0018] 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.

[0019] 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 illustrations only show the components related to this application and are not drawn according to the number, shape and size of the components in actual implementation. In 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.

[0020] 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.

[0021] This application provides a chamfering device for rectangular internal cavity holes, as described below. Figures 1 to 20 Provide a detailed description.

[0022] In one embodiment, refer to Figure 1The rectangular internal cavity chamfering processing device includes a base assembly, a support assembly, and a working end assembly. The base assembly cooperates with the drilling machine. The working end assembly is fixed to the upper side of the base assembly through the support assembly. The working end assembly includes a rotary connecting rod 7, a direction adapter block 6, an adapter block 1, a gear assembly, a small drill bit 9, and a drill bit base 5. The small drill bit 9 is fixed on the drill bit base 5 and cooperates with the gear assembly. The drill bit base 5 is divided into upper and lower parts with the same structure. They are used together when in use. The split structure facilitates assembly. One end of the drill bit 9 is connected to the gear part of the rotary connecting rod 7 to receive power, and the other end is connected to the drill bit to provide power. The adapter block 1 is fixed above the support assembly. The direction adapter block 6 is fixed on the adapter block 1 and cooperates with the output wheel assembly. One end of the rotary connecting rod 7 cooperates with the drilling machine, and the other end of the rotary connecting rod 7 cooperates with the gear assembly. The rotary connecting rod 7 is a slender cylinder. Its function is to cooperate with the drilling machine at one end as the power source for the drill bit, and connect to the gear at the other end to transmit power to the working end. The gear assembly is used to change the rotation direction of the drilling machine spindle.

[0023] In this embodiment, the device comprises a base assembly, a support assembly, and a working end assembly. The base assembly, in conjunction with a drilling machine, provides positioning, clamping, fastening, and machining functions. It is used according to the characteristics of the part to ensure stable clamping and prevent loosening when machining the chamfered edges of rectangular inner cavities. It also ensures consistent chamfering even when the chamfer is located on the sidewall of the rectangular inner cavity. Specifically, the stable cooperation between the base assembly and the drilling machine provides a solid foundation for the entire device. The support assembly securely mounts the working end assembly above the base assembly, ensuring structural stability during machining. The rotating connecting rod 7 in the working end assembly receives power from the drilling machine and achieves a clever change in rotation direction via a gear assembly. This allows the small drill bit 9 to operate flexibly within the special space of the rectangular inner cavity, effectively solving the problems of inconvenient operation and difficulty in guaranteeing chamfering accuracy in narrow cavities using traditional machining methods. This significantly improves the machining consistency and efficiency of chamfering the inner cavity edges of aerospace rectangular parts, meeting the technical requirements for high-precision machining of aerospace parts.

[0024] Furthermore, refer to Figure 2 and Figure 3 The gear assembly includes a first gear and a second gear that mesh with each other. The first gear is connected to the other end of the rotating connecting rod 7, and the second gear meshes with the small drill bit 9.

[0025] Furthermore, refer to Figure 15 The base assembly includes a mating block 4, which is a convex-shaped thin plate structure. The mating block 4 has a circular hole in the middle and a first through hole around the circular hole. The circular hole is used for nesting with a drilling machine, and the first through hole is used for fixing with a support assembly. The outer periphery of the mating block 4 has two square grooves and two semi-circular grooves.

[0026] Furthermore, the upper protrusion of the mating block 4 has an open channel in the middle, which communicates with the circular hole. The upper protrusion of the mating block 4 also has a second through hole perpendicular to the length of the open channel. After the mating block 4 is properly engaged with the drilling machine, a nut is used in the second through hole for tightening. In this embodiment, tightening the nut in the second through hole further reinforces the nesting fit between the mating block 4 and the drilling machine, effectively preventing relative displacement between them during processing. This ensures the stability and reliability of the entire device during processing and avoids affecting the accuracy of the chamfering process due to loosening. This tightening method is simple to operate; a quick and secure fixation can be achieved by rotating the nut, improving the installation efficiency and ease of use of the device, and also facilitating subsequent disassembly and maintenance.

[0027] Furthermore, refer to Figure 7 The support assembly includes a support column 3, one end of which is fixedly connected to a mating block 4, and the other end of which is fixedly connected to a connecting block. Specifically, one end of the support column 3 is provided with a threaded hole, and a screw is threadedly connected to one end of the support column 3 by passing through the first through hole of the mating block 4.

[0028] Furthermore, refer to Figure 4 The working end assembly also includes a pad 2, which is located between the other end of the support column 3 and the connecting block. The thickness of the pad 2 is dynamically adjusted according to the size of the workpiece. The pad 2 is a rectangular block structure with a central through hole. Its function is to connect the working end to the support part. The thickness of the pad 2 is a dynamic dimension that can be adjusted according to the actual situation of the part.

[0029] Furthermore, refer to Figure 5 The direction adapter block 6 is designed with a convex shape. The bottom edge of the front side of the direction adapter block 6 has a semi-circular groove that mates with the gear assembly. The upper protrusion on the front side of the direction adapter block 6 connects with the connecting block. The back side of the direction adapter block 6 has a rectangular groove. Specifically, this part consists of two identical components, upper and lower. One side of the direction adapter block 6 has a thin plate with two rectangular grooves and one semi-circular groove, while the other side has a component with a rectangular groove. The direction adapter block 6 has one through hole on each side in the vertical direction, serving to assemble the two identical components together, forming a circular groove in the middle that mates with the gear.

[0030] Furthermore, refer to Figure 11 The working end assembly also includes a plug 8, which is disposed at the end of the drill bit base 5 and is used to seal the drill bit base 5.

[0031] In practice, this device adopts strict dimensional requirements and involves very strict tolerances. In order to ensure that the dimensions of the parts are qualified during the processing, the design requirements of each part of the device are even more stringent.

[0032] The embodiments provided by this invention effectively improve the consistency of chamfering processing of rectangular inner cavity holes through the synergistic effect of the base assembly, support assembly, and working end assembly. The base assembly, through the precise nesting and tightening of the mating block 4 with the drill press and the nut, ensures the stable installation of the entire device, providing a solid foundation for the processing. The support column 3 and the dynamically adjustable pad block 2 in the support assembly can flexibly adapt to the size of the workpiece, ensuring the working end assembly is in the optimal processing position. The gear assembly of the working end assembly enables the change of the drill press spindle rotation direction, allowing the small drill bit 9 to operate flexibly within the rectangular inner cavity. Combined with the split-design drill bit base 5, it facilitates assembly and ensures stable power transmission. Furthermore, the precise engagement and limiting of the gear assembly by the direction conversion block 6 further guarantees the stability and consistency of the small drill bit 9's movement trajectory during processing. This significantly reduces the problem of parts not meeting design expectations due to inconsistent processing conditions, ensuring dimensional compliance when processing such parts, and improving part qualification rate and production efficiency.

[0033] 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 chamfering device for rectangular internal cavity holes, characterized in that, The system includes a base assembly, a support assembly, and a working end assembly. The base assembly is used in conjunction with the drilling machine. The working end assembly is fixed to the upper side of the base assembly via the support assembly. The working end assembly includes a rotating connecting rod (7), a direction adapter block (6), an adapter block (1), a gear assembly, a small drill bit (9), and a drill bit base (5). The small drill bit (9) is fixed on the drill bit base (5) and is used in conjunction with the gear assembly. The adapter block (1) is fixed above the support assembly. The direction adapter block (6) is fixed on the adapter block (1) and is used in conjunction with the output wheel assembly. One end of the rotating connecting rod (7) is used in conjunction with the drilling machine, and the other end of the rotating connecting rod (7) is used in conjunction with the gear assembly. The gear assembly is used to change the rotation direction of the drilling machine spindle.

2. The chamfering device for rectangular inner cavity holes according to claim 1, characterized in that, The gear assembly includes a first gear and a second gear that mesh with each other. The first gear is connected to the other end of the rotating connecting rod (7), and the second gear meshes with the small drill bit (9).

3. The chamfering device for rectangular inner cavity holes according to claim 1, characterized in that, The base assembly includes a mating block (4), which is a convex thin plate structure. The middle part of the mating block (4) is provided with a circular hole, and the circular hole is provided with a first through hole around it. The circular hole is used for nesting and mating with a drilling machine, and the first through hole is used for fixing with a support assembly.

4. The chamfering device for rectangular inner cavity holes according to claim 3, characterized in that, The upper protrusion of the mating block (4) has an opening channel in the middle, which is connected to the circular hole. The upper protrusion of the mating block (4) has a second through hole perpendicular to the length of the opening channel. When the mating block (4) is properly mated with the drilling machine, a nut is used to rotate and tighten it in the second through hole.

5. The chamfering device for rectangular inner cavity holes according to claim 3, characterized in that, The support assembly includes a support column (3), one end of which is fixedly connected to a mating block (4), and the other end of which is fixedly connected to a connecting block.

6. The chamfering device for rectangular inner cavity holes according to claim 5, characterized in that, The working end assembly also includes a pad (2), which is located between the other end of the support column (3) and the connecting block. The thickness of the pad (2) is dynamically adjusted according to the size of the workpiece.

7. The chamfering device for rectangular inner cavity holes according to claim 1, characterized in that, The direction adapter block (6) is configured with a convex shape. The bottom edge of the front side of the direction adapter block (6) is provided with a semi-circular groove, which cooperates with the gear assembly. The upper protrusion of the front side of the direction adapter block (6) is connected to the connecting block. The back side of the direction adapter block (6) is provided with a rectangular groove.

8. The chamfering device for rectangular inner cavity holes according to claim 1, characterized in that, The working end assembly also includes a plug (8), which is disposed at the end of the drill bit base (5) and is used to seal the drill bit base (5).

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