A device for cleaning deep holes of castings

Abstract

The present disclosure relates to the technical field of casting processing, and one embodiment of the present disclosure provides a cast deep hole cleaning device, which comprises a frame body and a supporting table, the supporting table is fixed on the frame body, a clamping assembly is arranged on the supporting table, a transmission opening is arranged on the side surface of the frame body, a cleaning assembly is arranged on the frame body, the cleaning assembly comprises a lifting table, the lifting table is vertically and slidingly connected in the transmission opening, the lifting table is connected to the frame body through vertical linear driving, and the inner bottom of the lifting table is connected with a sliding seat through horizontal linear driving, a pair of connecting frames are arranged on the bottom of the sliding seat, and drill bit sleeves are arranged on the bottom of the connecting frames. Through the above technical scheme, the technical problem that the existing cleaning technology is dependent on shell shock machines, shot blasting machines or sand blasting machines is solved, but for castings containing fine holes and deep holes, these devices have obvious limitations.

Description

Technical Field

[0001] The embodiments disclosed herein relate to the technical field of casting processing, and more specifically, to a deep hole cleaning device for castings. Background Technology

[0002] In the field of investment casting, the silica sol process is widely used because it can produce complex structures and high-precision castings (such as aerospace components and precision mechanical parts). Thorough cleaning of the shell material (such as a mixed coating of silica sol and refractory materials) is a crucial step in ensuring casting quality. Residual shell material can affect the surface finish of the casting, clog pores, and even lead to subsequent assembly or operational malfunctions. As castings develop towards structures with multiple deep holes and fine pores (such as deep holes in hydraulic valve blocks and slender holes in sensors), the shortcomings of traditional shell cleaning methods are becoming increasingly apparent. Existing cleaning methods largely rely on shell-removing machines, shot blasting machines, or sandblasting machines. However, these devices have significant limitations for castings with fine or deep pores; they are unable to completely remove residues from the pores, may damage the casting structure, and their efficiency cannot meet the demands of mass production.

[0003] Shot blasting and shell-removing machines use mechanical impact to peel away the mold shell, but the impact force easily weakens in deep and narrow holes, resulting in the incomplete removal of mold shell residue adhering to the hole walls, especially in long and narrow holes where "cleaning dead zones" easily form. At the same time, rigid impact can easily cause bumps and deformation to weak parts of the hole walls, and even cause deep hole cracks, increasing the risk of casting scrap. Although sandblasting machines can achieve fine cleaning with high-pressure abrasives, their nozzles cannot penetrate deep into the holes, the abrasive is unevenly distributed in the hole, and mold shell residue is still easily left at the bottom of the deep hole. Moreover, the cleaning range of a single sandblasting machine is small, and frequent adjustments to the workstation are required for batch castings, resulting in low efficiency and failing to meet the pace requirements of large-scale production.

[0004] Therefore, the development of specialized cleaning devices that can effectively clean deep and fine holes in castings while balancing cleaning efficiency, structural protection, and overall efficiency has become an urgent need in the investment casting industry. Utility Model Content

[0005] To overcome the above-mentioned defects, the embodiments of this disclosure provide a deep hole cleaning device for castings, which solves the technical problem that existing cleaning methods mostly rely on shell vibrating machines, shot blasting machines or sandblasting machines, but these devices have obvious limitations for castings containing fine holes or deep holes.

[0006] According to one aspect, at least one embodiment of this disclosure provides a deep hole cleaning apparatus for castings, comprising: The frame and the support platform, wherein the support platform is fixed to the frame; A clamping assembly disposed on the support platform; A transmission port and a cleaning assembly are provided, wherein the transmission port is opened on the side surface of the frame and the cleaning assembly is disposed on the frame; The cleaning assembly includes a lifting platform, which is vertically slidably connected to the transmission port. The lifting platform is connected to the frame via a vertical linear drive. A sliding seat is connected to the bottom of the lifting platform via a horizontal linear drive. A pair of connecting frames are provided at the bottom of the sliding seat, and a drill bit sleeve is provided at the bottom of the connecting frame.

[0007] As a further technical solution, the bottom of the connecting frame is rotatably connected to a swing frame via a pin, a drive motor is vertically installed inside the swing frame, the drill bit sleeve is installed at the output end of the drive motor, and an extension frame is provided on the top of the sliding seat.

[0008] As a further technical solution, a pair of ear plates are provided on the side end face of the swing frame, and a telescopic cylinder is rotatably connected between the pair of ear plates and the extension frame via a pin, the telescopic cylinder having a certain tilt angle.

[0009] According to another aspect, in at least one embodiment of the present invention, the clamping assembly includes a pair of clamping frames, which are horizontally slidably connected to both sides of the support platform. A transmission cavity is provided in the bottom of the support platform, and a transmission rack is provided on the inner side of each clamping frame.

[0010] As a further technical solution, a driven gear is provided in the transmission cavity through a rotating shaft, the driven gear meshes with a pair of transmission racks, and a drive gear is provided at the other end of the rotating shaft of the driven gear.

[0011] As a further technical solution, a second cylinder is installed on one side of the support platform, and a drive rack is horizontally linearly slidably connected to the inner surface of the support platform, and the drive rack is connected to the output end of the second cylinder.

[0012] As a further technical solution, the drill bit ferrule is an impact ferrule.

[0013] As a further technical solution, the swing frame can be controlled by a telescopic cylinder to rotate 90° in a single direction.

[0014] The beneficial effects of the embodiments disclosed herein are as follows: In this disclosure, the cleaning component, through multi-directional adjustment and flexible adaptation design, solves the problem of the limitations of traditional equipment in cleaning deep and fine holes. The combination of vertical sliding of the lifting platform and horizontal movement of the sliding seat allows for precise adjustment of the drill bit position, ensuring the drill bit is aligned with the deep hole inlet. The swing frame, driven by a telescopic cylinder, can adjust its angle to adapt to deep holes with different inclination angles, allowing for drill bit switching without disassembly, avoiding the inefficiency caused by frequent tool changes. The impact drill bit chuck is securely fixed, effectively cleaning stubborn impurities inside the hole, reaching deep holes that are difficult for traditional equipment to access without damaging the hole wall. This structure covers the cleaning needs of deep holes of various sizes and angles, avoiding the cleaning dead zones of equipment such as vibrating shell machines and shot blasting machines, while ensuring cleaning accuracy, meeting the cleanliness requirements of deep hole machining of precision castings, and significantly improving the comprehensiveness and efficiency of deep hole cleaning. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.

[0016] Figure 1 This is a schematic diagram of a structure in one embodiment of the present disclosure; Figure 2 This is an isometric drawing of the present disclosure; Figure 3 This is an isometric sectional view of the present disclosure; Figure 4 Appendix to this disclosure Figure 2 Enlarged view of part A in the middle; In the diagram: 1. Frame; 2. Support platform; 3. Transmission port; 4. Cleaning assembly; 4-1. Lifting platform; 4-2. Sliding seat; 4-3. Connecting frame; 4-4. Drill bit sleeve; 4-5. Swing frame; 4-6. Drive motor; 4-7. Extension frame; 4-8. Ear plate; 4-9. Telescopic cylinder; 5. Clamping assembly; 5-1. Clamping frame; 5-2. Transmission chamber; 5-3. Transmission rack; 5-4. Driven gear; 5-5. Drive gear; 5-6. Second cylinder; 5-7. Drive rack. Detailed Implementation

[0017] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.

[0018] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0019] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0020] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0021] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to 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 disclosure.

[0022] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0023] like Figures 1-4 As shown, it illustrates a deep hole cleaning apparatus for castings according to an embodiment of the present disclosure, comprising: The frame 1 and the support platform 2 are fixed on the frame 1; Clamping assembly 5, which is disposed on the support platform 2; The transmission port 3 and the cleaning component 4 are provided on the side surface of the frame 1. The cleaning assembly 4 includes a lifting platform 4-1, which is vertically slidably connected to the transmission port 3. The lifting platform 4-1 is vertically linearly driven to the frame 1. A sliding seat 4-2 is horizontally linearly driven to the bottom of the lifting platform 4-1. A pair of connecting frames 4-3 are provided at the bottom of the sliding seat 4-2. A drill bit ferrule 4-4 is provided at the bottom of the connecting frame 4-3. A swing frame 4-5 is rotatably connected to the bottom of the connecting frame 4-3 via a pin. A drive motor 4-6 is vertically and downwardly installed inside the swing frame 4-5. The drill bit ferrule 4-4 is installed at the output end of the drive motor 4-6. An extension frame 4-7 is provided at the top of the sliding seat 4-2. A pair of ear plates 4-8 are provided on the side end face of the swing frame 4-5. A telescopic cylinder 4-9 is rotatably connected between the pair of ear plates 4-8 and the extension frame 4-7 via a pin. The telescopic cylinder 4-9 has a certain tilt angle.

[0024] In some examples, to achieve precise cleaning of deep holes of different specifications and angles in castings and to avoid incomplete cleaning caused by a single drill bit or fixed posture being unable to adapt to the deep hole requirements, a cleaning component 4 was designed. This component includes a transmission port 3 on the side surface of the frame 1, which provides a vertical sliding guide for the lifting platform 4-1. The lifting platform 4-1 can move up and down along the transmission port 3 through a vertical linear drive, adjusting the vertical height between the drill bit ferrule 4-4 and the deep hole in the casting, ensuring that the drill bit can be accurately aligned with the deep hole inlet, adapting to the deep hole cleaning requirements of different depths. The stable output of the vertical linear drive ensures that the lifting platform 4-1 moves smoothly, avoiding drill bit offset during height adjustment, which would affect the alignment accuracy.

[0025] The sliding seat 4-2 at the bottom of the lifting platform 4-1 can move horizontally via a horizontal linear drive, causing a pair of connecting brackets 4-3 at the bottom and the drill bit sleeve 4-4 to move closer to or further away from the casting, further fine-tuning the horizontal distance between the drill bit and the deep hole, so that the drill bit can smoothly extend into the deep hole. The connecting brackets 4-3 at the bottom of the sliding seat 4-2 provide an installation base for the drill bit sleeve 4-4 and the swing bracket 4-5. One of the connecting brackets 4-3 directly fixes the drill bit sleeve 4-4, and the other connecting bracket 4-3 is rotatably connected to the swing bracket 4-5 through a pin, forming an adjustable drill bit installation structure.

[0026] The vertically downward drive motor 4-6 inside the swing frame 4-5 provides rotational power to the drill bit. The drill bit ferrule 4-4 at the output end of the drive motor 4-6 can be fitted with impact drills of different specifications (such as straight shank drills and twist drills) to meet the cleaning needs of different types of impurities (such as iron filings and burrs) in deep holes. The extension frame 4-7 on the top of the sliding seat 4-2 and the ear plate 4-8 on the side end face of the swing frame 4-5 are connected to the telescopic cylinder 4-9 by a pin. The telescopic cylinder 4-9 is at a certain tilt angle. When the telescopic cylinder 4-9 extends or retracts, it can push the swing frame 4-5 to rotate around the pin at the bottom of the connecting frame 4-3, adjusting the tilt angle of the drill bit on the swing frame 4-5, and realizing the switching of two drill bits. When one drill bit is working, the other drill bit can swing away from the working area without disassembly, which can complete the switching without disassembly and greatly improve the cleaning efficiency. The pivot pin connection ensures that the swing frame 4-5 moves flexibly, avoiding jamming that could affect drill bit angle adjustment. The tilt angle of the telescopic cylinder 4-9 has been optimized to cover the common tilt range for deep holes, eliminating the need for additional cylinder installation position adjustments. The symmetrical layout of a pair of connecting frames 4-3 shortens the dual drill bit switching path and reduces adjustment time.

[0027] During operation, the lifting platform 4-1 and sliding seat 4-2 adjust the drill bit position, the telescopic cylinder 4-9 drives the swing frame 4-5 to switch drill bits, and the drive motor 4-6 drives the drill bit to rotate and clean deep holes. Multi-directional adjustment adapts to various deep hole specifications, dual drill bit switching improves efficiency, and the coordinated operation of all components achieves efficient deep hole cleaning, meeting production needs.

[0028] like Figures 1-4 As shown in the figure, the clamping assembly 5 in this embodiment includes a pair of clamping frames 5-1. The clamping frames 5-1 are horizontally slidably connected to both sides of the support platform 2. A transmission cavity 5-2 is provided in the bottom of the support platform 2. A transmission rack 5-3 is provided on the inner side of each clamping frame 5-1. A driven gear 5-4 is provided in the transmission cavity 5-2 and is rotatably connected to the transmission rack 5-3 by a rotating shaft. The driven gear 5-4 meshes with the pair of transmission racks 5-3. A drive gear 5-5 is provided at the other end of the rotating shaft of the driven gear 5-4. A second cylinder 5-6 is installed on one side of the support platform 2. A drive rack 5-7 is horizontally linearly slidably connected to the inner surface of the support platform 2. The drive rack 5-7 is connected to the output end of the second cylinder 5-6.

[0029] In some examples, to achieve rapid and stable clamping of castings of different sizes and to avoid uneven clamping force causing casting displacement or deformation, a clamping assembly 5 is designed. This assembly includes clamping frames 5-1 on both sides of the support platform 2 that are horizontally slidably connected and can move in opposite directions along the surface of the support platform 2 to clamp or release the casting. The transmission rack 5-3 fixed inside the clamping frame 5-1 extends into the transmission cavity 5-2 at the bottom of the support platform 2 and meshes with the driven gear 5-4 that rotates through the rotating shaft in the transmission cavity 5-2, forming a synchronous transmission structure. When the driven gear 5-4 rotates, it can drive the transmission racks 5-3 on both sides to move in opposite directions, thereby making the two clamping frames 5-1 move closer or further away synchronously, ensuring that the casting is always clamped in the center position of the support platform 2 and avoiding displacement that affects the alignment accuracy of the deep hole and the drill bit.

[0030] The drive gear 5-5 at the other end of the driven gear 5-4's rotating shaft meshes with the drive rack 5-7, which slides horizontally on the side surface of the support platform 2. The output end of the second cylinder 5-6 on one side of the support platform 2 is fixedly connected to the drive rack 5-7, forming a clamping drive structure. When the second cylinder 5-6 extends or retracts, it pushes the drive rack 5-7 to slide horizontally, causing the drive gear 5-5 to rotate. This, in turn, drives the transmission rack 5-3 and the clamping frame 5-1 through the driven gear 5-4, achieving rapid clamping and loosening of the casting. Compared with manual clamping, cylinder drive significantly improves clamping efficiency, and the clamping force is stable and controllable, avoiding damage or loosening of the casting due to uneven manual force application.

[0031] The transmission cavity 5-2 provides a protective space for the gear and rack, preventing iron filings generated during the cleaning process from entering the meshing area and affecting the transmission accuracy; the clamping surface of the clamping frame 5-1 can be designed as arc-shaped or equipped with anti-slip pads to increase the contact area with the casting, improve clamping stability, and at the same time avoid rigid contact that could cause scratches on the surface of the casting.

[0032] During operation, the second cylinder 5-6 drives the rack 5-7, which in turn drives the clamping frame 5-1 to clamp the casting synchronously via gear transmission. After cleaning, the casting is released by the reverse action. Synchronous alignment ensures precise positioning, rapid drive improves efficiency, and the coordinated operation of all components achieves stable clamping of the casting, meeting the needs of deep hole cleaning.

[0033] For example, such as Figure 1 As shown, the drill bit ferrule 4-4 is an impact ferrule.

[0034] In some examples, the drill ferrule 4-4 is an impact ferrule, which can meet the needs of impact drills to clean stubborn impurities in deep holes of castings. The impact ferrule, with its high-strength clamping structure, can firmly fix the impact drill, preventing slippage or loosening during high-frequency impact cleaning, ensuring that the impact force is stably transmitted to the drill tip, and efficiently breaking down stubborn impurities such as rust and clumps of iron filings in deep holes.

[0035] For example, such as Figure 1 As shown, the swing frame 4-5 can rotate 90° in a single direction by means of a telescopic cylinder 4-9.

[0036] In some examples, the swing frame 4-5 can be controlled by the telescopic cylinder 4-9 to rotate 90° in one direction, enabling precise switching and work avoidance between the two drill bits. When one drill bit is cleaning a deep hole, the telescopic cylinder 4-9 drives the swing frame 4-5 to rotate 90° in one direction, moving the other drill bit away from the work area and preventing the two drill bits from interfering with each other.

[0037] In actual use: Place the casting with the deep hole to be cleaned on the support platform 2, start the second cylinder 5-6 of the clamping assembly 5, push the drive rack 5-7 to slide horizontally along the side surface of the support platform 2, the drive rack 5-7 meshes with the drive gear 5-5 to drive it to rotate, thereby causing the driven gear 5-4 in the transmission cavity 5-2 to rotate synchronously, the driven gear 5-4 meshes with the transmission rack 5-3 on the inner side of the clamping frame 5-1, and drives the clamping frames 5-1 on both sides to move closer to the support platform 2 synchronously, and firmly clamp the casting in the center position. Based on the position and angle of the deep hole in the casting, the vertical height of the lifting platform 4-1 within the transmission port 3 is adjusted via a vertical linear drive, while the horizontal linear drive moves the sliding seat 4-2 at the bottom of the lifting platform 4-1, aligning the drill bit ferrule 4-4 at the bottom of the connecting frame 4-3 with the deep hole inlet. If the deep hole has an inclination angle, the telescopic cylinder 4-9 is activated, pushing the swing frame 4-5 to rotate around the pin at the bottom of the connecting frame 4-3 via the ear plate 4-8, adjusting the angle of the drill bit at the output end of the drive motor 4-6 to match the inclination direction of the deep hole. The drive motor 4-6 is then activated, rotating the impact drill bit in the drill bit ferrule 4-4 to penetrate the deep hole and clean impurities. During cleaning, the drill bit position can be finely adjusted via the lifting platform 4-1 and the sliding seat 4-2 to ensure no residue remains on the inner wall of the deep hole. If it is necessary to change the drill bit type, the telescopic cylinder 4-9 is activated again to adjust the angle of the swing frame 4-5. After cleaning, the second cylinder 5-6 reverses its movement, causing the clamping frame 5-1 to loosen, and the casting can be removed. The entire process achieves stable clamping of the casting and precise cleaning of deep holes.

[0038] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.

Claims

1. A deep hole cleaning device for castings, characterized in that, include: The frame (1) and the support platform (2) are fixed on the frame (1); A clamping assembly (5) is disposed on the support platform (2); The transmission port (3) and the cleaning component (4) are provided on the side surface of the frame (1). The cleaning assembly (4) includes a lifting platform (4-1), which is vertically slidably connected to the transmission port (3). The lifting platform (4-1) is vertically linearly driven connected to the frame (1). A sliding seat (4-2) is horizontally linearly driven connected to the bottom of the lifting platform (4-1). A pair of connecting frames (4-3) are provided at the bottom of the sliding seat (4-2). A drill bit sleeve (4-4) is provided at the bottom of the connecting frame (4-3).

2. The deep hole cleaning device for castings according to claim 1, characterized in that, The bottom of the connecting frame (4-3) is rotatably connected to the swing frame (4-5) via a pin. The swing frame (4-5) is vertically mounted with a drive motor (4-6) inside. The drill bit sleeve (4-4) is installed at the output end of the drive motor (4-6). The top of the sliding seat (4-2) is provided with an extension frame (4-7).

3. The deep hole cleaning device for castings according to claim 2, characterized in that, The swing frame (4-5) has a pair of ear plates (4-8) on its side end face. The pair of ear plates (4-8) and the extension frame (4-7) are rotatably connected by a telescopic cylinder (4-9) through a pin. The telescopic cylinder (4-9) has a certain tilt angle.

4. The deep hole cleaning device for castings according to claim 1, characterized in that, The clamping assembly (5) includes a pair of clamping frames (5-1), which are horizontally slidably connected to both sides of the support platform (2). A transmission cavity (5-2) is provided in the bottom of the support platform (2), and a transmission rack (5-3) is provided on the inner side of each clamping frame (5-1).

5. The deep hole cleaning device for castings according to claim 4, characterized in that, The transmission cavity (5-2) is provided with a driven gear (5-4) that is rotatably connected by a rotating shaft. The driven gear (5-4) meshes with a pair of transmission racks (5-3). The other end of the rotating shaft of the driven gear (5-4) is provided with a drive gear (5-5).

6. The deep hole cleaning device for castings according to claim 5, characterized in that, A second cylinder (5-6) is installed on one side of the support platform (2). A drive rack (5-7) is horizontally linearly slidably connected to the inner surface of the support platform (2). The drive rack (5-7) is connected to the output end of the second cylinder (5-6).

7. The deep hole cleaning device for castings according to claim 1, characterized in that, The drill bit ferrule (4-4) is an impact ferrule.

8. The deep hole cleaning device for castings according to claim 3, characterized in that, The swing frame (4-5) can rotate 90° in a single direction by means of a telescopic cylinder (4-9).

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