Housing product internal cavity polishing station

Abstract

This invention provides a grinding station for the interior cavity of shell-type products, including a mounting mechanism and a grinding mechanism. The mounting mechanism has an actuator that can move along the X, Y, and Z axes. The grinding mechanism is mounted on the actuator. The moving actuator drives the grinding mechanism to extend into the shell cavity to grind the inner wall of the shell cavity. The grinding mechanism includes a self-rotating rigid first grinding component. A secondary grinding assembly is provided on one side of the first grinding component, coaxially arranged with the first grinding component, and includes a flexible second grinding component. When unfolded, the second grinding component is flush with or protrudes from the grinding end face of the first grinding component. During processing, the inner wall of the shell cavity is first ground by the first grinding component, and then the second grinding component is unfolded for a second grinding. During the unfolding process, the grinding mechanism does not need to exit the shell cavity. The mounting mechanism can be a three-axis machine tool or a robotic arm, which moves the actuator to drive the grinding mechanism into the shell cavity.

Description

Technical Field

[0001] This invention relates to the field of polishing technology, specifically to a polishing station for the inner cavity of shell-type products. Background Technology

[0002] Shell-shaped workpieces are widely used in machinery, automobiles, hydraulic systems, and fluid equipment. These workpieces typically have an internal cavity structure, and after casting or machining, the surface of the inner cavity sidewalls often has a noticeable rough layer, machining texture, and microburrs. Therefore, after the shell-shaped workpieces are formed, the inner cavity sidewalls usually need to be ground to remove uneven areas and improve surface quality, thereby meeting subsequent assembly or usage requirements. In existing technology, grinding of the inner cavity sidewalls of shells is usually achieved by a grinding structure mounted on a machine tool or robotic arm extending into the shell to grind the inner cavity sidewalls, thus achieving surface finishing.

[0003] However, in actual processing, most existing grinding structures only have a single grinding tool, which performs a single grinding process on the inner wall of the housing after entering the cavity. Because the inner cavity is relatively enclosed, the grinding structure has limited space to move within it. After completing one grinding pass, if further finishing of the inner wall is required, it often necessitates changing to a different type of grinding tool, such as a flexible grinding tool for fine finishing. In this case, it is usually necessary to remove the grinding structure from the housing cavity, reinstall it, or replace the tool before re-entering the housing for processing.

[0004] In the above processing methods, on the one hand, the existing grinding structure lacks a structural design that can achieve secondary grinding on the same structure, making it difficult to directly carry out subsequent fine finishing processing after one grinding. On the other hand, since the inner cavity of the housing is a relatively closed processing environment, it is inconvenient to replace or adjust the grinding tools inside the housing. When secondary grinding is required, it is often necessary to repeatedly exit and enter the inner cavity of the housing, which not only increases the number of operation steps in the processing process, but also affects the continuity of the processing process, thereby reducing the overall grinding efficiency.

[0005] Therefore, a grinding station for the inner cavity of shell-type products is provided to address the above-mentioned issues. Summary of the Invention

[0006] This invention addresses the problems of existing grinding structures for the inner cavity sidewalls of shell-type workpieces, which can only perform grinding once and lack a secondary grinding structure. Furthermore, when secondary finishing processing is required, the grinding structure needs to be removed from the inner cavity of the shell to change tools, which is inconvenient and affects the continuity and efficiency of processing. Therefore, this invention provides a grinding station for the inner cavity of shell-type products.

[0007] The present invention solves the above-mentioned technical problems through the following technical solutions:

[0008] This invention provides a grinding station for the interior cavity of shell-type products, including a mounting mechanism. The mounting mechanism is provided with an execution end that can move in the X-axis, Y-axis and Z-axis directions. A grinding mechanism is mounted on the execution end. The moving execution end drives the grinding mechanism to extend into the interior of the shell.

[0009] The grinding mechanism includes a rigid first grinding component that can rotate on its own, a secondary grinding component is provided on one side of the first grinding component, the secondary grinding component is coaxially arranged with the first grinding component, and the secondary grinding component includes a flexible second grinding component that, when unfolded, is flush with or protrudes from the grinding end face of the first grinding component.

[0010] The rigid first grinding component grinds the inner wall of the housing cavity once, and then the flexible second grinding component is unfolded to grind the inner wall of the housing cavity a second time. During the unfolding process, the grinding structure does not need to be removed from the inner wall of the housing cavity, which improves the grinding efficiency.

[0011] In this technical solution, the mounting mechanism is a three-axis machine tool that can move in the X, Y and Z axis directions or a robotic arm that can move with multiple degrees of freedom.

[0012] During the processing, the shell-type workpiece is first fixedly installed on the corresponding fixture to ensure the stability of the workpiece during the grinding process. This keeps the shell in a fixed position during the processing and prevents displacement or shaking during grinding, thus providing stable processing conditions for subsequent grinding operations.

[0013] Specifically, an installation mechanism is provided. This mechanism is used to install the grinding mechanism and drive it into the inner cavity of the housing, enabling the grinding mechanism to grind the inner wall of the cavity. The installation mechanism can select different types of drive equipment, such as machine tools or robotic arms, according to actual processing needs. The movement of the corresponding equipment drives the grinding mechanism to move into the housing, thereby realizing the position adjustment and processing operation of the grinding mechanism within the inner cavity of the housing.

[0014] In this technical solution, the first grinding component is connected to the execution end through a connecting part. The connecting part includes a drive motor, which is mounted on the execution end. A drive spindle is fixed on the output end of the drive motor, and a first fixing rod is fixed on the end of the drive spindle. The first fixing rod is fixed on the first grinding component through a connecting shell.

[0015] The secondary polishing component is mounted on the connecting shell.

[0016] The first grinding component, which is connected to the connecting shell, is driven by a drive motor to rotate, thereby achieving the grinding of the inner wall of the shell-type workpiece.

[0017] In this technical solution, the secondary grinding component includes a drive unit, which is located inside the connecting shell. The drive unit drives the second grinding component to expand or contract through the transmission unit.

[0018] The transmission unit is located outside the connecting housing, and the connection between the drive unit and the transmission unit extends through the side wall of the connecting housing.

[0019] In this technical solution, the drive unit includes a drive rod with a self-driven telescopic function. A movable shaft is fixed on the telescopic end of the drive rod, and at least one transmission rod is fixed on the end of the movable shaft. The transmission rod passes through the transmission slot on the extension shell and is connected to one side of the transmission unit.

[0020] In this technical solution, the telescopic end of the drive rod drives one side of the transmission part to slide on the connecting shell, thereby driving the other side of the transmission part to move synchronously, pushing the extension unit connected to the second grinding part to extend or retract, thereby driving the second grinding part to extend or retract.

[0021] The transmission unit includes a transmission ring, which is slidably sleeved on the outer wall of the connecting shell. The end of the transmission rod is fixed on the transmission ring, and multiple transmission units arranged in a ring array are connected to the transmission ring.

[0022] The two ends of the transmission unit are rotatably connected to the transmission ring and the extension unit, respectively, and the second grinding component is fixed on the end of the extension unit.

[0023] In this technical solution, the transmission unit includes a synchronizing rod, and the two ends of the synchronizing rod are rotatably connected to the transmission ring and the extension unit through a first connecting member and a second connecting member, respectively.

[0024] In this technical solution, the number of extension units and transmission units is the same, and the extension units are also arranged in a ring array. The extension unit includes an inner connecting rod and an outer connecting rod. One of the inner connecting rod and the outer connecting rod is fixed on the outer wall of the connecting shell; the other is connected to the second transmission component and fixedly connected to the second grinding component. The outer connecting rod is slidably sleeved on the surface of the inner connecting rod.

[0025] In this technical solution, a second grinding element is fixed to the end of the inner connecting rod or the outer connecting rod that is not fixedly connected to the connecting shell;

[0026] The second grinding component includes an arc-shaped mounting plate with brush bristles fixed on it. The mounting plate is fixed to the end of the inner or outer connecting rod by a second fixing rod.

[0027] Specifically, the first grinding component is a grinding wheel, the mounting plate has an arc-shaped structure, the outer connecting rod and the inner connecting rod are distributed along the radial direction of the grinding wheel, and the extension shell on the end of the connecting shell is fixed at the center position of the grinding wheel.

[0028] This technical solution also includes a dust collection assembly, which includes an annular dust collection hood. The dust collection hood is fitted onto the outside of the connecting shell. At least one external pipe is connected to the side of the dust collection hood away from the first grinding part. The external pipe is connected to the air pump. The dust collection hood is fixed to other areas of the drive motor or actuator that do not rotate synchronously with the drive spindle by at least one mounting rod. That is, the dust collection hood can be fixed to other areas of the drive motor or actuator that do not rotate synchronously with the drive spindle.

[0029] An air pump creates airflow at the dust collection hood, drawing most of the dust from the grinding process into the hood, thus completing the dust extraction. This is especially effective when grinding aluminum parts, preventing excessive dust and providing a degree of explosion-proof protection.

[0030] This technical solution also includes a vibration assembly, which includes a vibration part and a driving part. After the driving part drives the vibration part to vibrate, it strikes the extension unit.

[0031] The vibration unit is located on one side of the corresponding extension unit, and the drive unit is fixed on the outer connecting rod or inner connecting rod that is not fixedly connected to the connecting shell. The vibration unit is installed at the connection between the grinding wheel and the connecting shell or on the connecting shell.

[0032] The drive unit moves synchronously with the inner or outer connecting rod that is fixedly connected to it, thereby driving the vibrating unit to strike the corresponding outer or inner connecting rod.

[0033] In this technical solution, the vibration part includes a bearing plate, which is fixed to the connection between the grinding wheel and the connecting shell or to the connecting shell by a third fixing rod. At least one guide telescopic rod is fixed on the bearing plate, and a spring is sleeved on the surface of the guide telescopic rod.

[0034] The end of the guide telescopic rod is fixed to the surface of the movable plate. At least one end of the movable plate extends toward one side of the extension unit and is fixed with a striking element that can overlap with the surface of the extension unit. Multiple first transmission blocks are fixed on the outer wall of the movable plate near the extension unit.

[0035] The drive unit includes a second transmission block. The moving second transmission block can be connected to the first transmission block unit and can extend between two adjacent first transmission blocks. That is, the first transmission block and the second transmission block have a partial overlap in their orthogonal projections along the radial direction of the grinding wheel. The second transmission block is fixed to the outer wall of the outer connecting rod or the inner connecting rod by a rod. The first transmission block and the second transmission block are preferably spherical or have a circular arc-shaped surface.

[0036] Preferably, the striking element is a self-rotating wheel or a spherical block structure, and it can also rotate.

[0037] Specifically, when the inner connecting rod is fixed to the extended shell on the connecting shell, the synchronizing rod is rotatably connected to the outer connecting rod, and the striking element overlaps with or is on the surface of the outer connecting rod. The mounting plate is fixed to the end of the outer connecting rod by the second fixing rod.

[0038] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of the present invention.

[0039] The positive and progressive effects of this invention are as follows:

[0040] In this technical solution, the grinding structure is equipped with a rigid first grinding component and a flexible second grinding component. During the processing, the rigid first grinding component first grinds the inner cavity sidewall of the housing. Due to the high structural rigidity and grinding capability of the first grinding component, it can effectively remove material from the inner cavity sidewall, eliminating the rough layer and uneven areas formed after casting or machining, thereby forming a relatively uniform basic machined surface on the inner cavity sidewall. Subsequently, the flexible second grinding component is deployed to perform a second grinding on the inner cavity sidewall after the first grinding. When the second grinding component contacts the inner cavity sidewall, it performs micro-grinding and finishing treatment on the surface in a flexible contact manner, thereby removing the micro-burrs and directional grinding textures formed during the first grinding process, making the surface texture of the inner cavity sidewall more uniform, further reducing surface roughness, and improving the surface quality of the inner cavity sidewall.

[0041] Meanwhile, the second grinding component is designed as a deployable structure, allowing it to unfold directly inside the housing cavity and participate in processing after the first grinding component completes one grinding cycle. This eliminates the need for the grinding structure to be removed and re-entered from the housing cavity between grinding cycles, thus avoiding the time consumption associated with tool changes or repositioning in traditional processing. By sequentially completing both rigid grinding and flexible finishing processes on the same grinding structure, not only is the processing efficiency of the housing cavity sidewall improved, but errors caused by equipment start-up and shutdown and workpiece repositioning are also reduced. This enhances the continuity and processing stability of the housing cavity grinding process, thereby improving overall processing quality and production efficiency. Attached Figure Description

[0042] Figure 1 This is a schematic diagram of the overall structure of the grinding mechanism of the present invention;

[0043] Figure 2 For the present invention Figure 1 A magnified schematic diagram of the structure at point I;

[0044] Figure 3 This is a schematic diagram of the connection structure between the connecting shell and the first grinding element of the present invention;

[0045] Figure 4 For the present invention Figure 3 A magnified schematic diagram of the structure at point J;

[0046] Figure 5 For the present invention Figure 3 A top-view structural diagram;

[0047] Figure 6 For the present invention Figure 5 Schematic diagram of the cross-sectional structure at point AA;

[0048] Figure 7 For the present invention Figure 6 A magnified schematic diagram of the structure at point K;

[0049] Figure 8 For the present invention Figure 1 A schematic diagram of the structure after adding the dust collection component;

[0050] Figure 9 For the present invention Figure 8 A structural diagram from another perspective;

[0051] Figure 10 For the present invention Figure 8 A top-view structural diagram;

[0052] Figure 11 For the present invention Figure 10 Schematic diagram of the cross-sectional structure at BB;

[0053] Figure 12 This is an overall schematic diagram of the installation mechanism of the present invention when it is a robotic arm;

[0054] Figure 13 For the present invention Figure 12 A side view structural diagram.

[0055] Explanation of reference numerals in the attached figures

[0056] 1. Drive motor; 11. Drive spindle;

[0057] 2. Connecting shell; 21. First fixing rod; 22. Extension shell; 221. Transmission through groove;

[0058] 3. Extension unit; 31. Inner connecting rod; 32. Outer connecting rod;

[0059] 4. Transmission section; 41. Transmission unit; 411. Synchronizing rod; 412. First outer sleeve; 413. First crossbar; 414. First mounting plate; 415. Second outer sleeve; 416. Second crossbar; 417. Second mounting plate; 42. Transmission ring;

[0060] 5. Drive rod; 51. Moving shaft; 52. Transmission rod;

[0061] 6. Mounting plate; 61. Second fixing rod; 62. Brush bristles;

[0062] 7. Dust collection assembly; 71. Dust collection hood; 72. External connecting pipe; 73. Mounting rod;

[0063] 8. Grinding wheel;

[0064] 9. Vibration assembly; 91. Bearing plate; 92. Guide telescopic rod; 93. Moving plate; 94. Striking component; 95. First transmission block; 96. Second transmission block; 97. Third fixing rod;

[0065] 101. Installation mechanism; 102. Grinding mechanism. Detailed Implementation

[0066] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments.

[0067] like Figure 1 and Figure 12 As shown, the shell-type product internal cavity grinding station includes a mounting mechanism 101. The mounting mechanism 101 is provided with an execution end that can move in the X-axis, Y-axis and Z-axis directions. A grinding mechanism 102 is mounted on the execution end. The moving execution end drives the grinding mechanism 102 to extend into the shell.

[0068] The grinding mechanism 102 includes a rigid first grinding component that can rotate on its own, a secondary grinding component is provided on one side of the first grinding component, the secondary grinding component is coaxially arranged with the first grinding component, and the secondary grinding component includes a flexible second grinding component that, when unfolded, is flush with or protrudes from the grinding end face of the first grinding component.

[0069] During the processing, the rigid first grinding component is first used to grind the inner cavity sidewall of the housing. Because the first grinding component has high structural rigidity and strong grinding ability, it can effectively grind the surface when in contact with the inner cavity sidewall to remove the rough layer or uneven area on the inner cavity sidewall, so that the inner cavity sidewall forms a relatively uniform basic machining surface.

[0070] After the first polishing is completed, a flexible second polishing component is deployed and brought into contact with the inner wall of the housing to perform a second polishing process on the surface after the first polishing. During the processing, the second polishing component acts on the inner wall of the housing in a flexible contact manner, which can further refine the surface formed after the first polishing and make the surface texture more uniform.

[0071] During the transition from the first grinding component to the second grinding component, the grinding structure remains inside the housing cavity without needing to be removed and re-entered. This allows both grinding processes to be completed continuously in the same location. This continuous processing method reduces interruptions in the processing, making the grinding process of the inner cavity sidewalls more seamless and improving overall processing efficiency.

[0072] Example 1

[0073] In this embodiment, the mounting mechanism 101 is a three-axis machine tool that can move in the X, Y and Z axis directions or a robotic arm that can move with multiple degrees of freedom.

[0074] During processing, shell-type workpieces are fixed on the corresponding fixtures.

[0075] In this embodiment, the mounting mechanism 101 is used to mount the grinding mechanism 102 and drive the grinding mechanism 102 into the inner cavity of the housing. The mounting mechanism 101 can adopt different types of driving devices according to actual processing requirements.

[0076] When the mounting mechanism 101 is a three-axis machine tool, the grinding mechanism 102 is mounted on the execution end of the three-axis machine tool. The movement of the three-axis machine tool in the X, Y, and Z axes drives the grinding mechanism 102 into the housing, allowing it to enter the inner cavity of the housing and grind the inner wall of the cavity. By controlling the movement along the three coordinate axes, the three-axis machine tool enables the grinding mechanism 102 to move along a preset path within the housing cavity, thereby achieving processing at different locations on the inner wall of the housing cavity.

[0077] like Figure 12 and Figure 13 As shown, when the mounting mechanism 101 is a robotic arm, the grinding mechanism 102 is mounted on the end effector of the robotic arm. The movement of the robotic arm drives the grinding mechanism 102 to extend into the housing, allowing it to move within the housing cavity and grind the inner wall of the cavity. The robotic arm can adjust its spatial position and posture through multi-joint linkage, thereby driving the grinding mechanism 102 to adjust its position within the housing cavity to adapt to the grinding requirements of the inner wall of housing-type workpieces with different structural shapes.

[0078] like Figure 1 , Figure 2 and Figure 7 As shown, the first grinding component is connected to the execution end through a connecting part. The connecting part includes a drive motor 1, which is mounted on the execution end. A drive spindle 11 is fixed on the output end of the drive motor 1, and a first fixing rod 21 is fixed on the end of the drive spindle 11. The first fixing rod 21 is fixed on the first grinding component through a connecting shell 2.

[0079] The secondary polishing component is installed on the connecting shell 2.

[0080] The first grinding component connected to the connecting shell 2 is driven by the drive motor 1 to rotate, thereby achieving the grinding of the inner wall of the shell-type workpiece.

[0081] Example 2

[0082] like Figure 3 As shown, the secondary polishing assembly includes a drive unit, which is located inside the connecting shell 2. The drive unit drives the second polishing component to expand or contract through the transmission unit 4.

[0083] The transmission part 4 is located outside the connecting shell 2, and the connection between the drive part and the transmission part 4 extends through the side wall of the connecting shell 2.

[0084] When the drive unit is running, it drives the second grinding component to unfold or retract through the transmission unit 4. When the first grinding component is used for grinding, the second grinding component is in a retracted state, and the grinding end face of the first grinding component protrudes from the grinding end face of the second grinding component.

[0085] The drive unit includes a drive rod 5 with a self-driven telescopic function. A movable shaft 51 is fixed on the telescopic end of the drive rod 5. At least one transmission rod 52 is fixed on the end of the movable shaft 51. The transmission rod 52 passes through the transmission slot 221 on the extension shell 22 and is connected to one side of the transmission unit 4. The drive rod 5 is fixed in the inner cavity of the connecting shell 2.

[0086] The drive rod 5 is preferably one of an electric push rod and a pneumatic rod.

[0087] The moving shaft 51 on the drive rod 5 moves, thereby extending or shortening the entire drive rod 5, driving the transmission part 4 to run.

[0088] Specifically, the telescopic end of the drive rod 5 drives one side of the transmission part 4 to slide on the connecting shell 2, thereby driving the other side of the transmission part 4 to move synchronously, pushing the extension unit 3 connected to the second grinding part to extend or retract, thereby driving the second grinding part to extend or retract.

[0089] The transmission unit 4 includes a transmission ring 42, which is slidably sleeved on the outer wall of the connecting shell 2. The end of the transmission rod 52 is fixed on the transmission ring 42, and multiple transmission units 41 arranged in a ring array are connected to the transmission ring 42.

[0090] The two ends of the transmission unit 41 are rotatably connected to the transmission ring 42 and the extension unit 3, respectively, and the second grinding component is fixed on the end of the extension unit 3.

[0091] When the moving shaft 51 moves, it drives the transmission ring 42 to move. The moving transmission ring 42 pushes the extension unit 3 to extend or retract through the transmission unit 41, thereby driving the second grinding part to move synchronously.

[0092] The transmission unit 41 includes a synchronizing rod 411, the two ends of which are rotatably connected to the transmission ring 42 and the extension unit 3 via a first connector and a second connector, respectively.

[0093] The number of extension units 3 and transmission units 41 is the same, and the extension units 3 are also arranged in a ring array. The extension unit 3 includes an inner connecting rod 31 and an outer connecting rod 32. One of the inner connecting rod 31 and the outer connecting rod 32 is fixed on the outer wall of the connecting shell 2; the other is connected to the second transmission component and fixedly connected to the second grinding component. The outer connecting rod 32 is slidably sleeved on the surface of the inner connecting rod 31.

[0094] Specifically, the first connecting member includes a first crossbar 413, the surface of which is fitted with a first outer sleeve 412, and both sides of the first crossbar 413 are fixed to the transmission ring 42 by a first mounting plate 414.

[0095] The second connector includes a second crossbar 416, with a second outer sleeve 415 fitted onto the surface of the second crossbar 416. A second mounting plate 417 is fixed on both sides of the second crossbar 416. The second mounting plate 417 is fixed on the inner connecting rod 31 or the outer connecting rod 32, which is not fixedly connected to the connecting shell 2. That is, when the inner connecting rod 31 is fixed on the connecting shell 2, the second mounting plate 417 is fixed on the outer connecting rod 32. The two ends of the synchronizing rod 411 are respectively fixed on the first outer sleeve 412 and the second outer sleeve 415.

[0096] Rotational connection is achieved by the rotation of the first outer sleeve 412 on the surface of the first crossbar 413 and by the rotation of the second outer sleeve 415 on the surface of the second crossbar 416.

[0097] A second grinding element is fixed to the end of the inner connecting rod 31 or the outer connecting rod 32 that is not fixedly connected to the connecting shell 2;

[0098] The second grinding component includes an arc-shaped mounting plate 6, on which brush bristles 62 are fixed. The mounting plate 6 is fixed to the end of the inner connecting rod 31 or the outer connecting rod 32 by a second fixing rod 61.

[0099] When the movable shaft 51 on the output end of the drive rod 5 moves toward one side of the first grinding part, it drives the transmission ring 42 to move synchronously toward one side of the first grinding part. This, through the synchronizing rod 411, pushes the inner connecting rod 31 or the outer connecting rod 32, which is rotatably connected to it, to move toward one side of the edge of the first grinding part. This causes the second grinding part to unfold, so that the grinding end face of the second grinding part is flush with or protrudes from the grinding end face of the first grinding part, thus completing the unfolding of the second grinding part for secondary grinding.

[0100] Specifically, the first grinding component is preferably a grinding wheel 8, the mounting plate 6 has an arc-shaped structure, the outer connecting rod 32 and the inner connecting rod 31 are distributed radially along the grinding wheel 8, and the extension shell 22 on the end of the connecting shell 2 is fixed at the center position of the grinding wheel 8.

[0101] Specifically, the end of the moving shaft 51 extends into the interior of the extension shell 22 extending from the end of the connecting shell 2. The extension shell 22 is integrally formed with the connecting shell 2 and is fixed on the first grinding part. The transmission groove 221 is opened on the extension shell 22. The moving shaft 51 drives the transmission ring 42 to move synchronously through the transmission rod 52.

[0102] Preferably, the surface of the connecting groove at the connection between the drive unit and the transmission unit 4 is covered with a soft covering layer. One end of the connecting soft sleeve is fixed to the end of the outer connecting rod 32 that is sleeved with the inner connecting rod 31, and the other end is fixed to one end of the inner connecting rod 31. Both the covering layer and the connecting soft sleeve can be folded. The cross-section of the connecting soft sleeve and the cross-section of the outer connecting rod 32 are similar in geometric relationship.

[0103] The cover and connecting sleeve prevent dust from entering the inner cavity of the connecting shell 2 and the connection between the outer connection and the inner connecting rod 31.

[0104] Example 3

[0105] like Figures 8-11 As shown, it also includes a dust collection assembly 7, which includes an annular dust collection hood 71. The dust collection hood 71 is sleeved on the outside of the connecting shell 2. At least one external pipe 72 is connected to the side of the dust collection hood 71 away from the first grinding part. The external pipe 72 is connected to the air pump. The dust collection hood 71 is fixed in other areas of the drive motor 1 or the actuator that do not rotate synchronously with the drive spindle 11 by at least one mounting rod 73. That is, the dust collection hood 71 can be fixed in other areas of the drive motor 1 or the actuator that do not rotate synchronously with the drive spindle 11.

[0106] An air pump creates airflow at the dust collection hood 71, drawing most of the dust from the grinding process into the hood, thus completing the dust collection process. This is especially effective when grinding aluminum parts, preventing excessive dust and providing a certain degree of explosion-proof protection.

[0107] Example 4

[0108] like Figure 4 and Figure 7 As shown, it also includes a vibration assembly 9, which includes a vibration part and a driving part. The vibration part is disposed on the extension unit 3, and the driving part drives the vibration part to vibrate and then strikes the extension unit 3.

[0109] The vibration unit is located on one side of the corresponding extension unit 3, and the drive unit is fixed on the outer connecting rod 32 or the inner connecting rod 31 that is not fixedly connected to the connecting shell 2. The vibration unit is installed at the connection between the grinding wheel 8 and the connecting shell 2 or on the connecting shell 2.

[0110] The drive unit moves synchronously with the inner connecting rod 31 or the outer connecting rod 32 that is fixedly connected to it, thereby driving the vibration unit to strike the corresponding outer connecting rod 32 or the inner connecting rod 31.

[0111] The vibration component 9 strikes the extension unit 3 during the unfolding or retraction of the second grinding component, thereby micro-vibrating the second grinding component and preventing residual dust and debris on the second grinding component from affecting the grinding of the inner cavity sidewall of the shell-type workpiece.

[0112] Specifically, the vibrating part includes a bearing plate 91, which is fixed to the connection between the grinding wheel 8 and the connecting shell 2 or to the connecting shell 2 by a third fixing rod 97. At least one guide telescopic rod 92 is fixed on the bearing plate 91. A spring is sleeved on the surface of the guide telescopic rod 92, and the two ends of the spring are respectively fixed to the two ends of the guide telescopic rod 92. When the spring does not deform, the striking member 94 overlaps with the surface of the outer connecting rod 32 or the inner connecting rod 31. At the same time, when the extension unit 3 rotates synchronously with the first grinding member, the spring maintains its own deformation elasticity, keeping the length of the guide telescopic rod 92 unchanged, so that the striking member 94 will not strike the extension unit 3.

[0113] The end of the guide telescopic rod 92 is fixed to the surface of the movable plate 93. At least one end of the movable plate 93 extends toward one side of the extension unit and is fixed with a striking member 94 that can overlap with the surface of the extension unit 3. A plurality of first transmission blocks 95 are fixed on the outer wall of the movable plate 93 near the extension unit 3.

[0114] The drive unit includes a second transmission block 96. The moving second transmission block 96 can be unitized with the first transmission block 95 and can extend between two adjacent first transmission blocks 95. That is, the orthogonal projections of the first transmission block 95 and the second transmission block 96 in the radial direction along the grinding wheel 8 partially overlap. The second transmission block 96 is fixed to the outer wall of the outer connecting rod 32 or the inner connecting rod 31 by a rod. The first transmission block 95 and the second transmission block 96 are preferably spherical or have a circular arc surface.

[0115] Preferably, the striking element 94 is a self-rotating walking wheel or a spherical block structure, and it can also rotate.

[0116] Specifically, when the inner connecting rod 31 is fixed on the extension shell 22 on the connecting shell 2, the synchronizing rod 411 is rotatably connected to the outer connecting rod 32, and at the same time, the striking element 94 overlaps with the outer connecting rod 32 or the surface of the outer connecting rod 32, and the mounting plate 6 is fixed to the end of the outer connecting rod 32 by the second fixing rod 61.

[0117] When the transmission ring 42 pushes the outer connecting rod 32 to slide on the surface of the inner connecting rod 31 via the synchronizing rod 411, the second transmission block 96 located on the surface of the outer connecting rod 32 moves synchronously. After the second transmission block 96 overlaps with the first transmission block 95 at the edge position, it continues to move, thereby pushing the first transmission block 95 to move away from the extension unit 3, thereby driving the moving plate 93 to move synchronously. The striking element 94 on the moving plate 93 also moves synchronously. At this time, the telescopic rod extends and the spring deforms. When the second transmission block 96 passes the highest point of the first transmission block 95, the telescopic rod shortens under the action of the spring, thereby causing the striking element 94 to start to reset. Until the second transmission block 96 completely passes the first transmission block 95, the striking element 94 re-overlaps with the outer connecting rod 32, thereby completing one strike, which causes the brush filament 62 to vibrate once.

[0118] When the second transmission block 96 is located between the two first transmission blocks 95, the striking block rotates on the surface of the moving outer connecting rod 32.

[0119] This invention is not limited to the embodiments described above. Any changes in shape or structure shall fall within the protection scope of this invention. The protection scope of this invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of this invention, but all such changes and modifications shall fall within the protection scope of this invention.

Claims

1. A grinding station for the interior cavity of a shell-type product, comprising a mounting mechanism (101), wherein the mounting mechanism (101) is provided with an actuator that can move in the X-axis, Y-axis and Z-axis directions, and a grinding mechanism (102) is mounted on the actuator. The moving actuator drives the grinding mechanism (102) to extend into the interior of the shell, characterized in that: The grinding mechanism (102) includes a rigid first grinding component that can rotate on its own, a secondary grinding component is provided on one side of the first grinding component, the secondary grinding component is coaxially arranged with the first grinding component, and the secondary grinding component includes a flexible second grinding component that, when unfolded, is flush with or protrudes from the grinding end face of the first grinding component. The first grinding component is connected to the execution end through a connecting part. The connecting part includes a drive motor (1). The drive motor (1) is mounted on the execution end, and a drive spindle (11) is fixed on the output end of the drive motor (1). A first fixing rod (21) is fixed on the end of the drive spindle (11). The first fixing rod (21) is fixed on the first grinding component through a connecting shell (2). The secondary polishing assembly is mounted on the connecting shell (2); The secondary polishing assembly includes a drive unit, which is located inside the connecting shell (2). The drive unit drives the second polishing component to expand or contract through the transmission unit (4). The drive unit includes a drive rod (5) with a self-driven telescopic function. A movable shaft (51) is fixed on the telescopic end of the drive rod (5). At least one transmission rod (52) is fixed on the end of the movable shaft (51). The transmission rod (52) passes through the transmission slot (221) on the extension shell (22) and is connected to one side of the transmission unit (4). The transmission part (4) includes a transmission ring (42), which is slidably sleeved on the outer wall of the connecting shell (2). The end of the transmission rod (52) is fixed on the transmission ring (42), and multiple transmission units (41) arranged in a ring array are connected on the transmission ring (42). The two ends of the transmission unit (41) are rotatably connected to the transmission ring (42) and the extension unit (3) respectively, and the second grinding component is fixed on the end of the extension unit (3); The transmission unit (41) includes a synchronizing rod (411), the two ends of which are rotatably connected to the transmission ring (42) and the extension unit (3) respectively through a first connecting member and a second connecting member. The extension unit (3) includes an inner connecting rod (31) and an outer connecting rod (32). One of the inner connecting rod (31) and the outer connecting rod (32) is fixed on the outer wall of the connecting shell (2); the other is connected to the second transmission member. The outer connecting rod (32) is slidably sleeved on the surface of the inner connecting rod (31). It also includes a vibration component (9), which includes a vibration part and a driving part. After the driving part drives the vibration part to vibrate, it strikes the extension unit (3). The vibration part is set on one side of the corresponding extension unit (3), the driving part is fixed on the outer connecting rod (32) or the inner connecting rod (31) that is not fixedly connected to the connecting shell (2), and the vibration part is installed at the connection between the first grinding part and the connecting shell (2) or on the connecting shell (2). The vibrating part includes a bearing plate (91), which is fixed to the connection between the first grinding part and the connecting shell (2) or the connecting shell (2) by a third fixing rod (97). At least one guide telescopic rod (92) is fixed on the bearing plate (91), and a spring is sleeved on the surface of the guide telescopic rod (92). The end of the guide telescopic rod (92) is fixed to the surface of the moving plate (93). At least one end of the moving plate (93) extends toward one side of the extension unit (3) and is fixed with a striking element (94) that can overlap with the surface of the extension unit (3). A plurality of first transmission blocks (95) are fixed on the outer wall of the moving plate (93) near the extension unit (3). The drive unit includes a second transmission block (96), which can cooperate with the first transmission block (95) and can extend between two adjacent first transmission blocks (95). The second transmission block (96) is fixed on the outer wall of the outer connecting rod (32) or the inner connecting rod (31). The first transmission block (95) and the second transmission block (96) are spherical or have a circular arc surface.

2. The grinding station for the inner cavity of shell-type products as described in claim 1, characterized in that: The mounting mechanism (101) is a three-axis machine tool whose actuator can move in the X, Y and Z axes or a robotic arm whose actuator can move with multiple degrees of freedom.

3. The grinding station for the inner cavity of shell-type products as described in claim 1, characterized in that: The transmission part (4) is located outside the connecting shell (2), and the connection between the drive part and the transmission part (4) penetrates the side wall of the connecting shell (2).

4. The grinding station for the inner cavity of shell-type products as described in claim 1, characterized in that: The extension end of the drive rod (5) drives one side of the transmission part (4) to slide on the connecting shell (2), thereby driving the other side of the transmission part (4) to move synchronously, pushing the extension unit (3) connected to the second grinding part to extend or retract, thereby driving the second grinding part to extend or retract.

5. The grinding station for the inner cavity of shell-type products as described in claim 1, characterized in that: A second grinding element is fixed to the end of the inner connecting rod (31) or the outer connecting rod (32) that is not fixedly connected to the connecting shell (2); The second grinding component includes an arc-shaped mounting plate (6), on which brush bristles (62) are fixed. The mounting plate (6) is fixed to the end of the inner connecting rod (31) or the outer connecting rod (32) by a second fixing rod (61).

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