A polishing device for prototyping

Abstract

This invention discloses a polishing device for prototype making, belonging to the field of prototype polishing technology. It includes a fixed frame with a placement groove inside. Positioning structures are installed on both sides of the inner wall of the placement groove. A movable adjustment structure is installed on the fixed frame, and an electric push rod is installed on the movable adjustment structure. A double-ended connecting seat is fixedly connected to the output end of the electric push rod. After determining the position of the hole on the outside of the prototype, the electric push rod and the double-ended connecting seat are moved above the designated hole, and the electric push rod is activated to lower a rubber polishing rod. The rubber polishing rod is inserted into the hole for physical polishing. During the physical polishing process, a micro-infusion pump injects polishing liquid into the hole. The polishing liquid injected into the hole is evenly coated on the inner wall surface of the hole by the up-and-down movement of the rubber polishing rod, improving the targeted injection effect of the polishing liquid and the polishing effect.

Description

Technical Field

[0001] This invention relates to the field of prototype polishing technology, and more specifically, to a polishing apparatus for prototype making. Background Technology

[0002] Prototype making is a crucial step in product design and development, with the core objective of validating the feasibility and functionality of the design through a physical model. Polishing, as a core surface treatment step, directly impacts the prototype's appearance, dimensional accuracy, and suitability for subsequent processing. Traditional polishing methods rely heavily on manual labor, using tools like sandpaper and grinding rods for mechanical grinding. However, this approach suffers from high labor intensity, difficulty in handling complex structures, and poor surface consistency. For instance, manual polishing struggles to achieve uniform processing of curved surfaces or micropores, and its efficiency is limited by worker skill levels, leading to longer production cycles and increased costs. As the manufacturing industry shifts towards higher precision and intelligent processes, traditional polishing techniques are no longer sufficient to meet industry demands. While mechanical polishing improves processing efficiency through auxiliary equipment such as turntables and grinding tools, it still has limitations when dealing with complex geometries, especially when polishing holes in prototypes. Mechanical polishing can result in inconsistent hole sizes, requiring frequent tool changes. One method of polishing with polishing fluid is the immersion method, where the prototype is completely submerged in the polishing fluid. Another method is the dripping method, where the worker drips the polishing fluid into the holes individually using a tool. However, the immersion method requires placing the entire prototype in the polishing fluid, which is not suitable for polishing only the holes. The dripping method, on the other hand, suffers from insufficient polishing due to the polishing fluid not staying or flowing in time inside the holes. Therefore, a polishing device for prototype manufacturing is proposed. Summary of the Invention

[0003] The purpose of this invention is to provide a polishing apparatus for prototyping, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a polishing device for prototype making, comprising a fixed frame, wherein a placement groove is provided inside the fixed frame, and positioning structures are installed on both sides of the inner wall of the placement groove; a movable adjustment structure is installed on the fixed frame, and an electric push rod is installed on the movable adjustment structure; a double-ended connecting seat is fixedly connected to the output end of the electric push rod; an external soft oil supply nozzle is installed at the bottom of the double-ended connecting seat; a rubber polishing rod is snapped into the internal part of the external soft oil supply nozzle; and an opening is provided on the outside of the rubber polishing rod. The device has multiple inclined nozzles, each with a first piezoelectric element installed at its inlet. An elastic conductive column is installed inside the rubber polishing rod. An internal electromagnet is installed on the inner wall of the port of the externally connected flexible oil delivery nozzle. A conductive sheet is attached to the inner wall of the rubber polishing rod, and this conductive sheet is electrically connected to the elastic conductive column via a wire. A miniature infusion pump is fixedly connected to the outer wall of the mounting frame. The outlet of the miniature infusion pump is connected to a first delivery hose, and the end of the first delivery hose furthest from the miniature infusion pump is connected to the externally connected flexible oil delivery nozzle.

[0005] Preferably, the rubber polishing rod has an integrally formed inner expansion bladder, the fixed frame is fixedly connected to a micro air pump, the air outlet of the micro air pump is connected to a second delivery hose, the end of the second delivery hose away from the micro air pump passes through the outer wall of the double-ended connector and is connected to the inner air delivery nozzle, and the top opening end of the inner expansion bladder is inserted into the outer wall of the inner air delivery nozzle.

[0006] Preferably, the bottom of the inner expansion bladder is integrally formed with an outer expansion polishing column, and a connecting hole is provided between the inner expansion bladder and the outer expansion polishing column. A second piezoelectric piece is installed at the air inlet end of the connecting hole, and the second piezoelectric piece is electrically connected to the elastic conductive column through a wire.

[0007] Preferably, a central elastic column is integrally formed at the lower end of the elastic conductive column, and multiple upper electromagnet plates are fixedly connected to the outside of the elastic conductive column. The upper electromagnet plates are located above the central elastic column, and multiple lower electromagnet plates are fixedly connected to the outside of the elastic conductive column. The outer wall of the lower electromagnet plates penetrates the outer wall of the inner expansion bladder and is fixedly connected to the inner wall surface of the rubber polishing rod. The lower electromagnet plates are located below the upper electromagnet plates.

[0008] Preferably, the movable adjustment structure includes two sets of upper fixed seats, with two upper fixed seats in each set. Both sets of upper fixed seats are fixedly connected to the upper frame. One set of upper fixed seats is rotatably connected to a first lead screw, and the other set of upper fixed seats is fixedly connected to a guide rod. A first drive motor is mounted on the outside of one set of upper fixed seats. The output shaft of the first drive motor is fixedly connected to one end of the first lead screw. A first movable seat is mounted on the outside of both the first lead screw and the guide rod. The first movable seat located outside the first lead screw is threadedly connected to the first lead screw, and the first movable seat located outside the guide rod is slidably connected to the guide rod. A second drive motor is mounted on the outside of the first movable seat on the first lead screw. The output shaft of the second drive motor is mounted to a second lead screw via a coupling. The end of the second lead screw away from the second drive motor is rotatably connected to the outer wall of the first movable seat on the guide rod. The second movable seat is threadedly connected to the outside of the second lead screw. The electric push rod is mounted on the outside of the second movable seat.

[0009] Preferably, the first lead screw is externally threaded to an upper connecting seat, one end of the optical rod passes through the upper connecting seat on the side away from the first lead screw, and a D scanner is installed below the upper connecting seat.

[0010] Preferably, the positioning structure includes two fixed cylinders, both of which are rotatably connected to the inner wall of the placement groove. The output ends of the two fixed cylinders are each equipped with a positioning seat. Multiple movable grooves are opened on the adjacent side of the two positioning seats. A spring is fixedly connected inside the movable groove, and a positioning column is fixedly connected on the side of the spring away from the movable groove.

[0011] Preferably, a rotary motor is installed on one side of the fixing frame, and the output shaft of the rotary motor passes through the outer wall of the fixing frame and is fixedly connected to one end of one of the fixing cylinders.

[0012] Preferably, the top of both the rubber polishing rod and the inner expansion bladder are integrally formed with a semi-rigid sleeve.

[0013] Preferably, an electromagnet ring is installed on the outer wall of the internal gas delivery nozzle.

[0014] Compared with the prior art, the beneficial effects of the present invention are: In this invention, the handplate is pre-scanned by a D scanner to determine the position of the holes on the outside of the handplate. After determining the position of the holes on the outside of the handplate, the electric push rod and the double-ended connecting seat are moved above the designated holes, and the electric push rod is activated to move the rubber polishing rod down. The rubber polishing rod is inserted into the hole for physical polishing. During the physical polishing process, polishing liquid is injected into the hole through a micro infusion pump. The polishing liquid injected into the hole is evenly coated on the inner wall of the hole by the up-and-down moving rubber polishing rod, which improves the point injection effect of the polishing liquid and the polishing effect. Attached Figure Description

[0015] Figure 1 This is one of the three-dimensional structural schematic diagrams of an embodiment of the present invention; Figure 2 This is a second three-dimensional structural schematic diagram in an embodiment of the present invention; Figure 3 This is a schematic diagram of the separated state structure of the rubber polishing rod and the internal air delivery nozzle in an embodiment of the present invention; Figure 4 This is a schematic cross-sectional view of the externally connected flexible oil delivery nozzle in an embodiment of the present invention; Figure 5 This is a schematic cross-sectional view of the rubber polishing rod in an embodiment of the present invention; Figure 6 This is a schematic diagram of the bent state structure of the rubber polishing rod in an embodiment of the present invention; Figure 7 This is a schematic diagram of the structure of the fixed cylinder and the positioning seat in an embodiment of the present invention; Figure 8 This is a cross-sectional structural diagram of the positioning seat in an embodiment of the present invention.

[0016] In the diagram: 100, Fixing frame; 101, Placement slot; 102, Electric push rod; 103, Double-ended connector; 104, External soft oil delivery nozzle; 105, Internal air delivery nozzle; 106, Rubber polishing rod; 107, Miniature infusion pump; 108, Miniature air pump; 109, First delivery hose; 110, Second delivery hose; 111, Inclined nozzle; 112, First piezoelectric element; 113, Elastic conductive column; 114, Internal electromagnet; 115, Adhesive conductive sheet; 200, Inner expansion bladder; 300, Outer expansion polishing column; 301, ... Two piezoelectric elements; 400, central elastic column; 401, upper electromagnet; 402, lower electromagnet; 500, upper fixed seat; 501, first drive motor; 502, first lead screw; 503, first moving seat; 504, second drive motor; 505, second lead screw; 506, second moving seat; 600, upper connecting seat; 601, 3D scanner; 700, fixed cylinder; 701, positioning seat; 702, moving groove; 703, spring; 704, positioning column; 800, rotary motor; 900, semi-rigid sleeve; 901, electromagnet ring. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Example 1, such as Figure 1As shown, this application discloses a polishing device for prototype making, including a fixed frame 100. The fixed frame 100 has an internal placement groove 101. Positioning structures are installed on both sides of the inner wall of the placement groove 101. A movable adjustment structure is installed on the fixed frame 100, and an electric push rod 102 is installed on the movable adjustment structure. A double-ended connecting seat 103 is fixedly connected to the output end of the electric push rod 102. An external soft oil spray nozzle 104 is installed at the bottom of the double-ended connecting seat 103. A rubber polishing rod 106 is internally engaged with the external soft oil spray nozzle 104. The rubber polishing rod 106 has multiple inclined spray holes 111 on its exterior. A first piezoelectric element 112 is installed at the inlet end of the nozzle 111. An elastic conductive post 113 is installed inside the rubber polishing rod 106. An inner electromagnet 114 is installed on the inner wall of the port of the externally connected soft oil delivery nozzle 104. A bonding conductive sheet 115 is attached to the inner wall of the rubber polishing rod 106. The bonding conductive sheet 115 is electrically connected to the elastic conductive post 113 through a wire. A micro infusion pump 107 is fixedly connected to the outer wall of the fixing frame 100. The outlet of the micro infusion pump 107 is connected to a first delivery hose 109. The end of the first delivery hose 109 away from the micro infusion pump 107 is connected to the externally connected soft oil delivery nozzle 104.

[0019] Specifically, during use, the operator can place the completed prototype between two positioning structures and fix it by opening the positioning structures. After fixing the prototype, the operator can activate the moving adjustment structure to move the electric push rod 102 to the hole position of the prototype. After moving the electric push rod 102 above the hole in the prototype, the operator can attach the rubber polishing rod 106 to the inside of the external soft oil nozzle 104. After attachment, the operator can activate the electric push rod 102 to move the double-end connecting seat 103 and the rubber polishing rod 106 downward. With the double-end connecting seat 103 and the rubber polishing rod 106 moving downward, the rubber polishing rod 106 can be inserted into the hole in the prototype. As the electric push rod 102 moves the double-end connecting seat 103 and the rubber polishing rod 106 up and down, the inside of the hole in the prototype can be physically polished.

[0020] Furthermore, the thickness of the rubber polishing rod 106 is at least 3 mm.

[0021] Furthermore, when the rubber polishing rod 106 is inserted into the hole, the operator can activate the micro infusion pump 107. With the micro infusion pump 107 activated, the external polishing liquid can be slowly and continuously delivered to the first delivery hose 109. When the polishing liquid enters the externally connected flexible oil nozzle 104 through the first delivery hose 109, it can be delivered again to the rubber polishing rod 106. While the polishing liquid is entering the rubber polishing rod 106, the operator can energize the attached conductive sheet 115. After energizing the attached conductive sheet 115, the current, in conjunction with the elastic conductive post 113, enters multiple first pressure... In the piezoelectric element 112, multiple first piezoelectric elements 112 bend when receiving current, thereby exposing the outlet of the inclined nozzle 111. When the outlet of the inclined nozzle 111 is exposed, the polishing liquid that has entered the rubber polishing rod 106 will be transported through the inclined nozzle 111 to the hole outside the rubber polishing rod 106. After the polishing liquid is transported through the inclined nozzle 111 into the hole outside the rubber polishing rod 106, it moves up and down inside the hole again through the rubber polishing rod 106, thereby working with the rubber polishing rod 106 to evenly apply the polishing liquid to the hole inside the hand plate, forming a composite polishing effect, and accelerating the efficiency and yield of hole polishing.

[0022] like Figures 1-2 As shown, the movable adjustment structure includes two sets of upper fixed seats 500, with two upper fixed seats 500 in each set. Both sets of upper fixed seats 500 are fixedly connected to the upper part of the fixed frame 100. A first lead screw 502 is rotatably connected to the outside of one set of upper fixed seats 500, and a guide rod is fixedly connected to the outside of the other set of upper fixed seats 500. A first drive motor 501 is mounted on the outside of one set of upper fixed seats 500, and the output shaft of the first drive motor 501 is fixedly connected to one end of the first lead screw 502. A first movable seat 503 is mounted on the outside of both the first lead screw 502 and the guide rod, located outside the first lead screw 502. The first movable seat 503 of the part is threadedly connected to the first lead screw 502. The first movable seat 503 located outside the guide rod is slidably connected to the guide rod. A second drive motor 504 is installed on the outside of the first movable seat 503 located on the first lead screw 502. The output shaft of the second drive motor 504 is connected to the second lead screw 505 through a coupling. The end of the second lead screw 505 away from the second drive motor 504 is rotatably connected to the outer wall of the first movable seat 503 located on the guide rod. The second movable seat 506 is threadedly connected to the outside of the second lead screw 505. The electric push rod 102 is installed on the outside of the second movable seat 506.

[0023] Specifically, during use, the operator can start the first drive motor 501. When the first drive motor 501 is started, it drives the first lead screw 502 to rotate. The rotation of the first lead screw 502 causes the first movable seat 503 to move continuously on the lead screw 502. While the first lead screw 502 is rotating, the other set of upper fixed seats 500 and the first movable seat 503 outside the guide rod can cooperate to drive the second drive motor 504 to move back and forth on the first lead screw 502, preventing the first movable seat 503 from moving forward or backward. 03. The first lead screw 502 rotates, and the first moving seat 503 drives the second drive motor 504 to move laterally. The second drive motor 504 drives the second lead screw 505 to rotate. The rotation of the second lead screw 505 drives the second moving seat 506 to move. The movement of the second moving seat 506 drives the electric push rod 102 to move. When the first lead screw 502 drives the first moving seat 503 and the second drive motor 504 to move laterally, the second drive motor 504 drives the electric push rod 102 to move left and right to match the position of the hole on the hand plate.

[0024] like Figure 1 and Figure 2 As shown, the external thread of the first lead screw 502 is connected to the upper connecting seat 600. One end of the optical rod passes through the upper connecting seat 600 on the side away from the first lead screw 502. A 3D scanner 601 is installed below the upper connecting seat 600.

[0025] Specifically, before the electric push rod 102 moves above the hole in the hand plate, the first lead screw 502 drives the upper connecting seat 600 and the 3D scanner 601 to scan the outer surface of the hand plate in advance. When the 3D scanner 601 scans the outer surface of the hand plate, it can perform a 3D scan of the external shape of the hand plate and determine the position and coordinates of the hole in the hand plate through the 3D scan. After the position and coordinates of the hole in the hand plate are scanned, the coordinates and position of the hole are uploaded to the main controller. The main controller controls the rotation of the first drive motor 501 and the second drive motor 504, thereby driving the electric push rod 102 to move above the hole in the hand plate. By starting the electric push rod 102, the rubber polishing rod 106 is driven to polish the hole in the hand plate.

[0026] like Figures 1-7 As shown, the positioning structure includes two fixed cylinders 700, both of which are rotatably connected to the inner wall of the placement groove 101. The output ends of the two fixed cylinders 700 are each equipped with a positioning seat 701. Multiple moving grooves 702 are opened on the adjacent side of the two positioning seats 701. A spring 703 is fixedly connected inside the moving groove 702. A positioning post 704 is fixedly connected to the side of the spring 703 away from the moving groove 702.

[0027] Specifically, during use, when polishing the holes of the prototype is required, the operator places the prototype between the two positioning seats 701 and activates the fixing cylinder 700. When activated, the two fixing cylinders 700 drive the two positioning seats 701 to continuously move closer to each other. As the two positioning seats 701 move closer to each other, they clamp and limit the prototype at the middle position. When the two positioning seats 701 clamp the prototype, the prototype contacts the positioning post 704 outside the positioning seat 701 and squeezes the positioning post 704. The squeezed positioning post 704 moves into the moving groove 702, while the other positioning posts 704 located outside the prototype limit the outer perimeter of the prototype, ensuring the stability of the prototype between the two positioning seats 701.

[0028] like Figures 1-7 As shown, a rotary motor 800 is installed on one side of the fixed frame 100. The output shaft of the rotary motor 800 passes through the outer wall of the fixed frame 100 and is fixedly connected to one end of one of the fixed cylinders 700.

[0029] Specifically, during use, the operator can start the rotary motor 800. When the rotary motor 800 is started, it will drive one of the fixed cylinders 700 to rotate. When the fixed cylinder 700 rotates, it can drive the hand plate to rotate as a whole in conjunction with another positioning seat 701 during the clamping process. The hand plate can be flipped while rotating as a whole. After flipping, the 3D scanner 601 that moves back and forth is used to scan the flipped hand plate. After scanning, the electric push rod 102 and the rubber polishing rod 106 are used to polish the holes on the other side of the hand plate.

[0030] The technical solutions in the above-described embodiments of this application have at least the following technical effects or advantages: Compared with the prior art, in this embodiment, the 3D scanner 601 pre-scans the handplate during the clamping process to determine the position of the hole on the outside of the handplate. After determining the position of the hole on the outside of the handplate, the electric push rod 102 and the double-ended connecting seat 103 are moved above the designated hole, and the electric push rod 102 is activated to move the rubber polishing rod 106 down. The rubber polishing rod 106 is inserted into the inside of the hole for physical polishing. During the physical polishing process, the polishing liquid is injected into the hole through the micro infusion pump 107. The polishing liquid injected into the hole can be evenly coated on the inner wall of the hole by the up-and-down moving rubber polishing rod 106, which improves the point injection effect of the polishing liquid and the polishing effect.

[0031] Example 2: Considering that the hole size on each handpiece is not consistent during use, and that different handpieces will have holes of different diameters, and that a single rubber polishing rod 106 can only assist in polishing holes of a single diameter, it may be unable to evenly deliver the polishing liquid to the inner wall of the hole when dealing with larger diameter holes, this application proposes the following technical solution to address the above technical problems: like Figures 1-5 As shown, the rubber polishing rod 106 has an inner expansion bladder 200 integrally formed inside. A micro air pump 108 is fixedly connected to the outside of the fixing frame 100. The air outlet of the micro air pump 108 is connected to a second delivery hose 110. The end of the second delivery hose 110 away from the micro air pump 108 passes through the outer wall of the double-end connector 103 and is connected to the inner air delivery nozzle 105. The top opening end of the inner expansion bladder 200 is inserted into the outer wall of the inner air delivery nozzle 105. An electromagnet ring 901 is installed on the outer wall of the inner air delivery nozzle 105.

[0032] Specifically, during use, before attaching the rubber polishing rod 106 to the inside of the external soft oil nozzle 104, the operator can hold the inner expansion bladder 200 and attach it to the outside of the inner air nozzle 105. After attaching the inner expansion bladder 200 to the outside of the inner air nozzle 105, the operator can activate the inner electromagnet 114. When the inner electromagnet 114 is activated, it can attract the electromagnet ring 901 on the outside of the inner air nozzle 105. When the electromagnet ring 901 is attracted, the outer edge of the external soft oil nozzle 104 will deform and adhere to the outer wall of the rubber polishing rod 106, achieving a magnetic snap-fit ​​effect. This ensures that the rubber polishing rod 106 will not detach from the outer walls of the external soft oil nozzle 104 and the inner air nozzle 105. After the connection is completed, when inserting the rubber polishing rod 106 into the inner wall of the hole in the hand plate, if the hole diameter is large, the operator can activate the micro air pump 108 to continuously pump air into the hole. Gas is injected into the inner expansion bladder 200. As gas is continuously injected into the inner expansion bladder 200, the inner expansion bladder 200 expands. When the inner expansion bladder 200 expands, it compresses the rubber polishing rod 106. When the rubber polishing rod 106 is compressed and there is a portion of polishing liquid inside the rubber polishing rod 106, the first piezoelectric sheet 112 is energized, causing the first piezoelectric sheet 112 to bend. When the first piezoelectric sheet 112 bends, the polishing liquid inside the rubber polishing rod 106 and being compressed will be ejected along with the inclined nozzle 111 onto the inner wall of the hole in the prototype. As the inner expansion bladder 200 expands, it can drive the rubber polishing rod 106 to contact the inner wall of a larger hole, achieving a certain degree of hole diameter adaptation. When dealing with small prototypes, it can adapt to holes of different diameters in more prototypes, avoiding the phenomenon that polishing cannot be performed when dealing with larger holes or that frequent changes of polishing tools are required.

[0033] like Figure 5 As shown, the top of both the rubber polishing rod 106 and the inner expansion bladder 200 are integrally formed with a semi-rigid sleeve 900.

[0034] Specifically, the semi-rigid sleeve 900 allows the operator to hold the semi-rigid sleeve 900 and fit the inner expansion bladder 200 onto the outside of the inner air delivery nozzle 105, and to snap the rubber polishing rod 106 into the inside of the outer soft oil delivery nozzle 104.

[0035] The technical solutions in the above-described embodiments of this application have at least the following technical effects or advantages: Compared with Embodiment 1, in this embodiment, by setting the inner inner expansion bladder 200, when facing a large-diameter handpiece hole, gas can be continuously supplied into the inner expansion bladder 200. Under the condition of continuously supplying gas into the inner expansion bladder 200, the inner expansion bladder 200 will expand. The expansion of the inner expansion bladder 200 will drive the rubber polishing rod 106 to expand. The expansion of the rubber polishing rod 106 will gradually adhere to the inner wall of the large-diameter hole. At this time, by turning on the first piezoelectric sheet 112, polishing liquid can be supplied to the inner wall of the hole, and the large-diameter hole can be polished in conjunction with the rubber polishing rod 106 that has already adhered to the inner wall of the hole.

[0036] Example 3: Considering that during use, not only large holes but also small holes, stepped holes, or inclined holes may be encountered, and that the rubber polishing rod 106 cannot be inserted into small holes or stepped holes to ensure even application of polishing liquid, this application proposes the following technical solution to address the above-mentioned technical problems: like Figures 5-6 As shown, the bottom of the inner expansion bladder 200 is integrally formed with an outer expansion polishing column 300. A connecting hole is provided between the inner expansion bladder 200 and the outer expansion polishing column 300. A second piezoelectric piece 301 is installed at the air inlet end of the connecting hole. The second piezoelectric piece 301 is electrically connected to the elastic conductive column 113 through a wire.

[0037] Specifically, during use, when facing small holes or stepped holes, the operator can energize the second piezoelectric element 301, causing it to deform. This deformation exposes a connecting hole, which connects the outer expansion polishing column 300 to the inner expansion bladder 200. As gas is continuously supplied to the inner expansion bladder 200, it flows into the outer expansion polishing column 300. This expansion causes the outer expansion polishing column 300 to expand, creating a polishing column with a smaller diameter than the rubber polishing rod 106. This allows for the even application of polishing liquid to the inner wall of the hole, even with smaller apertures.

[0038] like Figures 5-6As shown, a central elastic column 400 is integrally formed at the lower end of the elastic conductive column 113. Multiple upper electromagnet plates 401 are fixedly connected to the outside of the elastic conductive column 113. The upper electromagnet plates 401 are located above the central elastic column 400. Multiple lower electromagnet plates 402 are fixedly connected to the outside of the elastic conductive column 113. The outer wall of the lower electromagnet plates 402 penetrates the outer wall of the inner expansion bladder 200 and is fixedly connected to the inner wall surface of the rubber polishing rod 106. The lower electromagnet plates 402 are located below the upper electromagnet plates 401.

[0039] Specifically, when facing an inclined hole, the operator can activate the upper electromagnet 401 and the lower electromagnet 402 located at opposite positions outside the elastic conductive post 113. When the upper electromagnet 401 and the lower electromagnet 402 are activated, they will attract each other magnetically. Under the influence of this magnetic attraction, the lower electromagnet 402 will bend towards the upper electromagnet 401 through the central elastic post 400. Thus, when facing an inclined hole, the operator can adjust the degree of attraction between the upper electromagnet 401 and the lower electromagnet 402 at different positions to penetrate the inclined hole.

[0040] The technical solutions in the above-described embodiments of this application have at least the following technical effects or advantages: Compared with Embodiment 2, in this embodiment, when facing holes with smaller apertures, the gas can be diverted to the interior of the outer expansion polishing column 300. When the gas enters the interior of the outer expansion polishing column 300 in a concentrated manner, the outer expansion polishing column 300 will expand. When the outer expansion polishing column 300 expands, it can form a smaller polishing column. When a smaller polishing column is formed, it can penetrate into holes with smaller apertures, assisting the polishing liquid to enter the interior of holes with smaller apertures. Furthermore, the mutual attraction between the multi-directional electromagnet plate 401 and the lower electromagnet plate 402, combined with the central elastic column 400, can tilt and adjust the front end of the rubber polishing rod 106, thereby allowing the rubber polishing rod 106 or the outer expansion polishing column 300 to enter the tilted hole, or to expand in the tilted direction after entering the hole, filling pipes of different shapes such as bends, and adapting to polishing processes with more apertures.

[0041] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A polishing apparatus for prototyping, comprising a fixing frame (100), characterized in that: The fixed frame (100) has a placement slot (101) inside. Positioning structures are installed on both sides of the inner wall of the placement slot (101). A movable adjustment structure is installed on the fixed frame (100), and an electric push rod (102) is installed on the movable adjustment structure. A double-end connector (103) is fixedly connected to the output end of the electric push rod (102). An external soft oil delivery nozzle (104) is installed at the bottom of the double-end connector (103). A rubber polishing rod (106) is snapped into the internal part of the external soft oil delivery nozzle (104). A plurality of inclined spray holes (111) are opened on the outside of the rubber polishing rod (106). A first piezoelectric nozzle is installed at the inlet end of the inclined spray hole (111). The rubber polishing rod (106) has an elastic conductive column (113) installed inside. The inner wall of the port of the externally connected soft oil nozzle (104) is equipped with an inner electromagnet plate (114). The inner wall of the rubber polishing rod (106) is fitted with a bonding conductive plate (115). The bonding conductive plate (115) is electrically connected to the elastic conductive column (113) through a wire. The outer wall of the fixing frame (100) is fixedly connected with a micro infusion pump (107). The outlet of the micro infusion pump (107) is connected to a first delivery hose (109). The end of the first delivery hose (109) away from the micro infusion pump (107) is connected to the externally connected soft oil nozzle (104). The rubber polishing rod (106) has an inner expansion bladder (200) integrally formed inside. The fixing frame (100) is fixedly connected to a micro air pump (108). The air outlet of the micro air pump (108) is connected to a second delivery hose (110). The end of the second delivery hose (110) away from the micro air pump (108) passes through the outer wall of the double-ended connector (103) and is connected to the inner air delivery nozzle (105). The top opening end of the inner expansion bladder (200) is inserted into the outer wall of the inner air delivery nozzle (105). The bottom of the inner expansion bladder (200) is integrally formed with an outer expansion polishing column (300). A connecting hole is provided between the inner expansion bladder (200) and the outer expansion polishing column (300). A second piezoelectric piece (301) is installed at the air inlet end of the connecting hole. The second piezoelectric piece (301) is electrically connected to the elastic conductive column (113) through a wire. A central elastic column (400) is integrally formed at the lower end of the elastic conductive column (113). Multiple upper electromagnet plates (401) are fixedly connected to the outside of the elastic conductive column (113). The upper electromagnet plates (401) are located above the central elastic column (400). Multiple lower electromagnet plates (402) are fixedly connected to the outside of the elastic conductive column (113). The outer wall of the lower electromagnet plates (402) penetrates the outer wall of the inner expansion bladder (200) and is fixedly connected to the inner wall of the rubber polishing rod (106). The lower electromagnet plates (402) are located below the upper electromagnet plates (401).

2. The polishing device for prototyping according to claim 1, characterized in that: The movable adjustment structure includes two sets of upper fixed seats (500), each set having two upper fixed seats (500). Both sets of upper fixed seats (500) are fixedly connected to the upper frame (100). One set of upper fixed seats (500) is rotatably connected to a first lead screw (502), and the other set of upper fixed seats (500) is fixedly connected to a guide rod. One set of upper fixed seats (500) is equipped with a first drive motor (501). The output shaft of the first drive motor (501) is fixedly connected to one end of the first lead screw (502). Both the first lead screw (502) and the guide rod are equipped with first movable seats (503). The first movable seat (503) is located outside the first lead screw (502). A movable seat (503) is threadedly connected to a first lead screw (502). The first movable seat (503) located outside the guide rod is slidably connected to the guide rod. A second drive motor (504) is installed outside the first movable seat (503) located on the first lead screw (502). The output shaft of the second drive motor (504) is connected to a second lead screw (505) via a coupling. The end of the second lead screw (505) away from the second drive motor (504) is rotatably connected to the outer wall of the first movable seat (503) located on the guide rod. The second movable seat (506) is threadedly connected to the outside of the second lead screw (505). The electric push rod (102) is installed outside the second movable seat (506).

3. A polishing device for prototyping according to claim 2, characterized in that: The first lead screw (502) is externally threaded to an upper connecting seat (600). One end of the optical rod passes through the upper connecting seat (600) on the side away from the first lead screw (502). A 3D scanner (601) is installed below the upper connecting seat (600).

4. A polishing device for prototyping according to claim 1, characterized in that: The positioning structure includes two fixed cylinders (700), both of which are rotatably connected to the inner wall of the placement groove (101). The output ends of the two fixed cylinders (700) are each equipped with a positioning seat (701). Multiple moving grooves (702) are opened on the adjacent side of the two positioning seats (701). A spring (703) is fixedly connected inside the moving groove (702). A positioning column (704) is fixedly connected to the side of the spring (703) away from the moving groove (702).

5. A polishing device for prototyping according to claim 4, characterized in that: A rotary motor (800) is mounted on one side of the mounting bracket (100). The output shaft of the rotary motor (800) passes through the outer wall of the mounting bracket (100) and is fixedly connected to one end of one of the fixed cylinders (700).

6. A polishing device for prototyping according to claim 5, characterized in that: The top of both the rubber polishing rod (106) and the inner expansion bladder (200) are integrally formed with a semi-rigid sleeve (900).

7. A polishing device for prototyping according to claim 1, characterized in that: An electromagnet ring (901) is installed on the outer wall of the internal gas delivery nozzle (105).

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