3D printing double-lever sphere inner runner support removal treatment method and device

Abstract

The invention discloses a 3D printing double-lever sphere inner runner support removal treatment method and device, and relates to the technical field of 3D printing. The method comprises the steps that a first working wire sequentially penetrates through a first gap, a mounting hole of a ball body and a second gap; the target piece, the first working wire and the ball body are placed on a bottom plate of a machining mechanism; a first working wire penetrates through the first vertical plate and is connected to the end part of the first lever; and a second working wire penetrates through a mounting hole of the ball body and a second vertical plate through hole and is connected to a second lever, at the moment, the two sides of the ball body are fixed through the first working wire and the second working wire, and the supporting structure is removed through reciprocating movement of a bilateral lever structure. The 3D printing double-lever sphere inner flow channel support removing treatment device is suitable for the 3D printing double-lever sphere inner flow channel support removing treatment method. The invention provides a method and a device for removing a flow channel support in a 3D printing double-lever sphere, and aims to solve the technical problem of removing a support in a bent flow channel of a 3D printing part.

Description

Technical Field

[0001] This invention relates to the field of 3D printing technology, and more specifically, to a method and apparatus for removing internal flow channel supports in a 3D printed double-lever sphere. Background Technology

[0002] Currently, 3D printing technology is at the forefront of the world, but many technical challenges remain to be overcome. The key advantages of 3D printing are short production cycles, low cost, and the ability to directly print complex parts, especially those with internal flow channels. Traditional manufacturing methods for these complex parts are time-consuming and costly, while 3D printing can directly produce them, primarily castings and forgings. Furthermore, the increasing demand for customized, personalized, and small-batch production makes 3D printing a viable option. Therefore, 3D printing has become a direction for automotive product development. Most complex cast parts printed in 3D have internal flow channel structures. When printing these internal flow channel structures, support structures need to be added to prevent them from collapsing. After printing, the supports in the internal flow channels need to be removed. Since most internal flow channel structures are curved rather than straight, traditional milling, drilling, or metal filing methods cannot effectively remove the supports. Removing the internal supports of curved flow channels in 3D printed parts has become a global challenge. Therefore, how to remove the internal supports of curved flow channels in 3D printed parts has become a global technical challenge. Summary of the Invention

[0003] The purpose of this invention is to provide a method and apparatus for removing internal flow channel supports in 3D printed double-lever spheres, so as to solve to some extent the technical problem of removing internal supports in the curved flow channels of 3D printed parts in the prior art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: A method for removing internal flow channel supports in a 3D-printed double-lever sphere includes the following steps: Assembly of the target part and the first working filament: The leading end of the first working filament passes through the first port of the inner flow channel of the target part through the first gap and extends out from the second port of the inner flow channel. Then, the leading end of the first working filament passes through the mounting hole of the sphere. Then, the leading end of the first working filament passes through the second gap from the second port of the inner flow channel and extends out from the first port of the inner flow channel. Then, the leading end and the trailing end of the first working filament are aligned. The first working filament includes a corresponding leading end and a trailing end. The inner flow channel includes a corresponding first port and a second port. The target part is 3D printed and has a curved inner flow channel and a support structure located in the inner flow channel. There is a first gap and a second gap between the support structure and the inner flow channel. The first gap and the second gap are located on both sides of the support structure. Assembly of the target component and the second working wire: The target component, the first working wire, and the ball are placed together on the base plate of the processing mechanism, between the first and second vertical plates; then the first and second ends of the first working wire are aligned and passed through the first vertical plate, and then connected to the end of the first lever; the second working wire passes through the mounting hole of the ball and the through hole of the second vertical plate, and is connected to the end of the second lever. At this time, both sides of the ball are fixed by the first and second working wires. The reciprocating motion of the double-sided lever structure formed by the first and second levers removes the support structure. The processing mechanism includes a base plate, a first lever and a second lever, and also includes a first upright plate, a second upright plate, a support hinged to the first lever and a support hinged to the second lever, all fixedly connected to the base plate. The first upright plate has a through hole for the first working wire to pass through, and the second upright plate has a through hole for the second working wire to pass through.

[0005] In any of the above technical solutions, optionally, the step "assembly of the target part and the first working wire" includes: The tail end of the guide wire is connected to the head end of the first working wire. The head end of the guide wire passes through the first gap from the first port of the inner flow channel of the target part and extends out from the second port of the inner flow channel. Then, the head end of the guide wire passes through the mounting hole of the ball. After that, the head end of the guide wire passes through the second gap from the second port of the inner flow channel and extends out from the first port of the inner flow channel. The head end of the first working wire passes through the first gap, the mounting hole of the ball and the second gap in sequence under the traction of the guide wire. The guide wire is removed from the head end of the first working wire, and then the head and tail ends of the first working wire are aligned. The guide wire includes a corresponding head end and tail end.

[0006] Optionally, in any of the above technical solutions, the assembly of the processing mechanism includes: The base plate is placed horizontally, and the first upright plate, the second upright plate, and the first support of the first lever are respectively fixedly installed on the upper surface of the base plate. The crossbeam of the first lever support is inserted into the through hole of the first lever so that the crossbeam of the first lever support is hinged to the first lever. One end of the crossbeam of the first lever support is inserted into the blind hole of the first support of the first lever. The first support of the second lever is fixedly installed on the upper surface of the base plate, and the crossbeam of the second lever support is inserted into the through hole of the second lever so that the crossbeam of the second lever support is hinged to the second lever. One end of the crossbeam of the second lever support is inserted into the blind hole of the first support of the second lever. After the other end of the first lever support beam is inserted into the blind hole of the second support of the first lever, the second support of the first lever is fixedly installed on the upper surface of the base plate. After the other end of the second lever support beam is inserted into the blind hole of the second lever support, the second lever support is fixedly installed on the upper surface of the base plate. The assembly of the processing mechanism is complete.

[0007] Optionally, in any of the above technical solutions, the end of the first lever away from the first working wire is hinged to one end of the lever beam, and the end of the second lever away from the second working wire is hinged to the other end of the lever beam.

[0008] In any of the above technical solutions, optionally, the step "the second working wire passes through the mounting hole of the sphere and the through hole of the second vertical plate, and is connected to the end of the second lever" includes: The second working wire passes through the through hole of the second vertical plate, then through the mounting hole of the sphere, and then the first and last ends of the second working wire are aligned and passed through the through hole of the second vertical plate in the opposite direction, and then connected to the end of the second lever for fixation.

[0009] Optionally, in any of the above technical solutions, the processing mechanism further includes a first support for the first lever, a second support for the first lever, a first support for the second lever, and a second support for the second lever, all fixedly connected to the base plate. One end of the first lever support beam is inserted into the first support of the first lever, and the other end of the first lever support beam is inserted into the second support of the first lever. One end of the second lever support beam is inserted into the first support of the second lever, and the other end of the second lever support beam is inserted into the second support of the second lever.

[0010] Assembly of the processing mechanism: Place the base plate horizontally, and fix the first vertical plate, the second vertical plate and the first support of the first lever on the upper surface of the base plate respectively. Insert the crossbeam of the first lever support into the through hole of the first lever so that the crossbeam of the first lever support is hinged to the first lever. One end of the crossbeam of the first lever support is inserted into the blind hole of the first support of the first lever. The first support of the second lever is fixedly installed on the upper surface of the base plate. One end of the crossbeam of the second lever support is inserted into the through hole of the second lever so that the crossbeam of the second lever support is hinged to the second lever. One end of the crossbeam of the second lever support is inserted into the blind hole of the first support of the second lever. After the other end of the first lever support beam is inserted into the blind hole of the second support of the first lever, the second support of the first lever is fixedly installed on the upper surface of the base plate. After the other end of the second lever support beam is inserted into the blind hole of the second lever support, the second lever support is fixedly installed on the upper surface of the base plate; the assembly of the processing mechanism is completed.

[0011] In any of the above technical solutions, optionally, the double-sided lever structure formed by the first lever and the second lever performs reciprocating motion to remove the support structure. If there is still a residual part of the support structure, the ball is replaced. The diameter of the replaced ball is larger than the diameter of the original ball. The assembly process of the target part with the first working wire and the assembly process of the target part with the second working wire are repeated until the support structure is completely removed.

[0012] Optionally, in any of the above technical solutions, the target part is made of metal 3D printing; Both the first working wire and the second working wire are made of high-strength molybdenum wire. The guide wire is made of high-toughness spring steel wire; The sphere is made of steel.

[0013] Optionally, in any of the above technical solutions, the first working wire includes multiple working wires; The second working wire comprises multiple working wires.

[0014] A device for removing internal flow channel supports in a 3D-printed double-lever sphere, applicable to the aforementioned method for removing internal flow channel supports in a 3D-printed double-lever sphere; comprising a first working filament, a second working filament, a sphere, and a processing mechanism; The first working wire and the second working wire are respectively connected to the ball; the end of the first working wire away from the ball is connected to the end of the first lever of the processing mechanism, and the end of the second working wire away from the ball is connected to the end of the second lever of the processing mechanism.

[0015] The main beneficial effects of this invention are: The present invention provides a method and apparatus for removing support structures in the internal flow channels of a 3D printed double-lever sphere. Through a double-sided lever structure formed by a first lever and a second lever, the first and second working filaments are driven to reciprocate and pull the sphere. Through the action and reaction forces between the sphere and the support structure, the support structure in the curved flow channel can be pulled out. Repeated pulling and extrusion can improve the efficiency and quality of support structure removal, thereby solving the technical problem of removing support structures in the curved flow channels of 3D printed parts.

[0016] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the method for removing internal flow channel supports in a 3D-printed double-lever sphere provided in an embodiment of the present invention; Figure 2 for Figure 1 A top view of the 3D-printed double-lever sphere internal flow channel support removal process shown; Figure 3 This is a schematic diagram of the structure of the 3D printed double-lever sphere internal flow channel support removal processing device provided in an embodiment of the present invention; Figure 4 for Figure 3 Top view of the 3D-printed double-lever sphere internal flow channel support removal and treatment device shown; Figure 5 A cross-sectional view of the target component provided in an embodiment of the present invention; Figures 6-8 This is a schematic diagram of the assembly of the target component and the first working wire provided in an embodiment of the present invention; Figure 9 This is a schematic diagram of the assembly of the processing mechanism provided in an embodiment of the present invention; Figure 10 for Figure 9 A top view of the machining mechanism shown; Figure 11 This is another assembly schematic diagram of the processing mechanism provided in an embodiment of the present invention; Figure 12 for Figure 11 A top view of the machining mechanism shown; Figure 13 This is another schematic diagram of the method for removing the internal flow channel support of a 3D-printed double-lever sphere provided in an embodiment of the present invention.

[0019] Icons: 1-Guide wire; 2-First working wire; 3-Sphere; 5-Base plate; 6-First vertical plate; 9-First support of the first lever; 12-Second support of the first lever; 15-First lever support beam; 16-First lever; 18-Lever beam; 21-Second vertical plate; 22-Second working wire; 23-First support of the second lever; 24-Second support of the second lever; 29-Second lever; 30-Second lever support beam; 200 - Target component; 201 - First gap; 202 - Second gap; 203 - Support structure. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0022] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0023] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0024] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0025] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0026] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0027] This embodiment provides a method and apparatus for removing internal flow channel supports in a 3D-printed double-lever sphere; please refer to... Figures 1-13 ,in Figures 6-8 Two spheres with different diameters are shown. Figure 1 and Figure 13 Two motion diagrams are shown for the removal of internal flow channel supports in a 3D-printed double-lever sphere.

[0028] See Figures 1-13 As shown, the method for removing the internal flow channel support of a 3D-printed double-lever sphere provided in this embodiment includes the following steps: Assembly of the target part 200 and the first working wire 2: The first end of the first working wire 2 passes through the first port of the inner flow channel of the target part 200 through the first gap 201 and extends out from the second port of the inner flow channel. Then, the first end of the first working wire 2 passes through the mounting hole of the ball 3. Then, the first end of the first working wire 2 passes through the second gap 202 from the second port of the inner flow channel and extends out from the first port of the inner flow channel. Then, the first end and the tail end of the first working wire 2 are aligned. The first working wire 2 includes a corresponding first end and a tail end. The inner flow channel includes a corresponding first port and a second port. The target part 200 is 3D printed and has a curved inner flow channel and a support structure 203 located in the inner flow channel. There is a first gap 201 and a second gap 202 between the support structure 203 and the inner flow channel. The first gap 201 and the second gap 202 are located on both sides of the support structure 203.

[0029] Assembly of target part 200 and second working wire 22: The target part 200, first working wire 2 and ball 3 are placed on the base plate 5 of the processing mechanism, and the target part 200, first working wire 2 and ball 3 are located between the first vertical plate 6 and the second vertical plate 21; then the first end and the tail end of the first working wire 2 are aligned and passed through the first vertical plate 6, and then the aligned first end and the tail end of the first working wire 2 are connected to the end of the first lever 16; the second working wire 22 passes through the mounting hole of the ball 3 and the through hole of the second vertical plate 21, and the second working wire 22 is connected to the end of the second lever 29. At this time, both sides of the ball 3 have been fixed by the first working wire 2 and the second working wire 22, and the reciprocating motion of the double-sided lever structure formed by the first lever 16 and the second lever 29 removes the support structure 203.

[0030] The processing mechanism includes a base plate 5, a first lever 16, and a second lever 29. It also includes a first upright plate 6, a second upright plate 21, a support hinged to the first lever 16, and a support hinged to the second lever 29, all fixedly connected to the base plate 5. The first upright plate 6 has a through hole for the first working wire 2 to pass through, and the second upright plate 21 has a through hole for the second working wire 22 to pass through. The first working wire 2 is connected between the ball 3 and the first lever 16, and the second working wire 22 is connected between the ball 3 and the second lever 29. The ends of the first lever 16 and the second lever 29 that are opposite to the first working wire 2 move simultaneously in the same direction, driving the first working wire 2 and the second working wire 22 to move simultaneously in the same direction. The end of the first lever 16 that is opposite to the first working wire 2 moves in the opposite direction to the first working wire 2. Optionally, to improve the stability and consistency of the movement of the end of the first lever 16 away from the first working wire 2 and the end of the second lever 29 away from the second working wire 22, a lever beam 18 is provided to hinge the first lever 16 and the second lever 29 respectively. For example, one end of the first lever 16 away from the first working wire 2 is hinged to one end of the lever beam 18, and one end of the second lever 29 away from the second working wire 22 is hinged to the other end of the lever beam 18. Optionally, the first lever 16 and the lever beam 18 are hinged by bolts, nuts, pins, etc., and the second lever 29 and the lever beam 18 are hinged by bolts, nuts, pins, etc.

[0031] In an optional embodiment, the target part 200 is formed by metal 3D printing or other methods.

[0032] In an optional embodiment, both the first working wire 2 and the second working wire 22 are made of high-strength molybdenum wire, or other materials. Optionally, the first working wire 2 includes multiple working wires; optionally, the second working wire 22 includes multiple working wires.

[0033] In an optional embodiment, the guide wire 1 is made of high-toughness spring steel wire, or other materials.

[0034] In an optional embodiment, the sphere may be made of steel or other materials.

[0035] The 3D printing double-lever sphere internal flow channel support removal method described in this embodiment uses a double-sided lever structure formed by the first lever 16 and the second lever 29 to drive the first working wire 2 and the second working wire 22 to reciprocate and pull the sphere 3. Through the action and reaction forces between the sphere 3 and the support structure 203, the support structure 203 in the curved flow channel can be pulled out. Repeated pulling and extrusion can improve the efficiency of support structure 203 removal and the quality of support structure 203 removal, thereby solving the technical problem of removing the support structure 203 in the curved flow channel of 3D printed parts.

[0036] In an optional embodiment, the step "assembly of the target part 200 and the first working wire 2" includes: The tail end of the guide wire 1 is connected to the head end of the first working wire 2. The head end of the guide wire 1 passes through the first gap 201 from the first port of the inner flow channel of the target part 200 and extends out from the second port of the inner flow channel, as shown. Figure 6 As shown; then the tip of the guide wire 1 passes through the mounting hole of the ball 3, and then the tip of the guide wire 1 passes through the second gap 202 from the second port of the inner flow channel and extends out from the first port of the inner flow channel, as shown. Figure 7 As shown; the first working wire 2, under the traction of the guide wire 1, passes sequentially through the first gap 201, the mounting hole of the ball 3, and the second gap 202. The guide wire 1 is removed from the first working wire 2, and then the first and last ends of the first working wire 2 are aligned, as shown. Figure 8 As shown; the guide wire 1 includes a corresponding head end and a tail end. The guide wire 1 facilitates better guidance of the first working wire 2.

[0037] In an optional embodiment, the assembly of the processing mechanism includes: Place the base plate 5 horizontally, and fix the first vertical plate 6, the second vertical plate 21, and the first support 9 of the first lever onto the upper surface of the base plate 5, as follows: Figure 9 and Figure 10 For example, the first upright plate 6, the second upright plate 21, and the first support 9 of the first lever are fixedly installed on the base plate 5 by screws, bolts, welding, etc.; the first lever support beam 15 is inserted into the through hole of the first lever 16 so that the first lever support beam 15 is hinged to the first lever 16, and one end of the first lever support beam 15 is inserted into the blind hole of the first support 9 of the first lever, such as... Figure 9 and Figure 10 .

[0038] The first support 23 of the second lever is fixedly installed on the upper surface of the base plate 5. The crossbeam 30 of the second lever support is inserted into the through hole of the second lever 29 so that the crossbeam 30 of the second lever support is hinged to the second lever 29. One end of the crossbeam 30 of the second lever support is inserted into the blind hole of the first support 23 of the second lever. Figure 9 and Figure 10 .

[0039] After the other end of the first lever support beam 15 is inserted into the blind hole of the second support 12 of the first lever, the second support 12 of the first lever is fixedly installed on the upper surface of the base plate 5, as follows. Figure 11 and Figure 12 .

[0040] After the other end of the second lever support beam 30 is inserted into the blind hole of the second lever support 24, the second lever support 24 is fixedly installed on the upper surface of the base plate 5, as follows. Figure 11 and Figure 12 .

[0041] The assembly of the processing mechanism is complete.

[0042] In an optional embodiment, the step "the second working wire 22 passes through the mounting hole of the ball 3 and the through hole of the second vertical plate 21, and is connected to the end of the second lever 29" includes: the second working wire 22 passes through the through hole of the second vertical plate 21, and after the second working wire 22 passes through the mounting hole of the ball 3, the first and last ends of the second working wire 22 are aligned and passed through the through hole of the second vertical plate 21 in the opposite direction, and the aligned first and last ends of the second working wire 22 are connected to the end of the second lever 29 and fixed.

[0043] In an optional embodiment, the processing mechanism further includes a first support 9 of the first lever, a second support 12 of the first lever, a first support 23 of the second lever, and a second support 24 of the second lever, all fixedly connected to the base plate 5.

[0044] One end of the first lever support beam 15 is inserted into the first support 9 of the first lever, and the other end of the first lever support beam 15 is inserted into the second support 12 of the first lever.

[0045] One end of the second lever support beam 30 is inserted into the first support 23 of the second lever, and the other end of the second lever support beam 30 is inserted into the second support 24 of the second lever.

[0046] Assembly of the processing mechanism: Place the base plate 5 horizontally, and fix the first vertical plate 6, the second vertical plate 21, and the first support 9 of the first lever onto the upper surface of the base plate 5, as follows: Figure 9 and Figure 10Insert the first lever support beam 15 into the through hole of the first lever 16 so that the first lever support beam 15 is hinged to the first lever 16. One end of the first lever support beam 15 is inserted into the blind hole of the first support 9 of the first lever. Figure 9 and Figure 10 .

[0047] The first support 23 of the second lever is fixedly installed on the upper surface of the base plate 5. One end of the second lever support beam 30 is inserted into the through hole of the second lever 29 so that the second lever support beam 30 is hinged to the second lever 29. One end of the second lever support beam 30 is inserted into the blind hole of the first support 23 of the second lever. Figure 9 and Figure 10 .

[0048] After the other end of the first lever support beam 15 is inserted into the blind hole of the second support 12 of the first lever, the second support 12 of the first lever is fixedly installed on the upper surface of the base plate 5, as follows. Figure 11 and Figure 12 .

[0049] After the other end of the second lever support beam 30 is inserted into the blind hole of the second lever support 24, the second lever support 24 is fixedly installed on the upper surface of the base plate 5, as follows. Figure 11 and Figure 12 The assembly of the processing mechanism is complete.

[0050] In an optional embodiment, the double-sided lever structure formed by the first lever 16 and the second lever 29 performs reciprocating motion to remove the support structure 203. If there is still a residual part of the support structure 203, the ball 3 is replaced. The diameter of the replaced ball 3 is larger than that of the original ball 3. The assembly process of the target part 200 with the first working wire 2 and the assembly process of the target part 200 with the second working wire 22 are repeated until the support structure 203 is completely removed.

[0051] This embodiment also provides a 3D printed double-lever sphere internal flow channel support removal processing device, which is applicable to the 3D printed double-lever sphere internal flow channel support removal processing method described in any of the above embodiments; it includes a first working filament 2, a second working filament 22, a sphere 3, and a processing mechanism; The first working wire 2 and the second working wire 22 are respectively connected to the ball 3; the end of the first working wire 2 away from the ball 3 is connected to the end of the first lever 16 of the processing mechanism, and the end of the second working wire 22 away from the ball 3 is connected to the end of the second lever 29 of the processing mechanism.

[0052] This embodiment provides a method and apparatus for removing the internal flow channel support of a 3D-printed double-lever sphere. It designs a double-lever hinge structure, employs a high-strength molybdenum wire through-through method, and combines this with a reciprocating steel ball post-removal processing method. The method involves guiding a set of high-strength molybdenum wires through the curved internal flow channel using a guided through-through method. Then, the high-strength spring steel wire is passed through the mounting hole of the support removal steel ball, while simultaneously guiding another set of high-strength molybdenum wires through the mounting hole of the steel ball. Finally, the high-strength spring steel wires are reversed and passed through the curved internal flow channel. The inner flow channel is opened, and the two ends of this set of high-strength molybdenum wires are fixed to the fixing holes of the lever tension rod device on the right side. Then, the high-toughness spring steel wire on the left side is guided through a set of high-strength molybdenum wires through the middle hole of the partition plate. The high-toughness spring steel wire is then passed through the steel ball mounting hole, and at the same time, the high-strength molybdenum wires are also guided through the mounting hole of the steel ball. Then, the high-toughness spring steel wires are reversed and passed through the middle hole of the partition plate. Then, the high-toughness spring steel wires are removed, and the two ends of this set of high-strength molybdenum wires are fixed to the fixing holes of the lever tension rod device on the left side.

[0053] This processing method is a groundbreaking technology. Currently, the removal of internal supports is done using traditional methods such as milling, drilling, or filing. These traditional methods cannot solve the technical challenge of removing internal supports from the curved flow channels inside parts. The reason for using a spherical structure is that the size of the sphere is close to the size of the internal flow channel, which can effectively remove the internal support. At the same time, the smooth surface of the sphere will not get stuck inside the internal flow channel, so a cube-like structure is not chosen. In addition, the reciprocating pultrusion can improve the operating efficiency and the surface quality of the internal flow channel.

[0054] The 3D printing double-lever sphere internal flow channel support removal method and apparatus provided in this embodiment adopts a double-lever hinge-type tension structure, and simultaneously employs a through-type method of the first working wire 2 and the second working wire 22, combined with a reciprocating support removal structure 203 of the sphere 3 for post-processing. The 3D printing double-lever sphere internal flow channel support removal method and apparatus provided in this embodiment is flexible in operation. For complex parts with internal curved flow channel structures, if 3D printing is used, this double-lever hinge-type tension structure combined with the sphere can be used to reciprocate to remove the internal curved flow channel support for post-processing, realizing a post-processing removal method for printing complex parts. This double-lever hinge-type steel ball working wire structure support removal post-processing method is simple to operate, highly efficient, and highly flexible. Existing technologies all remove supports in metal 3D printed straight internal flow channel structure parts, using traditional milling, or bench drilling or metal filing to complete the task. Therefore, existing technologies only solve the problem of removing internal supports in straight internal flow channel structure parts, but do not solve the problem of internal supports in curved internal flow channels.

[0055] Currently, there is a lack of technology for removing internal support in curved flow channels among international metal 3D printing manufacturers. Therefore, many complex parts with internal flow channel structures cannot be processed using metal 3D printing. This post-processing method, which uses a double-lever hinge tension structure in conjunction with a sphere to reciprocate and remove internal support in curved flow channels, is a pioneering method in the field of metal 3D printing support removal post-processing.

[0056] The method and apparatus for removing internal flow channel supports in 3D-printed double-lever spheres provided in this embodiment aim to solve the technical problem of post-processing for removing internal flow channel supports when 3D printing complex internal flow channel structure metal parts. Many complex parts with curved internal flow channel structures cannot be printed using metal 3D printing, which has become a technical bottleneck in metal 3D printing technology. The post-processing method described in this embodiment, which uses a double-lever hinge-type tension structure in conjunction with a sphere to reciprocately remove internal curved flow channel supports, provides a post-processing method for support removal. Complex parts with curved internal flow channel structures are printed using metal 3D printing, and the subsequent post-processing for removing curved internal flow channel supports is performed using this method, filling the current gap in curved internal flow channel support removal technology among all metal 3D printing manufacturers.

[0057] To better understand the 3D printing double-lever sphere internal flow channel support removal method of this embodiment, a single-cylinder engine cylinder head with an internal flow channel structure is selected as an example. During the 3D printing process of the single-cylinder engine cylinder head, the curved internal flow channel needs to be supported; otherwise, the curved internal flow channel will collapse. Therefore, when using the 3D printing process, a support structure needs to be designed for the curved internal flow channel, and the support structure needs to be removed subsequently. The curved internal flow channel support structure removal method is completed through a complete set of double-lever hinge sphere structure devices, assisted by a high-strength working filament reciprocating removal process.

[0058] The assembly and operation method of the 3D printing internal support structure removal device for the double-lever hinged spherical structure of the curved internal flow channel single-cylinder engine cylinder head are described below. A detailed introduction will be given using a single-cylinder engine cylinder head with a 3D-printed curved internal flow channel structure (target part 200) as an example: The 3D-printed single-cylinder engine cylinder head with a 3D-printed curved internal flow channel structure (i.e., target part 200 where the support structure 203 needs to be removed) is as follows: Figure 5 As shown: The cylinder head of the single-cylinder engine has a curved inner flow channel, and a 3D-printed metal support structure 203 is present in the curved inner flow channel. This support structure 203 has certain gaps with the upper and lower sides of the inner flow channel, namely a first gap 201 and a second gap 202, where the first gap 201 is as follows... Figures 5-8 The gap between the support structure 203 and the upper side of the inner flow channel, as shown, the second gap 202 is as follows: Figures 5-8The gap between the support structure 203 and the lower side of the inner flow channel is shown. The technical problem we need to solve is to remove the support structure 203 from the inner flow channel. The position of the support structure 203 is as follows: Figures 5-8 As shown.

[0059] First, overlap the tail end of the first working wire 2 with the tail end of the guide wire 1. For example, if the guide wire 1 is made of high-toughness spring steel wire, pass the guide wire 1 through the first gap 201 from the right side port of the curved inner flow channel (e.g. Figures 5-8 The gap between the support structure 203 and the upper side of the inner flow channel (as shown) indicates that the guide wire 1 serves a guiding function, such as... Figure 6 As shown; then the entire first working wire 2 passes through the first gap 201 from the right port of the inner flow channel, as shown. Figure 6 As shown; and guide wire 1 together with the first working wire 2 are passed through the mounting hole of the ball 3, as shown. Figure 7 As shown; then guide wire 1, together with the first working wire 2, is passed through the second gap 202 from the left port of the curved inner flow channel (as shown). Figures 5-8 (The gap between the support structure 203 and the lower side of the inner flow channel is shown). Remove the guide wire 1, and then align the beginning and end of the first working wire 2, as follows. Figure 8 As shown.

[0060] After the above operations are completed, place the single-cylinder engine cylinder head, the first working wire 2, and the ball 3 as a whole between the base plate 5 and the first vertical plate 6 for positioning. Then, align the beginning and end ends of the first working wire 2 and pass it through the through hole of the first vertical plate 6, and overlap it in the round hole at the end of the first lever 16 to fix the force point. Then, pass the second working wire 22 through the through hole of the second vertical plate 21, and then through the mounting hole of the ball 3. Next, align the beginning and end ends of the second working wire 22 and pass it through the through hole of the second vertical plate 21 in the opposite direction, and overlap it in the round hole at the end of the second lever 29 to fix the force point. Figure 1 , Figure 2 As shown, at this time, the two sides of the sphere 3 have been fixed on the left and right sides by the first working wire 2 and the second working wire 22, and then the internal support structure 203 can be removed by reciprocating motion through the double-sided lever structure.

[0061] Optionally, the assembly and operation method of the processing mechanism used in the 3D printing double-lever sphere internal flow channel support removal method of this embodiment is described as follows: First, place the base plate 5 horizontally, then place the first upright plate 6 in its mounting position on the base plate 5, and secure the first upright plate 6 to the base plate 5 using one or more screws or bolts. Figure 9 and Figure 10 .

[0062] Place the second upright plate 21 in the mounting position on the base plate 5, and fix the second upright plate 21 to the base plate 5 with one or more screws or bolts, such as... Figure 9 and Figure 10 .

[0063] Place the first support 9 of the first lever in the mounting position on the base plate 5, and fix the first support 9 of the first lever to the base plate 5 with one or more screws or bolts, such as... Figure 9 and Figure 10 .

[0064] After assembling the first lever support beam 15 and the first lever 16, the whole assembly is installed into the first support 9 of the first lever, as follows. Figure 9 and Figure 10 .

[0065] Place the first support 23 of the second lever in the mounting position on the base plate 5, and fix the first support 23 of the second lever to the base plate 5 with one or more screws or bolts, such as... Figure 9 and Figure 10 .

[0066] After assembling the second lever 29 and the second lever support beam 30, the whole assembly is installed into the first support 23 of the second lever, as follows. Figure 9 and Figure 10 .

[0067] After assembling the second support 12 of the first lever with the first lever support beam 15, position it on the mounting and fixing position on the base plate 5, and fix the second support 12 of the first lever on the base plate 5 with one or more screws or bolts. Figure 11 and Figure 12 .

[0068] After assembling the second support 24 of the second lever with the second lever support beam 30, position it on the mounting and fixing position on the base plate 5, and fix the second support 24 of the second lever to the base plate 5 with one or more screws or bolts. Figure 11 and Figure 12 .

[0069] At this point, the processing mechanism used in the 3D printing double-lever sphere internal flow channel support removal method of this embodiment has been assembled.

[0070] Optionally, the method for removing the internal flow channel support of the 3D printed double-lever sphere in this embodiment is implemented as follows: In this embodiment of the 3D printing double-lever sphere internal flow channel support removal processing method, after the processing mechanism is assembled, the single-cylinder cylinder head, the first working wire 2, and the sphere 3 are placed between the base plate 5 and the first upright plate 6 for positioning. Then, the first and last ends of the first working wire 2 are aligned and passed through the through hole of the first upright plate 6, and overlapped in the round hole at the end of the first lever 16 to fix the force point. Then, the second working wire 22 is passed through the through hole of the second upright plate 21, and then through the mounting hole of the sphere 3. The first and last ends of the second working wire 22 are aligned and passed through the through hole of the second upright plate 21 in the opposite direction, and overlapped in the round hole at the end of the second lever 29 to fix the force point. Figure 1 and Figure 2 As shown, at this time, the two sides of the sphere 3 have been fixed on the left and right sides by the first working wire 2 and the second working wire 22, and then the internal support structure 203 can be removed by reciprocating motion through the double-sided lever structure.

[0071] At this moment, by applying forces F1 and F2 to the left to pull the ends of the first lever 16 and the second lever 29, the first working wire 2, the second working wire 22, and the ball 3 are simultaneously stretched to the right by the lever principle, as shown below. Figure 1 Then, by applying force F3 and F4 to the right to pull the ends of the first lever 16 and the second lever 29, the first working wire 2, the second working wire 22, and the ball 3 are simultaneously stretched to the left by the lever principle, as shown. Figure 13 Then, repeatedly apply force left and right to remove the supporting structure 203.

[0072] At this point, the support structure 203 of the single-cylinder engine cylinder head with a curved internal flow channel structure printed in metal 3D is stretched out from the internal flow channel; if there is still a residual part of the support structure 203 in the internal flow channel, then we replace the sphere 3 with a sphere 3 of a larger diameter and repeat the above operation process, as detailed below. Figures 1 to 13 As shown, this continues until the support structure 203 is completely removed. The advantage of the sphere 3 is its spherical structure, which will not get stuck inside the inner flow channel, allowing for better removal of the support structure 203. Other non-spherical force-bearing components will get stuck inside the inner flow channel and cannot effectively remove the support structure 203. Therefore, a spherical structure is chosen to remove the internal support structure 203.

[0073] The 3D-printed double-lever sphere internal flow channel support removal processing device provided in this embodiment includes the aforementioned 3D-printed double-lever sphere internal flow channel support removal processing method. The technical features of the disclosed 3D-printed double-lever sphere internal flow channel support removal processing method are also applicable to this 3D-printed double-lever sphere internal flow channel support removal processing device, and the technical features of the disclosed 3D-printed double-lever sphere internal flow channel support removal processing method will not be repeated here. The 3D-printed double-lever sphere internal flow channel support removal processing device in this embodiment has the advantages of the aforementioned 3D-printed double-lever sphere internal flow channel support removal processing method, and the advantages of the disclosed 3D-printed double-lever sphere internal flow channel support removal processing method will not be repeated here.

[0074] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A method for removing internal flow channel supports in a 3D-printed double-lever sphere, characterized in that, Includes the following steps: Assembly of the target part (200) and the first working wire (2): The first end of the first working wire (2) passes through the first gap (201) from the first port of the inner flow channel of the target part (200) and extends out from the second port of the inner flow channel. Then, the first end of the first working wire (2) passes through the mounting hole of the ball (3). Then, the first end of the first working wire (2) passes through the second gap (202) from the second port of the inner flow channel and extends out from the first port of the inner flow channel. Then, the first end and the tail end of the first working wire (2) are connected. Alignment; wherein, the first working filament (2) includes a corresponding head end and tail end, the inner flow channel includes a corresponding first port and second port, the target part (200) is 3D printed, having a curved inner flow channel and a support structure (203) located in the inner flow channel, the support structure (203) and the inner flow channel having a first gap (201) and a second gap (202), the first gap (201) and the second gap (202) being located on both sides of the support structure (203); Assembly of the target part (200) and the second working wire (22): The target part (200), the first working wire (2) and the ball (3) are placed on the base plate (5) of the processing mechanism and located between the first upright plate (6) and the second upright plate (21); then the first end and the tail end of the first working wire (2) are aligned and passed through the first upright plate (6), and then connected to the end of the first lever (16); the second working wire (22) passes through the mounting hole of the ball (3) and the through hole of the second upright plate (21), and is connected to the end of the second lever (29). At this time, both sides of the ball (3) have been fixed by the first working wire (2) and the second working wire (22), and the reciprocating motion of the double-sided lever structure formed by the first lever (16) and the second lever (29) removes the support structure (203); The processing mechanism includes a base plate (5), a first lever (16) and a second lever (29), and also includes a first upright plate (6), a second upright plate (21), a support for hinged first lever (16) and a support for hinged second lever (29) fixedly connected to the base plate (5). The first upright plate (6) is provided with a through hole for the first working wire (2) to pass through, and the second upright plate (21) is provided with a through hole for the second working wire (22) to pass through.

2. The method for removing the internal flow channel support of a 3D-printed double-lever sphere according to claim 1, characterized in that, The step "assembly of the target part (200) and the first working wire (2)" includes: The tail end of the guide wire (1) is connected to the head end of the first working wire (2). The head end of the guide wire (1) passes through the first gap (201) from the first port of the inner flow channel of the target part (200) and extends out from the second port of the inner flow channel. Then the head end of the guide wire (1) passes through the mounting hole of the ball (3). Then the head end of the guide wire (1) passes through the second gap (202) from the second port of the inner flow channel and extends out from the first port of the inner flow channel. The head end of the first working wire (2) passes through the first gap (201), the mounting hole of the ball (3) and the second gap (202) in sequence under the traction of the guide wire (1). The guide wire (1) is removed from the head end of the first working wire (2). Then the head and tail ends of the first working wire (2) are aligned. The guide wire (1) includes a corresponding head end and tail end.

3. The method for removing the internal flow channel support of a 3D-printed double-lever sphere according to claim 1, characterized in that, The assembly of the processing mechanism includes: The base plate (5) is placed horizontally, and the first upright plate (6), the second upright plate (21) and the first support (9) of the first lever are respectively fixedly installed on the upper surface of the base plate (5). The first lever support beam (15) is inserted into the through hole of the first lever (16) so that the first lever support beam (15) is hinged to the first lever (16). One end of the first lever support beam (15) is inserted into the blind hole of the first support (9) of the first lever. The first support (23) of the second lever is fixedly installed on the upper surface of the base plate (5), and the crossbeam (30) of the second lever support is inserted into the through hole of the second lever (29) so that the crossbeam (30) of the second lever support is hinged to the second lever (29). One end of the crossbeam (30) of the second lever support is inserted into the blind hole of the first support (23) of the second lever. After the other end of the first lever support beam (15) is inserted into the blind hole of the second support (12) of the first lever, the second support (12) of the first lever is fixedly installed on the upper surface of the base plate (5); After the other end of the second lever support beam (30) is inserted into the blind hole of the second support (24) of the second lever, the second support (24) of the second lever is fixedly installed on the upper surface of the base plate (5); The assembly of the processing mechanism is complete.

4. The method for removing the internal flow channel support of a 3D-printed double-lever sphere according to claim 3, characterized in that, The first lever (16) is hinged to one end of the lever beam (18) at one end away from the first working wire (2), and the second lever (29) is hinged to the other end of the lever beam (18) at one end away from the second working wire (22).

5. The method for removing the internal flow channel support of a 3D-printed double-lever sphere according to claim 1, characterized in that, Step "the second working wire (22) passes through the mounting hole of the sphere (3) and the through hole of the second upright plate (21), and is connected to the end of the second lever (29)" includes: The second working wire (22) passes through the through hole of the second upright plate (21), then passes through the mounting hole of the ball (3), and then the first and last ends of the second working wire (22) are aligned and passed through the through hole of the second upright plate (21) in the opposite direction, and are fixed to the end of the second lever (29).

6. The method for removing the internal flow channel support of a 3D-printed double-lever sphere according to claim 1, characterized in that, The processing mechanism also includes a first support (9) of the first lever, a second support (12) of the first lever, a first support (23) of the second lever, and a second support (24) of the second lever, all fixedly connected to the base plate (5). One end of the first lever support beam (15) is inserted into the first support (9) of the first lever, and the other end of the first lever support beam (15) is inserted into the second support (12) of the first lever. One end of the second lever support beam (30) is inserted into the first support (23) of the second lever, and the other end of the second lever support beam (30) is inserted into the second support (24) of the second lever; Assembly of the processing mechanism: Place the base plate (5) horizontally, and fix the first vertical plate (6), the second vertical plate (21) and the first support (9) of the first lever on the upper surface of the base plate (5) respectively. Insert the first lever support beam (15) into the through hole of the first lever (16) so that the first lever support beam (15) is hinged to the first lever (16). One end of the first lever support beam (15) is inserted into the blind hole of the first support (9) of the first lever. The first support (23) of the second lever is fixedly installed on the upper surface of the base plate (5), and one end of the second lever support beam (30) is inserted into the through hole of the second lever (29) so that the second lever support beam (30) is hinged to the second lever (29), and one end of the second lever support beam (30) is inserted into the blind hole of the first support (23) of the second lever; After the other end of the first lever support beam (15) is inserted into the blind hole of the second support (12) of the first lever, the second support (12) of the first lever is fixedly installed on the upper surface of the base plate (5); After the other end of the second lever support beam (30) is inserted into the blind hole of the second support (24) of the second lever, the second support (24) of the second lever is fixedly installed on the upper surface of the base plate (5); the assembly of the processing mechanism is completed.

7. The method for removing the internal flow channel support of a 3D-printed double-lever sphere according to claim 1, characterized in that, The double-sided lever structure formed by the first lever (16) and the second lever (29) performs a reciprocating motion to remove the support structure (203). If there is still a residual part of the support structure (203), the ball (3) is replaced. The diameter of the replaced ball (3) is larger than the diameter of the original ball (3). The assembly process of the target part (200) and the first working wire (2) and the assembly process of the target part (200) and the second working wire (22) are repeated until the support structure (203) is completely removed.

8. The method for removing the internal flow channel support of a 3D-printed double-lever sphere according to claim 2, characterized in that, The target part (200) is manufactured using metal 3D printing; Both the first working wire (2) and the second working wire (22) are made of high-strength molybdenum wire. The guide wire (1) is made of high-toughness spring steel wire; The sphere is made of steel.

9. The method for removing the internal flow channel support of a 3D-printed double-lever sphere according to claim 1, characterized in that, The first working wire (2) comprises multiple working wires; The second working wire (22) comprises multiple working wires.

10. A device for removing and processing the internal flow channel support of a 3D-printed double-lever sphere, characterized in that, Applicable to the method for removing internal flow channel supports of 3D printed double-lever spheres as described in any one of claims 1-9; It includes a first working wire (2), a second working wire (22), a ball (3), and a processing mechanism; The first working wire (2) and the second working wire (22) are respectively connected to the ball (3); the end of the first working wire (2) away from the ball (3) is connected to the end of the first lever (16) of the processing mechanism, and the end of the second working wire (22) away from the ball (3) is connected to the end of the second lever (29) of the processing mechanism.

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