Thin-walled part machining device and method

Abstract

The embodiment of the present invention discloses a device and method for processing thin-walled parts. The device includes: a base plate, a positioning part, an extrusion part, a left support part, and a right support part, wherein the base plate is arranged on a machine tool platform to support the thin-walled part, the positioning part, the extrusion part, the left support part, and the right support part; the positioning part, the extrusion part, the left support part, and the right support part are all arranged on the side of the base plate away from the machine tool platform; after applying a pressing force to the thin-walled part, the thin-walled part is fixed between the positioning part and the extrusion part, and the left support part and the right support part support the weak parts of the thin-walled part. The embodiment of the present invention can assist in strengthening the structural rigidity of the part, avoid processing vibration, effectively reduce the difficulty of processing thin-walled parts, and improve processing quality and efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of thin-walled part processing, in particular to a thin-walled part processing device and method. BACKGROUND

[0002] Thin-walled parts are products widely used in the fields of aerospace, etc., and have high requirements for lightweight. However, due to the complex structure and poor rigidity of many products, the scheme of combining additive printing and mechanical processing is currently adopted, that is, the main body of the thin-walled part is processed through additive printing, and the precise fitting part of the thin-walled part is processed through mechanical processing. The complex and weak rigid structure makes it difficult to clamp the thin-walled part, and the machining vibration is easily generated during mechanical processing, resulting in the out-of-tolerance of the shape, position and size of the product. Therefore, it is worth studying for the technical personnel in this field to research a reasonable processing method, reduce the clamping difficulty of the thin-walled part, control the machining vibration, and ensure that the qualified product is processed. SUMMARY

[0003] The technical problem solved by the present application is to overcome the shortcomings of the prior art and provide a thin-walled part processing device and method.

[0004] The technical solution of the present application is as follows:

[0005] In a first aspect, the present application provides a thin-walled part processing device, which comprises a base plate, a positioning part, an extrusion part, a left supporting part and a right supporting part, wherein,

[0006] The base plate is arranged on a machine tool platform to support the thin-walled part, the positioning part, the extrusion part, the left supporting part and the right supporting part;

[0007] The positioning part, the extrusion part, the left supporting part and the right supporting part are arranged on the side of the base plate away from the machine tool platform;

[0008] After the pressing force is applied to the thin-walled part, the thin-walled part is fixed between the positioning part and the extrusion part, and the left supporting part and the right supporting part support the weak part of the thin-walled part.

[0009] Optionally, a first positioning pin hole, a second positioning pin hole, a first fixing threaded hole, a second fixing threaded hole, a third fixing threaded hole, a first supporting threaded hole, a second supporting threaded hole, a third supporting threaded hole and an extrusion wall structure are arranged on the base plate,

[0010] The base plate is fixedly connected with the positioning part through the first positioning pin hole, the second positioning pin hole, the first fixing threaded hole, the second fixing threaded hole and the third fixing threaded hole;

[0011] The bottom plate is fixed with the left support part and the right support part through the first support threaded hole and the second support threaded hole, respectively.

[0012] The bottom plate is connected with the extrusion part through the extrusion wall structure.

[0013] Optionally, the positioning part comprises: a first positioning pin, a second positioning pin, a positioning block, a first fixing bolt, a second fixing bolt, a third fixing bolt,

[0014] The lower surface of the positioning block is parallel to the upper surface of the bottom plate, and the contact surface of the positioning block and the thin-walled part is conformal to the first print forming surface of the thin-walled part.

[0015] The positioning block is provided with a third positioning pin hole, a fourth positioning pin hole, a first fixing hole, a second fixing hole and a third fixing hole,

[0016] The third positioning pin hole is concentric with the first positioning pin and the first positioning pin hole, and the fourth positioning pin hole is concentric with the second positioning pin and the second positioning pin hole.

[0017] The first fixing hole is concentric with the first fixing threaded hole, the second fixing hole is concentric with the second fixing threaded hole, and the third fixing hole is concentric with the third fixing threaded hole, and the first fixing bolt and the first fixing bolt hole, the second fixing bolt and the second fixing bolt hole, and the third fixing bolt and the third fixing bolt hole are screwed to fix the positioning block on the bottom plate.

[0018] Optionally, the extrusion part comprises: an extrusion block, a first extrusion bolt, a second extrusion bolt and a third extrusion bolt, wherein,

[0019] The extrusion block is in contact with the second print forming surface of the thin-walled part, and the contact surface is conformal to the second print forming surface of the thin-walled part.

[0020] The first extrusion bolt, the second extrusion bolt and the third extrusion bolt are concentric with the first extrusion threaded hole, the second extrusion threaded hole and the third extrusion threaded hole on the bottom plate, respectively, and the three extrusion bolts are screwed through the corresponding extrusion threaded holes to press the back side of the extrusion block, so that the extrusion block applies pressing force to the direction of the positioning block, and the thin-walled part is fixed between the positioning block and the extrusion block.

[0021] Optionally, the left support part comprises: a first support block, a first support shaft, a first support bolt, a second support bolt, a first support hole, a second support hole and a first nut, wherein,

[0022] The first supporting bolt is concentric with the first supporting hole and the first supporting threaded hole, the second supporting bolt is concentric with the second supporting hole and the second supporting threaded hole, and the supporting bolt is screwed through the corresponding supporting hole and supporting threaded hole to fix the left supporting part on the bottom plate.

[0023] Optionally, the right supporting part comprises a second supporting block, a second supporting shaft, a third supporting bolt, a fourth supporting bolt, a third supporting hole, a fourth supporting hole and a second nut,

[0024] The third supporting bolt is concentric with the third supporting hole and the third supporting threaded hole, the fourth supporting bolt is concentric with the fourth supporting hole and the fourth supporting threaded hole, and the supporting bolt is screwed through the corresponding supporting hole and supporting threaded hole to fix the right supporting part on the bottom plate.

[0025] Optionally, the positioning part is connected to the bottom plate through a positioning pin and a bolt.

[0026] Optionally, the left supporting part and the right supporting part are connected to the bottom plate through bolts respectively.

[0027] In a second aspect, an embodiment of the present application provides a thin-walled part machining method applied to the device described in any of the above.

[0028] When additive printing is performed on the thin-walled part, the main surface, the left and right end surfaces and the lower end surface of the thin-walled part are printed and formed;

[0029] The upper part of the thin-walled part to be machined is left with a machining allowance of 1.5mm-2mm on one side, and the connection area of the two-end weak circular ring of the part and the main body of the part is increased to form a reinforced connection;

[0030] An inner hole diameter is increased inside the reinforced connection, so that the inner hole diameter of the reinforced connection part is greater than the inner diameter of the to-be-machined circular ring by 1mm-1.5mm, forming a tool avoidance structure;

[0031] The thin-walled part is fixed on the machining device of the machine tool, and the thin-walled part is tightly fixed on the device bottom plate through the positioning part and the extrusion part;

[0032] The left and right end circular ring inner holes of the thin-walled part are machined and formed by using a milling and boring machining method, and then the middle hole of the thin-walled part is machined and formed by using a lengthened drill and a lengthened milling cutter;

[0033] The left supporting part and the right supporting part are installed at both ends of the machining device to support the two-end weak circular ring structure of the thin-walled part.

[0034] The other parts of the thin-walled part are machined and formed by running a numerical control program.

[0035] The present application has the advantages compared with the prior art:

[0036] The embodiment of the present application aims at the problems of difficult clamping and machining vibration of thin-walled parts, and increases the strengthening connection and tool avoidance structure by designing the process structure of additive printing, designs the machining device, clamps the parts while supporting the weak parts of the parts, assists to strengthen the rigidity of the part structure, avoids machining vibration, can effectively reduce the machining difficulty of thin-walled parts, and improves the machining quality and efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0037] Figure 1 A structural schematic diagram of a thin-walled part machining device provided by the embodiment of the present application is shown in FIG. 1.

[0038] Figure 2 A schematic diagram of a theoretical structure and an additive process structure of a thin-walled part provided by the embodiment of the present application is shown in FIG. 2.

[0039] Figure 3 A structural schematic diagram of a bottom plate provided by the embodiment of the present application is shown in FIG. 3.

[0040] Figure 4 A structural schematic diagram of a positioning part provided by the embodiment of the present application is shown in FIG. 4.

[0041] Figure 5 A structural schematic diagram of an extrusion part provided by the embodiment of the present application is shown in FIG. 5.

[0042] Figure 6 A structural schematic diagram of a left supporting part provided by the embodiment of the present application is shown in FIG. 6.

[0043] Figure 7 A structural schematic diagram of a right supporting part provided by the embodiment of the present application is shown in FIG. 7.

[0044] Figure 8 A step flow chart of a thin-walled part machining method provided by the embodiment of the present application is shown in FIG. 8. DETAILED DESCRIPTION

[0045] Embodiment one

[0046] Referring to Figure 1 , a structural schematic diagram of a thin-walled part machining device provided by the embodiment of the present application is shown in FIG. 1, as shown in the figure, the thin-walled part machining device can include: a bottom plate 1, a positioning part 2, an extrusion part 3, a left supporting part 4 and a right supporting part 5, wherein, Figure 1

[0047] The bottom plate 1 can be arranged on the machine tool platform to support the thin-walled part, the positioning part 2, the extrusion part 3, the left supporting part 4 and the right supporting part 5.

[0048] ​The positioning portion 2 , the extruding portion 3 , the left supporting portion 4 and the right supporting portion 5 are all arranged on a side of the base plate 1 away from the machine tool platform.

[0049] After the pressing force is applied to the thin-walled part, the thin-walled part is fixed between the positioning part 2 and the extrusion part 3, and the left supporting part 4 and the right supporting part 5 support the weak part of the thin-walled part.

[0050] In the embodiment of the present invention, the positioning portion 2 can be connected to the base plate 1 through positioning pins and bolts.

[0051] The left supporting portion 4 and the right supporting portion 5 are connected to the base plate 1 by bolts respectively.

[0052] In this embodiment, the positioning portion is positioned on the base plate by a positioning pin and is fixedly connected to the base plate by bolts, and is used to position the part on the base plate; the extrusion portion is located between the part and the extrusion wall of the base plate, and the part is fixed between the positioning portion and the extrusion portion by applying a clamping force to the part; the left support portion and the right support portion are arranged on the base plate and are respectively arranged at the left and right ends of the part, and are connected to the base plate by bolts. The position relative to the base plate can be fine-tuned, and the left and right support portions form contact support with the weak parts of the part to prevent deformation and vibration of the part during processing.

[0053] Next, combine Figure 3 The bottom plate provided by the embodiment of the present invention is described in detail as follows.

[0054] Reference Figure 3 , shows a structural schematic diagram of a base plate provided by an embodiment of the present invention, on which a first positioning pin hole 101, a second positioning pin hole 105, a first fixing threaded hole 102, a second fixing threaded hole 103, a third fixing threaded hole 104, first supporting threaded holes 106 and 110, second supporting threaded holes 108 and 111, third supporting threaded holes 109 and 112, an extruded wall structure, and a fourth supporting threaded hole 113 are provided.

[0055] The bottom plate can be fixedly connected to the positioning portion through the first positioning pin hole, the second positioning pin hole, the first fixing threaded hole, the second fixing threaded hole and the third fixing threaded hole.

[0056] The bottom plate can be fixedly connected to the left support part and the right support part respectively through the first support threaded hole and the second support threaded hole.

[0057] The base plate may be connected to the extrusion by an extruded wall structure.

[0058] Next, combine Figure 4 The positioning portion provided by the embodiment of the present invention is described in detail as follows.

[0059] Reference Figure 4 , which shows a structural schematic diagram of a positioning portion provided by an embodiment of the present invention.

[0060] As Figure 4 shown, the positioning part can include: a first positioning pin 21, a second positioning pin 26, a positioning block and pin 23, a first fixing bolt 22, a second fixing bolt 24, a third fixing bolt 25,

[0061] The lower surface of the positioning block can be parallelly aligned with the upper surface of the bottom plate, and the contact surface of the positioning block and the thin-walled part is conformal to the first print forming surface of the thin-walled part.

[0062] The positioning block is provided with a third positioning pin hole 231, a fourth positioning pin hole 235, a first fixing hole 232, a second fixing hole 233 and a third fixing hole 234,

[0063] The third positioning pin hole is concentric with the first positioning pin and the first positioning pin hole, and the fourth positioning pin hole is concentric with the second positioning pin and the second positioning pin hole.

[0064] The first fixing hole is concentric with the first fixing threaded hole, the second fixing hole is concentric with the second fixing threaded hole, and the third fixing hole is concentric with the third fixing threaded hole, and the first fixing bolt and the first fixing bolt hole, the second fixing bolt and the second fixing bolt hole, and the third fixing bolt and the third fixing bolt hole are screwed to fix the positioning block on the bottom plate.

[0065] In the embodiment of the application, the positioning pin and the positioning pin hole can adopt a close clearance fit.

[0066] Next, combined with Figure 5 the extrusion part provided by the embodiment of the application is described in detail as follows.

[0067] Referring to Figure 5 , a structural schematic diagram of an extrusion part provided by an embodiment of the application is shown.

[0068] As Figure 5 shown, the extrusion part can include: an extrusion block 31, a first extrusion bolt 32, a second extrusion bolt 33 and a third extrusion bolt 34, wherein,

[0069] The extrusion block can be in contact with the second print forming surface of the thin-walled part, and the contact surface is conformal to the second print forming surface of the thin-walled part.

[0070] The first extrusion bolt 32, the second extrusion bolt 33 and the third extrusion bolt 34 can be concentric with the first extrusion threaded hole, the second extrusion threaded hole and the third extrusion threaded hole on the bottom plate respectively, and the three extrusion bolts are screwed through the corresponding extrusion threaded holes to press the back side of the extrusion block, so that the extrusion block applies a pressing force to the direction of the positioning block, and the thin-walled part is fixed between the positioning block and the extrusion block.

[0071] In an embodiment of the present invention, the extrusion portion includes an extrusion block, a first extrusion bolt, a second extrusion bolt, and a third extrusion bolt. The extrusion block contacts the second printed surface of the part, with the contact surface conforming to the second printed surface of the part. The first extrusion bolt, the second extrusion bolt, and the third extrusion bolt are concentric with the first extrusion threaded hole, the second extrusion threaded hole, and the third extrusion threaded hole, respectively, on the base plate. The three extrusion bolts are screwed through the corresponding extrusion threaded holes to press against the back side of the extrusion block, causing the extrusion block to apply a compressive force toward the positioning block, thereby securing the part between the positioning block and the extrusion block.

[0072] Next, combine Figure 6 The left supporting portion provided by the embodiment of the present invention is described in detail as follows.

[0073] Reference Figure 6 , shows a structural schematic diagram of a left support portion provided by an embodiment of the present invention.

[0074] like Figure 6 As shown, the left support part may include: a first support block 41, a first support shaft 42, a first support bolt 44, a second support bolt 46, a first support hole 43, a second support hole 45 and a first nut 47, and may also include: 421-a first support column and 422-a first connecting column.

[0075] The first support bolt is concentric with the first support hole and the first support threaded hole, the second support bolt is concentric with the second support hole and the second support threaded hole, and the support bolt is screwed into the support threaded hole through the corresponding support hole to fix the left support part on the base plate.

[0076] In an embodiment of the present invention, the diameters of the first support hole and the second support hole are 0.5mm-1mm larger than the major diameters of the threads of the first support bolt and the second support bolt, ensuring that the left support block can be fine-tuned in position on the base plate; a first support shaft hole is provided above the left support block, and the axis of the first support shaft hole is collinear with the axis of the weak circular ring at the left end of the part; the first support shaft comprises: a first support column and a first connecting column; the outer diameter of the first support column is 0.02mm-0.04mm smaller than the inner diameter of the weak circular ring at the left end, and the right end face of the first support column is 1mm-2mm lower than the right end face of the weak circular ring at the left end; the first connecting column is a threaded structure, and the major diameter of the thread is 0.5mm-1mm smaller than the diameter of the first support hole, ensuring that the first support shaft can be fine-tuned in the upper and lower positions on the first support block, and the left end of the first connecting column protrudes from the left end of the first support hole and is screwed into the first nut. After tightening the first nut, the left end of the first support column is tightly fixed to the right end of the first support block.

[0077] Next, combine Figure 7 The right supporting portion provided by the embodiment of the present invention is described in detail as follows.

[0078] Referring to Figure 7 , a structure diagram of a right support part is shown.

[0079] As Figure 7 shown, the right support part can include: a second support block 51, a second support shaft 52, a third support bolt 54, a fourth support bolt 56, a third support hole 53, a fourth support hole 55, and a second nut 57. The right support part can also include: 521-second support column, 522-second connecting column.

[0080] The third support bolt is concentric with the third support hole and the third support threaded hole, and the fourth support bolt is concentric with the fourth support hole and the fourth support threaded hole. The support bolt is screwed through the corresponding support hole and support threaded hole to fix the right support part on the bottom plate.

[0081] In the embodiment of the application, the diameters of the third support hole and the fourth support hole are 0.5mm-1mm larger than the large diameter of the third support bolt and the fourth support bolt, which ensures that the right support block can be finely adjusted in position on the bottom plate. The right support block has a second support shaft hole above it, and the axis of the second support shaft hole is collinear with the axis of the right end weak circular ring. The second support shaft includes: a second support column, a second connecting column. The outer diameter of the second support column is 0.02mm-0.04mm smaller than the inner diameter of the right end weak circular ring, and the left end surface of the second support column is 1mm-2mm lower than the left end surface of the right end weak circular ring. The second connecting column is a threaded structure, and the large diameter of the thread is 0.5mm-1mm smaller than the diameter of the second support hole, which ensures that the second support shaft can be finely adjusted in position on the second support block. The right end of the second connecting column protrudes from the right end of the second support hole and is screwed with the second nut. After tightening the second nut, the right end of the second support column is tightly fixed with the left end of the second support block.

[0082] When using the above thin-walled part processing device for additive printing of thin-walled parts, the part main surface, left and right end surfaces, and lower end surface are printed and formed, the upper part to be processed circular ring is left with a machining allowance of 1.5mm-2mm on one side, and the connection area between the two end strength weak circular rings and the part main body is increased to form a reinforced connection, which increases the overall structural strength. An inner hole diameter is added inside the reinforced connection, so that the inner hole diameter of the reinforced connection part is 1mm-1.5mm larger than the inner diameter of the part to be processed circular ring, forming a tool avoidance structure (such as Figure 2The thin-walled part is placed on a machining device fixed on a machine tool, the part is tightly fixed on the device bottom plate through the positioning part and the extrusion part, the left and right end inner holes of the thin-walled part are machined and formed by adopting milling and boring machining mode, then the middle hole position of the part is machined and formed by adopting the machining mode of using a lengthened drill to drill and then using a lengthened milling cutter to insert and cut. The left support part and the right support part are installed at the two ends of the machining device to support the weak circular ring structure at the two ends of the part, and the other parts of the part are machined and formed by running a numerical control program.

[0083] Embodiment two

[0084] Referring to Figure 8 , a step flow chart of a thin-walled part machining method provided by an embodiment of the present application is shown, as Figure 8 shown, the thin-walled part machining method can include the following steps:

[0085] Step 801: When additive printing is performed on a thin-walled part, the main body surface, left and right end surfaces and lower end surface of the thin-walled part are printed and formed.

[0086] The embodiment of the present application can be applied to the thin-walled part machining device in the above-mentioned embodiment one.

[0087] When additive printing is performed on a thin-walled part, the main body surface, left and right end surfaces and lower end surface of the thin-walled part can be printed and formed.

[0088] Step 802: A machining allowance of 1.5mm-2mm is left on one side of the upper part to-be-machined circular ring of the thin-walled part, and the connection area of the weak circular ring at the two ends of the part and the main body of the part is increased to form a reinforced connection.

[0089] When additive printing is performed on a thin-walled part, after the main body surface, left and right end surfaces and lower end surface of the thin-walled part are printed and formed, a machining allowance of 1.5mm-2mm can be left on one side of the upper part to-be-machined circular ring of the part, and the connection area of the weak circular ring at the two ends of the part and the main body of the part is increased to form a reinforced connection, thereby increasing the overall structural strength.

[0090] Step 803: The inner hole diameter inside the reinforced connection is increased, so that the inner hole diameter of the reinforced connection part is greater than the inner diameter of the to-be-machined circular ring by 1mm-1.5mm to form a tool avoiding structure.

[0091] Further, the inner hole diameter inside the reinforced connection can be increased, so that the inner hole diameter of the reinforced connection part is greater than the inner diameter of the to-be-machined circular ring by 1mm-1.5mm to form a tool avoiding structure, thereby avoiding interference when the middle hole position is machined.

[0092] Step 804: The thin-walled part is fixed on a machining device on a machine tool, and the thin-walled part is tightly fixed on the device bottom plate through the positioning part and the extrusion part.

[0093] Step 805: the left and right end annular inner holes of the thin-walled part are processed into shape by milling and boring, and then the middle hole of the thin-walled part is processed into shape by drilling with an extended drill and then inserting and cutting with an extended milling cutter.

[0094] After the above operations are completed, the thin-walled part can be placed on a processing device fixed on a machine tool, and the part is pressed and fixed on the device bottom plate through the positioning part and the extrusion part, the left and right end annular inner holes of the thin-walled part are processed into shape by milling and boring, and then the middle hole of the part is processed into shape by drilling with an extended drill and then inserting and cutting with an extended milling cutter.

[0095] Step 806: left and right support parts are installed at both ends of the processing device to support the weak annular structure at both ends of the thin-walled part.

[0096] After the middle hole of the thin-walled part is processed into shape, the left and right support parts can be installed at both ends of the processing device to support the weak annular structure at both ends of the thin-walled part.

[0097] Step 807: the other parts of the thin-walled part are processed into shape by running a numerical control program.

[0098] Then, the other parts of the thin-walled part can be processed into shape by running a numerical control program.

[0099] The embodiment of the present application can effectively reduce the processing difficulty of the thin-walled part and improve the processing quality and efficiency by designing the process structure of additive printing, adding the strengthening connection and tool avoidance structure, designing the machining device, clamping the part while supporting the weak part of the part, and assisting in strengthening the rigidity of the part structure to avoid processing vibration.

[0100] The specific embodiments described in the present application can enable those skilled in the art to have a more comprehensive understanding of the present application, but in no way limit the present application. Therefore, those skilled in the art should understand that the present application can still be modified or replaced by equivalents; and all technical solutions and improvements that do not deviate from the spirit and technical essence of the present application should be covered in the protection scope of the present application patent.

[0101] The contents not described in detail in the specification of the present application are the known technology of those skilled in the art.

Claims

1. A thin-walled parts processing device, characterized in that: The device comprises: a bottom plate, a positioning portion, a pressing portion, a left supporting portion and a right supporting portion, wherein: The bottom plate is arranged on the machine tool platform to support the thin-walled part, the positioning part, the extrusion part, the left support part and the right support part; The positioning portion, the extruding portion, the left supporting portion and the right supporting portion are all arranged on a side of the bottom plate away from the machine tool platform; After applying a pressing force to the thin-walled part, the thin-walled part is fixed between the positioning part and the extrusion part, and the left supporting part and the right supporting part support the weak ring structures at both ends of the thin-walled part; The bottom plate is provided with a first supporting threaded hole, a second supporting threaded hole, a third supporting threaded hole and a fourth supporting threaded hole; The left support portion includes: a first support block, a first support shaft, a first support bolt, a second support bolt, a first support hole, a second support hole and a first nut, wherein, The first support bolt is concentric with the first support hole and the first support threaded hole, and the second support bolt is concentric with the second support hole and the second support threaded hole. The support bolts are screwed into the support threaded holes through the corresponding support holes to fix the left support portion to the bottom plate. The first support shaft comprises: a first support column (421) and a first connecting column (422), wherein the outer diameter of the first support column is 0.02mm-0.04mm smaller than the inner diameter of the left end weak ring, and the right end surface of the first support column is 1mm-2mm lower than the right end surface of the left end weak ring; the first connecting column is a threaded structure, and the major diameter of the thread is 0.5mm-1mm smaller than the diameter of the first support hole, so as to ensure that the upper and lower positions of the first support shaft on the first support block can be fine-tuned, and the left end of the first connecting column protrudes from the left end of the first support hole and is screwed into the first nut, and after tightening the first nut, the left end of the first support column is tightly fixed to the right end of the first support block; The right support portion includes: a second support block, a second support shaft, a third support bolt, a fourth support bolt, a third support hole, a fourth support hole and a second nut. The third support bolt is concentric with the third support hole and the third support threaded hole, and the fourth support bolt is concentric with the fourth support hole and the fourth support threaded hole. The support bolts are screwed into the support threaded holes through the corresponding support holes to fix the right support portion to the base plate. The second support shaft comprises: a second support column (521) and a second connecting column (522); the outer diameter of the second support column is 0.02mm-0.04mm smaller than the inner diameter of the right end weak ring, and the left end surface of the second support column is 1mm-2mm lower than the left end surface of the right end weak ring; the second connecting column is a threaded structure, and the major diameter of the thread is 0.5mm-1mm smaller than the diameter of the second support hole, so as to ensure that the upper and lower positions of the second support shaft on the second support block can be fine-tuned, and the right end of the second connecting column protrudes from the right end of the second support hole and is screwed into the second nut. After tightening the second nut, the right end of the second support column is tightly fixed to the left end of the second support block; The first support column (421) and the second support column (521) are inserted into the weak ring structures at both ends of the thin-walled part; Leave a machining allowance of 1.5mm-2mm on one side of the upper ring to be machined of the thin-walled part, and increase the connection area between the weak rings at both ends of the part and the part body to form a strengthened connection; Increase the inner hole diameter inside the reinforced connection so that the inner hole diameter of the reinforced connection part is 1mm-1.5mm larger than the inner diameter of the ring to be processed, forming a tool avoidance structure.

2. The device according to claim 1, characterized in that The bottom plate is provided with a first positioning pin hole, a second positioning pin hole, a first fixing threaded hole, a second fixing threaded hole, a third fixing threaded hole and an extrusion wall structure. The bottom plate is fixedly connected to the positioning portion through the first positioning pin hole, the second positioning pin hole, the first fixing threaded hole, the second fixing threaded hole and the third fixing threaded hole; The bottom plate is fixedly connected to the left support portion and the right support portion through the first support threaded hole and the second support threaded hole respectively; The bottom plate is connected to the extrusion portion through the extrusion wall structure.

3. The device according to claim 2, characterized in that The positioning part includes: a first positioning pin, a second positioning pin, a positioning block, a first fixing bolt, a second fixing bolt, and a third fixing bolt. The lower surface of the positioning block is aligned parallel to the upper surface of the base plate, and the contact surface between the positioning block and the thin-walled part conforms to the first printed forming surface of the thin-walled part; The positioning block is provided with a third positioning pin hole, a fourth positioning pin hole, a first fixing hole, a second fixing hole and a third fixing hole. The third positioning pin hole is concentric with the first positioning pin and the first positioning pin hole, and the fourth positioning pin hole is concentric with the second positioning pin and the second positioning pin hole; The first fixing hole is concentric with the first fixing threaded hole, the second fixing hole is concentric with the second fixing threaded hole, and the third fixing hole is concentric with the third fixing threaded hole. The positioning block is fixed to the base plate by screwing the first fixing bolt and the first fixing bolt hole, the second fixing bolt and the second fixing bolt hole, and the third fixing bolt and the third fixing bolt hole.

4. The device according to claim 3, characterized in that The extrusion part includes: an extrusion block, a first extrusion bolt, a second extrusion bolt and a third extrusion bolt, wherein: The extrusion block contacts the second printed forming surface of the thin-walled part, and the contact surface conforms to the second printed forming surface of the thin-walled part; The first extrusion bolt, the second extrusion bolt and the third extrusion bolt are respectively concentric with the first extrusion threaded hole, the second extrusion threaded hole and the third extrusion threaded hole on the base plate. The extrusion bolts at these three locations are screwed through the corresponding extrusion threaded holes to press the back side of the extrusion block, so that the extrusion block applies a pressing force toward the positioning block, thereby fixing the thin-walled part between the positioning block and the extrusion block.

5. The device according to claim 2, characterized in that The positioning portion is connected to the base plate via positioning pins and bolts.

6. The device according to claim 2, characterized in that The left supporting portion and the right supporting portion are respectively connected to the bottom plate through bolts.

7. A method for processing thin-walled parts, applied to the device according to any one of claims 1 to 6, characterized in that: The method comprises: When performing additive printing on thin-walled parts, the main body surface, left and right end surfaces and lower end surface of the thin-walled parts are printed and formed; Fixing the thin-walled part on a processing device on a machine tool, and pressing and fixing the thin-walled part on the bottom plate of the device through a positioning part and an extrusion part; The inner holes of the circular rings at the left and right ends of the thin-walled part are machined by milling and boring, and the hole in the middle of the thin-walled part is machined by drilling with an extended drill bit and then slotting with an extended milling cutter; A left support part and a right support part are installed at both ends of the processing device to support the weak ring structures at both ends of the thin-walled part; The CNC program is run to process and shape other parts of the thin-walled part.

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