Thin-wall special-shaped part machining method and tool

Abstract

The thin-wall special-shaped part machining method comprises the steps that according to a design drawing of a thin-wall special-shaped part, a positioning pin hole and a fixing screw hole are machined in a to-be-machined part, and the to-be-machined part is fixed to a tray clamp through the positioning pin hole and the fixing screw hole; the cavity face of the to-be-machined part is machined through the machining tool, the to-be-machined part is obtained, and the to-be-machined part is pressed and fixed to the tray clamp through the gland and the pressing plate; the tool tray is rotatably connected to the horizontal direction of a machining machine tool through the tool base, the side face of the part to be machined is machined, and the part to be machined is obtained; and the tool base is rotationally adjusted to a preset angle through the dial indicator and fixed to the fixed vertical plate, inclined holes are machined in all the side faces of the part to be machined, and the thin-wall special-shaped part is obtained. According to the thin-wall special-shaped part machining method and tool, the thin-wall special-shaped part can be rapidly fixed, and no damage is caused to the semi-finished thin-wall special-shaped part.

Description

Technical Field

[0001] The present application relates to the technical field of processing thin-walled special-shaped parts, and in particular to a processing method and tooling for thin-walled special-shaped parts. Background Art

[0002] In the manufacture of mechanical equipment, various types of thin-walled special-shaped parts are often used, such as aircraft engine blade structural parts, automobile engine cylinders and internal structural parts of electronic products. By using thin-walled special-shaped parts, the weight of the device itself can be reduced and specific functions can be met, thereby improving the performance of the device and energy efficiency. However, thin-walled special-shaped parts usually have complex shapes and thin wall thicknesses, are easily deformed during processing, and require high processing accuracy.

[0003] In the prior art, when processing thin-walled special-shaped parts, it is necessary to use a clamping device such as a vise to fix and clamp the material with a thinner wall thickness before processing. When clamping and fixing, it is necessary to control the clamping surface according to the processing needs to avoid the clamping device from hindering the processing. When processing the cavity surface and the four side surfaces, it is necessary to remove the semi-finished parts after processing one surface, adjust the orientation and then process. In the process of multiple disassembly and clamping, the processing accuracy will be low due to multiple clamping, affecting the quality of thin-walled special-shaped parts, and due to the thin wall thickness, the parts are easily deformed.

[0004] Therefore, it is necessary to improve one or more problems existing in the above-mentioned related technical solutions.

[0005] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0006] The purpose of the embodiments of the present disclosure is to provide a method and tooling for processing thin-walled special-shaped parts, thereby overcoming one or more problems caused by the limitations and defects of the relevant technology at least to a certain extent.

[0007] In a first aspect, the present application provides a method for processing thin-walled special-shaped parts, comprising:

[0008] According to the design drawing of the thin-walled special-shaped part, a positioning pin hole and a fixing screw hole are processed on the first part to be processed, and the first part to be processed is fixed on the pallet fixture through the positioning pin hole and the fixing screw hole;

[0009] Processing the cavity surface of the first part to be processed by a processing machine tool to obtain a second part to be processed, and pressing and fixing the second part to be processed on the pallet fixture by a pressure cover and a pressure plate;

[0010] The tooling tray is rotatably connected to the processing machine tool in the horizontal direction through the tooling base, and each side surface of the second part to be processed is processed by the processing machine tool to obtain a third part to be processed;

[0011] The tooling base is rotated and adjusted to the preset angle by a dial indicator and fixed on a fixed vertical plate. An inclined hole is processed on each side of the third part to be processed by a processing machine to obtain a thin-walled special-shaped part.

[0012] In a possible implementation, the step of machining a positioning pin hole and a fixing screw hole on the first part to be machined according to the design drawing of the thin-walled special-shaped part, and fixing the first part to be machined on the pallet fixture through the positioning pin hole and the fixing screw hole includes:

[0013] According to the design drawing of the thin-walled special-shaped part, at least two positioning pin holes and at least two fixing screw holes are processed on the redundant area of ​​the first part to be processed compared with the target thin-walled special-shaped part;

[0014] The first part to be processed is placed on the pallet fixture, limited by the positioning pin hole, and then fixed on the pallet fixture by the fixing screw hole.

[0015] In a possible implementation manner, the step of processing the cavity surface of the first part to be processed by a processing machine tool to obtain a second part to be processed, and pressing and fixing the second part to be processed on the pallet fixture by a pressure cover and a pressure plate includes:

[0016] The pallet fixture is fixed on a processing machine tool through a tooling base, the cavity surface of the first part to be processed faces the processing end of the processing machine tool, and the cavity surface of the first part to be processed is processed by the processing end to obtain a second part to be processed;

[0017] The redundant area after cutting is removed, and the pressure cover is placed on the second part to be processed, and then the second part to be processed is pressed and fixed on the pallet fixture by a pressure plate.

[0018] In a possible implementation, the step of rotatably connecting the tooling tray to the horizontal direction of the processing machine tool through the tooling base, and processing each side surface of the second part to be processed by the processing machine tool to obtain the third part to be processed includes:

[0019] The tooling base is fixed on a processing machine tool through a fixed vertical plate, the first side of the second part to be processed faces a processing end of the processing machine tool, and the first side of the second part to be processed is processed through the processing end;

[0020] The tooling pallet is rotatably connected to the tooling base, and the tooling pallet is rotated to process the second side surface and the third side surface respectively to obtain a third part to be processed.

[0021] In a possible implementation manner, the step of rotating and adjusting the tooling base to a preset angle by a dial indicator, fixing it on a fixed vertical plate, and machining an oblique hole on each side of the third part to be machined by a machining machine to obtain a thin-walled special-shaped part includes:

[0022] A macro program is written by using trigonometric functions to obtain a moving distance for rotating the tooling base to the preset angle;

[0023] The tooling base is rotated and adjusted to a preset angle by using the dial indicator, and fixed on the fixed vertical plate;

[0024] The processing end is used to process an oblique hole on the first side surface of the third part to be processed, and the tooling tray is rotated to process oblique holes on the second side surface and the third side surface respectively, so as to obtain a thin-walled special-shaped part.

[0025] In a second aspect, the present application provides a thin-walled special-shaped parts processing tool, which is used to perform the above-mentioned thin-walled special-shaped parts processing method, and the tool comprises:

[0026] Pallet fixture, used to limit and fix the parts to be processed;

[0027] A clamping mechanism, comprising a pressure cover and a pressure plate, wherein the pressure cover is used to press the part to be processed, and the part to be processed is clamped and fixed on the pallet fixture through the pressure plate;

[0028] A tooling pallet, fixedly arranged on the bottom surface of the pallet fixture, and having a rotating shaft in the middle of the top surface;

[0029] The tooling base comprises a fixing part and a fixing seat, wherein the fixing part has a rotating shaft hole in the middle, the rotating shaft is rotatably and adjustably connected to the rotating shaft hole, and the fixing part is fixedly connected to the fixing seat;

[0030] The fixed vertical plate is adjustably connected to the fixing seat and is used to fix the fixing seat on the processing machine after adjusting the angle.

[0031] In a possible implementation, the tray fixture includes: a placement plate, a limit pin, and a first fixing hole;

[0032] The top surface of the placement plate is provided with the limit pin and the first fixing hole, the limit pin is used to connect and limit with the pin hole at the bottom of the part to be processed, and the first fixing hole is used to connect with the fixing bolt passing through the part to be processed.

[0033] In a possible embodiment, the top surface of the tooling pallet has a first limit frame, the top surface of the fixed part has a limit block, the first limit frame is engaged and fixed with the limit block, the first limit frame has four limit slots, the rotation angle between adjacent limit slots is 90°, there are four limit blocks, and the rotation angle between adjacent limit blocks is 90°.

[0034] In a possible implementation manner, the top surface of the placement plate further has grooves at both ends adjacent to the pressure plate.

[0035] In a possible implementation, the tooling base further includes: an auxiliary fixing device, which is a pneumatic switch connected to the shaft hole and is used to adsorb the tooling tray onto the fixing portion when turned on.

[0036] The technical solution provided by this application may have the following beneficial effects:

[0037] Through the above-mentioned technical scheme, the present application can integrate the two methods of bolt fixing and pressure plate pressing to achieve rapid fixation of thin-walled special-shaped parts. The problem of large clamping surface size of the clamping device hindering the processing of thin-walled special-shaped parts will not occur, and no damage will be caused to the semi-finished thin-walled special-shaped parts.

[0038] At the same time, by adjusting the angle of the tooling base, the fixed-angle inclined hole processing on the side of thin-walled special-shaped parts can be achieved.

[0039] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The accompanying drawings herein are incorporated into the specification and constitute a part of the specification, illustrate embodiments consistent with the present disclosure, and together with the specification are used to explain the principles of the present disclosure. Obviously, the accompanying drawings described below are only some embodiments of the present disclosure, and for ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work.

[0041] Figure 1 A schematic diagram showing a process of a method for processing thin-walled special-shaped parts in an exemplary embodiment of the present disclosure;

[0042] Figure 2 A detailed schematic diagram showing a method for processing thin-walled special-shaped parts in an exemplary embodiment of the present disclosure;

[0043] Figure 3 A schematic diagram of a pallet fixture for processing thin-walled special-shaped parts in an exemplary embodiment of the present disclosure is shown;

[0044] Figure 4 A schematic diagram showing the part placement and pallet fixture bolt fixing of a thin-walled special-shaped part processing tooling in an exemplary embodiment of the present disclosure is shown;

[0045] Figure 5 A schematic diagram showing the placement of parts and the fixation of the tray clamp pressing mechanism of the thin-walled special-shaped parts processing tooling in the exemplary embodiment of the present disclosure is shown;

[0046] Figure 6 A front view showing the part placement and the fixation of the tray clamp pressing mechanism of the thin-walled special-shaped part processing tooling in the exemplary embodiment of the present disclosure;

[0047] Figure 7 A schematic diagram showing the structure of a tray fixture and a tooling tray of a thin-walled special-shaped part processing tooling in an exemplary embodiment of the present disclosure is shown;

[0048] Figure 8 A schematic diagram showing the structure of a tool base and a fixed vertical plate of a thin-walled special-shaped part processing tool in an exemplary embodiment of the present disclosure is shown;

[0049] Fig. 9 A schematic diagram of the angle adjustment structure of a tool base for processing thin-walled special-shaped parts in an exemplary embodiment of the present disclosure is shown.

[0050] Reference numerals:

[0051] 100. Parts to be processed;

[0052] 200, tray clamp, 210, placement plate, 220, limit pin, 230, first fixing hole, 240, groove;

[0053] 300, clamping mechanism, 310, pressure cover, 320, pressure plate;

[0054] 400, tooling tray, 410, first limiting frame, 420, rotating shaft;

[0055] 500, tooling base, 510, fixing part, 511, fixing plate, 512, rotating shaft hole, 513, limiting block, 520, fixing seat, 530, auxiliary fixing device;

[0056] 600. Fix the vertical board. DETAILED DESCRIPTION

[0057] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that the disclosure will be more comprehensive and complete and to fully convey the concepts of the example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0058] In addition, the accompanying drawings are only schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the figures represent the same or similar parts, and their repeated description will be omitted. Some of the block diagrams shown in the accompanying drawings are functional entities and do not necessarily correspond to physically or logically independent entities. These functional entities can be implemented in software form, or implemented in one or more hardware modules or integrated circuits, or implemented in different networks and / or processor devices and / or microcontroller devices.

[0059] In this example implementation, a method for processing thin-walled special-shaped parts is first provided. Figure 1-2 As shown in , the method includes:

[0060] Step S100: According to the design drawing of the thin-walled special-shaped part, a positioning pin hole and a fixing screw hole are processed on the first part to be processed, and the first part to be processed is fixed on the pallet fixture through the positioning pin hole and the fixing screw hole.

[0061] Step S200: machining the cavity surface of the first part to be machined by a machining machine to obtain a second part to be machined, and pressing and fixing the second part to be machined on the pallet fixture by a pressing cover and a pressing plate.

[0062] Step S300: rotatably connect the tooling tray to the horizontal direction of the processing machine via the tooling base, and process each side surface of the second part to be processed by the processing machine to obtain a third part to be processed.

[0063] Step S400: The tooling base is rotated and adjusted to a preset angle by a dial indicator, fixed on a fixed vertical plate, and an inclined hole is processed on each side of the third part to be processed by a processing machine to obtain a thin-walled special-shaped part.

[0064] Through the above-mentioned thin-walled special-shaped parts processing method, the first part to be processed can be fixed by the positioning pin hole and the fixing screw hole, and the positioning pin hole and the fixing screw hole are located in the redundant part of the first part to be processed. The positioning pin hole and the fixing screw hole are processed in the first part to be processed. After the cavity surface is processed, they will be naturally separated. After the fixing bolts are removed, the redundant part can be removed. Then, the second part to be processed is pressed and fixed on the tray fixture through the pressure cover and the pressure plate, and then the tooling tray is rotatably connected through the tooling base, so that each side of the second part to be processed can be processed without disassembly. And then, the tooling base is rotated and adjusted to a preset angle by a dial indicator, so that the inclined holes on each side of the third part to be processed can be processed, and high-precision thin-walled special-shaped parts can be obtained efficiently.

[0065] In one embodiment, the step S100 includes:

[0066] Step S110: According to the design drawing of the thin-walled special-shaped part, at least two positioning pin holes and at least two fixing screw holes are processed on the redundant area between the first part to be processed and the target thin-walled special-shaped part.

[0067] Step S120: placing the first part to be processed on a pallet fixture, limiting the position by the positioning pin hole, and then fixing it on the pallet fixture by the fixing screw hole.

[0068] Among them, the positioning pin hole and the fixing screw hole are located in the excess part of the first part to be processed. The positioning pin hole and the fixing screw hole are processed in the first part to be processed. They will be naturally separated after the cavity surface is processed. The excess part can be removed after the fixing bolt is removed.

[0069] Optionally, bolts are passed through the fixing screw holes to be fixedly connected to the fixing holes on the pallet clamp, each positioning pin hole corresponds to a positioning pin, and each fixing screw hole corresponds to a fixing screw hole.

[0070] In one embodiment, the step S200 includes:

[0071] Step S210: fix the pallet fixture on the processing machine through the tooling base, with the cavity surface of the first part to be processed facing the processing end of the processing machine, and process the cavity surface of the first part to be processed through the processing end to obtain a second part to be processed.

[0072] Step S220: removing the redundant area after cutting, covering the second part to be processed with a pressure cover, and then pressing and fixing the second part to be processed on the pallet fixture by a pressure plate.

[0073] Optionally, the cavity surface of the first part to be processed faces upward, the processing end of the processing machine tool is located above the cavity surface of the first part to be processed, and the cavity surface of the first part to be processed is processed according to a preset processing program.

[0074] It should be noted that, by using the pressure cover in conjunction with the pressure plate, the second part to be processed can be pressed and fixed without damaging the surface of the processed cavity.

[0075] In one embodiment, the step S300 includes:

[0076] Step S310: fix the tooling base on a processing machine via a fixed vertical plate, with the first side of the second part to be processed facing a processing end of the processing machine, and process the first side of the second part to be processed via the processing end.

[0077] Step S320: rotatably connect the tooling pallet to the tooling base, rotate the tooling pallet, and process the second side surface and the third side surface respectively to obtain a third part to be processed.

[0078] The fixed vertical plate is vertically fixed on the processing machine, the tooling base is fixed on one side of the fixed vertical plate, and the tooling tray is rotatably connected to the tooling base and is snap-fitted and fixed when rotated to a preset position.

[0079] In one embodiment, the step S400 includes:

[0080] Step S410: writing a macro program through trigonometric functions to obtain a moving distance for rotating the tooling base to the preset angle;

[0081] Step S420: rotating and adjusting the tooling base to the preset angle by using the dial indicator, and fixing it on the fixed vertical plate;

[0082] Step S430: Processing an oblique hole on the first side surface of the third part to be processed by the processing end, and processing oblique holes on the second side surface and the third side surface respectively by rotating the tooling tray to obtain a thin-walled special-shaped part.

[0083] It should be noted that after the tooling base is rotated to the preset angle, since the tooling tray can be rotatably connected to the tooling base and can be snap-fitted and fixed when rotated to the preset position, it can be ensured that when the tooling fixture is rotated, an inclined hole with a preset angle is processed on each side.

[0084] Optionally, in one embodiment, the preset angle can be verified and adjusted by a macro program, such as Fig. 9 As shown, the preset angle is 40°, so the angle verification macro program is:

[0085] G1G91 X-90Z[90*tan

[40] ]F1000;

[0086] X90 Z-[90*tan

[40] ];

[0087] M99.

[0088] This example embodiment also provides a thin-walled special-shaped parts processing tooling, referring to Figure 3-9 As shown, the tooling may include: a pallet fixture 200 for limiting and fixing the part 100 to be processed;

[0089] The clamping mechanism 300 includes a pressure cover 310 and a pressure plate 320 , wherein the pressure cover 310 is used to press the part to be processed 100 , and the part to be processed 100 is pressed and fixed on the pallet fixture 200 by the pressure plate 320 ;

[0090] A tooling pallet 400 is fixedly arranged on the bottom surface of the pallet fixture 200, and has a rotating shaft 420 in the middle of the top surface;

[0091] The tooling base 500 has a fixing portion 510 and a fixing seat 520. The fixing portion 510 has a rotating shaft hole 512 in the middle thereof. The rotating shaft 420 is rotatably and adjustably connected to the rotating shaft hole 512. The fixing portion 510 is fixedly connected to the fixing seat 520.

[0092] The fixed vertical plate 600 is adjustably connected to the fixing seat 520 and is used to fix the fixing seat 520 on the processing machine after adjusting the angle.

[0093] It should be noted that optional, such as Figure 5 As shown, the shape of the pressure cover 310 is the same as that of the thin-walled special-shaped part, and the pressure plate 320 is an L-shaped plate, which is fastened to the tooling tray 400 by bolts, so as to press the part to be processed.

[0094] In one embodiment, the tray fixture 200 includes: a placement plate 210, a limiting pin 220, and a first fixing hole 230;

[0095] The top surface of the placement plate 210 is provided with the limiting pin 220 and the first fixing hole 230, wherein the limiting pin 220 is used to connect and limit with the pin hole at the bottom of the part to be processed 100, and the first fixing hole 230 is used to connect with the fixing bolt passing through the part to be processed 100.

[0096] Furthermore, the top surface of the placement tray 210 has grooves 240 at both ends adjacent to the pressing plate 320 .

[0097] It should be noted that the groove 240 enables the processing of the side surface of the workpiece to be processed at the processing end of the processing machine tool without being restricted by the placement plate 210 .

[0098] In one embodiment, the top surface of the tooling pallet 400 has a first limit frame 410, the top surface of the fixed portion 510 has a limit block 513, the first limit frame 410 is engaged and fixed with the limit block 513, the first limit frame 410 has four limit slots, the rotation angles between adjacent limit slots are 90°, there are four limit blocks 513, the rotation angles between adjacent limit blocks 513 are 90°.

[0099] Optionally, the limiting groove is V-shaped, which facilitates centering when the limiting block 513 is engaged.

[0100] Optionally, the fixing portion 510 further includes a fixing plate 511, and the shaft hole 512 and the limit block 513 are both located on the fixing plate 511. With this embodiment, the position of the machining surface of the part after rotation adjustment can be adjusted by rotating the fixing plate.

[0101] It should be noted that, by setting the rotation angles between the limit blocks 513 to 90° and the rotation angles between the adjacent limit slots to 90°, it is possible to achieve that each time the pallet fixture rotates, it can face one surface of the part 100 to be processed.

[0102] In one embodiment, the tooling base 500 further includes: an auxiliary fixing device 530, which is a pneumatic switch connected to the shaft hole 512 and is used to adsorb the tooling tray 400 onto the fixing portion 510 when turned on.

[0103] It should be noted that by vertically setting the fixing seat 520 on the processing machine, the part is vertically set on the processing machine. When the weight of the part to be processed is large, the auxiliary fixing device 530 can be used to firmly fix the tray fixture with the part to be processed 100 on the tooling base.

[0104] In the description of the present disclosure, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present disclosure.

[0105] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present disclosure, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0106] In the present disclosure, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0107] In the present disclosure, unless otherwise expressly specified and limited, a first feature being “above” or “below” a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being “above”, “above”, and “above” a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0108] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.

[0109] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application is intended to cover any modification, use or adaptation of the present disclosure, which follows the general principles of the present disclosure and includes common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present disclosure are indicated by the appended claims.

Claims

1. A method for processing thin-walled special-shaped parts, characterized in that: include: According to the design drawing of the thin-walled special-shaped part, a positioning pin hole and a fixing screw hole are processed on the first part to be processed, and the first part to be processed is fixed on the pallet fixture through the positioning pin hole and the fixing screw hole; Processing the cavity surface of the first part to be processed by a processing machine tool to obtain a second part to be processed, and pressing and fixing the second part to be processed on the pallet fixture by a pressure cover and a pressure plate; The tooling tray is rotatably connected to the processing machine tool in the horizontal direction through the tooling base, and each side surface of the second part to be processed is processed by the processing machine tool to obtain a third part to be processed; The tooling base is rotated and adjusted to a preset angle by a dial indicator and fixed on a fixed vertical plate. An inclined hole is processed on each side of the third part to be processed by a processing machine to obtain a thin-walled special-shaped part.

2. The method for processing thin-walled special-shaped parts according to claim 1, characterized in that: The step of machining a positioning pin hole and a fixing screw hole on the first part to be machined according to the design drawing of the thin-walled special-shaped part, and fixing the first part to be machined on the pallet fixture through the positioning pin hole and the fixing screw hole comprises: According to the design drawing of the thin-walled special-shaped part, at least two positioning pin holes and at least two fixing screw holes are processed on the redundant area of ​​the first part to be processed compared with the target thin-walled special-shaped part; The first part to be processed is placed on the pallet fixture, limited by the positioning pin hole, and then fixed on the pallet fixture by the fixing screw hole.

3. The method for processing thin-walled special-shaped parts according to claim 1, characterized in that: The step of processing the cavity surface of the first part to be processed by a processing machine tool to obtain a second part to be processed, and pressing and fixing the second part to be processed on the pallet fixture by a pressure cover and a pressure plate includes: The pallet fixture is fixed on a processing machine tool through a tooling base, the cavity surface of the first part to be processed faces the processing end of the processing machine tool, and the cavity surface of the first part to be processed is processed by the processing end to obtain a second part to be processed; The redundant area after cutting is removed, and the pressure cover is placed on the second part to be processed, and then the second part to be processed is pressed and fixed on the pallet fixture by a pressure plate.

4. The method for processing thin-walled special-shaped parts according to claim 1, characterized in that: The step of rotatably connecting the tooling tray to the horizontal direction of the processing machine tool through the tooling base, and processing each side surface of the second part to be processed by the processing machine tool to obtain the third part to be processed includes: The tooling base is fixed on a processing machine tool through a fixed vertical plate, the first side of the second part to be processed faces a processing end of the processing machine tool, and the first side of the second part to be processed is processed through the processing end; The tooling pallet is rotatably connected to the tooling base, and the tooling pallet is rotated to process the second side surface and the third side surface respectively to obtain a third part to be processed.

5. The method for processing thin-walled special-shaped parts according to claim 1, characterized in that: The step of rotating and adjusting the tooling base to a preset angle by a dial indicator, fixing it on a fixed vertical plate, and machining an oblique hole on each side of the third part to be machined by a machining machine to obtain a thin-walled special-shaped part comprises: A macro program is written by using trigonometric functions to obtain a moving distance for rotating the tooling base to the preset angle; The tooling base is rotated and adjusted to the preset angle by using the dial indicator, and fixed on the fixed vertical plate; The processing end is used to process an oblique hole on the first side surface of the third part to be processed, and the tooling tray is rotated to process oblique holes on the second side surface and the third side surface respectively, so as to obtain a thin-walled special-shaped part.

6. A tooling for processing thin-walled special-shaped parts, characterized in that: The tooling is used to perform the thin-walled special-shaped parts processing method according to any one of claims 1 to 5, and the tooling comprises: Pallet fixture, used to limit and fix the parts to be processed; A clamping mechanism, comprising a pressure cover and a pressure plate, wherein the pressure cover is used to press the part to be processed, and the part to be processed is clamped and fixed on the pallet fixture through the pressure plate; A tooling pallet, fixedly arranged on the bottom surface of the pallet fixture, and having a rotating shaft in the middle of the top surface; The tooling base comprises a fixing part and a fixing seat, wherein the fixing part has a rotating shaft hole in the middle, the rotating shaft is rotatably and adjustably connected to the rotating shaft hole, and the fixing part is fixedly connected to the fixing seat; The fixed vertical plate is adjustably connected to the fixing seat and is used to fix the fixing seat on the processing machine after adjusting the angle.

7. The thin-walled special-shaped parts processing tool according to claim 6 is characterized in that: The tray fixture comprises: a placement plate, a limit pin, and a first fixing hole; The top surface of the placement plate is provided with the limit pin and the first fixing hole, the limit pin is used to connect and limit with the pin hole at the bottom of the part to be processed, and the first fixing hole is used to connect with the fixing bolt passing through the part to be processed.

8. The thin-walled special-shaped parts processing tool according to claim 6, characterized in that: The top surface of the tooling pallet is provided with a first limit frame, the top surface of the fixed part is provided with a limit block, the first limit frame is engaged and fixed with the limit block, the first limit frame has four limit slots, the rotation angles between adjacent limit slots are all 90°, there are four limit blocks, and the rotation angles between adjacent limit blocks are all 90°.

9. The thin-walled special-shaped parts processing tool according to claim 7, characterized in that: The top surface of the placing plate is also provided with grooves at two ends adjacent to the pressing plate.

10. The thin-walled special-shaped parts processing tool according to claim 6, characterized in that: The tooling base also includes: an auxiliary fixing device, which is a pneumatic switch connected to the rotating shaft hole and is used to adsorb the tooling tray on the fixing part when it is turned on.

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