A positioning piece for horizontal machining of a thin-walled piece, a machining device and a machining method

Abstract

The present application relates to a kind of thin-walled piece horizontal machining positioning piece, machining device and machining method, belong to machining, solve the problem that high-efficiency machining thin-walled piece screw via hole is difficult to realize in prior art.The upper side profile surface of the positioning piece is matched with the inside profile of the thin-walled piece to be machined, the lower side of the positioning piece is a root face, when machining, the inside profile of the thin-walled piece is attached to the upper side profile surface of the positioning piece, and the lower end surface of the thin-walled piece is attached to the root face.Quick, high-precision machining thin-walled piece screw via hole is realized.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical processing, and in particular to a thin-walled workpiece horizontal processing positioning piece, a processing device and a processing method. Background Art

[0002] Certain aircraft products are usually equipped with thin-walled parts made of aluminum alloy, which are used to cover the notches on the surface of the aircraft products. After the thin-walled parts are formed into sheet metal, screw holes need to be processed at specified positions on them, and the position accuracy of the holes must be high.

[0003] Due to the relatively poor contour of thin-walled parts and the low hardness of aluminum alloy, it is impossible to determine the processing benchmark through the traditional method of aligning the plane or the center of the circle. Therefore, it is necessary to find a device that can realize the screw through hole processing of thin-walled parts. Summary of the Invention

[0004] In view of the above analysis, an embodiment of the present invention aims to provide a horizontal processing positioning part, processing device and processing method for thin-walled parts, such as sheet metal forming parts with tape wrapping, which require screw holes to be processed at specified positions on the sheet metal after being formed, so as to solve the existing problem of difficulty in achieving efficient processing of screw holes in thin-walled parts.

[0005] On the one hand, an embodiment of the present invention provides a positioning member for horizontal processing of thin-walled parts, wherein the upper outer surface of the positioning member matches the inner outer surface of the thin-walled part to be processed, and the lower side of the positioning member is a root cleaning plane. During processing, the inner outer surface of the thin-walled part is attached to the upper outer surface of the positioning member, and the lower end surface of the thin-walled part is attached to the root cleaning plane.

[0006] Furthermore, the root cleaning plane is a horizontal plane, and when the lower end surface of the thin-walled part is attached to the root cleaning plane, the outer surface of the thin-walled part is perpendicular to the root cleaning plane.

[0007] Furthermore, a positioning circular cavity is provided inside the positioning member, and the upper and lower ends of the positioning circular cavity are open.

[0008] Furthermore, a positioning plane is provided on the top of the positioning member, and the positioning plane is a horizontal plane.

[0009] Furthermore, a plurality of holes are provided on the upper outer surface of the positioning member. When the inner surface of the thin-walled member to be processed is attached to the upper outer surface of the positioning member, the plurality of holes correspond one-to-one to the positions of the screw through holes to be processed on the thin-walled member.

[0010] Furthermore, the upper side of the positioning member is an arc-shaped bending structure, the outer surface of the bending structure matches the inner surface of the thin-walled member, and when the lower end face of the thin-walled member is attached to the root cleaning plane, the outer surface of the thin-walled member is perpendicular to the root cleaning plane.

[0011] Furthermore, the upper side of the positioning member is a double-arc cylindrical structure, and the double-arc surfaces enclose the upper outer surface of the positioning member;

[0012] Each of the arc surfaces matches the inner surface of the thin-walled part, and when the lower end surface of the thin-walled part is attached to the root cleaning plane, the outer surface of the thin-walled part is perpendicular to the root cleaning plane.

[0013] Furthermore, the upper end of the positioning member is a multi-arc cylindrical structure, and the multiple arc surfaces enclose the upper outer surface of the positioning member;

[0014] Each of the arc surfaces matches the inner surface of the thin-walled part, and when the lower end surface of the thin-walled part is attached to the root cleaning plane, the outer surface of the thin-walled part is perpendicular to the root cleaning plane.

[0015] On the other hand, an embodiment of the present invention provides a horizontal processing device for thin-walled parts, comprising the above-mentioned positioning parts and fixing parts, at least three of the fixing parts are pressed tightly against the outer surface of the same thin-walled part.

[0016] On the other hand, an embodiment of the present invention provides a method for horizontally processing thin-walled parts, comprising processing screw through holes of thin-walled parts using the above-mentioned horizontal processing device for thin-walled parts.

[0017] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0018] 1. The present invention fits the inner surface of the thin-walled part on the upper outer surface of the positioning part. At this time, the outer surface of the thin-walled part is perpendicular to the root cleaning plane, and a positioning circular cavity is turned in the middle of the positioning part. In this way, the positioning reference of the outer surface of the thin-walled part is transferred to the side wall of the positioning circular cavity, which is convenient for aligning the outer surface of the thin-walled part; the lower end surface of the thin-walled part is fit on the root cleaning plane, and a positioning plane is milled on the top of the positioning part. In this way, the positioning reference of the bottom of the thin-walled part is transferred to the positioning plane, which is convenient for aligning the bottom surface of the thin-walled part. In this way, the thin-walled part can be quickly positioned, and the fast and high-precision processing of the screw holes of the thin-walled part is realized.

[0019] 2. The positioning member of the present invention can realize positioning of more than two thin-walled parts at the same time, avoiding frequent disassembly and assembly, and improving processing efficiency.

[0020] 3. The present invention provides a plurality of holes on the upper outer surface of the positioning part, and fits the inner surface of the thin-walled part onto the upper outer surface of the positioning part, and the lower end surface of the thin-walled part onto the root cleaning plane. At this time, the plurality of holes correspond one-to-one to the positions of the screw through holes to be processed on the thin-walled part. When drilling holes in the thin-walled part, the drill bit will penetrate the thin-walled part and drill into the positioning part. At this time, the holes on the upper outer surface of the positioning part avoid the drill bit to prevent the drill bit from swinging.

[0021] 4. The upper outer surface of the positioning part matches the inner outer surface of the thin-walled part, and the universal support head is used to press the inner outer surface of the thin-walled part tightly against the upper outer surface of the positioning part. After the processing is completed, the shape of the thin-walled part will not be affected; and when processing multiple batches of thin-walled parts, the thin-walled parts can be replaced by simply turning the nut. After the new thin-walled part to be processed is placed on the positioning part and fixed, it can be processed directly, which simplifies and omits the repeated operation of alignment each time a new thin-walled part is processed. The operation is convenient and the processing efficiency is improved.

[0022] In the present invention, the above-mentioned technical solutions can be combined with each other to achieve more preferred combinations. Other features and advantages of the present invention will be described in the following description, and some advantages will become apparent from the description or be learned through practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the contents particularly pointed out in the description and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings are only used for the purpose of illustrating specific embodiments and are not to be considered as limiting the present invention. Throughout the drawings, the same reference symbols denote the same components.

[0024] Figure 1 Schematic diagram of the three-dimensional structure of the thin-walled part in the present invention;

[0025] Figure 2 Schematic diagram of the bending structure in which the upper side of the positioning member of the present invention is arc-shaped;

[0026] Figure 3 This is a schematic diagram of a double-arc cylindrical structure on the upper side of the positioning member in the present invention;

[0027] Figure 4 for Figure 3 A schematic diagram of a main view of a positioning member in FIG.

[0028] Figure 5 for Figure 4 Schematic diagram of the cross section at AA;

[0029] Figure 6 This is a schematic diagram of a three-arc cylindrical structure on the upper side of the positioning member in the present invention;

[0030] Figure 7 This is a schematic diagram of a four-arc cylindrical structure in which the upper side of the positioning member in the present invention is formed;

[0031] Figure 8 It is a schematic diagram of a partial cross-sectional structure of the fixing member, the positioning member and the thin-walled member in the present invention;

[0032] Figure 9 It is a partial cross-sectional structural diagram of the transmission plate and the positioning bolt in the present invention;

[0033] Figure 10 It is a partial cross-sectional structural diagram of the positioning member and the rotary table in the present invention;

[0034] Figure 11 This is a schematic diagram of the three-dimensional structure of the fixing member, the positioning member, and the thin-walled member in the present invention;

[0035] Figure 12 Schematic diagram of the three reference plane structures for constructing a coordinate system on the positioning member in the present invention.

[0036] Reference numerals:

[0037] 1-thin-walled part; 101-screw hole; 2-positioning part; 201-upper side profile surface; 202-root cleaning plane; 203-positioning circular cavity; 204-positioning plane; 205-hole; 3-fixing part; 301-transmission plate; 302-connecting part; 303-universal support head; 304-positioning bolt; 305-nut; 306-slot; 307-protrusion; 4-rotary worktable; 401-T-slot; 5-T-nut; 6-screw; 7-pressure plate; 8-fastening nut; 9-central axis of the positioning part; 10-rotation center of the positioning circular cavity. DETAILED DESCRIPTION

[0038] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, and are not used to limit the scope of the present invention.

[0039] The size of thin-walled parts used in certain aviation products is relatively small, such as the thickness of the thin-walled parts is 2mm and the width is 33mm. Figure 1 As shown, the thin-walled part is an arc-shaped bending structure composed of multiple circular arc surfaces of different diameters and irregular curved surfaces that are tangent to each other, which is used to fit on the surface of the aircraft product to cover multiple sunken areas on the surface of the aircraft product; due to the low hardness of aluminum alloy, the contour of thin-walled parts made of aluminum alloy is relatively poor, which makes it difficult to clamp and position the thin-walled parts, affecting the processing accuracy and efficiency of the screw holes in the thin-walled parts.

[0040] To solve the above problems, the present invention provides a horizontal processing positioning member for thin-walled parts, wherein the upper outer surface 201 of the positioning member 2 matches the inner outer surface of the thin-walled part 1, and the lower side of the positioning member 2 is a root cleaning plane 202. During processing, the inner outer surface of the thin-walled part 1 is attached to the upper outer surface 201 of the positioning member 2, and the lower end face of the thin-walled part 1 is attached to the root cleaning plane 202.

[0041] Specifically, the upper contour surface 201 of the positioning member 2 is used to position the inner contour surface of the thin-walled part 1. The inner contour surface of the thin-walled part 1 is affixed to the upper contour surface 201 of the positioning member 2. At this time, the outer contour surface of the thin-walled part 1 is perpendicular to the root cleaning plane 202. In this way, the thin-walled part 1 is positioned in the horizontal direction, thereby ensuring that the screw hole 101 machined in the thin-walled part 1 is perpendicular to the outer contour surface of the thin-walled part 1. Among them, the root cleaning plane 202 of the positioning member 2 is a horizontal plane. During processing, the lower end surface of the thin-walled part 1 is affixed to the root cleaning plane 202 to position the thin-walled part 1 in the vertical direction.

[0042] Among them, a positioning circular cavity 203 is provided in the positioning part 2, and the upper and lower ends of the positioning circular cavity 203 are open, so as to transfer the positioning reference of the outer surface of the thin-walled part 1 to the side wall of the positioning circular cavity 203, thereby facilitating the alignment of the outer surface of the thin-walled part 1.

[0043] A positioning plane 204 is provided on the top of the positioning member 2 , and the positioning plane 204 is a horizontal plane, so as to transfer the positioning reference of the bottom of the thin-walled member 1 to the positioning plane 204 , thereby facilitating alignment of the bottom surface of the thin-walled member 1 .

[0044] Among them, a plurality of holes 205 are opened on the upper outer surface of the positioning member 2, and the inner outer surface of the thin-walled member 1 is fitted on the upper outer surface 201 of the positioning member 2, and the lower end surface of the thin-walled member 1 is fitted on the root cleaning plane 202. At this time, the plurality of holes correspond one-to-one with the positions of the screw holes to be processed in the thin-walled member. After processing is completed, the plurality of holes 205 correspond one-to-one with the screw holes 101 of the thin-walled member 1, and the aperture size of each hole 205 is larger than the aperture size of the screw holes 101 of the thin-walled member 1. For example, the diameter of the screw holes 101 of the thin-walled member 1 is 5 mm, and the diameter of the hole on the upper outer surface 201 of the positioning member 2 is 6 mm and the depth is 10 mm. When drilling a hole in the thin-walled member 1, the drill bit will penetrate the thin-walled member 1 and drill into the positioning member 2. At this time, the holes 205 on the upper outer surface 201 of the positioning member 2 avoid the drill bit to prevent the drill bit from swinging.

[0045] Among them, the thin-walled part 1 is an arc-shaped bending structure composed of multiple circular arc surfaces and irregular curved surfaces of different diameters, and the upper outer surface 201 of the positioning part 2 matches the inner surface of the thin-walled part 1. That is, an arc-shaped bending surface adapted to the thin-walled part 1 is provided on the upper outer surface 201 of the positioning part 2, and the multiple circular arc surfaces and irregular curved surfaces of different diameters of the thin-walled part 1 are correspondingly fitted on the arc-shaped bending surface of the upper outer surface 201 to realize the position alignment of the thin-walled part 1 on the upper outer surface 201 of the positioning part 2.

[0046] In one possible implementation, Figure 2As shown, the upper side of the positioning member 2 is an arc-shaped bending structure, and the outer surface of the bending structure matches the inner surface of the thin-walled member 1. The inner surface of the thin-walled member 1 is attached to the upper outer surface of the positioning member 2. At this time, the outer surface of the thin-walled member 1 is perpendicular to the root cleaning plane 202, thereby realizing the positioning of the thin-walled member 1 in the horizontal direction.

[0047] During processing, the lower end surface of the thin-walled part 1 is attached to the root cleaning plane 202 to position the thin-walled part 1 in the vertical direction.

[0048] During processing, the positioning member 2 can simultaneously position at least one thin-walled member 1 .

[0049] In one possible implementation, Figure 3-5 As shown, the upper side of the positioning member 2 is a double-arc cylindrical structure, and the double-arc surfaces enclose the upper outer surface 201 of the positioning member 2. Each arc surface matches the inner surface of the thin-walled member 1, and the inner surface of the thin-walled member 1 is attached to the upper outer surface 201 of the positioning member 2. At this time, the outer surface of the thin-walled member 1 is perpendicular to the root cleaning plane 202, thereby realizing the positioning of the thin-walled member 1 in the horizontal direction.

[0050] During processing, the lower end surface of the thin-walled part 1 is attached to the root cleaning plane 202 to position the thin-walled part 1 in the vertical direction.

[0051] The positioning member 2 can position at least two thin-walled members 1 at the same time.

[0052] In one possible implementation, Figure 6-7 As shown, the upper side of the positioning member 2 is a multi-arc cylindrical structure, and multiple arc surfaces enclose the upper outer surface 201 of the positioning member 2. Each arc surface matches the inner surface of the thin-walled member 1, and the inner surface of the thin-walled member 1 is attached to the upper arc surface of the positioning member 2. At this time, the outer surface of the thin-walled member 1 is perpendicular to the root cleaning plane 202, thereby realizing the positioning of the thin-walled member 1 in the horizontal direction.

[0053] During processing, the lower end surface of the thin-walled part 1 is attached to the root cleaning plane 202 to position the thin-walled part 1 in the vertical direction.

[0054] The positioning member 2 can position at least three thin-walled members 1 at the same time.

[0055] For example, Figure 6As shown, three arc-shaped surfaces are provided on the upper side of the positioning member 2, and the three arc-shaped surfaces enclose the upper outer surface 201 of the positioning member 2. The middle part of the three arc-shaped surfaces is a positioning circular cavity 203. During processing, the inner surfaces of the three thin-walled parts 1 are respectively attached to the three arc-shaped surfaces, and the bottoms of the three thin-walled parts 1 are attached to the root cleaning plane 202. At this time, the outer surfaces of the three thin-walled parts 1 are respectively perpendicular to the root cleaning plane 202, so as to achieve simultaneous positioning of the three thin-walled parts 1.

[0056] Compared to the prior art, the present invention fits the inner surface of the thin-walled part 1 onto the upper outer surface 201 of the positioning part 2. At this point, the outer surface of the thin-walled part 1 is perpendicular to the root-clearing plane 202. A positioning circular cavity is machined in the middle of the positioning part. This transfers the positioning reference of the outer surface of the thin-walled part to the side wall of the positioning circular cavity 203, facilitating alignment of the outer surface of the thin-walled part 1. The lower end face of the thin-walled part 1 fits onto the root-clearing plane 202, and a positioning plane 204 is milled on the top of the positioning part 2. This transfers the positioning reference of the bottom of the thin-walled part 1 to the positioning plane 204, facilitating alignment of the bottom surface of the thin-walled part 1. This allows for high-precision machining of the screw holes 101 of the thin-walled part 1.

[0057] Specifically, the height dimension of the upper outer surface of the positioning member 2 is greater than the width of the thin-walled member 1. For example, the height dimension of the upper outer surface 201 of the positioning member 2 is 34-40 mm; the width of the root cleaning plane 202 is greater than the thickness of the thin-walled member 1. For example, the width of the root cleaning plane 202 is 2-3 mm, so as to adapt to the thin-walled member 1 and facilitate the installation of the thin-walled member 1.

[0058] The thin-walled part 1 is an arc-shaped structure of 1 / 4 circle, and the diameter of the circle is 530-533 mm. Based on this, the size of the upper outer surface 201 of the positioning part 2 is set accordingly to be able to adapt to the inner surface size of the thin-walled part 1.

[0059] Specifically, the diameter of the positioning circular cavity 203 should provide enough space to facilitate alignment of the rotation center of the positioning member 2. For example, the diameter of the positioning circular cavity 203 is 240-260 mm.

[0060] In order to ensure the stability of the thin-walled part 1 on the positioning part 2, the present invention also provides a horizontal processing device for thin-walled parts, including the above-mentioned positioning part 2 and fixing part 3, wherein at least three fixing parts 3 are pressed against the outer surface of the same thin-walled part 1 to press the inner surface of the thin-walled part 1 against the upper outer surface 201 of the positioning part 2.

[0061] Specifically, a plurality of fixing members 3 are installed on the side of the positioning member 2, such as Figure 8-9 As shown, the fixing member 3 includes a universal support head assembly for extruding the outer surface of the thin-walled member 1 and a control member for controlling the movement of the universal support head assembly toward the outer surface of the thin-walled member 1 .

[0062] Among them, the universal support head assembly includes a transmission plate 301, a connecting member 302 with one end screwed into the transmission plate 301, and a universal support head 303 rotatably arranged in the connecting member 302; wherein, the end face of the universal support head 303 is a spherical surface, and a plane is milled at the end of the spherical surface, and the plane faces the outer surface of the thin-walled part 1; thereby, the transmission plate 301 drives the connecting member 302 and the universal support head 303 to move toward the outer end face of the thin-walled part 1, and when the end of the universal support head 303 contacts the outer surface of the thin-walled part 1, the universal support head 303 rotates in the connecting member 302, and the plane of the end of the universal support head 303 is automatically leveled, so that the plane is extruded on the outer surface of the thin-walled part 1, thereby realizing the extrusion limitation of the thin-walled part 1.

[0063] Exemplarily, the universal support head 303 is a spherical structure, with at least 5 / 9 of the sphere at one end being nested in the connector 302 and being able to rotate freely.

[0064] Among them, the control part includes a positioning bolt 304 with one end screwed to the lower end of the positioning part 2 and a nut 305 screwed on the positioning bolt 304; wherein, one end of the above-mentioned transmission plate 301 is sleeved on the positioning bolt 304, and along the axial direction of the positioning bolt 304, the transmission plate 301 and the positioning bolt 304 are slidingly connected, and the transmission plate 304 is located between the nut 305 and the side of the positioning part 2, so that the nut 305 is rotated to move toward the side of the positioning part 2, and the side of the nut 305 is pressed against the transmission plate 301 and drives the transmission plate 301 to move toward the side of the positioning part 2, thereby realizing the extrusion of the universal support head 303 onto the outer surface of the thin-walled part 1.

[0065] Furthermore, a slot 306 is provided on the side of the positioning bolt 304, and the slot 306 is distributed axially along the positioning bolt 304. A protrusion 307 is provided on the surface where the transmission plate 301 and the positioning bolt 304 meet. The protrusion 307 is adapted to the slot 306 and inserted into the slot 306. When the transmission plate 301 moves, the protrusion 307 slides in the slot 306, limiting the transmission plate 301 in a direction perpendicular to the axial surface of the positioning bolt 304 to prevent it from shaking.

[0066] Exemplarily, two slots 306 are provided on the positioning bolt 304 , and the two slots 306 are symmetrically distributed on the two sides of the positioning bolt 304 . Two protrusions 307 are provided on the transmission plate 301 . When the transmission plate 301 is sleeved on the positioning bolt 304 , the two protrusions 307 are respectively inserted into the two slots 306 .

[0067] In addition, the present invention also provides a horizontal processing method for thin-walled parts, which includes processing the screw through holes of the thin-walled parts using the above-mentioned processing device, and specifically includes the following steps:

[0068] Step 1: Fix the positioning member 2 on the horizontal processing device and align the positioning member 2;

[0069] Step 2: Place the thin-walled part 1 on the root-clearing plane 202 of the positioning part 2, and adjust the position of the thin-walled part 1 so that the inner surface of the thin-walled part 1 is completely in contact with the upper outer surface of the positioning part 2;

[0070] Step 3: Screw in the nut 305 along the axis of the positioning bolt 304 so that the flat surface of the end of the universal support head 303 is pressed against the outer surface of the thin-walled part 1;

[0071] Step 4: Use a drill bit to process the screw through hole 101 of the thin-walled part 1.

[0072] Among them, in step 1, if Figure 10 As shown, the horizontal processing device includes a rotary table 4 with a T-slot 401 provided thereon. A T-nut 5 is provided within the T-slot 401. A screw 6 is threadedly connected to the T-nut 5. A pressure plate 7 is mounted on the screw 6. A positioning member is placed between the pressure plate 7 and the rotary table 4. A tightening nut 8 is screwed onto the upper end of the screw 6 to force the pressure plate 7 against the top of the positioning member 2, thereby securing the positioning member 2. The rotation center 10 of the positioning cavity coincides with the rotation center of the rotary table 4.

[0073] Specifically, step 1 includes:

[0074] S11: placing the positioning member 2 on the rotary table 4 and aligning the positioning member 2 using the inner side wall of the positioning circular cavity 203 as an alignment reference surface;

[0075] Specifically, place the positioning member 2 roughly at the center of the rotary table 4, bring the dial indicator needle into contact with the inner wall of the positioning circular cavity 203 of the positioning member 2, rotate the rotary table 4, and read the dial indicator readings when the rotary table 4 rotates 0° and 108°, and fine-tune the positioning member 2 according to the readings until the readings at the two positions are the same, both being the arithmetic mean of the initial values. Finally, adjust the positions of 90° and 270° in the same way. When the readings of the two groups of positions 0-180 and 90-270 measured using the dial indicator are consistent, the rotation center 10 of the positioning circular cavity coincides with the rotation center of the rotary table 4, and the process of dialing and aligning is completed.

[0076] S12: Fix the positioning member 2 on the rotary table 4;

[0077] Specifically, after the rotation center of the positioning member 2 coincides with the center of the rotary table 4 , the positioning member 2 is pressed by the pressing plate 7 so that the positioning member 2 is fixed on the rotary table 4 .

[0078] S13: Aligning the positioning member 2 using the positioning plane 204 on the top of the positioning member 2 as an alignment reference plane.

[0079] Specifically, bring the pointer of the dial indicator into contact with one end of the positioning plane 204 and read the value, move the dial indicator in the horizontal direction so that the dial indicator moves in a straight line to the other end of the positioning plane 204, and read the value again; finally, rotate the rotary table 4, adjust the angle of the rotary table 4 to adjust the dial indicator value to the arithmetic mean of the readings on both sides; repeat the above operation many times until the readings of the dial indicator at both ends of the positioning plane are the same. At this time, the surface of the rotary table 4 is a horizontal plane, and the dial alignment process is completed.

[0080] Among them, in step 2, the position of the thin-walled part 1 is adjusted so that the inner surface of the thin-walled part 1 fits on the upper outer surface 201 of the positioning part 2. At this time, the position to be processed of the screw through hole 101 of the thin-walled part 1 corresponds one-to-one to the multiple holes 205 on the upper outer surface 201 of the positioning part 2.

[0081] In step 4, after the screw through holes 101 of the thin-walled component 1 are processed, the screw through holes 101 of the thin-walled component 1 correspond one-to-one to the multiple holes 205 on the upper outer surface 201 of the positioning component 2.

[0082] Compared with the prior art, the present invention fits the inner surface of the thin-walled part 1 on the upper outer surface 201 of the positioning part 2. At this time, the outer surface of the thin-walled part 1 is perpendicular to the root cleaning plane 202, and a positioning circular cavity 203 is machined in the middle of the positioning part 2. In this way, the positioning reference of the outer surface of the thin-walled part 1 is transferred to the side wall of the positioning circular cavity 203, which is convenient for aligning the outer surface of the thin-walled part 1; the lower end face of the thin-walled part 1 is fit on the root cleaning plane 202, and a positioning plane 204 is milled on the top of the positioning part 2. In this way, the positioning reference of the bottom of the thin-walled part 1 is transferred to the positioning plane 204, which is convenient for aligning the bottom surface of the thin-walled part 1. In this way, the thin-walled part 1 can be quickly positioned, and the fast and high-precision processing of the thin-walled part screw through hole 101 is realized.

[0083] The positioning member of the present invention can realize positioning of two or more thin-walled members 1 at the same time, thus avoiding frequent assembly and disassembly and improving processing efficiency.

[0084] The present invention provides a plurality of holes 205 on the upper outer surface 201 of the positioning member 2, and fits the inner surface of the thin-walled member 1 onto the upper outer surface 201 of the positioning member 2, and the lower end surface of the thin-walled member 1 onto the root cleaning plane 202. At this time, the plurality of holes 205 correspond one-to-one to the positions of the screw through holes 101 to be processed in the thin-walled member 1. When drilling the thin-walled member 1, the drill bit will penetrate the thin-walled member 1 and drill onto the positioning member 2. At this time, the holes 205 on the upper outer surface 201 of the positioning member 2 avoid the drill bit to prevent the drill bit from swinging.

[0085] The upper outer surface 201 of the positioning part 2 matches the inner outer surface of the thin-walled part 1, and the universal support head 303 is used to press the inner outer surface of the thin-walled part 1 tightly against the upper outer surface 201 of the positioning part 2. After the processing is completed, the shape of the thin-walled part 1 will not be affected; and when processing multiple batches of thin-walled parts 1, the thin-walled part 1 can be replaced by simply turning the nut 305. After the new thin-walled part 1 to be processed is placed on the positioning part 2 and fixed, it can be processed directly, which simplifies and omits the repeated operation of alignment each time a new thin-walled part 1 is processed. The operation is convenient and the processing efficiency is improved.

[0086] Example 1

[0087] A positioning member for horizontal processing of thin-walled parts, wherein the upper side of the positioning member 2 is an arc-shaped bending structure, the outer side surface of the bending structure matches the inner side surface of the thin-walled part 1, and the lower side of the positioning member 2 is a root cleaning plane 202. During processing, the inner side surface of a thin-walled part 1 is attached to the upper side outer surface 201 of the positioning member 2, and the lower end face of the thin-walled part 1 is attached to the root cleaning plane 202. At this time, the outer side surface of the thin-walled part 1 is perpendicular to the root cleaning plane 202.

[0088] Among them, a positioning circular cavity 203 is provided in the positioning part 2, and the upper and lower ends of the positioning circular cavity 203 are open, so as to transfer the positioning reference of the outer surface of the thin-walled part 1 to the side wall of the positioning circular cavity 203, thereby facilitating the alignment of the outer surface of the thin-walled part 1.

[0089] A positioning plane 204 is provided on the top of the positioning member 2 , and the positioning plane 204 is a horizontal plane, so as to transfer the positioning reference of the bottom of the thin-walled member 1 to the positioning plane 204 , thereby facilitating alignment of the bottom surface of the thin-walled member 1 .

[0090] Among them, a plurality of holes 205 are opened on the upper outer surface 201 of the positioning member 2, and the inner outer surface of the thin-walled member 1 is affixed to the upper outer surface 201 of the positioning member 2, and the lower end surface of the thin-walled member 1 is affixed to the root cleaning plane 202. At this time, the plurality of holes 205 correspond one-to-one with the positions of the screw holes 101 to be processed in the thin-walled member 1. After processing is completed, the plurality of holes 205 correspond one-to-one with the screw holes 101 of the thin-walled member 1, and the aperture size of each hole 205 is larger than the aperture size of the screw holes 101 of the thin-walled member 1. For example, the diameter of the screw holes 101 of the thin-walled member 1 is 5mm, and the diameter of the holes 205 on the upper outer surface 201 of the positioning member 2 is 6mm, and the depth is 10mm. Thus, when drilling a hole in the thin-walled part 1 , the drill bit will penetrate the thin-walled part 1 and drill into the positioning part 2 . At this time, the hole 205 on the upper outer surface 201 of the positioning part 2 will avoid the drill bit and prevent the drill bit from swinging.

[0091] Specifically, the height of the upper outer surface 201 of the positioning member 2 is 34 mm; the width of the root-clearing plane 202 is 3 mm, so as to adapt to the thin-walled member 1 and facilitate the installation of the thin-walled member 1.

[0092] The thin-walled part 1 is an arc-shaped structure of 1 / 4 circle, and the diameter of the circle is 532 mm. Based on this, the size of the upper outer surface 201 of the positioning part 2 is set accordingly to be able to adapt to the inner surface size of the thin-walled part 1.

[0093] Specifically, the diameter of the positioning circular cavity 203 is 250 mm.

[0094] A thin-walled workpiece horizontal processing device, comprising the positioning member 2 and a plurality of fixing members 3, wherein the plurality of fixing members 3 are mounted on the side of the positioning member 2;

[0095] The fixing member 3 includes a universal support head assembly for extruding the outer surface of the thin-walled member 1 and a control member for controlling the movement of the universal support head assembly toward the outer surface of the thin-walled member 1 .

[0096] Among them, the universal support head assembly includes a transmission plate 301, a connecting member 302 with one end screwed into the transmission plate 301, and a universal support head 303 rotatably arranged in the connecting member 302; wherein, the end face of the universal support head 303 is a spherical surface, and a plane is milled at the end of the spherical surface, and the plane faces the outer surface of the thin-walled part 1; thereby, the transmission plate 301 drives the connecting member 302 and the universal support head 303 to move toward the outer end face of the thin-walled part 1, and when the end of the universal support head 303 contacts the outer surface of the thin-walled part 1, the universal support head 303 rotates in the connecting member 302, and the plane of the end of the universal support head 303 is automatically leveled, so that the plane is extruded on the outer surface of the thin-walled part 1, thereby realizing the extrusion limitation of the thin-walled part 1.

[0097] The universal support head 303 is a spherical structure, with at least 5 / 9 of the sphere at one end being nested in the connector 302 and being able to rotate freely.

[0098] Among them, the control part includes a positioning bolt 304 with one end screwed to the lower end of the positioning part 2 and a nut 305 screwed on the positioning bolt 304; wherein, one end of the above-mentioned transmission plate 301 is sleeved on the positioning bolt 304, and along the axial direction of the positioning bolt 304, the transmission plate 301 and the positioning bolt 304 are slidingly connected, and the transmission plate 301 is located between the nut 305 and the side of the positioning part 2, so that the nut 305 is rotated to move toward the side of the positioning part 2, and the side of the nut 305 is pressed against the transmission plate 301 and drives the transmission plate 301 to move toward the side of the positioning part 2, thereby realizing the extrusion of the universal support head 303 onto the outer surface of the thin-walled part 1.

[0099] Among them, two notches 306 are provided on the side of the positioning bolt 304, and the two notches 306 are distributed along the axial direction of the positioning bolt 304. Two protrusions 307 are provided on the surface where the transmission plate 301 and the positioning bolt 304 are connected. The two protrusions 307 are respectively adapted to the two notches 306 and inserted into the two notches 306 respectively. When the transmission plate 301 moves, the protrusions 307 slide in the notches 306, and limit the transmission plate 301 in the direction perpendicular to the axial surface of the positioning bolt 304 to prevent it from shaking.

[0100] Example 2

[0101] The difference from Example 1 is that the upper side of the positioning member 2 is a double-arc cylindrical structure, such as Figure 11 As shown, the double arc surfaces enclose the upper outer surface 201 of the positioning member 2, and each arc surface matches the inner outer surface of the thin-walled member 1, and the inner outer surfaces of the two thin-walled members 1 are fitted on the upper outer surface 201 of the positioning member 2. At this time, the outer outer surfaces of the two thin-walled members 1 are perpendicular to the root cleaning plane 202, thereby achieving the simultaneous positioning of the two thin-walled members 1 in the horizontal direction.

[0102] During processing, the lower end surfaces of the two thin-walled parts 1 are attached to the root cleaning plane 202 to simultaneously position the two thin-walled parts 202 in the vertical direction.

[0103] Example 3

[0104] The difference from Example 1 is that: the upper side of the positioning member 2 is a three-arc cylindrical structure, and each arc surface matches the inner surface of the thin-walled member 1;

[0105] Among them, the three arc-shaped surfaces enclose the upper outer surface 201 of the positioning part 2, and the middle part of the three arc-shaped surfaces is the positioning circular cavity 203. During processing, the inner side surfaces of the three thin-walled parts 1 are respectively attached to the three arc-shaped surfaces, and the bottoms of the three thin-walled parts 1 are attached to the root cleaning plane 202. At this time, the outer side surfaces of the three thin-walled parts 1 are respectively perpendicular to the root cleaning plane 202, so as to achieve simultaneous positioning of the three thin-walled parts 1.

[0106] Example 4

[0107] The difference from Example 1 is that: the upper side of the positioning member 2 is a cylindrical structure with four arc surfaces, and each arc surface matches the inner surface of the thin-walled member 1;

[0108] Among them, the four arc-shaped surfaces enclose the upper outer surface 201 of the positioning part 2, and the middle part of the four arc-shaped surfaces is the positioning circular cavity 203. During processing, the inner side surfaces of the four thin-walled parts 1 are respectively attached to the four arc-shaped surfaces, and the bottoms of the four thin-walled parts 1 are attached to the root cleaning plane 202. At this time, the outer side surfaces of the four thin-walled parts 1 are respectively perpendicular to the root cleaning plane 202, so as to achieve simultaneous positioning of the four thin-walled parts 1.

[0109] Example 5

[0110] A horizontal processing method for thin-walled parts, comprising the following steps:

[0111] Step 1: Fix the positioning member 2 on the horizontal processing device and align the positioning member 2;

[0112] Wherein, in step 1, it includes:

[0113] S11: placing the positioning member 2 on the rotary table 4 and aligning the positioning member 2 using the inner side wall of the positioning circular cavity 203 as an alignment reference surface;

[0114] Specifically, place the positioning member 2 roughly at the center of the rotary table 4, bring the dial indicator needle into contact with the inner wall of the positioning circular cavity 203 of the positioning member 2, rotate the rotary table 4, and read the dial indicator readings when the rotary table 4 rotates 0° and 108°, and fine-tune the positioning member 2 according to the readings until the readings at the two positions are the same, both being the arithmetic mean of the initial values. Finally, adjust the positions of 90° and 270° in the same way. When the readings of the two groups of positions 0-180 and 90-270 measured using the dial indicator are consistent, the rotation center of the positioning member 2 coincides with the rotation center of the rotary table 4, and the process of dialing and aligning is completed.

[0115] S12: Fix the positioning member 2 on the rotary table 4;

[0116] Specifically, after the rotation center of the positioning member 2 coincides with the center of the rotary table 4 , the positioning member is pressed by the pressing plate 7 , so that the positioning member 2 is fixed on the rotary table 4 .

[0117] S13: Aligning the positioning member 2 using the positioning plane 204 on the top of the positioning member 2 as an alignment reference plane.

[0118] Specifically, bring the pointer of the dial indicator into contact with one end of the positioning plane 204 and read the value, move the dial indicator in the horizontal direction so that the dial indicator moves in a straight line to the other end of the positioning plane 204, and read the value again; finally, rotate the rotary table 4, adjust the angle of the rotary table 4 to adjust the dial indicator value to the arithmetic mean of the readings on both sides; repeat the above operation many times until the readings of the dial indicator at both ends of the positioning plane 204 are the same. At this time, the surface of the rotary table 4 is a horizontal plane, and the dial alignment process is completed.

[0119] Step 2: Place the thin-walled part 1 on the root-clearing plane 202 of the positioning part 2, and adjust the position of the thin-walled part 1 so that the inner surface of the thin-walled part 1 is completely in contact with the upper outer surface 201 of the positioning part 2;

[0120] Among them, the position of the thin-walled part 1 is adjusted so that the inner surface of the thin-walled part 1 fits on the upper outer surface 201 of the positioning part 2. At this time, the position to be processed of the screw through hole 101 of the thin-walled part 1 corresponds one-to-one to the multiple holes 205 on the upper outer surface 201 of the positioning part 2.

[0121] Step 3: Screw in the nut 305 along the axis of the positioning bolt 304 so that the flat surface of the end of the universal support head 303 is pressed against the outer surface of the thin-walled part 1;

[0122] Step 4: Determine the position of the screw through hole 101 of the thin-walled part to be processed, and use a drill to process the screw through hole 101 of the thin-walled part 1.

[0123] Specifically, they include:

[0124] S41: Establish a coordinate system on the positioning part to determine the coordinates of the points to be processed;

[0125] First, create three mutually perpendicular reference planes, such as Figure 12 As shown, the common intersection of the three reference planes is located in the positioning circular cavity 203, and the point is located on the central axis of the positioning circular cavity 203;

[0126] Establish a coordinate system based on three reference planes;

[0127] According to the position to be processed of the screw through hole 101 of the thin-walled part 1, the coordinates of the processing point are determined. For example, the coordinates of the intersection of the three reference planes are (0, 0, 0, 0°);

[0128] The processing position of the screw through hole 101 to be processed at the end of the thin-walled part 1 is taken as the first processing point, and the processing position of the screw through hole 101 to be processed at the other end of the thin-walled part 1 is taken as the final processing point;

[0129] S42: Based on the established coordinate system, the rotary table 4 is controlled by the machine tool to rotate, so that the drill bit moves to the processing points in sequence to process the screw through holes 101.

[0130] After the screw through holes 101 of the thin-walled component 1 are processed, the screw through holes 101 of the thin-walled component 1 correspond one-to-one to the multiple holes 205 on the upper outer surface 201 of the positioning component 2 .

[0131] Based on the processing device of Example 2, the screw through holes 101 were processed on the thin-walled parts #01-#10 using the above processing method; and the thin-walled parts #11-#15 were fixed using the existing gluing method. After the thin-walled parts were processed, the processed thin-walled parts 1 were removed and tested. The test results are shown in Table 1.

[0132] Table 1 Test results

[0133] ;

[0134] As shown in Table 1, the machining of the thin-walled component screw hole 101 does not affect the appearance of the thin-walled component 1, and the screw hole position does not shift, resulting in high machining quality. Furthermore, the assembly and disassembly time for a single thin-walled component 1 can be reduced to 115 seconds, improving overall machining efficiency. This demonstrates that the present invention enables efficient and high-precision machining of the thin-walled component screw hole 101, overcoming the difficulty of clamping and positioning the thin-walled component 1 during machining.

[0135] Those skilled in the art will appreciate that all or part of the process steps of the above-described embodiments can be implemented by instructing related hardware through a computer program, and the program can be stored in a computer-readable storage medium, such as a magnetic disk, an optical disk, a read-only memory, or a random access memory.

[0136] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with this technical field within the technical scope disclosed by the present invention should be covered by the scope of protection of the present invention.

Claims

1. A horizontal processing method for thin-walled parts, characterized by: The thin-walled parts screw holes are processed by using the thin-walled parts horizontal processing device; The thin-walled workpiece horizontal processing device includes a positioning member and a fixing member, and at least three of the fixing members are pressed tightly against the outer surface of the same thin-walled workpiece; The thin-walled part is an arc-shaped bent structure composed of a plurality of circular arc surfaces of different diameters and irregular curved surfaces that are tangent to each other; the upper outer surface of the positioning part matches the inner outer surface of the thin-walled part to be processed, and the lower side of the positioning part is a root cleaning plane. During processing, the inner outer surface of the thin-walled part is attached to the upper outer surface of the positioning part, and the lower end surface of the thin-walled part is attached to the root cleaning plane; The fixing member includes a universal support head assembly for extruding the outer surface of the thin-walled member and a control member for controlling the movement of the universal support head assembly toward the outer surface of the thin-walled member; The universal support head assembly includes a transmission plate, a connector having one end screwed into the transmission plate, and a universal support head rotatably disposed in the connector; wherein the end face of the universal support head is a spherical surface, and a flat surface is milled at the end of the spherical surface, the flat surface facing the outer surface of the thin-walled part; when the end of the universal support head contacts the outer surface of the thin-walled part, the universal support head rotates in the connector, and the flat surface of the end of the universal support head is automatically leveled; The control member includes a positioning bolt having one end threadedly connected to the lower end of the positioning member and a nut threadedly connected to the positioning bolt; wherein one end of the transmission plate is sleeved on the positioning bolt, and the transmission plate and the positioning bolt are slidably connected along the axial direction of the positioning bolt, and the transmission plate is located between the nut and the side surface of the positioning member; The processing method comprises the following steps: Step 1: Fix the positioning parts on the horizontal processing setup and align the positioning parts; Step 2: Place the thin-walled part on the root-clearing plane of the positioning part, and adjust the position of the thin-walled part so that the inner surface of the thin-walled part is completely in contact with the upper outer surface of the positioning part; Step 3: Screw in the nut along the axis of the positioning bolt so that the flat surface of the end of the universal support head is pressed against the outer surface of the thin-walled part; Step 4: Use a drill to process the screw holes of the thin-walled parts; The thin-walled workpiece horizontal processing device also includes a rotary worktable; a positioning circular cavity is provided inside the positioning member; and the rotation center of the positioning circular cavity coincides with the rotation center of the rotary worktable.

2. The horizontal processing method for thin-walled parts according to claim 1, characterized in that: The root cleaning plane is a horizontal plane. When the lower end surface of the thin-walled part is placed on the root cleaning plane, the outer surface of the thin-walled part is perpendicular to the root cleaning plane.

3. The horizontal processing method for thin-walled parts according to claim 1, characterized in that: The upper and lower ends of the positioning circular cavity are open.

4. The horizontal processing method for thin-walled parts according to claim 1, characterized in that: A positioning plane is provided on the top of the positioning piece, and the positioning plane is a horizontal plane.

5. The horizontal processing method for thin-walled parts according to claim 1, characterized in that: The upper outer surface of the positioning member is provided with a plurality of holes. When the inner surface of the thin-walled member to be processed is attached to the upper outer surface of the positioning member, the plurality of holes correspond one-to-one to the positions of the screw through holes to be processed on the thin-walled member.

6. The horizontal processing method for thin-walled parts according to claim 1, characterized in that: The upper side of the positioning member is an arc-shaped bending structure, the outer surface of the bending structure matches the inner surface of the thin-walled member, and when the lower end surface of the thin-walled member is attached to the root cleaning plane, the outer surface of the thin-walled member is perpendicular to the root cleaning plane.

7. The horizontal processing method for thin-walled parts according to claim 1, characterized in that: The upper side of the positioning member is a double-arc cylindrical structure, and the double-arc surfaces enclose the upper outer surface of the positioning member; Each of the arc surfaces matches the inner surface of the thin-walled part, and when the lower end surface of the thin-walled part is attached to the root cleaning plane, the outer surface of the thin-walled part is perpendicular to the root cleaning plane.

8. The horizontal processing method for thin-walled parts according to claim 1, characterized in that: The upper end of the positioning member is a multi-arc cylindrical structure, and the multiple arc surfaces enclose the upper outer surface of the positioning member; Each of the arc surfaces matches the inner surface of the thin-walled part, and when the lower end surface of the thin-walled part is attached to the root cleaning plane, the outer surface of the thin-walled part is perpendicular to the root cleaning plane.

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