A horizontal machining device and method for long strip irregular-shaped sheet metal parts

Abstract

The present application relates to a long strip irregular shape sheet metal piece horizontal machining device and machining method, belongs to the mechanical processing, solves the problem that the existing technology is difficult to realize efficient processing of the strap screw via. The device includes a positioning member for clamping a long strip irregular shape sheet metal piece, a rotary worktable for bearing the positioning member, and a drill bit for machining the screw via of the long strip irregular shape sheet metal piece; wherein the upper side profile surface of the positioning member matches the inner side profile surface of the strap, and the inner side profile surface of the long strip irregular shape sheet metal piece is attached to the upper side profile surface of the positioning member; during machining, the rotary worktable drives the positioning member to rotate to move the to-be-machined point of the long strip irregular shape sheet metal piece screw via to correspond to the drill bit. The strap screw via is quickly and accurately machined.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical processing, and in particular to a horizontal machining device and a machining method for a long irregularly shaped sheet metal part. Background Art

[0002] A certain aircraft product is usually equipped with a long irregular-shaped sheet metal part. The material of the long irregular-shaped sheet metal part is aluminum alloy and is used to cover the groove on the surface of the aircraft product. After the long irregular-shaped sheet metal part is formed, screw holes need to be processed at specified positions on it, and the hole positioning accuracy requirements are relatively high.

[0003] Due to the relatively poor contour accuracy of long, irregularly shaped sheet metal parts and the low hardness of aluminum alloy, it is impossible to determine the processing base through traditional methods such as aligning planes or aligning the center of a circle. Therefore, it is necessary to find a device that can realize the screw hole processing of long, irregularly shaped sheet metal parts. Summary of the Invention

[0004] In view of the above analysis, an embodiment of the present invention aims to provide a horizontal machining device and method for long strips of irregularly shaped sheet metal parts, such as wrapped sheet metal formed parts, which need to have screw holes processed at specified positions on them after the wrapped sheet metal is formed, so as to solve the existing problem of difficulty in efficiently processing wrapped screw holes.

[0005] On the one hand, an embodiment of the present invention provides a horizontal machining device for a long irregularly shaped sheet metal part, comprising a positioning member for clamping the long irregularly shaped sheet metal part, a rotary table for carrying the positioning member, and a drill bit for processing screw holes in the long irregularly shaped sheet metal part;

[0006] The upper outer surface of the positioning member matches the inner outer surface of the wrapping belt, and the inner outer surface of the long irregular sheet metal part is attached to the upper outer surface of the positioning member;

[0007] During processing, the rotary table drives the positioning part to rotate to move the processing points of the screw holes of the long irregular-shaped sheet metal parts to correspond to the drill bit.

[0008] Furthermore, the lower side of the positioning member is a root cleaning plane, and the lower end surface of the long irregular-shaped sheet metal part is attached to the root cleaning plane;

[0009] Wherein, the root cleaning plane is a horizontal plane. When the lower end surface of the long irregular-shaped sheet metal part is attached to the root cleaning plane, the outer surface of the long irregular-shaped sheet metal part is perpendicular to the root cleaning plane.

[0010] Furthermore, a positioning circular cavity is provided inside the positioning member, and the upper and lower ends of the positioning circular cavity are open.

[0011] Furthermore, the rotary workbench is provided with a T-slot, and a T-nut matched with the T-slot, and a screw is screwed into the T-nut;

[0012] Wherein, a pressing plate is sleeved on the screw rod, and the positioning piece is placed between the pressing plate and the rotary workbench to fix the positioning piece on the rotary workbench.

[0013] Furthermore, the rotation center of the positioning circular cavity coincides with the rotation center of the rotary table.

[0014] Furthermore, the drill bit is movably arranged on a machine tool along a direction perpendicular to the outer surface of the long irregular-shaped sheet metal part, so that the drill bit can be controlled by the machine tool to move toward a point to be processed of the screw through hole.

[0015] Furthermore, a positioning plane is provided on the top of the positioning member, and the positioning plane is a horizontal plane.

[0016] Furthermore, a plurality of holes are provided on the upper outer surface of the positioning member. When the inner surface of the long irregular-shaped sheet metal part is affixed to the upper outer surface of the positioning member, the plurality of holes correspond one-to-one to the positions of the screw holes to be processed on the long irregular-shaped sheet metal part.

[0017] Furthermore, it also includes fixing parts, at least three of which are pressed tightly against the outer surface of the same long irregular-shaped sheet metal part.

[0018] On the other hand, an embodiment of the present invention provides a horizontal machining method for a long irregularly shaped sheet metal part, comprising machining the screw holes of the wrapping tape using the above-mentioned machining device.

[0019] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0020] 1. The present invention fits the inner surface of the wrapping tape on the upper outer surface of the positioning piece. At this time, the outer surface of the wrapping tape is perpendicular to the root cleaning plane, and a positioning circular cavity is turned in the middle of the positioning piece. In this way, the positioning reference of the outer surface of the wrapping tape is transferred to the side wall of the positioning circular cavity, which is convenient for aligning the outer surface of the wrapping tape; the lower end surface of the wrapping tape is fit on the root cleaning plane, and a positioning plane is milled on the top of the positioning piece. In this way, the positioning reference of the bottom of the wrapping tape is transferred to the positioning plane, which is convenient for aligning the bottom surface of the wrapping tape. In this way, it is only necessary to fix the positioning piece on the rotary workbench and align it, and then place the wrapping tape on the positioning piece to achieve rapid positioning of the wrapping tape, thereby realizing rapid and high-precision processing of the wrapping tape screw holes.

[0021] 2. The positioning member of the present invention can position more than two straps at the same time, avoiding frequent disassembly and assembly, and improving processing efficiency.

[0022] 3. The present invention has multiple holes on the upper outer surface of the positioning piece, and the inner surface of the wrapping tape is fitted on the upper outer surface of the positioning piece, and the lower end surface of the wrapping tape is fitted on the root cleaning plane. At this time, the multiple holes correspond one-to-one to the positions of the screw through holes to be processed in the wrapping tape. When drilling holes in the wrapping tape, the drill bit will penetrate the wrapping tape and drill into the positioning piece. At this time, the holes on the upper outer surface of the positioning piece avoid the drill bit to prevent the drill bit from swinging.

[0023] 4. The upper outer surface of the positioning piece matches the inner outer surface of the tape, and the universal support head is used to press the inner outer surface of the tape tightly against the upper outer surface of the positioning piece. After processing, the shape of the tape will not be affected. When processing multiple batches of tapes, the tape can be replaced by simply turning the nut. The single disassembly and assembly time is shortened to 115s, thereby improving the overall processing efficiency. After the new tape to be processed is placed on the positioning piece and fixed, it can be processed directly, simplifying and omitting the repeated operation of alignment each time a new tape is processed. The operation is convenient and the processing efficiency is improved.

[0024] 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

[0025] 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.

[0026] Figure 1 Schematic diagram of the three-dimensional structure of the wrapping tape in the present invention;

[0027] Figure 2 Schematic diagram of the bending structure in which the upper side of the positioning member of the present invention is arc-shaped;

[0028] 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;

[0029] Figure 4 for Figure 3 A schematic diagram of a main view of a positioning member in FIG.

[0030] Figure 5 for Figure 4 Schematic diagram of the cross section at AA;

[0031] 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;

[0032] 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;

[0033] Figure 8 It is a schematic diagram of a partial cross-sectional structure of the fixing member, the positioning member and the wrapping belt in the present invention;

[0034] Figure 9 It is a partial cross-sectional structural diagram of the transmission plate and the positioning bolt in the present invention;

[0035] Figure 10 It is a partial cross-sectional structural diagram of the positioning member, the rotary table and the drill bit in the present invention;

[0036] Figure 11 This is a schematic diagram of the three-dimensional structure of the fixing member, the positioning member, and the wrapping belt in the present invention;

[0037] Figure 12 Schematic diagram of the three reference plane structures for constructing a coordinate system on the positioning member in the present invention.

[0038] Reference numerals:

[0039] 1-Wrapping tape; 101-Screw hole; 2-Location piece; 201-Upper profile surface; 202-Root cleaning plane; 203-Location cavity; 204-Location plane; 205-Hole; 3-Fixer; 301-Transmission plate; 302-Connector; 303-Universal support head; 304-Location bolt; 305-Nut; 306-Slot; 307-Bump; 4-Rotary table; 401-T-slot; 5-T-nut; 6-Screw; 7-Pressure plate; 8-Tightening nut; 9-Center axis of the positioning piece; 10-Drill bit; 11-Center of rotation of the positioning cavity. DETAILED DESCRIPTION

[0040] 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.

[0041] The size of the long irregular sheet metal parts used in a certain aviation product is relatively small, such as the sheet metal forming parts with a thickness of 2mm and a width of 33mm. Figure 1 As shown, the wrapping tape 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. It 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 the wrapping tape made of aluminum alloy is relatively poor, which makes the wrapping tape difficult to clamp and position, affecting the processing accuracy and efficiency of the wrapping tape screw holes.

[0042] To solve the above problems, the present invention provides a horizontal machining device for long strips of irregularly shaped sheet metal parts, comprising a positioning member 2 for clamping long strips of irregularly shaped sheet metal parts, a rotary worktable 4 for carrying the positioning member 2, and a drill bit 10 for processing screw holes 101 in long strips of irregularly shaped sheet metal parts; during processing, the rotary worktable 4 drives the positioning member 2 to rotate to move the screw hole 101 to be processed to correspond to the drill bit 10.

[0043] Among them, the upper side outer surface 201 of the positioning part 2 matches the inner side surface of the long irregular shaped sheet metal part, and the lower side of the positioning part 2 is the root cleaning plane 202. During processing, the inner side surface of the long irregular shaped sheet metal part is attached to the upper side outer surface 201 of the positioning part 2, and the lower end surface of the long irregular shaped sheet metal part is attached to the root cleaning plane 202.

[0044] Exemplarily, the long irregular-shaped sheet metal part is a banded sheet metal formed part.

[0045] Specifically, the upper outer surface 201 of the positioning member 2 is used to position the inner surface of the wrapping tape 1. The inner surface of the wrapping tape 1 is affixed to the upper outer surface 201 of the positioning member 2. At this time, the outer surface of the wrapping tape 1 is perpendicular to the root-clearing plane 202, thereby achieving horizontal positioning of the wrapping tape 1 and ensuring that the screw holes 101 machined on the wrapping tape 1 are perpendicular to the outer surface of the wrapping tape 1. Among them, the root-clearing plane 202 of the positioning member 2 is a horizontal plane. During processing, the lower end surface of the wrapping tape 1 is affixed to the root-clearing plane 202 to position the wrapping tape 1 in the vertical direction.

[0046] Among them, a positioning circular cavity 203 is provided in the positioning member 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 wrapping tape 1 to the side wall of the positioning circular cavity 203, thereby facilitating the alignment of the outer surface of the wrapping tape 1.

[0047] A positioning plane 204 is provided on the top of the positioning member 2 , and the positioning plane 204 is a horizontal plane, so that the positioning reference of the bottom of the strap 1 is transferred to the positioning plane 204 , thereby facilitating alignment of the bottom surface of the strap 1 .

[0048] Among them, a plurality of holes 205 are opened on the upper outer surface of the positioning member 2. The inner outer surface of the wrapping tape 1 is affixed to the upper outer surface 201 of the positioning member 2, and the lower end surface of the wrapping tape 1 is affixed to 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 wrapping tape. After processing is completed, the plurality of holes 205 correspond one-to-one with the screw holes 101 of the wrapping tape 1, and the aperture size of each hole 205 is larger than the aperture size of the screw holes 101 of the wrapping tape 1. For example, the diameter of the screw holes 101 of the wrapping tape 1 is 5mm, and the diameter of the holes on the upper outer surface 201 of the positioning member 2 is 6mm, and the depth is 10mm. When drilling a hole in the wrapping tape 1, the drill bit will penetrate the wrapping tape 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.

[0049] Among them, the wrapping strap 1 is an arc-shaped bending structure composed of multiple circular arc surfaces and irregular curved surfaces of different diameters that are tangent to each other. The upper outer surface 201 of the positioning member 2 matches the inner outer surface of the wrapping strap 1. That is to say, an arc-shaped bending surface that is adapted to the wrapping strap 1 is provided on the upper outer surface 201 of the positioning member 2. The multiple circular arc surfaces and irregular curved surfaces of different diameters of the wrapping strap 1 are correspondingly fitted on the arc-shaped bending surface of the upper outer surface 201 to achieve position alignment of the wrapping strap 1 on the upper outer surface 201 of the positioning member 2.

[0050] In one possible implementation, Figure 2 As 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 wrapping tape 1. The inner surface of the wrapping tape 1 is attached to the upper outer surface of the positioning member 2. At this time, the outer surface of the wrapping tape 1 is perpendicular to the root cleaning plane 202, thereby realizing the positioning of the wrapping tape 1 in the horizontal direction.

[0051] During processing, the lower end surface of the wrapping tape 1 is attached to the root cleaning plane 202 to position the wrapping tape 1 in the vertical direction.

[0052] During processing, the positioning member 2 can simultaneously position at least one strap 1 .

[0053] 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 wrapping tape 1, and the inner surface of the wrapping tape 1 is attached to the upper outer surface 201 of the positioning member 2. At this time, the outer surface of the wrapping tape 1 is perpendicular to the root cleaning plane 202, thereby realizing the positioning of the wrapping tape 1 in the horizontal direction.

[0054] During processing, the lower end surface of the wrapping tape 1 is attached to the root cleaning plane 202 to position the wrapping tape 1 in the vertical direction.

[0055] The positioning member 2 can position at least two straps 1 at the same time.

[0056] 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 wrapping tape 1, and the inner surface of the wrapping tape 1 is attached to the upper arc surface of the positioning member 2. At this time, the outer surface of the wrapping tape 1 is perpendicular to the root cleaning plane 202, thereby realizing the positioning of the wrapping tape 1 in the horizontal direction.

[0057] During processing, the lower end surface of the wrapping tape 1 is attached to the root cleaning plane 202 to position the wrapping tape 1 in the vertical direction.

[0058] The positioning member 2 can position at least three straps 1 at the same time.

[0059] For example, Figure 6 As 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 wrapping tapes 1 are respectively attached to the three arc-shaped surfaces, and the bottoms of the three wrapping tapes 1 are attached to the root cleaning plane 202. At this time, the outer surfaces of the three wrapping tapes 1 are respectively perpendicular to the root cleaning plane 202, so as to achieve simultaneous positioning of the three wrapping tapes 1.

[0060] Compared to the prior art, the present invention fits the inner surface of the wrapping tape 1 onto the upper outer surface 201 of the positioning member 2. At this point, the outer surface of the wrapping tape 1 is perpendicular to the root-clearing plane 202. A positioning circular cavity is machined in the middle of the positioning member. This transfers the positioning reference of the outer surface of the wrapping tape to the side wall of the positioning circular cavity 203, facilitating alignment of the outer surface of the wrapping tape 1. The lower end face of the wrapping tape 1 fits onto the root-clearing plane 202, and a positioning plane 204 is milled on the top of the positioning member 2. This transfers the positioning reference of the bottom of the wrapping tape 1 to the positioning plane 204, facilitating alignment of the bottom surface of the wrapping tape 1. This allows for high-precision machining of the screw holes 101 of the wrapping tape 1.

[0061] Specifically, the height dimension of the upper outer surface of the positioning member 2 is greater than the width of the wrapping tape 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 wrapping tape 1. For example, the width of the root cleaning plane 202 is 2-3 mm, so as to adapt to the wrapping tape 1 and facilitate the installation of the wrapping tape 1.

[0062] The wrapping tape 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 member 2 is set accordingly to be able to adapt to the inner surface size of the wrapping tape 1.

[0063] 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.

[0064] Furthermore, a plurality of fixing members 3 are installed on the side of the positioning member 2 to press the inner surface of the wrapping tape 1 against the upper outer surface 201 of the positioning member 2. For example, at least three fixing members 3 are pressed against the outer surface of the same wrapping tape 1.

[0065] Specifically, such as Figure 8-9 As shown, the fixing member 3 includes a universal support head assembly for squeezing the outer surface of the strap 1 and a control member for controlling the movement of the universal support head assembly toward the outer surface of the strap 1 .

[0066] Among them, the universal support head assembly includes a transmission plate 301, a connecting piece 302 with one end screwed into the transmission plate 301, and a universal support head 303 rotatably arranged in the connecting piece 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 wrapping tape 1; thereby, the transmission plate 301 drives the connecting piece 302 and the universal support head 303 to move toward the outer end face of the wrapping tape 1, and when the end of the universal support head 303 contacts the outer surface of the wrapping tape 1, the universal support head 303 rotates in the connecting piece 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 wrapping tape 1, thereby realizing the extrusion limitation of the wrapping tape 1.

[0067] 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.

[0068] The control part includes a positioning bolt 304 having one end screwed to the lower end of the positioning part 2 and a nut 305 screwed to 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 wrapping tape 1.

[0069] 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.

[0070] Exemplarily, two notches 306 are provided on the positioning bolt 304 , and the two notches 306 are symmetrically distributed on both 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 notches 306 .

[0071] Specifically, such as Figure 10 As shown, the rotary worktable 4 is provided with a T-slot 401, a T-nut 5 is provided in the T-slot 401, a screw 6 is threaded in the T-nut 5, a pressure plate 7 is sleeved on the screw 6, the positioning part is placed between the pressure plate 7 and the rotary worktable 4, and the fastening nut 8 is screwed on the upper end of the screw 6 so that the pressure plate 7 squeezes the top of the positioning part 2 to fix the positioning part 2 and ensure the stability of the positioning part 2 during processing.

[0072] The rotation center 11 of the positioning circular cavity coincides with the rotation center of the rotary table 4, so as to facilitate determination of the distance between the drill bit 10 and the point to be processed, and further facilitate determination of the moving distance parameter of the drill bit 10, which facilitates processing.

[0073] The surface of the rotary table 4 is parallel to the positioning plane, and the positioning plane 204 is horizontally distributed to facilitate alignment of the positioning member 2 .

[0074] Specifically, the drill bit 10 is movably provided on a machine tool along a direction perpendicular to the outer surface of the wrapping tape 1 , so that the drill bit 10 is controlled by the machine tool to move toward a processing point to process the screw through hole 101 .

[0075] In addition, the present invention also provides a horizontal machining method for long irregularly shaped sheet metal parts, which comprises using the above-mentioned machining device to machine screw through holes in the long irregularly shaped sheet metal parts.

[0076] Specifically, they include:

[0077] Step 1: Fix the positioning member 2 on the horizontal processing equipment and align the positioning member 2;

[0078] Step 2: Place the wrapping tape 1 on the root-clearing plane 202 of the positioning member 2, and adjust the position of the wrapping tape 1 so that the inner surface of the wrapping tape 1 is completely in contact with the upper outer surface of the positioning member 2;

[0079] 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 wrapping tape 1;

[0080] Step 4: Use the drill bit 10 to process the screw holes 101 of the wrapping tape 1 .

[0081] Wherein, step 1 includes:

[0082] 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;

[0083] 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 11 of the positioning member 2 coincides with the rotation center of the rotary table 4, and the process of dialing and aligning is completed.

[0084] S12: Fix the positioning member 2 on the rotary table 4;

[0085] 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 .

[0086] S13: Aligning the positioning member 2 using the positioning plane 204 on the top of the positioning member 2 as an alignment reference plane.

[0087] 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.

[0088] Among them, in step 2, the position of the wrapping tape 1 is adjusted so that the inner surface of the wrapping tape 1 fits on the upper outer surface 201 of the positioning member 2. At this time, the processing points of the screw through holes 101 correspond one-to-one to the multiple holes 205 on the upper outer surface 201 of the positioning member 2.

[0089] Wherein, in step 4, it includes:

[0090] S41: Establish a coordinate system on the positioning part to determine the coordinates of the points to be processed;

[0091] 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;

[0092] Establish a coordinate system based on three reference planes;

[0093] According to the position to be processed of the screw through hole 101 of the strap 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°);

[0094] The processing position of the screw hole 101 to be processed at the end of the wrapping tape 1 is the first processing point, and the processing position of the screw hole 101 to be processed at the other end of the wrapping tape 1 is the final processing point;

[0095] S42: Based on the established coordinate system, the rotary table 4 is controlled by the machine tool to rotate, so that the drill bit 10 is moved to the points to be processed in sequence, and the screw through holes 101 are processed.

[0096] After the screw holes 101 of the wrapping tape 1 are processed, the screw holes 101 of the wrapping tape 1 correspond one-to-one with the plurality of holes 205 on the upper outer surface 201 of the positioning member 2 .

[0097] Compared with the prior art, the present invention fits the inner side surface of the wrapping tape 1 on the upper outer side surface 201 of the positioning member 2. At this time, the outer side surface of the wrapping tape 1 is perpendicular to the root cleaning plane 202, and a positioning circular cavity 203 is machined in the middle of the positioning member 2, thereby transferring the positioning reference of the outer side surface of the wrapping tape 1 to the side wall of the positioning circular cavity 203, which is convenient for aligning the outer side surface of the wrapping tape 1; the lower end surface of the wrapping tape 1 is fit on the root cleaning plane 202, and a positioning plane 204 is milled on the top of the positioning member 2, thereby transferring the positioning reference of the bottom of the wrapping tape 1 to the positioning plane 204, which is convenient for aligning the bottom surface of the wrapping tape 1. Therefore, it is only necessary to fix the positioning member 2 on the rotary workbench 4 and align it, and then place the wrapping tape 1 on the positioning member 2, so as to realize rapid positioning of the wrapping tape 1, and realize rapid and high-precision processing of the wrapping tape screw through hole 101.

[0098] The positioning piece of the present invention can realize positioning of more than two straps 1 at the same time, thus avoiding frequent assembly and disassembly and improving processing efficiency.

[0099] The present invention has multiple holes 205 on the upper outer surface 201 of the positioning member 2, and the inner surface of the wrapping tape 1 is affixed to the upper outer surface 201 of the positioning member 2, and the lower end surface of the wrapping tape 1 is affixed to the root cleaning plane 202. At this time, the multiple holes 205 correspond one-to-one to the positions of the screw through holes 101 to be processed in the wrapping tape 1. When drilling the wrapping tape 1, the drill bit will penetrate the wrapping tape 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.

[0100] The upper outer surface 201 of the positioning member 2 matches the inner outer surface of the wrapping tape 1, and the universal support head 303 is used to press the inner outer surface of the wrapping tape 1 tightly against the upper outer surface 201 of the positioning member 2. After the processing is completed, the shape of the wrapping tape 1 will not be affected; and when processing multiple batches of wrapping tapes 1, the wrapping tape 1 can be replaced by simply turning the nut 305, and the single disassembly and assembly time is shortened to 115s, thereby improving the overall processing efficiency; after the new wrapping tape 1 to be processed is placed on the positioning member 2 and fixed, it can be processed directly, which simplifies and omits the repeated operation of alignment each time a new wrapping tape 1 is processed, making the operation convenient and improving the processing efficiency.

[0101] Example 1

[0102] A horizontal machining device for tape-wrapped sheet metal forming parts includes a positioning member 2 for clamping a tape 1, a rotary worktable 4 for supporting the positioning member 2, and a drill bit 10 for machining a tape-wrapped screw hole 101; during machining, the rotary worktable 4 drives the positioning member 2 to rotate to move the screw hole 101 to be machined to correspond to the drill bit 10.

[0103] Among them, 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 wrapping tape 1, and the lower side of the positioning member 2 is a root cleaning plane 202. During processing, the inner side surface of a wrapping tape 1 is attached to the upper side outer surface 201 of the positioning member 2, and the lower end surface of the wrapping tape 1 is attached to the root cleaning plane 202. At this time, the outer side surface of the wrapping tape 1 is perpendicular to the root cleaning plane 202.

[0104] Among them, a positioning circular cavity 203 is provided in the positioning member 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 wrapping tape 1 to the side wall of the positioning circular cavity 203, thereby facilitating the alignment of the outer surface of the wrapping tape 1.

[0105] A positioning plane 204 is provided on the top of the positioning member 2 , and the positioning plane 204 is a horizontal plane, so that the positioning reference of the bottom of the strap 1 is transferred to the positioning plane 204 , thereby facilitating alignment of the bottom surface of the strap 1 .

[0106] Among them, a plurality of holes 205 are opened on the upper outer surface 201 of the positioning member 2. The inner outer surface of the wrapping tape 1 is affixed to the upper outer surface 201 of the positioning member 2, and the lower end surface of the wrapping tape 1 is affixed to the root-clearing 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 wrapping tape 1. After processing is completed, the plurality of holes 205 correspond one-to-one with the screw holes 101 of the wrapping tape 1, and the aperture size of each hole 205 is larger than the aperture size of the screw holes 101 of the wrapping tape 1. For example, the diameter of the screw holes 101 of the wrapping tape 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 strap 1 , the drill bit will penetrate the strap 1 and drill into the positioning member 2 . At this time, the hole 205 on the upper outer surface 201 of the positioning member 2 will avoid the drill bit and prevent the drill bit from swinging.

[0107] Specifically, the height dimension 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 wrapping tape 1 and facilitate the installation of the wrapping tape 1.

[0108] The wrapping tape 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 member 2 is set accordingly to be able to adapt to the inner surface size of the wrapping tape 1.

[0109] Specifically, the diameter of the positioning circular cavity 203 is 250 mm.

[0110] Specifically, a plurality of fixing members 3 are installed on the side of the positioning member 2. The fixing member 3 includes a universal support head assembly for squeezing the outer surface of the wrapping tape 1 and a control member for controlling the movement state of the universal support head assembly toward the outer surface of the wrapping tape 1.

[0111] Among them, the universal support head assembly includes a transmission plate 301, a connecting piece 302 with one end screwed into the transmission plate 301, and a universal support head 303 rotatably arranged in the connecting piece 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 wrapping tape 1; thereby, the transmission plate 301 drives the connecting piece 302 and the universal support head 303 to move toward the outer end face of the wrapping tape 1, and when the end of the universal support head 303 contacts the outer surface of the wrapping tape 1, the universal support head 303 rotates in the connecting piece 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 wrapping tape 1, thereby realizing the extrusion limitation of the wrapping tape 1.

[0112] 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.

[0113] The control part includes a positioning bolt 304 having one end screwed to the lower end of the positioning part 2 and a nut 305 screwed to 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 wrapping tape 1.

[0114] 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.

[0115] Among them, a T-slot 401 is provided on the rotary worktable 4, and a T-nut 5 is provided in the T-slot 401. A screw 6 is threaded in the T-nut 5, and a pressure plate 7 is sleeved on the screw 6. The positioning piece is placed between the pressure plate 7 and the rotary worktable 4, and the fastening nut 8 is screwed on the upper end of the screw 6 so that the pressure plate 7 is squeezed on the top of the positioning piece 2 to achieve fixation of the positioning piece 2 and ensure the stability of the wrapping tape 1 during processing.

[0116] The rotation center 11 of the positioning member coincides with the center of the rotary table 4 , the surface of the rotary table 4 is parallel to the positioning plane 204 , and the positioning plane 204 is horizontally distributed.

[0117] The drill bit 10 is movably arranged on a machine tool along a direction perpendicular to the outer surface of the wrapping tape 1 , so that the drill bit 10 can be controlled by the machine tool to move toward the point to be processed of the screw through hole 101 to process the screw through hole 101 .

[0118] Example 2

[0119] 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 wrapping tape 1. The inner outer surfaces of the two wrapping tapes 1 are fitted on the upper outer surface 201 of the positioning member 2. At this time, the outer outer surfaces of the two wrapping tapes 1 are perpendicular to the root cleaning plane 202, thereby achieving the simultaneous positioning of the two wrapping tapes 1 in the horizontal direction.

[0120] During processing, the lower end surfaces of the two wrapping tapes 1 are attached to the root cleaning plane 202 to simultaneously position the two wrapping tapes 202 in the vertical direction.

[0121] Example 3

[0122] The difference from Example 1 is that: the upper side of the positioning member 2 is a three-arc cylindrical structure, each of which matches the inner surface of the wrapping belt 1;

[0123] 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 wrapping tapes 1 are respectively attached to the three arc-shaped surfaces, and the bottoms of the three wrapping tapes 1 are attached to the root cleaning plane 202. At this time, the outer side surfaces of the three wrapping tapes 1 are respectively perpendicular to the root cleaning plane 202, so as to achieve simultaneous positioning of the three wrapping tapes 1.

[0124] Example 4

[0125] 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 wrapping belt 1;

[0126] 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 wrapping tapes 1 are respectively attached to the four arc-shaped surfaces, and the bottoms of the four wrapping tapes 1 are attached to the root cleaning plane 202. At this time, the outer side surfaces of the four wrapping tapes 1 are respectively perpendicular to the root cleaning plane 202, so as to achieve simultaneous positioning of the four wrapping tapes 1.

[0127] Example 5

[0128] A horizontal machining method for a tape-wrapped sheet metal formed part comprises the following steps:

[0129] Step 1: Fix the positioning member 2 on the horizontal processing device and align the positioning member 2;

[0130] Wherein, in step 1, it includes:

[0131] 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;

[0132] 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 11 of the positioning member coincides with the rotation center of the rotary table 4, and the process of dialing and aligning is completed.

[0133] S12: Fix the positioning member 2 on the rotary table 4;

[0134] 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 .

[0135] S13: Aligning the positioning member 2 using the positioning plane 204 on the top of the positioning member 2 as an alignment reference plane.

[0136] 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.

[0137] Step 2: Place the wrapping tape 1 on the root-clearing surface 202 of the positioning member 2, and adjust the position of the wrapping tape 1 so that the inner surface of the wrapping tape 1 is completely in contact with the upper outer surface 201 of the positioning member 2;

[0138] Among them, the position of the wrapping tape 1 is adjusted so that the inner surface of the wrapping tape 1 fits on the upper outer surface 201 of the positioning member 2. At this time, the processing points of the screw through holes 101 correspond one-to-one to the multiple holes 205 on the upper outer surface 201 of the positioning member 2.

[0139] 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 wrapping tape 1;

[0140] Step 4: Determine the locations of the screw holes 101 of the wrapping tape to be processed, and use a drill to process the screw holes 101 of the wrapping tape 1 .

[0141] Specifically, they include:

[0142] S41: Establish a coordinate system on the positioning part to determine the coordinates of the points to be processed;

[0143] First, three mutually perpendicular reference planes are created, and 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;

[0144] Establish a coordinate system based on three reference planes;

[0145] According to the position to be processed of the screw through hole 101 of the strap 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°);

[0146] The processing position of the screw hole 101 to be processed at the end of the wrapping tape 1 is the first processing point, and the processing position of the screw hole 101 to be processed at the other end of the wrapping tape 1 is the final processing point;

[0147] S42: Based on the established coordinate system, the rotary table 4 is controlled by the machine tool to rotate, so that the drill bit 10 is moved to the points to be processed in sequence, and the screw through holes 101 are processed.

[0148] After the screw holes 101 of the wrapping tape 1 are processed, the screw holes 101 of the wrapping tape 1 correspond one-to-one with the multiple holes 205 on the upper outer surface 201 of the positioning member 2 .

[0149] Based on the processing device of Example 2, the screw holes 101 of the strapping pieces #01-#10 were processed using the above processing method; and the strapping pieces #11-#15 were fixed using the existing gluing method. The strapping pieces 1 were processed, and the processed strapping pieces 1 were removed and tested. The test results are shown in Table 1.

[0150] Table 1 Test results

[0151] ;

[0152] As shown in Table 1, the processing of the strap screw holes 101 does not affect the appearance of the strap 1, and the screw hole positions are not shifted, resulting in high processing quality. Furthermore, the assembly and disassembly time for a single piece of strap 1 can be reduced to 115 seconds, improving overall processing efficiency. This shows that the present invention can achieve high-efficiency and high-precision processing of the strap screw holes 101, overcoming the difficulty of clamping and positioning the strap 1 during processing.

[0153] 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.

[0154] 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 machining method for long irregularly shaped sheet metal parts, characterized by: The following processing device is used, the processing device comprising a positioning member for clamping a long irregular-shaped sheet metal part, a rotary worktable for carrying the positioning member, and a drill bit for processing screw holes in the long irregular-shaped sheet metal part; the long irregular-shaped sheet metal part is an arc-shaped bending structure composed of multiple circular arc surfaces of different diameters and tangent irregular curved surfaces; The upper outer surface of the positioning member matches the inner surface of the long irregular-shaped sheet metal member, and the inner surface of the long irregular-shaped sheet metal member fits on the upper outer surface of the positioning member; During processing, the rotary table drives the positioning parts to rotate, so as to move the processing points of the screw holes of the long irregular-shaped sheet metal parts to correspond with the drill bit; A positioning circular cavity is provided inside the positioning member; the rotation center of the positioning circular cavity coincides with the rotation center of the rotary table; The processing device further comprises a fixing member, at least three of which are pressed tightly against the outer surface of the same long irregular-shaped sheet metal member; The fixing member includes a universal support head assembly for extruding the outer surface of the long irregular-shaped sheet metal part and a control member for controlling the movement of the universal support head assembly toward the outer surface of the long irregular-shaped sheet metal part; 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 long irregular-shaped sheet metal part; when the end of the universal support head contacts the outer surface of the long irregular-shaped sheet metal 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 long irregular-shaped sheet metal part is a banded sheet metal forming part; 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 taped sheet metal part on the clearing surface of the positioning piece, and adjust the position of the taped sheet metal part so that the inner surface of the taped sheet metal part is completely in contact with the upper outer surface of the positioning piece; 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 sheet metal forming part; Step 4: Use a drill to process the screw holes of the sheet metal forming parts; Step 4 includes: S41: Establish a coordinate system on the positioning part to determine the coordinates of the points to be processed; S42: Based on the established coordinate system, the rotary table is controlled by the machine tool to rotate, so that the drill bit moves to the points to be processed in sequence to perform screw hole processing.

2. The horizontal machining method for long irregular-shaped sheet metal parts according to claim 1, characterized in that: The lower side of the positioning member is a root cleaning plane, and the lower end surface of the long irregular-shaped sheet metal part is attached to the root cleaning plane; Wherein, the root cleaning plane is a horizontal plane. When the lower end surface of the long irregular-shaped sheet metal part is attached to the root cleaning plane, the outer surface of the long irregular-shaped sheet metal part is perpendicular to the root cleaning plane.

3. The horizontal machining method for long irregular-shaped sheet metal parts according to claim 1, characterized in that: The upper and lower ends of the positioning circular cavity are open.

4. The horizontal machining method for long irregular-shaped sheet metal parts according to claim 3, characterized in that: The rotary workbench is provided with a T-slot, and is also provided with a T-nut matched with the T-slot, and a screw is screwed into the T-nut; Wherein, a pressing plate is sleeved on the screw rod, and the positioning piece is placed between the pressing plate and the rotary workbench to fix the positioning piece on the rotary workbench.

5. The horizontal machining method for long irregular-shaped sheet metal parts according to claim 1, characterized in that: The drill bit is movably arranged on a machine tool along a direction perpendicular to the outer surface of the long irregular-shaped sheet metal part, so that the drill bit is controlled by the machine tool to move toward a point to be processed of a screw through hole.

6. The horizontal machining method for long irregular-shaped sheet metal 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.

7. The horizontal machining method for long irregular-shaped sheet metal parts according to claim 1, characterized in that: The upper outer surface of the positioning piece is provided with multiple holes. When the inner surface of the long irregular sheet metal part is attached to the upper outer surface of the positioning piece, the multiple holes correspond one-to-one to the positions of the screw holes to be processed on the long irregular sheet metal part.

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