Aerospace Conduit Chamfering Device and Cutter Head Mechanism

Abstract

The present invention discloses an aerospace conduit chamfering device and a cutter head mechanism, which include a cutter head body, a first mounting seat, a second mounting seat, a first adjusting member, a second adjusting member and a third adjusting member; one end of the cutter head body is provided with a first positioning groove, the first mounting seat and the second mounting seat are both located in the first positioning groove, the first adjusting member can adjust the position of the first mounting seat in the radial direction of the cutter head body, the second adjusting member can adjust the inclination angle of the first mounting seat in the first positioning groove, and the third adjusting member can wedge the first mounting seat in the first positioning groove by the second mounting seat. Thus, the chamfering device can perform chamfering operations on thin-walled conduits of different specifications, and can also change the position and angle of chamfering according to requirements.

Description

Technical Field

[0001] The invention relates to the field of aerospace, and in particular to a chamfering device and a cutter disc mechanism for aerospace ducts. Background Art

[0002] Due to lightweight technical requirements, a large number of thin-walled metal conduits are designed for airplanes and rockets. Due to process conditions, the inner and outer corners of both ends of the conduits need to be chamfered after cutting. However, the wall of the lightweight conduit is very thin, and the wall thickness of most conduits is only 1mm. Therefore, it is difficult for the end of the conduit to present a standard circle during chamfering. It is very easy to have uneven processing at the inner and outer corners of the conduit during chamfering. Some of the inner and outer corners of the conduit have been processed too much, and the chamfer size has reached the upper limit. Some positions have not been processed to the lower limit, or even have not been cut, which seriously affects the quality of aerospace conduit products. It can only rely on manual repair by skilled workers, which leads to high costs, low efficiency, and serious waste of human resources. The invention is professionally used for accurate chamfering of both ends of thin-walled conduits for aircraft and rockets.

[0003] The patent document with publication number CN214684299U discloses a full-circle chamfering mechanism, including a full-circle mechanism and a chamfering mechanism; the full-circle mechanism includes: a support sleeve, which is fixed horizontally and one end protrudes outward to form a baffle; a pulling shaft, which is coaxial with the support sleeve, passes through the support sleeve and is slidably connected with it; a tapered core, which is conical and coaxially fixed on the pulling shaft, with the tip of the cone facing the support sleeve; at least three expansion blocks, which are evenly distributed around the tapered core in the circumferential direction, and the surface facing the outside is a cylindrical convex surface that fits the inner wall of the pipe fitting, and the surface facing the inside is a conical concave surface that fits the side surface of the tapered core, and when the expansion blocks fit the inner wall of the pipe fitting, there is a gap between each expansion block; the chamfering mechanism includes: a tool holder, which is arranged on the support sleeve through a sliding bearing sleeve, so that after the tool holder slides toward the pipe fitting, the tool for chamfering fixed on the tool holder contacts the outer edge of the end of the pipe fitting. It can be seen from this that the round tube chamfering device in the prior art can only process pipes of a single specification, and the chamfering angle and position are both single. Summary of the invention

[0004] In order to solve the problem of thin-walled catheters in the prior art, the purpose of the present invention is to provide an aerospace catheter chamfering device and a cutter disc mechanism, which can chamfer thin-walled catheters of different specifications and can also change the chamfering position and angle as required.

[0005] To achieve the above object, the present invention adopts the following technical solutions: A cutter head mechanism for chamfering aerospace ducts, comprising a cutter head body, a first mounting seat, a second mounting seat, a first adjusting member, a second adjusting member, and a third adjusting member; one end of the cutter head body is provided with a first positioning groove, the first positioning groove extends radially, the first positioning groove includes a first connecting surface and a second connecting surface in relative positions, the first mounting seat includes a third connecting surface and a fourth connecting surface in relative positions, and the second mounting seat includes a fifth connecting surface and a sixth connecting surface in relative positions; wherein, the first connecting surface, the third connecting surface, the fourth connecting surface, and the fifth connecting surface are all inclined surfaces, the second connecting surface and the sixth connecting surface are flat surfaces, the first connecting surface and the third connecting surface are parallel to each other, the fourth connecting surface and the fifth connecting surface are parallel to each other, and the second connecting surface and the sixth connecting surface are parallel to each other; a part of the second mounting seat is located in the first positioning groove, and the blade is fixedly installed on the part of the second mounting seat outside the first positioning groove; the first adjusting member is connected to the cutter head body and the second mounting seat, and can drive the second mounting seat to move radially; the second adjusting member is connected to the cutter head body, and one end of the second adjusting member can be adjusted to extend into the first positioning groove and can adjust the length of extension into the first positioning groove; the third adjusting member is used to connect the first mounting seat and the cutter head body; the way to fix the blade position is: 1) Fix the blade on the second mounting seat, and adjust the position of the second mounting seat in the radial direction of the cutter head body through the first adjusting member; 2) Adjust the length of the second adjusting member extending from the cutter head body into the first positioning groove to change the position where the second adjusting member abuts against the second mounting seat; 3) Drive the first mounting seat to move towards the other end of the cutter head body through the third adjusting member, so that the first connecting surface abuts tightly against the third connecting surface, the fourth connecting surface of the first mounting seat pushes against the fifth connecting surface of the second mounting seat, so that the second mounting seat moves relative to the second connecting surface and the second adjusting member, and makes the second connecting surface of the first positioning groove abut tightly against the sixth connecting surface of the second mounting seat, and makes the second mounting seat abut tightly against the second adjusting member, thereby completing the blade positioning.

[0006] Preferably, the first adjusting member includes a first adjusting screw rod extending radially, the first adjusting screw rod is connected to the cutter head body, and the first adjusting screw rod is threadedly connected to the second mounting seat.

[0007] Preferably, the second adjusting member includes two second adjusting screw rods, the two second adjusting screw rods are arranged radially and axially extended, the two second adjusting screw rods are both threadedly connected to the cutter head body, and the two second adjusting screw rods can both extend into the first positioning groove from the other end of the cutter head body.

[0008] Preferably, the third adjusting member includes two third adjusting screw rods, the two third adjusting screw rods are arranged radially and axially extended, and the two third adjusting screw rods are both threadedly connected to the cutter head body after passing through the second mounting seat.

[0009] Preferably, a second positioning groove matching the shape of the blade is formed in the second mounting seat, and part of the blade is located in the second positioning groove and fixedly connected to the second mounting seat.

[0010] Preferably, the central position at one end of the cutter head body is concave, part of the second mounting seat extends into the concave area of the cutter head body, and the blade is mounted on the part of the second mounting seat extending into the concave area.

[0011] Preferably, there are a plurality of the first positioning grooves, and the distance between any two adjacent first positioning grooves is the same.

[0012] Preferably, the first positioning groove includes a first positioning portion and a second positioning portion. The first positioning portion and the second positioning portion communicate with each other. The depth of the first positioning portion is less than that of the second positioning portion. The first mounting seat is located in the first positioning portion, and the second mounting seat is located in the second positioning portion.

[0013] Preferably, a tailstock for connecting to the main shaft protrudes from the other end of the cutter head body.

[0014] A chamfering device for aerospace ducts includes a cutter head mechanism for chamfering aerospace ducts.

[0015] The beneficial effects of the technical solution of the present invention are as follows: Since the second connection surface and the sixth connection surface are flat, after the second mounting seat is fixed, the rotation of the second mounting seat can be prevented, the rotation of the blade can be prevented, and thus the processing accuracy and stability of the cutter head mechanism can be ensured; the radial position and the angle of the blade can be adjusted. Even after the blade is worn and reground, the angle of the second mounting seat can be adjusted through the adjusting member, the positioning member and the first mounting seat, so that the blade meets the use requirements. The above-mentioned cutter head mechanism can match more types of blades, can process chamfers at richer angles, can finely adjust the position of the blade, improve the processing accuracy of the chamfer, and improve the yield rate of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural view of the chamfering device in the present invention Figure 1 ;

[0017] Figure 2 is a schematic structural view of the chamfering device in the present invention Figure 2 ;

[0018] Figure 3 is a schematic connection structure view of the outer clamping assembly and the workbench Figure 1 ;

[0019] Figure 4 is a schematic connection structure view of the outer clamping assembly and the workbench Figure 2 ;

[0020] Figure 5 Schematic diagram of the connection structure between the inner support component and the cutter head mechanism Figure 1 ;

[0021] Figure 6 Schematic diagram of the connection structure between the inner support component and the cutter head mechanism Figure 2 ;

[0022] Figure 7 It is Figure 6 The enlarged view of position A in

[0023] Figure 8 Schematic diagram of the connection structure between the main shaft and the cutter head mechanism

[0024] Figure 9 Schematic diagram of the connection structure between the cutter head body and the blade

[0025] Figure 10 Schematic diagram of the cutter head body structure

[0026] Figure 11 Schematic diagram of the structure of the second mounting seat

[0027] Figure 12 Schematic diagram of the structure of the first mounting seat

[0028] Figure 13 Schematic diagram of the structure of the fixing plate

[0029] Figure 14 Schematic diagram of the structure of the second fixing sleeve

[0030] Figure 15 Schematic diagram of the structure of the first fixing sleeve

[0031] Figure 16 Schematic diagram of the structure of the third fixing sleeve

[0032] Reference numerals: 1, catheter; 2, workbench; 21, side plate; 22, top plate; 23, opening of the workbench; 24, collector; 25, first slide rail; 3, main shaft; 31, housing; 32, sliding bracket; 34, protective cover; 35, second fixed sleeve; 36, first fixed sleeve; 37, third fixed sleeve; 38, locking member; 4, cutter head body; 41, first positioning groove; 411, first connecting surface; 412, second connecting surface; 413, avoidance groove; 42, mounting surface; 43, tailstock; 44, first mounting seat; 441, third connecting surface; 442, fourth connecting surface; 45, second mounting seat; 451, fifth connecting surface; 452, sixth connecting surface; 453, second positioning groove; 46, positioning plate; 461, notch; 47, first adjusting member; 48, second adjusting member; 5, blade; 6, first driving mechanism; 61, first transmission box; 62, first servo motor; 7, second driving mechanism; 71, second servo motor; 72, second transmission box; 73, transmission lead screw; 74, transmission nut seat; 75, bearing seat; 8, inner support assembly; 81, connecting seat; 82, inner support body; 83, conical head; 84, push-pull rod; 85, spring; 86, third servo motor; 87, third transmission box; 9, outer clamping assembly; 91, first mounting plate; 92, two second mounting plates; 93, four servo motor; 94, fourth transmission box; 95, bidirectional lead screw; 96, clamping nut seat; 97, second slide rail; 98, second slider; 99, clamping plate. Detailed implementation mode

[0033] The embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present invention and should not be construed as a limitation of the present invention.

[0034] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0035] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality of" is two or more, unless otherwise clearly defined.

[0036] In the present invention, unless otherwise clearly specified and defined, terms such as "mounted", "connected", "coupled", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] In the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature has a lower horizontal height than the second feature.

[0038] Embodiment

[0039] A cutter head mechanism for chamfering aerospace ducts, such as Figures 7 - 13As shown in the figure, it includes a cutter head body 4, a first mounting seat 44, a second mounting seat 45, a first adjusting member 47, a second adjusting member 48 and a third adjusting member; one end of the cutter head body 4 is provided with a first positioning groove 41, the first positioning groove 41 extends radially, the first positioning groove 41 includes a first connecting surface 411 and a second connecting surface 412 in a relative position, the first mounting seat 44 includes a third connecting surface 441 and a fourth connecting surface 442 in a relative position, and the second mounting seat 45 includes a fifth connecting surface 451 and a sixth connecting surface 452 in a relative position; wherein, the first connecting surface 411, the third connecting surface 441, the fourth connecting surface 442 and the fifth connecting surface 451 are all inclined surfaces, the second connecting surface 412 and the sixth connecting surface 452 are flat surfaces, the first connecting surface 411 and the third connecting surface 441 are parallel to each other, the fourth connecting surface 442 and the fifth connecting surface 451 are parallel to each other, and the second connecting surface 412 and the sixth connecting surface 452 are parallel to each other; part of the second mounting seat 45 is located in the first positioning groove 41, and the blade 5 is fixedly installed on the part of the second mounting seat 45 outside the first positioning groove 41; the first adjusting member 47 is connected to the cutter head body 4 and the second mounting seat 45, and the first adjusting member 47 can drive the second mounting seat 45 to move radially with respect to the cutter head body 4; the second adjusting member 48 is connected to the cutter head body 4, and one end of the second adjusting member 48 can extend into the first positioning groove 41 and can adjust the position of abutting against the second mounting seat 45; the third adjusting member is used to connect the first mounting seat 44 and the cutter head body 4; the way to fix the position of the blade 5 is as follows: 1) Fix the blade 5 on the second mounting seat 45, and adjust the position of the second mounting seat 45 in the radial direction of the cutter head body 4 through the first adjusting member 47; 2) Adjust the length of the second adjusting member 48 passing through the cutter head body 4 and extending into the first positioning groove 41 to change the position of the second adjusting member 48 abutting against the second mounting seat 45; 3) Drive the first mounting seat 44 to insert into the first positioning groove 41 through the third adjusting member, so that the first connecting surface 411 abuts tightly against the third connecting surface 441, the fourth connecting surface 442 of the first mounting seat 44 pushes against the fifth connecting surface 451 of the second mounting seat 45, so that the second mounting seat 45 moves towards the second connecting surface 452 and the second adjusting member 48, so that the second connecting surface 412 of the first positioning groove 41 abuts tightly against the sixth connecting surface 452 of the second mounting seat 45, and the second mounting seat 45 abuts tightly against the second adjusting member 48, thereby completing the positioning of the blade 5.

[0040] With such a setting, since the second connecting surface and the sixth connecting surface are flat surfaces, after the second mounting seat is fixed, the rotation of the second mounting seat and the rotation of the blade can be prevented, thereby ensuring the machining accuracy of the cutter head mechanism; the radial position and the angle of the blade can be adjusted. Even after the blade is worn and reground, the angle of the second mounting seat can be adjusted through the adjusting member, the positioning member and the first mounting seat, so that the blade meets the use requirements. The above cutter head mechanism can match more types of blades, can process chamfer angles more richly, can finely adjust the position of the blade, improve the machining accuracy of the chamfer, and improve the yield rate of the product.

[0041] In this embodiment, the first adjusting member 47 includes a first adjusting screw rod, the first adjusting screw rod is connected to the cutter head body 4, and the first adjusting screw rod is in threaded connection with the second mounting seat 45. In this way, by rotating the first adjusting screw rod, the second mounting seat 45 is driven to slide on the cutter head body 4, thereby completing the radial adjustment of the blade position. Further, an installation surface 42 is provided on the outer peripheral surface of the cutter head body 4, the first positioning groove 41 penetrates through the installation surface 42, a positioning plate 46 is fixedly installed on the installation surface 42, a notch 461 is provided on the side of the positioning plate 46, and the notch 461 communicates with the first positioning groove 41. The first adjusting screw rod passes through the notch 461 of the fixing plate 46 and is in threaded connection with the second mounting seat 45. With such a setting, the disassembly and assembly of the adjusting screw rod can be completed quickly, and a certain space can be provided for the radial swing of the adjusting screw rod. Further, an avoidance groove 413 communicating with the first positioning groove 41 is provided on the installation surface 42, a rotating seat is provided at the notch 461 of the positioning plate 46, and the shape of the avoidance groove 413 matches the outer shape of part of the rotating seat. The first adjusting screw rod is rotatably installed on the rotating seat. Furthermore, the first adjusting screw rod can rotate and swing, and the quick positioning of the second mounting seat and the first adjusting screw rod can be realized through the avoidance groove and the rotating seat, which not only simplifies the structure of the cutter head mechanism but also facilitates the assembly of the cutter head mechanism. In order to further improve the positioning accuracy of each component and reduce the assembly difficulty of the cutter head mechanism, in this embodiment, the first positioning groove 41 includes a first positioning portion and a second positioning portion, the first positioning portion and the second positioning portion communicate with each other, the depth of the first positioning portion is less than the depth of the second positioning portion, the first connecting surface 411 is the inner wall of the first positioning portion, the second connecting surface 412 is the inner wall of the second positioning portion, the first mounting seat 44 is inserted into the first positioning portion, the second mounting seat 45 is inserted into the second positioning portion, and the avoidance groove 413 communicates with the second positioning portion. With such a setting, the installation positions of the first mounting seat and the second mounting seat can be judged by the depth.

[0042] In order to finely adjust the angle of the cutter head, in this embodiment, the second adjusting member 48 includes two second adjusting screws. The two second adjusting screws are radially arranged and axially extended, and both are threadedly connected to the cutter head body 4. With such a setting, the second mounting seat can be more stably supported by the two adjusting screws. And during the fixing process of the second mounting seat, the two second adjusting screws can be slightly rotated respectively, so as to adjust the positions where the two second adjusting screws abut against the second mounting seat, thereby finely adjusting the inclination angle of the blade, improving the machining accuracy of the cutter head mechanism, and expanding the application range of the cutter head mechanism.

[0043] In order to make the fixing of the second mounting seat more reliable, in this embodiment, the third adjusting member includes at least two third adjusting screws. The two third adjusting screws are radially arranged and axially extended, and both are threadedly connected to the cutter head body 4 after passing through the second mounting seat 45. With such a setting, the two radially arranged bolts can enable the first mounting seat to well cooperate with the inclination of the second mounting seat, ensuring that the first mounting seat has more contact surfaces with the second mounting seat and the first positioning groove, and ensuring that the second mounting seat is stably fixed at the current position and the current angle.

[0044] In this embodiment, as Figures 1 - 8 shown, three first positioning grooves 41 are formed on the cutter head body 4, and the distances between adjacent two first positioning grooves are the same. The first mounting seat 44 and the second mounting seat 45 can be installed at any first positioning groove 41. In this way, the machining efficiency of the cutter head mechanism can be effectively improved. Further, a second positioning groove 453 matching the outer shape of the blade is formed on the second mounting seat 45. Part of the blade 5 is located in the second positioning groove 453 and is fixedly connected to the second mounting seat 45. With such a setting, the blade fits better with the second mounting seat, and the protrusion amounts of the blades installed on any second mounting seat are the same, ensuring the machining accuracy of the cutter head mechanism and reducing the difficulty of blade positioning.

[0045] In order to reduce the weight of the cutter head mechanism, in this embodiment, as Figures 8 - 10 shown, the central position at one end of the cutter head body 4 is concave, and part of the second mounting seat 45 extends into the concave area 40 of the cutter head body 4. The blade 5 is installed on the end of the second mounting seat 45 extending into the concave area 40. With such a setting, the weight of the cutter head mechanism is reduced, and the distance between the workpiece to be machined and the end face of the cutter head body where the blade is installed is closer.

[0046] In order to facilitate the installation of the cutter head, in this embodiment, as Figure 6 、 Figure 7 、 Figure 8 、 Figure 14 、 Figure 15 and Figure 16One end of the cutter head body 4 where the blade 5 is installed is the processing end, and the other end of the cutter head body 4 is the fixed end. A tubular tailstock 43 protrudes at the central position of the fixed end of the cutter head body 4. The tailstock 43 of the cutter head body 4 is inserted into the main shaft 3, and the cutter head body 4 is coaxially fixed to the main shaft 3 through the first fixing sleeve 36, the second fixing sleeve 35 and the third fixing sleeve 37; a tapered first connection hole is provided at the central position of one end of the main shaft 3. The two ends of the first fixing sleeve 36 are respectively a first connection end 361 and a second connection end 362. The first connection end 361 matches the first connection hole of the main shaft 3, and a tapered second connection hole is provided on the second connection end 362 of the first fixing sleeve 36; the second fixing sleeve 35 is made of an elastic material. The two ends of the second fixing sleeve 35 are respectively a third connection end 351 and a fourth connection end 352. Both the third connection end 351 and the fourth connection end 352 are tapered. The second fixing sleeve 35 has an inner hole that runs through its body. A plurality of first slotted holes are provided on the third connection end 351. The first slotted holes communicate with the inner hole of the second fixing sleeve 35. The first slotted holes cut the third connection end into multiple petals. A plurality of second slotted holes are provided on the fourth connection end 352. The second slotted holes communicate with the inner hole of the second fixing sleeve 35. The second slotted holes cut the fourth connection end into multiple petals. The multiple first slotted holes and the multiple second slotted holes are arranged alternately one by one; the third fixing sleeve 37 includes a fifth connection end 371 and a sixth connection end 372. The third fixing sleeve 37 has an inner hole that runs through its body. The inner diameter of the section of the inner hole of the third fixing sleeve 37 located inside the sixth connection end 372 gradually becomes smaller.The process of installing the cutter head body 4 on the main shaft 3 is as follows: The first connection end 361 of the first fixed sleeve 36 is inserted into the first connection hole of the main shaft 3, and the inner wall of the first connection hole of the main shaft 3 abuts against the outer end of the first connection end 361 of the first fixed sleeve 36. And the first fixed sleeve 36 is fixed on the main shaft 3 through the locking member 38. First, the third fixed sleeve 37 is sleeved on the tailstock 43 of the cutter head body 4, and then the second fixed sleeve 35 is sleeved on the tailstock 43 of the cutter head body 4, and the fourth connection end 352 of the second fixed sleeve 35 is first inserted into the third fixed sleeve 37. Then, the third connection end 351 of the second fixed sleeve 35 is inserted into the second connection hole of the second connection end 362 on the first fixed sleeve 36. The fifth connection end 371 of the third fixed sleeve 37 is sleeved outside the second connection end 362 of the first fixed sleeve 36 and is threadedly connected. The sixth connection end 372 of the third fixed sleeve 37 is buckled on the outer conical surface of the fourth connection end 352 of the second fixed sleeve 35. Rotate the third fixed sleeve 37 so that the third fixed sleeve head 37 moves towards the main shaft 3 through the thread. The third fixed sleeve 37 pushes against the fourth connection end 352 of the second fixed sleeve 35, causing the second fixed sleeve 35 to move towards the main shaft 3. During the movement of the second fixed sleeve 35, the distance between the first split grooves on the third connection end 351 of the second fixed sleeve 35 gradually shortens, thereby gradually tightening the tailstock 43 of the cutter head body 4, the second fixed sleeve 35, the first fixed sleeve 36, and the third fixed sleeve 37, and then fixing the cutter head body 4 on the main shaft 3. With such a setting, the quick disassembly and assembly of the cutter head body and the main shaft can be realized, and the quick centering and positioning of the main shaft and the cutter head body can be achieved, thereby facilitating the replacement of the main shaft and the cutter head body. Further, two fixing grooves 364 are symmetrically arranged on the outer periphery of the first fixed sleeve 36. A plurality of threaded holes are provided on the output end of the main shaft 4, and the plurality of threaded holes on the output end of the main shaft 4 are arranged around the first connection hole. The locking member 38 fixes the first fixed sleeve to the main shaft through bolts and the fixing grooves 364. In other embodiments, an annular fixing protrusion 363 is provided on the outer periphery of the first fixed sleeve. The locking member can be stuck on the fixing protrusion 363 and connected to the threaded holes on the main shaft 4 through bolts, thereby fixing the first fixed sleeve 46 on the main shaft. With such a setting, through the conical surface and the structure form of expansion, the cutter head body can be quickly installed on the main shaft and the quick centering of the cutter head body and the main shaft can be realized, reducing the centering requirements during device installation.

[0047] A chamfering device for aerospace ducts, including the above-mentioned cutter head mechanism for chamfering aerospace ducts, as Figures 1 - 6As shown in the figure, it further includes a workbench 2, a main shaft 3, a first driving mechanism 6, a second driving mechanism 7, a third driving mechanism, an inner support assembly 8 and an outer clamping assembly 9; the main shaft 3 is installed on the workbench 2; the inner support assembly 8 includes an inner support body 82 capable of supporting the conduit 1 from the inside of the conduit 1 and a tapered head pull rod for driving the inner support body 82 to expand and support the conduit 1. The inner support body 82 is installed at the central position of the cutter head body 3, and the tapered head pull rod sequentially passes through the central positions of the inner support body 82, the cutter head body 4 and the main shaft 3; the first driving mechanism 6 is connected to the main shaft 3 and is used to drive the main shaft 3 to rotate. The second driving mechanism 7 is installed on the workbench 2 and is used to drive the main shaft 3 to move axially. When the main shaft 3 moves axially, it can drive the cutter head body 4, the blade 5, the inner support body 82 and the tapered head pull rod to move synchronously; the outer clamping mechanism 9 is installed on the workbench 2 and can clamp the conduit 1 from the outside of the conduit 1.

[0048] With such a setting, when chamfering a thin-walled conduit, both the inner and outer sides of the end of the thin-walled conduit to be chamfered are fixed. Furthermore, the probability of the end of the thin-walled conduit deforming during the chamfering operation can be reduced, and the tremor of the thin-walled conduit during the chamfering process can be reduced, avoiding tool bouncing, improving the chamfering effect of the thin-walled conduit and the smoothness of the chamfered end face. And because the inside of the conduit is supported by the inner support body, and the inner support body is coaxially arranged with the cutter head, this makes the centering accuracy between the conduit and the cutter head higher, and the yield rate of the thin-walled conduit higher; since the inner support body is installed on the cutter head and the tapered head pull rod passes through the cutter head and the main shaft, such a structure makes the coaxiality of each component in the chamfering device higher, making the chamfering processing accuracy higher, and such a structure is more convenient for positioning each component in the chamfering device and the overall assembly of the device, and makes the structure of the chamfering device more compact.

[0049] In order to facilitate the quick replacement and centering of the inner support body and the cutter head body, in this embodiment, as Figure 6 and Figure 7As shown in the figure, the inner support assembly 8 further includes a connecting seat 81. The connecting seat 81 has an inner hole. One end of the connecting seat 81 is fixed at the central position of the cutter head body 4 through a plurality of bolts. The connecting seat 81 is located in the recessed area of the cutter head body. The other end of the connecting seat 81 is threadedly connected to the inner support member 82. The inner hole of the cutter head body 4 and the inner hole of the connecting seat 81 are communicated and coaxial. The blade 5 is installed at one end of the second mounting seat 45 close to the connecting seat 81. One end of the inner support body 82 is the seventh connecting end threadedly connected to the connecting seat 81, and the other end of the inner support body 82 is the support end. The seventh connecting end on the inner support body 82 is inserted into the connecting seat 81 and threadedly connected to the inner hole of the connecting seat 81, so that the same connecting seat 81 can match more specifications of the inner support body 82. After the inner support body 82 is installed on the connecting seat 81, a shoulder is provided at the position of the inner support body 82 where the connecting end and the support end are connected, and the shoulder is attached to the end face of the connecting seat 81, so that the installation of the inner support body is more stable. When chamfering conduits with different inner diameter specifications, the inner support body 82 can be quickly replaced. The support end of the inner support body 82 is multi-petal shaped. When the tapered head pull rod axially moves, it can push against the inner wall of the support end of the inner support body 82, causing the support end of the inner support body 82 to expand outward to shape and support the thin-walled conduit. With such a setting, the inner support body and the cutter head body can be quickly centered, and the inner support body can be quickly disassembled and assembled. Furthermore, inner support bodies of different specifications can be connected to the connecting seat, enabling inner support bodies of different specifications to be quickly centered and positioned with the cutter head body, avoiding repeated alignment and improving the working efficiency of the device. In this way, the chamfering device can stably fix the conduit from both the inside and outside by quickly replacing the inner support body matching the conduit to be processed and cooperating with the movement of the clamping plate, thereby improving the versatility of the device.

[0050] To further simplify the structure of the chamfering device and make the components of the device more convenient for disassembly and replacement, in this embodiment, as Figure 6 and Figure 7As shown in the figure, the tapered head pull rod includes a push pull rod 84 and a tapered head 83 in the shape of a frustum of a cone. The tapered head 83 has an outer conical surface that matches the inner hole of the support end of the inner support body 82. One end of the push pull rod 84 is threadedly connected to the end with a smaller outer diameter of the tapered head 83. The outer diameter of the push pull rod 84 is smaller than the outer diameter of the tapered head 83. The other end of the push pull rod 84 passes through the inner hole of the connecting seat 81. The inner holes of the cutter head body 4 and the main shaft 3 are coaxial. The end of the tapered head 83 can extend into the support end of the inner support member 82, thereby expanding the support end of the inner support member; the inner hole of the connecting seat 81 is a stepped hole. The inner diameter of the part of the inner hole of the connecting seat 81 close to the cutter head body 4 is smaller, and the inner diameter of the end of the connecting seat 81 connecting the inner support body 82 is larger. A spring 85 is sleeved on the push rod 84. The spring 85 is located in the inner hole of the connecting seat 81. One end of the spring 85 abuts against the stepped surface of the inner hole of the connecting seat 81, and the other end of the spring 85 abuts against the end with a smaller outer diameter of the tapered head 83. In this way, the split-designed tapered head pull rod can make the installation of the chamfering device more convenient, and the spring can prevent the tapered head pull rod from jamming, so that it can be stably reset to ensure the effectiveness of the device.

[0051] In order to realize the rotation and axial movement of the main shaft, in this embodiment, as Figure 1 , Figure 2 , Figure 5 , Figure 6 and Figure 7As shown in the figure, the chamfering device further includes a housing 31. The main shaft 3 is rotatably installed on the housing 31. The first driving mechanism 6 is installed on the housing 31 and can be connected to the main shaft 3. The housing 31 is slidably connected to the workbench 2 and connected to the second driving mechanism 7. With such a setting, separate control of the movement and rotation of the main shaft can be achieved, aiming to improve the machining accuracy of chamfering thin-walled ducts. Specifically, the first driving mechanism 6 includes a first servo motor 62 and a first transmission box 61. The right end of the main shaft 3 is the output working end, and the cutter head body 3 is fixed on the working end. The first transmission box 61 is installed on the housing 31. The output end of the first transmission box 31 meshes and drives with a gear fixed on the main shaft 3. The first servo motor 62 is installed on the first transmission box 61 and is in transmission connection. The first servo motor 62 is used to provide power to the first transmission box 61, and the first servo motor 62 is arranged in the vertical direction. With such a setting, the first transmission box can be a reduction box, thereby improving the accuracy of main shaft speed control, facilitating installation, and the first transmission box can also change the direction of power transmission of the first servo motor, making the structure of the device more compact. Specifically, the second driving mechanism 7 includes a second servo motor 71, a second transmission box 72, a transmission lead screw 73, a transmission nut seat 74 and two bearing seats 75. The two bearing seats 75 are arranged in the left-right direction and fixedly installed on the workbench 2. The transmission lead screw 73 is rotatably connected to the two bearing seats 75. The transmission nut seat 74 is sleeved on the transmission lead screw 73 and the two are in threaded connection. The second transmission box 72 is installed on the workbench 2. The second servo motor 71 is installed on the second transmission box 72 and provides power to the second transmission box 72. The output end of the second transmission box 72 is connected to one end of the transmission lead screw 73. Thus, the second servo motor 71 can drive the transmission lead screw 73 to rotate through the second transmission box 72. A sliding bracket 32 is fixedly installed at the bottom of the housing 31. The transmission nut seat 74 is fixedly connected to the sliding bracket 32. The transmission lead screw 73 drives components such as the housing 31, the main shaft 3, the cutter head body 4 and the blade 5 installed on the sliding bracket 72 to move through the transmission nut seat 74. With such a setting, the second transmission box can be a reduction box. In this way, through the second transmission box and the second servo motor, the moving distance of the blade can be controlled more precisely, and it is also convenient for the installation of the second servo motor.

[0052] In order to be able to more precisely control the expansion amplitude of the inner support body, in this embodiment, as Figure 1 、 Figure 2 、 Figure 5 、 Figure 6 and Figure 7As shown in the figure, the third transmission mechanism includes a third transmission box 87 for driving the axial movement of the taper head pull rod and a third servo motor 86 for providing power to the third transmission box 87. The third transmission box 87 is installed on the left end of the housing 31 of the chamfering assembly. The third servo motor 86 is installed on the third transmission box 87 and provides power to the third transmission box 87. The main shaft 3 is hollow. The right end of the push rod 84 of the taper head pull rod passes through the inner hole of the main shaft 3 and is connected to the output end of the third transmission box 87. The third servo motor 86 drives the taper head pull rod to move in the left-right direction through the third transmission box 87. With such a setting, the movement distance of the taper head pull rod can be accurately controlled by the third servo motor and the third transmission box. And since the push rod passes through the inner hole of the main shaft, the coaxiality between the push taper head and the main shaft is relatively high. Furthermore, each part of the supporting end of the inner support body moves more evenly. Moreover, the hidden design of the taper head pull rod makes the overall device more compact and improves the coaxiality of the main shaft, the cutter head body and the taper head pull rod, thereby reducing the control difficulty and assembly difficulty of the device.

[0053] In order to reduce the total weight of the device, in this embodiment, as Figure 3 and Figure 4 shown, the chamfering device further includes a top plate 22 and two side plates 21. The two side plates 21 are symmetrically arranged in the front-rear direction and fixed on the workbench 2. The two side plates 21 are located inside the sliding bracket 32. Two first slide rails 25 are respectively fixed on the two side plates 21. The two first slide rails 25 are connected to the sliding bracket 32 through two first sliders. The top plate 22 is fixedly connected to the tops of the two side plates 21. And an opening 23 extending downward through the workbench is provided on the top plate 22. The opening 23 of the workbench is located below the cutter head body 4. With such a setting, the total weight of the device can be reduced. And during the chamfering process, the waste cut from the catheter by the blade can be discharged from the opening of the top plate, keeping the device clean. And the above structure can reduce the overall weight of the device.

[0054] In order to prevent the waste generated during the chamfering process from splashing, in this embodiment, a funnel-shaped collector 24 is provided at the opening 23 of the workbench. A protective cover 34 is installed on the housing 31. The cutter head body 4 is located inside the protective cover 34. The lower end of the protective cover 34 is provided with an opening. The opening of the protective cover 34 is located above the collector 24. With such a setting, the waste cut from the catheter by the blade can be blocked by the inner wall of the protective cover and slide down along the inner wall of the protective cover into the collector and then be discharged from the opening of the workbench. Further, the protective cover 34 is slidably installed on the housing in the up-down direction. This can adjust the position of the protective cover.

[0055] In this embodiment, the outer clamping assembly 9 includes two oppositely arranged clamping plates 99, and both clamping plates 99 are slidably mounted on the workbench 2. Further, in order to improve the stability of the two clamping plates and the accuracy of clamping, the outer clamping assembly 9 further includes a fourth servo motor 93, a fourth transmission case 94, a bidirectional lead screw 95, and two clamping nut seats 96. The bidirectional lead screw 95 is rotatably mounted on the workbench 2, the fourth transmission case 94 is mounted on the workbench 2, the fourth servo motor 93 is mounted on the fourth transmission case 94, and the output end of the fourth servo motor 93 is connected to the input end of the fourth transmission case 94. The output end of the fourth transmission case 94 is connected to the bidirectional lead screw 95. The bidirectional lead screw 95 has two thread segments with different helix directions, and the two clamping nut seats 96 are respectively connected to the two thread segments on the bidirectional lead screw 95. The two clamping nut seats 96 are respectively fixedly connected to the two clamping plates 99. In this way, the fourth transmission case can be a reduction gearbox, and through the above structure, the consistency and reliability of the movement of the two clamping plates can be ensured, thereby ensuring the coaxiality of the thin-walled conduit and the inner support body. Moreover, the force exerted by the clamping plates on the conduit can be controlled more precisely to ensure the integrity of the conduit.

[0056] In order to improve the stability of the movement of the clamping plates, in this embodiment, the outer clamping assembly further includes a first mounting plate 91, two second mounting plates 92, two second slide rails 97, and two second sliders 98. The first mounting plate 91 is fixed to the right end of the workbench 2 and is vertically arranged. The two second mounting plates 92 are arranged in the front-rear direction. The first mounting plate 91 is located between the two second mounting plates 92 and is fixedly connected. The right end of the workbench 2 is inserted between the two second mounting plates 92 and is fixedly connected. The fourth transmission case 94 is mounted on the first mounting plate 91 or the second mounting plate 92. The two end portions of the bidirectional lead screw 95 are respectively rotatably connected to the two second mounting plates 92. The two second slide rails 97 are arranged up and down and can extend in the front-rear direction. Two second sliders 98 are slidably mounted on any one of the second slide rails 97. The two second sliders 98 mounted on the same second slide rail 97 are respectively fixedly connected to the two clamping plates 99. In this way, the movement of the clamping plates is made more stable, and the clamping plates, nut seats, bidirectional lead screw, fourth transmission case, and fourth servo motor for clamping the outer wall of the pipe fitting can be independently assembled and then mounted on the workbench, making the chamfering device easier to assemble and repair. Further, the bidirectional lead screw 95 is located between the two second slide rails 97. The stability of the movement of the clamping plates is further improved.

[0057] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0058] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention without departing from the principles and purposes of the present invention.

Claims

1. A cutter head mechanism for chamfering aerospace ducts, characterized in that: It includes a cutter head body (4), a first mounting seat (44), a second mounting seat (45), a first adjusting member (47), a second adjusting member and a third adjusting member; One end of the cutter head body (4) is provided with a first positioning groove (41), the first positioning groove (41) extends radially, the first positioning groove (41) includes a first connecting surface (411) and a second connecting surface (412) in a relative position, the first mounting seat (44) includes a third connecting surface (441) and a fourth connecting surface (442) in a relative position, and the second mounting seat (45) includes a fifth connecting surface (451) and a sixth connecting surface (452) in a relative position; wherein, the first connecting surface (411), the third connecting surface (441), the fourth connecting surface (442) and the fifth connecting surface (451) are all inclined surfaces, the second connecting surface (412) and the sixth connecting surface (452) are flat surfaces, the first connecting surface (411) and the third connecting surface (441) are parallel to each other, the fourth connecting surface (442) and the fifth connecting surface (451) are parallel to each other, and the second connecting surface (412) and the sixth connecting surface (452) are parallel to each other; A part of the second mounting seat (45) is located in the first positioning groove (41), and the blade (5) is fixedly installed on the part of the second mounting seat (45) outside the first positioning groove (41); The first adjusting member (47) is connected to the cutter head body (4) and the second mounting seat (45), and can drive the second mounting seat (45) to move radially; The second adjusting member (48) is connected to the cutter head body (4), and one end of the second adjusting member (48) can be adjusted to extend into the first positioning groove (41) and can adjust the length of extending into the first positioning groove (41); The third adjusting member is used to connect the first mounting seat (44) and the cutter head body (4); The way to fix the position of the blade (5) is as follows: 1) Fix the blade (5) on the second mounting seat (45), and adjust the position of the second mounting seat (45) in the radial direction of the cutter head body (4) through the first adjusting member (47); 2) Adjust the length of the second adjusting member (48) extending from the cutter head body (4) into the first positioning groove (41), and change the position where the second adjusting member (48) abuts against the second mounting seat (45); 3) Drive the first mounting seat (44) to move towards the other end of the cutter head body (4) through the third adjusting member, so that the first connecting surface (411) abuts tightly against the third connecting surface (441), the fourth connecting surface (442) of the first mounting seat (44) pushes against the fifth connecting surface (451) of the second mounting seat (45), so that the second mounting seat (45) moves relative to the second connecting surface (412) and the second adjusting member (48), and makes the second connecting surface (412) of the first positioning groove (41) abut tightly against the sixth connecting surface (452) of the second mounting seat (45), and makes the second mounting seat (45) abut tightly against the second adjusting member (48), thereby completing the positioning of the blade (5); The second adjusting member (48) includes two second adjusting screws which are radially arranged and axially extended. Both of the two second adjusting screws are threadedly connected to the cutter head body (4), and both can extend into the first positioning groove (41) from the other end of the cutter head body (4). By slightly rotating the two second adjusting screws, the positions where the two second adjusting screws abut against the second mounting seat are adjusted, so as to finely adjust the inclination angle of the blade. The first positioning groove (41) includes a first positioning portion and a second positioning portion which are communicated with each other. The depth of the first positioning portion is less than the depth of the second positioning portion. The first mounting seat (44) is located in the first positioning portion, and the second mounting seat (45) is located in the second positioning portion.

2. The cutter head mechanism for chamfering aerospace ducts according to claim 1, wherein: The first adjusting member (47) includes a first adjusting screw which extends radially. The first adjusting screw is connected to the cutter head body (4) and can be threadedly connected to the second mounting seat (45).

3. The cutter head mechanism for chamfering aerospace ducts according to claim 1, characterized in that: The third adjusting member includes two third adjusting screws which are radially arranged and axially extended. Both of the two third adjusting screws are threadedly connected to the cutter head body (4) after passing through the second mounting seat (45).

4. A cutter head mechanism for chamfering aerospace ducts according to claim 1, characterized in that: A second positioning groove (453) matching the outer shape of the blade (5) is formed in the second mounting seat (45). Part of the blade (5) is located in the second positioning groove (453) and is fixedly connected to the second mounting seat (45).

5. A cutter head mechanism for chamfering aerospace ducts according to claim 1, characterized in that: The central position at one end of the cutter head body (4) is concave. Part of the second mounting seat (45) extends into the concave area of the cutter head body (4), and the blade (5) is mounted on the part of the second mounting seat (45) extending into the concave area.

6. The cutter head mechanism for chamfering aerospace ducts according to claim 1, wherein: There are a plurality of the first positioning grooves (41), and the distance between any two adjacent first positioning grooves (41) is the same.

7. A cutter head mechanism for chamfering aerospace ducts according to claim 1, characterized in that: A tailstock (43) for connecting the main shaft (3) protrudes from the other end of the cutter head body (4).

8. A chamfering device for aerospace ducts, characterized in that: It includes a cutter head mechanism for chamfering an aerospace conduit according to any one of the above claims 1-7.

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