Pre-buried hole chamfering forming machining device

Abstract

The invention belongs to the technical field of chamfer grinding machining, and particularly discloses an embedded hole chamfer forming machining device which comprises a pressing and fixing induction mechanism, a dual-mode sequence gear shifting mechanism and a rotary chamfering mechanism. The bottom pressurizing assembly is located in the fixed supporting assembly. Through linkage of the pressing and fixing induction mechanism and the dual-mode sequence gear shifting mechanism and one-time driving of the driving motor, on one hand, position adjustment and fixing of the fixing and supporting assembly can be completed firstly, and on the other hand, the rotating chamfering mechanism can be automatically driven to move to conduct chamfering grinding; in order to solve the problem that chamfering of the large embedded hole is difficult, the rotary chamfering mechanism is provided, a plurality of small conical chamfering grinding wheels which are symmetrically arranged rotate and revolve at the same time, and chamfering machining of the embedded hole can also be completed.

Description

Technical Field

[0001] The invention belongs to the technical field of chamfering and grinding processing, and specifically refers to a pre-buried hole chamfering forming processing device. Background Art

[0002] The wind turbine nacelle is the protective shell of the wind turbine. Its reliability determines the stability and service life of the wind turbine. During the production and processing of the nacelle and the nacelle, embedded holes for filling with other parts will be reserved; For chamfering small embedded holes, the common operating procedure is to install a conical, drill-like chamfering grinding wheel on a pistol drill or machine tool, and gradually invade the embedded hole during high-speed rotation to achieve the technical effect of chamfering the edge.

[0003] However, for large parts such as wind turbine nacelles, the diameter and depth of the embedded holes are relatively large. If the above-mentioned chamfering process is still used, a very large chamfering grinding wheel is required, which is not only large in size and weight, but also has almost no corresponding machine tools that can install grinding wheels of this size.

[0004] More importantly, the heavier the rotating parts are, the greater the moment of inertia during rotation, which creates a huge burden on supporting structures such as frames. Summary of the invention

[0005] In view of the above situation, in order to overcome the defects of the prior art, the present invention proposes a pre-embedded hole chamfering forming processing device with a smaller volume, which uses the pre-embedded hole itself as a fixed support position and can perform edge processing on large pre-embedded holes; the present invention, through the linkage of the clamping and fixing induction mechanism and the dual-mode sequence shifting mechanism, can first complete the position adjustment and fixation of the fixed support component through a single drive of the driving motor, and can also automatically drive the rotary chamfering mechanism to move for chamfering grinding; in order to solve the problem of difficult chamfering of large pre-embedded holes, the present invention proposes a rotary chamfering mechanism, and a plurality of symmetrically arranged small conical chamfering grinding wheels, which rotate and revolve at the same time, and can also complete the chamfering processing of the embedded holes.

[0006] The technical solution adopted by the present invention is as follows: The present invention proposes a pre-buried hole chamfering forming processing device, including a clamping and fixing sensing mechanism, a dual-mode sequence shifting mechanism and a rotary chamfering mechanism, the clamping and fixing sensing mechanism includes a fixed support assembly and a bottom boost assembly, and the bottom boost assembly is located in the fixed support assembly.

[0007] Furthermore, the fixed support assembly includes a fixed bracket, an inner hole support sleeve, a bottom telescopic leg and a telescopic limit bracket. The fixed bracket is against the target plane through the leg. The fixed bracket is provided with a center sleeve. The telescopic limit bracket is arranged on one side of the fixed bracket. The inner hole support sleeve is fixedly connected to the other side of the fixed bracket. The inner hole support sleeve is annularly evenly provided with a bottom telescopic sleeve, and the bottom telescopic leg is snap-fitted and slidably arranged in the bottom telescopic sleeve.

[0008] Through the continuously rotating driving motor, the pressure inside the closed chamber composed of the inner hole support sleeve and the booster piston can be increased at the initial stage of startup, thereby driving the bottom telescopic legs to extend. Rubber pads are provided at the ends of the bottom telescopic legs. Through the extension and squeezing of the bottom telescopic legs, on the one hand, the fixation between the inner hole support sleeve and the hole wall can be completed. On the other hand, when each group of bottom telescopic legs are fully extended, the inner hole support sleeve will be automatically adjusted to a coaxial position with the hole wall, thereby completing the positioning before rotary chamfering.

[0009] Preferably, the bottom boosting assembly includes a boosting piston, a boosting screw, a boosting nut and a hydraulic pipeline, the boosting piston is slidably arranged in an inner hole support sleeve, the boosting piston is fixedly connected to the boosting screw, the boosting nut is rotatably arranged in a center sleeve, the boosting screw and the boosting nut are threadedly connected, the top end of the boosting screw is arranged on a telescopic limit bracket, nut coupling teeth are evenly distributed in a ring shape below the boosting nut, and one end of the hydraulic pipeline is arranged on the boosting piston.

[0010] When the liquid pressure between the inner hole support sleeve and the boost piston reaches a certain level, that is, when it can overcome the elastic force of the boost return spring, the gear shift can be promoted. Through this design, when facing embedded holes with different inner diameters or unknown inner diameters, the fixed support assembly can achieve the same extrusion force (firmness) fixation.

[0011] Furthermore, the dual-mode sequential shifting mechanism includes a main drive assembly, a shift drive assembly and a shift execution assembly, wherein the main drive assembly is arranged on a fixed support assembly, the shift drive assembly is arranged in the fixed support assembly, and the shift execution assembly is arranged on the fixed support assembly.

[0012] Through the automatic shifting mechanism of the dual-mode sequential shifting mechanism, when only the driving gear is started, after the position of the fixed support component is fixed, it can automatically switch to the mode of driving the rotary chamfering mechanism and then start chamfering; because the motor only needs to be started once, and when placing the fixed support component, only the approximate position is required without precise positioning, the processing efficiency of chamfering large embedded holes can be greatly improved.

[0013] Preferably, the main driving assembly comprises a driving motor and a driving gear, the driving motor is fixedly connected to a fixed bracket, and the driving gear is arranged on an output shaft of the driving motor.

[0014] As a further preferred embodiment of the present invention, the gear shift drive assembly includes an annular piston chamber, an annular piston body, a spring base and a boost return spring, the annular piston chamber is fixedly connected to the interior of the inner hole support sleeve, the annular piston body is snap-fitted and slidably arranged in the annular piston chamber, the annular piston body is provided with a support rod, the end of the support rod is provided with a rotating connecting ring, the other end of the hydraulic pipeline is provided on the annular piston chamber, the spring base is fixedly connected to the inner wall of the inner hole support sleeve, and the boost return spring is arranged between the spring base and the annular piston body.

[0015] Preferably, the shift execution assembly includes a lifting type shift plate, a polished gear ring support frame and a polished transmission gear ring, the lifting type shift plate is rotatably arranged on the rotating connecting ring, the polished gear ring support frame is fixedly connected to the inner wall of the inner hole support sleeve, the polished transmission gear ring is rotatably arranged on the polished gear ring support frame, the polished transmission gear ring is annularly evenly provided with gear ring combining teeth, one side of the lifting type shift plate is annularly evenly provided with upper combining teeth matching with the nut combining teeth, the other side of the lifting type shift plate is annularly evenly provided with lower combining teeth matching with the gear ring combining teeth, the lifting type shift plate is also provided with an outer gear ring part, and the outer gear ring part and the driving gear maintain meshing transmission.

[0016] When the annular piston body is in the lifting type, it can lift the lifting shift plate by rotating the connecting ring, thereby changing the meshing transmission mode of the lifting shift plate. When the hydraulic pressure is small, the bottom telescopic legs can be driven to extend through the snap connection between the lifting shift plate and the boost nut, and then the hydraulic pressure is continuously increased; after the hydraulic pressure reaches a certain level, the rotary chamfering mechanism is driven through the snap connection between the lifting shift plate and the grinding transmission gear ring.

[0017] Furthermore, the rotary chamfering mechanism includes a revolving transmission assembly, a self-rotating transmission assembly and a pre-tightening grinding assembly, the revolving transmission assembly is rotatably arranged on the fixed support assembly, the self-rotating transmission assembly is arranged on the revolving transmission assembly, and the pre-tightening grinding assembly is arranged on the self-rotating transmission assembly.

[0018] When the grinding transmission gear ring rotates, the rotary chamfering mechanism can, on the one hand, carry the conical chamfering grinding wheel to orbit along the chamfered part through the rotation of the orbiting bracket; at the same time, the meshing transmission of the fixed gear ring and the hollow rotating shaft can make the conical chamfering grinding wheel rotate while orbiting, thereby achieving the technical effect of grinding and chamfering the edge and corner positions.

[0019] Preferably, the revolution transmission assembly includes a revolution bracket, an idler bracket, an idler body and a revolution gear ring, the revolution bracket consists of a bracket annular portion and symmetrically arranged bracket extension portions, the bracket annular portion is rotatably arranged on the outside of the inner hole support sleeve, the revolution gear ring is fixed to the revolution bracket, the idler bracket is fixed to the window portion of the inner hole support sleeve, the idler body is rotatably arranged in the idler bracket, the idler body is meshed with the revolution gear ring, and the idler body is meshed with the grinding transmission gear ring.

[0020] As a further preferred embodiment of the present invention, the self-rotating transmission assembly includes a fixed gear ring, a hollow rotating shaft and a self-rotating gear, the fixed gear ring is fixedly connected to the outside of the inner hole supporting sleeve, the hollow rotating shaft is rotatably arranged in the circular hole of the extending part of the bracket, the hollow rotating shaft is provided with a through polygonal slide groove, the self-rotating gear is fixedly connected to the end of the hollow rotating shaft, and the self-rotating gear and the fixed gear ring are meshed for transmission.

[0021] Preferably, the pre-tightening grinding assembly includes a polygonal telescopic rod, a synchronous linkage lifting rod, a self-rotating pressure-boosting spring and a conical chamfering grinding wheel. The polygonal telescopic rod is slidably arranged in a polygonal slide groove, and the two polygonal telescopic rods are both rotatably arranged in the synchronous linkage lifting rod. The synchronous linkage lifting rod can realize the synchronous lifting of the two polygonal telescopic rods. The self-rotating pressure-boosting spring is arranged between the hollow rotating shaft and the polygonal telescopic rod, and the conical chamfering grinding wheel is detachably arranged at the end of the polygonal telescopic rod.

[0022] The self-rotating pressure-boosting spring can continuously apply extrusion force toward the workpiece like the conical chamfering grinding wheel, thereby continuously deepening the chamfering depth, and the various conical chamfering grinding wheels can be synchronously lowered through the synchronous linkage lifting rod.

[0023] The beneficial effects achieved by the present invention using the above structure are as follows: (1) Through the continuous rotation of the driving motor, the pressure inside the closed chamber composed of the inner hole support sleeve and the booster piston can be increased at the initial stage of startup, thereby driving the bottom telescopic legs to extend. A rubber pad is provided at the end of the bottom telescopic legs. Through the extension and squeezing of the bottom telescopic legs, on the one hand, the inner hole support sleeve and the hole wall can be fixed. On the other hand, when each group of bottom telescopic legs are fully extended, the inner hole support sleeve will be automatically adjusted to a coaxial position with the hole wall, thereby completing the positioning before the rotation chamfering.

[0024] (2) When the liquid pressure between the inner hole support sleeve and the boost piston reaches a certain level, that is, when it can overcome the elastic force of the boost return spring, the gear shift can be pushed. Through this design, when facing embedded holes with different inner diameters or unknown inner diameters, the fixed support assembly can achieve the same extrusion force (firmness) fixation.

[0025] (3) Through the automatic shifting mechanism of the dual-mode sequential shifting mechanism, when only the driving gear is started, after the position of the fixed support assembly is fixed, it can automatically switch to the mode of driving the rotary chamfering mechanism and then start chamfering; since the motor only needs to be started once, and when placing the fixed support assembly, only the approximate position is required and precise positioning is not required, the processing efficiency of chamfering large embedded holes can be greatly improved.

[0026] (4) When the annular piston body is in the lifting type, it can lift the lifting shift plate by rotating the connecting ring, thereby changing the meshing transmission mode of the lifting shift plate. When the hydraulic pressure is relatively small, the lifting shift plate and the boost nut are engaged to drive the bottom telescopic legs to extend, and then the hydraulic pressure is continuously increased. When the hydraulic pressure reaches a certain level, the rotary chamfering mechanism is driven by the engagement connection between the lifting shift plate and the grinding transmission gear ring.

[0027] (5) When the grinding transmission gear ring rotates, the rotary chamfering mechanism can, on the one hand, drive the conical chamfering grinding wheel to revolve along the chamfered part through the rotation of the revolving bracket; at the same time, the conical chamfering grinding wheel can also rotate while revolving through the meshing transmission of the fixed gear ring and the hollow shaft, thereby achieving the technical effect of grinding and chamfering the edge and corner positions.

[0028] (6) The self-rotating pressure-boosting spring can continuously apply extrusion pressure toward the workpiece like a conical chamfering grinding wheel, thereby continuously deepening the depth of the chamfering. Through the synchronous linkage lifting rod, each conical chamfering grinding wheel can be lowered synchronously. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A three-dimensional diagram of a pre-embedded hole chamfering forming processing device proposed by the present invention; Figure 2 This is a front view of a pre-embedded hole chamfering forming processing device proposed by the present invention; Figure 3 It is a left view of a pre-embedded hole chamfering forming processing device proposed by the present invention; Figure 4 for Figure 2 A cross-sectional view along the cutting line AA; Figure 5 for Figure 3 A cross-sectional view along the cutting line BB; Figure 6 for Figure 4 A cross-sectional view along the cutting line CC; Figure 7 for Figure 5 A cross-sectional view along the cutting line DD; Figure 8This is a schematic diagram of the exploded structure of a pre-buried hole chamfering forming processing device proposed by the present invention; Fig. 9 for Figure 5 A partial enlarged view of point Ⅰ in the middle; Fig.10 for Figure 5 A partial enlarged view of the middle II; Fig.11 for Figure 4 A partial enlarged view of the middle part III; Fig.12 for Figure 8 A partial enlarged view of point IV in the middle.

[0030] Among them, 1. Compression and fixing induction mechanism, 2. Dual-mode sequence shifting mechanism, 3. Rotary chamfering mechanism, 4. Fixed support assembly, 5. Bottom boost assembly, 6. Fixed bracket, 7. Inner hole support sleeve, 8. Bottom telescopic support leg, 9. Telescopic limit bracket, 10. Booster piston, 11. Booster screw, 12. Booster nut, 13. Hydraulic pipeline, 14. Center sleeve, 15. Bottom telescopic sleeve, 16. Nut coupling teeth, 17. Main drive assembly, 18. Shift drive assembly, 19. Shift execution assembly, 20. Drive motor, 21. Drive gear, 22. Annular piston chamber, 23. Annular piston body, 24. Spring base, 25. Boost reset spring, 26. Lifting shift plate, 27, grinding gear ring support frame, 28, grinding transmission gear ring, 29, support rod, 30, rotating connecting ring, 31, upper combining tooth, 32, lower combining tooth, 33, outer gear ring part, 34, revolution transmission assembly, 35, rotation transmission assembly, 36, pre-tightening grinding assembly, 37, revolution bracket, 38, idler bracket, 39, idler body, 40, revolution gear ring, 41, fixed gear ring, 42, hollow shaft, 43, self-rotating gear, 44, polygonal telescopic rod, 45, synchronous linkage lifting rod, 46, self-rotating booster spring, 47, conical chamfered grinding wheel, 48, bracket annular part, 49, bracket extension part, 50, polygonal slide groove, 51, gear ring combining tooth.

[0031] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0033] In the description of the present invention, it should be understood that terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “top”, “bottom”, “inside” and “outside” indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0034] like Figure 1 to Figure 12 As shown, the present invention proposes a pre-buried hole chamfering forming processing device, including a clamping and fixing sensing mechanism 1, a dual-mode sequence shifting mechanism 2 and a rotary chamfering mechanism 3, the clamping and fixing sensing mechanism 1 includes a fixed support component 4 and a bottom boost component 5, and the bottom boost component 5 is located in the fixed support component 4.

[0035] The fixed support assembly 4 includes a fixed bracket 6, an inner hole support sleeve 7, a bottom telescopic leg 8 and a telescopic limit bracket 9. The fixed bracket 6 is against the target plane through the legs. A center sleeve 14 is provided on the fixed bracket 6. The telescopic limit bracket 9 is arranged on one side of the fixed bracket 6. The inner hole support sleeve 7 is fixedly connected to the other side of the fixed bracket 6. Bottom telescopic sleeves 15 are evenly distributed in an annular manner on the inner hole support sleeve 7. The bottom telescopic leg 8 is snap-fitted and slidably arranged in the bottom telescopic sleeve 15.

[0036] By continuously rotating the driving motor 20, the pressure inside the closed chamber composed of the inner hole support sleeve 7 and the booster piston 10 can be increased at the initial stage of startup, thereby driving the bottom telescopic legs 8 to extend. Rubber pads are provided at the ends of the bottom telescopic legs 8. Through the extension and squeezing of the bottom telescopic legs 8, on the one hand, the fixation between the inner hole support sleeve 7 and the hole wall can be completed. On the other hand, when each group of bottom telescopic legs 8 are fully extended, the inner hole support sleeve 7 will be automatically adjusted to a position coaxial with the hole wall, thereby completing the positioning before rotary chamfering.

[0037] The bottom boost assembly 5 includes a boost piston 10, a boost screw 11, a boost nut 12 and a hydraulic pipeline 13. The boost piston 10 is slidably engaged in the inner hole support sleeve 7, the boost piston 10 is fixed to the boost screw 11, the boost nut 12 is rotatably arranged in the center sleeve 14, the boost screw 11 and the boost nut 12 are threadedly connected, the top end of the boost screw 11 is arranged on the telescopic limit bracket 9, and nut coupling teeth 16 are evenly distributed in an annular shape below the boost nut 12. One end of the hydraulic pipeline 13 is arranged on the boost piston 10.

[0038] When the liquid pressure between the inner hole support sleeve 7 and the boost piston 10 reaches a certain level, that is, when it can overcome the elastic force of the boost return spring 25, the gear shift can be promoted. Through this design, when facing embedded holes with different inner diameters or unknown inner diameters, the fixed support component 4 can achieve the same extrusion force (firmness) fixation.

[0039] The rotary chamfering mechanism 3 includes a revolving transmission assembly 34 , a self-rotating transmission assembly 35 and a pre-tightening grinding assembly 36 . The revolving transmission assembly 34 is rotatably arranged on the fixed support assembly 4 , the self-rotating transmission assembly 35 is arranged on the revolving transmission assembly 34 , and the pre-tightening grinding assembly 36 is arranged on the self-rotating transmission assembly 35 .

[0040] When the grinding transmission ring gear 28 rotates, the rotary chamfering mechanism 3 can, on the one hand, carry the conical chamfering grinding wheel 47 to revolve along the chamfered portion through the rotation of the revolving bracket 37; at the same time, the conical chamfering grinding wheel 47 can also rotate while revolving through the meshing transmission of the fixed ring gear 41 and the hollow rotating shaft 42, thereby achieving the technical effect of grinding and chamfering the edge and corner positions.

[0041] The revolving transmission assembly 34 includes a revolving bracket 37, an idler bracket 38, an idler body 39 and a revolving gear ring 40. The revolving bracket 37 is composed of a bracket annular portion 48 and a symmetrically arranged bracket extension portion 49. The bracket annular portion 48 is rotatably arranged on the outside of the inner hole support sleeve 7. The revolving gear ring 40 is fixedly connected to the revolving bracket 37. The idler bracket 38 is fixedly connected to the window portion of the inner hole support sleeve 7. The idler body 39 is rotatably arranged in the idler bracket 38. The idler body 39 is meshed with the revolving gear ring 40, and the idler body 39 is meshed with the grinding transmission gear ring 28.

[0042] The self-rotating transmission assembly 35 includes a fixed gear ring 41, a hollow rotating shaft 42 and a self-rotating gear 43. The fixed gear ring 41 is fixedly connected to the outside of the inner hole support sleeve 7. The hollow rotating shaft 42 is rotatably arranged in the circular hole of the bracket extension part 49. A through polygonal slide groove 50 is provided on the hollow rotating shaft 42. The self-rotating gear 43 is fixedly connected to the end of the hollow rotating shaft 42. The self-rotating gear 43 and the fixed gear ring 41 are meshed for transmission.

[0043] The pre-tightening grinding assembly 36 includes a polygonal telescopic rod 44, a synchronous linkage lifting rod 45, a self-rotating pressure-boosting spring 46 and a conical chamfering grinding wheel 47. The polygonal telescopic rod 44 is slidably arranged in the polygonal slide groove 50. The two polygonal telescopic rods 44 are both rotatably arranged in the synchronous linkage lifting rod 45. The synchronous linkage lifting rod 45 can realize the synchronous lifting of the two polygonal telescopic rods 44. The self-rotating pressure-boosting spring 46 is arranged between the hollow rotating shaft 42 and the polygonal telescopic rod 44. The conical chamfering grinding wheel 47 is detachably arranged at the end of the polygonal telescopic rod 44.

[0044] The self-rotating pressure-boosting spring 46 can continuously apply a squeezing force toward the workpiece like the conical chamfering grinding wheel 47, thereby continuously deepening the chamfering depth, and the synchronous linkage lifting rod 45 can make each conical chamfering grinding wheel 47 descend synchronously.

[0045] The dual-mode sequential shifting mechanism 2 includes a main drive assembly 17 , a shift drive assembly 18 and a shift execution assembly 19 . The main drive assembly 17 is arranged on the fixed support assembly 4 , the shift drive assembly 18 is arranged in the fixed support assembly 4 , and the shift execution assembly 19 is arranged on the fixed support assembly 4 .

[0046] Through the automatic shifting mechanism of the dual-mode sequential shifting mechanism 2, when only the driving gear 21 is started, after the position of the fixed support component 4 is fixed, it can automatically switch to the mode of driving the rotary chamfering mechanism 3 and then start chamfering; since the motor only needs to be started once, and when placing the fixed support component 4, only a rough position placement is required without precise positioning, the processing efficiency of chamfering large embedded holes can be greatly improved.

[0047] The main driving assembly 17 includes a driving motor 20 and a driving gear 21 . The driving motor 20 is fixedly connected to the fixing bracket 6 , and the driving gear 21 is disposed on the output shaft of the driving motor 20 .

[0048] The shift drive assembly 18 includes an annular piston chamber 22, an annular piston body 23, a spring base 24 and a boost return spring 25. The annular piston chamber 22 is fixedly connected to the interior of the inner hole support sleeve 7. The annular piston body 23 is slidably arranged in the annular piston chamber 22. A support rod 29 is provided on the annular piston body 23. A rotating connecting ring 30 is provided at the end of the support rod 29. The other end of the hydraulic pipeline 13 is arranged on the annular piston chamber 22. The spring base 24 is fixedly connected to the inner wall of the inner hole support sleeve 7. The boost return spring 25 is arranged between the spring base 24 and the annular piston body 23.

[0049] The shift execution assembly 19 includes a lifting shift plate 26, a polished gear ring support frame 27 and a polished transmission gear ring 28. The lifting shift plate 26 is rotatably arranged on the rotating connecting ring 30, the polished gear ring support frame 27 is fixedly connected to the inner wall of the inner hole support sleeve 7, and the polished transmission gear ring 28 is rotatably arranged on the polished gear ring support frame 27. The polished transmission gear ring 28 is annularly evenly provided with gear ring combining teeth 51. One side of the lifting shift plate 26 is annularly evenly provided with upper combining teeth 31 matching the nut combining teeth 16, and the other side of the lifting shift plate 26 is annularly evenly provided with lower combining teeth 32 matching the gear ring combining teeth 51. The lifting shift plate 26 is also provided with an outer gear ring portion 33, and the outer gear ring portion 33 and the driving gear 21 maintain meshing transmission.

[0050] When the annular piston body 23 is in the lifting position, it can lift the lifting shift plate 26 by rotating the connecting ring 30, thereby changing the meshing transmission mode of the lifting shift plate 26. When the hydraulic pressure is relatively small, the lifting shift plate 26 and the boost nut 12 are engaged to drive the bottom telescopic legs 8 to extend, and then continuously increase the hydraulic pressure. After the hydraulic pressure reaches a certain level, the rotary chamfering mechanism 3 is driven through the engagement connection between the lifting shift plate 26 and the grinding transmission gear ring 28.

[0051] When in use, the user first needs to put the inner hole support sleeve 7 into the embedded hole of the cabin cover, and use the legs of the fixed bracket 6 to support the plane. At this time, the inner hole support sleeve 7 can be placed roughly in the center of the embedded hole; Then, the driving motor 20 is started, and the driving gear 21 rotates with the lifting shift plate 26. In the initial state, the lifting shift plate 26 can rotate with the booster nut 12 through the combination of the upper coupling teeth 31 and the nut coupling teeth 16. When the booster nut 12 rotates, it can axially push the booster screw 11. The boost screw 11 brings the boost piston 10 closer to the end of the inner hole support sleeve 7. During this process, the bottom telescopic legs 8 will gradually extend. When the bottom telescopic legs 8 are against the inner wall of the embedded hole, the internal pressure of the chamber composed of the inner hole support sleeve 7 and the boost piston 10 will gradually increase, and at the same time, the pressure between the bottom telescopic legs 8 and the hole wall will also gradually increase; on the one hand, the inner hole support sleeve 7 can be firmly fixed on the hole wall, and on the other hand, the synchronous extension characteristic of the bottom telescopic legs 8 can be used to adjust the position of the inner hole support sleeve 7, so that it is finally fixed in a position coaxial with the embedded hole.

[0052] If the inner hole support sleeve 7 and the embedded hole are not coaxial, each group of bottom telescopic legs 8 will not be perpendicular to the hole wall after being extended (this state is unstable). Therefore, the bottom telescopic legs 8 will adjust the position of the inner hole support sleeve 7 when extending; by setting springs of the same specification between the bottom telescopic sleeve 15 and the bottom telescopic legs 8, the synchronization of the bottom telescopic legs 8 when extending and the position adjustment ability of the compression and fixing sensing mechanism 1 can be enhanced.

[0053] During this process, the liquid between the boost piston 10 and the inner hole support sleeve 7 will be transported to the annular piston cavity 22 through the hydraulic pipe 13, so that the annular piston body 23 overcomes the elastic force of the boost return spring 25 and slides away from the fixed bracket 6; the annular piston body 23 will slide axially with the lifting and lowering shift plate 26 by rotating the connecting ring 30, and when the hydraulic pressure increases to a certain extent, the upper coupling teeth 31 will be disengaged from the nut coupling teeth 16, and the lower coupling teeth 32 will be coupled to the gear ring coupling teeth 51; thereafter, the boost nut 12 stops rotating (due to the self-locking of the thread, the axial sliding of the boost screw 11 cannot push the boost nut 12 to rotate), and the grinding transmission gear ring 28 rotates with the lifting and lowering shift plate 26; When the grinding transmission gear ring 28 rotates, it drives the revolving gear ring 40 and the revolving bracket 37 to rotate around the center of the inner hole support sleeve 7 through the idler wheel body 39. Due to the meshing transmission between the fixed gear ring 41 and the self-rotating gear 43, when the revolving bracket 37 rotates, the hollow rotating shaft 42 and the self-rotating gear 43 will also rotate around the center of the hollow rotating shaft 42, and rotate with the conical chamfered grinding wheel 47 through the polygonal telescopic rod 44. Since the number of teeth of the fixed gear ring 41 and the self-rotating gear 43 is quite different, and the revolving direction of the revolving bracket 37 is opposite to the self-rotating direction of the conical chamfered grinding wheel 47, the relative speed between the conical chamfered grinding wheel 47 and the workpiece is relatively large, which is sufficient to achieve the technical purpose of rotational grinding.

[0054] Due to the existence of the self-rotating pressure-boosting spring 46, the conical chamfering grinding wheel 47 will continue to be subjected to the extrusion force toward the workpiece, thereby continuously increasing the chamfering depth during the grinding process, and each conical chamfering grinding wheel 47 can be synchronously lowered through the synchronous linkage lifting rod 45.

[0055] During the grinding and chamfering process, due to the existence of the boost return spring 25, the annular piston body 23 always has a tendency to descend and return, but since the rotation direction of the driving motor 20 remains unchanged, even if the upper engaging teeth 31 and the nut engaging teeth 16 have some short engagement or semi-engagement time, the boost screw 11 is pushed downward to increase pressure, so the upper engaging teeth 31 and the nut engaging teeth 16 will be separated immediately; After the grinding process is completed, the drive motor 20 is driven to rotate in the opposite direction for a period of time. At this time, under the elastic force of the boost reset spring 25, the lifting shift plate 26 will reunite with the boost nut 12, and the bottom telescopic leg 8 will be retracted and reset through the rise of the boost screw 11 to release the position fixation.

[0056] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0057] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. A pre-embedded hole chamfering forming processing device, characterized in that: It comprises a pressing and fixing sensing mechanism (1), a dual-mode sequential shifting mechanism (2) and a rotary chamfering mechanism (3), wherein the pressing and fixing sensing mechanism (1) comprises a fixed support component (4) and a bottom pressurizing component (5), and the bottom pressurizing component (5) is located in the fixed support component (4); The dual-mode sequential shift mechanism (2) comprises a main drive assembly (17), a shift drive assembly (18) and a shift execution assembly (19), wherein the main drive assembly (17) is arranged on a fixed support assembly (4), the shift drive assembly (18) is arranged in the fixed support assembly (4), and the shift execution assembly (19) is arranged on the fixed support assembly (4); The rotary chamfering mechanism (3) comprises a revolution transmission assembly (34), a rotation transmission assembly (35) and a pre-tightening grinding assembly (36); the revolution transmission assembly (34) is rotatably mounted on the fixed support assembly (4); the rotation transmission assembly (35) is mounted on the revolution transmission assembly (34); and the pre-tightening grinding assembly (36) is mounted on the rotation transmission assembly (35).

2. The embedded hole chamfering forming processing device according to claim 1, characterized in that: The fixed support assembly (4) comprises a fixed support (6), an inner hole support sleeve (7), a bottom telescopic support leg (8) and a telescopic limit support (9); the fixed support (6) is supported against a target plane through the support leg; a central sleeve (14) is provided on the fixed support (6); the telescopic limit support (9) is arranged on one side of the fixed support (6); the inner hole support sleeve (7) is fixedly connected to the other side of the fixed support (6); bottom telescopic sleeves (15) are evenly distributed in an annular manner on the inner hole support sleeve (7); and the bottom telescopic support leg (8) is slidably arranged in the bottom telescopic sleeve (15) in a snap-fitting manner.

3. The embedded hole chamfering forming processing device according to claim 2, characterized in that: The bottom boosting assembly (5) comprises a boosting piston (10), a boosting screw (11), a boosting nut (12) and a hydraulic pipeline (13); the boosting piston (10) is slidably engaged in an inner hole support sleeve (7); the boosting piston (10) is fixedly connected to the boosting screw (11); the boosting nut (12) is rotatably arranged in a center sleeve (14); the boosting screw (11) and the boosting nut (12) are threadedly connected; the top end of the boosting screw (11) is arranged on a telescopic limit bracket (9); nut coupling teeth (16) are evenly distributed in an annular shape below the boosting nut (12); and one end of the hydraulic pipeline (13) is arranged on the boosting piston (10).

4. The embedded hole chamfering forming processing device according to claim 3 is characterized in that: The main drive assembly (17) comprises a drive motor (20) and a drive gear (21); the drive motor (20) is fixedly connected to a fixed bracket (6); and the drive gear (21) is arranged on an output shaft of the drive motor (20).

5. The embedded hole chamfering forming processing device according to claim 4, characterized in that: The shift drive assembly (18) comprises an annular piston chamber (22), an annular piston body (23), a spring base (24) and a boost return spring (25); the annular piston chamber (22) is fixedly connected to the interior of an inner hole support sleeve (7); the annular piston body (23) is slidably arranged in the annular piston chamber (22); a support rod (29) is arranged on the annular piston body (23); a rotating connecting ring (30) is arranged at the end of the support rod (29); the other end of the hydraulic pipeline (13) is arranged on the annular piston chamber (22); the spring base (24) is fixedly connected to the inner wall of the inner hole support sleeve (7); and the boost return spring (25) is arranged between the spring base (24) and the annular piston body (23).

6. The embedded hole chamfering forming processing device according to claim 5, characterized in that: The shift actuator assembly (19) comprises a lifting shift plate (26), a grinding gear ring support frame (27) and a grinding transmission gear ring (28); the lifting shift plate (26) is rotatably mounted on a rotating connection ring (30); the grinding gear ring support frame (27) is fixedly connected to the inner wall of an inner hole support sleeve (7); the grinding transmission gear ring (28) is rotatably mounted on the grinding gear ring support frame (27); gear ring coupling teeth (51) are evenly distributed in an annular pattern on the grinding transmission gear ring (28); upper coupling teeth (31) matching the nut coupling teeth (16) are evenly distributed in an annular pattern on one side of the lifting shift plate (26); lower coupling teeth (32) matching the gear ring coupling teeth (51) are evenly distributed in an annular pattern on the other side of the lifting shift plate (26); an outer gear ring portion (33) is also provided on the lifting shift plate (26); and meshing transmission is maintained between the outer gear ring portion (33) and the driving gear (21).

7. The embedded hole chamfering forming processing device according to claim 6, characterized in that: The revolving transmission assembly (34) comprises a revolving bracket (37), an idler bracket (38), an idler body (39) and a revolving gear ring (40). The revolving bracket (37) comprises a bracket annular portion (48) and a symmetrically arranged bracket extension portion (49). The bracket annular portion (48) is rotatably arranged outside the inner hole support sleeve (7). The revolving gear ring (40) is fixedly connected to the revolving bracket (37). The idler bracket (38) is fixedly connected to a window portion of the inner hole support sleeve (7). The idler body (39) is rotatably arranged in the idler bracket (38). The idler body (39) and the revolving gear ring (40) are meshed. The idler body (39) and the grinding transmission gear ring (28) are meshed.

8. The embedded hole chamfering forming processing device according to claim 7, characterized in that: The self-rotation transmission assembly (35) comprises a fixed gear ring (41), a hollow rotating shaft (42) and a self-rotation gear (43); the fixed gear ring (41) is fixedly connected to the outside of the inner hole support sleeve (7); the hollow rotating shaft (42) is rotatably arranged in the circular hole of the bracket extension portion (49); a through polygonal sliding groove (50) is provided on the hollow rotating shaft (42); the self-rotation gear (43) is fixedly connected to the end of the hollow rotating shaft (42); and the self-rotation gear (43) and the fixed gear ring (41) are meshed for transmission.

9. The embedded hole chamfering forming processing device according to claim 8, characterized in that: The preload grinding assembly (36) comprises a polygonal telescopic rod (44), a synchronous linkage lifting rod (45), a self-rotating pressure-boosting spring (46) and a conical chamfering grinding wheel (47); the polygonal telescopic rod (44) is slidably arranged in a polygonal slide groove (50); the two polygonal telescopic rods (44) are both rotatably arranged in the synchronous linkage lifting rod (45); the two polygonal telescopic rods (44) can be raised and lowered synchronously by the synchronous linkage lifting rod (45); the self-rotating pressure-boosting spring (46) is arranged between the hollow rotating shaft (42) and the polygonal telescopic rod (44); and the conical chamfering grinding wheel (47) is detachably arranged at the end of the polygonal telescopic rod (44).

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