An integrated machine for grinding and punching valve seats of automobile fresh air system

Abstract

The invention discloses an integrated machine for grinding and punching valve seats of automobile fresh air system, relates to the technical field of automobile fresh air system valve seat processing equipment, and aims to solve the technical problem of low efficiency of grinding and punching valve seats of automobile fresh air system, comprising a punching machine body, the punching machine body comprising a lifting mechanism, a mounting seat is fixedly arranged at the movable end of the lifting mechanism, and a drilling and grinding structure is arranged on the mounting seat; the drilling and grinding structure comprises a servo motor and a drill bit, the servo motor is fixedly arranged at the top of the mounting seat, the drill bit is rotatably arranged at the bottom of the mounting seat, a mounting hole is opened at the top of the drill bit, a driving mechanism is arranged in the mounting hole, a plurality of expansion and contraction slide grooves are opened in the annular equidistant structure on the surface of the drill bit, and a grinding assembly is slidably arranged in the expansion and contraction slide groove; the driving mechanism comprises a linkage A part and a linkage B part, the top of the linkage A part passes through the mounting seat and is fixedly connected to the output shaft of the servo motor, and the bottom of the linkage A part is slidably connected to the lifting part. The invention has the advantage of solving the problem of high efficiency of grinding and punching valve seats of automobile fresh air system.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile fresh air system valve seat processing equipment, and more specifically, to an automobile fresh air system valve seat grinding and punching integrated machine. Background Art

[0002] The automobile fresh air system is a system that realizes the exchange of indoor and outdoor air through special equipment. It is mainly composed of an air supply system and an exhaust system. The exchange and circulation of indoor and outdoor air are realized through these two systems. The fresh air system sucks the fresh air outside the car into the system through the suction of the fresh air fan. In this process, the air will go through a series of filtering and purification treatments to remove harmful substances such as dust and bacteria to ensure that the air sent into the car is clean and fresh. The dirty air in the car is discharged out of the car through the exhaust fan. In this process, the exhaust fan guides the air in the car to the outside through the pipe to realize the discharge of indoor air and ensure the air circulation and circulation in the car. The system will automatically adjust the amount of air supply and exhaust through the pipe regulating valve according to the air quality, humidity, temperature and other factors in the car to keep the air quality in the car in the best state.

[0003] The valve seat is an important part of the pipeline regulating valve. The production of the valve seat requires drilling and grinding. The grinding of the inner hole of the valve seat directly affects the matching of the seat surface between the valve core and the valve seat, which directly affects the performance of the entire pipeline regulating valve. Therefore, grinding is an indispensable link in the production of valve seats.

[0004] The existing automobile fresh air system valve seat is usually drilled with a drill, and then the inner hole of the valve seat is ground with a grinder. In this process, a lot of time is wasted in the loading, unloading and transportation of the valve seat between the two devices, resulting in low efficiency in grinding and drilling of the automobile fresh air system valve seat. In view of this, we propose an integrated machine for grinding and drilling valve seats in automobile fresh air systems. Summary of the invention

[0005] The purpose of the present invention is to provide an integrated machine for grinding and punching valve seats of automobile fresh air systems, so as to solve the technical problem of low efficiency in grinding and punching valve seats of automobile fresh air systems.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: an integrated machine for grinding and punching valve seats of automobile fresh air system, comprising a punching machine body, the punching machine body comprising a lifting mechanism, a mounting seat is fixedly provided at the movable end of the lifting mechanism, and a drilling and grinding structure is provided on the mounting seat;

[0007] The drilling and grinding structure comprises a servo motor and a drill bit, wherein the servo motor is fixedly mounted on the top of the mounting seat, and the drill bit is rotatably mounted on the bottom of the mounting seat, and a mounting hole is provided on the top of the drill bit, and a driving mechanism is arranged in the mounting hole, and a plurality of expansion and contraction grooves are provided on the surface of the drill bit in an annular structure with equal spacing, and the expansion and contraction grooves are connected to the mounting hole, and a grinding component is slidably arranged in the expansion and contraction grooves;

[0008] The driving mechanism includes a linkage part A and a linkage part B. The top end of the linkage part A passes through the mounting seat and is fixedly connected to the output shaft of the servo motor. The bottom end of the linkage part A is slidably connected with a lifting part. The bottom end of the lifting part is movably connected with a plurality of the grinding components to form an expansion and contraction structure. The two ends of the linkage part B are respectively meshed and connected with the linkage part A and the top of the mounting hole. The linkage part B is snap-fitted with the mounting seat so that the linkage part A and the drill bit have a forward overall rotating drilling state and a reverse differential rotating grinding state. The present invention designs a driving mechanism structure and a lifting mechanism. The movable end of the lifting mechanism drives the mounting seat and the drilling and grinding structure to rise and fall, so that when the servo motor rotates forward, the servo motor output shaft drives the drill bit, the driving mechanism and the grinding assembly to rotate and drill holes as a whole. When the servo motor rotates reversely, the servo motor drives the linkage A part to rotate, so that the linkage B part rotates, causing the drill bit to rotate differentially relative to the linkage A part, so that the movable end of the lifting part descends, thereby causing the grinding assembly to slowly expand and grind the drilled hole. The effect of immediate grinding after drilling can be achieved only through the forward and reverse rotation of the servo motor output shaft, which greatly saves the time for grinding after drilling the valve seat of the automobile fresh air system, and solves the technical problem of low efficiency in grinding and drilling the valve seat of the automobile fresh air system.

[0009] Preferably, the bottom end of the mounting seat is in the form of an inner and outer structure with a rotation groove and an annular groove respectively, and the top end of the annular groove is in the form of an annular structure with equal spacing and a plurality of clamping grooves.

[0010] Preferably, the top end of the drill bit is rotatably connected to the rotating groove via a rotating ring A, an internal gear ring is fixedly provided on the top of the mounting hole, and a plurality of waste chip guide grooves A are provided on the surface of the drill bit in an annular structure with equal spacing.

[0011] Preferably, the linkage A part includes a gear A, which is arranged at the top of the mounting hole, a connecting shaft is fixedly provided at the top of the gear A, the connecting shaft passes through the mounting seat and is fixedly connected to the servo motor, and a sliding rod is fixedly provided at the bottom of the gear A.

[0012] Preferably, the linkage B part includes a mounting ring block, which is rotatably arranged at the top of the mounting hole relative to the position of the inner gear ring, and a plurality of mounting cavities are opened in the mounting ring block in an annular equidistant structure, and a plurality of rotating shafts A are rotatably connected to the bottom end of the mounting ring block relative to the positions of the plurality of mounting cavities, a gear B is fixedly arranged at the bottom end of the rotating shaft A, and both ends of the gear B are respectively meshed with the gear A and the gear C, and the gear C is meshed with the inner gear ring, and the top end of the rotating shaft A penetrates into the mounting cavity and is movably connected with the mounting cavity through a ratchet unit, and a swivel B is fixedly arranged at the top end of the mounting ring block, and the swivel B is rotatably connected with the rotating groove, and a plurality of clamping grooves are opened at the top end of the swivel B relative to the plurality of clamping grooves, and a clamping unit is arranged in the clamping groove, and the clamping unit is clamped and matched with the clamping groove.

[0013] Preferably, the ratchet unit comprises a clamping gear and a plurality of rotating rods, wherein the clamping gear is arranged in the installation cavity, the clamping gear is fixedly connected to the rotating shaft A, and the plurality of rotating rods are arranged in the installation cavity in a circular structure with equal spacing relative to the clamping gear, and a clamping bar is rotatably connected to the rotating rod, the clamping bar is clamped and matched with the clamping gear, and the clamping bar is elastically connected to the installation cavity through a spring A;

[0014] Among them, the engaging teeth of the engaging gear are in an inclined structure, and the engaging end of the engaging strip block is adapted to the engaging gear.

[0015] Preferably, the clamping unit comprises a clamping slider, the clamping slider is slidably connected in the clamping slot, and the bottom end of the clamping slider is elastically connected to the bottom end of the clamping slot via a spring B;

[0016] Among them, the top end of the clamping slider is a trapezoidal structure, the height of the top inclined surface of the clamping slider is greater than the depth of the clamping groove, and the top end of the clamping slider is clamped and matched with the clamping groove.

[0017] Preferably, the lifting part includes a lifting rod and a rotating column, the lifting rod is provided with a lifting slide groove, the lifting slide groove is slidably connected with the slide rod, an adjustment block is fixedly provided at the bottom end of the lifting rod, a plurality of limit sliders are fixedly provided in a ring-shaped equidistant structure on the adjustment block, a lifting guide groove is provided on the surface of the lifting rod, the rotating column is rotatably arranged in the middle of the mounting hole relative to the position of the lifting guide groove, a movable block is fixedly provided at the centripetal end of the rotating column, the movable block is adapted to the lifting guide groove, and the movable block is movably connected with the lifting guide groove;

[0018] The adjusting block is in a truncated cone structure that is larger at the top and smaller at the bottom.

[0019] Preferably, the lifting guide groove includes a plurality of descending guide grooves arranged in a linear equidistant structure, the descending guide groove is a partial threaded structure, any two adjacent descending guide grooves are connected through an arc groove A, the descending guide groove located at the bottom end is connected to the position of the arc groove A and is provided with an arc groove B, the arc groove B has a greater arc than the arc groove A, and the arc groove B is connected to the descending guide groove located at the top end through an ascending guide groove.

[0020] Preferably, the grinding assembly comprises a mounting block, the mounting block is slidably arranged at the centripetal end of the expansion and contraction slide groove, a mounting slide groove is provided in the mounting block, a mounting slider is slidably connected to the mounting slide groove, the mounting slider is elastically connected to the mounting slide groove through a plurality of springs C arranged evenly, a grinding block is fixedly mounted on the mounting slider, and the grinding block is slidably connected to the eccentric end of the expansion and contraction slide groove;

[0021] The centripetal end of the mounting block is adapted to the surface shape of the adjusting block, and a limiting sliding groove is provided at the centripetal end of the mounting block, and the limiting sliding groove is slidably connected to the limiting sliding block;

[0022] Among them, at least one waste chip guide groove B is opened on the grinding block at a position corresponding to the waste chip guide groove A, the waste chip guide groove A and several corresponding waste chip guide grooves B constitute a waste chip channel, and the grinding ends of several grinding blocks form a closed grinding cylindrical surface.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. The present invention designs a driving mechanism structure and a lifting mechanism. The movable end of the lifting mechanism drives the mounting seat and the drilling and grinding structure to rise and fall, so that when the servo motor rotates forward, the servo motor output shaft drives the drill bit, the driving mechanism and the grinding assembly to rotate and drill as a whole. When the servo motor rotates reversely, the servo motor drives the linkage A part to rotate, so that the linkage B part rotates, causing the drill bit to rotate differentially relative to the linkage A part, so that the movable end of the lifting part descends, so that the grinding assembly slowly expands and grinds the drilled hole. The effect of grinding immediately after drilling can be achieved only by the forward and reverse rotation of the servo motor output shaft, which greatly saves the time for grinding after drilling the valve seat of the automobile fresh air system, and solves the technical problem of low efficiency in grinding and drilling the valve seat of the automobile fresh air system.

[0025] 2. The present invention further designs the lifting guide groove so that the movable block first moves in the descending guide groove to cause the lifting rod to descend. The lifting rod does not descend at this time, which slows down the descending speed of the lifting rod and prolongs the grinding time of the grinding block until the movable block reaches the end of the descending guide groove at the lowest end and then enters the ascending guide groove to move, causing the lifting rod to quickly rise to its original position, and the limiting slider slides along the limiting slider, causing the grinding assembly to quickly return to its original position, thereby reducing the power loss of the servo motor and saving time, further improving the efficiency of grinding and drilling the valve seat of the automobile fresh air system.

[0026] 3. The present invention further designs the grinding assembly so that when the movable block moves in the descending guide groove, the lifting rod descends, driving the mounting block to slide along the limiting slide groove, and the spring C is compressed, so that the contact pressure of the grinding block on the inner wall of the hole gradually increases, and the rotating grinding block grinds the inner wall of the hole. When the movable block moves in the arc groove A, the position of the mounting block remains unchanged, and the rotating grinding block continues to grind the inner wall of the hole. During the grinding process, the spring C recovers, and the grinding block slowly slides along the limiting slide groove, causing the spring C to return to its original state, causing the grinding block to open and grind intermittently, wherein the arc groove A The setting prolongs the opening time of the grinding block and the recovery time of the spring C, and the mounting slider is elastically connected to the mounting slide groove through a number of evenly arranged springs C, which provides a buffer space for the mounting block to slide along the eccentric end of the limiting slide groove in the early stage, reducing the rigid force of the movable block in the grinding state, wherein a number of grinding blocks are at the maximum opening position, and a number of arc surfaces of the grinding blocks form a cylindrical grinding surface with the same diameter as the inner wall of the precision hole, and the arc groove B is set to have a greater arc than the arc groove A, which further prolongs the grinding time of the grinding block on the inner wall of the hole in the final stage, thereby improving the grinding effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 It is a partial structural schematic diagram of the present invention;

[0029] Figure 3 for Figure 2 Schematic diagram of the explosion structure;

[0030] Figure 4 It is a schematic diagram of the structure of the mounting seat of the present invention;

[0031] Figure 5 It is a schematic diagram of the exploded structure of the drill bit and the driving mechanism of the present invention;

[0032] Figure 6 for Figure 5 Schematic diagram of the explosion structure;

[0033] Figure 7 for Figure 6 A schematic diagram of an enlarged local structure of FIG.

[0034] Figure 8 for Figure 7 A schematic diagram of the enlarged structure of the figure;

[0035] Fig. 9 for Figure 8 A magnified schematic diagram of the local structure;

[0036] Fig.10 for Figure 7 FIG. B is an enlarged schematic diagram of the structure;

[0037] Fig.11 It is a schematic diagram of the lifting part structure of the present invention;

[0038] Fig.12 It is a schematic diagram of the concrete structure of the lifting guide groove of the present invention;

[0039] Fig.13 It is an exploded schematic diagram of the grinding assembly structure of the present invention;

[0040] Description of the numbers in the figure:

[0041] 1. Punching machine body; 2. Lifting mechanism; 3. Mounting seat; 4. Drilling and grinding structure; 5. Servo motor; 6. Drill bit; 7. Driving mechanism; 8. Grinding assembly;

[0042] 31. Rotating groove; 32. Ring groove; 33. Snap-fit ​​groove;

[0043] 61. Mounting hole; 62. Expansion and contraction slide; 63. Swivel A; 64. Internal gear ring; 65. Waste chip guide groove A;

[0044] 71. Linking part A; 72. Linking part B; 73. Lifting part;

[0045] 81. Mounting block; 82. Mounting slide; 83. Mounting slide block; 84. Spring C; 85. Grinding block; 86. Waste chip guide groove B;

[0046] 711, gear A; 712, connecting shaft; 713, sliding rod;

[0047] 720, gear B; 721, mounting ring block; 722, mounting cavity; 723, rotating shaft; 724, ratchet unit; 725, rotating ring B; 726, clamping slide groove; 727, clamping unit; 728, rotating shaft B; 729, gear C;

[0048] 731, lifting rod; 732, lifting slide; 733, adjusting block; 734, lifting guide groove; 735, rotating column; 736, movable block;

[0049] 7241, snap-fit ​​gear; 7242, rotating rod; 7243, snap-fit ​​strip block; 7244, spring A;

[0050] 7271, clamping slider; 7272, spring B;

[0051] 7341, descending guide groove; 7342, arc groove A; 7343, arc groove B; 7344, ascending guide groove. DETAILED DESCRIPTION

[0052] like Figures 1 to 13 As shown, the present invention relates to an integrated machine for grinding and punching valve seats of automobile fresh air systems, including a punching machine body 1, the punching machine body 1 includes a lifting mechanism 2, a mounting seat 3 is fixedly provided at the movable end of the lifting mechanism 2, the bottom end of the mounting seat 3 is an inner and outer structure respectively provided with a rotating groove 31 and an annular groove 32, and the top end of the annular groove 32 is an annular structure with equal spacing and provided with a plurality of clamping grooves 33.

[0053] In an embodiment of the present invention, a drilling and grinding structure 4 is provided on the mounting seat 3; the drilling and grinding structure 4 includes a servo motor 5 and a drill bit 6, the servo motor 5 is fixedly arranged at the top of the mounting seat 3, the drill bit 6 is rotatably arranged at the bottom of the mounting seat 3, a mounting hole 61 is provided at the top of the drill bit 6, a plurality of expansion and contraction grooves 62 are provided on the surface of the drill bit 6 in an annular structure with equal spacing, the expansion and contraction grooves 62 are communicated with the mounting hole 61, the top of the drill bit 6 is rotatably connected to the rotating groove 31 through a rotating ring A63, an inner gear ring 64 is fixedly arranged at the top of the mounting hole 61, and a plurality of waste chip guide grooves A65 are provided on the surface of the drill bit 6 in an annular structure with equal spacing.

[0054] In the embodiment of the present invention, a driving mechanism 7 is arranged in the mounting hole 61, and the driving mechanism 7 includes a linkage A part 71 and a linkage B part 72. The top of the linkage A part 71 passes through the mounting seat 3 and is fixedly connected to the output shaft of the servo motor 5. The linkage A part 71 includes a gear A711, which is arranged at the top of the mounting hole 61. A coupling shaft 712 is fixedly arranged at the top of the gear A711. The coupling shaft 712 passes through the mounting seat 3 and is fixedly connected to the servo motor 5. A slide bar 713 is fixedly arranged at the bottom of the gear A711. Through the above arrangement, the present invention enables the rotation of the output shaft of the driving mechanism 7 to drive the rotation of the coupling shaft 712, the gear A711 and the slide bar 713.

[0055] In the embodiment of the present invention, the two ends of the linkage B part 72 are respectively meshed with the linkage A part 71 and the top of the mounting hole 61, and the linkage B part 72 is engaged with the mounting seat 3 so that the linkage A part 71 and the drill bit 6 have a forward integral rotation drilling state and a reverse differential rotation grinding state. The specific structure is that the linkage B part 72 includes a mounting ring block 721, and the mounting ring block 721 is rotatably arranged at the top of the mounting hole 61 relative to the inner gear ring 64, and the mounting ring block 721 has a circular equidistant structure. There are a number of installation cavities 722, and the bottom end of the installation ring block 721 is rotatably connected to a number of rotating shafts A723 relative to the position of the number of installation cavities 722. A gear B720 is fixedly provided at the bottom end of the rotating shaft A723. The bottom end of the installation ring block 721 is rotatably connected to a number of rotating shafts A723. A gear C729 is fixedly provided at the bottom end of the rotating shaft B728. The two ends of the gear B720 are respectively meshed with the gear A711 and the gear C729, and the gear C729 is meshed with the inner gear ring 64.

[0056] In the embodiment of the present invention, the top end of the rotating shaft A723 penetrates into the installation cavity 722 and is movably connected with the installation cavity 722 through the ratchet unit 724. The ratchet unit 724 includes a clamping gear 7241 and a plurality of rotating rods 7242. The clamping gear 7241 is arranged in the installation cavity 722. The clamping gear 7241 is fixedly connected with the rotating shaft A723. The plurality of rotating rods 7242 are arranged in the installation cavity 722 in a circular equidistant structure relative to the clamping gear 7241. The clamping bar 7243 is rotatably connected to the rotating rod 7242. The clamping bar 7243 is clamped and matched with the clamping gear 7241. The clamping bar 7243 is elastically connected with the installation cavity 722 through the spring A7244. The clamping teeth of the clamping gear 7241 are in an inclined structure. The clamping end of the clamping bar 7243 is adapted to the clamping gear 7241. Through the above arrangement, the present invention enables the gear B720 to rotate only in one direction.

[0057] In the embodiment of the present invention, a rotating ring B725 is fixed on the top of the mounting ring block 721, and the rotating ring B725 is rotatably connected with the rotating groove 31. A plurality of clamping grooves 726 are provided on the top of the rotating ring B725 relative to the plurality of clamping grooves 33. A clamping unit 727 is arranged in the clamping groove 726, and the clamping unit 727 is clamped and matched with the clamping groove 33. The clamping unit 727 includes a clamping slider 7271, which is slidably connected in the clamping groove 726, and the bottom end of the clamping slider 7271 is elastically connected with the bottom end of the clamping groove 726 through a spring B7272; the top end of the clamping slider 7271 is a trapezoidal structure, the height of the top inclined surface of the clamping slider 7271 is greater than the depth of the clamping groove 33, and the top end of the clamping slider 7271 is clamped and matched with the clamping groove 33. Through the above arrangement, the present invention enables the rotating ring B725 to rotate only in one direction.

[0058] In the embodiment of the present invention, the bottom end of the linkage A part 71 is slidably connected with a lifting part 73, and the lifting part 73 includes a lifting rod 731 and a rotating column 735. The lifting rod 731 is provided with a lifting slide groove 732, and the lifting slide groove 732 is slidably connected to the slide rod 713. An adjusting block 733 is fixedly provided at the bottom end of the lifting rod 731, and a plurality of limit sliders 730 are fixedly provided on the adjusting block 733 in a ring-shaped and equidistant structure. A lifting guide groove 734 is provided on the surface of the lifting rod 731, and the rotating column 735 is rotatably arranged in the middle of the mounting hole 61 relative to the lifting guide groove 734. A movable block 736 is fixedly provided at the centripetal end of the rotating column 735, and the movable block 736 is adapted to the lifting guide groove 734, and the movable block 736 is movably connected to the lifting guide groove 734, and the adjusting block 733 is a frustum structure with a larger top and a smaller bottom. Through the above arrangement, the present invention enables the mounting seat 3 and the drilling and grinding structure 4 to be driven down by the movable end of the lifting mechanism 2 during drilling, and the servo motor 5 is controlled to rotate in the forward direction by the external control mechanism, and the output shaft of the servo motor 5 drives the linkage A part 71 to rotate. Since the engaging gear 7241 is engaged with the engaging bar block 7243, the gear B720 cannot rotate, so that the gear A711, the gear B720, the gear C729 and the inner gear ring 64 form a relatively fixed structure, so that the driving mechanism 7 and the grinding assembly 8 rotate as a whole, and the movable end of the lifting mechanism 2 drives the drill bit 6 to drill holes in the valve seat of the automobile fresh air system, and the waste chips are discharged from the waste chip channel;

[0059] During grinding, the grinding assembly 8 is in a state of being inserted into the hole. At this time, the servo motor 5 is controlled by an external control mechanism to rotate in the opposite direction, and the top of the engaging slider 7271 is engaged with the engaging groove 33, so that the swivel B725 and the mounting ring block 721 cannot rotate. The rotation of gear A711 drives the gear B720 to rotate, and the gear B720 drives the gear C729 to rotate, so that the inner gear ring 64 and the gear B720 form a differential motion in the same direction, so that the lifting rod 731 and the drill bit 6 rotate differentially, and the lifting guide groove 734 rotates relative to the movable block 736, so that the lifting rod 731 descends, and the adjusting block 733 descends to squeeze the grinding assembly 8, so that the mounting block 81 slides along the expansion and contraction slide groove 62, and a number of rotating grinding blocks 85 grind the inner wall of the hole.

[0060] As another embodiment of the present invention, the lifting guide groove 734 includes a plurality of descending guide grooves 7341 arranged in a linear and equidistant structure, the descending guide groove 7341 is a partial threaded structure, any two adjacent descending guide grooves 7341 are connected through an arc groove A7342, the descending guide groove 7341 at the bottom end is connected to the position of the arc groove A7342 and is provided with an arc groove B7343, the arc groove B7343 has a greater arc than the arc groove A7342, and the arc groove B7343 is connected to the descending guide groove 7341 at the top through the ascending guide groove 7344. The present invention further designs the lifting guide groove 734 so that the movable block 736 first moves in the descending guide groove 7341 to cause the lifting rod 731 to descend. The lifting rod 731 does not descend at this time, which delays the descending speed of the lifting rod 731 and prolongs the grinding time of the grinding block 85 until the movable block 736 reaches the end of the descending guide groove 7341 at the lowest end and enters the ascending guide groove 7344 to move, causing the lifting rod 731 to quickly rise to its original position, and the limiting slider 730 slides along the limiting slider 80, causing the grinding assembly 8 to quickly return to its original position, thereby reducing the power loss of the servo motor 5 and saving time, thereby further improving the efficiency of grinding and drilling the valve seat of the automobile fresh air system.

[0061] In the embodiment of the present invention, a grinding assembly 8 is slidably provided in the expansion and contraction chute 62, and the bottom end of the lifting part 73 is movably connected with a plurality of grinding assemblies 8 to form an expansion and contraction structure. The grinding assembly 8 includes a mounting block 81, which is slidably provided at the centripetal end of the expansion and contraction chute 62. A mounting chute 82 is provided in the mounting block 81, and a mounting slider 83 is slidably connected to the mounting chute 82. The mounting slider 83 is elastically connected to the mounting chute 82 through a plurality of evenly arranged springs C84. A grinding block 85 is fixedly installed on the mounting slider 83, and the grinding block 85 is slidably connected to the eccentric end of the expansion and contraction chute 62.

[0062] The centripetal end of the mounting block 81 is adapted to the surface shape of the adjusting block 733, and a limiting slide groove 80 is provided at the centripetal end of the mounting block 81, and the limiting slide groove 80 is slidably connected to the limiting slider 733.

[0063] Among them, at least one waste chip guide groove B86 is opened on the grinding block 85 at a position corresponding to the waste chip guide groove A65, the waste chip guide groove A65 and several corresponding waste chip guide grooves B86 constitute a waste chip channel, and the grinding ends of several grinding blocks 85 form a closed grinding cylindrical surface. The present invention further designs the grinding assembly 8 so that when the movable block 736 moves in the descending guide groove 7341, the lifting rod 731 descends, driving the mounting block 81 to slide along the limiting slide groove 80, and the spring C84 is compressed, so that the contact pressure of the grinding block 85 on the inner wall of the hole gradually increases, and the rotating grinding block 85 grinds the inner wall of the hole. When the movable block 736 moves in the arc groove A7342, the position of the mounting block 81 remains unchanged, and the rotating grinding block 85 continues to grind the inner wall of the hole. During the grinding process, the spring C84 recovers, and the grinding block 85 slowly slides along the limiting slide groove 80, causing the spring C84 to recover to its original state, causing the grinding block 85 to open and grind intermittently. The setting of the arc groove A7342 prolongs the opening time of the grinding block 85 and the recovery time of the spring C84, and the mounting slide block 83 and the mounting slide groove 82 is elastically connected by a number of evenly arranged springs C84, providing a buffer space for the mounting block 81 in the early stage of sliding along the eccentric end of the limiting slide groove 80, reducing the rigid force of the movable block 736 in the grinding state, wherein a number of grinding blocks 85 are at the maximum open position, and the arc surfaces of a number of grinding blocks 85 form a cylindrical grinding surface equal to the diameter of the inner wall of the precision hole, and the arc groove B7343 is set to have an arc greater than the arc groove A7342, which further extends the grinding time of the grinding block 85 on the inner wall of the hole in the final stage, thereby improving the grinding effect, and the waste chip guide groove A65 and a number of corresponding waste chip guide grooves B86 are set to form a waste chip channel to ensure that waste chips can be discharged from the waste chip channel when drilling, and the grinding ends of a number of grinding blocks 85 are set to form a closed grinding cylindrical surface to ensure that a number of grinding blocks 85 grind all the inner walls of the hole.

[0064] Working principle: This embodiment provides an integrated machine for grinding and drilling valve seats of automobile fresh air system. When drilling holes, the movable end of the lifting mechanism 2 drives the mounting seat 3 and the drilling and grinding structure 4 to descend, and the servo motor 5 is controlled to rotate forwardly by an external control mechanism. The output shaft of the servo motor 5 drives the linkage A part 71 to rotate. Since the clamping gear 7241 is clamped with the clamping bar 7243, the gear B720 cannot rotate, so that the gear A711, the gear B720, the gear C729 and the inner gear ring 64 form a relatively fixed structure, so that the driving mechanism 7 and the grinding assembly 8 rotate as a whole, and the movable end of the lifting mechanism 2 drives the drill bit 6 to drill holes in the valve seat of the automobile fresh air system, and the waste chips are discharged from the waste chip channel;

[0065] During grinding, the grinding assembly 8 is in a state of being inserted into the hole. At this time, the servo motor 5 is controlled by the external control mechanism to rotate in the opposite direction, and the top of the clamping slide block 7271 is clamped with the clamping groove 33, so that the rotating ring B725 and the mounting ring block 721 cannot rotate. The rotation of the gear A711 drives the gear B720 to rotate, and the gear B720 drives the gear C729 to rotate, so that the inner gear ring 64 and the gear B720 form a same-direction differential motion, so that the lifting rod 731 and the drill bit 6 rotate at a differential speed, so that the lifting guide groove 734 rotates relative to the movable block 736, so that the lifting rod 731 descends, and the adjusting block 733 descends to squeeze the grinding assembly 8, so that the mounting block 81 slides along the expansion and contraction slide groove 62, and a plurality of rotating grinding blocks 85 grind the inner wall of the hole;

[0066] Among them, the speed difference between the inner gear ring 64 and the gear B720 is small. After the inner gear ring 64 and the gear B720 rotate several circles, the inner gear ring 64 and the gear B720 rotate one circle relative to each other, and the movable block 736 first moves in the descending guide groove 7341 to cause the lifting rod 731 to descend, and then moves in the arc groove A7342. The lifting rod 731 does not descend at this time, delaying the descending speed of the lifting rod 731, extending the grinding time of the grinding block 85, and improving the grinding effect, until the movable block 736 reaches the end of the descending guide groove 7341 at the lowest end and enters the ascending guide groove 7344 to move, causing the lifting rod 731 to quickly rise to its original position, and the limiting slider 730 slides along the limiting slide groove 80, causing the grinding assembly 8 to quickly return to its original position, reducing the power loss of the servo motor 5, and saving time, further improving the efficiency of grinding and drilling the valve seat of the automobile fresh air system.

[0067] The embodiments of the present invention disclose preferred embodiments, but are not limited thereto. A person skilled in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not deviate from the spirit of the present invention, they are all within the protection scope of the present invention.

Claims

1. An integrated machine for grinding and punching valve seats of automobile fresh air systems, comprising a punching machine body (1), characterized in that: The punch body (1) comprises a lifting mechanism (2), a mounting seat (3) is fixedly provided at the movable end of the lifting mechanism (2), and a drilling and grinding structure (4) is provided on the mounting seat (3); The drilling and grinding structure (4) comprises a servo motor (5) and a drill bit (6), wherein the servo motor (5) is fixedly mounted on the top of the mounting seat (3), and the drill bit (6) is rotatably mounted on the bottom of the mounting seat (3). A mounting hole (61) is provided on the top of the drill bit (6), and a driving mechanism (7) is arranged in the mounting hole (61). The surface of the drill bit (6) is provided with a plurality of expansion and contraction grooves (62) in an annular structure with equal spacing, and the expansion and contraction grooves (62) are connected to the mounting hole (61), and a grinding assembly (8) is slidably arranged in the expansion and contraction grooves (62); The driving mechanism (7) comprises a linkage A part (71) and a linkage B part (72), the top end of the linkage A part (71) passes through the mounting seat (3) and is fixedly connected to the output shaft of the servo motor (5), the bottom end of the linkage A part (71) is slidably connected to a lifting part (73), the bottom end of the lifting part (73) is movably connected to a plurality of the grinding components (8) to form an expansion and contraction structure, the two ends of the linkage B part (72) are respectively meshed and connected with the linkage A part (71) and the top of the mounting hole (61), the linkage B part (72) and the mounting seat (3) are snap-fitted so that the linkage A part (71) and the drill bit (6) have a forward integral rotation drilling state and a reverse differential rotation grinding state; The bottom end of the mounting seat (3) is in the form of an inner and outer structure, respectively provided with a rotation groove (31) and an annular groove (32); the top end of the annular groove (32) is in the form of an annular structure with equal spacing, provided with a plurality of clamping grooves (33); The top end of the drill bit (6) is rotatably connected to the rotating groove (31) via a rotating ring A (63); an inner gear ring (64) is fixedly provided at the top of the mounting hole (61); and a plurality of waste chip guide grooves A (65) are provided on the surface of the drill bit (6) in an annular structure with equal spacing; The linkage A portion (71) comprises a gear A (711), the gear A (711) being arranged at the top end of the mounting hole (61), a connecting shaft (712) being fixedly provided at the top end of the gear A (711), the connecting shaft (712) passing through the mounting seat (3) and being fixedly connected to the servo motor (5), and a sliding rod (713) being fixedly provided at the bottom end of the gear A (711); The linkage B portion (72) comprises a mounting ring block (721), the mounting ring block (721) being rotatably arranged at the top end of the mounting hole (61) relative to the position of the inner gear ring (64), a plurality of mounting cavities (722) being provided in an annular structure with equal spacing therebetween, a plurality of rotating shafts A (723) being rotatably connected at the bottom end of the mounting ring block (721) relative to the position of the plurality of mounting cavities (722), a gear B (720) being fixedly arranged at the bottom end of the rotating shaft A (723), a plurality of rotating shafts B (728) being rotatably connected at the bottom end of the mounting ring block (721) relative to the position of the plurality of rotating shafts A (723), a gear C (729) being fixedly arranged at the bottom end of the rotating shaft B (728), and both ends of the gear B (720) being provided with a plurality of rotating shafts B (728). The rotating shaft A (723) is respectively meshed with the gear A (711) and the gear C (729), the gear C (729) is meshed with the inner gear ring (64), the top end of the rotating shaft A (723) penetrates into the mounting cavity (722) and is movably connected with the mounting cavity (722) via a ratchet unit (724), a rotating ring B (725) is fixedly provided at the top end of the mounting ring block (721), the rotating ring B (725) is rotatably connected with the rotating groove (31), a plurality of clamping grooves (726) are provided at the top end of the rotating ring B (725) relative to the plurality of clamping grooves (33), a clamping unit (727) is arranged in the clamping groove (726), and the clamping unit (727) is clamped and matched with the clamping groove (33); The clamping unit (727) comprises a clamping slider (7271), the clamping slider (7271) is slidably connected in the clamping slide groove (726), and the bottom end of the clamping slider (7271) is elastically connected to the bottom end of the clamping slide groove (726) via a spring B (7272); The top end of the clamping slider (7271) is in a trapezoidal structure, the height of the top inclined surface of the clamping slider (7271) is greater than the depth of the clamping groove (33), and the top end of the clamping slider (7271) is clamped and matched with the clamping groove (33); The lifting part (73) comprises a lifting rod (731) and a rotating column (735), the lifting rod (731) is provided with a lifting slide groove (732), the lifting slide groove (732) is slidably connected to the slide rod (713), an adjusting block (733) is fixedly provided at the bottom end of the lifting rod (731), a plurality of limit sliders (730) are fixedly provided on the adjusting block (733) in an annular equidistant structure, a lifting guide groove (734) is provided on the surface of the lifting rod (731), the rotating column (735) is rotatably arranged at the middle part of the mounting hole (61) relative to the position of the lifting guide groove (734), a movable block (736) is fixedly provided at the centripetal end of the rotating column (735), the movable block (736) is adapted to the lifting guide groove (734), and the movable block (736) is movably connected to the lifting guide groove (734); Wherein, the adjustment block (733) is in the form of a frustum structure with a larger top and a smaller bottom; The lifting guide groove (734) comprises a plurality of descending guide grooves (7341) arranged in a linear and equidistant structure, the descending guide groove (7341) is a partial thread structure, any two adjacent descending guide grooves (7341) are connected via an arc groove A (7342), the descending guide groove (7341) at the bottom is connected to an arc groove B (7343) at a position relative to the arc groove A (7342), the arc groove B (7343) has a greater arc than the arc groove A (7342), and the arc groove B (7343) is connected to the descending guide groove (7341) at the top via an ascending guide groove (7344); The grinding assembly (8) comprises a mounting block (81), the mounting block (81) being slidably disposed at the centripetal end of the expansion and contraction slide groove (62), a mounting slide groove (82) being provided in the mounting block (81), a mounting slider (83) being slidably connected to the mounting slide groove (82), the mounting slider (83) being elastically connected to the mounting slide groove (82) via a plurality of evenly arranged springs C (84), a grinding block (85) being fixedly mounted on the mounting slider (83), and the grinding block (85) being slidably connected to the eccentric end of the expansion and contraction slide groove (62); The centripetal end of the mounting block (81) is adapted to the surface shape of the adjusting block (733), a limiting sliding groove (80) is provided at the centripetal end of the mounting block (81), and the limiting sliding groove (80) is slidably connected to the limiting sliding block (730); Wherein, at least one waste chip guide groove B (86) is provided on the grinding block (85) at a position corresponding to the waste chip guide groove A (65); the waste chip guide groove A (65) and a plurality of corresponding waste chip guide grooves B (86) form a waste chip channel; and the grinding ends of the plurality of grinding blocks (85) form a closed grinding cylindrical surface.

2. The integrated machine for grinding and punching valve seats of automobile fresh air system according to claim 1, characterized in that: The ratchet unit (724) comprises a snap-fit ​​gear (7241) and a plurality of rotating rods (7242); the snap-fit ​​gear (7241) is arranged in the installation cavity (722); the snap-fit ​​gear (7241) is fixedly connected to the rotating shaft A (723); a plurality of rotating rods (7242) are arranged in the installation cavity (722) in a ring-shaped structure with equal spacing relative to the snap-fit ​​gear (7241); a snap-fit ​​strip (7243) is rotatably connected to the rotating rod (7242); the snap-fit ​​strip (7243) is snap-fitted with the snap-fit ​​gear (7241); and the snap-fit ​​strip (7243) is elastically connected to the installation cavity (722) via a spring A (7244); The engaging teeth of the engaging gear (7241) are of an inclined structure, and the engaging end of the engaging strip block (7243) is adapted to the engaging gear (7241).

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