A multi-axis automatic centering grinding machine

Abstract

The present invention relates to the technical field of grinding machines, and specifically to a multi-axis automatic centering grinding machine, comprising: a workbench is fixedly connected to the upper end surface of the base, an X mover, a Z mover and a Y mover are installed in the base; a grinding drive mechanism, the grinding drive mechanism comprises a fixed block fixedly connected to the moving end of the Z mover, an NFC reader is fixedly connected to the bottom of the fixed block, a driver is fixedly connected to the side of the fixed block, and a hollow transmission shaft is fixedly connected to the output end of the driver. Through the hollow ferrule, the female buckle assembly, the one-way exhaust valve and the stretching rod in the grinding mechanism, the ring-shaped annular grinding wheel of the corresponding mesh number can be replaced, and the pressure change in the hollow ferrule can be changed by different temperatures, so that the hollow ferrule presents different effects on the current ring-shaped annular grinding wheel at different stages of different grinding, and can be dynamically adjusted according to the temperature to ensure the stable performance of the grinding wheel during the entire grinding process.

Description

Technical Field

[0001] The invention relates to the technical field of grinding machines, and in particular to a multi-axis automatic centering grinding machine. Background Art

[0002] The multi-axis automatic centering grinder is a key equipment in the field of modern precision machining. It integrates advanced measurement, CNC and multi-axis motion control technologies. Through high-precision laser measurement, contact probe or machine vision system, the position and shape information of the grinding wheel and the workpiece are obtained in real time. Relying on the powerful CNC system, after precise calculation based on these data, the linear axes such as X, Y, Z and the rotation axes such as A, B, C are precisely driven to work together, and the relative position of the grinding wheel and the workpiece is automatically and quickly adjusted, so that the rotation center or machining center of the two is accurately aligned, such as the planetary multi-axis grinder disclosed in the Chinese patent with publication number CN110802485A.

[0003] When a multi-axis automatic centering grinder is used to grind a workpiece, the grinding accuracy and temperature of the workpiece are different at different stages of grinding. Therefore, as the processing progresses, the grinding accuracy needs to be gradually increased. This is because the workpiece has gradually increased precision requirements for surface quality, dimensional tolerance, etc. at different stages of grinding. High-precision grinding is the key to ensuring that the final performance and quality of the workpiece meet the standards. Therefore, it is necessary to replace the grinding wheel of the corresponding mesh at different stages of workpiece grinding, and cool the grinding wheel during grinding. However, the existing equipment usually replaces and cools the grinding wheel by manually replacing the grinding wheel of the corresponding mesh and directly flushing the grinding wheel with water at different stages of workpiece grinding, which will lead to a series of adverse consequences. First, the manual replacement of the grinding wheel of the corresponding mesh is inefficient. Under the high-precision and high-efficiency processing rhythm of the multi-axis automatic centering grinder, frequent shutdowns to replace grinding wheels will greatly increase the processing time interval, slow down the overall production process, and fail to give full play to the production capacity advantages of the multi-axis grinder. Secondly, although using water to directly flush the grinding wheel to cool it down is simple and direct, the size and direction of the water flow are difficult to accurately control, which can easily cause local sudden cooling of the grinding wheel and induce uneven thermal stress, resulting in cracks or even breakage of the grinding wheel. This not only threatens the safety of operators, but also interrupts the processing process, causing equipment downtime and increased maintenance costs. Summary of the invention

[0004] In view of the above-mentioned shortcomings of the prior art, the present invention provides a multi-axis automatic centering grinder, which can effectively solve the problems of low efficiency of manually replacing the grinding wheel of corresponding mesh size in the prior art and using water flow to directly flush the grinding wheel to cool it down, which easily causes local sudden cooling of the grinding wheel.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] The present invention provides a multi-axis automatic centering grinding machine, comprising:

[0007] A base, wherein a workbench is fixedly connected to the upper end surface of the base, and an X mover, a Z mover and a Y mover are installed in the base;

[0008] A grinding drive mechanism, wherein the grinding drive mechanism comprises a fixed block fixedly connected to the moving end of the Z mover, an NFC reader fixedly connected to the bottom of the fixed block, a driver fixedly connected to the side of the fixed block, a hollow transmission shaft fixedly connected to the output end of the driver, a sub-button assembly provided at the other end of the hollow transmission shaft, and an air compressor connected to the hollow transmission shaft provided on the side of the Z mover;

[0009] The grinding mechanism has multiple parts and is arranged one by one inside the storage component. The grinding drive mechanism is locked and connected with any one of the grinding mechanisms. The grinding mechanism includes a female buckle component. A hollow transmission shaft is arranged at the bottom of the female buckle component. The other end of the hollow transmission shaft is fixedly connected to a hollow ring. The outer peripheral surface of the hollow ring is movably sleeved with a ring-type annular grinding wheel through a snap-fit. The mesh counts of the ring-type annular grinding wheels in the multiple grinding mechanisms are inconsistent.

[0010] Preferably, a plurality of air holes are formed in an annular array on the outer circumference of the hollow transmission shaft, an air guide ring is connected to the outer circumference of the air hole in an airtight rotation manner, and the air guide ring is connected to the air hole, a hose is fixedly connected to the outer circumference of the air guide ring, the air compressor is fixedly connected to the side of the Z mover, a transmission pipe is fixedly connected to the output end of the air compressor, and the other end of the transmission pipe passes through the Z mover and is connected to the hose;

[0011] The sub-buckle assembly includes a fixed plate fixedly connected to the outer circumference of the hollow transmission shaft near the lower position, and a plurality of pin blocks are fixedly connected to the outer circumference of the fixed plate in an annular array.

[0012] Preferably, it further comprises a cleaning mechanism, the cleaning mechanism comprising a box body fixedly connected to the upper end surface, the upper end surface of the box body is provided with an inventory display component, a plurality of storage components are provided in a linear array at the inner bottom of the box body, and a circulation pump and a filter component interconnected with each storage component are provided on the side of the base;

[0013] The inventory display component includes a cover plate fixedly connected to the upper end surface of the box body, and the upper end surface of the cover plate is fixedly connected with multiple indicator lights and multiple NFC electronic tags, and the indicator lights, NFC electronic tags and storage components correspond one to one.

[0014] Preferably, the storage assembly comprises a storage box fixedly connected to the bottom of the box body, the four corners of the bottom of the storage box are fixedly connected with exhaust blocks, any inner side wall of the storage box is provided with a fixing assembly, the fixing assembly comprises an elastic block fixedly connected to the inner wall of the storage box, the other side of the elastic block is fixedly connected with a protective cover, a roller is rotatably connected in the open end of the protective cover, and a weight detector and a pressure switch are fixedly connected to the inner bottom of the storage box;

[0015] The upper end surface of the storage box is provided with a guide assembly, which includes a top cover fixedly connected to the upper end surface of the storage box, a guide tube is fixedly connected to the center position of the upper end surface of the top cover, and the other end of the guide tube passes through the cover plate.

[0016] Preferably, two square tubes are fixedly connected to the side of the box, and an airflow control component corresponding to the number and position of the storage components is provided on the side of the box away from the workbench. The airflow control component includes a three-way pipe fixedly connected to the side of the box, and the two square tubes pass through the box and are connected to the two output ends of the three-way pipe. One input end of the three-way pipe is fixedly connected to a solenoid valve through a pipeline.

[0017] Preferably, the filter assembly includes a filter box fixedly connected to the side of the base, the filter box has an opening on the side away from the base, a protective door is hingedly connected to the opening of the filter box, an exhaust port is installed at the lower position of the protective door, a filter net is movably connected to the upper position of the interior of the filter box, and a plurality of activated carbon rods are movably connected to the rectangular array at the inner bottom of the filter box.

[0018] Preferably, the circulation pump is fixedly connected to the upper end surface of the filter box, the input end of the circulation pump is connected to the inside of the filter box through a pipeline, the output end of the circulation pump is fixedly connected to a multi-way tube through a pipeline, the multi-way tube has an output end and multiple input ends, the output end of the circulation pump is connected to the gas pipe, the number of input ends of the multi-way tube is consistent with the number of storage components, the output end of the solenoid valve is fixedly connected to a conduit, and the conduit is connected to the input end of the multi-way tube.

[0019] Preferably, the female buckle assembly includes a concave disk slidably connected to a fixed disk, an L-shaped plug-in block with the same number of pin blocks is fixedly connected to the inner wall annular array of the concave disk, the pin block is slidably engaged with the inner groove of the L-shaped plug-in block, the hollow transmission shaft is fixedly connected to the center position of the upper end surface of the hollow ferrule, the upper end surface of the hollow ferrule is fixedly connected to a plurality of one-way exhaust valves in an annular array with the hollow transmission shaft as the center, the hollow ferrule is provided with a gas release assembly inside the hollow transmission shaft, the gas release assembly includes an exhaust pipe fixedly connected to the inside of the hollow ferrule, a plurality of exhaust holes are fixedly connected to the outer peripheral surface of the exhaust pipe in an annular array, and the hollow transmission shaft passes through the hollow ferrule and is connected to the exhaust pipe, a stretching rod corresponding to the one-way exhaust valve is fixedly connected to the inside of the hollow ferrule, and one end of the stretching rod is connected to the one-way exhaust valve;

[0020] Among them, a controller is installed on the side of the base, the ring-type annular grinding wheel of the grinding mechanism located in the cleaning mechanism is in contact with the fixed component, the weight detector, and the pressure switch, and the weight detector, the pressure switch, the NFC reader, the NFC electronic tag, the indicator light and the solenoid valve are electrically connected to the controller.

[0021] Compared with the known prior art, the technical solution provided by the present invention has the following beneficial effects:

[0022] 1. Through the hollow ring, female buckle assembly, one-way exhaust valve and stretching rod in the grinding mechanism, the ring-shaped annular grinding wheel of the corresponding mesh number can be replaced, and the pressure change in the hollow ring can be changed by different temperatures, so that the hollow ring can show different effects on the current ring-shaped annular grinding wheel at different stages of different grinding. Among them, the hollow ring is used to clamp the mesh number of the ring-shaped annular grinding wheel at different stages when grinding the current workpiece, and store it in the cleaning mechanism, and the female buckle assembly is used to lock with the sub-buckle assembly, so that the driver can replace the ring-shaped annular grinding wheel of the required mesh number in the cleaning mechanism. Since the stretching rod is made of heat-sensitive material, the stretching rod can undergo different temperature changes in the hollow ring. Under different circumstances, different pulling forces are applied to the one-way exhaust valve to control the pressure delivered to the hollow ring by the air compressor and the air pressure released in the hollow ring, so as to realize cooling of the ring-shaped annular grinding wheel outside the hollow ring. By setting the ring-shaped annular grinding wheel with the mesh number required for different grinding stages in the hollow ring, the precision requirements of the workpiece in each stage can be flexibly switched, the adaptability of the grinding wheel is improved, and the inefficiency and error of manual grinding wheel replacement are avoided. The air pressure in the hollow ring at different stages and the released air pressure value are controlled, which can not only realize the efficient cooling of the ring-shaped annular grinding wheel and avoid the adverse consequences such as grinding wheel cracks and thermal deformation of the workpiece caused by temperature problems, but also can be dynamically adjusted according to the temperature to ensure the stable performance of the grinding wheel during the entire grinding process.

[0023] 2. Through the inventory display component, storage component, airflow control component and filter component in the cleaning mechanism, the position and state of the grinding mechanism stored in the cleaning mechanism can be displayed, so as to facilitate the replacement and acquisition of the grinding drive mechanism, and the replaced grinding mechanism can be cleaned. Among them, the inventory display component can display the position and state of the corresponding grinding mechanism stored in the storage component, and the storage component stores the grinding mechanism, and uses the airflow control component and the filter component to clean the replaced grinding mechanism, thereby ensuring the good condition of the replacement parts and facilitating subsequent use at any time.

[0024] 3. The fixed block, NFC reader, air guide ring, sub-button assembly and air compressor in the grinding drive mechanism can realize the acquisition of grinding mechanisms of different mesh sizes in the cleaning mechanism, and the NFC reader can obtain the position of the grinding mechanism required by the driver in the cleaning mechanism, and inject gas into the hollow ring of the acquired grinding mechanism through the sub-button assembly and the air compressor to increase the air pressure in the hollow ring. The gas is stably injected into the hollow ring of the acquired grinding mechanism through the sub-button assembly, which effectively improves the air pressure in the hollow ring and helps to optimize some mechanical properties in the grinding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 It is a schematic structural diagram of the overall side of the present invention;

[0028] Figure 3 It is a schematic structural diagram of the grinding drive mechanism of the present invention;

[0029] Figure 4 It is a schematic diagram of the overall structure of the grinding drive mechanism of the present invention;

[0030] Figure 5 It is a structural schematic diagram of the driver of the present invention;

[0031] Figure 6 It is a structural schematic diagram of the air guide ring of the present invention;

[0032] Figure 7 It is a structural schematic diagram of the grinding mechanism of the present invention;

[0033] Figure 8 It is a schematic diagram of the structure inside the grinding mechanism of the present invention;

[0034] Fig. 9 It is a schematic diagram of the overall structure of the cleaning mechanism of the present invention;

[0035] Fig.10 It is a structural schematic diagram of the storage component of the present invention;

[0036] Fig.11 It is a schematic diagram of the structure inside the box of the present invention;

[0037] Fig.12 It is a schematic diagram of the structure inside the storage component of the present invention;

[0038] Fig.13 It is a schematic diagram of the structure inside the filter assembly of the present invention.

[0039] Figure numerals: 1, base; 11, workbench; 12, X mover; 13, Z mover; 14, Y mover; 2, grinding drive mechanism; 21, fixed block; 211, NFC reader; 22, driver; 23, hollow transmission shaft; 231, air hole; 24, air guide ring; 25, sub-buckle assembly; 251, fixed disk; 252, pin block; 26, hose; 27, transmission pipe; 28, air compressor; 3, grinding mechanism; 31, hollow ring; 32, ring-type annular grinding wheel; 33, one-way exhaust valve; 34, hollow transmission shaft; 35, female buckle assembly; 351, concave disk; 352, L-shaped plug block; 36, stretching rod; 37, air release assembly; 371, exhaust pipe; 372, exhaust hole; 4, cleaning mechanism; 41, box body; 42, inventory display assembly; 421, cover plate; 422, indicator light; 423, NFC electronic tag; 43, storage assembly; 431, storage box; 432, exhaust block; 433, fixing assembly; 4331, elastic block; 4332, protective cover; 4333, roller; 434, weight detector; 435, pressure switch; 436, guide assembly; 4361, top cover; 4362, guide cylinder; 44, square tube; 45, air flow control assembly; 451, three-way pipe; 452, solenoid valve; 453, conduit; 46, filter assembly; 461, filter box; 462, protective door; 463, exhaust port; 464, filter screen; 465, activated carbon rod; 47, circulation pump; 48, multi-way pipe; 481, gas pipeline. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution 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 part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] The present invention will be further described below in conjunction with the embodiments.

[0042] Example: Refer to Figures 1 to 13 , a multi-axis automatic centering grinding machine, comprising:

[0043] A base 1, a workbench 11 is fixedly connected to the upper end surface of the base 1, and an X mover 12, a Z mover 13 and a Y mover 14 are installed in the base 1;

[0044] The grinding drive mechanism 2 includes a fixed block 21 fixedly connected to the moving end of the Z mover 13, an NFC reader 211 fixedly connected to the bottom of the fixed block 21, a driver 22 fixedly connected to the side of the fixed block 21, a hollow transmission shaft 23 fixedly connected to the output end of the driver 22, a sub-button assembly 25 is provided at the other end of the hollow transmission shaft 23, and an air compressor 28 connected to the hollow transmission shaft 23 is provided on the side of the Z mover 13;

[0045] The grinding mechanism 3 has multiple parts which are arranged one by one inside the storage component 43. The grinding drive mechanism 2 is locked and connected with any one of the grinding mechanisms 3. The grinding mechanism 3 includes a female buckle component 35. A hollow transmission shaft 34 is arranged at the bottom of the female buckle component 35. The other end of the hollow transmission shaft 34 is fixedly connected with a hollow ring 31. The outer peripheral surface of the hollow ring 31 is movably connected with a ring-type annular grinding wheel 32 through a snap-fit ​​movably sleeve. The mesh counts of the ring-type annular grinding wheels 32 in the multiple grinding mechanisms 3 are inconsistent.

[0046] The NFC reader 211 in the grinding drive mechanism 2 can read the storage position of the grinding mechanisms 3 with different meshes in the cleaning mechanism 4, helping the driver 22 to quickly obtain the required grinding mechanism 3. The air compressor 28 supplies air to the hollow transmission shaft 23 to control the temperature and deformation of the grinding mechanism 3 when facing different grinding. The grinding mechanism 3 can selectively clamp the ring-type annular grinding wheel 32 with different meshes through the hollow ring 31 to adapt to the needs of the workpiece at different stages.

[0047] Reference Figures 3 to 6The outer circumference of the hollow transmission shaft 23 is provided with a plurality of air holes 231 in an annular array. The outer circumference of the hollow transmission shaft 23 located at the air holes 231 is connected to an air guide ring 24 in an airtight rotation manner, and the air guide ring 24 is communicated with the air holes 231. The outer circumference of the air guide ring 24 is fixedly connected with a hose 26. An air compressor 28 is fixedly connected to the side of the Z mover 13. The output end of the air compressor 28 is fixedly connected with a transmission pipe 27. The other end of the transmission pipe 27 passes through the Z mover 13 and is communicated with the hose 26.

[0048] The buckle assembly 25 includes a fixed plate 251 fixedly connected to the outer circumference of the hollow transmission shaft 23 near the lower position, and a plurality of pin blocks 252 are fixedly connected to the outer circumference of the fixed plate 251 in an annular array.

[0049] The high-pressure gas generated by the air compressor 28 can be transmitted to the hollow transmission shaft 23 through the air hole 231 by using the air guide ring 24. Since the air guide ring 24 and the outer peripheral surface of the hollow transmission shaft 23 are airtightly rotatably connected, when the air guide ring 24 transmits the high-pressure gas to the hollow transmission shaft 23, the driver 22 drives the hollow transmission shaft 23 to rotate, and the air guide ring 24 does not need to rotate synchronously with the hollow transmission shaft 23.

[0050] Reference Fig. 9 , further comprising a cleaning mechanism 4, the cleaning mechanism 4 comprising a box body 41 fixedly connected to the upper end surface of the base 1, the upper end surface of the box body 41 is provided with an inventory display component 42, a plurality of storage components 43 are provided in a linear array at the inner bottom of the box body 41, and a circulation pump 47 and a filter component 46 interconnected with each storage component 43 are provided on the side of the base 1;

[0051] The inventory display component 42 includes a cover plate 421 fixedly connected to the upper end surface of the box body 41, and a plurality of indicator lights 422 and a plurality of NFC electronic tags 423 are fixedly connected to the upper end surface of the cover plate 421. The indicator lights 422, NFC electronic tags 423 and storage components 43 correspond one to one.

[0052] The indicator light 422 in the inventory display component 42 can be used to display whether the grinding mechanism 3 in the corresponding storage component 43 exists and the wear and tear of the grinding mechanism 3, and the NFC electronic tag 423 contains the mesh number and position of the corresponding grinding mechanism 3, so that the grinding drive mechanism 2 can quickly obtain the required grinding mechanism 3.

[0053] Reference Figures 10 to 12The storage assembly 43 includes a storage box 431 fixedly connected to the bottom of the box body 41, and exhaust blocks 432 are fixedly connected to the four corners of the bottom of the storage box 431. A fixing assembly 433 is provided on any inner side wall of the storage box 431. The fixing assembly 433 includes an elastic block 4331 fixedly connected to the inner wall of the storage box 431, and a protective cover 4332 is fixedly connected to the other side of the elastic block 4331. A roller 4333 is rotatably connected in the open end of the protective cover 4332. A weight detector 434 and a pressure switch 435 are fixedly connected to the inner bottom of the storage box 431;

[0054] A guide assembly 436 is provided on the upper end surface of the storage box 431. The guide assembly 436 includes a top cover 4361 fixedly connected to the upper end surface of the storage box 431. A guide tube 4362 is fixedly connected to the center position of the upper end surface of the top cover 4361. The other end of the guide tube 4362 passes through the cover plate 421.

[0055] The replaced grinding mechanism 3 is cleaned by the exhaust block 432 in the storage assembly 43 with the help of the suction transmitted by the circulating pump 47. The pressure switch 435 can control the opening and closing of the output end of the electromagnetic valve 452. When the replaced grinding mechanism 3 returns to the storage box 431, it squeezes it, so that the electromagnetic valve 452 is temporarily opened to allow the suction to enter the exhaust block 432, and the indicator light 422 displays different colors when the pressure switch 435 is pressed and released. The weight detector 434 detects the weight of the replaced grinding mechanism 3 to judge the loss. When the loss reaches the discard value, the indicator light 422 changes color to remind the manual replacement of the ring-shaped annular grinding wheel 32.

[0056] Reference Figure 10 to Figure 11 Two square tubes 44 are fixedly connected to the side of the box body 41. An airflow control component 45 corresponding to the number and position of the storage components 43 is arranged on the side of the box body 41 away from the workbench 11. The airflow control component 45 includes a three-way pipe 451 fixedly connected to the side of the box body 41. The two square tubes 44 pass through the box body 41 and are connected to the two output ends of the three-way pipe 451. One input end of the three-way pipe 451 is fixedly connected to a solenoid valve 452 through a pipeline.

[0057] The two square tubes 44 can be used to transport the suction force inside the solenoid valve 452 through the three-way pipe 451 and evenly transmit it to the exhaust blocks 432 at the four corners, so that the exhaust blocks 432 can absorb impurities in the ring-shaped grinding wheel 32.

[0058] Reference Figure 2 , Fig.11 , Fig.13The filter assembly 46 includes a filter box 461 fixedly connected to the side of the base 1, the filter box 461 has an opening on the side away from the base 1, a protective door 462 is hingedly connected to the opening of the filter box 461, an exhaust port 463 is installed at the lower position of the protective door 462, a filter net 464 is movably connected to the upper position of the inside of the filter box 461, and a plurality of activated carbon rods 465 are movably connected to the rectangular array at the inner bottom of the filter box 461.

[0059] The circulation pump 47 is fixedly connected to the upper end surface of the filter box 461, and the input end of the circulation pump 47 is connected to the inside of the filter box 461 through a pipeline. The output end of the circulation pump 47 is fixedly connected to the multi-way tube 48 through a pipeline. The multi-way tube 48 has an output end and multiple input ends. The output end of the circulation pump 47 is connected to the air supply pipe 481. The number of input ends of the multi-way tube 48 is consistent with the number of storage components 43. The output end of the solenoid valve 452 is fixedly connected to the conduit 453, and the conduit 453 is connected to the input end of the multi-way tube 48.

[0060] The filter assembly 46 can be used to filter impurities in the ring-shaped annular grinding wheel 32 sucked by the circulation pump 47, thereby preventing the impurities in the ring-shaped annular grinding wheel 32 sucked by the circulation pump 47 from being directly discharged into the natural environment and affecting the environment.

[0061] Reference Figures 7 and 8 The female buckle assembly 35 includes a concave plate 351 slidably connected to the fixed plate 251, and the inner wall of the concave plate 351 is fixedly connected to an L-shaped plug block 352 with the same number of pin blocks 252 in an annular array. The pin block 252 is slidably engaged with the inner groove of the L-shaped plug block 352. The hollow transmission shaft 34 is fixedly connected to the center position of the upper end surface of the hollow ring 31. The upper end surface of the hollow ring 31 is fixedly connected to a plurality of one-way exhaust valves 33 in an annular array with the hollow transmission shaft 34 as the center. The hollow ring 3 A gas release component 37 is disposed inside the hollow transmission shaft 34. The gas release component 37 includes an exhaust pipe 371 fixedly connected to the inside of the hollow ferrule 31. A plurality of exhaust holes 372 are fixedly connected to the outer peripheral surface of the exhaust pipe 371 in an annular array. The hollow transmission shaft 34 passes through the hollow ferrule 31 and is connected to the exhaust pipe 371. A stretching rod 36 corresponding to the one-way exhaust valve 33 is fixedly connected to the inside of the hollow ferrule 31, and one end of the stretching rod 36 is connected to the one-way exhaust valve 33.

[0062] Among them, a controller is installed on the side of the base 1, and the ring-type annular grinding wheel 32 of the grinding mechanism 3 in the cleaning mechanism 4 is in contact with the fixing component 433, the weight detector 434, and the pressure switch 435, and the weight detector 434, the pressure switch 435, the NFC reader 211, the NFC electronic tag 423, the indicator light 422 and the solenoid valve 452 are electrically connected to the controller.

[0063] By utilizing the clamping connection between the L-shaped plug block 352 and the pin block 252 in the female buckle assembly 35, the grinding drive mechanism 2 can quickly load and unload the grinding mechanism 3, and the air release assembly 37 can release the high-pressure gas transmitted by the hollow transmission shaft 34 into the hollow ring 31, thereby increasing the air pressure in the hollow ring 31. The one-way exhaust valve 33 is used to discharge the gas delivered to the hollow ring 31, thereby cooling the hollow ring 31, and the stretching rod 36 is used to pull the valve of the one-way exhaust valve 33. The stretching rod 36 is made of a heat-sensitive material, so that when the ring-type annular grinding wheel 32 grinds the workpiece and the temperature continues to rise, the extensibility of the stretching rod 36 becomes higher and higher, thereby making the stretching rod 36 provide a weaker pulling force on the valve of the one-way exhaust valve 33, and the one-way exhaust valve 33 discharges more and more gas, thereby achieving the control of the temperature and air pressure corresponding to the hollow ring 31 according to the temperature of the ring-type annular grinding wheel 32.

[0064] The operating principle of this embodiment is as follows:

[0065] Step 1: First, the staff will prepare a plurality of grinding mechanisms 3 and put them into the corresponding storage components 43 in the box body 41 (the difference between the plurality of grinding mechanisms 3 is that the mesh numbers of the ring-shaped annular grinding wheels 32 therein are inconsistent, and the specific mesh numbers can be customized according to the workpiece material currently being ground). When the grinding mechanism 3 enters the corresponding storage component 43, the weight detector 434 in the storage component 43 will be calibrated to zero, and the pressure switch 435 will be in an initial untriggered state (the pressure switch 435 squeezed by the grinding mechanism 3 before the equipment is started is in an initial untriggered state, that is, the pressure switch 435 is in an unpowered state before it is started, and the pressure switch 435 squeezed by the grinding mechanism 3 in the unpowered state will not be in When the pressure switch 435 is powered on, it will not execute the trigger command in the non-powered state. When the pressure switch 435 is powered on, once the grinding mechanism 3 is disengaged, the pressure switch 435 is squeezed again, and the pressure switch 435 is in the triggered state. At the same time, the grinding mechanism 3 will squeeze the fixed component 433, so that the elastic block 4331 in the fixed component 433 is in a compressed state, and the roller 4333 uses the reaction force generated by the compression of the elastic block 4331 to apply pressure to the grinding mechanism 3, so that the grinding mechanism 3 is clamped in the storage box 431. When the fixed component 433 clamps the grinding mechanism 3, the roller 4333 in the fixed component 433 is subjected to downward pressure and rotates in the protective cover 4332.

[0066] When the grinding mechanism 3 is completely placed in the storage component 43, the indicator light 422 corresponding to the grinding mechanism 3 on the cover plate 421 of the inventory display component 42 lights up;

[0067] The indicator light 422 has multiple colors, and each color represents a different state of the corresponding grinding mechanism 3, for example:

[0068] The indicator light 422 is not on: it indicates that the grinding mechanism 3 is not completely placed in the storage assembly 43, that is, the surface grinding mechanism 3 is not completely in contact with the weight detector 434 and the pressure switch 435, and the staff needs to correct it or put it in again;

[0069] The indicator light 422 shows a green light: indicating that the grinding mechanism 3 is completely placed in the storage assembly 43;

[0070] The indicator light 422 displays a red light: indicating that the grinding mechanism 3 is in a cleaning state in the storage component 43;

[0071] The indicator light 422 displays a yellow light: indicating that the grinding mechanism 3 is excessively worn and the ring-shaped annular grinding wheel 32 needs to be replaced.

[0072] Note: The above is an example to illustrate that which display color of the specific indicator light 422 represents which state of the grinding mechanism 3 is customized by the staff in the controller (the controller is a prior art and is used to control the overall operation of the equipment in this solution).

[0073] The NFC electronic tag 423 corresponding to the grinding mechanism 3 stores the initial information of the grinding mechanism 3 in the corresponding storage component 43, such as the number of grinding wheels, the last use time, the estimated remaining life, etc.

[0074] Among them, the fixed block 21 of the grinding drive mechanism 2 is installed at the moving end of the Z mover 13, the NFC reader 211 at the bottom is in standby state, ready to read information at any time, and the hollow transmission shaft 23 connected to the output end of the driver 22 is indirectly connected to the external air compressor 28 through the air guide ring 24 connected by airtight rotation. There is no air pressure in the transmission pipe 27, the hose 26 and the hollow transmission shaft 23 (before the equipment is started), and the sub-buckle assembly 25 is waiting to dock with the female buckle assembly 35 of one of the grinding mechanisms 3.

[0075] The controller stores the parameters of each stage of grinding of workpieces of different materials, such as grinding speed, grinding accuracy, grinding depth, etc., so as to determine the mesh size and replacement time of the ring-type annular grinding wheel 32 required for different grinding stages. These parameters are stored in the memory of the controller and are correlated with the information in the inventory display component 42, so as to accurately select the appropriate grinding mechanism 3 during the processing process.

[0076] Step 2: After the grinding mechanisms 3 are placed in their respective storage components 43, the workpiece to be ground is clamped on the workbench 11 by a fixture (the fixture used to clamp the workpiece is the existing technology, such as: flat-nose pliers, three-jaw chuck, dividing head fixture, etc., so it is not drawn in the figure). After the workpiece is clamped, the staff selects the parameters of the current workpiece in the controller, and then the equipment is started. At this time, the grinding drive mechanism 2 moves to the storage component 43 position at the beginning of the X mover 12, the Z mover 13 and the Y mover 14, and then the NFC reader 211 of the grinding drive mechanism 2 starts to work and starts to read the NFC electronic tags in the inventory display component 42 in turn. 423, when the NFC reader 211 reads the information in the corresponding NFC electronic tag 423, the position of the corresponding grinding mechanism 3 is obtained, and when the grinding drive mechanism 2 is close to the target grinding mechanism 3, the Z mover 13 drives the grinding drive mechanism 2 to start to slowly rotate forward, and then the Z mover 13 drives the grinding drive mechanism 2 to descend, so that the sub-button assembly 25 and the female buckle assembly 35 are docked and locked, and then the grinding drive mechanism 2 The corresponding grinding mechanism 3 of the mesh number is completed, and then the X mover 12, the Z mover 13 and the Y mover 14 are controlled by the controller to control the grinding drive mechanism 2 and the grinding mechanism 3 locked with it to grind the current workpiece;

[0077] At the same time, the air compressor 28 is started, and the generated high-pressure gas enters the hollow transmission shaft 23 through the transmission pipe 27, the hose 26, the air guide ring 24 and the air holes 231 on the outer peripheral surface of the hollow transmission shaft 23, and then enters the hollow transmission shaft 34 of the grinding mechanism 3, and finally reaches the hollow ring 31.

[0078] Among them, the driver 22 drives the hollow transmission shaft 23 to drive the ring-type annular grinding wheel 32 to rotate at high speed and start grinding the workpiece. During the grinding process, as the grinding proceeds, the friction between the ring-type annular grinding wheel 32 and the workpiece generates a large amount of heat, causing the temperature of the grinding wheel to rise, thereby causing the temperature in the hollow ring 31 to rise, and then causing the stretching rod 36 made of the heat-sensitive material to begin to elongate due to the heat. The elongation of the stretching rod 36 changes the valve cover tension on the one-way exhaust valve 33. When the temperature rises to a certain level, that is, the tension of the stretching rod 36 on the valve is less than the valve cover pressure of the air pressure in the hollow ring 31 on the one-way exhaust valve 33, the one-way exhaust valve 33 begins to open (the one-way exhaust valve 33 is in a closed state through the stretching rod 36 in the initial state).

[0079] The gas in the hollow ring 31 is discharged through the one-way exhaust valve 33, thereby releasing the heat in the hollow ring 31 and cooling the ring-shaped annular grinding wheel 32. At the same time, the flow rate and speed of the exhaust gas will be automatically adjusted according to the elongation of the stretch rod 36 (i.e., temperature change), forming a closed-loop temperature control system. When the temperature of the grinding wheel decreases, the stretch rod 36 contracts, and the pulling force on the valve increases. When the pulling force is greater than the air pressure, the one-way exhaust valve 33 is closed, and the exhaust stops, maintaining a certain air pressure in the hollow ring 31, ensuring that the grinding wheel works under appropriate temperature and air pressure conditions, preventing problems such as aggravated grinding wheel wear and thermal deformation of the workpiece due to excessive temperature, and also avoiding the impact of excessive cooling on grinding efficiency and processing accuracy.

[0080] Among them, when the workpiece grinding enters different stages, according to the parameters set in the controller, when it is necessary to replace the grinding wheel with a different mesh size, the equipment suspends the grinding process. During the replacement of the grinding wheel, the X mover 12, the Z mover 13 and the Y mover 14 move the used grinding mechanism 3 in the driver 22 of the grinding drive mechanism 2 to its original storage component 43. At this time, the driver 22 slowly rotates in the opposite direction, so that the driver 22 is separated from the used grinding mechanism 3, and then the grinding drive mechanism 2 repeats the above steps of selecting and obtaining the grinding mechanism 3. The controller selects the grinding mechanism 3 with a suitable mesh size and controls the grinding drive mechanism 2 to complete the installation of the new grinding mechanism 3, thereby realizing the need to replace the ring-type annular grinding wheel 32 with different mesh sizes during the workpiece grinding process.

[0081] When the used grinding mechanism 3 returns to the storage box 431 in the corresponding storage component 43, its ring-shaped annular grinding wheel 32 contacts the fixed component 433 in the storage box 431, triggering the weight detector 434 to detect the current weight of the grinding mechanism 3. The weight detector 434 transmits the detected weight data to the controller, and the controller compares it with the initial weight data of the grinding mechanism 3 stored in advance, calculates the wear amount of the grinding wheel, and determines whether the grinding wheel needs to be replaced according to the wear threshold;

[0082] At the same time, the weight of the grinding mechanism 3 presses the pressure switch 435, and the pressure switch 435 triggers an electrical signal, which is transmitted to the corresponding solenoid valve 452, causing the solenoid valve 452 to open briefly for a preset time to prepare for subsequent cleaning work.

[0083] Step 3: After the solenoid valve 452 is turned on, the circulation pump 47 starts to generate suction, which is transmitted to the exhaust block 432 through the multi-way pipe 48, the conduit 453, the three-way pipe 451 and the square pipe 44. The suction generated by the exhaust block 432 acts on the ring-shaped grinding wheel 32 to absorb the debris, dust and other impurities attached to the surface of the grinding wheel during the grinding process. The impurities pass through the circulation pump 47 with the air flow and then enter the filter assembly 46. In the filter assembly 46, the filter screen 464 first intercepts larger particles of impurities, and the activated carbon rod 465 further absorbs the tiny particles. The clean air after filtering is discharged into the external environment through the exhaust port 463 on the protective door 462 to avoid pollution to the environment. After cleaning, the pressure switch 435 is restored to its original state, the solenoid valve 452 is closed, and the circulation pump 47 stops working. The grinding mechanism 3 waits for the next use or performs maintenance operations such as grinding wheel replacement under the prompt of the indicator light 422 according to the loss detected by the weight detector 434. At the same time, the equipment continues to select a new grinding mechanism 3 for grinding operation according to the processing requirements, and repeats the above-mentioned whole process.

[0084] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A multi-axis automatic centering grinding machine, characterized in that: include: A base (1), the upper end surface of the base (1) being fixedly connected to a workbench (11), and an X mover (12), a Z mover (13) and a Y mover (14) being installed in the base (1); A grinding drive mechanism (2), the grinding drive mechanism (2) comprising a fixed block (21) fixedly connected to a moving end of a Z mover (13), an NFC reader (211) fixedly connected to the bottom of the fixed block (21), a driver (22) fixedly connected to the side of the fixed block (21), an output end of the driver (22) fixedly connected to a hollow transmission shaft (23), a sub-button assembly (25) being provided at the other end of the hollow transmission shaft (23), and an air compressor (28) being provided on the side of the Z mover (13) and being in communication with the hollow transmission shaft (23); The grinding mechanisms (3) are provided in a plurality and arranged one by one inside the storage assembly (43); the grinding drive mechanism (2) is locked and connected to any one of the grinding mechanisms (3); the grinding mechanism (3) comprises a female buckle assembly (35); a hollow transmission shaft (34) is provided at the bottom of the female buckle assembly (35); the other end of the hollow transmission shaft (34) is fixedly connected to a hollow ferrule (31); a ferrule-type annular grinding wheel (32) is movably sleeved on the outer peripheral surface of the hollow ferrule (31) via a snap-fit; the mesh counts of the ferrule-type annular grinding wheels (32) in the plurality of grinding mechanisms (3) are inconsistent; The outer circumference of the hollow transmission shaft (23) is provided with a plurality of air holes (231) in an annular array, the outer circumference of the hollow transmission shaft (23) is airtightly rotatably connected to an air guide ring (24), and the air guide ring (24) is in communication with the air hole (231), the outer circumference of the air guide ring (24) is fixedly connected to a hose (26), the air compressor (28) is fixedly connected to a side of the Z mover (13), the output end of the air compressor (28) is fixedly connected to a transmission pipe (27), and the other end of the transmission pipe (27) passes through the Z mover (13) and is in communication with the hose (26); The sub-buckle assembly (25) comprises a fixed disk (251) fixedly connected to the outer circumference of the hollow transmission shaft (23) near the lower position, and a plurality of pin blocks (252) are fixedly connected to the outer circumference of the fixed disk (251) in an annular array.

2. The multi-axis automatic centering grinding machine according to claim 1, characterized in that: It also comprises a cleaning mechanism (4), the cleaning mechanism (4) comprising a box body (41) fixedly connected to the upper end surface of the base (1), the upper end surface of the box body (41) being provided with an inventory display component (42), a plurality of storage components (43) being provided in a linear array at the inner bottom of the box body (41), and a circulation pump (47) and a filter component (46) being provided on the side surface of the base (1) and being interconnected with each storage component (43); The inventory display component (42) comprises a cover plate (421) fixedly connected to the upper end surface of the box body (41); a plurality of indicator lights (422) and a plurality of NFC electronic tags (423) are fixedly connected to the upper end surface of the cover plate (421); the indicator lights (422), the NFC electronic tags (423) and the storage component (43) correspond one to one.

3. The multi-axis automatic centering grinding machine according to claim 2, characterized in that: The storage assembly (43) comprises a storage box (431) fixedly connected to the inner bottom of the box body (41); the four corners of the inner bottom of the storage box (431) are fixedly connected to exhaust blocks (432); any inner side wall of the storage box (431) is provided with a fixing assembly (433); the fixing assembly (433) comprises an elastic block (4331) fixedly connected to the inner wall of the storage box (431); the other side of the elastic block (4331) is fixedly connected to a protective cover (4332); a roller (4333) is rotatably connected in the open end of the protective cover (4332); and a weight detector (434) and a pressure switch (435) are fixedly connected to the inner bottom of the storage box (431); The upper end surface of the storage box (431) is provided with a guide assembly (436), and the guide assembly (436) comprises a top cover (4361) fixedly connected to the upper end surface of the storage box (431), and a guide tube (4362) is fixedly connected to the center position of the upper end surface of the top cover (4361), and the other end of the guide tube (4362) is arranged to pass through the cover plate (421).

4. The multi-axis automatic centering grinding machine according to claim 3, characterized in that: Two square tubes (44) are fixedly connected to the side of the box (41); an airflow control assembly (45) corresponding in number and position to the storage assemblies (43) is arranged on the side of the box (41) away from the workbench (11); the airflow control assembly (45) comprises a three-way pipe (451) fixedly connected to the side of the box (41); the two square tubes (44) penetrate the box (41) and are connected to two output ends of the three-way pipe (451); and one input end of the three-way pipe (451) is fixedly connected to a solenoid valve (452) via a pipeline.

5. The multi-axis automatic centering grinding machine according to claim 4, characterized in that: The filter assembly (46) comprises a filter box (461) fixedly connected to a side of the base (1); the filter box (461) has an opening on a side away from the base (1); a protective door (462) is hingedly connected to the opening of the filter box (461); an exhaust port (463) is installed at a lower position of the protective door (462); a filter screen (464) is movably connected at an upper position inside the filter box (461); and a plurality of activated carbon rods (465) are movably connected in a rectangular array at the inner bottom of the filter box (461).

6. The multi-axis automatic centering grinding machine according to claim 5, characterized in that: The circulation pump (47) is fixedly connected to the upper end surface of the filter box (461); the input end of the circulation pump (47) is connected to the inside of the filter box (461) through a pipeline; the output end of the circulation pump (47) is fixedly connected to a multi-way pipe (48) through a pipeline; the multi-way pipe (48) has an output end and a plurality of input ends; the output end of the circulation pump (47) is connected to a gas delivery pipe (481); the number of input ends of the multi-way pipe (48) is the same as the number of storage components (43); the output end of the solenoid valve (452) is fixedly connected to a conduit (453); the conduit (453) is connected to the input end of the multi-way pipe (48).

7. The multi-axis automatic centering grinding machine according to claim 2, characterized in that: The female buckle assembly (35) comprises a concave disk (351) slidably connected to a fixed disk (251); an L-shaped plug-in block (352) having the same number of pin blocks (252) is fixedly connected to the inner wall of the concave disk (351) in an annular array; the pin blocks (252) are slidably engaged with the inner grooves of the L-shaped plug-in blocks (352); the hollow transmission shaft (34) is fixedly connected to the center position of the upper end surface of the hollow ring (31); the upper end surface of the hollow ring (31) is fixedly connected to a plurality of one-way exhaust valves (33) in an annular array with the hollow transmission shaft (34) as the center; the hollow ring ( 31) A gas release component (37) is disposed inside the hollow transmission shaft (34), the gas release component (37) comprising an exhaust pipe (371) fixedly connected to the inside of the hollow ferrule (31), a plurality of exhaust holes (372) are fixedly connected to the outer peripheral surface of the exhaust pipe (371) in an annular array, and the hollow transmission shaft (34) passes through the hollow ferrule (31) and is connected to the exhaust pipe (371), a stretching rod (36) corresponding to the one-way exhaust valve (33) is fixedly connected to the inside of the hollow ferrule (31), and one end of the stretching rod (36) is connected to the one-way exhaust valve (33); A controller is installed on the side of the base (1); a ring-shaped annular grinding wheel (32) of a grinding mechanism (3) in the cleaning mechanism (4) is in contact with a fixing component (433), a weight detector (434), and a pressure switch (435); and the weight detector (434), the pressure switch (435), the NFC reader (211), the NFC electronic tag (423), the indicator light (422), and the solenoid valve (452) are electrically connected to the controller.

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