An automated grinding device for the inner hole of a nut

Abstract

The present invention discloses an automatic grinding device for the inner hole of a nut, comprising: a nut distribution member, which includes a nut distribution support member, a nut distribution sorting member, and a nut transfer member; a nut collection member, which includes a collection support member, a collection rotating member, and a collection workpiece to be ground. The collection rotating member drives the collection workpiece to be ground to continuously operate on the collection support member. During the continuous operation, the collection workpiece to be ground collects the nuts transferred by the nut transfer member; a nut grinding member, which includes a grinding support member, a grinding rotating member, and a retractable grinding member. The grinding rotating member drives the retractable grinding member to continuously operate on the grinding support member. After running to a predetermined position, the retractable grinding member inserts into the inner hole of the nut in the synchronously running collection workpiece to be ground for grinding. The structure of the present invention is simple, the design is reasonable, the degree of automation is high, the grinding efficiency is high, and it can only grind and deburr the inner hole of the nut, with little impact on the fitting accuracy and assembly reliability of the screw hole.

Description

Technical Field

[0001] The present invention relates to the technical field of fastener grinding and deburring, and more specifically, the present invention relates to an automatic grinding device for the inner hole of a nut. Background Art

[0002] A bolt fastener, referred to as a bolt, is the most common and widely used type of fastener in the field of mechanical fixed installation. A bolt mainly consists of a screw and a nut that mates with the screw; among them, the nut is machined with an internal thread hole. In the actual machining process, burrs are inevitably generated in the internal thread hole of the nut. In order not to affect the mating effect between the nut and the screw, it is generally necessary to remove the burrs.

[0003] The burrs in the internal thread hole of the nut are internal hole burrs. Removing internal hole burrs has always been a difficult problem in workpiece machining. The existing technologies for removing internal hole burrs mainly include fluid polishing removal method, electrolytic polishing removal method, magnetic polishing removal method, vibration polishing removal method, thermal energy polishing removal method, etc.; although the above methods can effectively remove burrs to a great extent and the deburring efficiency is greatly enhanced, they are all random deburring methods, so they all have obvious disadvantages. For example, the fluid polishing removal method will grind the non-burr part while removing burrs, so it will affect the mating accuracy of the nut, and the electrolytic polishing removal method will erode the non-burr part while removing burrs, so it will also affect the mating accuracy of the nut.

[0004] Therefore, when deburring the internal thread hole of the nut, how to achieve batch continuous processing to ensure the deburring efficiency and not affect the mating accuracy of the nut and the reliability of assembly is a problem to be solved. Summary of the Invention

[0005] In order to overcome the above defects, the present invention provides an automatic grinding device for the inner hole of a nut, and specifically adopts the following technical solutions:

[0006] An automatic grinding device for the inner hole of a nut, comprising:

[0007] A nut distributor, which includes a nut distribution support member, a nut distribution sorting member, and a nut transfer member. The nut distribution sorting member applies a centripetal force to the nut on the nut distribution support member so that the nut enters the nut transfer member provided on the nut distributor one by one;

[0008] A nut collector, which is provided on the nut distributor and includes a collection support member, a collection rotating member, and a collection workpiece to be ground. The collection rotating member drives the collection workpiece to be ground to continuously run on the collection support member, and the collection workpiece to be ground collects the nuts transferred by the nut transfer member during the continuous running process;

[0009] A nut grinding part, which is arranged on the nut distributor, includes a grinding support part, a grinding rotating part and a retractable grinding part. The grinding rotating part drives the retractable grinding part to continuously operate on the grinding support part. After the retractable grinding part runs to a predetermined position, it is inserted into the inner hole of the nut in the synchronously running collection to-be-ground parts for grinding.

[0010] Preferably, the distribution support plate is arranged on the support bottom plate through the distribution support legs; the nut distribution and sorting part includes a thrust ball bearing, a nut distribution pipe, a nut distribution motor, a distribution spiral plate, a nut distribution protection pipe, a distribution relay pipe and a sorting stacking pipe. The thrust ball bearing is arranged on the nut distribution support part. One end of the nut distribution pipe is arranged on the thrust ball bearing. The nut distribution motor is arranged on the nut distribution support part, and the rotating shaft of the nut distribution motor penetrates through the nut distribution support part and is connected to one end face of the nut distribution pipe; the inner diameter of the nut distribution protection pipe is larger than the outer diameter of the nut distribution pipe, and one end of the nut distribution protection pipe is arranged on the nut distribution support part; one end of the distribution spiral plate is arranged on the inner wall of the other end of the nut distribution protection pipe, and the distribution spiral plate is embedded in the nut distribution pipe; one end of the distribution relay pipe is penetrated and arranged on the inner wall of the other end of the nut distribution protection pipe, and the penetration position of the distribution relay pipe on the nut distribution protection pipe corresponds to one end of the distribution spiral plate; the sorting stacking pipe is in a hexagonal tubular shape, one end of the sorting stacking pipe is vertically penetrated and arranged on the other end of the distribution relay pipe, and the distance from the other end of the sorting stacking pipe to the support bottom plate is not less than the width of one nut.

[0011] Preferably, the nut transfer part includes a transfer support plate, a transfer motor, a transfer rod and a nut gripper head. The transfer support plate is in a right-angled plate shape. One end of the transfer support plate is vertically arranged on the nut distribution support part. The transfer motor is arranged on the other side of the transfer support plate. One end of the transfer rod is horizontally and fixedly arranged on the free end of the rotating shaft of the transfer motor after penetrating through the transfer support plate; the nut gripper head includes a gripping pipe and a first magnetic coil. One end of the gripping pipe is arranged on the other end of the transfer rod, and the first magnetic coil is fixedly embedded in the gripping pipe.

[0012] Preferably, the collecting rotating member includes a driving transmission member, a driven transmission member, a relay transmission member, and a driving power member. The driving transmission member, the driven transmission member, the relay transmission member, and the driving power member are all arranged on the collecting support member. The driving transmission member includes a driving shaft, a driving synchronous pulley, and a driving gear. One end of the driving shaft penetrates through the collecting support member, and the driving shaft can rotate circumferentially on the collecting support member. The driving synchronous pulley is fixedly sleeved on the other end of the driving shaft, and the driving gear is fixedly sleeved on the driving shaft. The driven transmission member includes a driven shaft, a driven synchronous pulley, and a driven gear. One end of the driven shaft penetrates through the collecting support member, and the driven shaft can rotate circumferentially on the collecting support member. The driven synchronous pulley is fixedly sleeved on the other end of the driven shaft, and the driven gear is fixedly sleeved on the driven shaft. The relay transmission member includes a relay shaft, a relay synchronous pulley, and a relay gear. One end of the relay shaft penetrates through the collecting support member, the relay synchronous pulley is sleeved on the other end of the relay shaft, and the relay synchronous pulley can rotate circumferentially relative to the relay shaft. The relay gear is sleeved on the relay shaft, and the relay gear can rotate circumferentially relative to the relay shaft. At the same time, the relay gear meshes with the driven gears and the driving gear located on both sides. The driving power member includes a collecting driving motor, a collecting worm, and a collecting worm gear. The collecting driving motor is arranged on the collecting support member, the collecting worm is arranged on the rotating shaft of the collecting driving motor, the collecting worm gear is fixedly sleeved on the driving shaft, and the collecting worm gear meshes with the collecting worm. The same synchronous belt is sleeved outside the driving synchronous pulley, the driven synchronous pulley, and the relay synchronous pulley, and the synchronous belt meshes with the driving synchronous pulley and the driven synchronous pulley.

[0013] Preferably, the workpiece to be ground for collection includes a nut collection pipe, a nut blocking member, a nut pushing member, and a nut compacting member. A collection through hole is provided on the side wall of the nut collection pipe, and the nut collection pipe is vertically arranged on the synchronous belt. The nut blocking member includes a blocking fixed pipe, a first spring, and a blocking tongue. One end of the blocking fixed pipe penetrates through the nut collection pipe, and the blocking fixed pipe is located below the collection through hole. The first spring is embedded in the other end of the blocking fixed pipe. One end of the blocking tongue is provided with an inclined surface, and the other end of the blocking tongue is embedded in the pipe at one end of the blocking fixed pipe. Multiple sets of the nut blocking members are symmetrically distributed on the nut collection pipe. A compacting long through hole is provided on the side wall at the other end of the nut collection pipe, and multiple compacting long through holes are evenly distributed circumferentially on the nut collection pipe.

[0014] Preferably, the nut pusher includes a second magnetic coil, a nut pushing rod, and a nut pushing plate. The second magnetic coil is fixedly embedded in one end of the nut collecting tube. The nut pushing rod is embedded in the second magnetic coil. The nut pushing plate is horizontally arranged at the bottom end of the nut pushing rod.

[0015] Preferably, the nut compactor includes a compact bearing ring, a compact retractor, and a compact compression spring. The compact bearing ring is sleeved outside the nut collecting tube, and the compact bearing ring can axially move along the nut collecting tube. The compact retractor includes a retractor fixed tube, a retractor rod, a retractor spring, and a third magnetic coil. One end of the retractor fixed tube is arranged on the compact bearing ring. A limiting plate is fixedly sleeved on the retractor rod. The retractor rod is embedded in the retractor fixed tube, and one end of the retractor rod sequentially penetrates through the compact bearing ring and the compact long through hole and then extends into the nut collecting tube. The limiting plate limits the length of one end of the retractor rod extending into the nut collecting tube. The retractor spring is embedded in the retractor fixed tube, and one end of the retractor spring is connected to the limiting plate, and the other end of the retractor spring is fixedly connected to the inner wall of the retractor fixed tube. The third magnetic coil is fixedly embedded in the other end tube of the retractor fixed tube, and the third magnetic coil is sleeved outside the other end of the retractor rod. Multiple sets of the compact retractors are circumferentially and evenly distributed around the compact bearing ring, and the compact retractors correspond to the compact long through holes one by one. The compact compression spring is sleeved outside the nut collecting tube, and one end of the compact compression spring is connected to the compact retractor, and the other end of the compact compression spring is connected to the reverse support plate arranged at the other end of the nut collecting tube. Multiple sets of the parts to be ground for collection are arranged at equal intervals on the synchronous belt.

[0016] Preferably, the grinding rotating member includes a main grinding member, a driven grinding member, a relay grinding member, and a main grinding power member. The main grinding member, the driven grinding member, the relay grinding member, and the main grinding power member are all arranged on the grinding support member. The main grinding member includes a main grinding shaft, a main grinding synchronous pulley, and a main grinding gear. One end of the main grinding shaft penetrates through the grinding support member, and the main grinding shaft can rotate circumferentially on the grinding support member. The main grinding synchronous pulley is fixedly sleeved on the other end of the main grinding shaft, and the main grinding gear is fixedly sleeved on the main grinding shaft. The driven grinding member includes a driven grinding shaft, a driven grinding synchronous pulley, and a driven grinding gear. One end of the driven grinding shaft penetrates through the grinding support member, and the driven grinding shaft can rotate circumferentially on the grinding support member. The driven grinding synchronous pulley is fixedly sleeved on the other end of the driven grinding shaft, and the driven grinding gear is fixedly sleeved on the driven grinding shaft. The relay grinding member includes a relay grinding shaft, a relay grinding synchronous pulley, and a relay grinding gear. One end of the relay grinding shaft penetrates through the grinding support member, the relay grinding synchronous pulley is sleeved on the relay grinding shaft, and the relay grinding synchronous pulley can rotate relative to the relay grinding shaft circumferentially. At the same time, the relay grinding gear meshes with the main grinding gears on both sides and the driven grinding gears respectively. The same grinding synchronous belt is sleeved outside the main grinding synchronous pulley, the driven grinding synchronous pulley, and the relay grinding synchronous pulley. The main grinding power member includes a main grinding motor, a grinding worm, and a grinding worm wheel. The main grinding motor is arranged on the grinding support member, the grinding worm is arranged on the rotating shaft of the main grinding motor, the grinding worm wheel is fixedly sleeved on the main grinding shaft, and the grinding worm wheel meshes with the grinding worm.

[0017] Preferably, the retractable grinding member includes a grinding base, a grinding motor, a lateral adjustment member, and a vertical adjustment member. The grinding base is disposed on the grinding synchronous belt, the grinding motor is disposed on the grinding base, and the rotating shaft of the grinding motor penetrates through the grinding base. The lateral adjustment member includes a lateral adjustment groove, a lateral adjustment block, a first lateral adjustment spring, a second lateral adjustment spring, and a lateral adjustment rod. The center of the lateral adjustment groove is disposed on the rotating shaft of the grinding motor. The lateral adjustment block is fitted in the lateral adjustment groove. The first lateral adjustment spring is fitted in one end of the lateral adjustment groove, and one end of the first lateral adjustment spring is connected to one end face of the lateral adjustment groove, and the other end of the first lateral adjustment spring is connected to one end of the lateral adjustment block. The second lateral adjustment spring is fitted in the other end of the lateral adjustment groove, and one end of the second lateral adjustment spring is connected to the other end face of the lateral adjustment block. The lateral adjustment rod is an automatic telescopic rod. The base of the lateral adjustment rod is disposed on the other end face of the lateral adjustment groove. A pressure sensor is disposed at the top of the lateral adjustment rod. The lateral adjustment rod is connected to the other end of the second lateral adjustment spring through the pressure sensor.

[0018] Preferably, the vertical adjustment member includes a vertical adjustment fixed tube, a vertical adjustment sliding rod, a fourth magnetic coil, and a grinding rod. One end of the vertical adjustment fixed tube is disposed on the lateral adjustment block. One end of the vertical adjustment sliding rod is fitted in the vertical adjustment fixed tube, and the slider on the vertical adjustment sliding rod cooperates with the sliding groove on the inner wall of the vertical adjustment fixed tube. The fourth magnetic coil is fitted in the other end tube of the vertical adjustment fixed tube, and the fourth magnetic coil is sleeved outside the vertical adjustment sliding rod. One end of the grinding rod is vertically disposed on the other end of the vertical adjustment sliding rod. Multiple sets of the retractable grinding members are evenly distributed at equal intervals on the grinding synchronous belt, and the distance between adjacent two sets of the retractable grinding members is the same as the distance between adjacent two sets of the collecting members to be ground.

[0019] The present invention has at least the following beneficial effects:

[0020] 1) The automatic grinding device for the inner hole of the nut of the present invention has a simple structure, reasonable design, high automation degree, high grinding efficiency, can only grind and deburr the inner hole of the nut, and has little influence on the matching accuracy and assembly reliability of the screw hole.

[0021] 2) The automatic grinding device for the inner hole of the nut of the present invention is provided with a nut distribution and sorting member, a nut transfer member, a collection rotating member, a collection member to be ground, a grinding rotating member, and a retractable grinding member. The nut transfer member automatically transfers the nuts conveyed by the nut distribution and sorting member one by one into the collection member to be ground. When a collection member to be ground collects a predetermined number of nuts, the retractable grinding member automatically inserts into the inner holes of multiple nuts in the collection member to be ground that runs continuously at the same speed and in the same direction for grinding. After the nuts in the collection member to be ground are ground, the nuts are automatically released. This effectively improves the degree of automation and grinding efficiency of nut grinding, and only grinds the burrs on the inner hole of the nut, effectively reducing the impact on the fitting accuracy and assembly reliability of the nut.

[0022] Other advantages, objectives, and features of the present invention will be partially reflected by the following description, and partially will also be understood by those skilled in the art through the research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is the front view of the automatic grinding device for the inner hole of the nut of the present invention;

[0024] Figure 2 is the automatic grinding device for the inner hole of the nut of the present invention Figure 1 partial enlarged view of C therein;

[0025] Figure 3 is the automatic grinding device for the inner hole of the nut of the present invention Figure 1 partial enlarged view of D therein;

[0026] Figure 4 is the top view of the automatic grinding device for the inner hole of the nut of the present invention;

[0027] Figure 5 is the front view of the front end of the automatic grinding device for the inner hole of the nut of the present invention;

[0028] Figure 6 is the front-end three-dimensional structure schematic diagram of the automatic grinding device for the inner hole of the nut of the present invention;

[0029] Figure 7 is the automatic grinding device for the inner hole of the nut of the present invention Figure 6 partial enlarged view of E therein;

[0030] Figure 8 is the rear-end three-dimensional structure schematic diagram of the automatic grinding device for the inner hole of the nut of the present invention;

[0031] Figure 9 is the automatic grinding device for the inner hole of the nut of the present invention Figure 8 partial enlarged view of F therein;

[0032] Figure 10Automatic grinding device for the inner hole of the nut of the present invention Figure 8 Partial enlarged view of G in;

[0033] Figure 11 Automatic grinding device for the inner hole of the nut of the present invention Figure 4 Schematic diagram of the three-dimensional structure of the cross-section in the A-A direction in;

[0034] Figure 12 Automatic grinding device for the inner hole of the nut of the present invention Figure 11 Partial enlarged view of H in;

[0035] Figure 13 Automatic grinding device for the inner hole of the nut of the present invention Figure 12 Partial enlarged view of I in;

[0036] Figure 14 Automatic grinding device for the inner hole of the nut of the present invention Figure 12 Partial enlarged view of J in;

[0037] Figure 15 Automatic grinding device for the inner hole of the nut of the present invention Figure 1 Front view of the cross-section in the B-B direction in;

[0038] Figure 16 Automatic grinding device for the inner hole of the nut of the present invention Figure 15 Partial enlarged view of K in;

[0039] Figure 17 Schematic diagram of the three-dimensional structure for receiving and releasing the grinding piece in the automatic grinding device for the inner hole of the nut of the present invention;

[0040] Figure 18 Top view three-dimensional structure diagram for receiving and releasing the grinding piece in the automatic grinding device for the inner hole of the nut of the present invention.

[0041] Wherein: 1 - support base plate, 2 - distribution support plate, 3 - distribution support leg, 4 - thrust ball bearing, 5 - nut distribution pipe, 6 - nut distribution motor, 7 - distribution spiral plate, 8 - nut distribution protection pipe, 9 - distribution relay pipe, 10 - sorting and stacking pipe, 11 - transfer support plate, 12 - transfer motor, 13 - transfer rod, 14 - nut gripping head, 21 - driving synchronous pulley, 24 - driven synchronous pulley, 27 - relay synchronous pulley, 29 - synchronous belt, 30 - nut collection pipe, 31 - barrier fixing pipe, 32 - first spring, 33 - barrier tongue, 34 - second magnetic coil, 35 - nut pushing rod, 36 - nut pushing plate, 37 - compact bearing ring, 38 - compact compression spring, 39 - retractable fixing pipe, 40 - retractable rod, 41 - retractable spring, 42 - third magnetic coil, 43 - limit plate, 44 - reverse support plate, 51 - grinding driving synchronous pulley, 52 - grinding driving gear, 54 - grinding driven synchronous pulley, 55 - grinding driven gear, 57 - grinding relay synchronous pulley, 58 - grinding relay gear, 59 - grinding synchronous belt, 60 - grinding seat, 61 - grinding motor, 62 - horizontal adjustment groove, 63 - horizontal adjustment block, 64 - first horizontal adjustment spring, 65 - second horizontal adjustment spring, 66 - horizontal adjustment rod, 67 - pressure sensor, 68 - vertical adjustment fixing pipe, 69 - vertical adjustment sliding rod, 71 - grinding rod, 72 - nut, 73 - grinding relay transmission gear. Detailed implementation mode

[0042] The technical solutions of the present invention will be described in detail below by way of embodiments with reference to the accompanying drawings. It should be noted here that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation to the present invention.

[0043] The term "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, B exists alone, and A and B exist simultaneously. The term " / and" in this article is a description of another association object relationship, indicating that there can be two relationships. For example, A / and B can represent: A exists alone, and A and B exist alone. In addition, the character " / " in this article generally represents that the front and rear associated objects are an "or" relationship.

[0044] According to Figures 1 - 18As shown in the figure, an automatic grinding device for the inner hole of a nut includes a nut distributor, a nut collector, and a nut grinding member. The nut collector and the nut grinding member are both arranged on the nut distributor. The nut distributor includes a nut distribution support member, a nut distribution sorting member, and a nut transfer member. The nut distribution sorting member and the nut transfer member are both arranged on the nut distribution support member. The nut distribution support member includes a support bottom plate 1, a distribution support plate 2, and distribution support legs 3. The support bottom plate 1 is in the shape of a rectangular plate and is arranged on the ground. The distribution support plate 2 is arranged on the support bottom plate 1 through the distribution support legs 3. The nut distribution sorting member includes a thrust ball bearing 4, a nut distribution pipe 5, a nut distribution motor 6, a distribution spiral plate 7, a nut distribution protection pipe 8, a distribution relay pipe 9, and a sorting stacking pipe 10. The thrust ball bearing 4 is arranged on the distribution support plate 2. One end of the nut distribution pipe 5 is closed. One end of the nut distribution pipe 5 is horizontally arranged on the thrust ball bearing 4 and circumferentially rotates on the distribution support plate 2 through the thrust ball bearing 4. The nut distribution motor 6 is arranged on the bottom surface of the distribution support plate 2, and the rotating shaft of the nut distribution motor 6 penetrates through the distribution support plate 2 and is connected to one end surface of the nut distribution pipe 5. When the nut distribution motor 6 rotates, it will drive the nut distribution pipe 5 to rotate on the thrust ball bearing 4. The inner diameter of the nut distribution protection pipe 8 is larger than the outer diameter of the nut distribution pipe 5. The nut distribution protection pipe 8 is fixedly arranged on the distribution support plate 2, and the axis of the nut distribution protection pipe 8 coincides with the axis of the nut distribution pipe 5. The distribution spiral plate 7 is in the shape of a spiral strip. The outer diameter of the distribution spiral plate 7 is smaller than the inner diameter of the nut distribution pipe 5. One end of the distribution spiral plate 7 is fixedly arranged on the inner wall of the other end of the nut distribution protection pipe 8, and the distribution spiral plate 7 is embedded in the nut distribution pipe 5. At the same time, the axis of the distribution spiral plate 7 coincides with the axis of the nut distribution pipe 5. When the nut distribution motor 6 is started to drive the nut distribution pipe 5 to rotate, the nut 72 to be ground in the nut distribution pipe 5 will move from the other end of the distribution spiral plate 7 to one end of the distribution spiral plate 7 under the action of centrifugal force. The distribution spiral plate 7 and the nut distribution pipe 5 can rotate relative to each other circumferentially. The distribution relay pipe 9 is in the shape of a rectangular tube. One end of the distribution relay pipe 9 is penetrated and arranged on the inner wall of the other end of the nut distribution protection pipe 8, and the penetration of the distribution relay pipe 9 on the nut distribution protection pipe 8 corresponds to one end of the distribution spiral plate 7. The nut 72 moving upward from the distribution spiral plate 7 enters the distribution relay pipe 9 after moving to one end of the distribution spiral plate 7.The sorting and stacking tube 10 is hexagonal tubular. The inner diameter of the sorting and stacking tube 10 is not less than the outer diameter of the nut 72 to be polished. One end of the sorting and stacking tube 10 is vertically and penetratingly arranged on the other end of the distribution relay tube 9. The vertical distance from the other end of the sorting and stacking tube 10 to the support bottom plate 1 is not less than the width of one nut 72, so that the nut 72 in the distribution relay tube 9 can enter the sorting and stacking tube 10 and then be horizontally moved out one by one from the other end of the sorting and stacking tube 10, thereby transferring the nut 72 into the nut collection member.

[0045] The nut transfer member includes a transfer support plate 11, a transfer motor 12, a transfer rod 13 and a nut gripper 14. The transfer support plate 11 is in the shape of a right-angled plate. One end of the transfer support plate 11 is vertically and fixedly arranged on the distribution support plate 2. The transfer motor 12 is fixedly arranged on the other side of the transfer support plate 11, and the rotating shaft of the transfer motor 12 penetrates through the transfer support plate 11. One end of the transfer rod 13 is horizontally and fixedly arranged on the free end of the rotating shaft of the transfer motor 12. The nut gripper 14 includes a gripping tube and a first magnetic coil. One end of the gripping tube is horizontally and fixedly arranged on the other end of the transfer rod 13, and the first magnetic coil is fixedly embedded in the gripping tube.

[0046] When the nut 72 is exported from the other end of the sorting and stacking tube 10 to the support bottom plate 1, the first magnetic coil is energized with direct current to generate a magnetic field to adsorb the nut 72, and the transfer motor 12 is started to drive the transfer rod 13 to rotate circumferentially by 180 degrees to transfer the nut 72 into the nut collection member.

[0047] The nut collection member includes a collection support member, a collection rotating member and a collection piece to be ground. The collection rotating member is arranged on the collection support member, and the collection piece to be ground is arranged on the collection rotating member. The collection support member includes a first collection support plate, a first collection support leg, a second collection support plate, a second collection support leg and a third collection support plate. The first collection support plate is vertically arranged on the support bottom plate 1 through the first collection support leg. The second collection support leg is vertically arranged on the first collection support plate. The second collection support plate is arranged on the second collection support leg, and the second collection support plate is parallel to the first collection support plate. The third collection support plate is horizontally arranged at the top of the second collection support leg, and the third collection support plate is parallel to the second collection support plate.

[0048] The collecting rotating member includes a driving transmission member, a driven transmission member, a relay transmission member and a driving power member. The driving transmission member, the driven transmission member and the relay transmission member are all arranged on the second collecting support plate, and the driving power member is arranged on the first collecting support plate. The driving transmission member includes a driving shaft, a driving synchronous pulley 21 and a driving gear. One end of the driving shaft vertically penetrates through the second collecting support plate and is arranged on the first collecting support plate, and the other end of the driving shaft penetrates through the third collecting support plate, so that the driving shaft can rotate circumferentially on the first collecting support plate, the second collecting support plate and the third collecting support plate. The driving synchronous pulley 21 is arranged on the other end of the driving shaft. The driving gear is fixedly sleeved on the driving shaft. The driven transmission member includes a driven shaft, a driven synchronous pulley 24 and a driven gear. One end of the driven shaft is vertically arranged on the second collecting support plate, and the other end of the driven shaft vertically penetrates through the third collecting support plate, so that the driven shaft can rotate circumferentially on the second collecting support plate and the third collecting support plate. The driven synchronous pulley 24 is fixedly arranged on the other end of the driven shaft, and the driven gear is fixedly sleeved on the driven shaft. The relay transmission member includes a relay shaft, a relay synchronous pulley 27 and a relay gear. One end of the relay shaft is arranged on the second collecting support plate, and the other end of the relay shaft penetrates through the third collecting support plate. The relay shaft can rotate circumferentially on the second collecting support plate and the third collecting support plate. The relay gear is sleeved on the relay shaft, and the relay gear can rotate circumferentially relative to the relay shaft. At the same time, the relay gear is respectively meshed with the driving gear and the driven gear through the relay transmission gears on both sides. The relay synchronous pulley 27 is sleeved on the other end of the relay shaft, and the relay synchronous pulley 27 can rotate circumferentially relative to the relay shaft. The driving power member includes a collecting driving motor, a collecting worm and a collecting worm gear. The collecting driving motor is arranged on the first collecting support plate, the collecting worm is arranged on the rotating shaft of the collecting driving motor, the collecting worm gear is fixedly sleeved on the driving shaft, and the collecting worm gear is meshed with the collecting worm. The synchronous belt 29 is simultaneously sleeved outside the driving synchronous pulley 21, the driven synchronous pulley 24 and the relay synchronous pulley 27, and the synchronous belt 29 is used for arranging the workpiece to be ground for collection.

[0049] When the collecting driving motor rotates forward, it will drive the collecting worm gear to rotate forward through the collecting worm, and the collecting worm gear will drive the driving shaft to rotate forward. At this time, the driving shaft drives the synchronous belt to rotate forward through the driving synchronous pulley 21. At the same time, the driving shaft drives one of the relay transmission gears to rotate reversely through the driving gear, one of the relay transmission gears drives the relay gear to rotate forward, the relay gear drives the other relay transmission gear to rotate reversely, and the other relay transmission gear drives the driven gear to rotate forward. The driven gear drives the driven synchronous pulley 24 to rotate forward through the driven shaft. Furthermore, the driven synchronous pulley 24 and the driving synchronous pulley 21 drive the synchronous belt to rotate at the same time.

[0050] The workpiece to be ground collected includes a nut collecting pipe 30, a nut blocking member, a nut pushing member and a nut compacting member. The nut collecting pipe 30 is arranged on the collecting rotating member, and the nut blocking member, the nut pushing member and the nut compacting member are all arranged on the nut collecting pipe 30. The nut collecting pipe 30 is in a hexagonal tubular shape, and the inner diameter dimension of the nut collecting pipe 30 is not less than the outer dimension of the nut 72 to be polished. A collecting through hole is arranged on the side wall of the nut collecting pipe 30, and the size of the collecting through hole is not less than the size of the transverse projection plane of the nut 72. So that the nut 72 can enter the nut collecting pipe 30 through the collecting through hole. The nut collecting pipe 30 is vertically and fixedly arranged on the synchronous belt. The nut blocking member includes a blocking fixed pipe 31, a first spring 32 and a blocking tongue 33. One end of the blocking fixed pipe 31 is horizontally penetrated and arranged on the nut collecting pipe 30, and the blocking fixed pipe 31 is located below the collecting through hole. The first spring 32 is embedded in the other end of the blocking fixed pipe 31. The blocking tongue 33 is in a rectangular block shape. One end of the blocking tongue 33 is provided with an inclined surface, and the other end of the blocking tongue 33 is embedded in the pipe at one end of the blocking fixed pipe 31, so that the blocking tongue 33 is pushed by the first spring 32 to extend one end of the blocking tongue 33 into the nut collecting pipe 30. There are two sets of the nut blocking members, and the two sets of the nut blocking members are symmetrically distributed on the nut collecting pipe 30. So that the nut 72 entering the nut collecting pipe 30 through the collecting through hole can first stay horizontally on the inclined surface to prevent the nut 72 entering the nut collecting pipe 30 from tilting, so as to block the nut 72 from entering the other end pipe of the nut collecting pipe 30. Six compact long through holes are arranged on the side wall at the other end of the nut collecting pipe 30, and the six compact long through holes are evenly distributed in the circumferential direction of the nut collecting pipe 30.

[0051] The nut pusher includes a second magnetic coil 34, a nut push rod 35 and a nut push plate 36. The second magnetic coil 34 is fixedly embedded in one end of the nut collection tube 30. The nut push rod 35 is embedded in the second magnetic coil 34, and the nut push rod 35 can reciprocate axially in the second magnetic coil 34. The nut push plate 36 is horizontally arranged at the bottom end of the nut push rod 35. When a positive direct current is passed through the second magnetic coil 34, a magnetic field is generated to push the nut push rod 35 downward. The nut push rod 35 drives the nut push plate 36 to vertically push the nut 72 on the inclined surface into the other end of the nut collection tube 30. The nut pusher pushes the nuts 72 into the nut collection tube 30 one by one, and then stacks a plurality of the nuts 72 in the nut collection tube 30 for the nut grinding member to grind.

[0052] The nut compact member includes a compact bearing ring 37, a compact retracting and extending member, and a compact compression spring 38. The compact retracting and extending member is disposed on the compact bearing ring 37, and both the compact bearing ring 37 and the compact compression spring 38 are disposed on the nut collecting pipe 30. The compact bearing ring 37 is in a hexagonal ring shape, the inner diameter of the compact bearing ring 37 is larger than the outer diameter of the nut collecting pipe 30, and the compact bearing ring 37 is sleeved outside the nut collecting pipe 30. The compact retracting and extending member includes a retracting and extending fixed pipe 39, a retracting and extending rod 40, a retracting and extending spring 41, and a third magnetic coil 42. One end of the retracting and extending fixed pipe 39 is horizontally disposed on the compact bearing ring 37. A limiting plate 43 is fixedly sleeved on the retracting and extending rod 40. The retracting and extending rod 40 is embedded in the retracting and extending fixed pipe 39, and one end of the retracting and extending rod 40 extends into the nut collecting pipe 30 after passing through the compact long through hole. The limiting plate 43 can limit the length of one end of the retracting and extending rod 40 extending into the nut collecting pipe 30. So that the retracting and extending rod 40 can both carry and support the nut 72 in the nut collecting pipe 30 and avoid blocking the nut grinding member from inserting into the inner hole of the nut 72 for grinding. The retracting and extending spring 41 is embedded in the retracting and extending fixed pipe 39, and one end of the retracting and extending spring 41 is connected to the limiting plate 43, and the other end of the retracting and extending spring 41 is fixedly connected to the inner wall of the retracting and extending fixed pipe 39. The retracting and extending rod 40 is pushed by the retracting and extending spring 41 to extend into the nut collecting pipe 30 after passing through the compact long through hole. The third magnetic coil 42 is fixedly embedded in the other end pipe of the retracting and extending fixed pipe 39, and the third magnetic coil 42 is sleeved outside the other end of the retracting and extending rod 40. When direct current is passed through the third magnetic coil 42 to generate a magnetic field, the retracting and extending rod 40 will be pulled to move outward by compressing the spring, and then one end of the retracting and extending rod 40 will move out of the nut collecting pipe 30. At this time, the polished nut 72 in the nut collecting pipe 30 will slide out of the nut collecting pipe 30 under the action of gravity to complete the nut 72 polishing operation. Six sets of the compact retracting and extending members are provided, and the six sets of the compact retracting and extending members are evenly distributed circumferentially around the compact bearing ring 37, and the compact retracting and extending members correspond to the compact long through holes one by one. The inner diameter of the compact compression spring 38 is larger than the outer diameter of the nut collecting pipe 30. The compact compression spring 38 is sleeved outside the nut collecting pipe 30, and one end of the compact compression spring 38 is connected to the compact retracting and extending member, and the other end of the compact compression spring 38 is connected to a reverse support plate 44 provided at the other end of the nut collecting pipe 30. The reverse support plate 44 is in a ring plate shape. The compact compression spring 38 can vertically apply pressure to the nut 72 in the nut collecting pipe 30 through the compact retracting and extending member, so that a plurality of the nuts 72 in the nut collecting pipe 30 are closely attached to prevent the nut 72 from loosening during the grinding process by the nut grinding member, which affects the grinding quality.There are eight sets of the workpieces to be ground collected, and the eight sets of the workpieces to be ground are arranged at equal intervals on the synchronous belt.

[0053] The nut grinding member includes a grinding support member, a grinding rotating member, and a grinding retracting and extending member. The grinding support member is arranged on the support bottom plate 1, the grinding rotating member is arranged on the grinding support member, and the grinding retracting and extending member is arranged on the grinding rotating member. The grinding support member includes a first grinding support plate, a first grinding support leg, a second grinding support leg, a second grinding support plate, and a third grinding support plate. The first grinding support plate is arranged on the support bottom plate 1 through the first grinding support leg. The second grinding support leg is vertically and fixedly arranged on the first grinding support plate. The second grinding support plate is horizontally arranged on the second grinding support leg. The third grinding support plate is horizontally arranged at the top of the second grinding support leg, and the third grinding support plate is parallel to the second grinding support plate.

[0054] The grinding rotating member includes a driving grinding member, a driven grinding member, a relay grinding member, and a grinding driving power member. The driving grinding member, the driven grinding member, and the relay grinding member are all arranged on the second grinding support plate, and the driving power member is arranged on the first grinding support plate. The driving grinding member includes a driving grinding shaft, a driving grinding synchronous pulley 51, and a driving grinding gear 52. One end of the driving grinding shaft passes through the second grinding support plate and is arranged on the first grinding support plate, and the other end of the driving grinding shaft penetrates through the third grinding support plate, and the driving grinding shaft can rotate circumferentially on the first grinding support plate, the second grinding support plate, and the third grinding support plate. The driving grinding synchronous pulley 51 is arranged on the other end of the driving grinding shaft. The driving grinding gear 52 is fixedly sleeved on the driving grinding shaft. The driven grinding member includes a driven grinding shaft, a driven grinding synchronous pulley 54, and a driven grinding gear 55. One end of the driven grinding shaft is arranged on the second grinding support plate, the other end of the driven grinding shaft penetrates through the third grinding support plate, and the driven grinding shaft can rotate circumferentially on the second grinding support plate and the third grinding support plate. The driven grinding synchronous pulley 54 is fixedly arranged on the other end of the driven grinding shaft, and the driven grinding gear 55 is fixedly sleeved on the driven grinding shaft.

[0055] The relay grinding part includes a grinding relay shaft, a grinding relay synchronous pulley 57 and a grinding relay gear 58. One end of the grinding relay shaft is arranged on the second grinding support plate, and the other end of the grinding relay shaft penetrates through the third grinding support plate. Moreover, the grinding relay shaft can rotate circumferentially on the second grinding support plate and the third grinding support plate. The grinding relay synchronous pulley 57 is fixedly arranged on the other end of the grinding relay shaft, and the grinding relay synchronous pulley 57 can rotate circumferentially relative to the grinding relay shaft. The grinding relay gear 58 is sleeved on the grinding relay shaft, and the grinding relay gear 58 can rotate circumferentially relative to the grinding relay shaft. Meanwhile, the grinding relay gear 58 is respectively meshed with the grinding driving gear 52 and the grinding driven gear 55 through the grinding relay transmission gears 73 on both sides. A grinding synchronous belt 59 is sleeved outside the grinding driving synchronous pulley 51, the grinding driven synchronous pulley 54 and the grinding relay synchronous pulley 57. The grinding synchronous belt 59 is used to arrange the retractable grinding part.

[0056] The grinding driving power part includes a grinding driving motor, a grinding worm and a grinding worm wheel. The grinding driving motor is arranged on the first grinding support plate. The grinding worm is arranged on the rotating shaft of the grinding driving motor. The grinding worm wheel is fixedly sleeved on the grinding driving shaft, and the grinding worm wheel is meshed with the grinding worm. When the grinding driving motor is started, the grinding worm drives the grinding worm wheel to rotate forward, the grinding worm wheel drives the grinding driving shaft to rotate forward, and the grinding driving shaft directly drives the grinding synchronous belt 59 to rotate forward. Moreover, the grinding worm wheel drives the grinding driving gear 52 to rotate forward through the grinding driving shaft. The grinding driving gear 52 drives one of the grinding relay transmission gears 73 to rotate reversely. One of the grinding relay transmission gears 73 drives the grinding relay gear 58 to rotate forward. The grinding relay gear 58 drives the other grinding relay transmission gear 73 to rotate reversely. The other grinding relay transmission gear 73 drives the grinding driven gear 55 to rotate forward. The grinding driven gear 55 drives the grinding driven shaft to drive the grinding driven synchronous pulley 54 to rotate forward. Finally, the grinding driven synchronous pulley 54 and the grinding driving synchronous pulley 51 drive the grinding synchronous belt 59 to rotate forward simultaneously.

[0057] The retractable grinding member includes a grinding base 60, a grinding motor 61, a lateral adjustment member, and a vertical adjustment member. The grinding base 60 is arranged on the grinding synchronous belt 59. The grinding motor 61 is arranged on the grinding base 60. The lateral adjustment member is arranged on the grinding motor 61. The vertical adjustment member is arranged on the lateral adjustment member. The grinding base 60 is in a rectangular groove shape. One side of the grinding base 60 is vertically arranged on the grinding synchronous belt 59. The grinding motor 61 is arranged at the bottom of the groove of the grinding base 60, and the rotating shaft of the grinding motor 61 penetrates through the grinding base 60. The lateral adjustment member includes a lateral adjustment groove 62, a lateral adjustment block 63, a first lateral adjustment spring 64, a second lateral adjustment spring 65, and a lateral adjustment rod 66. The lateral adjustment groove 62 is in a rectangular groove shape. The lateral adjustment block 63 is embedded in the lateral adjustment groove 62 and can slide in the lateral adjustment groove 62. The first lateral adjustment spring 64 is embedded in one end of the lateral adjustment groove 62. One end of the first lateral adjustment spring 64 is connected to one end face of the lateral adjustment groove 62, and the other end of the first lateral adjustment spring 64 is connected to one end of the lateral adjustment block 63. The second lateral adjustment spring 65 is embedded in the other end of the lateral adjustment groove 62. One end of the second lateral adjustment spring 65 is connected to the other end face of the lateral adjustment block 63. The lateral adjustment rod 66 is an automatic telescopic rod. The base of the lateral adjustment rod 66 is horizontally and fixedly arranged on the other end face of the lateral adjustment groove 62. A pressure sensor 67 is arranged at the top of the lateral adjustment rod 66. The lateral adjustment rod 66 is connected to the other end of the second lateral adjustment spring 65 through the pressure sensor 67. When the lateral adjustment rod 66 extends, it will squeeze the second lateral adjustment spring 65 to move forward, and the second lateral adjustment spring 65 will push the lateral adjustment block 63 to slide in the lateral adjustment groove 62.

[0058] The vertical adjustment member includes a vertical adjustment fixing tube 68, a vertical adjustment sliding rod 69, a fourth magnetic coil, and a grinding rod 71. The vertical adjustment fixing tube 68 is arranged on the lateral adjustment block 63. The vertical adjustment sliding rod 69 and the fourth magnetic coil are both arranged inside the vertical adjustment fixing tube 68. One end of the vertical adjustment fixing tube 68 is vertically and fixedly arranged on the lateral adjustment block 63. One end of the vertical adjustment sliding rod 69 is fitted inside the vertical adjustment fixing tube 68, and a slider is arranged on one end of the vertical adjustment sliding rod 69. The slider cooperates with the chute on the inner wall of the vertical adjustment fixing tube 68, enabling the vertical adjustment sliding rod 69 to reciprocate axially inside the vertical adjustment fixing tube 68, and the vertical adjustment fixing tube 68 can drive the vertical adjustment sliding rod 69 to rotate circumferentially through the slider. The fourth magnetic coil is fixedly fitted inside the other end of the vertical adjustment fixing tube 68, and the fourth magnetic coil is sleeved outside the vertical adjustment sliding rod 69. One end of the grinding rod 71 is vertically and fixedly arranged on the other end of the vertical adjustment sliding rod 69. When direct current is passed through the fourth magnetic coil to generate a magnetic field, it will push the vertical adjustment sliding rod 69 upward until the grinding rod 71 is inserted into the nut 72 to be ground. Then, the contact force between the grinding rod 71 and the inner wall of the nut 72 is controlled by extending the lateral adjustment rod 66. When the grinding motor 61 is started, it will drive the grinding rod 71 to rotate around the axis of the grinding motor 61 through the lateral adjustment member to grind the inner hole of the nut 72. After the nut 72 is ground, passing reverse direct current through the fourth magnetic coil will pull the vertical adjustment sliding rod 69 into the vertical adjustment fixing tube 68, and the grinding rod 71 can be pulled out of the nut 72. After the nut 72 is ground, the compact retracting and releasing member releases the nut 72 from the nut collection tube 30.

[0059] There are eight sets of the retracting and grinding members, and the eight sets of the retracting and grinding members are equally spaced on the grinding synchronous belt 59, and the distance between adjacent two sets of the retracting and grinding members is the same as the distance between adjacent two sets of the collecting and to-be-ground members.

[0060] In order to continuously rotate the workpieces to be ground for continuous grinding of the nut 72, three nut distributors are arranged side by side. After a nut collecting pipe 30 rotates uniformly to a predetermined position of a nut distributor, the nut distributor horizontally transfers a nut 72 into the nut collecting pipe 30. After a nut collecting pipe 30 rotates uniformly through the predetermined positions after passing by three nut distributors in sequence, three nuts 72 can be collected in a nut collecting pipe 30 for the nut grinding member to be inserted into the inner holes of the three nuts 72 simultaneously for grinding. Further, in order to increase the number of nuts 72 ground by the nut grinding member at one time, the number of nut distributors can be adjusted as needed to improve the grinding efficiency of the nuts 72.

[0061] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and embodiments. It can be fully applied to various fields suitable for the present invention. For those familiar with the field, additional modifications can be easily made. Therefore, without departing from the general concept defined by the claims and the equivalent scope, the present invention is not limited to the specific details and the illustrated examples here.

Claims

1. An automatic grinding device for the inner hole of a nut, characterized in that, Comprising: A nut distributor, which includes a nut distribution support, a nut distribution sorting member, and a nut transfer member. The nut distribution sorting member applies a centripetal force to nuts on the nut distribution support, so that the nuts enter the nut transfer member provided on the nut distributor one by one; A nut collector, which is provided on the nut distributor and includes a collection support, a collection rotating member, and a collection member to be ground. The collection rotating member drives the collection member to be ground to run continuously on the collection support. The collection member to be ground collects the nuts transferred by the nut transfer member during continuous operation; A nut grinding member, which is provided on the nut distributor and includes a grinding support, a grinding rotating member, and a grinding retracting and extending member. The grinding rotating member drives the grinding retracting and extending member to run continuously on the grinding support. After running to a predetermined position, the grinding retracting and extending member inserts into the inner hole of the nut in the collection member to be ground running synchronously for grinding; The workpiece collection to be ground includes a nut collection pipe, a nut barrier, a nut pusher, and a nut compactor. A collection through-hole is provided on the side wall of the nut collection pipe, and the nut collection pipe is vertically arranged on the synchronous belt of the collection rotating member. The nut barrier includes a barrier fixed pipe, a first spring, and a barrier tongue. One end of the barrier fixed pipe is penetrated and arranged on the nut collection pipe, and the barrier fixed pipe is located below the collection through-hole. The first spring is embedded in the other end of the barrier fixed pipe. One end of the barrier tongue is provided with an inclined surface, and the other end of the barrier tongue is embedded in the pipe at one end of the barrier fixed pipe. Multiple sets of the nut barriers are symmetrically distributed on the nut collection pipe. A compact long through-hole is provided on the side wall of the other end of the nut collection pipe, and multiple compact long through-holes are evenly distributed in the circumferential direction of the nut collection pipe. The nut pusher includes a second magnetic coil, a nut push rod, and a nut push plate. The second magnetic coil is fixedly embedded in one end of the nut collection pipe, the nut push rod is embedded in the second magnetic coil, and the nut push plate is horizontally arranged at the bottom end of the nut push rod. The nut compactor includes a compact bearing ring, a compact retractor, and a compact compression spring. The compact bearing ring is sleeved outside the nut collection pipe, and the compact bearing ring can move axially along the nut collection pipe. The compact retractor includes a retractor fixed pipe, a retractor rod, a retractor spring, and a third magnetic coil. One end of the retractor fixed pipe is arranged on the compact bearing ring. A limiting plate is fixedly sleeved on the retractor rod. The retractor rod is embedded in the retractor fixed pipe, and one end of the retractor rod sequentially penetrates through the compact bearing ring and the compact long through-hole and then extends into the nut collection pipe. The limiting plate limits the length of one end of the retractor rod extending into the nut collection pipe. The retractor spring is embedded in the retractor fixed pipe, and one end of the retractor spring is connected to the limiting plate, and the other end of the retractor spring is fixedly connected to the inner wall of the retractor fixed pipe. The third magnetic coil is fixedly embedded in the pipe at the other end of the retractor fixed pipe, and the third magnetic coil is sleeved outside the other end of the retractor rod. Multiple sets of the compact retractors are evenly distributed in the circumferential direction around the compact bearing ring, and the compact retractors correspond to the compact long through-holes one by one. The compact compression spring is sleeved outside the nut collection pipe, and one end of the compact compression spring is connected to the compact retractor, and the other end of the compact compression spring is connected to a reverse support plate arranged at the other end of the nut collection pipe. Multiple sets of the workpiece collection to be ground are arranged at equal intervals on the synchronous belt. The grinding and retracting member includes a grinding seat, a grinding motor, a horizontal adjustment member, and a vertical adjustment member. The grinding seat is arranged on the grinding synchronous belt of the grinding rotating member, the grinding motor is arranged on the grinding seat, and the rotating shaft of the grinding motor penetrates through the grinding seat.The lateral adjustment member includes a lateral adjustment groove, a lateral adjustment block, a first lateral adjustment spring, a second lateral adjustment spring and a lateral adjustment rod. The center of the lateral adjustment groove is provided on the rotating shaft of the grinding motor. The lateral adjustment block is fitted in the lateral adjustment groove. The first lateral adjustment spring is fitted in one end of the lateral adjustment groove, and one end of the first lateral adjustment spring is connected to one end face of the lateral adjustment groove, and the other end of the first lateral adjustment spring is connected to one end of the lateral adjustment block. The second lateral adjustment spring is fitted in the other end of the lateral adjustment groove, and one end of the second lateral adjustment spring is connected to the other end face of the lateral adjustment block. The lateral adjustment rod is an automatic telescopic rod. The base of the lateral adjustment rod is provided on the other end face of the lateral adjustment groove. A pressure sensor is provided at the top of the lateral adjustment rod. The lateral adjustment rod is connected to the other end of the second lateral adjustment spring through the pressure sensor. The vertical adjustment member includes a vertical adjustment fixed tube, a vertical adjustment sliding rod, a fourth magnetic coil and a grinding rod. One end of the vertical adjustment fixed tube is provided on the lateral adjustment block. One end of the vertical adjustment sliding rod is fitted in the vertical adjustment fixed tube, and the slider on the vertical adjustment sliding rod cooperates with the sliding groove on the inner wall of the vertical adjustment fixed tube. The fourth magnetic coil is fitted in the other end tube of the vertical adjustment fixed tube, and the fourth magnetic coil is sleeved outside the vertical adjustment sliding rod. One end of the grinding rod is vertically provided on the other end of the vertical adjustment sliding rod. Multiple sets of the retractable grinding members are evenly distributed at equal intervals on the grinding synchronous belt, and the distance between adjacent two sets of the retractable grinding members is the same as the distance between adjacent two sets of the collecting members to be ground.; 2. The automated grinding device for the inner hole of the nut according to claim 1, characterized in that, The distribution support plate of the nut distribution support is provided on the support bottom plate of the nut distribution support through the distribution support legs of the nut distribution support; the nut distribution sorting member includes a thrust ball bearing, a nut distribution pipe, a nut distribution motor, a distribution spiral plate, a nut distribution protection pipe, a distribution relay pipe, and a sorting stacking pipe. The thrust ball bearing is provided on the nut distribution support. One end of the nut distribution pipe is provided on the thrust ball bearing. The nut distribution motor is provided on the nut distribution support, and the rotating shaft of the nut distribution motor passes through the nut distribution support and is connected to one end face of the nut distribution pipe; the inner diameter of the nut distribution protection pipe is larger than the outer diameter of the nut distribution pipe, and one end of the nut distribution protection pipe is provided on the nut distribution support; one end of the distribution spiral plate is provided on the inner wall of the other end of the nut distribution protection pipe, and the distribution spiral plate is embedded in the nut distribution pipe; one end of the distribution relay pipe is penetrated and provided on the inner wall of the other end of the nut distribution protection pipe, and the penetration of the distribution relay pipe on the nut distribution protection pipe corresponds to one end of the distribution spiral plate; the sorting stacking pipe is in a hexagonal tubular shape, one end of the sorting stacking pipe is vertically penetrated and provided on the other end of the distribution relay pipe, and the distance from the other end of the sorting stacking pipe to the support bottom plate is not less than the width of one nut.

3. The automated grinding device for the inner hole of the nut according to claim 2, characterized in that, The nut transfer member includes a transfer support plate, a transfer motor, a transfer rod, and a nut gripping head. The transfer support plate is in a right-angled plate shape. One end of the transfer support plate is vertically provided on the nut distribution support. The transfer motor is provided on the other side of the transfer support plate. One end of the transfer rod is horizontally and fixedly provided on the free end of the rotating shaft of the transfer motor after passing through the transfer support plate; the nut gripping head includes a gripping pipe and a first magnetic coil. One end of the gripping pipe is provided on the other end of the transfer rod, and the first magnetic coil is fixedly embedded in the gripping pipe.

4. The automated grinding device for the inner hole of the nut according to claim 3, characterized in that, The collecting rotating member includes a driving transmission member, a driven transmission member, a relay transmission member, and a driving power member. The driving transmission member, the driven transmission member, the relay transmission member, and the driving power member are all arranged on the collecting support member. The driving transmission member includes a driving shaft, a driving synchronous pulley, and a driving gear. One end of the driving shaft penetrates through the collecting support member, and the driving shaft can rotate circumferentially on the collecting support member. The driving synchronous pulley is fixedly sleeved on the other end of the driving shaft, and the driving gear is fixedly sleeved on the driving shaft. The driven transmission member includes a driven shaft, a driven synchronous pulley, and a driven gear. One end of the driven shaft penetrates through the collecting support member, and the driven shaft can rotate circumferentially on the collecting support member. The driven synchronous pulley is fixedly sleeved on the other end of the driven shaft, and the driven gear is fixedly sleeved on the driven shaft. The relay transmission member includes a relay shaft, a relay synchronous pulley, and a relay gear. One end of the relay shaft penetrates through the collecting support member, the relay synchronous pulley is sleeved on the other end of the relay shaft, and the relay synchronous pulley can rotate circumferentially relative to the relay shaft. The relay gear is sleeved on the relay shaft, and the relay gear can rotate circumferentially relative to the relay shaft. At the same time, the relay gear meshes with the driven gears and the driving gear located on both sides. The driving power member includes a collecting driving motor, a collecting worm, and a collecting worm wheel. The collecting driving motor is arranged on the collecting support member, the collecting worm is arranged on the rotating shaft of the collecting driving motor, the collecting worm wheel is fixedly sleeved on the driving shaft, and the collecting worm wheel meshes with the collecting worm. The same synchronous belt is sleeved outside the driving synchronous pulley, the driven synchronous pulley, and the relay synchronous pulley, and the synchronous belt meshes with the driving synchronous pulley and the driven synchronous pulley.

5. The automated grinding device for the inner hole of the nut according to claim 4, wherein, The grinding rotating member includes a main grinding member, a driven grinding member, a relay grinding member, and a main grinding power member. The main grinding member, the driven grinding member, the relay grinding member, and the main grinding power member are all arranged on the grinding support member. The main grinding member includes a main grinding shaft, a main grinding synchronous pulley, and a main grinding gear. One end of the main grinding shaft penetrates through the grinding support member, and the main grinding shaft can rotate circumferentially on the grinding support member. The main grinding synchronous pulley is fixedly sleeved on the other end of the main grinding shaft, and the main grinding gear is fixedly sleeved on the main grinding shaft. The driven grinding member includes a driven grinding shaft, a driven grinding synchronous pulley, and a driven grinding gear. One end of the driven grinding shaft penetrates through the grinding support member, and the driven grinding shaft can rotate circumferentially on the grinding support member. The driven grinding synchronous pulley is fixedly sleeved on the other end of the driven grinding shaft, and the driven grinding gear is fixedly sleeved on the driven grinding shaft. The relay grinding member includes a relay grinding shaft, a relay grinding synchronous pulley, and a relay grinding gear. One end of the relay grinding shaft penetrates through the grinding support member, the relay grinding synchronous pulley is sleeved on the relay grinding shaft, and the relay grinding synchronous pulley can rotate circumferentially relative to the relay grinding shaft. At the same time, the relay grinding gear meshes with the main grinding gears on both sides and the driven grinding gears respectively. The same grinding synchronous belt is sleeved outside the main grinding synchronous pulley, the driven grinding synchronous pulley, and the relay grinding synchronous pulley. The main grinding power member includes a main grinding motor, a grinding worm, and a grinding worm gear. The main grinding motor is arranged on the grinding support member, the grinding worm is arranged on the rotating shaft of the main grinding motor, the grinding worm gear is fixedly sleeved on the main grinding shaft, and the grinding worm gear meshes with the grinding worm.

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