Casting polishing device

Abstract

The invention provides a casting polishing device, and relates to the technical field of polishing equipment. The technical problem that in the prior art, a casting with a narrow cavity or a corner cannot be fully polished easily is solved. According to the technical scheme, the casting polishing device comprises a polishing barrel used for containing a casting and ferromagnetic grinding materials and a driving mechanism used for driving the ferromagnetic grinding materials. The axis of the polishing barrel points to the horizontal direction; the two driving mechanisms are distributed at the two ends of the polishing barrel. The driving mechanism comprises a turntable, a plurality of direct-current electromagnets mounted on the turntable, a storage battery for supplying power to the direct-current electromagnets, and a first power source for driving the turntable to rotate; the axis of the rotating disc coincides with the axis of the polishing barrel, and the connecting line of the N pole and the S pole of the direct-current electromagnet is perpendicular to the axis of the polishing barrel. According to the casting polishing device, the casting can be fully polished, and the mechanical degree of casting polishing is improved; and in addition, batch polishing of the castings can be achieved, and the polishing efficiency of the castings is improved.

Description

Technical Field

[0001] The invention relates to the technical field of polishing equipment, in particular to a casting polishing device. Background Art

[0002] After casting, the casting needs to be polished. In the prior art, the operator generally polishes the casting by grinding with a hand-held polishing tool. This polishing method is difficult to achieve a sufficient polishing effect for castings with narrow cavities or corners; and it is completely dependent on manual operation, with a low degree of mechanization. Therefore, it is necessary to study a casting polishing device to improve the mechanization degree of casting polishing and achieve a sufficient polishing effect on the casting. Summary of the invention

[0003] The purpose of the present invention is to provide a casting polishing device, which can achieve a sufficient polishing effect on the casting and improve the mechanization degree of casting polishing; and can realize batch polishing of castings and improve the polishing efficiency of castings.

[0004] To achieve the above object, the technical solution adopted by the present invention is: A casting polishing device comprises: a polishing barrel for accommodating castings and ferromagnetic abrasives, and a driving mechanism for driving the ferromagnetic abrasives to move in the polishing barrel; wherein the axis of the polishing barrel points to the horizontal direction, and the polishing barrel is provided with a take-in and put-out port at the top and is adapted to have a cover; two driving mechanisms are provided, distributed at both ends of the polishing barrel; the driving mechanism comprises: a turntable, a plurality of DC electromagnets installed on the turntable, a battery for powering the DC electromagnets, and a first power source for driving the turntable to rotate; the axis of the turntable coincides with the axis of the polishing barrel, and the line connecting the N pole and the S pole of the DC electromagnet is perpendicular to the axis of the polishing barrel.

[0005] Optionally, the polishing barrel includes: a barrel with openings at both ends, and a confluence chamber installed at the end of the barrel and completely covering the opening; the confluence chamber is provided with an opening on the side facing the barrel, and a sieve plate for air flow to pass through is installed in the opening; the confluence chamber is provided with a reflux interface, and the reflux interfaces of the two confluence chambers are respectively connected to the two ends of the plug chamber; a piston is provided in the plug chamber to separate the reflux interfaces connected at the two ends; the piston is adapted to a second power source that drives it to reciprocate along the plug chamber.

[0006] Optionally, the piston includes: a plug body and a plug rod coaxially connected to the plug body; the plug rod passes through the plug chamber and is hinged to one end of a connecting rod; the other end of the connecting rod is hinged to a crankshaft; the second power source is a servo motor, and drives the piston to reciprocate along the plug chamber by driving the crankshaft to rotate.

[0007] Optionally, the diameter of the sieve plate is smaller than the inner diameter of the barrel, and the sieve plate is located outside the collecting chamber; the collecting chamber is provided with a concentric first annular groove and a second annular groove on the side facing the barrel, and the second annular groove is located outside the first annular groove; the end of the barrel is installed in the first annular groove corresponding to the collecting chamber; the taking and releasing port is provided at the top of the barrel wall of the barrel; the sealing cover is arc-shaped, and its end is limited in the second annular groove corresponding to the collecting chamber; the sealing cover is slidably connected with the collecting chamber; the sealing cover is provided with a positioning portion having a first positioning hole at the outer end, and the collecting chamber is correspondingly provided with a second positioning hole, and is adapted with a positioning pin.

[0008] Optionally, the barrel is provided with an elastic sealing member surrounding the access opening on the outer side of the barrel wall, so as to form a seal when the cover covers the access opening.

[0009] Optionally, the collecting chamber is provided with a slag discharge pipe extending downward, and the lower end of the slag discharge pipe is detachably connected to the slag collecting chamber; the slag discharge pipe is provided with a return air branch pipe above the slag collecting chamber, and the reflux interface is arranged at the end of the return air branch pipe away from the slag discharge pipe; a filtering mechanism is provided in the slag discharge pipe; the filtering mechanism comprises: a cylindrical filter cloth, and a skeleton for pressing both ends of the filter cloth against the inner wall of the pipe; the filter cloth is intercepted at the connection point between the slag discharge pipe and the return air branch pipe.

[0010] Optionally, a sealing member is provided in the slag collecting chamber; the sealing member comprises: a sealing cone which is smaller at the top and larger at the bottom, and a guide cylinder connected to the bottom of the sealing cone; a guide column which cooperates with the guide cylinder is provided at the bottom of the slag collecting chamber; a compression spring is provided at the top of the guide column to apply an upward thrust to the sealing member; the maximum diameter of the sealing cone is larger than the inner diameter of the slag discharge pipe, so that the lower end of the slag discharge pipe is closed under the drive of the compression spring.

[0011] Optionally, it also includes: a support platform arranged at both ends of the polishing barrel; a ring frame is arranged on the top of the support platform, and the collection chamber is installed in the ring frame; the turntable is rotatably connected to the ring frame through a slewing bearing; and the first power source is installed on the top of the support platform.

[0012] Optionally, the first power source is an AC coil; when the AC coil and the DC electromagnet are energized, the AC coil applies force to the DC electromagnet through the changing magnetic field generated by it, thereby driving the turntable to rotate.

[0013] Optionally, a wire tube extending upward is installed on the top of the battery, and a power connection room is set on the top of the wire tube; brushes and slip rings are arranged in the power connection room; the slip ring is electrically connected to the battery, and the brush is electrically connected to the DC electromagnet.

[0014] The working principle of the present invention is: put the ferromagnetic abrasive and the casting to be polished into the polishing barrel from the access opening; make the cover close the access opening. Make the battery supply power to the DC electromagnet, and make the first power source drive the turntable to rotate. The DC electromagnet will rotate with the ferromagnetic abrasive in the polishing barrel, so as to polish the casting.

[0015] It can be seen that the beneficial effects of the present invention are: the mechanization degree of casting polishing is improved. And the ferromagnetic abrasive can penetrate into the narrow cavity or corner of the casting, so as to fully polish the casting. At the same time, the casting can also be polished in batches, which improves the polishing efficiency of the casting. In addition, for castings made of ferromagnetic materials, in order to prevent the casting from being sucked by the DC electromagnet and rotating together, the magnetic force of the DC electromagnet cannot be set too strong; in this case, the coverage range of the ferromagnetic abrasive that can be attracted by the DC electromagnet will be limited accordingly; by arranging a driving mechanism with a DC electromagnet at both ends of the polishing barrel, the ferromagnetic abrasive in a larger space range can be attracted to rotate together; thus, it is suitable for polishing larger castings and can improve the batch processing capacity of small castings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 A schematic diagram of a drive mechanism provided at both ends of a polishing barrel; Figure 3 It is a schematic diagram of setting a confluence chamber at both ends of the barrel; Figure 4 This is a schematic diagram of the assembly of the polishing barrel; Figure 5 It is the assembly diagram of the turntable and the DC electromagnet; Figure 6 It is a schematic diagram of the assembly of the confluence chamber and the plug chamber; Figure 7 A schematic diagram of providing a second power source for the plug chamber; Figure 8 It is a schematic diagram of the connection between the piston and the crankshaft; Fig. 9 A schematic diagram of providing a first annular groove and a second annular groove for the confluence chamber; Fig.10 It is a schematic diagram of the assembly of the collection chamber, the filter cloth and the frame; Fig.11It is a schematic diagram of the assembly of the collection chamber, the slag collection chamber and the sealing parts; Fig.12 A schematic diagram of setting a guide column in a slag collection chamber; Fig.13 It is a structural schematic diagram of a sealing member; Fig.14 A schematic diagram of setting up a ring frame for a support table; Fig.15 Schematic diagram of the connection room for the battery.

[0018] 1. Polishing barrel; 2. Take-in and put-out port; 3. Sealing cover; 4. Turntable; 5. DC electromagnet; 6. Battery; 7. First power source; 8. Cylinder; 9. Distribution chamber; 10. Opening; 11. Sieve plate; 12. Reflux interface; 13. Plug chamber; 14. Piston; 15. Second power source; 16. Plug body; 17. Plug rod; 18. Connecting rod; 19. Crankshaft; 20. First annular groove; 21. Second annular groove; 22. First positioning hole; 23. Positioning part; 24. Positioning pin; 25. Slag discharge pipe; 26. Slag collecting chamber; 27. Return air branch pipe; 28. Filter cloth; 29. ​​Frame; 30. Sealing piece; 31. Sealing cone; 32. Guide cylinder; 33. Guide column; 34. Compression spring; 35. Support platform; 36. Ring frame; 37. Slewing bearing; 38. Wire pipe; 39. Power connection room. DETAILED DESCRIPTION

[0019] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0020] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "front", "rear", "left", "right", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0021] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0022] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0024] Example 1

[0025] like Figure 1 to Figure 5 As shown, an embodiment of the present invention provides a casting polishing device. The casting polishing device includes: a polishing barrel 1 for accommodating castings and ferromagnetic abrasives, and a driving mechanism for driving the ferromagnetic abrasives to move in the polishing barrel 1. It should be understood that ferromagnetic abrasives are usually selected from steel needles or steel sand. Among them, the axis of the polishing barrel 1 points to the horizontal direction, and the polishing barrel 1 is provided with a take-in and put-out port 2 at the top and is adapted to a cover 3. Two driving mechanisms are provided, distributed at both ends of the polishing barrel 1. The driving mechanism includes: a turntable 4, a plurality of DC electromagnets 5 installed on the turntable 4, a battery 6 for powering the DC electromagnets 5, and a first power source 7 for driving the turntable 4 to rotate. It should be understood that a plurality of DC electromagnets 5 can be installed on the turntable 4. The axis of the turntable 4 coincides with the axis of the polishing barrel 1, and the line connecting the N pole and the S pole of the DC electromagnet 5 is perpendicular to the axis of the polishing barrel 1.

[0026] The specific implementation of this embodiment is described below: put the ferromagnetic abrasive and the casting to be polished into the polishing barrel 1 from the access port 2; and make the cover 3 close the access port 2. Make the battery 6 supply power to the DC electromagnet 5, and make the first power source 7 drive the turntable 4 to rotate. The DC electromagnet 5 will rotate with the ferromagnetic abrasive in the polishing barrel 1, so as to polish the casting. The casting polishing device improves the mechanization degree of casting polishing. And the ferromagnetic abrasive can penetrate into the narrow cavity or corner of the casting, so as to have a sufficient polishing effect on the casting. At the same time, the casting can also be polished in batches, which improves the polishing efficiency of the casting. In addition, for castings cast from ferromagnetic materials, in order to prevent the castings from being sucked by the DC electromagnet 5 and rotating together, the magnetic force of the DC electromagnet 5 cannot be set too strong; in this case, the coverage range of the DC electromagnet 5 that can attract the ferromagnetic abrasive will be limited accordingly. The present invention provides a driving mechanism with a DC electromagnet 5 at both ends of the polishing barrel 1, so that the ferromagnetic abrasive in a larger space can be attracted and rotated together; thus, it is suitable for polishing larger castings and can improve the batch processing capacity of small castings.

[0027] Example 2

[0028] like Figure 1 , Figure 6 , Figure 7 , Figure 8 As shown, on the basis of Example 1, the polishing barrel 1 includes: a barrel 8 with openings at both ends, and a confluence chamber 9 installed at the end of the barrel 8 and completely covering the opening; the confluence chamber 9 is provided with an opening 10 on the side facing the barrel 8, and a sieve plate 11 for air flow to pass through is installed at the opening 10; the confluence chamber 9 is provided with a reflux interface 12, and the reflux interfaces 12 of the two confluence chambers 9 are respectively connected to the two ends of the plug chamber 13; a piston 14 is provided in the plug chamber 13 to separate the reflux interfaces 12 connected at the two ends; the piston 14 is adapted to drive a second power source 15 to reciprocate along the plug chamber 13.

[0029] It should be understood that if there is no liquid soaked in the polishing barrel 1, the second power source 15 drives the piston 14 to move back and forth along the plug chamber 13, and a high-speed airflow that flows back and forth and stirs can be formed in the polishing barrel 1, thereby driving the ferromagnetic abrasive in the polishing barrel 1 to move back and forth; if there is liquid soaked in the polishing barrel 1, the second power source 15 drives the piston 14 to move back and forth along the plug chamber 13, and a high-speed liquid flow that flows back and forth and stirs can be formed in the polishing barrel 1, thereby driving the ferromagnetic abrasive in the polishing barrel 1 to move back and forth. The current of the DC electromagnet 5 can be controlled by setting a PLC controller; for example, the magnetic force at both ends of the polishing barrel 1 can be made larger on the left and smaller on the right, or smaller on the left and larger on the right, in a periodic change, to cooperate with the fluid that flows back and forth and stirs in the polishing barrel 1; thereby causing the ferromagnetic abrasive to move violently in the polishing barrel 1 in a three-dimensional trajectory; this can greatly increase the range of motion of the ferromagnetic abrasive, and can more fully polish the casting. When only the DC electromagnet 5 is provided, the ferromagnetic abrasive mainly rotates around the axis of the turntable 4, which is basically equivalent to a two-dimensional trajectory, and the range of motion is quite limited. Only smaller castings can be polished, and only a small number of castings can be processed each time. The structure proposed in this embodiment can greatly increase the range of motion of the ferromagnetic abrasive in the axial direction of the polishing barrel 1, so that the effective polishing area of ​​the ferromagnetic abrasive in the polishing barrel 1 is greatly improved; this allows the polishing barrel 1 to be set longer in the axial direction, thereby allowing the polishing barrel 1 to have a larger volume, and thus is suitable for polishing larger castings, and can improve the batch processing capacity of small castings. In addition, the caliber of the opening 10 is smaller than the diameter of the sieve plate 11; the particle size of the ferromagnetic abrasive is smaller than the sieve hole diameter of the sieve plate 11.

[0030] Example 3

[0031] like Figure 6 to Figure 8As shown, on the basis of Example 2, the piston 14 includes: a plug body 16, a plug rod 17 coaxially connected to the plug body 16; the plug rod 17 passes through the plug chamber 13 and is hinged to one end of a connecting rod 18; the other end of the connecting rod 18 is hinged to a crankshaft 19; the second power source 15 is a servo motor, and drives the piston 14 to reciprocate along the plug chamber 13 by driving the crankshaft 19 to rotate.

[0032] It should be understood that by driving the crankshaft 19 to rotate through the servo motor, the piston 14 is driven to reciprocate along the piston chamber 13; the maximum frequency of the reciprocating motion of the piston 14 can be increased; thereby, the ferromagnetic abrasive can move more violently in the polishing barrel 1 to improve the polishing effect. In addition, a PLC controller can be provided to control the current of the DC electromagnet 5 and the speed of the servo motor, thereby controlling the movement of the ferromagnetic abrasive in the polishing barrel 1.

[0033] Example 4

[0034] like Figure 3 , Figure 4 , Fig. 9 As shown, on the basis of Example 2 or Example 3, the diameter of the sieve plate 11 is smaller than the inner diameter of the barrel 8, and the sieve plate 11 is located outside the confluence chamber 9; the confluence chamber 9 is provided with a concentric first annular groove 20 and a second annular groove 21 on the side facing the barrel 8, and the second annular groove 21 is located outside the first annular groove 20; the end of the barrel 8 is installed in the first annular groove 20 corresponding to the confluence chamber 9; the taking and releasing port 2 is provided at the top of the barrel wall of the barrel 8; the sealing cover 3 is arc-shaped, and its end is limited in the second annular groove 21 corresponding to the confluence chamber 9; the sealing cover 3 is slidably connected with the confluence chamber 9; the sealing cover 3 is provided with a positioning portion 23 with a first positioning hole 22 at the outer end, and the confluence chamber 9 is correspondingly provided with a second positioning hole, and is adapted to a positioning pin 24.

[0035] It should be understood that the polishing barrel 1 adopts a structure of a split combination of a barrel 8, a collecting chamber 9, and a cover 3, which will be more convenient for early production and later maintenance. The two ends of the barrel 8 can be fixed in the first annular groove 20 of the collecting chamber 9 by bonding, welding, etc. The cover 3 can slide along the second annular groove 21 of the collecting chamber 9 to change the opening and closing state of the access port 2. Align the first positioning hole 22 with the second positioning hole and insert the positioning pin 24, so that the cover 3 can keep the access port 2 closed. Pull out the positioning pin 24, rotate the cover 3 along the second annular groove 21, and the access port 2 can be opened. In addition, the sieve plate 11 can be detachably installed on the side of the collecting chamber 9 facing the barrel 8 by bolt connection, clamping, etc., and the sieve plate 11 can be disassembled and assembled at the access port 2, so that the sieve plate 11 can be easily replaced.

[0036] Example 5

[0037] On the basis of Embodiment 4, the barrel 8 is provided with an elastic sealing member surrounding the access opening 2 on the outer side of the barrel wall, so as to form a seal when the cover 3 covers the access opening 2 .

[0038] It will be appreciated that the resilient seal is typically made of rubber or resilient plastic.

[0039] Example 6

[0040] like Figure 4 , Fig.10 , Fig.11 As shown, on the basis of any one of Examples 2 to 5, the collecting chamber 9 is provided with a slag discharge pipe 25 extending downward, and the lower end of the slag discharge pipe 25 is detachably connected to the slag collecting chamber 26; the slag discharge pipe 25 is provided with a return air branch pipe 27 above the slag collecting chamber 26, and the reflux interface 12 is provided at the end of the return air branch pipe 27 away from the slag discharge pipe 25; a filtering mechanism is provided in the slag discharge pipe 25; the filtering mechanism comprises: a cylindrical filter cloth 28, and a skeleton 29 for pressing the two ends of the filter cloth 28 against the inner wall of the pipe; the filter cloth 28 is intercepted at the connection between the slag discharge pipe 25 and the return air branch pipe 27.

[0041] It should be understood that when the piston 14 moves back and forth along the plug chamber 13, a high-speed airflow or high-speed liquid flow that flows back and forth in the polishing barrel 1 is formed; in addition to greatly increasing the range of movement of the ferromagnetic abrasive in the polishing barrel 1, the debris generated during the polishing process can also gradually pass through the sieve plate 11 of the confluence chamber 9 and enter the confluence chamber 9. The debris that does not have ferromagnetism will fall downward from the confluence chamber 9 and eventually fall into the slag collection chamber 26 at the lower end of the slag discharge pipe 25; the debris that has ferromagnetism will be attracted by the DC electromagnet 5, stick to the inner wall of the confluence chamber 9 away from the polishing barrel 1, and fall into the slag collection chamber 26 at the lower end of the slag discharge pipe 25 after polishing is completed and the DC electromagnet 5 is powered off. The filter cloth 28 can play a blocking role to prevent the debris from entering the plug chamber 13. The skeleton 29 includes: clamping rings at the upper and lower ends, and strips or rods connecting the clamping rings; in this way, when the piston 14 moves back and forth along the plug chamber 13, the middle section of the cylindrical filter cloth 28 can oscillate back and forth, so that the debris attached to the filter cloth 28 falls off; in this way, the filter cloth 28 can be effectively prevented from being blocked, and there is no need to frequently clean the filter cloth 28. The slag discharge pipe 25 and the slag collection chamber 26 can be connected by bolts; one of the slag discharge pipe 25 and the slag collection chamber 26 can also be provided with an internal thread, and the other can be provided with a matching external thread to form a threaded connection.

[0042] Example 7

[0043] like Figure 11 to Figure 13As shown, on the basis of Example 6, a sealing member 30 is provided in the slag collecting chamber 26; the sealing member 30 includes: a sealing cone 31 which is small at the top and large at the bottom, and a guide cylinder 32 connected to the bottom of the sealing cone 31; a guide column 33 which cooperates with the guide cylinder 32 is provided at the bottom of the slag collecting chamber 26; a compression spring 34 is provided at the top of the guide column 33 to apply an upward thrust to the sealing member 30; the maximum diameter of the sealing cone 31 is larger than the inner diameter of the slag discharge pipe 25, so that the lower end of the slag discharge pipe 25 is closed under the drive of the compression spring 34.

[0044] It should be understood that, driven by the piston 14, when the air or liquid flows from the return air branch pipe 27 into the slag discharge pipe 25, the sealing member 30 will be driven to move downward, so that the lower end of the slag discharge pipe 25 is opened; at the same time, the filter cloth 28 will be agitated to make the debris attached to the filter cloth 28 fall off; in this way, the debris can be smoothly dropped into the slag collection chamber 26. When the air or liquid flows from the slag discharge pipe 25 into the return air branch pipe 27, the sealing member 30 will be reset upward to seal the lower end of the slag discharge pipe 25; in this way, the debris in the slag collection chamber 26 can be prevented from being sucked out. The diameter of the guide column 33 is equal to or slightly smaller than the inner diameter of the guide cylinder 32, and is inserted into the lower part of the guide cylinder 32; the compression spring 34 is located in the guide cylinder 32. The slag collection chamber 26 can be disassembled to clean the debris accumulated in the slag collection chamber 26, or to discharge the liquid in the polishing barrel 1. In addition, a valve may be provided at the bottom of the slag collecting chamber 26 to discharge the debris in the slag collecting chamber 26 or to discharge the liquid in the polishing barrel 1 .

[0045] Example 8

[0046] like Figure 2 , Fig.14 , Fig.15 As shown, based on any one of Examples 2 to 7, the casting polishing device also includes: a support platform 35 arranged at both ends of the polishing barrel 1; a ring frame 36 is arranged on the top of the support platform 35, and the collection chamber 9 is installed in the ring frame 36; the turntable 4 is rotatably connected with the ring frame 36 through a slewing bearing 37; and the first power source 7 is installed on the top of the support platform 35.

[0047] It should be understood that the outer ring of the slewing bearing 37 can be installed on the side of the ring frame 36 away from the manifold chamber 9 , and the turntable 4 can be installed on the inner ring of the slewing bearing 37 .

[0048] Example 9

[0049] On the basis of any one of Examples 1 to 8, the first power source 7 is an AC coil; when the AC coil and the DC electromagnet 5 are energized, the AC coil applies force to the DC electromagnet 5 through the changing magnetic field it generates, driving the turntable 4 to rotate.

[0050] It should be understood that the axis of the AC coil points to the horizontal direction. When the AC coil and the DC electromagnet 5 are both energized, the AC coil acts as the stator of the motor; the turntable 4 equipped with the DC electromagnet 5 is equivalent to the rotor of the motor; in this way, the turntable 4 can be driven to rotate when only the AC coil is set. Compared with setting a motor to drive the turntable 4 to rotate, the number of parts can be reduced and the cost can be reduced. In addition, the current of the AC coil can be controlled by setting a PLC controller, thereby controlling the rotation speed of the turntable 4, and then controlling the movement of the ferromagnetic abrasive in the polishing barrel 1.

[0051] Example 10

[0052] like Fig.15 As shown, on the basis of any one of Examples 1 to 9, a wire tube 38 extending upward is installed on the top of the battery 6, and a power connection chamber 39 is set on the top of the wire tube 38; brushes and slip rings are provided in the power connection chamber 39; the slip ring is electrically connected to the battery 6, and the brush is electrically connected to the DC electromagnet 5.

[0053] It should be understood that a hard tube can be installed at the axis of the turntable 4, and the wire for supplying power to the DC electromagnet 5 can be fixed in the hard tube, and then the wire can be electrically connected to the brush in the power receiving chamber 39; the slip ring can be electrically connected to the battery 6 through the wire; in this way, the DC electromagnet 5 rotating with the turntable 4 can be powered. It is a mature prior art to supply power to rotating electrical components through the combination of slip rings and brushes, and the structure and principle of slip rings and brushes will not be described in detail here.

[0054] Although specific embodiments of the present invention are described above, those skilled in the art should understand that various changes or modifications may be made to these embodiments without departing from the principles and essence of the present invention, and these changes and modifications are all within the scope of protection of the present invention.

Claims

1. A casting polishing device, characterized in that: include: A polishing barrel (1) for containing the casting and the ferromagnetic abrasive; and A driving mechanism for driving the ferromagnetic abrasive to move in the polishing barrel (1); in, The axis of the polishing barrel (1) points in the horizontal direction, and the polishing barrel (1) is provided with a take-in and put-out opening (2) at the top and is fitted with a sealing cover (3); The driving mechanisms are provided in two pieces and are distributed at both ends of the polishing barrel (1); The driving mechanism comprises: a rotating disk (4), a plurality of DC electromagnets (5) mounted on the rotating disk (4), a storage battery (6) for supplying power to the DC electromagnets (5), and a first power source (7) for driving the rotating disk (4) to rotate; The axis of the turntable (4) coincides with the axis of the polishing barrel (1), and the line connecting the N pole and the S pole of the DC electromagnet (5) is perpendicular to the axis of the polishing barrel (1).

2. The casting polishing device according to claim 1, characterized in that: The polishing barrel (1) comprises: a barrel (8) with openings at both ends, and a collection chamber (9) installed at the ends of the barrel (8) and completely covering the openings; The confluence chamber (9) is provided with an opening (10) on a side facing the barrel (8), and a sieve plate (11) is installed at the opening (10) for air flow to pass through; The confluence chamber (9) is provided with a reflux interface (12), and the reflux interfaces (12) of the two confluence chambers (9) are respectively connected to the two ends of the plug chamber (13); A piston (14) is provided in the plug chamber (13) to separate the reflux interfaces (12) connected at both ends; The piston (14) is adapted to be driven by a second power source (15) to reciprocate along the piston chamber (13).

3. The casting polishing device according to claim 2, characterized in that: The piston (14) comprises: a plug body (16) and a plug rod (17) coaxially connected to the plug body (16); The plug rod (17) passes through the plug chamber (13) and is hinged to one end of a connecting rod (18); the other end of the connecting rod (18) is hinged to a crankshaft (19); The second power source (15) is a servo motor, and drives the piston (14) to reciprocate along the piston chamber (13) by driving the crankshaft (19) to rotate.

4. The casting polishing device according to claim 2, characterized in that: The diameter of the sieve plate (11) is smaller than the inner diameter of the barrel (8), and the sieve plate (11) is located outside the collection chamber (9); The confluence chamber (9) is provided with a first annular groove (20) and a second annular groove (21) on the side facing the barrel (8), and the second annular groove (21) is located outside the first annular groove (20); The end of the barrel (8) is installed in the first annular groove (20) corresponding to the confluence chamber (9); The access opening (2) is arranged at the top of the barrel wall of the barrel (8); The sealing cover (3) is arc-shaped, and its end is limited in the second annular groove (21) corresponding to the confluence chamber (9); the sealing cover (3) and the confluence chamber (9) are in sliding connection; The cover (3) is provided with a positioning portion (23) having a first positioning hole (22) at the outer end portion, and the confluence chamber (9) is correspondingly provided with a second positioning hole and is adapted with a positioning pin (24).

5. The casting polishing device according to claim 4, characterized in that: The barrel (8) is provided with an elastic sealing member surrounding the access opening (2) on the outer side of the barrel wall, so as to form a seal when the cover (3) covers the access opening (2).

6. The casting polishing device according to claim 2, characterized in that: The collecting chamber (9) is provided with a slag discharge pipe (25) extending downward, and the lower end of the slag discharge pipe (25) is detachably connected to the slag collecting chamber (26); The slag discharge pipe (25) is provided with a return air branch pipe (27) above the slag collection chamber (26), and the reflux interface (12) is provided at one end of the return air branch pipe (27) away from the slag discharge pipe (25); The slag discharge pipe (25) is provided with a filtering mechanism; The filtering mechanism comprises: a cylindrical filter cloth (28), and a frame (29) for pressing two ends of the filter cloth (28) against the inner wall of the pipe; The filter cloth (28) is intercepted at the connection point between the slag discharge pipe (25) and the return air branch pipe (27).

7. The casting polishing device according to claim 6, characterized in that: A sealing member (30) is provided in the slag collecting chamber (26); The sealing member (30) comprises: a sealing cone (31) which is smaller at the top and larger at the bottom, and a guide cylinder (32) connected to the bottom of the sealing cone (31); A guide column (33) cooperating with the guide cylinder (32) is provided at the bottom of the slag collecting chamber (26); A compression spring (34) is provided at the top of the guide column (33) to apply an upward thrust to the sealing member (30); The maximum diameter of the sealing cone (31) is greater than the inner diameter of the slag discharge pipe (25), so as to seal the lower end of the slag discharge pipe (25) under the drive of the compression spring (34).

8. The casting polishing device according to any one of claims 2 to 7, characterized in that: It also includes: support platforms (35) arranged at both ends of the polishing barrel (1); A ring frame (36) is arranged on the top of the support platform (35), and the collection chamber (9) is installed in the ring frame (36); The turntable (4) is rotatably connected to the ring frame (36) via a slewing bearing (37); The first power source (7) is installed on the top of the support platform (35).

9. The casting polishing device according to claim 8, characterized in that: The first power source (7) is an AC coil; When the AC coil and the DC electromagnet (5) are energized, the AC coil applies force to the DC electromagnet (5) through the changing magnetic field generated by the AC coil, thereby driving the turntable (4) to rotate.

10. The casting polishing device according to claim 8, characterized in that: A wire tube (38) extending upward is installed on the top of the storage battery (6), and a power connection chamber (39) is provided on the top of the wire tube (38); The power connection chamber (39) is provided with brushes and slip rings; The slip ring is electrically connected to the battery (6), and the brush is electrically connected to the DC electromagnet (5).

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