A device for grinding sharp parts of metal blanks

Abstract

The present invention belongs to the technical field of metal blank grinding, and discloses a device for grinding and processing the sharp part of a metal blank, comprising a base, a clamping device installed on the base, a limit assembly, the limit assembly is fixedly mounted on the base, and a grinding assembly, the grinding assembly is arranged inside the limit assembly. The present invention grinds the side edge of the end face of a metal cylindrical blank by rotating a grinding sheet, and the first transmission wheel drives the fixed plate and the guide wheel to rotate during the rotation process, and the guide wheel performs a circular motion along the side of the fixed ring, and the side edge of the end face of the metal cylindrical blank is alternately grinded by six cleaning plates and grinding sheets, and the discharge of grinding dust can be facilitated by alternating grinding, and the problem of grinding dust being difficult to discharge between the grinding sheet and the metal blank due to the long-term contact between the grinding sheet and the metal blank is avoided, and the service life of the grinding sheet can be increased by alternating grinding.

Description

Technical Field

[0001] The invention belongs to the technical field of metal blank grinding, in particular to a device for grinding and processing a sharp part of a metal blank. Background Art

[0002] Metal billets are an important link in the metal processing industry chain. They refer to the raw materials used for further processing into final products during the metal processing process. Metal billets can be divided into many types, such as ferrous metal billets (such as steel materials), non-ferrous metal billets (such as copper, aluminum, zinc, etc.), special metal material billets, etc. At present, in order to facilitate subsequent processing, metal cylindrical billets usually need to be polished on the side edges of their end faces, and the existing cylindrical metal billets are mostly polished with grinding sandpaper to polish the side edges of their end faces. However, in the existing process of polishing the cylindrical metal billets with sandpaper, the sandpaper is always in contact with the side edges of the metal end faces, resulting in the grinding iron powder always being located between the sandpaper and the metal billet and being difficult to discharge, thereby reducing the contact area between the sandpaper and the metal billet, reducing the efficiency of grinding the metal billet, and increasing the loss of sandpaper. Therefore, a sharp part grinding processing device for metal billets is proposed. Summary of the invention

[0003] In order to solve the problems raised in the above-mentioned background technology, the present invention provides a device for grinding and processing the sharp parts of metal blanks, which solves the problem that in the existing process of grinding cylindrical metal blanks with sandpaper, the sandpaper is always in contact with the side edge of the metal end face, resulting in the grinding iron powder always being located between the sandpaper and the metal blank and difficult to be discharged, thereby reducing the contact area between the sandpaper and the metal blank and reducing the grinding efficiency of the metal blank.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a device for grinding and processing sharp parts of metal blanks, comprising a base, a clamping device is installed on the base, and further comprising:

[0005] A limiting component, wherein the limiting component is fixedly mounted on the base;

[0006] A grinding component, wherein the grinding component is arranged inside the limiting component;

[0007] A collecting component, the collecting component is installed inside the limiting component;

[0008] The position limiting assembly comprises a shell fixedly mounted on the base, a fixing ring is fixedly mounted inside the shell, a second transmission wheel is provided on the movable sleeve of the inner wall of the fixing ring, a first transmission wheel is provided on the movable sleeve inside the shell, and a convex block is provided in an annular array on the side of the fixing ring, and the convex block is in the shape of an isosceles trapezoid with an arc edge;

[0009] The grinding assembly includes a first transmission rod movably mounted on the first transmission wheel and the second transmission wheel, a return spring is mounted on the outside of the first transmission rod, one end of the return spring is elastically connected to the side of the first transmission wheel, one end of the first transmission rod is hinged with a cleaning plate through a first support rod, a grinding sheet is arranged on the inner side of the cleaning plate, a fixing plate is fixedly mounted on the other end of the first transmission rod, and a guide wheel is installed on the side of the fixing plate.

[0010] Preferably, there are six grinding assemblies, three of which are in contact with the protrusions under the action of a return spring, and the other three are in contact with the side of the fixing ring under the action of a return spring;

[0011] The first transmission wheel and the second transmission wheel drive the first transmission rod, the fixing plate and the guide wheel to rotate, and the guide wheel performs a circular motion along the side of the fixing ring and rolls and undulates on the protrusion.

[0012] Preferably, the cross-section of the cleaning plate and the grinding sheet is in an "L" shape, and six cleaning plates and grinding sheets are combined to form a ring.

[0013] Preferably, the housing is kept horizontal with the clamping device, and the cylindrical metal blank is fixed on the clamping device.

[0014] Preferably, a driving motor is installed on the top of the housing, and the driving motor is sleeved with the first transmission wheel via a transmission belt.

[0015] Preferably, the grinding assembly also includes a second support rod hinged on the first support rod, one end of the second support rod is hinged with a second transmission rod, a side portion of the fixed plate is fixed with a limiting cylinder, the second transmission rod passes through the first transmission wheel and the fixed ring, a slot is provided on the outside of the limiting cylinder, and one end of the second transmission rod passes through the limiting cylinder.

[0016] Preferably, the outer diameter of the limiting cylinder gradually increases from the outer end to the fixing plate, and the limiting cylinder is fixed in the limiting cylinder by cooperating with a bolt.

[0017] Preferably, the collecting assembly includes a connecting frame fixedly mounted on the inner wall of the outer shell, a connecting rod fixedly mounted on the side of the connecting frame, one end of the connecting rod is connected to a protective cover, a magnet is fixedly mounted inside the protective cover, an impeller is externally sleeved on the connecting rod, the outside of the impeller is fixedly connected to the inner wall of the first transmission wheel, one end of the impeller is connected to a docking rod, and one end of the docking rod is connected to a scraper.

[0018] Preferably, the scraper has a "U"-shaped cross section, the scraper is attached to the outside of the protective cover, and the scraper moves in a circular motion along the outside of the protective cover.

[0019] Preferably, an inverted "V"-shaped protrusion is provided on the inner wall of the protective cover, and a "V"-shaped groove adapted to the "V"-shaped protrusion is provided on the outside of the magnet.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The present invention grinds the side edge of the end face of the metal cylindrical blank by rotating the grinding sheet, and the first transmission wheel drives the fixed plate and the guide wheel to rotate during the rotation, and the guide wheel makes a circular motion along the side of the fixed ring. During the rotation of the six guide wheels, three of the guide wheels gradually contact with the protrusions, driving three of the grinding sheets to gradually break away from the contact with the side edges of the end face of the metal cylinder, while the other three guide wheels break away from the contact with the protrusions, and under the action of the reset spring, the other three grinding sheets are brought into contact with the end face of the metal cylindrical blank to grind the side edges of the end face, and the side edges of the end face of the metal cylindrical blank are alternately grinded by six cleaning plates and the grinding sheets, and the alternate grinding can facilitate the discharge of grinding dust, avoid the problem that the grinding dust is located between the grinding sheet and the metal blank and is difficult to discharge due to the long-term contact between the grinding sheet and the metal blank, and at the same time, the alternate grinding can increase the service life of the grinding sheet;

[0022] The present invention can loosen the second transmission rod by reversely rotating the external bolt of the limit cylinder, so as to pull the second transmission rod, the second support rod and the first support rod in sequence, so that the first support rod rotates at the hinge with the first transmission rod, and the cleaning plate and the grinding sheet move toward the outer end through the rotation of the first support rod, so as to expand the inner diameters of the six cleaning plates and the grinding sheets, so as to expand or reduce the inner diameters of the six cleaning plates and the grinding sheets, and can meet the requirements of grinding the side edges of the end faces of metal blanks with different outer diameters;

[0023] The present invention drives a first transmission wheel and a grinding component by a motor to grind the side edge of the end face of a metal cylindrical blank. The first transmission wheel drives an impeller to rotate during rotation, thereby exhausting air at one end of an outer shell. The gas enters the outer shell through a gap between the metal blank and the outer shell. When the airflow enters the outer shell, it drives the grinding component to generate dust during the grinding of the metal blank. At the same time, the dust on the grinding sheet is cleaned by the airflow. The iron dust enters the outer shell and is adsorbed on the outside of the protective cover under the action of the magnetic force of the magnet. The rotation of the impeller drives a scraper to perform a circular motion along the outside of the protective cover through a docking rod. The scraper pushes the metal dust adsorbed on the outside of the protective cover. The metal dust moves along the outside of the protective cover and moves into the "V" area of ​​the protective cover. At this time, the iron dust loses its magnetic force and falls downward under the action of its own gravity, thereby avoiding the problem of excessive dust and difficulty in collection during the grinding of the metal blank. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall appearance structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the appearance structure of the limiting component, the collecting component and the polishing component of the present invention;

[0026] Figure 3 It is a schematic diagram of the planar structure of the grinding assembly of the present invention;

[0027] Figure 4 This is a schematic diagram of the internal structure of the limit assembly of the present invention;

[0028] Figure 5 It is a schematic diagram of the coordination structure of the limiting component, the collecting component and the polishing component of the present invention;

[0029] Figure 6 This is a schematic diagram of the matching structure of the grinding assembly and the limiting assembly of the present invention;

[0030] Figure 7 This is a schematic diagram of the exploded structure of the grinding assembly of the present invention;

[0031] Figure 8 This is a schematic diagram of the cross-sectional structure of the collecting component of the present invention;

[0032] Fig. 9 It is a schematic diagram of the cross-sectional structure of the protective cover and the magnet of the present invention.

[0033] In the figure: 1. clamping device; 2. limit assembly; 21. fixing ring; 22. bump; 23. first transmission wheel; 24. second transmission wheel; 25. housing; 3. collecting assembly; 31. impeller; 32. connecting frame; 33. connecting rod; 34. docking rod; 35. scraper; 36. magnet; 37. protective cover; 4. grinding assembly; 41. cleaning plate; 411. limit cylinder; 412. second transmission rod; 413. second support rod; 42. grinding sheet; 43. first transmission rod; 44. reset spring; 45. fixing plate; 46. guide wheel; 47. first support rod; 5. base. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] like Figures 1 to 9 As shown, the present invention provides a device for grinding and processing sharp parts of metal blanks, comprising a base 5, a clamping device 1 is installed on the base 5, and further comprising:

[0036] The limiting component 2 is fixed on the base 5;

[0037] A grinding component 4, which is arranged inside the limiting component 2;

[0038] A collecting component 3, which is installed inside the limiting component 2;

[0039] The limiting assembly 2 includes a housing 25 fixedly mounted on the base 5, a fixing ring 21 is fixedly mounted inside the housing 25, a second transmission wheel 24 is movably sleeved on the inner wall of the fixing ring 21, a first transmission wheel 23 is movably sleeved inside the housing 25, and a convex block 22 is provided in an annular array on the side of the fixing ring 21, and the convex block 22 is in the shape of an arc-edge isosceles trapezoid;

[0040] The grinding assembly 4 includes a first transmission rod 43 movably sleeved on the first transmission wheel 23 and the second transmission wheel 24, a return spring 44 is sleeved on the outside of the first transmission rod 43, one end of the return spring 44 is elastically connected to the side of the first transmission wheel 23, one end of the first transmission rod 43 is hinged to a cleaning plate 41 through a first support rod 47, a grinding sheet 42 is arranged on the inner side of the cleaning plate 41, and a fixing plate 45 is fixedly mounted on the other end of the first transmission rod 43, and a guide wheel 46 is installed on the side of the fixing plate 45;

[0041] There are six grinding assemblies 4, of which three guide wheels 46 are in contact with the protrusion 22 under the action of the return spring 44, and the other three guide wheels 46 are in contact with the side of the fixing ring 21 under the action of the return spring 44;

[0042] The first transmission wheel 23 and the second transmission wheel 24 drive the first transmission rod 43, the fixing plate 45 and the guide wheel 46 to rotate, and the guide wheel 46 makes a circular motion along the side of the fixing ring 21 and rolls and fluctuates on the protrusion 22;

[0043] The cleaning plates 41 and the grinding plates 42 have an "L" shape in cross section, and six cleaning plates 41 and the grinding plates 42 are combined to form a ring;

[0044] The housing 25 is kept horizontal with the clamping device 1, and the cylindrical metal blank is fixed on the clamping device 1;

[0045] A driving motor is installed on the top of the housing 25 , and the driving motor is sleeved with the first driving wheel 23 via a driving belt.

[0046] The above scheme is adopted: the cylindrical metal blank is fixed on the clamping device 1, and the clamping device 1 pushes the metal cylindrical blank to move toward the limiting component 2 and the grinding component 4, and the metal cylindrical blank contacts the inner walls of three grinding sheets 42, and because the cleaning plate 41 and the grinding sheet 42 are in an "L" shape, they will fit on the outer edge angle of the end face of the cylindrical metal blank, and the first transmission wheel 23, the first support rod 47, the cleaning plate 41 and the grinding sheet 42 are driven by the motor to rotate, and the side edge of the end face of the metal cylindrical blank is polished by the rotation of the grinding sheet 42, and the rotation of the first transmission wheel 23 drives the fixed plate 45 and the guide wheel 46 to rotate, and the guide wheel 46 makes a circular motion along the side of the fixed ring 21, and during the rotation of the six grinding components 4, three of the guide wheels 46 contact the side of the fixed ring 21, so that three of the grinding sheets 42 contact the side edge of the metal cylindrical end face, and the other three guide wheels 46 contact the protrusion 22, so that the other three grinding sheets 42 contact the side edge of the metal cylindrical end face. The grinding disc 42 does not contact the end face of the metal cylindrical blank. During the rotation of the six guide wheels 46, three of the guide wheels 46 gradually contact the protrusion 22, driving three of the grinding discs 42 to gradually disengage from the contact with the side edges of the metal cylindrical end face, while the other three guide wheels 46 disengage from the contact with the protrusion 22. Under the action of the reset spring 44, the other three grinding discs 42 are brought into contact with the end face of the metal cylindrical blank to grind its side edges. In this way, the side edges of the end faces of the metal cylindrical blank are alternately polished by the six cleaning plates 41 and the grinding discs 42. Alternating polishing can facilitate the discharge of grinding dust, avoid the problem that the grinding dust is located between the grinding disc 42 and the metal blank and is difficult to discharge due to the long-term contact between the grinding disc 42 and the metal blank. At the same time, alternating polishing can increase the service life of the grinding disc 42, and cooperate with the clamping device 1 to drive the metal cylindrical blank to rotate itself, so that the grinding effect of the side edges of the metal blank end faces is better.

[0047] like Figure 4-Figure 7 As shown, the grinding assembly 4 also includes a second support rod 413 hinged on the first support rod 47, one end of the second support rod 413 is hinged with a second transmission rod 412, the second transmission rod 412 penetrates the first transmission wheel 23 and the fixing ring 21, and the side of the fixing plate 45 is fixedly equipped with a limiting cylinder 411;

[0048] A notch is formed on the outside of the limiting cylinder 411, and one end of the second transmission rod 412 passes through the limiting cylinder 411;

[0049] The outer diameter of the limiting cylinder 411 gradually increases from the outer end to the fixing plate 45 , and the limiting cylinder 411 is fixed to the second transmission rod 412 in the limiting cylinder 411 by cooperating with the bolts.

[0050] The above scheme is adopted: when the side edge of the cylindrical metal end face is polished by the polishing assembly 4, the external bolts of the limit cylinder 411 are rotated in the reverse direction to loosen the second transmission rod 412, and the second transmission rod 412, the second support rod 413 and the first support rod 47 can be pulled in turn, so that the first support rod 47 rotates at the hinge with the first transmission rod 43, and the cleaning plate 41 and the polishing sheet 42 are moved toward the outer end by the rotation of the first support rod 47, thereby expanding the inner diameters of the six cleaning plates 41 and the polishing sheet 42, so that the inner diameters of the six cleaning plates 41 and the polishing sheet 42 can be expanded or reduced, and after the adjustment is completed, the bolts outside the limit cylinder 411 are rotated to squeeze the limit cylinder 411, and the second transmission rod 412 is fixed in the limit cylinder 411, so as to meet the grinding processing of the side edges of the end faces of metal blanks with different outer diameters.

[0051] like Figure 4 , Figure 5 , Figure 8 and Fig. 9 As shown, the collecting assembly 3 includes a connecting frame 32 fixedly mounted on the inner wall of the housing 25, a connecting rod 33 is fixedly mounted on the side of the connecting frame 32, one end of the connecting rod 33 is connected to a protective cover 37, a magnet 36 is fixedly mounted inside the protective cover 37, an impeller 31 is sleeved on the outside of the connecting rod 33, the outside of the impeller 31 is fixedly connected to the inner wall of the first transmission wheel 23, one end of the impeller 31 is connected to a docking rod 34, and one end of the docking rod 34 is connected to a scraper 35;

[0052] The scraper 35 has a U-shaped cross section, and is attached to the outside of the protective cover 37. The scraper 35 moves in a circular motion along the outside of the protective cover 37.

[0053] An inverted "V"-shaped protrusion is arranged on the inner wall of the protective cover 37, and a "V"-shaped groove matching with the "V"-shaped protrusion is arranged on the outer side of the magnet 36.

[0054] The above scheme is adopted: the clamping device 1 is used to push the metal cylindrical blank toward one end of the limiting component 2 to shorten the distance between them, and contact with the grinding component 4, and the first transmission wheel 23 and the grinding component 4 are driven by the motor to grind the side edge of the end face of the metal cylindrical blank. The first transmission wheel 23 drives the impeller 31 to rotate during the rotation, so that one end of the shell 25 is evacuated, and the gas enters the shell 25 through the gap between the metal blank and the shell 25. At the same time, when the airflow enters the shell 25, it will drive the grinding component 4 to generate dust during the grinding process of the metal blank, and at the same time, the airflow enters the shell 25. The passing airflow cleans the dust on the grinding sheet 42, and the iron dust enters the outer shell 25 and is adsorbed on the outside of the protective cover 37 under the action of the magnetic force of the magnet 36. The impeller 31 rotates through the docking rod 34 to drive the scraper 35 to make a circular motion along the outside of the protective cover 37, and the scraper 35 pushes the metal dust adsorbed on the outside of the protective cover 37. The metal dust moves along the outside of the protective cover 37 and moves into the "V" area of ​​the protective cover 37. At this time, the iron dust loses its magnetic force and falls downward under the action of its own gravity, avoiding the problem of excessive dust and difficulty in collection during the grinding of metal billets.

[0055] The working principle and use process of the present invention:

[0056] When the side edge of the cylindrical metal end face is polished by the polishing assembly 4, the outer bolts of the limiting cylinder 411 are rotated in the reverse direction to loosen the second transmission rod 412, and the second transmission rod 412, the second support rod 413 and the first support rod 47 can be pulled in sequence, so that the first support rod 47 rotates at the hinge with the first transmission rod 43, and the cleaning plate 41 and the polishing sheet 42 are moved toward the outer end by the rotation of the first support rod 47, so as to expand the inner diameters of the six cleaning plates 41 and the polishing sheet 42, so that the inner diameters of the six cleaning plates 41 and the polishing sheet 42 can be expanded or reduced. After the adjustment is completed, the bolts outside the limiting cylinder 411 are rotated to squeeze the limiting cylinder 411, and the second transmission rod 412 is fixed in the limiting cylinder 411;

[0057] The cylindrical metal blank is fixed on the clamping device 1, and the clamping device 1 pushes the metal cylindrical blank to move toward the limiting component 2 and the grinding component 4, and the metal cylindrical blank contacts the inner walls of three grinding sheets 42, and because the cleaning plate 41 and the grinding sheet 42 are in an "L" shape, they will fit on the outer edge of the end face of the cylindrical metal blank, and the first transmission wheel 23, the first support rod 47, the cleaning plate 41 and the grinding sheet 42 are driven by the motor to rotate, and the side edge of the end face of the metal cylindrical blank is polished by the rotation of the grinding sheet 42, and the rotation of the first transmission wheel 23 drives the fixed plate 45 and the guide wheel 46 to rotate, and the guide wheel 46 makes a circular motion along the side of the fixed ring 21, and during the rotation of the six grinding components 4, three of the guide wheels 46 contact the side of the fixed ring 21, so that three of the grinding sheets 42 are in contact with the end face of the metal cylinder. The other three guide wheels 46 are in contact with the protrusion 22, so that the other three grinding sheets 42 do not contact the end face of the metal cylindrical blank. During the rotation of the six guide wheels 46, three of the guide wheels 46 gradually contact with the protrusion 22, driving three of the grinding sheets 42 to gradually break away from the contact with the side edges of the metal cylindrical end face, while the other three guide wheels 46 break away from the contact with the protrusion 22. Under the action of the reset spring 44, the other three grinding sheets 42 are in contact with the end face of the metal cylindrical blank to grind the side edges of the end face. In this way, the side edges of the end face of the metal cylindrical blank are alternately polished by the six cleaning plates 41 and the grinding sheets 42. Alternating grinding can facilitate the discharge of grinding dust, avoid the grinding sheet 42 from being in contact with the metal blank for a long time, resulting in the grinding dust being located between the grinding sheet 42 and the metal blank and being difficult to discharge.

[0058] The first transmission wheel 23 and the grinding assembly 4 are driven by the motor to grind the side edge of the end face of the metal cylindrical blank. The first transmission wheel 23 drives the impeller 31 to rotate during its rotation, so that one end of the shell 25 is evacuated, and the gas enters the shell 25 through the gap between the metal blank and the shell 25. At the same time, when the airflow enters the shell 25, it will drive the grinding assembly 4 to generate dust during the grinding of the metal blank. At the same time, the dust on the grinding sheet 42 is cleaned by the airflow, and the iron dust enters the shell 25 and is adsorbed on the outside of the protective cover 37 under the action of the magnetic force of the magnet 36. The rotation of the impeller 31 drives the scraper 35 to make a circular motion along the outside of the protective cover 37 through the docking rod 34, and the metal dust adsorbed on the outside of the protective cover 37 is pushed by the scraper 35. The metal dust moves along the outside of the protective cover 37 and moves to the "V" area of ​​the protective cover 37. At this time, the iron dust loses its magnetic force and falls downward under the action of its own gravity, so as to avoid excessive dust during the grinding of the metal blank.

[0059] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0060] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for grinding a sharp part of a metal blank, comprising a base (5), on which a clamping device (1) is mounted, characterized in that: Also includes, A limit assembly (2), the limit assembly (2) being fixedly mounted on the base (5); A grinding component (4), wherein the grinding component (4) is arranged inside the limiting component (2); A collecting component (3), the collecting component (3) being installed inside the limiting component (2); The position limiting assembly (2) comprises a housing (25) fixedly mounted on the base (5); a fixing ring (21) is fixedly mounted inside the housing (25); a second transmission wheel (24) is provided on the inner wall of the fixing ring (21); a first transmission wheel (23) is provided on the inner wall of the housing (25); a convex block (22) is provided in an annular array on the side of the fixing ring (21); the convex block (22) is in the shape of an isosceles trapezoid with an arc edge; The grinding assembly (4) comprises a first transmission rod (43) movably sleeved on the first transmission wheel (23) and the second transmission wheel (24); a return spring (44) is sleeved on the outside of the first transmission rod (43); one end of the return spring (44) is elastically connected to the side of the first transmission wheel (23); one end of the first transmission rod (43) is hinged to a cleaning plate (41) via a first support rod (47); a grinding sheet (42) is arranged on the inner side of the cleaning plate (41); a fixing plate (45) is fixedly mounted on the other end of the first transmission rod (43); a guide wheel (46) is installed on the side of the fixing plate (45); There are six grinding assemblies (4), three of which are in contact with the protrusion (22) under the action of the return spring (44), and the other three are in contact with the side of the fixing ring (21) under the action of the return spring (44); The first transmission wheel (23) and the second transmission wheel (24) drive the first transmission rod (43), the fixing plate (45) and the guide wheel (46) to rotate, and the guide wheel (46) performs a circular motion along the side of the fixing ring (21) and rolls and undulates on the protrusion (22).

2. The sharp part grinding device for metal blank according to claim 1, characterized in that: The cleaning plates (41) and the grinding plates (42) have cross-sections in an "L" shape, and six cleaning plates (41) and grinding plates (42) are combined to form a circular ring.

3. The sharp part grinding device for metal blank according to claim 2, characterized in that: The housing (25) and the clamping device (1) are kept horizontal, and the cylindrical metal blank is fixed on the clamping device (1).

4. The sharp part grinding device for metal blank according to claim 3, characterized in that: A driving motor is installed on the top of the housing (25), and the driving motor is sleeved with the first driving wheel (23) via a driving belt.

5. The sharp part grinding device for metal blank according to claim 4, characterized in that: The grinding assembly (4) further comprises a second support rod (413) hingedly connected to the first support rod (47); one end of the second support rod (413) is hingedly connected to a second transmission rod (412); a limiting cylinder (411) is fixedly mounted on the side of the fixing plate (45); the second transmission rod (412) passes through the first transmission wheel (23) and the fixing ring (21); a notch is formed on the outside of the limiting cylinder (411); one end of the second transmission rod (412) passes through the limiting cylinder (411).

6. The sharp part grinding device for metal blank according to claim 5, characterized in that: The outer diameter of the limiting cylinder (411) gradually increases from the outer end to the fixing plate (45), and the limiting cylinder (411) is used to fix the second transmission rod (412) in the limiting cylinder (411) by cooperating with a bolt.

7. The sharp part grinding processing device of metal blank according to claim 3, characterized in that: The collecting assembly (3) comprises a connecting frame (32) fixedly mounted on the inner wall of the outer shell (25); a connecting rod (33) is fixedly mounted on the side of the connecting frame (32); one end of the connecting rod (33) is connected to a protective cover (37); a magnet (36) is fixedly mounted inside the protective cover (37); an impeller (31) is sleeved on the outside of the connecting rod (33); the outside of the impeller (31) is fixedly connected to the inner wall of the first transmission wheel (23); one end of the impeller (31) is connected to a docking rod (34); and one end of the docking rod (34) is connected to a scraper (35).

8. The sharp part grinding device for metal blank according to claim 7, characterized in that: The scraper (35) has a U-shaped cross section, and the scraper (35) is attached to the outside of the protective cover (37). The scraper (35) moves in a circular motion along the outside of the protective cover (37).

9. The sharp part grinding device for metal blank according to claim 8, characterized in that: An inverted "V"-shaped protrusion is provided on the inner wall of the protective cover (37), and a "V"-shaped groove adapted to the "V"-shaped protrusion is provided on the outside of the magnet (36).

Images