Accurate grinding device for hardware machining and using method thereof

Abstract

The invention relates to the technical field of hardware machining, in particular to an accurate grinding device for hardware machining and a using method thereof.The accurate grinding device comprises a table top, a fixing piece is arranged at the top of the table top, an electric guide rail is fixedly connected to the top of the table top, a grinding mechanism is arranged on the left side of the electric guide rail, and a falling hopper is installed at the bottom of the table top. According to the accurate grinding device for hardware machining and the using method of the accurate grinding device, by arranging the grinding mechanism, when a grinding abrasive belt needs to be replaced according to the machining requirement, a lead screw can be rotated along a fixed frame, a movable frame connected with the lead screw can get close to the fixed frame, and at the moment, the abrasive belt and a rolling wheel are loosened; and the abrasive belt can be conveniently taken out from the front sides of the two rolling wheels and replaced, the abrasive belt can be fixed to the outer sides of the two rolling wheels again by rotating the lead screw reversely after replacement is completed, the distance between the movable frame and the fixed frame is prolonged, the abrasive belt can be tensioned, and the abrasive belt fixing device has the advantages that the abrasive belt fixing device can be installed and used for abrasive belts of different specifications.

Description

Technical Field

[0001] The present invention relates to the technical field of hardware processing, and particularly to a precision grinding device for hardware processing and its usage method. Background Art

[0002] As is well known, precision grinding in hardware processing is a key process of micro-grinding the surface of workpieces through high-precision grinding tools to achieve high dimensional accuracy and low surface roughness. It is commonly used for parts with high precision requirements, and its process level directly affects the reliability of high-end equipment. By reasonably selecting equipment, grinding tools, and process parameters, and combining intelligent technologies, the precision grinding efficiency and processing quality can be effectively improved.

[0003] The problems existing in the prior art are as follows: When performing precision grinding of hardware parts, grinding wheels or sand belts are mostly used for grinding. Due to the high precision requirements, it is often necessary to adjust the grinding effect of the grinding equipment in different workpiece states. When using a grinding wheel for grinding, if it is necessary to adjust the roughness of the grinding disc, it can be completed by quickly disassembling the grinding disc. When using a sand belt for grinding, not only is the disassembly and installation troublesome, but also it is necessary to re-tension the sand belt after replacing it, and the efficiency is low. Moreover, when processing different types of hardware workpieces, such as pipe parts or shaft parts, it is necessary to frequently replace the fixtures, which is inconvenient to use.

[0004] Based on the above-mentioned situation, we found that it is difficult for the precision grinding device for hardware processing in the prior art to avoid the above problems at the same time. Therefore, we propose a precision grinding device for hardware processing that can quickly adjust the sand belt and is convenient for quickly fixing different types of workpieces. Summary of the Invention

[0005] (1) Technical Problems to be Solved

[0006] In view of the deficiencies of the prior art, the present invention provides a precision grinding device for hardware processing and its usage method, which has the advantages of being able to quickly adjust the sand belt and being convenient for quickly fixing different types of workpieces.

[0007] (2) Technical Solutions

[0008] The above technical objectives of the present invention are achieved through the following technical solutions: A precision grinding device for hardware processing, including a tabletop, a fixing member is provided on the top of the tabletop, an electric guide rail is fixedly connected to the top of the tabletop, a grinding mechanism is provided on the left side of the electric guide rail, and a hopper is installed at the bottom of the tabletop;

[0009] The grinding mechanism includes a fixed frame and a sand belt. A back frame is fixedly connected to the right side of the bottom of the fixed frame. A lead screw is threadedly connected to the inside of the fixed frame. A moving frame is rotatably connected to the rear side of the lead screw. Rotating shafts are rotatably connected to the left side of the moving frame and the inside of the back frame respectively. A roller is installed on the outside of each rotating shaft. The inside of the sand belt is movably connected to the two rollers. The right side of the back frame is externally connected to a driving motor, and the output end of the driving motor is fixedly connected to the front rotating shaft.

[0010] The fixing member includes a fixed tube. A sliding sleeve is slidably connected to the outside of the fixed tube. A connecting rod is rotatably connected to the outside of the sliding sleeve. An outer frame is fixedly connected to the right side of the outside of the fixed tube. A clamping rod is rotatably connected to the inside of the outer frame. A friction sleeve is rotatably connected to the outside of the right side of the clamping rod. The left side of the clamping rod is rotatably connected to the connecting rod. A cooling fan is installed inside the fixed tube.

[0011] With the above technical solution, a tabletop is provided for installing and supporting the structure. By providing an electric guide rail, the position of the grinding mechanism can be easily adjusted to facilitate position adjustment as needed. By providing the grinding mechanism, when in use, a hardware workpiece can be directly installed on the outside of the fixing member, and then the rotating shaft is driven to rotate by an externally connected driving motor. The sand belt on the outside of the right rotating shaft and the roller will drive the left roller and the rotating shaft to rotate, so as to drive the sand belt to move and achieve the extrusion effect of grinding the contact position. At this time, the fixed frame and the back frame are used to fix the grinding mechanism and are installed outside the electric guide rail. When the grinding sand belt needs to be replaced according to the processing requirements, the lead screw can be rotated along the fixed frame, and the connected moving frame will approach the fixed frame. At this time, the sand belt and the roller are disengaged, and it can be conveniently taken out and replaced from the front side of the two rollers. After the replacement is completed, reversing the lead screw can re-fix the sand belt on the outside of the two rollers. Extending the distance between the moving frame and the fixed frame can also tighten the sand belt, and sand belts of different specifications can also be installed and used. When fixing the workpiece through the fixing member, if it is a shaft-like part, it can be placed on the right side of the fixed tube and slid along the fixed tube. The connected outer frame will push and pull the clamping rod to rotate along the outer frame, and contact the workpiece through the friction sleeve and clamp it to complete the fixation of the workpiece. When a pipe-like workpiece needs to be installed, the pipe-like workpiece can be sleeved on the outside of multiple friction sleeves, and the sliding sleeve is moved to make it away from the outer frame. At this time, the connecting rod will pull the clamping rod to rotate along the outer frame, so that multiple friction sleeves are pushed outwards to quickly fix it from the inside of the pipe-like part, which is suitable for the processing of a variety of different hardware workpieces.

[0012] The present invention is further configured as follows: A sliding rod is fixedly connected to the front side of the moving frame. The outside of the sliding rod is slidably connected to the fixed frame. A sliding strip is provided at the rear side of the back frame. The outside of the sliding strip is slidably connected to the moving frame.

[0013] With the above technical solution, by setting the sliding rod to cooperate with the fixed frame, it is convenient to limit the moving direction of the moving frame to be horizontal, avoiding the moving frame rotating or tilting together when the lead screw rotates.

[0014] The present invention is further configured as: the electric guide rail includes a horizontal guide rail and a vertical guide rail. The inner side of the horizontal guide rail is installed through a slider and the vertical guide rail, and the inner side of the vertical guide rail is fixedly connected with a connecting seat through a slider.

[0015] With the above technical solution, by setting the horizontal guide rail to cooperate with the vertical guide rail, the connecting seat and the grinding structure connected thereto can move horizontally and vertically along the horizontal direction. The connecting seat is used for connecting structures or for disassembly and assembly.

[0016] The present invention is further configured as: a rib plate is fixedly connected to the outer side of the connecting seat, a pressing member is fixedly connected to the bottom of the rib plate, and the bottom of the pressing member is fixedly connected to the fixed frame.

[0017] With the above technical solution, by setting the rib plate, while installing the pressing member and the grinding mechanism at the bottom, it assists in bearing the force. In addition to being a connecting component, the pressing member can also assist the grinding mechanism in grinding.

[0018] The present invention is further configured as: the pressing member includes an empty shell, the inside of the empty shell is filled with liquid, the top of the empty shell is fixedly connected to the rib plate, a sleeve is fixedly connected to the inside of the empty shell, through holes are opened at the top and bottom of the inside of the sleeve, a sliding piece is slidably connected to the inside of the sleeve, a pressing rod is fixedly connected to the bottom of the sliding piece, and the bottom of the pressing rod is fixedly connected to the fixed frame.

[0019] With the above technical solution, by setting the empty shell to cooperate with the sleeve, when grinding with the grinding assembly, the abrasive belt will contact the surface of the workpiece. At this time, the entire grinding mechanism will push the sliding piece through the pressing rod and make the sliding piece slide inside the sleeve. The sliding piece pushes the internal liquid to flow from the inside of the through hole to achieve a damping and buffering effect, avoiding causing excessive damage to the workpiece at one time or exerting pressure on the abrasive belt when the grinding feed amount of the grinding mechanism is too large, but making it slowly approach the workpiece and perform a fine grinding operation.

[0020] The present invention is further configured as: the outside of the pressing rod is slidably connected to the empty shell through an oil seal, a spring is sleeved on the outside of the pressing rod, and the top and bottom of the spring are fixedly connected to the empty shell and the fixed frame respectively.

[0021] With the above technical solution, by setting the oil seal to connect the empty shell and the pressing rod, liquid leakage can be avoided when the pressing rod moves. The set spring is used to push the structure to reset after the structure stops bearing force.

[0022] The present invention is further configured such that: a guide frame is fixedly connected to the top of the tabletop, a threaded rod is rotatably connected to the inside of the guide frame, a control motor is externally connected to the top of the guide frame, the output end of the control motor is fixedly connected to the threaded rod, a transmission block is threadedly connected to the outside of the threaded rod, the outside of the transmission block is slidably connected to the guide frame, a matching sleeve is fixedly connected to the rear side of the transmission block, and the inside of the matching sleeve is fixedly connected to the fixed pipe.

[0023] With the above technical solution, by arranging the guide frame in cooperation with the threaded rod, when the control motor drives the threaded rod to rotate, the connected transmission block and the matching sleeve will drive the entire fixing member to move in the vertical direction, so as to facilitate the adjustment of the grinding position of the workpiece.

[0024] The present invention is further configured such that: a control telescopic cylinder is fixedly connected to the top of the matching sleeve, and the telescopic end of the control telescopic cylinder is fixedly connected to the sliding sleeve.

[0025] With the above technical solution, by arranging the control telescopic cylinder, it is convenient to push and pull the sliding sleeve to slide, so as to drive the clamping of the workpiece by the structure.

[0026] The present invention is further configured such that: a torsion spring is fixedly connected to the outside of the clamping rod, and one side of the torsion spring close to the friction sleeve is fixedly connected to the friction sleeve;

[0027] Two electric cylinders are fixedly connected to the top of the tabletop, the telescopic ends of the electric cylinders are rotatably connected to rotating shafts, the top of the right rotating shaft is rotatably connected to the bottom of the electric guide rail, and a guide block is fixedly connected to the top of the left rotating shaft, and the outside of the guide block is slidably connected to the bottom of the electric guide rail.

[0028] With the above technical solution, by arranging the electric cylinders in cooperation with the rotating shafts, when it is necessary to adjust the grinding angle of the grinding mechanism, the left electric cylinder can be extended or shortened. At this time, the telescopic end of the left electric cylinder pushes and pulls the entire electric guide rail through the rotating shaft, so that it tilts along the top of the right electric cylinder. During the movement, the guide block slides inside the electric slide rail to avoid the structure from getting stuck;

[0029] The present invention is further configured such that: a usage method of a fine grinding device for hardware part processing includes the following steps:

[0030] S1. Fix the structure according to the type of the processed metal workpiece. When fixing a shaft workpiece, place the shaft metal workpiece on the right side of the fixed pipe, start the control telescopic cylinder to shorten, drive the sliding sleeve to slide outward along the fixed pipe, and the sliding sleeve pushes the clamping rod to rotate around the outer frame through the connecting rod, so that the friction sleeve tightens inward to clamp the outer side of the shaft workpiece. When fixing a pipe workpiece, put the pipe metal workpiece on the outer sides of multiple friction sleeves, start the control telescopic cylinder to extend, the sliding sleeve slides inward, the connecting rod pulls the clamping rod to rotate outward, and the friction sleeves expand to clamp the inner wall of the pipe workpiece. If it is necessary to adjust the height of the fixing part, drive the threaded rod to rotate by controlling the motor, and the transmission block drives the matching sleeve and the fixed pipe to move up and down along the guide frame to ensure that the workpiece is aligned with the grinding mechanism;

[0031] S2. Control the movement of the connecting seat through the horizontal guide rail and the vertical guide rail of the electric guide rail to adjust the horizontal position of the grinding mechanism, align the sand belt with the area to be processed of the workpiece, start the driving motor to drive the front roller and the roller to rotate, and the sand belt moves accordingly. At the same time, turn on the cooling fan in the fixed pipe to reduce the temperature rise during workpiece grinding. The grinding mechanism is connected to the rib plate through the pressing part. When the sand belt contacts the workpiece, the pressing rod pushes the sliding piece upward, and the liquid in the sleeve flows through the circulation hole to provide damping and buffering to avoid excessive feed. The spring ensures that the grinding pressure is uniform and stable. The electric guide rail moves according to the preset path to achieve full-area fine grinding of the workpiece surface. The debris generated by grinding is collected through the hopper at the bottom of the table;

[0032] S3. If it is necessary to replace the sand belt, manually rotate the screw rod, the moving frame approaches the fixed frame along the sliding rod, and after the sand belt is loosened, take it out from the front side of the roller. After installing the new sand belt, reverse the screw rod, the moving frame moves away from the fixed frame, and the sand belt is tensioned through the guiding of the sliding strip. For grinding angle adjustment, according to the requirements of the workpiece curved surface, start the left electric cylinder to extend, and adjust the inclination angle of the electric guide rail through the rotating shaft and the guiding block to make the grinding mechanism form a suitable angle with the workpiece surface.

[0033] (III) Beneficial effects

[0034] Compared with the prior art, the present invention provides a fine grinding device for processing metal parts and its usage method, which has the following beneficial effects:

[0035] The fine grinding device for processing hardware parts and its usage method. A tabletop is set for installing and supporting the structure. An electric guide rail is set to facilitate the adjustment of the position of the grinding mechanism for position adjustment as needed. A grinding mechanism is set. When in use, the hardware workpiece can be directly installed outside the fixing part, and then the roller is driven to rotate by an externally connected driving motor. The abrasive belt on the outer sides of the right roller and the roller will drive the left roller and the roller to rotate to drive the abrasive belt to move and achieve the extrusion effect of grinding the contact position. At this time, the fixed frame and the back frame are used to fix the grinding mechanism and are installed outside the electric guide rail. When the grinding abrasive belt needs to be replaced according to processing requirements, the lead screw can be rotated along the fixed frame, and the moving frame connected to it will approach the fixed frame. At this time, the abrasive belt and the roller are loosened, and it can be conveniently taken out and replaced from the front sides of the two rollers. After replacement, reversing the lead screw can fix the abrasive belt on the outer sides of the two rollers again. Extending the distance between the moving frame and the fixed frame can also achieve the effect of tensioning the abrasive belt, and abrasive belts of different specifications can also be installed and used. When fixing the workpiece through the fixing part, if it is a shaft part, it can be placed on the right side of the fixed pipe and slide along the fixed pipe. The outer frame connected to it will push and pull the clamping rod to rotate along the outer frame, and contact the workpiece through the friction sleeve and clamp it to complete the fixation of the workpiece. When installing pipe-shaped workpieces, the pipe-shaped workpiece can be sleeved outside multiple friction sleeves, and the sliding sleeve is moved away from the outer frame. At this time, the connecting rod will pull the clamping rod to rotate along the outer frame, causing multiple friction sleeves to expand outwards to quickly fix it from the inside of the pipe-shaped part, which is applicable to the processing of various different hardware workpieces. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 is a schematic diagram of the structure in the present invention;

[0037] Figure 2 is a schematic diagram of the structure of the fixing part in the present invention;

[0038] Figure 3 is a schematic diagram of the structure of the grinding mechanism in the present invention;

[0039] Figure 4 is a schematic diagram of the structure of the pressing part in the present invention;

[0040] Figure 5 is a schematic diagram of the right side structure of the moving frame in the present invention;

[0041] Figure 6 is a connection schematic diagram of the friction sleeve in the present invention;

[0042] Figure 7 is a schematic diagram of the bottom of the main structure in the present invention;

[0043] Figure 8This is the flow chart of the usage method of the present invention.

[0044] In the figure: 1, table top; 2, electric guide rail; 3, fixing part; 31, fixing pipe; 32, sliding sleeve; 33, connecting rod; 34, outer frame; 35, clamping rod; 36, friction sleeve; 4, grinding mechanism; 41, fixed frame; 42, back frame; 43, lead screw; 44, moving frame; 45, roller; 46, roller wheel; 47, abrasive belt; 5, sliding rod; 6, sliding strip; 7, connecting seat; 8, rib plate; 9, pressing part; 91, hollow shell; 92, sleeve shell; 93, sliding piece; 94, pressing rod; 10, spring; 11, guide frame; 12, threaded rod; 13, transmission block; 14, mating sleeve; 15, control telescopic cylinder; 16, torsion spring; 17, electric cylinder; 18, rotating shaft; 19, guiding block. Specific embodiments

[0045] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0046] Embodiment 1

[0047] Please refer to Figure 1-7 , a fine grinding device for processing hardware parts and its usage method, including a table top 1, a fixing part 3 is arranged on the top of the table top 1, an electric guide rail 2 is fixedly connected to the top of the table top 1, a grinding mechanism 4 is arranged on the left side of the electric guide rail 2, and a hopper is installed at the bottom of the table top 1;

[0048] The grinding mechanism 4 includes a fixed frame 41 and an abrasive belt 47. The right side of the bottom of the fixed frame 41 is fixedly connected to a back frame 42. The inside of the fixed frame 41 is threadedly connected with a lead screw 43. The rear side of the lead screw 43 is rotatably connected to a moving frame 44. The left side of the moving frame 44 and the inside of the back frame 42 are both rotatably connected with rollers 45. The outside of the rollers 45 is provided with roller wheels 46. The inside of the abrasive belt 47 is movably connected to the two roller wheels 46. The right side of the back frame 42 is externally connected to a driving motor, and the output end of the driving motor is fixedly connected to the front roller 45;

[0049] By setting the tabletop 1 for installing and supporting the structure, by setting the electric guide rail 2, it is convenient to adjust the position of the grinding mechanism 4 so as to make position adjustment according to needs. By setting the grinding mechanism 4, when in use, the hardware workpiece can be directly installed on the outside of the fixing member 3, and then the driving motor is externally connected to drive the roller 45 to rotate. The sand belt 47 on the outer sides of the right roller 45 and the roller 46 will drive the left roller 46 and the roller 45 to rotate, so as to drive the sand belt 47 to move and achieve the extrusion effect of grinding the contact position. At this time, the fixed frame 41 and the back frame 42 are used to fix the grinding mechanism 4 and are installed outside the electric guide rail 2. When it is necessary to replace the grinding sand belt 47 according to the processing requirements, the lead screw 43 can be rotated along the fixed frame 41, and the moving frame 44 connected thereto will approach the fixed frame 41. At this time, the sand belt 47 and the roller 46 are loosened, and it can be conveniently taken out and replaced from the front sides of the two rollers 46. After the replacement is completed, reversing the lead screw 43 can fix the sand belt 47 on the outer sides of the two rollers 46 again. Extending the distance between the moving frame 44 and the fixed frame 41 can also achieve the effect of tensioning the sand belt 47, and sand belts 47 of different specifications can also be installed and used.

[0050] Among them, a slide bar 5 is fixedly connected to the front side of the movable frame 44. The outer side of the slide bar 5 is slidably connected to the fixed frame 41. A slide strip 6 is provided on the rear side of the back frame 42. The outer side of the slide strip 6 is slidably connected to the movable frame 44. By providing the slide bar 5 in cooperation with the fixed frame 41, it is convenient to limit the moving direction of the movable frame 44 to be horizontal, avoiding the movable frame 44 rotating or tilting together when the lead screw 43 rotates. The electric guide rail 2 includes a horizontal guide rail and a vertical guide rail. The inner side of the horizontal guide rail is installed through a slider and the vertical guide rail. The inner side of the vertical guide rail is fixedly connected with a connecting seat 7 through a slider. By providing the horizontal guide rail in cooperation with the vertical guide rail, the connecting seat 7 and the grinding structure connected thereto can move horizontally and longitudinally along the horizontal direction. The connecting seat 7 is used for connecting structures or for disassembly and assembly. A rib plate 8 is fixedly connected to the outer side of the connecting seat 7. The bottom of the rib plate 8 is fixedly connected with a pressing member 9. The bottom of the pressing member 9 is fixedly connected to the fixed frame 41. By providing the rib plate 8, while installing the pressing member 9 and the grinding mechanism 4 at the bottom, it assists in bearing the force. In addition to being a connecting component, the pressing member 9 can also assist the grinding mechanism 4 in grinding. The pressing member 9 includes an empty shell 91. The inside of the empty shell 91 is filled with liquid. The top of the empty shell 91 is fixedly connected to the rib plate 8. The inside of the empty shell 91 is fixedly connected with a sleeve 92. Flow holes are provided at the top and bottom inside the sleeve 92. A sliding piece 93 is slidably connected inside the sleeve 92. The bottom of the sliding piece 93 is fixedly connected with a pressing rod 94. The bottom of the pressing rod 94 is fixedly connected to the fixed frame 41. By providing the empty shell in cooperation with the sleeve 92, when grinding with the grinding assembly, the abrasive belt 47 will contact the surface of the workpiece. At this time, the entire grinding mechanism 4 will push the sliding piece 93 through the pressing rod 94, and make the sliding piece 93 slide inside the sleeve 92. The sliding piece 93 pushes the internal liquid to flow from the inside of the flow hole to achieve a damping and buffering effect, avoiding causing excessive damage to the workpiece at one time or exerting pressure on the abrasive belt 47 when the grinding feed amount of the grinding mechanism 4 is too large, but making it slowly approach the workpiece and perform a fine grinding action. The outer side of the pressing rod 94 is slidably connected to the empty shell 91 through an oil seal. A spring 10 is sleeved on the outer side of the pressing rod 94. The top and bottom of the spring 10 are respectively fixedly connected to the empty shell 91 and the fixed frame 41. By providing an oil seal to connect the empty shell 91 and the pressing rod 94, liquid leakage can be avoided when the pressing rod 94 moves. The provided spring 10 is used to push the structure to reset after the structure stops bearing force.

[0051] Working principle of this embodiment: During use, first install the metal workpiece outside the fixing member 3. Adjust the horizontal position of the grinding mechanism 4 through the cross rail and longitudinal rail of the electric guide rail 2 so that the sand belt 47 is aligned with the area to be processed. The externally connected drive motor drives the front roller 45 and the roller 46 to rotate, driving the sand belt 47 to grind the contact position of the workpiece. The debris generated by grinding is collected through the hopper at the bottom of the table 1. During the grinding process, if the sand belt 47 contacts the workpiece, the grinding mechanism 4 pushes the sliding piece 93 through the pressing rod 94. The sliding piece 93 slides in the housing 92 and pushes the liquid to flow through the flow hole, playing a damping and buffering role to prevent the feed rate from being too large. The spring 10 pushes the structure to reset after the force is stopped. When the sand belt 47 needs to be replaced, rotate the screw rod 43 to make the movable frame 44 approach the fixed frame 41. After the sand belt 47 is loosened from the roller 46, take it out and replace it. After replacement, reverse the screw rod 43, and the movable frame 44 moves away from the fixed frame 41 to tension the sand belt 47. The slide rod 5 cooperates with the fixed frame 41, and the slide bar 6 cooperates with the movable frame 44 to limit the horizontal movement of the movable frame 44 and prevent it from rotating or tilting.

[0052] Embodiment 2

[0053] Reference Figure 1-6 Moreover, a precision grinding device for processing metal parts and its usage method further include a fixing member 3. Among them, the fixing member 3 includes a fixing tube 31. A sliding sleeve 32 is slidably connected to the outside of the fixing tube 31. A connecting rod 33 is rotatably connected to the outside of the sliding sleeve 32. A outer frame 34 is fixedly connected to the right side of the outside of the fixing tube 31. A clamping rod 35 is rotatably connected to the inside of the outer frame 34. A friction sleeve 36 is rotatably connected to the outside of the right side of the clamping rod 35. The left side of the clamping rod 35 is rotatably connected to the connecting rod 33. A cooling fan is installed inside the fixing tube 31;

[0054] When fixing the workpiece through the fixing member 3, if it is a shaft-like part, it can be placed on the right side of the fixing tube 31 and slide along the fixing tube 31. The connected outer frame 34 will push and pull the clamping rod 35 to rotate along the outer frame 34, and contact the workpiece through the friction sleeve 36 and perform clamping to complete the fixing of the workpiece. When installing a pipe-like workpiece, the pipe-like workpiece can be sleeved outside multiple friction sleeves 36, and the sliding sleeve 32 is moved to make it away from the outer frame 34. At this time, the connecting rod 33 will pull the clamping rod 35 to rotate along the outer frame 34, so that multiple friction sleeves 36 are pushed outwards to quickly fix it from the inside of the pipe-like part, which is suitable for the processing of various different metal workpieces.

[0055] Among them, a guide frame 11 is fixedly connected to the top of the tabletop 1. A threaded rod 12 is rotatably connected to the inner side of the guide frame 11. The top of the guide frame 11 is externally connected to a control motor, and the output end of the control motor is fixedly connected to the threaded rod 12. A transmission block 13 is threadedly connected to the outer side of the threaded rod 12. The outer side of the transmission block 13 is slidably connected to the guide frame 11. A mating sleeve 14 is fixedly connected to the rear side of the transmission block 13. The inner side of the mating sleeve 14 is fixedly connected to the fixed pipe 31. By arranging the guide frame 11 to cooperate with the threaded rod 12, when the control motor drives the threaded rod 12 to rotate, the connected transmission block 13 and mating sleeve 14 will drive the entire fixing member 3 to move in the vertical direction, so as to adjust the grinding position of the workpiece. A control telescopic cylinder 15 is fixedly connected to the top of the mating sleeve 14. The telescopic end of the control telescopic cylinder 15 is fixedly connected to the sliding sleeve 32. By arranging the control telescopic cylinder 15, it is convenient to push and pull the sliding sleeve 32 to slide, so as to drive the clamping of the workpiece by the structure. A torsion spring 16 is fixedly connected to the outer side of the clamping rod 35. The side of the torsion spring 16 close to the friction sleeve 36 is fixedly connected to the friction sleeve 36. Two electric cylinders 17 are fixedly connected to the top of the tabletop 1. The telescopic end of the electric cylinder 17 is rotatably connected to a rotating shaft 18. The top of the right rotating shaft 18 is rotatably connected to the bottom of the electric guide rail 2. The top of the left rotating shaft 18 is fixedly connected to a guide block 19. The outer side of the guide block 19 is slidably connected to the bottom of the electric guide rail 2. By arranging the electric cylinder 17 to cooperate with the rotating shaft 18, when it is necessary to adjust the grinding angle of the grinding mechanism 4, the left electric cylinder 17 can be extended or shortened. At this time, the telescopic end of the left electric cylinder 17 pushes and pulls the entire electric guide rail 2 through the rotating shaft 18, so that it tilts along the top of the right electric cylinder 17. When moving, the guide block 19 slides inside the electric slide rail to avoid the structure from getting stuck.

[0056] Working principle of this embodiment: When in use, the control telescopic cylinder 15 is used to drive the sliding sleeve 32 to slide along the fixed pipe 31. If it is necessary to fix a shaft-like part, the sliding sleeve 32 slides outward, and the connecting rod 33 is used to push the clamping rod 35 to rotate around the outer frame 34, so that the friction sleeve 36 is tightened inward to clamp the shaft-like part; if it is necessary to fix a pipe-like part, the sliding sleeve 32 slides inward, the connecting rod 33 pulls the clamping rod 35 to rotate outward, and the friction sleeve 36 expands outward to clamp the inner wall of the pipe-like part. The torsion spring 16 ensures that the friction sleeve 36 is in flexible contact with the workpiece. The control motor is used to drive the threaded rod 12 in the guide frame 11 to rotate, and the transmission block 13 drives the mating sleeve 14 and the fixed pipe 31 to move in the vertical direction to adjust the grinding position of the workpiece. When it is necessary to adjust the grinding angle, the left electric cylinder 17 expands and contracts, and the electric guide rail 2 is tilted through the rotating shaft 18 and the guide block 19, driving the grinding mechanism 4 to adjust the angle to avoid the structure from getting stuck.

[0057] This specific embodiment is only an explanation of the present invention and is not a limitation thereof. After reading this specification, those skilled in the art can make modifications to this embodiment without creative contributions as needed. Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fine grinding device for hardware processing, comprising a tabletop (1), characterized in that: A fixing member (3) is provided on the top of the tabletop (1). An electric guide rail (2) is fixedly connected to the top of the tabletop (1). A grinding mechanism (4) is provided on the left side of the electric guide rail (2). A hopper is installed at the bottom of the tabletop (1). The grinding mechanism (4) includes a fixed frame (41) and a sand belt (47). A back frame (42) is fixedly connected to the right side of the bottom of the fixed frame (41). A lead screw (43) is threadedly connected to the inside of the fixed frame (41). A moving frame (44) is rotatably connected to the rear side of the lead screw (43). Rollers (45) are rotatably connected to the left side of the moving frame (44) and the inside of the back frame (42). Wheels (46) are installed on the outer sides of the rollers (45). The inside of the sand belt (47) is movably connected to the two wheels (46). A driving motor is externally connected to the right side of the back frame (42), and the output end of the driving motor is fixedly connected to the front roller (45). The fixing member (3) includes a fixing tube (31). A sliding sleeve (32) is slidably connected to the outer side of the fixing tube (31). A connecting rod (33) is rotatably connected to the outer side of the sliding sleeve (32). An outer frame (34) is fixedly connected to the right side of the outer side of the fixing tube (31). A clamping rod (35) is rotatably connected to the inside of the outer frame (34). A friction sleeve (36) is rotatably connected to the outer side of the right side of the clamping rod (35). The left side of the clamping rod (35) is rotatably connected to the connecting rod (33). A cooling fan is installed inside the fixing tube (31).

2. The fine grinding device for processing hardware parts according to claim 1, characterized in that: A sliding rod (5) is fixedly connected to the front side of the moving frame (44). The outer side of the sliding rod (5) is slidably connected to the fixed frame (41). A sliding strip (6) is provided at the rear side of the back frame (42). The outer side of the sliding strip (6) is slidably connected to the moving frame (44).

3. The fine grinding device for processing hardware parts according to claim 1, characterized in that: The electric guide rail (2) includes a horizontal guide rail and a vertical guide rail. The inside of the horizontal guide rail is installed through a slider and the vertical guide rail. A connecting seat (7) is fixedly connected to the inside of the vertical guide rail through a slider.

4. The fine grinding device for processing hardware parts according to claim 3, wherein: A rib plate (8) is fixedly connected to the outer side of the connecting seat (7). A pressing member (9) is fixedly connected to the bottom of the rib plate (8). The bottom of the pressing member (9) is fixedly connected to the fixed frame (41).

5. The fine grinding device for hardware processing according to claim 4, characterized in that: The pressing member (9) includes a hollow shell (91). The inside of the hollow shell (91) is filled with liquid. The top of the hollow shell (91) is fixedly connected to the rib plate (8). A sleeve shell (92) is fixedly connected to the inside of the hollow shell (91). Flow holes are formed at the top and bottom of the inside of the sleeve shell (92). A sliding piece (93) is slidably connected to the inside of the sleeve shell (92). A pressing rod (94) is fixedly connected to the bottom of the sliding piece (93). The bottom of the pressing rod (94) is fixedly connected to the fixed frame (41).

6. The fine grinding device for processing hardware parts according to claim 5, characterized in that: The outer side of the pressing rod (94) is slidably connected to the hollow shell (91) through an oil seal. A spring (10) is sleeved on the outer side of the pressing rod (94). The top and bottom of the spring (10) are respectively fixedly connected to the hollow shell (91) and the fixed frame (41).

7. The fine grinding device for hardware processing according to claim 1, wherein: A guide frame (11) is fixedly connected to the top of the tabletop (1). A threaded rod (12) is rotatably connected to the inside of the guide frame (11). The top of the guide frame (11) is externally connected to a control motor, and the output end of the control motor is fixedly connected to the threaded rod (12). A transmission block (13) is threadedly connected to the outside of the threaded rod (12). The outside of the transmission block (13) is slidably connected to the guide frame (11). A matching sleeve (14) is fixedly connected to the rear side of the transmission block (13). The inside of the matching sleeve (14) is fixedly connected to a fixed pipe (31).

8. A fine grinding device for processing hardware parts according to claim 7, characterized in that: A control telescopic cylinder (15) is fixedly connected to the top of the matching sleeve (14). The telescopic end of the control telescopic cylinder (15) is fixedly connected to a sliding sleeve (32).

9. An accurate grinding device for processing hardware parts according to claim 1, characterized in that: A torsion spring (16) is fixedly connected to the outside of the clamping rod (35). One side of the torsion spring (16) close to the friction sleeve (36) is fixedly connected to the friction sleeve (36). Two electric cylinders (17) are fixedly connected to the top of the tabletop (1). The telescopic end of the electric cylinder (17) is rotatably connected to a rotating shaft (18). The top of the right rotating shaft (18) is rotatably connected to the bottom of the electric guide rail (2). A guiding block (19) is fixedly connected to the top of the left rotating shaft (18). The outside of the guiding block (19) is slidably connected to the bottom of the electric guide rail (2).

10. A method for using a fine grinding device for processing hardware parts, characterized in that: Including the following steps: S1. Fix the structure according to the type of the processed metal workpiece. If it is for fixing shaft parts, place the shaft-type metal workpiece on the right side of the fixed pipe (31), start the control telescopic cylinder (15) to shorten, drive the sliding sleeve (32) to slide outward along the fixed pipe (31), and the sliding sleeve (32) pushes the clamping rod (35) to rotate around the outer frame (34) through the connecting rod (33), so that the friction sleeve (36) tightens inward to clamp the outside of the shaft part. When fixing pipe parts, sleeved the pipe-type metal workpiece on the outside of multiple friction sleeves (36), start the control telescopic cylinder (15) to extend, the sliding sleeve (32) slides inward, the connecting rod (33) pulls the clamping rod (35) to rotate outward, and the friction sleeve (36) expands and clamps the inner wall of the pipe part. If it is necessary to adjust the height of the fixing part (3), drive the threaded rod (12) to rotate through the control motor, and the transmission block (13) drives the matching sleeve (14) and the fixed pipe (31) to move up and down along the guide frame (11) to ensure the alignment of the workpiece and the grinding mechanism (4). S2. Control the movement of the connecting seat (7) through the horizontal and vertical guide rails of the electric guide rail (2), adjust the horizontal position of the grinding mechanism (4) to align the abrasive belt (47) with the area to be machined on the workpiece. Start the drive motor to drive the front roller (45) and the roller (46) to rotate, and the abrasive belt (47) moves accordingly. At the same time, turn on the cooling fan in the fixed pipe (31) to reduce the temperature rise during workpiece grinding. The grinding mechanism (4) is connected to the rib plate (8) through the pressing member (9). When the abrasive belt (47) contacts the workpiece, the pressing rod (94) pushes the sliding piece (93) upward, and the liquid in the housing (92) flows through the flow holes to provide damping buffering to avoid excessive feed. The spring (10) ensures uniform and stable grinding pressure. The electric guide rail (2) moves along the preset path to achieve fine grinding of the entire surface area of the workpiece. The chips generated during grinding are collected through the hopper at the bottom of the table (1); S3. If it is necessary to replace the abrasive belt (47), manually rotate the lead screw (43). The moving frame (44) moves closer to the fixed frame (41) along the sliding rod (5). After the abrasive belt (47) is loosened, it is taken out from the front side of the roller (46). After installing the new abrasive belt, reverse the lead screw (43), and the moving frame (44) moves away from the fixed frame (41). Guided by the slide bar (6), the abrasive belt (47) is tensioned. For grinding angle adjustment, according to the requirements of the workpiece curved surface, start the left side cylinder (17) to extend and retract, and adjust the tilt angle of the electric guide rail (2) through the rotating shaft (18) and the guide block (19) to make the grinding mechanism (4) form an appropriate angle with the workpiece surface.

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