Chamfering device for fastener production and chamfering method thereof

Abstract

The invention relates to the technical field of chamfering devices, in particular to a chamfering device for fastener production and a chamfering method thereof.The chamfering device comprises a fixing frame, an inner hexagon screw is arranged on the inner side of the fixing frame, a clamping structure is arranged outside the inner hexagon screw on the inner side of the fixing frame, and an air cylinder is installed on one side of the fixing frame; an output shaft of the air cylinder is fixedly connected with a mounting frame, a first motor is mounted on the inner side of the mounting frame, an output shaft of the first motor is fixedly connected with a polishing shaft, chamfering structures are arranged on the two sides of the mounting frame, each chamfering structure comprises a mounting sleeve, and a cleaning structure is arranged on the outer side of each mounting sleeve. According to the internal hexagonal screw chamfering device, the head position of an internal hexagonal screw can be chamfered through mutual cooperation of a first discharging pipe and a chamfering rod, an assembling hole of the internal hexagonal screw can be chamfered through mutual cooperation of a grinding shaft and a second flow guide groove, and fine burrs in the assembling hole are cleaned through the second flow guide groove.

Description

Technical Field

[0001] The present invention relates to the technical field of chamfering devices, and particularly to a chamfering device for fastener production and a chamfering method thereof. Background Art

[0002] Hexagon socket head cap screws, as a commonly used type of fastener, are widely used in various fields. Common fasteners include bolts, studs, screws, nuts, washers, pins, etc. In the production of fasteners, such as bolt production, screw production, and pin production, chamfering of fasteners is required.

[0003] During the processing of existing hexagon socket head cap screws, fine burrs will remain inside and outside the internal hexagon assembly hole. The existence of burrs will affect the use of the screws and greatly affect the assembly effect. When milling the chamfer, the high temperature generated by friction will cause the screws to deform. Metal particles generated after chamfering will remain in the assembly hole and outside of the screws, and the friction removes the oxide layer on the outside of the screws, resulting in the screws coming into contact with humid air and then rusting. For this reason, we propose a chamfering device for fastener production and a chamfering method thereof. Summary of the Invention

[0004] In order to make up for the deficiencies of the prior art and solve at least one of the technical problems proposed in the background art, the present invention proposes a chamfering device for fastener production and a chamfering method thereof.

[0005] The technical solution adopted by the present invention to solve its technical problems is: a chamfering device for fastener production, including a fixed frame. An internal hexagon socket head cap screw is arranged inside the fixed frame. A clamping structure is arranged outside the internal hexagon socket head cap screw inside the fixed frame. A cylinder is installed on one side of the fixed frame. The output shaft of the cylinder is fixedly connected to an installation frame. A first motor is installed inside the installation frame. The output shaft of the first motor is fixedly connected to a grinding shaft. Multiple groups of second diversion grooves are arranged on the outside of the grinding shaft. Chamfering structures are arranged on both sides of the installation frame. The chamfering structure includes an installation sleeve, and a cleaning structure is arranged on the outside of the installation sleeve.

[0006] Preferably, the chamfering structure includes two groups of first fixing rods fixedly connected to the mounting frame. The lower ends of the two groups of first fixing rods are fixedly connected to a fixing annular plate together. Chute grooves are provided at both the upper and lower ends of the fixing annular plate. A plurality of groups of first bumps are fixedly connected to the inner wall of the fixing annular plate. A second bump is slidably connected to the outer side of the first bump. The other side of the second bump is fixedly connected to a slider. The other side of the slider is slidably connected to the output shaft of a first electric telescopic rod. The housing of the first electric telescopic rod is fixedly connected to a mounting sleeve. The inner side of the mounting sleeve is fixedly connected to the output shaft of a first motor. A first spring is arranged inside the slider. One end of the first spring is fixedly connected to the slider, and the other end of the first spring is fixedly connected to the output shaft of the first electric telescopic rod.

[0007] Preferably, a fixing plate is fixedly connected to the lower end of the slider. A fuel tank is fixedly connected to one side of the fixing plate. The other side of the fuel tank is rotatably connected to the output shaft of the first motor through a sleeve. A fixing sleeve is fixedly connected to the inner side of the fuel tank. A second feed hole is provided on the outer side of the fixing sleeve. A first discharge pipe is rotatably connected to the inner side of the fixing sleeve. The first discharge pipe is of a hollow design. A first feed hole is provided at a position close to the upper end on the outer side of the first discharge pipe. A discharge hole is provided at a position close to the lower end on the outer side of the first discharge pipe. Blades are fixedly connected to the outer side of the first discharge pipe. A first gear is fixedly connected to the upper end of the first discharge pipe. A first synchronous belt is rotatably connected to the outer side of the first gear. The first synchronous belt has a certain elasticity. A second gear is rotatably connected to the inner side of the first synchronous belt. The inner side of the second gear is fixedly connected to the output shaft of the first motor.

[0008] Preferably, a C-shaped bracket is fixedly connected to the lower end of the fixing plate. Two groups of symmetric abrasive sheets are fixedly connected to both sides of the C-shaped bracket.

[0009] Preferably, a chamfering rod is rotatably connected to the inner side of the fixing plate through a rotating shaft. A plurality of groups of first diversion grooves are provided on the outer side of the chamfering rod. The upper end of the chamfering rod is fixedly connected to the first discharge pipe through a rotating shaft.

[0010] Preferably, the cleaning structure includes a second fixing rod fixedly connected to the mounting sleeve. The other end of the second fixing rod is fixedly connected to an air pump. Two groups of symmetric fixing blocks are fixedly connected to one side of the air pump. Spherical rollers are installed on the sides of the two groups of fixing blocks close to each other. The two groups of spherical rollers slide inside the two groups of chute grooves respectively.

[0011] Preferably, a fourth electric telescopic rod is installed at the lower end of the air pump. The output shaft of the fourth electric telescopic rod is fixedly connected with a mounting plate. A second motor is installed on one side of the mounting plate. A fourth gear is rotatably connected to the other side of the mounting plate. The output shaft of the second motor is fixedly connected with the fourth gear. A cleaning plate is fixedly connected to the other end of the fourth gear.

[0012] Preferably, a second synchronous belt is rotatably connected to the outside of the fourth gear. A third gear is rotatably connected to the inside of the second synchronous belt. One end of the third gear is rotatably connected to the mounting plate through a rotating shaft. A first cleaning brush roller is fixedly connected to the other end of the third gear. Exhaust holes are formed in the outside of the first cleaning brush roller. A sliding sleeve is rotatably connected to the outside of the first cleaning brush roller. A second cleaning brush roller is slidably connected to the inside of the sliding sleeve. Exhaust holes are formed in the outside of the second cleaning brush roller. A circular limiting plate is fixedly connected to the outside of the second cleaning brush roller. An exhaust hose is fixedly connected to the outside of the sliding sleeve. The exhaust hose penetrates through the mounting plate on the outside. The other end of the exhaust hose is fixedly connected to the output port of the air pump. A third electric telescopic rod is installed inside the first cleaning brush roller. The output shaft of the third electric telescopic rod is fixedly connected with the second cleaning brush roller.

[0013] Preferably, the clamping structure includes two groups of second electric telescopic rods installed on the fixed frame. The output shafts of the two groups of second electric telescopic rods are jointly fixedly connected with an annular top plate. A rubber pad is fixedly connected to the upper end of the annular top plate. A third spring is jointly arranged on the outside of the two groups of second electric telescopic rods. One end of the third spring is fixedly connected with the annular top plate. The other end of the third spring is fixedly connected with the fixed frame.

[0014] A method for using a chamfering device for fastener production, applicable to a chamfering device for fastener production in the above, includes the following steps: S1. Install the hexagon socket head cap screw inside the fixed frame. Start the second electric telescopic rod so that the output shaft drives the rubber pad to fit against the outside of the hexagon socket head cap screw through the annular top plate, fixing the position of the hexagon socket head cap screw and preventing deflection. S2. The air cylinder drives the first motor to move downward. The first motor drives the grinding shaft to rotate and chamfer the upper assembly hole of the hexagon socket head cap screw. The output shaft of the first motor drives the second gear to rotate. The second gear drives the first gear to rotate through the first synchronous belt. The first gear drives the chamfering rod to rotate, so as to chamfer the periphery of the head of the hexagon socket head cap screw. S3. After the chamfering is completed, start the second motor. Drive the fourth gear through the output shaft of the second motor, so that the fourth gear drives the cleaning plate at the other end to clean the particles contaminated at the lower end position of the head of the hexagon socket screw. The fourth gear drives the third gear to rotate through the second synchronous belt, and the third gear drives the first cleaning brush to rotate. The first cleaning brush drives the second cleaning brush to rotate through the sliding sleeve, so as to clean the upper end position of the head of the hexagon socket screw by the first cleaning brush, and clean the inside of the assembly hole at the upper end of the hexagon socket screw by the second cleaning brush.

[0015] Compared with the prior art, the present invention provides a chamfering device and a chamfering method for fastener production, having the following beneficial effects: 1. Through the mutual cooperation of the first discharge pipe and the chamfering rod, the chamfering treatment can be carried out on the head position of the hexagon socket screw. Through the mutual cooperation of the grinding shaft and the second diversion groove, the chamfering treatment can be carried out on the assembly hole of the hexagon socket screw, and the second diversion groove is used to clean the fine burrs inside the assembly hole. The end of the chamfered screw forms an inclined surface, which can be more easily aligned and screwed into the threaded hole, reducing the resistance during installation. The chamfering treatment not only improves the convenience and efficiency of installation, but also enhances the strength, durability and aesthetics of the screw, while reducing the risk of damage during installation and use.

[0016] 2. Through the mutual cooperation of the first discharge pipe and the fixed sleeve, the first discharge pipe can output lubricating oil outward through the discharge holes when rotating, and through the centrifugal force during rotation, the outer sides of the chamfering rod and the grinding shaft are both adhered with lubricating oil. The lubricating oil can reduce the friction between the chamfering rod, the grinding shaft and the hexagon socket screw, thereby reducing the heat generated during the processing, preventing the tool and the workpiece from overheating. The lubricating oil helps to obtain a smoother processing surface, reduce burrs and roughness, improve the quality of chamfering, significantly improve the processing quality, efficiency and tool life, while reducing the damage of the workpiece and the tool.

[0017] 3. Through the mutual cooperation of the fourth gear and the cleaning plate, the cleaning plate can clean the lower area after chamfering. Through the mutual cooperation of the third gear and the third electric telescopic rod, the inside of the assembly hole of the hexagon socket screw and the upper chamfering area can be cleaned, so that the outside of the hexagon socket screw remains clean. Through the mutual cooperation of the exhaust hose and the sliding sleeve, air flow can be output to the chamfering area, so that the friction residual particles fall off, and the chamfered hexagon socket screw can be cooled, thereby improving the processing quality. Description of the Drawings

[0018] Figure 1 It is a schematic diagram of the overall structure of a chamfering device for fastener production proposed by the present invention; Figure 2 It is an enlarged schematic diagram of the overall structure of the chamfering structure and the cleaning structure of a chamfering device for fastener production proposed by the present invention; Figure 3 A sectional view of the overall structure of the chamfering structure of a chamfering device for fastener production proposed by the present invention; Figure 4 A chamfering device for fastener production proposed by the present invention Figure 3 An enlarged view of the structure of part A in the device; Figure 5 A chamfering device for fastener production proposed by the present invention Figure 3 An enlarged view of the structure of part B in the device; Figure 6 A sectional view of the overall structure of the cleaning structure of a chamfering device for fastener production proposed by the present invention; Figure 7 A sectional view of a partial structure of the cleaning structure of a chamfering device for fastener production proposed by the present invention; Figure 8 A schematic diagram of the overall structure of the clamping structure of a chamfering device for fastener production proposed by the present invention.

[0019] In the figure: 1, fixed frame; 2, cylinder; 3, mounting frame; 4, first motor; 5, grinding shaft; 6, chamfering structure; 61, first fixing rod; 62, fixed annular plate; 63, first convex block; 64, chute; 65, mounting sleeve; 66, first electric telescopic rod; 67, slider; 68, second convex block; 69, first spring; 610, fixing plate; 611, fuel tank; 612, first discharge pipe; 613, first feed hole; 614, first gear; 615, first synchronous belt; 616, second gear; 617, fixed sleeve; 618, second feed hole; 619, blade; 620, discharge hole; 621, chamfering rod; 622, first diversion groove; 623, C-shaped bracket; 624, abrasive sheet; 7, hexagon socket head screw; 8, clamping structure; 81, second electric telescopic rod; 82, annular top plate; 83, rubber pad; 84, third spring; 9, cleaning structure; 91, second fixing rod; 92, air pump; 93, fixing block; 94, spherical roller; 95, mounting plate; 96, third gear; 97, first cleaning brush; 98, sliding sleeve; 99, exhaust hose; 910, second cleaning brush; 911, second synchronous belt; 912, fourth gear; 913, second motor; 914, third electric telescopic rod; 915, cleaning plate; 916, fourth electric telescopic rod; 10, second diversion groove. Detailed implementation manners

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0021] Please refer to Figure 1 - Figure 8, A chamfering device for fastener production, including a fixed frame 1. An inner hexagon screw 7 is arranged inside the fixed frame 1. A clamping structure 8 is arranged outside the inner hexagon screw 7 inside the fixed frame 1. A cylinder 2 is installed on one side of the fixed frame 1. The output shaft of the cylinder 2 is fixedly connected with an installation frame 3. A first motor 4 is installed inside the installation frame 3. The output shaft of the first motor 4 is fixedly connected with a grinding shaft 5. Multiple groups of second diversion grooves 10 are arranged on the outer side of the grinding shaft 5. Chamfering structures 6 are arranged on both sides of the installation frame 3. The chamfering structure 6 includes an installation sleeve 65, and a cleaning structure 9 is arranged outside the installation sleeve 65.

[0022] In this embodiment, the chamfering structure 6 includes two groups of first fixing rods 61 fixedly connected with the installation frame 3. The lower ends of the two groups of first fixing rods 61 are jointly fixedly connected with a fixed annular plate 62. Sliding grooves 64 are arranged at both the upper and lower ends of the fixed annular plate 62. Multiple groups of first convex blocks 63 are fixedly connected to the inner wall of the fixed annular plate 62. A second convex block 68 is slidably connected to the outer side of the first convex block 63. The other side of the second convex block 68 is fixedly connected with a slider 67. The other side of the slider 67 is slidably connected to the output shaft of a first electric telescopic rod 66. The housing of the first electric telescopic rod 66 is fixedly connected with an installation sleeve 65. The inner side of the installation sleeve 65 is fixedly connected with the output shaft of the first motor 4. A first spring 69 is arranged inside the slider 67. One end of the first spring 69 is fixedly connected with the slider 67, and the other end of the first spring 69; is fixedly connected with the output shaft of the first electric telescopic rod 66.

[0023] Specifically, the first fixing rod 61 is used for the connection between the fixed annular plate 62 and the installation frame 3. The sliding groove 64 is used for the sliding of the spherical roller 94 to keep the cleaning structure 9 balanced. The output shaft of the first motor 4 drives the first electric telescopic rod 66 to rotate through the installation sleeve 65. The first electric telescopic rod 66 drives the slider 67 to rotate through the output shaft. The slider 67 drives the fuel tank 611 to rotate inside the fixed annular plate 62 through the fixing plate 610. When the second convex block 68 rotates following the slider 67, the second convex block 68 will contact the first convex block 63, and the slider 67 will slide to the other side through the protrusion of the first convex block 63, and then reset again through the tension of the first spring 69. Thus, the C-shaped bracket 623 is slightly shaken through the mutual cooperation between the second convex block 68 and the first convex block 63. Without affecting the transmission of the first electric telescopic rod 66, the abrasive sheet 624 rubs the chamfered areas at the upper and lower ends of the head of the inner hexagon screw 7.

[0024] In this embodiment, a fixing plate 610 is fixedly connected to the lower end of the slider 67. A fuel tank 611 is fixedly connected to one side of the fixing plate 610. The other side of the fuel tank 611 is rotationally connected to the output shaft of the first motor 4 through a sleeve. A fixed sleeve 617 is fixedly connected to the inner side of the fuel tank 611. A second feed hole 618 is formed in the outer side of the fixed sleeve 617. A first discharge pipe 612 is rotationally connected to the inner side of the fixed sleeve 617. The first discharge pipe 612 is of a hollow design. A first feed hole 613 is formed in the outer side of the first discharge pipe 612 near the upper end. A discharge hole 620 is formed in the outer side of the first discharge pipe 612 near the lower end. A blade 619 is fixedly connected to the outer side of the first discharge pipe 612. A first gear 614 is fixedly connected to the upper end of the first discharge pipe 612. A first synchronous belt 615 is rotationally connected to the outer side of the first gear 614. The first synchronous belt 615 has a certain elasticity. A second gear 616 is rotationally connected to the inner side of the first synchronous belt 615. The inner side of the second gear 616 is fixedly connected to the output shaft of the first motor 4.

[0025] Specifically, the fixing plate 610 is used to install the fuel tank 611. The fuel tank 611 is rotationally connected to the output shaft of the first motor 4 through a sleeve to keep itself balanced. The fixed sleeve 617 can control the feeding and closing of the first discharge pipe 612 when the first discharge pipe 612 rotates. The hollow design of the first discharge pipe 612 allows the lubricating oil to be output. It can also be connected to the first gear 614 as a rotating shaft. When the second gear 616 rotates following the first motor 4, the first gear 614 is driven to rotate through the first synchronous belt 615, so that the first feed hole 613 on the outer side of the first discharge pipe 612 coincides with the second feed hole 618, allowing the lubricating oil to flow into the first discharge pipe 612 and then flow out through the discharge hole 620. The blade 619 rotates following the first discharge pipe 612 to stir the lubricating oil in the fuel tank 611.

[0026] In this embodiment, a C-shaped bracket 623 is fixedly connected to the lower end of the fixing plate 610. Two groups of symmetrically arranged abrasive sheets 624 are fixedly connected to both sides of the C-shaped bracket 623.

[0027] Specifically, when the C-shaped bracket 623 rotates following the fixing plate 610, the chamfered area of the head of the hexagon socket screw 7 is processed by using the abrasive sheet 624.

[0028] In this embodiment, a chamfering rod 621 is rotationally connected to the inner side of the fixing plate 610 through a rotating shaft. A plurality of groups of first diversion grooves 622 are formed in the outer side of the chamfering rod 621. The upper end of the chamfering rod 621 is fixedly connected to the first discharge pipe 612 through a rotating shaft.

[0029] Specifically, when the first discharge pipe 612 rotates, it drives the chamfering rod 621 to rotate, thereby chamfering the head of the hexagon socket screw 7.

[0030] In this embodiment, the cleaning structure 9 includes a second fixing rod 91 fixedly connected to the mounting sleeve 65. The other end of the second fixing rod 91 is fixedly connected to an air pump 92. One side of the air pump 92 is fixedly connected with two groups of symmetric fixing blocks 93. Spherical rollers 94 are installed on the closer sides of the two groups of fixing blocks 93. The two spherical rollers 94 slide inside the two chutes 64 respectively.

[0031] Specifically, when the first motor 4 rotates, it drives the second fixing rod 91 to rotate through the mounting sleeve 65. The second fixing rod 91 drives the air pump 92 to move. The air pump 92 drives the spherical rollers 94 to slide inside the chutes 64 through the fixing blocks 93, so that the cleaning structure 9 maintains balance when rotating and reduces the friction force.

[0032] In this embodiment, a fourth electric telescopic rod 916 is installed at the lower end of the air pump 92. The output shaft of the fourth electric telescopic rod 916 is fixedly connected to a mounting plate 95. A second motor 913 is installed on one side of the mounting plate 95. The other side of the mounting plate 95 is rotatably connected to a fourth gear 912. The output shaft of the second motor 913 is fixedly connected to the fourth gear 912. The other end of the fourth gear 912 is fixedly connected to a cleaning plate 915.

[0033] Specifically, after the cylinder 2 drives the chamfering structure 6 to reset upward, the fourth electric telescopic rod 916 is started to drive the mounting plate 95 to move downward. The second motor 913 is started. The second motor 913 drives the fourth gear 912 to rotate. The other end of the fourth gear 912 cleans the chamfering area below the socket head cap screw 7 through the cleaning plate 915.

[0034] In this embodiment, a second synchronous belt 911 is rotatably connected to the outside of the fourth gear 912. A third gear 96 is rotatably connected to the inside of the second synchronous belt 911. One end of the third gear 96 is rotatably connected to the mounting plate 95 through a rotating shaft. The other end of the third gear 96 is fixedly connected to a first cleaning brush 97. Exhaust holes are formed on the outside of the first cleaning brush 97. A sliding sleeve 98 is rotatably connected to the outside of the first cleaning brush 97. A second cleaning brush 910 is slidably connected to the inside of the sliding sleeve 98. Exhaust holes are formed on the outside of the second cleaning brush 910. A circular limiting plate is fixedly connected to the outside of the second cleaning brush 910. An exhaust hose 99 is fixedly connected to the outside of the sliding sleeve 98. The outside of the exhaust hose 99 penetrates through the mounting plate 95. The other end of the exhaust hose 99 is fixedly connected to the output port of the air pump 92. A third electric telescopic rod 914 is installed inside the first cleaning brush 97. The output shaft of the third electric telescopic rod 914 is fixedly connected to the second cleaning brush 910.

[0035] Specifically, the fourth gear 912 drives the third gear 96 through the second synchronous belt 911. The third gear 96 drives the first cleaning brush 97 to rotate. The first cleaning brush 97 drives the second cleaning brush 910 to rotate through the third electric telescopic rod 914. The air pump 92 is started. The air outlet of the air pump 92 outputs air flow into the sliding sleeve 98 through the exhaust hose 99. The air flow is conveyed to the first cleaning brush 97 and the second cleaning brush 910 through the sliding sleeve 98. When the second cleaning brush 910 rotates, it cleans the debris in the assembly hole of the hexagon socket head cap screw 7, and then uses the air flow to discharge the internal debris outward, so as to keep the assembly hole clean. When the first cleaning brush 97 rotates, it cleans the chamfered area above the head of the hexagon socket head cap screw 7, and uses the air flow to clean the external debris, keeps the outside of the hexagon socket head cap screw 7 clean, and evenly applies lubricating oil.

[0036] In this embodiment, the clamping structure 8 includes two groups of second electric telescopic rods 81 installed on the fixed frame 1. The output shafts of the two groups of second electric telescopic rods 81 are fixedly connected together with an annular top plate 82. A rubber pad 83 is fixedly connected to the upper end of the annular top plate 82. A third spring 84 is arranged outside the two groups of second electric telescopic rods 81. One end of the third spring 84 is fixedly connected to the annular top plate 82, and the other end of the third spring 84 is fixedly connected to the fixed frame 1.

[0037] Specifically, the hexagon socket head cap screw 7 is installed on the inner side of the fixed frame 1 through its own thread. Then the second electric telescopic rod 81 is started. The output shaft of the second electric telescopic rod 81 drives the annular top plate 82 to move upward, so that the rubber pad 83 is closely attached to the lower end of the head of the hexagon socket head cap screw 7. The tension of the third spring 84 stabilizes the position of the hexagon socket head cap screw 7 to prevent deviation.

[0038] A method for using a chamfering device for fastener production, applicable to a chamfering device for fastener production in the above, includes the following steps: S1. Install the hexagon socket head cap screw 7 on the inner side of the fixed frame 1. Start the second electric telescopic rod 81 so that the output shaft drives the rubber pad 83 to fit the outside of the hexagon socket head cap screw 7 through the annular top plate 82, and fix the position of the hexagon socket head cap screw 7 to prevent deflection. S2. The air cylinder 2 drives the first motor 4 to move downward. The first motor 4 drives the grinding shaft 5 to rotate and chamfer the upper assembly hole of the hexagon socket head cap screw 7. The output shaft of the first motor 4 drives the second gear 616 to rotate. The second gear 616 drives the first gear 614 to rotate through the first synchronous belt 615. The first gear 614 drives the chamfering rod 621 to rotate, so that the chamfering rod 621 chamfers the periphery of the head of the hexagon socket head cap screw 7. S3. After the chamfering is completed, start the second motor 913. Drive the fourth gear 912 through the output shaft of the second motor 913, so that the fourth gear 912 uses the cleaning plate 915 at the other end to clean the particles adhering to the lower end position of the head of the hexagon socket screw 7. The fourth gear 912 drives the third gear 96 to rotate through the second synchronous belt 911, and the third gear 96 drives the first cleaning brush 97 to rotate. The first cleaning brush 97 drives the second cleaning brush 910 to rotate through the sliding sleeve 98, so as to clean the upper end position of the head of the hexagon socket screw 7 by the first cleaning brush 97 and clean the inside of the assembly hole at the upper end of the hexagon socket screw 7 by the second cleaning brush 910.

[0039] Working principle: When in use, the hexagon socket head screw 7 is installed on the inner side of the fixed frame 1 through its own thread. Then, the second electric telescopic rod 81 is started, and the output shaft of the second electric telescopic rod 81 drives the annular top plate 82 to move upward, so that the rubber pad 83 is tightly attached to the lower end of the head of the hexagon socket head screw 7. The tension of the third spring 84 stabilizes the position of the hexagon socket head screw 7 to prevent deviation. After the hexagon socket head screw 7 is installed, the cylinder 2 is started, and the output shaft of the cylinder 2 drives the first motor 4 installed on the inner side of the installation frame 3 to move downward, and drives other structures of the chamfering structure 6 and the cleaning structure 9 to move downward through the installation frame 3 and the first fixing rod 61. The output shaft of the first motor 4 drives the grinding shaft 5 to fit the assembly hole at the upper end of the hexagon socket head screw 7. The first electric telescopic rod 66 is started, and the output shaft of the first electric telescopic rod 66 drives the slider 67 to extend to one side so that the second convex block 68 fits the first convex block 63. When the slider 67 moves, it drives the C-shaped bracket 623 to move, and the C-shaped bracket 623 moves to fit the two grinding sheets 624 to the upper and lower ends of the head of the hexagon socket head screw 7. The first motor 4 is started, and the output shaft of the first motor 4 drives the grinding shaft 5 to chamfer the assembly hole at the upper end of the hexagon socket head screw 7. The output shaft of the first motor 4 drives the first electric telescopic rod 66 to rotate through the installation sleeve 65. The first electric telescopic rod 66 drives the slider 67 to rotate through the output shaft. The slider 67 drives the fuel tank 611 to rotate inside the fixed annular plate 62 through the fixing plate 610. The output shaft of the first motor 4 drives the second gear 616 to rotate. The second gear 616 drives the first gear 614 to rotate through the first synchronous belt 615. The first gear 614 drives the first discharge pipe 612 to rotate. The first discharge pipe 612 drives the chamfering rod 621 to chamfer the position of the included angle at the upper and lower ends of the head of the hexagon socket head screw 7. The first discharge pipe 612 drives the blade 619 to stir the lubricating oil in the fuel tank 611 to prevent sedimentation. When the first discharge pipe 612 rotates, it aligns the first feed hole 613 with the second feed hole 618 on the outer side of the fixed sleeve 617 according to the rotation frequency, so that the lubricating oil passes through the blade 619 and the first feed hole 613 and enters the inner side of the first discharge pipe 612, and then flows out through the discharge hole 620 and is guided along the first diversion groove 622 for lubrication during the rotation of the chamfering rod 621. When the second convex block 68 rotates with the slider 67, the second convex block 68 will contact the first convex block 63, and the protrusion of the first convex block 63 causes the slider 67 to slide to the other side, and then returns to its original position through the tension of the first spring 69. Thus, the C-shaped bracket 623 generates slight shaking through the mutual cooperation between the second convex block 68 and the first convex block 63. Without affecting the transmission of the first electric telescopic rod 66, the grinding sheets 624 rub the chamfered areas at the upper and lower ends of the head of the hexagon socket head screw 7 to make the friction areas smoother. When the chamfering rod 621 rotates, part of the lubricating oil is thrown out by centrifugal force to lubricate the chamfered area and the outer side of the grinding shaft 5. The lubricating oil flows downward through the second diversion groove 10 to isolate the chamfered area from the air.Avoid rusting in the chamfered area of the hexagon socket head screw 7 after cleaning the oxide layer; After the chamfering is completed, start the first electric telescopic rod 66 to stagger the C-shaped bracket 623 from the hexagon socket head screw 7, then start the cylinder 2 to lift the mounting frame 3 upward to stagger it from the hexagon socket head screw 7. Start the fourth electric telescopic rod 916, and the output shaft of the fourth electric telescopic rod 916 drives the mounting plate 95 to move downward. At the same time, start the third electric telescopic rod 914, and the output shaft of the third electric telescopic rod 914 drives the second cleaning brush 910 to slide outward. The third electric telescopic rod 914 limits the movement range of the third electric telescopic rod 914 through a limit plate at one end, so that the outer side of the third electric telescopic rod 914 fits the inner wall of the assembly hole of the hexagon socket head screw 7, and the outer side of the first cleaning brush 97 fits the outer wall of the head of the hexagon socket head screw 7. Start the first motor 4 again, and the output shaft of the first motor 4 drives the second fixed rod 91 to rotate through the mounting sleeve 65. The second fixed rod 91 drives the air pump 92 to rotate. The air pump 92 drives the spherical roller 94 to slide in the chute 64 through the fixed block 93, reducing the friction generated during movement and keeping the cleaning structure 9 balanced. Start the second motor 913, and the second motor 913 drives the fourth gear 912 to rotate. The other end of the fourth gear 912 cleans the chamfered area below the hexagon socket head screw 7 through the cleaning plate 915. The fourth gear 912 drives the third gear 96 to rotate through the second synchronous belt 911. The third gear 96 drives the first cleaning brush 97 to rotate. The first cleaning brush 97 drives the second cleaning brush 910 to rotate through the third electric telescopic rod 914. Start the air pump 92, and the air outlet of the air pump 92 outputs air flow into the sliding sleeve 98 through the exhaust hose 99. The air flow is transported to the first cleaning brush 97 and the second cleaning brush 910 through the sliding sleeve 98. When the second cleaning brush 910 rotates, it cleans the debris in the assembly hole of the hexagon socket head screw 7, and then uses the air flow to discharge the internal debris outward, thereby keeping the assembly hole clean. When the first cleaning brush 97 rotates, it cleans the chamfered area above the head of the hexagon socket head screw 7 and uses the air flow to clean the outer debris, keeping the outside of the hexagon socket head screw 7 clean and evenly applying lubricating oil.

[0040] 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 chamfering device for fastener production, comprising a fixed frame (1), characterized in that: A hexagon socket screw (7) is arranged on the inner side of the fixed frame (1), and a clamping structure (8) is arranged on the outer side of the hexagon socket screw (7) on the inner side of the fixed frame (1). A cylinder (2) is installed on one side of the fixed frame (1), and the output shaft of the cylinder (2) is fixedly connected to the mounting frame (3). A first motor (4) is installed on the inner side of the mounting frame (3), and the output shaft of the first motor (4) is fixedly connected to a grinding shaft (5). A plurality of groups of second guide grooves (10) are arranged on the outer side of the grinding shaft (5). Chamfering structures (6) are arranged on both sides of the mounting frame (3), and the chamfering structures (6) include a mounting sleeve (65). A cleaning structure (9) is arranged on the outer side of the mounting sleeve (65).

2. A chamfering device for fastener production according to claim 1, characterized in that: The chamfering structure (6) comprises two groups of first fixing rods (61) fixedly connected to the mounting frame (3); the lower ends of the two groups of first fixing rods (61) are commonly fixedly connected to a fixing annular plate (62); upper and lower ends of the fixing annular plate (62) are provided with sliding grooves (64); the inner wall of the fixing annular plate (62) is fixedly connected to a plurality of groups of first protrusions (63); the outer side of the first protrusion (63) is slidably connected to a second protrusion (68); and the other side of the second protrusion (68) is fixedly connected to a sliding block (67). The other side of the slider (67) is slidably connected to the output shaft of the first electric telescopic rod (66); the outer shell of the first electric telescopic rod (66) is fixedly connected to a mounting sleeve (65); the inner side of the mounting sleeve (65) is fixedly connected to the output shaft of the first motor (4); a first spring (69) is provided on the inner side of the slider (67); one end of the first spring (69) is fixedly connected to the slider (67); the other end of the first spring (69) is fixedly connected to the output shaft of the first electric telescopic rod (66).

3. A chamfering device for fastener production according to claim 2, characterized in that: The lower end of the slider (67) is fixedly connected to a fixing plate (610), one side of the fixing plate (610) is fixedly connected to an oil tank (611), the other side of the oil tank (611) is rotatably connected to the output shaft of the first motor (4) via a sleeve, the inner side of the oil tank (611) is fixedly connected to a fixing sleeve (617), the outer side of the fixing sleeve (617) is provided with a second feed hole (618), the inner side of the fixing sleeve (617) is rotatably connected to a first discharge pipe (612), the first discharge pipe (612) is of hollow design, and the outer side of the first discharge pipe (612) is provided with a second feed hole (618) near the upper end. A feeding hole (613), a discharge hole (620) is provided on the outer side of the first discharge pipe (612) near the lower end, a blade (619) is fixedly connected to the outer side of the first discharge pipe (612), a first gear (614) is fixedly connected to the upper end of the first discharge pipe (612), the outer side of the first gear (614) is rotatably connected to a first synchronous belt (615), the first synchronous belt (615) has a certain degree of elasticity, the inner side of the first synchronous belt (615) is rotatably connected to a second gear (616), and the inner side of the second gear (616) is fixedly connected to the output shaft of the first motor (4).

4. A chamfering device for fastener production according to claim 3, characterized in that: A C-shaped bracket (623) is fixedly connected to the lower end of the fixed plate (610), and two groups of symmetrical frosting sheets (624) are fixedly connected to both sides of the C-shaped bracket (623).

5. A chamfering device for fastener production according to claim 3, characterized in that: The inner side of the fixed plate (610) is rotatably connected to a chamfered rod (621) via a rotating shaft, a plurality of first guide grooves (622) are provided on the outer side of the chamfered rod (621), and the upper end of the chamfered rod (621) is fixedly connected to the first discharge pipe (612) via a rotating shaft.

6. A chamfering device for fastener production according to claim 1, characterized in that: The cleaning structure (9) comprises a second fixing rod (91) fixedly connected to the mounting sleeve (65); the other end of the second fixing rod (91) is fixedly connected to an air pump (92); one side of the air pump (92) is fixedly connected to two groups of symmetrical fixing blocks (93); spherical rollers (94) are installed on the adjacent sides of the two groups of fixing blocks (93); the two groups of spherical rollers (94) slide on the inner sides of the two groups of sliding grooves (64) respectively.

7. A chamfering device for fastener production according to claim 6, characterized in that: A fourth electric telescopic rod (916) is mounted at the lower end of the air pump (92); an output shaft of the fourth electric telescopic rod (916) is fixedly connected to a mounting plate (95); a second motor (913) is mounted on one side of the mounting plate (95); a fourth gear (912) is rotatably connected to the other side of the mounting plate (95); an output shaft of the second motor (913) is fixedly connected to the fourth gear (912); and a cleaning plate (915) is fixedly connected to the other end of the fourth gear (912).

8. A chamfering device for fastener production according to claim 7, characterized in that: The outer side of the fourth gear (912) is rotatably connected to the second synchronous belt (911), the inner side of the second synchronous belt (911) is rotatably connected to the third gear (96), one end of the third gear (96) is rotatably connected to the mounting plate (95) via a rotating shaft, the other end of the third gear (96) is fixedly connected to the first cleaning roller brush (97), the outer side of the first cleaning roller brush (97) is provided with an exhaust hole, the outer side of the first cleaning roller brush (97) is rotatably connected to the sliding sleeve (98), and the inner side of the sliding sleeve (98) is slidably connected to the second cleaning roller brush (910). ), an exhaust hole is provided on the outer side of the second cleaning roller brush (910), a circular limit plate is fixedly connected to the outer side of the second cleaning roller brush (910), an exhaust hose (99) is fixedly connected to the outer side of the sliding sleeve (98), the outer side of the exhaust hose (99) passes through the mounting plate (95), the other end of the exhaust hose (99) is fixedly connected to the output port of the air pump (92), and a third electric telescopic rod (914) is installed on the inner side of the first cleaning roller brush (97), and the output shaft of the third electric telescopic rod (914) is fixedly connected to the second cleaning roller brush (910).

9. A chamfering device for fastener production according to claim 1, characterized in that: The clamping structure (8) comprises two groups of second electric telescopic rods (81) mounted on a fixed frame (1); the output shafts of the two groups of second electric telescopic rods (81) are commonly fixedly connected to an annular top plate (82); the upper end of the annular top plate (82) is fixedly connected to a rubber pad (83); and the outer sides of the two groups of second electric telescopic rods (81) are commonly provided with a third spring (84); one end of the third spring (84) is fixedly connected to the annular top plate (82); and the other end of the third spring (84) is fixedly connected to the fixed frame (1).

10. A method for using a chamfering device for fastener production, applicable to a chamfering device for fastener production according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1, installing the hexagon socket screw (7) on the inner side of the fixed frame (1), starting the second electric telescopic rod (81) so that the output shaft drives the rubber pad (83) to fit the outer side of the hexagon socket screw (7) through the annular top plate (82), so that the position of the hexagon socket screw (7) is fixed to prevent deflection; S2, the cylinder (2) drives the first motor (4) to move downward, the first motor (4) drives the grinding shaft (5) to rotate and chamfer the upper assembly hole of the hexagon socket screw (7), the output shaft of the first motor (4) drives the second gear (616) to rotate, the second gear (616) drives the first gear (614) to rotate through the first synchronous belt (615), the first gear (614) drives the chamfering rod (621) to rotate, so that the chamfering rod (621) performs chamfering on the periphery of the head of the hexagon socket screw (7); S3, after the chamfering is completed, the second motor (913) is started, and the fourth gear (912) is driven by the output shaft of the second motor (913), so that the fourth gear (912) cleans the contaminated particles at the lower end of the head of the hexagon socket screw (7) through the cleaning plate (915) at the other end, and the fourth gear (912) drives the third gear (96) to rotate through the second synchronous belt (911), and the third gear (96) drives the first cleaning roller brush (97) to rotate, and the first cleaning roller brush (97) drives the second cleaning roller brush (910) to rotate through the sliding sleeve (98), so that the first cleaning roller brush (97) cleans the upper end of the head of the hexagon socket screw (7), and the second cleaning roller brush (910) cleans the inside of the assembly hole at the upper end of the hexagon socket screw (7).

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