A device for chamfering the end of a bolt

Abstract

This utility model discloses a bolt end chamfering device, including a machine base, a bracket at the upper end of the machine base, a support plate at the middle of the upper end of the machine base, a fixed support bar at the rear end of the support plate, symmetrical guide rods fixedly connected between the front and rear inner walls of the support plate, movable support bars slidably connected between the guide rods, a grinding machine at the rear side of the upper end of the machine base, and a flattening mechanism. The flattening mechanism includes a guide rod, a push bar, a U-shaped seat, a connecting rod, a slider, and a U-shaped block. A support frame is provided at the rear side of the upper end of the machine base, guide rods are slidably connected inside the sliding holes at the left and right ends of the support frame, push bars are fixedly connected between the front ends of the guide rods, and symmetrical sliders are slidably connected inside the upper end of the support frame. This bolt end chamfering device can neatly arrange bolts during bolt conveying, avoid inaccuracies in subsequent clamping, and improve the chamfering quality of the bolts.

Description

Technical Field

[0001] This utility model relates to the field of bolt processing technology, specifically to a bolt end chamfering device. Background Technology

[0002] A bolt is a fastener consisting of a head and a threaded shank, mainly used in machinery manufacturing, construction engineering and other fields. Its core function is to connect and fix parts with through holes by cooperating with a nut, and to anchor the connected parts to a concrete substrate. Bolt processing is the process of making standard or non-standard bolts from metal materials through a series of processes, involving the coordination of various processes and equipment. In bolt processing, an end chamfering device is a device or tool used to cut a tapered or arc-shaped chamfer at the end of the bolt shank or threaded end. The main purpose of chamfering is to facilitate bolt assembly, improve appearance quality, and conform to standards.

[0003] In existing bolt processing end chamfering devices, when chamfering threads, a chain conveyor belt usually moves the workpiece, then a push cylinder sends the workpiece into the positioning station, then a V-block ensures that the workpiece axis is coaxial with the tool rotation center, then the workpiece enters the pneumatic gripper to hold the workpiece, and then the axis servo motor drives the movement of the tool in various positions and the chamfering drive.

[0004] Existing end-beveling devices for bolt processing have the following problems: when beveling bolts, the bolts may be misplaced during transport, which will affect the accuracy of subsequent clamping and the quality of bolt beveling. To address this, we propose an end-beveling device for bolt processing. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the existing defects and provide a bolt end chamfering device. When chamfering a bolt, the bolt is neatly arranged during bolt transportation to avoid subsequent clamping inaccuracies and improve the chamfering quality of the bolt. This can effectively solve the problems in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a bolt end chamfering device, comprising a machine base, a bracket at the upper end of the machine base, a support plate at the middle of the upper end of the machine base, a fixed support bar at the rear end of the support plate, left and right symmetrical guide rods fixedly connected between the front and rear inner walls of the support plate, a movable support bar slidably connected between the guide rods, a grinding machine at the rear side of the upper end of the machine base, and a flattening mechanism.

[0007] The flattening mechanism includes a guide rod, a push bar, a U-shaped seat, a connecting rod, a slider, and a U-shaped block. A support frame is provided on the rear side of the upper end of the machine platform. Guide rods are slidably connected to the sliding holes at both ends of the support frame. Push bars are fixedly connected to the front ends of the guide rods. Symmetrical sliders are slidably connected to the upper end of the support frame. U-shaped blocks are fixedly connected to the front ends of the sliders. A U-shaped seat is provided in the middle of the rear end of the push bar. Connecting rods are rotatably connected to the left and right sides of the rear end of the U-shaped seat and the longitudinally adjacent U-shaped blocks. When chamfering the bolts, the bolts are aligned during bolt conveying to avoid subsequent clamping inaccuracies and improve the chamfering quality of the bolts.

[0008] Furthermore, a control switch group is provided on the rear side of the left end of the machine base. The input end of the control switch group is electrically connected to an external power source, and the input end of the angle grinding machine is electrically connected to the output end of the control switch group, providing electrical connections for each electrical component.

[0009] Furthermore, the pushing mechanism also includes a driving assembly, which includes a bidirectional screw, a worm gear, and a worm. The bidirectional screw is rotatably connected between the left and right inner walls of the upper end of the support frame. The left and right ends of the bidirectional screw are respectively threaded to the threaded holes in the middle of the adjacent sliders. The worm gear is fixedly sleeved in the middle of the bidirectional screw. The worm is rotatably connected to the top wall of the support frame. The worm gear and the worm are meshed and connected to provide a rotatable connection.

[0010] Furthermore, the drive assembly also includes a motor, with the upper end of the support frame equipped with a motor, the lower end of the motor's output shaft being fixedly connected to the upper end of the worm gear, and the input end of the motor being electrically connected to the output end of the control switch group to provide a driving force.

[0011] Furthermore, a threaded rod is rotatably connected between the front and rear inner walls of the support plate, and the threaded end of the movable support bar is threadedly connected to the threaded rod. A handwheel is fixedly connected to the front end of the threaded rod for easy adjustment.

[0012] Furthermore, symmetrical sliding rods are fixedly connected between the left and right inner walls of the machine tool, and sliding plates are slidably connected between the sliding rods. The upper end of the sliding plate is provided with evenly distributed electric push rods. The telescopic ends of the electric push rods are all fixedly connected to the lower end of the support plate, and the input ends of the electric push rods are all electrically connected to the output end of the control switch group to provide lifting drive.

[0013] Furthermore, the left wall of the machine tool is provided with an electric push rod II. The telescopic end of the electric push rod II is fixedly connected to the left end of the sliding plate. The input end of the electric push rod II is electrically connected to the output end of the control switch group to provide movement drive.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: This end chamfering device for bolt processing has the following advantages:

[0015] The motor drives the bidirectional screw to rotate through the worm gear and meshing worm wheel. The bidirectional screw, through the slider, U-block, connecting rod and U-shaped seat, causes the push bar to move back and forth under the guidance and support of the guide rod. The push bar abuts against the end of the bolt, and the front end of the bolt abuts against the rear wall of the L-shaped baffle, pushing the ends of all the bolts to be processed to the same plane, avoiding the inaccuracy of subsequent clamping and improving the chamfering quality of the bolts. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0018] Figure 3 This is a schematic diagram of the front side cross-sectional structure of the present invention;

[0019] Figure 4 This is an enlarged structural diagram of point A in this utility model.

[0020] In the diagram: 1. Machine base, 2. Bracket, 3. Control switch assembly, 4. Support plate, 5. Fixed support bar, 6. Guide rod, 7. Movable support bar, 8. Support frame, 9. Pushing mechanism, 91. Guide rod, 92. Push bar, 93. U-shaped seat, 94. Connecting rod, 95. Slider, 96. U-shaped block, 97. Drive assembly, 971. Bidirectional screw, 972. Worm gear, 973. Worm, 974. Motor, 10. Threaded rod, 11. Handwheel, 12. Electric push rod one, 13. Sliding plate, 14. Sliding rod, 15. Electric push rod two, 16. Angle grinder. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-4This embodiment provides a technical solution: a bolt end chamfering device, including a machine base 1, a support 2 at the upper end of the machine base 1 (the upper end of the support 2 has evenly distributed V-shaped grooves for easy bolt fixing, and an L-shaped baffle can be set on the upper side of the front end of the support 2), a support plate 4 in the middle of the upper end of the machine base 1, a fixed support bar 5 at the rear end of the support plate 4, symmetrical guide rods 6 fixedly connected between the front and rear inner walls of the support plate 4, and a movable support bar 7 slidably connected between the guide rods 6 (the upper ends of the fixed support bar 5 and the movable support bar 7 are respectively provided with evenly distributed V-shaped grooves for easy bolt movement), a grinding machine 16 at the rear of the upper end of the machine base 1, and a flattening mechanism 9, and a control switch group 3 at the rear of the left end of the machine base 1. The input terminal of the angle grinder 16 is electrically connected to an external power supply, and the input terminal of the angle grinder 16 is electrically connected to the output terminal of the control switch group 3. (The angle grinder 16 is a prior art chamfering machine, which includes an electric push rod three, an annular fixing block, an electric guide rail, an AC asynchronous motor, a tool spindle, a chamfering cutter, and a positioning sensor. When the bolt moves to the front end of the chamfering cutter, the electric push rod three operates by adjusting the control switch group 3. The extension end of the electric push rod three will drive the annular fixing block to move downward, thereby fixing the bolt. Initially, the detection end of the positioning sensor is aligned with the front end of the chamfering cutter. The positioning sensor will detect the distance between the bolt end and the detection head in real time. Then the electric guide rail operates, and the electric guide rail drives the AC asynchronous motor to move forward through the connecting block, thereby driving the tool spindle to move the bolt forward.) The movable chamfering cutter contacts the end of the bolt, then the AC asynchronous motor operates. The output shaft of the AC asynchronous motor drives the tool spindle to rotate, and the rotation of the tool spindle drives the chamfering cutter to chamfer the bolt. A threaded rod 10 is rotatably connected between the middle of the front and rear inner walls of the support plate 4. The threaded end of the movable support 7 is threadedly connected to the threaded rod 10. A handwheel 11 is fixedly connected to the front end of the threaded rod 10. (A second bellows is fixedly connected between the rear wall of the support plate 4 and the rear end of the movable support 7, and between the front end of the movable support 7 and the front wall of the support plate 4. The second bellows protect the threaded rod 10, prevent debris from entering the interior of the threaded rod 10, provide sealing and lubrication to the threaded rod 10, and extend the service life of the threaded rod 10.) The left and right inner walls of the machine base 1 A series of symmetrical sliding rods 14 are fixedly connected between the two sliding plates 14. A sliding plate 13 is slidably connected between the sliding rods 14. The upper end of the sliding plate 13 is provided with evenly distributed electric push rods 12. The telescopic ends of the electric push rods 12 are fixedly connected to the lower end of the support plate 4. The input ends of the electric push rods 12 are electrically connected to the output end of the control switch group 3. An electric push rod 15 is provided on the left wall of the machine base 1. The telescopic end of the electric push rod 15 is fixedly connected to the left end of the sliding plate 13. (The upper end of the machine base 1 has a clearance hole corresponding to the electric push rod 12. The telescopic end of the electric push rod 12 will pass through the clearance hole and be fixedly connected to the lower end of the support plate 4. A sliding strip can be fixedly sleeved on the outer wall of the telescopic rod of the electric push rod 15. The sliding strip is slidably connected between the two sliding rods 14.)Furthermore, a sliding plate 13 is slidably connected between the sliding rods 14. The force on the sliding plate 13 and the structure above it is supported by the sliding rods 14. The telescopic rod of the electric push rod 15 is also slidably supported by the two sliding rods 14 through the sliding bar. Therefore, the telescopic rod of the electric push rod 15 is subjected to very little vertical force perpendicular to the axial direction, thus providing force limit protection for the electric push rod 15 and preventing damage to it. The input end of the electric push rod 15 is electrically connected to the output end of the control switch group 3. Then, by adjusting the control switch group 3, the electric push rod 12 will operate separately. The telescopic end of the electric push rod 12 will push the support plate 4 upward, and then move it upward through the V-groove of the fixed support bar 5 and the movable support bar 7. The movement causes the bolt to move upwards. Then, electric push rod 2 (15) operates, its telescopic end pushing the sliding plate 13 to move to the right between the sliding rods 14. Next, electric push rod 12 operates, its telescopic end retracting, causing the support plate 4 to retract. This, in turn, causes the bolt to move downwards through the fixed support 5 and the movable support 7, landing in the V-groove 1 at the upper end of the bracket 2. This moves the rightmost bolt to the front end of the angle grinder 16. Then, by controlling the switch group 3, the angle grinder 16 operates, chamfering the end of the bolt. After chamfering, by controlling the switch group 3, the coordinated operation of electric push rods 12 and 2 (15) moves the bolt to the right for unloading.

[0023] The leveling mechanism 9 includes a guide rod 91, a push bar 92, a U-shaped seat 93, a connecting rod 94, a slider 95, and a U-shaped block 96. A support frame 8 is provided on the rear side of the upper end of the machine base 1. Guide rods 91 are slidably connected to the sliding holes at both ends of the support frame 8. Push bars 92 are fixedly connected between the front ends of the guide rods 91. Sliding sliders 95 are symmetrically connected to the upper end of the support frame 8. U-shaped blocks 96 are fixedly connected to the front ends of the sliders 95. A U-shaped seat 93 is provided in the middle of the rear end of the push bar 92. Connecting rods 94 are rotatably connected to the left and right sides of the rear end of the U-shaped seat 93 and the longitudinally adjacent U-shaped blocks 96. The leveling mechanism 9 also includes a drive assembly 97, which includes a bidirectional screw 971, a worm gear 972, and a worm 973. A double-acting screw 971 is rotatably connected between the left and right inner walls of the upper end of the support frame 8. The left and right ends of the double-acting screw 971 are threadedly connected to the threaded holes in the middle of the adjacent sliders 95. A worm gear 972 is fixedly sleeved in the middle of the double-acting screw 971. A worm 973 is rotatably connected to the top wall of the support frame 8. The worm gear 972 and worm 973 are meshed together. (A protective cover can be installed at the center of the upper end of the support frame 8, with the worm gear 972 and worm 973 located inside the protective cover to protect them and prevent debris from entering and affecting their precision.) Then, a protective cover is installed between the left wall of the machine base 1 and the left end of the left slider 95, and between the right end of the left slider 95 and the protective cover. A bellows is fixedly connected between the left end of the cover and the right end of the protective cover and the left end of the right slider 95 and the right end of the right slider 95 to the right wall of the machine base 1. The bellows are respectively sleeved on the outside of the bidirectional screw 971 to protect the bidirectional screw 971, provide sealing and lubrication to the bidirectional screw 971, and extend the service life of the bidirectional screw 971. The drive assembly 97 also includes a motor 974. The upper end of the support frame 8 is equipped with the motor 974. The lower end of the output shaft of the motor 974 is fixedly connected to the upper end of the worm gear 973. The input end of the motor 974 is electrically connected to the output end of the control switch group 3. When chamfering the bolts, multiple bolts are first placed inside the V-groove at the upper end of the bracket 2, and then the control switch group 3 is activated. The motor 974 operates under control, and its output shaft drives the worm gear 973 to rotate. The rotation of the worm gear 973 drives the bidirectional screw 971 to rotate through the meshing worm wheel 972. The rotation of the bidirectional screw 971 drives the sliders 95 at both ends to slide towards each other along the upper end of the support frame 8. The U-shaped block 96 at the front end of the slider 95 is rotatably connected to the U-shaped seat 93 at the rear end of the push bar 92 through the connecting rod 94. Therefore, when the slider 95 slides, it will push the push bar 92 to move back and forth along the guide rod 91 through the connecting rod 94. When the push bar 92 moves forward, its front end abuts against the end of the bolt. The front end of the bolt will abut against the rear wall of the L-shaped baffle, pushing the ends of all the bolts to be processed to the same plane, eliminating the problem of uneven ends caused by bolt length errors, and ensuring the consistency of subsequent chamfering.

[0024] The working principle of the bolt end chamfering device provided by this utility model is as follows: When chamfering bolts, multiple bolts are first placed inside the V-groove at the upper end of the bracket 2. Then, the motor 974 is operated by controlling the control switch group 3. The output shaft of the motor 974 drives the worm 973 to rotate. The rotation of the worm 973 drives the bidirectional screw 971 to rotate through the meshing worm wheel 972. The rotation of the bidirectional screw 971 drives the sliders 95 at the left and right ends to slide towards each other along the upper end of the support frame 8. The U-shaped block 96 at the front end of the slider 95 is rotatably connected to the U-shaped seat 93 at the rear end of the pusher 92 through the connecting rod 94. Therefore, when the slider 95 slides, it will push the pusher 92 to move back and forth along the guide rod 91 through the connecting rod 94. When the pusher 92 moves forward, the front end abuts against the end of the bolt. The front end of the bolt abuts against the rear wall of the L-shaped baffle, pushing the ends of all the bolts to be processed to the same plane, eliminating the problem of uneven ends caused by bolt length errors, and ensuring consistency for subsequent chamfering. To ensure safety, the electric push rod 12 will operate by adjusting the control switch group 3. The telescopic end of the electric push rod 12 will push the support plate 4 upward, which will then move the bolt upward through the V-groove 2 of the fixed support bar 5 and the movable support bar 7. Then, the electric push rod 15 will operate, and the telescopic end of the electric push rod 15 will push the sliding plate 13 to move to the right between the sliding rods 14. Then, the electric push rod 12 will operate, and the telescopic end of the electric push rod 12 will retract, causing the support plate 4 to retract. This will then move the bolt downward through the fixed support bar 5 and the movable support bar 7, causing it to fall into the V-groove 1 at the upper end of the bracket 2. This will then move the rightmost bolt to the front end of the angle grinding machine 16. Then, the angle grinding machine 16 will operate by adjusting the control switch group 3. The angle grinding machine 16 will chamfer the end of the bolt. After chamfering, the electric push rod 12 and the electric push rod 15 will work together by adjusting the control switch group 3 to move the bolt to the right for unloading.

[0025] It is worth noting that, in the above embodiments, the motor 974, electric push rod 12, electric push rod 2 15, and angle grinder 16 are as follows: the motor 974 can be YS8024; the electric push rod 12 and electric push rod 2 15 can both be RM-RLA-11-150-2; the angle grinder 16 can be RT-150AC bolt chamfering machine; and the control switch group 3 is equipped with switch buttons that correspond one-to-one with the motor 974, electric push rod 12, electric push rod 2 15, and angle grinder 16 and are used to control their switching operation.

[0026] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A bolt end chamfering device, comprising a machine base (1), wherein a bracket (2) is provided at the upper end of the machine base (1), a support plate (4) is provided at the middle of the upper end of the machine base (1), a fixed support bar (5) is provided at the rear end of the support plate (4), left and right symmetrical guide rods (6) are fixedly connected between the front and rear inner walls of the support plate (4), and movable support bars (7) are slidably connected between the guide rods (6), and a grinding machine (16) is provided at the rear side of the upper end of the machine base (1), characterized in that: It also includes a leveling mechanism (9); The leveling mechanism (9) includes a guide rod (91), a push bar (92), a U-shaped seat (93), a connecting rod (94), a slider (95), and a U-shaped block (96). A support frame (8) is provided on the rear side of the upper end of the machine base (1). The guide rod (91) is slidably connected to the sliding holes at the left and right ends of the support frame (8). The push bar (92) is fixedly connected between the front ends of the guide rod (91). The slider (95) is slidably connected to the upper end of the support frame (8). The U-shaped block (96) is fixedly connected to the front end of the slider (95). A U-shaped seat (93) is provided in the middle of the rear end of the push bar (92). The connecting rod (94) is rotatably connected to the U-shaped block (96) on the left and right sides of the rear end of the U-shaped seat (93) and the longitudinally adjacent U-shaped block (96).

2. The bolt end chamfering device according to claim 1, characterized in that: The machine base (1) is provided with a control switch group (3) on the rear side of the left end. The input end of the control switch group (3) is electrically connected to an external power source, and the input end of the angle grinding machine (16) is electrically connected to the output end of the control switch group (3).

3. The bolt end chamfering device according to claim 2, characterized in that: The pushing mechanism (9) further includes a drive assembly (97), which includes a bidirectional screw (971), a worm gear (972), and a worm (973). The bidirectional screw (971) is rotatably connected between the left and right inner walls of the upper end of the support frame (8). The left and right ends of the bidirectional screw (971) are respectively threaded to the threaded holes in the middle of the adjacent sliders (95). The worm gear (972) is fixedly sleeved in the middle of the bidirectional screw (971). The worm (973) is rotatably connected to the top wall of the support frame (8). The worm gear (972) and the worm (973) are meshed together.

4. The bolt end chamfering device according to claim 3, characterized in that: The drive assembly (97) also includes a motor (974). The upper end of the support frame (8) is provided with a motor (974). The lower end of the output shaft of the motor (974) is fixedly connected to the upper end of the worm (973). The input end of the motor (974) is electrically connected to the output end of the control switch group (3).

5. The bolt end chamfering device according to claim 1, characterized in that: A threaded rod (10) is rotatably connected in the middle between the front and rear inner walls of the support plate (4). The threaded opening in the middle of the movable support bar (7) is threadedly connected to the threaded rod (10). A handwheel (11) is fixedly connected to the front end of the threaded rod (10).

6. The bolt end chamfering device according to claim 2, characterized in that: The machine base (1) is fixedly connected between the left and right inner walls with symmetrical sliding rods (14). The sliding rods (14) are slidably connected to each other with sliding plates (13). The upper end of the sliding plate (13) is provided with evenly distributed electric push rods (12). The telescopic ends of the electric push rods (12) are all fixedly connected to the lower end of the support plate (4). The input ends of the electric push rods (12) are all electrically connected to the output end of the control switch group (3).

7. The bolt end chamfering device according to claim 6, characterized in that: The left wall of the machine base (1) is provided with an electric push rod two (15). The telescopic end of the electric push rod two (15) is fixedly connected to the left end of the sliding plate (13). The input end of the electric push rod two (15) is electrically connected to the output end of the control switch group (3).

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