Bolt fastener chamfering device

Abstract

The present invention relates to the technical field of machine tool accessories, and specifically discloses a bolt fastener chamfering device, comprising a machine body and a workbench fixedly installed on the inner wall of the machine body, the machine body is provided with an opening that passes through front and back and is used for feeding and discharging materials, and the top of the workbench is provided with a jacking and loading unit for cyclically jacking, translating and placing bolts to complete the loading operation. In the present application, the jacking frame moves downward, driving two positioning plates to synchronously clamp the bolts through balls, and radially limiting the bolts, so that the radial freedom of the bolts is completely locked through the constraints of the positioning plates and balls, ensuring that the axis of the bolt is strictly coaxial with the axis of the drive unit, providing stable radial support for high-speed rotation for end face chamfering, avoiding uneven chamfering and tool chipping caused by axis offset, and because the bolt is radially limited, its alignment with the socket of the drive unit is greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of machine tool accessories, and more particularly to a chamfering device for a bolt fastener. Background Art

[0002] Bolt fasteners are standardized components used to connect and fasten mechanical parts. They generally consist of a head and a screw. They generate axial tension through threaded engagement, tightly connecting two or more parts together and ensuring a reliable and stable connection. They are widely used in numerous fields, including machinery manufacturing, the automotive industry, and construction engineering.

[0003] During the production and manufacturing process of bolts, it is necessary to remove burrs and sharp edges on the end faces of the bolts by chamfering, so that they are easier to insert into the holes of the connected parts and avoid scratching the hole walls. At the same time, it is also beneficial for the starting end of the thread to better cooperate with the nut, thereby improving the reliability of the connection and assembly efficiency. At present, the chamfering operation of bolts in the production and manufacturing process is generally carried out by a bolt chamfering machine. Specifically, the loading mechanism first transports the bolt to the chamfering station, and then the cylinder pushes the bolt into the rotating fixture. After the bolt is inserted, the rotating fixture clamps the bolt. Then, the rotating fixture drives the bolt to rotate at high speed. At the same time, the tool slide controls the tool to approach the rotating bolt according to the preset program to chamfer the bolt. After the processing is completed, the bolt is pushed to be unloaded by the cylinder. However, this chamfering operation method still has certain defects:

[0004] Currently, chamfering machines are used to fix and position structural accessories of bolts (i.e., feeding mechanisms and rotary fixtures). Due to the lack of precise radial constraints on the bolts, after the bolts fall on the top of the load-bearing components, their alignment with the sockets of the rotary fixture is more dependent on the feeding accuracy, and it is difficult to ensure high alignment. Once the bolts are not fully aligned with the rotary fixture, a collision may occur when they are pushed into the drive unit, causing damage to the bolts and affecting the continuity and stability of production. In addition, when chamfering at high speed, the cutting force of the tool on the bolts may be uneven due to inconsistent axes, resulting in uneven chamfering or damage to the tool. Summary of the Invention

[0005] The present invention provides a chamfering device for a bolt fastener to solve the above technical problems.

[0006] The present invention provides a bolt fastener chamfering device, which includes a machine body and a workbench fixedly installed on the inner wall of the machine body. The machine body is provided with an opening that passes through from front to back and is used for loading and unloading materials. The top of the workbench is provided with a lifting and loading unit for cyclically lifting, translating and placing bolts to complete the loading operation.

[0007] The jacking and loading unit includes a support frame fixedly installed on the top of the workbench, a jacking assembly arranged between the front and rear inner walls of the support frame, and a control assembly for controlling the jacking assembly. A driving unit for driving the bolt to rotate is arranged on the right side of the jacking and loading unit, and a positioning unit for limiting and guiding the bolt and pushing the bolt into the driving unit to complete the positioning and fixation of the bolt is arranged on the top of the jacking assembly.

[0008] The positioning unit includes a guide assembly, a traction assembly for pulling the guide assembly, a push assembly and an extrusion assembly for controlling the guide assembly. After the driving unit cooperates with the positioning unit to position and fix the bolt, it drives the bolt to rotate for chamfering.

[0009] A blanking unit is provided in the driving unit. After the chamfering operation is completed, the jacking assembly drives the positioning unit to release the positioning and fixation of the bolt, and the blanking unit simultaneously ejects the bolt that has completed the chamfering operation.

[0010] Furthermore, a tool holder unit for chamfering bolts is provided on the top of the workbench, and the drive unit includes a fixing frame fixedly installed on the top of the workbench and an installation box fixedly installed in the fixing frame. A drive motor is fixedly installed on the left inner wall of the installation box, and a socket for inserting the bolt is opened on the left side of the installation box, and the output shaft of the drive motor extends into the socket.

[0011] Furthermore, the unloading unit includes an installation cavity opened in the output shaft of the driving motor, and an ejector rod is fixedly installed on the inner wall of the opening side of the installation cavity through an energy storage spring. A unloading rack is fixedly installed on the top of the workbench, which is located on the rear side of the jacking assembly and is used to guide the bolts that have completed the chamfering operation to roll and unload.

[0012] Furthermore, the jacking assembly includes several X-axis slides installed on the right inner wall of the support frame for sliding back and forth, a Z-axis slide is installed on the left side of the X-axis slide for sliding up and down, and jacking rods are fixedly installed on the rear sides of several Z-axis slides, and a jacking frame is commonly installed on the top ends of several jacking rods.

[0013] Furthermore, a loading support member and a positioning support member located on the rear side of the loading support member are fixedly installed on the top of the support frame. The loading support member is used to support the bolts in the loading process, and the positioning support member is used to support the bolts in the positioning and fixing process. The loading support member and the positioning support member are both composed of two parts, left and right.

[0014] Furthermore, the control component includes a fixed plate fixedly installed on the inner wall of the bottom of the support frame and connected to the inner wall of the left side of the support frame, a toggle plate is rotatably installed on the right side of the fixed plate, a through toggle groove is opened on the right side of the toggle plate, a circular groove is opened on the right side of the fixed plate, a sliding block is slidably installed between the circular groove and the toggle groove, and the lifting rod on the rearmost side is fixedly connected to the sliding block.

[0015] Furthermore, the guide assembly includes two support plates symmetrically installed on the front and rear sides of the left half of the positioning support member, the adjacent sides of the two support plates are fixedly installed with a positioning plate through a return spring, the adjacent sides of the two positioning plates are rotatably installed with balls, and the opposite sides of the two positioning plates are fixedly installed with a limit rod that slides through the support plate, and a set of return springs is arranged on the outside of the limit rod.

[0016] Furthermore, the traction assembly includes a fixed pulley fixedly mounted on the rear side of the support plate located on the front side and a traction rope wound around the outside of the fixed pulley, the rear end of the rear limit rod 1 is fixedly mounted with a traction plate, the front end of the front limit rod 1 is fixedly mounted with a pressure piece, the rear side of the pressure piece is fixedly mounted with a connecting plate via a connecting rod that slides through the support plate, the two ends of the traction rope are respectively fixedly connected to the traction plate and the connecting plate, and the top of the jacking frame is fixedly mounted with an extrusion block for extruding the pressure piece via an L-shaped rod.

[0017] Furthermore, the pushing assembly includes a mounting frame fixedly mounted on the top of the support frame and a wedge plate fixedly mounted on the left side of the mounting frame through a second return spring. A push rod sliding through the mounting frame and used to push the bolt is fixedly mounted on the right side of the wedge plate, and a circular plate is rotatably mounted on the right end of the push rod.

[0018] Furthermore, the extrusion assembly includes an extrusion plate fixedly mounted on the bottom of the lifting frame through a follower frame consisting of a U-shaped segment and an L-shaped segment on the left side of the U-shaped segment and used for extruding the wedge plate.

[0019] The beneficial effects of the present invention are:

[0020] 1. In the present application, the lifting frame is moved downward to drive the two positioning plates to synchronously clamp the bolts through the ball bearings, thereby limiting the bolts radially. The radial freedom of the bolts is completely locked by the constraints of the positioning plates and the ball bearings, ensuring that the axis of the bolt is strictly coaxial with the axis of the drive unit, providing stable radial support for the high-speed rotating end face chamfering, avoiding uneven chamfering and tool chipping caused by axis deviation, and because the bolt is radially limited, its alignment with the socket of the drive unit is greatly improved, thereby effectively avoiding the risk of the bolt falling on the top of the bracket but not fully aligned with the drive unit, and colliding when being pushed into the drive unit, greatly improving the success rate and stability of the bolt insertion into the drive unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0022] Figure 2 It is a schematic diagram of the internal three-dimensional structure of the body of the present invention.

[0023] Figure 3It is a schematic diagram of the three-dimensional structure of the bolt, positioning unit, loading support member and support frame of the present invention.

[0024] Figure 4 It is a partial three-dimensional structural diagram of the X-axis slide, Z-axis slide, jacking rod, jacking frame and loading support member of the present invention.

[0025] Figure 5 It is a schematic diagram of the three-dimensional structure of the return spring 2, the wedge plate, the push rod and the circular plate of the present invention.

[0026] Figure 6 It is a schematic diagram of the three-dimensional structure of the fixed pulley, traction rope, traction plate, pressure piece and connecting rod of the present invention.

[0027] Figure 7 It is a schematic diagram of the three-dimensional structure of the jacking rod, jacking frame, fixing plate and circular groove of the present invention.

[0028] Figure 8 It is a schematic diagram of the three-dimensional structure of the toggle plate, toggle groove, fixed plate, return groove, control motor and sliding block of the present invention.

[0029] Figure 9 It is a schematic diagram of the three-dimensional structure of the tool holder unit and the blanking rack of the present invention.

[0030] Figure 10 It is a schematic diagram of the three-dimensional structure of the drive unit and the jack part of the present invention.

[0031] Figure 11 It is a partial three-dimensional structural sectional view of the driving unit and the blanking unit of the present invention.

[0032] In the figure: 1. Machine body; 2. Workbench; 3. Bolt; 4. Lifting and loading unit; 41. Lifting assembly; 42. Control assembly; 411. X-axis slide; 412. Z-axis slide; 413. Lifting rod; 414. Lifting frame; 415. Positioning support; 416. Loading support; 421. Toggle plate; 422. Toggle slot; 423. Fixing plate; 424. Reciprocating slot; 425. Control motor; 426. Sliding block; 43. Support frame; 5. Positioning unit; 51. Guide assembly; 511. Support plate; 512. Return spring 1; 513. Positioning plate; 514. Limiting rod 1; 52. Traction Assembly; 521, fixed pulley; 522, traction rope; 523, traction plate; 524, pressure piece; 525, connecting rod; 526, connecting plate; 527, extrusion block; 53, pushing assembly; 531, mounting frame; 532, return spring 2; 533, wedge plate; 534, push rod; 535, circular plate; 54, extrusion assembly; 541, follower frame; 542, extrusion plate; 6, drive unit; 61, fixed frame; 62, mounting box; 63, drive motor; 64, jack; 7, tool holder unit; 8, blanking unit; 81, mounting cavity; 82, energy storage spring; 83, ejector rod; 84, blanking frame. DETAILED DESCRIPTION

[0033] The subject matter described herein will now be discussed with reference to example embodiments. It should be understood that these embodiments are discussed to enable those skilled in the art to better understand and implement the subject matter described herein. The functions and arrangements of the elements discussed may be varied without departing from the scope of protection of this specification. Various examples may omit, substitute, or add various processes or components as needed. In addition, features described with respect to some examples may also be combined in other examples.

[0034] See Figure 1 and Figure 2 In this embodiment, a bolt fastener chamfering device is proposed, including a body 1 and a workbench 2 fixedly installed on the inner wall of the body 1 and arranged horizontally. The body 1 is provided with a front-to-back through-opening for loading and unloading materials. The top of the workbench 2 is provided with a lifting and loading unit 4 for cyclically lifting, translating and placing bolts 3 to complete the loading operation.

[0035] It should be noted that the size of the opening that passes through the front and back and is used for material loading and unloading is adaptively designed according to the maximum length of the bolt 3 to ensure that the bolt 3 can be smoothly loaded and unloaded. The workbench 2 is fixedly mounted on the inner wall of the machine body 1 by welding and is arranged horizontally to provide a stable support platform for the jacking and loading unit 4, positioning unit 5, drive unit 6, tool holder unit 7 and unloading unit 8.

[0036] See Figure 2 、 Figure 3 and Figure 4 The jacking and loading unit 4 includes a support frame 43 fixedly installed on the top of the workbench 2, a jacking component 41 arranged between the front and rear inner walls of the support frame 43, and a control component 42 for controlling the jacking component 41. A driving unit 6 for driving the bolt 3 to rotate at high speed is provided on the right side of the jacking and loading unit 4. A positioning unit 5 is provided on the top of the jacking component 41 for limiting and guiding the bolt 3 and pushing the bolt 3 to insert into the driving unit 6 to complete the positioning and fixing of the bolt 3. A tool holder unit 7 for chamfering the bolt 3 is provided on the top of the workbench 2.

[0037] It should be noted that the tool holder unit 7 is an actuator for installing a chamfering tool and chamfering the end of the bolt 3. By cooperating with the drive unit 6 (driving the bolt 3 to rotate), the chamfering of the end face of the bolt 3 is achieved to meet the accuracy and assembly requirements of the bolt 3. The above-mentioned tool holder unit 7 is common knowledge to those skilled in the art, so it will not be described in detail in this application.

[0038] See Figure 3 、 Figure 4 、 Figure 5 and Figure 7 The lifting assembly 41 includes several X-axis slides 411 installed on the right inner wall of the support frame 43 for sliding back and forth, and a Z-axis slide 412 is installed on the left side of the X-axis slide 411 for sliding up and down. The rear sides of the several Z-axis slides 412 are fixedly installed with lifting rods 413, and the top ends of the several lifting rods 413 are jointly installed with a lifting frame 414.

[0039] See Figure 3 、 Figure 4 、 Figure 5 and Figure 6 A loading support member 416 and a positioning support member 415 located on the rear side of the loading support member 416 are fixedly installed on the top of the support frame 43. The loading support member 416 is used to support the bolt 3 in the loading process, and the positioning support member 415 is used to support the bolt 3 in the positioning and fixing process. The loading support member 416 and the positioning support member 415 are both composed of two parts, left and right.

[0040] It should be noted that the tops of the positioning support member 415 , the loading support member 416 and the jacking frame 414 are all provided with brackets for supporting the bolts 3 .

[0041] See Figure 3 、 Figure 4 、 Figure 7 and Figure 8The control component 42 includes a fixed plate 423 fixedly mounted on the inner wall of the bottom of the support frame 43 and connected to the inner wall of the left side of the support frame 43. A toggle plate 421 is rotatably mounted on the right side of the fixed plate 423. A through toggle groove 422 is provided on the right side of the toggle plate 421. A circular groove 424 is provided on the right side of the fixed plate 423. A sliding block 426 is slidably mounted between the circular groove 424 and the toggle groove 422. The rearmost lifting rod 413 is fixedly connected to the sliding block 426. A control motor 425 is fixedly mounted on the left side of the fixed plate 423. The output shaft of the control motor 425 is fixedly connected to the rotating shaft of the toggle plate 421.

[0042] When in use, first fill the bracket of the top of the loading support member 416 with the bolts 3 to be processed. Then, start the control motor 425, and the output shaft of the control motor 425 rotates counterclockwise to drive the toggle plate 421 to rotate. As the toggle plate 421 rotates, the sliding block 426 will be toggled through the toggle groove 422, driving the sliding block 426 to slide along the rectangular path of the circular groove 424. When the sliding block 426 slides upward along the front vertical section of the circular groove 424, during this process, the sliding block 426 will slide along the toggle groove 422 to adapt to the change in the distance between the circular groove 424 and the rotation center of the toggle plate 421. At the same time, the sliding block 426 will synchronously drive the lifting frame 414 to move vertically upward through the lifting rod 413, gradually approaching and finally lifting the bolt 3 in the bracket of the loading support member 416 (in this process, the Z-axis slide 412 will move synchronously to adapt to the movement of the lifting rod 413 and guide the lifting rod 413).

[0043] After the lifting frame 414 lifts the bolt 3, when the sliding block 426 moves to the top of the vertical section on the front side of the circular groove 424 and starts to move backward along the horizontal section on the circular groove 424, the sliding block 426 will synchronously drive the lifting frame 414 to move to the rear side (that is, close to the positioning support 415 side) through the lifting rod 413 until the sliding block 426 moves to the connection between the upper horizontal section and the rear horizontal section of the circular groove 424. At this time, the bolt 3 has just moved the distance of one station (that is, the distance between two adjacent brackets), and one of the bolts to be loaded At this time, the working bolt 3 also happens to move to the top of the positioning support 415. Then, as the toggle plate 421 continues to rotate, the sliding block 426 will slide downward along the rear vertical section of the circular groove 424 and gradually approach the positioning support 415. In this process, after the bolt 3 falls on the top of the positioning support 415, the lifting frame 414 continues to move downward to drive the positioning unit 5 to limit and guide the bolt 3 and push the bolt 3 into the driving unit 6 to complete the positioning and fixation of the bolt 3, providing a stable foundation for the subsequent chamfering operation of the tool holder unit 7.

[0044] See Figure 3 、 Figure 5 and Figure 6The positioning unit 5 includes a guide assembly 51, a traction assembly 52 for pulling the guide assembly 51, a pushing assembly 53 and an extrusion assembly 54 for controlling the guide assembly 51. After the driving unit 6 cooperates with the positioning unit 5 to position and fix the bolt 3, it drives the bolt 3 to rotate for chamfering.

[0045] See Figure 3 、 Figure 5 and Figure 6 The guide assembly 51 includes two support plates 511 symmetrically installed on the front and rear sides of the left half of the positioning support member 415. The adjacent sides of the two support plates 511 are fixedly installed with positioning plates 513 through a return spring 512. The adjacent sides of the two positioning plates 513 are rotatably installed with balls. The opposite sides of the two positioning plates 513 are fixedly installed with a limit rod 514 that slides through the support plate 511. The return spring 512 is sleeved on the outside of the limit rod 514.

[0046] See Figure 3 、 Figure 5 and Figure 6 The traction assembly 52 includes a fixed pulley 521 fixedly mounted on the rear side of the support plate 511 at the front side and a traction rope 522 wound around the outside of the fixed pulley 521. The rear end of the limiting rod 514 on the rear side is fixedly mounted with a traction plate 523. The front end of the limiting rod 514 on the front side is fixedly mounted with a pressure piece 524. The top of the pressure piece 524 is provided with a wedge-shaped surface. The rear side of the pressure piece 524 is fixedly mounted with a connecting rod 525 that slides through the support plate 511. The two ends of the traction rope 522 are fixedly mounted. The ends are fixedly connected to the traction plate 523 and the connecting plate 526 respectively. The top of the jacking frame 414 is fixedly installed with an extrusion block 527 for extruding the pressure piece 524 through an L-shaped rod. When the jacking assembly 41 drives the bolt 3 to be placed on the top of the positioning support 415, it will drive the extrusion block 527 to squeeze the pressure piece 524, pushing the front positioning plate 513 to move backward, and at the same time, the rear positioning plate 513 is pulled forward by the traction rope 522, so that the balls on the two positioning plates 513 are synchronously pressed against the bolt 3 for positioning.

[0047] When in use, after the bolt 3 falls on the top of the positioning support member 415, the lifting frame 414 continues to move downward, first driving the extrusion block 527 to move downward to contact and squeeze the wedge-shaped surface on the top of the pressure-receiving member 524, so that the pressure-receiving member 524 pushes the front limit rod 1 514, driving the front positioning plate 513 to overcome the pre-tightening force of the return spring 1 512 and move backward and stretch the return spring 1 512. At the same time, the backward movement of the pressure-receiving member 524 will also drive the connecting plate 526 to move backward through the connecting rod 525, so that the connecting plate 526 pulls the traction rope 522 backward. The backward pulling force is converted into a forward pulling force under the action of the fixed pulley 521, so that the traction rope 522 pulls the traction plate 523 to move forward, thereby driving the rear positioning plate 513 to be pulled forward, so that the two positioning plates 51 3 The bolt 3 is synchronously clamped by the ball bearings to limit the bolt 3 in radial direction, thereby completely locking the radial freedom of the bolt 3 through the constraints of the positioning plate 513 and the ball bearings, ensuring that the axis of the bolt 3 is strictly coaxial with the axis of the drive unit 6, providing stable radial support for high-speed rotation chamfering, avoiding uneven chamfering and tool edge breakage caused by axis deviation, after completing the radial limitation of the bolt 3, the lifting frame 414 continues to move downward to drive the pushing assembly 53 to push the radially limited bolt 3 into the drive unit 6, so as to complete the positioning and fixation of the bolt 3, and provide a stable foundation for the subsequent chamfering operation of the tool holder unit 7. In the process of the bolt 3 being pushed into the drive unit 6, the radial limitation can ensure that the bolt 3 is always inserted into the drive unit 6 along the path aligned with the drive unit 6.

[0048] See Figure 3 、 Figure 5 and Figure 6 The pushing assembly 53 includes a mounting frame 531 fixedly mounted on the top of the support frame 43 and a wedge plate 533 fixedly mounted on the left side of the mounting frame 531 through a second return spring 532. A push rod 534 is fixedly mounted on the right side of the wedge plate 533, which slides through the mounting frame 531 and is used to push the bolt 3. A circular plate 535 is rotatably mounted on the right end of the push rod 534.

[0049] See Figure 3 、 Figure 5 and Figure 6 The extrusion assembly 54 includes an extrusion plate 542 fixedly mounted on the bottom of the jacking frame 414 through a follower frame 541 composed of a U-shaped section and an L-shaped section on the left side of the U-shaped section and used to squeeze the wedge plate 533. While the two positioning plates 513 are positioning the bolt 3, the extrusion plate 542 squeezes the wedge plate 533, driving the push rod 534 to move right, so that the circular plate 535 pushes the bolt 3 into the drive unit 6 for positioning and fixing.

[0050] During specific use, after completing the radial limitation of the bolt 3, the lifting frame 414 continues to move downward, which will drive the extrusion plate 542 to contact and squeeze the inclined surface of the wedge plate 533, and convert the vertical downward displacement into a horizontal rightward thrust of the wedge plate 533. The wedge plate 533 overcomes the pre-tightening force of the return spring 2 532 and moves to the right, driving the circular plate 535 to close to the left end of the bolt 3 through the push rod 534. Then, the push rod 534 continues to push, which will drive the bolt 3 to be pushed axially into the drive unit 6 under the limiting and guiding action of the positioning plate 513, so as to cooperate with the drive unit 6 to position and fix the bolt 3.

[0051] See Figure 2 、 Figure 10 and Figure 11 The driving unit 6 includes a fixing frame 61 fixedly mounted on the top of the workbench 2 and an installation box 62 fixedly mounted in the fixing frame 61. A driving motor 63 is fixedly mounted on the left inner wall of the installation box 62. A socket 64 for inserting the bolt 3 is opened on the left side of the installation box 62. The output shaft of the driving motor 63 extends into the socket 64. Before the chamfering operation, the positioning unit 5 pushes the bolt 3 into the socket 64 and conflicts with the left end of the output shaft of the driving motor 63.

[0052] It should be noted that the contact surfaces between the circular plate 535 and the output end of the drive motor 63 and the bolt 3 are both fixed with polyurethane washers via countersunk screws. Polyurethane has a high coefficient of friction, which allows it to better adhere to the surface of the bolt 3, thereby generating greater friction. This ensures that when the drive motor 63 rotates the bolt 3, it can effectively transmit torque, prevent the bolt 3 from slipping, and ensure the stability and accuracy of the chamfering process.

[0053] See Figure 10 and Figure 11 , a blanking unit 8 is provided in the driving unit 6. After the chamfering operation is completed, when the jacking assembly 41 drives the positioning unit 5 to release the positioning and fixing of the bolt 3, the blanking unit 8 synchronously ejects the bolt 3 that has completed the chamfering operation. The blanking unit 8 includes a mounting cavity 81 opened in the output shaft of the driving motor 63. The inner wall of the opening side of the mounting cavity 81 is fixedly installed with an ejector rod 83 through an energy storage spring 82. The top of the workbench 2 is fixedly installed with a blanking rack 84 located on the rear side of the jacking assembly 41 and used to guide the bolt 3 that has completed the chamfering operation to be rolled and unloaded. When the positioning unit 5 pushes the bolt 3 to be inserted into the socket 64, it will first squeeze the ejector rod 83 and compress the energy storage spring 82. After the chamfering operation is completed, when the positioning unit 5 releases the positioning and fixing of the bolt 3, the energy storage spring 82 is reset and pushes the bolt 3 to be unloaded through the ejector rod 83.

[0054] It should be noted that the inclination angle of the blanking rack 84 is preferably 12°, and the surface is coated with Teflon coating, so that the bolts 3 can automatically roll along the slope of the blanking rack 84 when being blanked without getting stuck.

[0055] During specific use, the push rod 534 will drive the bolt 3 to be pushed axially into the socket 64 under the limiting and guiding action of the positioning plate 513. During the process of inserting the bolt 3 into the socket 64, the ejector rod 83 will be squeezed first and the energy storage spring 82 will be compressed (the compression of the energy storage spring 82 stores power for ejection and blanking for subsequent chamfering operations) and finally the bolt 3 will be pressed against the output end of the drive motor 63, and the bolt 3 will be fixed between the output end of the drive motor 63 and the circular plate 535. Then, the drive motor 63 is started, and the output shaft of the drive motor 63 rotates to drive the bolt 3 and the circular plate 535 to rotate, so that the bolt 3 rotates at high speed, and then the tool holder unit 7 is used to approach and perform chamfering operations on the bolt 3.

[0056] After the chamfering operation is completed, the output shaft of the control motor 425 continues to rotate counterclockwise to drive the toggle plate 421 to toggle the sliding block 426 through the toggle slot 422, driving the lifting frame 414 to continue to move downward to the bottom end of the rear vertical section of the circular slot 424. At this time, the squeezing block 527 disengages from the pressure-bearing member 524, and the squeezing plate 542 disengages from the wedge plate 533, thereby causing the return spring 1 512 to drive the positioning plate 513 to reset, releasing the limit guide of the processed bolt 3. Then, the return spring 2 532 drives the push rod 534 to reset, releasing the tightening of the bolt 3. At the same time, as the push rod 534 releases the tightening of the bolt 3, the energy storage spring 82 releases its elastic potential energy, driving the ejector rod 83 to eject the processed bolt 3 from the insertion hole 64 to the top of the positioning support member 415, and in the ejection process, the reset push rod 534 will limit the distance the bolt 3 is ejected to the left, preventing the bolt 3 from being ejected excessively and falling.

[0057] Then, the sliding block 426 continues to move forward along the lower horizontal section of the circular groove 424 to the connection with the front vertical section, and then continues to slide upward along the front vertical section of the circular groove 424 (at this time, a single bolt 3 loading, positioning, chamfering and ejection and unloading operation is completed), and then, the above operations are repeated continuously to achieve continuous chamfering of the bolt 3.

[0058] Finally, it should be noted that the above embodiments are merely examples for the purpose of illustrating the present invention and are not intended to limit the embodiments. Those skilled in the art will readily appreciate that other variations or modifications based on the above description are possible. It is not necessary and impossible to provide an exhaustive list of all embodiments. However, obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A device for chamfering bolt fasteners, comprising a body (1) and a workbench (2) fixedly mounted on the inner wall of the body (1), wherein the body (1) is provided with an opening that passes through the front and back and is used for feeding and discharging materials, characterized in that: The top of the workbench (2) is provided with a lifting and loading unit (4) for cyclically lifting, translating and placing the bolts (3) to complete the loading operation. The lifting and loading unit (4) includes a support frame (43) fixedly installed on the top of the workbench (2), a lifting assembly (41) arranged between the front and rear inner walls of the support frame (43) and a control assembly (42) for controlling the lifting assembly (41). A driving unit (6) for driving the bolts (3) to rotate is provided on the right side of the lifting and loading unit (4). A driving unit (6) for driving the bolts (3) to rotate is provided on the top of the lifting assembly (41). 3) performing position limiting guidance and pushing the bolt (3) to be inserted into the driving unit (6) to complete the positioning and fixing of the bolt (3); the positioning unit (5) comprises a guiding assembly (51), a traction assembly (52) for pulling the guiding assembly (51), a pushing assembly (53) and an extrusion assembly (54) for controlling the guiding assembly (51); after the driving unit (6) cooperates with the positioning unit (5) to position and fix the bolt (3), it drives the bolt (3) to rotate and perform a chamfering operation; a blanking unit (8) is provided in the driving unit (6); The lifting assembly (41) includes a plurality of X-axis slides (411) mounted on the right inner wall of the support frame (43) for sliding forward and backward, a Z-axis slide (412) mounted on the left side of the X-axis slide (411) for sliding upward and downward, a lifting rod (413) fixedly mounted on the rear side of the plurality of Z-axis slides (412), and a lifting frame (414) mounted on the top ends of the plurality of lifting rods (413), a loading support (416) and a positioning support (415) located on the rear side of the loading support (416) are fixedly mounted on the top of the support frame (43), the loading support (416) is used to support the bolt (3) in the loading process, and the positioning support (415) is used to support the bolt (3) in the positioning and fixing process, and the loading support (416) and the positioning support (415) are both composed of left and right parts; The guide assembly (51) comprises two support plates (511) symmetrically mounted on the front and rear sides of the left half of the positioning support member (415), a positioning plate (513) is fixedly mounted on the adjacent side of the two support plates (511) through a return spring (512), a ball is rotatably mounted on the adjacent side of the two positioning plates (513), and a limiting rod (514) that slides through the support plate (511) is fixedly mounted on the opposite side of the two positioning plates (513). The return spring (512) is fixedly mounted on the adjacent side of the two positioning plates (513). 12) is sleeved on the outside of the limiting rod (514), and the pushing assembly (53) includes a mounting frame (531) fixedly mounted on the top of the support frame (43) and a wedge plate (533) fixedly mounted on the left side of the mounting frame (531) through a second return spring (532), a push rod (534) that slides through the mounting frame (531) and is used to push the bolt (3) is fixedly mounted on the right side of the wedge plate (533), and a circular plate (535) is rotatably mounted on the right end of the push rod (534); The traction assembly (52) comprises a fixed pulley (521) fixedly mounted on the rear side of a support plate (511) located at the front side and a traction rope (522) wound around the outside of the fixed pulley (521); a traction plate (523) is fixedly mounted on the rear end of a limiting rod (514) on the rear side; a pressure piece (524) is fixedly mounted on the front end of a limiting rod (514) on the front side; a connecting plate (526) is fixedly mounted on the rear side of the pressure piece (524) via a connecting rod (525) slidingly penetrating the support plate (511); two ends of the traction rope (522) are fixedly connected to the traction plate (523) and the connecting plate (526) respectively; and an extrusion block (527) for extruding the pressure piece (524) is fixedly mounted on the top of the lifting frame (414) via an L-shaped rod; The extrusion assembly (54) includes an extrusion plate (542) fixedly mounted on the bottom of the lifting frame (414) via a follower frame (541) composed of a U-shaped segment and an L-shaped segment on the left side of the U-shaped segment and used for extruding the wedge plate (533).

2. A bolt fastener chamfering device according to claim 1, characterized in that: A tool holder unit (7) for chamfering the bolts (3) is provided on the top of the workbench (2); the drive unit (6) comprises a fixing frame (61) fixedly mounted on the top of the workbench (2) and an installation box (62) fixedly mounted in the fixing frame (61); a drive motor (63) is fixedly mounted on the left inner wall of the installation box (62); a socket (64) for inserting the bolts (3) is provided on the left side of the installation box (62); and an output shaft of the drive motor (63) extends into the socket (64).

3. The bolt fastener chamfering device according to claim 2, characterized in that: The unloading unit (8) includes a mounting cavity (81) provided in the output shaft of the driving motor (63), an ejector rod (83) being fixedly mounted on the inner wall of the opening side of the mounting cavity (81) via an energy storage spring (82), and a unloading rack (84) located at the rear side of the jacking assembly (41) and used to guide the bolts (3) that have completed the chamfering operation to be rolled and unloaded is fixedly mounted on the top of the workbench (2).

4. The bolt fastener chamfering device according to claim 1, characterized in that: The control assembly (42) comprises a fixed plate (423) fixedly mounted on the inner wall of the bottom of the support frame (43) and connected to the inner wall of the left side of the support frame (43); a toggle plate (421) is rotatably mounted on the right side of the fixed plate (423); a through toggle groove (422) is provided on the right side of the toggle plate (421); a circular groove (424) is provided on the right side of the fixed plate (423); a sliding block (426) is slidably mounted between the circular groove (424) and the toggle groove (422); and a lifting rod (413) is fixedly connected to the sliding block (426).

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