Valve element chamfering machining device

Abstract

The invention discloses a valve element chamfering machining device, and relates to the technical field of chamfering machining, the valve element chamfering machining device comprises a lathe base, a spindle box and a tool rest, the spindle box is fixed to one side of the lathe base, a three-jaw chuck used for clamping a workpiece is arranged on one side of the spindle box, an X-axis moving table is slidably connected to the upper portion of the lathe base, and the X-axis moving table is slidably connected to the lower portion of the lathe base; the upper side of the X-axis moving table is connected with a Y-axis moving table. According to the valve element chamfer machining device, the limiting frame, the magnetic suction plate, the operating mechanism and the clamping mechanism are arranged, the clamping mechanism is promoted to conduct multi-point-position pressing on the circumferential side and the plane portion on a valve clack part of a valve element by clamping the operating mechanism through the three-jaw chuck, and therefore the valve rod part with the small diameter is exposed to stretch out of the three-jaw chuck; the turning tool can conveniently and stably chamfer the end portion of a valve rod of the valve element, then the magnetic suction plate changes the placing state of a valve element workpiece through vertical translation and vertical and horizontal reversing adjustment movement, and therefore the replacement operation of chamfering machining of the valve element can be rapidly completed.

Description

Technical Field

[0001] The invention relates to the technical field of chamfering, in particular to a valve core chamfering device. Background Art

[0002] The raw material of the valve core is usually bar stock. During the production process, the end of the valve stem needs to be chamfered. The chamfering of the valve core can reduce the assembly resistance and improve the sealing performance. In marine valves, the lift check valve automatically opens and closes the valve disc based on the flow of the medium itself. It is used to prevent the backflow of the medium. Its main function is to prevent the backflow of the medium, the reverse rotation of the pump and the drive motor, and the discharge of the container medium. Therefore, the chamfering of the valve core must be done during the processing of the lift check valve, which can improve the use strength and service life of the marine lift check valve.

[0003] According to the Chinese patent with the announcement number CN210412557U, a valve core chamfering processing device is disclosed. By setting a driving assembly and a tool holder, the end surface of the chamfer processed by the tool on the valve core is flat, the molding accuracy of the valve core chamfer is better, and the chamfering operation is also more convenient; In the above technical solution, when the valve core is chamfered, the valve core workpiece of the rod material is inserted into the chuck for clamping. However, for a check valve core with a T-shaped structure, it is difficult for the above technical solution and the prior art to stably clamp the valve disc of the valve core in the chuck, and then chamfer the valve core by turning. This makes it easy for the valve core to become cumbersome and unstable when clamped or replaced by conventional means. Summary of the invention

[0004] The object of the present invention is to provide a valve core chamfering processing device to solve the problems raised by the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a valve core chamfering processing device, comprising a lathe seat, a spindle box and a tool holder, wherein a spindle box is fixed to one side of the lathe seat, a three-jaw chuck for clamping a workpiece is arranged on one side of the spindle box, an X-axis moving table is slidably connected above the lathe seat, a Y-axis moving table is connected to the upper side of the X-axis moving table, and a tool holder for clamping a turning tool is arranged on the upper side of the Y-axis moving table, A limit frame is installed on the top of the spindle box, and a slide groove is provided on the horizontal side surface of the limit frame, and a swing arm movably connected to the limit frame is provided on the upper side of the slide groove, a handle is fixed to one end of the swing arm, and a magnetic suction plate is provided below the swing arm, and offset parallel sliding pins and a lever are fixed at both ends of the top of the magnetic suction plate, and the sliding pin is slidably connected along the slide groove, a strip hole sliding with the lever is provided at the end of the swing arm away from the handle, a U-shaped opening is provided on one side of the magnetic suction plate, and an operating mechanism and a clamping mechanism are provided on the magnetic suction plate. The operating mechanism includes a driving block docked with the U-shaped mouth, one end of the inner side of the driving block is installed with a steering gear through a connecting seat, a fixed frame is provided on one side of the driving block, a cylindrical shaft interlaced with the center of the steering gear is fixed on the outer side of the fixed frame, a Y-shaped guide rail is slidably provided in the middle of the fixed frame, and a center column and a disc are fixed in sequence at one end of the Y-shaped guide rail; the clamping mechanism includes a clamping seat arranged on one side of the driving block and used to clamp the valve core workpiece, and a clamping column and a C-shaped rod that press against the valve core workpiece are provided on the circumferential side of the clamping seat.

[0006] Preferably, a torsion spring is sleeved on the outer side of the rotating end of the swing arm and is respectively connected to the handle and the limit frame.

[0007] Preferably, a corrugated rod meshing with the direction adjustment gear is fixed in the middle of the Y-shaped guide rail, a tightening spring is connected between one end of the corrugated rod and the fixed frame, a sleeve is provided on one end of the center column extending through the fixed frame, and a pushing spring is connected between the sleeve and the fixed frame.

[0008] Preferably, a cam is movably connected to the outer side wall of the sleeve, and a traction arm is connected between the cam and the driving block.

[0009] Preferably, a protrusion is fixed on a side of the outer wall of the sleeve away from the cam, and a rotating shell penetrating the center column is movably sleeved on the outer side of the disc, and the outer wall of the rotating shell is a conical structure.

[0010] Preferably, the inner wall of the rotating shell is provided with a spiral groove sliding with the protrusion, the disc is movably connected to the clamping seat through a rotating shaft, and an extrusion pin is fixed on the horizontal surface of the rotating shell.

[0011] Preferably, an arc-shaped adjustment groove is provided on a side of the clamp seat close to the rotating shell, and the arc-shaped adjustment groove is eccentrically arranged with respect to the circumferential side of the clamp seat.

[0012] Preferably, a movable cavity for rotation of the clamping column is provided on the inner wall of the circumferential side of the clamping seat, a support plate is provided in the middle of the clamping column, and a return spring is connected between the support plate and the inner wall of the movable cavity.

[0013] Preferably, the outer peripheral side surface of the compression column extending out of the active cavity is provided with a flat surface.

[0014] Preferably, a C-shaped rod is slidably connected inside the circumferential side of the clamp seat, and a tension spring is connected between the circumferential side top wall of the clamp seat and the C-shaped rod.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: the valve core chamfering processing device is provided with a limit frame, a magnetic plate, an operating mechanism and a clamping mechanism, and the clamping mechanism is prompted to perform multi-point pressing on the circumferential side and the plane part of the valve disc component of the valve core by clamping the operating mechanism with a three-jaw chuck, thereby exposing a valve stem portion with a smaller diameter to extend the three-jaw chuck, making it convenient for the turning tool to perform stable chamfering on the valve stem end of the valve core, and then the magnetic plate is changed by vertical translation and vertical and horizontal reversing adjustment movements to change the placement state of the valve core workpiece, thereby quickly completing the replacement operation of the valve core chamfering processing.

[0016] 1. The valve core chamfering processing device docks the T-shaped check valve core workpiece in the clamp seat, and drives the magnetic suction plate to produce vertical translation and vertical and horizontal reversing adjustment movements through the operating handle and the swing arm, so that the magnetic suction plate can drive the clamp seat to move by suction, which is convenient for the operating mechanism and the clamping mechanism of the auxiliary clamping valve core workpiece to be quickly assembled or separated from the three-jaw chuck, ensuring that the chamfering processing device can quickly replace the chamfered valve core; 2. The valve core chamfering processing device clamps the driving block through a three-jaw chuck, so that the corrugated rod pulls the center column and the disc through the Y-shaped guide rail. At the same time, the driving block squeezes the sleeve through the traction arm to compress the squeezing spring and drive the rotating shell to deflect the angle, so that the three groups of clamp seats are close to each other and the valve disc edge of the T-shaped valve core is squeezed through the clamping column. At the same time, the straight surface of the circumferential side of the clamping column is used to stably clamp the valve disc edge, and the undercut end of the C-shaped rod is used to clamp the plane of the valve disc to prevent the valve core from falling off from the clamp seat, ensuring that the processing device can stably clamp the valve disc part of the T-shaped valve core, so that the device can stably clamp the valve disc part with a larger diameter, thereby exposing the valve stem part with a smaller diameter for chamfering processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the chamfering processing device of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the magnetic suction plate of the present invention driving the operating mechanism to approach the three-jaw chuck; Figure 3 It is a schematic diagram of a first three-dimensional structure in which the magnetic attraction plate drives the operating mechanism to separate from the three-jaw chuck without contact; Figure 4 It is a schematic diagram of a second three-dimensional structure in which the magnetic attraction plate drives the operating mechanism to separate from the three-jaw chuck without contact; Figure 5 This is a schematic diagram of a three-dimensional structure in which the magnetic suction plate of the present invention drives the operating mechanism to be placed horizontally; Figure 6It is a schematic diagram of a three-dimensional structure in which the magnetic attraction plate of the present invention is placed vertically; Figure 7 It is a schematic diagram of the three-dimensional structure of the magnetic attraction plate of the present invention placed horizontally; Figure 8 It is a schematic diagram of the three-dimensional structure of the linkage between the operating mechanism and the clamping mechanism of the present invention; Fig. 9 It is a schematic diagram of a three-dimensional cross-section structure of the linkage between the operating mechanism and the clamping mechanism of the present invention; Fig.10 It is a schematic diagram of a first three-dimensional explosion structure of the linkage between the operating mechanism and the clamping mechanism of the present invention; Fig.11 A schematic diagram of a second three-dimensional explosion structure of the operating mechanism and the clamping mechanism of the present invention in linkage; Fig.12 It is a schematic diagram of the side cutaway three-dimensional structure of the clamping seat of the present invention; Fig.13 It is a horizontally cut three-dimensional structural schematic diagram of the clamping seat of the present invention; Fig.14 It is a three-dimensional structural schematic diagram of the linkage between the operating mechanism and the clamping mechanism for separating and opening the drive block of the present invention.

[0018] In the figure: 1, lathe seat; 101, X-axis moving platform; 102, Y-axis moving platform; 2, spindle box; 201, three-jaw chuck; 3, tool holder; 4, limit frame; 401, slide groove; 402, swing arm; 403, handle; 404, magnetic plate; 405, slide pin; 406, lever; 5, operating mechanism; 501, drive block; 502, adjustment gear; 503, fixed frame; 504, cylindrical shaft; 505, Y-shaped guide Rail; 506, corrugated rod; 507, tightening spring; 508, pushing spring; 509, center column; 510, disc; 511, sleeve; 512, cam; 513, traction arm; 6, clamping mechanism; 601, rotating shell; 602, spiral groove; 603, extrusion pin; 604, clamping seat; 605, clamping column; 606, reset spring; 607, C-shaped rod; 608, tension spring; 609, arc-shaped adjustment groove. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] See also Figure 1-Figure 14The present invention provides a technical solution: a valve core chamfering processing device, comprising a lathe seat 1, a spindle box 2 and a tool holder 3, the spindle box 2 is fixed to one side of the lathe seat 1, a three-jaw chuck 201 for clamping a workpiece is arranged on one side of the spindle box 2, an X-axis moving table 101 is slidably connected above the lathe seat 1, a Y-axis moving table 102 is connected to the upper side of the X-axis moving table 101, a tool holder 3 for clamping a turning tool is arranged on the upper side of the Y-axis moving table 102, the X-axis moving table 101 will drive the turning tool to feed along the axis direction of the three-jaw chuck 201, and the Y-axis moving table 102 will drive the turning tool to feed perpendicularly to the axis direction of the three-jaw chuck 201; A limit frame 4 is installed on the top of the spindle box 2, and a slide groove 401 is provided on the horizontal side surface of the limit frame 4, and a swing arm 402 movably connected to the limit frame 4 is provided on the upper side of the slide groove 401, a handle 403 is fixed at one end of the swing arm 402, and a magnetic suction plate 404 is provided below the swing arm 402, and offset parallel sliding pins 405 and a lever 406 are fixed at both ends of the top of the magnetic suction plate 404, and the sliding pin 405 is slidably connected along the slide groove 401, and a strip hole sliding with the lever 406 is provided at one end of the swing arm 402 away from the handle 403, and a U-shaped opening is provided on one side of the magnetic suction plate 404, and an operating mechanism 5 and a clamping mechanism 6 are provided on the magnetic suction plate 404, and the operating mechanism 5 includes a driving block 501 docked with the U-shaped opening, and a steering gear 502 is installed at one end of the inner side of the driving block 501 through a connecting seat. A fixed frame 503 is provided on one side of 501, and a cylindrical shaft 504 interlaced with the center of the adjustment gear 502 is fixed on the outer side of the fixed frame 503, and a Y-shaped guide rail 505 is slidably provided in the middle of the fixed frame 503, and a center column 509 and a disk 510 are fixed in sequence at one end of the Y-shaped guide rail 505. The number of driving blocks 501 is set to three, and the driving blocks 501 are distributed at equal angles with respect to the central axis of the center column 509, so that the outer wall of the driving block 501 can be correspondingly abutted with the clamping jaws of the three-jaw chuck 201; the clamping mechanism 6 includes a clamping seat 604 arranged on one side of the driving block 501 and used to clamp the valve core workpiece, and a clamping column 605 and a C-shaped rod 607 that press against the valve core workpiece are arranged on the circumferential side of the clamping seat 604; the outer side of the rotating end of the swing arm 402 is sleeved with a torsion spring respectively connected to the handle 403 and the limit frame 4.

[0021] In specific implementation, the swing arm 402 is driven to rotate by flipping the operating handle 403, so that the swing arm 402 pushes the lever 406 on the magnetic plate 404 through the strip hole, thereby driving the sliding pin 405 at the top of the magnetic plate 404 to move horizontally along the sliding groove 401 on the side of the limit frame 4. When the handle 403 is further flipped, the swing arm 402 will continue to tilt upward to squeeze the lever 406, thereby driving the lever 406 which is not coaxial with the sliding pin 405 to flip upward, ensuring that the swing arm 402 drives the magnetic plate 404 to be placed horizontally. At this time, the T-shaped check valve core workpiece is docked on the clamp The driving block 501 of the operating mechanism 5 is then connected to the U-shaped opening of the magnetic plate 404, so that the magnetic plate 404 attracts and limits the clamping seat 604, and then the handle 403 is gradually released, and the handle 403 is driven to reset by the torsion spring, so that the magnetic plate 404 is reset to be placed vertically and move toward the three-jaw chuck 201; at this time, the driving block 501 is inserted into the three-jaw chuck 201, and the driving block 501 can be squeezed by locking the three-jaw chuck 201, so that the three driving blocks 501 are squeezed by the clamping jaws of the three-jaw chuck 201 and move closer to each other.

[0022] See also Figure 8-Figure 12 and Fig.14 A corrugated rod 506 meshing with the steering gear 502 is fixed in the middle of the Y-shaped guide rail 505, a tightening spring 507 is connected between one end of the corrugated rod 506 and the fixed frame 503, a sleeve 511 is sleeved on one end of the center column 509 extending through the fixed frame 503, and a pushing spring 508 is connected between the sleeve 511 and the fixed frame 503; A cam 512 is movably connected to the outer wall of the sleeve 511, and a traction arm 513 is connected between the cam 512 and the driving block 501; a protrusion is fixed on the outer wall of the sleeve 511 away from the cam 512, and a rotating shell 601 penetrating the center column 509 is movably sleeved on the outer side of the disc 510, and the outer wall of the rotating shell 601 is a conical structure. When the clamping jaws of the three-jaw chuck 201 squeeze the driving block 501 to rotate and close, one end of the driving block 501 will rotate and press against the outer wall conical surface of the rotating shell 601; The inner wall of the rotating shell 601 is provided with a spiral groove 602 that slides with the protrusion. Since the sleeve 511 is restricted by the three traction arms 513 and cannot rotate, the protrusion on the sleeve 511 can drive the rotating shell 601 to rotate back and forth when it moves and pushes along the spiral groove 602. The disk 510 is movably connected to the clamp seat 604 through the rotating shaft, and an extrusion pin 603 is fixed on the horizontal surface of the rotating shell 601; an arc-shaped adjustment groove 609 is provided on the side of the clamp seat 604 close to the rotating shell 601, and the arc-shaped adjustment groove 609 is eccentrically arranged with the circumferential side of the clamp seat 604. When the rotating shell 601 rotates, it will drive the extrusion pin 603 to rotate in a circle, so that the extrusion pin 603 will squeeze the arc-shaped adjustment groove 609 on the surface of the clamp seat 604 in the direction of the circumferential trajectory, so that the clamp seat 604 will deflect around the rotating shaft.

[0023] In specific implementation, when the three driving blocks 501 are brought close to each other, the steering gear 502 will be driven to rotate in the positive direction around the cylindrical shaft 504 of the fixed frame 503. When the steering gear 502 rotates in the positive direction, it will mesh with the corrugated rod 506, so that the corrugated rod 506 will pull the central column 509 and the disk 510 through the Y-shaped guide rail 505. At this time, the Y-shaped guide rail 505 will stretch the tightening spring 507; when the three driving blocks 501 are closed, the cam 512 will be squeezed through the traction arm 513, so that the sleeve 511 The push spring 508 slides along the center column 509 and compresses. At this time, the protrusion on the outer wall of the sleeve 511 will squeeze the spiral groove 602 on the inner wall of the rotating shell 601, causing the rotating shell 601 to produce an angular deflection. When the rotating shell 601 rotates, the extrusion pin 603 will squeeze the arc-shaped adjustment groove 609 on the surface of the clamp seat 604, causing the clamp seat 604 to rotate around the axis of rotation on the horizontal plane of the disc 510. Therefore, the three groups of clamp seats 604 can approach each other and limit the valve disc of the T-shaped valve core on the circumferential side.

[0024] See also Figure 8 , Fig.10 , Fig.12 , Fig.13 The inner wall of the circumferential side of the clamp seat 604 is provided with an active cavity for the clamping column 605 to rotate, a support plate is provided in the middle of the clamping column 605, and a reset spring 606 is connected between the support plate and the inner wall of the active cavity; the outer circumferential side surface of the clamping column 605 extending out of the active cavity is provided with a flat surface, and the clamping column 605 is provided with multiple points inside the circumferential side of the clamp seat 604 to fully clamp the outer edge of the valve disc at multiple points. When the three groups of clamp seats 604 are close to each other, the valve disc edge of the T-shaped valve core will be squeezed by the clamping column 605. When the clamping column 605 continues to press against the edge of the valve disc, it will rotate in the active cavity and squeeze the reset spring 606. At this time, the flat surface of the circumferential side of the clamping column 605 will stably press the edge of the valve disc.

[0025] See also Figure 8 , Fig.10 and Fig.12A C-shaped rod 607 is slidably connected to the inside of the circumferential side of the clamp seat 604, and a tension spring 608 is connected between the circumferential side top wall of the clamp seat 604 and the C-shaped rod 607. A plurality of C-shaped rods 607 are arranged inside the circumferential side of the clamp seat 604, so as to fasten the valve disc plane of the valve core at multiple points.

[0026] In specific implementation, when the clamp seat 604 clamps the valve disc through the clamping column 605, the outer edge of the valve disc will laterally squeeze one end of the C-shaped rod 607, so that the C-shaped rod 607 slides in the clamp seat 604 and clamps the plane of the valve disc through the undercut end of the C-shaped rod 607, so that the tension spring 608 is stretched to prevent the valve core from falling off from the clamp seat 604, ensuring that the processing device can stably clamp the valve disc part of the T-shaped valve core, thereby exposing the valve stem of the valve core for better chamfering processing operation; When the chamfering of the valve stem of the valve core is completed, the clamping of the three-jaw chuck 201 on the driving block 501 is loosened, so that the clamping claws of the three-jaw chuck 201 are separated from the tight contact with the driving block 501. At this time, the resetting contraction of the tightening spring 507 will pull the corrugated rod 506 to mesh with the direction adjustment gear 502, so that the three driving blocks 501 drive the direction adjustment gear 502 to reset and deflect at a small angle around the cylindrical shaft 504. Due to the active connection between the cam 512 and the traction arm 513, When the driving block 501 is restricted by the clamping jaws of the three-jaw chuck 201, the sleeve 511 can have a movable stroke along the central column 509 again. When the squeezing spring 508 is reset to push the sleeve 511 to move into the rotating shell 601, the sleeve 511 will reversely squeeze the spiral groove 602 through the protrusion of the outer wall, so that the rotating shell 601 is reversed, thereby driving the clamping column 605 and the C-shaped rod 607 of the clamp seat 604 to appropriately loosen the clamping of the valve core; When the operating handle 403 is flipped again to drive the bar hole at one end of the swing arm 402 to squeeze the push rod 406, the magnetic attraction plate 404 will move horizontally along the slide groove 401 on the side of the limit frame 4, so that the magnetic attraction plate 404 will laterally pull the clamp seat 604 away from the three-jaw chuck 201. In this process, the tightening spring 507 is reset again to drive the driving block 501 to continue to open outward, and then the rotating shell 601 can drive the clamping column 605 of the clamp seat 604 to continue to move away from the valve disc of the valve core during the reset rotation, and the undercut end of the C-shaped rod 607 will move away from the plane of the valve disc. Therefore, at this time, the valve core workpiece after chamfering can be taken out of the clamp seat 604; when the magnetic attraction plate 404 drives the clamping mechanism 6 to be placed vertically again, the valve core workpiece can be reloaded, and the side wall of the valve disc is squeezed by the end of the C-shaped rod 607 close to the inner side of the clamp seat 604, which can prevent the valve core from loosening and falling off during clamping and placement.

[0027] To sum up, the operating handle 403 drives the magnetic suction plate 404 to change from a horizontal placement to a vertical placement, and finally the driving block 501 of the operating mechanism 5 is inserted into the central channel of the three-jaw chuck 201 through the vertically placed magnetic suction plate 404. The driving block 501 can be squeezed by locking the three-jaw chuck 201, so that the three driving blocks 501 are squeezed by the clamping claws of the three-jaw chuck 201 and move closer to each other, thereby driving the clamping mechanism 6 to clamp the T-shaped check valve core. Afterwards, by adjusting the X-axis moving table 101 and the Y-axis moving table 102 on the lathe seat 1, the tool holder 3 drives the turning tool to move toward the valve stem end of the valve core workpiece. When the spindle box 2 is started to drive the three-jaw chuck 201 to rotate, the moving tool holder 3 will drive the turning tool to chamfer the valve stem end of the valve core to ensure that a smooth transition surface is formed at the valve stem part of the valve core, which can reduce assembly resistance and improve sealing performance. The content not described in detail in this description belongs to the prior art known to professional and technical personnel in this field.

[0028] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A valve core chamfering processing device, comprising a lathe seat (1), a spindle box (2) and a tool holder (3), wherein the spindle box (2) is fixed to one side of the lathe seat (1), a three-jaw chuck (201) for clamping a workpiece is arranged on one side of the spindle box (2), an X-axis moving table (101) is slidably connected to the top of the lathe seat (1), a Y-axis moving table (102) is connected to the upper side of the X-axis moving table (101), and a tool holder (3) for clamping a turning tool is arranged on the upper side of the Y-axis moving table (102), wherein: A limit frame (4) is installed on the top of the spindle box (2), a slide groove (401) is provided on the horizontal side surface of the limit frame (4), and a swing arm (402) movably connected to the limit frame (4) is provided on the upper side of the slide groove (401), a handle (403) is fixed at one end of the swing arm (402), a magnetic plate (404) is provided below the swing arm (402), and offset parallel sliding pins (405) and a lever (406) are fixed at both ends of the top of the magnetic plate (404), and the sliding pin (405) is slidably connected along the slide groove (401), a strip hole that slides with the lever (406) is provided at one end of the swing arm (402) away from the handle (403), and a U-shaped opening is provided on one side of the magnetic plate (404), and an operating mechanism (5) and a clamping mechanism (6) are provided on the magnetic plate (404). ), the operating mechanism (5) comprises a driving block (501) docked with the U-shaped opening, one end of the inner side of the driving block (501) is mounted with a steering gear (502) via a connecting seat, a fixing frame (503) is arranged on one side of the driving block (501), a cylindrical shaft (504) interlaced with the center of the steering gear (502) is fixed on the outer side of the fixing frame (503), a Y-shaped guide rail (505) is slidably arranged in the middle of the fixing frame (503), and a center column (509) and a disc (510) are fixed in sequence at one end of the Y-shaped guide rail (505); the clamping mechanism (6) comprises a clamping seat (604) arranged on one side of the driving block (501) and used for clamping a valve core workpiece, and a pressing column (605) and a C-shaped rod (607) are arranged on the circumferential side of the clamping seat (604) for pressing against the valve core workpiece.

2. A valve core chamfering processing device according to claim 1, characterized in that: The outer side of the rotating end of the swing arm (402) is sleeved with a torsion spring which is respectively connected to the handle (403) and the limiting frame (4).

3. A valve core chamfering processing device according to claim 1, characterized in that: A corrugated rod (506) meshing with the steering gear (502) is fixed in the middle of the Y-shaped guide rail (505); a tightening spring (507) is connected between one end of the corrugated rod (506) and the fixed frame (503); a sleeve (511) is sleeved on one end of the central column (509) extending through the fixed frame (503); and a pushing spring (508) is connected between the sleeve (511) and the fixed frame (503).

4. A valve core chamfering processing device according to claim 3, characterized in that: A cam (512) is movably connected to the outer wall of the sleeve (511), and a traction arm (513) is connected between the cam (512) and the driving block (501).

5. A valve core chamfering processing device according to claim 4, characterized in that: A protrusion is fixed on the outer wall of the sleeve (511) at a side away from the cam (512), and a rotating shell (601) penetrating the central column (509) is movably sleeved on the outer side of the disc (510), and the outer wall of the rotating shell (601) is a conical structure.

6. A valve core chamfering processing device according to claim 5, characterized in that: The inner wall of the rotating shell (601) is provided with a spiral groove (602) that slides with the protrusion. The disc (510) is movably connected to the clamping seat (604) via a rotating shaft. An extrusion pin (603) is fixed on the horizontal surface of the rotating shell (601).

7. A valve core chamfering processing device according to claim 6, characterized in that: An arc-shaped adjustment groove (609) is provided on one side of the clamp seat (604) close to the rotating shell (601), and the arc-shaped adjustment groove (609) and the circumferential side of the clamp seat (604) are eccentrically arranged.

8. A valve core chamfering processing device according to claim 1, characterized in that: The inner wall of the circumferential side of the clamp seat (604) is provided with an active cavity for the compression column (605) to rotate, a support plate is provided in the middle of the compression column (605), and a return spring (606) is connected between the support plate and the inner wall of the active cavity.

9. A valve core chamfering processing device according to claim 8, characterized in that: The outer peripheral side surface of the pressing column (605) extending out of the active cavity is provided with a flat surface.

10. A valve core chamfering processing device according to claim 1 or 8, characterized in that: A C-shaped rod (607) is slidably connected inside the circumferential side of the clamp seat (604), and a tension spring (608) is connected between the circumferential side top wall of the clamp seat (604) and the C-shaped rod (607).

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