An adaptive pipe chamfering device

Abstract

The present invention relates to the technical field of pipe processing equipment, and in particular to an adaptive pipe chamfering device, which aims to solve the technical problem in the related art that the processing efficiency is low and the product quality is reduced due to the reliance on manual adjustment or replacement of cutting tools to adapt to changes in pipe size. The chamfering device comprises: a positioning assembly, a chamfering assembly and a proportional displacement assembly. The positioning assembly comprises a lower pressure plate and an upper pressure plate. The chamfering assembly comprises a rotary unit, and the proportional displacement assembly is respectively connected to the upper pressure plate and the rotary unit in a transmission manner. The chamfering device fixes the moving speed of the upper pressure plate to twice the moving speed of the rotary unit through the proportional displacement assembly, so that the rotating axis of the rotary unit always coincides with the axis of the pipe clamped by the upper and lower pressure plates, thereby realizing automatic adjustment of the chamfering assembly. It overcomes the technical problem of the existing chamfering device that the processing efficiency is low and the product quality is reduced due to the reliance on manual adjustment or replacement of cutting tools to adapt to changes in pipe size.

Description

Technical Field

[0001] The present invention relates to the technical field of pipe processing equipment, and in particular to an adaptive pipe chamfering device. Background Art

[0002] In the field of mechanical processing, chamfering pipes is a critical step in ensuring the precision and quality of their ends. While existing chamfering tools can handle pipes of varying sizes by manually adjusting or replacing the tool, frequent manual adjustments and tool changes not only increase operational complexity and workload, but also increase the risk of human error during repetitive tasks, leading to reduced machining accuracy and production efficiency.

[0003] The existing chamfering device has the technical problem of low processing efficiency and reduced product quality due to reliance on manual adjustment or replacement of tools to adapt to changes in pipe size. Summary of the Invention

[0004] The purpose of the present invention is to provide an adaptive pipe chamfering device to solve the technical problems in the related art of relying on manual adjustment or replacement of tools to adapt to changes in pipe size, resulting in low processing efficiency and reduced product quality.

[0005] In order to solve the above technical problems, the technical solution provided by the present invention is:

[0006] The adaptive pipe chamfering device provided by the present invention comprises:

[0007] Support frame, positioning assembly, chamfering assembly and proportional displacement assembly. The positioning assembly includes a radial clamping unit, and the radial clamping unit includes a lower pressure plate and an upper pressure plate. The lower pressure plate is fixedly mounted on the support frame, and the upper pressure plate and the lower pressure plate move toward each other to compress the pipe. The chamfering assembly includes a rotary unit and a grinding unit. The grinding unit includes a grinding wheel that rotates around its own axis. The rotary unit is used to drive the grinding wheel to rotate around the axis of the pipe to chamfer the pipe. The proportional displacement assembly is mounted on the support frame and is respectively connected to the upper pressure plate and the rotary unit in a transmission manner. The downward movement speed of the upper pressure plate is twice the downward movement speed of the rotary unit.

[0008] Specifically, the proportional displacement assembly includes a first sliding frame, a second sliding frame and a speed regulating transmission unit, and the first sliding frame and the second sliding frame are respectively slidably connected to the support frame. The speed regulating transmission unit includes a first gear, a first rack, a second gear and a second rack with the same module, the first gear is rotatably connected to the support frame, and the second gear is coaxially arranged with the first gear and rotates synchronously. The first rack is mounted on the first sliding frame and meshes with the first gear, and the second rack is mounted on the second sliding frame and meshes with the second gear. The upper pressure plate is mounted on the first sliding frame, and the rotary unit is mounted on the second sliding frame. The number of teeth of the first gear is twice the number of teeth of the second gear, and the moving speed of the upper pressure plate is twice the moving speed of the rotary unit.

[0009] Specifically, it also includes a knife adjustment assembly, which includes an adjustment plate. The rotary unit includes a chamfering motor and a knife bar mounted on the output shaft of the chamfering motor. The grinding unit also includes a knife holder, which is slidably connected to the knife bar, and the knife holder is provided with a positioning block, and the grinding wheel is rotatably connected to the knife holder. In the first state, the adjustment plate is attached to the side of the lower pressure plate away from the pipe, and the knife holder drives the grinding wheel to slide along the knife bar through the contact between the positioning block and the adjustment plate, thereby adjusting the distance between the grinding wheel and the chamfering motor.

[0010] Specifically, the lower pressure plate is composed of two support plates, and is mirror-distributed with the upper pressure plate on the horizontal plane where the chamfering motor output shaft is located, forming an open diamond layout centered on the chamfering motor output shaft. The adjustment plate is provided with a first positioning surface and a second positioning surface that are parallel to each other. In the first state, the first positioning surface is attached to the support plate, and the tool rod is perpendicular to the support plate. The tool holder drives the grinding wheel to slide along the tool rod through the contact between the positioning block and the second positioning surface, thereby changing the arc trajectory radius of the grinding wheel. The normal distance between the first positioning surface and the second positioning surface is used to determine the chamfer depth of the grinding wheel in the direction of the pipe wall thickness.

[0011] Specifically, the chamfering assembly further includes a locking unit comprising a first linear drive member, a pressure block, and a wedge block. The wedge block is provided with an inclined surface that mates with the pressure block. The first linear drive member is mounted on the tool holder and is dynamically connected to the pressure block, for driving the pressure block toward the wedge block. When the first state is switched to the second state, the pressure block, through the compression of the inclined surface, drives the wedge block to press against the tool arbor, thereby locking the tool holder and tool arbor.

[0012] Specifically, the chamfering assembly further includes a feed unit comprising a feed rail, a feed slider, and a second linear drive. The chamfering motor is mounted on the feed slider, which is slidably connected to the feed rail along the axis of the pipe. The feed rail is mounted on the second sliding frame. The second linear drive is dynamically connected to the feed slider and is used to drive the grinding wheel toward the pipe.

[0013] Specifically, the positioning assembly further includes an axial limiting unit, the axial limiting unit including a limiting plate, the limiting plate being mounted on the second sliding frame. In the first state, the limiting plate abuts against the end surface of the pipe to achieve axial limiting of the pipe.

[0014] Specifically, the axial limiting unit further includes a third linear drive member, which is mounted on the second sliding frame and is dynamically connected to the limiting plate. When the first state is switched to the second state, the third linear drive member drives the limiting plate away from the pipe to avoid interfering with the rotation of the knife rod.

[0015] Specifically, the tool adjustment assembly further includes a tool adjustment slide rail and a fourth linear drive member, wherein the adjustment plate is slidably connected to the tool adjustment slide rail and is dynamically connected to the fourth linear drive member. When the first state is switched to the second state, the fourth linear drive member is configured to drive the adjustment plate away from the grinding wheel to prevent interference between the adjustment plate and the grinding wheel.

[0016] Specifically, the grinding unit further includes a grinding motor and a transmission gear set. The grinding motor is mounted on the tool holder and is dynamically connected to the grinding wheel via the transmission gear set, and the transmission gear set is used to avoid interference between the grinding motor and the tool bar.

[0017] Based on the above technical solutions, the beneficial effects of the present invention are analyzed as follows:

[0018] The present invention provides an adaptive pipe chamfering device, comprising:

[0019] Support frame, positioning assembly, chamfering assembly and proportional displacement assembly. The positioning assembly includes a radial clamping unit, and the radial clamping unit includes a lower pressure plate and an upper pressure plate. The lower pressure plate is fixedly mounted on the support frame, and the upper pressure plate and the lower pressure plate move toward each other to compress the pipe. The chamfering assembly includes a rotary unit and a grinding unit. The grinding unit includes a grinding wheel that rotates around its own axis. The rotary unit is used to drive the grinding wheel to rotate around the axis of the pipe to chamfer the pipe. The proportional displacement assembly is mounted on the support frame and is respectively connected to the upper pressure plate and the rotary unit in a transmission manner. The downward movement speed of the upper pressure plate is twice the downward movement speed of the rotary unit.

[0020] In specific applications, the pipe is placed on the lower platen, and the upper platen moves toward the lower platen and abuts against the pipe to clamp it. Simultaneously, the proportional displacement assembly, which is dynamically connected to the upper platen, drives the rotary unit toward the lower platen. Because the upper platen's downward movement speed is twice that of the rotary unit, the rotary unit's rotation axis always coincides with the axis of the pipe clamped by the upper and lower platens. The rotary unit drives the grinding wheel to rotate around the pipe's axis to chamfer the pipe.

[0021] As can be seen, compared to existing technologies, this chamfering device uses the proportional displacement assembly to fix the movement speed of the upper platen at twice the movement speed of the rotary unit, thereby ensuring that the rotation axis of the rotary unit and the axis of the pipe clamped by the upper and lower platens are always aligned, thereby achieving automatic adjustment of the chamfering assembly. This overcomes the technical problem of existing chamfering devices that rely on manual adjustment or replacement of tools to adapt to changes in pipe size, resulting in low processing efficiency and reduced product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 Schematic diagram of the overall structure of the adaptive pipe chamfering device provided by an embodiment of the present invention in the first state Figure 1 ;

[0024] Figure 2 The overall structure of the adaptive pipe chamfering device in the first state is shown in FIG. Figure 2 ;

[0025] Figure 3 The overall structure of the adaptive pipe chamfering device in the first state is shown in FIG. Figure 3 ;

[0026] Figure 4 The overall structure of the adaptive pipe chamfering device in the second state is shown in FIG. Figure 1 ;

[0027] Figure 5 The overall structure of the adaptive pipe chamfering device in the second state is shown in FIG. Figure 2 ;

[0028] Figure 6 The overall structure of the adaptive pipe chamfering device in the second state is shown in FIG. Figure 3 ;

[0029] Figure 7 The structure diagram of the locking unit and the knife adjustment assembly in the first state Figure 1 ;

[0030] Figure 8 The structure diagram of the locking unit and the knife adjustment assembly in the first state Figure 2 ;

[0031] Figure 9 Schematic diagram of the structure of the proportional displacement component.

[0032] icon:

[0033] 001. Pipes;

[0034] 100, support frame; 110, guide rail; 120, roller;

[0035] 200, positioning assembly; 210, radial clamping unit; 211, lower pressure plate; 2111, support plate; 212, upper pressure plate; 220, axial limiting unit; 221, limiting plate; 201, positioning groove; 222, third linear drive member;

[0036] 300, chamfering assembly; 310, rotary unit; 311, chamfering motor; 312, tool bar; 320, grinding unit; 321, grinding wheel; 322, tool holder; 301, positioning block; 323, grinding motor; 324, transmission gear set; 3241, third gear; 3242, fourth gear; 330, locking unit; 331, first linear drive member; 332, pressing block; 333, wedge block; 302, inclined plane; 303, notch; 340, feed unit; 341, feed rail; 342, feed slider; 343, second linear drive member;

[0037] 400, proportional displacement assembly; 410, first sliding frame; 420, second sliding frame; 430, speed control transmission unit; 431, first gear; 432, first rack; 433, second gear; 434, second rack; 440, drive motor;

[0038] 500, knife adjusting assembly; 510, adjustment plate; 501, first positioning surface; 502, second positioning surface; 520, knife adjusting slide rail; 530, fourth linear drive component. DETAILED DESCRIPTION

[0039] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of 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. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0040] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0041] The following embodiments of the present invention are described in detail with reference to the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments may be combined with each other.

[0042] The existing chamfering device has the technical problem of low processing efficiency and reduced product quality due to reliance on manual adjustment or replacement of tools to adapt to changes in pipe size.

[0043] In view of this, the present invention provides an adaptive pipe chamfering device, comprising:

[0044] Support frame 100, positioning assembly 200, chamfering assembly 300 and proportional displacement assembly 400. Positioning assembly 200 includes radial clamping unit 210, radial clamping unit 210 includes lower pressure plate 211 and upper pressure plate 212, lower pressure plate 211 is fixedly mounted on support frame 100, and the upper pressure plate 212 and lower pressure plate 211 move toward each other to compress pipe 001. Chamfering assembly 300 includes rotating unit 310 and grinding unit 320, grinding unit 320 includes grinding wheel 321 that rotates around its own axis, rotating unit 310 is used to drive grinding wheel 321 to rotate around the axis of pipe 001 to chamfer pipe 001. Proportional displacement assembly 400 is mounted on support frame 100 and is respectively connected to upper pressure plate 212 and rotating unit 310 in transmission connection, and the downward movement speed of upper pressure plate 212 is twice that of rotating unit 310.

[0045] In summary of the above technical solutions, the adaptive pipe chamfering device provided by the present invention can achieve the following technical effects:

[0046] This chamfering device uses a proportional displacement assembly 400 to fix the movement speed of the upper platen 212 at twice the movement speed of the rotary unit 310. This ensures that the rotation axis of the rotary unit 310 is always aligned with the axis of the pipe 001 clamped by the upper and lower platens 212 and 211, thereby achieving automatic adjustment of the chamfering assembly 300. This overcomes the technical problem of existing chamfering devices that rely on manual adjustment or tool replacement to adapt to changes in pipe size, resulting in low processing efficiency and reduced product quality.

[0047] The following combination Figures 1 to 9 The structure and shape of the adaptive pipe chamfering device provided in this embodiment are described in detail:

[0048] How does the proportional displacement assembly 400 achieve that the downward movement speed of the upper pressing plate 212 is twice that of the downward movement speed of the rotary unit 310? Specifically:

[0049] The proportional displacement assembly 400 includes a first sliding frame 410, a second sliding frame 420, a speed control transmission unit 430, and a drive motor 440. The support frame 100 is provided with a guide rail 110. The first sliding frame 410 and the second sliding frame 420 are respectively slidably connected to the guide rail 110. The drive motor 440 is in power communication with the speed control transmission unit 430. The speed control transmission unit 430 includes a first gear 431, a first rack 432, a second gear 433, and a second rack 434 of the same module. The first gear 431 is rotationally connected to the support frame 100, and the second gear 433 is coaxially arranged and rotates synchronously with the first gear 431. The first rack 432 is mounted on the first sliding frame 410 and meshes with the first gear 431. The second rack 434 is mounted on the second sliding frame 420 and meshes with the second gear 433. The upper pressure plate 212 is mounted on the first sliding frame 410, and the rotary unit 310 is mounted on the second sliding frame 420. The number of teeth of the first gear 431 is twice that of the second gear 433 , and the moving speed of the upper pressing plate 212 is twice that of the rotating unit 310 .

[0050] To adjust the radius of the grinding wheel's gyration path to match the size of the pipe 001, the adaptive pipe chamfering device in this embodiment further includes a knife adjustment assembly 500, which includes an adjustment plate 510. The rotation unit 310 includes a chamfering motor 311 and a knife bar 312 mounted on the output shaft of the chamfering motor 311. The grinding unit 320 also includes a knife holder 322, which is slidably connected to the knife bar 312. The knife holder 322 is provided with a positioning block 301, and the grinding wheel 321 is rotatably connected to the knife holder 322. In a first state, the adjustment plate 510 is attached to the side of the lower pressure plate 211 away from the pipe 001. The knife holder 322, through the contact between the positioning block 301 and the adjustment plate 510, drives the grinding wheel 321 to slide along the knife bar 312, thereby adjusting the distance between the grinding wheel 321 and the chamfering motor 311 and, consequently, the radius of the grinding wheel's gyration path.

[0051] How does the adjustment plate 510 change the arc trajectory radius of the grinding wheel 321 according to the size of the pipe 001? Specifically:

[0052] The lower pressure plate 211 is composed of two support plates 2111, and is mirrored with the upper pressure plate 212 about the horizontal plane where the output shaft of the chamfering motor 311 is located, forming an open diamond layout centered on the output shaft of the chamfering motor 311. The pipe 001 is tangent to the support plate 2111. The adjustment plate 510 is provided with a first positioning surface 501 and a second positioning surface 502 that are parallel to each other. In the first state, the first positioning surface 501 is attached to the support plate 2111, and the tool rod 312 is perpendicular to the support plate 2111. The tool holder 322 drives the grinding wheel 321 to slide along the tool rod 312 through the contact between the positioning block 301 and the second positioning surface 502, thereby changing the arc trajectory radius of the grinding wheel 321. The normal distance between the first positioning surface 501 and the second positioning surface 502 is used to determine the chamfer depth of the grinding wheel 321 in the wall thickness direction of the pipe 001.

[0053] In order to keep the radius of the arc trajectory of the grinding wheel 321 fixed during the chamfering operation, in the solution of this embodiment, the chamfering assembly 300 also includes a locking unit 330, which includes a first linear drive member 331, a clamping block 332 and a wedge block 333. The wedge block 333 is provided with an inclined surface 302 that cooperates with the clamping block 332. The first linear drive member 331 is installed on the tool holder 322 and is connected to the clamping block 332 by power, and is used to drive the clamping block 332 to move toward the wedge block 333. When the first state is switched to the second state, the clamping block 332 drives the wedge block 333 to press the tool rod 312 through the squeezing of the inclined surface 302, thereby achieving locking between the tool holder 322 and the tool rod 312. Among them, the wedge block 333 is also provided with a notch 303, which is used to avoid the first linear drive member 331.

[0054] In this embodiment, the chamfering assembly 300 further includes a feed unit 340, which comprises a feed rail 341, a feed slider 342, and a second linear drive 343. The chamfering motor 311 is mounted on the feed slider 342, which is slidably connected to the feed rail 341 along the axis of the pipe 001. The feed rail 341 is mounted on the second sliding frame 420. The second linear drive 343 is power-coupled to the feed slider 342 to drive the grinding wheel 321 toward the pipe 001.

[0055] To achieve axial positioning of the tube 001, in this embodiment, the positioning assembly 200 further includes an axial positioning unit 220, which includes a positioning plate 221 mounted on the second sliding frame 420. The positioning plate 221 is also provided with a positioning slot 201. In the first state, the positioning plate 221 abuts against the end face of the tube 001 to achieve axial positioning of the tube 001. The positioning slot 201 is used to avoid the cutter bar 312. The abutment between the sidewall of the positioning slot 201 and the cutter bar 312 guides the cutter bar 312, thereby ensuring that the cutter bar 312 is perpendicular to the support plate 2111.

[0056] To prevent interference between the limiting plate 221 and the rotation of the tool rod 312 during the chamfering operation, in this embodiment, the axial limiting unit 220 further includes a third linear drive 222, which is mounted on the second sliding frame 420 and is dynamically connected to the limiting plate 221. When the first state is switched to the second state, the third linear drive 222 drives the limiting plate 221 away from the pipe 001 to prevent interference with the rotation of the tool rod 312.

[0057] To prevent interference between the adjustment plate 510 and the grinding wheel 321 during the chamfering operation, the blade adjustment assembly 500 of this embodiment further includes a blade adjustment slide 520 and a fourth linear drive 530. The adjustment plate 510 is slidably connected to the blade adjustment slide 520 and is power-connected to the fourth linear drive 530. When the first state is switched to the second state, the fourth linear drive 530 is used to drive the adjustment plate 510 away from the grinding wheel 321 to prevent interference between the adjustment plate 510 and the grinding wheel 321.

[0058] In the solution of this embodiment, the grinding unit 320 also includes a grinding motor 323 and a transmission gear set 324. The transmission gear set 324 includes a third gear 3241 and a fourth gear 3242. The third gear 3241 is coaxially arranged with the grinding wheel 321. The grinding motor 323 is mounted on the tool holder 322. The fourth gear 3242 is mounted on the output end of the grinding motor 323 and meshes with the third gear 3241. The grinding motor 323 is connected to the grinding wheel 321 through the meshing of the fourth gear 3242 and the third gear 3241. The transmission gear set 324 is used to prevent interference between the grinding motor 323 and the tool rod 312.

[0059] In the solution of this embodiment, the support frame 100 is also provided with a roller 120, which has a V-shaped groove. The V-shaped groove is aligned with the lower pressure plate 211 in the axial direction of the tube 001, and is used to support the tube 001 and facilitate the movement of the tube 001 along its own axial direction.

[0060] In summary, the specific working process of the adaptive pipe chamfering device provided in this embodiment is as follows:

[0061] Take the initial state as the first state as an example. The pipe 001 is placed on the lower pressure plate 211 and pushed along the axial direction until it abuts against the limit plate 221. The driving motor 440 drives the first gear 431 and the second gear 433 to rotate and drives the first sliding frame 410 and the second sliding frame 420 to slide in the direction of the lower pressure plate 211 through the first rack 432 and the second rack 434 respectively. During the movement of the rotary unit 310 to the lower pressure plate 211, since the tool rod 312 is perpendicular to the support plate 2111, the pipe 001 is tangent to the support plate 2111, and the tool holder 322 drives the grinding wheel 321 to slide along the tool rod 312 toward the chamfering motor 311 through the abutment of the positioning block 301 and the second positioning surface 502 to adapt to the size of the pipe 001 clamped by the upper pressure plate 212 and the lower pressure plate 211.

[0062] When switching from the first state to the second state, the first linear drive 331 drives the pressing block 332, which, through the compression of the inclined surface 302, drives the wedge block 333 to press the tool rod 312, locking the tool holder 322 and the tool rod 312. The third linear drive 222 drives the limit plate 221 away from the pipe 001, and the fourth linear drive 530 drives the adjustment plate 510 away from the grinding wheel 321 to avoid interfering with the rotation of the tool rod 312.

[0063] The grinding motor 323 drives the grinding wheel 321 to rotate about its own axis via the transmission gear set 324. The chamfering motor 311 drives the grinding wheel 321 to rotate about the axis of the pipe 001 via the cutter bar 312. The second linear drive 343 drives the feed slider 342 to slide along the feed rail 341, driving the chamfering motor 311 toward the pipe 001, thereby driving the grinding wheel 321 to chamfer the pipe 001.

[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An adaptive pipe chamfering device, characterized in that: include: A support frame (100), a positioning assembly (200), a chamfering assembly (300), a proportional displacement assembly (400) and a tool adjustment assembly (500); The positioning assembly (200) includes a radial clamping unit (210), the radial clamping unit (210) includes a lower pressing plate (211) and an upper pressing plate (212), the lower pressing plate (211) is fixedly mounted on the support frame (100), and the upper pressing plate (212) and the lower pressing plate (211) move toward each other to compress the pipe (001); The chamfering assembly (300) comprises a rotating unit (310), a grinding unit (320), and a feed unit (340); the grinding unit (320) comprises a grinding wheel (321) that rotates about its own axis; the rotating unit (310) is used to drive the grinding wheel (321) to rotate about the axis of the pipe (001) to chamfer the pipe (001); The proportional displacement assembly (400) is mounted on the support frame (100) and is respectively connected to the upper pressing plate (212) and the rotary unit (310) in a transmission manner, and the downward movement speed of the upper pressing plate (212) is twice the downward movement speed of the rotary unit (310); The knife adjustment assembly (500) comprises an adjustment plate (510); The rotary unit (310) comprises a chamfering motor (311) and a tool rod (312) mounted on an output shaft of the chamfering motor (311); The grinding unit (320) further comprises a tool holder (322), the tool holder (322) being slidably connected to the tool rod (312), the tool holder (322) being provided with a positioning block (301), and the grinding wheel (321) being rotatably connected to the tool holder (322); In the first state, the adjustment plate (510) is attached to the side of the lower pressure plate (211) away from the pipe (001), and the tool holder (322) drives the grinding wheel (321) to slide along the tool rod (312) through the contact between the positioning block (301) and the adjustment plate (510), thereby adjusting the distance between the grinding wheel (321) and the chamfering motor (311), and further changing the arc trajectory radius of the grinding wheel (321).

2. The chamfering device according to claim 1, characterized in that: The proportional displacement assembly (400) comprises a first sliding frame (410), a second sliding frame (420) and a speed regulating transmission unit (430), wherein the first sliding frame (410) and the second sliding frame (420) are respectively slidably connected to the support frame (100); The speed regulating transmission unit (430) comprises a first gear (431), a first rack (432), a second gear (433) and a second rack (434) having the same module, wherein the first gear (431) is rotatably connected to the support frame (100), and the second gear (433) is coaxially arranged with the first gear (431) and rotates synchronously. The first rack (432) is mounted on the first sliding frame (410) and meshes with the first gear (431), and the second rack (434) is mounted on the second sliding frame (420) and meshes with the second gear (433); The upper pressing plate (212) is mounted on the first sliding frame (410), and the rotary unit (310) is mounted on the second sliding frame (420); The number of teeth of the first gear (431) is twice the number of teeth of the second gear (433), and the moving speed of the upper pressing plate (212) is twice the moving speed of the rotary unit (310).

3. The chamfering device according to claim 1, characterized in that: The lower pressing plate (211) is composed of two supporting plates (2111) and is mirror-distributed with the upper pressing plate (212) about the horizontal plane where the output shaft of the chamfering motor (311) is located, forming an open diamond layout centered on the output shaft of the chamfering motor (311); The adjustment plate (510) is provided with a first positioning surface (501) and a second positioning surface (502) that are parallel to each other; In a first state, the first positioning surface (501) is in contact with the support plate (2111), the tool rod (312) is perpendicular to the support plate (2111), and the tool holder (322) drives the grinding wheel (321) to slide along the tool rod (312) through the contact between the positioning block (301) and the second positioning surface (502), thereby changing the arc trajectory radius of the grinding wheel (321); The normal distance between the first positioning surface (501) and the second positioning surface (502) is used to determine the chamfer depth of the grinding wheel (321) in the wall thickness direction of the pipe (001).

4. The chamfering device according to claim 2, characterized in that: The chamfering assembly (300) further comprises a locking unit (330), the locking unit (330) comprising a first linear drive member (331), a pressing block (332) and a wedge block (333), the wedge block (333) being provided with an inclined surface (302) cooperating with the pressing block (332); The first linear drive member (331) is mounted on the tool holder (322) and is connected to the pressing block (332) by power, and is used to drive the pressing block (332) to move toward the wedge block (333); When the first state is switched to the second state, the pressing block (332) drives the wedge block (333) to press the knife rod (312) by squeezing the inclined surface (302), thereby achieving locking between the knife holder (322) and the knife rod (312).

5. The chamfering device according to claim 4, characterized in that: The feed unit (340) comprises a feed rail (341), a feed slider (342) and a second linear drive member (343); The chamfering motor (311) is mounted on the feed slider (342), the feed slider (342) is slidably connected to the feed rail (341) along the axial direction of the pipe (001), and the feed rail (341) is mounted on the second sliding frame (420); The second linear drive member (343) is dynamically connected to the feed slider (342) and is used to drive the grinding wheel (321) to approach the pipe (001).

6. The chamfering device according to claim 2, characterized in that: The positioning assembly (200) further includes an axial limiting unit (220), the axial limiting unit (220) includes a limiting plate (221), and the limiting plate (221) is mounted on the second sliding frame (420); In the first state, the limiting plate (221) achieves axial limiting of the pipe (001) by abutting against the end surface of the pipe (001).

7. The chamfering device according to claim 6, characterized in that: The axial limiting unit (220) further includes a third linear driving member (222), wherein the third linear driving member (222) is mounted on the second sliding frame (420) and is dynamically connected to the limiting plate (221); When the first state switches to the second state, the third linear drive member (222) drives the limit plate (221) away from the pipe (001) to avoid interference with the rotation of the knife rod (312).

8. The chamfering device according to claim 1, characterized in that: The knife adjusting assembly (500) further comprises a knife adjusting slide rail (520) and a fourth linear drive member (530), wherein the adjustment plate (510) is slidably connected to the knife adjusting slide rail (520) and is dynamically connected to the fourth linear drive member (530); When the first state is switched to the second state, the fourth linear drive member (530) is used to drive the adjustment plate (510) away from the grinding wheel (321) to avoid interference between the adjustment plate (510) and the grinding wheel (321).

9. The chamfering device according to claim 1, characterized in that: The grinding unit (320) further includes a grinding motor (323) and a transmission gear set (324); The grinding motor (323) is mounted on the tool holder (322) and is connected to the grinding wheel (321) via the transmission gear set (324). The transmission gear set (324) is used to avoid interference between the grinding motor (323) and the tool rod (312).

Images