Polishing device for metal pipe fitting machining

Abstract

The invention discloses a polishing device for metal pipe fitting machining, and belongs to the field of metal pipe fitting machining. The polishing device comprises a base, a supporting plate arranged on the base and a polishing mechanism arranged on the supporting plate; the grinding mechanism comprises a rotating rod rotationally installed at the top of the supporting plate in a penetrating mode, a triangular frame fixedly connected to the front end of the rotating rod, a sliding block arranged on the triangular frame, and two grinding knives symmetrically and fixedly installed on the front side of the sliding block and used for grinding the ends of the metal pipe fitting. The chamfering cutter is fixedly installed in the middle of the front side of the sliding block and used for chamfering the outer side of the end of the metal pipe fitting, the first motor is fixedly installed on the supporting plate, and the output end of the first motor is fixedly connected with the rear end of the rotating rod. Through the integrated design of the grinding knife and the chamfering knife, the limitation that traditional grinding deburring and chamfering are carried out separately is broken through, two core machining can be completed without process conversion, the operation steps are reduced, the single machining period is shortened, and the requirement for large-scale batch production is particularly met.

Description

Technical Field

[0001] This application relates to the field of metal pipe processing technology, specifically a grinding device for machining metal pipes. Background Technology

[0002] In numerous industrial sectors such as petrochemicals, water conservancy projects, machinery manufacturing, and building pipelines, metal pipe fittings serve as core components for fluid transport and structural connections, with extremely wide applications and huge demand. Before actual application, metal pipe fittings typically require cutting the raw material to a fixed length using mature cutting processes such as sawing, laser cutting, and plasma cutting, according to specific assembly size requirements. However, during the cutting process, factors such as tool wear, fluctuations in cutting parameters, or thermal processing effects can easily cause irregular burrs, flash, and sharp edges to form at the cut ends of metal pipe fittings, while the end faces may also exhibit flatness deviations.

[0003] These port defects can severely impact the subsequent assembly and use of metal pipe fittings. On the one hand, if burrs and flash are not removed, they may damage seals during pipe connection, leading to fluid leaks, especially in high-pressure transmission scenarios, and could even cause safety accidents. On the other hand, sharp port edges not only pose safety hazards to operators but also hinder precise positioning during pipe docking, reducing assembly accuracy. Therefore, cut metal pipe fittings must undergo port treatment to meet the surface quality and assembly performance requirements of industrial applications.

[0004] Currently, the processing of metal pipe fitting ends in the industry mainly includes two core steps: grinding and deburring, and chamfering. These two processes are generally performed separately. In the grinding and deburring stage, mainstream technologies rely on semi-automatic grinding machines or manual hand-held grinding wheels to remove burrs and flash through physical grinding, a relatively cumbersome process. In the chamfering process, the deburred metal pipe fitting is usually transferred to a dedicated chamfering machine, where a rotating cutter performs a 45° cut to create a smooth transition edge.

[0005] The transition between the above processes requires additional time for pipe transfer and positioning adjustment. Furthermore, tooling fixtures need to be installed and calibrated separately for each processing step, resulting in a significant extension of the single processing cycle and making it difficult to meet the efficiency requirements of large-scale mass production. Secondly, the positioning reference of the pipe may deviate during the two processing steps, which can easily lead to problems such as insufficient accuracy of the chamfered dimensions at the ends and uneven surface roughness after grinding, affecting the consistency of product quality. In addition, separate processing requires two independent sets of equipment, namely a grinding machine and a chamfering machine, which not only increases the cost of equipment procurement and maintenance but also occupies more production workshop space, which is not conducive to the optimization and integration of the production process.

[0006] Therefore, this application provides a grinding device for machining metal pipe fittings to solve the above-mentioned problems. Summary of the Invention

[0007] This application provides a grinding device for machining metal pipe fittings, which aims to solve the problems mentioned in the background art, such as the need to separate the deburring and chamfering processes of the cut ends of existing metal pipe fittings, the long processing cycle and low efficiency, the easy deviation of the positioning reference between the two processing steps leading to poor product quality consistency, and the need to equip two independent sets of equipment, which increases costs and space occupation.

[0008] To achieve the above objectives, this application provides the following technical solution: a grinding device for machining metal pipe fittings, comprising a base, a support plate disposed on the base, and a grinding mechanism disposed on the support plate; further comprising a clamping mechanism disposed on the base for clamping and fixing the metal pipe fittings; the base is provided with a driving member for driving the support plate to move closer to or away from the clamping mechanism; the grinding mechanism comprises a rotating rod rotatably mounted through the top of the support plate, a tripod fixedly connected to the front end of the rotating rod, a slider disposed on the triangle of the tripod, two grinding blades symmetrically fixedly mounted on the front side of the slider for grinding the ends of the metal pipe fittings, a chamfering blade fixedly mounted on the middle of the front side of the slider for chamfering the outer side of the ends of the metal pipe fittings, and a first motor fixedly mounted on the support plate, the output end of the first motor being fixedly connected to the rear end of the rotating rod. When grinding metal pipe fittings, the clamping mechanism fixes the fitting in position, ensuring stability. Then, the first motor starts, its output driving a rotating rod to rotate synchronously. The triangular bracket fixed to the front of the rotating rod rotates with the rod, causing the grinding and chamfering cutters on the slider at the triangular part of the bracket to rotate synchronously, providing power for processing. Next, the drive unit moves the support plate towards the grinding mechanism, bringing the chamfering cutter into contact with the outer wall of the fitting. Because the chamfering cutter is inclined, it first chamfers the end of the fitting. As the support plate continues to move, the grinding cutter grinds the end of the fitting. This achieves simultaneous chamfering and deburring of the metal pipe fitting, realizing integrated continuous processing of "chamfering-grinding".

[0009] Preferably, to reduce wear on the rotating rod, the rotating rod is connected to the support plate via a bearing. The bearing, as a rolling friction component, can replace the sliding friction between the rotating rod and the support plate, significantly reducing the coefficient of friction during relative rotation. This prevents wear and deformation of the rotating rod due to long-term sliding friction, reducing the frequency of rod replacement and maintenance costs.

[0010] Preferably, the chamfering cutter is located at one end of the slider away from the center of the tripod. Positioning the chamfering cutter away from the center of the tripod allows for greater machining space. When the slider position is adjusted via the adjustment mechanism to accommodate pipes of different diameters, the chamfering cutter maintains a reasonable initial contact position with the outer wall of the pipe, completing the chamfering without additional tool angle adjustments, thus improving the device's adaptability to pipes of different specifications.

[0011] Preferably, the clamping mechanism includes a frame fixedly mounted on the base and two opposing lifting plates disposed within the frame. V-shaped clamps are fixedly connected to opposite ends of each of the two lifting plates. Two bidirectional screws are symmetrically rotatably mounted within the frame. The same side of each of the two lifting plates is threadedly connected to both ends of the bidirectional screws. The bottom of each bidirectional screw penetrates the frame and is fixedly fitted with a synchronous gear. Synchronous toothed belts meshing with the two synchronous gears are fitted onto their outer sides. A second motor is fixedly mounted on the upper end of the frame. The upper end of one of the bidirectional screws penetrates the frame and is fixedly connected to the output end of the second motor. The midpoint between the two V-shaped clamps is located on the axis of the rotating rod. Through the cooperation of the synchronous gears and synchronous toothed belts, the two bidirectional screws rotate synchronously, driving the two lifting plates and V-shaped clamps to move towards each other, ensuring that the pipe is always clamped at the midpoint of the two V-shaped clamps; and this midpoint is aligned with the axis of the rotating rod, preventing the pipe from deviating from the machining center of the grinding mechanism and improving the accuracy of grinding and chamfering. The V-shaped structure of the V-shaped clamp can automatically adapt to round metal fittings of different diameters. It forms a stable clamping and positioning through two-point contact. Compared with flat clamps, it can better fit the outer wall of the fitting and prevent the fitting from rotating or shifting during processing.

[0012] Preferably, to reduce wear on the outer wall of the metal pipe fitting caused by the V-shaped clamp, an anti-wear pad, such as a copper pad or a rubber pad, is fixedly connected to the inner side of the V-shaped clamp. The anti-wear pad is made of soft and wear-resistant copper or rubber material, which can replace the V-shaped clamp (metal material) in direct contact with the outer wall of the pipe fitting, avoiding scratches, indentations and other damage to the outer wall of the pipe fitting caused by rigid collision or friction between metals during clamping. It is especially suitable for processing metal pipe fittings with high surface precision requirements.

[0013] Preferably, to improve the friction between the anti-wear pad and the metal pipe, the outer surface of the anti-wear pad is provided with anti-slip textures, such as cross-hatching or serrated patterns. These anti-slip textures increase the contact area and frictional resistance between the anti-wear pad and the outer wall of the pipe, preventing axial or circumferential sliding of the pipe due to rotational cutting forces during high-speed grinding. This ensures the pipe maintains a stable clamping position and improves processing accuracy.

[0014] Preferably, the driving component includes a guide frame sleeved on the bottom of the support plate and fixedly connected to the base, a guide rod slidably inserted into the support plate through a circular hole and fixedly connected to the guide frame, and a first screw threaded into the support plate through a screw hole and rotatably connected to the guide frame. The end of the first screw away from the clamping mechanism passes through the guide frame and is fixedly connected to a handle. Through the threaded transmission of the first screw, the rotational motion of the handle can be converted into the linear movement of the support plate. The threaded transmission has self-locking and high-precision characteristics, which can accurately control the feed distance of the grinding mechanism to the pipe, avoid uneven feed caused by manual pushing, and ensure consistent chamfer depth and grinding degree.

[0015] Preferably, to facilitate end grinding of metal pipes of different diameters, an adjustment mechanism is also included. This mechanism includes a guide groove formed on the triangular side of the tripod and a guide block slidably disposed within the guide groove and fixedly connected to the slider. A second screw is rotatably mounted within the guide groove, and the guide block is threaded onto the second screw. A cavity is formed in the middle of the tripod. The inner end of the second screw extends into the cavity and is fixedly connected to a driven bevel gear. A driving bevel gear, meshing with the driven bevel gear, is rotatably disposed in the middle of the cavity. The front shaft of the driving bevel gear passes through the tripod and has a hexagonal groove. The adjustment mechanism can quickly adapt to the end grinding requirements of metal pipes of different diameters by simultaneously adjusting the positions of the three sliders. It offers high adjustment accuracy, simple operation, and ensures the symmetry and consistency of grinding and chamfering.

[0016] Preferably, a scale plate is fixedly connected to both sides of the tripod, and the scale on the scale plate starts from the center of the tripod. The scale plate directly reflects the distance from the slider to the center of the tripod. The operator can quickly determine the adjustment position of the slider according to the diameter of the pipe without using measuring tools, reducing the measurement steps in the adjustment process and improving the efficiency of adapting to different pipes.

[0017] This application breaks through the limitation of traditional separate grinding and deburring processes by integrating the grinding and chamfering tools. Both core processes can be completed without process switching, reducing operation steps and shortening the single processing cycle, making it particularly suitable for large-scale mass production needs. The grinding and chamfering tools rotate synchronously on the same tripod and move stably along the axis of the rotating rod, avoiding the problems of uneven chamfering dimensions and inconsistent grinding roughness caused by positioning datum deviations in traditional two-step processing, thus improving the uniformity of the processing quality of metal pipe fitting ends.

[0018] This application utilizes the cooperation of synchronous gears and synchronous toothed belts to enable two bidirectional screws to rotate synchronously, driving two lifting plates and V-shaped clamps to move in opposite directions. This ensures that the pipe fitting is always clamped at the midpoint of the two V-shaped clamps; and this midpoint is aligned with the axis of the rotating rod, preventing the pipe fitting from deviating from the machining center of the grinding mechanism and improving the accuracy of grinding and chamfering. The V-shaped structure of the V-shaped clamps can automatically adapt to circular metal pipe fittings of different diameters, forming a stable clamping and positioning through two-point contact. Compared with flat clamps, it can better fit the outer wall of the pipe fitting, preventing the pipe fitting from rotating or shifting during processing.

[0019] This application uses the threaded transmission of the first screw to convert the rotational motion of the handle into the linear movement of the support plate. The threaded transmission has self-locking and high-precision characteristics, which can accurately control the feed distance of the grinding mechanism to the pipe, avoid uneven feed caused by manual pushing, and ensure that the chamfer depth and grinding degree are consistent.

[0020] The adjustment mechanism of this application can quickly adapt to the end grinding requirements of metal pipe fittings of different diameters by simultaneously adjusting the positions of three sliders. It has high adjustment accuracy, is easy to operate, and can ensure the symmetry and consistency of grinding and chamfering.

[0021] The scale of this application directly reflects the distance from the slider to the center of the tripod. Operators can quickly determine the adjustment position of the slider based on the pipe diameter without having to measure it separately with measuring tools, reducing measurement steps in the adjustment process and improving the efficiency of adapting to different pipes. Attached Figure Description

[0022] Figure 1 A schematic diagram of a grinding device for machining metal pipe fittings; Figure 2 This is a schematic diagram of the grinding mechanism; Figure 3 This is a schematic diagram of the shape and structure of the guide block; Figure 4 This is a schematic diagram of the meshing structure of the driven bevel gear and the driving bevel gear; Figure 5 This is a schematic diagram of the clamping mechanism. Figure 6 This is a schematic diagram of the drive component.

[0023] In the picture: 1. Base; 2. Support plate; 3. Grinding mechanism; 31. Rotating rod; 32. Tripod; 33. Slider; 34. Grinding tool; 35. Chamfering tool; 36. First motor; 4. Clamping mechanism; 41. Frame; 42. Lifting plate; 43. V-shaped clamping plate; 43. Anti-wear pad; 44. Bidirectional screw; 45. Synchronous gear; 46. Synchronous toothed belt; 47. Second motor; 5. Drive component; 51. Guide frame; 52. Guide rod; 53. First screw; 54. Handle; 6. Adjustment mechanism; 61. Guide groove; 62. Guide block; 63. Second screw; 64. Driven bevel gear; 65. Driving bevel gear; 66. Hexagonal groove; 67. Scale plate. Detailed Implementation

[0024] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0025] Example 1 This embodiment provides a grinding device for machining metal pipe fittings, such as... Figure 1-6As shown, the grinding device includes a base 1, a support plate 2 mounted on the base 1, and a grinding mechanism 3 mounted on the support plate 2; it also includes a clamping mechanism 4 mounted on the base 1 for clamping and fixing metal pipe fittings; a driving component 5 is provided on the base 1 for driving the support plate 2 to move closer to or away from the clamping mechanism 4; the grinding mechanism 3 includes a rotating rod 31 that is rotatably mounted through the top of the support plate 2, a tripod 32 fixedly connected to the front end of the rotating rod 31, a slider 33 mounted on the triangle of the tripod 32, two grinding blades 34 symmetrically fixedly mounted on the front side of the slider 33 for grinding the ends of metal pipe fittings, a chamfering blade 35 fixedly mounted on the middle of the front side of the slider 33 for chamfering the outer side of the end of the metal pipe fitting, and a first motor 36 fixedly mounted on the support plate 2, the output end of the first motor 36 being fixedly connected to the rear end of the rotating rod 31. The integrated design of the grinding tool 34 and the chamfering tool 35 breaks the limitation of traditional separate grinding and deburring processes. Both core processes can be completed without process switching, reducing operation steps and shortening the single processing cycle, making it particularly suitable for large-scale mass production needs. The grinding tool 34 and the chamfering tool 35 rotate synchronously based on the same tripod 32 and move stably along the axis of the rotating rod 31, avoiding the problems of uneven chamfering dimensions and inconsistent grinding roughness caused by positioning datum deviations in traditional two-step processing, thus improving the uniformity of the processing quality of metal pipe fitting ends. When grinding metal pipe fittings is required, the clamping mechanism 4 fixes the position of the metal pipe fitting to ensure its stability. Then, after the first motor 36 starts, its output end drives the rotating rod 31 to rotate synchronously. The triangular frame 32 fixed at the front end of the rotating rod 31 rotates together with the rotating rod 31, thereby driving the grinding cutter 34 and chamfering cutter 35 on the slider 33 at the triangle of the triangular frame 32 to rotate synchronously, providing power for processing. Then, the drive component 5 drives the support plate 2 to move the grinding mechanism 3 closer to the metal pipe fitting. The chamfering cutter 35 first contacts the outer wall of the metal pipe fitting. Since the chamfering cutter 35 is in an inclined state, it first chamfers the end of the metal pipe fitting. As the support plate 2 continues to move, the grinding cutter 34 grinds the end of the metal pipe fitting. This achieves simultaneous chamfering and grinding of the metal pipe fitting, realizing integrated continuous processing of "chamfering-grinding".

[0026] To reduce wear on the rotating rod 31, it is connected to the support plate 2 via a bearing. The bearing, as a rolling friction component, replaces the sliding friction between the rotating rod 31 and the support plate 2, significantly reducing the coefficient of friction during relative rotation. This prevents wear and deformation of the rotating rod 31 due to long-term sliding friction, reducing the replacement frequency and maintenance costs. The rotating rod 31 is rotatably mounted on the top of the support plate 2 via the bearing. The inner ring of the bearing is fixedly connected to the outer wall of the rotating rod 31, and the outer ring is fixedly connected to the inner wall of the mounting hole in the support plate 2. When the first motor 36 drives the rotating rod 31 to rotate, the rotating rod 31 drives the inner ring of the bearing to rotate synchronously, while the outer ring remains stationary. Low-friction relative rotation is achieved through the rolling elements (balls or rollers) between the inner and outer rings, reducing direct friction between the rotating rod 31 and the support plate 2. Simultaneously, the structural characteristics of the bearing limit the radial and axial displacement of the rotating rod 31, ensuring rotational stability.

[0027] The chamfering cutter 35 is located at the end of the slider 33 furthest from the center of the tripod 32. This distance from the center of the tripod 32 allows for greater machining space. When the slider 33 is adjusted via the adjusting mechanism 6 to accommodate pipes of different diameters, the chamfering cutter 35 maintains a reasonable initial contact position with the outer wall of the pipe, completing the chamfering without additional tool angle adjustments, thus enhancing the device's adaptability to different pipe specifications. When the drive unit 5 moves the support plate 2 towards the clamping mechanism 4, because the chamfering cutter 35 is positioned further outward, its tip will contact the outer wall of the metal pipe before the grinding tool 34. Furthermore, because the chamfering cutter 35 is inclined, after contact, it rotates with the tripod 32 to chamfer the outer end of the metal pipe, laying the foundation for the subsequent grinding operation of the grinding tool 34.

[0028] The clamping mechanism 4 includes a frame 41 fixedly mounted on the base 1 and two lifting plates 42 that can move in opposite directions within the frame 41. V-shaped clamps 43 are fixedly connected to the opposite ends of the two lifting plates 42. Two bidirectional screws 44 are symmetrically and rotatably mounted inside the frame 41. The same side of the two lifting plates 42 is threadedly connected to both ends of the bidirectional screws 44. The bottom of the bidirectional screws 44 passes through the frame 41 and is fixedly fitted with synchronous gears 45. Synchronous toothed belts 46 that mesh with the two synchronous gears 45 are fitted on the outside of the two synchronous gears 45. A second motor 47 is fixedly mounted on the upper end of the frame 41. The upper end of one of the bidirectional screws 44 passes through the frame 41 and is fixedly connected to the output end of the second motor 47. The midpoint between the two V-shaped clamps 43 is located on the axis of the rotating rod 31. The synchronous gear 45 and synchronous toothed belt 46 work together to make the two bidirectional screws 44 rotate synchronously, driving the two lifting plates 42 and V-shaped clamps 43 to move towards each other, ensuring that the pipe is always clamped at the midpoint of the two V-shaped clamps 43; and this midpoint is aligned with the axis of the rotating rod 31, preventing the pipe from deviating from the processing center of the grinding mechanism 3, and improving the accuracy of grinding and chamfering. The V-shaped structure of the V-shaped clamp 43 can automatically adapt to round metal pipes of different diameters, forming a stable clamping and positioning through two-point contact. Compared with flat clamps, it can better fit the outer wall of the pipe, preventing the pipe from rotating or shifting during processing. After the second motor 47 starts, its output end drives one of the bidirectional screws 44 fixedly connected to it to rotate; the synchronous gear 45 at the bottom of the bidirectional screw 44 rotates synchronously with the screw, and drives the synchronous gear 45 at the bottom of the other bidirectional screw 44 to rotate synchronously through the synchronous toothed belt 46 meshing on the outside, thereby realizing the same direction and speed of rotation of the two bidirectional screws 44. When the bidirectional screw 44 rotates, the two lifting plates 42 move towards or away from each other along the axis of the bidirectional screw 44. When the lifting plates 42 move relative to each other, they drive the V-shaped clamps 43 fixed on them to move closer to each other until the V-shaped clamps 43 fit against the outer wall of the metal pipe and complete the clamping and fixing. Conversely, when the lifting plates 42 move in opposite directions, the V-shaped clamps 43 are released and the pipe can be removed. Since the midpoint of the two V-shaped clamps 43 is aligned with the axis of the rotating rod 31, it ensures that the center of the pipe coincides with the machining center of the grinding mechanism 3.

[0029] To reduce wear on the outer wall of the metal pipe fitting caused by the V-shaped clamp 43, an anti-wear pad 431, such as a copper pad or a rubber pad, is fixedly connected to the inner side of the V-shaped clamp 43. The anti-wear pad 431 is made of soft and wear-resistant copper or rubber material, which can replace the V-shaped clamp 43 (metal material) in direct contact with the outer wall of the pipe fitting, avoiding scratches, indentations and other damage to the outer wall of the pipe fitting caused by rigid collision or friction between metals during clamping. It is especially suitable for processing metal pipe fittings with high surface precision requirements. When the V-shaped clamp 43 moves closer to the pipe under the action of the lifting plate 42, the anti-wear pad 431 contacts the outer wall of the pipe before the V-shaped clamp 43. As the clamping force increases, the anti-wear pad 431 adheres to the outer wall of the pipe through the softness and elasticity of its material, forming a flexible contact surface, thus preventing the metal surface of the V-shaped clamp 43 from directly rubbing against the pipe. At the same time, the wear-resistant properties of the anti-wear pad 431 ensure that it can maintain its integrity after long-term use and will not be damaged due to frequent clamping, thus continuously playing a role in anti-wear protection.

[0030] To improve the friction between the anti-wear pad 431 and the metal pipe, the outer surface of the anti-wear pad 431 is provided with anti-slip textures, such as cross-hatching or serrated patterns. These anti-slip textures increase the contact area and frictional resistance between the anti-wear pad 431 and the outer wall of the pipe, preventing axial or circumferential sliding of the pipe due to rotational cutting forces during high-speed processing by the grinding mechanism 3. This ensures the pipe maintains a stable clamping position and improves processing accuracy. When the V-shaped clamp 43 clamps the pipe, the anti-slip texture of the anti-wear pad 431 forms a mechanical engagement with the outer wall of the pipe—the raised parts of the texture embed into tiny depressions on the pipe surface (or form point contacts with smooth surfaces with greater friction), significantly increasing the static friction between them compared to smooth surfaces. During the rotational grinding and chamfering of the pipe by the grinding mechanism 3, this static friction resists the torque and axial force generated during processing, preventing rotation or displacement of the pipe within the V-shaped clamp 43 and ensuring stable processing.

[0031] The driving component 5 includes a guide frame 51 sleeved on the bottom of the support plate 2 and fixedly connected to the base 1, a guide rod 52 slidably inserted into the support plate 2 through a round hole and fixedly connected to the guide frame 51, and a first screw 53 threadedly inserted into the support plate 2 through a screw hole and rotatably connected to the guide frame 51. The end of the first screw 53 away from the clamping mechanism 4 passes through the guide frame 51 and is fixedly connected to a handle 54. Through the threaded transmission of the first screw 53, the rotational movement of the handle 54 can be converted into the linear movement of the support plate 2. The threaded transmission has self-locking and high-precision characteristics, which can accurately control the feed distance of the grinding mechanism 3 to the pipe, avoid uneven feed caused by manual pushing, and ensure consistent chamfer depth and grinding degree. The sliding cooperation between the guide rod 52 and the support plate 2 can guide the movement of the support plate 2, prevent the support plate 2 from shifting laterally or shaking during movement, and ensure that the grinding mechanism 3 always approaches the pipe along the axis of the rotating rod 31, avoiding chamfer angle distortion or uneven grinding caused by feed direction deviation. When the operator turns the handle 54 clockwise, the first screw 53 rotates synchronously with the handle 54. Because the first screw 53 is threadedly connected to the support plate 2 through a screw hole, and the guide rod 52 restricts the rotation of the support plate 2, the support plate 2 will move towards the clamping mechanism 4 along the axis of the guide rod 52, driving the grinding mechanism 3 to feed synchronously. When the handle 54 is turned counterclockwise, the support plate 2 moves away from the clamping mechanism 4 along the guide rod 52, realizing the retraction of the grinding mechanism 3. By controlling the rotation angle of the handle 54, the moving distance of the support plate 2, i.e., the feed amount of the grinding mechanism 3, can be precisely adjusted.

[0032] Example 2 Unlike Embodiment 1, to facilitate end grinding of metal pipes of different diameters, an adjustment mechanism 6 is also included. The adjustment mechanism 6 includes a guide groove 61 formed on the triangular side of the tripod 32 and a guide block 62 slidably disposed within the guide groove 61 and fixedly connected to the slider 33. A second screw 63 is rotatably mounted within the guide groove 61, and the guide block 62 is threaded onto the second screw 63. A cavity is formed in the middle of the tripod 32, and the inner end of the second screw 63 extends into the cavity and is fixedly connected to a driven bevel gear 64. A driving bevel gear 65 is rotatably disposed in the middle of the cavity, meshing with the driven bevel gear 64. The front shaft of the driving bevel gear 65 passes through the tripod 32 and has a hexagonal groove 66. The adjustment mechanism 6 can quickly adapt to the end grinding requirements of metal pipes of different diameters by simultaneously adjusting the positions of the three sliders 33, and it offers high adjustment accuracy, simple operation, and ensures the symmetry and consistency of grinding and chamfering. Insert the external hexagonal wrench into the hexagonal slot 66 and rotate it, causing the driving bevel gear 65 to rotate synchronously. The driving bevel gear 65 meshes with the three driven bevel gears 64, thereby driving the three driven bevel gears 64 to rotate in the same direction and at the same speed. The second screw 63 is rotatably installed in the guide groove 61, and the guide block 62 is slidably set in the guide groove 61 and fixedly connected to the slider 33. At the same time, the guide block 62 is threaded onto the second screw 63. When the second screw 63 rotates, because the guide groove 61 restricts the rotation of the guide block 62, the guide block 62 will slide along the axial direction of the guide groove 61, thereby driving the slider 33 to move synchronously. The three sliders 33 move closer to or further away from the center of the tripod 32, thereby adjusting the position of the grinding tool 34 and the chamfering tool 35 to adapt to metal pipes of different diameters.

[0033] A scale plate 67 is fixedly connected to both sides of the tripod 32, and the scale on the scale plate 67 is based on the center of the tripod 32. The scale on the scale plate 67 can directly reflect the distance from the slider 33 to the center of the tripod 32. The operator can quickly determine the adjustment position of the slider 33 according to the diameter of the pipe without using measuring tools, reducing the measurement steps in the adjustment process and improving the efficiency of adapting to different pipes. The scale plate 67 is fixedly connected to both sides of each corner of the tripod 32. Its scale lines are marked with distance markings from the center of the tripod 32 towards the corners. When the adjustment mechanism 6 drives the slider 33 to move along the guide groove 61, the slider 33 will drive the guide block 62 fixed to it to move synchronously. The side of the slider 33 corresponds to the scale lines of the scale plate 67. The operator can determine the distance from the slider 33 to the center of the tripod 32 by observing the reading of the scale plate 67 aligned with the edge of the slider 33. During adjustment, it is only necessary to adjust the three sliders 33 to the scale position that matches the radius of the pipe to be processed to ensure that the grinding tool 34 and the chamfering tool 35 can accurately act on the pipe end, while ensuring the consistency of the position of the three sliders 33.

[0034] The wiring diagrams of the first motor 36 and the second motor 47 in this invention are common knowledge in the field, and their working principles are known technologies. The appropriate model is selected according to actual use. Therefore, the control method and wiring arrangement of the first motor 36 and the second motor 47 will not be explained in detail.

[0035] The control method of this application is through a controller. The control circuit of the controller can be implemented by a person skilled in the art through simple programming. The power supply is also common knowledge in the art. Since this application is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail here.

[0036] All electrical components mentioned in the text are electrically connected to the main controller and power supply. The main controller can be a conventional and known device such as a computer, and the existing publicly available power connection technology will not be elaborated in the text.

[0037] It should be noted that many of the standard parts used in this application are available on the market, while non-standard parts can be specially customized. The connection method used in this application is also a very common method in the mechanical field, and will not be described in detail here.

[0038] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this application, based on the technical solution and concept of this application, should be included within the scope of protection of this application.

Claims

1. A grinding device for machining metal pipe fittings, characterized in that: It includes a base (1), a support plate (2) disposed on the base (1), and a grinding mechanism (3) disposed on the support plate (2); It also includes a clamping mechanism (4) provided on the base (1) for clamping and fixing metal pipe fittings; The base (1) is provided with a driving component (5) for driving the support plate (2) to move closer to or away from the clamping mechanism (4). The grinding mechanism (3) includes a rotating rod (31) that is rotatably mounted on the top of the support plate (2), a tripod (32) fixedly connected to the front end of the rotating rod (31), a slider (33) set on the triangle of the tripod (32), two grinding knives (34) symmetrically fixedly mounted on the front side of the slider (33) for grinding the ends of metal pipes, a chamfering knife (35) fixedly mounted on the middle of the front side of the slider (33) for chamfering the outer side of the ends of metal pipes, and a first motor (36) fixedly mounted on the support plate (2). The output end of the first motor (36) is fixedly connected to the rear end of the rotating rod (31).

2. The grinding device for machining metal pipe fittings according to claim 1, characterized in that: The rotating rod (31) is connected to the support plate (2) via a bearing.

3. The grinding device for machining metal pipe fittings according to claim 1, characterized in that: The chamfering blade (35) is located at one end of the slider (33) away from the center of the tripod (32).

4. The grinding device for machining metal pipe fittings according to claim 1, characterized in that: The clamping mechanism (4) includes a frame (41) fixedly installed on the base (1) and two lifting plates (42) that can move in opposite directions within the frame (41). V-shaped clamps (43) are fixedly connected to the opposite ends of the two lifting plates (42). Two bidirectional screws (44) are symmetrically rotated within the frame (41). The same side of the two lifting plates (42) is threadedly connected to both ends of the bidirectional screws (44). The bottom of the bidirectional screws (44) passes through the frame (41) and is fixedly fitted with synchronous gears (45). Synchronous toothed belts (46) meshing with the two synchronous gears (45) are fitted on the outer sides of the two synchronous gears (45). A second motor (47) is fixedly installed at the upper end of the frame (41). The upper end of one of the bidirectional screws (44) passes through the frame (41) and is fixedly connected to the output end of the second motor (47). The midpoint between the two V-shaped clamps (43) is located on the axis of the rotating rod (31).

5. The grinding device for machining metal pipe fittings according to claim 4, characterized in that: The inner side of the V-shaped clamp (43) is fixedly connected with an anti-wear pad (431), such as a copper pad or a rubber pad.

6. The grinding device for machining metal pipe fittings according to claim 5, characterized in that: The outer surface of the anti-wear pad (431) is provided with anti-slip texture, such as cross mesh or serrated texture.

7. The grinding device for machining metal pipe fittings according to claim 1, characterized in that: The driving component (5) includes a guide frame (51) sleeved on the bottom of the support plate (2) and fixedly connected to the base (1), a guide rod (52) slidably inserted into the support plate (2) through a round hole and fixedly connected to the guide frame (51), and a first screw (53) threaded into the support plate (2) through a screw hole and rotatably connected to the guide frame (51). The end of the first screw (53) away from the clamping mechanism (4) passes through the guide frame (51) and is fixedly connected to a handle (54).

8. The grinding apparatus for machining metal pipe fittings according to any one of claims 1-7, characterized in that: It also includes an adjustment mechanism (6), which includes a guide groove (61) opened on the triangular side of the tripod (32) and a guide block (62) slidably disposed in the guide groove (61) and fixedly connected to the slider (33). A second screw (63) is rotatably installed in the guide groove (61). The guide block (62) is threadedly fitted on the second screw (63). A cavity is opened in the middle of the tripod (32). The inner end of the second screw (63) extends into the cavity and is fixedly connected to a driven bevel gear (64). A driving bevel gear (65) is rotatably disposed in the middle of the cavity and meshes with the driven bevel gear (64). The front end shaft of the driving bevel gear (65) passes through the tripod (32) and has a hexagonal groove (66).

9. The grinding device for machining metal pipe fittings according to claim 8, characterized in that: The tripod (32) has a scale plate (67) fixedly connected to both sides of its corners, and the scale on the scale plate (67) starts from the center of the tripod (32).

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