A double-diameter adjustable circular tube intersecting line cutting machine and processing method thereof

Abstract

The invention discloses a double-diameter adjustable round tube intersecting line cutting machine and a processing method thereof. The cutting machine comprises a frame, a cutting gun, two adjustable crankshafts, two motors, a cutting gun feeding slide block, a round tube clamping mechanism, a first linkage member, and a second linkage member. The two adjustable crankshafts respectively comprise two main shafts and an eccentric shaft, the two main shafts are located on the same axis, and the two main shafts can be rotatably connected to the frame around their axes respectively, the eccentric shaft connects the two main shafts, and the eccentric distance between the eccentric shaft and the main shaft is adjustable; the two adjustable crankshafts are perpendicular to each other and distributed up and down, the first linkage member is slidably connected to the eccentric shafts of the two adjustable crankshafts; one main shaft of the two adjustable crankshafts corresponds to the two motors one by one, and the other main shaft of the upper adjustable crankshaft is connected to the round tube clamping mechanism; the cutting gun feeding slide block is slidably arranged on the frame, and the eccentric shaft of the lower adjustable crankshaft is movably connected to the cutting gun feeding slide block through the second linkage member. The invention has a simple structure, is easy to operate, and has high adaptability to the processing object.

Description

Technical Field

[0001] The invention relates to a circular tube intersecting line cutting machine, in particular to a double-diameter adjustable circular tube intersecting line cutting machine and a processing method thereof. Background Art

[0002] Tee pipe fittings are pipe fittings with three pipe openings, which are widely used in construction, chemical industry, shipbuilding, mechanical engineering, metallurgy, electric power and other industries. Tee pipe fittings are two pipe fittings connected vertically, and the shape is T-shaped. The two pipe fittings are the main pipe and the branch pipe. The diameter of the branch pipe is less than or equal to the diameter of the main pipe. The branch pipe is vertically connected to the middle of the main pipe. The main function of the tee pipe fitting is to change the direction of the fluid, and it is used at the place where the main pipe is to branch.

[0003] Tee fittings can be prepared by welding process, and before welding, they need to be cut along the intersection line of the pipe joint. The processes that need to be cut include the intersection line hole of the main pipe and the intersection line end of the branch pipe. At present, this type of processing used to mostly use operation processes such as making templates, marking, manual lofting, manual cutting, and manual grinding. The process flow is cumbersome, and the proportion of manual links is large, resulting in low processing efficiency and a high proportion of scrap repair. When processing different diameter tee fittings, it is necessary to prefabricate corresponding templates according to the diameter combination of the main pipe and the branch pipe. Processing tee fittings with new diameter combinations requires making new templates. The production cost of new products is high and cannot meet the needs of diversified product production. At present, the domestic market lacks professional cutting machines dedicated to cutting the intersection line of round pipes. Most of the existing cutting machines are modified from other machine tools, lack professional processing path planning programs, are inconvenient to operate, and have high equipment costs. Summary of the invention

[0004] The purpose of the present invention is to address the technical problems existing in the prior art and provide a double-diameter adjustable round tube intersection line cutting machine and a processing method thereof, which can be used to cut the connection between the main pipe and branch pipe of a tee pipe fitting and has high workpiece adaptability and can cut main pipes and branch pipes of any diameter combination.

[0005] The technical solution adopted by the present invention to solve its technical problems is: a double-diameter adjustable round tube intersecting line cutting machine, including a frame, a cutting gun, two adjustable crankshafts, two motors, a cutting gun feeding slider, a round tube clamping mechanism, a first linkage member, and a second linkage member. The two adjustable crankshafts respectively include two main shafts and an eccentric shaft. The two main shafts are located on the same axis, and the two main shafts are respectively connected to the frame and can rotate around their axes. The eccentric shaft connects the two main shafts, and the axis of the eccentric shaft is parallel to the axis of the main shaft, and the eccentricity between the eccentric shaft and the main shaft is adjustable; the two adjustable crankshafts are perpendicular to each other and distributed up and down, and the main shaft spacing of the two adjustable crankshafts is consistent with the eccentric shaft spacing, and the first linkage member and the two adjustable crankshafts are connected. The eccentric shaft is movably connected; one of the main shafts of the two adjustable crankshafts corresponds to the two motors one by one to be driven by the corresponding motors, the other main shaft of the upper adjustable crankshaft is connected to the round tube clamping mechanism, and the axis of the other main shaft is located on the axis of the round tube clamped by the round tube clamping mechanism; the cutting gun feed slider is located on one side of the round tube clamping mechanism and is slidably arranged on the frame, and the feeding direction of the cutting gun feed slider is parallel to the axis of the round tube clamped by the round tube clamping mechanism, and the eccentric shaft of the lower adjustable crankshaft is movably connected to the cutting gun feed slider through a second linkage member; the cutting gun is arranged on the cutting gun feed slider, and the cutting gun head points to the axis of the round tube clamped by the round tube clamping mechanism.

[0006] Furthermore, the two adjustable crankshafts also include two connecting rods and two vernier sliders, respectively. One end of the two connecting rods is fixedly connected to the two main shafts one by one, and the rest of the two connecting rods are scales. The two connecting rods are parallel to each other and perpendicular to the main shafts; the two vernier sliders are fixed to the two ends of the eccentric shaft one by one, and the two vernier sliders are slidably set on the scale bodies of the two connecting rods one by one along the length direction of the connecting rods, and the two vernier sliders have two states of sliding and positioning relative to the connecting rods.

[0007] Furthermore, the ruler bodies of the two connecting rods are respectively provided with long holes located in the length direction thereof, and the two vernier sliders are respectively slid on the ruler bodies of the two connecting rods, and the two ends of the eccentric shaft are respectively provided with screws, which pass through the vernier slider, the long hole, a fixed pressure block in sequence, and are screwed with a clamping nut.

[0008] Furthermore, the cutting gun feed slider includes a slider assembly, a push rod, and a push rod optical axis. The slider assembly is slidably arranged on the bracket along the feeding direction, and the cutting gun is arranged on the slider assembly; one end of the push rod is fixed to the slider assembly, and the other end of the push rod is fixed to the push rod optical axis, and the push rod optical axis is perpendicular to the eccentric axis of the adjustable crankshaft below, and the second linkage is movably connected to the push rod optical axis and the eccentric axis of the adjustable crankshaft below.

[0009] Furthermore, the slider assembly includes a first slider and a second slider, and the first slider and the second slider are slidably arranged on the bracket along the feed direction, and the two are distributed along the feed direction and connected together with adjustable spacing; one end of the push rod is fixed on the first slider, and a retractable cutting gun bracket is arranged on the second slider, and the retractable direction of the cutting gun bracket is perpendicular to the feed direction, and the cutting gun is mounted on the cutting gun bracket.

[0010] Furthermore, the first sliding block and the second sliding block are connected by cooperating with two optical axis fixing seats at a certain distance from the optical axis.

[0011] Furthermore, the second linkage member is provided with two through holes, the axes of the two through holes are perpendicular to each other and are not coplanar, and the push rod optical axis and the eccentric axis of the lower adjustable crankshaft are movable through the two through holes one by one.

[0012] Furthermore, the round tube clamping mechanism is a three-jaw chuck; the first linkage member is provided with two upper and lower through holes, the axes of the two through holes are perpendicular to each other and are not on the same plane, and the eccentric shafts of the two adjustable crankshafts are movable through the two through holes one by one.

[0013] Furthermore, one of the main shafts of the two adjustable crankshafts is connected to the output shafts of the two motors one by one through a coupling.

[0014] The present invention further provides a processing method of a double-diameter adjustable round tube intersecting line cutting machine, which is used for processing the main pipe and branch pipe of a tee pipe fitting, wherein the pipe diameter of the branch pipe is less than or equal to the pipe diameter of the main pipe; the processing method includes a processing method for the intersecting line hole of the main pipe and a processing method for the intersecting line end of the branch pipe; the processing method for the intersecting line hole of the main pipe includes the following steps:

[0015] A1) Adjust the eccentricity of the two adjustable crankshafts so that the eccentricity of the upper adjustable crankshaft is equal to the radius of the main pipe, and the eccentricity of the lower adjustable crankshaft is equal to the radius of the branch pipe;

[0016] A2) Clamp the main pipe with the round pipe clamping mechanism and ensure that the cutting gun tip can contact the main pipe;

[0017] A3) ensuring that the motor connected to the upper adjustable crankshaft does not restrict the swing of the upper adjustable crankshaft, and starting the motor corresponding to the lower adjustable crankshaft to drive the lower adjustable crankshaft to rotate one circle;

[0018] The processing method of the intersection line end of the branch pipe comprises the following steps:

[0019] B1) Adjust the eccentricity of the two adjustable crankshafts so that the eccentricity of the upper adjustable crankshaft is equal to the radius of the branch pipe, and the eccentricity of the lower adjustable crankshaft is equal to the radius of the main pipe;

[0020] B2) Clamp the branch pipe with the round pipe clamping mechanism and ensure that the cutting gun tip can contact the branch pipe;

[0021] B3) Ensure that the motor connected to the lower adjustable crankshaft does not restrict the swing of the lower adjustable crankshaft, and start the motor corresponding to the upper adjustable crankshaft to drive the upper adjustable crankshaft to rotate one circle.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The cutting machine of the present invention has a simple structure, is easy to operate, has high adaptability to the processing object, has two cutting modes, can cut the intersection line holes of the main pipe and the intersection line ends of the branch pipe, and can cut the main pipe and branch pipe of any pipe diameter combination, and does not require prefabricated templates or pre-marking, can directly cut round pipes, simplifies the processing steps, greatly improves the processing efficiency, and effectively reduces the scrap rate caused by manual cutting.

[0024] 2. The eccentric shaft is preferably connected to the two main shafts through the two connecting rods and the two vernier sliders, which not only has a simple connection structure and is easy to operate, but also can accurately adjust the eccentricity to ensure processing accuracy.

[0025] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments; however, the double-diameter adjustable round tube intersecting wire cutting machine and the processing method thereof of the present invention are not limited to the embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0027] Figure 2 is a top view of the present invention;

[0028] Figure 3 It is a right side view of the present invention;

[0029] Figure 4 It is a schematic structural diagram of the adjustable crankshaft of the present invention;

[0030] Figure 5 It is a schematic diagram of the assembly of the cutting gun feed slide block and the frame of the present invention;

[0031] Figure 6 It is a schematic diagram of the assembly of the cutting gun feed slide block and the online adjustable crankshaft of the present invention;

[0032] Figure 7 It is a schematic diagram of the simulation of the intersection line trajectory of the present invention;

[0033] Figure 8 is a schematic diagram of the translation of the adjustable crankshaft of the present invention;

[0034] In the figure, 1-support plate, 101-vertical fixed plate, 102-bearing seat, 2-first linkage, 3-adjustable crankshaft on top, 301-spindle, 302-connecting rod, 303-curniture slider, 304-fixed pressure block, 305-pressing nut, 306-eccentric shaft, 3'-adjustable crankshaft on the bottom, 4-second linkage, 5-first slider, 501-push rod, 502-push rod optical axis, 5 03-fixing pin, 6-second slider, 601-pressure block, 602-tensioning bolt, 603-cutting gun bracket, 604-cutting gun head, 7-optical axis fixing seat, 701-hexagon socket bolt, 8-fixed distance optical axis, 9-slider guide rail, 901-guide rail optical axis, 10-fixing bolt, 11-fixing nut, 12-coupling, 13, 13'-motor, 14-three-jaw chuck, 15-round tube. DETAILED DESCRIPTION

[0035] For examples, see Figure 1-Figure 8As shown, a double-diameter adjustable round tube intersecting line cutting machine of the present invention comprises a frame, a cutting gun (not shown in the figure), two adjustable crankshafts 3, 3', two motors 13, 13', a cutting gun feed slider, a round tube clamping mechanism, a first linkage member 2, a second linkage member 4, two main shafts 301 are respectively arranged at the two ends of the two adjustable crankshafts 3, 3', an eccentric shaft 306 is arranged in the middle, and the two main shafts 301 are located on the same axis. The two adjustable crankshafts 3, 3' are respectively mounted horizontally on the frame, and the two main shafts 301 of each adjustable crankshaft are respectively connected to the frame rotatably around their axes, the two ends of the eccentric shaft 306 are respectively connected to the two main shafts 301, and the axis of the eccentric shaft 306 is parallel to the axis of the main shaft 301, and the eccentricity between the eccentric shaft 306 and the main shaft 301 (i.e., the vertical distance between the axis of the eccentric shaft 306 and the axis of the main shaft 301) is adjustable. The two adjustable crankshafts 3, 3' are perpendicular to each other and are distributed up and down. Specifically, the main shaft 301 and the eccentric shaft 306 of one adjustable crankshaft are higher than the main shaft 301 and the eccentric shaft 306 of the other adjustable crankshaft, and the spacing between the main shafts 301 of the two adjustable crankshafts 3, 3' (i.e., the shortest distance between the main shaft of the adjustable crankshaft 3 and the main shaft of the adjustable main shaft 3') is consistent with the spacing between the eccentric shafts 306 of the two adjustable crankshafts 3, 3' (i.e., the shortest distance between the eccentric shaft of the adjustable crankshaft 3 and the eccentric shaft of the adjustable main shaft 3'). The first linkage 2 is movably connected to the eccentric shafts 306 of the two adjustable crankshafts 3, 3'; one of the main shafts of the two adjustable crankshafts 3, 3' corresponds to the two motors 13, 13' respectively, so as to be driven by the corresponding motor. The other main shaft of the upper adjustable crankshaft 3 is connected to the round tube clamping mechanism, and the axis of the other main shaft is located on the axis of the round tube 15 clamped by the round tube clamping mechanism; the cutting gun feed slider is located on one side of the round tube clamping mechanism and is slidably arranged on the frame, and the feeding direction of the cutting gun feed slider is parallel to the axis of the round tube 15 clamped by the round tube clamping mechanism. The eccentric shaft 306 of the lower adjustable crankshaft 3' is movably connected to the cutting gun feed slider through the second linkage 4 to form a sine mechanism. The cutting gun is arranged on the cutting gun feed slider, and the cutting gun head 604 points to the axis of the round tube 15 clamped by the round tube clamping mechanism. The round tube 15 is the round tube to be cut, which can be the main pipe of the three-way pipe fitting or the branch pipe of the three-way pipe fitting. The eccentric shaft 306 is an optical axis.

[0036] In this embodiment, the frame specifically includes a support plate 1 and six vertical fixed plates 101 arranged on the support plate 1, wherein four vertical fixed plates are equipped with bearing seats 102. The four vertical fixed plates are grouped in pairs and are respectively used to install two main shafts 301 of two adjustable crankshafts 3 and 3' using bearings, and the remaining two vertical fixed plates are respectively used to install two motors 13 and 13'.

[0037] In this embodiment, the two adjustable crankshafts 3, 3' further include two connecting rods 302 and two vernier sliders 303, respectively. One end of the two connecting rods 302 is fixedly connected to the two main shafts 301 one by one, and the rest of the two connecting rods 302 are scales. The two connecting rods 302 are parallel to each other and perpendicular to the main shafts 301; the two vernier sliders 303 are fixed to the two ends of the eccentric shaft 306 one by one, and the two vernier sliders 303 are slidably set on the scales of the two connecting rods 302 one by one along the length direction of the connecting rods 302, and the two vernier sliders 303 have two states of sliding and positioning relative to the connecting rods 302. Specifically, the two connecting rods 302 are provided with long holes in the middle of the ruler in the length direction, and the two vernier sliders 303 are respectively slidably sleeved on the two connecting rods 302. The middle part of the eccentric shaft 306 is a thick optical axis, and the two ends are respectively provided with thin screws, which pass through the vernier slider 303, the long hole, a fixed pressure block 304 in sequence, and a clamping nut 305 is screwed on. When the clamping nut 305 is loosened, the vernier slider 303 can slide on the ruler of the connecting rod 302, and the purpose of adjusting the eccentricity is achieved by sliding the vernier slider 303. When the clamping nut 305 is tightened, the vernier slider 303 is fixed on the connecting rod 302.

[0038] In this embodiment, the cutting gun feed slider includes a slider assembly, a push rod 501, and a push rod optical axis 502. The slider assembly is slidably arranged on the bracket along the feeding direction, and the cutting gun is arranged on the slider assembly; one end of the push rod 501 is fixed on the slider assembly, and the other end of the push rod 501 is fixed to the push rod optical axis 502, the push rod optical axis 502 is perpendicular to the eccentric shaft 306 of the lower adjustable crankshaft 3', and the second linkage 4 is movably connected with the push rod optical axis 502 and the eccentric shaft 306 of the lower adjustable crankshaft 3'. Specifically, the slider assembly includes a first slider 5 and a second slider 6. The first slider 5 and the second slider 6 are slidably arranged on the bracket along the feeding direction, and the two are distributed along the feeding direction and connected together with an adjustable spacing. By adjusting the spacing between the first slider 5 and the second slider 6, the processing position of the round tube 15 can be changed. One end of the push rod 501 is fixed to the first slider 5 by a fixing pin 503, and a retractable cutting gun bracket 603 is provided on the second slider 6. The retractable direction of the cutting gun bracket 603 is perpendicular to the feeding direction, and the cutting gun is mounted on the cutting gun bracket 603. The end of the cutting gun bracket 603 is a cutting gun head 604, which can extend to the surface of the circular tube 15 to be cut and is always aligned with the axis of the circular tube 15. The second slider 6 is equipped with a pressing block 601 for pressing the cutting gun bracket 603, and the cutting gun bracket 603 can be fixed by a pressing bolt 602.

[0039] In this embodiment, the first slider 5 and the second slider 6 are connected by a fixed-distance optical axis 8 in cooperation with two optical axis fixing seats 7. Specifically, the two ends of the fixed-distance optical axis pass through the first slider 5 and the second slider 6 respectively, and are fixed by the optical axis fixing seat 7 in cooperation with the hexagon socket bolt 701, so as to adjust the spacing between the first slider 5 and the second slider 6. Two fixing blocks 9 are arranged on the support plate 1, and two guide rail optical axes 901 are fixed between the two fixing blocks 9. The two guide rail optical axes 901 are both arranged along the feeding direction and pass through the first slider 5 and the second slider 6 respectively, so as to guide the first slider 5 and the second slider 6 to move along the feeding direction.

[0040] In this embodiment, the second linkage member 4 is provided with two through holes, the axes of the two through holes are perpendicular to each other and are not coplanar (specifically not on the same vertical plane), and the push rod optical axis 502 and the eccentric shaft 306 of the lower adjustable crankshaft 3' are movable through the two through holes one by one.

[0041] In this embodiment, the round tube clamping mechanism is a three-jaw chuck 14; the first linkage member 2 is provided with two upper and lower through holes, the axes of the two through holes are perpendicular to each other, and are not on the same plane, and maintain a constant distance in the vertical direction. The eccentric shafts 306 of the two adjustable crankshafts 3 and 3' pass through the two through holes one by one. The first linkage member 2 can also be called a cross optical axis slider, which is composed of two vertical small sliders combined up and down, and the two small sliders are respectively provided with one of the through holes. In this embodiment, one of the main shafts of the two adjustable crankshafts 3 and 3' is connected to the output shafts of the two motors 13 and 13' through the coupling 12. The two motors 13 and 13' preferably use reduction motors.

[0042] The invention discloses a double-diameter adjustable round pipe intersection line cutting machine, which can be used to process the intersection line hole of the main pipe of a tee pipe fitting and the intersection line end of the branch pipe. The eccentric shafts 306 of the two adjustable crankshafts 3 and 3' respectively simulate the main pipe and the branch pipe generatrix, and the eccentric distance is the radius of the pipe fitting (i.e., the main pipe or the branch pipe). The first linkage member 2 simulates the intersection of the two generatrixes. Figure 7 When the adjustable crankshaft with small eccentricity rotates, the motion trajectory of the first linkage member 2 is the intersection line of the round tube. During processing, only the motor connected to the adjustable crankshaft with small eccentricity is driven.

[0043] In reality, the eccentric shaft 306 of the two adjustable crankshafts 3 and 3' is not a generatrix without diameter, and there is physical interference when the eccentric shaft 306 of the two adjustable crankshafts 3 and 3' intersect. Therefore, in order to avoid the problem of physical interference, the two adjustable crankshafts 3 and 3' are distributed up and down, and the up and down relationship of the main shafts of the two adjustable crankshafts 3 and 3' corresponds one to one with the up and down relationship of their eccentric shafts, and the distance between the main shafts is equal to the distance between the eccentric shafts. The adjustable crankshaft in the actual position and the adjustable crankshaft in the theoretical position are equivalent to the relative rods of a parallelogram mechanism. One of the characteristics of this mechanism is that the relative rods always remain parallel, and the angular displacement, angular velocity and angular acceleration of the two connecting rods are also always equal, such as Figure 8 shown.

[0044] The present invention decomposes the intersecting line motion trajectory into the rotation of the round tube and the forward and backward feeding motion of the cutting gun. When cutting the intersecting line hole of the main tube, the main tube is clamped on the three-jaw chuck 14, the motor 13' connected to the lower adjustable crankshaft 3' is started, and it is ensured that the motor 13 connected to the upper adjustable crankshaft does not restrict the swing of the upper adjustable crankshaft 3. Specifically, the coupling connected between the upper adjustable crankshaft 3 and the motor 13 can be loosened. When cutting the intersecting line end of the branch tube, the branch tube is clamped on the three-jaw chuck 14, the motor 13 connected to the upper adjustable crankshaft is started, and it is ensured that the motor 13' connected to the lower adjustable crankshaft does not restrict the swing of the lower adjustable crankshaft 3'. Specifically, the coupling connected between the lower adjustable crankshaft 3' and the motor 13' can be loosened.

[0045] The invention discloses a processing method of a double-diameter adjustable round pipe intersecting line cutting machine, which includes a processing method of the intersecting line hole of the main pipe and a processing method of the intersecting line end of the branch pipe. The processing method of the intersecting line hole of the main pipe includes the following steps:

[0046] A1) Adjust the eccentricity of the two adjustable crankshafts 3, 3' so that the eccentricity of the upper adjustable crankshaft 3 is equal to the radius of the main pipe, and the eccentricity of the lower adjustable crankshaft 3' is equal to the radius of the branch pipe;

[0047] A2) Clamp the main pipe with a round pipe clamping mechanism (i.e., three-jaw chuck 14), and ensure that the cutting gun head 604 can contact the main pipe;

[0048] A3) ensure that the motor 13 connected to the upper adjustable crankshaft 3 does not restrict the swing of the upper adjustable crankshaft 3 (specifically, the coupling between the upper adjustable crankshaft 3 and the motor 13 can be loosened), and start the motor connected to the lower adjustable crankshaft 3' to drive the lower adjustable crankshaft 3' to rotate one circle; as the lower adjustable crankshaft 3' rotates, the eccentric shaft 306 of the lower adjustable crankshaft 3' rotates relative to the small slider at the bottom of the first linkage member 2, and causes the first The small slider on the upper link member 2 slides back and forth along the eccentric shaft 306 of the adjustable crankshaft 3, thereby causing the eccentric shaft 306 of the adjustable crankshaft 3 to swing back and forth around the axis of its main shaft 301, and finally causing the main pipe to swing back and forth; at the same time, the eccentric shaft 306 of the lower adjustable crankshaft 3' rotates relative to the second link member 4, and causes the second link member 4 to slide back and forth along the push rod optical axis 502, thereby causing the cutting gun feed slider to drive the cutting gun to feed, and finally processing the intersecting line hole on the main pipe.

[0049] The processing method of the intersection line end of the branch pipe comprises the following steps:

[0050] B1) Adjust the eccentricity of the two adjustable crankshafts 3, 3' so that the eccentricity of the upper adjustable crankshaft 3 is equal to the radius of the branch pipe, and the eccentricity of the lower adjustable crankshaft 3' is equal to the radius of the main pipe;

[0051] B2) Clamp the branch pipe with a round pipe clamping mechanism (i.e., the three-jaw chuck 14), and ensure that the cutting gun head 604 can contact the branch pipe;

[0052] B3) Ensure that the motor 13' connected to the lower adjustable crankshaft 3' does not restrict the swing of the lower adjustable crankshaft 3' (specifically, the coupling between the lower adjustable crankshaft 3' and the motor 13' can be loosened), and start the motor 13 connected to the upper adjustable crankshaft 3 to drive the upper adjustable crankshaft 3 to rotate one circle. As the upper adjustable crankshaft 3 rotates one circle, the branch pipe also rotates one circle. At the same time, the eccentric shaft 306 of the upper adjustable crankshaft 3 and the small slide of the first linkage member 2 are The block rotates relatively, and causes the small slider of the first linkage member 2 to slide back and forth along the eccentric shaft 306 of the adjustable crankshaft 3' below, thereby causing the eccentric shaft 306 of the adjustable crankshaft 3' to swing back and forth around the axis of its main shaft 301, and the eccentric shaft 306 of the adjustable crankshaft 3' below rotates relatively with the second linkage member 4, and causes the second linkage member 4 to slide back and forth along the push rod optical axis 502, thereby causing the cutting gun feed slider to drive the cutting gun to feed, and finally processing the intersection line end on the main pipe.

[0053] The double-diameter adjustable round tube intersection line cutting machine and the processing method thereof of the present invention have simple structure, convenient operation, high adaptability to processing objects, and two cutting modes. The intersecting line holes of the main pipe and the intersecting line ends of the branch pipe can be cut, and the main pipes and branch pipes of any diameter combination can be cut. There is no need to prefabricate templates or pre-mark lines. The round pipe can be directly cut, which simplifies the processing steps, greatly improves the processing efficiency, and effectively reduces the scrap rate caused by manual cutting.

[0054] The above embodiments are only used to further illustrate a double-diameter adjustable circular tube intersecting wire cutting machine and a processing method thereof of the present invention, but the present invention is not limited to the embodiments. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the technical solution of the present invention.

Claims

1. A double-diameter adjustable round tube intersecting line cutting machine, characterized in that: The invention comprises a frame, a cutting gun, two adjustable crankshafts, two motors, a cutting gun feed slider, a round tube clamping mechanism, a first linkage member, and a second linkage member. The two adjustable crankshafts respectively comprise two main shafts and an eccentric shaft. The two main shafts are located on the same axis, and the two main shafts are respectively connected to the frame and can rotate around their axes. The eccentric shaft connects the two main shafts, and the axis of the eccentric shaft is parallel to the axis of the main shaft, and the eccentric distance between the eccentric shaft and the main shaft is adjustable. The two adjustable crankshafts are perpendicular to each other and are distributed up and down, and the main shaft spacing of the two adjustable crankshafts is consistent with the eccentric shaft spacing. The first linkage member is movably connected to the eccentric shafts of the two adjustable crankshafts. One main shaft of the two adjustable crankshafts is divided into a main shaft and a main shaft. The two motors correspond to each other one by one and are driven by the corresponding motors. The other main shaft of the upper adjustable crankshaft is connected to the round tube clamping mechanism, and the axis of the other main shaft is located on the axis of the round tube clamped by the round tube clamping mechanism. The cutting gun feed slider is located on one side of the round tube clamping mechanism and is slidably arranged on the frame, and the feeding direction of the cutting gun feed slider is parallel to the axis of the round tube clamped by the round tube clamping mechanism. The eccentric shaft of the lower adjustable crankshaft is movably connected to the cutting gun feed slider through a second linkage member. The cutting gun is arranged on the cutting gun feed slider, and the cutting gun head points to the axis of the round tube clamped by the round tube clamping mechanism. The cutting gun feed slider includes a slider assembly, a push rod, and a push rod optical axis. The slider assembly is slidably arranged on the frame along the feeding direction, and the cutting gun is arranged on the slider assembly; one end of the push rod is fixed to the slider assembly, and the other end of the push rod is fixed to the push rod optical axis, and the push rod optical axis is perpendicular to the eccentric axis of the adjustable crankshaft below, and the second linkage is movably connected to the push rod optical axis and the eccentric axis of the adjustable crankshaft below.

2. The double-diameter adjustable round tube intersecting line cutting machine according to claim 1, characterized in that: The two adjustable crankshafts also include two connecting rods and two vernier sliders, respectively. One end of the two connecting rods is fixedly connected to the two main shafts one by one, and the rest of the two connecting rods are scales. The two connecting rods are parallel to each other and perpendicular to the main shafts; the two vernier sliders are fixed to the two ends of the eccentric shaft one by one, and the two vernier sliders are slidably set on the scale bodies of the two connecting rods one by one along the length direction of the connecting rods, and the two vernier sliders have two states of sliding and positioning relative to the connecting rods.

3. The double-diameter adjustable round tube intersecting line cutting machine according to claim 2, characterized in that: The ruler bodies of the two connecting rods are respectively provided with long holes located in the length direction thereof, and the two vernier sliders are respectively slidably sleeved on the ruler bodies of the two connecting rods, and the two ends of the eccentric shaft are respectively provided with screws, which pass through the vernier slider, the long hole, a fixed pressure block in sequence, and are screwed with a clamping nut.

4. The double-diameter adjustable circular tube intersecting line cutting machine according to claim 1, characterized in that: The slider assembly includes a first slider and a second slider, which are slidably arranged on the frame along the feed direction, and are distributed along the feed direction and connected together with an adjustable spacing; one end of the push rod is fixed on the first slider, and a retractable cutting gun bracket is arranged on the second slider, and the retracting direction of the cutting gun bracket is perpendicular to the feed direction, and the cutting gun is mounted on the cutting gun bracket.

5. The double-diameter adjustable round tube intersecting line cutting machine according to claim 4, characterized in that: The first sliding block and the second sliding block are connected by cooperating with two optical axis fixing seats at a certain distance from the optical axis.

6. The double-diameter adjustable circular tube intersecting line cutting machine according to claim 1, characterized in that: The second linkage member is provided with two through holes, the axes of the two through holes are perpendicular to each other and are not coplanar, and the push rod optical axis and the eccentric axis of the lower adjustable crankshaft are movable through the two through holes one by one.

7. The double-diameter adjustable round tube intersecting line cutting machine according to claim 1, characterized in that: The round tube clamping mechanism is a three-jaw chuck; the first linkage member is provided with two upper and lower through holes, the axes of the two through holes are perpendicular to each other and are not on the same plane, and the eccentric shafts of the two adjustable crankshafts are movable through the two through holes one by one.

8. The double-diameter adjustable round tube intersecting line cutting machine according to claim 1, characterized in that: One of the main shafts of the two adjustable crankshafts is connected to the output shafts of the two motors one by one through a coupling.

9. A processing method of a double-diameter adjustable round pipe intersecting line cutting machine as claimed in any one of claims 1 to 8, used for processing the main pipe and branch pipe of a tee pipe fitting, wherein the diameter of the branch pipe is less than or equal to the diameter of the main pipe; the processing method includes a processing method for the intersecting line hole of the main pipe and a processing method for the intersecting line end of the branch pipe; characterized in that: The processing method of the intersection line hole of the main pipe includes the following steps: A1) Adjust the eccentricity of the two adjustable crankshafts so that the eccentricity of the upper adjustable crankshaft is equal to the radius of the main pipe, and the eccentricity of the lower adjustable crankshaft is equal to the radius of the branch pipe; A2) Clamp the main pipe with the round pipe clamping mechanism and ensure that the cutting gun tip can contact the main pipe; A3) Ensure that the motor connected to the upper adjustable crankshaft does not restrict the swing of the upper adjustable crankshaft, and start the motor corresponding to the lower adjustable crankshaft to drive the lower adjustable crankshaft to rotate one circle; The processing method of the intersection line end of the branch pipe comprises the following steps: B1) Adjust the eccentricity of the two adjustable crankshafts so that the eccentricity of the upper adjustable crankshaft is equal to the radius of the branch pipe, and the eccentricity of the lower adjustable crankshaft is equal to the radius of the main pipe; B2) Clamp the branch pipe with the round pipe clamping mechanism and ensure that the cutting gun tip can contact the branch pipe; B3) Ensure that the motor connected to the lower adjustable crankshaft does not restrict the swing of the lower adjustable crankshaft, and start the motor corresponding to the upper adjustable crankshaft to drive the upper adjustable crankshaft to rotate one circle.

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