A CNC spinning machine for processing tapered steel pipes

Abstract

The present invention relates to the technical field of metal steel pipe spinning, and discloses a CNC spinning machine for processing conical steel pipes, including a machine tool base and a fixed turntable, the fixed turntable is used to clamp the steel pipe and drive the steel pipe to rotate during the spinning process, the upper surface of the machine tool base is provided with a supporting mechanism and a driving mechanism, the supporting mechanism is provided with a spinning mechanism and a steering mechanism, the spinning mechanism includes a spinning wheel and a spinning screw, the spinning wheel is provided with two and respectively used to synchronously spin the inner and outer sides of the steel pipe, and the spinning screw can adjust the distance between the spinning wheels. The present invention can prevent the uneven thickness of the conical steel pipe at various locations due to the different diameters of the conical steel pipe at various locations during the spinning process through two spinning wheels, and can also prevent wrinkles from appearing inside the conical steel pipe during the processing, thereby significantly improving the processing quality of the conical steel pipe.

Description

Technical Field

[0001] The invention relates to the technical field of metal steel pipe spinning, in particular to a numerically controlled spinning machine for processing tapered steel pipes. Background Art

[0002] Spinning is one of the commonly used processing methods for metal steel pipes. After the steel pipe is fixed, it is driven to rotate by the machine tool spindle. During the rotation of the steel pipe, the steel pipe is spun by the spinning wheel. Spinning can complete processing tasks such as drawing, flanging, shrinking and curling.

[0003] Chinese patent CN114472657B discloses a spinning auxiliary tool and a spinning machine tool thereof, which provides a limited position structure to make the workpiece and the mold fit completely during the spinning process, thereby improving the processing effect by increasing the fit between the mold and the workpiece.

[0004] In the above patents and prior art, the processing of steel pipes is performed by extrusion from the outside. However, due to the particularity of the tapered steel pipe, the diameters of each section are different during the external spinning process. The traditional spinning equipment will have different thicknesses at different locations during the stretching process, and may cause wrinkles inside the steel pipe during the spinning process, thereby affecting the processing quality of the tapered steel pipe.

[0005] Currently, no effective solution has been proposed for the problems in the related technologies. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides a CNC spinning machine for processing tapered steel pipes.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0008] A CNC spinning machine for processing a tapered steel pipe comprises a machine base and a fixed turntable, the fixed turntable is used to clamp the steel pipe and drive the steel pipe to rotate during the spinning process, the upper surface of the machine base is provided with a supporting mechanism and a driving mechanism, the supporting mechanism is provided with a spinning mechanism and a steering mechanism, the spinning mechanism comprises a spinning wheel and a spinning screw, the spinning wheel is provided with two and respectively used to synchronously spin the inner side and the outer side of the steel pipe, and the spinning screw can adjust the distance between the spinning wheels;

[0009] The steering mechanism includes a steering guide rail, and the spinning wheel can maintain the same orientation as the steering guide rail. By driving the steering guide rail to rotate, the spinning angle of the spinning wheel can be changed to achieve spinning processing of tapered steel pipes with different tapers;

[0010] The driving mechanism is used to drive the spinning wheel to move along the turning guide rail to continuously perform spinning operation on the side wall of the steel pipe to process a conical surface.

[0011] Preferably, the support mechanism includes a support frame, which is fixedly mounted on the top of the machine tool base. One side of the support frame is set as an arc surface and the arc coincides with the rotation path of one end of the steering guide rail. The arc surface of the support frame is provided with parallel spinning grooves and steering grooves.

[0012] Preferably, one side of the support frame is set as an arc surface and the arc matches the rotation path of one end of the turning guide rail. The turning guide rail can rotate within the range of the turning groove, and the spinning mechanism can extend from the spinning groove along the direction of the turning guide rail to perform spinning operations.

[0013] Preferably, the spinning mechanism includes a spinning plate, a spinning rail is provided on one side of the spinning plate, two spinning sliders are slidably installed on the outside of the spinning slide rail, one side of the two spinning sliders are fixedly connected with a spinning connecting rod, the inner sides of the two spinning connecting rods are threadedly connected with a spinning screw, one end of the spinning screw is fixedly connected with a screw knob, the other end of the spinning connecting rod is rotatably installed with a spinning wheel, the two spinning connecting rods are both slidably matched with the spinning groove and the spinning connecting rod passes through the spinning groove, and the spinning wheel is located on the outside of the support frame.

[0014] Preferably, the thread lines of the spun screw and the two spun connecting rods are in opposite directions, screw grooves are opened on both sides of the support frame, bearing supports are slidably assembled in the two screw grooves, the two ends of the spun screw are rotatably assembled in the bearing supports through bearings, and the screw knob is located on the outside of the support frame.

[0015] Preferably, the steering mechanism includes a steering base, a steering connecting plate and a connecting block, the upper surface of the steering base and the lower surface of the steering connecting plate are fixedly connected by a connecting column, the connecting column is located on the outside of the steering guide rail, the steering base and the steering connecting plate are respectively arranged on the lower side and the upper side of the steering guide rail, the top of the steering connecting plate is fixedly connected to the bottom of the spinning plate, one side of the connecting block is fixedly connected to the support frame, the other side of the connecting block is rotatably connected to the inside of the steering connecting disk, the inside of the steering connecting disk is fixedly clamped with one end of the steering guide rail, and a steering turntable is provided at one end of the steering guide rail.

[0016] The bottom of the steering turntable is fixedly connected to the steering guide rail, and the top of the steering turntable moves from bottom to top and passes through the steering connecting plate, the spinning plate and the top surface of the support frame in sequence. The middle parts of the spinning plate and the steering connecting plate are provided with grooves that slide and abut against both sides of the steering turntable.

[0017] Preferably, one end of the steering guide rail is rotatably connected to the connecting block via a steering connecting plate, and the other end of the steering guide rail is slidably matched with the inner wall of the steering groove.

[0018] Preferably, a limit shaft is provided on the top of the steering base, and the limit shaft is slidably assembled in the track of the steering guide rail.

[0019] Preferably, the driving mechanism comprises a driving motor and a driving base, the driving motor and the driving base are both fixedly mounted on the top of the machine tool base, the output end of the driving motor is fixedly connected with a driving screw, the driving screw is rotatably mounted inside the driving base, the external thread of the driving screw is connected with a screw transmission block, a moving slider is slidably mounted on the top of the driving base, a moving platform is fixedly mounted on the top of the moving slider, and a steering slide rail is fixedly mounted on the top of the moving platform;

[0020] The steering base is slidably connected to the moving platform via a steering slide rail, and the bottom of the moving platform is fixedly connected to the moving slider and the screw transmission block.

[0021] Preferably, the driving motor 91 can drive the driving screw 92 to rotate, and when the driving screw 92 rotates, it can drive the screw transmission block 94 to move, and when the screw transmission block 94 moves, it can drive the spinning mechanism 7 to move to perform the spinning operation.

[0022] Compared with the prior art, the present invention provides a CNC spinning machine for processing tapered steel pipes, which has the following beneficial effects:

[0023] 1. This CNC spinning machine for processing tapered steel pipes is provided with two spinning wheels. When spinning, the two spinning wheels simultaneously spin the inside of the steel pipe. The two spinning wheels can prevent uneven thickness of the tapered steel pipe at different locations due to different diameters of the tapered steel pipe during the spinning process, and can also prevent wrinkles from appearing inside the tapered steel pipe during the processing, thereby significantly improving the processing quality of the tapered steel pipe.

[0024] 2. This CNC spinning machine used for processing tapered steel pipes has two spinning wheels that are slidably installed on a spinning slide rail through a spinning connecting rod, and the two spinning connecting rods are connected by a spinning screw, and the spinning connecting rod can be driven to move by rotating the spinning screw, so that the distance between the two spinning wheels can be adjusted by changing the distance between the two spinning connecting rods. The adjustable distance between the two spinning wheels can be used to adjust the processing thickness according to processing requirements, so that the device can adapt to different processing requirements.

[0025] 3. This CNC spinning machine for processing conical steel pipes is provided with an adjustable steering guide rail, and when the moving platform drives the steering base to move, it moves along the moving direction of the steering guide rail, and when the steering base moves, it can synchronously drive the spinning plate to move synchronously, and when the spinning plate moves, it can drive the spinning wheel to perform spinning operations, and the spinning plate is tilted and moved through the steering base, so that the angle of the steering guide rail can be adjusted according to the inclination angle of the conical steel pipe to be processed, thereby ensuring the processing quality of the conical steel pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is one of the three-dimensional structural schematic diagrams of a CNC spinning machine for processing a tapered steel pipe according to the present invention;

[0027] Figure 2 The second is a three-dimensional structural schematic diagram of a CNC spinning machine for processing a tapered steel pipe according to the present invention;

[0028] Figure 3 It is a three-dimensional structural schematic diagram of a support mechanism of a CNC spinning machine for processing a tapered steel pipe according to the present invention;

[0029] Figure 4 It is a three-dimensional structural schematic diagram of a spinning mechanism of a CNC spinning machine for processing a tapered steel pipe according to the present invention;

[0030] Figure 5 It is a three-dimensional structural schematic diagram of a steering mechanism of a CNC spinning machine for processing a tapered steel pipe according to the present invention;

[0031] Figure 6 It is a cross-sectional structural schematic diagram of a support structure of a CNC spinning machine for processing a tapered steel pipe according to the present invention;

[0032] Figure 7 It is a schematic diagram of the exploded structure of a steering structure of a CNC spinning machine for processing a tapered steel pipe according to the present invention;

[0033] Figure 8 The present invention is a three-dimensional structural schematic diagram of a driving mechanism of a CNC spinning machine for processing tapered steel pipes.

[0034] In the figure: 1. machine tool base; 2. machine tool body; 3. machine tool cover; 4. control panel; 5. fixed turntable; 6. supporting mechanism; 61. supporting frame; 62. screw groove; 63. spinning groove; 64. steering groove; 7. spinning mechanism; 71. spinning plate; 72. spinning slide rail; 73. spinning slider; 74. spinning connecting rod; 75. spinning screw; 76. screw knob; 77. spinning wheel; 8. steering mechanism; 81. steering base; 82. steering connecting plate; 83. steering turntable; 84. connecting block; 85. steering connecting plate; 86. steering guide rail; 9. driving mechanism; 91. driving motor; 92. driving screw; 93. driving base; 94. screw transmission block; 95. moving slider; 96. moving platform; 97. steering slide rail. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] As introduced in the background technology, there are deficiencies in the prior art. In order to solve the above technical problems, the present application proposes a CNC spinning machine for processing tapered steel pipes. Embodiment 1:

[0037] See also Figure 1-Figure 8 A CNC spinning machine for processing a tapered steel pipe comprises a machine base 1 and a fixed turntable 5, wherein the fixed turntable 5 is used to clamp the steel pipe and drive the steel pipe to rotate during the spinning process, and a support mechanism 6 and a driving mechanism 9 are arranged on the upper surface of the machine base 1, and a spinning mechanism 7 and a steering mechanism 8 are arranged on the support mechanism 6;

[0038] The spinning mechanism 7 includes a spinning wheel 77 and a spinning screw 75. Two spinning wheels 77 are provided and are used to spin the inner side and the outer side of the steel pipe synchronously. The spinning screw 75 can adjust the distance between the spinning wheels 77.

[0039] The steering mechanism 8 includes a steering guide rail 86, and the spinning wheel 77 can maintain the same orientation as the steering guide rail 86. By driving the steering guide rail 86 to rotate, the spinning angle of the spinning wheel 77 can be changed to achieve spinning processing of tapered steel pipes with different tapers.

[0040] The driving mechanism 9 is used to drive the spinning wheel 77 to move along the turning guide rail 86 to continuously perform spinning operation on the side wall of the steel pipe to process a conical surface.

[0041] During processing, the steel pipe is first fixed by the fixed turntable 5, and then the distance between the spinning wheels 77 is adjusted by the spinning screw 75 according to the thickness required for processing, and then the angle of the steering mechanism 8 is adjusted according to the inclination angle of the tapered steel pipe. During the spinning work, the steel pipe is driven to rotate at high speed by the fixed turntable 5. When the steel pipe rotates, the driving mechanism 9 drives the spinning mechanism 7 to move along the direction of the steering guide rail 86. During the movement of the spinning mechanism 7, the two spinning wheels 77 simultaneously spin the inside and outside of the steel pipe.

[0042] During operation, the steel pipe to be processed is first fixed on the fixed turntable 5, and then the distance between the spinning wheels 77 is adjusted by the spinning screw 75 according to the thickness required for processing, and then the angle of the steel pipe is adjusted after the spinning thickness adjustment is completed. Specifically, the angle of the spinning mechanism 7 is adjusted during the movement of the spinning mechanism 7 by adjusting the angle of the steering guide rail 86, and then the device is started, and the steel pipe is driven to rotate by the fixed turntable 5. While the steel pipe rotates, the driving mechanism 9 drives the spinning mechanism 7 to move along the direction of the steering guide rail 86. During the movement of the spinning mechanism 7, the two spinning wheels 77 are used to spin the inside and outside of the steel pipe at the same time. During the spinning process, the machine tool body 2 can be closed by the machine tool cover plate 3. During the spinning process, the steel pipe is spun from the inside to the outside by the two spinning mechanisms 7. Through the synchronous spinning of the inside and outside with fixed thickness, the thickness of the processed conical steel pipe is the same at all places, and wrinkles can be prevented from appearing inside the conical steel pipe during the processing, thereby significantly improving the processing quality of the conical steel pipe.

[0043] The difference from the above embodiment is that, please refer to Figure 1-Figure 2 A machine tool body 2 is fixedly installed on the top of the machine tool base 1, and a machine tool cover plate 3 is slidably installed on the surface of the machine tool body 2. During the spinning operation, the machine tool body 2 can be closed by the machine tool cover plate 3. A control panel 4 is fixedly installed on the outside of the machine tool body 2, and a fixed turntable 5 is arranged inside the machine tool body 2, and the fixed turntable 5 is located on the outside of the support mechanism 6. Embodiment 2:

[0044] The difference from the above embodiment is that, please refer to Figure 3-Figure 4 The support mechanism 6 includes a support frame 61, which is fixedly mounted on the top of the machine tool base 1. A screw groove 62 is opened on one side of the support frame, and a parallel spinning groove 63 and a steering groove 64 are opened on the side of the support frame 61 facing the fixed turntable 5.

[0045] One side of the support frame 61 is set as an arc surface and the arc matches the rotation path of one end of the turning guide rail 86. The turning guide rail 86 can rotate within the range of the turning groove 64, and the spinning mechanism 7 can extend from the spinning groove 63 along the direction of the turning guide rail 86 to perform spinning operations.

[0046] The spinning mechanism 7 includes a spinning plate 71, a spinning slide rail 72 is provided on one side of the spinning plate 71, two spinning sliders 73 are slidably installed on the outside of the spinning slide rail 72, one side of the two spinning sliders 73 are fixedly connected with a spinning connecting rod 74, the inner sides of the two spinning connecting rods 74 are threadedly connected with a spinning screw 75, one end of the spinning screw 75 is fixedly connected with a screw knob 76, and the other end of the spinning connecting rod 74 is rotatably installed with a spinning wheel 77, the two spinning connecting rods 74 are both slidably matched with the spinning groove 63 and the spinning connecting rods 74 pass through the spinning groove 63, and the spinning wheel 77 is located on the outside of the support frame 61;

[0047] The spinning mechanism 7 is provided with two spinning wheels 77 , and the two spinning wheels 77 are both slidably mounted on the spinning slide rail 72 via a spinning slider 73 and a spinning connecting rod 74 .

[0048] The two spinning connecting rods 74 are threadedly connected via a spinning screw 75, and the thread lines of the spinning screw 75 and the connection between the two spinning connecting rods 74 are in opposite directions;

[0049] Screw grooves 62 are provided on both sides of the support frame 61, and bearing supports are respectively provided in the two screw grooves 62. The two ends of the spinning screw 75 are respectively assembled in the bearing supports through bearings. The outer surface of the bearing support is square, and the upper and lower surfaces of the bearing support are respectively slidably matched with the upper and lower inner walls of the screw groove 62. The screw knob 76 is located on the outer side of the support frame 61. During operation, the spinning screw 75 can be rotated by the screw knob 76. When the spinning screw 75 rotates, it can synchronously drive the two spinning connecting rods 74 to move in opposite directions, so that the two spinning connecting rods 74 are synchronously close to or away from each other. When the two spinning connecting rods 74 move, they can drive the two spinning wheels 77 to move synchronously, thereby adjusting the distance between the two spinning wheels 77.

[0050] When in use, the spinning screw 75 can be rotated by the screw knob 76. When the spinning screw 75 is rotated, it can drive the two spinning connecting rods 74 to move along the spinning slide rail 72 through the spinning slider 73. The two spinning connecting rods 74 are opposite to the thread lines at the connection point of the spinning screw 75, so that when the spinning screw 75 is rotated, the two spinning connecting rods 74 are driven to move in opposite directions. When the spinning connecting rod 74 moves, the spinning wheel 77 can be driven to move synchronously, so that the distance between the two spinning wheels 77 can be adjusted by rotating the spinning screw 75, so that the device can adjust the processing thickness according to the processing requirements, so that the device can adapt to different processing requirements. Embodiment three:

[0051] The difference from the above embodiment is that, please refer to Figure 5-Figure 7The steering mechanism 8 includes a steering base 81, a steering connecting plate 82 and a connecting block 84. The upper surface of the steering base 81 and the lower surface of the steering connecting plate 82 are fixedly connected by a connecting column. The connecting column is located on the outside of the steering guide rail 86. The steering base 81 and the steering connecting plate 82 are respectively arranged on the lower side and the upper side of the steering guide rail 86. The top of the steering connecting plate 82 is fixedly connected to the bottom of the spinning plate 71. One side of the connecting block 84 is fixedly connected to the support frame 61, and the other side of the connecting block 84 is rotatably connected to the inside of the steering connecting disk 85. The inside of the steering connecting disk 85 is fixedly clamped with one end of the steering guide rail 86, and a steering turntable 83 is provided at one end of the steering guide rail 86.

[0052] The bottom of the steering turntable 83 is fixedly connected to the steering guide rail 86, and the top of the steering turntable 83 moves from bottom to top and passes through the steering connecting plate 82, the spinning plate 71 and the top surface of the support frame 61. The middle of the spinning plate 71 and the steering connecting plate 82 are provided with grooves that slide against the two sides of the steering turntable 83.

[0053] The steering guide rail 86 is a straight track with semicircular ends, and the track width is the same as the diameter of the steering turntable 83. One end of the steering guide rail 86 is rotatably connected to the connecting block 84 through the steering connecting plate 85, and the other end of the steering guide rail 86 is slidably matched with the inner wall of the steering groove 64.

[0054] The steering turntable 83 can be rotated to drive the steering guide rail 86 to rotate along the connection between the steering connecting disk 85 and the connecting block 84. When one end of the steering guide rail 86 rotates along the steering connecting disk 85, the other end of the steering guide rail 86 slides along the steering groove 64. The steering guide rail 86 adjusts its own angle by rotating along the steering connecting disk 85.

[0055] A limit shaft is set on the top of the steering base 81, and the limit shaft is slidably assembled in the track of the steering guide rail 86, so that the steering base 81 can move along the inner wall of the steering guide rail 86 under the drive of the driving mechanism 9. When the steering base 81 moves, it can drive the steering connecting plate 82 and the spinning plate 71 to move synchronously. When the spinning plate 71 moves, it can move synchronously with the spinning mechanism 7, thereby driving the spinning mechanism 7 to perform spinning operations along the direction of the steering guide rail 86.

[0056] The driving motor 91 can drive the driving screw 92 to rotate. When the driving screw 92 rotates, it can drive the screw transmission block 94 to move. When the screw transmission block 94 moves, it can drive the spinning mechanism 7 to move to perform the spinning operation.

[0057] During operation, the moving trajectory of the spinning mechanism 7 is mainly limited by the steering guide rail 86, and the angle of the steering guide rail 86 can be adjusted according to work needs during the operation. Specifically, the steering guide rail 86 is driven to rotate by rotating the steering turntable 83. When one end of the steering guide rail 86 rotates along the connection with the connecting block 84, the other end of the steering guide rail 86 also slides along the steering groove 64. The steering base 81 moves under the drive of the driving mechanism 9. When the steering base 81 moves, the limiting shaft at the top of the steering base 81 can enable the steering base 81 to move along the inner wall of the steering guide rail 86, and when the steering base 81 moves, it can also synchronously drive the steering connecting plate 82 and the spinning plate 71, so that the angles of the steering guide rail 86 in different directions can adjust the moving angle of the spinning mechanism 7, so that the angle of the tapered steel pipe can be adjusted according to production needs. Embodiment 4:

[0058] The difference from the above embodiment is that, please refer to Figure 5-Figure 8 The driving mechanism 9 includes a driving motor 91 and a driving base 93, both of which are fixedly mounted on the top of the machine tool base 1, a driving screw 92 is fixedly connected to the output end of the driving motor 91, the driving screw 92 is rotatably mounted inside the driving base 93, the external thread of the driving screw 92 is connected to a screw transmission block 94, a moving slider 95 is slidably mounted on the top of the driving base 93, a moving platform 96 is fixedly mounted on the top of the moving slider 95, and a steering slide rail 97 is fixedly mounted on the top of the moving platform 96;

[0059] The steering base 81 is slidably connected to the moving platform 96 via a steering slide rail 97 , and the bottom of the moving platform 96 is fixedly connected to the moving slider 95 and the screw transmission block 94 .

[0060] When the driving motor 91 rotates, it can drive the driving screw 92 to rotate inside the driving base 93. When the driving screw 92 rotates, it can drive the screw transmission block 94 to move horizontally. When the screw transmission block 94 moves, it can drive the moving platform 96 to move synchronously.

[0061] When the moving platform 96 moves, it can drive the steering base 81 to move synchronously. When the steering base 81 moves, it moves along the steering guide rail 86 . The sliding connection between the steering base 81 and the moving platform 96 can adapt to the change in the lateral distance between the steering base 81 and the moving platform 96 .

[0062] When working, the driving motor 91 can be used to drive the driving screw 92 to rotate inside the driving base 93. When the driving screw 92 rotates, it can drive the screw transmission block 94 to move horizontally. When moving, the screw transmission block 94 can drive the moving platform 96 to move synchronously. When moving, the screw transmission block 94 can drive the steering base 81, the steering connecting plate 82 and the spinning plate 71 to move synchronously. When moving, the steering base 81 moves along the steering guide rail 86, and the sliding connection between the steering base 81 and the moving platform 96 can adapt to the change in the lateral distance between the steering base 81 and the moving platform 96. During the movement of the steering base 81, the spinning plate 71 can be driven to move in the same direction synchronously. When moving, the spinning plate 71 drives the spinning wheel 77 to perform spinning work. The spinning plate 71 is driven to move by the driving mechanism 9 to perform spinning work. The spinning plate 71 can be moved while also being able to move laterally to a certain extent, thereby enabling the device to perform stable spinning operations.

[0063] While embodiments of the present invention have been shown and described, it will be apparent to those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A CNC spinning machine for processing a tapered steel pipe, comprising a machine base and a fixed turntable, the fixed turntable is used to clamp the tapered steel pipe and drive the tapered steel pipe to rotate during the spinning process, the upper surface of the machine base is provided with a supporting mechanism and a driving mechanism, the supporting mechanism is provided with a spinning mechanism and a steering mechanism, characterized in that: A machine tool body is fixedly installed on the top of the machine tool base, a machine tool cover is slidably installed on the surface of the machine tool body, a control panel is fixedly installed on the outside of the machine tool body, and the fixed turntable is fixedly installed on the inside of the machine tool body; The spinning mechanism includes a spinning wheel and a spinning screw. Two spinning wheels are provided and are respectively used to synchronously spin the inner side and the outer side of the conical steel pipe. The spinning screw can adjust the distance between the spinning wheels. The steering mechanism includes a steering guide rail, and the spinning wheel can maintain the same orientation as the steering guide rail. By driving the steering guide rail to rotate, the spinning angle of the spinning wheel can be changed to achieve spinning processing of tapered steel pipes with different tapers; The driving mechanism is used to drive the spinning wheel to move along the turning guide rail to continuously spin the side wall of the tapered steel pipe to form a tapered surface; The support mechanism comprises a support frame, which is fixedly mounted on the top of the machine tool base, and a parallel spinning groove and a steering groove are formed on the side of the support frame facing the fixed turntable; One side of the support frame is configured as an arc surface and the arc is consistent with the rotation path of one end of the steering guide rail. The steering guide rail can rotate within the range of the steering groove, and the spinning mechanism can extend from the spinning groove along the direction of the steering guide rail to perform the spinning operation; The steering mechanism comprises a steering base, a steering connecting plate and a connecting block, the upper surface of the steering base is fixedly connected to the lower surface of the steering connecting plate by a connecting column, the connecting column is located outside the steering guide rail, the steering base and the steering connecting plate are respectively arranged on the lower side and the upper side of the steering guide rail, the top of the steering connecting plate is fixedly connected to the bottom of the spinning plate, one side of the connecting block is fixedly connected to the support frame, the other side of the connecting block is rotatably connected to the inside of the steering connecting disk, the inside of the steering connecting disk is fixedly clamped with one end of the steering guide rail, and a steering turntable is arranged at one end of the steering guide rail; The bottom of the steering turntable is fixedly connected to the steering guide rail, and the top of the steering turntable is movable from bottom to top through the steering connecting plate, the spinning plate and the top surface of the support frame, and the middle of the spinning plate and the steering connecting plate are provided with grooves that are slidably abutted against the two sides of the steering turntable; One end of the steering guide rail is rotatably connected to the connection block through a steering connection plate, and the other end of the steering guide rail is slidably matched with the inner wall of the steering groove; A limit shaft is arranged on the top of the steering base, and the limit shaft is slidably assembled in the track of the steering guide rail; The driving mechanism comprises a driving motor and a driving base, both of which are fixedly mounted on the top of the machine tool base, the output end of the driving motor is fixedly connected with a driving screw, the driving screw is rotatably mounted inside the driving base, the external thread of the driving screw is connected with a screw transmission block, a moving slider is slidably mounted on the top of the driving base, a moving platform is fixedly mounted on the top of the moving slider, and a steering slide rail is fixedly mounted on the top of the moving platform; The steering base is slidably connected to the moving platform via a steering slide rail, and the bottom of the moving platform is fixedly connected to the moving slider and the screw transmission block.

2. A CNC spinning machine for processing a tapered steel pipe according to claim 1, characterized in that: The spinning mechanism includes a spinning plate, a spinning slide rail is provided on one side of the spinning plate, two spinning sliders are slidably installed on the outside of the spinning slide rail, one side of the two spinning sliders are fixedly connected with a spinning connecting rod, the inner sides of the two spinning connecting rods are threadedly connected with a spinning screw, one end of the spinning screw is fixedly connected with a screw knob, and the other end of the spinning connecting rod is rotatably installed with a spinning wheel, the two spinning connecting rods are both slidably matched with the spinning groove and the spinning connecting rod passes through the spinning groove, and the spinning wheel is located on the outside of the support frame.

3. A CNC spinning machine for processing a tapered steel pipe according to claim 2, characterized in that: The thread lines of the spinning screw and the connection points of the two spinning connecting rods are in opposite directions; Screw grooves are provided on both sides of the support frame, and bearing supports are slidably assembled in the two screw grooves respectively. The two ends of the spinning screw are rotatably assembled in the bearing supports through bearings respectively, and the screw knob is located on the outside of the support frame.

4. The CNC spinning machine for processing a tapered steel pipe according to claim 1, characterized in that: The driving motor can drive the driving screw to rotate, and when the driving screw rotates, it can drive the screw transmission block to move, and when the screw transmission block moves, it can drive the spinning mechanism to move to perform the spinning operation.

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