A device for necking and sizing a round tube workpiece

Abstract

The utility model discloses a kind of round tube workpiece necking shaping device, comprising: main shaft subassembly includes rotary drive box, main shaft chuck, limit seat, limit telescopic rod, and limit plate, limit telescopic rod and limit plate are rotationally connected in limit seat, one end of limit plate is rotationally connected in limit telescopic rod;Feeding assembly includes feeding guide rail, transfer pipe and first axial drive module, one end of transfer pipe is connected in the other end of clamping passage, transfer pipe is provided with transfer push rod in the other end, and one side of transfer pipe is equipped with feeding port;Necking assembly includes deflection drive module, deflection positioning plate, necking drive module, necking positioning seat and necking wheel, necking drive module is connected in deflection positioning plate, and necking wheel is rotationally connected in necking positioning seat.The utility model can promote round tube workpiece into clamping passage one by one, and processing efficiency is high, safety performance is high, feeding positioning precision is high, processing consistency is high, and necking processing action is stable.

Description

Technical Field

[0001] This utility model relates to the field of workpiece processing, and in particular to a device for shaping and narrowing the end of a round tube workpiece. Background Technology

[0002] In the field of hardware processing, necking technology is widely used in the manufacture of products such as automotive exhaust pipes, lamp brackets, and hardware fittings. A necking machine is a specialized mechanical device used to reduce the diameter of the ends of workpieces such as pipes and cylinders. It applies radial pressure to the end of a round tube workpiece through a mold, causing the material to gradually shrink within the range of plastic deformation, thereby reducing the diameter.

[0003] In traditional technology, the necking process is completed by a semi-automatic necking machine. This type of necking machine mainly includes a rotating shaft and a fixture connected to the rotating shaft. The round tube workpiece is manually fed to the fixture for clamping. The rotating shaft drives the fixture and workpiece to rotate, and the end of the round tube workpiece is squeezed and necked by a special mold held by a person. This type of necking machine has low processing efficiency, low necking accuracy, and obvious safety hazards. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a round tube workpiece necking and shaping device, which has high necking processing efficiency, high necking and shaping accuracy, and high safety performance.

[0005] A round tube workpiece necking and shaping device according to an embodiment of the present invention includes:

[0006] The spindle assembly includes a rotary drive box, a spindle chuck, a limit seat, a limit telescopic rod, and a limit plate. The spindle chuck is connected to the rotary drive box and has a clamping channel. One end of the limit telescopic rod and the middle of the limit plate are rotatably connected to the limit seat, and one end of the limit plate is rotatably connected to the other end of the limit telescopic rod.

[0007] The feeding assembly includes a feeding guide rail, a transfer tube and a first axial drive module. One end of the transfer tube is connected to the other end of the clamping channel, and the other end of the transfer tube is provided with a transfer push rod connected to the first axial drive module. One side of the transfer tube is provided with a feeding port connected to the feeding guide rail.

[0008] The necking assembly includes a deflection drive module, a deflection positioning plate, a necking drive module, a necking positioning seat, and a necking wheel. The deflection positioning plate is connected to the deflection drive module, the necking drive module is connected to the deflection positioning plate, the necking positioning seat is connected to the necking drive module, and the necking wheel is rotatably connected to the necking positioning seat. Both the necking wheel and the limiting plate are located outside one end of the clamping channel.

[0009] In this embodiment, a heating component is also provided at one end of the clamping channel. The heating component is used to heat the round tube workpiece clamped in the spindle chuck.

[0010] In this embodiment, the heating assembly includes a heating controller and a heating coil connected to the heating controller.

[0011] In this embodiment, the heating assembly further includes a radial drive module, a second axial drive module, a first heating positioning plate, and a second heating positioning plate. The first heating positioning plate is connected to the radial drive module, the second axial drive module is connected to the first heating positioning plate, the second heating positioning plate is connected to the second axial drive module, and the heating controller is connected to the second heating positioning plate.

[0012] In this embodiment, the deflection positioning plate is provided with a discharge guide groove located directly below the spindle chuck.

[0013] In this embodiment, the feeding assembly further includes a vibrating feeding plate, and the end of the feeding guide rail away from the feeding port is connected to the feeding port of the vibrating feeding plate.

[0014] In this embodiment, the deflection drive module includes a deflection cylinder, a rack, and a gear. The rack is connected to the deflection cylinder, the gear is connected to the deflection positioning plate, and the gear meshes with the rack.

[0015] In this embodiment, the rotary drive box includes a housing, a rotary drive module, and a rotary spindle. The rotary spindle is connected to the rotary drive module, and the rotary clamping part of the spindle chuck is connected to the rotary spindle.

[0016] The embodiments of this utility model have at least the following beneficial effects:

[0017] The feeding guide rail, connected to the feeding port on the side of the transfer tube, effectively controls the feeding of round tube workpieces one by one into the transfer tube. The first axial drive module drives the transfer push rod to push the round tube workpiece into the clamping channel, effectively reducing manual intervention, resulting in low labor costs, high processing efficiency, and high safety performance. Furthermore, the transfer push rod and the feeding guide rail are located at different dimensions of the transfer tube, effectively avoiding structural interference and ensuring stable and reliable operation. The limiting telescopic rod drives the limiting plate to rotate and block it outside the exit of the clamping channel, effectively limiting the position of the round tube workpiece protruding outside the clamping channel exit. Simultaneously, the transfer push rod at the entrance of the clamping channel effectively limits the position of the other end of the round tube workpiece, enabling... It effectively ensures that the round tube workpiece is positioned in the designated position in the clamping channel, with high loading and positioning accuracy. In conjunction with the spindle chuck, it can effectively stabilize the position of the round tube workpiece, and the necking and shaping accuracy is high, which can effectively improve the precision of the manufactured product. The limit telescopic rod can effectively control the rotation and opening and closing action of the limit plate, thereby realizing the rapid blocking or release of the workpiece, and the processing consistency is high. Through the dual adjustment and positioning of the deflection drive module and the necking drive module, the necking wheel can be adjusted in the horizontal and deflection directions, which can effectively adapt to the processing requirements of different necking depths and necking angles, and has strong versatility. In addition, the rotation axis of the necking wheel is arranged perpendicular to the deflection axis, which can ensure uniform force during the necking process, stable necking processing action, and high necking processing accuracy. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0019] Figure 1 This is a three-dimensional structural diagram of the round tube workpiece necking and shaping device according to an embodiment of the present utility model;

[0020] Figure 2 This is a three-dimensional structural diagram of the round tube workpiece necking and shaping device according to an embodiment of the present utility model, viewed from another perspective.

[0021] Figure 3 This is a top view of the cylindrical workpiece necking and shaping device according to an embodiment of the present invention.

[0022] Figure 4 For along Figure 3 A schematic diagram of the cross-sectional structure of line A-A';

[0023] Figure 5 For along Figure 3 A schematic diagram of the cross-sectional structure of B-B';

[0024] Figure 6 This is a three-dimensional structural diagram of the round tube workpiece necking and shaping device according to an embodiment of the present utility model in a working state.

[0025] Figure 7 This is a three-dimensional structural diagram of the round tube workpiece necking and shaping device in another working state according to an embodiment of the present utility model.

[0026] Figure 8 This is a three-dimensional structural diagram of the round tube workpiece necking and shaping device in another working state according to an embodiment of the present utility model.

[0027] Figure 9 This is a schematic diagram comparing the structure of a round tube workpiece before and after necking.

[0028] Figure label:

[0029] Spindle assembly 100, rotary drive box 110, housing 111, rotary drive module 112, rotary spindle 113, spindle chuck 120, clamping channel 121, limit seat 130, limit telescopic rod 140, limit plate 150;

[0030] Feeding assembly 200, feeding guide rail 210, transfer tube 220, feeding port 221, first axial drive module 230, transfer push rod 231, vibrating feeding plate 240;

[0031] Narrowing assembly 300, deflection drive module 310, deflection cylinder 311, rack 312, gear 313, deflection positioning plate 320, discharge guide groove 321, narrowing drive module 330, narrowing positioning seat 340, narrowing wheel 350;

[0032] Heating assembly 400, heating controller 410, heating coil 420, radial drive module 430, second axial drive module 440, first heating positioning plate 450, and second heating positioning plate 460. Detailed Implementation

[0033] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0034] In the description of this utility model, it should be understood that the orientation descriptions, such as up, down, left, right, front, and back, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0035] In the description of this utility model, if the wire sleeve or bracket is mentioned, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the order of the technical features indicated.

[0036] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0037] In the field of hardware processing, necking technology is widely used in the manufacture of products such as automotive exhaust pipes, lamp brackets, and hardware fittings. A necking machine is a specialized mechanical device used to reduce the diameter of the ends of workpieces such as pipes and cylinders. It applies radial pressure to the end of a round tube workpiece through a mold, causing the material to gradually shrink within the range of plastic deformation, thereby reducing the diameter.

[0038] In traditional technology, the necking process is completed using a semi-automatic necking machine. This type of machine mainly consists of a rotating shaft and a fixture connected to the rotating shaft. The round tube workpiece is manually fed into the fixture for clamping. The rotating shaft drives the fixture and workpiece to rotate, and the end of the round tube workpiece is squeezed and necked by a manual hand-held special mold. This type of necking machine has insufficient automation, requires frequent manual loading and unloading, has low processing efficiency, and is difficult to meet the needs of mass production. The manual loading and unloading method is prone to inconsistent clamping and installation positions, which in turn leads to inconsistent necking positions. The low consistency of necking processing makes it difficult to control the quality of the processed products, resulting in low necking processing accuracy, a decrease in the pass rate of finished products, and obvious safety hazards.

[0039] The following is for reference only. Figure 1 To be continued Figure 9 This invention describes a round tube workpiece necking and shaping device according to an embodiment of the present invention, which has high necking processing efficiency, high necking and shaping accuracy, and high safety performance.

[0040] Reference Figures 1 to 9 A method for shaping and narrowing the end of a round tube workpiece according to an embodiment of the present invention includes:

[0041] The spindle assembly 100 includes a rotary drive housing 110, a spindle chuck 120, a limit seat 130, a limit telescopic rod 140, and a limit plate 150. The spindle chuck 120 is connected to the rotary drive housing 110 and has an axially extending clamping channel 121. The axial direction refers to the extension direction of the rotary shaft when the rotary drive housing 110 outputs rotary force. The spindle chuck 120 can be a rotary chuck. The limit seat 130 is connected to the machine tool and is located above the rotary drive housing 110. The limit telescopic rod 140 can be a cylinder. One end of the limiting telescopic rod 140 is rotatably connected to the limiting seat 130, one end of the limiting plate 150 is rotatably connected to the other end of the limiting telescopic rod 140, the middle part of the limiting plate 150 is rotatably connected to the limiting seat 130, the middle part of the limiting plate 150 and one end of the limiting telescopic rod 140 are respectively rotatably connected to different positions of the limiting seat 130, the other end of the limiting plate 150 is located outside one end of the clamping channel 121, the rotation trajectory of the limiting plate 150 intersects with the extension line of the clamping channel 121, and the limiting plate 150 is used to block one end of the clamping channel 121.

[0042] The feeding assembly 200 includes a feeding guide rail 210, a transfer tube 220, and a first axial drive module 230. Both the transfer tube 220 and the first axial drive module 230 are connected to the machine tool. The first axial drive module 230 can be configured as a cylinder for axial telescopic drive. One end of the transfer tube 220 is connected to the other end of the clamping channel 121. The other end of the transfer tube 220 is fitted with a transfer push rod 231 connected to the drive end of the first axial drive module 230. The transfer push rod 231 is located at the end of the transfer tube 220 opposite to the clamping channel 121. The first axial drive module 230 is used for driving... The transfer push rod 231 slides back and forth inside the transfer tube 220. A feed port 221 is provided on one radial side of the transfer tube 220. The feed port 221 is located on the circumferential surface of the transfer tube 220. One end of the feeding guide rail 210 passes through the feed port 221. The feeding guide rail 210 is inclined downward and its bottom end is located at the feed port 221. The central axis of the transfer tube 220 and the central axis of the round tube workpiece are collinear. The internal cross-sectional dimensions of the transfer tube 220 match the cross-sectional dimensions of the round tube workpiece. The feeding guide rail 210 is used to transport the round tube workpieces side by side. The central axis of the round tube workpiece is perpendicular to the extension direction of the feeding channel.

[0043] The necking assembly 300 includes a deflection drive module 310, a deflection positioning plate 320, a necking drive module 330, a necking positioning seat 340, and a necking wheel 350. The deflection drive module 310 is connected to the machine tool, the deflection positioning plate 320 is connected to the deflection drive module 310, the deflection axis of the deflection positioning plate 320 is perpendicular to the central axis of the clamping channel 121, the necking drive module 330 is connected to the deflection positioning plate 320, the necking positioning seat 340 is connected to the necking drive module 330, the necking drive module 330 can be configured as a cylinder capable of horizontal extension and retraction, the necking wheel 350 is rotatably connected to the necking positioning seat 340, the rotation axis of the necking wheel 350 is perpendicular to the deflection axis of the deflection positioning plate 320, and the necking wheel 350 is located outside one end of the clamping channel 121.

[0044] In its initial state, the structure of the round tube workpiece necking and shaping device of this utility model embodiment is as follows: Figures 1 to 5 As shown.

[0045] When working, refer to Figure 6 As shown, the limiting telescopic rod 140 extends, and the limiting plate 150 rotates around the limiting seat 130, so that the limiting plate 150 blocks the end of the clamping channel 121 away from the transfer tube 220; the round tube workpiece enters the transfer tube 220 from the feeding guide rail 210 through the feeding port 221. Because the cross-sectional dimensions of the round tube workpiece match those of the transfer tube 220, the round tube workpiece in the transfer tube 220 can effectively block the round tube workpiece in the feeding guide rail 210 from entering, ensuring that the number of workpieces transferred is one. The first axial drive module 230 drives the transfer push rod 231 forward, pushing the round tube workpiece in the transfer tube 220 towards the clamping channel 121 until one end of the round tube workpiece protrudes beyond one end of the clamping channel 121 and abuts against the side of the limiting plate 150. The axial position of the round tube workpiece is positioned by the transfer push rod 231 and the limiting plate 150. The spindle chuck 120 clamps the round tube workpiece, resulting in high loading and positioning efficiency and safe and reliable loading and positioning operation. Figure 1 or Figure 7 As shown, when the limiting telescopic rod 140 retracts, the limiting plate 150 rotates around the limiting seat 130, causing the limiting plate 150 to rotate away from the clamping channel 121, thereby making way for subsequent necking processing; Reference Figure 8As shown, the rotary drive box 110 drives the spindle chuck 120 and the round tube workpiece to rotate, the deflection drive module 310 drives the deflection positioning plate 320 to rotate, and the necking drive module 330 drives the necking positioning seat 340 to move forward. The necking wheel 350 contacts the protruding end of the round tube workpiece and performs necking processing on the end of the rotating round tube workpiece. To improve the stability of the necking processing action, the driving amount of the deflection drive module 310 and the necking drive module 330 can be gradually adjusted during the necking process according to different necking requirements, thereby realizing the gradual necking processing action. The structure of the round tube workpiece before and after processing is shown in the figure. Figure 9 As shown.

[0046] The feeding guide rail 210 is connected to the feeding port 221 on the side of the transfer tube 220, which can effectively control the feeding guide rail 210 to feed the round tube workpieces one by one into the transfer tube 220. The first axial drive module 230 drives the transfer push rod 231 to push the round tube workpieces into the clamping channel 121, which can effectively reduce manual intervention, realize automated feeding, low labor cost, high processing efficiency, and high safety performance. Moreover, the transfer push rod 231 and the feeding guide rail 210 are respectively set in different dimensions of the transfer tube 220, which can effectively reduce manual intervention, realize automated feeding, low labor cost, high processing efficiency, and high safety performance. Effectively avoids structural interference, ensuring stable and reliable operation; the limiting telescopic rod 140 drives the limiting plate 150 to rotate and block it outside the outlet of the clamping channel 121, effectively limiting the position of the round tube workpiece protruding outside the outlet of the clamping channel 121. At the same time, the transfer push rod 231 at the inlet of the clamping channel 121 effectively limits the position of the other end of the round tube workpiece, effectively ensuring that the round tube workpiece is positioned in the designated position in the clamping channel 121. The loading and positioning accuracy is high, and in conjunction with the spindle chuck 120, it can effectively stabilize the position of the round tube workpiece. Significantly reducing processing deviations and achieving high precision in necking and shaping, this method effectively improves the accuracy of the manufactured products. Through a multi-point rotating connection structure, the limiting telescopic rod 140 effectively controls the rotation and opening / closing of the limiting plate 150, thereby quickly blocking or releasing the workpiece. This ensures high processing consistency, and the limiting plate 150, after releasing the workpiece, provides space for necking and shaping, ensuring smooth processing. With dual adjustment and positioning via the deflection drive module 310 and the necking drive module 330, the necking wheel 350 can be adjusted in both horizontal and deflection directions, effectively adapting to different necking depths and angles. Its versatility is strong. Replacing traditional manual hand-held molds with the necking component 300 further reduces manual intervention, resulting in high necking and shaping consistency, high necking efficiency, and effectively reducing the risk of worker injury. Furthermore, the perpendicular arrangement of the rotation axis and deflection axis of the necking wheel 350 ensures uniform force distribution during necking, stable necking action, and high necking precision, effectively preventing unnecessary deformation of the round tube workpiece.

[0047] It is understandable that a heating component 400 is also provided at one end of the clamping channel 121. The heating component 400 is used to heat the round tube workpiece clamped in the spindle chuck 120. The round tube workpiece being processed is a metal workpiece. Before the necking component 300 necks and shapes the round tube workpiece, the end of the round tube workpiece is heated by the heating component 400 to improve the plasticity of the round tube workpiece.

[0048] It is understood that the heating assembly 400 includes a heating controller 410 and a heating coil 420 connected to the heating controller 410. The heating controller 410 is a high-frequency induction controller, and the heating coil 420 is a high-frequency induction coil. The high-frequency induction controller is used to control the high-frequency induction coil to heat the round tube workpiece through electromagnetic induction. The heating controller 410 uses a high-frequency induction controller, which can accurately adjust the output power to achieve rapid heating and constant temperature control. The heating coil 420 is a multi-turn copper high-frequency induction coil, whose inner diameter is slightly larger than the outer diameter of the round tube workpiece. It generates eddy current heating on the surface of the round tube workpiece through electromagnetic induction.

[0049] Specifically, the heating assembly 400 also includes a radial drive module 430, a second axial drive module 440, a first heating positioning plate 450, and a second heating positioning plate 460. The radial drive module 430 is connected to the machine tool, the first heating positioning plate 450 is connected to the radial drive module 430, the second axial drive module 440 is connected to the first heating positioning plate 450, the second heating positioning plate 460 is connected to the second axial drive module 440, and the heating controller 410 is connected to the second heating positioning plate 460.

[0050] After the spindle chuck 120 clamps the round tube workpiece, and before the necking assembly 300 performs necking on the round tube workpiece, refer to Figure 7 As shown, the radial drive module 430, in conjunction with the second axial drive module 440, controls the heating coil 420 to be sleeved around the round tube workpiece clamped in the spindle chuck 120, so that the heating coil 420 heats the round tube workpiece by electromagnetic induction. After heating is completed, the radial drive module 430, in conjunction with the second axial drive module 440, can control the heating coil 420 to detach from the round tube workpiece, thereby making way for the subsequent necking process of the necking assembly 300.

[0051] The radial drive module 430 can be configured as a cylinder that extends and retracts radially, and the second axial drive module 440 can both be configured as cylinders that extend and retract axially. During heating, the radial drive module 430 and the second axial drive module 440 work together to make the heating coil 420 accurately fit into the workpiece; after heating is completed, it quickly retracts to avoid interfering with the shrinking process.

[0052] Understandably, the deflection positioning plate 320 is equipped with a discharge guide groove 321 located directly below the spindle chuck 120. The discharge guide groove 321 is inclined downwards, and its upper part is positioned directly below the spindle chuck 120. A conveyor belt or a collection box can be installed below the bottom of the discharge guide groove 321 to achieve continuous production. The discharge guide groove 321 can guide the output of the finished constricted round tube workpiece, effectively improving the reliability of the device's operation.

[0053] It is understandable that the feeding assembly 200 also includes a vibrating feeding plate 240. The end of the feeding guide rail 210 away from the feeding port 221 is connected to the feeding port of the vibrating feeding plate 240. The vibrating feeding plate 240, in conjunction with the directional rail, achieves the orderly arrangement of the round tube workpieces, and the feeding action is stable and reliable.

[0054] It is understood that the deflection drive module 310 includes a deflection cylinder 311, a rack 312, and a gear 313. The deflection cylinder is connected to the machine base, the rack 312 is connected to the deflection cylinder 311, and the deflection cylinder 311 is used to drive the rack 312 to reciprocate linearly in the horizontal direction. The gear 313 is coaxially fixedly connected to the deflection positioning plate 320, and the deflection positioning plate 320 and / or the gear 313 are rotatably connected to the machine base. The gear 313 meshes with the rack 312. By adjusting the extension and retraction stroke of the deflection cylinder 311, the deflection positioning plate 320 can be effectively controlled to achieve accurate and reliable deflection.

[0055] It is understood that the rotary drive box 110 includes a box body 111, a rotary drive module 112, and a rotary spindle 113. The box body 111 and the rotary drive module 112 are both connected to the machine tool. The rotary spindle 113 is connected to the rotary drive module 112. The rotary clamping part of the spindle chuck 120 is connected to the rotary spindle 113. The clamping channel 121 is located at the center of the rotary clamping part and also passes through the center of the rotary spindle 113.

[0056] The rotary drive module 112 can be a combination of a servo motor and a synchronous belt mechanism, which can effectively improve the space utilization of the machine platform and is easy to design. The servo motor is connected to the rotary spindle 113 through the synchronous belt mechanism.

[0057] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A device for shaping and narrowing the end of a round tube workpiece, characterized in that, include: The spindle assembly (100) includes a rotary drive box (110), a spindle chuck (120), a limiting seat (130), a limiting telescopic rod (140), and a limiting plate (150). The spindle chuck (120) is connected to the rotary drive box (110). The spindle chuck (120) is provided with a clamping channel (121). One end of the limiting telescopic rod (140) and the middle part of the limiting plate (150) are rotatably connected to the limiting seat (130). One end of the limiting plate (150) is rotatably connected to the other end of the limiting telescopic rod (140). The feeding assembly (200) includes a feeding guide rail (210), a transfer tube (220) and a first axial drive module (230). One end of the transfer tube (220) is connected to the other end of the clamping channel (121), and the other end of the transfer tube (220) is provided with a transfer push rod (231) connected to the first axial drive module (230). One side of the transfer tube (220) is provided with a feeding port (221) connected to the feeding guide rail (210). The necking assembly (300) includes a deflection drive module (310), a deflection positioning plate (320), a necking drive module (330), a necking positioning seat (340), and a necking wheel (350). The deflection positioning plate (320) is connected to the deflection drive module (310), the necking drive module (330) is connected to the deflection positioning plate (320), the necking positioning seat (340) is connected to the necking drive module (330), and the necking wheel (350) is rotatably connected to the necking positioning seat (340). The necking wheel (350) and the limiting plate (150) are both located outside one end of the clamping channel (121).

2. The round tube workpiece necking and shaping device according to claim 1, characterized in that, A heating component (400) is provided at one end of the clamping channel (121), which is used to heat the round tube workpiece clamped in the spindle chuck (120).

3. The round tube workpiece necking and shaping device according to claim 2, characterized in that, The heating assembly (400) includes a heating controller (410) and a heating coil (420) connected to the heating controller (410).

4. The round tube workpiece necking and shaping device according to claim 3, characterized in that, The heating assembly (400) further includes a radial drive module (430), a second axial drive module (440), a first heating positioning plate (450), and a second heating positioning plate (460). The first heating positioning plate (450) is connected to the radial drive module (430), the second axial drive module (440) is connected to the first heating positioning plate (450), the second heating positioning plate (460) is connected to the second axial drive module (440), and the heating controller (410) is connected to the second heating positioning plate (460).

5. The round tube workpiece necking and shaping device according to claim 1, characterized in that, The deflection positioning plate (320) is provided with a discharge guide groove (321) located directly below the spindle chuck (120).

6. The round tube workpiece necking and shaping device according to claim 1, characterized in that, The feeding assembly (200) also includes a vibrating feeding plate (240), and the end of the feeding guide rail (210) away from the feeding port (221) is connected to the feeding port of the vibrating feeding plate (240).

7. The round tube workpiece necking and shaping device according to claim 1, characterized in that, The deflection drive module (310) includes a deflection cylinder (311), a rack (312) and a gear (313). The rack (312) is connected to the deflection cylinder (311), and the gear (313) is connected to the deflection positioning plate (320). The gear (313) meshes with the rack (312).

8. The round tube workpiece necking and shaping device according to claim 1, characterized in that, The rotary drive box (110) includes a box body (111), a rotary drive module (112) and a rotary spindle (113). The rotary spindle (113) is connected to the rotary drive module (112), and the rotary clamping part of the spindle chuck (120) is connected to the rotary spindle (113).

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