Forming machine tool for metal manufacturing

Abstract

The forming machine tool for metal manufacturing comprises a machine tool body, a pipe forming machining device and an automatic clamping device, a moving seat capable of moving along a preset line is arranged on the machine tool, and the automatic clamping device comprises a clamping mechanism, a cylindrical clamping seat and a cylindrical mounting seat, the moving seat is provided with a rotary driving assembly for driving the cylindrical mounting seat, the cylindrical clamping seat is provided with a cylindrical clamping chamber and a plurality of radial opening cavities communicated with the cylindrical clamping chamber, the clamping mechanism comprises a plurality of radial clamping components, and the radial clamping components are mounted in the radial opening cavities in a one-to-one correspondence manner; and a clamping driving assembly which is in transmission connection with the radial clamping component is arranged on the cylindrical mounting seat. According to the forming machine tool, the radial clamping bodies can be driven by the clamping driving assembly to clamp the outer wall or the inner wall of the metal pipe, and the metal pipe is driven by the rotating driving assembly to rotate in the clamped state.

Description

Technical Field

[0001] The present invention relates to the technical field of metal forming technology, in particular to a forming machine tool for metal manufacturing. Background Art

[0002] The forming process of metal tubes typically includes key steps such as billet preparation, piercing, stretch rolling, and finishing. Taking seamless tube production as an example, the round billet must first be heated to a high temperature. The solid billet is then pierced and rolled into a hollow shell tube using a cross-rolling piercing mill. The tube is then stretched and reduced on an automatic or continuous tube mill to form a rough tube with a wall thickness close to that of the finished product. Finally, sizing mills, straightening mills, and other equipment are used to optimize dimensional accuracy and surface quality. During stretch rolling and finishing, the metal tube must be precisely fixed to withstand rolling forces and ensure machining accuracy. For example, during the finishing stage, especially when turning the outer diameter, end-face machining, or radial drilling, the metal tube must be rigidly fixed to the machine tool to prevent dimensional deviation or surface damage caused by machining vibration. This step places extremely high demands on the fixture's stability, positioning accuracy, and torsional resistance. The fixture's performance directly impacts the quality of the finished metal tube and machining efficiency.

[0003] Therefore, a clamp is often provided on a machine tool for metal tube forming processing, and the metal tube is clamped and fixed by the clamp. For example, the authorization announcement number is CN211966694U, and the name is a clamping device for hardware stainless steel tube processing. Fixed columns are fixedly welded on both sides of the top of the workbench, and a mounting plate is fixedly welded on the top of the fixed column. A mounting frame is fixedly welded on one side of the top of the mounting plate. A motor is fixedly installed on the top of one side of the inner wall of the mounting frame. The output shaft of the motor is connected to a gear through a transmission belt. The gear is meshed with a vertically placed toothed plate. The bottom of the toothed plate passes through the mounting plate and extends to the outside of the mounting plate. The end of the toothed plate extending to the outside of the mounting plate is fixedly welded with a fixed plate. Sliding rods are movably inserted on both sides of the fixed plate, and a clamping block is fixedly welded on the bottom of the sliding rod. When in use, the steel pipes are placed in the grooves of the fixed seats on both sides of the workbench, and then the motor is started. The motor rotates the gear through the transmission belt, and the gear drives the tooth plate to move in the vertical direction. The tooth plate drives the fixed plate to move in the vertical up and down directions. The fixed plate drives the clamping block to move in the vertical direction to fix the steel pipe.

[0004] Another example is the authorization announcement number CN214134979U, and its name is a clamping device for titanium tube processing with an anti-titanium tube deformation structure, which includes a main body, a servo motor, a screw, a fixing frame, a reinforcing rib, a positioning slide, a clamping plate one, a positioning bolt, a rubber pad, a clamping plate two, a positioning groove, an adjusting rod, a portable handle and a universal wheel. A servo motor is arranged inside the main body, and a screw is arranged at the output end of the servo motor, a fixing frame is fixed at the upper end of the screw, and a positioning slide is provided on the right side of the upper surface of the fixing frame, a clamping plate one is arranged inside the positioning slide, and a clamping plate two is arranged on the left side of the clamping plate one, a positioning groove is provided on the left side of the clamping plate two, and an adjusting rod is provided inside the positioning groove. During use, the user first moves the main body to the designated position through the universal wheel, and then connects the main body to the power supply. The height of the fixing frame can be adjusted through the servo motor and the screw rod, and the provided reinforcing ribs can reinforce the fixing frame to prevent the screw rod from breaking during use. Then, by turning the portable handle, the position of the clamping plate 2 can be adjusted through the positioning groove and the adjusting rod, and the titanium tube can be further fixed through the provided clamping plate 2.

[0005] Some fixtures on existing metal tube forming machines require manual operation and fixation, which is complex and inconvenient for operators. While some fixtures can achieve automatic clamping, most are static and rigid. Once the metal tube is clamped and fixed, it cannot rotate. During the metal tube forming process, multi-station processing such as turning and drilling is often required at different circumferential positions of the tube body. For example, when machining annular grooves or spiral holes, the metal tube needs to rotate stably around its own axis. However, existing fixtures cannot achieve controlled rotation of the metal tube while maintaining stable clamping. The clamp must be loosened, readjusted, and then fixed. This not only increases process time, but can also cause deviations in the machining base due to repeated positioning, affecting the overall machining accuracy. Summary of the Invention

[0006] The object of the present invention is to provide a forming machine tool for metal manufacturing to solve the above-mentioned deficiencies in the prior art.

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

[0008] A forming machine tool for metal manufacturing, comprising a machine tool body and a pipe forming processing device arranged on the machine tool body, and also comprising an automatic clamping device, wherein a movable seat capable of moving along a preset route is provided on the machine tool, the automatic clamping device comprises a clamping mechanism and a coaxially arranged cylindrical clamping seat and a cylindrical mounting seat, the cylindrical mounting seat being rotatably mounted on the movable seat, the movable seat being provided with a rotating drive assembly for driving the cylindrical mounting seat, the cylindrical clamping seat being provided with a cylindrical clamping chamber and a plurality of radially open cavities connected to the cylindrical clamping chamber, the clamping mechanism comprising a plurality of radial clamping members, the radial clamping members being installed in the radially open cavities in a one-to-one correspondence, and the cylindrical mounting seat being provided with the clamping drive assembly transmission-connected to the radial clamping member.

[0009] In the above-mentioned forming machine tool for metal manufacturing, a mounting cavity is provided inside the cylindrical mounting seat, a transmission mechanism is provided in the mounting cavity, and the radial clamping member is transmission-connected to the clamping drive assembly via the transmission mechanism.

[0010] In the above-mentioned forming machine tool for metal manufacturing, the radial clamping member includes a radial clamping body and a radial moving body arranged at the bottom of the radial clamping body, and the radial clamping body is movably arranged in the radial opening cavity.

[0011] The above-mentioned forming machine tool for metal manufacturing is provided with a radial mounting opening on the end surface where the cylindrical mounting seat and the cylindrical clamping seat are connected, and the radial mounting opening is provided in a one-to-one correspondence with the radial opening cavity.

[0012] The above-mentioned forming machine tool for metal manufacturing is provided with a strip-shaped limiting seat in the installation chamber. The strip-shaped limiting seat is provided in a one-to-one correspondence with the radial installation opening, and the radial moving body is slidably connected to the limiting seat.

[0013] In the above-mentioned forming machine tool for metal manufacturing, the clamping drive assembly includes a drive unit arranged in the installation cavity and a drive gear connected to the drive unit.

[0014] The above-mentioned forming machine tool for metal manufacturing, the transmission mechanism includes a ring-shaped transmission body and a transmission gear component that are transmission-connected, and a transmission gear component is provided on one side of each of the strip-shaped limiting seats, and the transmission gear component is transmission-connected to the radial moving body.

[0015] The above-mentioned forming machine tool for metal manufacturing also includes an internal supporting device, which is arranged in the cylindrical clamping chamber and is used to support and fix the inner wall of the metal tube.

[0016] In the above-mentioned forming machine tool for metal manufacturing, the internal support device includes a rotary driving body and an internal support mechanism. The internal support mechanism is driven by the rotary driving body and has an expanded support state and a retracted support state.

[0017] The above-mentioned forming machine tool for metal manufacturing, the support mechanism includes a support assembly and an adjustment guide assembly, the support assembly includes an annular moving body and multiple inner wall support members, and the inner support members are arranged in a one-to-one correspondence with the radial clamping body.

[0018] In the above technical scheme, the forming machine tool for metal manufacturing provided by the present invention includes a machine tool body, a pipe forming processing device arranged on the machine tool body, and an automatic clamping device. The automatic clamping device includes a clamping mechanism and a coaxially arranged cylindrical clamping seat and a cylindrical mounting seat. The cylindrical mounting seat can be rotatably mounted on the movable seat. The movable seat is provided with a rotating drive assembly for driving the cylindrical mounting seat. The cylindrical clamping seat is provided with a cylindrical clamping chamber and a plurality of radial openings connected to the cylindrical clamping chamber. The radial clamping members are installed in the radial openings one by one. The cylindrical mounting seat is provided with a clamping drive assembly that is transmission-connected to the radial clamping members. During use, according to the size of the metal pipe and the clamping requirements, the clamping drive assembly can be driven to enable each radial clamping body to clamp the outer wall or inner wall of the metal pipe. Under the drive of the rotating drive assembly, the cylindrical mounting seat, the cylindrical clamping seat and the clamping mechanism can rotate, so that the metal pipe rotates in the clamping state to perform the forming processing operation of the metal pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments described in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0020] Figure 1 A schematic structural diagram of a forming machine tool for metal manufacturing provided by an embodiment of the present invention;

[0021] Figure 2 A three-dimensional diagram of an automatic clamping device provided in an embodiment of the present invention;

[0022] Figure 3 A schematic diagram of the installation of the clamping mechanism provided in an embodiment of the present invention;

[0023] Figure 4 A three-dimensional diagram of a transmission mechanism provided in an embodiment of the present invention;

[0024] Figure 5A schematic diagram of the installation of an automatic clamping device and an internal support device provided in another embodiment of the present invention;

[0025] Figure 6 A perspective view of an internal support device provided in accordance with another embodiment of the present invention;

[0026] Figure 7 A cross-sectional view of a cylindrical mounting seat and a cylindrical clamping seat provided in yet another embodiment of the present invention;

[0027] Figure 8 A three-dimensional diagram of an internal support device provided in yet another embodiment of the present invention.

[0028] Description of reference numerals:

[0029] 1. Machine tool body; 10. Tube forming processing device; 11. Moving seat; 2. Automatic clamping device; 20. Cylindrical clamping seat; 200. Cylindrical clamping chamber; 201. Radial opening cavity; 21. Fan-shaped body; 22. Rotary drive assembly; 23. Clamping drive assembly; 231. Drive gear; 3. Cylindrical mounting seat; 30. Mounting shaft; 31. Mounting chamber; 32. Radial mounting opening; 33. Strip limiting seat; 331. Strip slide; 332. Upper trough body; 333. Lower trough body; 334. Arc groove; 4. Clamping mechanism; 40. Radial clamping member; 41. Radial clamping body; 410. Protrusion; 42. Radial moving body; 421. Upper strip moving body; 422. Lower strip moving body; 4220. Transmission tooth groove; 5. Transmission mechanism; 50. Annular transmission body ;500, driving tooth groove; 51, transmission gear component; 510, first transmission gear; 511, second transmission gear; 512, connecting shaft; 6, internal support device; 60, rotating driving body; 600, screw; 61, internal support mechanism; 62, support assembly; 620, annular moving body; 621, support connecting member; 622, inner wall support member; 623, arc support plate; 624, radial support plate; 625, sliding sleeve; 626, first articulated seat; 627, second articulated seat; 63, adjustment guide assembly; 630, annular fixing member; 631, radial guide rod; 64, fixing cylinder; 65, radial support mechanism; 651, radial support assembly; 652, clamping support member; 653, first arc plate; 654, first radial plate; 655, connecting strip. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0031] like Figure 1-8As shown, the present invention provides a forming machine tool for metal manufacturing, including a machine tool body 1, a pipe forming processing device 10 arranged on the machine tool body 1, and an automatic clamping device 2. A movable seat 11 capable of moving along a preset route is provided on the machine tool, and the automatic clamping device 2 includes a clamping mechanism 4 and a coaxially arranged cylindrical clamping seat 20 and a cylindrical mounting seat 3. The cylindrical mounting seat 3 is rotatably mounted on the movable seat 11, and a rotating drive component 22 for driving the cylindrical mounting seat 3 is provided on the movable seat 11. A cylindrical clamping chamber 200 and a plurality of radial opening cavities 201 connected to the cylindrical clamping chamber 200 are provided on the cylindrical clamping seat 20. The clamping mechanism 4 includes a plurality of radial clamping members 40, and the radial clamping members 40 are installed in the radial opening cavities 201 one by one. A clamping drive component 23 transmission-connected to the radial clamping member 40 is provided on the cylindrical mounting seat 3.

[0032] Specifically, the machine tool body 1 is used to install a pipe forming device 10, a movable base 11, and other equipment. The pipe forming device 10 is used to process metal pipes, such as cutting and turning the outer diameter. Other devices can also be installed on the machine tool body 1. This is the prior art and will not be described in detail. The improvement of this embodiment over the prior art is that the machine tool is provided with an automatic clamping device 2. The automatic clamping device 2 can not only automatically clamp the metal pipe, but also rotate as needed. The automatic clamping device 2 cooperates with the pipe forming device 10 to perform metal pipe processing operations, such as turning the outer diameter, end surface processing, or radial drilling.

[0033] In this embodiment, the automatic clamping device 2 includes a coaxially arranged cylindrical clamping seat 20 and a cylindrical mounting seat 3, a clamping mechanism 4 is provided on the cylindrical clamping seat 20, and a driving mechanism and a transmission mechanism 5 are provided on the cylindrical mounting seat 3. The clamping mechanism 4 is connected to the driving mechanism through the transmission mechanism 5. The cylindrical mounting seat 3 is rotatably mounted on the movable seat 11, and the driving mechanism includes a rotation drive assembly 22 and a clamping drive assembly 23. The rotation drive assembly 22 is provided on the movable seat 11, and the cylindrical mounting seat 3 is rotatably mounted on the movable seat 11. The rotation drive assembly 22 includes a rotation drive motor and a reducer corresponding to the rotation drive motor. A mounting shaft 30 is provided on the cylindrical mounting seat 3, one end of the mounting shaft 30 extends from the cylindrical mounting seat 3 and is connected to the output end of the reducer. In this way, when the rotation drive motor is working, power is transmitted to the mounting shaft 30 through the reducer, which can drive the cylindrical mounting seat 3 to rotate.

[0034] In this embodiment, a cylindrical clamping chamber 200 is provided at the center position of the cylindrical clamping seat 20. The cylindrical clamping chamber 200 can accommodate metal tubes with smaller diameters and is provided with a plurality of radial opening cavities 201 along the radial direction of the cylindrical clamping seat 20. The radial opening cavities 201 are connected to the cylindrical clamping chamber 200. The plurality of radial opening cavities 201 are arranged in sequence along the circumference of the cylindrical clamping seat 20. In this way, the cylindrical clamping seat 20 is divided into a plurality of fan-shaped bodies 21 by the plurality of radial opening cavities 201, and one end of each fan-shaped body 21 is fixedly mounted on the cylindrical mounting seat 3.

[0035] The clamping mechanism 4 includes a plurality of radial clamping members 40, each corresponding to a radially open cavity 201. A radial clamping member 40 is disposed within each radially open cavity 201. Each radial clamping member 40 includes a radial clamping body 41 and a radially movable body 42 disposed at the bottom of the radial clamping body 41. The radial clamping body 41 is located within the radially open cavity 201 and is driven by the clamping drive assembly 23 and the transmission assembly to move along the radially open cavity 201. In order to improve the clamping effect of the radial clamping body 41, a clamping structure is provided on the inner and outer surfaces of the radial clamping body 41. The clamping structure includes a protrusion 410 provided on the radial clamping body 41, and there are multiple protrusions 410. The multiple protrusions 410 are arranged at intervals along the clamping areas of the inner and outer surfaces of the radial clamping body 41. In this way, in the process of clamping and fixing the metal pipe, the protrusions 410 in the clamping area contact the inner wall or outer wall of the metal pipe.

[0036] In this embodiment, a mounting chamber 31 is provided within the cylindrical mounting seat 3. The radial dimension of the cylindrical clamping chamber 200 is smaller than that of the mounting cavity. The mounting chamber 31 is not connected to the cylindrical clamping chamber 200. A radial mounting opening 32 is provided on the end surface of the cylindrical mounting seat 3 connected to the cylindrical clamping seat 20. The radial mounting opening 32 corresponds to the radial opening cavity 201, and the length of the radial mounting opening 32 is greater than the radial length of the radial opening cavity 201, thereby connecting the radial opening cavity 201 to the mounting chamber 31. A radial moving body 42 is located in the radial mounting opening 32. Driven by the clamping drive assembly 23 and the transmission assembly, the radial moving body 42 can slide along the radial mounting opening 32, thereby causing the radial clamping body 41 to move along the radial opening cavity 201 and have a clamped state and a free state.

[0037] The forming machine tool for metal manufacturing provided by the present invention includes a machine tool body 1, a pipe forming processing device 10 arranged on the machine tool body 1, and an automatic clamping device 2, the automatic clamping device 2 includes a clamping mechanism 4 and a coaxially arranged cylindrical clamping seat 20 and a cylindrical mounting seat 3, the cylindrical mounting seat 3 is rotatably mounted on a movable seat 11, and the movable seat 11 is provided with a rotary drive assembly 22 for driving the cylindrical mounting seat 3, the cylindrical clamping seat 20 is provided with a cylindrical clamping chamber 200 and a plurality of radial openings 201 connected to the cylindrical clamping chamber 200, and the radial The clamping members 40 are installed one by one in the radial opening cavity 201, and the cylindrical mounting seat 3 is provided with a clamping drive assembly 23 that is transmission-connected to the radial clamping members 40. During use, according to the size of the metal pipe and the clamping requirements, the clamping drive assembly 23 can drive each radial clamping body 41 to clamp the outer wall or inner wall of the metal pipe. Under the drive of the rotating drive assembly 22, the cylindrical mounting seat 3, the cylindrical clamping seat 20 and the clamping mechanism 4 can rotate, so that the metal pipe rotates in the clamping state to perform the forming processing operation of the metal pipe.

[0038] In this embodiment, a strip-shaped limiting seat 33 is provided inside the columnar mounting seat 3. The strip-shaped limiting seat 33 is fixedly mounted on one end of the columnar mounting seat 3 near the columnar clamping seat 20. The strip-shaped limiting seats 33 are arranged one-to-one with the radial mounting openings 32. A strip-shaped sliding groove 331 is provided on each strip-shaped limiting seat 33. The strip-shaped sliding groove 331 is provided on the side of the strip-shaped limiting seat 33 corresponding to the radial mounting opening 32. The strip-shaped sliding groove 331 is connected to the radial mounting opening 32, and the radial moving body 42 is slidably restricted within the strip-shaped sliding groove 331. The strip-shaped sliding groove 331 includes an upper groove body 332 and a lower groove body 333 that are connected. The width of the lower groove body 333 is greater than that of the upper groove body 332. An arc-shaped groove 334 is provided on the side of the strip-shaped limiting groove, and the arc-shaped groove 334 is connected to the lower groove body 333. The radial moving body 42 includes an upper bar-shaped moving body 421 and a lower bar-shaped moving body 422 connected to each other. The upper bar-shaped moving body 421 corresponds to the upper groove body 332, and the lower bar-shaped moving body 422 corresponds to the lower groove body 333, that is, the upper bar-shaped moving body 421 is restricted in sliding within the upper groove body 332, and the lower bar-shaped moving body 422 is restricted in sliding within the lower groove body 333.

[0039] In this embodiment, the clamping drive assembly 23 includes a drive unit and a drive gear 231 connected to the drive unit. The transmission mechanism 5 includes an annular transmission body 50 and a transmission gear member 51. The annular transmission body 50 is rotatably mounted on the mounting shaft 30 inside the mounting cavity. The annular transmission body 50 is sequentially provided with drive tooth grooves 500 along the circumferential direction. A transmission gear member 51 is provided on one side of each strip-shaped limiting seat 33. The transmission gear member 51 includes a first transmission gear 510 and a second transmission gear 511 arranged coaxially. The first transmission gear 510 and the second transmission gear 511 They are connected by a connecting shaft 512. The size of the first transmission gear 510 is smaller than that of the second transmission gear 511. The second transmission gear 511 is arranged corresponding to the arc groove 334. Transmission tooth grooves 4220 are arranged on both sides of the lower bar-shaped moving body 422. The second transmission gear 511 is meshed with the transmission tooth grooves 4220 respectively. Each first transmission gear 510 is also transmission-connected with the driving tooth groove 500 on the annular transmission body 50. In this way, the driving gear 231, the annular transmission body 50, the first transmission gear 510, the second transmission gear 511 and the radial moving body 42 are transmission-connected in sequence.

[0040] During use, when the drive gear 231 rotates in the first direction, the annular transmission body 50 rotates, causing the first transmission gears 510 to rotate, and the second transmission gears 511 to rotate along with the first transmission gears 510. The rotation of the second transmission gears 511 causes the radial moving bodies 42 to move toward each other, thereby causing the radial clamping bodies 41 to move toward each other, and the distance between the radial clamping bodies 41 gradually decreases. This process is called the approaching and clamping movement of the radial clamping bodies 41. Conversely, when the drive gear 231 rotates in the second direction (opposite to the first direction), the annular transmission body 50 rotates, causing the first transmission gears 510 and the second transmission gears 511 to rotate. The rotation of the second transmission gear 511 causes the radial moving bodies 42 to move toward each other, thereby causing the radial clamping bodies 41 to move toward each other, and the distance between the radial clamping bodies 41 gradually decreases. This process is called the separating and clamping movement of the radial clamping bodies 41.

[0041] In the process of clamping the metal tube, each radial clamping body 41 can clamp the outer wall or inner wall of the metal tube according to the size of the metal tube and the clamping requirements. When clamping the outer wall of the metal tube, the operation is as follows: in the initial state, each radial clamping body 41 is in a dispersed state (the radial clamping body 41 is collected in the radial opening cavity 201, and the radial clamping body 41 does not extend into the cylindrical clamping chamber 200), the metal tube is inserted into the cylindrical clamping chamber 200, and then the driving gear 231 is driven by the driving unit, so that each radial clamping body 41 moves towards and clamps until each radial clamping body 41 is clamped and fixed on the tube wall of the metal tube.

[0042] When supporting and clamping the inner wall of the metal tube, the operation is as follows: in the initial state, each radial clamping body 41 is in a close state (the radial clamping body 41 is collected in the radial opening cavity 201 and the cylindrical clamping chamber 200), the metal tube is wrapped around the outside of the cylindrical mounting seat 3, and then the driving gear 231 is driven by the driving unit, so that each radial clamping body 41 performs a separation and clamping movement until each radial clamping body 41 moves and abuts against the inner wall of the metal tube.

[0043] When the outer wall of the metal tube is clamped by the automatic clamping device 2, since some metal tubes are thin-walled, if the radial clamping body 41 provides a large clamping force on the tube wall of the metal tube during the clamping process, the metal tube may be deformed. If the radial clamping body 41 provides a small clamping force on the tube wall of the metal tube, the clamping may not be firm. Therefore, during the forming process of the metal tube, relative movement may occur between the metal tube and the radial clamping body 41. Therefore, in another embodiment provided by the present invention, an internal support device 6 is further provided in the cylindrical clamping chamber 200. The internal support device 6 cooperates with the automatic clamping device 2 to improve the clamping effect of the metal tube and avoid deformation of the metal tube during the clamping process.

[0044] In another embodiment provided by the present invention, preferably, the internal support device 6 includes a rotating driving body 60 and an internal support mechanism 61. There is at least one internal support mechanism 61, and the internal support mechanism 61 is driven by the rotating driving body 60 to have an expanded support state and a collapsed state. When there are two, three, or more internal support mechanisms 61, the two, three, or more internal support mechanisms 61 are sequentially spaced along the axis of the rotating driving body 60, and the states of the internal support mechanisms 61 are the same, that is, the internal support mechanisms 61 are driven by the rotating driving body 60 to move synchronously.

[0045] In another embodiment provided by the present invention, preferably, each internal support mechanism 61 includes a support assembly 62 and an adjustment guide assembly 63, and the rotational drive body 60 includes a rotational drive unit and a screw 600. The screw 600 is coaxially arranged with the cylindrical clamping chamber 200. The rotational drive unit can be mounted on the end plate of the cylindrical mounting seat 3 on the side close to the cylindrical clamping seat 20. The screw 600 is driven by the rotational drive unit to rotate. The support assembly 62 includes an annular moving body 620, a plurality of supporting connectors 621, and a plurality of inner wall support members 622. The annular moving body 620 is connected to the screw 600 to form a ball screw 600 structure. In this way, when the screw 600 rotates, the annular moving body 620 can be driven to reciprocate along the axis of the screw 600.

[0046] Multiple supporting connectors 621 and multiple inner wall support members 622 are sequentially spaced along the circumference of the annular moving body 620. The number of inner wall support members 622 matches the number of radial clamping bodies 41, and they are arranged one-to-one. The inner wall support members 622 include an arcuate support plate 623 and a radial support plate 624. The arcuate support plate 623 is used to press and support the inner wall of the metal tube. The radial support plate 624 is arranged perpendicular to the arcuate support plate 623 and is arranged radially along the cylindrical clamping chamber 200. A sliding sleeve 625 is provided at the end of the radial support plate 624 away from the arcuate support plate 623. The sliding sleeve 625 is movably connected to the adjustment guide assembly 63. The adjustment guide assembly 63 allows the movable sleeve to move only radially along the cylindrical clamping chamber 200.

[0047] The support connecting member 621 is arranged in a one-to-one correspondence with the inner wall support member 622, and each sliding sleeve 625 is provided with a first hinge seat 626. A plurality of second hinge seats 627 are provided on the annular moving body 620. The plurality of second hinge seats 627 are arranged in sequence along the circumference of the annular moving body 620, and the second hinge seats 627 are arranged in a one-to-one correspondence with the first hinge seats 626. One end of the support connecting member 621 is rotatably mounted on the first hinge seat 626, and the other end of the support connecting member 621 is rotatably mounted on the second hinge seat 627. In this way, when the screw 600 rotates, the annular moving body 620 is correspondingly driven to move along the axial direction of the screw 600, and the sliding sleeve 625 moves along the adjustment guide assembly 63, so that the arc-shaped support plate 623 moves radially along the cylindrical clamping chamber 200.

[0048] In another embodiment provided by the present invention, preferably, the adjustment guide assembly 63 includes an annular fixing member 630 and a plurality of radial guide rods 631. A fixing cylinder 64 is sleeved on the outer side of the lead screw 600. The annular fixing member 630 is fixedly mounted on the fixing cylinder 64. The fixing cylinder 64 is provided with a strip-shaped opening portion. The strip-shaped opening portion is arranged on the side wall of the fixing cylinder 64 along the axis direction parallel to the fixing cylinder 64. The strip-shaped opening portion has a certain length and corresponds one-to-one with the support connecting member 621, so that the support connecting member 621 can move in the strip-shaped opening portion during the movement of the sliding sleeve 625. The plurality of radial guide rods 631 are sequentially spaced along the circumference of the annular fixing member 630, and the radial guide rods 631 are arranged one-to-one with the radial support plate 624, that is, the sliding sleeve 625 on each radial guide plate is sleeved on the radial guide rod 631. In this way, when the annular moving body 620 moves to drive the arc-shaped support plate 623, the sliding sleeve 625 reciprocates along the radial guide rod 631.

[0049] In another embodiment provided by the present invention, the internal support device 6 is specifically operated as follows during use: in the initial state, each inner wall support member 622 is in a retracted state. At this time, there is a large annular gap between the inner wall support member 622 and the inner wall of the cylindrical clamping chamber 200, so that the metal tube can be inserted into the annular gap. Then, the screw 600 is driven to rotate in the first direction, correspondingly driving the annular motion body 620 to move. When the annular motion body 620 moves toward the radial guide rod 631, the annular motion body 620 passes through The support connector 621 drives the sliding sleeve 625, causing it to move away from the lead screw 600. This causes the radial support plates 624 and the arcuate support plates 623 to gradually move closer to the inner wall of the metal tube until the arcuate support plates 623 press against the inner wall of the metal tube. The drive of the lead screw 600 is then stopped, causing the lead screw 600 and the arcuate support plates 623 to remain in this position, thereby achieving support for the inner wall of the metal tube by the arcuate support plates 623. At this point, the arcuate support plates 623 are in an extended supporting state. The drive unit then drives the drive gear 231, causing the radial clamping bodies 41 to move closer together, clamping until they are clamped and fixed to the outer wall of the metal tube. In this way, the radial clamping body 41 and the arc-shaped support plate 623 apply pressure to the inner wall and outer wall of the metal tube respectively, thereby improving the clamping strength. In addition, the radial clamping body 41 and the arc-shaped support plate 623 are positioned correspondingly, that is, the radial clamping body 41 and the arc-shaped support plate 623 are on both sides of the metal tube wall, thereby avoiding deformation of the metal tube.

[0050] When the metal tube needs to be removed, the driving gear 231 is first driven by the driving unit, so that each radial clamping body 41 performs a separation clamping movement, so that each radial clamping body 41 loosens the clamping of the outer tube wall of the metal tube, and then the screw 600 is driven to rotate in the opposite direction, and the annular moving body 620 moves away from the radial guide rod 631. The annular moving body 620 pulls the sliding sleeve 625 through the supporting connecting piece 621, so that the sliding sleeve 625 moves toward the direction close to the screw 600. In this way, each arc support plate 623 and the strip support plate gradually move away from the inner wall of the metal tube, and the pressure of the arc support plate 623 on the inner wall of the metal tube disappears, so that the metal tube can be removed.

[0051] When the inner wall of a larger metal tube is clamped and fixed by the automatic clamping device 2, the driving gear 231 is driven by the driving unit, so that each radial clamping body 41 performs a separation and clamping movement until each radial clamping body 41 moves and abuts against the inner wall of the metal tube. In the subsequent forming process of the metal tube, the metal tube is clamped and fixed by the radial clamping body 41. During this process, the metal tube is clamped by the structure formed by the driving gear 231, the annular transmission body 50, the first transmission gear 510, the second transmission gear 511 and the radial clamping body 41. In order to further improve the clamping and supporting strength of the radial clamping body 41 on the metal tube in this clamping situation, in another embodiment provided by the present invention, the internal support device 6 also includes a radial support mechanism 65 for supporting the radial clamping body 41.

[0052] In another embodiment provided by the present invention, preferably, the radial support mechanism 65 has a structure similar to that of the internal support mechanism 61: the radial support mechanism 65 includes a radial support assembly 65162 and an adjustment guide assembly 63, the radial support assembly 65162 includes an annular moving body 620, a plurality of supporting connectors 621 and a plurality of clamping supports 652, the annular moving body 620 is connected to the screw 600 to form a ball screw 600 structure, so that when the screw 600 rotates, the annular moving body 620 can be driven to reciprocate along the axial direction of the screw 600.

[0053] In another embodiment provided by the present invention, preferably, a plurality of supporting connectors 621 and a plurality of clamping supports 652 are arranged in sequence along the circumference of the annular moving body 620, and the clamping supports 652 include a first arc plate 653 and a first radial plate 654. The first arc plate 653 is used to press and support the inner wall of the radial clamping body 41. The first radial plate 654 is arranged perpendicular to the first arc plate 653. The first radial plate 654 is arranged along the radial direction of the cylindrical clamping chamber 200. A sliding sleeve 625 is provided at one end of the first radial plate 654 away from the first arc plate 653. The sliding sleeve 625 is movably connected to the adjustment guide assembly 63. By adjusting the guide assembly 63, the movable sleeve can only move along the radial direction of the cylindrical clamping chamber 200. The length of the first radial plate 654 is greater than that of the radial support plate 624, but the difference in length between the first radial plate 654 and the radial support plate 624 is less than the thickness of the metal tube wall. A strip-shaped connecting groove is provided on the side of the first radial plate 654 corresponding to the first curved plate 653. A connecting strip 655 is provided on the inner wall of the first curved plate 653. The connecting strip 655 is adjustably mounted within the strip-shaped connecting groove, thereby allowing the distance between the first curved plate 653 and the first radial plate 654 to be adjusted as needed. The structure of the adjustment guide assembly 63, the structure of the support connector 621, and the connection relationship between the support connector 621 and the clamping support 652 are the same as those of the internal support mechanism 61 and are not further described.

[0054] The radial support mechanism 65 is provided, and its main functions are as follows: when the inner wall of a metal tube with a larger size is supported and fixed by the automatic clamping device 2, it is supported only by the radial clamping body 41, and its support strength is relatively small. By providing the radial support mechanism 65, when the radial clamping body 41 moves against the inner wall of the metal tube, the screw 600 is driven to rotate, and the annular motion body 620 is driven to move accordingly. When the annular motion body 620 moves toward the direction close to the radial guide rod 631, the annular motion body 620 is moved. The moving body 620 drives the sliding sleeve 625 through the supporting connecting piece 621, so that the sliding sleeve 625 moves in the direction away from the screw 600, so that the first radial plates 654 and the first curved plates 653 gradually move toward the inner wall of the radial clamping body 41 until the first curved plates 653 are pressed against the inner wall of the radial clamping body 41, and then the driving of the screw 600 is stopped, so that the first curved plates 653 further support the radial clamping body 41, thereby improving the strength of fixing the metal tube.

[0055] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims.

Claims

1. A forming machine tool for metal manufacturing, comprising a machine tool body and a pipe forming processing device arranged on the machine tool body, characterized in that: It also includes an automatic clamping device, a movable seat that can move along a preset route is provided on the machine tool, the automatic clamping device includes a clamping mechanism and a coaxially arranged cylindrical clamping seat and a cylindrical mounting seat, the cylindrical mounting seat can be rotatably mounted on the movable seat, the cylindrical clamping seat is provided with a cylindrical clamping chamber and a plurality of radial open cavities connected to the cylindrical clamping chamber, the clamping mechanism includes a plurality of radial clamping members, the radial clamping members are installed in the radial open cavities one by one, and the cylindrical mounting seat is provided with the clamping drive assembly that is transmission-connected to the radial clamping member.

2. The forming machine tool for metal manufacturing according to claim 1, characterized in that: An installation cavity is provided inside the cylindrical installation seat, a transmission mechanism is provided in the installation cavity, and the radial clamping member is transmission-connected to the clamping drive assembly via the transmission mechanism.

3. The forming machine tool for metal manufacturing according to claim 1, characterized in that: The radial clamping member includes a radial clamping body and a radial moving body arranged at the bottom of the radial clamping body. The radial clamping body is movably arranged in the radial opening cavity.

4. The forming machine tool for metal manufacturing according to claim 3, characterized in that: A radial mounting opening is provided on the end surface where the columnar mounting seat is connected to the columnar clamping seat, and the radial mounting opening is provided in a one-to-one correspondence with the radial opening cavity.

5. The forming machine tool for metal manufacturing according to claim 4, characterized in that: A strip-shaped limiting seat is provided in the installation chamber. The strip-shaped limiting seat is provided in a one-to-one correspondence with the radial installation opening, and the radial moving body is slidably connected to the limiting seat.

6. The forming machine tool for metal manufacturing according to claim 1, characterized in that: The clamping drive assembly includes a drive unit arranged in the installation cavity and a drive gear connected to the drive unit.

7. The forming machine tool for metal manufacturing according to claim 5, characterized in that: The transmission mechanism includes an annular transmission body and a transmission gear component in transmission connection. One side of each of the strip-shaped limiting seats is provided with a transmission gear component, and the transmission gear component is in transmission connection with the radial motion body.

8. The forming machine tool for metal manufacturing according to claim 1, characterized in that: It also includes an internal supporting device, which is arranged in the cylindrical clamping chamber and is used to support and fix the inner wall of the metal tube.

9. The forming machine tool for metal manufacturing according to claim 8, characterized in that: The internal support device includes a rotary driving body and an internal support mechanism. The internal support mechanism is driven by the rotary driving body and has an expanded support state and a retracted support state.

10. The forming machine tool for metal manufacturing according to claim 9, characterized in that: The support mechanism includes a support assembly and an adjustment guide assembly. The support assembly includes an annular moving body and a plurality of inner wall support members. The inner support members are arranged in a one-to-one correspondence with the radial clamping bodies.

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