CN109175054B - Internal rotation spinning machine - Google Patents

Internal rotation spinning machine Download PDF

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Publication number
CN109175054B
CN109175054B CN201811202999.2A CN201811202999A CN109175054B CN 109175054 B CN109175054 B CN 109175054B CN 201811202999 A CN201811202999 A CN 201811202999A CN 109175054 B CN109175054 B CN 109175054B
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China
Prior art keywords
blank
internal rotation
machine tool
spinning machine
tool body
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CN201811202999.2A
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Chinese (zh)
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CN109175054A (en
Inventor
郗有成
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Shanxi Zhongli Flange Co ltd
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Shanxi Zhongli Flange Co ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D22/00Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/14Spinning
    • B21D22/16Spinning over shaping mandrels or formers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D37/00Tools as parts of machines covered by this subclass
    • B21D37/16Heating or cooling
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D43/00Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • B21D43/02Advancing work in relation to the stroke of the die or tool
    • B21D43/04Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work
    • B21D43/10Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by grippers

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)

Abstract

The invention relates to the related field of spinning machines, in particular to an internal rotation spinning machine, which aims to solve the technical problem that the existing spinning machine has low processing efficiency on the inner wall of a blank. The invention provides an internal rotation type spinning machine, which is provided with at least two internal rotation wheels, wherein the internal rotation wheels synchronously feed axially and radially for processing, an external mold provides reverse supporting force for the movement of the internal rotation wheels, the whole structure is simple, the equipment cost is low, the spinning processing of the inner wall of a blank can be facilitated, the processing efficiency is greatly improved, the processing procedures are reduced, and the labor cost is saved; the blank clamping mode of the chuck claw designed by the invention can save blank blanking, solves the technical problem of difficult clamping of the outer die of the internal rotation spinning machine, has double technical effects, ensures that the whole internal rotation spinning machine has more reliable structure and stronger practicability.

Description

Internal rotation spinning machine
Technical Field
The invention relates to the related field of spinning machines, in particular to an internal rotation spinning machine.
Background
Metal spin forming is to form a set shape by rotating a metal stress point from point to line from line to plane, and simultaneously giving a certain pressure in a certain direction to deform and flow a metal material along the direction. The spinning machine is a device for metal spinning forming. The existing spinning machine is an external spinning machine, namely, at least two external spinning wheels are arranged, the internal mold is matched for carrying out spinning processing on the cylindrical blank, the spinning machine is mainly used for realizing the elongation of the blank and the forming of the outer wall of the blank, such as a large cylinder body like a missile shell, and the spinning machine is mainly used for forming the outer wall. For blanks with annular bosses and other structures on the inner walls, the prior internal molds assembled by multiple pieces are matched with the external spinning wheel to process the blanks, each blank is required to be disassembled and assembled by the processing mode, the production efficiency is extremely low, the processing quality is difficult to guarantee, and the blanks are often required to be processed through multiple machining procedures such as a lathe, a boring machine, a machining center and the like, the procedures are complex, and the processing cost is high.
Disclosure of Invention
The invention aims to solve the technical problem that the existing spinning machine has low processing efficiency on the inner wall of a blank. Therefore, the invention provides an internal rotation spinning machine.
The technical scheme adopted for solving the technical problems is as follows:
the internal rotation spinning machine comprises a machine tool body, wherein the machine tool body is provided with a main shaft, and the main shaft is fixedly connected with a connecting seat for installing a blank, and is characterized in that: the rotary wheel frame is connected with a driving assembly for driving the rotary wheel frame to transversely and longitudinally move, the driving assembly is connected with a control device of the machine tool body, and the two internal rotation wheels are propped against the inner side of the blank to finish spinning; the connecting seat is fixedly provided with a chuck concentric with the connecting seat, at least three movable claws capable of radially moving are uniformly distributed on the chuck, and the movable claws support the blank by abutting against the inner wall of the blank; the outer edge of the end face of the chuck is provided with a matching hole corresponding to the screw hole, and the screw hole and the matching hole are inserted with bolts jointly to fix the outer die on the chuck. The control device of the machine tool body controls the action of the driving assembly, and the driving assembly drives the internal rotation wheel to move transversely and longitudinally. The number of the internal rotation wheels is at least two, and can be 3 or 4 or more. During specific processing, the inner rotating wheels are driven to be pressed against the inner wall of the blank, then the inner rotating wheels are driven to synchronously axially and radially feed, and the outer die is fixed to provide reverse supporting force for the inner rotating wheels, so that the inner wall of the blank is processed. In the prior art, the clamping of the blank is mainly realized through bolting, namely, the end face of the blank and the connecting seat are inserted with a bolt jointly to realize fixation, but the clamping mode needs to leave a part inserted with the bolt when the blank is cast, so that the cost of the blank is increased, the blank is cut off later, and the processing workload is increased. According to the invention, the chuck structure blank is adopted, so that the bolt fixing allowance is not required, the cost of the blank is saved, and the workload of subsequent processing is also saved. In addition, if the outer die is fixed by bolts in the prior art, the clamping of the outer die also becomes a technical problem due to the arrangement of the convex part for bolting at the end part of the blank. The invention adopts the clamping mode of the chuck and the movable claw, is based on the scheme of the targeted design of the internal rotation spinning machine, not only can reduce blank blanking, but also solves the technical problem of external mold clamping, and has double technical effects. The chuck structure is a chuck structure for the existing common machine tool, and the adjustment and driving modes of the chuck structure also adopt the conventional structure.
The beneficial effects of the invention are as follows: the invention provides an internal rotation type spinning machine, which is provided with at least two internal rotation wheels, wherein the internal rotation wheels synchronously feed axially and radially for processing, an external mold provides reverse supporting force for the movement of the internal rotation wheels, the whole structure is simple, the equipment cost is low, the spinning processing of the inner wall of a blank can be facilitated, the processing efficiency is greatly improved, the processing procedures are reduced, and the labor cost is saved; the blank clamping mode of the chuck claw designed by the invention can save blank blanking, solves the technical problem of difficult clamping of the outer die of the internal rotation spinning machine, has double technical effects, ensures that the whole internal rotation spinning machine has more reliable structure and stronger practicability.
Drawings
FIG. 1 is a schematic top view of the overall structure of the present invention;
FIG. 2 is a right side elevational schematic of the overall structure of the present invention;
FIG. 3 is a schematic view of the blank and chuck mating structure of the present invention;
FIG. 4 is a schematic view of the chuck and movable jaw configuration of the present invention;
FIG. 5 is a schematic view of the configuration of the heating element of the present invention mated with a blank;
FIG. 6 is a schematic view of the structure of the heating element of the present invention;
fig. 7 is a schematic view showing the installation state structure of the heating element of the present invention.
Detailed Description
Referring to fig. 1 to 4, the machine tool comprises a machine tool body 1, wherein the machine tool body 1 is provided with a main shaft 2, and the main shaft 2 is fixedly connected with a connecting seat 3 for installing a blank, and is characterized in that: the spinning machine further comprises at least two internal rotation wheels 6, wherein the internal rotation wheels 6 are rotatably arranged at the end parts of the spinning frame 7, the spinning frame 7 is connected with a driving assembly 8 for driving the spinning frame 7 to transversely and longitudinally move, the driving assembly 8 is connected with a control device of the machine tool body 1, and the two internal rotation wheels 6 are propped against the inner side of a blank to finish spinning; the connecting seat 3 is fixedly provided with a chuck 11 concentric with the connecting seat 3, at least three movable claws 12 capable of radially moving are uniformly distributed on the chuck 11, and the movable claws 12 support a blank by abutting against the inner wall of the blank; the outer die comprises a chuck 11, and is characterized by further comprising an outer die 4, wherein one end face of the outer die 4 is provided with a plurality of screw holes, the outer edge part of the end face of the chuck 11 is provided with a matching hole 5 corresponding to the screw holes, and the screw holes and the matching hole 5 are inserted with bolts jointly to fix the outer die 4 on the chuck 11. The control device of the machine tool body 1 controls the action of the driving assembly 8, and the driving assembly 8 drives the internal rotation wheel 6 to move transversely and longitudinally. The number of the internal rotation wheels 6 of the present invention is at least two, but may be 3 or 4 or more. During the concrete processing, a plurality of internal rotation wheels 6 are all driven to be pressed against the inner wall of the blank, then the internal rotation wheels 6 are driven to synchronously axially and radially feed, and the external mold 4 is fixed to provide reverse supporting force for the internal rotation wheels 6, so that the inner wall of the blank is processed. In the prior art, the clamping of the blank is mainly realized through bolting, namely, the end face of the blank and the connecting seat 3 are inserted with a bolt jointly to realize fixation, but the clamping mode needs to leave a part inserted with the bolt when the blank is cast, so that the cost of the blank is increased, the blank is cut later, and the processing workload is increased. According to the invention, the chuck 11 is adopted to form a blank without leaving bolt fixing allowance, so that the cost of the blank is saved, and the workload of subsequent processing is also saved. Moreover, if the outer die 4 is mounted by bolts in the prior art, the clamping of the outer die 4 is also a difficult problem due to the provision of the male portion of the blank end for bolting. The clamping mode of the chuck 11 and the movable claw 12 is adopted, and the internal rotation spinning machine is based on the scheme of the targeted design of the internal rotation spinning machine, so that blanking of blanks can be reduced, the technical problem of clamping the outer die 4 is solved, and the double technical effects are achieved.
Preferably, the chuck 11 is detachably fixed to the connection base 3. Because the position of the matching hole 5 on the chuck 11 is fixed, a detachable connection mode is preferably adopted, and when the external mold 4 with different diameters needs to be clamped, the clamping chuck 11 can be replaced, so that the machining of blanks with different diameters can be adapted, and the application range is wider.
Preferably, the side of the chuck 11 is provided with an adjustment hole 13 for adjusting the radial position of the movable jaw 12. The movable claw 12 adopts the existing claw structure, in the embodiment, the manual adjustment is performed by utilizing the adjusting hole 13, the equipment cost is lower, and the use requirement of the whole spinning machine can be met, so that the movable claw is a preferable mode. Of course, in other embodiments, the movable jaw 12 may take other configurations known to those skilled in the art. If the movable claw 12 is connected with a pneumatic device, the movable claw 12 is arranged to be pneumatic.
Referring to fig. 5-7, as a further improvement of the above technical solution, the machine tool body 1 is further provided with a support frame, the support frame is detachably fixed with a heating element 10, the heating element 10 includes two coaxial arc bending plates 10-1 with unequal diameters, a gap 10-2 for accommodating a wall of a blank is formed between the two arc bending plates 10-1, planar ends of the two arc bending plates 10-1, which are far away from the connecting seat 3, are connected through a fan-shaped connecting plate 10-3, heating pipes 10-4 are arranged on the arc bending plates 10-1, and the heating pipes 10-4 are electrically connected with a control device of the machine tool body 1. In the prior art, the external spinning machine mainly heats the outer side of a blank through open fire, the external spinning is changed into internal and external wheel contra-rotation, if the open fire heating is adopted, firstly, the open fire heating is not convenient enough in the cavity, secondly, the internal rotation wheel 6 in the cavity also can interfere the heating process, and most importantly, the open fire heating is easy to cause uneven heating. When the heating element 10 is used, a blank is clamped on the chuck 11, the outer die 4 is fixed on the chuck 11, the heating element 10 is sleeved on the wall of the blank, the sleeve is that the connecting plate 10-3 is placed far away from the main shaft 2, the wall of the blank is placed in a gap 10-2 formed between two arc bending plates 10-1, and the heating element 10 is fixed by a supporting frame. The radial thickness of the gap 10-2 is greater than the thickness of the blank wall, as is known to those skilled in the art, to accommodate the blank, and a preferred manner of mounting the arcuate bend plates 10-1, as will be readily appreciated by those skilled in the art, is to have the axes of the two arcuate bend plates 10-1 coincident with the axis of the blank after installation. The heating element 10 is detachably fixed on the support frame, so that when blanks with different thicknesses are processed, different heating elements 10 can be replaced, and the applicability is wider. Here, it will be apparent to those skilled in the art that the axial length of the arcuate bent plate 10-1 should be greater than the original length of the blank, and substantially correspond to the axial length of the blank after machining. When the machine tool is in operation, the control device of the machine tool body 1 controls the opening and closing and the adjustment of the heating pipes 10-4, and as the blank rotates along with the main shaft 2, the heating pipes 10-4 are uniformly distributed on the arc bending plate 10-1, so that the blank is heated uniformly. The heating element 10 provided by the invention is particularly suitable for an internal rotation processing mode, and can avoid interference caused by the internal rotation wheel 6.
As a preferable arrangement structure of the heating pipe 10-4, the arc bending plate 10-1 is provided with an arc-shaped concave part along the inner arc surface thereof, the heating pipe 10-4 is embedded in the concave part, and the structure can avoid the heating pipe 10-4 from rubbing and colliding with the wall of the blank when the blank rotates, so that the heating element 10 is damaged. The heating element 10 may be a structure commonly used in the art, such as an infrared heating tube 10-4. Further, in order to prevent the chips or external dust on the blank from entering the heating element 10, a cover plate is further covered on the concave portion, and the cover plate and the concave portion together form a closed cavity, and the heating tube 10-4 is placed in the closed cavity.
Since the support of the heating element 10 by the support frame is only at one end, the rigidity requirements for the support frame are high. In order to reduce the supporting pressure of the supporting frame, the machine tool body 1 is provided with a lifting device 14 for lifting and supporting the heating element 10, and in operation, the supporting frame and the lifting device 14 cooperate together to realize the stable support of the heating element 10. Of course, the lifting device 14 is also used for the installation of the heating element 10.
As a preferable structure of the support frame, the support frame comprises a bottom frame 9-1 fixed on a machine tool body 1, a support rod 9-2 is hinged at the upper end part of the bottom frame 9-1, a support plate 9-3 with a clamping groove at the top is also fixed on the bottom frame 9-1, the middle part of the support rod 9-2 can be clamped in the clamping groove through rotation, and the end part of the support rod 9-2 which is not connected with the bottom frame 9-1 is detachably fixed with an arc bending plate 10-1 with a larger diameter. The support frame with the structure has stronger rigidity and high structural stability, and can well meet the supporting work of the heating element 10.
As a preferable scheme of detachable fixation in the technical scheme, a screw hole is formed in the end part of the supporting rod 9-2, which is not connected with the underframe 9-1, an adjusting screw rod 9-4 is screwed in the screw hole, a connecting block is sleeved at the end part of the adjusting screw rod 9-4, which is leaked out of the screw hole, in a rotating way, a mounting block with a concave part is fixed on a circular arc bending plate 10-1 with a larger diameter, and the connecting block is embedded in the mounting block and is inserted with a pin shaft in a joint way to realize detachable fixation. In this way, the position of the heating element 10 can be finely adjusted by screwing the adjusting screw 9-4 in specific use, and the use is more convenient.
Further, the underframe 9-1 is welded or detachably fixed on the machine tool body 1. The whole support frame cannot be replaced by adopting a welding mode, and only one installation position of the heating element 10 can be provided; the whole support frame can be replaced by adopting detachable fixation, and the requirement of the installation positions of the heating elements 10 with various different heights can be met by replacing the support frame, preferably the detachable fixation.
For the installation and fixation of the heating element 10, the support can be firmer by using the auxiliary reinforcing ribs and other structures which can be detachably fixed together with the support rod 9-2.
As a preferable installation mode of the inner rotating wheel 6, a rotating shaft installation frame is fixed at the end part of the rotating wheel frame 7, a rotating shaft is supported by the rotating shaft installation frame through a bearing, and the inner rotating wheel 6 is fixedly sleeved on the rotating shaft. Specifically, in order to ensure that the axial direction and the radial direction can be stressed, the support of the rotating shaft is more reliable, and three bearings are arranged, namely a self-aligning roller bearing, a thrust self-aligning bearing and a tapered roller bearing.
Further, the driving assembly 8 is composed of an infeed mechanism and a longitudinal infeed mechanism. The transverse feeding mechanism and the longitudinal feeding mechanism only need to adopt the conventional driving structure of the existing spinning machine.
While the above detailed construction and dimensional data have been provided for the purpose of illustrating the preferred embodiments of the present invention, the present invention is not limited to the embodiments, and various equivalent modifications and substitutions can be made by one skilled in the art without departing from the spirit of the present invention, and are intended to be included in the scope of the present invention as defined in the appended claims.

Claims (5)

1. The internal rotation spinning machine comprises a machine tool body (1), wherein the machine tool body (1) is provided with a main shaft (2), and the main shaft (2) is fixedly connected with a connecting seat (3) for installing a blank, and is characterized in that: the rotary wheel frame (7) is connected with a driving assembly (8) for driving the rotary wheel frame (7) to move transversely and longitudinally, the driving assembly (8) is connected with a control device of the machine tool body (1), and the two internal rotary wheels (6) are propped against the inner side of a blank to finish spinning; the connecting seat (3) is fixedly provided with a chuck (11) concentric with the connecting seat (3), the chuck (11) is detachably fixed on the connecting seat (3), at least three movable claws (12) capable of radially moving are uniformly distributed on the chuck (11), the side surface of the chuck (11) is provided with an adjusting hole (13) for adjusting the radial position of the movable claws (12), and the movable claws (12) support a blank by abutting against the inner wall of the blank; the machine tool comprises a machine tool body (1), and is characterized by further comprising an outer mold (4), wherein one end face of the outer mold (4) is provided with a plurality of screw holes, the outer edge part of the end face of the chuck (11) is provided with a matching hole (5) corresponding to the screw holes, the screw holes and the matching hole (5) are inserted into bolts jointly to fix the outer mold (4) on the chuck (11), a supporting frame is additionally arranged on the machine tool body (1), the supporting frame is detachably fixed with a heating element (10), the heating element (10) comprises two coaxial arc bending plates (10-1) with unequal diameters, a gap (10-2) for accommodating a blank is formed between the two arc bending plates (10-1), the plane ends of the two arc bending plates (10-1) far away from the connecting seat (3) are connected through a fan-shaped connecting plate (10-3), the arc bending plates (10-1) are provided with heating pipes (10-4), the heating pipes (10-4) are electrically connected with a control device of the machine tool body (1), the supporting frame comprises an underframe (9-1) fixed on the machine tool body (1), the underframe (9-1) is provided with a supporting plate (9-9), the top of the underframe (9-1) is provided with a supporting plate (9), the middle part of the supporting rod (9-2) can be clamped in the clamping groove through rotation, and the end part of the supporting rod (9-2) which is not connected with the underframe (9-1) is detachably fixed with an arc bending plate (10-1) with a larger diameter.
2. The internal rotation spinning machine according to claim 1, characterized in that: and a lifting device (14) for lifting and supporting the heating element (10) is arranged on the machine tool body (1) in a matching way.
3. The internal rotation spinning machine according to claim 1, characterized in that: the end part of the supporting rod (9-2) which is not connected with the underframe (9-1) is provided with a screw hole, an adjusting screw (9-4) is screwed in the screw hole, the end part of the adjusting screw (9-4) exposed out of the screw hole is rotatably sleeved with a connecting block, an arc bending plate (10-1) with a larger diameter is fixedly provided with a mounting block with a concave part, and the connecting block is embedded in the mounting block and is inserted with a pin shaft jointly to realize detachable fixation.
4. The internal rotation spinning machine according to claim 1, characterized in that: the underframe (9-1) is welded or detachably fixed on the machine tool body (1).
5. The internal rotation spinning machine according to claim 1, characterized in that: the end part of the rotating wheel frame (7) is fixedly provided with a rotating shaft mounting frame, the rotating shaft mounting frame is supported with a rotating shaft through a bearing, and the inner rotating wheel (6) is fixedly sleeved on the rotating shaft.
CN201811202999.2A 2018-10-16 2018-10-16 Internal rotation spinning machine Active CN109175054B (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
CN201811202999.2A CN109175054B (en) 2018-10-16 2018-10-16 Internal rotation spinning machine

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CN109175054B true CN109175054B (en) 2024-02-02

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Publication number Priority date Publication date Assignee Title
CN113020386B (en) * 2021-03-01 2022-03-15 上海交通大学 Multi-stage external rib cylinder rotary extrusion forming equipment and method

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1367054A (en) * 2002-03-07 2002-09-04 华南理工大学 Spin forming method and its equipment
CN203635710U (en) * 2013-12-20 2014-06-11 华南理工大学 Power coupling spin-forming apparatus
JP2015139804A (en) * 2014-01-29 2015-08-03 川崎重工業株式会社 Spinning molding device
CN104858286A (en) * 2015-05-15 2015-08-26 航天特种材料及工艺技术研究所 Spinning device
CN106270084A (en) * 2016-09-06 2017-01-04 哈尔滨工业大学 A kind of for molding large thin-wall tube-shaped element Opposite roller spinning equipment
CN106391809A (en) * 2016-09-20 2017-02-15 西安交通大学 Full-electricity servo type dispersing multi-power large horizontal opposite roller spinning equipment
CN108273866A (en) * 2018-01-26 2018-07-13 烟台台海材料科技有限公司 A kind of seamless pipe and preparation method thereof
CN108500108A (en) * 2017-02-27 2018-09-07 湖北三江航天红阳机电有限公司 Circumferential muscle cylinder spinning tool and manufacturing process in a kind of band
CN208866217U (en) * 2018-10-16 2019-05-17 山西众立法兰有限公司 Inner-rotary type spinning machine

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1367054A (en) * 2002-03-07 2002-09-04 华南理工大学 Spin forming method and its equipment
CN203635710U (en) * 2013-12-20 2014-06-11 华南理工大学 Power coupling spin-forming apparatus
JP2015139804A (en) * 2014-01-29 2015-08-03 川崎重工業株式会社 Spinning molding device
CN104858286A (en) * 2015-05-15 2015-08-26 航天特种材料及工艺技术研究所 Spinning device
CN106270084A (en) * 2016-09-06 2017-01-04 哈尔滨工业大学 A kind of for molding large thin-wall tube-shaped element Opposite roller spinning equipment
CN106391809A (en) * 2016-09-20 2017-02-15 西安交通大学 Full-electricity servo type dispersing multi-power large horizontal opposite roller spinning equipment
CN108500108A (en) * 2017-02-27 2018-09-07 湖北三江航天红阳机电有限公司 Circumferential muscle cylinder spinning tool and manufacturing process in a kind of band
CN108273866A (en) * 2018-01-26 2018-07-13 烟台台海材料科技有限公司 A kind of seamless pipe and preparation method thereof
CN208866217U (en) * 2018-10-16 2019-05-17 山西众立法兰有限公司 Inner-rotary type spinning machine

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