CN114054507A - Transverse rolling tube process method - Google Patents

Transverse rolling tube process method Download PDF

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Publication number
CN114054507A
CN114054507A CN202111570204.5A CN202111570204A CN114054507A CN 114054507 A CN114054507 A CN 114054507A CN 202111570204 A CN202111570204 A CN 202111570204A CN 114054507 A CN114054507 A CN 114054507A
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CN
China
Prior art keywords
tube blank
tube
mandrel
spinning
blank
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202111570204.5A
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Chinese (zh)
Inventor
仇云龙
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhongxing Energy Equipment Co Ltd
Original Assignee
Zhongxing Energy Equipment Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zhongxing Energy Equipment Co Ltd filed Critical Zhongxing Energy Equipment Co Ltd
Publication of CN114054507A publication Critical patent/CN114054507A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
    • B21C1/16—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes
    • B21C1/22—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes specially adapted for making tubular articles
    • B21C1/24—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes specially adapted for making tubular articles by means of mandrels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B19/00—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work
    • B21B19/12—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work the axes of the rollers being arranged essentially parallel to the axis of the work
    • B21B19/16—Rolling tubes without additional rollers arranged inside the tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B25/00—Mandrels for metal tube rolling mills, e.g. mandrels of the types used in the methods covered by group B21B17/00; Accessories or auxiliary means therefor ; Construction of, or alloys for, mandrels or plugs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/16—Control of thickness, width, diameter or other transverse dimensions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/46—Roll speed or drive motor control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B39/02—Feeding or supporting work; Braking or tensioning arrangements, e.g. threading arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
    • B21C1/16—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes
    • B21C1/32—Feeding or discharging the material or mandrels

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

Abstract

The invention discloses a transverse rolling tube process method, which comprises the following steps: providing a mandrel and a plurality of spinning wheels circumferentially arranged about the mandrel, the spinning wheels configured to rotate circumferentially about the mandrel; pushing the tube blank sleeved on the core rod to feed the tube blank to the rotary wheel along the axial direction of the core rod; the front end of the tube blank passes through the rotary wheel, and the rotary wheel is tightly attached to the outer wall of the tube blank and rotates around the circumference of the tube blank so as to apply pressure to the front end of the tube blank to thin the front end of the tube blank to form a processed section; the machined section which has passed through the spinning wheel is clamped and the tube blank is drawn to continue through the spinning wheel while the spinning wheel continues to rotate circumferentially around the tube blank to apply pressure to the remaining portion of the tube blank to thin the remaining portion of the tube blank. The spinning and drawing processing technology is combined, so that the processing efficiency is improved, and the plastic forming performance of metal can be ensured; the method does not generate waste materials, and the structure and the mechanical property of the pipe are obviously improved by the plastic flow and extrusion of the metal.

Description

Transverse rolling tube process method
Technical Field
The invention relates to the field of metal processing, in particular to a process method for transversely rolling a pipe.
Background
For pipe processing, drawing, powerful spinning, hot rolling and other processing technologies are common. The drawing and spinning can greatly improve the performance of the pipe fitting, and the drawing mainly aims at metal with good plasticity and easy deformation, and the spinning processing has wider range of machinable materials but lower efficiency. Therefore, in order to ensure the efficiency and the processing range of the pipe, it is necessary to improve and innovate the existing processing device.
Disclosure of Invention
According to one aspect of the present invention, there is provided a cross-rolled tube process comprising the steps of:
providing a mandrel and a plurality of capstans arranged circumferentially about the mandrel, the capstans configured to rotate circumferentially about the mandrel;
pushing the tube blank sleeved on the core rod to feed the tube blank to the rotary wheel along the axial direction of the core rod;
the front end of the tube blank passes through the rotary wheel, and the rotary wheel is tightly attached to the outer wall of the tube blank and rotates around the circumference of the tube blank so as to apply pressure to the front end of the tube blank and thin the front end of the tube blank to form a processed section;
the machined section which has passed through the spinning wheel is clamped and the tube blank is drawn to continue through the spinning wheel while the spinning wheel continues to rotate circumferentially around the tube blank to apply pressure to the remaining portion of the tube blank to thin the remaining portion of the tube blank.
In some embodiments, the axial feed rate of the tube blank when forming the worked section is a first feed rate and the rotational speed of the spinning wheel about the tube blank is a first rotational speed;
when the remaining part of the tube blank is machined, the axial feeding speed of the tube blank is a second feeding speed, and the rotating speed of the rotary wheel around the tube blank is a second rotating speed;
wherein the first feeding speed is less than the second feeding speed, and the first rotating speed is greater than the second rotating speed.
In some embodiments, the relative position of the spinning wheel in the radial direction of the mandrel is adjusted in accordance with a target reduction amount prior to forming the machined segment.
In some embodiments, the tube blank is pushed into the spinning wheel by a feed push plate that is movable in the axial direction of the mandrel.
In some embodiments, the central axis of the spinning roller is parallel to the axial direction of the mandrel, and the tube blank is spin-worked by a plurality of spinning rollers which orbit around the tube blank on the same plane.
In some embodiments, there are three spinning wheels, which are circumferentially spaced about the mandrel.
In some embodiments, the tube blank is thinned by at least two sets of spinning wheels; the at least two groups of spinning wheels are arranged at intervals along the axial direction of the mandrel, and each group of spinning wheels respectively corresponds to a common circumcircle; the diameters of these common circumscribed circles decrease in the feed direction of the tube blanks.
In some embodiments, the mandrel is held stationary while rolling the tube billet.
In some embodiments, the tube blank does not rotate when rolling the tube blank.
In some embodiments, the tube blank is drawn by a drawing jaw provided to be capable of reciprocating in the axial direction of the mandrel, the opening width of the drawing jaw being adjustable.
The beneficial effects of the invention include:
(1) the spinning and drawing processing technologies are combined, so that the processing efficiency is improved, the plastic forming performance of the metal can be guaranteed, particularly, plastic processing can be performed on the metal difficult to deform, a new thought is provided, and the metal processing mode is expanded;
(2) the processing mode does not generate waste materials basically in the processing process, and the metal plastic flow and extrusion in the process can obviously improve the organization and the mechanical property of the finished pipe fitting.
Drawings
Fig. 1 is a schematic structural diagram of a rolled tube apparatus used in a transverse rolled tube process according to an embodiment of the present invention.
FIG. 2 is a schematic diagram of the operation of the cross rolling tube process according to an embodiment of the present invention.
FIG. 3 is a schematic view of the circumferential arrangement of the rotary wheels in the transverse tube rolling process according to an embodiment of the present invention.
Description of the symbols:
1-Clamp for drawing
2-core rod
3-feed pusher plate
4-spinning wheel
5-tube blank
5' -processed stage
5 "-unprocessed section
n1-a first rotational speed
v1-a first feed speed
n2-a second rotational speed
v2-a second feed speed
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only preferred embodiments of the present invention, rather than all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Please refer to fig. 1-3 to understand the method of the present embodiment. The embodiment provides a transverse rolled tube process method, which comprises the following steps:
providing a mandrel 2 and a plurality of spinning wheels 4 arranged circumferentially about the mandrel 2, the spinning wheels 4 configured to rotate circumferentially about the mandrel 2;
pushing the tube blank 5 sleeved on the mandrel 2 to feed the tube blank 5 to the rotary wheel 4 along the axial direction of the mandrel 2;
while the front end of the tube blank 5 passes through the rotary wheel 4, the rotary wheel 4 is tightly attached to the outer wall of the tube blank 5 and rotates around the circumference of the tube blank 5 so as to apply pressure to the front end of the tube blank 5 and thin the front end of the tube blank 5 to form a processed section 5';
the machined section 5' that has passed through the spinning wheel 4 is clamped and the tubular blank 5 is drawn further through the spinning wheel 4 while the spinning wheel 4 continues to rotate circumferentially around the tubular blank 5 to apply pressure to the remaining portion of the tubular blank 5 to thin the remaining portion of the tubular blank 5.
The mandrel bar 2 is detachably provided, and when rolling the hollow tube 5, the hollow tube 5 is not rotated, the mandrel bar 2 is also held stationary, that is, the position of the mandrel bar 2 is not changed and the mandrel bar 2 is not rotated, and the rotor 4 is closely attached to the hollow tube 5 and revolves with respect to the hollow tube 5. The diameter of the common circumscribed circle defined by the plurality of rotary wheels 4 is set to be smaller than the outer diameter of the tube blank 5, and when the rotary wheels 4 orbit the outer periphery of the tube blank 5, the rotary wheels 4 can press and deform the tube blank 5, so that the tube blank 5 is thinned.
The tube blank 5 can be pushed into the area surrounded by these spinning wheels 4 by a feed push plate 3 movable in the axial direction of the mandrel 2. The spinning roller 4 forms a thinned worked section 5' by spinning at the front end of the tube blank 5. After the machined section 5 'has passed through the spinning wheel 4, the axially movable drawing jaws 1 grip the machined section 5' of the tube blank 5 and draw the tube blank 5, drawing the tube blank 5 so that the tube blank 5 continues to pass through the spinning wheel 4, spinning the remainder of the tube blank 5. In some embodiments, the drawing clamp 1 is configured to be capable of reciprocating along the axial direction of the mandrel 2, and the opening amplitude of the drawing clamp 1 is adjustable.
The tube blank 5 is processed by the spinning of the spinning wheel 4 and simultaneously is drawn, the combination of the spinning and the drawing can improve the processing efficiency and simultaneously ensure the plastic forming performance of metal, and particularly, the plastic processing can be carried out on the metal difficult to deform, thereby providing a new idea and expanding the metal processing mode. The processing mode does not generate waste materials basically in the processing process, and the metal plastic flow and extrusion in the process can obviously improve the organization and the mechanical property of the finished pipe fitting.
In some embodiments, the relative position of the spinning wheel 4 in the radial direction of the mandrel 2 is adjusted according to the target reduction amount before forming the machined segment 5'. For example, the distance from the working portion of the spinning wheel 4 to the mandrel bar 2 is changed by moving the spinning wheel 4 radially closer to or farther from the mandrel bar 2, and the multiple batches and sizes of the hollow shell 5 can be machined by such adjustment.
In some embodiments, the central axis of the spinning roller 4 is parallel to the axial direction of the mandrel 2, and the tube blank 5 is spin-worked by a plurality of spinning rollers 4 which orbit around the tube blank 5 on the same plane perpendicular to the mandrel 2. The rotary wheel 4 can rotate around the central axis of the rotary wheel, and can also rotate around the circumferential direction of the tube blank 5. Preferably, there are three spinning wheels 4, the three spinning wheels 4 being circumferentially and evenly distributed around the mandrel 2.
In some embodiments, the axial feed rate of the tube blank 5 in forming the worked section 5' is a first feed rate v1The rotating speed of the rotary wheel 4 around the tube blank 5 is a first rotating speed n1(ii) a The axial feed rate of the raw tube 5 is set to a second feed rate v when the remaining portion of the raw tube 5 is worked2The rotating speed of the rotary wheel 4 around the tube blank 5 is a second rotating speed n2(ii) a Wherein the first feeding speed v1Is less than the second feeding speed v2First rotational speed n1Greater than a second speed n2. For example, a stainless steel pipe blank 5 with an outer diameter of phi 17mm and an inner diameter of phi 13mm is used as a processing raw material, and the relative position of a rotary wheel 4 is adjusted to a target thinning amount; then inserting the disassembled core rod 2 with the diameter of 13mm into the tube blank 5, and putting the two into a rack; adjusting the position of the feeding push plate 3 to enable the pipe blank 5 to be tightly attached to the outer side of the rotary wheel 4; subsequently the spinning wheel 4 starts to rotate at a first speed n1When the pipe blank 5 is rotated at 400r/min, the feeding push plate 3 pushes the pipe blank 5 at a first feeding speed v1The primary processing is realized by feeding the steel sheet 0.5 mm/s; after a processed section 5 'is processed at the front end of the tube blank 5, the position of the drawing clamp is adjusted to enable the drawing clamp 1 to clamp the processed section 5', and the second rotating speed n of the rotary wheel 4 is adjusted2＝(0.6～0.8)n1And adjusting the speed of the drawing clamp to finally make the pipe blank 5 at a second feeding speed v2＝2v1The feeding is started when the raw section 5 "of the tube blank 5 is cross-rolled.
In some embodiments, the tube blank 5 is thinned by at least two sets of spinning wheels 4; the at least two groups of spinning wheels 4 are arranged at intervals along the axial direction of the mandrel 2, and each group of spinning wheels 4 respectively corresponds to a common circumscribed circle; the diameters of these common circumscribed circles decrease in the feed direction of the tube blank 5. In the present embodiment, the hollow shell 5 is first spun by the set of spinning rollers 4 farther from the mandrel bar 2, and then further spun by the set of spinning rollers 4 closer to the mandrel bar 2, so that the hollow shell is pierced once and thinned twice.
What has been described above are merely some embodiments of the present invention. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the inventive concept thereof, and these changes and modifications can be made without departing from the spirit and scope of the invention.

Claims (10)

1. The transverse rolling tube process method is characterized by comprising the following steps:
providing a mandrel and a plurality of capstans arranged circumferentially about the mandrel, the capstans configured to rotate circumferentially about the mandrel;
pushing the tube blank sleeved on the mandrel to feed the tube blank to the rotary wheel along the axial direction of the mandrel;
the front end of the tube blank passes through a rotary wheel, and the rotary wheel is tightly attached to the outer wall of the tube blank and rotates around the circumference of the tube blank so as to apply pressure to the front end of the tube blank and thin the front end of the tube blank to form a processed section;
and clamping the machined section which passes through the rotary wheel, drawing the tube blank to continuously pass through the rotary wheel, and simultaneously, continuously rotating the rotary wheel around the circumference of the tube blank to apply pressure to the remaining part of the tube blank so as to thin the remaining part of the tube blank.
2. A cross-rolling tube process method as claimed in claim 1, wherein the axial feeding speed of the tube blank at the time of forming the worked section is a first feeding speed, and the rotation speed of the rotary wheel around the tube blank is a first rotation speed;
when the remaining part of the tube blank is machined, the axial feeding speed of the tube blank is a second feeding speed, and the rotating speed of the rotary wheel around the tube blank is a second rotating speed;
wherein the first feeding speed is less than the second feeding speed, and the first rotating speed is greater than the second rotating speed.
3. The cross-rolled tube process of claim 1, wherein the relative position of the spinning wheel in the radial direction of the mandrel is adjusted according to the target reduction amount before the formed segment.
4. A cross-rolling tube process as claimed in claim 1 wherein the tube stock is pushed into the spinning wheel by a feed push plate movable in the axial direction of the mandrel.
5. A cross-rolled pipe process method according to any one of claims 1 to 4, wherein the center axis of the spinning roller is parallel to the axial direction of the mandrel, and the hollow shell is spin-worked by a plurality of spinning rollers which orbit the hollow shell on the same plane.
6. The cross-rolled tube process of claim 5, wherein there are three spinning wheels circumferentially spaced around the mandrel.
7. A cross-rolled tube process method as claimed in claim 1, wherein the tube stock is thinned by at least two sets of spinning wheels; the at least two groups of spinning wheels are arranged at intervals along the axial direction of the mandrel, and each group of spinning wheels respectively corresponds to a common circumcircle; the diameters of these common circumscribed circles decrease in the feed direction of the tube blanks.
8. A cross-rolled pipe process as claimed in claim 1 wherein the mandrel is held stationary while rolling the pipe billet.
9. A cross-rolled pipe process as claimed in claim 1 wherein said pipe blank is not rotated while rolling the pipe blank.
10. A transverse rolled pipe process as claimed in claim 1 wherein the stock pipe is drawn by a draw clamp arranged to be reciprocally movable in the axial direction of the mandrel, the draw clamp having an adjustable opening amplitude.
CN202111570204.5A 2020-12-31 2021-12-21 Transverse rolling tube process method Pending CN114054507A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202011616611.0A CN112605126A (en) 2020-12-31 2020-12-31 Transverse rolling tube process method
CN2020116166110 2020-12-31

Publications (1)

Publication Number Publication Date
CN114054507A true CN114054507A (en) 2022-02-18

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Application Number Title Priority Date Filing Date
CN202011616611.0A Pending CN112605126A (en) 2020-12-31 2020-12-31 Transverse rolling tube process method
CN202123236043.4U Active CN216540196U (en) 2020-12-31 2021-12-21 Tube rolling device
CN202111570204.5A Pending CN114054507A (en) 2020-12-31 2021-12-21 Transverse rolling tube process method

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Application Number Title Priority Date Filing Date
CN202011616611.0A Pending CN112605126A (en) 2020-12-31 2020-12-31 Transverse rolling tube process method
CN202123236043.4U Active CN216540196U (en) 2020-12-31 2021-12-21 Tube rolling device

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117564118B (en) * 2024-01-16 2024-03-19 亚太轻合金(南通)科技有限公司 Aluminum alloy battery shell drawing tool

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CN216540196U (en) 2022-05-17
CN112605126A (en) 2021-04-06

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