CN104959482B - Rolling bending equipment and method for machining flange blank - Google Patents

Rolling bending equipment and method for machining flange blank Download PDF

Info

Publication number
CN104959482B
CN104959482B CN201510304635.5A CN201510304635A CN104959482B CN 104959482 B CN104959482 B CN 104959482B CN 201510304635 A CN201510304635 A CN 201510304635A CN 104959482 B CN104959482 B CN 104959482B
Authority
CN
China
Prior art keywords
oil cylinder
steel plate
workpiece
bending
flange 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.)
Active
Application number
CN201510304635.5A
Other languages
Chinese (zh)
Other versions
CN104959482A (en
Inventor
宋丽华
康俊远
梅子翘
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.)
Guangdong Industry Technical College
Original Assignee
Guangdong Industry Technical College
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 Guangdong Industry Technical College filed Critical Guangdong Industry Technical College
Priority to CN201510304635.5A priority Critical patent/CN104959482B/en
Publication of CN104959482A publication Critical patent/CN104959482A/en
Application granted granted Critical
Publication of CN104959482B publication Critical patent/CN104959482B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • B21D53/00Making other particular articles
    • B21D53/16Making other particular articles rings, e.g. barrel hoops

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)

Abstract

The invention discloses rolling bending equipment and a method for machining a flange blank. The equipment comprises a reversing working table, a compressing mechanism and a bending mechanism; a workpiece is arranged on the reversing working table, the compressing mechanism is arranged above the workpiece, and the bending mechanism is arranged on the outer side of the workpiece; the bending mechanism comprises a fixed bending oil cylinder, a rotating bending oil cylinder, a rotating oil cylinder and an oil cylinder rotary table; the fixed bending oil cylinder and the rotating bending oil cylinder are both arranged on the outer side of the workpiece; the fixed bending oil cylinder is connected with the rotating bending oil cylinder through the rotating oil cylinder; and the rotating bending oil cylinder slides in the oil cylinder rotating table. The method comprises the steps that according to the circumference of a flange, a steel plate is cut to be in a strip shape, the length of the steel plate and the circumference of the flange are the same, and the width and the thickness of the steel plate are the same as the width and the thickness of the flange blank; and the strip-shaped steel plate is rolled and bent to form a round, and then is welded at a joint, and the steel plate can serve as the flange blank to be used. According to the equipment and method, the strip-shaped steel plate can be rolled and bent to form the flange blank, the material cost can be effectively saved, and the efficient large-batch production requirements can be met.

Description

Roll bending Apparatus and method for for flange blank processing
Technical field
The present invention relates to machine components processing technique field, particularly to a kind of rolling for flange blank processing Curved Apparatus and method for.
Background technology
Flange joint is mainly used in pipeline and pipe fitting and the connection of auxiliary device, much should have when pipeline connects With, it is mainly characterized by convenient disassembly, intensity height, good seal performance.In current flange processing technique, It is usually after using steel plate air cutting to circularize blank, is further processed into flange.But, some are used For the flange of larger caliber pipeline, use traditional handicraft, it is necessary to use the steel plate air cutting that diameter is the biggest Circularize blank, a large amount of wastes of steel can be caused, add the manufacturing cost of flange.
Summary of the invention
It is an object of the invention to overcome the deficiencies in the prior art, it is provided that a kind of rolling for flange blank processing Curved equipment, this equipment can realize becoming the steel plate roll and bend forming of strip flange blank, and effectively save material becomes This, can meet efficient large batch of Production requirement.
Another object of the present invention is to provide a kind of processed for flange blank by what the said equipment realized Roll bending method.
The technical scheme is that a kind of roll bending equipment for flange blank processing, including work of reversing Platform, hold-down mechanism and bending mechanism, workpiece is located at and reverses on workbench, and hold-down mechanism is located at above workpiece, Bending mechanism is located at outside workpiece;Bending mechanism includes stationary curved oil cylinder, rotation bending oil cylinder, rotates oil Cylinder and oil cylinder rotary table, stationary curved oil cylinder and rotation bending oil cylinder are respectively arranged on the outside of workpiece, fixed bend Being connected by rotational fuel tank between bent oil cylinder and rotation bending oil cylinder, rotation bending oil cylinder slides on oil cylinder revolution In platform.Wherein, stationary curved oil cylinder matches with rotation bending oil cylinder, and the roll bending for workpiece processes;Turn Rotation bending oil cylinder is played a driving role by dynamic oil cylinder, in conjunction with the rotary action of the workbench that reverses, makes rotation bending Oil cylinder carries out arc sliding in oil cylinder rotary table, it is achieved workpiece is carried out roll bending.Form each of roll bending equipment Part is mounted on machine body, machine body is additionally provided with operation bench, in order to the manipulation to each mechanism.
The described workbench that reverses includes electric rotating machine, transmission component, rotary shaft, base, work top and steel Plate positioning clamping fixture, electric rotating machine is connected with the lower end of rotary shaft by transmission component, passes through axle in the middle part of rotary shaft Holding and be connected with inside base, work top is located at above base, and steel plate positioning clamping fixture is located at above work top, Work top and steel plate positioning clamping fixture are fixing with the upper end of rotary shaft respectively to be connected.
Described transmission component is gear-driven assembly or pulley drive assembly.
Described work top and steel plate positioning clamping fixture are respectively cylindrical-shaped structure, and the diameter of work top is more than steel The diameter of plate positioning clamping fixture;The medial surface of workpiece connects with the lateral surface of steel plate positioning clamping fixture, the bottom surface of workpiece Connect with the end face of work top.
Described hold-down mechanism includes steel plate compressed oil cylinder and steel plate friction top, and steel plate compressed oil cylinder is located at steel plate pressure The tightly side of covering, steel plate friction top is located at above work top, drives steel plate friction top by steel plate compressed oil cylinder Rise or fall, thus Work-sheet pressing or is unclamped workpiece to take out on the workbench that reverses;Steel plate compresses During lid workpiece pressing, the medial surface of steel plate friction top connects with the lateral surface of steel plate positioning clamping fixture, and steel plate compresses The bottom surface of lid connects with the end face of workpiece.
In described bending mechanism, oil cylinder rotary table is provided with arc track, and rotation bending oil cylinder is along curved track Road slides.
On described oil cylinder rotary table, the angle that rotation bending oil cylinder slides in arc track is 0~20 °.
In described bending mechanism, arrange in angle between rotation bending oil cylinder and stationary curved oil cylinder, rotate curved When bent oil cylinder is positioned at the initial position of oil cylinder rotary table, the folder between rotation bending oil cylinder and stationary curved oil cylinder Angle is 30 °, and during i.e. rotation bending oil cylinder slides along arc track, rotation bending oil cylinder is with solid Determining the angle between curved cylinder is 30~50 °.
When the said equipment uses, its principle is: according to flange girth, only need to by steel plate cut growth strip, Its length is identical with flange girth, and width is identical with the width of flange blank and thickness with thickness, strip Shape steel plate roll bending Cheng Yuanhou is welded at seam, can be used as flange blank and uses.
A kind of roll bending method for flange blank processing can be realized by the said equipment, specifically include following step Rapid:
(1) first width and thickness by flange has stayed allowance, then length of run cutting of steel circumferentially Plate, the steel plate of well cutting is as workpiece;
(2) workpiece is installed on reverses on workbench, and by hold-down mechanism, workpiece is fixed;
(3) stationary curved oil cylinder and rotation bending oil cylinder respectively against workpiece outside, the workbench that reverses drive When workpiece rotates, in conjunction with rotation and the impetus of rotational fuel tank of workpiece, rotation bending oil cylinder also slides on In oil cylinder rotary table;
(4) workbench that reverses carries out reciprocating rotation, and stationary curved oil cylinder is the most afterburning with rotation bending oil cylinder, Segmentation is by workpiece gradually roll bending, until workpiece is overall round as a ball;
(5) according to Len req, cut away the part that workpiece two ends are unnecessary, then incited somebody to action by stationary curved oil cylinder Joint is round as a ball, is then welded joint, continues through at stationary curved oil cylinder rolled joint after welding, Eliminating welding deformation, now flange blank is formed.
Wherein, in described step (2), when workpiece is installed, workpiece is positioned on work top, and sets In the side of steel plate positioning clamping fixture, then steel plate compressed oil cylinder promotes steel plate friction top to decline, and makes steel plate compress Workpiece is fixed and clamped by lid;
In described step (3), when rotation bending oil cylinder slides in oil cylinder rotary table, rotation bending oil cylinder Slide along the arc track in oil cylinder rotary table;
In described step (4), workpiece overall by round as a ball time, particularly as follows: steel plate positioning clamping fixture pressed by workpiece External diameter is that diameter is round as a ball;
In described step (5), after flange blank is formed, stationary curved oil cylinder and rotation bending oil cylinder are respectively Retreating, then steel plate compressed oil cylinder drives steel plate friction top to rise, and steel plate friction top departs from steel plate positioning clamping fixture After, from steel plate positioning clamping fixture, directly take off ring-type flange blank.
The present invention, relative to prior art, has the advantages that
This can realize the steel plate roll and bend forming of strip for the roll bending Apparatus and method for of flange blank processing Become flange blank, effectively save material cost, efficient large batch of Production requirement can be met.
This is in the roll bending equipment of flange blank processing, can be according to the need of different flange machining blanks sizes Want, the steel plate positioning clamping fixture of quick-replaceable corresponding size specification, and can compress rapidly and add for manufacturing flange The steel plate of work blank, owing to using hydraulic jack to carry out roll bending, has that pressure is big and the feature of fast response time, The demand the most quickly produced can be realized.
This is in the roll bending equipment of flange blank processing, and the order that numerical control also can be used to control each parts is moved Making, each roll bending amount is accurately controlled.
Accompanying drawing explanation
Fig. 1 is this structural representation for the roll bending equipment of flange blank processing.
Fig. 2 is the structural representation of bending mechanism on A-A direction in Fig. 1.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention It is not limited to this.
Embodiment
A kind of roll bending equipment for flange blank processing of the present embodiment, as it is shown in figure 1, include work of reversing Platform 1, hold-down mechanism 2 and bending mechanism 3, workpiece is located at and reverses on workbench, and workpiece is located at by hold-down mechanism Top, bending mechanism is located at outside workpiece;As in figure 2 it is shown, bending mechanism include stationary curved oil cylinder 6, Rotation bending oil cylinder 7, rotational fuel tank 8 and oil cylinder rotary table 9, stationary curved oil cylinder and rotation bending oil cylinder It is respectively arranged on the outside of workpiece 10, between stationary curved oil cylinder and rotation bending oil cylinder by rotational fuel tank even Connecing, rotation bending oil cylinder slides in oil cylinder rotary table.Wherein, stationary curved oil cylinder and rotation bending oil cylinder Matching, the roll bending for workpiece processes;Rotation bending oil cylinder is played a driving role by rotational fuel tank, in conjunction with returning The rotary action of station of starting building, makes rotation bending oil cylinder carry out arc sliding in oil cylinder rotary table, it is achieved right Workpiece carries out roll bending.The each several part of composition roll bending equipment is mounted on machine body 4, on machine body also It is provided with operation bench 5, in order to the manipulation to each mechanism.
As it is shown in figure 1, reverse, workbench includes electric rotating machine 11, transmission component 12, rotary shaft 13, the end Seat 14, work top 15 and steel plate positioning clamping fixture 16, electric rotating machine is by under transmission component and rotary shaft End connects, and is connected with inside base by bearing in the middle part of rotary shaft, and work top is located at above base, steel plate Positioning clamping fixture is located at above work top, and work top and steel plate positioning clamping fixture are solid with the upper end of rotary shaft respectively Fixed connection.
Transmission component use gear-driven assembly, according to actual needs, it is possible to use pulley drive assembly or Other type of transmission component.
Work top and steel plate positioning clamping fixture are respectively cylindrical-shaped structure, and the diameter of work top is fixed more than steel plate The diameter of position mold;The medial surface of workpiece connects with the lateral surface of steel plate positioning clamping fixture, the bottom surface of workpiece and work The end face making table top connects.
As it is shown in figure 1, hold-down mechanism includes steel plate compressed oil cylinder 17 and steel plate friction top 18, steel plate compresses Oil cylinder is located at above steel plate friction top, and steel plate friction top is located at above work top, by steel plate compressed oil cylinder Drive steel plate friction top rise or fall, thus by Work-sheet pressing on the workbench that reverses or unclamp workpiece so that Take out;During steel plate friction top workpiece pressing, the medial surface of steel plate friction top and the lateral surface of steel plate positioning clamping fixture Connecting, the bottom surface of steel plate friction top connects with the end face of workpiece.
As in figure 2 it is shown, in bending mechanism, oil cylinder rotary table is provided with arc track, rotation bending oil cylinder edge Arc track to slide.On oil cylinder rotary table, the angle that rotation bending oil cylinder slides in arc track is 0~20 °.Arranging in angle between rotation bending oil cylinder and stationary curved oil cylinder, rotation bending oil cylinder is positioned at oil During the initial position of cylinder rotary table, the angle a between rotation bending oil cylinder and stationary curved oil cylinder is 30 °, During i.e. rotation bending oil cylinder slides along arc track, rotation bending oil cylinder and stationary curved oil cylinder it Between angle be 30~50 °, formed between rotation bending oil cylinder and stationary curved oil cylinder maximum angle b be 50°。
When the said equipment uses, its principle is: according to flange girth, only need to by steel plate cut growth strip, Its length is identical with flange girth, and width is identical with the width of flange blank and thickness with thickness, strip Shape steel plate roll bending Cheng Yuanhou is welded at seam, can be used as flange blank and uses.
A kind of roll bending method for flange blank processing can be realized by the said equipment, specifically include following step Rapid:
(1) first width and thickness by flange has stayed allowance, then length of run cutting of steel circumferentially Plate, the steel plate of well cutting is as workpiece;
(2) workpiece is installed on reverses on workbench, and by hold-down mechanism, workpiece is fixed; When workpiece is installed, workpiece is positioned on work top, and is located at the side of steel plate positioning clamping fixture, then steel Plate compressed oil cylinder promotes steel plate friction top to decline, and makes steel plate friction top be fixed and clamped by workpiece;
(3) stationary curved oil cylinder and rotation bending oil cylinder respectively against workpiece outside, the workbench that reverses drive When workpiece rotates, in conjunction with rotation and the impetus of rotational fuel tank of workpiece, rotation bending oil cylinder also slides on In oil cylinder rotary table;When rotation bending oil cylinder slides in oil cylinder rotary table, rotation bending oil cylinder is along oil cylinder Arc track in rotary table slides;
(4) workbench that reverses carries out reciprocating rotation at a slow speed, stationary curved oil cylinder and rotation bending oil cylinder by Gradually afterburning, segmentation is by workpiece gradually roll bending, until workpiece is overall, (i.e. steel plate positioning clamping fixture pressed by workpiece by round as a ball External diameter be that diameter is round as a ball);
(5) according to Len req, cut away the part that workpiece two ends are unnecessary, then incited somebody to action by stationary curved oil cylinder Joint is round as a ball, is then welded joint, continues through at stationary curved oil cylinder rolled joint after welding, Eliminating welding deformation, now flange blank is formed;
After flange blank is formed, stationary curved oil cylinder and rotation bending oil cylinder retreat respectively, and then steel plate compresses Oil cylinder drives steel plate friction top to rise, and after steel plate friction top departs from steel plate positioning clamping fixture, directly positions from steel plate Ring-type flange blank is taken off on mold.
As it has been described above, just can preferably realize the present invention, above-described embodiment is only presently preferred embodiments of the present invention, Not it is used for limiting the practical range of the present invention;The most all impartial changes made according to present invention and modification, All contained by the claims in the present invention scope required for protection.

Claims (10)

1. for the roll bending equipment of flange blank processing, it is characterised in that include reverse workbench, compression Mechanism and bending mechanism, workpiece is located at and reverses on workbench, and hold-down mechanism is located at above workpiece, bending mechanism It is located at outside workpiece;Bending mechanism includes stationary curved oil cylinder, rotation bending oil cylinder, rotational fuel tank and oil cylinder Rotary table, stationary curved oil cylinder and rotation bending oil cylinder are respectively arranged on the outside of workpiece, stationary curved oil cylinder and Being connected by rotational fuel tank between rotation bending oil cylinder, rotation bending oil cylinder slides in oil cylinder rotary table.
The most according to claim 1 for the roll bending equipment of flange blank processing, it is characterised in that institute State the workbench that reverses and include electric rotating machine, transmission component, rotary shaft, base, work top and steel plate location Mold, electric rotating machine is connected with the lower end of rotary shaft by transmission component, by bearing and the end in the middle part of rotary shaft Connecting inside Zuo, work top is located at above base, and steel plate positioning clamping fixture is located at above work top, work Table top and steel plate positioning clamping fixture are fixing with the upper end of rotary shaft respectively to be connected.
The most according to claim 2 for the roll bending equipment of flange blank processing, it is characterised in that institute Stating transmission component is gear-driven assembly or pulley drive assembly.
The most according to claim 2 for the roll bending equipment of flange blank processing, it is characterised in that institute Stating work top and steel plate positioning clamping fixture is respectively cylindrical-shaped structure, the diameter of work top positions more than steel plate The diameter of mold;The medial surface of workpiece connects with the lateral surface of steel plate positioning clamping fixture, the bottom surface of workpiece and work The end face of table top connects.
The most according to claim 2 for the roll bending equipment of flange blank processing, it is characterised in that institute Stating hold-down mechanism and include steel plate compressed oil cylinder and steel plate friction top, steel plate compressed oil cylinder is located on steel plate friction top Side, steel plate friction top is located at above work top;During steel plate friction top workpiece pressing, steel plate friction top interior Side connects with the lateral surface of steel plate positioning clamping fixture, and the bottom surface of steel plate friction top connects with the end face of workpiece.
The most according to claim 1 for the roll bending equipment of flange blank processing, it is characterised in that institute Stating in bending mechanism, oil cylinder rotary table is provided with arc track, and rotation bending oil cylinder slides along arc track.
The most according to claim 6 for the roll bending equipment of flange blank processing, it is characterised in that institute Stating on oil cylinder rotary table, the angle that rotation bending oil cylinder slides in arc track is 0~20 °.
The most according to claim 1 for the roll bending equipment of flange blank processing, it is characterised in that institute State in bending mechanism, arrange in angle between rotation bending oil cylinder and stationary curved oil cylinder, rotation bending oil cylinder When being positioned at the initial position of oil cylinder rotary table, the angle between rotation bending oil cylinder and stationary curved oil cylinder is 30°。
9. realize a kind of roll bending for flange blank processing according to equipment described in any one of claim 1~8 Method, it is characterised in that comprise the following steps:
(1) first width and thickness by flange has stayed allowance, then length of run cutting of steel circumferentially Plate, the steel plate of well cutting is as workpiece;
(2) workpiece is installed on reverses on workbench, and by hold-down mechanism, workpiece is fixed;
(3) stationary curved oil cylinder and rotation bending oil cylinder respectively against workpiece outside, the workbench that reverses drive When workpiece rotates, in conjunction with rotation and the impetus of rotational fuel tank of workpiece, rotation bending oil cylinder also slides on In oil cylinder rotary table;
(4) workbench that reverses carries out reciprocating rotation, and stationary curved oil cylinder is the most afterburning with rotation bending oil cylinder, Segmentation is by workpiece gradually roll bending, until workpiece is overall round as a ball;
(5) according to Len req, cut away the part that workpiece two ends are unnecessary, then incited somebody to action by stationary curved oil cylinder Joint is round as a ball, is then welded joint, continues through at stationary curved oil cylinder rolled joint after welding, Eliminating welding deformation, now flange blank is formed.
The most according to claim 9 for the roll bending method of flange blank processing, it is characterised in that institute State in step (2), when workpiece is installed, workpiece is positioned on work top, and be located at steel plate location tire The side of tool, then steel plate compressed oil cylinder promotes steel plate friction top to decline, and makes steel plate friction top be fixed by workpiece Compress;
In described step (3), when rotation bending oil cylinder slides in oil cylinder rotary table, rotation bending oil cylinder Slide along the arc track in oil cylinder rotary table;
In described step (4), workpiece overall by round as a ball time, particularly as follows: steel plate positioning clamping fixture pressed by workpiece External diameter is that diameter is round as a ball;
In described step (5), after flange blank is formed, stationary curved oil cylinder and rotation bending oil cylinder are respectively Retreating, then steel plate compressed oil cylinder drives steel plate friction top to rise, and steel plate friction top departs from steel plate positioning clamping fixture After, from steel plate positioning clamping fixture, directly take off ring-type flange blank.
CN201510304635.5A 2015-06-05 2015-06-05 Rolling bending equipment and method for machining flange blank Active CN104959482B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510304635.5A CN104959482B (en) 2015-06-05 2015-06-05 Rolling bending equipment and method for machining flange blank

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510304635.5A CN104959482B (en) 2015-06-05 2015-06-05 Rolling bending equipment and method for machining flange blank

Publications (2)

Publication Number Publication Date
CN104959482A CN104959482A (en) 2015-10-07
CN104959482B true CN104959482B (en) 2017-01-11

Family

ID=54213661

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510304635.5A Active CN104959482B (en) 2015-06-05 2015-06-05 Rolling bending equipment and method for machining flange blank

Country Status (1)

Country Link
CN (1) CN104959482B (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2790410B1 (en) * 1999-03-03 2001-05-18 Aerospatiale PROCESS FOR THE MANUFACTURE OF BLANKS OF FLANGES AND FLANGE OBTAINED BY THIS PROCESS
CN101406910B (en) * 2008-11-19 2011-08-03 大连华锐股份有限公司 Large-sized flange molding equipment and molding technique
CN103586317B (en) * 2013-09-30 2017-01-04 浙江伟联科技有限公司 Rotary bending apparatus
CN204194634U (en) * 2014-10-29 2015-03-11 苏州市金德誉精密机械有限公司 A kind of electric rolling round belting

Also Published As

Publication number Publication date
CN104959482A (en) 2015-10-07

Similar Documents

Publication Publication Date Title
CN104368939B (en) A kind of electronic rotation weld jig
CN101406910B (en) Large-sized flange molding equipment and molding technique
CN105729216A (en) Reciprocating type workpiece feeding device
CN105436302B (en) A kind of numerical control copper rod processing integrated machine
CN204247810U (en) Plate automatic rolling circle flanger
CN204771545U (en) Transversal joint welded platform
CN109605206B (en) Bearing inner ring superfine grinding device and method with outer diameter positioning function
CN104959482B (en) Rolling bending equipment and method for machining flange blank
CN202180135U (en) Railway-vehicle sliding-plug-door hinge edge-coiling molding die
CN109261816B (en) A kind of plastic joining method and device between metal pipe material and plate
CN105728507A (en) Hydraulic plate bending machine
CN112845783B (en) Spin forming method and spin forming device for W-shaped metal sealing ring
CN202037220U (en) Double flanging machine
CN104148535A (en) Multi-head wheel rim rolling forming machine
CN104858280B (en) Flange flanging machine
CN204094003U (en) Bull wheel rim rolling machine
CN209886451U (en) Sheet metal component location bending device
CN106181215A (en) A kind of exhaust manifold and flange welding fixing device
CN209190191U (en) A kind of improved press mounting of car wheel device
CN102198463A (en) Double flanging machine
CN207344429U (en) The clamp fixture clamped for machining long workpieces
CN201291278Y (en) Large flanged forming device
CN214639564U (en) Fan flanger
CN204711305U (en) One clamps pipe cutting machine fast
CN207127723U (en) Thin wall cylinder tube kind part endoporus mill fixture

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant