CN110227729A - A kind of thin-wall high intensity precision aluminium alloy pipe drawing automatic clamping device - Google Patents

A kind of thin-wall high intensity precision aluminium alloy pipe drawing automatic clamping device Download PDF

Info

Publication number
CN110227729A
CN110227729A CN201910618906.2A CN201910618906A CN110227729A CN 110227729 A CN110227729 A CN 110227729A CN 201910618906 A CN201910618906 A CN 201910618906A CN 110227729 A CN110227729 A CN 110227729A
Authority
CN
China
Prior art keywords
thin
clamping device
wall high
aluminium alloy
alloy pipe
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.)
Granted
Application number
CN201910618906.2A
Other languages
Chinese (zh)
Other versions
CN110227729B (en
Inventor
刘志
王宪勇
魏晓磊
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.)
Harbin Dongan High Precision Tube Shaft Manufacturing Co.,Ltd.
Original Assignee
AECC Harbin Dongan Engine 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 AECC Harbin Dongan Engine Co Ltd filed Critical AECC Harbin Dongan Engine Co Ltd
Priority to CN201910618906.2A priority Critical patent/CN110227729B/en
Publication of CN110227729A publication Critical patent/CN110227729A/en
Application granted granted Critical
Publication of CN110227729B publication Critical patent/CN110227729B/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
    • B21CMANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C1/00Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
    • B21C1/16Metal 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
    • B21C1/22Metal 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
    • B21C1/24Metal 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21CMANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C1/00Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
    • B21C1/16Metal 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
    • B21C1/27Carriages; Drives
    • B21C1/28Carriages; Connections of grippers thereto; Grippers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21CMANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C1/00Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
    • B21C1/16Metal 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
    • B21C1/34Guiding or supporting the material or mandrels

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jigs For Machine Tools (AREA)
  • Clamps And Clips (AREA)

Abstract

The present invention relates to a kind of thin-wall high intensity precision aluminium alloy pipe drawing automatic clamping devices, belong to aluminium alloy pipe drawing technique field.Including interior support mechanism, outer clamping device, material removing mechanism, fixing seat (5);The present invention is supported by drawing process head inner hole of the interior support mechanism to thin-wall high-strength aluminium tube (1), outer clamping device limits the drawing process head outer diameter of thin-wall high-strength aluminium tube (1), interior support mechanism, outer clamping device, which works at the same time, fixes the drawing process head of thin-wall high-strength aluminium tube (1), pulling force is uniformly applied to tube-drawing technique head inner hole and outer circle simultaneously in drawing process, it prevents from pulling, material removing mechanism pushes interior support mechanism and thin-wall high-strength aluminium tube drawing head inner hole to disengage, material removing mechanism pushes outer clamping device and thin-wall high-strength aluminium tube drawing head outer circle to disengage, tube-drawing head is not disengaged by clamping action, in the case of the primary head processed of realization, complete automated exchanged cutter multi pass drawing technique.

Description

A kind of thin-wall high intensity precision aluminium alloy pipe drawing automatic clamping device
Technical field
The present invention relates to a kind of thin-wall high intensity precision aluminium alloy pipe drawing automatic clamping devices, belong to aluminium alloy pipe Drawing technique field.
Background technique
Thin-wall high intensity precision aluminium alloy pipe raw material use heavy wall duralumin or extra super duralumin alloy extrusion tube blank.Due to hard Aluminium or extra super duralumin alloy extrusion process are bad, cause its wall thickness larger, in high-precision aluminum alloy tube forming process drawing Deformation processing process is more, and the tubing of finished size could be obtained by needing to be repeated drawing.Realize drawing process, it need to be by pipe Drawing process head is first made in material, then to clamp drawing head by drawing clamping device and be drawn, make pipe by drawing mould Material realizes deformation processing by mold.Common tubing uses traditional head technique processed and drawing clamping device, general by taking the lead Machine technique drawing head is made rectangular or round, clamps tube-drawing technique head outer circle by drawing clamping device clamping opening, carries out Drawing operation.For thin-wall high intensity precision aluminium alloy pipe, since drawing number is more, commonly head method processed be can not achieve more Road drawing operates with primary drawing head obtained, needs to cut off drawing head, again head processed, in this way waste material, and needs Repeatedly to increase manufacturing cost by head processed;Relatively thin to finished product stage wall thickness, using outer circle clamping, then chucking power is insufficient, easily clamps It loosely disengages, and tubing is caused to scrap.
Summary of the invention
The present invention relates to a kind of thin-wall high intensity precision aluminium alloy pipe drawing automatic clamping devices, in primary head situation processed Under, automated exchanged cutter multi pass drawing technique may be implemented.
The specific technical solution of the present invention: a kind of thin-wall high intensity precision aluminium alloy pipe drawing automatic clamping device, It is characterized in that, including interior support mechanism, outer clamping device, material removing mechanism, fixing seat 5;Outer clamping device is mounted in fixing seat 5, Fixing seat 5 is connect with the drawing axis 9 in equipment, and interior support mechanism is in the sliding wild card tooth assembly 10 of outer clamping device, inner support Mechanism is supported to the drawing process head inner hole of thin-wall high-strength aluminium tube 1;Outer clamping device is to thin-wall high-strength aluminium tube 1 Drawing process head outer diameter limited;Interior support mechanism, outer clamping device work at the same time the drawer to thin-wall high-strength aluminium tube 1 Skill head is fixed;Material removing mechanism is mounted on the interior slide 17 of interior support mechanism.
The interior support mechanism further includes connection bolt 8, slides interior latch component 12.
Latch component 12 is splitted structure in the sliding, has in multiple slidings outer surface after latch combination form cylindrical surface And there is flute profile.
The outer clamping device further includes support gliding mass 4, push rod a7, push rod b (18), multiple fixing bolts 11, sliding Screw rod 19, big baffle 3.
Sliding wild card tooth assembly 10 is splitted structure, the barrel-like structure being made of latch outside multiple slidings, inner cylinder There is flute profile in face, is external for pyramidal surface.
The support gliding mass 4 is cylindrical rigid structure, and inner hole is pyramidal surface, and has oat tail groove structure along the conical surface.
Multiple push rod b18 are uniformly distributed along the circumference on the through-hole of fixing seat 5, are slidably matched, card in front end and sliding Tooth 12 contacts, and rear end is connect with the oil cylinder in equipment.
Multiple push rod a7 are uniformly distributed along the circumference on the through-hole of fixing seat 5, are slidably matched, front end and the outer latch of sliding 10 contacts, rear end is connect with the oil cylinder in equipment.
The material removing mechanism includes small front apron 2, sliding axle 13, spring b14, fixed swivel nut 15, fixture nut 16.
The sliding axle 13 equipped with spring b14 passes through fixed swivel nut 15 on the interior slide 17 of interior support mechanism.
The invention has the advantages that: the present invention by interior support mechanism to the drawing process head inner hole of thin-wall high-strength aluminium tube 1 into Row support, outer clamping device limit the drawing process head outer diameter of thin-wall high-strength aluminium tube 1, interior support mechanism, outer clamping machine Structure, which works at the same time, fixes the drawing process head of thin-wall high-strength aluminium tube 1, in drawing process simultaneously in tube-drawing technique head Hole and outer circle uniformly apply pulling force, prevent from pulling, and material removing mechanism pushes interior support mechanism and thin-wall high-strength aluminium tube drawing head inner hole It disengages, material removing mechanism pushes outer clamping device and thin-wall high-strength aluminium tube drawing head outer circle to disengage, and tube-drawing head is not clamped It acts on and disengages, in the case of realizing primary head processed, complete automated exchanged cutter multi pass drawing technique.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Wherein: 1- thin-wall high-strength aluminium tube, 2- small front apron, the big baffle of 3-, 4- support gliding mass, 5- fixing seat, 6- spring a, 7- push rod a, 8- connect bolt, 9- drawing axis, 10- sliding wild card tooth assembly, 11- fixing bolt, 12- slide in latch component, 13- sliding axle, the fixed swivel nut of 14- spring b, 15-, 16- fixture nut, slide, 18- push rod b, 19- sliding screw in 17-
Specific embodiment
The following further describes the present invention with reference to the drawings:
As shown in Figure 1, a kind of thin-wall high intensity precision aluminium alloy pipe drawing automatic clamping device.Including interior support mechanism, Outer clamping device, material removing mechanism, fixing seat 5;Interior support mechanism is propped up the drawing process head inner hole of thin-wall high-strength aluminium tube 1 Support, prevents the sliding wild card tooth assembly 10 of outer clamping device from causing to deform to technique head clamping process, and in drawing process work The deformation of skill head, chucking power become smaller and disengage;Outer clamping device is limited the drawing process head outer diameter of thin-wall high-strength aluminium tube 1 System prevents in the sliding of interior support mechanism latch component 12 to prop up process to technique head and causes to deform, and in drawing process technique Head deformation, chucking power become smaller and disengage;Interior support mechanism, outer clamping device work at the same time the drawer to thin-wall high-strength aluminium tube 1 Skill head is fixed, and prevents from deforming, and is uniformly applied pulling force to tube-drawing technique head inner hole and outer circle simultaneously in drawing process, is prevented It pulls, and keeps each angular uniform stressed deformation of tube-drawing process uniform;Material removing mechanism is the inner support machine under spring b14 effect The sliding axle 13 of structure drives the small front apron 2 of interior support mechanism, pushes the movement of latch component 12 and and thin-walled in the sliding of interior support mechanism High-strength aluminium tube drawing head inner hole disengages, and under the effect of spring a 6, the sliding screw 19 of outer clamping device drives outer material removing mechanism The big baffle 3 of clamping device, push the sliding wild card tooth assembly 10 of outer clamping device move and with thin-wall high-strength aluminium tube drawing Head outer circle disengages, and tube-drawing head is not disengaged by clamping action, realizes de- material effect.
Specific structure includes: that fixing seat 5 is fixed by the drawing axis 9 that screw rod 11 is connect with equipment.Interior support mechanism includes: to connect Bolt 8 slides interior latch component 12, interior slide 17, multiple push rod b18 composition, is connect by connection bolt 8 with drawing axis 9.Outside Clamping device includes: support gliding mass 4, push rod a7, multiple sliding wild card tooth assemblies 10, sliding screw 19, big baffle 3, Duo Gegu Determine the composition of bolt 11, support gliding mass 4 passes through the multiple fixing bolts 11 being circumferentially evenly distributed and is mounted in fixing seat 5.De- material Mechanism includes: small front apron 2, sliding axle 13, spring b14, fixed swivel nut 15, fixture nut 16, the sliding axle 13 equipped with spring b14 Through fixed swivel nut 15 on interior slide 17, and it can realize sliding, small front apron 2 is mounted in sliding axle 13 by fixture nut 16 On;Sliding screw 19 equipped with spring 6 connects big baffle 3 and is mounted in fixing seat 5 by swivel nut.
The course of work: as shown in Figure 1.The drawing process head of thin-wall high-strength aluminium tube 1 is in card in the sliding of interior support mechanism In the space that the sliding wild card tooth assembly 10 of tooth assembly 12 and outer clamping device is formed, latch component 12 in the sliding of interior support mechanism It drives push rod b18 to move along interior slide 17 in equipment oil cylinder and expands, prop up the drawing process head inner hole of tubing 1.Outer clamping machine The sliding wild card tooth assembly 10 of structure drives push rod a7 to shrink along support 4 inclined-plane lower slider of gliding mass in equipment oil cylinder, clamping tubing 1 Drawing process head outer circle.The tooth form of latch component 12 and sliding wild card tooth assembly 10 and tubing contact surface in sliding, by tubing card Tightly.Through fixing seat 5 and drawing axis 9 under the drive of equipment drawing oil cylinder, tube-drawing automatic clamping device traction tubing passes through Interior outer mold realizes drawing processing.After drawing, equipment oil cylinder drives push rod b18 to withdraw, and spring 14 drives 13 He of sliding axle Small front apron 2, which pushes, slides interior 12 movement of latch component, and outer circle is shunk, separated with tube-drawing technique head inner hole;Equipment oil cylinder band Dynamic push rod 7 is withdrawn, and spring 6 drives sliding screw 19 and big baffle 3 that the expansion of sliding wild card tooth assembly 10 is pushed to draw with pipe craft The separation of plug outer circle.In this way, realizing tubing de- material, drawing operating process is completed.

Claims (10)

1. a kind of thin-wall high intensity precision aluminium alloy pipe drawing automatic clamping device, which is characterized in that including interior support mechanism, outside Clamping device, material removing mechanism, fixing seat (5);Outer clamping device is mounted on fixing seat (5), the drawing in fixing seat (5) and equipment Axis (9) connection is pulled out, for interior support mechanism in the sliding wild card tooth assembly (10) of outer clamping device, interior support mechanism is to thin-wall high-strength The drawing process head inner hole of aluminium tube (1) is supported;Outer clamping device is the drawing process head to thin-wall high-strength aluminium tube (1) Outer diameter is limited;Interior support mechanism, outer clamping device, which work at the same time, fixes the drawing process head of thin-wall high-strength aluminium tube (1); Material removing mechanism is mounted on the interior slide (17) of interior support mechanism.
2. thin-wall high intensity precision aluminium alloy pipe drawing automatic clamping device as described in claim 1, which is characterized in that institute The interior support mechanism stated further includes connection bolt (8), slides interior latch component (12), multiple push rod b (18).
3. thin-wall high intensity precision aluminium alloy pipe drawing automatic clamping device as claimed in claim 2, which is characterized in that institute Stating latch component (12) in sliding is splitted structure, has in multiple slidings after latch combination outer surface form cylindrical surface and with teeth Type.
4. thin-wall high intensity precision aluminium alloy pipe drawing automatic clamping device as described in claim 1, which is characterized in that institute The outer clamping device stated further includes support gliding mass (4), push rod a (7), push rod b (18), multiple fixing bolts (11), sliding screw (19), big baffle (3).
5. thin-wall high intensity precision aluminium alloy pipe drawing automatic clamping device as described in claim 1, which is characterized in that sliding Dynamic wild card tooth assembly (10) are splitted structures, the barrel-like structure being made of latch outside multiple slidings, inner circular cylinder type with teeth, Outside is pyramidal surface.
6. thin-wall high intensity precision aluminium alloy pipe drawing automatic clamping device as claimed in claim 4, which is characterized in that institute The support gliding mass (4) stated is cylindrical rigid structure, and inner hole is pyramidal surface, and has oat tail groove structure along the conical surface.
7. thin-wall high intensity precision aluminium alloy pipe drawing automatic clamping device as claimed in claim 4, which is characterized in that institute The multiple push rod b (18) stated are uniformly distributed along the circumference on the through-hole of fixing seat (5), are slidably matched, latch (12) in front end and sliding Contact, rear end is connect with the oil cylinder in equipment.
8. thin-wall high intensity precision aluminium alloy pipe drawing automatic clamping device as claimed in claim 4, which is characterized in that institute The multiple push rod a (7) stated are uniformly distributed along the circumference on the through-hole of fixing seat (5), are slidably matched, and front end connects with outer latch (10) is slided Touching, rear end is connect with the oil cylinder in equipment.
9. thin-wall high intensity precision aluminium alloy pipe drawing automatic clamping device as described in claim 1, which is characterized in that institute Stating material removing mechanism includes small front apron (2), sliding axle (13), spring b (14), fixed swivel nut (15), fixture nut (16).
10. thin-wall high intensity precision aluminium alloy pipe drawing automatic clamping device as claimed in claim 4, which is characterized in that Sliding axle (13) equipped with (14) spring b passes through fixed swivel nut (15) on the interior slide (17) of interior support mechanism.
CN201910618906.2A 2019-07-09 2019-07-09 Automatic clamping device for drawing thin-wall high-strength precise aluminum alloy pipe Active CN110227729B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910618906.2A CN110227729B (en) 2019-07-09 2019-07-09 Automatic clamping device for drawing thin-wall high-strength precise aluminum alloy pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910618906.2A CN110227729B (en) 2019-07-09 2019-07-09 Automatic clamping device for drawing thin-wall high-strength precise aluminum alloy pipe

Publications (2)

Publication Number Publication Date
CN110227729A true CN110227729A (en) 2019-09-13
CN110227729B CN110227729B (en) 2021-07-20

Family

ID=67854942

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910618906.2A Active CN110227729B (en) 2019-07-09 2019-07-09 Automatic clamping device for drawing thin-wall high-strength precise aluminum alloy pipe

Country Status (1)

Country Link
CN (1) CN110227729B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112620369A (en) * 2020-12-01 2021-04-09 上海浦营金属科技有限公司 Processing device for high-performance stainless steel seamless steel pipe
CN112974555A (en) * 2021-01-26 2021-06-18 北京航空航天大学江西研究院 Clamping structure for drawing high-temperature alloy thin-wall capillary tube
CN114055207A (en) * 2021-11-23 2022-02-18 内蒙古工业大学 Tubulose aluminum alloy processing shape fixed equipment of preapring for an unfavorable turn of events
CN114682641A (en) * 2022-05-17 2022-07-01 安徽金铂新材料科技有限公司 Quick forming die is used in processing of dysmorphism thin wall aluminum alloy

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN200970610Y (en) * 2006-10-25 2007-11-07 中国航空工业第一集团公司北京航空制造工程研究所 Clamp for preventing cross rib from cracking during forming of ribbed integral wall plate
CN201399513Y (en) * 2009-04-28 2010-02-10 中国重型机械研究院有限公司 Inner supporting type extension rod mechanism for pipe bending equipment
CN105665458A (en) * 2015-12-18 2016-06-15 浙江恩华新材料科技有限公司 Pipe clamp
WO2018092966A1 (en) * 2016-11-18 2018-05-24 동연스틸주식회사 Apparatus and method for manufacturing pipe having variable cross-section

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN200970610Y (en) * 2006-10-25 2007-11-07 中国航空工业第一集团公司北京航空制造工程研究所 Clamp for preventing cross rib from cracking during forming of ribbed integral wall plate
CN201399513Y (en) * 2009-04-28 2010-02-10 中国重型机械研究院有限公司 Inner supporting type extension rod mechanism for pipe bending equipment
CN105665458A (en) * 2015-12-18 2016-06-15 浙江恩华新材料科技有限公司 Pipe clamp
WO2018092966A1 (en) * 2016-11-18 2018-05-24 동연스틸주식회사 Apparatus and method for manufacturing pipe having variable cross-section

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112620369A (en) * 2020-12-01 2021-04-09 上海浦营金属科技有限公司 Processing device for high-performance stainless steel seamless steel pipe
CN112974555A (en) * 2021-01-26 2021-06-18 北京航空航天大学江西研究院 Clamping structure for drawing high-temperature alloy thin-wall capillary tube
CN114055207A (en) * 2021-11-23 2022-02-18 内蒙古工业大学 Tubulose aluminum alloy processing shape fixed equipment of preapring for an unfavorable turn of events
CN114682641A (en) * 2022-05-17 2022-07-01 安徽金铂新材料科技有限公司 Quick forming die is used in processing of dysmorphism thin wall aluminum alloy

Also Published As

Publication number Publication date
CN110227729B (en) 2021-07-20

Similar Documents

Publication Publication Date Title
CN110227729A (en) A kind of thin-wall high intensity precision aluminium alloy pipe drawing automatic clamping device
CN108057996B (en) Thin-wall cone workpiece machining process and clamp device thereof
CN104858463A (en) Manual self-centering clamp for thin-walled part
CN103639751A (en) Fixture with built-in compaction linkage mechanism
JP2010046715A5 (en)
CN110640521B (en) Automatic clamp for external holding positioning of thin-wall sleeve and end face compression
CN114798938A (en) Straight pipe section internal-supporting external-clamping type clamping boosting device for bending and forming thin-wall pipe
CN107695636B (en) Flywheel gear ring machining method and gear ring turning end face clamp thereof
CN110871406A (en) Steel pipe clamping device suitable for different specifications
CN208276186U (en) A kind of slender rod type part fixture for processing
CN101298088A (en) Pipe-reduction mold
CN104353909A (en) Expansion core clamp for synchronizer gear sleeve
CN102151712A (en) Short screw connected expansion ring type fixed dummy block
CN109834646B (en) Rotary unloading drawing device
DE3216287C2 (en) Pipe end upsetting press
CN207372040U (en) The online cold-drawn system of internal high pressure forming pipe fitting
KR102487205B1 (en) Battery terminal processing mold for electric vehicle and processing method using the same
CN105537637A (en) Rapid spring fixture mandrel
CN204843934U (en) A interior double -layered device for pipe fitting
CN104723150A (en) Turning clamping device with two-way inner support
CN108687484B (en) Spring pin flange welding positioning fixture
CN206277186U (en) A kind of motor housing positioning fixture based on hydraulic lathe
CN202155643U (en) Multipurpose pipe extruding machine
CN110080598B (en) Y-shaped wire rod automatic clamp
CN213225234U (en) Synchronizer gear sleeve pressing limiting groove clamp and machining device

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant
TR01 Transfer of patent right

Effective date of registration: 20240716

Address after: No.66, Songhua Road, core area of Hanan industrial new town, Harbin City, Heilongjiang Province

Patentee after: Harbin Dongan High Precision Tube Shaft Manufacturing Co.,Ltd.

Country or region after: China

Address before: Heilongjiang province Harbin city 150066 Cottage Area Baoguo Street No. 51

Patentee before: AECC Harbin Dongan ENGINE Co.,Ltd.

Country or region before: China