CN106001381B - A kind of manufacture craft of elbow expansion bolt - Google Patents
A kind of manufacture craft of elbow expansion bolt Download PDFInfo
- Publication number
- CN106001381B CN106001381B CN201610578186.8A CN201610578186A CN106001381B CN 106001381 B CN106001381 B CN 106001381B CN 201610578186 A CN201610578186 A CN 201610578186A CN 106001381 B CN106001381 B CN 106001381B
- Authority
- CN
- China
- Prior art keywords
- bolt
- flat
- punch die
- former
- punching
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/44—Making machine elements bolts, studs, or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J13/00—Details of machines for forging, pressing, or hammering
- B21J13/02—Dies or mountings therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/02—Die forging; Trimming by making use of special dies ; Punching during forging
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
- B21J5/08—Upsetting
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
The invention discloses a kind of manufacture craft of elbow expansion bolt, it is characterised in that：Including having the following steps, step one, the wire rod of required diameter is subjected to blank according to bolt length；Step 2, the forging and stamping of a punching and two punchings are completed with double header come the step in the middle of the good bolt of upsetting by the wire rod cut；Step 3, carries out three punching contractings with the flat mould that contracts flat by the wire rod of the good step of upsetting；Step 4, the flat good wire rod that will contract is with the punching of Clincher four for elbow, and the Clincher can prevent bolt from burr occur simultaneously.Process of the present invention rationally, processing highly effective and safe, product it is reliable and stable, the problem of generation and workpiece that effectively prevent bolt burr are swaged extraction.
Description
Technical field
The present invention relates to a kind of improvement of fastener manufacture craft invention, more particularly to a kind of making of elbow expansion bolt
The improvement invention of technique.
Background technology
In the prior art, the elbow of bolt with one end bent back is generally bended using inclined-plane, but when bolt head and inclined-plane shock, because
Impact is excessive and burr occurs in friction exertin conference.And in the flat process of the contracting for preparing bolt with one end bent back, often occur " lot "
Problem, refers to workpiece and is swaged and pull out, its reason be punch die contracting it is flat after frictional force, be far longer than friction of the former to bolt
Power, and solving lot sizing problem can use gauge or diameter of wire overstriking, while the scheme of former undergauge, although lot can be solved and asked
Topic, but gauge or diameter of wire overstriking, the manufacturing cost of bolt rise, and do not calculate very much economically.
The content of the invention
The technical problems to be solved by the invention are to overcome the deficiencies in the prior art there is provided a kind of process is simple efficiently, production
The manufacture craft of the safe and reliable elbow expansion bolt of product.
In order to solve the above-mentioned technical problem, the present invention adopts the following technical scheme that to realize：This kind of elbow expanding screw
The manufacture craft of bolt, it is characterised in that：It is step one, the wire rod of required diameter is long according to bolt including having the following steps
Degree carries out blank；Step 2, the forging and stamping of a punching and two punchings are completed with double header come in the middle of the good bolt of upsetting by the wire rod cut
Step；Step 3, carries out three punching contractings with the flat mould that contracts flat by the wire rod of the good step of upsetting；Step 4, the flat good wire rod that will contract is used
The punching of Clincher four can prevent bolt from burr occur simultaneously for elbow, the Clincher；Wherein, three punching contracting it is flat charged and attacked with four it is curved
The former of middle grip bolt is without changing, and energy double upsetting can directly bend after contracting is flat.
The Clincher includes the transmission device of circular arc slide unit and the slide unit movement of transmission circular arc, the circular arc slide unit
Circular arc be provided with circular arc sliding block, the circular arc sliding block is provided with hinge component, and is hinged with slide bar, the circular arc slide unit
Circular arc lower end be provided with support, support be provided with aperture, the slide bar other end is removably set in aperture, and support
On be arranged with spring.
The Clincher includes mold base and the transmission device being connected with mold base, and the mold base front end is provided with company
Connecting rod is hinged with bar axle, the pitman shaft, the connecting rod other end is provided with gap axle, and the gap matches with bolt head,
And gap axle is connected with gap axle back-moving spring, the gap axle back-moving spring other end is connected to mold base front lower portion, the mould
Has seat bottom provided with opening horizontal cavity facing forward, cavity is interior to be provided with pushing block, and the pushing block is connected with connecting rod return spring, described
The connecting rod return spring other end is connected to cavity back wall, and the pushing block front end is connected with the headtree on connecting rod, the mould
Has the positioning screw that seat upper front end is provided with limiting rod rotational angle.
The Clincher includes the formpiston for being bended to bolt and the former for fixing bolt, described the moon
The former that mould is provided with below bolt positioning hole, positioning hole is provided with swing rod axle, swing rod axle and is hinged with swing rod, and the swing rod is another
Single port bottom is set for inclined-plane, and the upper surface of swing rod and threaded bolt contacts is convex arc surface；Cavity is provided with the formpiston, it is empty
Accent is set towards former, and push rod is provided with cavity, and the push rod external port is set for inclined-plane, and is matched with the inclined-plane port of swing rod
Close, be additionally provided with the cavity on floating bracket, the push rod and be arranged with spring, spring one end connection cavity inner wall, spring is another
One end connects floating bracket.
The flat mould of contracting includes the former for carrying out the flat punch die of punch die contracting and bolt, and the former is provided with spiral shell
The pushing block provided with red needle and fixed red needle in punch die set, the punch die set is socketed with bolt positioning hole, the punch die, the red needle
Front end is placed in punch die jaws, and the jaws front end is provided with the flat step that contracts, the punch die set and is additionally provided with elastic device, the elasticity
Device one end connection punch die set inwall, other end connection pushing block.
The elastic device is three spring A being mutually socketed.
The beneficial effects of the invention are as follows the manufacture craft of the elbow expansion bolt after improvement, using the improved flat mould of contracting,
Three spring A being mutually socketed are set in by being covered in its punch die, helps mutually, be oriented to each other, increase red needle and push away bolt
Go out the thrust of punch die jaws, solve the problem of bolt is easily swaged extraction.By improved Clincher, can effectively it reduce
With the impact and frictional force of bolt head, to eliminate burr.And need not more in the former of three punchings and grip bolt needed for four punchings
Change, energy double upsetting can directly bend after contracting is flat, very convenient, remove the danger that clamp workpiece rotates from.
Brief description of the drawings
The embodiment to the present invention is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 rushes structural representation for the three of the present invention.
Fig. 2 is the structural representation before the embodiment of the present invention one is forged.
Fig. 3 is the structural representation after the embodiment of the present invention one is forged.
Fig. 4 is the structural representation before the embodiment of the present invention two is forged.
Fig. 5 is the structural representation after the embodiment of the present invention two is forged.
Fig. 6 is the structural representation before the embodiment of the present invention three is forged.
Fig. 7 is the structural representation after the embodiment of the present invention three is forged.
Embodiment
Accompanying drawing illustrates the structure of the present invention, further illustrates it about details in conjunction with accompanying drawing below.The elbow expands
The manufacture craft of bolt, including have the following steps, step one, the wire rod of required diameter is cut according to bolt length
Material；Step 2, is forged and pressed what the wire rod cut was rushed with the punching of double header completion one and two come the step in the middle of the good bolt of upsetting, its
Middle double header is prior art；Step 3, using specifically contracting, the flat punching contracting of mould progress three is flat, prevents background technology
The lot sizing problem of middle appearance；Step 4, the flat good wire rod that will contract is with the punching of Clincher four for elbow, the Clincher while energy
Prevent bolt from burr occur.Wherein, three punchings and the former of grip bolt needed for four punchings need not be changed, can double upsetting, contracting
Can directly it be bended after flat, it is very convenient, remove the danger that clamp workpiece rotates from.
Wherein, the flat mould that contracts includes to be set on the former 2 for carrying out the flat punch die 7 of punch die contracting and bolt, the former 2
Have and punch die set 1 is socketed with bolt positioning hole 6, the punch die 7, pushing away provided with red needle 3 and fixed red needle 3 in punch die set 1
Block 4, the front end correspondence jaws of punch die 7 of the red needle 3, jaws front end is flat for carrying out contracting to bolt provided with the flat step that contracts, i.e. platform
Jaws width at rank is less than bolt width；Elastic device 5, the one end of elastic device 5 connection are additionally provided with the punch die set 1
Punch die covers 1 inwall, other end connection pushing block 4；The elastic device 5 is three spring A being mutually socketed.During work, bolt is put
In in the positioning hole 6 of former 2, the bolt flat one end that needs to contract is placed towards the jaws direction of punch die 7, when punch die 7 is towards the direction of former 2
During impact, bolt contracts flat end into punch die jaws, and red needle is moved inward, and spring A shrinks, and the step at punch die opening contracts to bolt
Flat end progress contracting is flat, and after the completion of contracting is flat, spring A resets, and drive red needle 3, which reduces the staff bolt to hold, releases the jaws of punch die 7, wherein three
The spring A being mutually socketed, helps mutually, is oriented to each other, increase the thrust to red needle 3, solve bolt and be easily swaged extraction
The problem of.
Wherein, Clincher has following three kinds of embodiments：
Embodiment one, the Clincher include the transmission device of circular arc slide unit 8 and the movement of transmission circular arc slide unit 8,
The circular arc of the circular arc slide unit 8 is provided with circular arc sliding block 9, and the circular arc sliding block 9 is provided with hinge component 10, and is hinged with
Slide bar 11, the circular arc lower end of the circular arc slide unit 8 is provided with support 13, and support 13 is provided with aperture, and the slide bar 11 is another
End is removably set in aperture, and spring 12 is arranged with support 13.During work, bolt head and the mechanism of circular arc sliding block 9
Circular arc sliding block 9 offsets, and transmission device drives the mechanism of circular arc sliding block 9 to be moved towards bolt head so that bolt head is slided with circular arc
Guide rail of the block 9 along circular arc slide unit 8 is moved down, and then deformation is bent, while the other end of slide bar 11 is moved down in aperture, spring 12 is received
Contracting, after the completion of process of bending, sliding block 9 and slide bar 11 are resetted by spring 12.
Embodiment two, the Clincher include mold base 20 and the transmission device being connected with mold base 20, the mould
Tool seat 20 front end, which is provided with pitman shaft 17, the pitman shaft 17, is hinged with connecting rod 15, and the other end of connecting rod 15 is provided with gap axle
14, the gap matches with bolt head, and gap axle 14 is connected with gap axle back-moving spring 19, and gap axle back-moving spring 19 is another
One end is connected to the front lower portion of mold base 20, and the bottom of mold base 20 is provided with opening horizontal cavity facing forward, cavity and is provided with
Pushing block 21, the pushing block 21 is connected with connecting rod return spring 18, and the other end of connecting rod return spring 18 is connected to cavity back wall,
The front end of pushing block 21 is connected with the headtree 22 on connecting rod 15, and the upper front end of mold base 20 is provided with limiting rod 15
The positioning screw 16 of rotational angle.During work, it is bolted on former, bolt head is placed in the gap of gap axle 14, passes
Pushed away before dynamic device driven mold seat 20, connecting rod 15 is rotated clockwise, and gap axle 14 is rotated counterclockwise, and realization is beaten bolt head
Curved, after completing, connecting rod 15 is acted on by connecting rod return spring 18 with pushing block 21 to be resetted, and gap axle 14 is answered by gap axle
The position effect of spring 19 is resetted.Because bolt head is tightly to be attached in the right-angle surface of gap, therefore the process that bolt is bent
In without friction and relative displacement, burr will not produce, and stable working state is reliable.
Embodiment three, the Clincher include formpiston 27 for being bended to bolt and for fixing bolt
Former 25, the former 25 is provided with bolt positioning hole 30, and the former 25 of the lower section of positioning hole 30 is provided with swing rod axle 29, swing rod axle
Swing rod 28 is hinged with 29, the another port bottom of swing rod 28 is set for inclined-plane, and the upper surface of swing rod 28 and threaded bolt contacts
For convex arc surface；Cavity is provided with the formpiston 27, cavity mouthful is set towards former 25, and push rod 26, the push rod are provided with cavity
26 external ports are set for inclined-plane, and are engaged with the inclined-plane port of swing rod 28, and floating bracket 24 is additionally provided with the cavity, described
Spring 23, the one end of spring 23 connection cavity inner wall, the other end of spring 23 connection floating bracket 24 are arranged with push rod 26.Work
When, when floating bracket 24 is ejected by spring 23, swing rod 28 is lain on the inclined-plane of push rod 26, when mechanism is moved forward, branch of floating
Frame 24 bumps against the face of former 25 and then stopping first, and push rod 26 is continued to move along, and its inclined-plane forces swing rod 28 to rotate clockwise,
Bolt head is bent from side；The free-falling of swing rod 28 during return, is lied down on the inclined-plane in push rod 26 again, waits next spiral shell
Bolt.
In summary, presently preferred embodiments of the present invention is these are only, is not intended to limit the scope of the present invention.
Within the spirit and principles of the invention, any modification, equivalent substitution and improvements made etc., should be included in the present invention's
Within protection domain.
Claims (3)
1. a kind of manufacture craft of elbow expansion bolt, it is characterised in that：Including having the following steps, step one, by required diameter
The wire rod of size carries out blank according to bolt length；Step 2, a punching and two punchings are completed by the wire rod cut with double header
Forging and stamping come the good bolt of upsetting in the middle of step；Step 3, carries out three punching contractings with the flat mould that contracts flat by the wire rod of the good step of upsetting；Step
Four, the flat good wire rod that will contract is with the punching of Clincher four for elbow, and the Clincher can prevent bolt from burr occur simultaneously；Its
In, three, which rush flat and four formers for charging and attacking curved middle grip bolt that contract, to change, and energy double upsetting can directly be beaten after contracting is flat
It is curved；The Clincher includes on the formpiston for being bended to bolt and the former for fixing bolt, the former
Provided with bolt positioning hole, the former below positioning hole is provided with swing rod axle, swing rod axle and is hinged with swing rod, the swing rod other end
Mouth bottom is that inclined-plane is set, and the upper surface of swing rod and threaded bolt contacts is convex arc surface；Cavity, cavity mouthful are provided with the formpiston
Set towards former, push rod be provided with cavity, the push rod external port is set for inclined-plane, and is engaged with the inclined-plane port of swing rod,
It is additionally provided with the cavity on floating bracket, the push rod and is arranged with spring, spring one end connection cavity inner wall, the spring other end
Connect floating bracket.
2. the manufacture craft of elbow expansion bolt as claimed in claim 1, it is characterised in that：The flat mould of the contracting include into
Punch die and the former of bolt that row punch die contracts flat, the former are provided with bolt positioning hole, the punch die and are socketed with punching
Pushing block provided with red needle and fixed red needle in die sleeve, the punch die set, the front end of the red needle is placed in punch die jaws, before the jaws
End, which is provided with the flat step that contracts, the punch die set, is additionally provided with elastic device, and elastic device one end connection punch die set inwall is another
End connection pushing block.
3. the manufacture craft of elbow expansion bolt as claimed in claim 2, it is characterised in that：The elastic device is mutual set
The three spring A connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610578186.8A CN106001381B (en) | 2014-12-01 | 2014-12-01 | A kind of manufacture craft of elbow expansion bolt |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610578186.8A CN106001381B (en) | 2014-12-01 | 2014-12-01 | A kind of manufacture craft of elbow expansion bolt |
| CN201410708488.3A CN104525830B (en) | 2014-12-01 | 2014-12-01 | Elbow expansion bolt manufacturing process |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410708488.3A Division CN104525830B (en) | 2014-12-01 | 2014-12-01 | Elbow expansion bolt manufacturing process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106001381A CN106001381A (en) | 2016-10-12 |
| CN106001381B true CN106001381B (en) | 2017-07-28 |
Family
ID=52841561
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410708488.3A Active CN104525830B (en) | 2014-12-01 | 2014-12-01 | Elbow expansion bolt manufacturing process |
| CN201610578186.8A Active CN106001381B (en) | 2014-12-01 | 2014-12-01 | A kind of manufacture craft of elbow expansion bolt |
| CN201610578185.3A Active CN106180534B (en) | 2014-12-01 | 2014-12-01 | A kind of manufacture craft of elbow expansion bolt |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410708488.3A Active CN104525830B (en) | 2014-12-01 | 2014-12-01 | Elbow expansion bolt manufacturing process |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610578185.3A Active CN106180534B (en) | 2014-12-01 | 2014-12-01 | A kind of manufacture craft of elbow expansion bolt |
Country Status (1)
| Country | Link |
|---|---|
| CN (3) | CN104525830B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106607539A (en) * | 2015-10-27 | 2017-05-03 | 陕西宏远航空锻造有限责任公司 | Horizontal-forging forming method for martensitic stainless steel |
| CN106040939A (en) * | 2016-07-07 | 2016-10-26 | 浙江鼎盛汽车紧固件有限公司 | Screw rod positioning and buffering cold upsetting mold |
| CN106583618A (en) * | 2016-12-05 | 2017-04-26 | 中国航空工业标准件制造有限责任公司 | Continuous trimming combined die |
| CN108515137A (en) * | 2018-03-27 | 2018-09-11 | 宁波世裕五金电器有限公司 | A kind of manufacturing method of cold forging high-strength stainless steel setscrew |
| CN109909685B (en) * | 2019-01-24 | 2021-08-03 | 上海窗固紧固件制造有限公司 | Manufacturing method of elbow screw |
| CN114888224B (en) * | 2022-04-28 | 2022-12-23 | 泰州市华驰不锈钢制品有限公司 | Cold header for steel wire hoop machine-shaping |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60137537A (en) * | 1983-12-26 | 1985-07-22 | Aisin Seiki Co Ltd | Die for roll forging |
| GB8912482D0 (en) * | 1989-05-31 | 1989-07-19 | Unifix Ltd | Anchors |
| CN2260677Y (en) * | 1995-01-10 | 1997-08-27 | 陶友勤 | One-time forming mould for triming and reducing stem of screw bolt |
| KR100338020B1 (en) * | 1999-09-15 | 2002-05-24 | 정재순 | The elbow manufacture device by a virbrate pressure |
| CN2762908Y (en) * | 2004-07-28 | 2006-03-08 | 比亚迪股份有限公司 | Edge-reversing formation type pendulum mechanism |
| JP2006136915A (en) * | 2004-11-11 | 2006-06-01 | Toyota Motor Corp | Method for working bolt base-stock, bolt base-stock and die for working bolt base-stock |
| CN1686635A (en) * | 2005-04-28 | 2005-10-26 | 东莞洪梅全厚五金塑胶制品有限公司 | Processing method of hardware hexagonal screw |
| JP4673740B2 (en) * | 2005-12-26 | 2011-04-20 | 西尾精密株式会社 | Buffer structure of cold forging die |
| CN201064816Y (en) * | 2007-06-21 | 2008-05-28 | 上海上标汽车紧固件有限公司 | Special-purpose hinge pin bolt forming die |
| CN201760547U (en) * | 2010-05-26 | 2011-03-16 | 上海上标汽车紧固件有限公司 | Cold forging mould for suspension bolt of saloon car body |
| CN201855909U (en) * | 2010-06-25 | 2011-06-08 | 富奥汽车零部件股份有限公司 | Female die for molding head part of external plum blossom flange type bolt |
| CN201889381U (en) * | 2010-11-09 | 2011-07-06 | 键铭金属工业有限公司 | Linkage mechanism of nail head forming machine |
| CN102615156B (en) * | 2012-03-21 | 2014-01-15 | 梁首强 | Method for bending metal pipe as well as equipment for implementing method |
| CN202683688U (en) * | 2012-06-20 | 2013-01-23 | 亿和精密金属制品(深圳)有限公司 | Swing block type bending device |
| CN202701059U (en) * | 2012-07-12 | 2013-01-30 | 漳州永裕隆精密五金有限公司 | U-shaped oscillating bending die |
-
2014
- 2014-12-01 CN CN201410708488.3A patent/CN104525830B/en active Active
- 2014-12-01 CN CN201610578186.8A patent/CN106001381B/en active Active
- 2014-12-01 CN CN201610578185.3A patent/CN106180534B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN106180534A (en) | 2016-12-07 |
| CN104525830A (en) | 2015-04-22 |
| CN106001381A (en) | 2016-10-12 |
| CN106180534B (en) | 2018-01-02 |
| CN104525830B (en) | 2017-05-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106001381B (en) | A kind of manufacture craft of elbow expansion bolt | |
| CN204320976U (en) | The side blow mechanism of diel | |
| CN103801623B (en) | Bending stamping mould | |
| CN106238554B (en) | Support punching mechanism for smart mobile phone | |
| CN209452613U (en) | A kind of three-dimensional bending tube composite molding tooling | |
| CN204018627U (en) | The outer switching mechanism of cold headers clamp clamp piece | |
| CN203972731U (en) | Small-sized forging three-jaw stripper tungs | |
| CN105964840A (en) | Automatic hanger machining device | |
| CN212494682U (en) | Bending die and tapered wedge thereof | |
| CN102873237A (en) | T-shaped forge piece blank-manufacturing processing technology and device thereof | |
| CN210547727U (en) | Automatic forming equipment for stainless steel bending spring | |
| CN203900361U (en) | Bent pipe forging die | |
| CN207806393U (en) | A kind of punching press back-off flanging die | |
| CN206382397U (en) | A kind of turn-cutting die | |
| KR101732441B1 (en) | Oval hose clamp forming apparatus and forming method | |
| CN211191535U (en) | Bending device | |
| CN104190843A (en) | Outward turning mechanism for clamp pieces of cold header clamps | |
| CN211052283U (en) | Fastener twice bending one shot forming mould that punches a hole | |
| CN206046988U (en) | Wheel hub inner ring forges continuous mould | |
| CN109821981A (en) | Mold | |
| CN204247898U (en) | A kind of flat mould of contracting preparing bolt with one end bent back | |
| CN108856374B (en) | Full-automatic U-shaped part shaping machine | |
| CN205519442U (en) | Turbine blade is mould for forging die | |
| CN205110578U (en) | Pipe end throat mould | |
| CN108580597B (en) | U-shaped part shaping manipulator |
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 | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: Five Lin Industrial Zone Tangxia town Ruian city Wenzhou City, Zhejiang province 325200 field bridge Patentee after: Zhejiang Keteng Precision Machinery Co., Ltd Address before: Five Lin Cun Tangxia town Ruian city Wenzhou City, Zhejiang province 325200 field bridge Patentee before: WENZHOU KETENG FASTENER CO., LTD. |