CN106670594B - One kind carrying out elongated thread axis truning fixture for lathe - Google Patents
One kind carrying out elongated thread axis truning fixture for lathe Download PDFInfo
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- CN106670594B CN106670594B CN201610861172.7A CN201610861172A CN106670594B CN 106670594 B CN106670594 B CN 106670594B CN 201610861172 A CN201610861172 A CN 201610861172A CN 106670594 B CN106670594 B CN 106670594B
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- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000005520 cutting process Methods 0.000 claims description 17
- 238000009434 installation Methods 0.000 claims description 16
- 238000007373 indentation Methods 0.000 claims 3
- 238000002789 length control Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 6
- 239000004257 Anoxomer Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 210000003746 feather Anatomy 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
- B23G1/00—Thread cutting; Automatic machines specially designed therefor
- B23G1/44—Equipment or accessories specially designed for machines or devices for thread cutting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
- B23G3/00—Arrangements or accessories for enabling machine tools not specially designed only for thread cutting to be used for this purpose, e.g. arrangements for reversing the working spindle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/25—Movable or adjustable work or tool supports
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Turning (AREA)
Abstract
The invention discloses a kind of devices carrying out elongated thread axis turning for lathe, the device that elongated thread axis turning is carried out for lathe is mounted on the saddle of the lathe comprising pedestal, guide sleeve, telescopic, cutter reset ring, reach control assembly and toolbox.Present apparatus advantage is, due to provided with three circumferentially uniformly distributed external threading knives, reducing deformation of the thread spindle in turning process, to ensure processing quality；Due to being provided with adjustment swivel nut, the reach on the elongated shaft for waiting for turning can be relatively accurately controlled；Due to provided with the first inclined-plane that can be contacted with each other or detach and third inclined-plane, can accurately realize the occurrence of ending of screw thread processes, is effectively prevented crushing knife；Ring is answered due to being provided with cutter, enables three external threading knives simultaneously to central reduction, operation is quick and convenient.
Description
Technical field
The present invention relates to technical fields of mechanical processing, relate in particular to a kind of for lathe progress elongated thread axis turning
Device.
Background technology
Clamping workpiece is difficult in process for the screw thread small for nominal diameter, processing length is long and workpiece stiffness is poor, spiral shell
Line cutting is unstable, workpiece is difficult to keep stable state etc., and the flexural deformation of elongate rod axis of external thread, form of thread is caused not to be advised
The problems such as model, random tooth, elongate rod threaded male component material plasticity, toughness are preferable, and hardness is poor.In addition, if threaded portion is located at
Elongated shaft medium position will will produce very large deformation in cutting process and cause processing can not since diameter of work is small, poor rigidity
Continue.
Invention content
The present invention is mainly the technical problem solved present in the prior art, can be subtracted used in lathe progress to provide one kind
Few machining deformation and the device that thread turning can be carried out to elongated shaft middle part.
The technical scheme is that：A kind of device carrying out elongated thread axis turning for lathe, it is described to be used for lathe
The device for carrying out elongated thread axis turning is mounted on the saddle of the lathe comprising pedestal, guide sleeve, telescopic, knife
Tool resets ring, reach control assembly and toolbox.
The pedestal is fixed on the saddle upper surface of the lathe, and a boss, position are provided on the right side of the pedestal
In boss periphery setting there are three the uniformly distributed first step hole being made of unthreaded hole and threaded hole, the middle of the base is provided with one
By the hole A being relatively large in diameter and the smaller hole B of diameter is formed on the boss second step hole, it is provided in the hole A
The guide groove of one left and right directions.
The guide sleeve is cylinder, and endoporus is used for across the elongated thread axis for waiting for turning, outer round surface with it is described
Hole B is interference fitted.
The telescopic includes guide part and fixed part, and middle part is provided with one by across the elongated spiral shell for waiting for turning
The third stepped hole that the hole C of line axis and one is formed with the guide sleeve Outer cylindrical at the hole D of clearance fit, the guide part peace
In the hole A and clearance fit is formed, and one is further fixed on the guide part can with the guide groove formation in the hole A
The feather key of mobile cooperation, can make the relatively described pedestal of the telescopic stretch out or retract to the right to the left, the fixed part
A baffle ring is provided on external cylindrical surface at right side, there are three the T-types for installing the toolbox for left side setting
Slot, the fixed part also set up there are three left and right directions and circumferentially uniformly distributed be made of hole E and hole F and first step hole
The 4th opposite stepped hole；
The cutter resets ring set and is mounted on the fixed part external cylindrical surface being located on the left of the baffle ring, and the cutter is multiple
Three uniformly distributed open slots being made of flat bottoms and wedged bottom portion are set on the inside of the ring of position.
The toolbox shares three groups, is mounted in the T-slot on the fixed part left side, including screw thread
Knife, Cutting tool installation manner block, the first spring and block, the block are fixedly mounted on the T-slot on the left of the fixed part of the telescopic
Bottom, is provided with the holding tank for installing the screwer on the left of the Cutting tool installation manner block, right side be provided with upper and lower directions and with
The T-slot forms the T-block being slidably matched, and a radial slot is arranged at the middle part of the T-block, the slot bottom of the radial slot is set
It is equipped with the step on first inclined-plane of band, the T-block bottom also sets up a blind hole, and first spring is mounted in the blind hole,
Wherein one end resists the bottom of the blind hole, and the other end resists the block, and the T-block upper end is additionally provided with one and carries a plane
With the convex block on one second inclined-plane, when work, first spring can make the Cutting tool installation manner block be displaced outwardly and make the spiral shell
Line knife leaves the surface of the elongated thread axis, is moved to the left the cutter and resets ring, the cutter is made to reset the flat bottoms of ring
When with the plane contact of the boss of the T-block upper end, the screwer moves inward and realizes the screwer and reset.
The reach control assembly shares three groups, including pull rod, second spring and adjustment swivel nut, the adjustment swivel nut
Outer cylinder surface be provided with the external screw thread screwed with the threaded hole in first step hole, adjust the adjustment swivel nut stretching bottom
The length of seat right side can be arranged the length of the screw thread for waiting for turning, the pull rod include sequentially pass through from left to right the hole F,
The sliding part except the right side for adjusting swivel nut is stretched out after the endoporus of unthreaded hole and the adjustment swivel nut and is slidably mounted
In the hole E and the screens portion that extend out to the left in the radial slot of the T-block, the right end of the sliding part are fixed with a gear
Circle, the second spring are sleeved on the sliding part between the bottoms the hole E and screens portion, are also set up on the inside of the screens portion
There are a notch for carrying third inclined-plane, the first inclined-plane of the gradient on the third inclined-plane and the slot bottom of the radial slot of the T-block
Unanimously, the contact length on the first inclined-plane and third inclined-plane is 2 ~ 3mm, when cutted thread, while the telescopic stretches out to the left,
The pull rod is driven also to slide to the left, when the baffle ring of the right end of the pull rod is contacted with the right side for adjusting swivel nut, institute
Stating then makes first inclined-plane gradually be disengaged with third inclined-plane when telescopic continues to move to contacts and realizes and add to the ending of screw thread
Work, when first inclined-plane and third inclined-plane are completely disengaged, the Cutting tool installation manner block is fast under the action of first spring
Speed is displaced outwardly and the point of a knife of the screwer is made quickly to be moved away from workpiece surface.
Therefore the advantageous effect of the present apparatus is：Due to provided with three circumferentially uniformly distributed external threading knives, reducing thread spindle and existing
Deformation in turning process ensures processing quality；Due to being provided with adjustment swivel nut, it can relatively accurately control and wait for the elongated of turning
Reach on axis；It, can be accurately real due to provided with the first inclined-plane that can contact with each other or detach and third inclined-plane
The occurrence of ending of existing screw thread processes, is effectively prevented crushing knife；Ring is answered due to being provided with cutter, keeps three external threading knives same
When to central reduction, operation is quick and convenient.
Description of the drawings
Fig. 1 is the front view of the device that elongated thread axis turning is carried out for lathe of the present invention；
Fig. 2 is the vertical view of the device that elongated thread axis turning is carried out for lathe of the present invention；
Fig. 3 is the left view of the device that elongated thread axis turning is carried out for lathe of the present invention；
Fig. 4 is the close-up schematic view at the I in Fig. 1；
Fig. 5 is that the cutter of the device for carrying out elongated thread axis turning for lathe of the present invention resets the structural representation of ring
Figure；
Fig. 6 is the structural schematic diagram of the pull rod of the device that elongated thread axis turning is carried out for lathe of the present invention；
Fig. 7 is the implementation exemplary plot of the device that elongated thread axis turning is carried out for lathe of the present invention.
Specific implementation mode
A kind of device carrying out elongated thread axis turning for lathe, it is described to carry out elongated thread axis turning for lathe
Device is mounted on the saddle of the lathe comprising pedestal 1, guide sleeve 2, telescopic 3, cutter reset ring 4, reach
Control assembly and toolbox.
The pedestal 1 is fixed on the saddle upper surface of the lathe, and the right side of the pedestal 1 is provided with a boss,
Positioned at boss periphery setting, there are three the uniformly distributed first step hole 13 being made of unthreaded hole 131 and threaded hole 132, pedestals 1
Middle part is provided with one by the hole A111 that is relatively large in diameter and the smaller hole B112 of diameter is formed on the boss second step
Hole is provided with the guide groove 12 of a left and right directions in the hole A111.
The guide sleeve 2 is cylinder, and endoporus is used for across the elongated thread axis for waiting for turning, outer round surface with it is described
Hole B112 is interference fitted.
The telescopic 3 includes guide part 31 and fixed part 32, and middle part is provided with one by across waiting for described in turning
The third step that the hole C331 of elongated thread axis and one is formed with 2 Outer cylindrical of the guide sleeve at the hole D332 of clearance fit
Hole, the guide part 31 be mounted on the hole A111 in and form clearance fit, and be further fixed on the guide part 31 one with
Guide groove 12 in the hole A111 forms the feather key of removable cooperation, can make the pedestal 1 relatively of the telescopic 3 to
Left stretching is retracted to the right, is provided with a baffle ring 321 at right side on the external cylindrical surface of the fixed part 32, left side is set
Set there are three for installing the T-slot 322 of the toolbox, the fixed part 32 also set up it is there are three left and right directions and
Circumferentially uniformly distributed 4th stepped hole being made of hole E323 and hole F324, opposite with first step hole 13.
The cutter resets ring 4 and is sleeved on 32 external cylindrical surface of the fixed part in 321 left side of the baffle ring, described
Cutter resets 4 inside of ring and three uniformly distributed open slots 41 being made of flat bottoms 411 and wedged bottom portion 412 is arranged.
The toolbox shares three groups, is mounted in the T-slot 322 on 32 left side of the fixed part, including
Screwer 51, Cutting tool installation manner block 52, the first spring 53 and block 54, the block 54 are fixedly mounted on consolidating for the telescopic 3
Determine 322 bottom of T-slot in 32 left side of portion, 52 left side of the Cutting tool installation manner block is provided with the holding tank for installing the screwer 51
521, T-block 522 that is that right side is provided with upper and lower directions and being slidably matched with the formation of the T-slot 322, in the T-block
A radial slot 523 is arranged in 522 middle part, and the slot bottom of the radial slot 523 is provided with the step 524 on first inclined-plane of band 525, institute
It states 522 bottom of T-block and also sets up a blind hole, first spring 53 is mounted in the blind hole, and wherein one end resists the blind hole
Bottom, the other end resist the block 54, and it is oblique with a plane 5261 and one second that 522 upper end of the T-block is additionally provided with one
The convex block 526 in face 5262, when work, first spring 53 can make the Cutting tool installation manner block 52 be displaced outwardly and make the spiral shell
Line knife 51 leaves the surface of the elongated thread axis, is moved to the left the cutter and resets ring 4, and the cutter is made to reset the flat of ring 4
When bottom 411 and the plane 5261 of the boss 526 of 522 upper end of the T-block contact, the screwer 51 is moved inward and is realized
The screwer 51 resets.
The reach control assembly shares three groups, including pull rod 61, second spring 62 and adjustment swivel nut, the adjustment
The outer cylinder surface of swivel nut is provided with the external screw thread screwed with the threaded hole in first step hole 13 132, adjusts the adjustment swivel nut
The length for the screw thread for waiting for turning can be arranged by stretching out the length of 1 right side of the pedestal, the pull rod 61 include from left to right according to
It is secondary to be stretched out after the endoporus of the hole F324, unthreaded hole 131 and the adjustment swivel nut except the right side of the adjustment swivel nut
It sliding part 611 and is slidably mounted in the hole E323 and extend out to the left in the radial slot 523 of the T-block 522
The right end in screens portion 612, the sliding part 611 is fixed with a baffle ring 64, and the second spring 62 is sleeved on the bottoms the hole E323
On sliding part 611 between portion and screens portion 612, the inside in the screens portion 612 is additionally provided with one and carries third inclined-plane 614
Notch 613, the first inclined-plane 525 1 of the gradient on the third inclined-plane 614 and the slot bottom of the radial slot 523 of the T-block 522
It causing, the contact length on the first inclined-plane 525 and third inclined-plane 614 is 2 ~ 3mm, when cutted thread, what the telescopic 3 stretched out to the left
Meanwhile the pull rod 61 being driven also to slide to the left, when the right end of the baffle ring 64 and the adjustment swivel nut of the right end of the pull rod 61
Face contact when, then make when the telescopic 3 continues to move to first inclined-plane 525 gradually disengaged with third inclined-plane 614 contact and
It realizes and the ending of screw thread is processed, when first inclined-plane 525 and third inclined-plane 614 are completely disengaged, the Cutting tool installation manner block
52 are quickly displaced outwardly under the action of the first spring 53 and the point of a knife of the screwer 51 are made quickly to be moved away from workpiece surface.
Due to provided with three circumferentially uniformly distributed external threading knives, reducing deformation of the thread spindle in turning process, ensure to add
Working medium amount；Due to being provided with adjustment swivel nut, the reach on the elongated shaft for waiting for turning can be relatively accurately controlled；Due to setting
The first inclined-plane that can be contacted with each other or detach and third inclined-plane can accurately realize the ending processing of screw thread, effectively
The occurrence of preventing crushing knife；Ring is answered due to being provided with cutter, enables three external threading knives simultaneously to central reduction, operates quickly side
Just.
Claims (2)
1. a kind of device carrying out elongated thread axis turning for lathe, the dress that elongated thread axis turning is carried out for lathe
It sets on the saddle of the lathe comprising pedestal（1）, guide sleeve（2）, telescopic（3）, cutter reset ring（4）, spiral shell
Line length control mechanism and toolbox；
The pedestal（1）On the saddle of the lathe, the pedestal（1）Right side be provided with a cylinder, be located at institute
Stating cylinder periphery setting, there are three uniformly distributed by unthreaded hole（131）Become larger suddenly with diameter and female deep hole is set（132）
The first step hole of composition（13）, pedestal（1）Middle part is provided with a hole A by being relatively large in diameter（111）With on the cylinder
The smaller hole B of diameter（112）The second step hole of composition, the hole A（111）Inside it is provided with the rectangular cross-section of a left and right directions
Elongated slot（12）；
The guide sleeve（2）For cylinder, it is mounted on the hole B（112）Interior and form interference fit, endoporus is used for across waiting for vehicle
The elongated thread axis cut；
The telescopic（3）Including the smaller support shaft of diameter（31）With the disk being relatively large in diameter（32）, middle part be provided with one by
To across the hole C for the elongated thread axis for waiting for turning（331）It is sleeved on the guide sleeve with one（2）It goes up and forms gap and match
The hole D of conjunction（332）The third stepped hole of composition, the support shaft（31）Mounted on the hole A（111）It is interior and form gap and match
It closes, and the support shaft（31）On be further fixed on one and the hole A（111）Interior elongated slot（12）Form the guiding of removable cooperation
Key can make the telescopic（3）The relatively described pedestal（1）It stretches out or retracts to the right to the left, the disk（32）Outside cylinder
On face a flange is provided at right side（321）, there are three the cutters for installing the toolbox for left side setting
Mounting groove（322）, the disk（32）It also sets up there are three left and right directions and circumferentially uniformly distributed by hole E（323）With hole F
（324）Form and first step hole（13）The 4th opposite stepped hole；
The cutter resets ring（4）It is sleeved on and is located at the flange（321）The disk in left side（32）It is described on external cylindrical surface
Cutter resets ring（4）Inside be arranged three it is uniformly distributed by flat bottoms（411）With wedged bottom portion（412）The open slot of composition（41）；
The toolbox shares three groups, is mounted on the disk（32）Cutting tool installation manner groove on left side（322）It is interior, packet
Include lathe tool（51）, Cutting tool installation manner block（52）, the first spring（53）And block（54）, the block（54）It is fixedly mounted on described stretch
Contracting set（3）Disk（32）The Cutting tool installation manner groove in left side（322）Bottom, the Cutting tool installation manner block（52）Left side is provided with installation institute
State lathe tool（51）Square hole（521）, right side be provided with upper and lower directions and with the Cutting tool installation manner groove（322）It is equal sized and
With the Cutting tool installation manner groove（322）Form the sliding block being slidably matched（522）, in the sliding block（522）Middle part setting one it is radial
Notch（523）, the radial indentation（523）Bottom be provided with one band inclined-plane A（525）Right low left high Z-type step
（524）, the sliding block（522）Bottom also sets up a blind hole, first spring（53）In the blind hole, wherein one
End resists the bottom of the blind hole, and the other end resists the block（54）, the sliding block（522）Upper end is additionally provided with one and carries one
Plane（5261）With an inclined-plane B（5262）Convex block（526）, when work, first spring（53）The cutter can be made to pacify
Fill block（52）It is displaced outwardly and makes the lathe tool（51）The surface for leaving the elongated thread axis is moved to the left the cutter and resets
Ring（4）, the cutter is made to reset ring（4）Flat bottoms（411）With the sliding block（522）The convex block of upper end（526）Plane
（5261）When contact, the lathe tool（51）It moves inward and realizes the lathe tool（51）It resets；
The reach control mechanism shares three groups, including telescopic rod（61）, second spring（62）With adjustment swivel nut, the tune
The outer cylinder surface of whole swivel nut is provided with and first step hole（13）Deep hole（132）The external screw thread that screws of internal thread, adjustment
The adjustment swivel nut stretches out the pedestal（1）The length for the screw thread for waiting for turning, the telescopic rod can be arranged in the length of right side
（61）Including sequentially passing through the hole F from left to right（324）, unthreaded hole（131）And described in being stretched out after the endoporus of the adjustment swivel nut
Adjust the elongated shaft except the right side of swivel nut（611）Be slidably mounted in the hole E（323）It is interior and extend out to institute to the left
State sliding block（522）Radial indentation（523）Interior top pressure axis（612）, the elongated shaft（611）Right end be additionally provided with a collar
（64）, the second spring（62）It is sleeved on the hole E（323）Bottom and top pressure axis（612）Between elongated shaft（611）On,
The top pressure axis（612）Inside be additionally provided with one carry inclined-plane C（614）Bayonet（613）, the inclined-plane C（614）Gradient
With the sliding block（522）Radial indentation（523）Z-type step inclined-plane A（525）Unanimously, inclined-plane A（525）With inclined-plane C
（614）Contact length be 2-3mm, when cutted thread, the telescopic（3）While stretching to the left, the telescopic rod is driven
（61）Also it slides to the left, when the telescopic rod（61）Right end collar（64）When being contacted with the right side of the adjustment swivel nut,
The telescopic（3）Then make the inclined-plane A when continuing to move to（525）With inclined-plane C（614）It gradually disengages contact and realizes to screw thread
Ending processing, as the inclined-plane A（525）With inclined-plane C（614）When completely disengaged, the Cutting tool installation manner block（52）Described
One spring（53）Under the action of be quickly displaced outwardly and make the lathe tool（51）Point of a knife be quickly moved away from workpiece surface.
2. the device according to claim 1 for carrying out elongated thread axis turning for lathe, it is characterised in that：The cutter
Mounting groove（322）It can be T-slot, can also be dovetail groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610861172.7A CN106670594B (en) | 2016-09-29 | 2016-09-29 | One kind carrying out elongated thread axis truning fixture for lathe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610861172.7A CN106670594B (en) | 2016-09-29 | 2016-09-29 | One kind carrying out elongated thread axis truning fixture for lathe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106670594A CN106670594A (en) | 2017-05-17 |
| CN106670594B true CN106670594B (en) | 2018-08-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610861172.7A Active CN106670594B (en) | 2016-09-29 | 2016-09-29 | One kind carrying out elongated thread axis truning fixture for lathe |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107470652B (en) * | 2017-08-26 | 2018-07-06 | 广州市新帅机械制造有限公司 | A kind of septal fossula grooving apparatus for lathe |
| CN112548152A (en) * | 2020-12-08 | 2021-03-26 | 齐齐哈尔二机床(集团)有限责任公司 | Tool retracting device for finish machining of cyclone lathe |
| CN112548125A (en) * | 2020-12-08 | 2021-03-26 | 齐齐哈尔二机床(集团)有限责任公司 | Heavy double-spindle integral ball valve cyclone lathe |
| CN114505547B (en) * | 2022-03-09 | 2024-02-06 | 陕西中恒伟创金属材料有限公司 | Turning device for turning long and thin threaded shaft of lathe |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62150023U (en) * | 1986-03-14 | 1987-09-22 | ||
| CN201009019Y (en) * | 2007-03-12 | 2008-01-23 | 刘玉成 | Waveshape threading lathe |
| CN204171486U (en) * | 2014-10-11 | 2015-02-25 | 四川凯泓水利机械制造有限公司 | Overlength screw rod processing milling machine |
| CN204747515U (en) * | 2015-04-30 | 2015-11-11 | 绵阳市永庆机械有限公司 | Profile modeling screw cutting process instrument lathe |
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2016
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| CN106670594A (en) | 2017-05-17 |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20180627 Address after: 221400 Taihang Mountain Road, north ditch town, Xinyi City, Xuzhou, Jiangsu, 38 Applicant after: Xuzhou Lida sewing equipment manufacturing Co., Ltd. Address before: 314416 Wei Peng Yan tou 6, Peng Dun village, Yuanhua Town, Haining City, Jiaxing, Zhejiang Applicant before: Zhou Xiaofei |
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