CN108994348A - A kind of limiting tool of machined bottom - Google Patents
A kind of limiting tool of machined bottom Download PDFInfo
- Publication number
- CN108994348A CN108994348A CN201810848821.9A CN201810848821A CN108994348A CN 108994348 A CN108994348 A CN 108994348A CN 201810848821 A CN201810848821 A CN 201810848821A CN 108994348 A CN108994348 A CN 108994348A
- Authority
- CN
- China
- Prior art keywords
- half round
- pilot hole
- round seat
- upper half
- limit plate
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B47/00—Constructional features of components specially designed for boring or drilling machines; Accessories therefor
- B23B47/28—Drill jigs for workpieces
- B23B47/281—Jigs for drilling cylindrical parts
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling And Boring (AREA)
Abstract
The invention discloses a kind of limiting tools of machined bottom, belong to field of machining.Limiting tool includes: clamping pedestal, limit plate and two sliding blocks, clamping pedestal includes upper half round seat and lower half round seat, upper half round seat and lower half round seat are removably mounted on together, to constitute the clamping space for accommodating oil pipe, the first pilot hole is provided at the top of upper half round seat, first pilot hole is connected to clamping space, the two sides of upper half round seat are provided with sliding slot, two sliding slots are along the axially extending of the first pilot hole, one sliding block is slideably inserted into a sliding slot, another sliding block is slideably inserted into another sliding slot, lock-screw is provided on the side wall of two sliding slots, each lock-screw is used to contradict corresponding sliding block, limit plate is fixedly clamped between two sliding blocks, the second pilot hole is provided on limit plate, second pilot hole and the first pilot hole are coaxially arranged.The present invention can control the hole depth of bottom outlet.
Description
Technical field
The invention belongs to field of machining, in particular to a kind of limiting tool of machined bottom.
Background technique
In tuning for Controllable Pitch Propeller, axis inner oil tube is usually made of multistage pipe nipple oil pipe, is threadedly coupled between each pipe nipple oil pipe.Due to
Axis inner oil tube is in rotation status at work, so loosening between pipe nipple oil pipe in order to prevent, it usually needs in two pipe nipples
The junction axis of oil pipe inserts radial positioning pin.
When processing the bottom outlet for inserting radial positioning pin on the tube wall of pipe nipple oil pipe, in order to guarantee that hole depth meets design
It is required that, it will usually it makes a mark on drill bit.During machined bottom, as drill bit gos deep into the pipe wall, when label and bore
When the opening in hole is concordant, indicate that hole depth has been machined into position.
However, the above-mentioned control method to hole depth, higher to the operation level requirement of worker, once because not noticing mark
Note, and drill bit is caused not stop in time, will lead to tube wall is drilled out, and oil pipe is scrapped.
Summary of the invention
The embodiment of the invention provides a kind of limiting tools of machined bottom, can control the hole depth of bottom outlet.The technology
Scheme is as follows:
The embodiment of the invention provides a kind of limiting tool of machined bottom, the limiting tool includes: clamping pedestal, limit
Position plate and two sliding blocks, the clamping pedestal include upper half round seat and lower half round seat, the upper half round seat and the lower half round seat
It is removably mounted on together, to constitute the clamping space for accommodating oil pipe, is provided with first at the top of the upper half round seat
Pilot hole, first pilot hole are connected to the clamping space, and the two sides of the upper half round seat are provided with sliding slot, two institutes
Sliding slot is stated along the axially extending of first pilot hole, a sliding block is slideably inserted into the sliding slot,
Another described sliding block is slideably inserted into another described sliding slot, and locking is provided on the side wall of two sliding slots
Screw, each lock-screw are used to contradict corresponding sliding block, and the limit plate is fixedly clamped on described in two
Between sliding block, the second pilot hole is provided on the limit plate, second pilot hole and first pilot hole are coaxially arranged.
In a kind of implementation of the invention, the two sides of the lower half round seat are provided with installation base, each described
It is provided with the jack for inserting fixing bolt on installation base, is provided in the upper half round seat and the fixing bolt phase
Matched screw hole.
In another implementation of the invention, be fitted with drill bushing in first pilot hole, the drill bushing with it is described
First pilot hole is coaxially arranged.
In another implementation of the invention, bearing, the outer wall of the bearing are fitted in second pilot hole
It is fixedly connected with the hole wall of second pilot hole, the bearing and second pilot hole are coaxially arranged.
In another implementation of the invention, the internal diameter of the bearing is identical with the internal diameter of the drill bushing.
In another implementation of the invention, the bearing is ball bearing.
In another implementation of the invention, one end of the limit plate is bolted with a sliding block, institute
The other end and sliding block described in another for stating limit plate are bolted.
In another implementation of the invention, the bottom surface of limit plate cloth opposite with the top surface of the upper half round seat
It sets, and the bottom surface of the limit plate and the top surface of the upper half round seat are parallel to each other.
In another implementation of the invention, multiple lock-screws are provided on the side wall of the sliding slot, it is each described
Lock-screw is arranged along the length direction equidistant interval of the sliding slot.
In another implementation of the invention, it is provided on the inner wall of the upper half round seat and the lower half round seat
Gasket.
Technical solution provided in an embodiment of the present invention has the benefit that
Through the embodiment of the present invention when provided limiting tool machined bottom, first by upper half round seat and lower half circle cover for seat
It is filled on oil pipe, so that oil pipe, then according to the design hole depth of bottom outlet, adjusts limit plate and upper half by clamping to clamping space
Spacing between round seat, after adjusting, by lock-screw by sliding block locked and fixed in sliding slot, thus complete limit work
The whole installation process of dress.Drill bit is successively protruded into the second pilot hole and the first pilot hole, and is offseted with the outer wall of oil pipe.Starting
Drill bit, with the oil pipe that pierces of drill bit, the brill of drilling machine pricks head and will finally offset with the opening of the second pilot hole, at this time the hole of bottom outlet
Deep is design hole depth.That is, limiting tool provided by the embodiment of the present invention, can effectively control the bottom processed
The hole depth in hole, and it is easy to operate.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is the cross-sectional view of limiting tool provided in an embodiment of the present invention；
Fig. 2 is the top view of clamping pedestal provided in an embodiment of the present invention；
Fig. 3 is the front view of clamping pedestal provided in an embodiment of the present invention；
Fig. 4 is the use schematic diagram of limiting tool provided in an embodiment of the present invention；
Fig. 5 is the top view of limit plate provided in an embodiment of the present invention；
Each symbol indicates that meaning is as follows in figure:
1- clamping pedestal, 11- upper half round seat, the first pilot hole of 111-, 112- sliding slot, 113- lock-screw, 114- drill bushing,
12- lower half round seat, 121- installation base, 122- fixing bolt, 2- limit plate, the second pilot hole of 21-, 22- bearing, 23- card slot,
3- sliding block, 100- oil pipe, a- clamping space.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is described in further detail.
The embodiment of the invention provides a kind of limiting tools of machined bottom, as shown in Figure 1, limiting tool includes: clamping
Pedestal 1, limit plate 2 and two sliding blocks 3, clamping pedestal 1 include upper half round seat 11 and lower half round seat 12, upper half round seat 11 and lower half
Round seat 12 is removably mounted on together, and to constitute the clamping space a for accommodating oil pipe, the top of upper half round seat 11 is provided with
First pilot hole 111, the first pilot hole 111 are connected to clamping space a, and the two sides of upper half round seat 11 are provided with sliding slot 112 (in detail
See Fig. 2), for two sliding slots 112 along the axially extending of the first pilot hole 111, a sliding block 3 is slideably inserted into a sliding slot
In 112, another sliding block 3 is slideably inserted into another sliding slot 112, and lock is provided on the side wall of two sliding slots 112
Tight screw 113 (being detailed in Fig. 3), each lock-screw 113 are used to contradict corresponding sliding block 3, and limit plate 2 is fixedly clamped on two
Between a sliding block 3, the second pilot hole 21 is provided on limit plate 2, the second pilot hole 21 and the first pilot hole 111 are coaxially arranged.
Fig. 4 is limiting tool using schematic diagram, and in conjunction with Fig. 4, provided limiting tool adds through the embodiment of the present invention
When work bottom outlet, upper half round seat 11 and 12 sets of lower half round seat are filled on oil pipe first, so that oil pipe 100 is by clamping to clamping space
In a, then according to the design hole depth of bottom outlet, the spacing between limit plate 2 and upper half round seat 11 is adjusted, after adjusting, is led to
Lock-screw 113 is crossed by 3 locked and fixed of sliding block in sliding slot 112, to complete the whole installation process of limiting tool.By drill bit
The second pilot hole 21 and the first pilot hole 111 are successively protruded into, and is offseted with the outer wall of oil pipe 100.Start drill bit, with drill bit
Oil pipe 100 is pierced, the brill of drilling machine pricks head and will finally offset with the opening of the second pilot hole 21, and the hole depth of bottom outlet is to design at this time
Hole depth.That is, limiting tool provided by the embodiment of the present invention, can effectively control the hole depth of the bottom outlet processed,
And it is easy to operate.
Optionally, it is provided with gasket on the inner wall of upper half round seat 11 and lower half round seat 12, so as to avoid upper half round seat
11 and lower half round seat 12 during clamping oil pipe 100, oil pipe 100 is caused to damage.
In the present embodiment, the two sides of lower half round seat 12 are provided with installation base 121, on each installation base 121
It is provided with the jack for inserting fixing bolt 122, the screw hole to match with fixing bolt 122 is provided in upper half round seat 11.
In above-mentioned implementation, installation base is used to provide installation foundation for fixing bolt 122, is passing through upper half round seat
11 and when 12 clamping oil pipe 100 of lower half round seat, upper half round seat 11 and 12 sets of lower half round seat are filled on oil pipe 100 respectively first,
Then the fixing bolt 122 being inserted into jack is screwed to corresponding screw hole, to be furthered upper half by fixing bolt 122
The distance between round seat 11 and lower half round seat 12, to achieve the purpose that clamp oil pipe 100.
Optionally, drill bushing 114 is fitted in the first pilot hole 111, drill bushing 114 and the first pilot hole 111 are coaxially arranged.
In above-mentioned implementation, drill bushing 114 can be wear-resistant material, play guarantor with the inner wall to the first pilot hole 111
Shield effect, avoids the first pilot hole 111 from being deformed by bit breakage, the first pilot hole 111 is caused good can not to play orientation drill
The effect of head.
Optionally, it is fitted with bearing 22 in the second pilot hole 21, the hole wall of the outer wall of bearing 22 and the second pilot hole 21 is solid
Fixed connection, bearing 22 and the second pilot hole 21 are coaxially arranged.
In above-mentioned implementation, pierce oil pipe 100 with drill bit, the brill of drilling machine prick head finally by in bearing 22
Circle offsets, and the inner ring of bearing 22 can be pricked first with rotation with the brill of drilling machine at this time, pricks head to second to avoid the brill of drilling machine
The opening of pilot hole 21 directly contacts, and generates abrasion.That is, playing protection to the second pilot hole 21 by bearing 22
Effect.
Preferably, the internal diameter of bearing 22 is identical with the internal diameter of drill bushing 114.
In above-mentioned implementation, if the internal diameter of drill bushing 114 is greater than the internal diameter of bearing 22, when drill bit protrudes into bearing
After 22, during extending further into drill bushing 114, it is possible to can and drill bushing 114 generate interference, cause drill bit and drill bushing 114 it
Between collide with.If the internal diameter of drill bushing 114 is less than the internal diameter of bearing 22, when drill bit successively protrudes into bearing 22 and drill bushing
After 114, since the internal diameter of drill bushing 114 is larger, it is possible to cause the bottom of drill bit crooked, the bottom outlet processed not can guarantee
Verticality.
Preferably, bearing 22 is ball bearing, so as to which big using ball bearing load, structure is simple, anti-dust performance
Strong feature improves the reliability of limiting tool.
With continued reference to Fig. 1, in the present embodiment, one end of limit plate 2 is bolted with a sliding block 3, limit plate 2 it is another
One end is bolted with another sliding block 3.
Fig. 5 is the top view of limit plate, and in conjunction with Fig. 5, the two sides of limit plate 2 are respectively arranged with card slot 23, two sliding blocks 3
Top is inserted into respectively in corresponding card slot 23, and is bolted to connection.
Optionally, the bottom surface of limit plate 2 and the top surface of upper half round seat 11 are positioned opposite, and the bottom surface of limit plate 2 and upper half
The top surface of round seat 11 is parallel to each other.
In above-mentioned implementation, by the top surface of the bottom surface of limit plate 2 and upper half round seat 11 it is arranged in parallel be mutual
In parallel, the distance between limit plate 2 and upper half round seat 11 can be observed in order to worker, with preferably to limit plate 2 relative to
The position of upper half round seat 11 is adjusted.
Referring to Fig. 3, in the present embodiment, multiple lock-screws 113, each lock-screw are provided on the side wall of sliding slot 112
113 along the chute 112 length direction equidistant interval arrangement, be inserted into the cunning in sliding slot 112 so as to more firm locking
Block 3.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of limiting tool of machined bottom, which is characterized in that the limiting tool includes: clamping pedestal, limit plate and two
A sliding block, the clamping pedestal include upper half round seat and lower half round seat, and the upper half round seat and the lower half round seat are removably
It is installed together, to constitute the clamping space for accommodating oil pipe, is provided with the first pilot hole, institute at the top of the upper half round seat
It states the first pilot hole to be connected to the clamping space, the two sides of the upper half round seat are provided with sliding slot, and two sliding slots are equal
Along the axially extending of first pilot hole, a sliding block is slideably inserted into the sliding slot, another institute
It states sliding block to be slideably inserted into another described sliding slot, lock-screw is provided on the side wall of two sliding slots, respectively
The lock-screw is used to contradict corresponding sliding block, the limit plate be fixedly clamped on two sliding blocks it
Between, the second pilot hole is provided on the limit plate, second pilot hole and first pilot hole are coaxially arranged.
2. limiting tool according to claim 1, which is characterized in that it is convex that the two sides of the lower half round seat are provided with installation
Platform is provided with the jack for inserting fixing bolt on each installation base, is provided in the upper half round seat and institute
State the screw hole that fixing bolt matches.
3. limiting tool according to claim 1, which is characterized in that it is fitted with drill bushing in first pilot hole, it is described
Drill bushing and first pilot hole are coaxially arranged.
4. limiting tool according to claim 3, which is characterized in that it is fitted with bearing in second pilot hole, it is described
The outer wall of bearing is fixedly connected with the hole wall of second pilot hole, and the bearing and second pilot hole are coaxially arranged.
5. limiting tool according to claim 4, which is characterized in that the internal diameter phase of the internal diameter of the bearing and the drill bushing
Together.
6. limiting tool according to claim 4, which is characterized in that the bearing is ball bearing.
7. limiting tool according to claim 1, which is characterized in that one end of the limit plate and a sliding block spiral shell
It tethers and connects, the other end and the sliding block described in another of the limit plate are bolted.
8. limiting tool according to claim 1, which is characterized in that the bottom surface of the limit plate and the upper half round seat
Top surface is positioned opposite, and the bottom surface of the limit plate and the top surface of the upper half round seat are parallel to each other.
9. limiting tool according to claim 1, which is characterized in that be provided with multiple locking screws on the side wall of the sliding slot
Nail, each lock-screw are arranged along the length direction equidistant interval of the sliding slot.
10. limiting tool according to claim 1, which is characterized in that the upper half round seat and the lower half round seat it is interior
Gasket is provided on wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810848821.9A CN108994348B (en) | 2018-07-28 | 2018-07-28 | Spacing frock of processing bottom outlet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810848821.9A CN108994348B (en) | 2018-07-28 | 2018-07-28 | Spacing frock of processing bottom outlet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108994348A true CN108994348A (en) | 2018-12-14 |
| CN108994348B CN108994348B (en) | 2020-11-17 |
Family
ID=64597626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810848821.9A Active CN108994348B (en) | 2018-07-28 | 2018-07-28 | Spacing frock of processing bottom outlet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108994348B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109927868A (en) * | 2019-01-31 | 2019-06-25 | 武汉船用机械有限责任公司 | The fixed structure of tuning for Controllable Pitch Propeller |
| CN110238428A (en) * | 2019-05-17 | 2019-09-17 | 陕西飞机工业（集团）有限公司 | A kind of through-hole drill jig |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3125904A (en) * | 1964-03-24 | olivier | ||
| FR2195497A1 (en) * | 1972-08-07 | 1974-03-08 | Hilti Ag | Metal surface cleaning-up device - comprised limited travel grinding or milling disc |
| CH566836A5 (en) * | 1973-07-10 | 1975-09-30 | Dell Oro Emilio | Manual power drill guide for square position - has holding and base plate connected by spring loaded pins |
| EP0037712A2 (en) * | 1980-04-02 | 1981-10-14 | Peter Charles Buyskes Abrahams | Machining jig |
| DE29512827U1 (en) * | 1995-08-09 | 1995-12-07 | Seegers, Gunnar, 31224 Peine | Borehole depth stop |
| CN201008994Y (en) * | 2007-03-27 | 2008-01-23 | 溧阳市科华机械制造有限公司 | Float drilling jig for group-machining holes with same depth |
| CN201792009U (en) * | 2010-09-02 | 2011-04-13 | 安徽全柴动力股份有限公司 | Process device for controlling depth processing of cylinder cover valve seat ring hole of diesel engine |
| CN202894421U (en) * | 2012-11-19 | 2013-04-24 | 陕西理工学院 | Tube wall drill fixture |
| CN203409315U (en) * | 2013-07-24 | 2014-01-29 | 芜湖中山科技有限公司 | Tool for drilling tangential hole in cylindrical workpiece |
| CN203578855U (en) * | 2013-10-19 | 2014-05-07 | 浙江万邦汽车动力***有限公司 | Drilling tool for cover plate |
| CN104439419A (en) * | 2014-11-28 | 2015-03-25 | 天津安顺成金属制品有限公司 | Rapid clamping and drilling mould for machining of side hole of round steel |
| CN204657550U (en) * | 2015-06-08 | 2015-09-23 | 贵州航太精密制造有限公司 | A kind of boring grab of guide colume type spring clamp |
| CN204818183U (en) * | 2015-04-22 | 2015-12-02 | 内蒙古第一机械集团有限公司 | Radial haplopore of cylindrical parts footpath or multiple aperture processing multipurpose plant |
-
2018
- 2018-07-28 CN CN201810848821.9A patent/CN108994348B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3125904A (en) * | 1964-03-24 | olivier | ||
| FR2195497A1 (en) * | 1972-08-07 | 1974-03-08 | Hilti Ag | Metal surface cleaning-up device - comprised limited travel grinding or milling disc |
| CH566836A5 (en) * | 1973-07-10 | 1975-09-30 | Dell Oro Emilio | Manual power drill guide for square position - has holding and base plate connected by spring loaded pins |
| EP0037712A2 (en) * | 1980-04-02 | 1981-10-14 | Peter Charles Buyskes Abrahams | Machining jig |
| DE29512827U1 (en) * | 1995-08-09 | 1995-12-07 | Seegers, Gunnar, 31224 Peine | Borehole depth stop |
| CN201008994Y (en) * | 2007-03-27 | 2008-01-23 | 溧阳市科华机械制造有限公司 | Float drilling jig for group-machining holes with same depth |
| CN201792009U (en) * | 2010-09-02 | 2011-04-13 | 安徽全柴动力股份有限公司 | Process device for controlling depth processing of cylinder cover valve seat ring hole of diesel engine |
| CN202894421U (en) * | 2012-11-19 | 2013-04-24 | 陕西理工学院 | Tube wall drill fixture |
| CN203409315U (en) * | 2013-07-24 | 2014-01-29 | 芜湖中山科技有限公司 | Tool for drilling tangential hole in cylindrical workpiece |
| CN203578855U (en) * | 2013-10-19 | 2014-05-07 | 浙江万邦汽车动力***有限公司 | Drilling tool for cover plate |
| CN104439419A (en) * | 2014-11-28 | 2015-03-25 | 天津安顺成金属制品有限公司 | Rapid clamping and drilling mould for machining of side hole of round steel |
| CN204818183U (en) * | 2015-04-22 | 2015-12-02 | 内蒙古第一机械集团有限公司 | Radial haplopore of cylindrical parts footpath or multiple aperture processing multipurpose plant |
| CN204657550U (en) * | 2015-06-08 | 2015-09-23 | 贵州航太精密制造有限公司 | A kind of boring grab of guide colume type spring clamp |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109927868A (en) * | 2019-01-31 | 2019-06-25 | 武汉船用机械有限责任公司 | The fixed structure of tuning for Controllable Pitch Propeller |
| CN110238428A (en) * | 2019-05-17 | 2019-09-17 | 陕西飞机工业（集团）有限公司 | A kind of through-hole drill jig |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108994348B (en) | 2020-11-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108994348A (en) | A kind of limiting tool of machined bottom | |
| CN103128574A (en) | Auxiliary tool for accurate locating drilling | |
| CN103015892B (en) | Tapered stabilizer and system thereof | |
| CN218836936U (en) | Main shaft handle of a knife clamping structure | |
| CN208743762U (en) | A kind of tooling used when brill valve rocker inclined oil hole of air | |
| CN203679359U (en) | Deep hole drill | |
| CN105215729A (en) | A kind of clamping jig and using method thereof | |
| CN109290802A (en) | A kind of drilling of y-type filter body multistation and chasing bar | |
| CN104879086A (en) | Packer and fishing tool | |
| CN212704447U (en) | Drill bit guide mechanism for drilling machine | |
| CN211727585U (en) | Appurtenance based on downthehole grooving | |
| CN105345093A (en) | Processing device and processing method of inclined oil hole in air cylinder body through hole | |
| CN109267752B (en) | Concrete drilling hole drilling cutter for building construction | |
| US7708087B2 (en) | Countersink roof bit drill and method for using the same | |
| CN102756331A (en) | Precise ball lock positioning gripping head | |
| CN208788075U (en) | A kind of clamping and positioning device | |
| CN209350402U (en) | A kind of auxiliary location structure of electric drill | |
| CN211030714U (en) | Concentric water bores drill bit | |
| CN202137431U (en) | Device for machining external arc of special-shaped drill pipes for exploration | |
| CN105290455A (en) | Drilling device for forming timing hole in balance shaft | |
| CN217800397U (en) | Clamp for machining drill bit powder discharge groove | |
| CN220882085U (en) | Zero point positioning device | |
| CN209578278U (en) | A kind of high intensity drilling machine drill bit connection structure | |
| CN204851158U (en) | Blanking plug and fishing tool | |
| CN217891998U (en) | Copper nut of screw press |
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 |