CN111496328B - Thread machining device - Google Patents
Thread machining device Download PDFInfo
- Publication number
- CN111496328B CN111496328B CN202010341740.7A CN202010341740A CN111496328B CN 111496328 B CN111496328 B CN 111496328B CN 202010341740 A CN202010341740 A CN 202010341740A CN 111496328 B CN111496328 B CN 111496328B
- Authority
- CN
- China
- Prior art keywords
- gear
- gear shaft
- thread
- cylinder
- assembly
- 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
Images
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
Abstract
The invention provides a thread machining device, which comprises a driving gear assembly and at least 1 driven gear assembly, wherein the driving gear assembly comprises a first gear shaft, a first gear and a second gear, wherein the first gear and the second gear are fixedly connected to the first gear shaft; the driven gear assembly comprises a second gear shaft connected with the first gear, a third gear shaft sleeved on the second gear shaft and connected with the second gear, a first guide part in threaded connection with the second gear shaft, and a second guide part in threaded connection with the third gear shaft. The thread processing device provided by the invention is suitable for processing small-size parts because the gear shaft is used for processing the internal threads of the parts, and can realize the effect of simultaneously processing and forming two types of threads in the parts by utilizing the coaxial characteristics of the two stages of gear shafts, and the threads can be demoulded by reversely rotating after a product is formed, so that the operation is convenient.
Description
Technical Field
The invention relates to the technical field of machining equipment, in particular to a thread machining device.
Background
When the internal thread of a part is machined in the prior art, a technical scheme of slider forming is generally adopted, but for small-sized parts, the internal space of the part is very small, the internal diameter is only about 16mm, the mode of machining the internal thread of the part by using the conventional slider cannot be implemented, the conventional thread machining device is not suitable for forming and machining the internal thread of the small-sized part, two threads in the part cannot be simultaneously machined, and the demoulding is inconvenient.
Therefore, the prior art is still to be improved.
Disclosure of Invention
In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide a thread machining device, which is intended to solve the technical problems that the prior thread machining device is not suitable for machining internal threads of small-sized parts and is inconvenient to demold.
The technical scheme of the invention is as follows:
a thread machining device comprises a driving gear assembly and at least 1 driven gear assembly;
the driving gear assembly comprises a first gear shaft, a first gear and a second gear, wherein the first gear and the second gear are fixedly connected to two ends of the first gear shaft respectively;
the driven gear assembly comprises a second gear shaft in meshed connection with the first gear, a third gear shaft sleeved on the second gear shaft and in meshed connection with the second gear, a first guide piece in threaded connection with the second gear shaft and used for guiding the second gear shaft to ascend and descend, and a second guide piece in threaded connection with the third gear shaft and used for guiding the third gear shaft to ascend and descend.
Optionally, the thread machining device further comprises a push-pull assembly for driving the first gear shaft to rotate, and the push-pull assembly comprises a rack and an oil cylinder connected with the rack.
Optionally, the thread machining device further includes a template assembly, and the first gear shaft, the second gear shaft and the third gear shaft are all mounted on the template assembly through bearings.
Optionally, the second gear shaft and the third gear shaft each include a gear portion, and a threaded connection portion and a threaded processing portion respectively disposed at both sides of the gear portion.
Optionally, the first guide part comprises a first cylinder, and a first guide thread is arranged on an inner wall of the first cylinder.
Optionally, a flange is arranged on the outer wall of the first cylinder, a plurality of arc chutes are arranged on the flange, and a bolt is arranged in each arc chute.
Optionally, the second guide part includes a second cylinder, a step portion is convexly arranged on the inner wall of the second cylinder, and a second guide thread is arranged on the step portion.
Optionally, the threaded connection portion of the third gear shaft is stepped.
Optionally, a gear ring is arranged on the outer wall of the second cylinder, and the second guide further comprises a stop block adapted to the gear ring.
Optionally, a cooling water channel is arranged inside the second gear shaft, and a water transfer adapter is arranged at one end of the threaded connection portion of the second gear shaft.
Has the advantages that: the invention provides a thread machining device, which comprises a driving gear assembly and at least 1 driven gear assembly, wherein the driving gear assembly comprises a first gear shaft, a first gear and a second gear, wherein the first gear and the second gear are fixedly connected to the first gear shaft; the driven gear assembly comprises a second gear shaft connected with the first gear, a third gear shaft sleeved on the second gear shaft and connected with the second gear, a first guide part in threaded connection with the second gear shaft, and a second guide part in threaded connection with the third gear shaft. The thread processing device provided by the invention is suitable for processing small-size parts because the gear shaft is used for processing the internal threads of the parts, and can realize the effect of simultaneously processing and forming two types of threads in the parts by utilizing the coaxial characteristics of the two stages of gear shafts, and the threads can be demoulded by reversely rotating after a product is formed, so that the operation is convenient.
Drawings
FIG. 1 is a schematic view of an assembly structure of a thread cutting apparatus according to the present invention;
FIG. 2 is an exploded view of a thread forming apparatus according to the present invention;
FIG. 3 is a schematic view of a connection structure of a first guide member according to the present invention;
FIG. 4 is a perspective view of a first guide member according to the present invention;
FIG. 5 is a schematic view showing a coupling structure of a second guide member according to the present invention;
FIG. 6 is a perspective view of a second guide member according to the present invention;
FIG. 7 is a schematic structural view of a template assembly according to the present invention;
the reference numbers in the drawings are as follows:
10-a drive gear assembly; 20-a driven gear assembly; 30-a first gear shaft; 40-a first gear; 50-a second gear; 60-a second gear shaft; 70-a third gear shaft; 80-a first guide; 90-a second guide; a 100-gear portion; 110-a threaded connection; 120-a thread finish; 130-a first cylinder; 140-a first guide thread; 150-a flange; 160-arc chute; 170-a bolt; 190-a second cylinder; 200-step portion; 210-a second guide thread; 220-gear ring; 230-a stop block; 240-a push-pull assembly; 250-a rack; 260-oil cylinder; 270-a bearing; 280-a first template; 290-a second template; 300-a third template; 310-a fourth template; 320-water transfer joint.
Detailed Description
The present invention provides a thread machining apparatus, and the present invention will be described in further detail below in order to make the object, technical solution, and effect of the present invention clearer and clearer. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 and 2, the present invention provides a thread machining apparatus, including a driving gear assembly 10, and at least 1 driven gear assembly 20;
the driving gear assembly 10 includes a first gear shaft 30, and a first gear 40 and a second gear 50 fixedly connected to both ends of the first gear shaft 30, respectively;
the driven gear assembly 20 includes a second gear shaft 60 engaged with the first gear 40, a third gear shaft 70 fitted over the second gear shaft 60 and engaged with the second gear 50, a first guide 80 threadedly coupled to the second gear shaft 60 for guiding the second gear shaft 60 to ascend and descend, and a second guide 90 threadedly coupled to the third gear shaft 70 for guiding the third gear shaft 70 to ascend and descend.
In some embodiments, the two ends of the first gear shaft 30 are stepped shafts, and the first gear 40 and the second gear 50 are fixedly disposed on the stepped shafts of the first gear shaft 30 by key connection, wherein the diameter of the first gear 40 is larger than that of the second gear 50.
In some embodiments, the second gear shaft 60 and the third gear shaft 70 each include a gear portion 100, and a threaded connection portion 110 and a threaded processing portion 120 respectively disposed at both sides of the gear portion 100. The top ends of the thread processing parts 120 of the second gear shaft 60 and the third gear shaft 70 are provided with processing threads matched with the inner threads of a product to be processed, the inside of the third gear shaft 70 is hollow, the third gear shaft 70 is integrally sleeved on the thread processing part 120 of the second gear shaft 60, the top end of the second gear shaft 60 extends out of the surface of the third gear shaft 70 to enable the processing threads at the top end of the second gear shaft 60 to be exposed, the second gear shaft 60 and the third gear shaft 70 are in clearance fit, namely, the second gear shaft 60 and the third gear shaft 70 can rotate mutually, and the second gear shaft 60 and the third gear shaft 70 are connected with the first guide part 80 and the second guide part 90 through the thread connecting part 110 respectively.
In some embodiments, the number of the driven gear assembly 20 may be set to 1 to 6, such as 1, 2, 3, 4 and 6, and in an embodiment where the driven gear assembly 20 is provided with at least 2, the processing threads on the thread processing portion 120 of each second gear shaft 60 of the driven gear assembly 20 may be the same, and the processing threads on the thread processing portion 120 of each third gear shaft 70 of the driven gear assembly 20 may be different, so that it is possible to solve the problem that one set of thread processing apparatuses simultaneously produces products having a plurality of internal thread types.
In the process of an actual production, the internal thread parameters of 2 products that this technical scheme needs to process are different, but the axle center is the same, wherein the inside of 1 product includes A screw thread and B screw thread, the inside of 1 product includes A screw thread and C screw thread in addition, the screw thread pitch and the rotation angle of B screw thread and C screw thread are all different, because 2 product internal threads are inequality but need shaping simultaneously and deviate from, through the thread processingequipment of this technical scheme, the different problem of solution screw thread angle can make the different number of turns of second gear shaft rotation solve, the pitch difference then can be solved into different pitches with the processing screw thread design at second gear shaft 60 top.
The technical scheme is that the working method of the specific thread machining device comprises the following steps: taking a product with threads a and B as an example, first, the first gear shaft 30 rotates in the forward direction together with the first gear 40 and the second gear 50, the first gear 40 rotates the second gear shaft 60, the screw thread A is processed upwards by rotating under the guidance of the first guiding piece 80, the second gear 50 drives the third gear shaft 70 to rotate, under the guidance of the second guiding element 90, the screw thread B is machined upwards in a rotating way, and after the machining of the screw thread a and the screw thread B is completed, then the first gear shaft 30 rotates reversely together with the first gear 40 and the second gear 50, and is rotated downward to be disengaged from the thread a, guided by the first guide 80, the second gear 50 rotates the third gear shaft 70, under the guidance of the second guide 90, the screw is rotated downwards to be separated from the screw thread B, and the processing of the product with the screw threads A and B is finished, and the same is true for the product with the screw threads A and C.
Referring to fig. 3 and 4, in some embodiments, the first guide member 80 includes a first cylinder 130, and a first guide thread 140 is disposed on an inner wall of the first cylinder 130. The first cylinder 130 has a hollow interior to form a lifting channel of the second gear shaft 60, the second gear shaft 60 is inserted into the first cylinder 130, the threaded connection portion of the second gear shaft 60 is in threaded connection with the first guide thread 140, and the height of the first guide thread 140 may be 1/4 of the height of the first cylinder 130.
Referring to fig. 4, in some embodiments, a flange 150 is disposed on an outer wall of the first cylinder 130, a plurality of arc chutes 160 are disposed on the flange 150, and latches 170 are disposed in the arc chutes 160. Before the thread processing device is operated, in order that the top end of the second gear shaft 60 can accurately receive a product to be processed, the position of the top end of the second gear shaft 60 can be adjusted by rotating the first cylinder 130, fine adjustment of the height of the second gear shaft 60 is achieved, and after the adjustment is completed, the first cylinder is fixed through the nut locking bolt 170.
Referring to fig. 5 and 6, in some embodiments, the second guiding element 90 includes a second cylinder 190, a step 200 is convexly disposed on an inner wall of the second cylinder 190, and a second guiding thread 210 is disposed on the step 200. The inner portion of the second cylinder 190 is hollowed to form a lifting channel of the third gear shaft 70, the bottom of the lifting channel is a stepped portion 200, the third gear shaft 70 is also inserted into the second cylinder 190, the threaded portion of the third gear shaft 70 is in threaded connection with the second guiding thread 210 on the stepped portion 200, and the height of the stepped portion 200 may be 1/2 of the height of the second cylinder 190.
In some embodiments, the threaded connection 110 of the third gear shaft 70 is stepped. The advantage of the step-shaped threaded connection portion 110 of the third gear shaft 70 lies in that, on the one hand, the threaded connection structure of the third gear shaft 70 and the second guide 90 can stabilize the process of the spiral up-and-down movement of the third gear shaft 70 due to the step, and on the other hand, the step also acts to limit the descending movement range of the third gear shaft 70, and prevent the third gear shaft 70 from damaging the components below the second guide 90 by penetrating through the second guide 90.
Referring to fig. 6, in some embodiments, the second cylinder 190 has a gear ring 220 disposed on an outer wall thereof, and the second guide 90 further includes a stopper 230 adapted to the gear ring 220. The stopping block 230 is provided with saw teeth for being clamped with the gear ring 220, the stopping block 230 and the gear ring 220 are arranged in a separable mode, when the thread cutting device is used specifically, namely before the thread cutting device runs, in order that the top end of the third gear shaft 70 can be accurately connected to a product to be machined, the position of the top end of the third gear shaft 70 can be adjusted by rotating the second cylinder 190, fine adjustment of the height of the third gear shaft 70 is achieved, and after the adjustment is completed, the stopping block 230 is clamped on the gear ring 220, and fixing of the second cylinder 190 is completed.
Referring to fig. 1, in some embodiments, the thread machining apparatus further includes a push-pull assembly 240 for driving the first gear shaft 30 to rotate, the push-pull assembly including a rack 250 and a cylinder 260 connected to the rack 250. In other embodiments, the push-pull assembly 240 may further include a rack 250 and a cylinder connected to the rack 250, or the push-pull assembly 240 may further include a rack 250 and a driving motor connected to the rack 250. When the oil cylinder is used for realizing reciprocating motion, a speed reducer can be omitted, no transmission gap exists, and the motion is stable.
Referring to fig. 7, in some embodiments, the thread forming apparatus further includes a die plate assembly 260, and the first gear shaft 30, the second gear shaft 60, and the third gear shaft 70 are all mounted on the die plate assembly 260 by bearings 270.
When the screw thread processing device is assembled, first, the first gear 40 and the second gear 50 are assembled to the first gear shaft 30, then, the third gear shaft 70 is mounted to the second gear shaft 60, the second guide 90 is mounted to the third gear shaft 70 and the first guide 80 is mounted to the second gear shaft 60, and then the assembled first gear shaft 30, second gear shaft 60 and third gear shaft 70 are mounted to the die plate assembly 260 through bearings, in some embodiments, referring to fig. 7, the template assembly 260 includes a first template 280, a second template 290, a third template 300 and a fourth template 310, which are sequentially stacked, and specifically, both ends of the first gear shaft 30 are respectively mounted on the first template 280 and the third template 300, the upper end of the third gear shaft is mounted on the first template 280 through a bearing, the first guide 80 is mounted on the second template 290, and the second guide 90 is mounted on the third template 300.
Referring to fig. 3, in some embodiments, a cooling water channel is provided inside the second gear shaft 60, and a water transfer joint 320 is provided at one end of the threaded connection portion 110 of the second gear shaft 60. The function of the water transfer joint is to transfer cooling water to the cooling water channel inside the second gear shaft 60, and the water transfer joint 320 is specifically provided in the fourth template 310 of the template assembly 260.
In summary, the present invention provides a thread processing apparatus, which includes a driving gear assembly and at least 1 driven gear assembly, wherein the driving gear assembly includes a first gear shaft, a first gear and a second gear fixedly connected to the first gear shaft; the driven gear assembly comprises a second gear shaft connected with the first gear, a third gear shaft sleeved on the second gear shaft and connected with the second gear, a first guide part in threaded connection with the second gear shaft, and a second guide part in threaded connection with the third gear shaft. The thread processing device provided by the invention is suitable for processing small-size parts because the gear shaft is used for processing the internal threads of the parts, and can realize the effect of simultaneously processing and forming two types of threads in the parts by utilizing the coaxial characteristics of the two stages of gear shafts, and the threads can be demoulded by reversely rotating after a product is formed, so that the operation is convenient.
It is to be understood that the invention is not limited to the examples described above, but that modifications and variations may be effected thereto by those of ordinary skill in the art in light of the foregoing description, and that all such modifications and variations are intended to be within the scope of the invention as defined by the appended claims.
Claims (9)
1. A thread machining device is characterized by comprising a driving gear assembly and at least 1 driven gear assembly;
the driving gear assembly comprises a first gear shaft, a first gear and a second gear, wherein the first gear and the second gear are fixedly connected to two ends of the first gear shaft respectively;
the driven gear assembly comprises a second gear shaft in meshed connection with the first gear, a third gear shaft sleeved on the second gear shaft and in meshed connection with the second gear, a first guide piece in threaded connection with the second gear shaft and used for guiding the second gear shaft to ascend and descend, and a second guide piece in threaded connection with the third gear shaft and used for guiding the third gear shaft to ascend and descend;
the second gear shaft and the third gear shaft each include a gear portion, and a thread coupling portion and a thread processed portion respectively provided at both sides of the gear portion.
2. The thread forming apparatus as claimed in claim 1, further comprising a push-pull assembly for driving said first gear shaft to rotate, said push-pull assembly including a rack, and a cylinder connected to said rack.
3. The thread forming apparatus according to claim 1 or 2, further comprising a die plate assembly, the first gear shaft, the second gear shaft, and the third gear shaft being each mounted on the die plate assembly by a bearing.
4. The thread forming apparatus according to claim 1, wherein the first guide member comprises a first cylinder, and a first guide thread is provided on an inner wall of the first cylinder.
5. The thread forming apparatus according to claim 4, wherein a flange is provided on an outer wall of the first cylinder, and a plurality of arc-shaped sliding grooves are provided on the flange, and a latch is provided in the arc-shaped sliding grooves.
6. The thread forming apparatus according to claim 1, wherein the second guide member comprises a second cylinder, and a stepped portion is provided on an inner wall of the second cylinder in a protruding manner, and a second guide thread is provided on the stepped portion.
7. The thread processing apparatus according to claim 6, wherein said thread connecting portion of said third gear shaft is stepped.
8. The thread forming apparatus according to claim 6, wherein a ring gear is provided on an outer wall of the second cylinder, and the second guide further comprises a stopper fitted to the ring gear.
9. The thread forming apparatus according to claim 1, wherein a cooling water passage is provided inside the second gear shaft, and a water transfer joint is provided at one end of the threaded portion of the second gear shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010341740.7A CN111496328B (en) | 2020-04-27 | 2020-04-27 | Thread machining device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010341740.7A CN111496328B (en) | 2020-04-27 | 2020-04-27 | Thread machining device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111496328A CN111496328A (en) | 2020-08-07 |
| CN111496328B true CN111496328B (en) | 2021-06-29 |
Family
ID=71866453
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010341740.7A Active CN111496328B (en) | 2020-04-27 | 2020-04-27 | Thread machining device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111496328B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2323482A1 (en) * | 1975-09-15 | 1977-04-08 | Zumbrunn Jean | Cinematic transmission for thread cutting tool - includes eccentric connecting rod to reciprocate rack and control tool advance and withdrawal |
| CN1457952A (en) * | 2003-04-28 | 2003-11-26 | 北京航空航天大学 | Knife handle type vibrative screw tapping device |
| CN102581393A (en) * | 2012-03-07 | 2012-07-18 | 苏州优备精密电子有限公司 | Device for machining LCD (liquid crystal display) threaded hole |
| CN103223535A (en) * | 2013-04-17 | 2013-07-31 | 黄剑辉 | Overall-hanging intra-mould tapping device |
| CN104907646A (en) * | 2015-06-15 | 2015-09-16 | 速技能机械制造(常熟)有限公司 | High-precision, large-diameter and servo-feeding tapping power head |
| CN204954076U (en) * | 2015-07-02 | 2016-01-13 | 东莞市森川机械工具有限公司 | A attack tooth mechanism in mould for processing denticle apart from screw thread |
| CN206343716U (en) * | 2016-12-16 | 2017-07-21 | 杭州吉众机电股份有限公司 | Self-tapping apparatus in mould |
| CN208132456U (en) * | 2018-04-10 | 2018-11-23 | 安徽得高金属制品有限公司 | A kind of fixed device of screw tap |
-
2020
- 2020-04-27 CN CN202010341740.7A patent/CN111496328B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2323482A1 (en) * | 1975-09-15 | 1977-04-08 | Zumbrunn Jean | Cinematic transmission for thread cutting tool - includes eccentric connecting rod to reciprocate rack and control tool advance and withdrawal |
| CN1457952A (en) * | 2003-04-28 | 2003-11-26 | 北京航空航天大学 | Knife handle type vibrative screw tapping device |
| CN102581393A (en) * | 2012-03-07 | 2012-07-18 | 苏州优备精密电子有限公司 | Device for machining LCD (liquid crystal display) threaded hole |
| CN103223535A (en) * | 2013-04-17 | 2013-07-31 | 黄剑辉 | Overall-hanging intra-mould tapping device |
| CN104907646A (en) * | 2015-06-15 | 2015-09-16 | 速技能机械制造(常熟)有限公司 | High-precision, large-diameter and servo-feeding tapping power head |
| CN204954076U (en) * | 2015-07-02 | 2016-01-13 | 东莞市森川机械工具有限公司 | A attack tooth mechanism in mould for processing denticle apart from screw thread |
| CN206343716U (en) * | 2016-12-16 | 2017-07-21 | 杭州吉众机电股份有限公司 | Self-tapping apparatus in mould |
| CN208132456U (en) * | 2018-04-10 | 2018-11-23 | 安徽得高金属制品有限公司 | A kind of fixed device of screw tap |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111496328A (en) | 2020-08-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR930004106B1 (en) | Dual stroke transfer device | |
| US5551270A (en) | Extrusion forming of internal helical splines | |
| CN111496328B (en) | Thread machining device | |
| CN1230273C (en) | Assembling type axial cam knurling type connection automatic assembling machine | |
| CN212969331U (en) | Four-column guide pull rod type electric cylinder | |
| US5752789A (en) | Right angle peck drill | |
| DE4124538C2 (en) | Device for processing workpieces with an outer and / or inner edge deviating from the circular shape | |
| WO2023051010A1 (en) | Universal fixture, robot, and unlocking system | |
| US5303604A (en) | Feed system | |
| US5127256A (en) | Apparatus for adjusting a slide stroke of a press machine | |
| CN113399484B (en) | Screw pump bush forming machine | |
| CN109500601A (en) | A kind of numerical-control turn-milling combined-machining equipment | |
| US3545018A (en) | Method and apparatus for cutting multiple threads in large workpieces | |
| CN104455286A (en) | Spiral lifting mechanism | |
| CN209532184U (en) | A kind of multi-station hydraulic motor end cap boring device | |
| CN208929654U (en) | A kind of screw thread pair automatic screwing device | |
| CN2747004Y (en) | Machine for processing internal hole | |
| CN216230524U (en) | Twisted tooth core-withdrawing mechanism | |
| CN112317824A (en) | Make things convenient for support arc mouth milling unit of centre gripping | |
| CN108788903A (en) | A method of extending the CNC milling machine service life | |
| TW201628766A (en) | Straight movement type static pressure servo dynamic power main shaft head and work method thereof | |
| CN220409494U (en) | Mould convenient to equipment | |
| CN213613901U (en) | Pole head ejection die | |
| CN108907691A (en) | A kind of screw thread pair automatic screwing device | |
| CN216371674U (en) | Vertical mill spindle angle adjusting mechanism |
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 |