CN113118518A - Automatic chip breaking chuck for drilling - Google Patents
Automatic chip breaking chuck for drilling Download PDFInfo
- Publication number
- CN113118518A CN113118518A CN202110539245.1A CN202110539245A CN113118518A CN 113118518 A CN113118518 A CN 113118518A CN 202110539245 A CN202110539245 A CN 202110539245A CN 113118518 A CN113118518 A CN 113118518A
- Authority
- CN
- China
- Prior art keywords
- cutter bar
- vibration
- shell
- floating
- floating cutter
- 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.)
- Pending
Links
- 238000005553 drilling Methods 0.000 title claims abstract description 17
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 26
- 239000010959 steel Substances 0.000 claims abstract description 26
- 230000006835 compression Effects 0.000 claims abstract description 20
- 238000007906 compression Methods 0.000 claims abstract description 20
- 238000005520 cutting process Methods 0.000 claims abstract description 19
- 230000000694 effects Effects 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 6
- 230000009471 action Effects 0.000 claims abstract description 3
- 230000008569 process Effects 0.000 claims abstract description 3
- 230000001105 regulatory effect Effects 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 7
- 238000003825 pressing Methods 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 238000000926 separation method Methods 0.000 abstract description 3
- 238000003754 machining Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
- B23B51/12—Adapters for drills or chucks; Tapered sleeves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
Abstract
An automatic chip breaking chuck for drilling comprises a shell and a chip breaking rotating body positioned in the shell, wherein the chip breaking rotating body rotates in the shell; in the process that the floating cutter bar rotates along with the main shaft of the machine tool, the cam is in intermittent contact with the steel balls, and the floating cutter bar generates up-and-down micro-vibration motion under the action of the compression spring. The tool holder body rotates along with a main shaft of a machine tool to drive the floating tool bar to rotate, and the steel balls on the non-rotating vibration frequency ring and the cam on the rotating floating tool bar are in intermittent contact to generate an intermittent separation effect, so that the floating tool bar generates axial micro-vibration to achieve the purpose of breaking chips; in addition, the vibration frequency, the vibration amplitude and the vibration cutting resistance of the micro vibration can be adjusted, so that the micro vibration cutting machine can adapt to different cutting conditions.
Description
Technical Field
The invention relates to the field of drilling chucks, in particular to an automatic chip breaking chuck for drilling.
Background
When a metal part is drilled, for example, three conditions of drilling a tough material, high-speed cutting and deep hole machining, cutting chips wound around a cutter are easily generated, and when the wound cutting chips are serious, the cutter can be damaged, a machined part can be scratched, and a machine tool can be damaged, so that a chip breaking chuck capable of realizing an automatic chip breaking function on the cutting chips during hole drilling is expected by the industry.
The known prior hole drilling mechanical vibration type miniature chip breaking chuck mainly comprises a floating cutter bar with a special bearing and a non-rotary vibration amplitude modulation disc sleeved on the floating cutter bar, and mainly comprises the following structures: the inner hole of the chuck handle connected with the main shaft of the machine tool is directly sleeved on the outer circle of the elastic ring wound on the outer circle of the floating cutter bar, a special bearing with a flange at the inner ring is arranged at the middle section of the floating cutter bar, the outer ring of the bearing is fixedly connected in a non-rotary vibration amplitude modulation disc shell, a disc with an upper convex block and a rotary disc for adjusting the axial position of the convex block are also arranged in the shell, and the shell is fixedly connected with an outer slip ring on the outer circle of the chuck handle by a pull arm; when the floating cutter bar rotates, the flange at the lower end of the bearing inner ring is pushed by the inclined plane of the non-rotating lug, so that the floating cutter bar generates periodic axial micro-displacement, and the chip breaking function is realized.
However, the outer diameter of the elastic ring is directly sleeved with the inner hole of the chuck handle, so that the connection rigidity and the coaxiality precision are adversely affected; the flange at the lower end of the bearing inner ring is in sliding contact with the lug, so that cutter bar fluctuation and frictional heating are easily caused; the available scale-adjusting value serial number scribing areas marked on the end face of the turntable are only located in a narrow range of about 45 degrees in the circumferential direction of the turntable due to structural reasons and are not easy to distinguish; and the bearing is not standard and needs to be specially made.
Based on the above, the applicant provides a micro chip breaking chuck of a mechanical vibration type hole machining tool, which is disclosed as CN205798540U, and a rolling body and a bolt are used for a vibration and amplitude modulation mechanism, so that the reliability of automatic chip breaking and cutting is improved, and the adjustment of a stepped or stepless amplitude value can be realized; however, the structure is difficult to manufacture, the adjustment of the vibration frequency cannot be realized, the cutting resistance of the floating cutter bar cannot be changed, and the application range and the chip breaking effect of the floating cutter bar are limited.
Disclosure of Invention
The present invention is directed to a drill auto chip breaker chuck, which solves the problems set forth in the background of the invention, and is further described below.
An automatic chip breaking chuck for drilling comprises a shell and a chip breaking rotating body positioned in the shell, wherein the chip breaking rotating body rotates in the shell; the chip breaking swivel body comprises a cutter clamp body, a floating cutter bar, a steel ball and a tail handle; one end part of the knife clamp body is arranged in the shell, and the other end of the knife clamp body is exposed out of the upper end of the shell and is connected with the tail handle; one end part of the floating cutter bar is arranged in the sealing structure and synchronously rotates after being connected with the cutter holder body, a cam is arranged on the floating cutter bar, a compression spring is arranged in the floating cutter bar, and the compression spring is compressed by the cutter holder body and the floating cutter bar; the vibration amplitude disc is provided with steps, the vibration frequency ring is arranged on the steps of the vibration amplitude disc, the vibration frequency ring is provided with a plurality of steel ball mounting holes, and steel balls are arranged in the steel ball mounting holes; in the process that the floating cutter bar rotates along with the main shaft of the machine tool, the cam is in intermittent contact with the steel balls, and the floating cutter bar generates up-and-down micro-vibration motion under the action of the compression spring.
Preferably, the shell comprises an upper shell and a lower shell, and the upper shell and the lower shell are connected in a pressing mode.
Preferably, the floating cutter rod is provided with a convex shoulder, the convex shoulder is provided with meshing teeth, the floating cutter rod is meshed with the cutter holder body through the meshing teeth, torque is transmitted through the meshing teeth, and the floating cutter rod is linked with the cutter holder body.
Preferably, the inner hole of the floating cutter rod is matched with a pressure regulating screw rod.
It should be noted that: the center height of the steel ball can be changed by rotating the amplitude disc with steps, so that the effect of changing the amplitude of the floating cutter bar is achieved; meanwhile, the number of the steel balls is changed, so that the vibration frequency of the floating cutter bar can be changed to control the length of the broken chips; the matching height of the pressure regulating screw and the floating cutter bar is adjusted, so that the compression degree of the compression spring is changed, and the vibration cutting resistance of the floating cutter bar is changed.
Preferably, the tail handle on the tool holder body is in a sleeved connection, and different types of tail handles can be sleeved on the tool holder body according to the requirements of users so as to adapt to various machine tool spindles.
Preferably, the lower part of the floating cutter rod penetrates through the vibration frequency ring, the vibration amplitude disc and the lower shell and is connected with a spring clamp so as to clamp the cutter.
Has the advantages that: compared with the prior art, the tool holder body rotates along with the main shaft of the machine tool to drive the floating tool bar to rotate, and the steel balls on the non-rotating vibration frequency ring and the cam on the rotating floating tool bar are in intermittent contact to generate an intermittent separation effect, so that the floating tool bar generates axial micro-vibration to achieve the purpose of breaking chips; in addition, the vibration frequency, the vibration amplitude and the vibration cutting resistance of the micro vibration can be adjusted, so that the micro vibration cutting machine can adapt to different cutting conditions.
Drawings
FIG. 1: the invention has a structure schematic diagram;
in the figure: 1. the tool holder comprises a tool holder body, an upper shell, a floating tool bar, a meshing tooth, a lower shell, a cam, a ball, a pressure adjusting screw, a spring clamp, a tail handle, a compression spring, a vibration frequency ring and a vibration amplitude disc, wherein the upper shell is 2, the floating tool bar is 3, the meshing tooth is 4, the lower shell is 5, the cam is 6, the steel ball is 7, the pressure adjusting screw is 8, the spring clamp is 9, the.
Detailed Description
A specific embodiment of the present invention will be described in detail with reference to fig. 1.
An automatic chip breaking chuck for drilling comprises a tool holder body 1, an upper shell 2, a floating tool bar 3, meshing teeth 4, a lower shell 5, a cam 6, steel balls 7, a pressure regulating screw 8, a spring clamp 9, a tail handle 10, a compression spring 11, a vibration frequency ring 12 and a vibration amplitude disc 13; the upper shell 2 and the lower shell 5 are connected in a pressing mode to form a sealing structure, one end portion of the cutter holder body 1 is installed in the sealing structure, the other end portion of the cutter holder body 1 is exposed out of the upper end of the sealing structure and is connected with a tail handle 10, different types of the tail handle 10 can be selected to be suitable for being connected with main shafts of different machine tools, one end portion of the floating cutter rod 3 is arranged in the sealing structure, a convex shoulder is arranged on the floating cutter rod 3, meshing teeth 4 are arranged on the convex shoulder, the floating cutter rod 3 is meshed with the cutter holder body 1 through the meshing teeth 4, torque is transmitted through tooth meshing; the amplitude disc 13 is arranged on the lower shell 5, steps are arranged on the amplitude disc 13, the frequency ring 12 is arranged on the steps of the amplitude disc 13, a plurality of steel ball mounting holes are formed in the frequency ring 12, and a plurality of steel balls 7 can be placed in the frequency ring as required; still be provided with cam 6 on the cutter arbor 3 floats, cam 6 and steel ball 7 contact, set up compression spring 11 in the cutter arbor 3 floats, compression spring 11 one end is contradicted on cutter holder body 1, on the step face of the 3 holes of cutter arbor is floated in the other end effect, compression spring 11 is in the compressed state all the time, at the cutter arbor 3 random bed main shaft rotation in-process that floats, cam 6 and the contact of 7 intermittence of steel ball, the cutter arbor 3 produces upper and lower ground micro-vibration motion under compression spring 11's effect.
The invention adopts a method that the cutter generates mechanical axial micro-shock during feeding cutting to realize chip breaking, and the floating cutter bar generates axial micro-shock by resisting cutting force through the compression spring, which is like the effect of a vibration impact drill for crushing a cement surface.
It should be noted that the center height of the steel ball 7 can be changed by rotating the amplitude disc 13 with steps, so as to achieve the effect of changing the amplitude of the floating cutter bar 3; meanwhile, the vibration frequency of the floating cutter rod 3 can be changed by changing the number of the steel balls 7 so as to control the length of the broken chips.
In the invention, the compression spring 11 enables the floating cutter bar 3 to generate up-and-down micro-vibration motion, further, the inner hole of the floating cutter bar 3 is matched with the pressure regulating screw rod 8, and the compression degree of the compression spring 11, namely the vibration cutting resistance of the floating cutter bar 3 can be changed by adjusting the matching height of the pressure regulating screw rod 8 and the floating cutter bar 3.
The vibration frequency ring, the vibration amplitude disc, the compression spring and the small pressure regulating screw component can adjust the vibration frequency, the vibration amplitude and the vibration cutting resistance of the floating cutter rod so as to adapt to different cutting conditions, such as drilling of workpieces of different materials, different thicknesses and different diameters.
The tail handle 10 on the tool holder 1 is connected in a sleeving way, and different types of tail handles can be sleeved on the tool holder according to the requirements of users so as to adapt to the connection of various machine tool spindles and the invention.
In the preferred embodiment, the torque is transmitted between the tool holder body and the floating tool rod by means of the meshing teeth, and other transmission structures can be adopted in other embodiments.
The lower part of the floating cutter bar 3 penetrates through the vibration frequency ring 12, the vibration amplitude disc 13 and the lower shell 5 and then extends to the outer part of the upper shell 2 and the lower shell 5 which are connected in a pressing way to form a sealing structure, and the end part of the floating cutter bar 3 extending out of the closed shell is provided with a spring clamp 9 for clamping a cutter.
When the tool clamp works, the tool clamp body 1 rotates along with the main shaft of the bed to drive the floating tool bar 3 to rotate, and the steel balls 7 on the non-rotating vibration frequency ring 12 and the cam 6 on the rotating floating tool bar 3 are in intermittent contact to generate an intermittent separation effect, so that the floating tool bar 3 generates axial micro-vibration, and the purpose of breaking chips is achieved.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. An automatic chip breaking chuck for drilling comprises a shell and a chip breaking rotating body positioned in the shell, wherein the chip breaking rotating body rotates in the shell; the method is characterized in that:
the chip breaking swivel body comprises a cutter clamp body (1), a floating cutter bar (3), steel balls (7) and a tail handle (10); one end part of the knife clamp body (1) is arranged in the shell, and the other end of the knife clamp body is exposed out of the upper end of the shell and is connected with the tail handle (10); one end part of the floating cutter bar (3) is arranged in the sealing structure and synchronously rotates after being connected with the cutter holder body (1), a cam (6) is arranged on the floating cutter bar, a compression spring (11) is arranged in the floating cutter bar, and the compression spring (11) is compressed by the cutter holder body (1) and the floating cutter bar (3);
the vibration amplitude disc is characterized by further comprising a vibration frequency ring (12) and a vibration amplitude disc (13) which are arranged in the shell, steps are arranged on the vibration amplitude disc (13), the vibration frequency ring (12) is arranged on the steps of the vibration amplitude disc (13), a plurality of steel ball mounting holes are formed in the vibration frequency ring (12), and steel balls (7) are arranged in the steel ball mounting holes;
in the rotation process of the floating cutter bar (3) along with the main shaft of the machine, the cam (6) is intermittently contacted with the steel ball (7), and the floating cutter bar (3) generates micro-vibration motion of the upper ground and the lower ground under the action of the compression spring (11).
2. The automatic chip breaker chuck for drilling according to claim 1, wherein:
the shell comprises an upper shell (2) and a lower shell (5), and the upper shell (2) and the lower shell (5) are connected in a pressing mode.
3. The automatic chip breaker chuck for drilling according to claim 1, wherein:
the floating cutter bar (3) is provided with a convex shoulder, the convex shoulder is provided with meshing teeth (4), and the floating cutter bar (3) is meshed and linked with the cutter clamp body (1) through the meshing teeth (4).
4. A drill auto-chip breaker chuck according to claim 3 in which:
the inner hole of the floating cutter bar (3) is also matched with a pressure regulating screw (8).
5. The automatic chip breaker chuck for drilling according to claim 4, wherein:
the amplitude disc (13) with steps is rotated, the center height of the steel balls (7) can be changed, and the effect of changing the amplitude of the floating cutter bar (3) is achieved;
the vibration frequency of the floating cutter bar (3) can be changed by changing the number of the steel balls (7);
the vibration cutting resistance of the floating cutter bar (3) can be changed by adjusting the matching height of the pressure regulating screw (8) and the floating cutter bar (3).
6. The automatic chip breaker chuck for drilling according to claim 5, wherein:
the tail handle (10) on the knife clamp body (1) adopts a muff coupling connection.
7. The automatic chip breaker chuck for drilling according to claim 5, wherein:
the lower part of the floating cutter bar (3) is inserted through a vibration frequency ring (12), a vibration amplitude disc (13) and the lower shell (5) and then connected with a spring clamp (9) for clamping a cutter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110539245.1A CN113118518A (en) | 2021-05-18 | 2021-05-18 | Automatic chip breaking chuck for drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110539245.1A CN113118518A (en) | 2021-05-18 | 2021-05-18 | Automatic chip breaking chuck for drilling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113118518A true CN113118518A (en) | 2021-07-16 |
Family
ID=76782698
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110539245.1A Pending CN113118518A (en) | 2021-05-18 | 2021-05-18 | Automatic chip breaking chuck for drilling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113118518A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113770426A (en) * | 2021-09-09 | 2021-12-10 | 盐城工学院 | Self-excited vibration drilling cutter handle device |
| DE102023207042A1 (en) | 2022-07-25 | 2024-01-25 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung eingetragener Verein | Tool chuck for a rotating tool |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60180704A (en) * | 1984-02-27 | 1985-09-14 | Yunipooto Trading Kk | Chip breaker holder |
| SU1247170A1 (en) * | 1984-11-05 | 1986-07-30 | Ленинградский Ордена Ленина Политехнический Институт Им.М.И.Калинина | Arrangement for breaking chips |
| US4770569A (en) * | 1986-09-09 | 1988-09-13 | Nitto Kokhi Co., Ltd. | Boring device |
| CN102847976A (en) * | 2012-08-28 | 2013-01-02 | 方荣泉 | Magnetic hollow-core drill capable of drilling quickly and cutting automatically |
| CN205798540U (en) * | 2016-07-18 | 2016-12-14 | 向宝土贡 | Mechanical-vibration type aperture knife tool miniature chip breaking chuck |
| CN107866585A (en) * | 2016-09-26 | 2018-04-03 | 向宝土贡 | The miniature type of chip breaking chuck II of mechanical-vibration type aperture knife tool |
| CN209565518U (en) * | 2019-02-01 | 2019-11-01 | 上海浦东新区张江化纤机械配件有限公司 | A kind of floating punch drill |
| CN112247196A (en) * | 2020-10-10 | 2021-01-22 | 河北工业大学 | Axial vibration processing device based on elastic support |
| CN216028287U (en) * | 2021-05-18 | 2022-03-15 | 南昌耐锐康精密机械有限公司 | Automatic chip breaking chuck for drilling |
-
2021
- 2021-05-18 CN CN202110539245.1A patent/CN113118518A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60180704A (en) * | 1984-02-27 | 1985-09-14 | Yunipooto Trading Kk | Chip breaker holder |
| SU1247170A1 (en) * | 1984-11-05 | 1986-07-30 | Ленинградский Ордена Ленина Политехнический Институт Им.М.И.Калинина | Arrangement for breaking chips |
| US4770569A (en) * | 1986-09-09 | 1988-09-13 | Nitto Kokhi Co., Ltd. | Boring device |
| CN102847976A (en) * | 2012-08-28 | 2013-01-02 | 方荣泉 | Magnetic hollow-core drill capable of drilling quickly and cutting automatically |
| CN205798540U (en) * | 2016-07-18 | 2016-12-14 | 向宝土贡 | Mechanical-vibration type aperture knife tool miniature chip breaking chuck |
| CN107866585A (en) * | 2016-09-26 | 2018-04-03 | 向宝土贡 | The miniature type of chip breaking chuck II of mechanical-vibration type aperture knife tool |
| CN209565518U (en) * | 2019-02-01 | 2019-11-01 | 上海浦东新区张江化纤机械配件有限公司 | A kind of floating punch drill |
| CN112247196A (en) * | 2020-10-10 | 2021-01-22 | 河北工业大学 | Axial vibration processing device based on elastic support |
| CN216028287U (en) * | 2021-05-18 | 2022-03-15 | 南昌耐锐康精密机械有限公司 | Automatic chip breaking chuck for drilling |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113770426A (en) * | 2021-09-09 | 2021-12-10 | 盐城工学院 | Self-excited vibration drilling cutter handle device |
| CN113770426B (en) * | 2021-09-09 | 2023-12-15 | 盐城工学院 | Self-excitation vibration drilling tool handle device |
| DE102023207042A1 (en) | 2022-07-25 | 2024-01-25 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung eingetragener Verein | Tool chuck for a rotating tool |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113118518A (en) | Automatic chip breaking chuck for drilling | |
| US5342152A (en) | Method and apparatus for forming intermittent chips while machining holes with a rotating tool | |
| CA1172885A (en) | Milling tool for forming recesses in masonry, concrete and similar material structures | |
| CN216028287U (en) | Automatic chip breaking chuck for drilling | |
| US20010015115A1 (en) | Special gear unit | |
| US4798024A (en) | Method and apparatus for deburring the inner edge of part of a workpiece | |
| DE102011122040A1 (en) | Device i.e. chuck, for use in processing machine to retain cutting tool utilized for cutting e.g. injection-molded workpiece, has energy storage unit arranged between bolt and spindle end, where rotational motion is feedable on spindle | |
| CA2574522A1 (en) | Method and device for machining rotationally symmetrical surfaces of a workpiece | |
| US4625707A (en) | Core drill apparatus | |
| WO1997049521A3 (en) | Method and device for producing workpieces with a non-circular internal and/or external shape | |
| US2581258A (en) | Driller | |
| US4165200A (en) | Drilling and deburring apparatus | |
| JP7029614B2 (en) | Tapping shank that ensures the safety and durability of screw taps | |
| JPH0354811Y2 (en) | ||
| US2645952A (en) | Deep drilling attachment | |
| KR200428626Y1 (en) | changeable guide element and hand bevelling machine having the same | |
| JPH01109007A (en) | Vibration-cut drilling machine for precise boring of ceramics | |
| US4574528A (en) | Apparatus for grinding twist drills | |
| WO2021106238A1 (en) | Power transmission device | |
| CN113857996B (en) | Lathe cutter grinding device | |
| SU1708539A1 (en) | Carrier center | |
| CN220838094U (en) | Twist drill with extension bar | |
| JP2000042857A (en) | Holding tool | |
| JP3180173B2 (en) | Holding tool | |
| CN104801728A (en) | Self-guiding floating-type twisting vibration tapping main shaft |
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 |