CN109304490A - A kind of deep-hole boring head component - Google Patents

A kind of deep-hole boring head component Download PDF

Info

Publication number
CN109304490A
CN109304490A CN201811336370.7A CN201811336370A CN109304490A CN 109304490 A CN109304490 A CN 109304490A CN 201811336370 A CN201811336370 A CN 201811336370A CN 109304490 A CN109304490 A CN 109304490A
Authority
CN
China
Prior art keywords
boring head
deep
spline
nonmetallic
hole
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
Application number
CN201811336370.7A
Other languages
Chinese (zh)
Inventor
王亚伦
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN201811336370.7A priority Critical patent/CN109304490A/en
Publication of CN109304490A publication Critical patent/CN109304490A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23BTURNING; BORING
    • B23B29/00Holders for non-rotary cutting tools; Boring bars or boring heads; Accessories for tool holders
    • B23B29/03Boring heads

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Drilling And Boring (AREA)

Abstract

The present invention provides a kind of deep-hole boring head components, including boring head, guide sleeve and the cutter being mounted on boring head, boring head outer wall and guide sleeve inner wall directly constitute transition fit, boring head outer wall is as boring head and guide sleeve cooperation, the stress surface in use process, and the nonmetallic spline of embeddable different-thickness is between boring head and guide sleeve to adapt to the deep hole machining of different pore size.Deep hole machining is carried out using deep-hole boring head component of the present invention, when larger change occurs for the deep hole size (internal diameter) processed, both without changing or being replaced with the boring head to match with deep hole size (internal diameter), without re-working or replace guide sleeve, it is only necessary to replace the nonmetallic spline of suitable thickness.

Description

A kind of deep-hole boring head component
Technical field
The present invention relates to deep hole tools, and in particular to a kind of deep-hole boring head component.
Background technique
Deep-hole boring head component belongs to deep hole tools, is mainly used for deep hole machining, before having as disclosed in CN204182947U The deep hole machining boring head of guide sleeve, preceding guide sleeve front end are equipped with lightening hole, have 3 wood key slots in outer circle, before being bumped into wood key slot It is oriented to wood key, there is rectangular boss in rear end, and deep-hole boring head front end has open slot, and it is leading to be packed into open slot to set, in bolt hole Connection bolt clamp leading to set, have 3 wood key slots on deep-hole boring head, wood key be oriented to after being bumped into wood key slot, it is leading to wood Key, rear guiding wood key are harder pear wood or Manchurian ash wood of material etc..As previously mentioned, deep-hole boring head component includes boring head, guiding The cutter for covering and being mounted on boring head, boring head and guide sleeve pass through the nonmetallic spline fitted that boring head outer wall is arranged in, nonmetallic Spline is as the stress point in boring head and guide sleeve engagement process.However, existing deep-hole boring head component processing variable is small, processing Variable can only control in 5mm, as specification be 150mm boring head and guide sleeve can only process the deep hole that diameter is 150-155mm; And works as processed deep hole size (outer diameter) and change, especially when deep hole size (outer diameter) variable processed is greater than 5mm When, it must just change or be replaced with the boring head and guide sleeve that match with deep hole size (outer diameter).
Summary of the invention
The problem of for background technique, the purpose of the present invention is to provide a kind of deep-hole boring head components.
To achieve the goals above, the present invention adopts the following technical scheme that.
A kind of deep-hole boring head component, including boring head, guide sleeve and the cutter being mounted on boring head, boring head outer wall and guide sleeve Inner wall directly constitutes transition fit, boring head outer wall as the stress surface in boring head and guide sleeve cooperation, use process, boring head with The nonmetallic spline of embeddable different-thickness is between guide sleeve to adapt to the deep hole machining of different pore size.
Further, boring head outer wall is provided with keyway, be arranged along guide sleeve axial direction inner wall it is fluted, in keyway and The nonmetallic spline of embeddable different-thickness in groove, and nonmetallic spline a portion is adherent is matched in keyway, non-gold The side of category spline rest part is adherent to be matched in groove.
Preferably, two sides of nonmetallic spline are parallel to each other, the two side walls of groove are parallel to each other.
Preferably, the keyway and groove of nonmetallic spline and its cooperation are axially arranged, i.e., keyway is along boring head outer wall Axial setting, groove are axially arranged along guide sleeve inner wall, and nonmetallic spline is also axially arranged.
Preferably, distance of the groove floor away from guide sleeve inner wall is 1-50mm, made using such structure using one Covering deep-hole boring head component to be suitable for diameter variable is the deep hole machining within 100mm.
More preferably, distance of the groove floor away from guide sleeve inner wall is 5-15mm, to use using such structure It is the deep hole machining within 30mm that a set of deep-hole boring head component, which can be suitable for diameter variable,.
Preferably, the keyway and groove of nonmetallic spline and its cooperation are at least three groups;More preferably three to eight groups.
Further, adjacent nonmetallic spline and its keyway and groove of cooperation mutually stagger and/or arranged in parallel.
Further, cutter radial is set to boring head front end face.It can be carried out using regular turning tool using such structure Deep hole machining, without being axially mounted at the outer wall of boring head front using the special tool of customization.
Preferably, cutter can use hilted broadsword or double-pole.
Further, it has been arranged radially floating bore hole on boring head, has been equipped in floating bore hole in cutter.Using in this way Structure can be realized right boring processing.
The invention has the following beneficial effects: 1. deep-hole boring head component processing variables of the present invention are big, processing variable be can control Within 100mm, as specification be 150mm boring head and guide sleeve can process the deep hole that diameter is 150-250mm, significantly larger than Processing variable within existing 5mm;2. deep hole machining is carried out using deep-hole boring head component of the present invention, when the deep hole size processed When larger change occurs for (internal diameter), both without changing or being replaced with the boring head to match with deep hole size (internal diameter), without weight New processing or replacement guide sleeve, it is only necessary to replace the nonmetallic spline of suitable thickness, and without dimension precision requirement;3. of the invention deep Hole boring head assembly can using regular turning tool as process tool, without customization special tool be axially mounted to boring head before At portion's outer wall;4. using deep-hole boring head component of the present invention carry out deep hole machining, when processed deep hole size (internal diameter) generation compared with When big change, can not only substantially it shorten deep hole machining non-cutting time (time of adjustment deep hole component), and can substantially drop Low processing cost is used for processing specification as six deep holes of 150mm, 155mm, 160mm, 165mm, 170mm, 175mm Existing deep-hole boring head component processing needs to install a boring head and guide sleeve, replaces five boring heads, guide sleeve and nonmetallic flower Key adjusts No. five cutters, only needs to install a boring head and guide sleeve using deep-hole boring head component of the present invention processing, replaces five times Nonmetallic spline adjusts No. five cutters, and the time of replacement boring head and guide sleeve, and guide sleeve of every replacement and boring head is omitted Need to spend wantonly more than thousand yuan, it is seen then that use deep-hole boring head component of the present invention six specifications of processing for the deep hole of 150mm-180mm extremely It is cost-saved 20,000 yuan few, deep hole machining economic benefit greatly improved.
Detailed description of the invention
Fig. 1 is 1 medium-length hole boring head assembly structural schematic diagram of embodiment, and what is be embedded between boring head and guide sleeve in figure is to be altogether unjustifiable Metal spline;
Fig. 2 is the structural schematic diagram of boring head in Fig. 1;
Fig. 3 is the structural schematic diagram of guide sleeve in Fig. 1;
Fig. 4 is 1 medium-length hole boring head assembly structural schematic diagram of embodiment, and what is be embedded between boring head and guide sleeve in figure is thin nonmetallic Spline;
Fig. 5 is the boring head structural schematic diagram of 2 medium-length hole boring head assembly of embodiment;
Fig. 6 is boring head front end in Fig. 5 (Cutting tool installation manner end) schematic diagram;
Fig. 7 is the guide sleeve structure schematic diagram of Fig. 5 medium-length hole boring head assembly;
Fig. 8 is the boring head structural schematic diagram of 10 medium-length hole boring head assembly of embodiment.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings and specific examples, but the explanation of following embodiment is only used The principle of the present invention and its core concept are understood in help, not limiting the scope of the present invention.It should be pointed out that for this For the those of ordinary skill of technical field, without departing from the principle of the present invention, the improvement carried out for the present invention It falls into the protection scope of the claims in the present invention.
Embodiment 1
A kind of deep-hole boring head component, as shown in Figures 1 to 4.
The deep-hole boring head component includes boring head 1, guide sleeve 2 and the cutter being mounted on boring head 1,1 outer wall of boring head and guiding It covers 2 inner walls and directly constitutes transition fit, (present invention is described herein to be made 1 outer wall of boring head with the cooperation of guide sleeve 2, use as boring head 1 With referring to deep hole machining) during stress surface, the nonmetallic spline 3 of embeddable different-thickness between boring head 1 and guide sleeve 2 To adapt to the deep hole machining of different pore size.Wherein, between boring head 1 and guide sleeve 2 embedding thicker nonmetallic spline 3 as shown in Figure 1, Embedding relatively thin nonmetallic spline 3 is as shown in Figure 4 between boring head 1 and guide sleeve 2.
Wherein, 1 outer wall of boring head is provided with keyway 4, along 2 inner wall of guide sleeve setting fluted 5, in keyway 4 and recessed The nonmetallic spline 3 of embeddable different-thickness in slot 5, and 3 a portion of nonmetallic spline is adherent is matched in keyway 4, it is non- The side of 3 rest part of metal spline is adherent to be matched in groove 5.
Wherein, two sides of nonmetallic spline 3 are parallel to each other, and the two side walls of groove 5 are parallel to each other.
Wherein, the axial setting of the keyway 4 and groove 5 of nonmetallic spline 3 and its cooperation, nonmetallic spline 3 pass through countersunk head Bolt is installed in keyway 4.
Wherein, distance of 5 bottom surface of groove away from 2 inner wall of guide sleeve is 15mm, can use a set of depth using such structure It is the deep hole machining within 30mm that hole boring head assembly, which can be suitable for diameter variable,.
Wherein, the keyway 4 and groove 5 of nonmetallic spline 3 and its cooperation are four groups.
Wherein, the keyway 4 and groove 5 of adjacent nonmetallic spline 3 and its cooperation are arranged in parallel.
Wherein, cutter radial is set to 1 front end face of boring head, and mounting portion 7 is axially set in 1 rear end face of boring head.
Wherein, cutter uses hilted broadsword or double-pole, and cutter is installed in cutter groove 6 by dormant bolt.
Wherein, nonmetallic spline 3 is using wear-resisting and hardness requirement nonmetallic materials are met, such as pear wood, Manchurian ash wood, phenol Aldehyde fabric swatch or plastics (such as polyether-ether-ketone).
Wherein, in 1 outer wall of boring head, also axially there are two oil grooves 8 for setting, for being cooled down and being lubricated to cutter.Such as Fig. 2 Shown, two oil grooves 8 are located at nonmetallic 3 side of spline of two of them.
Wherein, 1 outer diameter of boring head is 150mm, and 2 internal diameter of guide sleeve is 150mm, and nonmetallic 3 thickness of spline can be in (15mm+ 4 depth of keyway) within select, including but not limited to 4 depth of 2mm+ keyway, 4 depth of 5mm+ keyway, 4 depth of 10mm+ keyway, 4 depth of 13mm+ keyway.
Embodiment 2
A kind of deep-hole boring head component, as shown in Fig. 5, Fig. 6 and Fig. 7.
The deep-hole boring head component includes boring head 1, guide sleeve 2 and the cutter being mounted on boring head 1,1 outer wall of boring head and guiding Cover 2 inner walls and directly constitute transition fit, 1 outer wall of boring head as the stress surface in boring head 1 and the cooperation of guide sleeve 2, use process, The nonmetallic spline 3 of embeddable different-thickness is between boring head 1 and guide sleeve 2 to adapt to the deep hole machining of different pore size.
Wherein, 1 outer wall of boring head is provided with keyway 4, along 2 inner wall of guide sleeve setting fluted 5, in keyway 4 and recessed The nonmetallic spline 3 of embeddable different-thickness in slot 5, and 3 a portion of nonmetallic spline is adherent is matched in keyway 4, it is non- The side of 3 rest part of metal spline is adherent to be matched in groove 5.
Wherein, two sides of nonmetallic spline 3 are parallel to each other, and the two side walls of groove 5 are parallel to each other.
Wherein, the axial setting of the keyway 4 and groove 5 of nonmetallic spline 3 and its cooperation, nonmetallic spline 3 pass through countersunk head Bolt is installed in keyway 4.
Wherein, distance of 5 bottom surface of groove away from 2 inner wall of guide sleeve is 50mm, can use a set of depth using such structure It is the deep hole machining within 100mm that hole boring head assembly, which can be suitable for diameter variable,.
Wherein, the keyway 4 and groove 5 of nonmetallic spline 3 and its cooperation are eight groups.
Wherein, the keyway 4 and groove 5 of adjacent nonmetallic spline 3 and its cooperation are parallel to each other and mutually stagger setting.
Wherein, cutter radial is set to 1 front end face of boring head, and mounting portion 7 is axially set in 1 rear end face of boring head.
Wherein, cutter uses hilted broadsword or double-pole, and cutter is installed in cutter groove 6 as shown in FIG. 6 by dormant bolt.
Wherein, nonmetallic spline 3 is using wear-resisting and hardness requirement material is met, such as pear wood, Manchurian ash wood, phenol aldehyde laminated cloth board Or plastics (such as polyether-ether-ketone).
Wherein, in 1 outer wall of boring head, also axially there are two oil grooves 8 for setting, for being cooled down and being lubricated to cutter, such as Fig. 5 Shown, two oil grooves 8 are located at nonmetallic 3 side of spline of two of them.
Wherein, nonmetallic 3 thickness of spline can select within (4 depth of 50mm+ keyway), including but not limited to 5mm+ 4 depth of keyway, 4 depth of 10mm+ keyway, 4 depth of 15mm+ keyway, 4 depth of 20mm+ keyway, 4 depth of 25mm+ keyway.
Embodiment 3
A kind of deep-hole boring head component, referring to embodiment 1.Wherein, distance of 5 bottom surface of groove away from 2 inner wall of guide sleeve is 5mm, non-gold The keyway 4 and groove 5 for belonging to spline 3 and its cooperation are three groups.
Embodiment 4
A kind of deep-hole boring head component, referring to embodiment 2.Wherein, distance of 5 bottom surface of groove away from 2 inner wall of guide sleeve is 25mm, non-gold The keyway 4 and groove 5 for belonging to spline 3 and its cooperation are ten groups.
Embodiment 5
A kind of deep-hole boring head component, referring to embodiment 2.Wherein, distance of 5 bottom surface of groove away from 2 inner wall of guide sleeve is 1mm, non-gold The keyway 4 and groove 5 for belonging to spline 3 and its cooperation are six groups.
Embodiment 6
A kind of deep-hole boring head component, referring to embodiment 1.Wherein, cutter uses hilted broadsword, and hilted broadsword is installed on cutter groove by dormant bolt In 6.
Embodiment 7
A kind of deep-hole boring head component, referring to embodiment 2.Wherein, cutter double-pole, double-pole are installed in cutter groove 6 by dormant bolt.
Embodiment 8-9
A kind of deep-hole boring head component, respectively refers to embodiment 1 and embodiment 2.Wherein, floating boring has been arranged radially on boring head 1 Hole 9, is equipped in floating bore hole 9 in cutter 10, can be realized right boring processing using such structure.
Embodiment 10-11
A kind of deep-hole boring head component, respectively refers to embodiment 1 and embodiment 2.Wherein, as shown in figure 8, radially being set on boring head 1 It is equipped with floating bore hole 9, is equipped in floating bore hole 9 in cutter 10, right boring processing can be realized using such structure.
Application method: nonmetallic spline is installed in keyway, and by guide sleeve engagement sleeves loaded on boring head, cutter is fixed In in the guide groove of boring head front end, completing the assembling of deep-hole boring head component, deep-hole boring head component is fixed on boring machine, boring machine after installation Cover board completes the installation of deep-hole boring head component, can carry out deep hole machining, when needing to process the deep hole of different-diameter, it is only necessary to Replace the nonmetallic spline of suitable thickness.Due to nonmetallic spline thickness can within the scope of depth of groove it is adjustable, it is nonmetallic Spline gauge variation is therefore deep hole diameter variable to be processed can be used in the deep hole machining of different-diameter.
Deep-hole boring head component of the present invention has the following beneficial effects: that 1. deep-hole boring head component processing variables of the present invention are big, with For 2 medium-length hole boring head assembly of embodiment, processing variable be can control within 100mm, as specification for the boring head of 150mm and is led The deep hole that diameter is 150-250mm, processing variable within significantly larger than existing 5mm can be processed to set;2. using the present invention Deep-hole boring head component carries out deep hole machining, when larger change occurs for the deep hole size (internal diameter) processed, both without changing or It is replaced with the boring head to match with deep hole size (internal diameter), without re-working or replace guide sleeve, it is only necessary to which replacement is suitable The nonmetallic spline of thickness, and without dimension precision requirement;Add 3. deep-hole boring head component of the present invention can be used as using regular turning tool Work cutter is axially mounted at the outer wall of boring head front without the special tool of customization;4. using deep-hole boring head group of the present invention Part carries out deep hole machining, when larger change occurs for the deep hole size (internal diameter) processed, can not only substantially shorten deep hole and add Work non-cutting time (time of adjustment deep hole component), and processing cost can be greatly reduced, with 1 medium-length hole boring head group of embodiment For part, for processing six deep holes that specification is 150mm, 155mm, 160mm, 165mm, 170mm, 175mm, use is existing The processing of deep-hole boring head component needs to install a boring head and guide sleeve, replaces five boring heads, guide sleeve and nonmetallic spline, adjusts No. five cutters only need to install a boring head and guide sleeve using deep-hole boring head component of the present invention processing, and replacement five times nonmetallic Spline adjusts No. five cutters, and the time of replacement boring head and guide sleeve is omitted, and guide sleeve of every replacement and boring head need to spend Take wantonly more than thousand yuan, it is seen then that using deep-hole boring head component of the present invention to process six specifications can at least save for the deep hole of 150mm-175mm About 20,000 yuan of cost, greatly improved deep hole machining economic benefit.

Claims (10)

1. a kind of deep-hole boring head component exists including boring head (1), guide sleeve (2) and the cutter being mounted on boring head (1), feature In: boring head (1) outer wall and guide sleeve (2) inner wall directly constitute transition fit, and boring head (1) outer wall is as boring head (1) and guide sleeve (2) cooperate, the stress surface in use process, the nonmetallic spline of embeddable different-thickness between boring head (1) and guide sleeve (2) (3) to adapt to the deep hole machining of different pore size.
2. deep-hole boring head component according to claim 1, it is characterised in that: the boring head (1) outer wall is provided with key Fluted (5) are arranged along the guide sleeve (2) inner wall, the embeddable different-thickness in keyway (4) and groove (5) in slot (4) The nonmetallic spline (3), and the adherent keyway (4) that is matched with of the nonmetallic spline (3) a portion is interior, it is described nonmetallic The side of spline (3) rest part is adherent to be matched in groove (5).
3. deep-hole boring head component according to claim 2, it is characterised in that: two sides of the nonmetallic spline (3) It is parallel to each other, the two side walls of the groove (5) are parallel to each other.
4. deep-hole boring head component according to claim 3, it is characterised in that: the nonmetallic spline (3) and its cooperation The keyway (4) and the axial setting of the groove (5).
5. according to deep-hole boring head component described in claim 2,3 or 4, it is characterised in that: led away from described groove (5) bottom surface It is 1-50mm to the distance of set (2) inner wall.
6. deep-hole boring head component according to claim 4, it is characterised in that: groove (5) bottom surface is away from the guide sleeve (2) distance of inner wall is 5-15mm.
7. deep-hole boring head component according to claim 5, it is characterised in that: the nonmetallic spline (3) and its cooperation The keyway (4) and the groove (5) are at least three groups.
8. deep-hole boring head component according to claim 7, it is characterised in that: the adjacent nonmetallic spline (3) and its match The keyway (4) and the groove (5) closed mutually staggers and/or arranged in parallel.
9. deep-hole boring head component according to claim 8, it is characterised in that: before cutter radial is set to the boring head (1) End face.
10. deep-hole boring head component according to claim 9, it is characterised in that: cutter uses hilted broadsword or double-pole.
CN201811336370.7A 2018-11-10 2018-11-10 A kind of deep-hole boring head component Pending CN109304490A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811336370.7A CN109304490A (en) 2018-11-10 2018-11-10 A kind of deep-hole boring head component

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811336370.7A CN109304490A (en) 2018-11-10 2018-11-10 A kind of deep-hole boring head component

Publications (1)

Publication Number Publication Date
CN109304490A true CN109304490A (en) 2019-02-05

Family

ID=65222588

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201811336370.7A Pending CN109304490A (en) 2018-11-10 2018-11-10 A kind of deep-hole boring head component

Country Status (1)

Country Link
CN (1) CN109304490A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4708543A (en) * 1985-04-05 1987-11-24 Gte Valeron Corporation Coarse radial adjustment boring quill
CN204182947U (en) * 2014-10-16 2015-03-04 武汉重工铸锻有限责任公司 With the deep hole machining boring head of front fairlead
CN209532145U (en) * 2018-11-10 2019-10-25 王亚伦 A kind of deep-hole boring head component

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4708543A (en) * 1985-04-05 1987-11-24 Gte Valeron Corporation Coarse radial adjustment boring quill
CN204182947U (en) * 2014-10-16 2015-03-04 武汉重工铸锻有限责任公司 With the deep hole machining boring head of front fairlead
CN209532145U (en) * 2018-11-10 2019-10-25 王亚伦 A kind of deep-hole boring head component

Similar Documents

Publication Publication Date Title
CN103252521B (en) A kind of cutter and processing method thereof of processing isometrical Large space coaxial aperture system
WO2008141606A3 (en) Rotatably drivable cutting tool
WO2008141605A3 (en) Cutting tool
CN204486802U (en) A kind of air floated high speed electric mandrel
CN209532145U (en) A kind of deep-hole boring head component
CN203448694U (en) Combined countersinking cutter
CN203817463U (en) Cutter for fraising and countering step hole
CN106001650A (en) Large-length-diameter-ratio guiding sectional boring rod
CN109304490A (en) A kind of deep-hole boring head component
CN206316404U (en) A kind of ultra-deep blind hole processing tool
CN204413230U (en) Deep hole drill drill bushing
US7883302B2 (en) Machine tool
CN208341910U (en) It is a kind of to exempt from tool changing combination cutter for hole in piece part rapid processing
KR20070061520A (en) Mandrel for a milling cutter holder
CN103817366A (en) Combined chambering cutter
CN209006744U (en) Hole-machining drilling boring compound tool in a kind of hot stamping die
CN103447558A (en) Floating boring tool for machining of blind-hole thin-walled deep-hole parts
CN204603417U (en) A kind of dual output milling head
CN104493247B (en) Drill gun on duplex drill guides and slug collection device
CN202097428U (en) Orifice chamfer boring tool device for drilling machine
CN203304641U (en) Tool for machining equal-diameter large-distance coaxial holes
CN204686058U (en) A kind of multiplex vibration damping knife bar
CN104259526A (en) jig bushing
CN205021155U (en) First frock of oil groove chamfer cutting is cut in combination of hydraulic drive lathe
CN103949674A (en) Drilling machine with main spindle nose provided with self-adjusting cooling system and connecting head

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