CN110238449A - A kind of highly reliable multi-angle cutting band sawing machine - Google Patents
A kind of highly reliable multi-angle cutting band sawing machine Download PDFInfo
- Publication number
- CN110238449A CN110238449A CN201910602075.XA CN201910602075A CN110238449A CN 110238449 A CN110238449 A CN 110238449A CN 201910602075 A CN201910602075 A CN 201910602075A CN 110238449 A CN110238449 A CN 110238449A
- Authority
- CN
- China
- Prior art keywords
- lathe bed
- column
- feeding portion
- saw
- sawing machine
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D55/00—Sawing machines or sawing devices working with strap saw blades, characterised only by constructional features of particular parts
- B23D55/04—Sawing machines or sawing devices working with strap saw blades, characterised only by constructional features of particular parts of devices for feeding or clamping work
- B23D55/043—Sawing machines or sawing devices working with strap saw blades, characterised only by constructional features of particular parts of devices for feeding or clamping work for conveying work to the sawing machine
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
- B23Q3/08—Work-clamping means other than mechanically-actuated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
- B23Q5/22—Feeding members carrying tools or work
- B23Q5/28—Electric drives
Abstract
The present invention relates to band sawing machine technical fields, disclose a kind of highly reliable multi-angle cutting band sawing machine, including lathe bed, it is installed on two root posts on lathe bed and can be along the saw frame of the column up-down, it is installed with saw band on saw frame and is able to drive the Power Component that saw band is cut, feeding material component is provided on lathe bed, feeding material component includes the feeding portion being slidably arranged on lathe bed, it is rotatably arranged on clamp assemblies for clamping workpiece of institute's feeding portion far from lathe bed side, the glide direction of feeding portion and the cut direction of saw band are vertical, saw frame drives saw to before column decline cutting, feeding portion send clamp assemblies to saw band, it is rotated further by clamp assemblies, adjust the cutting position and angle of workpiece, without installing fixation again after removing workpiece, it is convenient to use, be conducive to promote working efficiency.
Description
Technical field
The present invention relates to band sawing machine technical fields, more specifically, it relates to which a kind of highly reliable multi-angle cuts band sawing machine.
Background technique
Column, saw frame, the feeding table that conventional belt sawing machine generally includes lathe bed, is mounted on lathe bed are installed with saw on saw frame
Band and the saw band motor for being able to drive saw band work, saw frame can be protected under the guiding role of saw frame along column oscilaltion, saw band
Card cut direction does not shift.
In practical cutting process, workpiece is usually clamped by work piece holder and is located on the workbench below saw frame, saw frame
Decline does cutting off processing to workpiece, and saw frame, which is moved back and forth, carries out sawing to workpiece.In specific production process, generally use
Linear single-station is operated, that is, after the completion of needing to wait the workpiece that is being cut, then carries out next to cut workpiece
Feeding.It is mostly also that manually workpiece is placed on band sawing machine to carry out sanction saw when Die Casting Industry removes workpiece cast gate.
However, there are security risk, in this way when carrying out large-scale cutting production, due to have between cutting and feeding compared with
Long interval of time, therefore in continuous production, it will cause the low of cutting efficiency, labor intensity is big, is unfavorable for pacifying
Complete effective production.
Summary of the invention
In view of the above-mentioned problems, the purpose of the present invention is to provide a kind of highly reliable multi-angles to cut band sawing machine, having can
Multi-angle cutting, and the advantage for facilitating piece-holder fixed.
Foregoing invention purpose of the invention has the technical scheme that
A kind of highly reliable multi-angle cuts band sawing machine, including lathe bed, two root posts being installed on the lathe bed and can be along this
The saw frame of column up-down is installed with saw band on the saw frame and is able to drive the Power Component that the saw band is cut, institute
It states and is provided with feeding material component on lathe bed;
The feeding material component includes the feeding portion being slidably arranged on the lathe bed, is rotatably arranged on institute's feeding portion far from the bed
The clamp assemblies for clamping workpiece of body side;
The glide direction of the feeding portion is vertical with the cut direction of the saw band.
Through the above technical solutions, saw frame drive saw to along column decline cutting before, feeding portion by clamp assemblies send to
Immediately below saw band, clamp assemblies are rotated further by, the cutting position and angle of workpiece are adjusted, it is solid without being installed again after removing workpiece
It is fixed, it is easy to use, is conducive to promote working efficiency.
The present invention is further arranged to: the feeding material component includes the feeding motor being fixedly connected on the lathe bed, consolidates
The ball screw for guide rail and with feeding motor transmission connection being scheduled on the lathe bed, the nut of the ball screw
It is fixedly connected with the feeding portion.
Through the above technical solutions, driving ball screw rotation by feeding motor, it is changed to by ball screw rotary motion
Linear motion, so as to easily realize the sliding motion of feeding portion.
The present invention is further arranged to: rotating electric machine, the output of the rotating electric machine are fixedly installed in the feeding portion
Axis is fixedly connected with swivel plate, and the clamp assemblies and the swivel plate are sequentially connected.
Through the above technical solutions, swivel plate rotation can be driven by rotating electric machine, so that clamp assemblies is driven workpiece while turning
It is dynamic, realize the change of workpiece angle and position.
The present invention is further arranged to: at least three tilt components are arranged far from the side of the lathe bed in the swivel plate,
The cam that the tilt component includes servo motor, is connect with the servo motor transmission;
The clamp assemblies include being fixedly connected on the feeding portion to prop up column and hang plate far from the lathe bed one side, described
It props up column and is fixedly connected with oblique ball far from one end of the feeding portion, the hang plate opens up on one side close to the feeding portion
Have and the matched tipper of the oblique ball;
One side of the cam with the hang plate close to the feeding portion abuts.
Through the above technical solutions, the tipper on hang plate is matched with oblique ball, so that hang plate can exist around oblique ball
Inclination is generated on certain angle, cam is abutted with hang plate, and servo motor drives cam to rotate the inclination angle that can control hang plate
Degree, facilitates the adjusting of the location of workpiece.
The present invention is further arranged to: the clamp assemblies include the multiple rotary pneumatics being fixedly connected on the hang plate
Cylinder and the first fixture being sequentially connected respectively with the rotary cylinder, opposite first fixture are driven by the rotary cylinder
It is pushed against with the workpiece.
Through the above technical solutions, piece-holder is convenient, quickly and stablize.
The present invention is further arranged to: the clamp assemblies include the multiple clamp columns being fixedly connected on the hang plate
And clamping element of the clamp column far from the lathe bed side is set;
The clamping element includes clamping cylinder, being threaded in the transformation column for clamping cylinder one end, be slidably arranged in the clamping
The press post of the cylinder other end and the elastic component being arranged between the transformation column and the press post;
The clamping cylinder lateral wall is fixedly connected with lifting column, and the clamp column offers described in confession far from one end of the lathe bed
The lifting groove that lifting column plugs, the outside screw of the clamp column are connected with the clamping screw pushed against with the lifting column.
Through the above technical solutions, unscrew clamping screw, the adjustable height and position for clamping cylinder, and adjust and clamp cylinder
Axial direction, by pushing against press post and workpiece, compressible elastomeric part makes workpiece is clamped to fix, then by different
Direction of rotation screws transformation column, it can be achieved that release or pressurization to elastic component, the convenient adjusting to workpiece clamp holding force.
The present invention is further arranged to: the lathe bed is fixedly connected with and the power close to the side of the feeding material component
The security protection module of component electrical connection, the security protection module are described for making when detecting object close to the saw band
Power Component power-off.
The present invention is further arranged to: the security protection module includes safe light curtain and is electrically connected with the safe light curtain
Control circuit, the control circuit controls the Power Component start and stop.
Compared with prior art, the beneficial effects of the present invention are:
Drive saw before column decline cutting by saw frame, feeding portion send clamp assemblies to saw band, by clamping group
Part is rotated, and the cutting position and angle of workpiece are adjusted, and without installing fixation again after removing workpiece, is easy to use, favorably
In promotion working efficiency.
Detailed description of the invention
Fig. 1 is the overall structure diagram of the embodiment of the present invention;
Fig. 2 is the overlooking structure diagram of the embodiment of the present invention;
Fig. 3 is the part-structure sectional view of feeding material component in the embodiment of the present invention;
Fig. 4 is the partial structure diagram of clamp assemblies in the embodiment of the present invention.
Appended drawing reference: 1, lathe bed;2, column;3, saw frame;4, saw band;5, Power Component;6, feeding material component;61, feeding portion;
611, rotating electric machine;612, swivel plate;613, tilt component;6131, servo motor;6132, cam;62, clamp assemblies;621,
Prop up column;622, hang plate;623, oblique ball;624, tipper;625, rotary cylinder;626, the first fixture;627, clamp column;
628, clamping element;6281, cylinder is clamped;6282, transformation column;6283, press post;6284, elastic component;6285, lifting column;6286,
Lifting groove;6287, clamping screw;63, feeding motor;64, guide rail;65, ball screw;7, safe light curtain.
Specific embodiment
With reference to the accompanying drawings and examples, the present invention will be described in detail.
A kind of highly reliable multi-angle cutting band sawing machine including lathe bed 1, is installed on lathe bed 1 referring to figs. 1 and 2
Two root posts 2 and the saw frame 3 that can be gone up and down along the column 2, be installed with saw band 4 and be able to drive saw band 4 on saw frame 3 and be cut
The Power Component 5 cut is provided with feeding material component 6 on lathe bed 1.Feeding material component 6 includes the feeding portion being slidably arranged on lathe bed 1
61, clamp assemblies 62 for clamping workpiece of the institute's feeding portion 61 far from 1 side of lathe bed, the sliding of feeding portion 61 are rotatably arranged on
Direction is vertical with the cut direction of saw band 4.
Saw frame 3 drives saw band 4 before the decline cutting of column 2, by can feeding portion 61 clamp assemblies 62 are sent to saw band 4 just
Lower section is rotated further by clamp assemblies 62, adjusts the cutting position and angle of workpiece, it is not necessary that fixation is installed after removing workpiece again, side
Just it uses, is conducive to promote working efficiency.
Specifically, referring to figs. 1 and 2, feeding material component 6 includes the feeding motor 63 being fixedly connected on lathe bed 1, consolidates
Be scheduled on lathe bed 1 for guide rail 64 and with feeding motor 63 be sequentially connected ball screw 65, the nut of ball screw 65 with
Feeding portion 61 is fixedly connected, and ball screw 65 can be driven to rotate by feeding motor 63, is changed to by 65 rotary motion of ball screw
Linear motion, so as to easily realize the sliding motion of feeding portion 61.
As shown in figure 3, being fixedly installed rotating electric machine 611 in feeding portion 61, the output shaft of rotating electric machine 611 is fixedly connected
There is swivel plate 612, clamp assemblies 62 and swivel plate 612 are sequentially connected.Swivel plate 612 can be driven to rotate by rotating electric machine 611, made
Clamp assemblies 62 drive workpiece to rotate simultaneously, realize the change of workpiece angle and position.
At least three tilt components 613 are arranged far from the side of lathe bed 1 in swivel plate 612, and tilt component 613 includes servo electricity
Machine 6131, the cam 6132 being sequentially connected with servo motor 6131, clamp assemblies 62 are separate including being fixedly connected on feeding portion 61
1 one side of lathe bed props up column 621 and hang plate 622, further includes the multiple rotary cylinders 625 being fixedly connected on hang plate 622
Respectively with rotary cylinder 625 be sequentially connected the first fixture 626, the first opposite fixture 626 by rotary cylinder 625 driving with
Workpiece pushes against.It props up column 621 and is fixedly connected with oblique ball 623 far from one end of feeding portion 61, hang plate 622 is close to feeding portion 61
Offer on one side and the matched tipper 624 of oblique ball 623, the one side of cam 6132 and hang plate 622 close to feeding portion 61
It abuts.Tipper 624 on hang plate 622 is matched with oblique ball 623, so that hang plate 622 can be around oblique ball 623 at certain angle
Inclination is generated on degree, cam 6132 is abutted with hang plate 622, and servo motor 6131 drives cam 6132 to rotate controllable hang plate
622 tilt angle facilitates the adjusting of the location of workpiece.
As shown in figure 4, clamp assemblies 62 further include the multiple clamp columns 627 being fixedly connected on hang plate 622 and set
It sets in clamping element 628 of the clamp column 627 far from 1 side of lathe bed.Clamping element 628 includes clamping cylinder 6281, being threaded in clamping
The transformation column 6282 of 6281 one end of cylinder is slidably arranged in the press post 6283 for clamping 6281 other end of cylinder and is arranged in transformation column
Elastic component 6284 between 6282 and press post 6283;It clamps 6281 lateral wall of cylinder and is fixedly connected with lifting column 6285, clamp column
627 one end far from lathe bed 1 offer the lifting groove 6286 plugged for lifting column 6285, the outside screw connection of clamp column 627
There is the clamping screw 6287 pushed against with lifting column 6285.
Unscrew clamping screw 6287, the adjustable height and position for clamping cylinder 6281, and adjusts the axis for clamping cylinder 6281
To direction, by pushing against press post 6283 and workpiece, compressible elastomeric part 6284 makes workpiece is clamped to fix, then by not
With direction of rotation screw transformation column 6282, it can be achieved that release or pressurization to elastic component 6284, convenient to workpiece clamp holding force
It adjusts.
It is protected as shown in Figure 1, lathe bed 1 is fixedly connected with the safety being electrically connected with Power Component 5 close to the side of feeding material component 6
Module is protected, security protection module includes safe light curtain 7 and the control circuit that be electrically connected with safe light curtain 7, and control circuit control is moved
5 start and stop of power component.
The above is only a preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art
Those of ordinary skill for, several improvements and modifications without departing from the principles of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (8)
1. a kind of highly reliable multi-angle cuts band sawing machine, including lathe bed (1), the two root posts (2) being installed on the lathe bed (1)
Saw frame (3) with that can go up and down along the column (2), be installed with saw band (4) on the saw frame (3) and be able to drive the saw band
(4) Power Component (5) cut, which is characterized in that be provided with feeding material component (6) on the lathe bed (1);
The feeding material component (6) includes the feeding portion (61) being slidably arranged on the lathe bed (1), is rotatably arranged on institute's feeding portion
(61) far from the clamp assemblies (62) for clamping workpiece of the lathe bed (1) side;
The glide direction of the feeding portion (61) is vertical with the cut direction of the saw band (4).
2. highly reliable multi-angle according to claim 1 cuts band sawing machine, which is characterized in that feeding material component (6) packet
Include the feeding motor (63) being fixedly connected on the lathe bed (1), be fixed on the lathe bed (1) for guide rail (64) and with
The ball screw (65) of feeding motor (63) transmission connection, nut and the feeding portion (61) of the ball screw (65)
It is fixedly connected.
3. highly reliable multi-angle according to claim 2 cuts band sawing machine, which is characterized in that solid in the feeding portion (61)
Surely it is provided with rotating electric machine (611), the output shaft of the rotating electric machine (611) is fixedly connected with swivel plate (612), the clamping
Component (62) and the swivel plate (612) are sequentially connected.
4. highly reliable multi-angle according to claim 3 cuts band sawing machine, which is characterized in that the swivel plate (612) is remote
At least three tilt components (613) are arranged in side from the lathe bed (1), and the tilt component (613) includes servo motor
(6131), the cam (6132) being sequentially connected with the servo motor (6131);
The clamp assemblies (62) include being fixedly connected on the feeding portion (61) to prop up column far from the lathe bed (1) one side
(621) and hang plate (622), described one end for propping up column (621) separate the feeding portion (61) are fixedly connected with oblique ball
(623), the hang plate (622) offering on one side and the oblique ball (623) is matched inclines close to the feeding portion (61)
Skewed slot (624);
One side of the cam (6132) with the hang plate (622) close to the feeding portion (61) abuts.
5. highly reliable multi-angle according to claim 4 cuts band sawing machine, which is characterized in that clamp assemblies (62) packet
It includes the multiple rotary cylinders (625) being fixedly connected on the hang plate (622) and is driven respectively with the rotary cylinder (625)
The first fixture (626) of connection, opposite first fixture (626) is by the rotary cylinder (625) driving and the workpiece
It pushes against.
6. highly reliable multi-angle according to claim 5 cuts band sawing machine, which is characterized in that clamp assemblies (62) packet
The multiple clamp columns (627) being fixedly connected on the hang plate (622) and setting are included in the clamp column (627) far from institute
State the clamping element (628) of lathe bed (1) side;
The clamping element (628) includes clamping cylinder (6281), being threaded in the transformation column for clamping cylinder (6281) one end
(6282), it is slidably arranged in the press post (6283) for clamping cylinder (6281) other end and is arranged in the transformation column
(6282) elastic component (6284) between the press post (6283);
Clamping cylinder (6281) lateral wall is fixedly connected with lifting column (6285), and the clamp column (627) is far from the lathe bed
(1) one end offers the lifting groove (6286) plugged for the lifting column (6285), the outside screw of the clamp column (627)
It is connected with the clamping screw (6287) pushed against with the lifting column (6285).
7. highly reliable multi-angle according to claim 1 cuts band sawing machine, which is characterized in that the lathe bed (1) is close to institute
The side for stating feeding material component (6) is fixedly connected with the security protection module being electrically connected with the Power Component (5), and the safety is protected
Shield module is for powering off the Power Component (5) when detecting object close to the saw band (4).
8. highly reliable multi-angle according to claim 7 cuts band sawing machine, which is characterized in that the security protection module packet
The control circuit for including safe light curtain (7) and being electrically connected with the safe light curtain (7), the control circuit control the Power Component
(5) start and stop.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201910602075.XA CN110238449A (en) | 2019-07-05 | 2019-07-05 | A kind of highly reliable multi-angle cutting band sawing machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201910602075.XA CN110238449A (en) | 2019-07-05 | 2019-07-05 | A kind of highly reliable multi-angle cutting band sawing machine |
Publications (1)
Publication Number | Publication Date |
---|---|
CN110238449A true CN110238449A (en) | 2019-09-17 |
Family
ID=67891140
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201910602075.XA Pending CN110238449A (en) | 2019-07-05 | 2019-07-05 | A kind of highly reliable multi-angle cutting band sawing machine |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN110238449A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111113521A (en) * | 2020-02-27 | 2020-05-08 | 广州基俊机械科技有限公司 | Workpiece cutting device with multi-angle tangent plane |
CN112356115A (en) * | 2020-10-23 | 2021-02-12 | 山东茂盛管业有限公司 | PE pipe cutting system of multi-angle |
CN112536504A (en) * | 2020-12-10 | 2021-03-23 | 江苏科技大学 | Automatic removing device and method for casting head of bearing seat of diesel engine |
CN113211132A (en) * | 2021-05-24 | 2021-08-06 | 马鞍山钢铁股份有限公司 | Sawing machine clamp device and clamping operation method |
-
2019
- 2019-07-05 CN CN201910602075.XA patent/CN110238449A/en active Pending
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111113521A (en) * | 2020-02-27 | 2020-05-08 | 广州基俊机械科技有限公司 | Workpiece cutting device with multi-angle tangent plane |
CN111113521B (en) * | 2020-02-27 | 2021-03-09 | 广州基俊机械科技有限公司 | Workpiece cutting device with multi-angle tangent plane |
CN112356115A (en) * | 2020-10-23 | 2021-02-12 | 山东茂盛管业有限公司 | PE pipe cutting system of multi-angle |
CN112536504A (en) * | 2020-12-10 | 2021-03-23 | 江苏科技大学 | Automatic removing device and method for casting head of bearing seat of diesel engine |
CN112536504B (en) * | 2020-12-10 | 2022-04-15 | 江苏科技大学 | Automatic removing device and method for casting head of bearing seat of diesel engine |
CN113211132A (en) * | 2021-05-24 | 2021-08-06 | 马鞍山钢铁股份有限公司 | Sawing machine clamp device and clamping operation method |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN110238449A (en) | A kind of highly reliable multi-angle cutting band sawing machine | |
CN108787857A (en) | A kind of sliding positioning clamping punching fixture | |
CN203330718U (en) | Rapid spiral clamping device | |
CN210139125U (en) | Hexagonal nut is clamping processingequipment in batches | |
CN102756278A (en) | Automatic drilling, taping and chamfering machine | |
CN207953243U (en) | A kind of drill jig being applicable to plane and curve surface work pieces | |
CN210132125U (en) | High-reliability multi-angle cutting band sawing machine | |
CN212578044U (en) | Adjustable anchor clamps for machining | |
CN216502771U (en) | Quick chamfering device for bolt machining | |
CN208117270U (en) | A kind of shaft key groove fixture for processing | |
CN213163484U (en) | External thread machining device | |
CN215788176U (en) | High-precision thread cutting tool preparation device | |
CN105458764A (en) | Clamp for cutting | |
CN208961119U (en) | A kind of sawing machine for castings production | |
CN202861767U (en) | Automatic drilling tapping chamfering machine | |
CN211565199U (en) | Machining device | |
CN211388307U (en) | Clamping device for grinding oilstone radian | |
CN212946565U (en) | Multi-station efficient milling machine | |
CN218283364U (en) | Pneumatic desktop punch press anchor clamps | |
CN214979541U (en) | Position adjusting device is used in motor shaft processing | |
CN220006275U (en) | Grinding device | |
CN213842687U (en) | Three-dimensional adjustment universal sampling platform | |
CN216541915U (en) | Multi-angle adjustable drilling equipment for machining | |
CN212095333U (en) | Positioner for machining | |
CN219043694U (en) | Full-automatic nut tapping device |
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 |