CN115990721A - Welding seat for laser welding and use method - Google Patents
Welding seat for laser welding and use method Download PDFInfo
- Publication number
- CN115990721A CN115990721A CN202310129183.6A CN202310129183A CN115990721A CN 115990721 A CN115990721 A CN 115990721A CN 202310129183 A CN202310129183 A CN 202310129183A CN 115990721 A CN115990721 A CN 115990721A
- Authority
- CN
- China
- Prior art keywords
- fixedly connected
- threaded rod
- support frame
- threaded
- welding
- 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
- 238000003466 welding Methods 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000009434 installation Methods 0.000 claims description 2
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Landscapes
- Laser Beam Processing (AREA)
Abstract
The invention belongs to the technical field of welding seats and relates to a welding seat for laser welding and a use method thereof. The welding seat for the laser welding and the use method thereof have the beneficial effects that the welding seat for the laser welding and the use method thereof can work through the driving motor, so that the first threaded rod, the first rotating shaft and the second threaded rod can be driven to rotate, the threaded sleeve and the limiting block are driven to move, the supporting seat body is clamped, the stability of the supporting seat body during work is ensured, the clamping groove and the clamping block are arranged, the second mounting plate, the first fixing block and the limiting block can be clamped and mounted, the different limiting blocks can be conveniently replaced, the use of labor force is reduced, and meanwhile, the work efficiency of the device is ensured.
Description
Technical Field
The invention belongs to the technical field of welding seats, and particularly relates to a welding seat for laser welding and a use method thereof.
Background
In some mechanical devices, a lot of parts are used, some parts need to be processed by using a welding method, wherein the welding efficiency of laser welding is higher, and when the parts are welded by laser, the parts need to be fixed, and a fixed base body is generally used for fixing, and the base body is welded and connected.
However, the existing welding of parts with different sizes often has the problems of inconvenient replacement and influence on the service efficiency, and the problem of poor stability caused by poor effect of inconvenient position adjustment and limitation on the welding seat.
Disclosure of Invention
To solve the problems set forth in the background art. The invention provides a welding seat for laser welding, which solves the technical problems that parts with different sizes are often inconvenient to replace and influence the service efficiency, and the stability is poor due to the fact that the effects of inconvenient position adjustment and limitation on the welding seat are poor.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a laser welding's welding seat, includes the support frame, the inside groove that has seted up of support frame, inside driving motor that is provided with of inside groove, driving motor output shaft fixedly connected with first threaded rod, first threaded rod one end fixedly connected with first pivot, first pivot one end fixedly connected with second threaded rod, second threaded rod one end fixedly connected with second pivot, the second pivot passes through the bearing and cup joints in the support frame inboard, the equal threaded connection of first threaded rod and second threaded rod surface has the thread bush, thread bush top fixedly connected with first mounting panel, the draw-in groove has been seted up to inside the first mounting panel, the joint has the fixture block in the draw-in groove, fixture block top fixedly connected with second mounting panel, second mounting panel top fixedly connected with first fixed block, first fixed block one side fixedly connected with stopper, support frame top fixedly connected with backup pad, backup pad top overlap joint has the backup pad body, stopper joint is in backup pad body one side.
As a further aspect of the invention: the support frame is internally provided with a connecting chute, a connecting slide block is connected in a sliding manner in the connecting chute, and the connecting slide block is fixedly connected to the bottom of the thread bush.
As a further aspect of the invention: the screw thread direction of first threaded rod is opposite with the screw thread direction of second threaded rod, support slider is fixedly connected with bottom the support frame.
As a further aspect of the invention: the support frame is internally fixedly connected with a first sleeve, and the output shaft of the driving motor is sleeved in the first sleeve.
As a further aspect of the invention: the inside top of support frame is provided with the second fixed block, the inside fixedly connected with second sleeve of second fixed block, first pivot cup joints inside the second sleeve.
As a further aspect of the invention: the support frame one side fixedly connected with locating plate, the inside second screw hole that has seted up of locating plate, the inside threaded connection of second screw hole has the second bolt.
As a further aspect of the invention: the first threaded holes are formed in the first mounting plate and the second mounting plate, and the first bolts are connected with the first threaded holes in a threaded mode.
As a further aspect of the invention: one side of the support frame is fixedly connected with a control panel, and the control panel is electrically connected with the driving motor through a wire.
As a further aspect of the invention: the application method of the welding seat for laser welding comprises the following steps:
step one: firstly, a pushing device moves to a working position by means of a supporting chute, then the device is limited and fixed by means of a second bolt and a second threaded hole, after the device is installed and fixed, a supporting seat body can be placed on the surface of a supporting plate, a driving motor is controlled to work by a control panel, a first threaded rod, a first rotating shaft and a second threaded rod are driven to rotate, a thread bush and a limiting block are driven to move, the supporting seat body is clamped, a workpiece is installed by means of the supporting seat, and welding treatment is carried out by means of laser;
step two: for different workpieces, if the different limiting blocks need to be replaced, the first bolt is only required to be rotated, the fixing of the second mounting plate is loosened, the previous limiting block can be taken down, a new limiting block is placed by means of the clamping groove and the clamping block, meanwhile, the new limiting block can be installed and fixed by means of the first bolt and the first threaded hole, replacement can be completed, and the limiting block can be used continuously after replacement.
Compared with the prior art, the invention has the beneficial effects that:
according to the welding seat for laser welding and the use method, the driving motor works, the first threaded rod, the first rotating shaft and the second threaded rod can be driven to rotate, the threaded sleeve and the limiting block are driven to move, the supporting seat body is clamped, the stability of the supporting seat body during working is guaranteed, the second mounting plate, the first fixing block and the limiting block can be clamped and mounted through the clamping groove and the clamping block, different limiting blocks can be replaced conveniently, the use of labor force is reduced, and meanwhile the work efficiency of the device is guaranteed.
This laser welding's welded seat and application method through setting up connection spout and connecting slider, can ensure the stability of thread bush when removing the adjustment, through setting up the support slider, conveniently adjusts the position of device according to the condition, makes things convenient for follow-up welding work, through setting up first sleeve, can support driving motor output shaft, the stability when guaranteeing device control adjustment, through setting up the second sleeve, can support first pivot, the stability when can further guarantee device control adjustment to ensure the overall stability of device when the adjustment is used.
According to the welding seat for laser welding and the use method, the locating plate and the device can be fixed through the second threaded hole and the second bolt, the stability of fixing the device after position adjustment can be guaranteed, the second mounting plate can be fixed through the first threaded hole and the first bolt, the strength of device mounting connection is guaranteed, the electric elements of the device can be controlled through the control panel, and therefore the device is convenient to control.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:
FIG. 1 is a schematic cross-sectional elevation view of the present invention;
FIG. 2 is a schematic elevational view of the present invention;
FIG. 3 is a schematic diagram of the structure at A in FIG. 1;
in the figure: 1. a support frame; 2. a positioning plate; 3. a second threaded hole; 4. a second bolt; 5. a driving motor; 6. an inner tank; 7. a first sleeve; 8. a second fixed block; 9. a limiting block; 10. a support base body; 11. a support plate; 12. a first fixed block; 13. a second sleeve; 14. a first rotating shaft; 15. a second threaded rod; 16. a thread sleeve; 17. a second rotating shaft; 18. the connecting chute; 19. the connecting slide block; 20. a first threaded rod; 21. a control panel; 22. a first threaded hole; 23. a first bolt; 24. a second mounting plate; 25. a clamping groove; 26. a clamping block; 27. a first mounting plate; 28. and supporting the sliding block.
Description of the embodiments
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Examples
Referring to fig. 1-3, the present invention provides the following technical solutions: the utility model provides a laser welding's welding seat, including support frame 1, inside 6 of support frame, inside 6 is provided with driving motor 5, work through driving motor 5, can rotate first threaded rod 20 to driving, first pivot 14 and second threaded rod 15, thereby drive thread bush 16 and stopper 9 removal, carry out the centre gripping to support seat body 10 and handle, the stability when guaranteeing support seat body 10 work, driving motor 5 output shaft fixedly connected with first threaded rod 20, first pivot 14 of first threaded rod 20 one end fixedly connected with, first pivot 14 one end fixedly connected with second threaded rod 15, second threaded rod 15 one end fixedly connected with second pivot 17, second pivot 17 cup joints in support frame 1 inboard through the bearing, first threaded rod 20 and second threaded rod 15 surface equal threaded connection have thread bush 16, thread bush 16 top fixedly connected with first mounting panel 27, draw-in groove 25 has been seted up to first mounting panel 27 inside, through setting up draw-in groove 25 and fixture block 26, can carry out joint installation to second mounting panel 24, first fixed block 12 and stopper 9, can conveniently change different stoppers 9, guarantee that work efficiency to use stopper device 12 at the first support frame 1 side is fixed connection support frame 10, first support frame 11, the fixed connection top mounting panel is had the top portion of support frame 10, the fixed connection top mounting panel is fixed connection to the stopper 1, the top portion is fixed connection of second support frame is had the fixture block 26.
Specifically, the inside connection spout 18 of having offered of support frame 1 can ensure the stability of thread bush 16 when removing the adjustment through setting up connection spout 18 and connection slider 19, and connection slider 19 sliding connection has connection slider 19 in connection spout 18, and connection slider 19 fixed connection is in thread bush 16 bottom, and the screw thread direction of first threaded rod 20 and second threaded rod 15 is opposite, and support frame 1 bottom fixedly connected with support slider 28, through setting up support slider 28, conveniently adjusts the position of device according to the condition, makes things convenient for follow-up welding work.
Specifically, the inside fixedly connected with first sleeve 7 of support frame 1 through setting up first sleeve 7, can support driving motor 5 output shaft, stability when guarantee device control adjustment, driving motor 5 output shaft cup joints inside first sleeve 7, the inside top of support frame 1 is provided with second fixed block 8, the inside fixedly connected with second sleeve 13 of second fixed block 8, first pivot 14 cup joints inside second sleeve 13, through setting up second sleeve 13, can support first pivot 14, stability when can further guarantee device control adjustment, thereby the overall stability of guarantee device when the adjustment is used.
Specifically, support frame 1 one side fixedly connected with locating plate 2, the inside second screw hole 3 of having seted up of locating plate 2, the inside threaded connection of second screw hole 3 has second bolt 4, through setting up second screw hole 3 and second bolt 4, can fix locating plate 2 and device, can ensure the stability of fixing after the device position adjustment, first screw hole 22 has been seted up to first mounting panel 27 and second mounting panel 24 inside, first screw hole 22 inside threaded connection has first bolt 23, through setting up first screw hole 22 and first bolt 23, can fix second mounting panel 24, ensure the intensity of device erection joint.
Specifically, the control panel 21 is fixedly connected to one side of the support frame 1, the control panel 21 is electrically connected with the driving motor 5 through a wire, and the electric elements of the device can be controlled by arranging the control panel 21, so that the device is conveniently controlled.
Specifically, the application method of the welding seat for laser welding comprises the following steps:
step one: firstly, a pushing device moves to a working position by means of a supporting chute, then the device is limited and fixed by means of a second bolt 4 and a second threaded hole 3, after the device is installed and fixed, a supporting seat body 10 can be placed on the surface of a supporting plate 11, a driving motor 5 is controlled to work by a control panel 21, a first threaded rod 20, a first rotating shaft 14 and a second threaded rod 15 are driven to rotate, a threaded sleeve 16 and a limiting block 9 are driven to move, the supporting seat body 10 is clamped, a workpiece is installed by means of a supporting seat, and welding is carried out by means of laser;
step two: for different workpieces, if the different limiting blocks 9 need to be replaced, the first bolts 23 are only required to be rotated, the fixing of the second mounting plate 24 is loosened, the previous limiting blocks 9 can be taken down, new limiting blocks 9 are placed by means of the clamping grooves 25 and the clamping blocks 26, meanwhile, the new limiting blocks 9 can be installed and fixed by means of the first bolts 23 and the first threaded holes 22, replacement can be completed, and the limiting blocks can be used continuously after replacement.
The working principle of the invention is as follows:
step one: firstly, a pushing device moves to a working position by means of a supporting chute, then the device is limited and fixed by means of a second bolt 4 and a second threaded hole 3, after the device is installed and fixed, a supporting seat body 10 can be placed on the surface of a supporting plate 11, a driving motor 5 is controlled to work by a control panel 21, a first threaded rod 20, a first rotating shaft 14 and a second threaded rod 15 are driven to rotate, a threaded sleeve 16 and a limiting block 9 are driven to move, the supporting seat body 10 is clamped, a workpiece is installed by means of a supporting seat, and welding is carried out by means of laser;
step two: for different workpieces, if the different limiting blocks 9 need to be replaced, the first bolts 23 are only required to be rotated, the fixing of the second mounting plate 24 is loosened, the previous limiting blocks 9 can be taken down, new limiting blocks 9 are placed by means of the clamping grooves 25 and the clamping blocks 26, meanwhile, the new limiting blocks 9 can be installed and fixed by means of the first bolts 23 and the first threaded holes 22, replacement can be completed, and the limiting blocks can be used continuously after replacement.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that alterations, modifications, substitutions and variations may be made in the above embodiments by those skilled in the art within the scope of the invention.
Claims (9)
1. The utility model provides a laser welding's welding seat, includes support frame (1), its characterized in that: an inner groove (6) is formed in the support frame (1), a driving motor (5) is arranged in the inner groove (6), a first threaded rod (20) is fixedly connected to an output shaft of the driving motor (5), a first rotating shaft (14) is fixedly connected to one end of the first threaded rod (20), a second threaded rod (15) is fixedly connected to one end of the first rotating shaft (14), a second rotating shaft (17) is fixedly connected to one end of the second threaded rod (15), the second rotating shaft (17) is sleeved on the inner side of the support frame (1) through a bearing, threaded sleeves (16) are respectively and threadedly connected to surfaces of the first threaded rod (20) and the second threaded rod (15), and a first mounting plate (27) is fixedly connected to the top of each threaded sleeve (16).
Clamping grooves (25) are formed in the first mounting plates (27), clamping blocks (26) are clamped in the clamping grooves (25), second mounting plates (24) are fixedly connected to the tops of the clamping blocks (26), first fixing blocks (12) are fixedly connected to the tops of the second mounting plates (24), limiting blocks (9) are fixedly connected to one sides of the first fixing blocks (12), supporting plates (11) are fixedly connected to the tops of the supporting frames (1), supporting seat bodies (10) are lapped on the tops of the supporting plates (11), and the limiting blocks (9) are clamped on one sides of the supporting seat bodies (10).
2. A laser welded weld stack according to claim 1, characterized in that: the support frame (1) is internally provided with a connecting chute (18), a connecting slide block (19) is connected in a sliding manner in the connecting chute (18), and the connecting slide block (19) is fixedly connected to the bottom of the threaded sleeve (16).
3. A laser welded weld stack according to claim 1, characterized in that: the screw thread direction of first threaded rod (20) is opposite with the screw thread direction of second threaded rod (15), support slider (28) are fixedly connected with in support frame (1) bottom.
4. A laser welded weld stack according to claim 1, characterized in that: the support frame (1) is internally fixedly connected with a first sleeve (7), and an output shaft of the driving motor (5) is sleeved in the first sleeve (7).
5. A laser welded weld stack according to claim 1, characterized in that: the top of the inside of the support frame (1) is provided with a second fixed block (8), a second sleeve (13) is fixedly connected to the inside of the second fixed block (8), and the first rotating shaft (14) is sleeved inside the second sleeve (13).
6. A laser welded weld stack according to claim 1, characterized in that: the support frame (1) one side fixedly connected with locating plate (2), second screw hole (3) have been seted up to locating plate (2) inside, second screw hole (3) internal thread connection has second bolt (4).
7. A laser welded weld stack according to claim 1, characterized in that: first screw holes (22) are formed in the first mounting plate (27) and the second mounting plate (24), and first bolts (23) are connected with the first screw holes (22) in a threaded mode.
8. A laser welded weld stack according to claim 1, characterized in that: one side of the support frame (1) is fixedly connected with a control panel (21), and the control panel (21) is electrically connected with the driving motor (5) through a lead.
9. A method of using a laser welded weld base comprising the laser welded weld base of claims 1-8, characterized by: the method comprises the following steps:
step one: firstly, a pushing device moves to a working position by means of a supporting chute, then the device is limited and fixed by means of a second bolt (4) and a second threaded hole (3), after the device is installed and fixed, a supporting seat body (10) can be placed on the surface of a supporting plate (11), a driving motor (5) is controlled to work by a control panel (21), a first threaded rod (20), a first rotating shaft (14) and a second threaded rod (15) are driven to rotate, so that a threaded sleeve (16) and a limiting block (9) are driven to move, the supporting seat body (10) is clamped, a workpiece is installed by means of a supporting seat, and welding treatment is carried out by means of laser;
step two: for different workpieces, if the different limiting blocks (9) need to be replaced, the first bolts (23) are only required to be rotated, the fixing of the second mounting plates (24) is loosened, the previous limiting blocks (9) can be taken down, the new limiting blocks (9) are placed by means of the clamping grooves (25) and the clamping blocks (26), meanwhile, the new limiting blocks (9) can be replaced by means of the first bolts (23) and the first threaded holes (22), and the replacement can be completed by means of the installation and fixation of the new limiting blocks (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310129183.6A CN115990721A (en) | 2023-02-17 | 2023-02-17 | Welding seat for laser welding and use method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310129183.6A CN115990721A (en) | 2023-02-17 | 2023-02-17 | Welding seat for laser welding and use method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115990721A true CN115990721A (en) | 2023-04-21 |
Family
ID=85995068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310129183.6A Pending CN115990721A (en) | 2023-02-17 | 2023-02-17 | Welding seat for laser welding and use method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115990721A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102848124A (en) * | 2012-09-13 | 2013-01-02 | 济南天辰铝机制造有限公司 | Turnover welding device for H-type steel |
| CN102922343A (en) * | 2012-11-17 | 2013-02-13 | 无锡新宏泰电器科技股份有限公司 | Tool clamp for drilling by rotor shaft |
| CN104440212A (en) * | 2014-10-23 | 2015-03-25 | 秦科 | Driller clamp |
| CN209737086U (en) * | 2019-04-03 | 2019-12-06 | 袁建乡 | Fixing clamp for machining |
| CN111843355A (en) * | 2020-09-11 | 2020-10-30 | 浙江玉强机械股份有限公司 | Automatic welding device for steering yoke |
| CN212571966U (en) * | 2020-07-31 | 2021-02-19 | 江苏荣年电气有限公司 | Adjustable cable testing bridge that uses |
| CN212950251U (en) * | 2020-07-14 | 2021-04-13 | 盐城同环机电科技有限公司 | Car seat installation nut plate |
| CN216298060U (en) * | 2021-10-09 | 2022-04-15 | 甄艳莎 | Numerical control drilling machine fixing clamp |
| CN216477980U (en) * | 2021-11-16 | 2022-05-10 | 湖北兴雨泵业股份有限公司 | Centrifugal pump unable adjustment base convenient to installation |
| CN218057375U (en) * | 2022-03-31 | 2022-12-16 | 长沙鹏聚机器人有限公司 | Automatic mud base pile up neatly device of robot |
-
2023
- 2023-02-17 CN CN202310129183.6A patent/CN115990721A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102848124A (en) * | 2012-09-13 | 2013-01-02 | 济南天辰铝机制造有限公司 | Turnover welding device for H-type steel |
| CN102922343A (en) * | 2012-11-17 | 2013-02-13 | 无锡新宏泰电器科技股份有限公司 | Tool clamp for drilling by rotor shaft |
| CN104440212A (en) * | 2014-10-23 | 2015-03-25 | 秦科 | Driller clamp |
| CN209737086U (en) * | 2019-04-03 | 2019-12-06 | 袁建乡 | Fixing clamp for machining |
| CN212950251U (en) * | 2020-07-14 | 2021-04-13 | 盐城同环机电科技有限公司 | Car seat installation nut plate |
| CN212571966U (en) * | 2020-07-31 | 2021-02-19 | 江苏荣年电气有限公司 | Adjustable cable testing bridge that uses |
| CN111843355A (en) * | 2020-09-11 | 2020-10-30 | 浙江玉强机械股份有限公司 | Automatic welding device for steering yoke |
| CN216298060U (en) * | 2021-10-09 | 2022-04-15 | 甄艳莎 | Numerical control drilling machine fixing clamp |
| CN216477980U (en) * | 2021-11-16 | 2022-05-10 | 湖北兴雨泵业股份有限公司 | Centrifugal pump unable adjustment base convenient to installation |
| CN218057375U (en) * | 2022-03-31 | 2022-12-16 | 长沙鹏聚机器人有限公司 | Automatic mud base pile up neatly device of robot |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110153752B (en) | Large-scale axle type parts machining clamping equipment that can dismantle fast | |
| CN210732335U (en) | Butt joint device for natural gas pipeline installation | |
| CN215146908U (en) | Turning clamp for cylindrical four-way workpiece | |
| CN214867472U (en) | Frock clamp convenient to work piece drilling | |
| CN115990721A (en) | Welding seat for laser welding and use method | |
| CN211248396U (en) | Auto-parts drilling equipment with duplex position | |
| CN211804625U (en) | A welding auxiliary device for automobile parts processing | |
| CN213381168U (en) | Quick positioning fixture of axle type cylinder work piece | |
| CN213003566U (en) | Welding equipment for machining alloy workpiece | |
| CN114914637A (en) | Laser welding machine for processing full-lug large cylindrical battery | |
| CN210188725U (en) | Special chamfering machine for gear sleeve | |
| CN203197731U (en) | Electrode cap sharpening machine fixture | |
| CN220050939U (en) | Small shaft workpiece clamp | |
| CN219053425U (en) | Welding machine is restoreed to mould | |
| CN220240550U (en) | Welding jig is assembled to support | |
| CN216657199U (en) | Electric control mechanical fixture table | |
| CN220498229U (en) | Electric welding automatic clamp convenient to adjust | |
| CN215999255U (en) | Large-scale work piece welding frock | |
| CN216030423U (en) | Be used for accurate part fast switch over clamping tool | |
| CN220278751U (en) | Welding rotating tool | |
| CN220050955U (en) | Motor seat positioning processing clamp | |
| CN215999078U (en) | Semi-automatic electric welding machine is used in auto-parts processing | |
| CN219484735U (en) | Welding jig of high accuracy | |
| CN220462807U (en) | Auxiliary fixing device for welding tool box assembly | |
| CN116833664B (en) | Vehicle rear axle housing welding platform |
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 |