Difference between revisions of "Skill-Development--Fitter/C2/Filing-a-workpiece/English-timed"
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| 00:00 | | 00:00 | ||
− | | Hello and welcome to the Spoken Tutorial on Filing a Workpiece | + | | Hello and welcome to the Spoken Tutorial on '''Filing a Workpiece''' |
|- | |- | ||
Line 13: | Line 13: | ||
|- | |- | ||
| 00:10 | | 00:10 | ||
− | | What is filing? | + | | What is '''filing?''' |
|- | |- | ||
| 00:12 | | 00:12 | ||
− | | Various tools used for filing | + | | Various tools used for '''filing''' |
|- | |- | ||
| 00:15 | | 00:15 | ||
− | | Different types of filing | + | | Different types of '''filing''' |
|- | |- | ||
| 00:17 | | 00:17 | ||
− | | How to file a workpiece | + | | How to '''file''' a '''workpiece''' |
|- | |- | ||
| 00:22 | | 00:22 | ||
− | | And common mistakes while filing | + | | And common mistakes while '''filing''' |
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| 00:27 | | 00:27 | ||
− | | A file | + | | A '''file''', The '''workpiece''' to be '''filed''' |
− | + | ||
− | + | ||
− | + | ||
− | + | ||
|- | |- | ||
| 00:31 | | 00:31 | ||
− | | Bench Vice to hold the workpiece | + | | '''Bench Vice''' to hold the '''workpiece''' |
|- | |- | ||
| 00:34 | | 00:34 | ||
− | | Vernier Calliper to measure | + | |'''Vernier Calliper''' to measure |
|- | |- | ||
| 00:37 | | 00:37 | ||
− | | Try Square to check the workpiece's squareness | + | | '''Try Square''' to check the '''workpiece's squareness''' |
|- | |- | ||
| 00:42 | | 00:42 | ||
− | | Hack saw to cut the workpiece | + | | '''Hack saw''' to cut the '''workpiece''' |
|- | |- | ||
| 00:45 | | 00:45 | ||
− | | Punch to mark on the workpiece | + | | '''Punch''' to mark on the '''workpiece''' |
|- | |- | ||
| 00:48 | | 00:48 | ||
− | | And a Ball pein hammer | + | | And a '''Ball pein hammer''' |
|- | |- | ||
| 00:51 | | 00:51 | ||
− | | First let's see, what is filing. | + | | First let's see, what is '''filing.''' |
|- | |- | ||
| 00:54 | | 00:54 | ||
− | | Filing is a method of removing excess material from a job or a workpiece using a file. | + | |'''Filing''' is a method of removing excess material from a '''job '''or a '''workpiece''' using a '''file.''' |
|- | |- | ||
| 01:02 | | 01:02 | ||
− | | There are various types of files for various requirements | + | | There are various types of '''files''' for various requirements |
|- | |- | ||
| 01:07 | | 01:07 | ||
− | | Flat file, for rectangular cross-section | + | | '''Flat file''', for rectangular cross-section |
|- | |- | ||
| 01:11 | | 01:11 | ||
− | | Smooth file : for getting smooth surfaces | + | |''' Smooth file ''': for getting smooth surfaces |
|- | |- | ||
| 01:15 | | 01:15 | ||
− | | Safe edge file : for filing the right angled part of the workpiece | + | | '''Safe edge file''' : for filing the right angled part of the '''workpiece''' |
|- | |- | ||
| 01:21 | | 01:21 | ||
− | | Square file : for developing square corners & square holes | + | | '''Square file''' : for developing square corners & square holes |
|- | |- | ||
| 01:27 | | 01:27 | ||
− | | Half run file : for filing semi-spherical surfaces | + | | '''Half run file''' : for filing semi-spherical surfaces |
|- | |- | ||
| 01:32 | | 01:32 | ||
− | | And Round file : for developing holes & round groves. | + | | And '''Round file''' : for developing holes & round groves. |
|- | |- | ||
| 01:38 | | 01:38 | ||
− | | Let’s us now learn the filing process. | + | | Let’s us now learn the '''filing''' process. |
|- | |- | ||
| 01:41 | | 01:41 | ||
− | | My requirement is a 5 by 3 inch workpiece. | + | | My requirement is a '''5 by 3 inch workpiece.''' |
|- | |- | ||
| 01:46 | | 01:46 | ||
− | | The job or the work-piece which I have is 5 by 4 inches. | + | | The '''job''' or the '''work-piece''' which I have is '''5 by 4 inches.''' |
|- | |- | ||
| 01:52 | | 01:52 | ||
− | | So let us first cut the excess 1 inch part. | + | | So let us first cut the excess '''1 inch''' part. |
|- | |- | ||
| 01:58 | | 01:58 | ||
− | | For this, apply the marking medium on the work-piece. | + | | For this, apply the '''marking medium''' on the '''work-piece.''' |
|- | |- | ||
| 02:03 | | 02:03 | ||
− | | You can use a chalk or ink as a marking medium. | + | | You can use a chalk or ink as a '''marking medium.''' |
|- | |- | ||
| 02:08 | | 02:08 | ||
− | | Once the medium is applied, mark the work-piece using a jenny | + | | Once the medium is applied, mark the '''work-piece''' using a '''jenny calliper''', as shown. |
|- | |- | ||
| 02:15 | | 02:15 | ||
− | | So, I am marking a little less than 1 inch according to my requirement. | + | | So, I am marking a little less than '''1 inch''' according to my requirement. |
|- | |- | ||
| 02:21 | | 02:21 | ||
− | | Next, use a punch and ball pein hammer to punch on the marked line. | + | | Next, use a '''punch''' and '''ball pein hammer''' to punch on the marked line. |
|- | |- | ||
| 02:28 | | 02:28 | ||
− | | After this, place the work-piece parallel to the jaws of the Vice. | + | | After this, place the '''work-piece''' parallel to the jaws of the '''Vice.''' |
|- | |- | ||
| 02:34 | | 02:34 | ||
− | | Now tighten it to hold the work-piece in place. | + | | Now tighten it to hold the '''work-piece''' in place. |
|- | |- | ||
| 02:38 | | 02:38 | ||
− | | This is so that we can cut the work-piece easily. | + | | This is so that we can cut the '''work-piece''' easily. |
|- | |- | ||
| 02:42 | | 02:42 | ||
− | | Next, take the hack saw and cut the excess portion of the work-piece. | + | | Next, take the '''hack saw''' and cut the excess portion of the '''work-piece.''' |
|- | |- | ||
| 02:48 | | 02:48 | ||
− | | Once the excess part is removed, measure the work-piece once again. | + | | Once the excess part is removed, measure the '''work-piece''' once again. |
|- | |- | ||
| 02:54 | | 02:54 | ||
− | | Yes, the measurement is proper now. I have 5 by 3 inches . | + | | Yes, the measurement is proper now. I have '''5 by 3 inches''' . |
|- | |- | ||
| 03:00 | | 03:00 | ||
− | | Now, let’s start filing. | + | | Now, let’s start '''filing.''' |
|- | |- | ||
| 03:02 | | 03:02 | ||
− | | First we have to select a suitable file. | + | | First we have to select a suitable '''file.''' |
|- | |- | ||
| 03:06 | | 03:06 | ||
− | | I need a smooth edge, so I will choose the Smooth file. | + | | I need a smooth edge, so I will choose the '''Smooth file.''' |
|- | |- | ||
| 03:11 | | 03:11 | ||
− | | Make sure that the handle of the file is securely fitted. | + | | Make sure that the '''handle''' of the '''file''' is securely fitted. |
|- | |- | ||
| 03:16 | | 03:16 | ||
− | | Do not use a file without a proper handle. | + | | Do not use a '''file''' without a proper '''handle. ''' |
|- | |- | ||
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| 03:22 | | 03:22 | ||
− | | Make sure that the file is clean before you start filing. | + | | Make sure that the '''file''' is clean before you start '''filing.''' |
|- | |- | ||
| 03:27 | | 03:27 | ||
− | | Using rusted files will damage the work-piece as well as bruise your hands. | + | | Using rusted '''files''' will damage the '''work-piece''' as well as bruise your hands. |
|- | |- | ||
| 03:34 | | 03:34 | ||
− | | So, now I have selected the proper file. | + | | So, now I have selected the proper '''file.''' |
|- | |- | ||
| 03:38 | | 03:38 | ||
− | | Next step is to place the work-piece securely in the Bench vice once again. | + | | Next step is to place the '''work-piece''' securely in the '''Bench vice''' once again. |
|- | |- | ||
| 03:45 | | 03:45 | ||
− | | Position yourself at 90 degree perpendicular to the Bench vice. | + | | Position yourself at '''90 degree''' perpendicular to the '''Bench vice.''' |
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| 03:57 | | 03:57 | ||
− | | This is the best position for filing. | + | | This is the best position for '''filing.''' |
|- | |- | ||
| 04:00 | | 04:00 | ||
− | | Now hold the handle of the file firmly in your right hand. | + | | Now hold the '''handle''' of the '''file''' firmly in your right hand. |
|- | |- | ||
| 04:05 | | 04:05 | ||
− | | With your left hand, hold the tip of the file as shown. | + | | With your left hand, hold the tip of the '''file''' as shown. |
|- | |- | ||
| 04:10 | | 04:10 | ||
− | | Ensure that, the right thumb is pressing the handle of the file firmly. | + | | Ensure that, the right thumb is pressing the '''handle''' of the '''file''' firmly. |
|- | |- | ||
| 04:15 | | 04:15 | ||
− | | Now we are ready to start filing. | + | | Now we are ready to start '''filing.''' |
|- | |- | ||
| 04:18 | | 04:18 | ||
− | | There are three methods of filing. They are : | + | | There are three methods of '''filing.''' They are : |
|- | |- | ||
| 04:21 | | 04:21 | ||
− | | Straight forward filing | + | | '''Straight forward filing''' |
|- | |- | ||
| 04:23 | | 04:23 | ||
− | | Draw filing | + | | '''Draw filing''' |
|- | |- | ||
| 04:25 | | 04:25 | ||
− | | Diagonal or cross filing. | + | | '''Diagonal''' or '''cross filing.''' |
|- | |- | ||
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|- | |- | ||
| 04:30 | | 04:30 | ||
− | | Moving the file lengthwise across the surface of the work-piece is called Straight forward filing. | + | | Moving the '''file''' lengthwise across the surface of the '''work-piece''' is called '''Straight forward filing.''' |
|- | |- | ||
| 04:38 | | 04:38 | ||
− | | In this method, the filing is done by moving the file up & down slowly. | + | | In this method, the '''filing''' is done by moving the '''file''' up & down slowly. |
|- | |- | ||
| 04:44 | | 04:44 | ||
− | | You can see that your work-piece is getting filed and the excess material is being removed. | + | | You can see that your '''work-piece''' is getting '''filed''' and the excess material is being removed. |
|- | |- | ||
| 04:51 | | 04:51 | ||
− | | In Draw filing method, the file is pulled towards the body with an even pressure. | + | | In '''Draw filing''' method, the '''file''' is pulled towards the body with an even '''pressure.''' |
|- | |- | ||
| 04:58 | | 04:58 | ||
− | | In Diagonal filing method, the file is moved diagonally over the surface of the work-piece. | + | | In '''Diagonal filing''' method, the '''file''' is moved diagonally over the surface of the '''work-piece.''' |
|- | |- | ||
| 05:06 | | 05:06 | ||
− | | The movement of the file is from one corner of the work-piece to another, diagonally. | + | | The movement of the '''file''' is from one corner of the '''work-piece''' to another, diagonally. |
|- | |- | ||
| 05:13 | | 05:13 | ||
− | | Once the filing is done, we have to check the flatness & squareness of the work-piece surface. | + | | Once the '''filing''' is done, we have to check the '''flatness''' & '''squareness''' of the '''work-piece''' surface. |
|- | |- | ||
| 05:21 | | 05:21 | ||
− | | This is done with the help of Try-Square & Vernier | + | | This is done with the help of '''Try-Square''' & '''Vernier calliper.''' |
|- | |- | ||
| 05:26 | | 05:26 | ||
− | | To check whether the flatness is proper, place the Try-square on the work-piece as shown. | + | | To check whether the '''flatness''' is proper, place the '''Try-square''' on the '''work-piece''' as shown. |
|- | |- | ||
| 05:33 | | 05:33 | ||
− | | Do so at 3 different places on the work-piece. | + | | Do so at 3 different places on the '''work-piece.''' |
|- | |- | ||
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|- | |- | ||
| 05:41 | | 05:41 | ||
− | | This is a clear indication of flatness. | + | | This is a clear indication of '''flatness.''' |
|- | |- | ||
| 05:44 | | 05:44 | ||
− | | If the surface is uneven, then you will see light rays between the work-piece and the Try-square. | + | | If the surface is uneven, then you will see light rays between the '''work-piece''' and the '''Try-square.''' |
|- | |- | ||
| 05:52 | | 05:52 | ||
− | | In such cases, you will need to file again. | + | | In such cases, you will need to '''file''' again. |
|- | |- | ||
| 05:57 | | 05:57 | ||
− | | Next we will check the squareness of the work-piece by using the Try-square. | + | | Next we will check the '''squareness''' of the '''work-piece''' by using the '''Try-square.''' |
|- | |- | ||
| 06:03 | | 06:03 | ||
− | | Keep the Try-square on the corner of the work-piece, as shown. | + | | Keep the '''Try-square''' on the corner of the '''work-piece''', as shown. |
|- | |- | ||
| 06:07 | | 06:07 | ||
− | | Now touch the edges of the Try-square on two adjacent sides of the work-piece, like this. | + | | Now touch the edges of the '''Try-square''' on two adjacent sides of the '''work-piece''', like this. |
|- | |- | ||
| 06:14 | | 06:14 | ||
− | | Check whether the adjacent sides of the work-piece are at 90 degrees to each other. | + | | Check whether the adjacent sides of the '''work-piece''' are at 90 degrees to each other. |
|- | |- | ||
| 06:20 | | 06:20 | ||
− | | If not, then file again. | + | | If not, then '''file''' again. |
|- | |- | ||
| 06:23 | | 06:23 | ||
− | | Another measurement that we need to do is to check the thickness of the work-piece. | + | | Another measurement that we need to do is to check the thickness of the '''work-piece.''' |
|- | |- | ||
| 06:29 | | 06:29 | ||
− | | For this, we have to use a Vernier | + | | For this, we have to use a '''Vernier calliper.''' |
|- | |- | ||
| 06:33 | | 06:33 | ||
− | | Place the work-piece within the jaws of the Vernier | + | | Place the '''work-piece''' within the jaws of the '''Vernier calliper,''' as shown. |
|- | |- | ||
| 06:38 | | 06:38 | ||
− | | Measure the thickness of the work-piece. | + | | Measure the thickness of the '''work-piece.''' |
|- | |- | ||
| 06:41 | | 06:41 | ||
− | | Now repeat this | + | | Now repeat this at least on three different locations on the '''work-piece.''' |
|- | |- | ||
| 06:47 | | 06:47 | ||
− | | Identical measurement indicates that the work-piece is even in thickness. | + | | Identical measurement indicates that the '''work-piece''' is even in thickness. |
|- | |- | ||
| 06:53 | | 06:53 | ||
− | | Now its time to learn what not to do while filing. | + | | Now its time to learn what not to do while '''filing.''' |
|- | |- | ||
| 06:57 | | 06:57 | ||
− | | Do not file a work-piece at an angle | + | | Do not file a '''work-piece''' at an angle |
|- | |- | ||
| 07:00 | | 07:00 | ||
− | | Do not file a work-piece at both the edges skipping the centre. | + | | Do not file a '''work-piece''' at both the edges skipping the centre. |
|- | |- | ||
Line 373: | Line 369: | ||
|- | |- | ||
| 07:12 | | 07:12 | ||
− | | To Measure a workpiece | + | | To Measure a '''workpiece''' |
|- | |- | ||
| 07:14 | | 07:14 | ||
− | | Remove the excess part of the workpiece | + | | Remove the excess part of the '''workpiece''' |
|- | |- | ||
| 07:17 | | 07:17 | ||
− | | File a workpiece | + | | File a '''workpiece''' |
|- | |- | ||
| 07:20 | | 07:20 | ||
− | | The video at the link shown | + | | The video at the link shown summarises the Spoken Tutorial project. Please download and watch it. |
|- | |- |
Latest revision as of 10:46, 10 March 2017
Time | Narration |
00:00 | Hello and welcome to the Spoken Tutorial on Filing a Workpiece |
00:07 | In this tutorial, we will learn, |
00:10 | What is filing? |
00:12 | Various tools used for filing |
00:15 | Different types of filing |
00:17 | How to file a workpiece |
00:22 | And common mistakes while filing |
00:24 | For this tutorial we require |
00:27 | A file, The workpiece to be filed |
00:31 | Bench Vice to hold the workpiece |
00:34 | Vernier Calliper to measure |
00:37 | Try Square to check the workpiece's squareness |
00:42 | Hack saw to cut the workpiece |
00:45 | Punch to mark on the workpiece |
00:48 | And a Ball pein hammer |
00:51 | First let's see, what is filing. |
00:54 | Filing is a method of removing excess material from a job or a workpiece using a file. |
01:02 | There are various types of files for various requirements |
01:07 | Flat file, for rectangular cross-section |
01:11 | Smooth file : for getting smooth surfaces |
01:15 | Safe edge file : for filing the right angled part of the workpiece |
01:21 | Square file : for developing square corners & square holes |
01:27 | Half run file : for filing semi-spherical surfaces |
01:32 | And Round file : for developing holes & round groves. |
01:38 | Let’s us now learn the filing process. |
01:41 | My requirement is a 5 by 3 inch workpiece. |
01:46 | The job or the work-piece which I have is 5 by 4 inches. |
01:52 | So let us first cut the excess 1 inch part. |
01:58 | For this, apply the marking medium on the work-piece. |
02:03 | You can use a chalk or ink as a marking medium. |
02:08 | Once the medium is applied, mark the work-piece using a jenny calliper, as shown. |
02:15 | So, I am marking a little less than 1 inch according to my requirement. |
02:21 | Next, use a punch and ball pein hammer to punch on the marked line. |
02:28 | After this, place the work-piece parallel to the jaws of the Vice. |
02:34 | Now tighten it to hold the work-piece in place. |
02:38 | This is so that we can cut the work-piece easily. |
02:42 | Next, take the hack saw and cut the excess portion of the work-piece. |
02:48 | Once the excess part is removed, measure the work-piece once again. |
02:54 | Yes, the measurement is proper now. I have 5 by 3 inches . |
03:00 | Now, let’s start filing. |
03:02 | First we have to select a suitable file. |
03:06 | I need a smooth edge, so I will choose the Smooth file. |
03:11 | Make sure that the handle of the file is securely fitted. |
03:16 | Do not use a file without a proper handle. |
03:19 | You will end up injuring your hands. |
03:22 | Make sure that the file is clean before you start filing. |
03:27 | Using rusted files will damage the work-piece as well as bruise your hands. |
03:34 | So, now I have selected the proper file. |
03:38 | Next step is to place the work-piece securely in the Bench vice once again. |
03:45 | Position yourself at 90 degree perpendicular to the Bench vice. |
03:51 | Place your left leg in the front & right leg at the back. |
03:57 | This is the best position for filing. |
04:00 | Now hold the handle of the file firmly in your right hand. |
04:05 | With your left hand, hold the tip of the file as shown. |
04:10 | Ensure that, the right thumb is pressing the handle of the file firmly. |
04:15 | Now we are ready to start filing. |
04:18 | There are three methods of filing. They are : |
04:21 | Straight forward filing |
04:23 | Draw filing |
04:25 | Diagonal or cross filing. |
04:28 | Let’s see them one by one. |
04:30 | Moving the file lengthwise across the surface of the work-piece is called Straight forward filing. |
04:38 | In this method, the filing is done by moving the file up & down slowly. |
04:44 | You can see that your work-piece is getting filed and the excess material is being removed. |
04:51 | In Draw filing method, the file is pulled towards the body with an even pressure. |
04:58 | In Diagonal filing method, the file is moved diagonally over the surface of the work-piece. |
05:06 | The movement of the file is from one corner of the work-piece to another, diagonally. |
05:13 | Once the filing is done, we have to check the flatness & squareness of the work-piece surface. |
05:21 | This is done with the help of Try-Square & Vernier calliper. |
05:26 | To check whether the flatness is proper, place the Try-square on the work-piece as shown. |
05:33 | Do so at 3 different places on the work-piece. |
05:38 | Check this against a light source. |
05:41 | This is a clear indication of flatness. |
05:44 | If the surface is uneven, then you will see light rays between the work-piece and the Try-square. |
05:52 | In such cases, you will need to file again. |
05:57 | Next we will check the squareness of the work-piece by using the Try-square. |
06:03 | Keep the Try-square on the corner of the work-piece, as shown. |
06:07 | Now touch the edges of the Try-square on two adjacent sides of the work-piece, like this. |
06:14 | Check whether the adjacent sides of the work-piece are at 90 degrees to each other. |
06:20 | If not, then file again. |
06:23 | Another measurement that we need to do is to check the thickness of the work-piece. |
06:29 | For this, we have to use a Vernier calliper. |
06:33 | Place the work-piece within the jaws of the Vernier calliper, as shown. |
06:38 | Measure the thickness of the work-piece. |
06:41 | Now repeat this at least on three different locations on the work-piece. |
06:47 | Identical measurement indicates that the work-piece is even in thickness. |
06:53 | Now its time to learn what not to do while filing. |
06:57 | Do not file a work-piece at an angle |
07:00 | Do not file a work-piece at both the edges skipping the centre. |
07:05 | With this we come to the end of this tutorial. |
07:08 | Let us summarise, In this tutorial, we have learnt |
07:12 | To Measure a workpiece |
07:14 | Remove the excess part of the workpiece |
07:17 | File a workpiece |
07:20 | The video at the link shown summarises the Spoken Tutorial project. Please download and watch it. |
07:27 | The Spoken Tutorial Project Team conducts workshops and gives certificates to those who pass our online test. |
07:35 | For more details, please write to us. |
07:38 | Spoken Tutorial Project is supported by the NMEICT, MHRD, Government of India. |
07:45 | More information on this Mission is available at this link. |
07:51 | This tutorial has been created exclusively for the National Instructional Media Institute, Chennai |
07:59 | The script for this tutorial has been contributed by Praveen and |
08:03 | This is Nancy Varkey from IIT Bombay signing off. |
08:07 | Thanks for joining us. |