 Hello everyone, myself Professor Prithish Chittay working as an assistant professor in Mechanical Engineering Department in Vulture and Stop Technology solver. So welcome to the second session regarding the milling machine. Today we are discussing one type of milling machine that is the vertical milling machine and also we are discussing the milling attachment. This is regarding the course Manufacturing Technology. Now before starting the explanation regarding the vertical milling machine. So what you are learning? So the students will be able to learn and explain the different types of milling attachment and also how the vertical milling machine will be working. So these are the contents first we will discuss. So what we are learning in the session one after that the vertical milling machine and the milling attachments, different milling attachments. So here, so this is the working principle, here you can see the milling cutter that is mounted on the arbor that is keyed here that is keyed with the help of a square or may be the rectangular key. The work table, this is the work table that can be having the horizontal direction movement. On the work table the work piece can be mounted, the irregular type of work piece that can be mounted here on the work table. So whenever there is a relative motion between the milling cutter and the work piece, yes there will be the chip removal process, yes here the direction of the rotation of the milling cutter is same as the feed or the movement of the work piece, yes here the milling cutter is moving in this direction that is in the anticlockwise direction and also the work piece is moving in this direction. So the movement of the milling cutter and the work piece is in the same direction. So whenever the milling cutter is having the contact with the work piece at that point yes this is the point. So at that point there will be the chip removal process. So this is the horizontal milling machine so which consists of different components like the work table to provide the movement for the work table there is a feed handle. Suppose you want to provide the may be the horizontal direction movement yes you can use the feed handle. If suppose you want to provide the vertical movement for the work table yes you can use the knee here and there is a handle with the help of which you can provide the movement vertical movement for the work table or the work piece. After that where we can mount the work piece for example in the lathe machine if suppose you are having the cylindrical type of work piece we can mount the work piece we can place the work piece in may be the 3 jaw jack or may be the 4 jaw jack. Here similarly in the milling machine you can place the work piece inside the vice that is the machine vice yes after that means your work piece or the work table can be having the movement in the horizontal direction or may be the vertical direction. After that it consists of the milling cutter as we have discussed in the working principle of the milling machine whenever there will be the relative movement between the milling cutter and the work piece yes there will be the chip removal process. So where the milling cutter is mounted that is on the arbor, arbor is having the arbor bracket the one end of the arbor that is fixed to the arbor bracket and another end of the arbor that is fixed to the column this is the column these are the switches and to provide the support to the arbor and the arbor bracket there is a over arm. So this is how the horizontal milling machine will work after that. Now in our today's session we are discussing the vertical milling machine there are the two cases in the vertical milling machine or there are the two types of vertical milling machine. So first case that we will discuss that is vertical milling machine with the fixed head. So this is the fixed head so this cannot be providing any rotation here it consists of first we will see the different components of the vertical milling machine. So this is the column this is the base or it will be act as unworkable sometimes if suppose your work piece is very large you can place your work piece on the floor also you can place your work piece on the floor also and you can provide the cutting operation with the help of the we can call it as the milling cutter. You can see there is a knee this is the screw jack yes there is a handle you can provide it here the screw jack you can suppose you want to provide the vertical direction to the knee or the work table or the work piece yes with the help of screw jack though you can take the work piece in the vertical direction with the help of knee. How the knee can be moving in the vertical direction in the guideways that is provided on the column yes just I will mark that particular guideways here so that you can easily understood yes where are the guideways here you can see these are the guideways yes these are the guideways you can see here and in those guideways the knee can be moving in the upward direction or the downward direction on the knee yes there is a saddle the saddle can be moving in the horizontal direction like this to the right side or to the left side suppose you want to provide the vertical movement for the work piece yes there is a knee or the screw jack yes with the help of which you can provide the vertical direction movement on the saddle you can fix the work table and on the work table yes you can fix the work piece and there is a milling cutter here yes you can see there is a milling cutter here and the milling cutter that is fixed to the here you can see that is the spindle or this is also called as arbor this is also called as arbor. Arbor is the tool holding device for the milling cutter in the milling machine and the spindle or the arbor that is fixed to the this particular head this is the spindle head that is fixed is suppose you want to provide the rotation to the spindle or may be the cutter you have to use the swiveling head that will be our next case so this is the working principle or how the vertical milling machine with fixed head that will be working after that. So this is the another case in the vertical milling machine vertical milling machine with swiveling head this is very much similar to the first case that we have discussed already that is vertical milling machine with fixed head where your spindle that will be fixed but here you can provide the rotation to the milling cutter. So this will be the advantage having the swiveling head in the vertical milling machine with respect to the milling cutter now what it consists of it consists of the column yes it consists of the base or this is also called as a we can call it as the table or the base for the for example the screw jack or the knee this is the supporting part after that it is consist of it consists of the screw jack suppose you want to provide the vertical movement for example the work table or the work piece yes the screw jack will be working so with the help of screw jack the knee can be having the vertical movement yes you can see here after that the knee how the knee will be having the vertical direction movement so they are the provision of the guideways yes you can see I will just mark that particular guideways with the help of which the knee can be having the vertical movement so my statement will be the knee will be having the vertical movement with respect to the guideways after that so there is a sideways or there is a we can called as the saddle that is placed on the the upper part of the knee yes this is the saddle the saddle can be moving in the horizontal direction to the maybe the right hand side or to the left hand side yes also there are the the guideways which are present on the upper surface of the knee so that the saddle can be moving in the horizontal direction on the saddle the table and the work piece will be placed yes after that there is a milling cutter and the spindle which is also called as the arbor so on the arbor your cutter milling cutter will be attached now this is the most important part this is the most important part so the swiveling head you can see the graduations or the marking on the swiveling head so suppose suppose you want to take the angular cut on the work piece so this swiveling head can be having the rotation like this can be having the rotation like this suppose you want to take maybe the 15 degrees cut or maybe the 30 degrees cut yes with respect to these marking or the graduations yes you can provide the angular cut with the help of swiveling head because this swiveling head that is attached to the cutter so after providing the angle to the swiveling head or the cutter yes you can take the angular cuts on the work piece so this is the advantage of the vertical milling machine with swiveling head after that so there is one question in front of you what are the components of vertical milling machine that just we had already discussed you can discuss with your friends just think about this question so these are the attachments like the arbor that is the arbor is the tool holding device so how it will look like yes suppose you want to hold the cutting tool in this particular hole yes there is a this particular engaging dock yes just rotate this engaging dock after this is the arbor with the help of which you can hold the different types of milling cutters the plane wise and the swiveling wise like the wise is the job holding device yes in front of you there is a schematic diagrams yes with the help of swiveling wise you can have the rotation to the work piece this is a plane wise that is that will be stationary yes you cannot rotate the plane wise with respect to your work piece because there is no swiveling plate here there is a swiveling plate yes you can see here there is a swiveling plate here yes with the help of which you can rotate that particular wise to the work piece yes so these are the references thank you