In this article, I am going to discuss the Lathe machine in detail. Boring Machines Boring operations can be performed on other than boring machines, such as lathes, milling machines and machining centers. Professionals, Teachers, Students and Kids Trivia Quizzes to . These short objective type questions with answers are very important for competitive exams as well as Board exams. Set the depth of cut as per your requirement. Lathe machine are of different types according the types of work performed. You can read more about milling machine attachment here. The tool that we attach to the lathe machine to perform a particular operation on the job is known as a tool/cutting tool. Like cutting speed, depth of cut is also an important parameter for the boring bar. 5. Drilling. These short solved questions or quizzes are provided by Gkseries. Facing. Counter Boring Counter boring is the operation of enlarging the end of the hole through a certain distance. Boring a hole in more than one diameter on the same axis is called counter boring. 29. b. perpendicular to the axis of rotation of workpiece. The boring machines come in a large variety of styles and sizes. Boring is a cutting process that involves the use of a single-point cutting tool or boring head to enlarge an existing hole in a workpiece. OPERATIONS IN DRILLING MACHINE 37. The cutting edges of the counter-bore (tool used for counter boring) may have straight or spiral teeth. Centre lathe 3. Grooving is often worked with round parts, while slot machined on rectangular plates. . Drilling is a material-removing or cutting process in which the tool uses a drill bit to cut a hole of circular cross-section in solid materials. This operation is performed by boring tool. A user will have the option to hand feed the machine while facing, or use the power feed option. Counter Boring Operation Before counter boring be sure that the pilot on the counter bore will fit into the drilled hole.The cutting edges o f the . Boring Machine. The lathe is used for following operations: 1.Turning 2.Taper turning 3.Step turning 4.External thread cutting 5.Internal thread cutting 6.Drilling 7.Boring 8.counter boring 9.reaming operations. Boring operations on small workpieces can be carried out on a lathe while larger workpieces are machined on boring mills. Several types of chucks are there like 4 jaw chuck, 3 jaw chuck and so on. Grooving. to within 0.001" of target size). Counter boring is an operation in which a cylindrical pre-drilled hole is enlarged so that the fasteners (like screw, bolt, etc) can be set with or below the workpiece surface. Drilling is basically a technology of creating holes. These short objective type questions with answers are very important for competitive exams as well as Board exams. Counter boring tool in the lathe machinery performs the operation of expanding the original hole bored. A machine is a mechanical structure that uses power or hand to shape or form parts made of metal or other materials. 4. The same result is carried out in some machines by holding the drill stationary and rotating the work as on the lathe. It is performed by a boring tool. Lathe Machines 4. boring: Boring is an operation to enlarge and finish holes accurately. Slotting machines etc. #22) Tapping Tapping operation is a machining process in which threads are made in the internal part of a drilled hole, so that a bolt can be easily fixed in the threads. Milling Machines 2. COUNTER BORE AND SPOT FACING 36. 2. It is basically done to provide space to bolts, studs etc. Bore depths greater than 100 times the tool diameter. Basic principle of a lathe machine : Lathe machines are normally used to produce cylindrical surfaces. Taper turning. These centers support the job and hold it firmly in place. Boring operations on turning machines are generally less complicated than boring operations on milling machines. Turning. Refer this article for more details on drilling machine operations. 10. A facing operation is performed on which one of the following machine tools: (a) Drill press, (0) shaper? Drilling machines, 7. The large mobile rig and its support equipment may cost $25,000-$50,000 per day; therefore the soil boring may be quite expensive. Counter boring: Counter boring is the operation of enlarging one end of an existing hole concentric with the original hole with square bottom. ANSWER: Apron. This is the most common machining process, one estimate is that 75% of all metal cutting material removed comes from the drilling operation. Special boring machines of various designs are used for boring workpieces that are too large to be mounted on a lathe, drill press, or milling machine. 6. The same program can be used to bore jaws as well. With lathes, the boring tool is moved incrementally by the machine whereas with mills, the boring tool (boring head) must be adjusted to achieve the desired hole size. ; For example engine frames, steam engine, cylinders, machine housings, etc. The boring machine is one of the most versatile machine tools basically used to bore holes in large and heavy parts practically impossible to hold and rotate in an engine lathe or a drilling machine. Boring is an operation to enlarge and finish holes accurately. All above Operations either performed on gang drill machine . Here is the step by step process to perform the facing operation: First, clamp your workpiece on the lathe chuck, and move your cutting tool near the end surface of the workpiece. Facing. Lathe Machine. Dressing: This is the first operation performed on the workpiece. 5. Operations like Turning, facing, grooving, Knurling, threading and more, such operations are performed on this type of machine. Ans. Drawing/Image CNC Program % N10 T04 M06 The various operations that we perform on the lathe are: 1. The most common type of lathe operations are a follows. Drilling operation is the drill bit is fixed at tail stock spindle after give feed by using tail stock handle. 3. The milling machine lathe attachment is attachable to an existing milling machine to eliminate the need for an operator owning both a milling machine and a lathe. A lathe is a machine tool which is used to rotate a workpiece to perform various operations such as turning, facing, knurling, grooving etc., with the help of tools that are applied to the workpiece. Grinders, 8. Multiple drills and counter sinks as well as counter bore. Boring Machine. A cutting tool is moved along the work to produce cylindrical shapes (turning), or across the work to form flat surfaces (facing). Groove usually in cylindrical cutout, slot tends to be a flat and narrow hole with straight edges. All the tool movement are named in the drawing. INTRODUCTION: In the Mechanical Engineering field Lathe machine plays an important role in Manufacturing. Lathe Machine • A lathe machine is a machine tool that removes the undesired material from a rotating work piece in the form of chips with the help of a tool that is traversed across the work and can be feed deep into the work • It one of the most versatile and widely used machine tools all over the world. Automatic lathe The tool will then feed perpendicularly across the part's rotational axis as it spins in the jaws of the chuck. The variation of tool ends and a kinematic relation between the tool and workpiece results in different operations on a lathe. These short solved questions or quizzes are provided by Gkseries. Counter boring is when another drill bit of larger size than the first will be used to open a wider hole. 7. The most common lathe operations are turning, facing, grooving, parting, threading, drilling, boring, knurling, and tapping. A lathe is a machine that rotates the workpiece about an axis of rotation to perform various operations such as turning, undercutting, knurling, drilling, facing, boring, and cutting, with lathe cutting tools that are applied to the workpiece to create an object with symmetry about that axis. LATHE PARTS AND FUNCTIONS WHAT IS A LATHE? Read: Understanding lathe machine Counter boring. 1. of operations can be performed. 5. (o) planming, and turning? This includes - speed lathe, engine lathe, tool-room lathe, special . 4. Bench lathe 8. In a lathe machine, for the boring bar, it is twice the corner radius, which is considered as the maximum safe depth of cut. Step 0: Understand EVERYTHING Matters Boring Machines 3. Drilling multiple diameters. The job rotates about its own axis. Machining Operations. Drill and Chamfer. Drilling is performed by holding the work by a chuck. Turning B. Grinding C. Boring D. Counter-boring. ; For example engine frames, steam engine, cylinders, machine housings, etc. Lathe Machine • A lathe machine is a machine tool that removes the undesired material from a rotating work piece in the form of chips with the help of a tool that is traversed across the work and can be feed deep into the work • It one of the most versatile and widely used machine tools all over the world. The cutting edge of the tool should set to the same height as the centre of the workpiece. Counter - boring. Counter Boring. Drilling, Reaming, Tapping, Boring, counter-boring, countersinking, and spot facing are drilling machine manufacturing operations. Stock removal up to 50.80 mm (2.000″) per side depending on tool size. Boring. By admin Counter boring: Counter boring is the operation of enlarging one end of an existing hole concentric with the original hole with square bottom. Discussion. Boring machines, like most other machine tools, can be classified as horizontal or vertical. broaching Lathe Machine Operations. Most common types of lathe machine is a central lathe or it is also called as Engine lathe. A lathe machine is a machine tool that removes the undesired material from a rotating workpiece in the form of chips with the help of a tool that is traversed across the work and can be feed deep into the work. Simple Boring Operation CNC Lathe Program Example Submit by: BEATA Summary Very simple and basic cnc program example which shows how a simple cnc lathe program can be made to bore a component. Counter Boring. Drilling Machine Main Parts: Types of lathe: 1.Engine lathe 2.turret and capston lathe 3.Bench lathe 4.Tool room . That is called lathe. drilling, spot boring cycle : G82 : drilling, counter boring cycle : G83 : peck drilling cycle : G84 : tapping cycle : G84.2 : rigid tap cycle : G84.3 : rigid counter tap cycle : G85 : boring cycle : G86 : Boring Cycle Tool Retraction with Rapid Traverse : G87 : Boring Cycle/Back Boring Cycle : G88 : Boring Cycle (Manual Operation on the Bottom . with tools that are applied to the work-piece Lathe machine 5. _____ operation is done to sharpen scissors A. Grinding B. - Parting: The process of cutting a workpiece into two parts is called as parting. Drilling → Counter-boring Knurling Knurling is the operation of producing a straight-lined, diamond-shaped pattern or cross lined pattern on a cylindrical external surface by pressing a tool called knurling tool. It is said to be used of counterbore when the operation is done on drilling machine. Boring machines. A lathe is a machine tool which rotates the work-piece on its axis to perform various operations such as cutting, knurling, drilling, Thread cutting etc. It is designed to be mounted to the side of the milling machine and to be used without disturbing a setup in the associated vise. For this operation, regular turning tool or facing tool may use. Reduce diameter of shafts B. A lathe is used to perform which of the following machining operations ( answers) (o Counter boring broaching, (e) drilling )milling. Boring Operation is a cutting process that involves the use of a single-point cutting tool or boring head to enlarge an existing hole in a workpiece.This is in stark contrast to drilling which is performed to create an initial hol e in a workpiece. Counter Boring: A counter bore tool enters the workpiece axially and enlarges the top portion of an existing hole to the diameter of the tool.Counter boring is often performed after drilling to provide space for the head of a fastener, such as a bolt, to sit below the surface of a part. It is done to accommodate the heads of bolts, studs and pins. Drilling related operations are explained below. Using lathe machine, no. This approach should generally be avoided if other means are available for making a boring. * Rough drill hole for c-bore. a) true. 5. Counter boring Tool. 4. A lathe is a machine tool which is used to rotate a workpiece to perform various operations such as turning, facing, knurling, grooving etc., with the help of tools that are applied to the workpiece. The drill bits are also called as Multi-point cutting tools which can have their rapid impact on the Material Removal Rate (MRR) i.e. Facing. centre drilling. 28. Boring is a machine operation in which the work is in contact with a single point tool. This operation of reducing a flat surface on the end of the workpiece. Types of lathe 1.Engine lathe 2. 9. This includes - speed lathe, engine lathe, tool-room lathe, special . Center or Engine Lathe Machine is the most widely used lathe machine and still, it is, in every workshop, this machine is present. 30. Knurling. Lathe or CNC lathe is a machine usually used to produce turned parts, shaping different materials into desired shapes. This is in stark contrast to drilling, which is performed to create an initial hole in a workpiece. In the CNC turning process, the lathe cutting tool is fed to the rotary workpiece that held in a chuck and removing excess materials from the block.A lathe machine can also perform lots of other operations, including facing, hard turning, parting, grooving, knurling, drilling . Your part looks plenty big enough to do pretty easily. Ans. Grinding machines are used to _____ A. OPERATIONS IN DRILLING MACHINE 35. A lathe is used for many operations such as turning, threading, facing, grooving, Knurling, Chamfering, centre drilling. 1. Explanation: No explanation is available for this question! Ans. The lathe is a versatile machine tool in which the work is held and rotated. Subject - Manufacturing ProcessesChapter - Drilling Operations: Drilling, Reaming, Boring, Counter Sinking, Counter Boring, Counter Sinking, Spot Facing, Tap. Broaching is an operation that completes the cutting in one . Turret lathe 6. (40 to 60 rpm) and plenty of cutting fluid. Drilling Machine: It is a machine which is used to drill the holes on the components or workpiece with the help of drill bits. The speed of the work can be varied to suit different diameters, operations or materials. Turning Turning is the most common lathe machining operation. Generate holes C. Generate threads D. None of the above. 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