Drill bits are usually positioned either on a tailstock or a lathe tool holder. Reaming is a sizing operation that enlarges the hole in the workpiece.
In reaming operations, reamer enters the workpiece axially through the end and expands an existing hole to the diameter of the tool. Reaming removes a minimal amount of material and is often performed after drilling to obtain both a more accurate diameter and a smoother internal finish. In boring operation, a tool enters the workpiece axially and removes material along the internal surface to either create different shapes or to enlarge an existing hole.
Tapping is the process in which a tapping tool enters the workpiece axially and cuts the threads into an existing hole. The hole matches a corresponding bit size that can accommodate the desired tapping tool. Tapping is also the operation used to make a thread on nuts. Lathes are capable of machining pieces with sophisticated features. The final part features are produced by the utilization of various tools and by changing the kinematical relationship between the cutter and a workpiece.
In this article, we explained ten different lathe operations. We at Turntech Precision provide the top quality parts machined on the Swiss-type lathes utilizing turning, facing, grooving, threading, knurling, boring, and tapping operations. We work closely with our customers to provide them with the best solution to their engineering problems in a variety of industries.
Contact us today with your inquiries. Our Story. Turning Turning is the most common lathe machining operation. Step Turning Step turning creates two surfaces with an abrupt change in diameters between them.
Working Principle : The lathe is a machine tool which holds the workpiece between two rigid and strong supports called centers or in a chuck or face plate which revolves. The cutting tool is rigidly held and supported in a tool post which is fed against the revolving work. The normal cutting operations are performed with the cutting tool fed either parallel or at right angles to the axis of the work.
The cutting tool may also be fed at an angle relative to the axis of work for machining tapers and angles. Construction : The main parts of the lathe are the bed, headstock, quick changing gear box, carriage and tailstock. Bed : The bed is a heavy, rugged casting in which are mounted the working parts of the lathe. It carries the headstock and tail stock for supporting the workpiece and provides a base for the movement of carriage assembly which carries the tool.
Legs : The legs carry the entire load of machine and are firmly secured to floor by foundation bolts. Headstock : The headstock is clamped on the left hand side of the bed and it serves as housing for the driving pulleys, back gears, headstock spindle, live centre and the feed reverse gear. The headstock spindle is a hollow cylindrical shaft that provides a drive from the motor to work holding devices.
Gear Box : The quick-change gear-box is placed below the headstock and contains a number of different sized gears. Carriage : The carriage is located between the headstock and tailstock and serves the purpose of supporting, guiding and feeding the tool against the job during operation.
The main parts of carriage are:. The saddle is an H-shaped casting mounted on the top of lathe ways. It provides support to cross-slide, compound rest and tool post. The cross slide is mounted on the top of saddle, and it provides a mounted or automatic cross movement for the cutting tool. The compound rest is fitted on the top of cross slide and is used to support the tool post and the cutting tool.
The tool post is mounted on the compound rest, and it rigidly clamps the cutting tool or tool holder at the proper height relative to the work centre line. The apron is fastened to the saddle and it houses the gears, clutches and levers required to move the carriage or cross slide. The engagement of split nut lever and the automatic feed lever at the same time is prevented she carriage along the lathe bed.
Tailstock : The tailstock is a movable casting located opposite the headstock on the ways of the bed. The tailstock can slide along the bed to accommodate different lengths of workpiece between the centers.
A tailstock clamp is provided to lock the tailstock at any desired position. The tailstock spindle has an internal taper to hold the dead centre and the tapered shank tools such as reamers and drills. The engine lathe is an accurate and versatile machine on which many operations can be performed.
These operations are:. A lathe is a machine that rotates the piece on the axis in order to perform various operations like cutting, facing, knurling, deformation and more.
Metal spinning, thermal spraying, woodturning and metalworking are the common operations performed with a lathe machine. One can even shape pottery with this working wonder. Whatever material used in lathe machine whether metal or wood is molded first. The most commonly used lathes are the woodworking lathes. The wood piece is placed in between the headstock and the tailstock of the lathe. The products produced with the help of the lathe machine are cue sticks, musical instruments, candlestick holders, table legs, baseball bats, gun barrels, camshafts, bowls, crankshafts and much more.
There are plenty of lathe that vary in sizes and shapes according to the work to be done. The general operations done with the lathe are grooving, turning, cutting, sanding and etc. Additionally, it can support the end of the workpiece using a center and can be adjusted to adapt to different workpiece lengths.
As always we should be aware of safety requirements and attempt to observe safety rules in order to eliminate serious injury to ourselves or others. Wear glasses, short sleeves, no tie, no rings, no trying to stop the work by hand.
Stop the machine before trying to check the work. Remove the chuck key from the chuck immediately after use. Do not turn the lathe on if the chuck is still in the chuck key. Move the tool bit to a safe distance from the chuck, collet, or face plate when inserting or removing your part.
Place the tool post holder to the left of the compound slide. This will ensure that the compound slide will not run into the spindle or chuck attachments. When installing and removing chucks, face plates, and centers, always be sure all mating surfaces are clean and free from burrs. Clamp the tool bit as short as possible in the tool holder to prevent it from vibrating or breaking.
If any filing is done on work revolving in the lathe, file left handed to prevent slipping into the chuck. Make sure that the tailstock is locked in place and that the proper adjustments are made if the work is being turned between centers. Use care when cleaning the lathe. The cutting tools are sharp, the chips are sharp, and the workpiece may be sharp. Make sure the machine is turned off and clean before leaving the workspace. Always remove the chuck wrench after use, avoid horseplay, keep floor area clean.
Use care when cleaning the lathe, the cutting tools are sharp, the chips are sharp, and the workpiece may be sharp. When set too high the tool breaks down quickly, time is lost replacing or reconditioning the tool. Too low of a CS results in low production. Notice the largest roughing cuts range from. Notice the Feedrate for roughing cuts range from.
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