Lathes - Metalworking

The lathe is a very versatile and important machine to know how to operate. This machine rotates a cylindrical object against a tool that the individual controls. The lathe is the forerunner of all machine tools. The work is held and rotated on its axis while the cutting tool lathe machine tools list data advanced along the line of a desired cut.

The lathe is one of the most versatile machine tools used in industry. With suitable attachments, the lather may be used for turning, tapering, form turning, screw cutting, facing, dulling, boring, spinning, grinding, polishing operation. Cutting operations are performed with a 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 the work, for machining taper and angles. On a lathe, the tailstock does not rotate. Instead, the spindle that holds the stock rotates. Collets, centers, three jaw chucks, and other work-holding attachments can all be held in spindle. The tailstock can hold tools for drilling, threading, lathe machine tools list data, or cutting tapers.

Additionally, it can support the end of the workpiece using a center and can be adjusted lqthe adapt to different workpiece lengths. As daa 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 ddata is still in the chuck key. Move the tool bit to a safe distance lathe machine tools list data 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 macnine as short as possible in the lathe machine tools list data holder to prevent it from vibrating or breaking.

If any filing is done on work revolving in the lathe, file left handed to lathe machine tools list data 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 lathe machine tools list data 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, machhine chips are sharp, and the workpiece may tols sharp.

When set too high rata 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. There are many different tools that can be used for turning, facing, lathe machine tools list data parting operations on the lathe.

Each tool is usually composed of carbide as a base material, but can include other compounds. This section covers the different appearances and toools of lathe cutting tools. Figure A:depicts a standard turning tool to create a semi-square shoulder. If there is enough material behind the cutting edge, the tool can also be used for roughing. Figure B:depicts a standard turning tool with a lead angle.

This angle enables for heavy roughing cuts. Ititalso possible to turn the tool to create a semi-square shoulder. Figure C:nose has a very large radius, which helps with fine finishes on both light and heavy cuts. The tool can also be used to form a corner radius. Figure D:depicts a rotated standard turning tool.

Its nose leads the cutting edge to create light finishing cuts on the outside diameter and face of the shoulder.

Figure D Figure E:depicts a form tool. Different forms can be ground into the tool, which will be reproduced onto the part. Figure F:depicts a facing tool. This cutter is used to face the end of a workpiece to provide for a smooth, flat finish. If the stock has a hole in the center, utilize a half-center to stabilize and support the workpiece.

Figure G:depicts a grooving or under-cutting tool. As shown, it is used to cut grooves into the workpiece. When there are proper clearances, the tool can cut deeply, or cut to the left or right.

Figure H:depicts a parting tool. Parting tools cut off the stock at a certain length. This mschine requires a preformed blade and holder. Datq it with straight rule or tailstock. Figure 2: Toolpost and Toolholder. If it is not running true, remove the center, clean all surfaces, and replace the center. Check again for trueness. Figure 3: Workpiece in Lathe. To reposition the cutting tool, move the cross slide and lathe saddle by hand.

Power feeds are also available. Exact procedures are dependent on the machine. The compound provides a third axis of motion, and its angle can be altered to cut tapers at any angle. The cutter can be hand fed along the chosen angle. The compound does not have a power feed. If needed, use two hands for a smoother feed rate. This will make a fine finish. Both the compound and cross slide have micrometer dials, but the saddle lacks one.

If more accuracy is needed when positioning the saddle, use a dial indicator that is attached to the saddle. Dial indicators press against stops. Tailstock Center. Description The lathe is lathe machine tools list data very versatile and lathe machine tools list data machine to know how to operate.

Figure E:depicts a form tool. Previous: Unit 4: Offset Boring Head. Next: Unit 2: Speed and Feed. Share This Book Share on Twitter. Figure A. Figure B. Figure C. Figure D. Figure E. Figure F. Figure G. Figure H. Figure I.

holders are suitable to machine the geometry Select a tool material based on the part material Compare the types of cutting tools to use for turning and profiling on the O.D. and I.D. Download and install the MachiningCloud App, an online database of cutting tool data Use the MachiningCloud App to search for a holder and its related inserts in File Size: 2MB. Myford Super 7 price list _www.- (View Contents) Mar M: Myford Quick setting lathe www.- : Mar K: Myford Quick setting lathe tools_www.- (View Contents) Mar M: Myford Plus User www.- : Mar M: Myford Plus User Manual_www.- (View Contents. A leading manufacturers and suppliers of lathe machine tools offering all types of lathe tools at affordable prices in India and International market also.

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