Downloads PDF Machine Tool Practices (10th Edition), PDF Downloads Machine Tool Practices (10th Edition), Downloads Machine Tool. Book Details Author: Richard R. Kibbe,Roland O. Meyer,Warren T. White,John E. Neely,Jon Stenerson,Kelly Curran Pages: Binding: Hardcover Brand: ISBN: Description Machine Tool Practices, Tenth Edition, provides a richly illustrated, practical, and. 10th Edition Ebook. You should get the file at. onceHere is the working pdf download link for Machine. Tool Practices 10th Edition Ebook. Desigualdade O que.
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Machine Tool Practices, Tenth Edition, provides a richly illustrated, practical, and understandable treatment of machine tool technology and related subjects. Lots of older books have the same info. I bought an old Machining Practices book for $10 and it had all of the same info. It's a good book but a tad over priced. Fri, 26 Oct GMT machine tool practices 10th edition pdf -. Download machine tool practices 10th edition or read machine tool practices.
Apprentice Machinist The apprentice machinist learns the trade by entering a formal training program sponsored by private industrial, trade union, or government entities.
The period of training is typically four years long and is a combination of on-the-job experiences and formal classroom education. Apprenticeship curriculum standards are often universal, representing the collective inputs of all levels of the trade from production through management.
Serving an apprenticeship represents one of the best and well-established methods of learning a skilled trade.
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Helpers and Limited Machinists Many manufacturing industries use limited machinists or machinists helpers. These individuals assist the journeyperson by providing general help. These trades are often fairly low skill, since the person does not have full responsibility for the work at hand. However, helpers and limited machinists may advance to journeyperson status after a suitable training period. Professional Career Opportunities At the professional level, many exciting career opportunities are also available.
These careers require college preparation and include industrial technology IT ; industrial engineering IE ; manufacturing engineering; materials engineering; mechanical, electrical, electronic, and computer systems engineering; and CNC programming. The industrial engineer, industrial technologist, and manufacturing engineer are often involved with the applications of manufacturing technology.
These individuals design tooling, set up manufacturing systems, apply computers to manufacturing requirements, and write CNC programs. Design engineers, often using computers, design products and manufacturing equipment and apply new materials in product design.
Seller Inventory n. Richard R. Kibbe; Roland O. Meyer; Warren T. White; John E. Machine Tool Practices 10th Edition. Kibbe ; Roland O. Meyer ; Warren T. White ; John E. Neely ; Jon Stenerson ; Kelly Curran. Pearson , This specific ISBN edition is currently not available. View all copies of this ISBN edition: Synopsis Machine Tool Practices, Tenth Edition, provides a richly illustrated, practical, and understandable treatment of machine tool technology and related subjects, including measurement and tools, reading drawings, mechanical hardware, hand tools, metallurgy, and the essentials of computer numerical control.
download New View Book. Customers who bought this item also bought. Stock Image. Machine Tool Practices Format: Hardcover Kibbe, Richard R. Published by Prentice Hall. New Quantity Available: Some thread applications can tolerate loose threads, while other applications require tight threads.
For example, the head of your cars engine is held down by a threaded fastener called a stud bolt, or simply a stud. A stud is threaded on both ends. One end is threaded into the engine block. The other end receives a nut that bears against the cylinder head. When the head is removed, it is desirable to have the stud remain screwed into the engine block. This end requires a tighter thread fit than the end of the stud accepting the nut.
If the fit on the nut end is too tight, the stud may unscrew as the nut is removed. The A symbol indicates an external thread. The B symbol indicates an internal thread.
This notation is added to the thread size and number of threads per inch. Let us consider the in. The complete notation reads 1 2. On this particular bolt, the class of fit is 2. The symbol A indicates an external thread.
If the notation had read 1 2. This could be a nut or a hole threaded with a tap. Taps are a common tool for producing an internal thread. Classes 1A and 1B have the greatest manufacturing tolerance. They are used where ease of assembly is desired and a loose thread is acceptable. Class 2 fits are used on the largest percentage of threaded fasteners. Class 3 fits will be tight when assembled. Each class of fit has a specific tolerance on major diameter and pitch diameter.
These data may be found in machinists handbooks and are required for the manufacture of threaded fasteners. Below a diameter of in.
Above size 12, the major diameter is expressed in fractional form. Both series continue up to about 4 in. All the sizes listed in the table are common fasteners in all types of machines, automobiles, and other mechanisms. Your contact with these common sizes will be so frequent that you will soon begin to recall them from memory.
Metric Threads With the importation of foreign manufactured hardware in recent years, especially in the automotive and machine tool areas, metric threads have become the prevalent thread type on many kinds of equipment.
The metric thread form is similar to the unified and based on an equilateral triangle. The root may be rounded and the depth somewhat greater. An attempt has been made through international efforts International Standards Organization, ISO to standardize metric threads. The ISO metric thread series now has 25 thread sizes with major diameters ranging from 1. Metric thread notations take the following form: This thread would have a major diameter of 10 mm and a pitch or lead of 1.
ISO metric thread major diameters and respective pitches are shown in Table A The numbers indicate the amount of tolerance allowed; that is, the smaller the number, the smaller the amount of tolerance allowed. Lowercase letters are used for external threads, with the letter e indicating a large allowance, a g a small allowance, and an h no allowance. Conversely, uppercase letters are used for internal threads, with a G used to indicate a small allowance and an H used to indicate no allowance.
All these are used in a variety of ways to hold parts and assemblies together. Complex assemblies such as airplanes, ships, or automobiles may have many thousands of fasteners taking many forms. Bolts and Screws A general definition of a bolt is an externally threaded fastener that is inserted through holes in an assembly. A bolt is tightened with a nut Figure A, right. A screw is an externally threaded fastener that is inserted into a threaded hole and tightened or released by turning the head Figure A, left.
From these definitions, it is apparent that a bolt can become a screw or vice versa. This depends on the application of the hardware. Bolts and screws are the most common of the threaded fasteners. These fasteners are used to assemble parts quickly, and they make disassembly possible. The strength of an assembly of parts depends to a large extent on the diameter of the screws or bolts used. In the case of screws, strength depends on the amount of thread engagement.
Thread engagement is the distance that a screw extends into a threaded hole. The minimum thread engagement should be a distance equal to the diameter of the screw used; preferably, it should be times the screw diameter. Should an assembly fail, it is better to have the screw break than to have the internal thread stripped from. It is generally easier to remove a broken screw than to drill and tap for a larger screw size.
With a screw engagement of times its diameter, the screw will usually break rather than strip the thread in the hole. Machine bolts Figure A are made with hexagonal or square heads. These bolts are often used in the assembly of parts that do not require a precision bolt.
The body diameter of machine bolts is usually slightly larger than the nominal or standard size of the bolt. Body diameter is the diameter of the unthreaded portion of a bolt below the head. A hole that is to accept a common bolt must be slightly larger than the body diameter. When machine bolts are downloadd, nuts are frequently included. Hexagonal head machine bolt sizes range from 14 in. A -in. Stud bolts Figure A have threads on both ends.
Stud bolts are used where one end is semipermanently screwed into a threaded hole. A good example of the use of stud bolts is in an automobile engine. The stud bolts are tightly held in the cylinder block, and easily changed nuts hold the cylinder heads in place. The end of the stud bolt screwed into the tapped hole has a class 3A thread, while the nut end is a class 2A thread. Carriage bolts Figure A are used to fasten wood and metal parts together. Carriage bolts have round heads with a square body under the head.
The square part of the carriage bolt, when pulled into the wood, keeps the bolt. Carriage bolts are manufactured with class 2A coarse threads. Machine screws are made with either coarse or fine thread and are used for general assembly work.
The heads of most machine screws are slotted to be driven by screwdrivers. Machine screws are available in many sizes and lengths Figure A Several head styles are also available Figure A Machine screw sizes fall into two categories.
Fraction sizes range from diameters of 14 in. Below 1 4 -in. For each number above zero, add. Machine screws 2 in. Longer machine screws have a -in. Capscrews Figure A are made with a variety of different head shapes and are used where precision bolts or screws are needed.
Capscrews are manufactured with close tolerances and have a finished appearance. Capscrews are made with coarse, fine, or special threads. Capscrews with a 1-in. Those with greater than a 1-in.
The strength of screws depends mainly on the kind of material used to make the screw. Different screw materials are aluminium, brass, bronze, low-carbon steel, medium-carbon steel, alloy steel, stainless steel, and titanium. Steel hex head capscrews come in diameters from 14 to 3 in. Slotted head capscrews can have flat heads, round heads, or fillister heads. Socket head capscrews are also made with socket flat heads and socket button heads. For machine screws, slotted or Phillips driving recess.
Used in counter bored holes.
Slotted or Phillips driving recess. Machine screws and tapping screws. Use where flush surface is desired.
Slotted, clutch, Phillips, or hexagon-socket driving recess. Has a larger head than 82 design. Use with thin metals, soft plastics, etc. Used in counter bored holes that require a flush screw. With slot only for machine screws. Phillips driving recess only.
Permits flush assemblies in thin stock. Has outer surface rounded for appearance. With slotted or Phillips driving recess. PAN Low large diameter with high outer edges for maximum driving power.
With slotted or Phillips recess for machine screws. Available pain for driving screws. Used for bolts, machine screws, tapping screws, and drive screws. Covers larger bearing area than round or truss head. For tapping screws only; with slotted or Phillips driving recess. Head with square, sharp corners, and ample bearing surface for wrench tightening. Used for machine screws and bolts.
Square, sharp corners can be tightened to higher torque with wrench than any other set-screw head. For machine screws and tapping screws. OVAL Like standard flat head. Has outer surface rounded for added attractiveness. Slotted, Phillips, or clutch driving recess.
Has a larger diameter. Good for covering large diameter clearance holes in sheet metal. Setscrews Figure A are used to lock pulleys or collars or shafts. Setscrews can have square heads with the head extending above the surface; more often, the setscrews are slotted or have socket heads.
Slotted or socket head setscrews usually disappear below the surface of the part to be fastened. A pulley or collar with the setscrews below the surface is much safer for persons working around it. Socket head setscrews may have hex socket heads or spline socket heads.
Setscrews are manufactured in number sizes from 0 to 10 and in fractional sizes from 14 to 2 in.
Setscrews are usually made from carbon or alloy steel and hardened. Square head setscrews are often used on toolholders Figure A or as jackscrews in leveling machine tools Figure A Setscrews have several different points Figure A The flat point setscrew will make the least amount of indentation on a shaft and is used where frequent adjustments are made.
A flat point setscrew is also used to provide a jam screw action when a second setscrew is tightened on another setscrew to prevent its release through. The oval point setscrew will make a slight indentation as compared with the cone point. With a half dog or full dog point setscrew holding a collar to a shaft, alignment between shaft and collar will be maintained even when the parts are disassembled and reassembled. This is because the shaft is drilled with a hole of the same diameter as the dog point.
Cup-pointed setscrews will make a ring-shaped depression in the shaft and will give a slipresistant connection. Square head setscrews have a class 2A thread and are usually supplied with a coarse thread. Figure A Capscrews. Thread-forming screws Figure A form their own threads and eliminate the need for tapping. These screws are used in the assembly of sheet metal parts, plastics, and nonferrous material.
Thread-forming screws form threads by displacing material with no cutting action. These screws require an existing hole of the correct size. Thread-cutting screws Figure A make threads by cutting and producing chips. Because of the cutting action these screws need less driving torque than thread-forming screws. Applications are similar to those for thread-forming screws. These include fastening sheet metal, aluminium, brass, die castings, and plastics.
Drive screws Figure A are forced into the correct size hole by hammering or with a press. Drive screws make permanent connections and are often used to fasten name plates or identification plates on machine tools.
Thumbscrews and wing screws Figure A are used where parts are to be fastened or adjusted rapidly without the use of tools. Common nuts Figure A are manufactured in as many sizes as there are bolts. Most nuts are either hex hexagonal or square in shape. Nuts are identified by the size of the bolt they fit, not by their outside size. Common hex nuts are made in different thicknesses. A thin hex nut is called a jam nut.
Machine Tool Practices, 10th Edition
It is used where space is limited or where the strength of a regular nut is not required. Jam nuts are often used to lock other nuts Figure A Regular hex nuts are slightly thinner than their 7 in. A 2 -in. Other common nuts include various stop nuts or locknuts.
Two common types are the elastic stop nut and the compression stop nut. They are used in applications where the nut might vibrate off the bolt. Wing nuts and thumb nuts are used where quick assembly or disassembly by hand is desired.
Other hex nuts are slotted or castle nuts. These nuts have slots cut into them. When the slots are aligned with holes in a bolt, a cotter pin may be used to prevent the nut from turning. Axles and spindles on vehicles have slotted nuts to prevent wheel bearing adjustments from slipping.
Cap or acorn nuts are often used where decorative nuts are needed. These nuts also protect projecting threads from accidental damage. Nuts are made from many different. Roll form their own precise mating threads without chips. Cold flow compression of metal adjacent to the full round thread form assures maximum holding power. Thread forming screw for thicker sheet metal,. Spaced thread, blunt Die Point. Slight taper on point holds screw upright in hole making it easy to drive.
May be used in nonferrous castings, plastics, and soft metals. Spaced thread, gimlet point. Often called a sheet-metal screw. Strongest joint in light gage sheet-metal,. For use in pierced or punched holes where sharp starting point is needed, and exposed point does not matter. Recommended for new designs.
Screw with blunt Die Point and standard machine screw threads. For general use in metals from. More engaged thread surface provides greater holding power. Spaced thread, blunt die point. Minimum danger of stripping in plastics and soft materials. Requires low torque values. Wide flute provides room for twisted curley chips so they do not cause binding or reaming of the hole.
Widely used. TEKS drill their own holes Cut or form a mating thread And fasten with maximum holding strength. Single wide flute cut into gimlet point. Used in wood and brittle plastics to reduce splitting and breaking. Five evenly spaced cutting grooves and large chip cavities. Machine screw threads. Blunt Die Point. Low driving torque. Five cutting grooves with spaced threads also available.
Similar to Type F except with spaced thread as illustrated. Screw for general purpose in hard or soft metals. Blunt Die Point with single narrow flute. Easy starting. Used in same manner as type C but where less driving torque is needed. General purpose screw. Same as type I but with single wider flute to provide more chip clearance for use in softer metals such as die casting, copper, and copper alloys.
A thread insert retains the original thread size;. One common type of internal thread insert is the wedge type. The thread insert has both external and internal threads. This type of thread insert is screwed into a hole tapped to the same size as the thread on the outside of the insert. The four wedges are driven in using a special driver Figure A This holds the insert in place. The internal thread in the insert is the same as the original hole. A second type of internal thread insert is also used in repair applications as well as in new installations.
Threaded holes are often required in products made from soft metals such as aluminium. If bolts, screws, or studs were to be screwed directly into the softer material, excessive wear could result, especially if the bolt was taken in and out a number of times. To overcome this problem, a thread insert made from a more durable material may be used.
Stainless steel inserts are frequently used in aluminium Figure A This type of thread insert requires an insert tap, an insert driver, and a thread insert Figure A After the hole for the thread insert is tapped, the insert driver is used to screw the insert into the hole Figure A The end of the insert coil must be broken off and removed after the insert is screwed into place.
The insert in the illustration is used to repair spark plug threads in engine blocks. Washers also prevent the marring of a finished surface when nuts or screws are tightened. Washers can be manufactured from many different materials. The nominal size of a washer is intended to be used with the same nominal-size bolt or screw. Standard series of washers are narrow, regular, and wide.
For example, the outside diameter of a 14 -in. Lock washers Figure A are manufactured in many styles. The helical spring lock washer provides hardened bearing surfaces between a nut or bolt head and the components of an assembly.
The spring-type construction of this lock washer will hold the tension between a nut and bolt assembly even if a small amount of looseness should develop. Helical spring lock washers are manufactured in series: The hicollar lock washer has an outside diameter equal to the same nominal-size socket head cap screw.
This makes the use of these lock washers in a counterbored bolt hole possible. Counterbored holes have the end enlarged to accept the bolt head.
A variety of standard tooth lock washers are produced, the external type providing the greatest amount of friction. Takes high tightening torque. Available for 82 and heads and also internal or external teeth. Plain periphery for reduced marring action on surfaces. Toothed periphery offers additional protection against shifting. Used also for oversize or elongated holes. Plain periphery is recommended to prevent surface marring. Toothed periphery should be used where additional protection against shifting is required.
Prevents gouging of soft metals. More biting teeth for greater locking power. Excellent for oversize or enlongated screw holes. Screw heads should be large enough to cover washer teeth.
Available with left hand or alternate twisted teeth. Spreading holding force over a larger area. Used also as a spacer. Available in all metals. The pyramid washer offers bolt locking teeth and rigidity yet is flexable under heavy loads.
Available in both square and hexagonal design. For use with small head screws and where a smooth appearance is desired, an internal tooth lock washer is used. When large bearing area is desired or where the assembly holes are oversized, an internalexternal tooth lock washer is available. A countersunk tooth lock washer is used for a locking action with flat head screws. Pins Pins Figure A find many applications in the assembly of parts. Dowel pins are heat-treated and precision ground.
Their diameter varies from the nominal dimension by only 1 plus or minus. Dowel pins are used where accurate alignments must be maintained between two or more parts. Holes for dowel pins are reamed to provide a slight press fit. Reaming is a machining process during which a drilled hole is slightly enlarged to provide a smooth finish and accurate diameter. Dowel pins only locate. Clamping pressure is supplied by the screws.
Dowel pins may be driven into a blind hole. A blind hole is closed at one end. When this kind of hole is used, provision must be made to let the air that is displaced by the pin escape.
This can be done by drilling a small through hole or by grinding a narrow flat the full length of the pin. Always use the correct lubricant when making screw and pin assemblies. One disadvantage of dowel pins is that they tend to enlarge the hole in an unhardened workpiece if they are driven in and out several times.
When parts are intended to be disassembled frequently, taper pins will give accurate alignment. Taper pins have a taper diminishing diameter of 14 in. If a taper pin hole wears larger because of frequent disassembly, the hole can be reamed larger to receive the next larger size of taper pin.
Diameters of taper pins range in size 1 from 16 in. Taper pins are identified by a number from 70 small diameter to number 10 large diameter as well as by their length.
The large end diameter is constant for a given size pin, but the small diameter changes with the length of the pin. Some taper pins have a threaded portion on the large end. A nut can be threaded on the pin and used to pull the pin from the hole much like a screw jack. This facilitates removal of the pin. A grooved pin is either a cylindrical or a tapered pin with longitudinal grooves pressed into the pin body.
This causes the pin to deform. A grooved pin will hold securely in a drilled hole even after repeated removal. Roll pins can also be used in drilled holes with no reaming required.
These pins are manufactured from flat steel bands and rolled into cylindrical shape. Roll pins, because of their spring action, will stay tight in a hole even after repeated disassemblies. Cotter pins are used to retain parts on a shaft or to lock a nut or bolt as a safety precaution. Cotter pins make a quick assembly and disassembly possible. Retaining Rings Retaining rings are fasteners used in many assemblies.
Retaining rings can be easily installed in machined grooves, internally in housings, or externally on shafts or pins Figure A Some types of retaining rings do not require grooves but have a self-locking spring-type action. The most common application of a retaining ring is to provide a shoulder to hold and retain a bearing or other part on an otherwise smooth shaft.
They may also be used in a bearing housing Figure A Special pliers are used to install and remove retaining rings. Keys Keys Figure A are used to prevent the rotation of gears or pulleys on a shaft. Keys are fitted into key seats in both the shaft and the external part. Keys should fit the key seats rather snugly.
Square keys, where the width and the height are equal, are preferred on shaft sizes up to a -in. Above a -in. Woodruff keys, which almost form a half circle, are used where relatively light loads are transmitted. One advantage of Woodruff keys is that they cannot change their axial location on a shaft because they are retained in a pocket. A key fitted into an end-milled pocket will also retain its axial position on the shaft.
Machine Tool Practices 9e
Most of these keys are held under tension with one or more setscrews threaded through the hub of the pulley or gear. Where extremely heavy shock loads or high torques are encountered, a taper key is used.
Taper keys have a taper diminishing diameter of 18 in. Wherever a tapered key is used, the key seat in the shaft is parallel to the shaft axis, and a taper to match the key is in the hub. Where only one side of an assembly is accessible, a gib head taper key is used instead of a plain taper key. When a gib head taper key is driven into the key seat as far as possible, a gap remains between the gib and the hub of the pulley or gear. The key is removed for disassembly by driving a wedge into the gap to push the key out.
A feathered key is secured in a key seat with. What is the difference between a bolt and a screw? How much thread engagement is recommended when a screw is used in an assembly?
When are class 3 threads used? What is the difference between a machine bolt and a cap screw? What is the outside diameter of a No. Where are setscrews used? When are stud bolts used? Explain the difference between thread-forming and threadcutting screws. Where are castle nuts used? Where are cap nuts used? Explain two reasons why flat washers are used. What is the purpose of a helical spring lock washer? When is an internalexternal tooth lock washer used?
When are dowel pins used? When are taper pins used? When are roll pins used? What are retaining rings? What is the purpose of a key?
When is a Woodruff key used? When is a gib head key used? The pictorial representation of an idea is a vital line of communication between the designer and the people who produce the final product.
Technological design would be impossible if not for the several different ways an idea may be represented by a drawing. The drawing also provides an important testing phase for an idea. Many times an idea may be rejected at the drawing board or computer-aided design CAD terminal stage before a large investment is made to equip a manufacturing facility and risk production of an item that fails to meet design requirements.
Isometric and oblique are not generally used as working drawings for the machinist.What can you do if you wear prescription eyeglasses?
Below 1 4 -in. Safety becomes economically valuable to you and to your employer. Always use the correct lubricant when making screw and pin assemblies. Additional Thread Forms Unit