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What is the apron on a lathe?
The apron on a lathe is suspended from the saddle. It houses a gearbox connecting the carriage hand wheel to the rack enabling longitudinal movement of the saddle. It also houses the half nut and its lever for thread cutting and power feed levers.
How rack and pinion is used for indexing mechanism?
you need a rack and pinion nut breaker to which you fix a pinion at the free end ie where nut is placed to be cracked. This is because you need to convert reciprocating motion of the rack and pinion mechanism built in the nut cracker into circular motion. Attach the nut cracker to the collect chuck shaft through the bore of the additional pinion you installed at the free end of the cracker. When you punch the nut cracker vide its handle once it moves the pinion one tooth on the rack. Thus you can rotate ( ie give angular motion to ) the fixed workpiece from one tooth or as many teeth as you like., depending on the pitch of the threads on the rack and pinion. mazHur
Which kind of simple machine is plumber wrench?
It is a simple lever mechanism using to hold round objects firmly without slipping, as well as to tighten square, hexagonal nuts or bolts.
Should a locknut or jam nut be fitted above or below the full nut on a stud?
south pole south pole south pole
What is the relationship between a nut thread and a screw thread?
when a spiral groove is cut over a hole, then it is nut thread. when a spiral groove is cut over a shaft, then it is screw thread.
What is half nut mechanism?
A half nut is literally a nut split in half, length wise and makes up the basic half-nut mechanism. Such a mechanism is typically found on a engine lathe. This mechanism can be "open" or "closed" and when closed clamps onto the lead screw of said lathe. This forms a connection between the apron of the lathe sliding on the ways. The apron carries the cross and compound slides, the latter in turn holds the cutting tool. When closed, or "engaged", the movement of the apron moves relative to the rotation of the lead screw. This lead screw is precise in nature and can be described in terms of threads per inch (or per meter or millimeter in case of metric). The lead screw is also connected somehow (there are various methods) to the main motor of the lathe and this ratio of gears can be changed so that many variations of threading, all relative to the thread of the lead screw, can be accomplished on the workpiece being turned/threaded by the screw cutting operation. On a basic older style lathe, the screw begin cut can not be cut in a single pass of the cutting tool. This means that the half-nut may need to be disengaged to reverse the direction of the apron allowing for the cutting operation to be repeated, each time engaging and re-engaging the half nut, until the depth of the screw being cut has reached a final thread depth.
What is half-nut mechanism?
A half nut is literally a nut split in half, length wise and makes up the basic half-nut mechanism. Such a mechanism is typically found on a engine lathe. This mechanism can be "open" or "closed" and when closed clamps onto the lead screw of said lathe. This forms a connection between the apron of the lathe sliding on the ways. The apron carries the cross and compound slides, the latter in turn holds the cutting tool. When closed, or "engaged", the movement of the apron moves relative to the rotation of the lead screw. This lead screw is precise in nature and can be described in terms of threads per inch (or per meter or millimeter in case of metric). The lead screw is also connected somehow (there are various methods) to the main motor of the lathe and this ratio of gears can be changed so that many variations of threading, all relative to the thread of the lead screw, can be accomplished on the workpiece being turned/threaded by the screw cutting operation. On a basic older style lathe, the screw begin cut can not be cut in a single pass of the cutting tool. This means that the half-nut may need to be disengaged to reverse the direction of the apron allowing for the cutting operation to be repeated, each time engaging and re-engaging the half nut, until the depth of the screw being cut has reached a final thread depth.
What is the split nut in lathe?
The split nut, also known as half nut enables thread cutting on a lathe. It is engaged around the lead screw (which is housed in the apron attached to the saddle) and moves the saddle in the required direction at the required pitch.
What is the apron on a lathe?
The apron on a lathe is suspended from the saddle. It houses a gearbox connecting the carriage hand wheel to the rack enabling longitudinal movement of the saddle. It also houses the half nut and its lever for thread cutting and power feed levers.
A lead screw of a lathe with nut forms what kind of pair?
sliding pair
What is meant by pitch measurement in lathe?
Pitch measurement refers to the distance from one thread to the next when threads are cut on a lathe. Different threads have different pitches and a lathe can be set to to cut to any specified pitch. This is achieved by selecting the pitch and engaging the lead screw on levers located on the headstock, then engaging the half-nut around the lead screw from the apron. With the correct threading tool inserted threads can be cut into the workpiece.
How are lathe machines installed?
Lathes are installed using the following method: (The method may slightly vary from person to person)The bolt pattern on the head- and tail stock pedestals are measured and matching studs are set into the floor onto which the lathe will be installed.An electrical line is routed to the location where the lathe will be installed for supplying it with power.The lathe is placed on shifting skates or machine rollers and moved over its permanent location.Jacks are used to lift the lathe off the rollers and placed over the studs and down onto the floor. The jacks are then removed.A set of spirit levels are placed on the lathe's beds and leveling of the machine is done by setting the jacking bolts located on the pedestals.Once the machine is leveled, a washer and nut is placed on each stud and the machine is bolted down.A further option might be used by cementing between the floor and the pedestal bases of the lathe to enhance sturdiness.Power is connected to the lathe and all the oil levels are checked and filled if necessary.The lathe is started and tested.An alternative to setting studs, using the lathe's jacking bolts and cementing is the use of adjustable rubber foot pads. The machine is moved to its location and jacked up. The foot pads are installed into the pedestal mounting holes then the lathe is set on the floor and leveled.
Which is a fret 1 on a guitar?
The first fret would be the one closest to the nut (where the tuning machines are).
What is a screw thread mechanism?
Picture a nut on a screw. You are holding the nut so it can't turn, but allow it to go up and down the screw. The screw is restrained so it can turn, but not move back and forth. As you turn the screw one way and the other, the nut will move up and down the screw. That is a trivial example of one very common screw thread mechanism.
What is a Jesus Nut?
it is a nut that holds the main rotor to the mast of some helicopters. The Jesus Nut is the large nut on the top of the mast that holds the entire rotor blades and rotor mechanism to the mast. Bascially, it holds the weight of the aircraft by the top of the mast and if it should fail, then all you can do is say "Jesus!".
What kind of machines e is a thread roll?
A thread rolling machine is used to cut threads on round metal bars, in order to take the screw thread of a nut (as in a nut and bolt).
What simple machines are in the mouth?
The jaws act as a lever, multiplying the jaw muscle forces, similar to nut crackers.
