Comparison among Centre lathe, Capstan Lathe and Turret Lathe: Feature ( with a single tool). Difference between a Turret and Capstan Lathe: S. No. Before understanding difference between capstan and turret lathe let us first understand what a lathe is? and how it is different from the capstan. Before understanding difference between capstan and turret lathe let us first understand what a lathe is and how it is different from the capstan.
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Difference Between Capstan Lathe and Turret Lathe - Download as Word Doc . doc /.docx), PDF File .pdf), Text File .txt) or read online. Construction of turret/capstan lathes is similar to engine lathe but difference is they have an axially movable index able turret having hexagonal. Difference Between Capstan and Turret Lathe- Brief working, Advantages, pdf, the turret tool head is mounted over the ram and that.
BT1 6. State the various methods for taper turning operation. BT3 7. Write down the formula for calculating taper turning angle by tailstock set over BT3 distance and compound rest method.
Determine the angle at which the compound rest will be swivelled when cutting a BT4 taper on a piece of work having the following dimensions.
How can the number of teeth on various change gears be calculated? Write down the formula to find the following parameters BT3 i Machining time ii Total length of tool travel iii Number of passes or cut.
Define automatic machine.
What are the three stages of a tool-layout? Compare the advantages of turret lathe over capstan lathe. What are the different drives used in copying lathes? What do you mean by copy turning? What are the difference between automatic lathe and capstan lathe? Give a sketch illustrating the principle of operation of Swiss type automatic lathe.
Compare the parallel action and progressive action multi spindle automatic lathes. What are the four major parts of Swiss type automatic lathes? BT1 Part-B 13 Marks 1. What are the different types of machining operations that can be performed on a lathe?
And explain any six in detail. Give an application of each. Swivelling the compound rest, ii.
Form tool method. Also make a note on knurling, grooving and forming operations in a lathe. The lead screw of lathe contains 6 TPI. The lathe is 7 BT5 supplied with 20 to teeth in step of 5and an additional gear wheel of having teeth b Calculate the time required for one complete cut on a piece of work having mm long and 40 mm diameter.
Sketch and explain the working of Swiss type automatic screw machine. What are the advantages of automatic machines? Would you recommend a small or in large depth of cut? BT6 15 2 Describe the problems, if any, that may be encountered in clamping a work piece made of a soft metal in a three-jaw chuck. BT6 15 3 We have seen that cutting speed, feed, and depth of cut are the main parameters in a turning operation.
In relative terms, at what values should theses parameters be set for a a roughing operation and b finishing BT6 15 operation? What do you meant by differential indexing?
BT1 2 Why milling is a versatile machining process? Distinguish Up milling and Down milling. Sketch the nomenclature of a drill bit. List out the major parts of a shaper. Mention some of the work holding devices used in a shaper. BT4 7. Define the cutting speed, feed and machining time for drilling. Calculate the tap drill size to cut an internal thread for bolt of outside diameter of 10 BT4 mm, Pitch 1.
What are the classification of milling operations BT1 How do you classify milling cutters? Discuss a shell mill. What do you understand by peripheral milling? Define a vertical milling machine? What is an index plate? What are the different types of indexing heads?
List out the various elements of a plain milling cutter with a neat sketch. Give the two principal methods of gear manufacturing.
List out the gear finishing processes. Explain gear hobbing.
What is meant by gear shaving? BT1 Part-B 13 Marks 1 Explain with neat sketches the procedure for carrying out the following operations on a shaper. Horizontal cutting, Vertical cutting, concave surface 13 BT2 and keyway cutting. Reaming tool and ii.
Tapping tool 6 BT1 4 Sketch and explain the hydraulic drive of a horizontal shaper. Explain them. Explain any two with neat sketches. What are the advantages and disadvantages of gear hobbing process? The machine ratio index head. Calculate the gear ratio necessary 13 BT5 between the spindle and the indexing plate.
BT6 15 2 How would you recommend machining dovetails onto air compressor blades? BT6 15 3 Why do machined gears have to be subjected to finishing operations? A lathe turret with tools mounted in it can very much resemble a nautical capstan full of handspikes. This interpretation would lead Americans to treat "capstan" as a synonym of "turret" and "capstan lathe" as a synonym of "turret lathe". However, the multi-spoked handles that the operator uses to advance the slide are also called capstans, and they themselves also resemble the nautical capstan.
No distinction between "turret lathe" and "capstan lathe" persists upon translation from English into other languages. Most translations involve the term "revolver", and serve to translate either of the English terms. The words "turret" and "tower", the former being a diminutive of the latter, come ultimately from the Latin "turris", which means "tower", and the use of "turret" both to refer to lathe turrets and to refer to gun turrets seems certainly to have been inspired by its earlier connection to the turrets of fortified buildings and to siege towers.
The history of the rook in chess is connected to the same history, with the French word for rook, tour, meaning "tower". It is an interesting coincidence that the word "tour" in French can mean both "lathe" and "tower", with the first sense coming ultimately from Latin "tornus", "lathe", and the second sense coming ultimately from Latin "turris", "tower". Flat[ edit ] A subtype of horizontal turret lathe is the flat-turret lathe.
Its turret is flat and analogous to a rotary table , allowing the turret to pass beneath the part. January Learn how and when to remove this template message Hollow-hexagon turret lathes competed with flat-turret lathes by taking the conventional hexagon turret and making it hollow, allowing the part to pass into it during the cut, analogously to how the part would pass over the flat turret.
In both cases, the main idea is to increase rigidity by allowing a relatively long part to be turned without the tool overhang that would be needed with a conventional turret, which is not flat or hollow.
Monitor lathe[ edit ] The term "monitor lathe" formerly ss referred to the class of small- to medium-sized manual turret lathes used on relatively small work. The name was inspired by the monitor-class warships , which the monitor lathe's turret resembled. Today, lathes of such appearance, such as the Hardinge DSM and its many clones, are still common, but the name "monitor lathe" is no longer current in the industry.
Toolpost turrets and tailstock turrets[ edit ] Turrets can be added to non-turret lathes bench lathes, engine lathes, toolroom lathes, etc. Often these turrets are not as large as a turret lathe's, and they usually do not offer the sliding and stopping that a turret lathe's turret does; but they do offer the ability to index through successive tool settings. Interestingly enough, most strategy games are dominated by Asian, especially South Korean, players, where online multiplayer games are actually an incredibly major part from the culture for decades already.
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Difference Between Capstan Lathe and Turret Lathe
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These are the modified version of engine lathe. BT6 15 2 Describe the problems, if any, that may be encountered in clamping a work piece made of a soft metal in a three-jaw chuck. Classify the types of external grinders. These machines use cams to automate the sliding and indexing of the turret and the opening and closing of the chuck. How does loading differ from glazing in grinding process? This interpretation would lead Americans to treat "capstan" as a synonym of "turret" and "capstan lathe" as a synonym of "turret lathe".
January Learn how and when to remove this template message Hollow-hexagon turret lathes competed with flat-turret lathes by taking the conventional hexagon turret and making it hollow, allowing the part to pass into it during the cut, analogously to how the part would pass over the flat turret.
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