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Machinery and Tools
The Machinery and Tools category covers questions regarding hand tools, power tools, workshop machinery (such as lathes, milling machines, etc), welding and cutting tools and equipment, measuring instruments, earth-moving machinery, furnaces, factory and industrial machinery.
1,597 Questions
Can you use home generator to power arc welding machine?
As long as it is rated for wattage output for required voltage for welding machine
What is a tranverse crack in a weld?
A transverse crack goes across the weld from side to side. A longitudinal crack travels along the weld, sometimes from end to end but not always.
This depends mainly on three things. One is the thickness of the metal. Another is the kind of metal, and third is what type of joint you're welding. The easiest machine to use is a wire feed welder. If welding aluminum, be sure to use a spool gun or it will likely clog the lines. If you don't know what settings to use for the thickness and type of metal you are welding, it's a good idea to test it first on a scrap piece of similar type an thickness. Also, be sure to strength test the weld after it is completed especially if it is in a load bearing joint. If you are unfamiliar with the welding process, it's best to educate yourself on the process itself first before attempting to weld anything of value.
What is the process of gear cutting in a horizontal milling machine?
The basic process of cutting gears on a horizontal milling machine:
- The operator makes sure the machine is off and leaves it off at this point. He also checks the coolant and oil levels and cleans the machine if necessary.
- The milling machine head is removed and the overarm is extended over the bed.
- A milling cutter (selected according to the profile of the gear tooth) is installed on the arbor and centered with spacing sleeves. It is then inserted into the spindle and fastened.
- An arbor support is slid into the overarm and over the arbor, then fastened.
- On the table of the milling machine, a dividing head is placed and fastened to the bed (to the left of the arbor and its chuck facing toward it). The billet (workpiece) to be cut into a gear is gripped in the chuck of the dividing head. The dividing head is locked.
- The operator makes sure no feed levers are engaged and the spindle is in neutral.
- The machine is switched on, started and warmed up.
- After the machine is ready it is stopped and the correct speed and feed for machining the gear is selected.
- Before starting the machine, the table is moved so the workpiece is below the cutter and the workpiece is centered to the cutter along its Y-Axis.
- The machine is started again and the operator touches the workpiece with the rotating cutter then zeroes the Z-Axis dial on the vertical feed crank.
- The table is moved to the left along its X-Axis so the workpiece clears the cutter and the table is lifted a few millimeters for the first cut.
- Coolant is turned on and the X-Axis feed is engaged towards the cutter enabling the cutting of the gear groove.
- When the groove is complete, the table is lowered and moved to the left again to clear the cutter, then lifted to the same amount as the last cut.
- The dividing head is indexed and rotated to the next groove position, locked, and the cutting process is repeated until all the grooves are cut. This process can be repeated several times depending on the depth and size of the gear grooves and only a fraction of a millimeter will be left for finishing.
- The operator will ensure the cutter is still sharp and in good condition before commencing with the finishing cuts.
- A pre-finishing cut is taken and the groove depth and profile is measured. If all is fine, the table is lifted to the final cut depth and the cutting process is repeated until the gear is finished.
- Once the gear is removed from the machine, the sharp edges are removed.
The above method is just a basic explanation of how the operation is achieved. Operating any machine tool without proper training is not recommended and could lead to serious injury!
What is the size of a lathe that measures 6in from the center of the spindle to the main bed?
A lathe that measures 6 inches from the center of the spindle to the closest part of the bed is considered a lathe with a 12 inch swing.
What products are made by Milling Machines?
whatever machine products which cant be made using lathe(in lathe only designs symmetrical to the axis of the workpeice or object can be only made) almost any design can be mabe even very complicated designs are economically made using casting or moulding process but even for that the die or mould into which the molten metal is poured to take shape is made using milling machine
What is meant by hand wheel in lathe?
The function of the hand wheels on a lathe are to move the various carriages and the quill of a lathe by hand to its required positions.
Most lathes have four hand wheels.
- Carriage hand wheel - For moving the saddle
- Cross slide had wheel - For transverse movement of the tool post
- Compound had wheel - For moving the compound slide that can be set to an angle for taper cutting
- Tail stock hand wheel - To move the quill forward and backward for centering or drilling
Hand wheels on a lathe are connected to a screw which accommodates a nut that is attached to the above-mentioned components thus enabling movement when turned by hand.
if a machine has an exposed pulley and conveyor but the portion of ot that is exposed is well underneath the machine the employer
What is the function of the jaws of life?
To rip things apart quickly to allow the extraction of trapped people. They are most commonly used following automobile accidents.
"Pushing rope" means attempting an action that is ultimately futile. For a demo, lay a length of rope on the floor, stand at one end, and attempt to push it away from yourself. This phrase is commonly used to denote a man's lack of sexual prowess, for reasons that should now be obvious.
Why is the stop button of a machine larger and more prominent that the start?
A red coloured stop button can be used to either stop the machine normally, or to do an emergency stop in a hurry. It is larger and prominent to make it quicker and easier to smack the button with an open hand. The smaller green coloured start button is either level or recessed, meaning a finger has to be used to start the machine.
The emergency stop button will twist when pushed and stay down, breaking the circuit. It has to be turned to release the button back for normal use and to use the start button again.
Who uses a wrench and blowtorch?
Many people use a wrench and a blowtorch. Some plumbers do, some electricians do, well technicians do - and many others.
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What are the properties needed for a drill head?
vNeeds to be very hard, tough
vPoor thermal heat conductor
vIt needs to be able to drill through holes (strong)
vAbrasive
vIt can't dissolve
vNot conduct electricity
How can someone trace the technology of looms to computers today?
Technology depends on early inventions to develop. The early technology is the foundation for modern technology. It is all connected. Various methods were created to make the looms work and some of those ideas are still in use. An easier way to think of this is without the wheel there wouldn't be a car. The tools created to invent one thing are also used again to make something else. I suggest you watch an old TV show called CONNECTIONS that follows the invention of things and how they are connected. ALL of history is connected and once you understand this idea history becomes very clear and easy to understand.
Tartan paint is an April Fool's Joke. There is no way to apply a tartan finish from a single can of paint.
What is a person who operates a machine called?
A person who operates a machine is called an operator and in some cases a machinist.
