0
Machine Tools
Machine tools is the term used for the machinery used in engineering workshop for manufacturing metal products and parts. These machines include: Lathes, milling machines, CNC lathes and machine centers, Horizontal and vertical boring mills, slotting machines, shapers, radial arm drilling machines, gear cutters and grinders, power saws, etc.
544 Questions
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 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.
A joiner makes pieces of wood fit together without nails or other fasteners. The joiner makes special cuts in the wood so that they fit together; the joiner's craft can be used to make doors, book cases, and other items. The best Joiner tool is biscuit joiner. It is the Fastest wood joiner ever.
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.
Laser cutting is a technology that uses a laser to cut materials, and is typically used for industrial manufacturing applications, but is also starting to be used by schools, small businesses, and hobbyists. Laser cutting works by directing the output of a high-power laser most commonly through optics. The laser optics and CNC (computer numerical control) are used to direct the material or the laser beam generated. A typical commercial laser for cutting materials would involve a motion control system to follow a CNC or G-code of the pattern to be cut onto the material. The focused laser beam directed at the material, which then either melts, burns, vaporizes away, or is blown away by a jet of gas,[1] leaving an edge with a high-quality surface finish. Industrial laser cutters are used to cut flat-sheet material as well as structural and piping materials.
What is mean by pass line in cold rolling mill?
The pass line in a cold rolling mill passes through the center of the billet which is on the funace exit rollers and runs through each stand through the shear blades dividing the shear prior to the cooling bed. All of the guide equipment is aligned to the pass line.
What machine is used for tobacco packing?
Sidsam group is the manufacturers of Snuff Tobacco Packing Machine
What is the role of plc in cnc machine?
A Programmable Logic Controller (PLC) in a CNC machine plays a crucial role in managing and controlling the machine's operations. It interprets input signals from sensors and user commands, executing precise movements and processes according to programmed instructions. The PLC enhances automation by ensuring reliable and efficient operation, coordinating various components such as motors and actuators, and facilitating real-time monitoring and adjustments. This integration allows for improved productivity, accuracy, and flexibility in manufacturing tasks.
How do you use a punch former?
A punch former is used to create precise shapes and contours on the ends of metal workpieces. To use it, first secure the workpiece in the machine's vise, ensuring it is properly aligned. Next, select the appropriate punch and die set for the desired shape, then position the punch over the workpiece and apply pressure, either manually or with a hydraulic mechanism, to form the metal. Finally, release the pressure and remove the formed piece for further processing or finishing.
its a hand held rachet that's hooked to an air compressor by a hose and it operates on compressed air from the air compressor.
What is the drill size for M30 5 x 5 tap?
Not sure if this will help but - see the Article from Wikipedia in the attached link. There are various 'conversion tables' in there which might solve your question.
What are the function of chuck in Computer Numerical Control lathe machine?
In a Computer Numerical Control (CNC) lathe machine, the chuck serves as a crucial component for holding and securing the workpiece during machining operations. It allows for precise gripping of the material, ensuring stability and accuracy as the lathe rotates and cuts the workpiece. Chucks can be manually operated or automatically controlled, and they come in various types, such as three-jaw or four-jaw designs, to accommodate different shapes and sizes of materials. Additionally, the chuck facilitates quick setup and changeover, enhancing overall productivity in CNC machining processes.
Why is the slides of conventional machine tools not suitable for NC application?
The slides of conventional machine tools are typically designed for manual operation, prioritizing rigidity and smooth motion over automation requirements. They may lack the precision and repeatability needed for numerical control (NC) applications, which demand consistent accuracy across multiple cycles. Additionally, conventional slides often do not accommodate the rapid movements and complex programming capabilities inherent in NC systems, leading to potential performance issues. Consequently, specialized linear guides and servo-driven systems are preferred for NC applications to ensure optimal efficiency and precision.
When did machines replaced hand tools?
The change started happening around 1750 when stationery steam engines went into factories and could replace many of the jobs that were laboriously done by hand be fore. This change also involved lathes and mills that were steam powered and impeovements in mining machinery.
What is clearance angle of tool in lathe?
γ Back-off angle or clearance angle L w Length of the workpiece (not shown.
What is the bottom part of a pillar drill called?
It depends on what is meant by "bottom part" - does this refer to the entire machine, or the drill bit?
See the related link below for a labelled diagram of a pillar drill.
What is the meaning of ex factory price?
It is the sale price of finished goods at factory's warehouse. buyer have assume cost of transportation, taxes and any other fees or duties from factory to final destination.
