Mechanical tools

Features of power hacksaw features of a power hacksaw . correct blade of different types . features of power hacksaw blade Cut-off saws are used to cut metal stock roughly to the required length. 🤺 commonly used to cut off saw in small scale industries is a POWER SAW. Power hacksaw Features The power saw works like a handsaw, and has an arrangement for cutting during the movement in one direction and releasing pressure on the non-cutting stroke. The rotary motion of the motor is converted into linear motion by a crank mechanism. The required cutting pressure is obtained hydraulically or by an adjustable weight. During the non-cutting motion the blade will be lifted away from the work. A clamping device /vice holds the work firmly. Power hacksaw blades The saw blades are selected, depending on the machine and the type of work on hand. The blades are made of H. S. Steel and are fully hardened. For different materials, blades of different pitches are used (number of teeth per 25mm length...

. parts of a telescopic gauge . constructional features of telescopic gauges . parts of a small hole gauge Telescopic gauges are popular for fine work as they are very rigid and have a better 'feel'. Uses Used for measuring the sizes of holes, slots and recesses. Construction Telescopic gauges are 'T' shaped. They consist of a pair of telescopic legs or plungers connected to a handle. The plungers are spring loaded to force them apart. After inserting the gauge in a hole or slot, it can be locked in position by turning the knurled handle. It may then be withdraw from the hole and measured with a micrometer. Telescopic gauges are available in a set of 5 nos, to measure holes from 12.7mm to 152.4mm. No.1 12.7mm to 19mm No.2 19.0mm to 31.7mm No.3 31.7mm to 53.9mm No.4 53.9mm to 88.9mm No.5 88.9mm to 152.4mm Small hole gauges Telescopic gauges are not suitable for measuring holes below 12.7mm. For measuring smaller holes and slots, small hole gauges are used. Construction A...