Shaping Machine 

Precautions to be Observed while Shaping Jobs between Centres

The alignment of the centre is to be checked (whether it is parallel to the movement of the ram) and adjusted before starting the work. The moving tool should not come and dash against the head stock. For long work pieces, proper support should be given (A jack is suitable for it) The work is to be guarded against turning centres, while the tool cuts, with proper locking device. Checking the Vice Jaws for Squareness and Parallelism For checking the vice jaws for its squareness, place dial test indicator in…

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Shaping Machine 

Work Holding Devices Used in Shaping Machine

There are many ways in which work may be held while it is being machined on the shaping machine. The common methods are mentioned below: Chucks – Three jaw and four jaw chucks are mounted on shaper with suitable means to hold the work pieces. Special Jig – Jig accurately locates the work in position for machining and holds it securely in position by means of clamping bolts, studs and screw. Angle Plate – The work is securely fastened to an angle plate with clamps or bolts. Plain Vice – Plain vice is bolted to the machine…

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Shaping Machine 

Main Parts of Shaping Machine and Their Application

The following are the main parts of shaping machine: Base – Base is a hollow casting upon which the other parts of the shaper are mounted. It also houses a reservoir for supply of oil which is circulated for moving parts of the machine. Frame – Frame is a large casting that rests upon the base. It houses the mechanism and supports the ram and the table. Ram – Ram is the main moving part of the shaper. It holds and drives the single point cutting tool back and forth…

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Engineering 

Heat Treatment of Tools

General purpose tools like chisel, hammer, file, punch, lathe tools etc. are manufactured by forging. These tools are normalized immediately after forging to restore their original structure and to relieve stresses and strains set up while forging. Hardening is carried out to induce hardness at the working end and simultaneously tempering is carried out to make the body tough to absorb shock while working. Hence heat treatment has got unique importance in the field of production industry as it helps to induce desired qualities which enable the tools to serve…

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Shearing Machines & Its Operating Safety Precautions

Guillotine Shears or Machine These are foot operated or power driven. These are used where large sheets are required to be cut with straight edges into strips and rectangular blanks. Sheet width of 600mm x 2mm thick and up to 1200mm x 1.6mm thick can be accommodated on treadle operated guillotine. Guillotines have a moving top blade, which is operated by a foot treadle and a spring, which returns the blade to the top of its stroke. The table is provided with guide to maintain the squareness of work piece….

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Machines Used Sheet Metal Workshop

When a large number of jobs are made, particularly with heavy gauge sheets, hand operations like bending, swaging and rolling are difficult, time consuming and uneconomical. To cope up with this problem, both hand and power operated sheet metal machines are developed. Some of these machines are described in the following paragraphs. Cramp Folding Machine This machine is used for folding or bending thin gauge sheet metal at different angles up to 1350. Bending arms can be adjusted accordingly, when bending sheet metal of different thickness. Slots in the bending…

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