Design and Fabrication of Dual Side Shaper Machine Project
Design and Fabrication of Dual Side Shaper Machine Project report
Abstract: This paper describes about dual side shaper machine using a scotch yoke mechanism which can be used in industries for cutting process. A Shaper is a machine used for shaping (metal removal) operation on the work piece. A usual shaper machine operates by a principle of whit worth quick return mechanism where materials are processed at one end and other end remains idle. But in a dual side shaper machine, materials are processed at both ends which become advantageous when compared to usual shaper. Nowadays, Industries try to achieve high production rate at a minimal amount of time, cost etc. Usage of dual side shaper machine eliminates most disadvantages faced by a single side shaper. The main advantage of dual side shaper is that it decreases time as well as production cost. Thereby it increases productivity. Another advantage is that number of moving parts is less when compared to usual machine. This model uses a single power source which can be connected to gears for increasing or decreasing the speed of cut.A Shaper is a type of machine tool that uses linear relative motion between the work piece and a single-point cutting tool to machine a linear tool path. Its cut is analogous to that of a lathe, except that it is linear instead of helical. The work piece mounts on a rigid, box-shaped table in front of the machine. The height of the table can be adjusted to suit the work piece, and the table can traverse sideways underneath the reciprocating tool, which is mounted on the ram. Table motion may be controlled manually, but is usually advanced by automatic feed mechanism acting on the feed screw. The ram slides back and forth above the work. At the front end of the ram is a vertical tool slide that may be adjusted to either side of the vertical plane along the stroke axis. This tool-slide holds the clapper box and tool post, from which the tool can be positioned to cut a straight, flat surface on the top of the work piece. The toolslide permits feeding the tool downwards to deepen a cut. The tool-slide permits feeding the tool downwards to deepen a cut. When a load is placed on the input rod of the scotch yoke by an actuator, sideward thrust causes the input rod and yoke arm to bow and twist. This increases the friction on the sliding nut. At the extreme positions of travel of the sliding nut, the bowing and twisting become severe and the yoke arm tends to bind. Diagrammatic representation of tool feed direction.