Constructional detail of shaper is shown in Figure 19.25. Following are the parts of the shaper machine.
Figure 19.25 Constructional Details of Shaper
Base: Base is made of grey cast iron to absorb the vibration and it is bolted to shop floor.
Column: It is housing of ram, quick return mechanism, and table. A ram reciprocates on the top of the column through two machined guideways and table can move up and down through cross-rail on the front of vertical face of the column.
Table: It is a cast iron body provided with T-slots to clamp the job, fixtures, etc. Table can move up and down and also it can be tilted in universal type shaping machine.
Ram: It carries a tool head on its front end. It reciprocates on horizontal guideways of the machine on the top of the column across the work. The motion of the ram is obtained by quick return mechanism. It cuts only in the forward stroke and moves faster in the backward or return stroke.
Tool Head: It is fixed at the front end of the ram. It consists of tool post, clapper box, and down feed screw. Tool slide can be swivelled for the shaping of bevels, angular cuts, etc. The clapper box hinges on a pin in order to allow the tool to swing up during the return stroke. Down feed screw may be operated by hand or power for required depth of cut and down feed cutting.
Cross-rail and Saddle: Cross-rail slides up and down for positioning of the table over the front vertical ways of the column. The work table is bolted on the saddle and saddle is also mounted on the cross-rail. The work table along with the saddle can be moved horizontally by the table cross-feed screw.
Leave a Reply