Internal Grinding Internal Grinder is divided into ordinary and universal internal grinder . Universal internal grinder which is the most widely used grinder. Inner circle grinder can grind various shaft and the inner sleeve type workpiece cylindrical surface, conical surface and the inner surface, such as stepped shaft . The main components of the grinding bed . Grinding bed is the foundation support , on top of it with wheel frame , table, headstock , tailstock and horizontal saddle and other components. These components work to maintain the exact relative positions. Bed inside as hydraulic oil sump . Head frame for mounting and clamp the workpiece and the workpiece driven rotating head frame in the horizontal plane can turn counterclockwise 90 °. For supporting the inner circle of abrasive grinding wheel spindle bore . Grinding the inner circle by a single motor drive shaft . Wheel rack for supporting and driving high-speed rotating grinding wheel spindle . Wheel rack mounted on the saddle , when required short conical surface grinding , the wheel frame can be adjusted in the horizontal plane to a certain angular position ± 30 °. Tailstock and headstock with the support of the top piece . Saddle and cross feed mechanism rotating infeed handwheel . Can make the infeed mechanism driven wheel on the saddle and frame for the infeed movement. Bench composed by the upper and lower levels . The table rotatable about a horizontal plane under the rotary table at an angle (± 10 °)? For grinding is not a long taper conical surface , on top of the table with the headstock and tailstock . They can be together with the table along the rail bed longitudinally reciprocating motion. Machine uses: general accuracy level universal internal grinder , machine accuracy IT6, IT7 level . Machining surface roughness value Ra of 1.25 and can be controlled in the range of 0.08μm . Universal internal grinder can be used within the inner cylindrical surface of the inner conical surface finishing , although productivity is low, but because of internal grinder universal versatility is better, is widely used for single and small batch production workshop, tool shop and machine shop .
Internal Grinding speed has no effect on the processing efficiency of an internal diameter of 25 internal grinder speed is much more appropriate, parts and materials for the 2cr13, hardness after quenching 45, the choice of what material is appropriate wheel, grinding wheel feed how to select it use ordinary white corundum grinding wheel on the line, if the amount of the right to stay, then use ordinary 60 grit on the line, trimming wheel diameter preferably not greater than 20, grinding speed of 160-250 can, bore grinding feed rate is not too large, kibble is 0.008-0.015, 0.002-0.005 grinding of longitudinal table movement speed can be appropriately faster, coarse finish, finishing yarn wheel, longitudinal table movement speed of 15/min, before grinding allowance of 0.01-0.03 as appropriate.