Mechanical processing plant for nc cutting tool and the clamping method of choice

by:NJPE     2020-06-27
Mechanical processing plant, mechanical machining for processing the precision of the workpiece is relatively high, want to choose the right tool for precision machining workpieces. Tool selection should consider the main factors that have a lot of, the first is processed workpiece materials, properties, such as the material is metal or nonmetal, its machining material hardness, stiffness, how the plasticity, toughness and wear resistance, etc. Second is important to consider the mechanical processing factory to develop the processing technology of category, when choosing the numerical control turning precision machining parts, drilling, CNC milling, boring, or roughing and semi-finishing and finish machining and superfinishing, according to the machining process to determine the suitable cutting tools. Information and mechanical precision machining cutter can withstand the cutting parameter and various auxiliary factors. How workpiece geometry size, machining allowance, parts of technical requirements and economic indicators. Tool cutting dosage there are three main elements, including spindle speed, cutting speed and cutting depth; Auxiliary factors including intermittent operation time, frequency, power surge or a sudden disruption, etc. , also need to consider. Mechanical processing factory machinery processing, the processed surface of the other surface location accuracy, mainly depends on the clamping of the workpiece. Find the clamping is directly with a dial indicator, thicknesser, or visual to found in the machine tool is directly machining workpiece position of the clamping method. To align the clamping is first on the blank line according to the part drawing to draw the centerline, symmetrical line, and various processing and surface processing line, then put the workpiece loading machine, according to the row good line to find is based on the location of the clamping work-piece in the machine tool. This method of the clamping low productivity, low accuracy, high requirements for workers technical level, generally used in sheet small batch production process is complex and heavy parts, or blank size tolerance and not directly with the occasion of fixture clamping. With clamping fixture is designed in accordance with requirements by processing operations, the fixture on the positioning device can make the workpiece relative to the machine tool and tool possess correct position quickly, without looking for is to ensure workpiece clamping positioning accuracy, high clamping fixture for productivity, high positioning accuracy, but need special fixture design, manufacturing, widely used in mechanical processing plant for batch and mass production.
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