How CNC Parts Machining Center Processes Parts

CNC machining has good flexibility and high degree of automation. It is especially suitable for processing curved and curved parts with complex contours and shapes, as well as complex boxes and prismatic parts with a large number of holes and grooves. In the case of multi-variety and small batch production, CNC machine tools are used. Processing can obtain higher economic benefits.

The processing technology of large CNC parts is basically the same as ordinary machining, but it has its own characteristics. Therefore, when designing the CNC machining process of parts, it is necessary to follow the CNC machining with good flexibility and high degree of automation, which is especially suitable for processing curved and curved parts with complex contours and shapes, as well as complex boxes with a large number of holes and grooves, and prism parts. , In the case of multi-variety and small batch production, the use of CNC machine tools can achieve higher economic benefits.

The determination of the tool setting point and the tool change point of the large CNC parts machining center. The tool setting point is the starting point of the movement of the tool relative to the workpiece during CNC machining. Since the program is also executed from this point, the tool setting point is also called the program start point or the tool start point. When programming, the selection of tool setting point should be considered first. When the machining accuracy requirement is not high, some surfaces on the workpiece or fixture can be used directly as the tool face; when the machining accuracy requirement is high, the tool setting point should be selected as far as possible on the design basis or process basis of the part, such as hole positioning It is more appropriate to take the axis of the hole as the tool setting point. The tool setting point must have a certain coordinate relationship with the positioning reference of the workpiece, so that the relationship between the machine tool standard system and the workpiece coordinate system can be determined. The selection of the tool setting point should facilitate the calculation of the coordinate value and make the tool setting convenient. When setting the tool, the tool setting point should be coincident with the tool position point. The so-called tool position point, for flat-bottom end mills, refers to the intersection of the tool axis and the bottom surface of the tool; for ball end mills, it refers to the ball center of the ball head part; for turning tools, it refers to the tool tip; for drill bits, it refers to the drill tip; The wire electrode cutting machine refers to the focus of the wire electrode axis and the part surface. When the tool needs to be changed during processing, the tool change point should be specified, and the position of the tool change point should be set according to the principle that the workpiece, fixture and machine tool should not be damaged during tool change.