1. Incorrect handling rationale
The key error of CNC machining parts is the error caused by similar machining fitness exercise or similar tool profile. Because the machining principle is incorrect, it is called machining principle error. If the key errors are within the allowable scale, the treatment of such varieties is still feasible.
2. Geometric Errors of CNC Lathes
Mechanical equipment manufacturing errors, device errors and damages in the whole process of use immediately damage the processing accuracy of the workpiece. It mainly includes lathe spindle rotation fitness movement, CNC lathe slide rail uniform linear movement and CNC lathe transmission gear error.
3. Production error and damage of special tools
The manufacturing errors, device errors and damages during the production of CNC machining tools are all harmful to the machining accuracy of the workpiece. In the whole process of laser cutting, significant friction is formed between cutting edge, drilling surface and workpiece and cutting, which may lead to tool damage. When the special tool is damaged to a certain value, the roughness value of the workpiece is improved, and the color harmony and attitude of the integrated IC are changed, causing a sensation. Tool damage will immediately damage the drilling output, processing quality and cost.
4. Incorrect tooling
The fixture errors of CNC machining parts include positioning errors, clamping errors, fixture device errors and tool setting errors. The key to this error is related to the production of fixtures and the accuracy of the assembly line.
5. The precision of parts processed by CNC lathe is not perfect. If the error is controlled within a certain scale, it is not easy to have some practical significance. Production errors and damages of special tools.
6. Incorrect positioning
Positioning error includes reference non pointing error and locator production error. When machining parts and workpieces on CNC lathes, several geometric elements on the workpieces must be selected as the positioning reference for machining parts. Assume to use the selected positioning reference and design basis (the reference is used to clear the appearance specification and position on the part drawing). If no pointing occurs, a reference non pointing error will be formed. Once the workpiece positioning surface layer and the fixture positioning component are aligned. The positioning position is inaccurate, and the large offset of the workpiece formed by the matching space of the positioning center is called positioning. The production is not accurate. The inaccurate errors in positioning and production are only formed when the conditioning method is used, and are not easy to occur in the whole process of trial cutting.
7. Incorrect conditioning
In each production process, the whole process system software shall be adjusted in a certain way from beginning to end. Because conditioning is not likely to be accurate, conditioning errors occur. In the processing system software, the mutual position accuracy of the workpiece and tool on the CNC lathe is guaranteed according to the conditioning of the CNC lathe, fixture, fixture or workpiece. When the initial accuracy of CNC lathes, tools, jigs and workpieces takes into account the technological rules of the machine rather than the daily dynamic elements, adjustment errors play a fundamental role in processing errors.
8. Measurement error
When accurately measuring parts during production or after processing, the accurate measurement accuracy is immediately damaged by the test method, measurement instrument accuracy, workpiece and subjective factors. To a certain extent, the seven kinds of processing errors can be prevented, so processing must be carried out. The actual operating staff of processing can be more careful to detect the six production processes that will cause processing errors in the whole processing process. After the actual operation of processing, the damage caused by processing errors can be reduced as soon as possible.
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