Problems caused by improper organization of cnc processing technology
Cnc processing equipment has high power and good quality, but if the process planning is not properly organized, it can not show its advantages. From the experience of some CNC processing plants, there are some problems as follows:
1. CNC processing procedure is too lax
The reason for this problem lies in the fear of complexity (referring to the time of preparation), the simplicity of programming, the simplification of operation and processing, the ease of adjusting the tool setting when using a knife, and the habit of ordinary processing. In this way, it is difficult to ensure the product quality (orientation tolerance), and the production power cannot be used well. Therefore, CNC processing technologists and operators should be fully familiar with the common sense of NC processing, test more to grasp the relevant common sense, and use the method of process convergence as much as possible for processing, which will naturally show its advantages. After the adoption of process assembly, the unit processing time increases. We have arranged two equipment face to face, realizing one person to operate two equipment, greatly improving the power and ensuring the quality.
2. Unreasonable CNC machining sequence
Considering some problems in preparation, some cnc operators often organize the processing sequence unreasonably. NC machining is usually carried out according to the requirements of general machining process planning, such as rough machining before fine machining (tool change), inside machining before outside machining, reasonable selection of cutting parameters, etc. In this way, the quality and power can be improved.
Careful use of G00 (G26, G27, G29) fast positioning instruction G00 instruction brings great convenience to programming and application. However, if the setting and application are improper, it will often lead to negative consequences such as overshoot when returning to zero, precision decline, and equipment guide rail surface strain due to excessive speed setting. Failure to pay attention to the zero return road may lead to collision of workpieces and equipment. Therefore, when considering the application of G00 instruction, it should be considered comprehensively and not arbitrarily.
In NC machining, it is particularly important to strengthen program retrieval and trial run. After the program is input into the control system, the operator shall use the SCH key and ↑, ↓, ←, → mobile keys to perform uncertain and deterministic retrieval, and correct the program if necessary to ensure the accuracy of the program. At the same time, before the procedure processing is formally performed, the procedure test run (turn over the power amplifier) must be carried out to confirm whether the processing road is the same as the planned road.
