Things to pay attention to during the processing of precision machinery processing plants

With the rapid development of the current era, there are many mechanical equipment that did not exist in the society before. This also represents that the era is becoming more and more high-tech. Recently, the precision machining in the factory has also been updated. What are the things that need to be paid attention to during processing? Let's go and find out with the editor.
1. Precautions for CNC machining
(1) When the workpiece is too high, use different lengths of knife to roughen it in layers. After roughing with a big knife, you should use a small knife to remove the remaining material.
(2) Use flat-bottomed knives to process planes, and use less ball knives to reduce processing time; if there is an inclination and it is an integer, use an inclination knife to process.
(3) Set tolerances reasonably to balance the machining accuracy and computer calculation time. Do more procedures to reduce the time of empty tools.
(4) If the rough material has high hardness, choose up-cut milling; if the rough material has low hardness, choose down milling. Roughing up milling, finishing down milling.
(5) The tool material has good toughness and low hardness for rough machining, and the tool material has poor toughness and high hardness for finishing.
2. CNC machining technology
(1) Part clamping method and fixture selection
The clamping method of the processed parts on CNC machine tools should also reasonably choose the positioning datum and clamping plan. When selecting the precise datum, the two principles of 'standard unification' and 'standard overlap' should be followed. In addition to these two principles, we have to consider:
a. Try to complete all surface processing in one positioning and clamping. Therefore, choose a positioning method that is convenient for all surfaces to be processed.
b. When the workpiece is clamped once, it should be able to complete the processing of all the surfaces of the workpiece.
c. When determining the placement position of the workpiece on the worktable, consideration should be given to the processing of each station, the length of the tool and the impact of the rigidity of the tool on the processing quality.
d. The fixtures used in the control processing should be assembled from common components as much as possible and can be adjusted to shorten the production preparation cycle.
(2) Arrangement of processing sequence
When arranging the processing sequence, the basic principles must be followed, including 'face first, hole second
a. According to the tool centralized process processing, avoid the same tool multiple times and reduce the number of tool changes and time.
b. For the hole system with high coaxiality, after one positioning, the hole system should be processed completely, and then the hole system at other coordinate positions should be processed, so as to eliminate the occurrence of repeated positioning Error, improve the coaxiality of the hole system.
c. Choose to determine the tool point and tool change point. Once determined, it is not suitable to change.
The above is the editor's introduction to the things that need to be paid attention to in the process of precision machinery processing plants. If you have any questions, please consult this site, website address: http://www.dghongye.com