Matters needing attention in the processing of precision parts processing plants
With the rapid development of the current era, there are many mechanical equipment that did not exist in society before, which also means that the era is becoming more and more high-tech. Recently, the precision machining in the factory has also been updated, but What should be paid attention to in the process of processing?
1. Precautions for CNC parts processing
1. When the workpiece is too high, use knives of different lengths for roughing in layers. After roughing with a large knife, use a small knife to remove the remaining material.
2. Use flat-bottomed knives to process planes, and use less ball knives in order to reduce processing time; if there is a slope and it is an integer, use a sloped knife for processing.
3. Reasonable setting of tolerances, so that the machining accuracy and computer calculation time are balanced with each other, and more processes are performed to reduce the time for empty tools.
4. If the hardness of the blank material is high, choose up-cut milling; if the hardness of the blank material is low, choose down-cut milling. Roughing up milling, finishing down milling.
5. The tool material has good toughness and low hardness and is suitable for rough machining, while the tool material has poor toughness and high hardness and is suitable for finishing.
Second, CNC numerical control lathe processing technology
1. Parts clamping method and fixture selection
The clamping method of the machined parts in CNC lathe processing should also reasonably select the positioning datum and clamping scheme. When selecting the fine datum, generally follow the two principles of 'datum unification' and 'datum coincidence'. Two principles, we also have to consider:
a. Try to complete the processing of all the surfaces 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 at one time, it should be able to complete the processing of all surfaces of the workpiece.
c. When determining the placement position of the workpiece on the worktable, consideration should be given to the influence of the processing of each station, the length of the tool and the stiffness of the tool on the processing quality.
d. The fixtures used in the control processing should be assembled by common components as much as possible and can be adjusted to shorten the production preparation period.
2. Arrangement of processing sequence
When arranging the processing sequence, the basic principles must be followed, including 'face first, then hole', 'coarse first and then fine', etc. In addition to these basic principles, we should also follow the following principles;
a. According to the centralized process of the tool, avoid the repeated use of the same tool and reduce the number and time of tool change.
b. Holes with high requirements on coaxiality should be processed after one positioning, and then the holes at other coordinate positions should be processed, so as to eliminate the errors caused by repeated positioning and improve the The coaxiality of the hole system.
c. Select the determined tool point and the tool change point. Once determined, it should not be replaced.
Precision parts processing manufacturer is a manufacturer with more than ten years of CNC lathe processing and production customization, specializing in the processing of various CNC precision parts.
The company has various imported and domestic CNC machine tools, lathes, precision milling machines, precision grinders, three-dimensional measuring instruments and other testing equipment. We can not only produce various complex non-standard parts processing and hardware parts processing, but also provide various sheet metal parts according to the professional production requirements of customers.
