Things to note when machining parts in a machine shop

Release time:

2021/06/23

Source:

RUIXIN MACHINERY

Mechanical processing plant for mechanical parts processing, the workpiece is too high should be layered with different lengths of knives to open the rough, the use of large knives for rough, should then use a small knife to remove the remaining material. Apply flat-bottomed knife to process the plane, the ball knife is used sparingly in order to reduce the processing time; if there is a slope, and is an integer, apply the slope knife processing.

At the same time, set the tolerance reasonably, make the machining accuracy and computer calculation time balance each other, do more processes, reduce the empty tool time; blank material hardness is high, choose reverse milling; blank material hardness is low, choose smooth milling. Rough machining reverse milling, finishing smooth milling; tool material toughness, low hardness to adapt to rough machining, tool material toughness, high hardness to adapt to finishing.

Machining plant CNC machine tool processing on the machined parts of the clamping method should also be a reasonable choice of positioning benchmark and clamping program, in the selection of fine benchmark, generally follow the "benchmark unity" and "benchmark overlap" these two principles, in addition to these two principles. In addition to these two principles, we must also consider the processing of all surfaces in one positioning and clamping, so we must choose a positioning method that facilitates the processing of all surfaces.

The workpiece should be able to complete the processing of all surfaces of the workpiece in one clamping; when determining the placement of the workpiece on the table, it should take into account the processing of each station, the length of the tool and the impact of the tool rigidity on the quality of processing. The fixture used in the control machining should be selected as far as possible from the universal components assembled and adjustable fixture to shorten the production preparation cycle.

Mechanical processing plant to arrange the processing sequence, the basic principles must be observed, including "first face after the hole", "first coarse then fine" and so on. By tool concentration process processing, to avoid the same tool repeatedly used to reduce the number of times and time to change tools.

For the hole system with high requirement of coaxiality, the hole system should be machined in one positioning, and then the hole system in other coordinate positions should be machined after all the machining of the hole system is completed, which can eliminate the error caused by repeated positioning and improve the coaxiality of the hole system. Choose to determine the good tool point and tool change point, once determined, should not be replaced.

Key words:

Parts processing

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