The contents of the precision machining

The contents of the precision machining

Precision machining is technically difficult, has many influencing factors, involves a wide range of aspects, has a large investment intensity, has a strong product personality, and its main contents include the following aspects:

(1) Processed materials: The processed materials processed by precision machinery have strict requirements on chemical composition, physical and mechanical properties, chemical properties and processing properties, and should have uniform texture, stable performance, and no macro and micro defects.

The processed materials that meet the performance requirements can only get the desired effect of precision machining.

(2) Processing equipment and process equipment: precision machining should have high precision, high stiffness, high stability and automation of machine tools, the corresponding diamond tools, cubic nitriding jumping tool, diamond grinding wheel, cubic nitriding grinding wheel, and the corresponding high precision, high stiffness fixture and other process equipment, in order to ensure the quality of processing.

Precision machining should first consider to have the corresponding precision of the precision machining machine tools, many precision machining is often from the design and production of its ultra-precision machine tools began.

And you want to configure the required tool.

At present, the general series of precision machining machine tools is less, the batch will not be large.

Precision machinery national engineering machine tool cost is very high, need to special order, if in the existing precision machining machine bed processing can not meet the requirements.

The processing accuracy can be improved by using process measures or error compensation.

(3) Testing: precision machining must have the corresponding detection technology to form the integration of processing and testing.

There are three ways for precision machining detection: offline detection, in-place detection and online detection.

Offline testing means sending the workpiece to the inspection room for testing after the processing is completed; in-site testing means that the workpiece is not unloaded on the machine tool after processing is completed, before processing; online testing is testing during the processing process so as to actively control and implement dynamic error compensation.

Error compensation is an important measure to improve the machining accuracy, is on the basis of the machine tool manufacturing accuracy has reached a certain level.

The influence error is isolated, and the error value is compensated by using the error compensation device.

Static error compensation is based on the error value of the side by hardware or software during processing, such as the pitch error of the machine drive wire can be compensated by the correction ruler; dynamic error compensation real time compensation during processing.

The on-line detection and compensation technology of precision machining is the key technology of precision machining.

The detection technology into the content of precision machining, the use of online measurement, can enable the operator to find the problems of the workpiece in time, and feedback to the numerical control system.

Precision machining