How to advance machining power in the process of machining large mechanical parts?

With the continuous development of fine machining profession, the precision requirements of machining are also advancing. Fine machining technology is a manufacturing technology used in recent years, so it is more suitable for thin-walled parts. In addition, how to advance the machining power better service in the process of machining large mechanical parts also became a big problem at that time. The editor reviewed relevant materials summarized them as follows:

Processing power of advanced fine parts:

In the process of fine parts machining, there are some common problems, such as the accelerated tool wear, the poor integrity of machining surface, the difficulty of chip removal, which seriously affect the quality, production cycle machining cost of such materials.

According to the theory of metal technology, metal cutting fine parts processing, the difficulties of the above materials processing are analyzed, a set of effective drilling, reaming boring technology for stainless steel materials is explored.

The machining of fine parts requires super lubricated machining surface high machining accuracy, which requires a high standard life of the cutter. Whether the cutter is worn will be based on whether the machining surface quality is reduced .

The standard life of diamond tool is very high, the tool wear is very slow in high speed cutting. Therefore, the cutting speed is restricted by the tool life, which is different the general cutting rules.

The selection of machining parameters of fine parts mainly includes the selection of cutting tool viewpoint, cutting speed, cutting depth feed speed. the past experience, we know that if a tool with a larger rake angle is selected in the processing of plastic materials, it can be used to suppress the formation of chip accretion. This is the basis of the formation of chip accretion when the rake angle of the tool increases, the cutting force decreases, the cutting deformation is small, the touch length between the tool chip becomes shorter.

Inspection requirements inspection procedures

Inspection requirements; quantity inspection; based on the supply contract processing voucher, strictly check the raw materials, standards quantity of the processed parts against the drawings, check verify one by one, make a record of quantity inspection, indicate the inspection address, time, participants, type, product name, expected actual quantity. Check the appearance; check whether the finish of the machined part meets the requirements of the drawing, check whether the surface of the machined part is damaged, rusted, bruised, whether the thread shape viewpoint are correct.

If the above problems are found, specific records shall be made for inspection. Quality inspection: Assembly shall be carried out in strict accordance with the rules procedures required by the general assembly drawings, records shall be made carefully during quality inspection. In case of any quality problem of the processed parts, the outsourcing processing unit shall be informed in writing of the specific situation. Decide whether to return replace according to the situation. If there are special requirements, find the processing unit for joint inspection assembly, sign the inspection document only after the installation is qualified.

Inspection procedures: if there are quality problems, return, claim undertake economic losses to the processing unit. Generally, the processing contract signed by the production department will be inspected directly by the Department in use, the inspection report will be filled in. For the unqualified parts, the inspection personnel must handle the repair return procedures within the regular inspection period. For the inspection of special fine processing parts, the full-time inspection personnel shall arrange relevant personnel for joint inspection fill in the inspection report. For the unqualified parts, the inspection application form shall be filled in in detail, as the condition for the processing accuracy to be advanced the selection direction of the outsourcing manufacturers of the parts to be processed in the future shall be determined.

In addition to these, there is a particularly important problem for the processing of large-scale mechanical parts, which is also described in the small edition here. This is the most commonly used one. After the large-scale mechanical parts are received, both full-time inspectors are sent to inspect the raw materials, standard models quantities of the processed parts according to the requirements of the contract reference drawings. The inspection period is generally 1-2 days 。 Special situation depends on application effect.