Machining procedure is one of the process documents that stipulate the machining process and operation method of parts. It is to write the more reasonable process and operation method into the process document according to the specified form under the specific production conditions, which is used to guide the production after approval. The machining manufacturers have summarized the following common tips for you:
1、 In the machining of mechanical parts, take off the jaw of the vice, process two M4 threaded holes, level two 1.5mm thick steel plates 2 with the jaw, rivet 0.8mm thick hard brass plates 3 with aluminum countersunk rivets, and fasten them to the jaw with M4 countersunk screws 1 to form a durable soft jaw. In this way, it can also protect the parts from being pinched and has interchangeability.
2、 It is not convenient to use magnet to absorb small parts (expense parts) in machining. A iron plate 2 can be sucked under the magnet 1, which can not only suck many small pieces, but also pull the iron plate apart and the small pieces will immediately automatically tilt into the collection box. It's not exciting enough, but it's practical.
3、 During the transmission of the belt pulley in the machining process, the belt pulley often slips between the wheel axle. Use a ￠ 15 ~ 18mm broaching drill to make a series of pits on the wheel axle, so as to form the adsorption force to prevent the slipping. The boss will be rewarded for turning waste into treasure.
4、 In machining, when one handle of the Allen wrench is short and cannot exert force, the pipe with the inner diameter slightly larger than that of the wrench can be milled from a section of groove, and the wrench can be inserted into the groove as a long handle.
In addition, in machining, there will be many workpieces not produced by one-time production, but when the workpieces are produced, it is just a general model. If the factory becomes a real product, it needs to use some mechanical equipment for machining, according to different product requirements for machining, and finally become a kind of Value in use products.
In order to ensure the efficiency of machining and the quality of products produced, four principles must be followed when machining.
1. Benchmark first:
When using mechanical equipment to process products, a reference plane must be determined, so that there can be a positioning reference in the subsequent processing. After the reference plane is determined, the reference plane must be processed first.
2. Division of processing stages:
When the products are machined, they need to be processed in different degrees according to different product requirements, and the processing degree needs to be divided. If the accuracy requirements are not high, then a simple rough processing stage is enough. The product schedule requirements are more and more strict, and the subsequent semi finishing and finishing stage will be carried out.
3. Face before hole:
In the process of machining, for the workpiece like bracket, it needs both plane machining and mechanical hole machining. In order to reduce the accuracy error of the machined hole, machining plane first and then hole is beneficial to reduce the error.
4. Finishing:
This processing principle is roughly some grinding and polishing processing, which is usually carried out after the product has completed the structure.
