One, seven (tolerance)
1. The machining accuracy must meet the standard, that is, the tolerance must meet the design requirements;
2. Marking tolerance is to ensure the interchangeability and assembly quality of equipment parts;
3. Tolerances are divided into basic tolerances and three kinds of limit tolerances.
Second, eight mothers ("sows feed piglets")
1. Construction machinery and equipment must meet relevant standards;
2. Equipment installation should follow the technical conditions, process and specification requirements;
3. The design and construction drawings shall be clear and definite, and reasonable modifications and adjustments shall be made during the construction.
Sanjiu law (mechanical automation manufacturing process, etc. )
1. Design, production, transportation, installation, commissioning, acceptance, maintenance, renewal and scrapping shall comply with relevant laws and standards;
2. Strictly implement relevant management systems and operating procedures such as electromechanical safety;
3. Find problems and solve them in time, and don't hide, overlap and perfunctory.
Fourth, very check
1. The equipment shall be inspected upon arrival to verify the quantity and quality of the goods;
2. Check the appearance and size of the goods, whether they meet the technical standards and whether the packaging is in good condition;
3. If there is any problem, communicate with the supplier in time and ask for replacement or maintenance.
Verb (abbreviation of verb) 1 1 debugging
1. After the equipment is in place, the working performance should be debugged to ensure that all indicators of the equipment meet the design requirements;
2. Before debugging, operate according to the operating instructions of relevant equipment, and pay attention to safety;
3. Problems in debugging should be handled in time to ensure normal use.
Six, a few points for attention
1. When designing and manufacturing mechanical and electrical equipment, we should pay attention to the universality and nesting of the equipment;
2. In the process of using the equipment, the specified working system and operating procedures must be followed;
3. Pay attention to equipment maintenance and implement regular inspection and preventive maintenance;
4. If there is any equipment failure, it should be eliminated and recorded in time;
5. Promote the technical improvement of equipment, and constantly improve the efficiency and safety of equipment use.
Seven, mechanical and electrical practice exam points
1. Master mechanical automation manufacturing technology, mechanical and electrical product quality inspection and reliability test, mechanical and electrical equipment installation engineering construction and quality acceptance, etc.
2. It is suggested to read more well-known exam guidance books to find out the key points and difficulties of the exam;
3. Understand the real questions over the years, and master the test trends and the rules of question types;
4. Pay attention to the mastery of basic knowledge, and on this basis, use the idea of doing the problem flexibly.
Eight. conclusion
The mechanical and electrical practice formula of the first-class constructor is consistent from beginning to end. From the aspects of machining accuracy, equipment installation, design and construction drawings, inspection and debugging, etc. , pay attention to ensure safety and achieve results.
In preparing for the exam, we also need to grasp the necessary knowledge points and use the thinking of doing the questions flexibly. In normal work, pay attention to the maintenance of mechanical and electrical equipment, improve the efficiency and safety of equipment, which is conducive to improving the quality of work.