Non-standard equipment refers to the special non-standard equipment that the country does not have mass production, but various departments of the national economy do need special non-standard equipment. Non-standard equipment is not designed and manufactured in accordance with the unified industry standards and specifications promulgated by the country, but is designed and manufactured according to its own needs.
In the increasingly fierce market competition environment, industrial enterprises have carried out institutional and technological innovations, replacing traditional equipment with computer-controlled automation equipment, and replacing pure manual operation with mechanical equipment operation.
The demand for non-standard automation equipment has also increased. How to do a good job in the design of non-standard automation equipment has become a common concern of related units and personnel. Let’s discuss it with you at a small speed below.
1. The design process of non-standard automation equipment
(1) Determine the development project and understand customer needs, including product quality requirements, equipment production efficiency requirements, and equipment working environment.
(2) Analyze the product, understand the production process, understand the size requirements and incoming materials in all aspects of the product, and communicate with customers the precautions during the production process and the technical parameters of the equipment use location.
(3) Draft a plan. The equipment plan is discussed and analyzed by the engineering personnel. The plan includes: equipment schematic diagram, brief introduction of each part of the organization, action description, and equipment technical parameters.
(4) Plan review. An audit team is formed by engineering personnel to review the plan. The audit content includes: equipment feasibility assessment, equipment cost assessment, equipment production efficiency assessment, and structural feasibility assessment of each part.
(5) Plan rectification. Rectify the problems discussed in the program review.
(6) The customer determines the design plan. The design plan is handed over to the customer, and the customer finalizes the plan according to the needs.
(7) Design and development. The engineering department arranges engineers to design the mechanism, make machine assembly drawings, parts drawings, select executive components, electronic control accessories, and list the processing parts list, standard parts requisitions, and operation instructions.
Although non-standard automation equipment does not have a large quantity of standard equipment, it has a wide variety of varieties and serves various departments. With the rapid development of today’s social sciences, the new technological revolution puts forward higher requirements for mechanical design.
Due to the variety of non-standard automation equipment, the design work is more difficult. This requires non-standard design engineers to have good professional qualities, broad knowledge, good flexibility and originality, be good at inferring from one another, have more ideas, have original insights, and be able to transplant other institutions. And integrated into their own design intent.
(1) The production of non-standard equipment is small batch production in a single piece, and relevant designers have experience and technical requirements. In terms of design of non-standard equipment, the Chinese standard system and standard system of non-standard equipment are mainly adopted, and the principle of “primary film stress or maximum direct stress shall not exceed allowable stress” is followed. In terms of safety factor, the design of non-standard equipment mainly considers stress concentration Its type, complexity of stress assessment methods, material inhomogeneity, geometric factors, defects in welded joints and other factors.
(2) In the design of non-standard equipment, first of all, in the selection of standard parts, finished parts should be used as much as possible to effectively reduce the cost of non-standard products in terms of raw material consumption, management expenses, and yield. The use of finished parts can also make the equipment have better reliability after being put into the market, extend the design and manufacturing cycle of the equipment, and improve the design efficiency. Secondly, in the design of non-standard equipment, on the basis of meeting the process design conditions, the technical plan of the equipment must be carefully studied to determine the advanced, reasonable and stable non-standard equipment.
Finally, in the design of non-standard equipment, we should also uphold the humanized design concept, repeatedly measure whether the use of the equipment conforms to the usage habits of workers, and pay more attention to details.
(3) When designing non-standard equipment, in addition to considering whether the design meets customer and production needs, it is also necessary to consider whether the structure of the non-standard equipment is reasonable, whether it is safe and stable, easy to process, manufacture, install and maintain. , The designer must strictly implement the relevant standards and specifications, fully understand the process requirements, physical parameters and functions of the non-standard equipment, and compare and select multiple plans to determine the best plan. On the other hand, designers should pay attention to the rationality of the design of non-standard equipment parts. When designing, they should check whether the parts meet the requirements of rigidity, strength, etc., and choose the materials, matching types and processing methods of the parts reasonably. .
(4) Achieving standardization in design work is the institutional prerequisite to promote the smooth development of design work and facilitate the introduction and absorption of advanced foreign technologies. The quality of the design work is directly related to the level and quality of non-standard equipment. Standardized design work must draw up strict design procedures, methodically demonstrate technical plans, design and construction drawings, and review process performance and standardization. In the standardization of drawings and design documents, it is necessary to check whether they comply with relevant national regulations. Strictly review terms, terms, symbols, format, format, name, code name, etc., and implement relevant standards and specifications for design work.
To do a good job in the design of non-standard equipment, we must not only consider process and technical issues, but also give priority to its effects and benefits, and use them as the main criteria for judging the success of non-standard equipment. The things designed by non-standard equipment should be convenient for maintenance and processing, and processing issues should be considered when designing.
For example, try not to drill holes on the arc surface. If you must drill, you must go through the center or the platform first and then drill the hole. . For the product sub-components and parts designed for non-standard equipment, inquire on the market, and try to use common parts as far as possible to facilitate maintenance and exchange.
