1. Learn from imitation and continuously improve
Usually, 80-90% of CNC custom drawing design is made after imitating and synthesizing existing technology. Make full use of other people’s experience and past experience to make them serve themselves and make continuous progress.
2. Be obsessed with design
CNC milling designers must have an aesthetic view, a sense of stability, and be able to distinguish between beautiful and unbeautiful products, stability and instability. Secondly, the designer should put himself in the shoes of the user and experience from the user’s standpoint. Confidence comes from the obsession with design, as obsessed with design as a lover, using all the energy and talent, this is the basis of confidence, but also the secret of conquering users and being liked by users.
3. Shape and structure are produced by force
Machine products are all working under load, and the design is based on the strength of the weakest part, the load is checked, and the force analysis is the backing. (In the design of electronic equipment CNC machining products: plastic parts are mainly used for rigidity checking, and metal parts are mainly used for strength checking)
4. Drawings are more important than theory, and facts are more important than drawings
The designer must use the designed drawings to express his ideas. The drawings deal with theoretical and engineering issues reasonably. This means that drawings are more important than theory; in fact, they are the source of designers. When they hear that they cannot be manufactured according to the drawings or users’ opinions, It should be taken seriously and not sloppy.
5. A deeper understanding can only be achieved after use
If the test in the factory is qualified, there will be problems in actual use, because the user’s site conditions are different from those of the manufacturer; the workers may not have mastered the essentials of operation, and maintenance is inconvenient. Therefore, CNC metal manufacturing should not only be satisfied with the original goals and requirements, collect the situation at the use site, find various problems, improve the design, ensure product quality, keep the production normal, reduce costs, and reduce consumption.
6. Don’t blindly pursue high precision
Due to large errors in assembly, the failure of normal assembly is often the source of wrangling and complaining between the processing workshop and the design department, so the designer narrowed the tolerance range. The cost of the product rises in the geometric progression of accuracy, and the designer’s slight negligence in his writing may cause the cost to rise straight. Several parts that meet the accuracy may not be able to be installed, which is a problem of the dimensional chain. Setting aside an adjustment position in a certain link of the dimensional chain, and temporarily processing after assembly, can achieve the purpose of assembly, and the accuracy is not necessarily set very strict. To engage in credible cnc high-repetition production is to ensure reliable product use, convenient operation, easy manufacturing, and simple maintenance.
7. The problem is easy to lie in the negligence
The experience of life and work enlighten us that failures and defects often appear in places that people do not expect. If people has carefully considered them, there will be no problems. For example, the strength calculation of machinery is always thoughtful about the safety of a certain part. I was afraid that it would go wrong, but there would be no problem, but the “alarm” was raised in a place that I didn’t expect. After the analysis, I found that the “alarm” was justified, and I really ignored the force analysis there.
The reason for this is negligence. When a weak link is found in the design, people must grasp it and solve it. This is a kind of ability that needs to be cultivated. Advanced designers can generally do this. Every designer should maintain meticulous, strict requirements, and perseverance from the beginning of designing. Over time, he will develop a good ability to be agile and neat.
8. Late drawings equal waste paper
The designer should pay special attention to the delivery date of the product. Why is delivery time important?
1) Manufacturers should make their own production progress of cnc machining metal parts meet the requirements of users as much as possible, and product design is an important part of the entire production process.
2) The product life cycle is shortening day by day. In order to stay ahead, the speed of technology update should be accelerated.
3) Whether there is a rhythm in production has an impact on product quality and cost. When the drawings are late, surprises in production and hasty delivery, especially inadequate inspections and experiments of the products before leaving the factory, often cause unexpected problems with the products, causing dissatisfaction and distrust of users.
4) The late drawing is the main reason for the contradiction between the physical object and the drawing. In order to catch up with the production schedule, the products cannot be processed without formal drawings, which inevitably do not match the drawings.
In addition, design is different from other work. It is a conceived and thoughtful work. It may not be carried out strictly according to the advance schedule, but it must be carried out according to the schedule. This requires more preparation, more accumulation, and maintenance of soldiers. Thousands of days, the use of troops for a while, should also take some measures to save design time, such as the use of white drawings or size tables. Often new designs are shelved, which is the result of missed opportunities.
There is PERT (programeval_ruationandReviewTechnique that is the estimation and verification technology of design workload) on the effective management method of design drawing or delivery date, and designers should master it as soon as possible.
9. Make effective use of the original design
Only 5 to 6% of the benefits, I am afraid it can only compensate for the funds spent on changing the design. When changing the design, the situation of finished products and semi-finished products should also be taken into consideration and used as much as possible. There must be reasons for changing the design, but the impact on production after the change and the possible new contradictions should still be considered.
Sometimes it is found that the original design principles of precision metal parts are wrong and must be completely changed. At this time, the design leader has a heavy responsibility. Whether to push it back or tolerate it, it is necessary to look at the overall situation and make decisive decisions.