Good. After Duan Yun took the order, he walked to the front of the car and took a look, then turned his head and said to Qin Shengli behind him: "Go to the workshop and call someone to move things!"

"Hey. After Qin Shengli answered, he turned his head and ran to the workshop.

Looking at the sample shell on the car, Duan Yun was quite excited.

He didn't expect the diesel engine factory to make the finished product so quickly, which shows that Yang Sheng is still very sincere about cooperating with Duan Yun.

The rest is sample testing, there is a relevant quality inspection room in the Duanyun factory, as long as the sample is qualified, then the problem of the Duanyun gearbox shell is solved.

Although the diesel engine factory has problems in the production of military engines, there is no problem in the production of the gearbox shell of this backward process, looking at Daxing and even the whole of Shanxi, it is estimated that there is no second manufacturer with better equipment and technology than Daxing diesel engine factory.

The modern automobile industry has never been a one-size-fits-all production of all advanced products, each with its own specialization, full cooperation, and scientific integration is the most scientific and efficient way.

The automobile gearbox is a high-tech mechanical product, even if Duan Yun has the knowledge reserve of his previous life, but if he wants to rely on the funds and equipment of the current large collective, it is impossible for the Jedi to make a complete set of equipment parts by himself in the short term, so he must find other manufacturers with strength to cooperate.

In addition, the overall level of the current domestic industry is not high, and it is destined to be difficult to make international advanced auto parts and equipment in a short period of time, and there is still a long way to go.

However, although it is temporarily unable to make an international advanced gearbox, Duan Yun can make the best gearbox equipment in China through technical transformation and cooperation, which Duan Yun is still confident in.

According to Duan Yun's plan, he first made a competitive gearbox product in the domestic market, and then used the price and channel advantages to continuously expand the market.

When Duan Yun has accumulated enough capital and technical reserves, he can continue to make his factory's products more competitive in China through technological innovation, and the quality and performance will continue to catch up with similar foreign products.

Time is still a little tight for Duan Yun, his current plan is three steps, the first step is to make a fist product to save the factory, improve production efficiency, and the second step is to make the most competitive products in China and seize the share of the domestic market.

Even in today's era of planned economy, there is also a commodity economy, compared with the Red Star General Factory, Duan Yun's large collective enjoys more superior policies, has a certain degree of independent pricing power, and can have more and more flexible purchase and sales channels.

By next year in 1984, Volkswagen AG will become the first world-renowned automobile company to enter China, and the first product they will launch after entering China is the well-known Santana sedan, and this is an important opportunity for Duan Yun.

At that time, the national high-level has always advocated the localization rate of Santana automobiles, and for this reason, it has also given many domestic automobile supporting manufacturers very generous support policies, but due to the weak and backward domestic industrial technology foundation in the eighties, it was not until the mid-to-late nineties that the localization rate of the first generation of Santana cars barely reached more than 80 percent, which shows the huge gap between the domestic automobile technology and the world's advanced automobile production technology.

But if Duan Yun can successfully catch this bus and become a domestic supplier like Santana Car, then even if it is just a supplier of gears, the factory's annual benefit will be very high, there is no doubt about it.

However, if Duan Yun wants to make standard spare parts of Volkswagen, this is definitely not an easy thing, and Duan Yun also needs to have a lot of capital and technology accumulation in the early stage.

As for the last step, Duan Yun has to look at the world and rely on strong capital and technology accumulation to realize his technical ambitions in his previous life, but Duan Yun still has a long way to go to complete the third step of the plan.

"Manager Duan, I've called over. Qin Shengli had already called seven or eight workers from the workshop at this time.

"Lift everything off the car and send it to the quality inspection room, taking care of it. Duan Yun settled down, counted the number of samples on the car, signed his name on the receipt and handed it to the truck driver.

At present, there are not many quality inspection projects on the side of the large collective, only accuracy and surface flaw detection, and the relevant equipment is not complete.

However, fortunately, the products of the large collective can also be inspected by the main factory, and relatively speaking, the main factory has equipment and instruments for inspection.

Quality inspection is also a very important part of the production process, in the past, the large collective was mainly the processing of unqualified 'three parts', only need a little turning and polishing, it does not need too much quality inspection equipment, but now if Duan Yun wants to stabilize the control of product quality, it is necessary to re-establish a complete set of quality inspection system.

The management, rules and regulations, and nodes of various processes involved in enterprise quality inspection must be improved step by step.

The gear inspection items include gear transmission accuracy, gear inspection overview, cylindrical gear single measurement, comprehensive measurement, gear overall error measurement, gear pair measurement, bevel gear, worm gear and worm rack measurement, gear, worm gear and worm gear mapping, gear hob, worm gear hob, gear shaper cutter measurement, etc.

According to Duan Yun's understanding, there are two types of gear inspection, one is analytical inspection, and the other is functional inspection.

Analytical testing, commonly known as single detection, generally includes tooth orientation, common normal and variation, radial runout, base joint deviation, circumferential node accumulation error, etc. This kind of detection method requires special measuring tools and testing instruments, so some small processing enterprises can not detect (mainly tooth shape and tooth direction detection to gear detector, and this instrument is very expensive. ）。

Functional testing is also called comprehensive testing, which requires a measuring instrument, which is much cheaper than the tooth profile and tooth direction detector, and is more suitable for large-scale testing with low accuracy requirements. The measured gear is detected by using the standard gear (the general accuracy is about 4 and 5 grades) that already knows the accuracy, because the accuracy of the standard gear is higher than that of the measured gear, so the detected deviation is considered to be the machining error of the measured part.

The instrument of this comprehensive inspection is referred to as a double roder, which is used to measure the radial comprehensive error and the change of the center distance of the gear subcenter. for the shape of this checker. Under the action of spring force, the measuring gear is driven by double-sided meshing with the measured gear, and the single errors such as radial runout of the ring gear and tooth shape error of the latter are comprehensively reflected as the radial change parallel to the guide rail. The magnitude is indicated by a dial gauge or recorded by a logger as an error curve.

The maximum variation of the measured gear in one rotation and one tooth is the radial comprehensive error and the radial one-tooth comprehensive error, respectively, and the maximum variation measured by pairing a pair of measured gears is the change in the center distance of the gear subcenter. The double rodent has a simple structure and high measurement efficiency, and is widely used in mass production to inspect gears with 5~6 precision.

This kind of equipment is also available in the general factory, but if Duan Yun wants to inspect more advanced gear products in the future, he needs better inspection equipment.

Therefore, Duan Yun plans to arrange for someone to go to Beijing to purchase relevant inspection equipment, even if it costs a little more money, he must buy better inspection equipment than the main factory.

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