Monster Factory Chapter 76: : Master, what you said is **** to us

　　 A claw hammer was quickly brought in. If it weren't stopped by the older worker, the worker who took the claw hammer must have been a flying hammer and smashed Master Craftsman down the stairs.

　　 smashing this little old man down was the thought of everyone including Li Huaxing.

　　 It’s not like that for hitting people, right?

　　 is too perfect in their eyes. There is nothing to praise for a product that is as precious as a child?

　　 "You come down!" Someone who was already grumpy began to roar outrage(d).

　　"Come down, we have a kind of open posture to compare, even better than precision."

　　 It didn't matter before, his expression could not be moved by any scene, and disappeared from Master Craftsman's face.

　　 was replaced by a dismissive arrogance. In the sharp eyes of an eagle, there was a high look down.

　　 At the voice of the crowd outrage(d), Master Craftsman spoke.

　　 A word, they instantly turned into a bombed silence.

　　"On both sides of the frame beams, I can see that its straightness error exceeds 0.07 mm/1 meter."

　　"The 12-meter-long beam, what do you think the distortion is like?"

　　"The distortion became a crawler, tell me, what is this qualified product?"

　　 Everyone's outrage(d) was blocked in their throats by Master Craftsman.

　　The straightness error of the girder......

　　 The 12-meter-long beam is a whole, the larger the part, the more difficult it is to processing. Master Craftsman means that these two girders are distorted and distorted, and no one meter is straight.

　　Master Craftsman is right. The beam milled by a large milling machine has a certain precision error. When it is hoisted to the frame for welding, the high temperature thermal deformation caused by welding makes the precision error of the beam even greater.

　　 The error here worker can be measured, but within a certain range of error, worker think it will not affect the vehicle.

　　 But how did this little old man see it?

　　 Chief Engineer Wang Caiqi couldn't help but blush. He knew that this error was one thing, and being pointed out instantly was another.

　　 Although there is no problem. But this error is really too big. Putting it on the ordinary car is definitely a substandard product.

　　 They want to know, but Master Craftsman did not give them a chance to ask questions.

　　"Look at the housing of your engine reducer again. Is that round? I just drew a circle, which is higher than its precision."

　　"It’s really ridiculous. Look at the distance between the screw holes in your reducer housing. The distance is so large. Is it money or time?" Master Craftsman wielded the claw hammer: "I can guarantee that it will not be used for a year, reducer housing It’s about to start showing lubricating oil."

　　"This is simply rubbish, **** designed without experience."

　　The housing of the reducer is cast iron. The size of the cast iron merely is actually immense. And the reduction gear inside does not need to be in contact with the housing, so it is not so particular about precision......

　　 As long as the borehole precision connected to the crankshaft of the engine controls the then it will be alright, anyway, the tolerance of the space at the beginning of the design is large enough, and the extra right should leave room for the lubricant.

　　From the perspective of pursuing efficiency, chief engineer Wang Caiqi is not wrong with this design.

　　 There are so many parts for a mining truck. In order to save time and cost, unnecessary links can only be simplified as much as possible, which is a common practice for many Heavy Industry companies.

　　 But!

　　 Master Craftsman’s sentence suddenly made Chief Engineer Wang Caiqi realize that he had made a terrible mistake, and it was also the most classic dogmatic mistake.

　　 He put the original 190-ton gearbox on the 240-ton gear, and there was nothing wrong with it.

　　 But he actually enlarged the design that originally required 48 screw holes to seal the shell to 240 tons without any increase.

The larger the size of 　　 means that the spacing between the same number of screw holes becomes larger.

When the distance between 　　 increases, the tightening ability will naturally decrease. After a long period of time, the gaskets must be severely worn out, causing many oil leaks, — —, which is often caused by domestic products.

　　 Everyone screamed in cold sweat. Chief Engineer Wang Caiqi's face was pale, and he subconsciously touched his jacket pocket, took out the notebook he carried with him, and quickly recorded this monstrous mistake tremblingly.

　　Wait for him to write down this time using a quick record method that only he can understand. Chief Engineer Wang Caiqi wiped the cold sweat severely and let out a cold breath.

　　 Then he turned his head and found that all the workers around him had taken out their notebooks or cell phone, and quickly recorded this fatal flaw with lingering fear.

　　 It can be said that if today’s Master Craftsman hadn’t given them the initiation, they would like to discover this neglected detail, only after the product was delivered to the customer, after one or two years of use, they were swarmed by the following Only when the incoming questioning call breaks can we organize the technical staff to study it out.

　　Unfortunately at that time, their brand reputation will be affected, and they will be crowned as unreliable, leaking, and defective in design, děng děng|etc|wait.

　　The more complex the product, from the design to be truly mature and reliable, it needs a series of improvements and numerous losses before it can be perfect.

　　 Master Craftsman's words directly made them avoid a big pit.

　　"Look at your hydraulic lifting device again, the four main hydraulic lifts are so close, do you want to go through the carriage?"

　　"Look at your turning again, I would trouble you to take a ruler to measure it, and measure its spacing..."

　　"Look at your suspension design again..."

　　Master Craftsman stood on the high console, talking endlessly without any pause. At this time, in the ears of those below, all the words he said had become the most beautiful notes in the world.

　　 Even those mantras that open up **** and close up are unqualified have become so sweet.

　　 They became listeners of the Tao at this time. The disdain in their hearts before has been transformed into an extreme admiration, and a worship that even ten cows can't move.

　　沙沙沙~

　　 These are a few technicians who quickly record the sound with the pen and paper they carry with them.

　　 They are so intoxicated that they have written down all the words like garbage and unqualified.

　　 Li Huaxing’s performance at this time is really not much stronger. He is already standing next to a technician, reviewing every word like a manuscript, preparing to wait for the transcription to be completed, and immediately copy a copy and take it back to the office. Door study.

　　 "He... isn't he the guard, who is in charge of the door..." The bodyguard who is stuck in place like a wooden stake, his brain has crashed, and Bill Gates can't solve the messy code when he comes.

　　"Look at the telex system you designed. I can only use garbage to describe it. The variable speed gear of the DC motor is obviously..."

　　"Cough cough ~ cough cough ~" Ye Qing heard Master Craftsman even commented on the core technology of mining trucks, DC motor drive system, immediately throwing his eyes with reminders.

　　Master Craftsman was silent abruptly, causing the following group of technicians and worker, who had already washed their ears and prepared to listen, immediately became anxious.

　　 "Master, please keep talking." The worker who wanted to use a hammer to knock him down has now become a better learning model than the best students. cell phone directly turned on the video recording function.

　　 "Master, you continue to say, 10 million don't stop." Chief engineer Wang Caiqi is climbing the construction support at this time. He wants to get to Master Craftsman and listen to the teachings up close.

　　"Master, continue, our junk product still has many technical defects, waiting for your explanation."

　　 "Yes, yeah." The following technicians nodded frantically, and threw the previous outrage(d) to Java.

　　What an international joke, the respectable old man in front of me is definitely a world-class master, and he may even have served as a top technician in Caterpillar Company. His words are worth ten years of deliberating. .

　　 "It's all rubbish, I can't finish it at all." Master Craftsman hummed twice and walked along the road-like spacious frame to the rear axle with the immense DC motor plugged in.

　　 The silver-white drive shaft, which is one meter thick and eight meters long, shines like a mirror, was exposed to Master Craftsman's eyes.

　　Master Craftsman flexibly jumped onto the rear axle and hit the power shaft of the immense hard with the claw hammer in his hand.

　　当啷~

　　 A clear and melodious metal impact sound passed to everyone's ears.

　　 No one dared to speak, and even his breathing was temporarily closed.

　　Because of Master Craftsman, I am closing my eyes and putting my hands around my ears to listen.

　　 When the melodious impact disappeared, the Master Craftsman jumped to the other side and hit the power shaft again.

　　"This can also be called a power shaft? There are even hidden injuries in the middle, and the problem lies with it."

　　Master Craftsman returned to the construction rack in a disgusting manner, and said to the worker and technicians who stretched their necks and waited for instruction: "Who is responsible for producing such a garbage power shaft?"

　　, including Li Huaxing, everyone looked at a technician in gray overalls.

　　 They have unconditionally trusted the ability of the Master Craftsman. With only a claw hammer, they can listen to the sound of a hidden wound in the spindle. What kind of magical skill is this?

　　"Boss...I..." This young technician flushed red, and said hesitantly: "The precision of the power shaft is not...no problem, I can guarantee it."

　　"Every step of worker is strictly in accordance with the production process, precision will not...have a problem."

　　"Master Clever!" The chief engineer Wang Caiqi kept scratching the silver-gray hair on his head at this time, and he was also puzzled: "If the spindle precision is not enough, it should be stuck directly, and he can't walk in one step. It obviously ran more than ten kilometers."

　　 "Your requirements for precision are so low that I feel desperate..." Master Craftsman shook his head.

　　"But the problem is not precision, although precision only meets the minimum requirements."

　　"The materials used are too rubbish, the processing technique is too rubbish, and the quenching method is too rubbish." Master Craftsman touched the power shaft: "The DC motor in the center of the power shaft gradually accumulates heat during work, causing the power shaft to produce a slight Thermal expansion."

　　"You must have never calculated the thermal expansion coefficient of the spindle~IndoMTL.com~ and also overestimated the quality of this DC motor."

　　Heat......Coefficient of thermal expansion......

　　 Chief Engineer Wang Caiqi was struck by lightning, and his body trembled violently. He was even more excited than a monk who had once enlightened him.

One word 　　 wake up the dreamer!

　　 It’s no wonder everything was normal when it started, and it got stuck after running for more than ten kilometers.

　　 When they drove the mining truck back to the workshop and unloaded it for research, the temperature of the power shaft had already dropped and naturally no precision error could be detected.

　　When the 190-ton mining truck was produced, it was directly purchased from foreign mature technology. This problem has never occurred.

　　 The 240-ton-class spindle material developed by 　　 has always been 190-ton spindle material, so the culprit is naturally the DC motor.

　　As long as you work **** the heat dissipation of the DC motor, you can solve the problem of jamming.

　　 That's how it is, that's how it is.

　　Large mining vehicles are all engines, which drive the generator to work, and then generate immense electricity to drive the DC motor on the rear axle.

　　 The DC motor of 190-ton mining truck and the DC motor of 240-ton must be two designs.

　　Then just redesign the DC motor...

　　How to design it......

　　 Chief Engineer Wang Caiqi was just about to scratch his head and head, and as soon as his hand touched his hair, he suddenly dropped down and patted his thigh.

　　The world-class master is right in front of my eyes, and I still want to make an axe to design a motor...

　　haha ~

　　merely, their Board Chairman this time is about to bleed~ IndoMTL.com~ Book friends are welcome to visit and read, the latest, fastest and hottest serial works are all at ~ IndoMTL.com~cell phone customer(s), please go to read.