Universal Milling Machine Test Run

Do you know the difficulty of producing the universal milling machine?

Elements of measuring milling machine or universal milling machine have three main points: First, the function; Second, the performance; Third, precision. This is the main basis for the detection of #UniversalMillingMachine, but also test of the manufacturers' ability.

1. Function. The main functions of milling machine include vertical milling function, horizontal milling function and various combination functions.

2. Performance.It is important that the operation of the milling machine is convenient, safe and reliable.

3. Precision. The accuracy of the universal milling machine is an important basis for determining whether the milling machine can process high-precision workpieces.

The main difficulty of producing universal milling machine is milling head. Because the universal milling head is two 45-degree joint surface. The accuracy of these two faces is the most difficult to process. Even a small error will cause the milling head rotation error.

So make sure that the two parts of the universal milling head have a 45 degree angle that can be accurate. So the processing equipment requirements will be higher. And the combination of milling head gear is equally important, indispensable. The accuracy of the milling head itself determines the accuracy of the milling head rotation, combined with the gear on the noise and the life of the machine has a key role.

Only to clear the difficulties of universal milling machine production, and strive to break this difficult, we can produce high-quality universal milling machine.

Tips of simple universal milling machine repair

Today, let's talk about how to check and repair if there are some small faults in universal milling machine.

Because most of the faults are inside the machine tools, it is difficult to see them intuitively, which brings us some difficulties in checking the #UniversalMillingMachine.

First, the machine body check. Mainly to check whether the universal milling machine spindle is loose.Remove the cover plate of the spindle box and use a screwdriver to pry it out of the slot of the lock nut until the power is turned off. Then, use the return iron, do not live in the main shaft, adjust the nut on the main shaft bearing with a screwdriver, so as to reach the tightness. Sometimes it is necessary to check whether the gears are damaged or not, and carefully eliminate all the faults that may occur in the milling machine.

Second, universal milling machine circuit inspection:

1, the same type of contactor coil can be replaced according to the existing conditions, and the contactor can also be replaced.

2, if the winding or resistance is very small, should be judged as the contactor coil burned, can be replaced according to existing conditions of the same type of contactor coil.

3, in case of disconnecting the power supply, use the multimeter resistor to measure a set of normally closed contacts of the spindle speed change switch.

4, press the operation button, use multimeter resistor files to test whether SB1 and SB2 are reliable, find out which button is not connected properly, or press not to access.

5, carefully check the universal milling machine control circuit, the joints are burned or because of vibration caused by poor contact, check a joint contact is not good, to re compression joints.

6, in the case of disconnecting the power supply, you can also use the multimeter to open the contactor arc cover, with a screwdriver handle, make the contactor closed movement artificially, and then test the contactor KM3 self-locking point whether it can be closed.

The above is my experience in universal milling machine troubleshooting Of course, the machine tools usually need good maintenance to maintain the normal working state, which can not be ignored.

The view of mother's back

By Qingming Gao (CEO of Tengzhou Sanzhong Machinery Manufacture Co.,ltd)

May 14, 2017 is a #Mother'sDay, a great festival. The reason why it is called for the great festival is because the mother's greatness. Mother gave us life and nurtured us. Only mother's love is selfless, do not seek return, and mother can give her everything and even life for her children.

Early in the morning, I bought two boxes of honey and drove to my mother's house. My mother and I live in two different cities, but no matter how busy I am, I always go home. Every Sunday, mother would stand in front of the balcony waiting for her children to go home. Every time I see the view of my mother's back, I can remember many memories. Mother's figure has been strong and straight, but now it has become a curved back.I always think of a song "where did the time go": in front of the tree in the wood and long bud, flowering, life saved a lot of words, hidden in the white haired...... Where have all the time gone? Not a good look in your eyes just spent half a lifetime, it will only face wrinkles......

Although my parents are already 86 years old, but still very hard-working, every day is not idle. Look at my mom's garden. There are pomegranates, walnuts, apricot trees, and all have already turned out.

Even if there were only a few strawberries, my mother would have to wait for the children to come back and have a taste. This is her happiness. Do you taste sweet when you come back? Even if it is not sweet, we will say it is sweet, so we can see our mother's contented smile.

I said to my mother: "you work very hard, don't plant again, and you should enjoy the blessing." Mother always says, "we grow vegetables and fruits, so you can eat fresh food when you go home." 

I think that's what my parents think. They always want to leave the best for the children. There is an old saying in China: "son wants filial piety, but kisses not.". It means that now go to filial piety parents, do not regret for yourself. Filial piety culture is needed in the world. Wish the parents of the world healthy, long life and happiness!

Best wishes to all mothers!

#MothersDay

Integration of Internet and Machinery Manufacturing

 Internet in the world, the global economic development has gained a strong impetus, the degree of globalization has been deepened. While the convenience of human life is also greatly improved. The Internet achieves "zero distance" between different countries around the world.

Such as global exchange so that people enjoy the fun of global shopping. There is no doubt that this is the Internet's great contribution to mankind. Although there are questions about the globalization of the Internet, I think everything has two sides, like the human hand is also different on both sides. Therefore, how to avoid risks and disadvantages, to maximize the advantages of Internet globalization is particularly important.
With the continuous development of the

I am not a philosopher, no more philosophical talk. But I (Qingming Gao) was a man of the machinery manufacturing industry for 33 years. In the use of the Internet and related technologies, I feel that there are still many deficiencies.

The machinery manufacturing industry develops with each passing day. Only by improving ourselves can we survive and develop. I also want to use the Internet related channels, with more experts in terms of technology, marketing and management to communicate, to achieve win-win cooperation. Products are the best place to reflect the differences between companies. Our main products are universal milling machines, we hope and engineers around the world and traders to communicate, make universal milling machine have a greater breakthrough in technology, set up more sales channels in global wide range.

Mutual assistance, cooperation and win-win situation is my company has always insisted. We can see that the different countries in the world due to the different levels of development and the corresponding development needs are not the same. The rapid development of the US economy has also brought greater development to the world economy. The same since China's reform and opening up to our lives has brought great changes. But we can still see some underdeveloped countries and regions, industrial development is still relatively backward, or even stagnant.

Now the wave of industry 4.0 sweeps over. The machinery manufacturing industry have to move into a more advanced mode of development. Whether we can put the best design in some less developed countries or regions to produce, with interconnection to integrate the global machinery manufacturing industry. Underdeveloped countries or regions have access to job opportunities to enhance the level of industrial manufacturing, while the rest of the world to enjoy a better lower cost of the product. Let us all together, to play their respective advantages, to our products bring greater development.

Do you know the classification and difference of the knife handle?

#UniversalMillingMachine  #VerticalMillingMachine

The knife handle of the different milling machines is also different. Universal milling machines generally use the knife handle cone taper of 7:24.

First, the taper 7:24 general handle holders usually have five kinds of standards and specifications:

NT (traditional) (referred to as NT or ST)

DIN 69871 (German standard) (referred to as JT, DIN, DAT or DV)

IS0 7388/1 (International Standard) (referred to as IV or IT)

MAS BT (Japanese Standard) (BT)

ANSI / ASME (American Standard) (CAT)

NT-type tool holder German standard for the DIN 2080, is a universal milling machine through the rod will pull the knife handle, the domestic also known as ST;

The other four kinds of shanks are in the processing center through the handle of the tail of the pull the knife to tighten the handle. At present, the largest domestic use is DIN 69871 type (JT) and MAS BT type two kinds of knife handle. DIN type 69871 handle can be installed in the DIN type 69871 and ANSI/ASME taper of spindle of milling machines, IS0 7388/1 handle can be installed in the DIN type 69871, IS0 7388/1 and ANSI/ASME on a machine tool spindle taper. So in general terms, the IS0 7388/1 is the best.

★ Pull nails have three key parameters: θ angle, length l and thread G.

There are several cases about the angle of the shank:

1, MAS BT (Japanese standard) knife handle pull angle θ has 45 degrees, 60 degrees and 90 degrees of points, commonly used is 45 degrees and 60 degrees;

2, DIN 69871 knife handle nails (usually referred to as DIN 69872 - 40/50) θ angle is only a kind of 75 degrees;

3, IS0 7388/1 knife handle pull nails (usually called IS0 7388/2 - 40/50) θ angle of 45 degrees and 75 degrees;

4, ANSI/ASME (American Standard) knife handle pull angle θ 45 degrees, 60 degrees and 90 degrees.

For the thread G of the tool holder, except for ANSI / ASME (American standard), there are British thread standards for the handle screw, and the other three are made of metric threads. The 40 # handle is usually used M16 thread, 50 # knife Handle nails are usually used with M24 threads.

7:24 of the knife handle are:

JT series shank (ISO, German DIN standard, China GB standard)

BT series handle (Japan MAS standard)

JT-WA series handle (Germany VDI standard)

JT-U series shank (American ANSI standard)

CAT Series Tool Holder (American ANSI Standard - Caterpillar)

ST series handle (China GB standard)

SK series handle (German DIN standard)

NT is just our popular name, there are metric, imperial division of the points.General Japan NT is divided into NT (U) and NT (m). DIN2080 is metric. China's ST standard is in accordance with DIN2080 standard, so ST that NT (m) and DIN2080 can be common.

JT standard number is: GB10944. It is made with reference to DIN69871 / 1, and ISO7388 / 2 is common. DIN69871 general German abbreviation: SK. Three standard parameters are generic. So some people called JT, ISO, DIN, SK. As for DV, DAT those names, it is some companies take the name, not standardized.

Only by clearly understanding these specifications and standards, we can for the milling machine or universal milling machine to choose the right knife handle.

References:

https://en.wikipedia.org/wiki/Milling_(machining)

https://en.wikipedia.org/wiki/CNC_router

http://advancedmanufacturing.org/category/topics/machine-tools/