By Chinese intelligence machinery the cloud replies below:
Overall for, at present machine tool industry assigns a grade a group of people of same interest, japan of the first a group of people of same interest, Germany, Switzerland, united States of the 2nd a group of people of same interest and other Europe country, the 3rd a group of people of same interest is Chinese Taiwan, Korea wait, the 4th a group of people of same interest is the country such as China.
But to our country in low end for the machine tool, cannot have differred with international level too much. The horizontal difference with international more it is to be above tall accurate machine tool. Process a type with machining center dimension precision and form precision is the level with a domestic and international contrast, home is 0.008 ～ 0.010mm roughly, and advanced level is international 0.002 ～ 0.003mm, nevertheless machine tool of domestic country numerical control also has micron class (one thousandth millimeter) be in war industry factory especially.
React according to a lot of people homebred machine tool has used a few years, precision opportunity is reduced, heart day machine tool used 10 years to do not have a thing, very stable. Actually the professional accomplishment of person of system of the cast of the design of this and machine tool, machine tool, numerical control, operation is relative.
The machine tool designs the soul that is machine tool precision, the machine tool such as heart day looks without what special, but precision is tall, durable, this and machine tool design are not divided. The tall tigidity that arrives e.g. Lv of the take an examination in the design, Gao Ke relies on a gender. High rigid talent goes with big parameter cutting, high speed can reduce handling time already, also conduce to raise precision. Breakdown causes damage of treatment spare parts, handling time lengthens, manufacturing metre is thrown into confusion, cause delay in work or business of delay one's work, the element such as mental efforts exhaustion was importing a machine tool to consider when the design.
Machine tool cast is the skeleton of a machine tool, it is to bear the key of cutting torque force and dispersive and oscillatory force, it is overall the foundation of stability. The machine tool does not have good cast, even if with slideway of best lever of main shaft silk, overall precision also maintains continuously hard.
Domestic machine tool is more comfortable to cast requirement, satisfy at it is low-cost, good to be used quite. This waits to be no good with respect to the intensity hardness that brings about him.
And entrance machine tool was used old still precision is good, cast result cannot be done not have, foreign cast purchases personnel is to cast the senior personage of the industry to perhaps had sufferred more very cast special higher education, the character that cast factory also is cast of pair of foreign machine tool controls the degree that reached high degree of professional proficiency.
Numerical control department connects the crucial precision that affects a machine tool. The numerical control system that imports at present basically has send that division, 3 water chestnut, Xi Menzi, Haidehan, Li Shile to wait, homebred have Guangzhou numerical control, China in numerical control. In looking system of ongoing mouth numerical control is being designed, use in great quantities modular structure, this kind of structure is torn open easily outfit, each control plate height are compositive, make dependability had very big rise.
The professional accomplishment of operator, this also is a main index, after all this concerns a machine tool to maintain daily, use those who maintain is good, what that can use is a few longer.
In addition, the respect such as the assembly of the use of component of machine tool function, machine tool and air plane can affect the long precision of the machine tool. So, machine tool precision is the organic composition of a system, a lot of elements are pointed to together.
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