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1、introduction Traditional remote monitoring only has the function of data collection，When real-time control and data processing are required，Youll look powerless。PLCAs a core component of industrial control，Its on the network、The ability to communicate and so on is getting stronger，Data acquisition with remote monitoring requirements、Real-time control and data processing functions。With domestic productionPLCThe increase in market share，PLCThe price is also more advantageous than before，UsePLCdoDASSystem or usePLCPlatform development of data acquisition system will be the trend or quite attractive choice。DevisonsV80MinorPLCOn heat
In the era of more and more widely used Internet，People are also communicating more and more frequently on the Internet。Designers can exchange design experience by transferring design documents through the Internet，Improve the design level；The company can also pass the design document directly to the manufacturing company，So that they can complete the production of product parts in the shortest time。And in the process of file transfer，People have to face such problems：How to ensure that the document is correct，Compress the file size as much as possible，To send and receive quickly。We are usingSolidWorks In the process of discovery，in
one、Lubrication characteristics of compressor 1、summarize A gas compressor is a power device that converts mechanical energy into gas pressure energy，Often used in pneumatic tools to provide gas power，In petrochemical、Drilling and production、Pressure oxygen is also commonly used in metallurgy and other industries、hydrogen、ammonia、Natural gas、Coke oven gas、Inert gas and other media。 Compressors can be divided into low pressure compressors according to different exhaust pressure—Exhaust pressure less than1.0MPa；Medium pressure compressor—Exhaust pressure1.0-10MPa；High pressure compressor—Exhaust pressure10-100MPa；Ultra-high pressure compression
At present，The level of cutting processing and tool technology in China is relatively backward with that of industrial developed countries20years，Close the gap，The efforts of the tool industry alone are not enough，There must also be user industries to increase investment in tools，Make full use of the tool in the lift rate、Reduce cost、Shorten the delivery time、Accelerate the role of new product development。Foreign data show that，The tool accounted for the manufacturing cost is2.5%～4%，But it has a direct impact on manufacturing costs20%The machine tool cost and38%Labor cost，therefore，Feed speed and cutting speed each increase15%～20%Can reduce manufacturing costs10%～15%。As stated
First section rolling bearing[bearing:bearing（“Bearing”，Japanese person“Axial receptor”）It is a part that holds and reduces the friction coefficient of load during mechanical transmission。Can also be said，When other parts move relative to each other on the shaft，A device used to reduce the coefficient of friction during power transmission and to keep the center of the shaft fixed。]Basic structure of By plain bearing[bearing:bearing（“Bearing”，Japanese person“Axial receptor”）It is a part that holds and reduces the friction coefficient of load during mechanical transmission。Can also be said，When other parts are opposite each other on the shaft
Recently learned from the China General Machinery Industry Association reducer branch，With the further increase of national infrastructure construction，In recent years, Chinas reducer industry has developed rapidly。Expert prediction，“The 12th Five-Year Plan”period，Due to the development of the countrys overall economy，The growth rate of the total economic volume of the reducer industry will still reach double digits。 The development of reducer in our country has been recent50History of the year，It is widely used in various fields of national economy and national defense industry。The product has been from the initial single cycloidal reducer，Developed to now five categories of products，Cycloidal reducer、Continuously variable transmission、Gear reducer、Worm gear reducer、electricity
1、ⅠAssembly and adjustment of shaft shaftⅠIts driven directly by the belt wheel，It is equipped to achieve positive rotation，Reverse the motion of the two sets of gears。Pull the pull rod by manipulating the handle，Drive spline sleeve to press respectively，The opposite sides of the friction plate to achieve positive，reversal。Principal axisⅠAlso clutch。Axle mountedⅠThe eccentric sleeve drives the plunger pump through the crank to lubricate the key parts of the box。shaftⅠThe structure is shown in the figure 1-1。 Because axisⅠThere are many parts on it，Assembly is also cumbersome，So the axisⅠAfter assembly，Then the main axle box is assembled in the main assembly。 （1）、Preparatory work
Rock drilling trolley is also called“Drilling trolley”，Its a rock drilling device，Mainly used for tunnel construction。Our company1993Introduced the firstNH178Rock drilling rig，The car has hydraulic control、Gas path control、Circuit control、Waterway control、The system is complex and so on，It plays a key role in tunnel operations。This paper combines work practice，itNH178The failure causes of hydraulic system of drilling truck are analyzed。NH178The hydraulic system of the car is faulty，According to the cause of failure can be divided into：Early failure，Serviceability faults and faults caused by improper selection of oil materials；According to the fault phenomenon can be divided into：System runaway
Sometimes it may be because of busy work，Engraving machine maintenance is not timely，The spindle motor rusts easily，Slight rust does not affect the normal use of the spindle motor，But if left untreated for a long time，It will shorten the life of the spindle motor。
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