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High-speed cutting is a rapidly developing high-tech in the manufacturing industry in the world today。In modern industrially developed countries，High speed cutting is a new machining concept，Recognized by more and more mechanical engineers。And high cutting efficiency and high cutting precision brought by high-speed cutting，It is also to continuously meet the needs of the continuous development of the manufacturing industry。The parts production efficiency pursued by the automotive industry and the cutting of hard materials for precision molds pursued by the mold manufacturing industry，All of them promote the rapid development of high-speed cutting technology。 one、Typical application of high speed milling machine in manufacturing industry Use a small cutting amount、The high cutting speed replaces the traditional large cutting amount、
shengchuandong Rope drive rope drive A mechanical transmission that transmits power and motion by the friction between a rope wrapped tightly around a grooved wheel。The rope used for transmission is cotton rope、Hemp rope、Polyester rope and wire rope, etc。The first three winding methods on the driving wheel and driven wheel are multi-rope winding and single-rope continuous winding，Multi-rope winding is similar to the triangular belt drive as many parallel，Single rope continuous winding A long rope is wound several times over two grooved wheels，And pulled by tension pulley（See picture[Rope drive diagram]）。Wire ropes are generally transmitted by only one wire
Machining workpiece cylindrical shape、A grinding machine with conical or other shape lines extending into the outer surface and end face of the shaft shoulder。The workpiece is supported between the two centers of the head frame and the tail seat，The circular feed movement is driven by the dial of the head frame。The head frame and tail seat are installed on the work table，It can be used for longitudinal reciprocating feed movement（Sighting machine）。The workbench is divided into two layers，The upper table can be adjusted at a small Angle，To grind conical surfaces。Wheel holder with high speed rotating wheel，The lateral feed movement is performed。Large cylindrical grinding machine to reduce the length of the machine，The general workbench is fixed and does not move，The grinding wheel frame is used for longitudinal reciprocating movement and transverse feed movement。External cylindrical grinding machine
The process and process flow of cold-rolled strip steel production are closely related to the product，The process also varies with the requirements of the product。 Cold-rolled strip steel products are made of hot-rolled strip steel，Because it has a surface of iron oxide，So remove the oxide before cold rolling，Therefore, pickling is the first process of cold rolling production。It can be rolled after pickling，Rolled to a certain thickness，Due to the work hardening of the strip，Intermediate annealing is required，Soften the strip。Before annealing, there is lubricating oil on the strip surface，The grease must be cleaned，Otherwise, oil spots will be formed on the strip surface during annealing，Cause surface defects。Strip steel that has been degreased，There is protection in the generation
21：There are several kinds of rivets commonly used？ a：It has a semicircular head，Countersunk head，Half countersunk head，Crew cut，Flat conical head，oblateness，flat。 22：What are the types of riveting？ a：Strong riveting tight riveting tight riveting。 23：What is assembly？ a：The weighting of each part according to certain technical conditions。 24：What are the three elements of assembly？ a：orientation，Prop up，clamp。 25：How to connect the metal structure？ a：welded，riveting，Bolted connection，Rivet-welded hybrid connection。 26：anti-sample
CODE：00142 Device name：Deep hole drilling and boring machine Type specification：Borehole depth≥5000mm Unit of measurement：Taiwan （one）Machining accuracy
1introduction 2PLCThe basic structure of the system Programmable controller hardware system byPLCHost machine、FeatureI/OUnit and external equipment,As shown in the figure1As indicated。amongPLCHost byCPU、memorizer、basicI/Omodule、I/OExtension interface、Peripheral interface and power supply components，The parts are connected by an internal system bus。 3PLCAnti-jamming measures in system design 3.1Hardware measure (1)shield:Pair transformer、Central processing unit、Programmer and other major components
Check tapered roller bearings[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。]when，Do not let the 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，To reduce
Radiator development has been accompanied by two main themes——Heat dissipation and silence。To improve heat dissipation performance，The simplest way is to increase the fan speed，The noise increases as the fan speed increases。The noise comes from two sources，On the one hand, there is the whirring sound of the fan cutting the air when it is running，On the other hand is the sound produced by the friction of the mechanical equipment of the fan，This sound is the 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，To reduce the power transmission process
For tapered bore bearings[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。]，The inner ring is always installed with interference fit。 Bearing with cylindrical hole[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 machinery in the shaft
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