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introduction：By changing the radial position of the standard tool to the gear blank or changing the width of the tooth groove of the standard tool, the tooth shape of the gear is made into a non-standard involute tooth shape。When cutting the teeth of the wheel，Changing the radial position of the standard tool to the gear blank is called radial displacement（figure1[Cutting of standard gears and variable gears]）;Changing the groove width of a standard tool is called tangential modification。The most common is radial displacement，Tangential displacement is generally used for the displacement of bevel gears。
2015-03-02 Reading quantity 2960
introduction：A gear drive between intersecting axes composed of a pair of bevel gears，Also known as bevel gear drive（figure1 [Bevel gear transmission diagram]）。Its motion is the same as the friction wheel drive composed of a pair of conical friction wheels with overlapping vertices and pure rolling，The friction cone is equivalent to the pitch cone of bevel gear transmission。The Angle between the bar and the axis of the pitch cone Its called the pitch cone Angle。The Angle between the transmission axes of bevel gears[33]=1+2，It can be decided as needed,Usually is90°。The transmission ratio is [0957-01]Shizhong、Z、Respectively speed、Number of teeth and diameter of large end pitch circle of gear,subscript1Finger wheel，2dactylowhead。 when[33]=90°when [0957-02]
2015-03-03 Reading quantity 2964
introduction：1introduction Bearing bush on all kinds of mechanical equipment in China、Shaft sleeve，Tin bronze has been widely used for a long time，Such as，Various types of gear pumps，Have always usedZCuSn6Pb6Zn3orZCuSn5Pb5Zn5Tin bronze casting bushing blank，The technology of machining and then lead plating is adopted，Then assemble and use，Complex production process，High cost。In this case，We have developed a new type of 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 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。]alloy(designationTZS88)，Instead of tin bronze cast bearing、Shaft bush blank，Direct assembly after machining，Simple process，reduce50The above bushing production cost。
2015-03-03 Reading quantity 2910
introduction：one、Involute of gear teeth (defun c:gear(/) ( setq p0 (getpoint"Input gear centerp0: ") m (getreal"Enter the gear moduleM: ") z (getint"Enter the number of teeth of the gearZ: ") ha 1
2015-03-04 Reading quantity 3006
introduction：chilun chuandong Gear drive gearing A mechanical transmission in which the teeth of a gear mesh to transmit power and motion between shafts。Gear drive is widely used，It is characterized by its compact structure，High efficiency，Long life，Work reliably，The transmission ratio is accurate；However, the manufacturing accuracy and installation accuracy are required，Otherwise, it will be noisy.，Gear load capacity will be reduced。 sort Gear drives can be classified according to the relative position of their axes，See the diagram for details1 [Gear drive]Sum table[Gear drives are classified by axis relative position]。 Gear transmission according to the shape of the gear can be divided into cylindrical gear transmission、Bevel gear drive、Non-circular gear drive、Rack drive and worm drive。According to the tooth profile curve of the gear teeth can be divided into involute gear drive、Cycloidal gear drive and arc gear drive, etc。A transmission consisting of more than two gears is called a gear train。Gear transmission can be
2015-03-04 Reading quantity 2913
introduction：【keyword】：Powder metallurgy;Double-sided gear;Mold frame modification;Bright quenching 【Abstract】：multi-step、Complex shape、The powder metallurgy double-sided gear with bright surface was originally produced by foreign manufacturers。The author adoptedＦｅＣｕＣMaterials,With the help of reforming the die frame and die structure of the press,And the parts are developed by bright quenching treatment,Its hardness can reach or exceedＨＲＣ30。 1 introduction The powder metallurgy method can form a product in an almost final shape。however,For more steps,A part with a more complex shape,It is usually necessary to complete the forming process of the product through a multi-functional press and die holder。How to carry on the technical transformation of the existing ordinary press and die frame,Enables it to press special-shaped multi-step parts,So as to improve the level of the original equipment,It can also save investment and reduce product costs,This is a problem that many manufacturers hope to solve。meanwhile,Users are now
2015-03-16 Reading quantity 2910
introduction：Toothed mechanical parts that can mesh with each other。It is widely used in mechanical transmission and the whole mechanical field。Modern gear technology has arrived﹕Gear modulem=0.004～100millimeter﹔Gear diameter by1millimeter～150About one meter﹔The transmission power can be reached100000kilowatt﹔Speed up to100000turn/points﹔Maximum circumferential velocity up to300meter/seconds。 Brief history Gears have long been used in transmission。B.c.300Many years﹐The Greek philosopher Aristotle《Mechanical problem》The problem of using bronze or cast iron gears to transmit rotating motion is described in the paper。A complete set of wheels has been used in the south-pointing cart invented in ancient China。merely﹐Gears in ancient times were made of wood or cast of metal﹐Only rotational motion between axes can be transmitted﹐The smoothness of the transmission cannot be guaranteed﹐The load capacity of the gear is also very small。With the development of production﹐The smoothness of gear operation is valued。1674Danish astronom
2015-03-21 Reading quantity 2938
introduction：Electromagnetic clutch and you take a look at what is planetary gear。 Planetary gear is a kind of gear structure，Usually one or more external gears revolve around a central gear，Its like the planets going around the sun，Hence the name。besides，Planetary gears usually have an outer ring on the outermost part，Used to fit the orbit of the planetary gears。Planetary gears can usually be divided into simple planetary gears and complex planetary gears。Simple planetary gears each have a sun gear，An outer ring of teeth，One planetary gear and one planetary rack。Complex planetary gear usually refers to the gear train that includes both planetary and solar gear trains。Complex planetary gears have higher reduction ratio than simple planetary gears，High torque features。 Normally the axes are parallel to each other，But there is also one
2015-03-22 Reading quantity 2999
introduction：【keyword】：Powder metallurgy;Double-sided gear;Mold frame modification;Bright quenching 【Abstract】：multi-step、Complex shape、The powder metallurgy double-sided gear with bright surface was originally produced by foreign manufacturers。The author adoptedＦｅＣｕＣMaterials,With the help of reforming the die frame and die structure of the press,And the parts are developed by bright quenching treatment,Its hardness can reach or exceedＨＲＣ30。 1 introduction The powder metallurgy method can form a product in an almost final shape。however,For more steps,A part with a more complex shape,It is usually necessary to complete the forming process of the product through a multi-functional press and die holder。How to carry on the technical transformation of the existing ordinary press and die frame,Enables it to press special-shaped multi-step parts,So as to improve the level of the original equipment,It can also save investment and reduce product costs,This is a problem that many manufacturers hope to solve。meanwhile,Users are now
2015-03-24 Reading quantity 2806
introduction：one、Forged steel The strength of steel is high，Impact resistance，The mechanical properties can be significantly improved by heat treatment，So it is the main material for making gears。Because the fiber direction of the forged blank is conducive to improving the bending strength of the gear teeth，Therefore, most gears are forged blanks，Rolled steel is used directly only for gears with small and insignificant forces。According to the treatment method of tooth blank and cutting technology，The steel used for manufacturing gears and the heat treatment methods are divided into two categories： First kind：Tooth surface hardnessHB≤350，Medium carbon steel45Gauge steel、50No. Steel or medium carbon alloy steel40Gr、40MnB、35SiMnEqui-line tempering or normalizing treatment，Final cutting can be performed after heat treatment。After tempering，Low hardness(HB=220~250)，Comprehensive properties of materials(Mechanical strength and impact toughness)Relatively good，Suitable for low speed、Operate under medium speed and medium steady l
2015-03-24 Reading quantity 3062
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