Introduction to the characteristics of the hottest

2022-08-22
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Gear processing machine tools are widely used in automobile, tractor, machine tool, engineering machinery, mining machinery, metallurgical machinery, petroleum, instrumentation, aircraft and spacecraft and other machinery manufacturing industries

gear processing machine tools process various cylindrical gears, bevel gears and other toothed parts. There are many kinds and specifications of gear processing machine tools, including small machine tools for processing gears with a diameter of several millimeters, large machine tools for processing gears with a diameter of more than ten meters, and high-precision machine tools for processing precision gears with high-efficiency machine tools for mass production

ancient gears were formed by hand filing. In 1540, when making clocks and watches in toriano, Italy, a gear cutting device using a rotary file was made; In 1783, Rene, France, made a machine tool for machining gears with milling cutters and accessories for cutting rack and internal gears; Around 1820, white made the first machine tool that could process both cylindrical gears and bevel gears. Machine tools with this performance developed again in the second half of the 19th century

in 1835, Whitworth, England, obtained the worm gear hobbing machine patent to make the experimental machine reach the qualified use state; In 1858, Schiller obtained the patent of cylindrical gear hobbing machine; After many improvements, it was made into belt 6 by pford in Germany in 1897 Is the safety protection device of the universal tensile strength tester for steel wire rope faulty? The differential gear hobbing machine has successfully solved the problem of processing helical gears. After being made into a gear shaped gear shaper cutter, philos of the United States made a gear shaper in 1897

At the beginning of the 20th century, due to the needs of the automotive industry, various gear grinding machines came out one after another. The shaving machine was made in the United States around 1930; It was made into a gear honing machine in 1956. After the 1960s, modern technology was applied to some advanced cylindrical gear machining machines, such as large machine tools using digital display to indicate the amount of movement and the depth of gear cutting; The gear hobbing machine, gear shaper and gear grinding machine adopt the electronic servo system with a total of about 2.7% control system to replace the mechanical transmission chain to exchange gears; A programmable controller with fault diagnosis function is used to control the working cycle and change cutting parameters; The digital control non-circular gear shaping machine is developed to adapt to the control of hobbing machine; On the gear hobbing machine, the electronic sensor is used to detect the motion error of the transmission chain and automatically feed back and compensate the error

in 1884, Bill gram of the United States invented a gear planer for machining straight bevel gears with a single planer according to the generating method; In 1900, bill of the United States designed a double cutter head milling straight bevel gear machine tool

due to the needs of the automotive industry, the United States manufactured a straight bevel gear planer with two planers in 1905 and a spiral bevel gear milling machine in 1913; 1 "J RN Grossmann, a new technology expert of semicon, said that in 923, the quasi involute bevel gear milling machine appeared; In the 1930s, a gear broaching machine capable of broaching straight bevel gears in one time was developed, which is mainly used for the manufacture of automotive differential gears

In the 1940s, in order to meet the needs of aviation industry, spiral bevel gear grinding machine was developed. In 1944, the Swiss erikon company made the extended epicycloid bevel gear milling machine; Since the 1950s, a double cutter body combined end milling cutter head has been developed to process extended epicycloid bevel gear milling machines

gear processing machine tools are mainly divided into cylindrical gear processing machine tools and bevel gear processing machine tools. Cylindrical gear processing machine tools are mainly used to process various cylindrical gears, racks and worm gears. Commonly used are gear hobbing machine, gear shaping machine, gear milling machine, gear shaving machine, etc

gear hobbing machine uses hobs to rough and finish straight teeth, helical teeth, herringbone gears and worm gears according to the generation method, with a wide range of processing, which can achieve high precision or high productivity; Gear shaping machine uses gear shaping cutter to process spur and helical gears and other tooth shaped parts according to the generating method, which is mainly used to process internal gears of multiple gears; The gear milling machine uses the forming milling cutter to process according to the indexing method, which is mainly used to process instrument gears with special tooth shape; Gear shaving machine is a high-efficiency machine tool for gear shaving cutter to finish machining gears; Grinding wheel for gear grinding machine, high-precision machine tool for finishing hardened cylindrical gear or gear cutter tooth surface; The gear honing machine uses the honing wheel to mesh freely with the machined gear to eliminate the burrs of hardened gears and other tooth surface defects; The gear extruding machine uses the high hardness non cutting edge extruding wheel to freely mesh with the workpiece to grind the micro unevenness on the tooth surface, so as to improve the precision and smoothness of the machine tool; Gear chamfering machine is an indispensable processing equipment for the internal and external meshing sliding gear end rounding machine, the production of gear boxes and other gear shifting mechanisms. Cylindrical gear processing machine tools also include gear hot rolling mill, gear cold rolling mill, etc

bevel gear processing machine tools are mainly used to process straight teeth, helical teeth, spiral teeth, extended epicycloid teeth and other bevel gear teeth

straight bevel gear planer rough and finish straight bevel gear machine tools with paired planer cutters according to the generation method. Some machine tools can also plane helical bevel gears. Small batch production is the most widely used

the double cutter head straight bevel gear milling machine uses two cutter teeth staggered milling cutter heads to mill the left and right tooth surfaces of the same tooth groove according to the generation method, which has high production efficiency and is suitable for batch production. Due to the relative movement between the milling cutter head and the workpiece in the non tooth length direction, the bottom of the milled tooth groove is in a circular arc, and the processing module tooth width is limited. This machine tool can also be equipped with automatic loading and unloading devices to realize single machine automation

a large-diameter pull milling cutter head of the straight bevel gear pull milling machine rotates, and a cogging machine tool is cut out from the solid wheel blank by forming method. Its bevel gear cutting machine tool has the highest productivity. Because the tool is complex and expensive, and each kind of workpiece requires a special cutter head, it is only suitable for mass production. Machine tools are generally equipped with automatic loading and unloading devices

the spiral bevel gear milling machine uses the spiral bevel gear milling cutter head to rough and finish the spiral bevel gear hypoid gear machine according to the generation method, and there are variants of precision cutting machine, rough cutting machine, gear drawing machine, etc

spiral bevel gear grinding machine is used to grind hardened spiral bevel gears to improve the accuracy and smoothness. Its structure is similar to that of spiral bevel gear milling machine, but it uses grinding wheel instead of milling cutter head, and is equipped with grinding wheel dresser, which can also grind hypoid gears

extended epicycloid bevel gear milling machine uses extended epicycloid bevel gear milling cutter head or double cutter body combined end face milling cutter head to continuously index the gear cutting machine tool according to the generation method. During gear cutting, the workpiece of the milling cutter head of the rocking table makes continuous rotation movement, and the rocking table makes feed movement to process a workpiece. The rocking table reciprocates once. The continuous rotation of the workpiece of the milling cutter disc enables the workpiece to obtain a certain number of teeth for continuous indexing, and forms a tooth length curve. The rocking table rotates and combines with the additional motion of the workpiece to produce the generating motion, so that the workpiece can obtain the tooth shape curve

taper hob for quasi involute bevel gear milling machine, continuous indexing gear cutting machine tool according to the generation method. When cutting teeth, the taper hob first cuts with the big end, and then cuts with its smaller diameter end. In order to ensure the consistent cutting speed in the whole cutting process, the machine tool controls the speed of the hob by the stepless speed change device. When cutting teeth, the shaking table and the hob workpiece all make continuous rotation movement, processing a workpiece, and the shaking table reciprocates once. The rotation of the work piece of the shaking table generates generating motion through the differential mechanism, so that the work piece can obtain an equal height tooth profile curve along the tooth length

the supporting equipment of bevel gear processing machine tools includes grinding and milling cutter head, broach head blade grinder, paired bevel gear lapping machine, bevel gear rolling inspection machine to prevent tooth heat treatment deformation, quenching press, etc

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