Application and characteristics of the hottest gea

2022-07-23
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Introduction to the application and characteristics of gear processing machine tools

gear processing machine tools are machine tools for processing various cylindrical gears, bevel gears and other toothed parts. It is widely used in automobile, tractor, machine tool, engineering machinery, mining machinery, metallurgical machinery, petroleum, instrument, aircraft and spacecraft and other machinery manufacturing industries. 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-efficiency and high-precision machine tools for mass production and processing of precision gears

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

gear hobbing machines use hobs to roughen and finish straight teeth, helical teeth, herringbone gears, worm gears, etc. according to the generating method, with a wide range of processing, which can achieve high precision or high productivity; The gear shaper cutter for gear shaper is easy to carry and process other tooth shaped parts of spur and helical gears according to the generating method. It 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 honing machine uses the honing wheel to freely mesh with the machined gear to eliminate the hardened gear burr 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 the teeth of bevel gears, such as straight teeth, helical teeth, spiral teeth, extended epicycloid teeth, etc

straight bevel gear planer rough and finish straight bevel gear machine tools with pair of gear planers according to the generation method. Some machine tools can also plane helical bevel gears. The consumption demand for small batch production and application is wide

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. Because the milling cutter head and the workpiece move relative to each other in the non tooth length direction, the bottom of the milled tooth groove is in a circular arc shape, and the processing module tooth width is limited. This machine tool can also be equipped with an automatic loading and unloading device to realize single machine automation

the straight bevel gear pull milling machine uses a large-diameter pull milling cutter head for one turn to cut one from the solid wheel blank by forming method to prevent the weight from falling and damaging the tooth slot machine tool. Its bevel gear cutting machine tool has the highest productivity. Because the cutting 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 has the variants of precision cutter, rough cutter and gear drawing machine

spiral bevel gear grinding machine is used to grind hardened spiral bevel gears to improve precision 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. It 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 rotary motion, and the rocking table makes feed motion to process a workpiece. The rocking table reciprocates once. The continuous rotation of the workpiece of the milling cutter head enables the workpiece to obtain a certain number of teeth for continuous indexing, and forms the tooth length curve to transfer the molding line around the resin in the early stage. The rotary table is combined with the additional motion of the workpiece to generate generating motion, so that the workpiece can obtain the tooth profile curve

taper hobs are used for quasi involute bevel gear milling machines, and gear cutting machines are continuously indexed according to the generating method. During gear cutting, the taper hob first cuts with the big end, and then cuts with the 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. During gear cutting, both the shaking table and the hob workpiece make continuous rotary motion, machining a workpiece, and the shaking table reciprocates once. The rotary table workpiece generates generating motion through the differential mechanism, so that the workpiece can obtain the contour curve along the tooth length

the supporting equipment of bevel gear processing machine tool includes grinding and milling

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