Each machine requires different parts, but gears are used in many machines. The structure of the gear. Gear teeth are abbreviated as teeth, which are each convex part of the gear used for meshing. These convex parts are generally arranged in a radial pattern. The teeth on the mating gears are in contact with each other, so that the gears can continuously mesh and run. Cogging is the space between two adjacent teeth on the gear; The normal plane refers to the plane perpendicular to the tooth line of the gear tooth; Addendum circle refers to the circle where the top of the tooth is located; The tooth root circle refers to the circle where the groove bottom is located; The base circle is a circle that forms the involute line for pure rolling; The index circle is the reference circle for calculating the geometric dimensions of the gear in the end face; The end face is on a cylindrical gear or cylindrical worm, and is perpendicular to the axis of the gear or worm. Gear teeth, normal...
Rolling and gear shaping. The equipment used for processing the tooth part still uses a large number of ordinary gear hobbing machines and gear shaping machines. Although it is convenient to adjust and maintain, the production efficiency is low. If a large production capacity is completed, multiple machines must be produced at the same time. With the development of coating technology, the re-coating after the hob and insert knife are sharpened is very convenient. The coated gear can significantly increase the service life and reduce the number of replacements. 2. Shaving. Radial gear shaving technology is widely used in large-volume steam gear processing because of its high efficiency, design tooth shape and tooth shape modification requirements, which are easy to achieve. Using this technology for gear machining can ensure stable and reliable quality. 3. Heat treatment. Gear machining requires carburizing and quenching to ensure its good mechanical properties. For gears that are no longer grinded after heat, stable and reliable heat treatment equipment is indispensable. 4. Grinding processing. The main purpose is to finish the heat treatment of the gear...
According to specifications or size, gear models are divided into standard and non-standard;According to different measurement units at home and abroad, gear models are divided into metric and imperial systems.Metric gear modelThe main models of metric gears are: M0.4 M0.5, etc. Inch gear model.DP gear is an inch gear (diameter pitch gear) used in Europe, America and other countries. It refers to the number of teeth on each inch of the circle diameter. The larger the value, the smaller the teeth. Diameter joint DP=z/D (z—the number of teeth, D—the diameter of the index circle, in inches), with the diameter joint DP unit (1/in). Its conversion relationship with the metric system is m=25.4/DP, which means that it is the same as our commonly used modulus. The main models of inch gears are: DP1 DP1.25, etc.China's iron and steel smelting technology level is also continuously improving. The use of advanced smelting technologies such as ladle secondary smelting, fine-tuning of ingredients and continuous casting and rolling enables steel mills to produce gear steel for gears with high purity and hardenability with narrowing....
The gear damage of the gear reducer is a problem that occurred during the operation. Next, we will analyze this problem. Broken teeth problem. The reasons for broken teeth can be divided into two situations, one is fatigue breakage, and the other is overload breakage. In the normal operation of the gear, the gear will be subjected to alternating loads for many times, and bending fatigue stress will be generated on the dangerous surface of the gear, so long-term wear will produce fatigue cracks at the root of the gear. Under the action of continuous bending fatigue stress of the gear, the fatigue cracks of the gear will gradually deepen, and the gear will break due to sports fatigue under the long-term induction of this effect. During the operation of the gear, it will be subjected to an overload shock and a change in the load force in a short time. In this way, the wear of the gear will gradually become thinner, and then it will break during work. In view of the above problem of broken teeth, without...
Generally, there are gear teeth, tooth grooves, end faces, normal faces, tooth crest circles, tooth root circles, base circles and index circles. Gear teeth: Referred to as teeth, it is each convex part on the gear for meshing. These convex parts are generally arranged in a radial pattern. The gear teeth on the mating gears are in contact with each other to make the gears continue to mesh. Teeth: It is the space between two adjacent gear teeth on the gear; the end face is the plane on the cylindrical gear or cylindrical worm perpendicular to the axis of the gear or worm. End face: It is the plane at both ends of the gear. Normal: refers to the plane perpendicular to the tooth line of the gear. Tooth top circle: refers to the circle where the top of the tooth is located. Root circle: refers to the circle where the groove bottom is located. Base circle: a circle that forms an involute occurrence line for pure rolling. Indexing circle: It is the reference circle for calculating the geometric dimensions...
1. Gear processing: The key to gear processing is tooth surface processing. Methods include tool cutting and grinding wheel grinding. It is the process of obtaining the specific structure and precision of gears by mechanical methods. According to the processing principle, it can be divided into two categories: the forming method and the forming method. gear processing product types: Cylindrical gear: It can be divided into straight teeth and helical teeth according to the tooth shape, external gears and internal gears according to the position of the gear teeth, and disc teeth and shaft teeth according to the structure of the parts. Cylindrical gears are used for the transmission of power and motion of parallel shafts, such as gearbox speed change, engine ignition timing, etc. 2. Ring gear: For example, the synchronizer gear ring used for variable speed synchronization control belongs to the outer gear ring, and the ring gear used for planetary transmission and the sliding gear sleeve used for variable speed connection belong to the inner gear ring. 3. Bevel gear: According to the tooth shape, it can...
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