What Is Gear
Gear refers to a mechanical element with gears on the rim that continuously meshes to transmit movement and power. The application of gears in transmission appeared very early. At the end of the 19th century, the principle of the generative gear cutting method and the special machine tools and tools that used this principle to cut gear appeared one after another. With the development of production, the smoothness of gear operation has been paid attention to. Generally, there are gear teeth, tooth grooves, end faces, normal faces, addendum circles, tooth root circles, base circles, and index circles.
- Gear teeth: 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 gear teeth on the mating gear contact each other, which can make the gear continue to mesh and run.
- Cogging: is the space between two adjacent gear teeth on the gear; the end face is on the cylindrical gear or cylindrical worm, and the plane perpendicular to the axis of the gear or worm.
- End face: is the plane at both ends of the gear.
- Normal surface: refers to the plane perpendicular to the tooth line of the gear tooth.
- Addendum circle: refers to the circle where the tip of the tooth is located.
- Tooth root circle: refers to the circle where the groove bottom is located.
- Base circle: a circle that forms the involute generating line as a pure rolling circle.
- Index circle: is the reference circle for calculating the geometric dimensions of the gear in the end face
Minghe Hardware is known as a CNC services supplier, we also provide excellent forging and gear machining with outstanding properties and performance. We manufacturing gear in stainless steel and other materials such as aluminum, carbon steel, brass, and bronze, whether investment casting hollow parts or solid parts, we can deliver intricate shapes that perfectly match your designs, smooth surface finish is achievable through different metal finishing methods and CNC techniques. High durability makes our gear ideal for high wear applications. If you are seeking the most affordable solutions for your gear project, volume production of minghe hardware can reduce your cost greatly.
The Classification Of Gear
Gears can be classified according to tooth shape, gear shape, tooth line shape, surface on which the gear teeth are located, and manufacturing method. The tooth profile of the gear includes tooth profile curve, pressure angle, tooth height and displacement. Involute gears are easier to manufacture, so in modern gears, involute gears account for the absolute majority, while cycloid gears and arc gears are less used. In terms of pressure angle, gears with small pressure angles have a lower load-carrying capacity; gears with large pressure angles have higher load-bearing capacity, but the load on the bearing increases when the transmission torque is the same, so it is only used in special cases. The tooth height of gears has been standardized, and standard tooth heights are generally adopted. There are many advantages of displacement gears, which have been used in all kinds of mechanical equipment. In addition, gears can also be divided into cylindrical gears, bevel gears, non-circular gears, racks, and worm gears according to their shape; according to the shape of the tooth line, they can be divided into spur gears, helical gears, herringbone gears, and curved gears; The surface is divided into external gears and internal gears; according to the manufacturing method, it can be divided into cast gears, cut gears, rolled gears, and sintered gears. The manufacturing material and heat treatment process of the gear have a great influence on the load-bearing capacity and size and weight of the gear. Before the 1950s, carbon steel was mostly used for gears, alloy steel was used in the 1960s, and case hardened steel was used in the 1970s. According to the hardness, the tooth surface can be divided into two types: soft tooth surface and hard tooth surface. Gears with soft tooth surfaces have low load-bearing capacity, but they are easier to manufacture and have good running-in performance. They are mostly used in general machinery with no strict restrictions on transmission size and weight and small-volume production. Because the small wheel has a heavier burden among the matched gears, in order to make the working life of the large and small gears roughly equal, the hardness of the tooth surface of the small wheel is generally higher than that of the large wheel. Hardened gears have a high load-bearing capacity. After the gears are cut, they are quenched, surface quenched or carburized and quenched to increase the hardness. But in the heat treatment, the gear will inevitably be deformed, so after the heat treatment, grinding, grinding or fine cutting must be carried out to eliminate the error caused by the deformation and improve the accuracy of the gear.
Six-level precision gear Material: 40Cr, 42CrMo, 45# etc. Product surface treatment: blackening, chrome plating, nickel plating, zinc plating, etc. Inspection equipment: projector, roughness meter, thread pitch runout measuring instrument, caliper, micrometer, lever micrometer, micro thread caliper, gauge, Rockwell hardness tester, Webster hardness tester, diameter gauge, gear detection center, roundness Inspection instrument, deflection instrument, stop gauge, high gauge, thread gauge, etc. Processing equipment: CNC machining center, CNC lathe, CNC milling machine, internal and external cylindrical grinder, centerless grinder, CNC grinder, automatic lathe, grinder, punching machine, welding machine, drilling machine, tapping machine, wire cutting, thread rolling machine, CNC gear hobbing machine, Surface superfinishing machine, etc.
- CNC lathe processing: Φ5mm-Φ60mm*700mm
- CNC milling machine processing: 800mm*1500mm*700mm
3. Technical parameters
|Material||Alloy steel, carbon steel, stainless steel, stainless iron|
|Surface Treatment||Oxidation, blackening, electroplating, polishing, black matt treatment, sandblasting|
|Testing Equipment||Projector, roughness meter, thread pitch runout measuring instrument, caliper, micrometer, lever micrometer, micro thread caliper, gauge, Rockwell hardness tester, Webster hardness tester, diameter gauge, gear testing center, roundness tester, Deflection instrument, stop gauge, high gauge, thread gauge, etc.|
|Processing Equipment||CNC machining center, CNC lathe, CNC milling machine, internal and external cylindrical grinder, centerless grinder, CNC grinder, automatic lathe, grinder, punching machine, welding machine, drilling machine, tapping machine, wire cutting, thread rolling machine, CNC gear hobbing machine, super-precision surface Machine etc.|
|Drawing Format||PDF, dwg, CAD，JPG, Solidworks|
|Production Capacity||100,000 pcs/month|
|Size Range||OD：Φ4mm-Φ50mm, Length≤700mm|
|Application Field||Fitness equipment, automobiles, air conditioners, household appliances, office appliances, medical equipment, etc.|
|Package||Plastic bag + carton + (pallet), plastic bag + wooden box, according to customer requirements|
|Delivery Time||Sample: 10-15 days; Batch: According to the order quantity|
5. Manufacturer advantages
- Precision processing with drawings and samples;
- Production-oriented enterprise, more than 20 years of experience in precision shaft processing, strong technical support, advanced processing equipment, complete inspection equipment and a strong logistics inspection team;
- 100% factory inspection, quality assurance;
- Strong productivity and short processing cycle.
6. Common Material Processing
|Other commonly used alloy steels||35CrMo，20Cr，40Cr，40CrMo，42CrMo，20CrMnTi，20CrMMnMo,etc.,|
7. Surface Treatment
|stainless steel||Other steel materials|
8. Strict inspection standards
- Strong QC team;
- Incoming inspection of raw materials;
- First inspection, patrol inspection, random inspection;
- 100% factory inspection.
Minghe Gear And Gear Shaft Case Studies List
Manufacturer of standard and custom spline, precision and worm shafts. Made from steel, stainless steel, aluminum, bronze, cast iron, plastic, fiber and nylon. Spline shafts are available in 56 in. length. Involute, straight and British standard metric gear tooth forms available. Various capabilities include boring, drilling, milling, knurling, reaming, gear cutting, thread grinding, turning, threading and tapping. Additional services such as heat treating, plating, passivation, anodizing, CMM inspection and testing provided. Low to medium volume production runs offered. Serves the aircraft, automobile, automotive, government, marine, military, mining, nuclear, semiconductor and transportation industries. Made in the China.