High-modulus gear-profile generating processing method
A processing method and large modulus technology, applied in gear tooth manufacturing tools, gear tooth manufacturing devices, gear teeth, etc., can solve the problems of high tool manufacturing cost, low processing accuracy, high machine tool cost, etc., to save purchase or transformation costs , low tool cost and high cutting efficiency
Inactive Publication Date: 2009-05-20
WUHAN MARINE MACHINERY PLANT
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Problems solved by technology
[0003] 1. At present, the capabilities of domestic gear-specific processing machine tools (gear hobbing machines and gear grinding machines) cannot meet the processing requirements, and the cost of transforming machine tools is very high
[0004] 2. The manufacture of non-standard gear cutters with large modulus or extra large modulus is difficult and costly, and the processing of hardened tooth surfaces cannot be solved
[0005] 3. Forming tool processing is used, the tool manufacturing cost is high, the machining accuracy is low, and the processing of the hardened tooth surface cannot be solved
[0006] 4. The ball-knife forming method is used on the CNC machine tool, which is not only inefficient but also difficult to polish the knife marks, and the quality cannot be effectively guaranteed
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Embodiment 1
[0034] A non-standard pinion of a driving mechanism, modulus m=62.33, number of teeth z=16, tooth width b=600mm, pressure angle a=20°, displacement coefficient x=0.5, tooth surface carburizing and quenching HRC≥60, The thickness of the hardened layer is 6 mm, and the manufacturing precision requirements are DIN3961, DIN3967 level 9. Since the modulus of the gear has exceeded the national standard sequence, there is no standard processing tool on the market, and it is beyond the capacity of the existing gear processing machine tools. Therefore adopt the inventive method to carry out tooth surface finishing to it, and its specific scheme is as follows: adopt the Φ 400 millimeter face milling cutter of inserting CBN (cubic boron nitride) blade, it is installed on the main shaft of common four-axis linkage numerical control machine tool, like this The cutting surface of the face milling cutter can be regarded as a meshing side of the rack, and the movement of the face milling cutte...
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Abstract
A generating method of large modulus gears and profiles is disclosed. It emulates the meshing movement of the gear and rack on a general NC machine tool by NC synthesizing. Face milling cutter generation is adapted to process large modulus gears and profiles. Face milling cutter mounted with CBN blades can complete milling process of hard tooth surface, which can replaces grinding by milling. For large modulus nonstandard gears (modulus >50), small batch or single large modulus and supper-large modulus gears, the method has obvious low cost and technical advantages and notable social and economic benefits.
Description
Technical field [0001] The invention relates to a gear processing method. Specifically, it is a fan-forming machining method for large-modulus gear tooth profiles that use face milling cutters for gear machining. Background technique [0002] At present, the commonly used methods of gear processing are mainly the following: 1. Use special gear cutters to process them on special machine tools for gear processing; 2. Gears with low precision requirements are processed by forming tool forming methods; 3. After quenching, the tooth surface Processing is ground on a gear grinding machine. However, for large-modulus hard-toothed gears, such as non-standard gears with a modulus of more than 50, if the above method is used to process, the following problems exist: [0003] 1. At present, the capacity of domestic special gear processing machine tools (gear hobbing machines and gear grinding machines) cannot meet the processing requirements, and the cost of transforming machine tool...
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IPC IPC(8): B23F5/20B23F21/12
Inventor 董洪林王益知吴红琼汤敏
Owner WUHAN MARINE MACHINERY PLANT