Preparation method of deep-groove coupling teeth for automatic transmission of hybrid electric vehicles
A technology for hybrid vehicles and automatic transmissions, which is applied to wheels, vehicle parts, metal processing equipment, etc., can solve problems such as long working hours, reduce production costs, and long processing cycles, achieve smooth and unobstructed motion, improve tooth profile accuracy, The effect of improving the production accuracy
Active Publication Date: 2019-01-22
CHONGQING CHUANGJING WARM FORGING FORMING
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Problems solved by technology
[0004] The present invention aims at the disadvantages of low gear precision, long processing cycle, many man-hours and increased cost in the preparation method of the deep groove type coupling teeth of the automatic transmission of hybrid electric vehicles in the prior art, and provides a deep groove automatic transmission for hybrid electric vehicles. Groove-type combined tooth preparation method makes it have high tooth shape precision, high product shape and position tolerance precision, high production efficiency and low production cost
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[0036] The method for preparing the deep-groove coupling teeth of the hybrid electric vehicle automatic transmission of the present invention is characterized in that it comprises the following steps:
[0037] 1) According to the process requirements, prepare the raw materials; after the raw materials pass the inspection, the blanks are obtained by blanking, and the weight of the blanks is controlled according to the process requirements;
[0038] If there is scale, remove the scale on the surface of the raw material; specifically, use a special peeling lathe to remove the scale; or use shot blasting to remove the scale on the surface of the raw material;
[0039] Apply lubricant to the billet for lubrication as needed;
[0040] 2) Use heating equipment to heat the raw materials to the temperature required by the process, such as the range of 900°C-1080°C; specifically use 800KW intermediate frequency furnace equipment; the specific optional temperatures are 900°C, 920°C, 950°...
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The invention discloses a preparation method for a hybrid car automatic transmission deep groove type combined gear. The preparation method comprises the steps that (1) raw materials are prepared according to the process requirement; (2) the raw materials are heated to the temperature required by the process; (3) forging and stamping are conducted after heating, and a blank material is formed; (4) heat treatment is conducted on the blank material; (5) surface phosphorization and saponification treatment are conducted on the blank material; and (6) the blank material is put into a forming cavity of a cold extrusion forming mold, cold extrusion machining is conducted for one time or many times, a combined gear tooth profile with an inverted cone and a deep groove are formed at the same time in the cold extrusion working procedure, and the combined gear which is of a deep groove structure and is provided with the inverted cone is obtained. According to the preparation method for the hybrid car automatic transmission deep groove type combined gear, each tooth profile insert can be made to independently, synchronously and precisely move in the radial direction on a general press; the effect that the complete combined tooth profile is formed in a combined mode through moving is ensured, and the precision of the tooth profile is greatly improved; and tooth profile radial extrusion is achieved, the moving space of the tooth profile inserts in the combined gear product deep groove is ensured, and the effect that moving is smooth and unimpeded is ensured.
Description
technical field [0001] The invention relates to a method for manufacturing a coupling tooth of an automatic transmission for a hybrid new energy vehicle, in particular to a method for preparing a deep groove type coupling tooth for an automatic transmission of a hybrid vehicle. Background technique [0002] The shift gear of the hybrid electric vehicle automatic transmission is an important part in the hybrid electric vehicle automatic transmission, which plays the role of shifting and transmitting torque. However, during use, it was found that there are generally missing teeth in the coupling teeth, the gear accuracy is not high, and the gear shifting is not smooth; and the shifting gears are not up to standard, which will cause problems such as shifting frustration and loss of gears during driving. [0003] In the prior art, the shift gears of the hybrid automatic transmission are usually machined by lengthening the wheelbase of the gear. Firstly, the length of the wheelba...
Claims
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IPC IPC(8): B21K1/30B21J5/02B21J1/02B21J1/00B21J1/06
CPCB21J1/00B21J1/02B21J1/06B21J5/02B21K1/30
Inventor 苏涛高章红高凤强敬勇
Owner CHONGQING CHUANGJING WARM FORGING FORMING