New energy automobile transmission intermediate shaft production technology
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A technology for new energy vehicles and production processes, applied in the field of automobile transmissions, can solve the problems of difficulty in meeting the quality requirements of new energy vehicle parts, poor compactness, easy fracture and damage, etc., and achieves dense grain structure and mechanical properties. High, short production cycle effect
Inactive Publication Date: 2020-05-08
江苏威鹰机械有限公司
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The above two patent applications disclosed by the State Intellectual Property Office, one is that hot forging process is used, which consumes a lot of energy; It is easy to break and break, and it is difficult to meet the quality requirements of new energy vehicle parts.
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[0016] Example: see figure 1 As shown, a new energy vehicle transmission intermediate shaft blank includes a rod part and a cam provided on it, and the rod part is sequentially provided with a second cam 1 and a first cam 2 for subsequent processing into gears from left to right, Between the second cam 1 and the first cam 2 is an intermediate shaft portion 3 .
[0017] see figure 2 with image 3 As shown, the production process of the intermediate shaft of the new energy vehicle transmission includes the following steps: ① blanking: cutting the required metal bar; Annealing treatment, spheroidization rate ≥ 90%, surface hardness ≤ 80HRC; ③ Billet shot blasting phosphorus saponification: remove surface defects, sand blasting, lubrication treatment; ④ Reduced diameter extrusion: reduce diameter cold extrusion of the above bar through the mold ; ⑤ Upsetting cold extrusion: Upsetting and cold extrusion of the above bar through the mold, so that the first cam is formed on the r...
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Abstract
The invention discloses a new energy automobile transmission intermediate shaft production technology. The new energy automobile transmission intermediate shaft production technology comprises the following steps of (1), blanking; (2), spheroidizing annealing; (3), blank manufacturing, shot blasting and phosphorus saponification; (4), reducing extruding; (5), upsetting cold extruding, specifically, upsetting cold extruding is conducted on a bar through a mold, and a first cam is formed on the rod portion of the metal bar; (6), annealing treatment; (7), shot blasting and phosphorus saponification treatment; and (8), upsetting forming, specifically, a blank obtained after shot blasting and phosphorus saponification treatment and a split-ring mold are cooperatively put into a forming mold tobe subjected to upsetting cold extruding, a second cam is formed, the inner cavity structure of the split-ring mold is matched with the outer diameter of an intermediate shaft, the outer diameter structure of the split-ring mold is matched with the inner cavity structure of the forming mold, and the split-ring mold is arranged above the first cam. According to the new energy automobile transmission intermediate shaft production technology, a cold forging manufacturing technology is adopted, the production period is short, the material utilization rate is high, the machining cost is low, the grain structure is compact, the mechanical performance is high, and the mating requirements of new energy automobile parts can be met.
Description
technical field [0001] The invention relates to an automobile transmission, in particular to a production process for an intermediate shaft of a new energy automobile transmission. Background technique [0002] The intermediate shaft is the main part in the automobile transmission, and it is in a complex stress state when it works. The working conditions of the intermediate shaft require the intermediate shaft to have high strength and fatigue resistance, and at the same time require sufficient rigidity and toughness. figure 1 The forging blank of the intermediate shaft is shown, and the second cam 1 and the first cam 2, which are subsequently processed into gears, are arranged on the rod part in sequence from left to right, and the intermediate shaft part is between the second cam 1 and the first cam 2 3. The current traditional die forging method has long process, low material utilization rate, large amount of outer diameter processing, low production efficiency and high...
Claims
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Application Information
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