In order to reduce the precision forging load of spur gears and improve the dimensional accuracy of the forged part and tool life,a forming method of spur gear was put forward based on the analysis of the influence on load in closed die forging,by which the teeth were filled well and the divided flow hole was made in the preforming to reduce final forging load.The new forming process and die-sets were developed,and a divided flow hole was formed by pre-forging and it was benefit to reducing the final forgin...
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