Automatically continuously variable transmission (CVT) V-shaped belt pulley axle finish-forging and plastic- molding process
An automatic transmission, plastic forming technology, applied in the field of CVT transmission V-belt pulley
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Embodiment 1
[0018] Its plastic forming process includes the following steps: ① Warm forging plastic forming: including a, material cutting: cutting metal bars with a circular saw; Surface chamfering, shot blasting: put the billet into the shot blasting machine for surface sandblasting; c, coating: heat the above metal bar to 150-200 ° C, soak in thin graphite, and carry out surface coating; d, normalize after heating Extrusion: Heat the above-mentioned coated billet to 800-900°C and put it into the die, extrude the upper end surface of the billet, so that the rod becomes a three-section cylindrical rod with different diameters and lengths and The transition section between them; e. Upsetting extrusion: Put the billet that has been extruded into the upsetting die immediately, and in the closed mold cavity, perform upsetting extrusion on the billet to form a double-ended rod Part 6 and middle disc part 7; f. Preforming positive extrusion: In the closed mold cavity, the billet is extruded to...
Embodiment 2
[0022] Embodiment 3: A CVT automatic transmission V-shaped pulley shaft precision forging plastic forming process, the production steps are the same as in Embodiment 1, the difference is that the input end 1 is a circular platform connected to a cylindrical structure.
Embodiment 3
[0023] The embodiment is only for the convenience of understanding the technical solution of the present invention, and does not constitute a limitation to the protection scope of the present invention. Any simple modification, equivalent change and Modifications still fall within the protection scope of the present invention.
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