Rotary rolling forging device for gyrorotor forging

[0015] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments:

[0016] See attached Figure 1~3 As shown, the rotary rolling forging device of this kind of rotary body forging includes a rotary shaft 2. On the rotary shaft 2, two rotating rotors symmetrical along the rotation center line 7 of the rotary shaft 2 are sleeved, respectively, the left rotating rotor 3 And the right-rotating rotor 4, the left-rotating rotor 3 and the right-rotating rotor 4 are fixed on the rotating shaft 2 through bearings. The two ends of the rotating shaft 2 are installed on the fixing sleeve 1 by interference fit, and the fixing sleeve 1 is installed on the fixing sleeve 1 by bolts 5. On the press 6, the rotation center line 7 of the rotating shaft 2 coincides with the rotation center lines of the fixed sleeve 1, the left rotating rotor 3 and the right rotating rotor 4. The press 6 can drive the left rotating rotor 3 and the right rotating rotor 4 Move down

[0017] A blank 8 is placed under the left rotating rotor 3 and the right rotating rotor 4. The blank 8 is fixedly installed on the lower mold 9. The rotation center line of the blank 8 and the lower mold 9 coincides with the rotation center line 7 of the rotating shaft 2, using a press The rotating pier thick platform drives the blank 8 and the lower mold 9 to rotate along the centerline 7 of rotation.

[0018] The blank 8 in this embodiment is a titanium alloy rotator with a maximum diameter of 600-800 mm. The center of the blank 8 is a solid circular structure or a circular ring structure with a hole in the center.

[0019] During processing, the device of the present invention uses the outer contours of the left-rotating rotor 3 and the right-rotating rotor 4 to shape the upper end surface of the processed revolving body forging, and the blank 8 heated to the initial forging temperature is fixedly installed on the lower die 9. And make the rotation center line of the blank 8 coincide with the rotation center line 7 of the rotating shaft 2, apply lubricant on the upper end surface of the blank 8 in contact with the left rotating rotor 3 and the right rotating rotor 4, and then start the rotating pier of the press 6 The rough table drives the blank 8 and the lower die 9 to rotate along the rotation centerline 7 at an angular velocity ω and at the same time the press 6 presses and moves downwards. When the left rotating rotor 3 and the right rotating rotor 4 lightly touch the blank, the lower speed The forging blank 8 is v1 and the pressing distance is h1. The left rotating rotor 3 and the right rotating rotor 4 rotate in opposite directions. Then the press 6 is raised to make the left rotating rotor 3 and the right rotating rotor 4 and the upper end surface of the blank 8 After disengagement, pressure and move downward again. When the left-rotating rotor 3 and the right-rotating rotor 4 lightly touch the blank, the pressing speed is v2 and the pressing distance is h2 to forge the blank 8. Repeat the above actions to rotate and roll the forging blank 8 until the blank 8 is completely formed.

[0020] The calculation formula of angular velocity ω is as follows:

[0021]

[0022] In the formula: v is the pressing speed of the left-rotating rotor 3 and the right-rotating rotor 4 relative to the blank 8 driven by the press 6, which is 0.05 to 20 mm/s, and Dmax is the maximum diameter of the left-rotating rotor 3 and the right-rotating rotor 4, σ is the rotor coefficient, which is 0.01~0.15.

[0023] Compared with the prior art, the device of the present invention requires a lower tonnage of the press, which can be implemented on ordinary presses such as 2000t and 4000t. It does not need to be polished and repaired during the forging process, and the surface quality of the obtained forgings is better, with internal deformation Continuous, no folding, uniform organization.