Manufacturing method of linear complex special shaped spring

1. A forming method of linear spring has the following steps: on the extension line of a main shaft center line, around the center line of the wire guiding spindle, three or more forming tools arranged radially are pushed forward in the direction perpendicular to or basically perpendicular to the central line of the main shaft, and the impact of the forming tools is sent in from the top part of the main shaft The method also comprises the following steps: rotating a rotary table with forming tools installed on it around the center line of the main shaft so that the wire contact surface of at least one required forming tool is in a direction suitable for the wire rod forming; After the rotation of the rotary table, the required forming tool is pushed forward to the extension direction of the central line through one of the driving devices cooperating with each other. The number of the driving devices is larger than the number of the forming tools, and is arranged radially around the center line of the main shaft outside the rotary table for forming linear spring.

2. The method according to claim 1, which is characterized in that the spindle rotates around the center line of the spindle.

3. The method according to claim 1 or 2, which is characterized in that the wire rod is fed from the top part of the spindle and fed in the step of rotating the rotary table equipped with the corresponding forming tool around the center line of the main shaft. As a result, the wire contact surface of the required one or more forming tools is in the direction most suitable for wire rod forming.

4. A linear spring forming device, in which there are three or more forming tools arranged radially around the center line of the main shaft for wire guiding, and push in the direction perpendicular to or basically perpendicular to the center line of the main shaft towards the extension direction of the central line of the main shaft, and the forming tools strike the wire rod sent in from the top part of the main shaft, The device is characterized in that it also includes: a first driving device for rotating the rotary table, and the corresponding tracks for moving forward and backward of the sliding components equipped with forming tools are fixed on the rotary table. These sliding components can advance and retreat along the extension direction of the central line of the main shaft along or basically perpendicular to the central line of the main shaft; The second driving device is arranged radially outside the rotary table around the center line of the main shaft to make the required sliding component move forward and backward towards the extension line of the central line of the main shaft; a third driving device is used to feed the wire rod from the top part of the main shaft; The first driving device and the second driving device are controlled to be synchronized with the third driving device.

5. The device according to claim 4, which is characterized in that the spindle can rotate around the center line of the spindle, and can be converted between two situations: one is that the spindle is fixed by a connecting member and cannot rotate; the other is that the spindle is connected with the rotary table through another connecting member, so that it can rotate with the rotary table.

6. The device according to claim 4 or 5, which is characterized in that the driving source for the second driving device is located outside the rotary table and is mounted on a driving source mounting platform which can rotate around the center line of the main shaft within a predetermined angle range.

7. The device according to claim 4, 5 or 6, which is characterized in that the second driving device is provided with an arc cam which can move forward and backward in the extended direction of the central line of the main shaft, and when the cam follower of the device on the sliding component moves to the closest position to the spindle in the state of contacting with the inner surface of the arc cam, the arc-shaped inner surface of the arc cam is provided The center of the face is basically on the center line of the above-mentioned main shaft.
8. The device according to claim 7, which is characterized in that the arc cam can be spliced with an auxiliary cam at its end.