Views: 0 Author: Site Editor Publish Time: 2020-09-04 Origin: Site
Coarse threaded, multi-spindles are widely used for the automatic unscrewing the thread-forming workpiece. The spindle 2 is generally arranged in the centre line of the mold as hown in Fig. 6.57. The nut I is prevented from turning. When the mold is opened, the nut 1 fitted to the spindle 2 engages the ejector bar of the machine and turns the spindle, which drives the gears 3 and 4. The threaded core 5 connected to gear 4 is unscrewed out of the workpiece.
