| 摘要 |
1275416 Making stators; machine tool details M A GOLDSHTEIN and A M GOLDSHTEIN 21 Nov 1969 [22 Nov 1968 (2)] 57008/69 Headings B3A B3B and B3K A method of making a stator core frame 1 of a dynamo-electric machine comprises, slotting the frame to receive stacking ribs 9 removing the frame welding the ribs in the slots, re-setting the frame and then machining at least one seating surface on the ribs. The frame is secured to an aligning device 2 concentrically with a column 4 and secured by a cross-piece 6. A platform 10 is moved along the column 4 by a lead screw 11 and is provided with three milling cutter heads 16, which are mounted on tool carriers (17) and provided with individual drives (18), Fig. 2 (not shown). After each group of slots has been machined, the heads (17) are moved around the platform 10 into the next required alignment. The ribs are welded into the machined slots electrically. An attachment 19 is fastened to one of the ribs 9 and then a drive link 20 is fixed to the platform 10 and placed over the attachment 19 by a spacing disc to prevent tangential displacement of the platform during machining. All the ribs not being machined are similarly secured to the table. After milling the required number of surfaces on the ribs, the cutter heads 16 are positioned for milling the next set of ribs and the drive links 20 are placed over to the milled ribs after removing the attachments 19. When all the ribs have been machined the frame is removed from the fixture for placement of the core laminations. |
