Within the circle grinding tool spindle main surface machining process arrangement

Within the circle grinding tool spindle parts diagram. The part drawing shows that the spindle ladder shaped, it has installed support bearing and transmission parts of cylinder and cone surface, install sliding gear spline, install the chuck and the top of the inner and outer conical surface, the connecting fastening nut helical surface, through the deep hole of bar, etc. The following respectively introduce the spindle each part of the main functions and technical requirements. Within the circle grinding tool spindle main processing surface & Oslash; 16日,众人; 17. 78年,帕; 18日,众人; 30岁的参赛者; 40 journal, two supporting shaft neck and head cone hole. Their processing dimensional accuracy between IT5 ~ IT6, surface roughness Ra of 0. 4 to 0. 8 m。 Spindle machining process can be divided into three phases, namely the roughing stage ( Including milling face, machining center hole, rough turning cylindrical, etc. ) ; Semi-finishing stage ( Half fine car cylindrical, drill hole, cone, cone hole, drill head face each hole, finish turning cylindrical, etc. ) ; Finishing stage ( Including fine milling keyways, coarse and fine grinding cylindrical, cone and cone hole, etc. ) 。 In the middle of the machining process still need to insert the necessary heat treatment process, which determines the spindle machining the major surface always followed the following sequence, namely rough turning and conditioning ( Prepare heat treatment) - half essence car and car - quenching - Tempering ( The final heat treatment) To coarse grinding, fine grinding. To sum up, the main shaft on the surface of the main processing order are arranged as following: cylindrical surface rough machining ( In top hole location) Semi-finishing and cylindrical surface ( In top hole location) To drill hole, In the cylindrical surface positioning of semi processed) Rough machining (tapered bore - With half a processed surface of the cylindrical positioning, processed with cone plug) - cylindrical surface finishing ( In cone wall top hole positioning) - taper hole finishing ( To finish machining cylindrical surfaces) 。 When the main surface processing, after the confirmation of order will be properly inserted the main surface machining process. For main shaft surface other than the main refers to the screw holes, slotting, thread, etc. These surface processing general is not easy to appear, so try to arrange in the process, once out of the waste main surface processing, the main surface preparation, it can avoid the waste of time. But these surface can't on the main surface finishing, in case of damage in the process of machining surface other than the main major surface has been processed. For anyone who needs on hardening surface machining screw hole, slotting, etc. , should be arranged before quenching process. The hardening on the surface of screw hole, slotting, such as general outer circle after finish turning, fine grinding before processing. Main thread, because it between spindle bearing journal has certain alignment requirements, so the thread arrangement in the quenching - Tempering for finish machining stage after the final heat treatment process, the distortion caused by the residual stress after semi-finishing and after the heat treatment deformation, will not affect the thread processing precision.