Deep groove ball bearing destructive remove special structure design

Deep groove ball bearing destructive remove the special pull 2019 - structure design 11 - 20 bearing is common in machine parts. Bearing removal is common in machine maintenance job content. Because the types and specifications of the bearing is various, the bearing removal tool are different. Because remove work need maintenance personnel also designed a variety of remove the puller, such as ordinary three-jaw puller, remove with the circlip groove bearing special puller, etc. Three-jaw puller as radical size larger when removing need to occupy a large space, so its use is limited by a machine installation space condition. Some bearing in the machine because of the space is narrow, ordinary puller is unable to pull out of the bearing. Some bearing due to reasons such as rust, damage to make removal difficult. Given that many bearing maintenance after removal will replace new bearing, bearing and the bearing of removed also no longer use. In view of the destructive remove deep groove ball bearing, this paper designed a kind of destructive removal of deep groove ball bearing pullers. , due to the machine function and structure of the problem needs, bearing in the machine installed in all kinds of structure. Because the function demand of bearing on the choice of installation position and cooperate with nature and also each are not identical. If cooperate with tighter, the installation space is narrow, remove the difficulty will increase. If because of other reasons cause bearing rust, disassembly will be more difficult. As shown in figure 1, bearing on the right side is gear, gear and bearing between the space is lesser, cooperate for surplus bearing outer ring and bearing hole, only after pulling away bearing can remove from the left side of the gear shaft. Repair if the bearing's outer ring with a hole corrosion situation, take out the bearing and gear shaft will become more difficult. From the right through the tap on a bearing outer ring that bearing from bearing seat and don't have enough space, therefore can only consider from the left side of the bearing. Someone may consider using flame heating power, heating method remove bearing and shaft bearing hole, but that would cause a hole deformation, make the machine function after repair. In this case use deep groove ball bearing special can easily will bearing is removed. Second, deep groove ball bearing destructive remove the special structural design 1. Deep groove ball bearing size and remove the bolt design deep groove ball bearing consists of outer ring, inner ring, rolling element and cage. The inside of the outer ring and inner ring is installed outside of the circular trench roller rolling, rolling body rolling in raceway, as shown in figure 2. Dw, bearing outer ring diameter D2, roller diameter bearing inner ring diameter D2 can query in the mechanical design of the relevant manual. The bearing inner ring and outer ring gap width H can be determined by calculation. Size is H = ( D2- d2） / 2. In the puller design when considering the roller in the rolling between inner and outer raceway loss because of rolling body have the right size and distribution. Design a remove bolts, its head and rolling body size, rolling element to cut off part of as shown in figure 3. Remove, use a screwdriver impact destroyed part of the cage, will remove the bolt from the gaps between the inner and outer ring in the head, then rotate it 90 & deg; To remove the screw ball head embedded between the inner and outer raceway, as shown in figure 4. Port department again even a hammer, hammer by pulling to the left of the slide, have left the pull of the bearing can be pulled out. Remove the bolts in the design of puller design is most critical. If the head size is too large, remove the tie rod head can't through the gaps between the inner and outer ring to ball head parts into between inner and outer ring raceway, cannot realize ball head and the combination of inside and outside the circle. If the size is too small, head out from the inside and outside the circle, with inside and outside the circle chimeric ball head cannot, cannot pull inside and outside the circle at the same time, can't pull the bearing. Therefore, must be removed correctly determine the structure and size of the bolt head. As shown in figure 5 to remove the bolt head structure and size of its size must be associated with the bearing size. Figure in Dw is to remove the bearing steel ball diameter, H to dismantle the bearing gap width of bearing inner ring and outer ring. A ball head and the diameter of the threaded portion of the link rod, to be less than or equal to H. Considering in the disassembly facilitate will remove the bolt head load bearing, can be in figure 5 Dw design size of the upper and lower deviation are negative. The correct size to ensure correct can remove the bolt load bearing between the inner and outer circle and remove the bolts in the disassembly without escape. 2. Puller to pull the bearing structural design, but also in remove the bolt end connection a hammer, as shown in figure 6. Remove the bolts and connecting nut through the threaded connection, hammer on the slider, then slide bar is linked together with coupling nut, assembled into a combination pullers. Remove the first part is going to remove the bearing cage damage removed, to remove the bolt into the inner and outer raceway space, then remove the bolt into the bearing inner and outer raceway, will remove the bolt 90 & deg; 。 Pull force sliding hammer pull the bearing inner and outer circle at the same time, pull out. In order to remove the bearing a variety of sizes and can produce different size according to the size of different bearings remove the bolt. In order to realize the serialization of products, meet the needs of the maintenance. Of course, if the removal of large size bearing or corrosion serious bearing requires a larger size of the hammer, otherwise not enough tension, cannot pull the bearing. Three, the conclusion deep groove ball bearing is widely used in the machine, repair, replacement bearing homework is very common. For some machines due to the structure of the restrictions on the use of ordinary puller cannot remove the bearing, at the same time in the maintenance of most bearing are not in use, dismantled and destroyed the old bearing does not increase the maintenance cost. This makes destructive dismantled for bearing can repair a choice, the use of this destructive remove the pullers can facilitate rapid demolition of this kind of bearing. To provide convenience for the machine maintenance, greatly improve the efficiency of maintenance work. （ Source: proficient in maintenance download)