In the design, it is required that the pin pin holes on the cycloidal pin housing are evenly distributed and parallel with the central axis. Therefore, the pin holes on the cycloidal pin gears of the domestic processing are generally used for manual lifting multi-tooth precision points. Degree table to improve the manufacturing precision of the pin hole, but the up-type multi-tooth precision indexing table is in use, such as dust entering between the upper and lower sprocket, which will affect the parallelism between the work surface and the bottom surface of the base. Accuracy of the teeth, thus affecting the manufacturing precision of the pin housing. If the non-lifting multi-tooth precision indexing table is used, the above disadvantages can be overcome. Therefore, the structure and working principle of the two multi-tooth precision indexing tables are known. The understanding of the performance of engineers and technicians helps to correctly select the type of multi-tooth precision indexing table. This paper also proposes multi-tooth precision indexing based on the common gear ratio of a tooth difference and a two-tooth differential cycloid reducer. The corresponding number of teeth for the purpose of the selection of the cycloid reducer production plant, but also the production of the multi-tooth precision indexing table production plant.
After the dynamic indexing, the handle is pushed counterclockwise, the nut is rotated to lower the screw, the table is also lowered, and the upper and lower sprocket plates are fitted and positioned. The multi-tooth precision indexing table is in the indexing stage. To be lifted, it is called the uplifting multi-tooth precision indexing table. The utility model has the advantages of simple structure and low manufacturing cost. The disadvantage is that the worktable not only has to be partially rotated, but also moves up and down once, and the felt ring is easy to wear, so the sealing property is poor, such as dust entering the upper and lower teeth. Between the discs, the multi-tooth indexing table will lose high indexing accuracy, and will affect the parallelism of the table facing the bottom surface of the base, so that the distribution uniformity and parallelism of the pin holes on the machined pin housing are reduced and manual When operating, it is more laborious to lift the fixture and workpiece on the workbench.
The structure and working principle of the upper multi-tooth precision indexing table is the structure of the upper multi-tooth precision indexing table. The lower end surface of the table and the upper end surface of the base work have precise face teeth, so it is also called The number of teeth on the upper and lower spurs is equal. When the number of teeth is an integral multiple of the required aliquot, the base is fixed. The table is lifted first and then indexed. The positioning of the table is based on one. The matching surfaces of the upper teeth of the upper and lower spurs are positioned, and the handle and the rotating nut are screwed together, and the rotating nut and the screw are matched, and both are right-handed threads, and the rotating nut is at the bottom when the handle is clockwise in the circumferential direction. The surface of the cover is partially rotated, and the screw is moved upwards. The screw lifts the thrust bearing, the mandrel and the table to disengage the upper and lower tooth plates. At this time, the table can be used for indexing and turning without lifting. The structure and working principle of the indexing table The structure of the non-lifting multi-tooth precision indexing table is as shown in the figure. The lower toothed disc is fixed with the lower end surface of the table, and the upper toothed disc is supported by the thrust bearing on the base. And the screw is screwed together, The rod sleeve is sleeved on the positioning sleeve, the positioning sleeve is fixed on the base, the guide pillar is fixed on the screw, and the guide pillar is inserted in the guide sleeve. In order to reduce the friction between the guide pillar and the guide sleeve, a radial bearing is arranged between the two parts. The sleeve is fixed in the guide sleeve frame, and the guide sleeve frame is fixed on the base by screws. Therefore, when indexing, the upper toothed disc and the screw can only move up and down, and the number of teeth of the upper and lower toothed discs cannot be equal, and the number of teeth is required. Integer multiple, the base is fixed when indexing, and the hand lever is pushed clockwise in the circumferential direction, so that the rotating nut is partially rotated on the flange plane of the positioning sleeve, the screw and the upper toothed disc are raised together, and the upper and lower toothed discs are disengaged. Then, the table is rotated by hand, and then the lower tooth plate and the table rotate together, and then the hand bar is pushed counterclockwise, so that the screw and the toothed disc are lowered together, and the upper and lower toothed discs are engaged with each other. When the multi-tooth precision indexing table is indexed, the table is not lifted, so it is called a non-lifting multi-tooth precision indexing table.
Polo Shirts,Hollowed-Out Girls Summer T-Shirt,Red Hollowed-Out Girls Summer T-Shirt,Blend Girls T-Shirt For Summer,Cotton Linen Blend Girls T-Shirt
XUANZI GARMENT CO.,LTD. , http://www.xzgirldress.com