What Causes Indexing Angle Deviation in Rotary Indexing Tables?
First of all, the transmission indexing of the rotary indexing table is not accurate, that is, the deviation of the indexing angle of the output shaft we call it, for the disc machine, the processing station must be consistent with the stop position of the fixture, and the stop time of the indexing should also be unified with the processing requirements. In the course of normal use, when there is a deviation, it is necessary to check whether the angle of the signal cam installed on the input shaft and responsible for signal transmission is consistent with the driving angle of the input shaft of the indexing table. If it is loose, the angle between the two components will deviate. When displaced, the signal transmitted by the light sensor or proximity switch will advance or lag behind.
The input axis of the rotary indexing table rotates continuously 360 degrees. During rotation, the input cam completes the division and stop of the output shaft, so it is necessary to pay attention to whether the output shaft stops during the stationary period when the output shaft rotates from motion to stationary or from stationary to moving the input shaft to the resting angle position. For the standard model of the indexing table, in order to accurately find the standard position of the indexing position, it is necessary to find the position of the keyway in the static cycle, that is, when the input axis of the keyway is perpendicular to the output axis, it is the center point of the angle of repose of the rotating indexing table.
When checking the indexing angle, it is necessary to remove all other components such as the turntable connected to the output shaft of the rotary indexing table to ensure that the indexing table is running under no load, and to check whether the output shaft has inertia, and if possible, it can be returned to the production plant to measure with a high-precision goniometer. When it is confirmed that the indexing positioning exceeds the standard indexing, the equipment manufacturer will readjust or replace the cam.
How to Address Inaccuracies and Component Failures in Multi-Station Operations?
Sometimes it also happens in multi-station operations. Loosening of one or more stations is caused by damage to the needle roller bearings of the relevant stations and the roller bearings need to be replaced.
If all stations are loose or inaccurate, the cam mechanism of the rotary indexing table is damaged or damaged. This is rare in real-world applications, and most of them occur when the machine crashes or is running under severe overload. Conditions caused by use. The solution was that only the returned plant was repaired.