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Car milling compound CNC lathe manufacturer share detection method of numerical control lathe spindle bearing

by:SNK     2020-08-27
Car milling compound CNC lathe manufacturer share detection method of numerical control lathe spindle bearing release date: 2019 - 01 - Author: 24 small make up click: car milling compound CNC lathe manufacturer of CNC lathe spindle bearings generally adopt angular contact ball bearing, micrometer is used to inspect bearing inner diameter and thickness, compared with national standard is in accordance with the requirements. Measuring angular contact ball bearing inner and outer circle thickness difference, adopting lever dial gauge, magnetic table, 100 mm long standard block 3 pieces, 1 block marble tablets, 100 mm * 100 mm * 20 mm parallel block 1. Tablet, three standard block 6 face, parallel to the magnetic table base, block under the clean, the standard distribution of 120 ° on the tablet, angular contact ball bearing hooks up on top of standard pieces of magnetic table on the parallel block absorption, will leverage on dial gauge head towards the mouth under the angular contact ball bearing outer ring end surface, make the lever micrometer head down 0 chang 4 mm or so, read the dial indicator reading and record. With handle gently push the parallel block together with the magnetic table c2: in a move to the mouth inner ring face under angular contact ball bearing, read the dial indicator reading and record, calculate the difference between two sets of readings X, namely reading large end face low X smaller than reading. Such as the dial gauge head for - in outer end face reading 0 chang 014 mm, inside face reading is 0, this shows that the inner ring end face 0 chang 014 mm lower than the outer end face. Bearing, in turn, placed the same, will leverage dial gauge upside down in angular contact ball bearing outer ring end face and the upper side header pressure 0 chang 4 mm or so, read the dial indicator reading and record. Then moved to the inner ring end face read the dial indicator reading and record, calculating difference between two sets of readings Y, namely reading large end face Y higher than reading the small face. Such as micrometer head in the reading of the outer end face of 0 chang 014 mm, inside face reading is 0, this suggests that the angular contact ball bearing a flowing within the end 0 chang 014 mm lower than the outer end face. Using the above process in symmetrical four measuring points on the circumference of a circle, better measured values for the same, if measured on four points vary by 0 chang 01 ~ 0 chang 02 mm can also be used, if the difference is too big, the bearing is unqualified. Control requirement and principle of temperature control system of the measuring point by using the thermal resistance temperature measurement, using multi-channel digital instrument to display the temperature of the spindle bearing. PLC to realize the parameter setting, remote monitoring, data storage and alarm processing, and other functions. In actual programming process, don't need to write the storage device to read and write PLC program, through the way of data definition, after the I/O variables, can be directly used variable names for system control, operation display, data record and alarm, etc. A system set up the start button to start the control program, set up two red, green had put lights to display the temperature condition. The temperature of the four points within the request category, green light, the spindle can be normal operation; When one is measuring point temperature reached highs, even if the spindle speed is not reach requirement, the red light, the numerical control system at the same time display bearing of absolute should report to the police. The operator will run the spindle end immediately, and according to the corresponding alarm, check the status of main shaft bearing corresponding location, to prevent the spindle bearing grind.
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