Porcelain tiles scraping during heavy equipment parts of the structure of the gear hob design improvements

Porcelain tiles scraping during heavy equipment parts of the structure of the gear hob design improvements - 2020 01 - 10 WeiHouCheng current pacify thick equipment for early shave pacify thick equipment hob shaft system design and selection of the bearing is not very reasonable, lead to hob shaft system cannot meet the demand of the use of existing, in use process there are many defects: being idle at work or with load operation, bearing the noise is big; At the same time in vibration and shock; Hob cutting force is not big enough, the scraping tile efficiency is not high; Late bearing is easy to damage, leading to frequent maintenance equipment, seriously affected the production and maintenance cost also increased. 。 。 。 。 。 (1) the driven pulley; (2) main shaft; (3) fixed end bearing; (4) hob; (5) hob; 6 bricks; All landowners activity end bearing; Today positioning pin; Pet-name ruby activities before end bearing improvement of hob parts structure schematic new structure design introduction 01 design thinking mainly from the structure design is improved maintenance, stability, efficiency, noise reduction and so on several aspects. First, in order to ensure the hob on each bearing concentric, then when the hob design frame, to ensure that both ends of bearing machining accuracy meets the requirements, improve the assembly accuracy, but also improve the stability of unit running; Second, hob bearing installed at the ends of the frame are designed for removable structure, namely the connection with the hob frame for the assembly structure, provides the convenience for maintenance, and will not damage the hob and bearing seat; To enhance the skiving hob runtime, the pulley on the spindle appropriate increase, which increase the pulley belt Angle. 02 structure design pulley; (2) main shaft; (3) after the activity bearing; (4) cylindrical roller bearing; (5) deep groove ball bearings; 6. Hob; All landowners hob; End up bricks; Pet-name ruby end bearing; Attending activities bearing the improved hob parts structure schematic structure can improve the features are: on both ends of the left and right sides hob design for cylindrical mounting holes, corresponding to the left and right sides on both ends of the design for assembly with the hob frame structure, bearing housings are detachable, convenient maintenance in the future. Hob frame on both ends of the cylindrical hole through processing to ensure alignment, bearing and gear hob at the ends of the frame assembly surface also processed, and clearance fit in the hole base system. After left above the activity within the bearing seat, bearing arrangement is set to two deep groove ball bearings and cylindrical roller bearings, bearings with spacer is separated in the middle. Pulley end arranged four bearings and bearing seat, aim is to increase the spindle bearing capacity and concentricity, hob frame to the right bearing seat is made of the basic hole system coordination, cancelled the original positioning pin, concentricity guarantee, improve the concentricity of the spindle, make the main shaft on the hob when running more smoothly, reliable, bearing and gear hob assembly easier, even if late bearing damaged, replace new bearing, also need not worry about the problem of positioning are not allowed to. The bearing within the bearing seat is made of the cylindrical roller bearing, replace the original spherical roller bearings, run more smoothly, the noise is smaller. In hob drive motor power, motor series, such as frequency under the condition of unchanged, through increasing ratio, to improve the operation of the hob spindle speed, so as to improve the cutting efficiency of hob. 03 parts assembly after the completion of the commissioning test hob, noise and vibration has improved significantly, the individual activities bearing has a fever, temperature on the high side, the sleeves are good but the overall condition experiment. Improve the structure of hob parts after amplitude significantly smaller than old hob frame parts, vibration of improvement. Noise was obviously lower than the old hob parts of noise, basically can keep below 80 db (a) and the ambient noise measurement for 50 to 55 decibels. Vibration analysis and discussion of 01 compared to most of the new hob structure components are smaller than old hob structure vibration, vibration hob vibration of just the individual slants big, bigger than old vibration cutter frame parts, the reason mainly has: parts assembly does not meet requirements, such as the hob, guide the preload of strip adjustment does not reach the designated position, clearance is too large; Drive wedge with installation according to assembly process, or a wedge with quality problems, the transmission is not smooth; Good individual fasteners without fastening; Hob on the spindle dynamic balance not up to par, and so on. 02 noise compared to the improved structure noise is significantly lower than the old hob parts structure, the improvement is successful. Main reason: hob structure made improvements, cylindrical hole concentricity guaranteed. Activities within the bearing seat at left bearing changes to the structure and model selection, the cylindrical roller bearing, the bearing stable operation, large load. 03 assembly contrast the structure not only from hob shaft system improvement, also from the outside to improve, such as drive motor assembly way, motor after installation is firm, no vibration clearance; Motor of center of gravity is better than the old hob parts centre of gravity is lower, lower center of gravity, also reduced the length of the wedge with more, decrease in the operation of the wedge with more, with the tight and loose while the vibration frequency, so as to reduce the vibration of hob structure. Bring about improvement of structure of hob parts assembly is adapted from the foshan ceramics. 2018. 09 period