[China Glass Net] 1, replace the grinding wheel should choose the original specifications, such as 150 diameter can not be 175 diameter grinding wheel interchange
2, choose high-performance grinding wheel, 1, 2, 3 performance should be consistent, high and low grades will have a bottleneck effect.
3, the grinding wheel has a reasonable particle size connection. In principle, the overall efficiency should be ensured. The latter stage should be able to correct the chipping wear marks of the previous stage and keep moving closer to the light.
4, the deployment can not be based on the current meter swing or noise level and other experience debugging, should always exit the glass to check the wear scars. The balance ratio of No. 1, 2, and 3 should be close to 7.5:2:0.5. The grinding amount of No. 2 should be controlled within 1mm.
5, the grinding wheel should try to use the front and rear ring working mode (that is, the swinging angle of the grinding wheel), the processing ratio of the front and rear rings is close to 8:2, the grinding amount of the rear ring should not be too large, and the front ring wear marks should be covered evenly and finely. The front and rear rings of the grinding wheel are opposite in direction, and the shape of the end face should be maintained at the factory shape and angle when the grinding wheel is consumed.
Third, the common problems and answers during the use of the grinding wheel
Question 1: After the glass is ground by the bilateral machine, there are still some phenomena such as chipping, falling corners, grinding and printing.
A: The grinding wheel particle size is not suitable or the performance is poor. The particle size should be adapted to the thickness range of the processing glass and the processing speed. For example, the No.1 and No.2 grinding wheels are equipped with 80 meshes +140 meshes. The 8mm-25mm glass is very good, and the grinding is 5-6mm. May collapse, generally should choose 100 mesh + 140 mesh to meet the requirements of 4-19mm. In addition, the No. 1 grinding wheel distributes the grinding amount too much to cause a small collapse. No. 2 should be able to correct the chipping and completely cover the No. 1 wear scar. The No. 2 is neglected, and the selected performance is poor. Although the appearance is No. 1, the problem should be Replace the high-performance No. 2 wheel and re-commission the reasonable distribution of machining allowance.
Problem 2: The working end angle of the grinding wheel is more outwardly inclined than the factory angle, and the outer low and high internal inclination are obviously increased, and even the inner and outer stepped step shapes appear.
Answer: The angle of the front and rear rings is not suitable or the motor is loose. The working force on the outside of the front ring is too large, and the rear ring is not working. It is necessary to adjust the angle of the motor and fix it in time.
Question 3: The working end of the grinding wheel is close to the horizontal level, even the outer side is low in the inner side, and the remaining one third of the final grinding wheel cannot be used.
Answer: The front and rear ring angles are not suitable or the motor is loose. The outside of the front end is not working, and the inner working capacity of the rear ring is large. The angle of the motor should be adjusted and fixed in time to properly distribute the front and rear ring machining allowance.
Problem 4: There are impact marks on the outside of the grinding wheel, or there is a phenomenon that the end face is annularly recessed, the alloy is bright, and so on.
A: This phenomenon occurs mostly in chamfering wheels or fine diamonds No. 2 and No. 3 grinding wheels. The reason is that when replacing a new grinding wheel or processing a thick glass span, the advance and retreat positions of the grinding wheel are not adjusted in time, causing the glass to directly hit the outside of the grinding wheel. , or the amount of processing dispensed greatly exceeds the range of the grinding wheel, and is not corrected in time. It should be noted that the grinding wheel is first retracted and the grinding amount is gradually followed.
Question 5: There are still 2mm deep teeth in the whole gear that will collapse, commonly known as grinding, and can not continue to use.
A: The depth of the nozzle of the full gear = the height of the working layer + 1.5mm. The 1.5mm left of the working ring inside the grinding wheel indicates that the working layer has been exhausted. In order to prevent the grinding wheel from consuming 1/3, the machining allowance is large or thick. When the glass is used, the glass will impact the outer body of the grinding wheel, and the outer side of the working side is designed with a 3mm high corner. Therefore, the outer side seems to have 4mm of exhaustion, and the actual working layer is completely consumed.
It is used to bolt thin sheet metal parts to larger, often billet or forged, parts. The barrel nut is a round slug, or formed sheet metal part with threads perpendicular to the length of the nut. The nut sits in a hole inside the forging and a standard bolt is threaded into the barrel nut from outside the sheet metal. They are preferred over a standard nut and bolt, because they do not require a flange to be machined or forged onto the receiving part, thus reducing weight.
Furniture cross dowel barrel Nuts are cylindrical shaped metal nuts (metal dowels) used with furniture connector Bolts to join two pieces of wood. The inside threaded hole is unusual in that it passes through the sides of the dowel. To install, the pieces of wood to be joined are aligned, then a bolt hole is drilled through one piece of wood and into the other. A dowel hole is drilled laterally across the bolt hole and the cross dowel is inserted into it. The end of the cross dowel is slotted so that a screwdriver can be inserted to rotate the dowel so that its threaded shaft aligns with the bolt hole. The furniture connector bolt is then inserted into the bolt hole and screwed into the cross dowel until the wood pieces are held tightly together.
dowel nut, barrel nut, cross dowel nut
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