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Product is an effective method of choice depending on the circumstances. Stress Analysis of rotating screw fastening screw fastening nails are widely used (axis) into the gap from the perspective of cooperation with the (loose with) and the interference fit (tight distribution). We generally use loose with the size of the hole than the shaft size is 5 to 1O wire (0.05 ~ 0.1Omm); while the tight pore size distribution than the shaft using small size 1O to 15 wire (010-0.15mm .) Such as insufficient tightening force, Tony u should be Zhahua axis, Zhahua axis generally have two types of point, while others called ring, but pay attention to the safety bar pattern (that is, whether favorable side or sharp points). Tighten the screw (shaft) design similar to the screw design, in particular, the design size is almost the same. This is mainly about the direction of the force, as shown in Figure: fault lines in Figure 1 Figure 2 Figure 3 When the B pieces by fastening screw fastening pieces connected to the A B-inch, in the torque and tension tests, A piece of the wall will may break (fracture line in Figure 3), as in Figure 3 A force as the focal piece in the wall will allow for the role of nail head strength dispersion. According to the definition of P = FS,mbt schuhe koeln, the pressure and the force and endurance proportional to the area, so the pieces can withstand the force of B than A piece of silk is the root of the force on a large column, if the A1 and B pieces of the same bovine material, A column is the root of the first pieces of broken wire, the B-inch to the solution of the following: (1) refueling, the A1 bit more into cattle feed, such as PC, PA, etc., (2) to A piece of silk column with ribs; (3) A piece of wire to open up the column, if possible, add a little bit longer, making the nails to pass through the walls of B pieces. Figure 2. (4) to change the direction of nail head, making the fastening nails through the A piece, tight with the B pieces. Figure 1. (5) A1 cattle and intensify the contact surface of B pieces, as in B with a large piece of silk on the column and the AYq: the wire trap column, and arrived with the A piece of the wall together, to increase Distributed interface tension. In practice, the screws pulled out directly from the wire and pull columns in the case of little less than 21Lbs. If any, play through the nail flowers, or a way to improve and glue, and the most common problem is shown in Figure 3 A piece of silk column root crack. Practice shows, sometimes even if the addition of ribs will pull off even with the ribs, beer, mainly because on the one hand parts in Figure 3 A good liquidity, while the other is turning to wear nail is a nail through connection of two or several parts,ugg boots sale, of which one or several components can rotate around the screw fastening,ugg schuhe deutschland, this action at all to use a lot of toys, a day can also use half-inch screws, which screws Only the beginning part of the thread, and thread roots to the screw cap of a length of light, and the rotating parts to wear in the optical axis, making the fastening components can freely after the turn. 1 hole on the plastic cow because of many reasons to touch the piercing (which is formed by the upper and lower halves of a semi-circular hole), especially since the direction of a mold problem. Touch perforated pan with very plant, but if the rotation of the connected nails are all touched a few pieces of perforated hard to make the rotation axis (screw) fixation (tight with) live in the crash test will most likely B-inch iron shaft to hit out, so the best can not touch a single piece perforated, and with tight with the iron shaft (screw) in place. In addition to ABS material, for example, perforation of the two parts touch each semicircle - cut length can not be less than 4mm, would be difficult to withstand the pull of more than 21lbs. Strengthen the application of the fixed shaft fixed to strengthen axis, is generally used to enhance the destruction of parts to withstand the test of reasonableness, that is marked with a hole in the wire axis to enhance the performance of parts, the design of the wire size than the column axis the diameter of the small 5 wire (O.05mm). Here are some of the installation fastening screws (axis) of the common conditions generally in the production presses (beer) directly into the fastening screw (shaft) of the end of the pressure into its force. (1) with a nail head of the fastening shaft assembly, generally in the pressure to nail the parts that make a regular fixture, the workpiece with the wire fixed in the above column, and the nail through the hole in the system parts, and to stick to beer nail head pressure head, forcibly pressed into the wire of its column, (2) does not take the lead in both ends of the shaft must be pressed into the workpiece, such as: wheels, in which case the general two step, a first axis into parts, then the axis of the workpiece with another workpiece to the pressure. The most common problem is the axis of the string between the two parts allows the two parts of a dynamic one and not in place, this B 1-inch fixture engineers Seoul should be resolved through consultation. (3) with a song with the installation of the shaft moving parts, to ensure there is enough room to turn the workpiece to rotate, this problem is by adjusting the beer machines in their journey to control. In short, the shaft design is one thing, the design feasibility of installing an important factor. ■ 77
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