| What is the technology of producing non-standard bolt and nut? |
| ¡¡Hits£º1674¡¡AddTime£º2020/4/30 11:17:27 |
| What is the technology of producing non-standard nuts? Non-standard nuts are always loved by users in the market, because there is no fixed standard, so non-standard nuts need special drawings to customize, so what is the difficulty of non-standard nut production? Let's take a look at this: There are many kinds of non-standard nuts, so what are the difficulties in machining non-standard nuts on the lathe? Machining large-scale non-standard nuts on an ordinary lathe has always been a major problem in machining. On the one hand, due to the large lead of such threads and the deep spiral groove, it is impossible to guarantee the surface finish of the non-standard nut threads. On the other hand, the improved device makes the original spindle speed of the lathe and the moving speed of the lathe carriage increase too fast when the lathe is being dragged, and the tool is withdrawn every time The difficulty is very large, the moving speed of the plate has been reduced a lot, and accidents such as knife breakage or tool holder collision with the workpiece often occur. Now some small products, from glasses to airplanes, which are ignored by us, are inseparable from small things - non-standard screws behind these machines and human great dreams. Screw custom screw, also known as "screw" (screw), "screw" (screw rod). In fact, screws are a general term, while screws and screw rods are different from each other. Screws are generally called wood screws. They have sharp ends at the front, with large pitch. They are generally used to fasten wood and plastic parts. The screw rod is a machine screw (mechanical screw), which has a flat head at the front. The screw pitch is small and even, and it is generally used to fasten metal and machine parts. Nonstandard screws are indispensable industrial necessities in daily life: such as small screws used in cameras, glasses, clocks, electronics, etc.; general screws used in TV, electrical products, musical instruments, furniture, etc.; large screws and nuts are used in projects, buildings and bridges; large screws and nuts are used in traffic equipment, airplanes, trams, automobiles, etc. A good non-standard screw can not be separated from a good processing method, such as a small precision screw of 1.0 used on precision instruments, a large super long non-standard screw used on wind equipment or even aircraft. Today, standard screws introduce you to two kinds of thread processing methods. The processing methods of thread mainly include thread cutting and thread rolling. Thread cutting: generally refers to the method of processing thread on workpiece with forming tool or grinding tool, mainly including turning, milling, tapping (tool: tap or tap), threading, grinding, grinding and whirlwind cutting, etc. When turning, milling and grinding the thread, the transmission chain of the machine tool ensures that the turning tool, milling cutter or grinding wheel moves a lead accurately and evenly along the axial direction of the workpiece every rotation of the workpiece. When tapping (tool: tap or tap) or threading, the tool (tap or die) rotates relative to the workpiece, and the first formed thread groove guides the tool (or workpiece) to move axially. Nonstandard screws are indispensable industrial necessities in daily life: such as small screws used in cameras, glasses, clocks, electronics, etc.; general screws used in TV, electrical products, musical instruments, furniture, etc.; large screws and nuts are used in projects, buildings and bridges; large screws and nuts are used in traffic equipment, airplanes, trams, automobiles, etc. Thread rolling: it is a processing method of forming and rolling die (Title: the mother of industry) to produce plastic deformation of workpiece to obtain thread. It is also a cold heading method commonly used in the industry. The machines used in this production method are generally single-mode machines, multi position machines, die closing machines, etc., while the screws produced by this method are faster and cheaper in production, but compared with cutting In terms of technology, the head and tail of the screw produced by this technology are naturally shaped, with a round appearance, not as sharp edges and corners and beautiful appearance as the cutting technology. But each method has its advantages. Although the cutting speed is not comparable to cold heading, but in terms of accuracy, it is higher than cold heading, and cold heading produces more and faster in terms of quantity and speed, with lower cost, especially when producing those precision small screws, the cost performance of cold heading is higher than that of turning. |
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