In machinery, the pin is mainly used for assembly positioning, can also be used as a connector to transfer power and torque, meanwhile it is widely used as a protection to cut the connection when the safety device overload. Precision stainless steel pins usually use Stainless Steel Dowel Pins, 316 stainless steel, 18-8 stainless steel, and so on. The following uses 18-8 stainless steel pins as an example.
Stainless Steel Dowel Pins Fron China Factory
In machinery, the pin is mainly used for assembly positioning, can also be used as a connector to transfer power and torque, meanwhile it is widely used as a protection to cut the connection when the safety device overload. Precision stainless steel pins usually use 303 stainless steel, 316 stainless steel, 18-8 stainless steel, and so on. The following uses 18-8 stainless steel pins as an example.
There are many types of pin, 18-8 taper pin, 18-8 internal thread taper pin, 18-8 cylindrical pin, 18-8 internal thread cylindrical pin, 18-8 tail taper pin, 18-8 cylindrical pin, 18-8 hole pin, 18-8 rotail-tail pin, 18-8 cotter pin and 18-8 safety pin, its basic form is cylindrical pin and taper pin, In the work according to the type of pin and work requirements to choose different pin structure, the use of different types of pin use effect is different.
18-8 cylindrical pin is a cylindrical positioning pin. Its main advantage is that it has good force and is used to fix the relative position between parts. It plays a very important auxiliary role in combined processing and assembly. Cylindrical pin requires high tolerance precision, otherwise the pin is easy to fall out if the fit is not good. 18-8 Elastic cylindrical pin is elastic, loaded into the pin hole and hole wall pressure, not easy to loose, the pin hole precision requirements are low, interchangeability holes can be disassembled and assembled many times, the rigidity is poor, not suitable for high-precision positioning, suitable for impact, vibration occasions, can replace part of the cotter pin, cylindrical pin, pin shaft or taper pin used.
18-8 Conical pin: As the name suggests, conical pin is conical dowel, 18-8 conical pin is actually a round table body: that is, the cone with a plane parallel to the bottom to cut off the top of the cone, get a big one, a small round table body. Mainly used for positioning of different equipment connection, can also be used for fixing parts, power transfer, usually installed in the need for frequent disassembly parts. 18-8 Taper pin with 1:50 taper, has the advantages of easy installation, good self-locking, easy disassembly. 18-8 Internal thread taper pins and spiral tail taper pins are used in holes that are not threaded or are difficult to punch from the pin. The tail end of the tail-cone pin drive hole can be opened to prevent the pin from slipping out of the hole. The pin holes of 18-8 cylindrical pins and various conical pins are generally processed through hinge holes. After multiple loading and unloading, the positioning accuracy and connection fastening rate can be reduced, and only small loads can be transferred. 18-8 Taper pin connection element after a period of time, the joint will be very tight, disassembly is not convenient, in the top drill a hole with internal thread, is for the convenience of disassembly. 18-8 internal thread taper pin installation is more convenient, the function of the inner screw hole is easier to disassemble the taper pin can be installed several times, multiple disassembly on the positioning accuracy is relatively small, by the transverse force can self-lock, but the force is not uniform cylindrical.
The difference between 18-8 cylindrical pin and 18-8 taper pin:
1. the shape is different, one is cylindrical, one is a cone.
2. processing is different. 18-8 cylindrical pins can be premachined, and 18-8 taper pins are usually made.
3. 18-8 cylindrical pin is usually suitable for precise positioning state (first processing), so it is not often disassembled, and 18-8 taper pin is often used for frequent disassembly places.
4. 18-8 cylindrical pin can play the role of shear resistance, the 18-8 taper pin is often used for positioning.
5. Different scope of action. The 18-8 cylindrical pins are mainly used for positioning and can also be used as connection pins and safety pins. The 18-8 taper pins are also used for positioning and can be used as connection pins.
18-8 stainless steel pin Main uses: automobile, motorcycle, mechanical equipment, mold, machinery, aircraft, ships and other products.
18-8 stainless steel pin produced by Qihong Stainless Steel advantages:
1. in the production process of strict control, high precision, good material, product molding after a number of processes test qualified before shipping.
2. strong technical force, free to help you do demand analysis, according to the need to customize various product specifications, can produce a variety of models of products.
3. Successfully served many domestic and international customers, including the world's top 500 enterprises, and won praise from both Chinese and foreign customers.
