Models and types of SMC cylinders, basic structure diagram of SMC cylinders

Models and types of SMC cylinders 1. Classification by function: Ultra-small: SMC CJ2 series, minimum bore size 2.5mm Needle type: SMC CJP2 series, three standard bore types: 6, 10, and 15mm: SMC CJ2 series, CM2 series, CA2 series , MB1, MB series, CS2, CS1 series European standard type: SMC C55, C85, C95, CP95 Free installation type: SMC CU, CUJ series Thin type: SMC CQ2, CQS series Light type: SMC CG1 series Elliptical piston type: SMC MU Series locking type: SMC CL, CN series End locking type: SMC CB series Pneumatic sliding table: SMC MX series Sliding device type: SMC CXW series Double type: SMC CXS series Mechanical rodless cylinder: SMC MY1, MY3 series magnetic Rodless cylinder: SMC CY1, CY3 series Thin type with guide rod: SMC MGP, MGQ series Type with guide rod: SMC MGG, MGC series Stop type: SMC RS series Rotary clamping type: SMC MK series 2. Classification by size: According to the classification of cylinder diameter, cylinders with a cylinder diameter of less than 10mm are usually called micro cylinders, cylinders with a cylinder diameter of 10~25mm are called small cylinders, cylinders with a cylinder diameter of 32~100mm are called medium cylinders, and cylinders with a diameter greater than 100mm are called large cylinders. . 3. Classification according to the installation method: Basic installation type: Installation using threads or through holes on the cylinder block. Foot type: Installation through L type is called flange type: Installation through flange, installation with flange on the side of the rod. . Rodless side flange mounting earring type: Installation through the earring can realize the swing of the cylinder, which is divided into single earring, double earring and integrated ear. Trunnion type: Installed through a trunnion, the cylinder can swing. It is divided into rod-less trunnion, rod-side trunnion and intermediate trunnion. 4. Classification by buffering method: no buffer, pad buffer, air buffer and hydraulic buffer (for high speed) 5. Classification by lubrication method: it can be divided into oil-supplied cylinders and non-oil-supplied cylinders. 6. Classification according to position detection method: limit switch, magnetic switch. 7. Classification according to driving mode: single-acting cylinder and double-acting cylinder. SMC cylinder basic structure diagram. Due to the different purposes of use of the cylinder, the structure of the cylinder is also diverse, but the most commonly used is the single-rod double-acting cylinder. The following takes a single-rod double-acting cylinder as an example to illustrate the basic structure of the cylinder. The picture above shows the structural principle diagram of the SMC CM2 series double-acting cylinder. It consists of the cylinder barrel, end cover, piston, piston rod and seals - these are also the five major parts of the cylinder! The inner diameter of the cylinder barrel represents the output force of the cylinder. The piston must reciprocate smoothly in the cylinder, and the surface roughness of the inner surface of the cylinder should reach Ra0.8um. For steel tube cylinders, the inner surface should also be plated with hard chromium to reduce frictional resistance and wear and prevent corrosion. In addition to using high-carbon steel pipes, the cylinder barrel material is also made of high-strength aluminum alloy and brass. Some small cylinders use stainless steel tubes. For cylinders with magnetic switches or cylinders used in corrosion-resistant environments, the cylinder barrel should be made of stainless steel, aluminum alloy or brass. The SMC cylinder piston uses a combined sealing ring to achieve two-way sealing, and the piston and piston rod are connected by riveting without nuts. The end cover is provided with intake and exhaust ports, and the oil type is also equipped with a buffer mechanism in the end cover. The rod side end cover is equipped with a sealing ring and a dust ring to prevent air leakage from the piston rod and external dust from mixing into the cylinder. There is a guide sleeve on the rod side end cover to improve the guiding accuracy of the cylinder, bear a small amount of lateral load on the piston rod, reduce the amount of downward bending of the piston rod when it extends, and extend the service life of the cylinder. Guide sleeves are usually made of sintered oil-containing alloy, forward-inclined copper castings. In the past, malleable iron was commonly used for end caps. Nowadays, in order to reduce weight and prevent rust, aluminum alloy die-casting is often used, and brass materials are sometimes used for micro cylinders. The piston is the pressure-bearing part in the cylinder. In order to prevent the left and right chambers of the piston from channeling air, a piston sealing ring is provided. The wear-resistant ring on the piston can improve the guidance of the cylinder, reduce the wear of the piston seal ring, and reduce friction resistance. The wear-resistant ring length uses materials such as polyurethane, polytetrafluoroethylene, cloth-filled synthetic resin, etc. The width of the piston is determined by the size of the sealing ring and the necessary length of the sliding section. The sliding part is too short, which can easily cause early wear and jamming. The materials of piston are commonly aluminum alloy and cast iron, and the piston of small cylinder is made of brass. The piston rod is the most important force-bearing part in the cylinder. Usually high carbon steel is used, with hard chromium plating on the surface, or stainless steel is used to prevent corrosion and improve the wear resistance of the sealing ring. The part that rotates or reciprocates