Models And Types Of Sensorless Cylinders
Publish Time: Author: Site Editor Visit: 13
Models and types of Rodless Cylinder
1. Classification by function
Ultra-small: SMC CJ2 series, minimum cylinder diameter 2.5mm
Needle type: SMC CJP2 series, cylinder diameters are 6, 10, and 15mm
Standard type: 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
Lightweight type: SMC CG1 series
Oval piston type: SMC MU series
Locking type: SMC CL, CN series
End lock type: SMC CB series
Pneumatic slide: 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 clamp type: SMC MK series
2. Classification by size:
Classified by cylinder diameter, usually non-sensing cylinders with a cylinder diameter of less than 10mm are called micro cylinders, non-sensing cylinders with a cylinder diameter of 10~25mm are called small cylinders, non-sensing cylinders with a cylinder diameter of 32~100mm are called medium cylinders, and non-sensing cylinders with a diameter greater than 100mm are called large cylinders.
3. Classification by installation method:
Basic installation type: Installed by threads or through holes on the cylinder body of the non-sensing cylinder
Foot type: Installed by L-shaped flange
Flange type: Installed by flange, divided into rod side flange installation and rodless side flange installation
Earring type: Installed by earring, the non-sensing cylinder can be swung, divided into single earring, double earring and integrated ear.
Trunion type: Installed by ear shaft, the non-sensing cylinder can be swung, divided into rodless side ear shaft, rod side ear shaft and intermediate ear shaft.
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-feeding non-sensing cylinder and non-oil-feeding non-sensing cylinder.
6. Classification by position detection method:
Limit switch, magnetic switch.
7. Classification by drive method:
Single-acting non-sensing cylinder and double-acting non-sensing cylinder.
Due to the different purposes of the use of non-sensing cylinders, the structure of non-sensing cylinders is also diverse, but the most commonly used is the single-rod double-acting non-sensing cylinder. The following takes the single-rod double-acting non-sensing cylinder as an example to explain the basic structure of the non-sensing cylinder.
The inner diameter of the cylinder represents the size of the output force of the non-sensing cylinder. The piston should make a smooth reciprocating slide 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 chrome to reduce friction resistance and wear and prevent rust. In addition to high-carbon steel tubes, high-strength aluminum alloys and brass are used for the cylinder material. Small non-sensing cylinders use stainless steel tubes. For non-sensing cylinders with magnetic switches or non-sensing cylinders used in corrosion-resistant environments, the cylinder should be made of stainless steel, aluminum alloy or brass.
A combined sealing ring is used on the piston of the non-sensing cylinder to achieve bidirectional sealing, and the piston and piston rod are connected by riveting without nuts.
The end cover is provided with an inlet and outlet port, and the oil is also provided with a buffer mechanism inside the end cover. The rod side end cover is provided with a sealing ring and a dust ring to prevent air leakage from the piston rod and prevent external dust from mixing into the cylinder. A guide sleeve is provided on the rod side end cover to improve the guiding accuracy of the non-sensing cylinder, bear a small amount of lateral load on the piston rod, reduce the amount of downward bending when the piston rod is extended, and extend the service life of the non-sensing cylinder. The guide sleeve usually uses sintered oil-containing alloy and forward copper casting. The end cover used to be made of forgeable cast iron, but now aluminum alloy die-casting is often used to reduce weight and prevent rust, and micro cylinders use brass materials.
The piston is a pressure-bearing part in the non-sensing cylinder. In order to prevent the left and right chambers of the piston from leaking gas to each other, a piston sealing ring is provided. The wear-resistant ring on the piston can improve the guiding property of the non-sensing cylinder, reduce the wear of the piston sealing ring, and reduce friction resistance. The wear-resistant ring is made of polyurethane, polytetrafluoroethylene, cloth-inserted synthetic resin and other materials. The width of the piston is determined by the size of the sealing ring and the necessary length of the sliding part. If the sliding part is too short, it is easy to cause early wear and jamming. The piston is usually made of aluminum alloy and cast iron, and the piston of a small cylinder is made of brass.
The piston rod is the most important force-bearing part in the non-sensing cylinder. High carbon steel is usually used, and the surface is hard chrome-plated, or stainless steel is used to prevent corrosion and improve the wear resistance of the seal ring.
The seal of the rotating or reciprocating parts is called a dynamic seal, and the seal of the stationary part is called a static seal.
There are mainly the following methods to connect the cylinder barrel and the end cover:
Integral type: The cylinder barrel and one end cover are made into one piece by forging technology, and the other end cover and the cylinder barrel are fixed by riveting or clamping ring. Used for micro cylinders and small cylinders.
Riveted type: A groove is opened on the end cover, and the two ends of the cylinder barrel are riveted into the groove of the end cover to form a whole. Used for small and medium-sized cylinders.
Threaded connection type: The cylinder barrel and the end cover are provided with connecting threads to connect them together. Used for small and medium-sized cylinders.
Flange type: Flanges are provided on both the cylinder barrel and the end cover, and they are connected together with bolts. It is used for small and medium-sized non-inductive cylinders that save space.
Tie rod type: Four tie rods are used to tighten the end covers and the cylinder barrel together, and there is a sealing ring between the end cover and the cylinder barrel. It is used to form medium and large non-inductive cylinders that are neither too long nor too short.
