The gripper cylinder, also called finger cylinder, pneumatic finger, etc., is currently widely used, so what is the working principle of the gripper cylinder? What are the advantages of the gripper cylinder structure? Let's talk about this in detail for my friends. The problem.
Working principle and structural advantages of gripper cylinder：
Pneumatic clamping jaws have the advantages of flat, thin, compact, high-strength clamping pieces, fixed on multiple sides, and magnets inside. The working principle of the clamping jaw cylinder is to use a thin cylinder body to process positioning pin holes on the body to install the jaw pieces and toggle When the piston rod is pushed up or down by compressed air, the claw piece or the toggle rod is opened and closed by the toggle pin at the upper end of the piston rod.
Structural advantages:
1. The body shape is flat, thin and compact, and takes up less space, and a variety of fixing methods are reserved for users to choose devices.
2. There are two clamping methods, which can be selected according to the user's needs, and the fixture is clamped by the device. Working principle of parallel jaw clamp:
The piston drives the moving body outside the cylinder to move synchronously through magnetic force. Its working principle: A set of high-strength magnetic permanent magnet rings are installed on the piston, and the magnetic field lines pass through the thin-walled cylinder barrel to interact with another set of magnetic rings sleeved outside. Because the two sets of magnetic rings have opposite magnetic properties, they have strong attraction. When the piston is pushed by air pressure in the cylinder, it drives the magnetic ring sleeve outside the cylinder to move together under the action of magnetic force. The thrust of the cylinder piston must match the suction of the magnetic ring.
A groove is opened in the axial direction of the cylinder tube of the cylinder, and the piston and Shangzhi move on the upper part of the groove. In order to prevent leakage and dustproof needs, stainless steel sealing tape and dustproof stainless steel tape are used to fix the cylinder heads at both ends at the opening. The piston frame passes through the groove to connect the piston and Shangzhi into one. The piston is connected with Shangzhi to drive the actuator fixed on Shangzhi to realize reciprocating motion.
Working principle and usage method of gripper cylinder:
The working principle of the gripper cylinder: Through the action of two pistons, each piston is connected with a qigong finger by a roller and a hyperbolic to form a special drive unit. To realize qigong, the fingers always move axially to the center, and each finger cannot be moved individually. If the finger moves in the reverse direction, the previously pressurized piston is in the exhaust state, and the other piston is in the pressurized state.
一. The method and precautions for using the gripper cylinder (air gripper)
1 When installing the gripper and accessories, the screw tightening torque should be within the allowable range. When installing accessories on your fingers, do not put any resistance on your fingers.
2 The distance L of the gripping point and the amount of extension H should be within the allowable range specified by the air claw, so as not to bear excessive torque on the fingers and reduce the life.
3 When the air claw clamps the workpiece, considering the size error of the workpiece and the presence of magnetic tape in the magnetic switch, the selected opening and closing stroke should have a certain capacity.
二 . the characteristics of the clamping force of the parallel gripper cylinder: the claw is in surface contact when it is clamped, and there is a gap when it is released. This gap varies according to the structural design. Generally, it is in the range of 4mm-20mm, which is called small opening. The range of the large opening distance is 20mm-100mm. The opening distance of the air gripper jaws is loosened. If a certain clamping distance is moved during clamping, the two must be subtracted, and 1mm-3mm must be reserved.
When selecting the clamping jaw cylinder, different models have different clamping forces.
Through the above content, we have already understood the working principle of the gripper cylinder. It can be seen that the structure of the gripper cylinder has many advantages. When using the gripper cylinder, you also need to pay attention to the correct method of use.
