Single-cylinder double-piston two-point floating clamping device
A floating clamping, double-piston technology, used in clamping devices, positioning devices, clamping and other directions, can solve the problems of large shock and vibration, large inertia, and increased friction.
Inactive Publication Date: 2015-01-07
CHONGQING GANGQIAN MACHINERY
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Problems solved by technology
However, in this structure, the entire oil cylinder is moving, the inertia is large, and there is radial pressure between the oil cylinder and the piston, which increases friction and makes the entire structure impact and vibrate greatly.
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Embodiment Construction
[0010] Such as figure 1 As shown, the single-cylinder double-piston two-point floating clamping device of the present invention has a power device of a cylinder 1, and the cylinder barrel of the cylinder 1 is fixed. There is a gas joint in the middle of the cylinder 1, and the gas joint is connected to the air pump through the reversing valve 2. connect. There are two pistons in cylinder 1, namely left piston 3 and right piston 4. A vertical left through hole 31 is provided on the left piston rod of the left piston 3, and a left toggle mechanism is inserted in the left through hole 31. This left toggle mechanism comprises a left connecting rod 32 whose upper end is hinged and fixed, the lower end of the left connecting rod 32 is hinged with the left pressing rod 33, and a The left roller 34, the left roller 34 is located in the left through hole 31, and can roll up and down in the left through hole 31. A left pressure head 35 is also hinged at the lower end of the left pres...
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The invention relates to a single-cylinder double-piston two-point floating clamping device and belongs to a mechanical processing clamp. Compressed air conveyed from an air pump enters a middle portion between two pistons of an air cylinder through an air connector and pushes a left piston to move leftwards and a right piston to move rightwards. A piston rod drives an idler wheel in a through hole to exert clamping force on workpieces through a toggle mechanism formed by a connection rod and a pressure bar. The single-cylinder double-piston two-point floating clamping device is driven pneumatically instead of hydraulically so that energy is saved and pollution caused by pressure oil leakage is avoided. In addition, due to the structural design, the single-cylinder double-piston two-point floating clamping device obtains large clamping force through a mechanical reinforcement device, friction between the air cylinder and the pistons is avoided, power loss is reduced, and meanwhile vibration is reduced.
Description
technical field [0001] The invention relates to a machining fixture, in particular to a single-cylinder double-piston two-point floating clamping device. Background technique [0002] When it is necessary to clamp two workpieces or two positions of a workpiece at the same time, people usually use a floating clamping mechanism, among which the single-point hinged swing cylinder is more widely used. But in this structure, the whole oil cylinder is moving, the inertia is large, and there is radial pressure between the oil cylinder and the piston, which increases the friction and makes the whole structure have greater impact and vibration. Pneumatic clamps consume less energy than hydraulic clamps during clamping, saving energy, and will not cause pollution due to pressure oil leakage. Since the pressure that the pneumatic clamp can provide is not very large, in the case of a large clamping force, a series of mechanical booster devices can be used to obtain a large clamping for...
Claims
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IPC IPC(8): B23Q3/08
CPCB23Q3/00B23Q2703/04
Inventor 唐仁伟
Owner CHONGQING GANGQIAN MACHINERY