Modularization positioning fixture and positioning fixture assembly

Abstract

The invention discloses a modularization positioning fixture and a positioning fixture assembly. The modularization positioning fixture comprises a pressure head, a first connecting plate, a first clamping air cylinder and a dustproof cover; one end of the pressure head is hinged to the front end of an extending rod of the first clamping air cylinder, and the middle portion of the pressure head is hinged to the first connecting plate; and the periphery of the extending rod of the first clamping air cylinder is surrounded by the dustproof cover. The modularization positioning fixture is simple in structure and small in size; moving parts are effectively protected, and the service life of the fixture is prolonged; the modularization positioning fixture is convenient to install, safe in use and high in efficiency; and standard modules are directly called, the machining period is short, the cost is low, and the opening angle of the fixture is large.

Description

technical field [0001] The invention relates to a fixture, in particular to a modular positioning fixture used in automobile manufacturing. [0002] The present invention also relates to a fixture assembly, in particular to a positioning fixture assembly equipped with the above-mentioned modular positioning fixture. Background technique [0003] figure 1 It is a hinged positioning and clamping mechanism commonly used in body manufacturing technology. Its principle is to use the hinged structure to obtain a larger opening angle of the clamp to achieve clamping and positioning of the workpiece. This mechanism mainly consists of seven parts such as positioning block 2, pressing block 1, pressure head 6, connecting plate 4, hinge 3, support base 9, and clamping cylinder 5. When in use, the cylinder 5 retracts to drive the pressure head 6 and Hinge 3 swings and the clamp opens. However, there are some difficult problems in the use of this fixture: [0004] 1. Cylinder 5 is di...

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Problems solved by technology

[0004] 1. Cylinder 5 is directly exposed to the harsh production environment. After long-term use, it is easy to cause abnormal wear of the sealing ring due to the accumulation of welding slag on the piston rod, resulting in air leakage of the cylinder;

[0005] 2. The piston rod of the cylinder 5 lacks protection. During the production process, the surface of the piston rod is often damaged or even deformed due to the collision of the welding tongs, which shortens the service life of the cylinder;

[0006] 3. Standardization cannot be achieved. Each set of tooling needs to redesign the pressing block, positioning block, hinge, connecting plate and other components, and the processing cycle and design cycle are long

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