Flexible production line hydraulic clamp and control method thereof

Abstract

The invention relates to a flexible production line hydraulic clamp and a control method thereof. The hydraulic clamp comprises a hydraulic clamp body. The hydraulic clamp body comprises a clamp body,the center of the clamp body is provided with clamp workpiece holders, clamp debris and water discharging ports are formed between the clamp workpiece holders, and the four corners of the surface ofthe clamp body are provided with clamp body oil cylinders. Oil path connectors of the clamp body oil cylinders are connected with an external oil path, the portions, below the clamp body oil cylinders, on the clamp body are provided with clamp gas tightness detection devices, clamp self-cleaning devices are arranged around the clamp body oil cylinders, and a controller controls the interior of thehydraulic clamp body. The flexible production line hydraulic clamp has the advantages that the indirect detection mode of a traditional hydraulic clamp is changed, the gas tightness detection devicesare used for directly detecting the action of the clamp body, and the hydraulic clamp is conveniently applied to a machine tool.

Description

technical field [0001] The invention relates to the technical field of intelligent control of a horizontal machining center and a flexible manufacturing system assembly line machine tool, in particular to a hydraulic fixture of a flexible production line and a control method thereof. Background technique [0002] With the general trend of industrial automation development, various machinery manufacturing enterprises have increasingly higher requirements for the automation and intelligence of machine tools. For example, various semi-automatic and automatic production lines have been widely used in batch machining manufacturing. Among them, the production line that uses rack robots or mobile manipulators for material dispatching and transportation must be equipped with controllable hydraulic clamps to complete the interaction between the machine tool and the transportation system. At the same time, a large number of semi-automatic production lines are also equipped with hydrau...

AI Technical Summary

Problems solved by technology

Due to the limitation of its use method, its corresponding time will increase

[0004] At present, most of the fixtures configured by CNC machine tools are manually clamped, and the workpiece is rarely equipped with hydraulic fixtures with automatic control functions. Even if hydraulic fixtures with automatic control functions are configured, the loosening and clamping action of the fixtures cannot be controlled by PLC. Integration and coordination between fixture body, machine tool and control system

[0005] Traditional hydraulic fixture control only detects the execution hydraulic pressure state of the hydraulic cylinder of the fixture body, or configures a magnetic ring switch to monitor the action position state of the hydraulic cylinder. It is an open-loop control method or a simple closed-loop control method, and there is no real complete clamping with the workpiece. The tight state forms a closed loop, and a magnetic ring switch is configured for detection, which involves the protection of the detection original and the connection of the detection cable, which seriously affects the quick change of the hydraulic fixture, and is not suitable for the use of flexible production lines

[0006] Traditional hydraulic fixtures are not equipped with fixture self-cleaning function. During the intelligent unattended continuous production of the flexible manufacturing system, iron chips will accumulate on the fixture, which will affect the loosening and clamping action of the fixture and the correct clamping of the workpiece by the fixture. Ultimately Affecting the sustainable processing performance and workpiece processing consistency of flexible manufacturing systems

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