Protective door opening and closing structure for tool machine

Abstract

The invention relates to a protective door opening and closing structure for a tool machine. In the protective door opening and closing structure, a protective door with a door board is arranged between a tool changing mechanism and a machining main shaft; the door board is connected with a transmission mechanism, so that the door board makes sequentially-collocated opening and closing movable actuation with the tool changing operation of the tool changing mechanism; the transmission mechanism is provided with a first transmission wheel; the first transmission wheel is pivoted with a second transmission wheel, and a flexible piece is wound on the first transmission wheel and the second transmission wheel; a guide movement piece is arranged on the flexible piece; a transmission base is fixedly arranged on the door board; a guide groove is formed on the transmission base, so that the guide movement piece makes reciprocating motion along the guide groove; when the tool changing operation is performed, the first transmission wheel is linked by a cam shaft of the tool changing mechanism to rotate, and the flexible piece is driven to revolve, so that the guide movement piece drives the transmission base and the door board to make reciprocating opening and closing movable actuation along a revolution path of the flexible piece; and by utilizing the linkage transmission of the transmission mechanism, the protective door can be driven to make the opening and closing movable actuation by the cam shaft of the tool changing mechanism to achieve the practical benefit of reducing the assembly cost.

Description

technical field [0001] The invention relates to an opening and closing structure of a protective door of a machine tool by utilizing the connection transmission of the transmission mechanism, which can directly drive the protective door to open and close through the power of the tool changing mechanism, so as to reduce the assembly cost. Background technique [0002] General machine tools are equipped with a tool magazine and a tool changing mechanism, and preset tools can be placed in the tool magazine, and the tool changing arm of the tool changing mechanism rotates between the tool magazine and the machining spindle of the machine tool to buckle and pull out the tool. , Rotary tool change and tool insertion and other tool change operations, and the preset tool is inserted on the processing spindle for processing operations; however, debris and cutting fluid generated during the processing are often splashed on the tool magazine and tool change mechanism, and it is easy to...

AI Technical Summary

Problems solved by technology

[0003] At present, the opening and closing method of the machine tool protection door commonly used in the market is generally that the connection of the protection door can be the driving source of the pressure cylinder for the opening and closing action of pushing the protection door. Control the driving source to move and open the protective door, and then control the power source to start the tool changing mechanism to drive the tool changing arm to perform tool changing operations such as rotating the knife, pulling out the knife, rotating the knife and inserting the knife, and inserting the preset tool on the processing spindle; after the tool change operation is completed, control the driving source to push and close the protective door, and the processing spindle of the machine tool can perform processing operations; however, the opening and closing method of the protective door can achieve blocking debris or The purpose of cutting fluid, but because it is necessary to install the drive source and connected components to move the protective door for opening and closing action, the assembly cost is increased, and in order to make the opening and closing action of the protective door can be combined with the tool change arm of the tool change mechanism For timing matching, it is necessary to control the drive source to move the opening and closing time of the protective door, and such a separate control method will make it difficult to ensure that the actions of the protective door and the tool changer arm match each other, and thus the tool change mechanism cannot perform tool change operations smoothly.

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