Knife collision prevention device used on knife rest of numerical control machine tool

Abstract

The invention provides a knife collision prevention device used on a knife rest of a numerical control machine tool, and relates to the technical field of numerical control machine tools. The knife collision prevention device comprises a machine tool body, a sliding plate, the knife rest and a clamping assembly, an equipment box is fixedly installed at the top of the machine tool body, an operation panel is fixedly installed on the front face of the equipment box, a moving cavity is formed in the machine tool body, a sliding rod is fixedly installed in the moving cavity, the sliding plate is arranged in the moving cavity, an equipment block is fixedly installed at the top of the sliding plate, the knife rest is fixedly connected to the top of the equipment block, and the clamping assembly is arranged between the sliding rod and the sliding plate and used for clamping and fixing the sliding plate. According to the device, through cooperative use of a threaded lead screw, a gear, a moving block and a travel switch, movement of a knife can be stopped before knife collision, and through cooperative use of electric push rods, a lifting plate and a knife groove, the height of the knife can be adjusted.

Description

technical field [0001] The invention relates to the technical field of numerical control machine tools, in particular to an anti-collision tool device used on a tool holder of a numerical control machine tool. Background technique [0002] Numerical control machine tool is the abbreviation of digital control machine tool, which is an automatic machine tool equipped with a program control system, which can logically process programs with control codes or other symbolic instructions, and decode them, using coded numbers It means that the numerical control device is input through the information carrier, and various control signals are sent by the numerical control device after calculation and processing to control the movement of the machine tool, and the parts are automatically processed according to the shape and size required by the drawing. [0003] However, during the operation of the CNC machine tool, when the staff programmed the cutting path of the tool, they did not c...

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Problems solved by technology

[0003] However, during the operation of the CNC machine tool, when the staff programmed the cutting path of the tool, they did not consider the distance between the tool and the workpiece fixture, so that the programmed cutting path of the tool was greater than the distance between the tool and the workpiece fixture. When the tool is running, it is easy to hit the workpiece fixture, causing the tool to touch the knife, break the knife or even cause damage to the fixture, or when the staff programs the cutting path of the tool, the position set by the starting point of the tool and the workpiece fixture or The position of the workpiece material is too close, so that the tool directly collides with the workpiece fixture or the workpiece material. Tool collision accidents often lead to damage to the tool and a reduction in the accuracy of the machine tool. In severe cases, it may endanger the safety of the operator. Therefore, an anti-collision device is needed To protect machine tools and tools

[0004] Generally, the anti-collision device for machine tool tools usually limits the moving distance of the tool through the internal system of the machine tool itself. Once the tool exceeds the moving distance, the system will stop the machine tool and issue an alarm, but this method depends on the system of the machine tool itself. , if an abnormal error occurs in the system of the machine tool itself, the movement distance of the machine tool cannot be limited and alarmed, and it is easy to cause the machine tool to continue to operate after the tool hits the tool, which will further damage the machine tool.

[0005] However, the existing machine tools generally fix the tool at one position, and the height of the tool cannot be adjusted. When using tools with different thicknesses or heights, a specific tool set is required to clamp the tool so that the tip of the tool can be It is very troublesome to install the tool on the tool holder on the same horizontal line as the rotation center of the workpiece material

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