A mass block for ultrasonic machining of CNC machine tools

Abstract

A mass block for ultrasonic machining of a CNC machine tool according to the present application, the mass block used for the ultrasonic vibration of the drill bit is set as an openable structure, and the end includes a clamping tail end. When the drill bit needs to clamp the mass block for ultrasonic machining, Clamp the tail end of the clamping device through the mass block clamping device, so that the mass block is in an open state. At this time, the mass block is far away from the horn, which can avoid the influence of the clamped mass block on the drill bit, and completely eliminate the fixed mass block. The impact of the mass block on ultrasonic machining, at the same time, a chute structure that prevents the mass block from rotating is also set on the horn, so that the clamping device can quickly clamp the mass block.

Description

technical field [0001] The invention relates to the technical field of numerical control machining, in particular to a quality block for ultrasonic machining of a numerical control machine tool. Background technique [0002] Numerical control machining is a mechanical processing method that uses digital information to control the displacement of parts and tools. It has the advantages of high processing efficiency and stable product quality. Therefore, it has always been a hot research topic. At present, in order to adapt to hard and brittle materials such as infrared optical crystals, The precision machining of engineering ceramics, optical glass, quartz, and silicon crystals is now commonly used to apply ultrasonic machining technology to CNC machine tools to improve the machining accuracy of workpieces. For example, Patent Document 1 discloses a multi-frequency numerical control ultrasonic machining method, auxiliary device and machining drilling machine. Side problem, it...

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Problems solved by technology

For example, Patent Document 1 discloses a multi-frequency numerical control ultrasonic machining method, auxiliary device and machining drilling machine. Side problem, it proposes a processing method that clamps the mass block to vibrate freely to remove the coupled low-frequency and large-amplitude vibration, and releases the clamping device to allow the mass block to vibrate freely after entering the surface of the processed material, but the processing method has the following Defect: a. When the clamping device clamps the mass block, the vibration on the horn 9 will still be transmitted to the clamping device through the mass block, so that the clamping device will also vibrate, and the vibration will react to the horn 9 On the other hand, the vibration will also be transmitted to the workbench 8, which may resonate with the ultrasonic generator or the frame or the support frame, which will eventually affect the processing of the drill bit, introduce too many uncertain factors, and make the ultrasonic generator The vibration becomes uncontrollable, which reduces the processing accuracy; b. The mass block slides back and forth on the horn 9, and when the clamping device clamps the mass block, it receives a large impact force, which affects the service life of the clamping device

[0006] To sum up, in the existing technology, for the processing of hard and brittle materials, although ultrasonic and mass blocks are used comprehensively for multi-frequency numerical control ultrasonic machining, it is also realized that the surface cracking of the workpiece needs to remove the coupled low-frequency and large-amplitude vibrations, but it does not It is not considered that the clamping device for clamping the mass block will also transmit the vibration to the frame, and it will also react to the horn, which may even cause the frame to resonate, affecting the machining accuracy and equipment life. When the clamping device clamps the mass block that vibrates back and forth, it will be subject to a large impact, which will affect the service life of the clamping device. Based on this, the application provides a mass block that is set as an open-close structure. When vibrating, the end of the mass block is clamped by the clamping device to remove it from the horn. When the vibration of the mass block needs to be coupled, the mass block is clamped into the horn again, which can further improve the workpiece processing. quality

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