Tool-changeable oil mist gas-floating ultrasonic finishing device for computerized numerical control

Abstract

The invention discloses a tool-changeable oil mist gas-floating ultrasonic finishing device for computerized numerical control. The lower part of a tool handle is provided with an outer sleeve (4) andan inner sleeve (5); an elastic telescopic mechanism is arranged between the outer sleeve (4) and the inner sleeve (5) of the tool handle; the upper end of an amplitude-change pole (8) is provided with a gas floating elastomer constructed by an oil mist gas-floating device; an ultrasonic transducer (3) is arranged in the inner sleeve (4), a tool ball (9) is connected at the lower end of the amplitude-change pole (8), and an energy transfer receiver (11) is arranged on the outer sleeve (4); the energy transfer receiver (11) receives an ultrasonic frequency oscillation signal emitted by an emitter (12) by a wireless way. The finishing tool vibrates at high frequency along with motion of a main shaft, and the workpiece surface is subjected to finishing processing. The finishing device has the advantages of being convenient to install, good in finishing effect, high in precision, suitable for high-speed finishing and low in impact on the main shaft of the computerized numerical control.

Description

technical field [0001] The invention belongs to the technical field of special mechanical processing, and relates to a tool changeable oil mist and air floating ultrasonic finishing device for a machining center. Background technique [0002] Machining center (abbreviated as CNC in English and its full name is Computerized Numerical Control) is a multifunctional high-performance automatic CNC machine tool developed from CNC milling machine. The biggest difference between machining center and CNC milling machine is that the machining center has an independent tool. The library can realize the function of automatically changing the processing tools, which is also a major advantage of the machining center. By installing different types of processing tools for different purposes on the tool library, the machining on the spindle can be changed through the automatic tool changer in one clamping. However, no matter what kind of metal processing tool is used for processing, there wi...

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Problems solved by technology

[0002] Machining center (abbreviated as CNC in English and its full name is Computerized Numerical Control) is a multifunctional high-performance automatic CNC machine tool developed from CNC milling machine. The biggest difference between machining center and CNC milling machine is that the machining center has an independent tool. The library can realize the function of automatically changing the processing tools, which is also a major advantage of the machining center. By installing different types of processing tools for different purposes on the tool library, the machining on the spindle can be changed through the automatic tool changer in one clamping. However, no matter what kind of metal processing tool is used for processing, there will always be tiny uneven knife marks on the surface of the part, and there will be staggered peaks and valleys;

[0003] Finishing is a mechanical non-cutting plastic processing method that uses the principle of mechanical extrusion to obtain a mirror-like metal surface; the calendering knife is used as a surface finishing tool for parts, and the calendering tool exerts a certain pressure on the surface of the workpiece. The metal on the surface of the workpiece produces plastic flow and fills into the original remaining low concave troughs, thereby reducing the surface roughness of the workpiece; however, the finishing tool has a short service life, is easily damaged, and has a high comprehensive use cost

At the same time, because calendering will produce a hardened layer on the surface of the workpiece, this layer and the internal material will have obvious delamination phenomenon, which will easily cause the surface layer to fall off; and because the calendering knife has too much rigidity, generally 1000N-3000N, so the transmission mechanism of the machine tool The guide rail is greatly damaged, which seriously damages the accuracy and life of the machine tool

[0004] With the development of ultrasonic technology, ultrasonic technology has been applied more and more in the mechanical processing of machine tool industry; adding ultrasonic vibration to the cutting tool of the machining center can realize the compound processing of hard, brittle and difficult-to-machine materials such as ceramics and glass. There are many applications, but adding ultrasonic waves to the machining center for finishing processing has few practical applications due to the many technical problems involved.

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