TW202042962A - Cutting tool holder with ultrasonic vibration capable of reducing the cutting resistance and wear of a tool and increasing the machining accuracy of the tool - Google Patents

Abstract

A cutting tool holder with ultrasonic vibration is internally provided with an ultrasonic vibration assembly, a rear end block and a prepressing member. The outer ring of the tool holder is equipped with an energy feeding assembly and a tool is installed on a tool handle. The rear end block and the prepressing member fix the ultrasonic vibration assembly in the tool holder. The energy feeding assembly supplies power to the ultrasonic vibration assembly so as to allow the ultrasonic vibration assembly to generate ultrasonic high-frequency oscillation, thereby reducing the cutting resistance and wear of the tool and increasing the machining accuracy of the tool. A magnetic cylinder inside the ultrasonic vibration assembly is made of rare earth giant magnetostrictive material, which provides the tool with a higher output power and higher working temperature to improve efficiency.

Description

Cutting tool holder with ultrasonic vibration

The present invention is a cutting tool holder, especially a cutting tool holder with ultrasonic vibration, which can reduce tool wear and resistance and increase tool accuracy.

The cutting tool holder with ultrasonic vibration is conventionally disclosed. The inside of the tool holder has an oscillating structure. The oscillating structure uses piezoelectric ceramics as a material. The oscillating structure provides electric energy by contacting the slip ring to energize. The friction during high-speed rotation will generate heat and sparks, which will affect the contact current transmission of the oscillating structure, which in turn will affect the stability of power supply and cutting operations. In addition, the oscillating structure using piezoelectric ceramics as a material can withstand only energy density 2500/Jm ³ , lower electromechanical coupling coefficient 0.68K ₃₃ , smaller expansion coefficient (about 400/μm˙m ^-1 ) can provide limited ultrasonic amplitude, lower Curie point (about 300/℃) As a result, the acceptable working temperature is also lower.

Therefore, the inventor has developed a simple and practical alternative device after long-term thinking, prototype testing and continuous improvement based on relevant practical experience.

The present invention discloses a cutting tool holder with ultrasonic vibration. A tool holder is provided with an ultrasonic vibration component, a rear end block and a pre-compression part, an energy feeding component is provided on the outer ring, and one end of the tool holder is provided with a handle; The ultrasonic vibration component has two magnetic field magnets, a magnetic cylinder, a coil holder, an excitation coil, a magnetic upper cover and a magnetic lower cover. The magnetic cylinder is thin Earthen giant magnetostrictive material (Terfenol-D), each of the bias field magnets is respectively arranged at both ends of the magneto-induced cylinder, the coil fixing seat is sleeved on the outer surface of the magneto-induced cylinder, and the excitation coil is arranged around The coil fixing seat is different from one side of the magnetic cylinder, the magnetic upper cover and the magnetic lower cover are correspondingly arranged and sleeved outside the coil fixing seat; the energy feeding component has an inner coil and an outer coil, The inner coil is electrically connected to the exciting coil, the inner coil is looped around the blade holder, the outer coil is arranged outside the inner coil, and there is a gap between the outer coil and the inner coil; the rear end block is arranged on the ultrasonic wave The vibration component is different from one side of the knife handle; and the pre-compression member is hollow, the pre-compression member penetrates the rear end block, and presses and fixes the ultrasonic vibration component to the knife handle.

With the above structure, the present invention uses electromagnetic induction for power supply. The magnetostrictive cylinder uses rare earth giant magnetostrictive materials to carry a large energy density (about 14000/Jm ³ ~ 25000/Jm ³ ), so it can Withstand larger output power, have a larger electromechanical coupling coefficient (about 0.72K ₃₃ ) to improve efficiency, and a larger expansion coefficient (about 1500/μm˙m ^-1 ~2000/μm˙m ^-1 ) can output Larger ultrasonic amplitude, higher Curie temperature (about 387/℃) can withstand higher working temperature, and can be used with the knife handle to make it into a cylindrical shape.

In addition, since the bias field magnets are respectively provided at both ends of the magnetic drum, the magnetic effect can be increased, and the ultrasonic vibration can be strengthened.

10‧‧‧Knife handle

11‧‧‧Knife handle

12‧‧‧Backend block

13‧‧‧Preload

20‧‧‧Ultrasonic vibration components

211‧‧‧Bias magnetic field magnet

212‧‧‧Bias magnetic field magnet

22‧‧‧Magnetic cylinder

23‧‧‧Coil holder

24‧‧‧Exciting coil

25‧‧‧Magnetic upper cover

26‧‧‧Magnetic lower cover

30‧‧‧Energy Feeding Components

31‧‧‧Inner coil

32‧‧‧Outer coil

40‧‧‧Host

Figure 1 is a three-dimensional schematic diagram of the present invention

Figure 2 is a schematic cross-sectional view of the present invention

Figure 3 is a schematic diagram of the vibration of the present invention combined with the host

Referring to Figures 1 and 2, it is disclosed that the present invention is a cutting tool holder with ultrasonic vibration. A tool holder 10 is provided with an ultrasonic vibration assembly 20, a rear end block 12 and a pre-compression member 13 inside. The outer ring of the tool holder 10 An energy feeding component 30 is provided. One end of the knife handle 10 is provided with a knife handle 11, and the knife handle 11 is tapered toward the free end.

Continuing to refer to FIG. 2, the ultrasonic vibration assembly has two magnetic field bias magnets 211, 212, a magnetic cylinder 22, a coil fixing seat 23, an excitation coil 24, a magnetic upper cover 25 and a magnetic lower cover 26; The bias field magnets 211 and 212 are respectively arranged at the upper and lower ends of the magnetic cylinder 22. The bias field magnets 211 and 212 are made of neodymium iron. The coil fixing seat 23 is sleeved on the magnetic cylinder 22. On the outer surface, the excitation coil 24 is arranged around the coil holder 23 on a side different from the magnetostrictive cylinder 22. The magnetostrictive cylinder 22 is made of rare earth giant magnetostrictive material. The magnetic upper cover 25 and the conductive The magnetic lower cover 26 is correspondingly arranged and sleeved on the outside of the coil fixing base 23, so that the exciting coil 24 is confined to the magnetic upper cover 25 and the magnetic lower cover 26 through the coil fixing base 23; the energy feeding component 30 There is an inner coil 31 and an outer coil 32, the inner coil 31 is electrically connected to the excitation coil 24, the outer coil 32 is 1/4 circle size, the inner coil 31 is ringed outside the tool holder 10, the inner coil 31 The outer coil 32 is arranged outside, and there is a gap between the outer coil 32 and the inner coil 31; the rear end block 12 is arranged on a side of the ultrasonic vibration assembly 20 that is different from the tool holder 11; and the preload 13 is hollow, and the pre-compression member 13 penetrates the rear end block 12 and presses and locks the ultrasonic vibration component 20 to the tool handle 11.

Next, referring to FIG. 3 and in conjunction with FIG. 2, the outer coil 32 is electrically connected to a host 40, and the host 40 can control the vibration frequency, voltage and current, thereby providing power to the energy feeding component 30. After the outer coil 32 is energized, the outer coil 32 and the inner wire A magnetic field is generated between the coils 31. The inner coil 31 receives the electric power generated by the induced magnetic field to the exciting coil 24, and then the exciting coil 24 provides power to the ultrasonic vibration assembly 20, so that the handle 10 and the handle 11 can generate ultrasonic high-frequency oscillation. When the tool is installed on the tool holder 11, the cutting resistance and wear of the tool can be reduced, and the machining accuracy of the tool can be increased.

10‧‧‧Knife handle

11‧‧‧Knife handle

12‧‧‧Backend block

13‧‧‧Preload

20‧‧‧Ultrasonic vibration components

211‧‧‧Bias magnetic field magnet

212‧‧‧Bias magnetic field magnet

22‧‧‧Magnetic cylinder

23‧‧‧Coil holder

24‧‧‧Exciting coil

25‧‧‧Magnetic upper cover

26‧‧‧Magnetic lower cover

30‧‧‧Energy Feeding Components

31‧‧‧Inner coil

32‧‧‧Outer coil

Claims (6)

A cutting tool handle with ultrasonic vibration, comprising: a knife handle, an ultrasonic vibration component, a rear end block and a pre-compression part are arranged inside, an energy feeding component is arranged on the outer ring, and one end of the knife handle is provided with a handle; The sonic vibration component has two magnetic field magnets, a magnetic cylinder, a coil holder, an excitation coil, a magnetic upper cover and a magnetic lower cover. The magnetostrictive cylinder is a rare earth giant magnetostrictive material. The bias field magnets are respectively arranged at both ends of the magnetic cylinder, the coil fixing seat is sleeved on the outer surface of the magnetic cylinder, and the excitation coil is arranged on the side of the coil fixing seat different from the magnetic cylinder, The magnetically permeable upper cover and the magnetically permeable lower cover are correspondingly arranged and sleeved outside the coil fixing seat; the energy feeding component has an inner coil and an outer coil, the inner coil is electrically connected to the excitation coil, and the inner coil is looped around The outer coil is provided outside the tool handle, the inner coil is provided with the outer coil, and there is a gap between the outer coil and the inner coil; and the pre-compression member penetrates the rear end block, and presses the ultrasonic vibration component against and fixes it on The handle. The cutting tool holder with ultrasonic vibration as described in item 1 of the scope of patent application, wherein the shape of the outer coil is 1/4 circle size. The cutting tool holder with ultrasonic vibration as described in the first item of the scope of patent application, wherein the rear end block is arranged on a side of the ultrasonic vibration component that is different from the tool holder. The cutting tool holder with ultrasonic vibration as described in item 1 of the scope of patent application, wherein the preloading member is hollow. The cutting tool holder with ultrasonic vibration as described in item 1 of the scope of patent application, wherein the outer coil Electrically connected to a host. The cutting tool holder with ultrasonic vibration as described in item 1 of the scope of patent application, wherein the bias field magnet is neodymium iron.

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