Three-dimensional ultrasonic elliptical vibration cutting device of parallel structure and track generating method

A technology of elliptical vibration and cutting devices, which is applied in the direction of driving devices, fluids using vibrations, large fixed members, etc., and can solve the problems of single elliptical trajectory, low operating frequency, and low natural frequency

Active Publication Date: 2016-11-23
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

[0003] At present, the three-dimensional elliptical vibration device mainly adopts series and parallel structures. The three-dimensional elliptical vibration cutting device with the series mechanism as the carrier can effectively avoid motion coupling, but the series mechanism will cause the first-order natural frequency of the device to be low and difficult to drive.
The three-dimensional elliptical vibration cutting device based on...

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  • Three-dimensional ultrasonic elliptical vibration cutting device of parallel structure and track generating method
  • Three-dimensional ultrasonic elliptical vibration cutting device of parallel structure and track generating method
  • Three-dimensional ultrasonic elliptical vibration cutting device of parallel structure and track generating method

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Embodiment Construction

[0048] The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0049] In order to achieve the above object, the solution of the present invention is:

[0050] A three-dimensional elliptical vibration auxiliary cutting device with a parallel structure, characterized in that:

[0051] The device includes a base 1, a flexible hinge parallel structure 3, and a cutter 4, such as figure 1 shown;

[0052] The above-mentioned flexible hinge parallel structure 3 includes a tool mounting platform 304, and also includes a first branch chain 301, a second branch chain 302, and a third branch chain 303, such as Figure 4 shown;

[0053] the above Figure 4 The three branch chain structures shown are identical, and all include a fixed rod 3011, an input rod 3012, an amplifying rod 3013, and a transmission rod 3014; the cross sections of the fixed rod 3011, the input rod 3012, the amplifying rod 3013, and the tran...

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Abstract

The invention discloses a three-dimensional ultrasonic elliptical vibration cutting device of a parallel structure and a track generating method and belongs to the field of elliptical vibration assisted cutting machining. The device outputs the space three-dimensional ultrasonic elliptical vibration track by using design in a form of a flexible hinge parallel structure. The device comprises a flexible hinge parallel structure, a fixed base, a cutter pre-tightening bolt, pretensioners, piezoelectric ceramics, electrode plates, thread shafts and resonant frequency regulators. The flexible hinge parallel structure comprises tree branch hinges and a cutter mounting table; the tree branch hinges are uniformly distributed at the periphery with intervals of 120 degrees; displacement is simultaneously input into the three branch hinges and finally forms an elliptical track at a cutter point through transmission and amplification actions of the flexible hinge parallel structure. The device is simple in structure and rapid in response, is capable of easily generating the three-dimensional elliptical motion track, and can be conveniently and directly integrated with a numerically-controlled machine tool to carry out auxiliary precision machining.

Description

technical field [0001] The invention belongs to the field of ultrasonic elliptical vibration assisted cutting processing, and in particular relates to a three-dimensional elliptical vibration assisted cutting device with a parallel structure and a method for generating an elliptical trajectory. Background technique [0002] With the rapid development of precision and ultra-precision machining technology, elliptical vibration cutting has been widely concerned because of its advantages of reducing cutting force, improving machining quality, suppressing workpiece burrs, and increasing tool life. In view of the higher and higher requirements for the processing quality of high-precision parts, scholars have designed a variety of elliptical vibration cutting methods and supporting vibration cutting devices to further improve the surface quality of elliptical vibration cutting. Among various elliptical vibration cutting forms, the three-dimensional elliptical vibration cutting devi...

Claims

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Application Information

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IPC IPC(8): B23Q5/02B06B1/06G06F17/50B23B21/00
CPCB06B1/06B23Q1/26B23Q5/02G06F30/17
Inventor 张臣宋云
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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