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Ultrasonic electric spindle

An ultrasonic and electro-spindle technology, applied in the direction of large fixed members, metal processing machinery parts, metal processing equipment, etc., can solve the problems of impact, poor cutting performance, failure to develop a spindle system, etc.

Pending Publication Date: 2017-08-29
HANGZHOU JINGRUI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This milling and drilling method has the following problems in the actual processing process: the honeycomb structure is a paper flexible material with a porous and thin-walled structure, which determines that the processing method must be processed by high-speed cutting, and the spindle speed must exceed 20,000 rpm. Minutes, otherwise it will not be able to cut, so the requirements for the machine tool are very high; due to the special structure of the Nomex honeycomb core material, its cutting performance is poor, and it is prone to tearing, collapse, core lattice deformation, burrs, and shape defects during processing and other defects, the tool is easy to wear during the processing, so the product quality is not high, and the cost of the tool is relatively high; the dust generated by the Nomex honeycomb core during the processing will cause great harm to the human body, and the CNC machining machine is a high-precision equipment , dust will affect its parts; under the traditional milling and drilling process, the dust-free high-precision machining of curved surface shape is still a technical problem in this field
However, this technology is still in a relatively early stage of application in China. Only a few aircraft manufacturing companies (such as Chengfei, Hafei) have invested heavily in the introduction of Austrian GFM complete aircraft for actual production and application, but so far have not developed a suitable Compared with the spindle system of the traditional CNC machine bed and bed motion control system, a lot of financial and material resources are wasted

Method used

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  • Ultrasonic electric spindle
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] like figure 1 Shown is the schematic diagram of the structure of the ultrasonic electric spindle, including the shaft body 1 and the ultrasonic transducer assembly 2, and the end of the shaft body 1 is provided with a storage cavity 11 for accommodating the ultrasonic transducer assembly 2, the ultrasonic transducer assembly A shaft sleeve 3 is provided on the 2 outer sleeves and is detachably and fixedly connected with the shaft sleeve 3. A bearing 4 and a motor 5 for controlling the rotation of the shaft sleeve 3 are arranged between the shaft sleeve 3 and the storage chamber 11. The motor 5 drives the shaft sleeve 3 to rotate. , so as to drive the ultrasonic transducer assembly 2 detachably and fixedly connected to it to rotate, and the end of the sub-rod 22 of the ultrasonic transducer assembly 2 is fixed with a cutter 6, which further drives the cutter 6 to rotate; figure 2 Shown is a schematic diagram of the structure of the ultrasonic transducer assembly 2, the ...

Embodiment 2

[0024] This embodiment is based on Embodiment 1, the shaft sleeve 3 is extended in the axial direction to form a hollow cylinder 31, and the end of the cylinder 31 is closed with a cover plate 32 (see figure 1 and Figure 4 ), on the one hand, this design can further realize energy gathering, prevent ultrasonic energy from spreading, and increase the vibration frequency of the cutter 6; The through hole 321 on the cover plate 32 (see Figure 4 ) to achieve wiring, and the space layout is more reasonable.

Embodiment 3

[0026] In this embodiment, on the basis of Embodiment 1, a cover 8 is added at the end of the shaft sleeve 3, and an ultrasonic outlet 81 is opened on the cover 8, and a mercury conductive slip ring is added between the shaft sleeve 3 and the cover 8 9 (see Figure 4), the wire 7 at the ultrasonic source interface 23 passes through the mercury conductive slip ring 9 and then goes out from the ultrasonic outlet 81. The mercury conductive slip ring 9 can prevent the wire 7 from winding when the servo motor 5 is working, and at the same time play a role in transmitting current In the actual production process, non-hollow motors can also use carbon brushes to conduct electricity, but the signal loss is large, and the signal is intermittent. Finally, silver-containing carbon brushes are used, which is slightly better than ordinary carbon brushes, but there are still signal interruptions. Continuing the phenomenon, this technical solution uses a hollow servo motor, and the wire dire...

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PUM

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Abstract

The invention discloses an ultrasonic electric spindle. According to the technical scheme, the ultrasonic electric spindle is characterized by comprising a spindle body and an ultrasonic transducer assembly; the end part of the spindle body is provided with a containing cavity used for assembling the ultrasonic transducer assembly, the ultrasonic transducer assembly is sleeved with a spindle sleeve, a gap is reserved between the ultrasonic transducer assembly and the spindle sleeve, and a motor is arranged between the spindle sleeve and the containing cavity; and the ultrasonic transducer assembly is composed of a transducer and a variable-amplitude rod, an ultrasonic source connector is arranged at the tail end of the transducer, the variable-amplitude rod comprises a circular truncated cone part connected with the transducer, the end with the smaller diameter of the circular truncated cone part is integrally connected with a cylindrical part, the diameter of the cylindrical part is the same as the end with the smaller diameter of the circular truncated cone part, a cutter is fixed at the shaft end of the cylindrical part, and the circular truncated cone part is fixed to the spindle sleeve through a connecting flange which extends outwards. The ultrasonic electric spindle is suitable for a traditional five-axis linkage machining center, and the large-allowance cutting process of the honeycomb material and the dust-free high-precision high-efficiency machining of the curved contour can be realized at an ultralow rotating speed.

Description

technical field [0001] The invention relates to the field of ultrasonic cutting, more specifically, it relates to an ultrasonic electric spindle. Background technique [0002] With the development of the aviation industry and the need to improve aircraft performance, more and more composite materials are used in the structural design of military and civilian aircraft, especially the third-generation and new-generation fighters. Especially in the empennage, ventral fins, canards, inner and outer elevons and other key power components related to handling performance, many high-quality and advanced paper-based Nomex honeycomb core materials are used. High strength than rigidity, self-extinguishing performance, insulation performance, good chemical performance and so on. Due to the excellent properties of the Nomex honeycomb core material, some companies at home and abroad have also used the honeycomb core structure in some important components. [0003] However, due to the sp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23B19/02B06B1/02B06B3/02
CPCB06B1/02B06B3/02B23Q1/70
Inventor 萧文通冯晓宇
Owner HANGZHOU JINGRUI TECH CO LTD