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Device and method for ultrasonic impact strengthening of shaft type part welding seams

A shaft parts, ultrasonic impact technology, applied in the field of welding seam strengthening of parts, to achieve the effect of improving fatigue performance, less restrictions, and a wide range of process applications

Active Publication Date: 2015-08-19
WENZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This has high requirements for the connection between the connecting rods. The traditional connection methods are friction welding and gas shielded welding, which only meet the basic requirements for basic use, hardness, stress, torsional strength and other mechanical properties.

Method used

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  • Device and method for ultrasonic impact strengthening of shaft type part welding seams

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Embodiment

[0027] The workpiece is a hollow tube half shaft, which is composed of left and right connecting rods and a hollow tube in the middle. The materials are 55#, 40Cr, and 45# respectively, the shaft radius is Φ20mm, and the total length is 440mm. There are two welds. 6mm. Through the movement of the mobile platform 14 and the telescopic support beam 9, the position of the left hollow shaft rotating platform 4 is controlled to install and locate the half shaft of the hollow tube, which is connected by an elastic coupling. The detachable and movable slider 7 controls the movement of the ultrasonic impact gun 2 so that the impact needle is vertically located above the weld at the left end. The number of needles is 2, the diameter is 3mm, and the hardness is at least higher than HRC55; the specific parameters for selecting the ultrasonic impact gun are: impact The frequency is 15KHz, the output power is 500W, the output amplitude is 100um, the cooling method is air cooling, the volta...

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Abstract

The invention relates to a device and a method for ultrasonic impact strengthening of shaft type part welding seams. An ultrasonic impact gun and a detachable and movable sliding block are arranged together on a chute; the chute provided with the detachable and movable sliding block are fixed on a top layer supporting beam of a supporting frame mechanism; a left hollow shaft rotary platform is positioned with a movable platform by virtue of a second layer left end telescopic supporting beam of the supporting frame mechanism, and the left-right movement of the left hollow shaft rotary platform, the second layer left end telescopic supporting beam and the supporting frame mechanism is realized by virtue of the rotation of a turning handle; a right hollow shaft rotary platform is positioned with a fixed platform by virtue of a second right end fixed supporting beam of the supporting frame mechanism; an AC (alternating-current) servo motor is fixed on the movable platform, and a rotating shaft of the AC servo motor is connected with the left hollow shaft rotary platform by virtue of a spring coupling; the movable platform is arranged on a guide rail which is arranged on a base of the supporting frame mechanism; and a shaft type workpiece is connected with the right hollow shaft rotary platform and the left hollow shaft rotary platform by virtue of the spring coupling. The device and the method provided by the invention are used for performing impact strengthening treatment on shafts with different length sizes and welding seams thereof.

Description

technical field [0001] The present invention relates to a device and method for ultrasonic impact strengthening the weld seam of shaft parts, which is used for various auto parts and their weld seam strengthening, especially the weld seam of parts connected by shafts such as drive shafts and half shafts strengthen. Background technique [0002] The automobile industry is an important force to expand domestic demand and support future economic growth. It has the characteristics of high industrial correlation, obvious scale benefits, and intensive capital and technology. As the foundation of the automobile industry, auto parts are a necessary factor to support the sustainable and healthy development of the automobile industry. In particular, the current independent development and innovation in the auto industry, which is in full swing, requires a strong component system to support it. But at present, the development of parts and components in my country is still lagging beh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D10/00
Inventor 冯爱新薛伟陈风国朱德华曹宇李峰平瞿建武周俭许炎
Owner WENZHOU UNIVERSITY
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