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An automatic adjustment drilling device for testing welding residual stress

A drilling device and residual stress technology, applied in positioning devices, clamping devices, boring/drilling, etc., can solve the problems of heavy workload, low efficiency, multiple fixings, etc., and achieve high efficiency and strong adaptability , the effect of improving work efficiency

Inactive Publication Date: 2018-10-09
CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an automatic adjustment drilling device for testing welding residual stress, so as to solve the technical defects that the drilling device proposed in the above-mentioned background technology needs to be fixed multiple times, the workload is large, and the efficiency is low

Method used

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  • An automatic adjustment drilling device for testing welding residual stress
  • An automatic adjustment drilling device for testing welding residual stress
  • An automatic adjustment drilling device for testing welding residual stress

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0043] First, adjust the angles of the bottom brackets 201 and the electromagnetic chucks 202 according to the position of the test area. After the power is turned on, the electromagnetic chucks 202 generate suction force, attach to the test surface, and lock the bolts (for fixing the bottom brackets 201 and the electromagnetic chucks 202), so that The entire drilling unit adjustment range can cover the test area.

[0044] The sight glass is installed in the sight glass guide sleeve 10, the drilling tool 503 clamps the drill bit 506, and is installed on the drill stand 502, and the positional relationship between the drilling tool 503 and the measuring point can be seen on the computer through the sight glass. The X-direction motor and the Y-direction motor respectively drive the lead screw 9 connected to it to rotate, thereby driving the corresponding auxiliary slider 6 to move along the X and / or Y directions in the corresponding X-guiding rail or Y-guiding rail. The auxiliar...

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Abstract

The invention relates to an automatic adjustment drilling device for testing welding residual stress. An X-direction driving mechanism comprises two auxiliary sliding blocks, and a Y-direction driving mechanism comprises one auxiliary sliding block. A fixing device is used for fixing the whole drilling device in a zone of the welding residual stress to be tested. Two X-direction guide rails are arranged on the fixing device in parallel in the X direction, the X-direction driving mechanism is arranged on the X-direction guide rails, the Y-direction driving mechanism is fixedly connected to the two auxiliary sliding blocks of the X-direction driving mechanism, and a drilling assembly is connected with the auxiliary sliding block of the Y-direction driving mechanism. The X-direction driving mechanism can move in the X direction on the X-direction guide rails, the Y-direction driving mechanism can drive the auxiliary sliding block arranged on the Y-direction driving mechanism to move in the Y direction, and the drilling assembly can move in the Y-Z plane relative to the auxiliary sliding block connected to the drilling assembly. The automatic adjustment drilling device for testing the welding residual stress overcomes the technical defects that an existing drilling device needs to be repeatedly fixed, the workload is large, and efficiency is low.

Description

【Technical field】 [0001] The invention relates to a drilling device, in particular to a self-adjusting drilling device for testing residual stress in welding of hydraulic turbine runners. 【Background technique】 [0002] The turbine runner is usually manufactured by welding the upper crown, the lower ring and the blades. There is a large residual stress inside the welded metal structure. This stress not only has a direct impact on the structural working life of the turbine runner, but also One of the main causes of cracks in the runner blades. Therefore, the welding residual stress test of the turbine runner has important engineering practical significance. [0003] There are many residual stress testing methods, which can usually be divided into mechanical measurement methods and physical measurement methods. The mechanical measurement method usually refers to the partial destruction of the component, the internal stress of the component is released, and the magnitude of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23B41/00B23Q3/154
CPCB23B41/00B23B2215/76B23B2270/483B23Q3/1543B23Q2703/10
Inventor 杨跃超陈柳于纪幸任绍成姜明利李海玲李金伟孙铭君
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES