Process for strengthening assembly hole through cold extrusion of slotted bushing
A technology of slotted bushing and assembling holes, which is applied in the field of hole cold extrusion strengthening precision machining, can solve the problem of large reaming amount, uneven surface residual stress field of hole wall of workpiece with holes, and increase the cost of hole cold extrusion strengthening technology And other issues
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0029] figure 1 It is a process flow diagram of strengthening the assembly hole by cold extrusion of the slotted bush; figure 2 It is a schematic diagram of a strengthened state of a slotted bush cold extruded strengthened assembly hole of the present invention.
[0030] (1) The slotted bush 4 passes through one end of the extruded mandrel 5 and places it on the guide section 6, and is fixed to the fixture through the thread 8 at the tail. Extrusion mandrel 5 and slit bushing 4 pass through auxiliary plate 3 and workpiece 2 with holes. The auxiliary plate 3 is placed in front of the workpiece 2 with holes, and the holes of the auxiliary plate and the assembly holes of the workpiece with holes have the same diameter and are coaxial.
[0031] (2) When the extruding mandrel 5 is pulled out of the assembly hole of the workpiece 2 with holes at a constant speed, the working ring 1 of the extruding mandrel squeezes the slotted bushing 4, and a plurality of slits are opened on the...
Embodiment 2
[0036] Using the ABAQUS finite element simulation analysis software, the assembly hole of the TC4 titanium alloy plate with a diameter of 60 mm × 60 mm × 10 mm and a central hole diameter of 12.12 mm is used to cool the hole with a extrusion amount of 5% using a single-slit bushing and a 4-slit bushing. Simulation of extrusion strengthening process.
[0037] After the assembly hole of the titanium alloy workpiece with holes is cold extruded and strengthened, the wall of the assembly hole produces residual stress in three directions: radial, tangential, and along the thickness of the plate. The residual stress in the three directions of the hole wall has the greatest influence on the performance of the workpiece with holes is the tangential residual stress. Therefore, in Example 2, only the changes of the distance from the hole wall and the tangential residual stress at different positions of the assembled hole wall of the titanium alloy workpiece with holes after the hole cold...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com