1 / 13

Center for Precision Forming (cpforming)

Center for Precision Forming (www.cpforming.org). Taylan Altan , Director (email: altan.1@osu.edu). A short Review July, 2011. Introduction.

pascal
Télécharger la présentation

Center for Precision Forming (cpforming)

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Center for Precision Forming (www.cpforming.org) Taylan Altan, Director (email: altan.1@osu.edu) A short Review July, 2011

  2. Introduction • The Ohio State University(OSU) and have established the Industry/University Cooperative Research Center (I/UCRC) on Precision Forming (CPF) focusing on research needs of metal forming industry. • Funding is provided by National Science Foundation (NSF) and member companies. • CPF (www.cpforming.org) benefits from research conducted at EngineeringResearch Center for Net Shape Manufacturing (ERC/NSM – www.ercnsm.org).

  3. Objectives • Improve existing metal forming processes/products and develop new innovative processes, tooling and equipment. • Conduct projects in close collaboration with industry and transfer the results to the member companies. • Train and educate engineers in the fundamentals and practice of metal forming science and technology.

  4. Current Members • Aida- America Corp. • Boeing • EWI • Honda • ESI North America • General Motors Corp. • Interlaken Technology Corp. • POSCO (Korea) • IM Steel • Scientific Forming Technologies (SFTC) Corp. • IMRA America • Metalsa • JCI • Thixomat • Tyco • Labein • Cincinatti, Inc

  5. Current Projects CPF 1.1: Elevated temperature stamping and hydroforming of Al, Mg and Stainless Steel Objective: Develop guidelines for elevated temperature sheet forming (process optimization, lubricant evaluation and Finite Element Modeling) Warm deep drawing (in cooperation with AIDA Engineering, Ltd.)

  6. Current Projects CPF 1.4: Investigation of springback in forming Advanced/High Strength Steel (A/HSS) Objectives: • Determine the variation of Young’s Modulus with deformation /strain • Predict and reduce springback in stamping A/HSS Planned experiments (Tool concept) 1. Straight flanging 2. Stretch flanging 3. Shrink flanging 4. Straight hat shape drawing and stretching 5. Curved hat shape drawing and stretching

  7. Current Projects CPF- 2.1: Determination of room temperature properties of Al and steel sheet materials under biaxial conditions Objective: Develop a standardized tool design and procedure to determine flow stress, anisotropy and formability under biaxial deformation Sheet bulge test(Viscous Pressure Forming –VPF)

  8. Current Projects CPF- 2.2: Determination of flow stress of Al and Mg sheet materials at elevated temperatures Objective: Determine flow stress of sheet materials at elevated temperatures for the warm forming process. Hole Modified Limiting Dome Height(MLDH) Test Formed sample (OD = 14in, t0 = 0.034in) Inverse Analysis Technique

  9. P rm A T Current Projects CPF- 2.3: Investigation of tribological conditions in forming uncoated and galvanized Advanced/Ultra High Strength Steels (A/UHSS) Objective: Determine the effect of process parameters (interface temperature, pressure and relative sliding speed) on galling / reduce galling Micrograph of galled surface Tool surface Twist compression Test (TCT) Galling (in cooperation with IRMCO) • Testing materials: DP 600 Bare with Lub A • Testing conditions: P = 170 MPa & N= 8.9 RPM

  10. Current Projects CPF - 4.1: Multi Point Control (MPC) die cushion and blank holder technology in stamping Objective: Develop an automated system to optimize the Blank Holder Force for robust stamping Die Blank holder / Binder Individual hydraulic cylinders for each cushion pin Location of cushion pins/ cylinders in the die (Source: Müller Weingarten) (continue) Proposed system for robust stamping using MPC

  11. Current Projects CPF - 4.1: Multi Point Control (MPC) die cushion and blank holder technology in stamping (continue) Parts formed with OSU software by USCAR (try-out reduced from 3 days to 3 hours) Al 6111-t4 (t = 1 mm) BH210 (t = 0.81 mm) DP500 (t = 0.78 mm) Sample parts [GM lift gate inner panel] with different materials and sheet thickness was formed in the same die by simply adjusting the BHF.

  12. Current Projects CPF- 4.2: Applications of Tube Hydroforming (THF) Technologies Objective: Utilize past R&D experience at OSU to assist interested companies in introducing and/or improving the hydroforming technology C. A. B. D. [Leitloff , 1997 ] General concept of Tube Hydroforming Process(Hydroforming of the T-shape part)

  13. Center for Precision Forming (CP-Forming-www.cpforming.org) New tasks under consideration • Cold and Warm Hydroforming of Al and Mg alloys • Simulation of Hot Stamping of Boron Steels • Precision /Flashless Forging of automotive components (for example tie rods, pinion gears and bevel gears) • Prediction and reduction of residual stresses in machining and burnishing (advanced FE analysis) • Micro-stamping for electronic applications (lead frames, CD drive components, etc.)

More Related