Browse Topic: Stamping

Items (238)

Suction Cup Quality Predication by Digital Image Correlation

2023-01-0067

04/11/2023

Vacuum suction cups are used as transforming handles in stamping lines, which are essential in developing automation and mechanization. However, the vacuum suction cup will crack due to fatigue or long-term operation or installation angle, which directly affects production productivity and safety. The better design will help increase the cups' service life. If the location of stress concentration can be predicted, this can prevent the occurrence of cracks in advance and effectively increase the service life. However, the traditional strain measurement technology cannot meet the requirements of tracking large-field stains and precise point tracking simultaneously in the same area, especially for stacking or narrow parts of the suction cups. The application must allow multiple measurements of hidden component strain information in different fields of view, which would add cost. In this study, a unique multi-camera three-dimensional digital image correlation (3D-DIC) system was designed

Guo, Bicheng, Zheng, Xiaowan, Fang, Siyuan, Yang, Lianxiang

INBUILT SANITIZING SPRAYER AT DOOR HANDLE

2022-01-040303/29/2022

It is specially designed for people who have to travel by a cab or a car during COVID 19 pandemic. We can get rid of portable sanitizers inside car. This technology mainly focuses on the benefit of people to sanitize their hands along with their belongings before entering into the car during pandemic. We are planning to implement our products on door handles of the cars. This technology comprises of Press button request switch, Car's Door handle, Controller, Motor Driver, Sensor & Pump. Whenever the request switch is pressed for sanitizing, communication signal will be sent to the controller to enable disinfection mode. The controller then activates the motor driver, which is responsible for Pump operation. The pump then sprays the sanitizing fluid through the nozzle at door handle and the belongings can be sanitized. In parallel, controller enables the sensor into monitoring mode for detecting the disinfection mode and thereby communicating to controller. Motor driver will be turned

Mani, Megala

Ultimate Breakage Load Calculation Method of Cold Gas Inflator Burst Disk

2022-01-093803/29/2022

For cold gas Inflator, high refinement of ultimate load forecast is one key of Inflator development. At beginning, two methods based on implicit algorithm, Zero Curvature method and RIKS method were used for burst disk hydro-burst test ultimate pressure load calculation. After considering the effect of bursting disk stamping process, comparing with results of real test, the refinement of the two methods were above 97% both. Studying the corresponding relations between displacement and stress matrix of the center point of burst disk by RISK method. It was found that under ultimate load, the third principal stress vs. displacement curve of the central node shown extreme point, and load step of the point was corresponding the one of maximum pressure load. This shown that after reaching the ultimate load, the center of the bursting disc lost stability in the direction of thickness. Based on the status of stress matrix analysis results of RIKS method, and for solving the nonlinear contact

Shan, Jinhui, Wang, Cheng

Local Thermomechanical Processing for Improving Formability of High Strength Aluminum Sheets

2022-01-027803/29/2022

Limited room temperature formability hinders the wide-spread use of high strength aluminum alloys in structural body-in-white parts. Stamping or extrusion at warm temperatures or from softer tempers are the current solutions. In this work, our approach is to start with age- and work-hardened sheets from 7xxx, 6xxx, and 5xxx family of alloys and improve their formability using local thermomechanical processing only in the regions demanding highest ductility in the forming processes. The processes used were friction stir processing (FSP) and roller bending-unbending. In both the methods sheets were locally deformed and heated simultaneously without any change in the final sheet geometry or chemistry. Initial results indicated significant deformation in the processed zones with minimal sheet distortion. FSP also resulted in dynamically recrystallized, fine grained (d <5 µm) microstructures in the processed regions with textures significantly different from the base material. This resulted

Nasim, Wahaz, Das, Hrishikesh, Kulkarni, Shank, Rohatgi, Aashish, HERLING, DARRELL, Grant, Glenn, Upadhyay, Piyush, Efe, Mert

02-Environmental Sound Impact in Civil Construction Works

SAE-PP-0017901/29/2021

The first phase of these projects is the deployment, where several activities of civil construction are developed. The activities in general are developed in consolidated urban areas, treating very often modification of an urbane important installation. Thus, in this initial phase are executed activities of demolition, cleaning, preparing the land, foundation and piling, which are considered noisy for people, causing great discomfort to the existing community around the construction site.

Mutagaana, Festo

Bake Hardening Behavior of DP, TBF, and PHS Steels with Ultimate Tensile Strengths Exceeding 1 GPa

2020-01-053604/14/2020

Third generation advanced high strength steels (AHSS) have been developed combining high strength and formability, allowing for lightweighting of vehicle structural components. These AHSS components are exposed to paint baking operations ranging in time and temperature to cure the applied paint. The paint baking treatment, combined with straining induced from part forming, may lead to increased in-service component performance due to a strengthening mechanism known as bake hardening. This study aims to quantify the bake hardening behavior of select AHSS grades. Materials investigated were press hardenable steels (PHS) 1500 and 2000; transformation induced plasticity (TRIP) aided bainitic ferrite (TBF) 1000 and 1200; and dual phase (DP) 1000. The number designations of these grades refer to minimum as-received ultimate tensile strengths in MPa. Paint baking was simulated using industrially relevant times and temperatures from 15 to 60 min and 120 to 200 °C, respectively. Samples were

Blesi, Brandon W., Smith, Charles, Matlock, David K., De Moor, Emmanuel

A New Testing Method to Evaluate Edge Cracking with Considerations of the Shear Clearance and Press Speed

2020-01-075804/14/2020

As the automotive industry increasingly adopts Advanced High Strength Steel (AHSS) for the vehicle light-weighting and crashworthiness, the edge cracking significantly increases in stamping AHSS. Different lab-scale test methods such as the ISO standard hole-expansion test and the half specimen dome test are available to evaluate edge formability. However, none of these lab-scale testing methods emulates production conditions such as various shear clearances, part complexity, and shearing speed associated with the mechanical or hydraulic press operation. To address these limitations of the available testing methods, a new punching and stamping test was developed. This paper introduces the simulation and experimental approach in developing this unique testing method to design the peanut-shaped hole that is sensitive to edge cracking in stamping. Three different sheet materials, DP780, 980 GEN3, and aluminum 6016-T4 were tested to validate the reliability of the newly developed testing

Gu, Jiahui, Zoller, Laura, Kim, Hyunok

Metal Stamping: Converting Parts for Cost Savings

TBMG-3537210/01/2019

In today’s world of medical device manufacturing, cost pressures are very real. At the same time, cost savings can be just as real, especially when companies examine their manufacturing processes for greater efficiencies. One area that is gaining particular attention is metal stamping of previously machined, metal injection-molded, or laser-cut parts.

Installation Procedures - Pin/Plug Expansion Type

AIR3277 (Current)08/15/2019

E-25 General Standards for Aerospace and Propulsion Systems

2018 Create the Future Design Contest: Automotive/Transportation Category Winner

TBMG-3331911/01/2018

Effects of AHSS Sheared Edge Conditions on Crash Energy Absorption in Component Bend Test

2018-01-011304/03/2018

Edge fracture of advanced high strength steels (AHSS) can occur in both the stamping process and the crash event. Fracture due to poor sheared edge conditions in the stamping process was reduced with a recently developed optimal shearing process for AHSS. Currently, the improvement in the energy absorption due to the improved edge condition during crashes performed under different loading conditions had not been closely verified. The purpose of this study is to design and build a miniature component of AHSS and a three-point bending test for investigating the influence of various conditions of the sheared edge on the energy absorption in crashes. AHSS including DP600, TRIP780, DP980 and DP1180 were selected in the study. A small channel component was developed and fabricated using DP980 to simulate key features of the B-pillar. The exposed non-constrained, as-sheared edge was subject to stretch bending forces in three-dimensional space during the three-point bending test. Two bottom

Shih, Hua-Chu, Chen, Guofei

Effect of E-Modulus Variation on Springbackand a Practical Solution

2018-01-063004/03/2018

Springback affects the dimensional accuracy and final shape of stamped parts. Accurate prediction of springback is necessary to design dies that produce the desired part geometry and tolerances. Springback occurs after stamping and ejection of the part because the state of the stresses and strains in the deformed material has changed. To accurately predict springback through finite element analysis, the material model should be well defined for accurate simulation and prediction of stresses and strains after unloading. Despite the development of several advanced material models that comprehensively describe the Bauschinger effect, transient behavior, permanent softening of the blank material, and unloading elastic modulus degradation, the prediction of springback is still not satisfactory for production parts. Dies are often recut several times, after the first tryouts, to compensate for springback and achieve the required part geometry. In this study, the effect of Young’s modulus (E

Fallahiarezoodar, Ali, Goertemiller, Cliff, Katre, Aanandita, Altan, Taylan

THE NAVIGATOR

18AUTP01_0801/01/2018

Cooking up the perfect automated-driving system Ask any group of chefs how to prepare a particular recipe and you'll find general agreement about the list of basic ingredients. However, between that list and the finished product are endless variations of process and proportions. Consider the humble cup of coffee. In its most basic form, it consists of roasted-and-ground beans to which water is added to create a dark brown caffeinated liquid. Then come the various bean origins (Colombian, Hawaiian, Ethiopian, etc.) and the variety of preparation: drip, percolators, espresso, press pots, cold brew and the latest fad, pour overs. The mind-boggling array of fancy coffee drinks on your local café's menu board shows there is clearly no consensus for making a cup of joe.

Abuelsamid, Sam

Spring Assistance (Energy-Swing) in an Electro Mechanical Brake

2017-01-251709/17/2017

On Electro-Mechanical Brakes (EMB) spring-support can be necessary for releasing the brake without electrical energy. Advantageous brake-configurations can make use of the spring over the whole actuation range during engage and release. Such optimized spring support is known as “energy-swing. Under loss-less conditions the spring force could be in permanent equilibrium with the force required to press the pad, i.e. the brake could be controlled without actuation energy. In reality this will not be fully achievable as actuation losses and different operational conditions need to be covered. Still, significant advantages can be gained. The EMB of Vienna Engineering (VE) fulfills a key condition for energy-swing as it facilitates using the spring for engage- and release-support. Car brakes must release automatically when power is off. Consequently, spring-induced engage-support must always be smaller than release-forces and release-support must ensure overcoming mechanical resistance. The

Putz, Michael Herbert, Zipper, Thomas

Modeling and Simulation of Compression Molding Process for Sheet Molding Compound (SMC) of Chopped Carbon Fiber Composites

2017-01-022803/28/2017

Compression molded SMC composed of chopped carbon fiber and resin polymer which balances the mechanical performance and manufacturing cost presents a promising solution for vehicle lightweight strategy. However, the performance of the SMC molded parts highly depends on the compression molding process and local microstructure, which greatly increases the cost for the part level performance testing and elongates the design cycle. ICME (Integrated Computational Material Engineering) approaches are thus necessary tools to reduce the number of experiments required during part design and speed up the deployment of the SMC materials. As the fundamental stage of the ICME workflow, commercial software packages for SMC compression molding exist yet remain not fully validated especially for chopped fiber systems. In the present study, SMC plaques are prepared through compression molding process. The corresponding simulation models are built in Autodesk Moldflow with the same part geometry and

Li, Yang, Xu, Hongyi, Dahl, Jeffrey, Zeng, Danielle, Su, Xuming, Mirdamadi, Mansour, Chen, Zhangxing

Brake Insulator Damping Measurement Procedure

J3001_201604 (Current)

04/20/2016

This procedure is applicable to modes from 500 and 13,000 Hz. The parameters measured with this procedure are defined as the damping factor, ξ for first nine vibration modes of the beam. The measurement will be done in free-free conditions and with temperature.

Brake NVH Standards Committee

An Investigation of Deformation Effects on Phase Transformation in Hot Stamping Processes

2016-01-036104/05/2016

To reduce the fuel consumption as well as to improve the crash safety of vehicles, the usage of hot stamping parts is increasing dramatically in recent years. Aisin Takaoka has produced hot stamping parts since 2001 and has developed various technologies related to Hot Stamping. In an actual hot stamping process, parts with insufficient strength could be produced sometimes at a prototyping phase, even under the proper forming conditions. In order to understand these phenomena, in this paper, phase transformation in a boron steel 22MnB5 under various cooling rates were investigated and the effects of pre-strain conditions on the phase transformations were characterised. Uniaxial tensile specimens were stretched under isothermal conditions to different strain levels of 0-0.3, at strain rates of 0.1-5.0/s and deformation temperatures of 650-800°C. A dilatometer was used to measure the dimensional changes of the specimen to rationalize the phase transformation of the boron steel during

Matsumoto, Takeki, Li, Nan, Shi, Xin, Lin, Jianguo

Surface Generation speeds composites throughput with one-shot stamp-forming process

16MEIP03_2103/01/2016

Surface Generation is working with research group WMG, an academic department of the University of Warwick, and AGC AeroComposites to develop new composite press-forming processes for automotive and aerospace manufacturers. Surface Generation, a U.K.-based provider of advanced carbon-fiber processing technologies, is developing new press-forming mold faces that incorporate its patented PtFS (Production to Functional Specifications) technology for the production of high-performance thermoplastic composite components. By integrating Surface Generation's active thermal management technologies into the mold face itself, WMG and AGC are able to continuously adapt heating and cooling levels for each mold area and process stage in real time. The companies believe that this enhanced capability will improve both the quality and throughput of compression molding applications.

Gehm, Ryan

Surface Generation speeds composites throughput with one-shot stamp-forming process

16AUTP02_0702/01/2016

Gehm, Ryan

Surface Generation speeds composites throughput with one-shot stamp-forming process

16OFHP02_0602/01/2016

Gehm, Ryan

AS2512 Stamping for Arm (Filler Cap)

AS2512-3 (Current)12/04/2015

No scope available.

Engine and Airframe Technical Standards Committee (TSC)

Methods for Determining Plastic Deformation in Sheet Metal Stampings

J863_201504 (Current)04/28/2015

Metals Technical Committee

Test Slabs, Acrylonitrile Butadiene (NBR-H) Medium-High Acrylonitrile, 65 - 75

AMS3217/1B (Historical)09/16/2013

This specification covers a standard acrylonitrile butadiene (NBR-H) rubber stock with medium-high acrylonitrile content in the form of molded test slabs.

AMS CE Elastomers Committee

Synthetic Resin Plastic Sealers, Nondrying Type

J250_201307 (Current)07/09/2013

The material desired under this recommended practice is a synthetic resin plastic sealer of the nondrying, nonbleeding, and noncorrosive type that may be extruded to the specified size and used as a medium for producing a water tight seal between 2 pressed steel sections or between rubber and steel.

Materials, Processes and Parts Council

Die Wear Estimation in Automotive Sheet Metal Stamping

2013-01-117104/08/2013

Automotive industry's migration to usage of HSS (High Strength Steels), AHSS (Advance High Strength Steels) from conventional steels for their low weight and high strength properties has had its significant effects on die wear. The unpredictability of die wear can pose manufacturing issues, for example, undesirable tool life. Hence die wear has been gaining immense attention and lot of research work has been carried out to provide a die wear prediction method. This paper focuses on the method of estimating wear mathematically based on the mechanics behind die wear phenomenon. This is also an effort to study wear on die for an automotive component in critical areas for which the amount of wear are calculated. This study is further to be correlated with production data from die maintenance record, explicit measurement of die wear, etc., to validate the estimation.

Balakrishnan, Praveen Balaj, Dev, Sathya, Bhuyan, Deepak, Syed, Parvez, Thokala, Sarin Babu

Simulation on the Vibration Characteristics of Elliptical Gears

17-227-4-81904/01/2013

Elliptical gear drive is a typical non-circular gear drive, which can be used to transmit a variable-ratio rotation and power simultaneously. To date, elliptical gears are commonly used in automatic machinery, pumps, flow meters and printing presses. However, the vibration characteristics of elliptical gears have not been clarified yet. Due to the non-uniform rotation, the vibration of elliptical gear demonstrates particular characteristics, which should be paid attention to in practical application. This article presents a simulation method on the vibration characteristics of elliptical gears. The torsional vibration simulation model of elliptical gears is established and the simulation program is developed. The particular gear mesh characteristics of elliptical gears are determined and both the inertial effects of the driving and driven sides of elliptical gears are taken into account in the simulation program. By means of the simulation program, two elliptical gear pairs which are a

Liu, Xing, Nagamura, Kazuteru, Ikejo, Kiyotaka

Design and Research of a Novel Type of Mechanical Presses Driven by Three Servo Motors in Parallel

17-227-3-58003/01/2013

A novel type of mechanical presses design driven by three servo motors in parallel is proposed to develop high stamping capacity based on the theory of generalized function sets, and then is improved to enhance its practicability in engineering practice. The inverse and forward kinematics analyses are conducted later. Based on the fuzzy probability theory, the computing method of fuzzy reliability of kinematic accuracy of slider is then obtained. Finally, with a set of optimized length parameters of the presses given, the fuzzy reliability is calculated, on the basis of which a typical deep-drawing process is simulated.

Huang, Xun, Ma, Chunxiang, Wu, Suxing, Wang, Qian, Wang, Zhibo, Gao, Feng

An Experimental Approach for Blankholder Force Determination for DP600 with Different Material Flow Strain Rates in the Flange During Stamping

16-227-3-41703/01/2013

Manufacturing efficiency is directly related to the parameters of the process and the material used. In sheet metal industry, the manufacturing process often results in changes in design of the tool to safely stamp the product. These changes in design could occur due to use of a new material with better formability, adjustments to the design of tools and/or the process parameter variation. In order to avoid the trial-and-error procedure, forming limit curve is an effective method for this assessment and is widely used by several authors in recent publications, that is, the use of forming limit curve could be useful to decrease the trial-and-error procedures and tool-developing expenses. Despite being widely used in the industry, a process parameter that has been barely researched is the influence of blankholder force on the drawability of advanced high-strength steels, which contains multiple phases on microstructural level. The main aim of the present study was to analyze the

Filho, Ravilson Antonio Chemin, Tigrinho, Luiz Mauricio Valente, Neto, Rosalvo C. Barreto, Marcondes, Paulo Victor P.

Unconventional steel wheel designs

12MOMD0928_0310/01/2012

The drawings done by collegiate students for a steel wheel design competition had industry professionals thinking about future production possibilities. “Some of the technical innovations needed to produce the designs really aren't there yet for wheels. But that's not a bad thing,” said Todd Fletcher, the Chairperson of Lawrence Technological University's (LTU's) 2012 Steel Wheel Design Competition, sponsored by the Wheels Task Force of the Steel Market Development Institute (SMDI) and Michelin. The automotive industry professionals who evaluated student submissions in the third annual event judged the concepts on various criteria, including material celebration, changing customer perception by communicating environmental benefits and performance, and creativity through a unique and innovative design that maintains functionality.

Buchholz, Kami

Time Manager Software for a Flight Processor

TBMG-1486710/01/2012

Data analysis is a process of inspecting, cleaning, transforming, and modeling data to highlight useful information and suggest conclusions. Accurate timestamps and a timeline of vehicle events are needed to analyze flight data. When data is gathered onboard a rocket, precise time stamping is even more important due to the rocket’s high speeds and the requirement to integrate data over time for inertial navigation calculations.

High-Accuracy Closed Loop Force Feedback

TBMG-1408607/01/2012

Hand-driven press assemblies, which require a specific amount of force applied for a given amount of time, present challenges when attempting to accurately measure or replicate results in production or quality control processes. In contrast, servo-driven digital presses are able to provide accurate, consistent, and repeatable results while outputting trackable data. By controlling position and current, the servo-driven digital press allows for stable, accurate, and repeatable control.

Test Slabs, Acrylonitrile Butadiene (NBR-L) Low Acrylonitrile, 65 - 75

AMS3217/2C (Historical)04/27/2012

This specification covers a standard acrylonitrile butadiene (NBR-L) rubber stock with low acrylonitrile content in the form of molded test slabs.

AMS CE Elastomers Committee

Advantages of Manufacturing Silicone Drug-Eluting Components via Ultraviolet Light Vulcanization Process

TBMG-1281702/01/2012

Combination products offer several advantages when compared with drug delivery via oral, injection, and infusion methods. All drug-device type combination products exhibit one or more of the following attributes. First, they provide controlled release of the active pharmaceutical ingredients (API) instead of bolus-type delivery; API concentrations can be consistently maintained within an optimal therapeutic range. Second, drug-eluting devices, particularly implanted devices, allow for a targeted delivery of the API. This targeted approach, when contrasted with systemic administration, permits higher therapeutic dosages to be delivered while minimizing adverse side effects. Third, combination products have been shown to improve patient compliance. Most healthcare practitioners now agree that within our aging population, compliance becomes less certain and therefore more important.

Braille Displays Get New Life With Artificial Muscles

TBMG-992805/01/2011

Research with tiny artificial muscles may yield a full-page active Braille system that can refresh automatically and come to life right beneath your fingertips.

Beryllium Bars, Rods, Tubing, and Shapes, Optical Grade

AMS7905C (Current)12/02/2010

This specification covers beryllium in the form of bars, rods, tubing, and machined shapes fabricated from vacuum hot pressed powder.

AMS G Titanium and Refractory Metals Committee

Aluminum Alloy Extrusions, 1.0Mg - 0.60Si - 0.28Cu - 0.20Cr (6061-T5511), Press Heat Treated, Stress Relieved by Stretching, Straightened, and Artificially Aged

AMS4294A (Current)12/02/2010

This specification covers an aluminum alloy in the form of extruded bars and rods.

AMS D Nonferrous Alloys Committee

Dynamic Testing of Electromechanical Actuators Using Time-history Data

2010-01-174811/02/2010

A commercial electromechanical actuator (EMA) is to be dynamically tested with predetermined stroke and load profiles for transient thermal and electric power behavior to validate a numerical model used for aerospace applications. The EMA will follow the stroke profile representative of a real aircraft mission duty cycle. A hydraulic press will exert a corresponding load profile onto the EMA. Specialized hydraulic load control methods must be employed to meet the accuracy requirements. Two of these methods are closed-loop linearization (CLL) and displacement induced disturbance cancellation (DIDC). These methods are implemented along with an external PID compensator, and run in real-time in a series of system identification experiments to observe controller performance.

Rolinski, Nicholas E., Leland, Quinn, Gregory, Earl, Jordan, Brett, Woodburn, David, Wu, Thomas

Fiberboard Crease Bending Test

J119_201005 (Historical)

05/10/2010

This test method is designed to determine the suitability of a painted or unpainted fiberboard for application involving creasing and bending. The specific purpose of the test is to determine whether a given material, properly creased, can be bent along the impressed crease without objectionable failure on the surface of the bend.

Textile and Flexible Plastics Committee