m be certain. Series 642 Bend Fixtures Product Information Model 642.001 Model 642.01 Model 642.10 Model 642.
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Contents Technical Support 5 How to Get Technical Support Before You Contact MTS 5 5 If You Contact MTS by Phone 6 Problem Submittal Form in MTS Manuals 7 Preface 9 Before You Begin Conventions 9 10 Documentation Conventions 10 Introduction 13 Series 642 Bend Fixture Functional Description 13 Series 642 Bend Fixture Component Identification Series 642 Bend Fixture Specifications 14 16 Safety Information 23 General Safety Practices: Grips and Fixtures Hazard Placard Placement 23 28 Instal
Contents Series 642 Bend Fixtures Product Information
Technical Support How to Get Technical Support Start with your manuals The manuals supplied by MTS provide most of the information you need to use and maintain your equipment. If your equipment includes MTS software, look for online help and README files that contain additional product information. If you cannot find answers to your technical questions from these sources, you can use the internet, e-mail, telephone, or fax to contact MTS for assistance. Technical support methods MTS web site www.mts.
Know information from prior technical assistance Identify the problem Know relevant computer information Know relevant software information If you have contacted MTS about this problem before, we can recall your file.
If you are calling about an issue that has already been assigned a notification number, please provide that number. You will be assigned a unique notification number about any new issue.
Technical Support Series 642 Bend Fixtures Product Information
Preface Before You Begin Safety first! Before you attempt to use your MTS product or system, read and understand the Safety manual and any other safety information provided with your system. Improper installation, operation, or maintenance of MTS equipment in your test facility can result in hazardous conditions that can cause severe personal injury or death and damage to your equipment and specimen. Again, read and understand the safety information provided with your system before you continue.
Conventions Conventions Documentation Conventions The following paragraphs describe some of the conventions that are used in your MTS manuals. Hazard conventions As necessary, hazard notices may be embedded in this manual. These notices contain safety information that is specific to the task to be performed. Hazard notices immediately precede the step or procedure that may lead to an associated hazard. Read all hazard notices carefully and follow the directions that are given.
Conventions Hypertext links The electronic document has many hypertext links displayed in a blue font. All blue words in the body text, along with all contents entries and index page numbers, are hypertext links. When you click a hypertext link, the application jumps to the corresponding topic.
Conventions 12 Preface Series 642 Bend Fixtures Product Information
Introduction MTS Series 642 Bend Fixtures test the flexural bending properties of specimens. The grips are suited for fracture toughness tests (ASTM E-399), plastics tests (ASTM D-790, flex test), and composites tests (ASTM D-2344, short beam shear). Note Contents This manual covers the Model 642.001, 642.01A, 642.10B, and 642.25 Bend Fixtures, all of which have the same basic components. The illustrations on most of these pages show only the Model 642.
The 642.01, 642.10, and 642.25 can be configured for three-point or four-point loading. Four-point loading uses two roller block assemblies in the upper bedplate and two in the lower bedplate. Three-point loading uses two roller block assemblies in the lower bedplate and a three-point option kit attached to the load cell. Different diameter rollers can be used with the same roller block assemblies. Standard roller diameters are 0.125, 0.250, 0.375, 0.500, 0.750, 1.0, 1.25, 1.5, 1.75, and 2.
Force Transducer Three-Point Option Specimen Lower Fixture Assembly Actuator Three-Point Loading Configuration Series 642 Bend Fixtures Product Information Introduction 15
Roller Support Block Retaining Wire or Elastic Band Roller Roller Retaining Spring Roller Support Block Alignment Mark Adjustment Bolt T-Slot Adjustment Bolt Bedplate Alignment Mark Adjustment Slot Bedplate 642.001 Roller Block Assembly T-Slot 642.
Series 642 Bend Fixture Specifications Dynamic Force Dynamic Force Model Number Dynamic Force* 642.001 .09 kN (200 lbf) 642.01 10 kN (2.2 kip) 642.10 100 kN (22 kip) 642.25 250 kN (55 kip) *. Static and dynamic force rating depends upon the roller diameter. Weight Weight Model Number Weight kg lb 642.001 0.7 1.5 642.01A 5 10 642.10B 22 48 642.
Dimensions Length Height (to edge of roller) Span Span Height (to edge of roller) Length Model 642.001 Bend Fixture Dimensioning Model 642.001 Dimensions (SI - Metric Units) Upper Fixture Roller Diameter Length Height Minimum Span Maximum Span 1 mm 40.6 25.7 0.4 15.4 2 mm 40.6 26.9 0.4 15.4 3 mm 40.6 26.7 13.7 25 4 mm 40.6 27.9 13.7 25 5 mm 40.6 29.1 13.7 25 Model 642.
Model 642.001 Dimensions (SI - Metric Units) Lower Fixture Roller Diameter Length Height Minimum Span Maximum Span 4 mm 75.2 27.9 13.7 59.7 5 mm 75.2 29.1 13.7 59.7 Length Height Span Span Height Length Model 642.01A. 642.10B, and 642.25 Bend Fixture Dimensioning Model 642.01A Dimensions (part 1 of 2) Upper Fixture Roller Diameter Length Height Minimum Span Maximum Span 5 mm 101.6 mm 107.4 mm 23.9 mm 76.2 mm 10 mm 101.6 mm 112.4 mm 23.9 mm 76.2 mm 4.0 in. 4.15 in. 0.
Model 642.01A Dimensions (part 2 of 2) Upper Fixture Roller Diameter Length Height Minimum Span Maximum Span 0.25 in. 4.0 in. 4.28 in. 0.94 in. 3.0 in. 0.5 in. 4.0 in. 4.53 in. 0.94 in. 3.0 in. Model 642.01A Dimensions Lower Fixture Roller Diameter Length Height Minimum Span Maximum Span 5 mm 177.8 mm 107.4 mm 23.9 mm 152.4 mm 10 mm 177.8 mm 112.4 mm 23.9 mm 152.4 mm 0.125 in. 7.0 in. 4.15 in. 0.94 in. 6.0 in. 0.25 in. 7.0 in. 4.28 in. 0.94 in. 6.0 in. 0.5 in. 7.
Model 642.10B Dimensions Lower Fixture Roller Diameter Length Height Minimum Span Maximum Span 5 mm 368.3 mm 157.4 mm 17.6 mm 284.4 mm 10 mm 368.3 mm 162.4 mm 22.6 mm 289.4 mm 15 mm 368.3 mm 167.4 mm 27.6 mm 294.4 mm 20 mm 368.3 mm 172.4 mm 32.6 mm 299.4 mm 25 mm 368.3 mm 177.4 mm 37.6 mm 304.4 mm 0.25 in. 14.5 in. 6.25 in. 0.75 in. 11.25 in. 0.375 in. 14.5 in. 6.375 in. .875 in. 11.375 in. 0.5 in. 14.5 in. 6.5 in. 1.0 in. 11.5 in. 0.750 in. 14.5 in. 6.75 in.
Model 642.25 Dimensions Lower Fixture Roller Diameter Length Height Minimum Span Maximum Span 20 mm 673 mm 300 mm 48 mm 580 mm 30 mm 673 mm 310 mm 58 mm 590 mm 40 mm 673 mm 320 mm 68 mm 600 mm 50 mm 673 mm 330 mm 79 mm 610 mm 0.75 in. 26.5 in. 11.75 in. 1.87 in. 22.75 in. 1.0 in. 26.5 in. 12.0 in. 2.12 in. 23.0 in. 1.25 in. 26.5 in. 12.25 in. 2.37 in. 23.25 in. 1.5 in. 26.5 in. 12.5 in. 2.62 in. 23.5 in. 1.75 in. 26.5 in. 12.75 in. 2.87 in. 23.75 in. 2.0 in.
Safety Information General Safety Practices: Grips and Fixtures Typically, grips and fixtures are part of equipment used in MTS testing systems. This section provides general information about safety issues that pertain to systems that use grips and fixtures.
of the hazards that apply to your system at all times. Use these safety guidelines to help learn and identify hazards so that you can establish appropriate training and operating procedures and acquire appropriate safety equipment (such as gloves, goggles, and hearing protection).
Locate and read hazard placards/labels Find, read, and follow the hazard placard instructions located on the equipment. These placards are placed strategically on the equipment to call attention to areas such as known crush points, electrical voltage, and high pressure hazards. Know facility safe procedures Most facilities have internal procedures and rules regarding safe practices within the facility. Be aware of these safe practices and incorporate them into your daily operation of the system.
Remove flammable fluids Remove flammable fluids from their containers or from components before you install the container or component. If desired, you can replace the flammable fluid with a non-flammable fluid to maintain the proper proportion of weight and balance. Check bolt ratings and torques To ensure a reliable product, fasteners (such as bolts and tie rods) used in MTSmanufactured systems are torqued to specific requirements.
appropriate measures and equipment required to handle and use the chemical safely. Ensure that the chemical is disposed of appropriately. Know system interlocks Interlock devices should always be used and properly adjusted. Interlock devices are designed to minimize the chance of accidental damage to the test specimen or the equipment. Test all interlock devices for proper operation immediately before a test.
Know the causes of unexpected actuator motions The high force and velocity capabilities of MTS actuators can be destructive and dangerous (especially if actuator motion is unexpected). The most likely causes of unexpected actuator response are operator error and equipment failure due to damage or abuse (such as broken, cut, or crushed cables and hoses; shorted wires; overstressed feedback devices; and damaged components within the servocontrol loop).
Installation This section discusses the installation of the 642 Bend Fixtures. Two procedures are provided for installing the bend fixtures: Contents • One for servohydraulic applications • One for electromechanical applications Install Bend Fixtures—Servohydraulic Systems 29 Install Model 642.001 Bend Fixtures—Electromechanical Systems 35 Install Model 642.01, 642.10, and 642.25 Bend Fixtures— Electromechanical Systems 36 WARNING The larger capacity grips are heavy.
Force Transducer Upper Bedplate Mounting Screw Lower Bedplate Mounting Screw Actuator 1. Position the crosshead and actuator. A. Switch on electrical power at your test controller. B. Apply high hydraulic pressure to the load unit. C. Position the crosshead and actuator for easy bend fixture installation. D. Make sure that the crosshead is locked. E. Turn off hydraulic pressure. 2. Prepare the mounting hardware.
Clean and Lubricate A. Inspect the actuator and force transducer threads. Clean and then lightly lubricate them with Molykote G-n paste. B. Do the same with the mounting screws. 3. Install the fixture.
A. For Model 642.001, 642.01, and 642.10 Bend Fixtures, attach the upper half of the bend fixture to the force transducer with the shorter mounting screw. For 642.25 attach the adapter plate to the force transducer first, and then attach the fixture to the adapter plate with the provided screws. Force Transducer Adapter Plate 642.25 Fixture B. Align the fixture with the load unit, and tighten the cap screw(s). C. For Model 642.01 and 642.
D. Rotate the actuator to align the fixture’s lower and upper halves. For an anti-rotate actuator, continue on through the next three steps. Loosen E. Unscrew the four cap screws that attach the anti-rotate plate to the bottom of the piston. The anti-rotate plate is at the bottom of the actuator, inside the base of the load unit. Alig Rotate F. Using a spanner wrench, turn the actuator to align the fixture’s lower half with its upper half.
Tighten G. Tighten the four anti-rotate cap screws to a torque listed in the table below. The actuator force rating is stamped on an identification plate at the rear of the load unit. Anti-Rotate Cap Screw Torque 34 Installation Actuator Force Rating Torque Rating 25 kN (5.5 kip) 3.7 N·m (2.
Install Model 642.001 Bend Fixtures—Electromechanical Systems 1. Turn the electromechanical toggle switch to the on position. Position the crosshead as necessary to allow adequate room to install the bend fixtures. 2. Clean the mating parts on the bend fixtures and the load unit. 3. Insert the socket head cap screw through the grip and hand-tighten into the pin adapter. 4. Insert the pin adapter into the clevis (force transducer attachment fixture, lower mounting fixture, and so forth).
Install Model 642.01, 642.10, and 642.25 Bend Fixtures—Electromechanical Systems 1. Turn the electromechanical toggle switch to the on position. Position the crosshead as necessary to allow adequate room to install the bend fixtures. 2. Clean the mating parts on the bend fixtures and the load unit. 3. Insert the adapter into the load unit component (force transducer, attachment fixture, lower mounting fixture, and so forth). Align the holes in the adapter and the load unit component and insert the pin. 4.
Operation Run a Test with Series 642 Bend Fixtures Running tests with the 642 Bend Fixtures involves the following: • Positioning the bend fixture halves for specimen installation. • Adjusting roller block assembly spacing (if needed). • Installing and centering the specimen on the roller block assemblies. • Removing the old specimen when the test is done. 1. Position the bend fixture halves. A. Make sure that the crosshead is locked. B. Switch on electrical power at your test controller. C.
Loosen Slide Slide Loosen Model 642.001 Roller Block Assembly Model 642.01A Roller Block Assembly Loosen Slide Slide Loosen Model 642.10B Roller Block Assembly Model 642.25 Roller Block Assembly The Model 642.001, 642.01, and the 642.10 use a T-slot nut and bolt to attach the roller block assemblies to the bedplate. The 642.25 uses a clamping bar with a cap screw. B. Loosen—but don’t fully unscrew—the T-slot bolts, or the cap screws, on the roller block assemblies you are going to reposition. C.
WARNING Your hands are in a crush zone when you install the specimen Your fingers and hands could get crushed. Make sure you have locked the crosshead and have removed hydraulic pressure from the load unit. Center C. Squarely center the specimen on the lower roller block assemblies. D. Apply high hydraulic pressure to the load unit. E. Move the actuator so that the rollers on the upper assemblies just touch the specimen. F. Check that the specimen remains centered. G.
K. Return to Step D. 4. Remove the old specimen. A. Retract the actuator to open up the bend fixture for easy specimen removal. B. Remove hydraulic pressure from the load unit. WARNING Your hands are in a crush zone when you remove the specimen Your fingers and hands could get crushed. Make sure you have locked the crosshead and have removed hydraulic pressure from the load unit. C. 40 Operation Remove the specimen.
Change Rollers—Model 642.001 Bend Fixtures Note If the bend fixture is not installed in the load unit, skip ahead to Step 5. 1. Make sure the crosshead is locked. 2. Apply high hydraulic pressure to the load unit. 3. Move the actuator so that the bend fixture halves will be far enough apart for easy roller replacement. 4. Remove hydraulic pressure from the load unit. WARNING Your hands are in a crush zone when you replace the rollers Your fingers and hands could get crushed.
Change Rollers—642.01, 642.10, and 642.25 Bend Fixtures Note If the bend fixture is not installed in the load unit, skip ahead to Step 5. 1. Make sure that the crosshead is locked. 2. Apply high hydraulic pressure to the load unit. 3. Move the actuator so that the bend fixture halves will be far enough apart for easy roller replacement. 4. Remove hydraulic pressure from the load unit. WARNING Your hands are in a crush zone when you replace the rollers Your fingers and hands could get crushed.
Install New Roller Tighten (both sides) 642.10B Roller Block Assembly 7. Place the new roller in position. Tighten the retaining screws to hold it in place. 8. For the Model 642.10 and 642.25 Bend Fixtures, the roller stop plate needs to be repositioned to conform with the ASTM testing standard being applied to the test.
Operation Series 642 Bend Fixtures Product Information
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