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27

Installing the Jaw Faces

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Threaded Couplings

A threaded coupling is typically used for attaching the grips to a servohydraulic test
system.

illustrates a threaded coupling. A servohydraulic

attachment kit uses a female clevis socket which threads into the actuator or load cell.
You eliminate any end play by tightening a locknut against the actuator piston rod or
load cell and the grip locknut against the grip adapter.

Figure 6. Threaded Coupling

Installing the Jaw Faces

Equipment

You need a dispenser of Molykite g-N paste.

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Содержание 2716-010

Страница 1: ...5kN 30kN and 50kN Wedge Grips Reference Manual Equipment M10 14052 EN Revision C The difference is measurable...

Страница 2: ...y written permission signed by a duly authorized officer of ITW Trademarks Instron is a registered trademark of Illinois Tool Works Inc ITW Other names logos icons and marks identifying Instron produc...

Страница 3: ...range of applications with which our instruments are used and over which we have no control additional protection devices and operating procedures may be necessary due to specific accident prevention...

Страница 4: ...in grip jaws or fixture components that can result in breakage of these components The high energies involved can cause the broken parts to be projected forcefully some distance from the test area Ins...

Страница 5: ...ar of the jaws of a grip or fixture at all times Keep clear of the hazard area between the grips or fixtures during actuator or crosshead movement Ensure that all actuator or crosshead movements neces...

Страница 6: ...chinery Disconnect equipment from all power supplies before removing any cover which gives access to rotating machinery Do not reconnect any power supply while the covers are removed unless you are sp...

Страница 7: ...may be tested any hazard resulting from the failure of a test specimen assembly or structure is entirely the responsibility of the owner and the user of the equipment Hazard Ensure components of the...

Страница 8: ...Preliminary Pages 8 M10 14052 EN...

Страница 9: ...Specifications 19 Dimensions 19 Grips 21 Jaw Faces 21 Chapter 3 Installation 25 General 25 Load String 25 Installing the Jaw Faces 27 Equipment 27 Checklist 28 Procedure 28 Installing the Spacers and...

Страница 10: ...g a specimen 35 Checklist 35 Procedure 36 Removing a Specimen 37 Checklist 37 Procedure 38 Chapter 5 Maintenance 39 Checklist 39 Troubleshooting 40 Chapter 6 Illustrated Parts 41 Finding a Part 41 Gri...

Страница 11: ...Description 14 General This manual describes the 5 kN wedge action grips two versions of the 30 kN wedge action grips and the 50 kN wedge action grips These are Catalog number 2716 010 5 kN wedge acti...

Страница 12: ...the same The high temperature version 2736 015 is similar except that there are four handles on each grip to facilitate tightening the grips in the confined space of a temperature chamber The 2716 02...

Страница 13: ...on com preload on it A compressive test load eliminates any gripping force and causes the specimen to slip from the grips The open front design of the grips lets you change jaw faces to accommodate fl...

Страница 14: ...Chapter Introduction 14 M10 14052 EN Description Figure 2 Grip Components 2716 015...

Страница 15: ...ses through the control nut to the body cavity A screw attaches a bearing plate to the spindle end An anti rotation pin passes through a vertical slot in the spindle shaft The spindle shank has a hori...

Страница 16: ...etween the open jaw faces When you turn the handles to close the grip on a specimen the screw action of the control nut and body threads move the body away from the test specimen and push the bearing...

Страница 17: ...The gripping force increases during a test as the system applies more tensile force to the specimen Open When you turn the control handles to open the grip the screw action of the control nut and body...

Страница 18: ...Chapter Introduction 18 M10 14052 EN...

Страница 19: ...ons This chapter details the grip specifications and includes a dimensional drawing of the grips The chapter also includes the specifications for flat and vee jaw faces Dimensions 19 Grips 21 Jaw Face...

Страница 20: ...010 5 kN Value mm in 2716 015 2736 015 30 kN Value mm in 2716 020 50 kN Value mm in A Effective length 191 7 50 203 8 00 208 5 8 22 B Body width 144 5 67 144 5 67 160 6 3 C Overall width 178 7 00 220...

Страница 21: ...rip Refer to Table 4 on page 22 for additional information on specimen thicknesses for the 50 kN grips Table 2 Grip Specifications Parameter 2716 010 5 kN 2716 015 2736 015 30 kN 2716 020 50 kN Load C...

Страница 22: ...2 6 0 25 to 0 50 Surfalloy coated emery grit of 100 2703 160 Flat 0 to 6 4 0 to 0 25 Rubber coated emery grit of 100 2703 153 Round 3 2 to 7 8 0 12 to 0 31 Diameter 1mm pitch 25 teeth per in 2703 154...

Страница 23: ...emery grit of 100 2703 158 Flat 6 4 to 12 6 0 25 to 0 50 11 4 to 17 6 0 45 to 0 70 Surfalloy coated emery grit of 100 2703 160 Flat 0 to 6 4 0 to 0 25 5 to 11 4 0 20 to 0 45 Rubber coated emery grit...

Страница 24: ...Chapter Specifications 24 M10 14052 EN...

Страница 25: ...cimen A tight connection between each component is essential for accurate test data Any backlash in the load string components will degrade the integrity of the test results Each grip requires an atta...

Страница 26: ...Chapter Installation 26 M10 14052 EN clevis pin couples the shank and socket together A locknut assures that no end play exists in the grip to load frame connection Figure 5 Clevis Pin Couplings...

Страница 27: ...e 27 illustrates a threaded coupling A servohydraulic attachment kit uses a female clevis socket which threads into the actuator or load cell You eliminate any end play by tightening a locknut against...

Страница 28: ...ting Refer to Installing the Spacers and Side Plates on page 29 for installation instructions To install the jaw faces 1 Coat the back and base of the jaw face with Molykote g N paste Do not remove th...

Страница 29: ...Plates The 2716 020 50 kN wedge grips come with a spacer that enables you to use a greater variety of specimen thicknesses The grips can be used either with the spacer for thinner specimens or withou...

Страница 30: ...faces or specimen in the grips Procedure Warning Hazard Do not perform any testing if either the spacers or side plates are not in place The spacers or side plates secure the jaw faces and prevent the...

Страница 31: ...he side plates 1 If necessary remove the spacers Using a 2 5 mm hex wrench loosen and remove the two M4 x 8 screws and then remove the spacer 2 Orient the side plate so that the two screw holes on the...

Страница 32: ...egrity of the test results You must preload the load string attachment kits to eliminate backlash To preload the load string you must install a specimen capable of withstanding a tensile load 10 to 15...

Страница 33: ...oad The electronic load limits are set to protect the weakest load string component Procedure 1 Install a specimen according to section Installing a specimen on page 35 2 Set the control electronics f...

Страница 34: ...and ensure that the appropriate spacers or side plates are installed Refer to Installing the Spacers and Side Plates on page 29 for additional information The Load channel indicates a zero load The e...

Страница 35: ...est Caution Do not exceed 35 kN 55 kN for the 50 kN grips or the maximum load rating of any load string component Exceeding the maximum load rating of a component will damage it Caution Do not load th...

Страница 36: ...the thumbscrew and adjust the L shaped arm so it centers the specimen Warning Hazard Keep your fingers clear of the area between the jaw faces Caution Align the specimen correctly to prevent equipmen...

Страница 37: ...ot release a specimen from the grips while the specimen is under a load or if the system is in LOAD or STRAIN control Checklist Check for the following conditions before you remove a specimen The test...

Страница 38: ...o the grip label icon until the jaw faces no longer engage the specimen Caution Secure fragile specimens by some means before you open the lower grip 2 Turn the lower grip control nut according to the...

Страница 39: ...cles of opening and closing the jaw faces Clean the grip body and control mechanism with a soft lightly oiled cloth Lubricate the back of the jaw faces with a thin film of Molykote g N paste Inspect t...

Страница 40: ...ant on jaw faces Lubricate the back of the jaw faces Specimen breaks at jaw face Initial gripping force is too great for specimen Do not over tighten control nut Misalignment of a load string componen...

Страница 41: ...difference between this version and the 2736 015 High Temperature version is that there are four handles on the high temperature version The 2716 015 30 kN wedge grip is visually similar to both the...

Страница 42: ...er Illustrated Parts 42 M10 14052 EN Ancillary Parts The Ancillary Parts list contains additional items for installing and maintaining the grips There is a description and Instron part number for each...

Страница 43: ...43 Parts Lists Product Support www instron com Parts Lists Figure 11 Illustrated Parts...

Страница 44: ...1 1 6 Pin 10 x 35 54 53 1054 1 7 Check Nut T2 309 1 8 Handle T566 7 2 9 Bearing Washer T566 3 1 10 Pin 6 x 14 54 53 1053 1 11 Pin 1 4 x 1 in 54 5 11 4 12 Pin 5 32 x 1 in 26 6 2 4 13 Spring Extension 6...

Страница 45: ...T566 21 1 6 Pin 10 x 35 705J206 1 7 Check Nut T2 309 1 8 Handle T566 16 2 9 Bearing Washer T566 17 1 10 Pin 6 x 14 705J149 1 11 Pin 1 4 x 1 in 54 5 11 4 12 Pin 5 32 x 1 in 26 6 2 4 13 Spring Extensio...

Страница 46: ...e T566 52 1 6 Pin 10 x 35 54 53 1056 1 7 Check Nut T2 309 1 8 Handle T566 50 4 9 Bearing Washer T566 53 1 10 Pin 6 x 14 705J149 1 11 Pin 1 4 x 1 in 54 5 11 4 12 Pin 5 32 x 1 in 304C1 4 13 Spring Exten...

Страница 47: ...6 Pin 10 x 35 705J206 1 7 Check Nut T2 309 1 8 Handle T566 16 2 9 Bearing Washer T566 136 1 10 Pin 6 x 14 705J149 1 11 Pin 1 4 x 1 in 54 5 11 4 12 Pin 5 32 x 1 in 54 5 10 4 13 Spring Extension 66 1 1...

Страница 48: ...Chapter Illustrated Parts 48 M10 14052 EN Ancillary Parts Table 10 Ancillary Parts List Description Part No Spanner Wrench 80 4 4 Molykote g N Paste 105 1 28...

Страница 49: ...ism 15 Jaw faces 15 Specimen centering device 15 Control mechanism 15 Couplings Clevis pin type 25 Threaded type 27 D Description Grips 14 Load string 25 Dimensions 19 F Faces 15 Faces specifications...

Страница 50: ...Preloading the load string 32 Purpose of grips 12 R Removing a specimen 37 Removing load string preload 33 S Side plates 50 kN grips Installation 29 Spacers 50 kN grips Installation 29 Specifications...

Страница 51: ......

Страница 52: ...Product Support www instron com...

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