DE1920820C3 - Support or clamping device for bending samples - Google Patents

Description

characterized in that each bending block from 3 <> ^on ^ ^η £ " _η ^ _{3Γ £} support or tendon can be tied up ji P on tendons and a pair" * Rhle

characterized in that each bending ^ £ _η ^ _{3Γ £} support or Spg each have a pair of tendons and a pair of "* _a rest position tied up, lon basic bodies (10, 12) in which the elastic ω ei _{bondage of the} support or tensioning tendons (22, 24) held facing each other. The fish> · _mib , _{öcke suc} e _n , mix tert and which are connected to each other with the interposition of the sample gh ^ "^ αιπχη ^^ _{tensioning belt on the zugehofedendernd.} " _N nmndkörper is retained.

5. Clamping device according to claim 4, da- "^^" ^ Xs ^ ersuche can the arrangement so

characterized in that the basic bait (10 "Sffen are that each bending block from one

12) in the plane of the tendons (22, 24) by ■ are hit ^ aJ ^ ^^ _{pn Gru d} . The screws (32) are connected to one another. ^ P- ^ panng ^ ^, s ^ jge ^ njnder

#ilaraS

The invention relates to a support ^ or a g ^^ iaS d £ tensioning members are connected by stretching device for bending samples at Matenalpruf- +5 £ rp «M ^ ^, machines with bending blocks, consisting of each little- ^^" ^^ 'example The invention is next a support or tension member with curved ^^^ "Sugihme on the associated ter surface and a Grundkpiper, in which the standing ^ B g support or tension member is held. Ze « ± tings η _{by a bending block}

In known clamping devices of this type 50 Fig.l ² Jg ^ ^en

the clamping members are cylindrical and "oh the ERFM _d ung ^ ^^ ^ ^^^ be in cylindrical recesses of basic £ ^ ₁ 1 ^ ™

body held so that part of the Zytaderftacte top view, _{front view of the} bending block, protrudes from the base body. Between these ^^ "Sjck has two base bodies 10 and

protruding cylindrical surfaces of the Spannghe- 55 The. ^ geöoc one _{each in the} essential

The sample is held, bs hats.ch shown on,, & J ^ ^nd | ^r ^ _n . _In ^ planar surfaces in this embodiment of the bending Bocke the sample ^ "^ _'eh ä _rtete support strips 18, 20 are not pure, only by the Matenalprufma- f ^{4 un} _n ^d J * ⁵ ^ ^ _{NEN Fläc} hen 14, 16 and the Le. machine-applied bending moments subjected ta ^ _{each other train} ekehrte Spannist, but that at the bending Stenie bucking disturbing residual 60, ^ u nu _SpanngU Eder have langge-

Moments occur that are caused by the 22 24 atK ^^ _{they are due to} the fact that the bending blocks disturb the deformation of the specimen ^ "ΓαβΓ edges facing the specimen snow under the influence of the bending moments, euiandei una _d e _bUd et where these are jigs for tensile or ^ nartg SiO ^ η g _{end, cozy} Krümmungsra compressive stress of samples are known in which 65 cutting Ajero g _{DLE F, äche squeeze m} the clamp members have dius pivoted or off ^"mus ^ _{ssi ß} . ^ ^ g, -

Surfaces 14 and 16 are cylindrically curved, essentially around the support line 26 of the Specimen on the tendon in question. This arrangement makes it possible for you; Tendons one Swivel movement relative to the base bodies 10, 12 in order to adapt to the deformation of the sample adapt under the influence of the applied bending moments. However, this pivoting movement remains the distance between the support line 26 and the flat surfaces 14 and 16 is essentially constant.

The tension members 22 and 24 are held on the associated base bodies by rubber blocks 28, 30. These rubber blocks impede the pivoting movement of the tendons 22, 24 practically not, but tie them to a rest position.

The two base bodies 10 and 12 are in the plane of the tendons 22, 24 by expansion screws 32 resiliently connected to one another.

The lower. The base body 12 is on a frame 34 which is fixed to the machine
Base body 10 is
the lower granui ^. ^ - -
men 34 wears a second in

Ä The frame

easily _{not d}

t ^ ÄSÄi such a bend clamped in a known manner ^ The described ^K ° "^ X ⁸ ₂₂ , 24 and fe- ^{Schwenkbewegung d} " AS _n 32 an adapting stretch of the D ^ehns % ™ * ⁿ " _{nlef de} m Einang to the deformation de ^ robe ^

L machine

and ΠΙ indicated.

For this 1 sheet of drawing egg

Claims (1)

buck, consisting of at least one up- ^^ _isl ^ _de n known ffiÄSÄ Ä - Task draw one and on the opposite side of the sample mn UYD * e ^ ProbJ _applied a cylindrical _can around the Auflagehme the sample M ^All ™ Jpr. . _f . ,. curved on the pad or clamp member 15 ^un § "* ° * _em ä _ß this is achieved in that area to a flat surface of the base body ^El J" f ^ _r de tensioning member is pivotally supported on semer the sample. the support oae, _{narug itself} tapering 2. Support or clamping device according to "fJ ^ VÄ of the side facing away from the specimen claim 1, characterized in that the formed" · £ _{h around the support} ! "" the pivotable support or tension member (22 , 24) »jut one z> Una ^ _{SpanngI d} curved-Rhl flt it f Fläh des immdkorper * Ansp, g £ pivotable support or tension member (22, 24) »but one z> Una ^ _{SpanngI d is} curvilinearly tied to a rest position. fen surface on a flat surface of the immature * 3 support or clamping device according to ten tr lacne _{ü t} Claim 2 ^& characterized in that the ⁵ ^ £ ₆ WdS can be the support or clamping elastic bondage of contact or Spannghe- In this _{w hwenkbewe} supply su: h at emc des (22, 24) by rubber blocks (28, 30) takes place * 5 ^ er dun * * m ^ ^ _{influence of the} ß _iege