Yuav ua li cas tiv thaiv tus qauv slippage thaum lub sij hawm tensile xeem ntawm tuab -walled PE kav?

HauvKev ntsuas tensile ntawm PE (polyethylene) kav, yog tias cov yeeb nkab phab ntsa tuab (piv txwv li, Ntau dua lossis sib npaug li 20 hli los yog tuab dua), slippage lossis clamping puas tuaj yeem tshwm sim tau yooj yim ntawm cov clamps. Qhov no feem ntau yog vim qhov tsis tshua muaj elastic modulus ntawm PE cov khoom, nws du nto, thiab tsis txaus los yog tsis sib npaug clamping quab yuam. Raws li kev sim thiab cov khoom tsim, qhov no feem ntau tuaj yeem hais los ntawm kev xav txog txoj kev clamping, clamp tsim, thiab cov txheej txheem tsim khoom.

I. Cov Ntsiab Lus Tseem Ceeb rau Sample Clamping

1.Maj mam nce Clamping Force
Nws tsis pom zoo kom siv lub siab tshaj plaws clamping quab yuam ib zaug.

Nws raug nquahu kom clamp hauv ob kauj ruam:

* Pib clamping los kho cov qauv;
* Preload (piv txwv li, 50-100N) thiab tom qab ntawd muab lub clamp kom nruj dua. Qhov no tuaj yeem zam:
* Sudden slippage ntawm tus qauv
* Tsis sib npaug zog ntawm lub clamp

2. Xyuas kom meej tias cov qauv zoo sib xws. Rau qhov nruab nrab- cov qauv tuab, qhov tsis zoo yuav ua rau lub sijhawm khoov ntxiv:

Qhov tshwm sim: Tsis txaus clamping quab yuam ntawm ib sab; yooj yim swb.
Kev pom zoo: Siv tus kheej -aligning grips; los yog siv me ntsis preload tom qab installation thiab ces kho.

3. Khaws qhov chaw clamping kom qhuav.

Yog hais tias PE nto muaj roj, coolant, dej, thiab lwm yam, cov coefficient ntawm kev sib txhuam yuav txo qis.
Kev pom zoo: So nrog cawv ua ntej clamping.

Fixture Structure Design Recommendations

Rau tuab-cov qauv PE phab ntsa, cov qauv hauv qab no tau pom zoo:

1. Wedge Grips

Qhov no yog qhov kev daws teeb meem feem ntau siv rau cov tshuab ntsuas universal.

Nta: Ntau dua tensile quab yuam → Ntau dua clamping quab yuam
Tsis siv neeg tiv thaiv - plam
Cov ntsiab lus tseem ceeb tsim:
Lub kaum sab xis: 8℃-12 degree
Nto: Serrated los yog pob zeb diamond -coated nto
Qhov zoo: Kev ua haujlwm zoo tiv thaiv- plam
Tsis siv neeg siab nce

Clamping Surface Design Recommendations (Critical)

2. Serrated Clamping Nto

1.Cov hniav zoo nkauj:

V-zoo li
Rhomboid

Cov lus pom zoo Parameter:

Parameter Pom Zoo Tus Nqi

Hniav qhov tob 0.3–0.6 mm

Hniav Pitch 1-2 mm

Nco tseg:
Tsis sib sib zog nqus heev, txwv tsis pub nws yuav ua rau cov qauv puas.

2. Emery txheej
Muaj ntau yam khoom siv txawv teb chaws siv:
Tungsten carbide particle txheej
Qhov zoo:
High coefficient ntawm kev sib txhuam
Hnav tsis kam

3. Hloov cov clamping blocks

Tswv yim tsim:
Modular clamping blocks

Qhov zoo: Hloov tau tom qab hnav; Adaptable rau cov qauv sib txawv

Fixture Manufacturing Process Recommendations

Fixture cov ntaub ntawv thiab machining kuj tseem ceeb heev.

1. Cov khoom siv kho mob
Cov khoom siv feem ntau:
42CrMo
H13
Cr12MOV
Thaum tshav kub kub kho Hardness:
HRC 50–55

3. Striffness Design
Rau tuab cov qauv tensile kuaj:
Lub fixture yuav tsum muaj nruj txaus; txwv tsis pub:
Lub fixture yuav qhib
Lub zog clamping yuav txo qis
Kev pom zoo:
Fixture thickness Ntau dua los yog sib npaug li 30 hli
Siab -lub zog steel