make up natural cara make up make up tutorial make up korea make up minimalis make up artis make up mata belajar make up make up wardah alat make up makeup forever indonesia makeup artist jakarta tips make up barbie make up natural make up make up wajah make up pesta make up syahrini makeup mata makeup minimalis peralatan make up make up cantik make up mac make up kit jual make up make up sederhana perlengkapan make up gambar make up vidio make up cara makeup minimalis wardah make up make up pac make up glamour cara memakai makeup make up panggung harga make up make up modern make up alami make up dasar pixy make up make up muslimah make up oriflame make up jepang makeover cosmetic make up ultima make up sariayu grosir make up makeup fantasi makeup pesta tas makeup langkah make up make up pria make up malam alat makeup tahapan make up produk make up shading make up mak up make up kebaya make up jilbab make up inez make up simpel contoh make up cara ber makeup makeup wajah tanpa make up make up terbaru toko make up mac makeup indonesia make up soft urutan make up trik make up makeover makeup brand gusnaldi make up paket make up panduan make up jual makeup brush make up bagus alat2 make up make up gusnaldi aplikasi make up alat alat makeup dasar make up inez make up peralatan makeup make up wanita make up berjilbab make up tebal sejarah make up make up maybeline make up branded make up siang tata cara makeup reseller make up make up muslim make up maybelin warna make up tips make up artist rias make up make up mata make up artis belajar make up make up artist kursus make up kuas make up make up forever indonesia jual make up mac indonesia make up make up artist indonesia harga make up forever jual make up online make up pac make up forever jakarta make up oriflame jual make up forever make up online shop indonesia harga make up sekolah make up grosir make up harga make up maybelline jual make up murah make up terbaru mak up mac make up indonesia sofia make up make up kit murah mac makeup indonesia produk make up jual make up kit make up store indonesia make up forever academy jakarta toko make up online jual make up set jual make up mac make up beauty jual make up branded produk make up mac make up forever harga make up mac indonesia produk make up artis jual make up palette produk make up forever make up palette murah before after make up pengantin before after make up sendiri before n after hasil makeup contoh make up karakter contoh riasan pengantin before n after harga make up wisuda harga make up artist harga make up forever make up wisuda rias wisuda di jogja Daftar harga make up forever daftar harga make up mac daftar harga kosmetik make up forever makeup wisuda harga makeup wisuda kursus make up di yogyakarta kursus make up di jogja kursus make up jogja kursus make up yogyakarta kursus kecantikan di yogyakarta kursus kecantikan di jogja kursus make up artist di jogja kursus rias pengantin di jogja kursus rias di yogyakarta kursus tata rias di yogyakarta rias pengantin muslim jogja jasa kreasi jilbab wisuda yogyakarta jasa rias make up wisuda murah bagus bisa dpanggil tempat make uf di jigja yang bagus rias wisuda murah dan berkualitas yogyakarta pakar kreasi jilbab di jogja make uper natural yogya make up wisuda hijab area jogja make up dan kreasi jilbab yang bagus di jogja jasa make up natural untuk wisuda jogja makeup jogja make up jogja makeup yogyakarta make up yogyakarta makeup wisuda jogja make up wisuda jogja make up wisuda yogyakarta makeup wisuda yogyakarta
Search - Content
Search - People/Events
Search - Forums
Search - Newsfeeds



jobcenterbanner

FacebookLinkedinPinterestYoutube
Welcome, Guest
Username: Password: Remember me
If you have a question regarding coaxial, telephone, and building wire, power cable, insulation, extrusion, bunching, stranding, braiding, etc. post it here.

TOPIC: Cabler Back Twist

Cabler Back Twist 2 years 6 months ago #534

I have read several discussions that have related back twist to lay angle for a full planetary unit. My question is: Does the path that the cable takes from the cradle through the machine to the closing die have any effect on back twist.

In our situation we have a full planetary cabler (100%, non-adjustable) the material exits the cradle and over a guide sheave. It then follows a 15 degree path to a second guide sheave then into the lay plate and finally the closing die. I understand that the angle between the layplate and the closing die has an effect on backtwist, but does the angle and time that it takes to get from the cradle to the lay plate have any bearing on back twist.
The administrator has disabled public write access.

Re: Cabler Back Twist 2 years 6 months ago #535

Hello Eric,

It is a little difficult to answer your question without understanding what product you are closing and the exact design of your cabler however:

A planetary cabler in it's many forms is defined as having "back twist" because the back twist normally associated with rigid stranding is absent and therefore removed. There are however frictional forces that tend to twist the sub-components a little bit because these sub-components are rotating relative to the fixed mechanical items that are contributing to those frictional forces. (Eyelets, sheaves, closing dies, etc.)

In your case, I believe you have a classical planetary cabler with the cradles that hold the reels turning in opposite rotation relative to the rotation of the overall carousel which holds those individual cradles.

In my experience, I suggest that you set all your guides and the closing die so that the sub-components close naturally and are not forced to have any abnormal deflections. That should give you the best possible situation. I have also seen some companies place their closing die on freely rotating on bearings to try and eliminate the rotational friction but in my experience, that die will not rotate if indeed the cabler is "strung up" properly as above

The torsional stiffness (rigidity) of the sub-components also comes into play at start up but I assure you that algebraically the back twist is indeed removed.

You can test this for yourself by setting up an experiment using longitudinally striped sub-components and watching what happens to the individual stripes in the closed cable.

Kindest regards,
Peter J. Stewart-Hay
Principal
Stewart-Hay Associates
www.Stewart-Hay.com
The administrator has disabled public write access.

Re: Cabler Back Twist 2 years 6 months ago #536

Peter,
Thanks for the response. This is, as you expected, a classic planetary cabler. One revolution of the machine=one reverse revolution of the cradle. In other words the cradles stay level the throughout the rotation. I am actually planning to run .375 dia stainless tubing with a 10" bend radius. I may need to modify the path that the material takes thru the cabler (change the angle from the cradle to the lay plate) to account for this material and guide sheaves. If I modify this angle will I see any change? For example if I change that angle from 15 degrees to 30 degrees will I introduce enough extra fricitonal forces to affect the material. Or even if I have to make the angle steeper. Again thanks for your help on this.
The administrator has disabled public write access.

Re: Cabler Back Twist 2 years 6 months ago #537

Hello again Eric,

I have cabled 0.375 inch OD copper coax on a classic planetary cabler such as yours many times and it would seem to me that 15 degrees from the exit eyelet or sheave straight down to the closing point is quite a gentle angle and should serve you well.

Don't force the sub-components into a larger angle like 30 degrees as you will introduce other normal forces at the deflection points because of the sharper angle. You might however find that 17.5 or 20 degrees serves you better. (Whatever angle that gives you the straight line right through the die entrance bell to the closing point.)

Kindest regards,
Peter J. Stewart-Hay
Principal
Stewart-Hay Associates
www.Stewart-Hay.com
The administrator has disabled public write access.

Re: Cabler Back Twist 2 years 6 months ago #538

Thanks, we knew that is the way it should work. It helped being able to think it thru w/ someone.

Eric
The administrator has disabled public write access.
Time to create page: 0.290 seconds