I'm currently trying to reverse engineering an 3d scanned based screw model. The profile section cut are pretty straightfoward to model but I have no idea how to model the transaction between two diferent cross-sections with different pitches in an smoth way.
Someone have ever experience to...
I recently was moved on to a project which demands to reverse engineering an tank in order to fabricate another equal ones. Until now I had only worked with automation machines so I’m quite inexperience with tank fabrication so I have some question about it.
The tank main body has 700 mm...
As the title says, I'm trying to evalute the amount of power needed in roller chain conveyor. I know there is engineering manuals regarding this calculation although it mostly aimed to grain/mining bucket conveyors but in my case it's not an grain it's biscuits and the manner the biscuits are...
I have an application where I need to operate 112 suction cups and I need to know the suitable pipe diameter (All the suction cups are conect to a single main pipe, that’s the pipe I want to calculate) as well as the right size of the vaccum pump according to the time per cycle time I have. I...
Hello,
I'm solving some question about position tolerance from a book and there are two of them which I didn't understand what is wrong with my resolution. Could someone help me with it?
Picture for question 69 and 70:
69. The perpendicularity callout and this tolerance of position callout...
The ASME Y14.5 - 2018 says some words about choosing the appropiated MMB boundary: "7.11.6 The appropriate MMB for determining the size of the true geometric counterpart for an external datum feature(s) of size is the smallest MMB that can contain the datum feature(s) of size while respecting...
Hello!
Today I was presented to the concept of zero tolerancing at MMC on postion tolerance. I quite understood how it works but couldn't understood why it's not so used in industry. For me, it ALWAYS has more benefit than using the MMC plus any tolerance since the virtual condition doesn't...
Hey fellas, is there any reference table or formula to estimate the correct amount of lubrificants on an sprocket gear and on its chain based on conveyor velocity? I need to estimate the amount of lubrificant of an sprocket gear drive which has been used on an conveyor.
Guys, I've started learning GD&T by my own and one of my main questions is what should the machinist do to awnser the GD&T requirements of a part. About this question anyone knows a youtube channel, book or any other source of information about the machinist point of view regarding milling...
Hello folks,
I'm thinking about use a kind of sleeve jaw, similar to the image and which is largely used in mechanical pencil's, to clamp and screw bottle caps just like in this video. Something I would like to know from you guys is if there is another name to this part because I can't find...
I'm planning to design two types of clutch to be used in packaging machines (capping machines to be more precisable. Until now I getting into design a slip clutch and hysteresis clutch. The slip clutch is not a problem for me. I have a good idea about the mechanism and the calculation behind...
Friends, if you were my contractor would you like this drawing? What do you think about this drawing? Is it concise? Is it clean drawing? It's a square tube welded structure and I confess I didn't put any welding symbol because it would have so much dimension, symbols, lines and bla bla bla...
Friends, I have been working during a year as automation machine designer. Until now all machines I've been desinging are bit of simple and there is almost no room for fail although I want to upgrade my skills and to be capable of design machines in level like Krone's machines. Although I am...
Hi folks, I have been working as a draftman in packaging machine industry. I've been studying lots of mechanism to learn a bit about machine design. Sometime ago I met the spline shaft and reading about it I learned that it is suitable for rotational and axial motion although I an question stay...
Folks, I've been surfacing on the internet trying to find any guide line on how to predict how much force is required to seal an device with o ring. The matters is I need to design a pneumatic cylinder to exert the desired amount of force to seal the device but everything I find until now is the...
I'm venturing on learning GD&T alone. When reading about Least Material Boundary I've concluded that least material boundary is equal to the outer boundary for a hole (internal feature)and equals to the inner boundary for a shaft (external boundary). Is that rigth? Could I consider the least...
Friends, does anyone knows a bibliography or references about cinematic and geomtric links in motion transmissions? I mean how to deign a proper crankshaft, crank-rod mechanisms etc.
Folks, I've been taking a Sandvik Coromant course, there they talk about ISO nomeclature used to definy the best insert. There they also talk about this nomenclature applied to ISO-P (Steel) regarding the types of maching processes for example: P01,P10,P30 etc but I can't understand what each...
Hello folks, someone knows a standard used to write a calculation log or a example of one. I need one to base myself to describe all the calculations that I used to design a gear box.
Hello, folks, help a newbie friend who just get the first job in the machinery design area. I just get a job in labelling and filling machine industrie and don't know nothing about it and I wasn't able to find books and articles about it. I know I'll learn a lot with my co-workes but if someone...
