Questions tagged [manufacturing-engineering]

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56 views

Shade tree engineer needs help calculating hoop stress

I have an extruded aluminum tube. I'm trying to come up with an Excel calculator that will help me find out how much force would be exerted on the internal walls if the tube was filled with rubber, ...
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1answer
66 views

What are some examples of laser-based additive manufacturing techniques?

I'm trying to research additive (or 'bottom-up') fabrication techniques that rely on lasers or other advanced photonic systems. So far, the most prevalent technique I've come across is two-photon ...
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1answer
68 views

Cheapest way to produce 200-1000 pieces of 0.2 mm copper plates

I want to build a strong electro magnet. I came to the conclusion that the smartest arrangement would be something like hundreds of thin sheets of 0.2 mm copper with PTFE isolation. This reduces ...
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1answer
348 views

press fit ball joint

I enjoy creating mechanical designs but I am not a trained mechanical engineer. I have a technical issue with a joint design that needs to be permanently retained using a press (snap) fit. Any idea ...
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1answer
648 views

Arc welder? Cheap welding device for chainmail/chainmail jewelry

I'm hoping this is the correct StackExchange for this question/request for advice. I'm looking to buy a welder to introduce me a little to welding, my main use-case right now is the hobby projects I ...
2
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1answer
60 views

Best way to manufacture stainless steel apparatus?

Shown in the images below I have designed a small stainless steel apparatus with accompanying hollow metal cylinders ontop. I'm looking into larger quantity production and simply CNC'ing these would ...
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2answers
177 views

Should I use shaft or hole basis on a constant diameter shaft with both clearance and interference fits?

I'm looking to manufacture some steel pins and plates, with a view to large scale production in the future. One of the pins of the design has a constant diameter. This pin passes through holes in two ...
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1answer
105 views

Validation protocols [closed]

Question from a validation beginner in the pharmaceutical industry. What are the common approaches to start writing validation protocols (esp. IQ, OQ, PQ)? What are the common approaches to start ...
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2answers
116 views

Coating brass components cheaply

I have seen a number of products made of brass with a silver-looking coating covering the brass on the outside. These products are all quite cheap (for example a small watering can or clothes hooks). ...
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0answers
169 views

What are the raw materials for water filter housing production? [closed]

I want produce water filter housing (like below images) who can tell me what are need raw material for these? Best Regards
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0answers
58 views

Measuring Helix Angle

What is the best way to measure the helix angle of a helical cut gear? I have a sun gear from a planetary set that I would like to have custom made but I'm not sure the best way to get the helix angle,...
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3answers
64 views

Small scale manufacturing [closed]

Some background: I am working for an ed-tech startup and we are hoping to release our first product soon but have been hitting a lot of hurdles with our current manufacturing strategy. We want to ...
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2answers
87 views

What is the manufacturing method used to make aluminium C channel

I don't know how this is made and I don't know the name of the method to search for it to learn more.
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3answers
456 views

How to find out what a material is made of specifically?

Let's say I buy a barbecue grill, is there a material testing kit that I can buy that'll allow me to find out what metal the grill is made from and if it were galvanized or cured in a particular ...
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1answer
76 views

What is the characterising difference between a riser and a runner?

The image given below shows a bolster with a series of riser and runner. What I really do not understand is which is the riser and which is the runner. Also a detailed explanation to why multiple ...
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1answer
62 views

Why laser cutting speed suddenly decrease when cutting sheets from 1 to 3mm thickness then stabilize?

Please to understand what I mean, see the picture below : I don't understand why it is not a linear curve (or almost), because at first sight it should be no ? If you need 10 sec to cut a length of ...
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2answers
58 views

Can wet welding be done in mineral oil?

I'm interested in knowing whether or not submerged welding can be done in fluids other than water, specifically mineral oil in this case. The reason I want to know is that I'm looking into designing ...
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2answers
24 views

Are these “parts pickers”? “JLF” and “Little Joey”

I'm reading company training materials and I don't understand a few terms. I'm hoping that some of you might be able to decode. The company receives product and delivers it to work sites. I believe ...
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2answers
40 views

Transfer of low density solids

Which sort of equipment is specifically designed for flowing/pumping low density solids (powders) e.g. for loading from a drum to a receiver?
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1answer
345 views

How to mechanically attach a compression spring to a flat surface

I am working on a new project right now and I was wondering if anyone had any ideas on how to keep a spring fixed and connected to this flat plastic piece [image shown below]. Our goal is to keep the ...
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2answers
28 views

Cylinder's surface condition of gas springs (gas struts)

I've discussed part of these question somewhere else, but realized I have to be more specific about it. I'm new to this site and hope I'm doing the right thing. I'm planning to manufacture gas struts ...
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2answers
719 views

What are the advantages of different types of groove in welding?

In welding, we have different types of grooves like V-shaped groove, U-shaped groove, Double V, Double U, J and Double J. What is the advantage of each kind over the other?
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2answers
1k views

Part to “increase” the diameter of a small shaft, what is is called?

In my lab we have dressing tools for sharpening grinding wheels. The tools are diamonds mounted on a steel shank and the shank fits into a custom holder with a set screw in our machine (pictured). ...
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2answers
112 views

grey cast iron from freezing point to room temperature (cooling process)

Do grey cast iron expand from freezing point to room temperature (cooling process)?
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1answer
36 views

Is it possible to spot weld three rather than two plates?

I have a situation where ideally, I would like to resistance spot weld three rather than the usual two plates together (individual plate thickness approximately 0.7mm). Is this at all possible? If not,...
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3answers
102 views

Is there a cheap way to get gears

Is there generally any cheaper way to get a bunch of gear wheels. I've been to some local companies who specialize in gear production and the price is always somewhere in the range 100-150 USD for a ...
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2answers
52 views

MANUFACTURING PROCESS: ROLLING PROCESS

In the rolling process, Why should the velocity of the strip at the entry before coming in contact with roller be lesser than the velocity of the roller?
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1answer
222 views

How can I couple two small parallel shafts offset a short distance from each other?

I have two parallel shafts, 3 millimetres in diameter and offset by 8 millimetres, both anchored in surrounding housing by ball bearings. When one shaft is rotated (via gear), I want the other shaft ...
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2answers
201 views

Pneumatic Can Crusher (Number of holes allowed for crushing plate)

Hi I'm designing a pneumatic can crusher for my course, and came across a problem. How many allowable holes would be ideal to relieve pressure on the crushing plate of the device? Are there ways to ...
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1answer
327 views

Artificial Intelligence in manufacturing machines

I am a researcher on robotics and AI, and wonder if traditional manufacturing machines, such as lathe, CNC, or grind use any kind of machine learning technique or algorithm. This algos are widely used ...
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4answers
2k views

Designing electronic enclosures for manufacturing

I am trying to design a simple plastic electronic enclosure for a PCB and I wanted to learn how to get the enclosure as ready as possible for manufacturing. I basically wanted to understand the ...
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1answer
28 views

How Gas Springs or Gas Struts are pressurized with nitrogen gas and then sealed?

Prior to testing and probably painting, the last stage of manufacturing a gas spring or gas strut is pressurizing with Nitrogen. I was wondering how this step is done. I think it is filled with gas ...
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1answer
44 views

Is there a way to avoid reheating of steel billets in Reheat furnace and directly go from casting to roll milling?

Iron ore and few compounds added will result in steel which are casted to steel billers form. this billet is again reheated to melting point of 1200c and then sent to roughing mill for desired shape. ...
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1answer
29 views

Bolt circle indication on angled ellipse

Ok so I am a machinist, not an engineer, but figured someone here might be able to provide some insight into my situation. The part is 2.75" diameter and is on a 3.3* angle in the X axis on my mill. ...
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2answers
51 views

Best way to dent a pipe from the inside?

I am currently trying to redesign a pipe with 2 dents from the inside. What is the best way to manufacture something like this, also how would i go about describing this process in a drawing? In the ...
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2answers
21 views

Over torquing two different materials

What happens when you over torque a joint comprising of two different materials ? Will the corresponding material wear make the joint leak proof ?
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1answer
232 views

Two intersecting prisms

Case 1 The development of Case 1 of this problem in which the axes of the prisms intersect at right angles, is shown in Diagram 1. Note that inter-edge lines are required for the development of both ...
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1answer
61 views

How did scientists develop the stencils that made even more precise processors than they had previously?

The history of computers seems somewhat pervasive since there are so many steps in modern manufacturing and so many changes in trends with transistors over many years. Grasping how we got to our ...
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1answer
49 views

Document Feathering Tolerance on Drawing

I am recreating an engineering drawing package from old quotes for a large assembly. In the quote they say "All length edges not to exceed 1/32" deep feathering". For some context this is for a bunch ...
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2answers
147 views

How to design a casting machine?

I was wondering, what are the factors to consider or how to find the required technical specifications for the new machine? For example, if we consider a design of horizontal centrifugal casting ...
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1answer
2k views

How to make an annular metal to metal snapfit?

I am designing a watch case and would like to know how to make an annular snap fit for the backplate. The material used is stainless steel. I could find references for Metal-plastic snap fit but I ...
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2answers
53 views

Is there any method to recycle air-pollution into fertilizer?

Vehicles and Factories produce air-pollution like Nitrogen Dioxide(NO2) and Sulfur Dioxide(SO2). Plants use Fertilizer with those same compounds (NO2 & SO2) So, by what method can air-pollution ...
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1answer
35 views

How to avoid oxidation of Si using a sub nanometer layer

Which material can be used to protect a Si layer from Oxidation by a sub nanometer layer?
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2answers
167 views

Operation of Fruit Blender-Mixer

I was wondering how blenders used in the kitchen for the purpose of creating smoothies, soups, etc. operate, particularly, how the rotation of their blade is achieved, i.e. what sort of motor is used ...
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2answers
1k views

Shaft Spline Information

I have a shaft with splines on it that I want to create a drawing for in Solidworks because I may need to have this specific spline replicated on a part in the future. Does anyone have any ...
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1answer
50 views

What manufacturing process is suited for production of the elastomer strip?

What manufacturing process should be adopted to manufacture a LEGO® compatible strip made by material which is rubber like?
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1answer
1k views

Hand-pressed metal stamping - fishing spinner blades [closed]

I want to stamp my own fishing spinner blades. They look like this: http://lurepartsonline.com/Online-Store/Colorado-Blades/Premium-Finish-Colorado-Blades.html Specs are usually 1mm thick, 3x2" ...
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0answers
23 views

Narrowing down injection moulding material selection

How do I narrow down specific values when selecting a plastic for injection moulding? My part is uniform in wall thickness and thins out where a hinge a present. Properties: Will not go under many ...
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0answers
15 views

Is it possible to have a reference pulse interpolator for a CNC machine with dc drive?

Is it possible to have a reference pulse interpolator for a CNC machine with a dc drive? it should work with alternating current drive but I am not sure about the direct current drive. please help me ...
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0answers
34 views

Manufacturing with glass panels [closed]

I would like to design a 3.2-inch LCD display onto a product. The best aesthetic I have seen is using a flush glass screen front face. My product does not use touch screen. How would I go about ...