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Questions tagged [terminology]

For questions about words, phrases and definitions that are specific to engineering.

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Is the combination of blocks and lines in this old, very long telescope an implementation of some named structure or technique?

Below are two cropped views of "Johannes Hevelius's 8 inch telescope with an open work wood and wire "tube" that had a focal length of 150 feet to limit chromatic aberration." from Harvard University, ...
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What is this captive screw and barrel nut adjustment assembly called? Picture attached

I'm designing a precision adjustment bracket, and I'd like to have a component that allows the field tech to make small adjustments to push and pull on each axis of adjustment. I went looking to see ...
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How can one count the flutes on an end mill with diamond pattern?

This carbon fiber-cutting end mill tool has two intersecting spiral patterns going opposite directions. How can one determine the flute count for calculating feed rate?
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How do I relate Grab Strength and Grab Tear to the real world?

I'm looking at a spec sheet for a high density polyethylene woven fabric and I'm seeing the following parameters on it Tensile Grab Strength: Warp 155 / Weft 170 - tested ASTM D-5034-09 Grab Tear:...
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Looking for translation of “закладная втулка” (threaded bushing?)

Sometimes we need a strong threaded joint in some part that is produced using molding. Say, this part itself is plastic. Then we design the part with a hole and insert there a.. "threaded bushing"? I ...
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Correct terminology for a zero turn stator winding on a BLDC?

I'm designing a BLDC motor with some unique geometry constraints (~250mm long, ~45mm diameter with a ~35mm bore down the center) and am considering using straight copper bars carrying high current ...
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41 views

What is the protective part of a staircase handrail called?

Below the handrail of a staircase is some kind of gridwork to prevent people or objects from falling off the staircase into the space below. What is the term for this gridwork? - perhaps "handrail ...
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3answers
106 views

Meaning of “female eye” in a list of parts

A fellow translator is translating a list of parts into Russian, and can't understand the meaning of "female eye". Here's the table: Maybe someone here could come up with some ideas about the ...
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42 views

What is the entirety of breadth of road called?

As roadway consists of a width of road on which a vehicle is not restricted by any physical barriers or separation to move laterally source, what is a similar term which encompasses the width of the ...
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1answer
33 views

Difference between a Part and a Detail

I'm not sure I'm in the right place for this, if not, Apologies. In my education material under Construction Steel, in its application it lists Masking Details. Under Tool Steel it list an ...
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2answers
86 views

What is the technical name for a water reservoir that retains its contents via vacuum and ambient air pressure?

This is a strange question for me because this is so extremely common, but I have never heard a name to describe exactly what it is. This is commonly used to provide water to animals from a trough or ...
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1answer
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What do I call this shaft that drives the rubber stopper into the glass vial in a vial stoppering machine?

I'm translating a Russian text about a drug product manufacturing process. The text mentions briefly the vial stoppering machine, in which rubber stoppers are first fed into the hopper and then ...
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What type of supports exists for ballscrews or leadscews?

For Linear actuators, a common mechanism is to use ballscrews with ballnuts. The ballscrew is supported at the two sides by a set of bearings which permit the rotation of the screw while keeping the ...
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1answer
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Terminology: Flexible protrusion for a latch

What is the name for a protrusion of material that's built to be flexible in order to act as a latching mechanism? These show up in all kinds of products, but one of the most recognizable is in a snap-...
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3answers
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How do I call this “cogwheel” that feeds tin cans to a specific position?

This is an above view of a system in which tin cans arrive via conveyor (1) to a "feeding star" ("подающая звезда" in Russian; No. 5) and are placed firmly in slot 4. (source in Russian) How does one ...
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Fluid-dynamics question: proper term

I am looking for the term used to describe a situation I've encountered. I'll use a standard hydraulic cartridge that you'd use to keep a door shut as an example, except this one can be locked out ...
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3answers
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Are there standard terms that correspond to the anatomical axes, planes, and directions?

The field of human anatomy seems to have standardized on a number of useful terms to unambiguously describe the human body. For example the three planes and axes as well as various directions seem to ...
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What exactly is the sample period?

I thought the term sample period referred to the time interval between one measurement and another. But I've come across this article which says About every tenth of a second, a dataset, $S(i)$, of ...
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99 views

Two angular velocities on two segments connected by a hinge joint differ only by the joint angle velocity

I was reading this article called "Joint Axis and Position Estimation from Inertial Measurement Data by Exploiting Kinematic Constraints", but I'm not understanding one part, which doesn't let me ...
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1answer
78 views

Translating the name of a type of beam from Russian to English

I am trying to translate the name of a special kind of beam from a set of Russian-language drawings. The dictionary translates the name as simply supported beam, but it's not that simple. There is a ...
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5answers
3k views

What is the opposite of “parallel” in engineering?

The two towers of the Verrazano Bridge are not parallel: they are [???] to account for the curvature of the earth. What is that word?
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1answer
85 views

Name of a keel between the bilge keel and the main keel

I'm working on a seaplane and find myself doubting about the specific nautical term for a keel placed between the bilge keel and the main keel. This might be a bit academic in nature since I have a ...
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644 views

Difference between a “Joint” and a “Kinematic pair”

So far I know the definition of a "Joint": A connection between two links which imposes a constraint on the motion of the links. And on the other hand I know one of them is a special case of the ...
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Difference between Linkage, Kinematic chain, Mechanism, Mechanical element, Mechanical machine and their precise definitions

Recently I started to study about "Design of mechanical machinery". Since I am a person who is very sensitive about words I want to know the difference between these notions and their precise ...
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1answer
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Channel or Canal?

This is about navigable or irrigation water ways. Examples: Navigable channel or navigable canal? (it is about approach water ways to sea ports, or artificial inland water ways). Channel dredging or ...
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What would you call this mining vehicle? (Ural-20R, used in mining)

On the image below is a mining machine produced by the Kopeysk Machine-Building Plant. I'm not sure how to call it in English. The Russian name is "prokhodchesko-ochistnoy kombain". Multitran offers ...
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Base or foundation?

Please help, what is the correct term for: The bottom/foot part of building or structure which carries loads from the building/structure and transfers the loads to the soil/earth/ground beneath it? ...
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1answer
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What does the abbreviation “B.C.” mean on a weld joint diagram?

A translator posted this diagram of a weld joint on a translator's forum (the figure below). What does the abbreviation "B.C." mean on the diagram?
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86 views

What's the term used for machine parts orientation naming on the sagittal plane and from inside the machine?

I know that the current title can be hard to understand. Let me try to explain our problem: We do manufacture and service industrial machines and we are currently updating our spare parts manuals for ...
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2answers
122 views

How do you call the intersection with barrier and you can always right turn?

In the photo above I can name the first 3 intersection a) Regular intersection b) T intersection c) Skewed intersection I am having a hard time on identifying the fourth intersection, what do you ...
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1answer
78 views

What is the etymology of “bridge cam gauge”?

On the pictures below is a tool called "bridge cam gauge", mentioned in this answer. I wonder why the words "bridge" and "cam" are used in its name. I found a definition of "cam" that might be ...
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2answers
993 views

What tool does one use to inspect pipe bevel angles?

My translation of a document published by the Pervouralsk New Pipe Plant: Inspection of pipe-end root face (“face ring”) Inspection of this type is carried out as required by the ...
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Is “critical pipe” a proper term for a pipe used in a critically important role?

My translation: Internal pipe diameter inspection This kind of inspection is carried out on a by-order basis using a certified gauge (for sizes 40 mm and above) of the go/no go type, with ...
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1answer
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Looking for a common term for “non-circular pipe”

In Russia, there's a special term for a pipe that is not circular in its section: "a profiled pipe" (профильная труба). There's even a Wikipedia page for it: профильная труба. Such pipes come in a ...
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3answers
219 views

Phrase for describing a cable without a connector at the end

I've been translating a truck scale description in a business offer letter, and the specification table there, listing the five parts comprising the prospective order, says on line five: Cable for ...
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2answers
156 views

Questions on machinery terminology

I have some questions in the basics of machinery terminology Can a spring ever be a link? Most books (eg. Ham et al. 58, Shigley pg. 5) consider links to be rigid. However, I have come across ...
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1answer
215 views

What is the correct term for long cuts in a floor joist?

I would like to identify the correct term for a long, lateral cut within a floor joist. Based upon this guide and several other sources that I have come across, a ...
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3answers
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What do you call a mechanism where rotation is transfered in one direction only?

I have the following to wheels that rotate on the same axis: Assuming that they are stuck together, if I rotate the green one the red one rotates at the same speed and when I stop the green one the ...
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293 views

What is the meaning of 'clutch fill'?

What is the meaning of clutch fill? See for example this paper.
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1answer
116 views

What is a slotted open ring with a thread called (like on bicycle brake levers)?

I'm looking for a small ring that allows a thin cable to pass through but can also lock to close that opening, like on bicycle brake lever screws (shown below). However, I'm having trouble finding the ...
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3answers
508 views

What do you call the steel property that reduces the likelihood of shattering?

What is the property of not shattering, in for example a brisant explosion, called? And what kind of steel would I want that has this property?
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1answer
98 views

What is Byte Alignment Time in radio communication?

According to this paper, which deals with time synchronization in wireless networks, this kind of delay occurs, however I do not understand its explanation. The paper says the reciever (radio) has to ...
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4answers
358 views

How would you refer to a bolt mounting slide as opposed to a simple hole?

I'm writing a patent application and my device incorporates a similar design as what I've seen used on Dovetale plates. However, instead of a preset hole for positioning a bolt to mount to, a grooved ...
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What do you call the difference between the on and off temperatures in a simple thermostat?

A simple thermostat will turn on at one temperature and off at a higher temperature. This keeps the thermostat from cycling on and off too quickly. The difference between these values is sometimes ...
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1answer
119 views

What is the meaning of a “trip angle” in a level sensor?

What does trip angle mean in the context of slope / level sensors / inclinometers?
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4answers
346 views

What is the Technical Term for this kind of slot?

I am looking for the technical term which describes the kind of slot one finds commonly in modern phones to hold SIM cards. More specifically, what does one call a slot that one pushes the SIM card ...
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2answers
691 views

Is there a term for a circular dependency in system design and engineering

Is there a term used in systems engineering that describes a situation in which the design of one subsystem (call it "A") affects the the requirements for another subsystem (call it "B") while at the ...
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1answer
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What is the technical term for a document that contains the results of a final test for a specific product?

Currently, I have to design a final test for a product. I want to summarize the results in a test report. The report is automatically generated and gives a summary (quantitatively) of which ...
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3answers
669 views

How to describe the rotation of opposite ends of a body due to an applied moment

Summary A short way to phrase this question is: Shear describes the translation of one part of a body relative to another given an applied force. What is the equivalent rotational term? That is, ...
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Why the word “mileage” is used for vehicles, instead of efficiency?

Why is the word "mileage" used for vehicles, instead of efficiency? Is there any difference between mileage and efficiency?