What is broaching in machining?
Broaching is a machining process using a cutting tool with teeth that increase in size from front to back. In many cases, an entire surface (or multiple surfaces) can be finished in a single pass with broaching. The technique is most often applied to finish holes, splines and flat surfaces.
What is a keyway?
“Keyway” is the term for the shape of the interface between a lock and its key. It’s most clearly seen when you imagine the cross section of the “blade ” of a key. If you have the right keyway but the wrong key, you can easily slide the key into the lock ¬≠but it won’t turn.
What is the purpose of a keyway?
A keyway is a long slot cut into a component to accept a key that engages with a similar slot on a mating component so that the two components do not move against each other. If the key is not fitting properly in both the flywheel and crank shaft keyways, replace the key.
How do you determine keyway?
Look at the large end of the key (also called the bow). If the bow has straight sides and a triangle-shaped top (like a house), you probably have a KW1 keyway. If the key is diamond-shaped (narrower at the top and bottom and wide in the middle), you probably have a SC1 keyway.
What is standard keyway size?
Inch (ANSI/AGMA 9002-B4)
| Nominal Shaft Diameter ( A ) | Keyway Width ( C ) | |
|---|---|---|
| fractional | decimal | decimal |
| 1-7/16 | 1.4375 | 0.375 |
| 1-1/2 | 1.5 | 0.375 |
| 1-9/16 | 1.5625 | 0.375 |
What does key dimension mean?
A dimension key is the primary key of a dimension table. In the example below, the “Time_key” column is the dimension/primary key of the Time dimension. A degenerate dimension is, however, a different and slightly more advanced concept to model.
What is the recommended width of key relative to the shaft diameter?
KEY SIZE VERSUS SHAFT DIAMETER PER ANSI B17. 1-1967 (R1998) The designer chooses an appropriate key length to carry the torsional load. Failure of the key can be by direct shear, or by bearing stress. Square keys are preferred through 6-1/2 inch diameter shafts and rectangular keys are preferred for larger shafts.
What is a concrete keyway?
A cold joint left permanently in concrete slabs used as a load transfer device at slab joints. Serves as a contraction joint, an edge form, and screeding rail during construction.
What is a waterstop in concrete?
A waterstop is a material embedded in the concrete, with the singular purpose to obstruct the passage of water through the joint. In other words, it is not an elastomeric sealant adhered to the exposed surface of a joint.
What is a keyway in grading?
“Grading” means any excavation or filling or combination thereof. “Keyway” means an excavated trench into competent earth material beneath the toe of a proposed fill slope.
What is a keyway in a dam?
When excavating begins into the dam wall, a “keyway” is made. A keyway is a pathway excavated in the outside trench wall that will allow water to escape should the pond side of the trench collapse. This creates a drain so the pond water can drain out of the trench instead of filling it up.
How deep should a 1 acre pond be?
Everyone wants a pond super deep. However, the average pond we dig is 12′ deep throughout and depending on the size at least one area 15′ deep. If the pond is large enough, say 1 acre we can dig a couple holes in the pond 15″ to 20′ deep and maybe 25′ round.
What is core trench?
A trench constructed in the undisturbed foundation soil under a dam or embankment. It is constructed in a way to stop water from seeping beneath the dam.
How do you build a dam for a pond?
A pond dam and spillway are for a pond that has an incoming water source; they don’t apply to a pond of standing water.
- Locate the water source that feeds water to the pond.
- Place large rocks 6 feet upstream from where the water source meets the edge of the pond to create a temporary dam.
Can you dig a pond with a front end loader?
Front-end loader buckets can be used to dig a pond. They come as small as 48” wide for a capacity of 13.9 cubic feet of material (heaped SAE rating). They may also be as wide as 108” for a capacity of 32.3 cubic feet (heaped SAE rating), or wider for larger machines.
How deep can you dig a pond?
Having most of a ponds depth between 10-12 feet is ideal. The ideal average water depth is 8 feet. Some people love beach areas. Just make sure you are prepared to treat these areas for weeds and algae.
Can you just dig a hole for a pond?
The deeper you can dig, the better the pond will look. It’s tough to make a pond look natural when it’s sitting 18 inches above the surrounding soil. The easiest way to handle this problem is to dig the pond with a flat bottom, with the side gently sloping into the middle. Once the pond is dug, you have two options.
How do you seal the bottom of a pond?
3.4 How to seal the pond bottom with a soil blanket
- using layers of rocks or stones at the water inlet ;
- spreading a cover of gravel 30 to 45 cm thick just below the maximum water level, if there is a danger of water freezing;
Can I dig a hole and fill it with water?
If you dig a little hole, there’s not much groundwater beneath it so any water seeps away quickly. But if you dig a big hole, you’ll get down deep enough so the soil is already saturated and is unable to accept any more water. If you were to dig under a lake you would be digging into saturated soil and rock.
Does bentonite hurt fish?
Although the sodium bentonite is not toxic, the tiny micro-particles of bentonite could attach to the fishes gills and cause them to suffocate due to lack of oxygen. This will minimize the hazard to fish in the pond.
Does bentonite kill fish?
Will sodium bentonite kill fish? Sodium Bentonite is environmentally safe and does not affect the water, livestock, or wildlife. When properly applied, it will not harm fish. … Safe, natural, relatively inexpensive, the watertight membrane that may be your best answer to sealing your pond is sodium bentonite clay!
How much is bentonite a ton?
In 2020, the average bentonite price stood at approximately 98 U.S. dollars per ton. Bentonite is a type of clay along with ball clay, common clay, and fire clay.
How much bentonite do I need for a 1 acre pond?
Average bentonite application rates range between 2 pounds per square foot and 6 pounds per square foot. This means that the total amount of bentonite needed to seal most pond bottoms is measured per ton rather than in pounds.
Will kitty litter seal a pond?
So we’ve proved you can use clumping cat litter to seal a pond because clumping cat litter is made of bentonite clay. The more water the bentonite clay absorbs, the more gooey it gets, so here’s a few things you shouldn’t do: Apply this as a surface coating.
How do you use bentonite?
Mix soil with bentonite at that rate in lbs/square foot. Thoroughly blend the soil and dry granular bentonite until the mixture is uniform. Add 3 cups of water to the soil bentonite mixture and mix again until moisture is evenly distributed. Firmly tamp the soil/bentonite mixture into the bottom of the bucket.
How do you waterproof a dam?
What you can do about leaky dams
- Build a new dam in a suitable position with suitable soils.
- Add a plastic membrane liner in the dam when the dam is empty.
- Compact soil in the dam when the dam is empty.
- Blend and compact soil in the dam when the dam is empty.
- Add a local clay liner in the dam when the dam is empty.