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During shaping operation, the cutting tool exerts a force on the workpiece. This force can be resolved in two components(horizontal,vertical). Horizontal force is the cutting force. Vertical force causes the workpiece material to deform elastically. We know, an elastically deformed body regains its original shape after the force is removed. So, after the tool move past one elastically deformed section of the workpiece, the section is raised up as the force is removed from the section. This effect is called "Strain back effect".
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What are the accessories and function of a shaper machine?
A shaper machine typically includes accessories such as a vice for securing workpieces, various types of cutting tools (like single-point cutters), tool holders, and feed mechanisms. The primary function of a shaper machine is to produce flat surfaces, grooves, and contours on metal or other materials by using a reciprocating cutting tool. It can also be used for making keyways and slots. The machine operates by moving the cutting tool back and forth across the workpiece, allowing for precise shaping and finishing.
What is creep feed grinding?
Creepfeed grinding is a grinding process that can, in most cases, be used as an alternative to reciprocating surface grinding. The main difference is: Reciprocating grinding - the machine table speed is fast (800-1600"/min), and the grinding wheel infeed amount is very small (0.0002-0.002"/pass). ie removing small amounts of material while the table moves quickly back and forth. Creepfeed grinding-the machine table speed is slow (2-50"/min), and the grinding wheel infeed amount is high (up to .25"/pass). ie removing a large amount of material in one (or a few) slow pass. Creepfeed grinders generally require: high rigidity, full machine enclosure, high horsepower spindle drive, high volume/pressure coolant
How are pulleys used to change the chuck speed of a pillar drilling machine?
The pulley attached to the motor usually has a large wheel on bottom, two medium wheels in centre of the stack and a small one on top. The front, or spindle pulley, is fitted with the large wheel on top. The drive belt can go from top at back, to top at front -thus driving the spindle slowly. If you changed the belt to the big motor pulley and a small spindle pulley the spindle would rotate faster.
What is engine back compression?
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What is eccentric loading on a crane?
We could look at eccentric loading on a crane as the weight or load that is off the vertical axis of the crane. There are lots of different cranes, but let's dive in, bounce around a bit and speak in general terms. We'll start by taking a look at what a crane does and consider our options. A crane is designed to lift loads up, which is a simple but necessary start. Cranes generally have a boom extending out from the central axis of the crane. Now focus on this. The mass of the boom will be acted on by gravity and "pulled on" while it's sticking out. And the straighter it sticks out, the more the effect on the crane. That is, the more the mass of the boom will be acting to try to pull the crane over. And that's with no load. Let's do something crude but that might help. Pick up a broom near the end of the handle. Hold your arm straight out and hold the broom straight up in the air. You can feel the mass of the broom. Now lower the broom to where it is sticking straight out from your arm. There is a greater torque on your shoulder now because you're holding the broom straight out. Let's jump a bit now to look at a special type of crane. The tower crane, which is used in the construction of tall buildings, has a movable counterweight. That allows the operator to "balance" the effect of the load and the effect of the counterweight. They'll offset each other to pretty much eliminate any eccentric loading. Obviously the tower crane can't handle much of that without being ripped off the structure to which it is attached. Simple and effective. Think this through a moment before moving on. Got it? Good. On the "back" of a "regular" crane is a counterweight to offset the mass of the boom. Without the counterweight, the boom may tip the whole machine in the direction the boom is pointing. Recall that when we stick the boom out straighter, it tends to "torque" the crane off its vertical axis more. Why wouldn't it? The counterweight is doing its job. But there is no perfect match here between the mass in the counterweight and the boom. That's because as the boom is lowered or raised, the "effective mass" of the boom changes, even with no load on it. Now let's do a "pick" with the machine. A pick is a lifting operation. When we set up a crane, we generally have what are called outriggers to spot. These are "legs" that extend out from the crane and have a "foot" on them that is hydraulically shoved down on cribbing. These outriggers make the lifting platform more stable, and you can see why. The effective "footprint" of the machine is much greater with the outriggers set. We're ready to do a pick. When we hook up a load and lift it, the operator will be trying to keep the boom as "straight up in the air" as possible. This will minimize that "off-center loading" or eccentric loading. He's got the knowledge, skill and experience to use the machine in a way that will prevent eccentric loading from permitting a safe pick.
Do abdominal training machine really reduce back strain?
According to Popular Mechanics who tested several abdominal training machines, they believe that they can reduce back strain versus doing crunches with no machine.
What are the process of machining a keyway on a shaft by using shaping machine?
Machining a keyway on a shaft using a shaping machine involves several steps. First, the shaft is securely clamped in the machine's vice to prevent movement. The shaping tool, typically a single-point cutter, is then adjusted to the desired depth and width of the keyway. As the machine operates, the cutter moves back and forth across the shaft, removing material to create the keyway profile. Finally, the machined keyway is inspected for accuracy and finish.
How do you use guthy renker perfect abs machine?
The Guthy Renker Perfect Abs machine is designed for users to engage the core as they move in an up and down crunching motion. The machine allows participants to rest their neck and back comfortably to prevent strain.
Did you strain your ?
Did you strain your back when you were moving? Can you pinpoint where the pain is? Is there anything that makes it better or worse?
What are the functions of shaping machine?
A shaping machine is primarily used for producing flat surfaces, grooves, and other intricate shapes on workpieces. It operates by moving a cutting tool back and forth over the material, effectively removing metal in a controlled manner. Additionally, shaping machines can create various profiles and contours, making them essential for machining tasks in manufacturing and metalworking industries. They are especially useful for tasks that require precision and the ability to work with different materials.
What are the benefits of using the angle squat machine for lower body workouts?
The angle squat machine can help improve lower body strength, stability, and muscle tone. It also provides support for proper form and reduces strain on the back and knees during squats.
What is the icd 9 code for rhomboid strain?
847.9 (sprain and strain of unspecified site of back)
How do you use the word strain in a sentence?
john strained his back at football practice
What is the best pain reliever for back strain?
SPLIFF
What type of strain will you experience when you scratch your back?
shear
When pieces of rock are snapped back it is called?
a strain
Meaning of lumbar strain?
A strain is a medical term meaning there has been abnormal stretching on a muscle and its tendons. This generally causes a painful contraction of the muscle in an attempt to protect itself from further damage. A lumbar strain is a strain in the lumbar region of the back, specifically, the region of the back from below the ribcage to where the spine attaches to the pelvis. This is a very common cause of back pain.
