![1) [20 pts] Power screw geometry A power screw is 26 mm in diameter and has a thread pitch of 5 mm. a) Find the thread depth,](http://img.homeworklib.com/questions/440cf960-ff37-11ea-a8e3-518d2114a5e6.png?x-oss-process=image/resize,w_560)
Homework Answers
Add Answer to:
1) [20 pts] Power screw geometry A power screw is 26 mm in diameter and has...
A single-square threaded 35-mm power screw is 35 mm in diameter with a pitch of 5 mm. A vertical load on the screw reac...
A single-square threaded 35-mm power screw is 35 mm in diameter with a pitch of 5 mm. A vertical load on the screw reaches a maximum of 5 kN. The coefficients of friction are 0.06 for the collar and 0.09 for the threads. The frictional diameter of the collar is 45 mm. Find the overall efficiency and the torque to "raise" and "lower" the load Repeat this problem if ACME screw is used in this design.
A single-square threaded 35-mm...
2. A square threaded power screw is used for a machine tool. The screw has 75 mm external diameter and 12 mm pitch. The operating nut takes the axial load of 550 N on a flat surface of 70 mm and 1...
2. A square threaded power screw is used for a machine tool. The screw has 75 mm external diameter and 12 mm pitch. The operating nut takes the axial load of 550 N on a flat surface of 70 mm and 105 mm internal and external diameters respectively If the coefficient of friction is 0.16 for all contact surfaces on the nut, determine the power required to rotate the operating nut when the cutting speed is 7.5 m/min. Also find...
A square power screw has a mean diameter of 30 mm and a pitch of 4...
A square power screw has a mean diameter of 30 mm and a pitch of 4 mm with single thread. The collar diameter can be assumed to be 35 mm. The screw is to be used to lift and lower a load of 7 kN. A coefficient of friction of 0.05 is to be used for friction at the thread and at the collar. Determine the following: (i) Torque required to raise the load. TR. (Equation 8.1) (ii) Torque required...
Question 1 (10 pts) A square-threaded, single thread power screw with a mean diameter of 1...
Question 1 (10 pts) A square-threaded, single thread power screw with a mean diameter of 1 in and four threads per inch is used to raise a load of 25,000 lb. The collar mean diameter is 1.5 in. The coefficient of friction is 0.1 for both the thread and the collar. Determine the following: Load 25,000 lb Q1.1. Determine the major diameter of the screw (2pts) Q1.2. Determine the screw torque required to raise the load (2pts) Q1.3. Determine the...
for external Maintenan diameter of a screw thread is h 1. The diameter measured from root...
for external Maintenan diameter of a screw thread is h 1. The diameter measured from root to root fo thread. A. major B. minor C. pitch D. outside 2. The thread permitted in engagement between mating A. form B. series C. pitch specifies the amount of tole of tolerance mating threads D. class 3. Which of the following has a head at one end external threads at the other to accept a nut A. Self-tapping screw B. Washer C. Retaining...
2. The C clamp shown in the figure below uses an Acme thread screw. The screw...
2. The C clamp shown in the figure below uses an Acme thread screw. The screw has a diameter of 17 mm and a pitch of 5 mm. The frictional coefficients are 0.15 for the threads and 0.20 for the collar. The collar, which in this case is the anvil striker's swivel joint, has a friction diameter of 25 mm. Find the clamping force if 105 N force applied to the handle at a distance of 100 mm from the...
4. A single-start, square-threaded power screw has the following baseline character- istics: Outside diameter pitch, p...
4. A single-start, square-threaded power screw has the following baseline character- istics: Outside diameter pitch, p Load, W 25.4 mm 5.08 mm 1500 N thread friction coefficient 0.08 collar friction coefficient collar diameter 0.04 28 mm (a) What torque, TR, total, is required to raise the load? Include units. (b) What torque, TL, total, is required to lower the load? Include units (c) Suppose the screw runs at 100 rpm for ten seconds, raising the load. How much energy is...
A screw jack has a screw thread 7.5 cm mean diameter and 1.5 cm pitch the...
A screw jack has a screw thread 7.5 cm mean diameter and 1.5 cm pitch the load on the jack revolves with the screw the coefficient of friction at the screw threads is 0.05 find the tangential force to be applied to the jack at 36 cm radius so as to lift a load
PROBLEM 5: Figure shows a screw jack lifting a non- rotating load of 200 kg. The...
PROBLEM 5: Figure shows a screw jack lifting a non- rotating load of 200 kg. The screw jack consists of a single square screw thread with a major diameter of 30 mm and 10 threads per 5 cm. A rotating nut, driven by a leverage arm moves a plain thrust collar with diameter de 50 mm, which in turn lifts and lowers the load. The friction coefficient between the nut and the collar μ -0.25 and the friction coefficient between...
1. A single-threaded ACME power screw has a major diameter d=1.25 in with a pitch of...
1. A single-threaded ACME power screw has a major diameter d=1.25 in with a pitch of 0.2 in. The threaded coefficient of friction u is 0.2, and the coefficient of collar friction He is 0.15. The mean collar diameter de is 2 in. The external load on the screw is 1200 lb. Find: a) The torque required to raise the load. b) The maximum nominal shear stress of the screw body.
A single-square threaded 35-mm power screw is 35 mm in diameter with a pitch of 5 mm. A vertical load on the screw reaches a maximum of 5 kN. The coefficients of friction are 0.06 for the collar and 0.09 for the threads. The frictional diameter of the collar is 45 mm. Find the overall efficiency and the torque to "raise" and "lower" the load Repeat this problem if ACME screw is used in this design.
A single-square threaded 35-mm...
2. A square threaded power screw is used for a machine tool. The screw has 75 mm external diameter and 12 mm pitch. The operating nut takes the axial load of 550 N on a flat surface of 70 mm and 105 mm internal and external diameters respectively If the coefficient of friction is 0.16 for all contact surfaces on the nut, determine the power required to rotate the operating nut when the cutting speed is 7.5 m/min. Also find...
A square power screw has a mean diameter of 30 mm and a pitch of 4 mm with single thread. The collar diameter can be assumed to be 35 mm. The screw is to be used to lift and lower a load of 7 kN. A coefficient of friction of 0.05 is to be used for friction at the thread and at the collar. Determine the following: (i) Torque required to raise the load. TR. (Equation 8.1) (ii) Torque required...
Question 1 (10 pts) A square-threaded, single thread power screw with a mean diameter of 1 in and four threads per inch is used to raise a load of 25,000 lb. The collar mean diameter is 1.5 in. The coefficient of friction is 0.1 for both the thread and the collar. Determine the following: Load 25,000 lb Q1.1. Determine the major diameter of the screw (2pts) Q1.2. Determine the screw torque required to raise the load (2pts) Q1.3. Determine the...
for external Maintenan diameter of a screw thread is h 1. The diameter measured from root to root fo thread. A. major B. minor C. pitch D. outside 2. The thread permitted in engagement between mating A. form B. series C. pitch specifies the amount of tole of tolerance mating threads D. class 3. Which of the following has a head at one end external threads at the other to accept a nut A. Self-tapping screw B. Washer C. Retaining...
2. The C clamp shown in the figure below uses an Acme thread screw. The screw has a diameter of 17 mm and a pitch of 5 mm. The frictional coefficients are 0.15 for the threads and 0.20 for the collar. The collar, which in this case is the anvil striker's swivel joint, has a friction diameter of 25 mm. Find the clamping force if 105 N force applied to the handle at a distance of 100 mm from the...
4. A single-start, square-threaded power screw has the following baseline character- istics: Outside diameter pitch, p Load, W 25.4 mm 5.08 mm 1500 N thread friction coefficient 0.08 collar friction coefficient collar diameter 0.04 28 mm (a) What torque, TR, total, is required to raise the load? Include units. (b) What torque, TL, total, is required to lower the load? Include units (c) Suppose the screw runs at 100 rpm for ten seconds, raising the load. How much energy is...
PROBLEM 5: Figure shows a screw jack lifting a non- rotating load of 200 kg. The screw jack consists of a single square screw thread with a major diameter of 30 mm and 10 threads per 5 cm. A rotating nut, driven by a leverage arm moves a plain thrust collar with diameter de 50 mm, which in turn lifts and lowers the load. The friction coefficient between the nut and the collar μ -0.25 and the friction coefficient between...
1. A single-threaded ACME power screw has a major diameter d=1.25 in with a pitch of 0.2 in. The threaded coefficient of friction u is 0.2, and the coefficient of collar friction He is 0.15. The mean collar diameter de is 2 in. The external load on the screw is 1200 lb. Find: a) The torque required to raise the load. b) The maximum nominal shear stress of the screw body.
Most questions answered within 3 hours.
-
lease solve all the
questions, don't need to explanations
Q1 - All animal
species have general...
asked 1 hour ago -
Business Phasing
1.Discuss the logical progression for growing a business, which
starts from the initial idea...
asked 2 hours ago -
Modify
When executing on the command line having only
this program name, the program will accept...
asked 3 hours ago -
Kenny Electric Company's noncallable bonds were issued several
years ago and now have 20 years to...
asked 3 hours ago -
find H(e^Jtheta) at theta= 0, pi/10, pi/20, pi/2 for
the following:
a) H(e^Jtheta)= 1+e^Jtheta
b) H(e^Jtheta)=...
asked 3 hours ago -
Home Corporation will open a new store on January 1. Based on
experience from its other...
asked 4 hours ago -
In a neoclassical model, use the IS-LM to analyze the effect of
a permanent money supply...
asked 4 hours ago -
An electron passes through a point 2.67 cm from a long straight
wire as it moves...
asked 5 hours ago -
A grammar is a 4-tuple G, G = (Ν, Σ, Π, Σ, S) where, Ν is...
asked 6 hours ago -
In this part, calculate the present values. Use the Excel PV
function to compute the present...
asked 6 hours ago -
Part 1. Primitive Types, Sorting, Recursion for
Homework.java
a) Implement the static method initializeArray that receives...
asked 7 hours ago -
Using C++, build a sorter that can rank a sequence of numbers in
a descending order....
asked 7 hours ago