If an Acme-thread power screw is loaded in tension with a force of 30 000 lb, what
Question:
If an Acme-thread power screw is loaded in tension with a force of 30 000 lb, what size screw from Table 17–1 should be used to maintain a tensile stress below 10 000 psi?
Data in Table 17–1
Transcribed Image Text:
TABLE 17-1 Preferred Acme Screw Threads Nominal major diameter, D (in) 1/4 5/16 3/8 7/16 1/2 5/8 3/4 7/8 1 1/ 13/ 2 23 3 4 Threads per in, n 16 14 12 12 10 8 6 6 5 5 5 4 4 4 4 3 3 3 2 2 2 2 2 5 aPer inch of length of engagement. Pitch, p = 1/n (in) 0.0625 0.0714 0.0833 0.0833 0.1000 0.1250 0.1667 0.1667 0.2000 0.2000 0.2000 0.2500 0.2500 0.2500 0.2500 0.3333 0.3333 0.3333 0.5000 0.5000 0.5000 0.5000 0.5000 Minimum minor diameter, D, (in) 0.1618 0.2140 0.2632 0.3253 0.3594 0.4570 0.5371 0.6615 0.7509 0.8753 0.9998 1.0719 1.1965 1.4456 1.6948 1.8572 2.1065 2.3558 2.4326 2.9314 3.4302 3.9291 4.4281 Minimum pitch diameter, D, (in) 0.2043 0.2614 0.3161 0.3783 0.4306 0.5408 0.6424 0.7663 0.8726 0.9967 1.1210 1.2188 1.3429 1.5916 1.8402 2.0450 2.2939 2.5427 2.7044 3.2026 3.7008 4.1991 4.6973 Tensile stress area, A, (in²) 0.026 32 0.044 38 0.065 89 0.097 20 0.1225 0.1955 0.2732 0.4003 0.5175 0.6881 0.8831 1.030 1.266 1.811 2.454 2.982 3.802 4.711 5.181 7.388 9.985 12.972 16.351 Shear stress area, Aç (in²)a 0.3355 0.4344 0.5276 0.6396 0.7278 0.9180 1.084 1.313 1.493 1.722 1.952 2.110 2.341 2.803 3.262 3.610 4.075 4.538 4.757 5.700 6.640 7.577 8.511
Fantastic news! We've Found the answer you've been seeking!
Step by Step Answer:
Answer rating: 66% (3 reviews)
To determine the appropriate Acme screw size from Table 171 you need to find a screw that can handle ...View the full answer
Answered By
Chandrasekhar Karri
I have tutored students in accounting at the high school and college levels. I have developed strong teaching methods, which allow me to effectively explain complex accounting concepts to students. Additionally, I am committed to helping students reach their academic goals and providing them with the necessary tools to succeed.
0.00
0 Reviews
10+ Question Solved
Related Book For
Machine Elements In Mechanical Design
ISBN: 9780134441184
6th Edition
Authors: Robert Mott, Edward Vavrek, Jyhwen Wang
Question Posted:
Students also viewed these Engineering questions
-
Compute the torque required to raise the load of 30 000 lb with the Acme screw selected in Problem 5. Use a coefficient of friction of 0.15. Data in Problem 5. If an Acme-thread power screw is loaded...
-
Compute the torque required to lower the load with the screw from Problem 5. Data in Problem 5. If an Acme-thread power screw is loaded in tension with a force of 30 000 lb, what size screw from...
-
A cylindrical specimen of a brass alloy 7.5 mm (0.30 in.) in diameter and 90.0 mm (3.54 in.) long is pulled in tension with a force of 6000 N (1350lb f ); the force is subsequently released. (a)...
-
Use the figure to make the lists in Exercises 8586. List the slopes m 1 , m 2 , m 3 , and m 4 in order of decreasing size. y y = mx + b y = mx + b X - y = m3x + b3 y = m4x + b4
-
Gazelle Corporation, a merchandiser, recently completed its calendar- year 2013 operations. For the year, (1) all sales are credit sales, (2) all credits to Accounts Receivable reflect cash receipts...
-
On October 1, 2015, Jenco signed a four-year, $100,000 note payable to Vicksburg State Bank in conjunction with the purchase of equipment. The note calls for interest at an annual rate of 12 percent...
-
Model exponential growth using pennies. Think of a penny as a single-celled organism that reproduces by dividing into two once each day. On day 1, you have one penny. On day 2, you have two pennies....
-
You are the manager of a firm that manufactures front and rear windshields for the automobile industry. Due to economies of scale in the industry, entry by new firms is not profitable. Toyota has...
-
Are you an adaptable or resilient person? What do you think are the qualities a person should have to be adaptable and resilient?
-
Compute the required basic dynamic load rating, C, for a ball bearing to carry a radial load of 1450 lb at a shaft speed of 1150 rpm for an industrial fan.
-
Determine the required basic dynamic load rating for a bearing to carry 1250 lb from a shaft rotating at 880 rpm if the design life is to be 20 000 h.
-
Explain what ijara or leasing is and how it can be reconciled with the principles of Islamic finance. Is it appropriate to refer to ijara as debt-like financing?
-
On an Agile or adaptive project, the goal is often to produce a: a. Cost-benefit Analysis b. Minimum Viable Product (MVP) c. Business Case d. Subproject
-
A narrative description of products, services, or results to be delivered by the project is a/an: a. request for information b. business case c. project statement of work d. elevator pitch
-
_______________ is a quantitative risk analysis modeling technique used to help determine which risks have the most powerful impact on the project. Using a tool such as a tornado diagram, it examines...
-
When might consensus be the best decisionmaking strategy?
-
If more than one parent company is involved in a project, why is it important for the project manager to understand the culture of each?
-
At 450oC, Kp = 6.5 10-3 for the ammonia synthesis reaction. Assume that a reaction vessel with a movable piston initially contains 3.0 moles of H2(g) and 1.0 mole of N2(g). Make a plot to show how...
-
Discuss whether responsible human resources management should apply different standards for the home company and suppliers, for developed countries and developing countries, and for large companies...
-
A 1500 kN load was applied on two 20 m long and 500 mm diameter piles that were instrumented for measuring the load variation with depth. a. The variation of frictional resistance per unit area, f...
-
A 300 mm 450 mm plate was used in carrying out a plate loading test in a sand, where the plate settled 5 mm under the applied pressure of 250 kN/m 2 . a. What is the coefficient of subgrade reaction...
-
For a 2.0 m wide and 0.40 m thick beam on elastic foundation, determine the coefficient of subgrade reaction k using Eqs. (10.45) and (10.46), assuming the following parameters: E s = 30 MN/m 2 , E F...
-
A company reports the following: Sales $755,550 Average accounts receivable (net) 50,370 Determine (a) the accounts receivable turnover and (b) the number of days' sales in receivables. Round interim...
-
as at 1 July 2022, Winki company enters into a 10 year lease contract for building. Lease payments are $400,000 per year, starting on 30June 2023 and there is no purchase option or residual value...
-
You are examining a company's balance sheet and find that it has total assets of $20,572, a cash balance of $2,208, inventory of $4,913, current liabilities of $5,829, and accounts receivable of...
Study smarter with the SolutionInn App