Mathematics For Machine Technology
Mathematics For Machine Technology
8th Edition
ISBN: 9781337798310
Author: Peterson, John.
Publisher: Cengage Learning,
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Chapter 82, Problem 12A
To determine

(a)

The coordinates in table form for the holes by using absolute programming.

Expert Solution
Check Mark

Explanation of Solution

Given:

The length A is 170.00 mm.

The length B is 130.00 mm.

The length C is 122.40 mm.

The length D is 30.00 mm.

The length E is 30.00 mm.

The length F is 300.40 mm.

The length G is 450.00 mm.

The length H is 249.30 mm.

The length J is 269.30 mm.

The length K is 218.70mm.

The length L is 104.00mm.

The length M is 228.00 mm.

The length N is 95.10 mm.

Pitch diameter of circular pattern with holes is 196.00 mm.

Angle 1 is 41.75°.

Concept Used:

Draw the diagram for the location of holes as shown below:

Mathematics For Machine Technology, Chapter 82, Problem 12A

Write the expression for the location of first hole in absolute programming.

  (x1,y1)=(AC,HB) ...... (1)

Here, x1 is the x coordinate of first hole from origin and y1 is the y coordinate of first hole from origin.

Write the expression for the location of second hole in absolute programming.

  (x2,y2)=(x1Lcos1,y1+Lsin1) ...... (2)

Here, x2 is the x coordinate of second hole from origin and y2 is the y coordinate of second hole from origin.

Write the expression for the location of third hole in absolute programming.

  (x3,y3)=(Mcos1x1,Msin1+y1) ...... (3)

Here, x3 is the x coordinate of third hole from origin and y3 is the y coordinate of third hole from origin.

Write the expression for the location of fourth hole in absolute programming.

  (x4,y4)=(Fx1P2cos72°,y1+P2sin72°) ...... (4)

Here, x4 is the x coordinate of fourth hole from origin and y4 is the y coordinate of fourth hole from origin.

Write the expression for the location of fifth hole in absolute programming.

  (x5,y5)=(Fx1+P2cos36°,y1+P2sin36°) ...... (5)

Here, x5 is the x coordinate of fifth hole from origin and y5 is the y coordinate of fifth hole from origin.

Write the expression for the location of sixth hole in absolute programming.

  (x6,y6)=(Gx1,Ny1) ...... (6)

Here, x6 is the x coordinate of sixth hole from origin and y6 is the y coordinate of sixth hole from origin.

Write the expression for the location of seventh hole in absolute programming.

  (x7,y7)=(Fx1+P2cos36°,y1P2sin36°) ...... (7)

Here, x7 is the x coordinate of seventh hole from origin and y7 is the y coordinate of seventh hole from origin.

Write the expression for the location of eighth hole in absolute programming.

  (x8,y8)=(Fx1+P2cos72°,P2sin72°y1) ...... (8)

Here, x8 is the x coordinate of eighth hole from origin and y8 is the y coordinate of eighth hole from origin.

Write the expression for the location of ninth hole in absolute programming.

  (x9,y9)=(Fx1P2,y1) ...... (9)

Here, x9 is the x coordinate of ninth hole from origin and y9 is the y coordinate of ninth hole from origin.

Write the expression for the location of tenth hole in absolute programming.

  (x10,y10)=(x1E,Ky1) ...... (10)

Here, x10 is the x coordinate of tenth hole from origin and y10 is the y coordinate of tenth hole from origin.

Write the expression for the location of eleventh hole in absolute programming.

  (x11,y11)=(AC+D,Jy1) ...... (11)

Here, x11 is the x coordinate of eleventh hole from origin and y11 is the y coordinate of eleventh hole from origin.

Calculation:

Substitute 170.00mm for A, 122.40mm for C, 249.30mm for H and 130.00mm for B in equation (1).

  (x1,y1)=(170.00122.40,249.30130.00)=(47.60 mm,119.30mm)

The coordinates of first hole in absolute programming is (47.60 mm,119.30mm).

Substitute 47.60mm for x1, 104.00mm for L, 119.30mm for y1 and 41.75° for 1 in equation (2).

  (x2,y2)=(104.00cos41.75°47.60,119.30+104.00sin41.75°)=(29.98mm, 188.55mm)

The coordinates of second hole in absolute programming is (29.98mm, 188.55mm).

Substitute 47.60mm for x1, 228.00 mm for M, 119.30mm for y1 and 41.75° for 1 in equation (3).

  (x3,y3)=(228.00cos41.75°47.60,228.00sin41.75°+119.30)=(122.50mm,271.12mm)

The coordinates of third hole in absolute programming is (122.50mm,271.12mm).

Substitute 47.60mm for x1, 300.40mm for F, 119.30mm for y1 and 196.00 mm for P in equation (4).

  (x4,y4)=(300.4047.60 196.002cos72°,119.30+ 196.002sin72°)=(222.51mm,212.50 mm)

The coordinates of fourth hole in absolute programming is (222.51mm,212.50 mm).

Substitute 47.60mm for x1, 300.40mm for F, 119.30mm for y1 and 196.00 mm for P in equation (5).

  (x5,y5)=(300.4047.60+ 196.002cos36°,119.30+ 196.002sin36°)=(332.08mm,176.90mm)

The coordinates of fifth hole in absolute programming is (332.08mm,176.90mm).

Substitute 47.60mm for x1, 450.00mm for G, 119.30mm for y1 and 95.10mm for N in equation (6).

  (x6,y6)=(450.0047.60,95.10119.30)=(402.40mm, 24.20mm)

The coordinates of sixth hole in absolute programming is (402.40mm, 24.20mm).

Substitute 47.60mm for x1, 300.40mm for F, 119.30mm for y1 and 196.00 mm for P in equation (7).

  (x7,y7)=(300.4047.60+ 196.002cos36°,119.30 196.002sin36°)=(332.08mm, 61.70mm)

The coordinates of seventh hole in absolute programming is (332.08mm, 61.70mm).

Substitute 47.60mm for x1, 300.40mm for F, 119.30mm for y1 and 196.00 mm for P in equation (8).

  (x8,y8)=(300.4047.60 196.002cos72°, 196.002sin72°119.30)=(283.08mm, 26.10mm)

The coordinates of eighth hole in absolute programming is (283.08mm, 26.10mm).

Substitute 47.60mm for x1, 300.40mm for F, 119.30mm for y1 and 196.00 mm for P in equation (9).

  (x9,y9)=(300.4047.60 196.002,119.30)=(350.08mm, 119.30mm)

The coordinates of ninth hole in absolute programming is (350.08mm, 119.30mm).

Substitute 47.60mm for x1, 30.00 mm for E, 119.30mm for y1 and 218.70mm for K in equation (10).

  (x 10,y 10)=(47.6030.00,218.70119.30)=(17.60 mm, 99.40 mm)

The coordinates of tenth hole in absolute programming is (17.60 mm, 99.40 mm).

Substitute 170.00mm for A, 122.40mm for C, 119.30 mm for y1, 269.30mm for J and 30.00 mm for D in equation (10).

  (x 11,y 11)=(170.00122.40+30.00,269.30119.30)=(77.60 mm, 150mm)

The coordinates of eleventh hole in absolute programming is (77.60 mm, 150mm).

Conclusion:

The coordinate of each hole is shown in below table:

    HoleX-coordinate (in mm)Y-coordinate (in mm)
    147.60  119.30
    229.98188.55
    3122.50271.12
    4222.51212.50
    5323.08176.90
    6402.4024.20
    7  323.08  119.30
    8283.0826.10
    9350.08119.30
    1017.6099.40
    1177.60150.00
To determine

(b)

The coordinates in table form for the holes by using incremental programming.

Expert Solution
Check Mark

Explanation of Solution

Concept Used:

Write the expression for the location of first hole in incremental programming.

  (x1,y1)=(x1,y1) ...... (12)

Here, x1 is the x coordinate of first hole from origin and y1 is the y coordinate of first hole from origin.

Write the expression for the location of second hole in incremental programming.

  (x2,y2)=(x2x1,y2y1) ...... (13)

Here, x2 is the x coordinate of second hole from origin and y2 is the y coordinate of second hole from first hole.

Write the expression for the location of third hole in incremental programming.

  (x3,y3)=(x3x2,y3y2) ...... (14)

Here, x3 is the x coordinate of third hole from origin and y3 is the y coordinate of third hole from second hole.

Write the expression for the location of fourth hole in incremental programming.

  (x4,y4)=(x4x3,y4y3) ...... (15)

Here, x4 is the x coordinate of fourth hole from origin and y4 is the y coordinate of fourth hole from third hole.

Write the expression for the location of fifth hole in incremental programming.

  (x5,y5)=(x5x4,y5y4) ...... (16)

Here, x5 is the x coordinate of fifth hole from origin and y5 is the y coordinate of fifth hole from fourth hole.

Write the expression for the location of sixth hole in incremental programming.

  (x6,y6)=(x6x5,y6y5) ...... (17)

Here, x6 is the x coordinate of sixth hole from origin and y6 is the y coordinate of sixth hole from fifth hole.

Write the expression for the location of seventh hole in incremental programming.

  (x7,y7)=(x7x6,y7y6) ...... (18)

Here, x7 is the x coordinate of seventh hole from origin and y7 is the y coordinate of seventh hole from sixth hole.

Write the expression for the location of eighth hole in incremental programming.

  (x8,y8)=(x8x7,y8y7) ...... (19)

Here, x8 is the x coordinate of eighth hole from origin and y8 is the y coordinate of eighth hole from seventh hole.

Write the expression for the location of ninth hole in incremental programming.

  (x9,y9)=(x9x8,y9y8) ...... (20)

Here, x9 is the x coordinate of ninth hole from origin and y9 is the y coordinate of ninth hole from eighth hole.

Write the expression for the location of tenth hole in incremental programming.

  (x10,y10)=(x10x9,y10y9) ...... (21)

Here, x10 is the x coordinate of tenth hole from origin and y10 is the y coordinate of tenth hole from ninth hole.

Write the expression for the location of eleventh hole in incremental programming.

  (x11,y11)=(x11x10,y11y10) ...... (22)

Here, x10 is the x coordinate of eleventh hole from origin and y10 is the y coordinate of eleventh hole from tenth hole.

Calculation:

Substitute 47.60mm for x1 and 119.30 mm for y1 in equation (12).

  (x1,y1)=(47.60mm, 119.30mm)

The coordinates of first hole in incremental programming is (47.60mm, 119.30mm).

Substitute 47.60mm for x1, 29.98 mm for x2, 188.55mm for y2 and 119.30 mm for y1 in equation (13).

  ( x 2, y 2)=(29.98+47.60,188.55119.30)=(17.62mm, 69.25mm)

The coordinates of second hole in incremental programming is (17.62mm, 69.25mm).

Substitute 29.98 mm for x2, 188.55mm for y2, 122.50 mm for x3 and 271.12 mm for y3 in equation (14).

  ( x 3, y 3)=(122.50+29.98,271.12188.55)=(152.48 mm,82.57 mm)

The coordinates of third hole in incremental programming is (152.48 mm,82.57 mm).

Substitute 222.51 mm for x4, 212.50mm for y4, 122.50 mm for x3 and 271.12 mm for y3 in equation (15).

  ( x 4, y 4)=(222.51122.50,212.50271.50)=(100.01 mm, 58.62mm)

The coordinates of fourth hole in incremental programming is (100.01 mm, 58.62mm).

Substitute 222.51 mm for x4, 212.50mm for y4, 332.08mm for x5 and 176.90mm for y5 in equation (16).

  ( x 5, y 5)=(332.08222.51,176.90221.50)=(109.57mm, 35.60mm)

The coordinates of fifth hole in incremental programming is (109.57mm, 35.60mm).

Substitute 402.40 mm for x6, 24.20mm for y6, 332.08mm for x5 and 176.90mm for y5 in equation (17).

  ( x 6, y 6)=(402.40332.08,24.20176.90)=(70.32mm,201.10mm)

The coordinates of sixth hole in incremental programming is (70.32mm,201.10mm).

Substitute 402.40 mm for x6, 24.20mm for y6, 332.08mm for x7 and 61.70mm for y7 in equation (18).

  ( x 7, y 7)=(332.08402.40,61.70+24.20)=(70.32mm,85.90 mm)

The coordinates of seventh hole in incremental programming is (70.32mm,85.90 mm).

Substitute 283.08 mm for x8, 26.10mm for y8, 332.08mm for x7 and 61.70mm for y7 in equation (19).

  ( x 8, y 8)=(283.08332.08,26.1061.70)=(49.00mm,87.80mm)

The coordinates of eighth hole in incremental programming is (49.00mm,87.80mm).

Substitute 283.08 mm for x8, 26.10mm for y8, 350.08 mm for x9 and 119.30mm for y9 in equation (20).

  ( x 9, y 9)=(350.08283.08,119.30+26.10)=(67.00mm, 145.40mm)

The coordinates of ninth hole in incremental programming is (67.00mm, 145.40mm).

Substitute 17.60 mm for x10, 99.40mm for y10, 350.08 mm for x9 and 119.30mm for y9 in equation (21).

  ( x 10, y 10)=(17.60350.08,99.40119.30)=(367.68mm,218.70 mm)

The coordinates of tenth hole in incremental programming is (367.68mm,218.70 mm).

Substitute 17.60 mm for x10, 99.40mm for y10, 77.60 mm for x11 and 150.00 mm for y11 in equation (22).

  ( x 11, y 11)=(77.60+17.60,150.00+99.40)=(60.00mm,50.60mm)

The coordinates of eleventh hole in incremental programming is (60.00mm,50.60mm).

Conclusion:

The coordinate of each hole is shown in below table:

    HoleX-coordinate (in mm)Y-coordinate (in mm)
    147.60  119.30
    217.6269.25
    3152.4882.57
    4100.0158.62
    5109.5735.60
    670.32201.10
    7  70.32  85.90
    849.0087.80
    967.00145.40
    10367.68218.70
    1160.0050.60

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