# Cam Design and Manufacturing Handbook Errata

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#### Errata in the Second Edition

Date

Chapter

Page

Description

02/04/10

5

108

In equation 5.53, the numerator of the fraction should be (c sub j – c sub j–1) and denominator should be (d sub j – d sub j–1). See PDF.

02/04/10

18

551

In Item 7, the ratio should be: Rho / |Rf | > 2 rather than that shown, which is the inverse. See PDF.

01/01/11

5

74-77

Numerous errors in equations 5.14 – 5.16 and Example 5-1 were reported by Mr. David Lockley of Great Britain. See PDF for corrections.

07/30/16

7

160-162

Figure 7-8 and description are improved

#### Errata in the First Edition

Date

Chapter

Page

Description

12/22/01

4

63

Example 4-4 rise-fall should be 45 deg rise and 135 deg fall

04/25/06

5

77

Spline function in equation (f) has an error – see new PDF file

02/04/10

5

90

In equation d, the last term should be: a6 * g (6, 3pi/4, theta) . The g is missing from that term.

02/04/10

5

90

In equation e, the first line should be: a1 * g”'(4, 0, 0). The last theta should be a zero.

02/04/10

5

90

In equation f, the coefficient of the last term in the third line should be: 0.2988 * a6 rather than 1.9025 * a6.

02/04/10

5

90

In equation f, the coefficient of the second-last term in the fifth line should be: 77.5157 * a5 rather than 71.5157 * a5.

02/04/10

5

90

In equation f, the coefficient of the second-last term in the sixth line should be: 148.0441 * a5 rather than 148.0440 * a5.

04/25/06

5

93

In the second paragraph beginning “Suppose it is desired … ” the phrase ” is between the fourth and fifth knots ” should read ” is between the third and fourth knots”. Eq 5.15a is wrong. See new PDF file.

04/25/06

5

94

In the last paragraph (Step 1) “We choose a fifth order spline” should be “We choose a sixth order spline”. (no PDF file is provided for this page)

04/25/06

5

103

Function lines are missing from Fig 5-21- see new PDF file

12/22/01

7

163

last line “q” should be theta – is in wrong font

04/25/06

7

168

First sentence in 3rd paragraph refers to the wrong figure; Change “The coordinates for the cam contour,… as shown in Figure 7-11, …” to “The coordinates for the cam contour, … as shown in Figure 7-1 (p. 153), …”

01/12/03

7

171

Added Equation 7.19b – see new PDF file

01/12/03

7

172

Changed equation 7.20 – see new PDF file

04/25/06

7

173

Eq 7.22 – omega_arm should be omega in 2nd term of numerator – see new PDF file

04/25/06

8

209

Eq (c) result should be 1.029 not 0.1029 – this affects Eqs (d) through (f) – see new PDF file

04/25/06

9

226

Eq 9.8 has error – see new PDF file

01/12/03

10

307

k1 and k2 values are reversed in the example specifications. Some values in example were off slightly. Added footnote. – see new PDF file

01/12/03

10

310

k1 and k2 values are reversed in the example specifications – see new PDF file

04/25/06

11

323

Some labels on axes of Figure 11-4 are wrong – see new PDF file

04/25/06

13

401

Eq 13.9 – b should be b’ – also in Eq 13.10 c and d – The sign convention for inner and outer is reversed as stated – see new PDF file

04/25/06

13

412

Eq 13.21a – add a sgn(omega) multiplier – see new PDF file

01/12/03

16

486

In eq 16.1 lower limit should read n = 1 not n – 1 – see new PDF file

12/22/01

App A

544

Figure A-6 is wrong image

12/22/01

App A

545

Figure A-7 is wrong image

12/22/01

App A

547

Figure A-8 is wrong image

12/22/01

App A

548

Figure A-9 is wrong image