DESIGN OF MACHINERYAN INTRODUCTION TO THE SYNTHESIS AND ANALYSIS OF MECHANISMS AND MACHINES phần 10 docx

... on it to the product to the next work station where it again stops for another operation to be per- the Atheneum Club in formed. The forces and power required to accelerate and decelerate the large ... suit- ed to the problem and is a form of qualitative synthesis. t This is perhaps the most diffi- cult task for the student as it requires some experience an...

Ngày tải lên: 08/08/2014, 12:23

... respectively) on the coupler (link 3). We wish to solve for the coordinates of vectors W, Z, D, and S, which define not only the lengths of those links but also the locations of the fixed pivots Oz and 04 in ... using the approach of equations 5.27 and 5.18, by changing W to U and Z to S and using the definitions of the constants given in equation 5.3...

Ngày tải lên: 08/08/2014, 13:20

... the axis of slip is shown to be tangent to the slider motion and is the line along which all sliding occurs between links 3 and 4. The axis of transmission is defined to be perpendicular to the ... 2 is the driver, and 8z and OOz are given for the "freeze frame" position shown. We wish to solve for 004, the angular velocity of link 4, and al...

Ngày tải lên: 08/08/2014, 13:20

... the next step is to size the cam. There are two major factors which affect cam size, the pressure angle and the radius of curva- ture. Both of these involve either the base circle radius on the ... of value to the man- ufacturer of the earn who needs its coordinate information in order to cut the earn. FALL FUNCTIONS We have used only the rise portion of...

Ngày tải lên: 08/08/2014, 13:20

... any design prob- lem, we lack sufficient information at this stage of the design to accurately determine the best sizes and shapes of the parts. We must estimate the masses of the links and other parts ... softball with the wrong spot on the bat. The "right place on the bat" to hit the ball is the center of percussion associated with the p...

Ngày tải lên: 08/08/2014, 13:20

... us to size the motor to deliver the average torque rather than the peak torque. One convenient and rel- atively inexpensive means to this end is the addition of a flywheel to the system. TORQUE ... the driver (motor) and stored temporarily in the moving links, and the negative pulses of torque as energy at- tempting to return from the links to the dri...

Ngày tải lên: 08/08/2014, 13:20

... us to size the motor to deliver the average torque rather than the peak torque. One convenient and rel- atively inexpensive means to this end is the addition of a flywheel to the system. TORQUE ... the driver (motor) and stored temporarily in the moving links, and the negative pulses of torque as energy at- tempting to return from the links to the dri...

Ngày tải lên: 08/08/2014, 13:20

... the program. These are noted in the text. The student is encouraged to investigate these ex- amples with program ENGINE in order to develop an understanding of and insight to the subtleties of this topic. ... the length of the balance shafts/crank- shaft being designed. The magnitude and angular locations of the balance masses can then be calculated by the...

Ngày tải lên: 08/08/2014, 13:20

... 4 to 10, and 11 of this textbook. Please consult them for explanations of the theory and mathematics involved. The Slider Home Screen Initially, only the Input and Quit buttons are active on the ... as the magnitude and angle of the vector are displayed. The programs also allow alternate presentations of polar plots, showing just the vec- tors, just the en...

Ngày tải lên: 08/08/2014, 13:20

... experience and the relationship between mental and physical states. Then, in chapters 3 and 4, I move on to discuss certain gen- eral theories of the nature of mental states and some attempts to explain ... philosophical analysis of the concept of seeing: but each will have more credibility to the extent that it is consistent with the other. METAPHYSICS AND...

Ngày tải lên: 01/11/2013, 07:20