robotics Designing the Mechanisms for Automated Machinery Part 5 pdf

... is presented. The thicker line shows the calculated curve, while the thin line shows the real data for the acceleration of the follower. Obviously, the higher the rotational speed of the ... known to the designer, together with the means to reduce the harm these restrictions cause. The main restriction is the pressure angle. This is the ang...

Ngày tải lên: 10/08/2014, 02:21

... addition, the force F rotates the roller with moment of inertia /. Therefore, the equilibrium equation of forces takes the form where a = the linear acceleration of the weight ... sections of the magnetic circuit, the pulling force developed by the magnet, the influence of the air gap, and the speed of motion of the armature. The initial...

Ngày tải lên: 10/08/2014, 02:21

... the AD (damping takes about 10 sec). force is applied to the mass M. Obviously, the bigger the mass of the armature 4, the bigger the force. The core 4 is fastened to the ... excitation force is applied, i.e., P = 0. For this case the equations for the mass movements are The solutions are in the form To find the natural frequencies...

Ngày tải lên: 10/08/2014, 02:21

... the partition protects the operator sitting on the manual side of the device from the harmful environment of the working zone. The serving arm in the working zone duplicates the ... length of the arc where the product is handled for the n-th rotor, r n = the radius of the «-th rotor, and (f) n - the angle of the arc of the n-th rotor...

Ngày tải lên: 10/08/2014, 02:21

... will influence the quality of the sheet: the smaller the rollers and the smaller the intervals between them, the smaller the deflection of the sheet. From the idea of reducing the size ... during 15 of the period, it decreases to 0 and the rollers remain immobile for the rest of the period. The cutter carries out the fast cutting move...

Ngày tải lên: 10/08/2014, 02:21

... m away. The initial position of the piston 1 = 0.1 m. The mass of the elevator handles m = 400 kg for case a), and m = 55 0 kg for case b). The stroke s max is about 1 .5 m. Other pertinent ... by torque T r = 5 Nm. The stiffness of the spring c - 50 0 N/m. The drum was initially rotated for one revolution, stretching the spring; thereafte...

Ngày tải lên: 10/08/2014, 02:21

... there if the gap between this gauge 4 and the partition wall 3 is smaller than the part. In this case pusher 1 lifts the part to the upper lever, where the part rolls to the ... Figures 5. 35- 5.37, the force affects an elastic element and is balanced by the elasticity of the system via either a special spring or the membrane itself....

Ngày tải lên: 10/08/2014, 02:21

... from the flow of parts on the tray. The design of these devices depends, of course, on the shape of the part they must handle. The rough estimation of the moving time along the ... 7 .5 Feeding of Parts from Bins 253 2. For kinematic excitation, the value of the amplitude stays constant and there- fore, to change the value of S, one m...

Ngày tải lên: 10/08/2014, 02:21

... certain rotating speed for the drill and also the torque required for cutting the material. An axial force must also be developed for feeding the drill. Thus, the device consists ... conditions for the penetration of pin 2 into the hole of part 1 are improved. Of course, the amplitude of vibration, the speed of relative displacement betw...

Ngày tải lên: 10/08/2014, 02:21

... located on the base and transmissions transferring the motion to the corresponding links. them. To calculate the coordinates of point A (the gripper or the part the manipulator deals ... the drives are actuated; • The power or force that every drive develops depends on the place it occupies in the kinematic chain of the device. The closer...

Ngày tải lên: 10/08/2014, 02:21