THEORY OF MACHINES
GENERAL DESCRIPTION

Each mechanism below is designed with appropriate proportions for studying simple relative motion between two or more links of the mechanism with all motions in horizontal planes. For accurate relative motion, ball bearings are used for most rotating pairs.Scales are provided for measurement of crank and end member motion. Software for data display and analysis is supplied for selected experiments. Instruction manual is also included.

The mechanism is supplied with an instruction manual showing a skeleton outline, relative motion and test procedures for each mechanism. The typical tests relative motion data and sample graphs of relative motion, velocity and acceleration by graphical differentiation are also provided.

Optional accessories for computer interface of the motion are available (see MM200)

OPTIONAL EQUIPMENT
Part No. Part Name
MM 211H

SLIDER CRANK

This mechanism demonstrates relative motion between a crank rotation in degrees and a slider translation in millimeters. Software for data display and analysis by computer (separately supplied).

Net dimensions WxLxH : 15x30x9 cm
Net weight : Approx. 1.0 kg

MM 212H

FOUR BAR LINKAGE

This mechanism demonstrates relative motion between a crank rotation in degrees and another link oscillation (swinging) also in degrees. Software for data display and analysis by computer (separately supplied).

Net dimensions WxLxH : 20x30x9 cm
Net weight : Approx. 1.2 kg

MM 213H

SLOTTED LINK

This mechanism demonstrates relative motion between a crank rotation in degrees and a slider translation in millimeters through another oscillating link resulting in quick return for slider motions. Software for data display and analysis by computer (separately supplied).

Net dimensions WxLxH : 20x40x9 cm
Net weight : Approx. 1.5 kg

MM 214H

WHITWORTH QUICK RETURN

This mechanism demonstrates relative motion between a crank rotation in degrees and a slider translation in millimeters through another offset rotating member resulting in quick return for slider motion. Software for data display and analysis by computer (separately supplied).

Net dimensions WxLxH : 20x40x10 cm
Net weight : Approx. 1.5 kg

MM 215H

SCOTCH YOKE

This mechanism demonstrates relative motion between a crank rotation in degrees and a yoke translation in millimeters. Software for data display and analysis by computer (separately supplied).

Net dimensions WxLxH : 15x30x9 cm
Net weight : Approx. 1.2 kg

MM 216H

OLDHAM COUPLING

This mechanism demonstrates relative angular motion in degrees between two shafts with parallel
but displaced axes.

Net dimensions WxLxH : 15x27x9 cm
Net weight : Approx. 1.1 kg

MM 217

HOOKE’S UNIVERSAL JOINT

This mechanism demonstrates relative angular motion in degrees between two intersecting shafts through a cross-member such as found in the rear drive shaft of an automobile. The angle between
input and output shafts is adjustable and indicated on an angular scale. Software for data display and analysis by computer (separately supplied).

Optional: Double Hooke’s Universal Joint.

Net dimensions WxLxH : 16x32x20 cm

MM 218

CONSTANT VELOCITY JOINT

This mechanism demonstrates relative angular motion in degrees between two intersecting shafts through shifting balls such as found in front drive shaft of an automobile. The angle between input and output shafts is adjustable and indicated on an angular scale.

Net dimensions WxLxH : 16x32x22 cm
Net weight : Approx. 5 kg

MM 219H

GENEVA STOP

This mechanism demonstrates relative angular motion in degrees between two parallel shafts – one with continuous rotation the other with intermittent rotation.

Net dimensions WxLxH : 15x27x9 cm
Net weight : Approx. 0.9 kg

MM 220H

CAM AND FOLLOWER

This mechanism demonstrates relative motion between a rotating eccentric member (cam) in degrees and a sliding member (follower) translation in millimeters such as found in internal combustion engine. The follower can be flat face or roller type. Software for data display and analysis by computer (separately supplied).

Net dimensions WxLxH : 15x30x9 cm
Net weight : Approx. 1.1 kg

MM 221

EPICYCLIC GEAR TRAIN

This mechanism demonstrates relative angular motion in degrees between two shafts with common axis using sun and planetary gears to produce a forward speed.

Net dimensions WxLxH : 22x30x20 cm
Net weight : Approx. 6 kg

MM 222

DOUBLE EPICYCLIC GEAR TRAIN

This mechanism demonstrates relative angular motion in degrees between three shafts with common axis using two epicyclic trains to produce two forward speeds or a forward and a reverse.

Net dimensions WxLxH : 25x42x25 cm
Net weight : Approx. 11 kg

MM 223

TRIPLE EPICYCLIC GEAR TRAIN

This mechanism demonstrates relative angular motion in degrees between four shafts with common axis using three epicyclic trains to produce two forward speeds and a reverse.

Net dimensions WxLxH : 26x42x25 cm
Net weight : Approx. 15 kg

MM 312

TORSIONAL OSCILLATIONS APPARATUS

This mechanism demonstrates torsional oscillations of single or multi-rotor and /or geared systems with low natural frequencies. Software for data display and analysis . by computer (separately supplied).

Net dimensions WxLxH : 35x82x30
Net weight : Approx. 32 kg

Software for data display and analysis by computer (separately supplied).

 

OPTIONAL ACCESSORIES

Part No. Part Name
MM 200-050

Computer Interface

Sensors with computer interface unit for data acquisition instead of analog data measuring instruments. This includes computer interface unit with sensors for data display and analysis of mechanism motion on computer (separately supplied).