Generation Of Involute Gear Tooth Profile

A machine-tool dynamometer is a multi-component dynamometer that is used to measure forces during the use of the machine tool. Empirical calculations of these forces can be cross-checked and verified experimentally using these machine tool dynamometers. (1) Milling Tool Dynamometers
(2) Grinder Tool Dynamometers
(3) Lathe Tool Dynamometers
(4) Drilling Tool Dynamometers

This set up is designed to study coriollis component of Acceleration of a slider crank Mechanism. The apparatus uses hydraulic analogy to represent the rotating slider. It consists of a rotating block with two arms in opposite direction. These tubes can be rotated at various speeds by using a swinging field motor, which also acts as a dynamometer to measure torque applied to rotating tubes. A Perspex window on top cover helps to visualize the process. Rotameter is used to measure water flow rate through tubes. Water is circulated by small monoblaock pump.

Specifications:

1.Main Tank with fiberglass lining. 2.Rotating Arms 9/6 mm dia, 300 mm long. 3.Motor – Swinging field, D.C., 0.5 HP. 4.Rotameter 5.Monoblock Pump 6.Control Panel comprising of – (i) Speed Control Unit. (ii) Speed Indicator. (iii) Necessary switches. 7.Rigid support frame.

Range of Experiment:

Coriollis Component of Acceleration can be determined at various speeds of rotation and water flow rates.

Service Required:

1.A.C. Single Phase .230 V. stabilized supply. 2.Floor Space -1.5 m X 1.5 m.

It is a motorized unit consisting of SUN gear mounted on input shaft. Two plane gears mesh with the annular gear. These planet gears are mounted on a common arm to which output shaft is fitted. Loading arrangement is provided for loading the system and to measure Holding Torque.

Specifications:

1. External type Epicyclic Gear Train: a. Bearing blocks for input & output shafts. b. A gear train with Holding drum and handle. 2. Internal Type Epicyclic Gear Train: a. A compact Gear Train. b. Variable speed D.C. Motor c. Rope brake arrangement to measure output torque and holding torque. 3 Control Panel comprising of a. Digital Ammeter and Voltmeter. b. RPM Indicator. c. Speed Controller.

Experimentation –

1. To measure epicyclical gear ratio between Input shaft and Output shaft. 2. To measure epicyclical gear ratio between Input shaft and holding drum. 3. To measure Input torque, Holding torque and Output torque.

Service Required –

1. Floor Space – about 1.5m x 2m. 2. 230 V.AC stabilized power supply.

The apparatus is designed to study the cam profiles and performance of cam and follower system. The apparatus consists of a shaft supported by ball bearings upon which three different types of cams can be mounted. The push rod for follower is supported vertically, which can adopt three different types of followers. Cams and followers can be changed easily. A variable speed motor rotates the cam. A dial gauge permits plotting of follower displacement with respect to cam position. By operating the system at different Speeds, jump speed can be found and also the effect of weight and spring force on jump speed can be studied. Jump can be visualized also with the help of stroboscope (it is not supplied With the product).

SPECIFICATIONS OF CAM ANALYSIS APPARATUS:

1.Cam -Eccentric, tangent and circular ARC type – one each. 2.Follower- mushroom, flat faced and roller type – one each. 3.Cams and followers are hardened to reduce wear of the surfaces. 4.Variable speed motor coupled to camshaft of suitable range and Variac. 5.A dial gauge to note the follower displacement. 6.A technical manual accompanies the equipment.

SERVICES REQUIRE FOR CAM ANALYSIS APPARATUS:

1.230 V, A.C. stabilized supply along with earthing connection. 2.Bench area 0.5m x 0.5m x 0.5m height. 3.Tachometer to measure the jumping speed, (can be supplied extra)