Generation of Involute Gear Tooth Profile Manufacturer,Supplier and Exporter in India
Product Code : EL-TOMLE-10011
Jlab Export is a leading Generation of Involute Gear Tooth Profile Manufacturer,and suppliers in India
This board shows how a rack-type cutter generates involute gear teeth. Three white acrylic discs, marked A, B and C, have pitch circle diameters of 450, 300 and 200 mm. The tooth profile, of module 25 mm, is traced on a sheet of paper placed between the disc and the cutter.
Specifications
| Type | Demonstration board with rack-type cutter |
| Discs | 3 white acrylic discs, marked A, B and C |
| Pitch circle diameters | 450 mm, 300 mm and 200 mm |
| Module | 25 mm |
| Profile traced on | Paper placed between disc and cutter |
| Minimum order quantity | 1 unit |
| Dispatch time | Usually 14–18 working days |
| Manufacturer | JLab (Jain Laboratory Instruments Pvt Ltd), Ambala, India |
How the Involute Profile Is Generated
A gear-cutting rack has straight-sided teeth. When the pitch circle of the disc rolls along the pitch line of the rack without slipping, the straight rack flank sweeps out an involute on the blank. Students advance the disc and cutter a small step at a time and trace the rack outline after each step. The envelope of the traced lines is the involute tooth.
Practicals with the Gear Generation Board
In a theory of machines lab, students generate profiles on all three discs and compare them. The traces show how undercutting grows as the tooth count falls: the smaller the disc, the more of the flank near the root the rack tip cuts away. Students then look at the teeth of the Spur Gear Set to recognise the same involute shape on real gears. The Interference and Undercutting board then shows the fault in a working mesh.
Frequently Asked Questions
What is an involute gear tooth?
An involute is the curve traced by the end of a taut string unwound from a circle, called the base circle. Teeth with involute flanks keep a constant velocity ratio and still mesh correctly if the centre distance changes slightly, so most modern gears use this profile.
Why is a rack-type cutter used?
A rack is a gear of infinite radius, so its teeth have straight flanks that are simple to make. Rolled against a blank, the straight flank produces the correct involute for any number of teeth, so one cutter serves every gear of the same module.
What do the three discs show?
They have pitch circle diameters of 450, 300 and 200 mm and the same 25 mm module. Each disc therefore makes a gear with a different number of teeth. Comparing the traces shows how tooth shape and undercut change with gear size.
What causes undercutting?
Undercutting happens when a gear has too few teeth for its pressure angle. During generation the tip of the rack cutter reaches inside the base circle and cuts away part of the flank, which leaves the tooth weak at its root.
Other Gear Models and Apparatus
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Last updated: 6 November 2026
