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Tooth Profile Component – Machinery and Equipment Manufacturing

Component Specifications

Definition

The tooth profile on a flexspline is a precisely machined geometric pattern that engages with the circular spline in a harmonic drive system. This elliptical deformation creates a controlled meshing action that enables high-ratio speed reduction, exceptional positional accuracy, and zero-backlash torque transmission through elastic deformation mechanics.

Working Principle

The flexspline's elliptical deformation causes its teeth to engage progressively with the circular spline's teeth, creating a wave generator-induced motion that results in speed reduction ratios typically between 30:1 and 320:1 with minimal backlash.

Materials

High-strength alloy steel (AISI 4340, 4140), stainless steel (17-4PH), or specialized alloys with surface treatments (nitriding, carburizing) for wear resistance and fatigue strength.

Technical Parameters

Module 0.2-2.0 mm
Hardness 58-62 HRC
Tooth Count 100-300 teeth
Pressure Angle 20°-30°
Surface Finish Ra 0.4-1.6 μm
Profile Accuracy ISO 1328 Class 4-6

Standards

ISO 1328, DIN 3960, AGMA 2000

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Tooth Profile.

Parent Products

This component is used in the following industrial products

Flexspline

A thin-walled, flexible cup-shaped component in a harmonic drive that deforms elastically to transmit torque through wave generator engagement.

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Engineering Analysis

Risks & Mitigation

Fatigue failure from cyclic deformation
Wear from improper lubrication
Tooth chipping from shock loads
Backlash increase from profile wear

FMEA Triads

Trigger: Insufficient material fatigue strength
Failure: Tooth root cracking under cyclic loading
Mitigation: Use high-cycle fatigue alloys with proper heat treatment and surface hardening

Trigger: Improper profile geometry
Failure: Uneven load distribution and premature wear
Mitigation: Precision machining with profile verification and tooth contact pattern analysis

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance

±0.005 mm profile deviation, ±0.01° pressure angle

Test Method

Coordinate measuring machine (CMM) verification, tooth contact pattern analysis, backlash measurement under load

Buyer Feedback

★★★★☆ 4.9 / 5.0 (37 reviews)

"Found 27+ suppliers for Tooth Profile on CNFX, but this spec remains the most cost-effective."

"The technical documentation for this Tooth Profile is very thorough, especially regarding technical reliability."

"Reliable performance in harsh Machinery and Equipment Manufacturing environments. No issues with the Tooth Profile so far."

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Frequently Asked Questions

What makes flexspline tooth profiles different from conventional gears?

Flexspline teeth are designed for elastic deformation and progressive engagement, enabling zero-backlash operation through elliptical deformation rather than rigid meshing like conventional gears.

How does tooth profile affect harmonic drive performance?

Profile accuracy directly impacts positional accuracy, torque capacity, and service life. Optimized profiles minimize stress concentration and ensure smooth engagement across the deformation cycle.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

Tooth Profile