Helical Teeth Ground Racks DIN6

DIN6 helical ground racks are corresponding to a medium-high precision level (total cumulative pitch error ≤0.036mm/m). This precision level balances cost-effectiveness and performance, making it widely adopted in industrial automation and CNC machinery.

Product Parameters

Quality	Teeth Treatment	Gear Standard	Pressure Angle	Right Helix Angle	Material	Heat Treatment
DIN6h25	Ground	DIN867	20°	19°31′42″	C45/ 42CrMo	Induction-hardened: HRC50-55/ HRC55-60

Key Dimensions

Tooth Profile Design:

Helix Angle: 19°31'42" (right-hand standard), enhancing meshing smoothness and load capacity (20% higher than spur racks).
Pressure Angle: 20°, optimizing force distribution between rack and pinion.
Surface Finish: Tooth surfaces undergo precision grinding to Ra≤0.8μm, reducing friction and noise.

FAQ

How to Ensure the Precision of DIN Class 6 Helical Ground Racks?

Material Selection and Treatment

High-Quality Material Selection
High-purity steel with uniform composition should be used, such as 45C medium carbon steel, SCM440 alloy steel, and S50C medium carbon steel. These materials possess excellent strength, toughness, and machinability, which can ensure the stability of the rack during processing and application.

Proper Heat Treatment
Appropriate heat treatment (e.g., quenching and tempering) should be applied to the material.
Processing Technology Control

High-Precision Processing Equipment
Advanced CNC processing equipment (e.g., CNC machine tools, high-precision gear grinding machines) should be adopted. These devices feature high-precision motion control and stable processing performance, enabling accurate control of the rack's dimensions and shape.

Fine Processing Technology
The manufacturing process involves multiple steps, including rough machining, semi-finishing, finishing, and grinding.

Strict Process Parameter Setting
Strict process parameters must be formulated and accurately set for each processing step, including tool selection, cutting speed, and feed rate, to ensure the stability and consistency of the processing process.
Quality Inspection and Control

Real-Time Measurement
During processing, precision measuring instruments (e.g., gear measuring instruments, coordinate measuring machines) are used to measure parameters .

Finished Product Inspection
Comprehensive inspections are conducted on finished racks before delivery, including precision testing, material performance testing, and appearance inspection.

Statistical Process Control
Methods such as Statistical Process Control (SPC) and Measurement System Analysis (MSA) are used to continuously monitor and evaluate the manufacturing process.

Application

DIN6 helical ground racks excel in scenarios requiring high precision, long strokes, and moderate loads. Such as CNC Machining Centers, Woodworking Equipment and etc.

Equipments

Main Production Equipment

The main equipment consisting of rack milling machines and grinding machines are imported from Germany.

The rack milling machine

Backlash-free drives with ball screws and the computer-calculated gearbox achieve the best results in terms of smooth running and gearing quality. The machine can work in synchronous rotation and counter-rotation.