Helical Teeth Milled Gears-20Cr DIN10

Helical Teeth Milled Gears-20Cr DIN10" is a specific type of gear, which includes the gear structure, processing method, material and precision standard.

These gears are crafted from 20Cr steel. With a carbon content in the range of 0.18 - 0.24%, silicon at 0.17 - 0.37%, manganese at 0.50 - 0.80%, and chromium at 0.70 - 1.00%, 20Cr steel endows the gears with outstanding properties:

• High Strength: Exhibiting a tensile strength of 600 - 800MPa, the gears can endure substantial working loads. This high strength significantly reduces the risk of fracture during operation, ensuring smooth and stable performance even under high - load circumstances.
• Excellent Wear Resistance: The chromium in the steel effectively enhances its hardness and wear - resistance. After proper quenching and tempering, the gear hardness can reach HRC30 - 42. This high hardness minimizes tooth surface wear, thereby extending the service life of the helical teeth ground gears.
• Sufficient Toughness: The gears possess adequate toughness, allowing them to withstand a certain degree of impact load. This property ensures that the gears remain undamaged under impact and maintain reliable operation in complex working conditions.

Processing Process of Grinding Machines

The processing process of a grinding machine is a systematic procedure that gradually optimizes surface precision and quality through micro-cutting, grinding, or polishing of the workpiece surface using abrasives. It centers on "precise positioning, parameter control, and uniform processing," with specific steps as follows:

I. Pre-Processing Preparation Stage

1. Workpiece Pretreatment and Clamping

• Clean oil stains, burrs, or residual impurities on the workpiece surface to ensure no obvious defects on the surface to be processed;
• Select appropriate fixtures (such as vacuum chucks, mechanical clamps, or magnetic worktables) based on the workpiece material (metal, ceramic, glass, etc.) and shape (flat, cylindrical, special-shaped), and fix the workpiece on the worktable to ensure positioning accuracy (usually requiring a positioning error ≤ 0.001mm) and prevent loosening or shifting during processing.

2. Selection of Grinding Tools and Abrasives

• Choose grinding tools according to processing requirements (rough grinding, precision grinding, polishing): grinding wheels and grinding heads are commonly used for rough grinding, while grinding discs and wool wheels are often used for precision grinding/polishing;
• Match abrasive types: corundum and silicon carbide are commonly used for metal workpieces; diamond and cubic boron nitride (CBN) are used for high-hardness materials (ceramics, sapphires);
• Determine abrasive grain size: coarse grains (e.g., 80#-240#) are selected for rough grinding to quickly remove excess material, and fine grains (e.g., 400#-10000#) are used for precision grinding to reduce roughness (up to Ra 0.01μm or lower).

3. Equipment Parameter Debugging

• Set grinding pressure: adjust the pressure of the tool on the workpiece through a pressurizing device (usually 5-50N); excessive pressure may cause surface burns, while insufficient pressure leads to low efficiency;
• Adjust motion parameters: grinding tool rotation speed (hundreds to thousands of revolutions per minute) and workpiece feed rate (axial/radial feed amount) to ensure uniform cutting by abrasives;
• Prepare grinding fluid: configure cooling and lubricating fluid (containing rust inhibitors and lubricants) in proportion, and check the nozzle position to ensure sufficient cooling and smooth chip removal.

Testing Equipment

Slow walk silk

It refers to specialized testing equipment designed specifically for inspecting the precision, surface quality, and geometric parameters of workpieces machined by slow wire electrical discharge machining (EDM) machines. Through accurate measurement, it ensures that the dimensions, shape, and surface finish of the workpieces meet the design requirements.

EURO BLECH 2024

Booth No.：27-E158

One Of The Best Rack and Pinion Manufacturers In China

Kunshan Devotec Automation Co., Ltd. was established in 2012, but its origins trace back to an initial investment by the German company WMH HERION in Qingdao, Shandong Province in 2007. Since then, we have accumulated extensive experience in engineering, manufacturing, and quality control. As a specialist in drive technology, Kunshan Devotec Automation focuses on the production of high-precision gear racks, gears, pinions, gearboxes, linear guideways, and other linear transmission components.

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