砂轮动平衡值对磨削后工件表面粗糙度的影响

磨削是一种复杂的机械加工工艺. 安装在主轴上的砂轮的动平衡水平对工件的成品表面光洁度有显着影响. We carried out a targeted test to intuitively analyze how grinding wheel dynamic balance affects workpiece surface roughness.

砂轮动平衡值对磨削后工件表面粗糙度的影响

Test Configuration

• Machine Tool: Horizontal Spindle Rotary Table Surface Grinder
• Grinding Wheel: 14A1 350×127×10×30×40T, 80 grit CBN grinding wheel
• Workpiece: Heat-treated steel plate with outer diameter Φ350, material grade 75Cr1

Grinding Process Parameters

• Spindle rotational speed: 1800 RPM
• Infeed mode: 0.005 mm infeed on each side
• Rough grinding feed rate setting: 10
• Finish grinding feed rate setting: 7
• Each workpiece undergoes 50 rough grinding passes followed by 4 finish grinding passes, then surface roughness is measured

Inspection Instruments

• Zheda portable online dynamic balancer
• Mitutoyo surface roughness tester

Test Results

1. When dynamic balance vibration amplitude = 0.35 mm/s, post-grinding workpiece roughness Ra = 0.806
2. When dynamic balance vibration amplitude = 0.04 mm/s, post-grinding workpiece roughness Ra = 0.607