Mist-jetting Electrical Discharge Dressing Technology for Superabrasive Grinding Wheels

• 作 者: 蔡兰蓉 胡德金 贾妍
• 机 构: School of Mechanical and Power Engineering,Shanghai Jiaotong University,Shanghai 200030,China,
• 出 处: Journal of Shanghai Jiaotong University(Science)
• 发表日期: 2008年06期
• 关键词: dressing diamond wheel favorable bronze extremely brittle bonded dielectric spar

The technology of superabrasive grinding has been developed in order to achieve high-quality finish in extremely hard and brittle materials.Thereafter, truing and dressing technology on super abrasive grinding wheel is one of the most important subjects on precise machining field at present.In this paper, mist-jetting electrical discharge technology was applied to dressing metal-bonded superabrasive wheels.And a systematical study on the mechanism of selective removal of the bond was proposed.Experiments on dressing bronze bonded diamond grind wheels were carried out on a die-sinking electrical discharge machine.The diamond wheel topographies before and after electrical discharge dressing were observed by VH-800 3D digital microscope.The wheel profiles before and after dressing were observed.The results of electrical discharge dressing under different electrical parameters were compared.Experimental results indicate that the favorable surface topography can be obtained under suitable processing parameters and mist-jetting electrical discharge dressing(MEDD) is feasible for metal-bonded diamond grinding wheel.

The technology of superabrasive grinding has been developed in order to achieve high-quality finish in extremely hard and brittle materials. Afterafter, truing and dressing technology on super abrasive grinding wheel is one of the most important subjects on precise machining field at present. This paper, mist-jetting electrical discharge technology was applied to dressing metal-bonded superabrasive wheels. And a systematical study on the mechanism of selective removal of the bond was proposed. Experiments on dressing bronze bonded diamond grind wheels were carried out on a die-sinking electrical discharge machine. The diamond wheel topographies before and after electrical discharge dressing were observed by VH-800 3D digital microscope. The wheel profiles before and after dressing were observed. The results of electrical discharge dressing under different electrical parameters were compared. that the favorable surface topography can be obtained under suitable p rocessing parameters and mist-jetting electrical discharge dressing (MEDD) is feasible for metal-bonded diamond grinding wheel.