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橢圓狀微織構(gòu)自潤(rùn)滑車刀切削性能試驗(yàn)
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國(guó)家自然科學(xué)基金資助項(xiàng)目(51075237);泰山學(xué)者專項(xiàng)基金資助項(xiàng)目;山東省自然科學(xué)基金重點(diǎn)項(xiàng)目(ZR2010EZ002);山東大學(xué)自主創(chuàng)新基金資助項(xiàng)目(2011JC001);高等學(xué)校博士學(xué)科點(diǎn)專項(xiàng)科研基金資助項(xiàng)目(20110131130002)


Cutting Performance of Self-lubricating Turning Tools with Elliptical Micro-textures
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    摘要:

    采用激光加工方法在硬質(zhì)合金刀具前刀面易磨損區(qū)域加工橢圓狀微織構(gòu),,并在微織構(gòu)中填充MoS2固體潤(rùn)滑劑,制備了微織構(gòu)自潤(rùn)滑刀具。運(yùn)用有限元方法分析了微織構(gòu)對(duì)刀具刀尖處應(yīng)力分布的影響,;將微織構(gòu)自潤(rùn)滑刀具與傳統(tǒng)刀具進(jìn)行了干切削45號(hào)鋼的對(duì)比試驗(yàn),。結(jié)果表明:微織構(gòu)的存在對(duì)刀尖處的應(yīng)力分布無(wú)顯著影響,,與傳統(tǒng)刀具相比,,微織構(gòu)自潤(rùn)滑刀具能夠有效降低切削力和切削溫度,,減小切屑變形,,增加切屑卷曲,,同時(shí)減緩刀具前刀面磨損。

    Abstract:

    Elliptical micro-textures were made by using laser on the rake face of the tungsten carbide cutting inserts. Molybdenum disulfide (MoS2) solid lubricants were embedded into the micro-textures to form self-lubricating textured tools. Finite element analysis was conducted to assess the effect of micro-texture on the stress distribution of the cutting inserts. Dry cutting tests were carried out with these self-lubricated cutting tools and conventional cemented carbide tools. As the results, there is no conspicuous adverse effect on the stress distribution of the tool nose with micro-textures on the rake face. The cutting forces and the cutting temperatures with the self-lubricating textured tools were greatly reduced compared with that of conventional cemented carbide tools. Meanwhile, the rake wear and the chip deformation were reduced, and the chip coiling was improved with micro texturing lubrication.

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吳澤,鄧建新,邢佑強(qiáng),程潔,趙軍.橢圓狀微織構(gòu)自潤(rùn)滑車刀切削性能試驗(yàn)[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2012,43(7):228-234. Wu Ze, Deng Jianxin, Xing Youqiang, Cheng Jie, Zhao Jun. Cutting Performance of Self-lubricating Turning Tools with Elliptical Micro-textures[J]. Transactions of the Chinese Society for Agricultural Machinery,2012,43(7):228-234.

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  • 在線發(fā)布日期: 2012-07-02
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