硬质合金多齿皮带轮刀具的研究
发布时间：2018-08-08 19:14
【摘要】：皮带轮作为带传动的重要部件,广泛应用于汽车、矿山机械、家用电器、航天等领域。随着市场需求量的增大,现有加工效率使企业难以按时按质完成订单量。一款适合的刀具能有效提高皮带轮的加工效率和质量。但常用的刀具很难兼顾效率、质量和成本三个方面。为解决加工效率、加工质量和成本的问题,本文根据马丁公司旗下的皮带轮零件的加工要求开展一种能高效切削铸铁皮带轮切槽的专用刀具研究。研究内容包括提出硬质合金多齿皮带轮刀具的研究、皮带轮切削机理的分析、刀具的设计和制备、刀具的材料和结构改进等。主要体现在以下几个方面:(1)首先,阐述了皮带轮的加工现状,提出硬质合金双齿皮带轮刀具的研究,能有效提高加工效率。其次,分析了皮带轮加工过程中的切削机理和切削力的来源,根据刀具设计理论和皮带轮零件的技术要求初步设计和制备皮带轮刀具。(2)研究了切削速度对切削温度的影响,并选定了加工皮带轮时的切削参数。首先,基于DEFORM软件的切削模拟,分析了不同切削速度下切削温度的变化。其次,在不同切削速度下的切削试验中测出切削温度和切削力的变化,通过有限元分析和切削试验的对比选出适合加工的切削速度为150m/min。(3)开展了刀具材料影响切削性能的研究,并改进刀具材料。通过DEFORM模拟仿真和部分实验数据探究了刀具材料机械性能对加工质量和刀具使用寿命的影响,为刀具材料的改进提供理论依据。(4)开展了不同刀具结构下切削性能的研究,并改进刀具结构。首先,利用仿真手段分析了不同切削参数下的切削温度和切削力和不同切削参数下切削试验所得切屑形态的变化情况,提出了刀具参数的改进方案。其次,对比切削参数改进后的刀具在不同刀具结构下加工过程中切屑形态和刀具受到的切削力的变化情况验证了刀具机构改进后的切削性能。(5)开展了对改进后的刀具与国内外同类刀具切削试验的研究,重点分析了切削过程中刀具的使用寿命和市场价格。得出改进后刀具的性价比较高。
[Abstract]:As an important part of belt transmission, pulley is widely used in automotive, mining machinery, household appliances, aerospace and other fields. With the increase of market demand, existing processing efficiency makes it difficult for enterprises to complete orders on time and quality. A suitable tool can effectively improve the efficiency and quality of the pulley. However, it is difficult for common cutting tools to take into account three aspects: efficiency, quality and cost. In order to solve the problems of machining efficiency, machining quality and cost, according to the requirements of Martin Corporation, a special tool which can cut the slot of cast iron pulley with high efficiency is developed in this paper. The research contents include the research of cemented carbide multi-tooth pulley cutting tool, the analysis of pulley cutting mechanism, the design and preparation of cutting tool, the improvement of tool material and structure, etc. The main contents are as follows: (1) at first, the present situation of pulley machining is expounded, and the research of cemented carbide double-tooth pulley tool is put forward, which can effectively improve the machining efficiency. Secondly, the cutting mechanism and the source of cutting force are analyzed. According to the tool design theory and the technical requirements of pulley parts, the pulley cutting tools are designed and fabricated. (2) the influence of cutting speed on cutting temperature is studied. The cutting parameters of the pulley are selected. Firstly, based on the cutting simulation of DEFORM software, the change of cutting temperature under different cutting speed is analyzed. Secondly, the change of cutting temperature and cutting force is measured in the cutting test at different cutting speeds. The cutting speed suitable for machining is 150 m / min through finite element analysis and cutting test. (3) the influence of cutting tool material on cutting performance is studied. And the tool material is improved. Through DEFORM simulation and some experimental data, the influence of mechanical properties of cutting tools on machining quality and tool service life is explored, which provides a theoretical basis for the improvement of tool materials. (4) the research on cutting performance under different tool structures is carried out. The tool structure is improved. Firstly, the change of cutting temperature and cutting force under different cutting parameters and chip shape under different cutting parameters are analyzed by means of simulation, and the improvement scheme of tool parameters is put forward. Secondly, The change of chip shape and cutting force in the process of machining with improved cutting parameters under different cutting tool structures is compared to verify the cutting performance of the improved tool mechanism. (5) the improved cutting tool and the improved cutting tool are compared. (5) the improved cutting tool and the cutting force are compared. (5) the improved cutting tool and the improved cutting tool are compared with each other. Research on cutting experiments of similar cutting tools at home and abroad, The service life and market price of cutting tools are analyzed. It is concluded that the performance-price ratio of the improved tool is higher.
【学位授予单位】：西华大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TG71
本文编号：2172782
[Abstract]:As an important part of belt transmission, pulley is widely used in automotive, mining machinery, household appliances, aerospace and other fields. With the increase of market demand, existing processing efficiency makes it difficult for enterprises to complete orders on time and quality. A suitable tool can effectively improve the efficiency and quality of the pulley. However, it is difficult for common cutting tools to take into account three aspects: efficiency, quality and cost. In order to solve the problems of machining efficiency, machining quality and cost, according to the requirements of Martin Corporation, a special tool which can cut the slot of cast iron pulley with high efficiency is developed in this paper. The research contents include the research of cemented carbide multi-tooth pulley cutting tool, the analysis of pulley cutting mechanism, the design and preparation of cutting tool, the improvement of tool material and structure, etc. The main contents are as follows: (1) at first, the present situation of pulley machining is expounded, and the research of cemented carbide double-tooth pulley tool is put forward, which can effectively improve the machining efficiency. Secondly, the cutting mechanism and the source of cutting force are analyzed. According to the tool design theory and the technical requirements of pulley parts, the pulley cutting tools are designed and fabricated. (2) the influence of cutting speed on cutting temperature is studied. The cutting parameters of the pulley are selected. Firstly, based on the cutting simulation of DEFORM software, the change of cutting temperature under different cutting speed is analyzed. Secondly, the change of cutting temperature and cutting force is measured in the cutting test at different cutting speeds. The cutting speed suitable for machining is 150 m / min through finite element analysis and cutting test. (3) the influence of cutting tool material on cutting performance is studied. And the tool material is improved. Through DEFORM simulation and some experimental data, the influence of mechanical properties of cutting tools on machining quality and tool service life is explored, which provides a theoretical basis for the improvement of tool materials. (4) the research on cutting performance under different tool structures is carried out. The tool structure is improved. Firstly, the change of cutting temperature and cutting force under different cutting parameters and chip shape under different cutting parameters are analyzed by means of simulation, and the improvement scheme of tool parameters is put forward. Secondly, The change of chip shape and cutting force in the process of machining with improved cutting parameters under different cutting tool structures is compared to verify the cutting performance of the improved tool mechanism. (5) the improved cutting tool and the improved cutting tool are compared. (5) the improved cutting tool and the cutting force are compared. (5) the improved cutting tool and the improved cutting tool are compared with each other. Research on cutting experiments of similar cutting tools at home and abroad, The service life and market price of cutting tools are analyzed. It is concluded that the performance-price ratio of the improved tool is higher.
【学位授予单位】：西华大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TG71
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