The utility model discloses a wear-resistant drill bit and its sleeve, which belongs to the technical field of mechanical cutting tools. The front part of the sleeve and the rear part of the sleeve are connected, the front part of the sleeve is connected with the rear part of the sleeve. The rear part of the sleeve is equipped with the slope surface of the rear part of the sleeve. The front part of the body and the rear part of the sleeve form the middle protrusion ring of the sleeve, and the front part of the body is provided with the knife body from the bottom of the sleeve to the front of the sleeve body. The matched aperture. A wear-resistant bit, which comprises a knife head, a knife body, a spring and a cushion, is located in the front end of the knife body, and the gasket is fixed on the rear section of the knife body through the spring, and also includes a wear-resistant bit sleeve which is fixed in the front section of the knife body. In view of the fast wear of the tool body of the existing road milling cutter, it can not match the service life of the cutter head, and then affects the whole service life of the tool. The utility model raises a wear-resistant bit sleeve in the front section of the cutter body to improve the wear resistance of the cutter body part.
【技术实现步骤摘要】
一种耐磨钻头及其套体
本专利技术属于机械刀具
,更具体地说,涉及一种耐磨钻头及其套体。
技术介绍
随着路面养护量的增加和对养护施工速度要求的提高,先进的路面养护技术不断被采用,沥青砼路面铣刨机具有路面养护作业高质量和高效率的显著特性。与以往的机具设备或人工进行同类作业比较,该设备具有施工周期短、作业效率高、工程质量好、施工操作灵活方便、降低施工人员劳动强度等显著特点。铣刨机械是一种用于去除路面材料的养护机械,高速旋转且布满刀具的铣削转子采用顺铣或逆铣的方式切除沥青、水泥等混凝土路面。由于路面材料成分复杂、硬度高,刀具的剧烈磨损使其成为消耗较为迅速的部件,显著增加了施工费用。在铣刨机械工作过程中,铣刨机械的刀具,尤其是刀头,与地面和废料产生剧烈摩擦,迅速磨损。同时由于作业状况恶劣或刀具安装位置特别,刀体和垫片也与路面材料直接接触,发生磨损。刀头材料一般采用硬质合金,硬度一般可达69~81HRC,而刀体采用的是合金钢,硬度在40~50HRC,刀头通过焊接在刀体上。在工作中,刀头的高耐磨性,使用寿命很长,但是刀体跟刀头相比,比较容易磨损,所以往往刀头还没损坏,而整个刀具就因刀体的磨损断裂而报废,造成资源的浪费。中国专利,公开号:CN201280681,公开日:2009年7月29日,该专利公开了一种WC涂层强化沥青砼路面铣刨刀具,刀具结构采用硬质合金刀头,合金结构钢刀体,刀体的加工制造采用模锻成形工艺保持完整锻造流线并经热处理获得高强度,刀头与刀体采用高强度钎焊连接,刀体外表面喷涂WC涂层提高其切削工作时表面耐磨性。该专利能够提高刀具整体的连接强度,延长刀具 ...
【技术保护点】
一种耐磨钻头套体,包括套体前部(201)和套体后部(204),其特征在于,套体前部(201)和套体后部(204)连接,套体前部(201)设有套体前部坡面(202),套体后部(204)设有套体后部坡面(205),套体前部(201)和套体后部(204)连接处形成套体中部突出圈(203),套体内从套体后部(204)底面至套体前部(201)内设有与刀体(3)的刀体前段(301)相匹配的孔径。
【技术特征摘要】
1.一种耐磨钻头套体,包括套体前部(201)和套体后部(204),其特征在于,套体前部(201)和套体后部(204)连接,套体前部(201)设有套体前部坡面(202),套体后部(204)设有套体后部坡面(205),套体前部(201)和套体后部(204)连接处形成套体中部突出圈(203),套体内从套体后部(204)底面至套体前部(201)内设有与刀体(3)的刀体前段(301)相匹配的孔径。2.根据权利要求1所述的一种耐磨钻头套体,其特征在于,套体的组成材料为金属基陶瓷复合材料。3.根据权利要求1或2所述的一种耐磨钻头套体,其特征在于,所述的刀体前段(301)位于刀体(3)的前端,刀体前段(301)通过钎焊与套体连接。4.根据权利要求1所述的一种耐磨钻头套体,其特征在于,套体前部坡面(202)的坡度小于套体后部坡面(205)的坡度。5.根据权利要求1所述的一种耐磨钻头套体,其...
【专利技术属性】
技术研发人员:王立斌,彭小军,王立明,
申请(专利权)人:马鞍山奥天机械科技有限公司,
类型:新型
国别省市:安徽,34
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