CN107859688A - 一种新型螺杆钻具用径向轴承及其生产工艺 - Google Patents
一种新型螺杆钻具用径向轴承及其生产工艺 Download PDFInfo
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Abstract
本发明公开了一种新型螺杆钻具用径向轴承,包括套装在一起的承静圈钢体和承动圈钢体,所述承动圈钢体的外圆周上缠绕并一体硫化有橡胶层,所述橡胶层的外部设置有若干条螺旋槽,所述螺旋槽设置在承静圈钢体和承动圈钢体之间。便于钻井液进入,起到润滑及降温的作用,本发明采用上述方案,用钢体、橡胶和镀铬代替硬质合金,替换了原有TC径向轴承,有效的降低了螺杆钻具使用和维护费用,而且通过实验数据对比,可以得出径向轴承环的硬度、抗拉强度、屈服强度、延伸率、冲击功等均可达到使用标准。
Description
技术领域
本发明涉及石油开采技术领域,具体的说是一种新型螺杆钻具用径向轴承,本发明还涉及径向轴承组成件的生产工艺。
背景技术
目前,螺杆钻具已经成为应用最广泛的井下动力工具,在石油钻井和修井获得了广泛应用,如图1所示主要由旁通阀总成A、马达总成B、万向轴总成C和传动轴总成D以及防掉总成E等组成。
其中,传动轴总成D中径向轴承是易损件中价格最高的,如图2、图3所示,该部分主要由壳体F、传动轴G、推力轴承组H、径向轴承组合J及其他辅助零件组成。
在螺杆钻具在使用到50-100小时完井后,传动轴总成将要进行拆解维护。其中径向轴承、推力轴承组将要更换。但径向轴承使用寿命还未达到最大值。为了降低螺杆钻具使用维护费用,因此,设计一种新型的相对耐磨损、耐冲击的螺杆钻具径向轴承。
发明内容
本发明要解决的技术问题是要解决径向轴承寿命过剩的问题,用钢体、橡胶和镀铬代替硬质合金,提供一种相对耐磨损、耐冲击的新型螺杆钻具用径向轴承。
为了解决上述问题,本发明采用以下技术方案:
一种新型螺杆钻具用径向轴承,包括套装在一起的承静圈钢体和承动圈钢体,所述承动圈钢体的外圆周上缠绕并一体硫化有橡胶层,所述橡胶层的外部设置有若干条螺旋槽,所述螺旋槽设置在承静圈钢体和承动圈钢体之间。便于钻井液进入,起到润滑及降温的作用。
以下是本发明对上述方案的进一步优化:所述橡胶层的外部用水布缠绕包覆。
进一步优化:所述承静圈钢体的内圆周上一体电镀有镀铬层,镀铬厚度≧0.3mm。
本发明还提供一种用于上述径向轴承的生产工艺,该工艺包括和承动圈钢体加工工艺。
所述承静圈钢体加工工艺包括以下步骤:
1)下料:将承静圈钢体用圆柱钢体下料成钢体胚体;
2)锻打:将钢体胚体进行热锻;
3)粗加工:在钢体胚体检验合格后进行粗加工;
4)钢体精加工;
5)表面处理:将承静圈钢体外圆进行保护,内孔电镀处理;
6)精加工:承静圈钢体内孔、外圆和端面进行精加工处理。
进一步优化:步骤2)中,热锻后的HB为220±0.5。
进一步优化:步骤6)中,内孔、外圆和端面的粗糙度达到1.6以上。
另一种优化:
所述承动圈钢体的加工工艺包括以下步骤:
1)下料:将承动圈钢体用圆柱钢体下料成钢体胚体;
2)锻打:将钢体胚体进行热锻;
3)粗加工:在钢体胚体检验合格后进行粗加工;
4)钢体精加工;
5)表面处理:将橡胶缠绕到承动圈钢体上,并用水布缠绕固定,再进行硫化处理;
6)精加工:用数控机床对硫化后的橡胶层加工出螺旋槽;
7)检验合格后,将承动圈钢体与承静圈钢体进行装配。
进一步优化: 步骤2)中,热锻后的HB为220±0.5。步骤6)中,内孔、外圆和端面的粗糙度达到1.6以上。
本发明采用上述方案,用钢体、橡胶和镀铬代替硬质合金,替换了原有TC径向轴承,有效的降低了螺杆钻具使用和维护费用,而且通过实验数据对比,可以得出径向轴承环的硬度、抗拉强度、屈服强度、延伸率、冲击功等均可达到使用标准。
下面结合附图和实施例对本发明作进一步说明。
附图说明
附图1是本发明背景技术中螺杆钻具的结构示意图;
附图2是本发明背景技术中传动轴结构示意图;
附图3是本发明背景技术中径向轴承组配合使用的结构示意图;
附图4是本发明实施例中径向轴承承动圈棍橡胶后的结构示意图;
附图4a是附图4的侧视图;
附图5a是本发明实施例中承静圈的结构示意图;
附图5b是附图5a的侧视图;
附图6a是本发明实施例中承动圈的结构示意图;
附图6b是附图6a的侧视图;
附图7a是本发明实施例中径向轴承装配后的组合示意图;
附图7b是附图7a的侧视图。
图中:1-承静圈钢体;2-镀铬层;3-水布;4-橡胶层;5-承动圈钢体;6-螺旋槽。
具体实施方式
实施例1,如图4-7b所示,一种新型螺杆钻具用径向轴承,包括套装在一起的承静圈钢体1和承动圈钢体5,所述承动圈钢体5的外圆周上缠绕并一体硫化有橡胶层4,所述橡胶层4的外部设置有若干条螺旋槽6,所述螺旋槽6设置在承静圈钢体1和承动圈钢体5之间,便于钻井液进入,起到润滑及降温的作用。
所述橡胶层4的外部用水布3缠绕包覆。
所述承静圈钢体1的内圆周上一体电镀有镀铬层2,镀铬厚度≧0.3mm。
本发明还提供一种用于生产上述径向轴承的生产工艺,该工艺包括以下步骤:该工艺包括承静圈钢体加工工艺和承动圈钢体加工工艺。
承静圈钢体加工工艺包括以下步骤:
1)下料:用圆柱钢体下料成钢体胚体。
2)锻打:将钢体胚体进行热锻,锻打设备用河南安阳产的560/KG空气锤,锻件表面应平整,不得有缺陷,不得有裂纹和翻皮,尺寸公差在±2mm范围内,保证平面度和垂直度,HB为220左右。
3)粗加工:在钢体胚体检验合格后进行粗加工,粗加工用普通车床粗车,粗车根据图纸要求,所有加工尺寸必须保证图纸的要求范围内,检验员根据图纸进行检验。
4)钢体精加工:用数控车床CAK6360精车,精车加工完检验员按照图纸逐项检验,检验合格进入下一工序;
5)镀铬:将钢体外圆进行保护,内孔电镀处理, 镀铬厚度大于等于0.3mm;
6)精加工:用内圆磨床进行内孔的精磨,精磨床是M2120A精度高,精磨完内孔,进行外圆精磨,用M131W外圆磨床精磨外圆,最后进行端面加工,使用杭州平面磨床进行端面加工,内孔、外圆和端面的粗糙度要求达到1.6以上。
承动圈钢体加工工艺包括以下步骤:
1)下料:用圆柱钢体下料成钢体胚体。
2)锻打:将钢体胚体进行热锻,锻打设备用河南安阳产的560/KG空气锤,锻件表面应平整,不得有缺陷,不得有裂纹和翻皮,尺寸公差在±2mm范围内,保证平面度和垂直度,HB为220左右。
3)粗加工:在钢体胚体检验合格后进行粗加工,粗加工用普通车床粗车,粗车根据图纸要求,所有加工尺寸必须保证图纸的要求范围内,检验员根据图纸进行检验。
4)钢体精加工:用数控车床CAK6360精车,精车加工完检验员按照图纸逐项检验,检验合格进入下一工序;
5)硫化橡胶:用JGCR-1500-1000胶辊缠绕设备将橡胶缠绕到钢体上(不得有气孔),并用水布缠绕固定(如图4),再用用SB-ZTD硫化罐进行硫化处理。
6)铣螺旋槽:用友佳VMP-45A数控加工中心进行螺旋槽加工;
7)精加工:用内圆磨床进行内孔的精磨,精磨床是M2120A精度高,精磨完内孔,进行外圆精磨,用M131W外圆磨床精磨外圆,最后进行端面加工,使用杭州平面磨床进行端面加工,内孔、外圆和端面的粗糙度要求达到1.6以上。
8)检验:检验科严格按照图纸从下料-锻件-粗加工-钢体精加工-镀铬(硫化橡胶)-精加工每一道工序都进行认真的检验,每一道工序有相应专用量具,如三座标、硬度计等。
9)入库:产品必须达到图纸的技术要求,几何尺寸到达图纸的对应尺寸,这样,车间才可入库。
将通过本工艺加工的轴承进行各项检测,其实验数据如下:
通过上述实验数据对比,可以得出径向轴承环的硬度、抗拉强度、屈服强度、延伸率、冲击功等参数符合设计要求。
本发明代替原有TC径向轴承,有效的降低了螺杆钻具使用和维护费用。
Claims (10)
1.一种新型螺杆钻具用径向轴承,包括套装在一起的承静圈钢体(1)和承动圈钢体(5),其特征在于:所述承动圈钢体(5)的外圆周上缠绕并一体硫化有橡胶层(4),所述橡胶层(4)的外部设置有若干条螺旋槽(6),所述螺旋槽(6)设置在承静圈钢体(1)和承动圈钢体(5)之间。
2.根据权利要求1所述的一种新型螺杆钻具用径向轴承,其特征在于:
所述橡胶层(4)的外部用水布(3)缠绕包覆。
3.根据权利要求1所述的一种新型螺杆钻具用径向轴承,其特征在于:
所述承静圈钢体(1)的内圆周上一体电镀有镀铬层(2),镀铬厚度≧0.3mm。
4.一种用于生产权利要求1-3任一所述的径向轴承的生产工艺,其特征在于:该工艺包括承静圈钢体(1)加工工艺和承动圈钢体(5)加工工艺。
5.根据权利要求4所述的径向轴承的生产工艺,其特征在于:所述承静圈钢体(1)加工工艺包括以下步骤:
1)下料:将承静圈钢体(1)用圆柱钢体下料成钢体胚体;
2)锻打:将钢体胚体进行热锻;
3)粗加工:在钢体胚体检验合格后进行粗加工;
4)钢体精加工;
5)表面处理:将承静圈钢体(1)外圆进行保护,内孔电镀处理;
6)精加工:承静圈钢体(1)内孔、外圆和端面进行精加工处理。
6.根据权利要求5所述的径向轴承的生产工艺,其特征在于: 步骤2)中,
热锻后的HB为220±0.5。
7.根据权利要求5所述的径向轴承的生产工艺,其特征在于:步骤6)中,
内孔、外圆和端面的粗糙度达到1.6以上。
8.根据权利要求4所述的径向轴承的生产工艺,其特征在于:所述承动圈钢体(5)的加工工艺包括以下步骤:
1)下料:将承动圈钢体(5)用圆柱钢体下料成钢体胚体;
2)锻打:将钢体胚体进行热锻;
3)粗加工:在钢体胚体检验合格后进行粗加工;
4)钢体精加工;
5)表面处理:将橡胶缠绕到承动圈钢体上,并用水布缠绕固定,再进行硫化处理;
6)精加工:用数控机床对硫化后的橡胶层加工出螺旋槽;
7)检验合格后,将承动圈钢体与承静圈钢体进行装配。
9.根据权利要求8所述的径向轴承的生产工艺,其特征在于: 步骤2)中,热锻后的HB为220±0.5。
10.根据权利要求8所述的径向轴承的生产工艺,其特征在于:步骤6)中,内孔、外圆和端面的粗糙度达到1.6以上。
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