耐磨型调整螺钉和挺杆制造技术

本实用新型专利技术公开了一种耐磨型的气门调整螺钉和挺杆组成的摩擦副。调整螺钉球头的前端为一小平台，前端小平台直径2.1mm。球头的圆弧半径为4.5mm；挺杆凹窝的圆弧半径为4.75mm。挺杆凹窝的深度h为5.6mm，在挺杆凹窝的下底中心设有油窝，油窝半径R1为1mm。通过改进球头和凹窝的配合形式，使加工工艺简化，增加了耐磨性。为了验证效果，将本实用新型专利技术与目前使用的调整螺钉和挺杆分别装入发动机中进行1000小时的试验，然后拆检对调整螺钉的球头进行检测。检测数据表明：耐磨型调整螺钉和挺杆的摩擦副，耐磨量明显提高，其磨损量为0.005和0.002。而原调整螺钉和挺杆的磨损量是0.019和0.023。（*该技术在2021年保护过期，可自由使用*）

Wear resistant adjusting screw and tappet

The utility model discloses a friction pair composed of an abrasion proof valve adjusting screw and a tappet. The front end of the adjusting screw ball head is a small platform, and the front small platform is 2.1mm in diameter. The radius of ball head is 4.5mm; the radius is 4.75mm a tappet. The depth of H 5.6mm a tappet, with oil tappet cavity nest in the bottom center, radius R1 1mm oil pit. With the improvement of the ball head and the concave form, so that the processing technology is simplified, the wear resistance is increased. In order to verify the effect, the utility model is respectively loaded with an adjusting screw and a tappet used in the engine for 1000 hours, and then, the ball head of the adjusting screw is detected and disassembled. The test data show that the wear resistance of the wear resistant adjusting screw and tappet is obviously improved, and the wear rate is 0.005 and 0.002. The wear rate of the original adjusting screws and tappet is 0.019 and 0.023.

【技术实现步骤摘要】

【技术保护点】
１．耐磨型调整螺钉和挺杆，其特征是调整螺钉球头（１）的前端为一小平台，球头的圆弧半径为４．５ｍｍ；挺杆凹窝（２）的圆弧半径为４．７５ｍｍ，挺杆凹窝的圆弧为椭圆状，椭圆的长轴为２３ｍｍ，短轴为１４．２ｍｍ，挺杆凹窝的深度ｈ为５．６ｍｍ，在挺杆凹窝（２）的下底中心设有油窝。

【技术特征摘要】

【专利技术属性】
技术研发人员：胡雪松，曹晓峰，贺兆欣，陶海峰，
申请(专利权)人：东风朝阳柴油机有限责任公司，
类型：实用新型
国别省市：21