当前位置: X-MOL 学术Int. J. Precis. Eng. Manuf. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Design of Pin-on-Disk Type Abrasion Testing Machine for Durability Assessment of Rock Cutting Tools
International Journal of Precision Engineering and Manufacturing ( IF 1.9 ) Pub Date : 2021-05-21 , DOI: 10.1007/s12541-021-00534-w
Dae-ji Kim , Hoon Kang , Chang-Heon Song , Joo-Young Oh , Jung-Woo Cho , Jamal Rostami

The accurate evaluation of rock abrasion is essential for the estimation of cutter costs in rock cutting and drilling operations. In this study, a novel abrasion testing machine was developed for rock cutting tools such as pick cutters. The developed machine employs the pin-on-disk abrasion method of ASTM (American Society for Testing and Materials). The Archimedean spiral function was selected as the moving path for the pin on the rock surface. An approximation solution was adopted for the modeling of the inward and outward spiral motions under the constant velocity of the pin. After investigating the operating conditions of the pick cutter under actual cutting conditions, the specifications of the machine were set to simulate field conditions, and the testing apparatus was designed. A finite element analysis was conducted to investigate the structural stability of the machine. After the verification of the design through numerical modeling, the test unit was manufactured. Validation tests were conducted on various rock samples. The results confirmed that the abrasion testing machine effectively followed the designated pre-designed spiral path. This paper, therefore, proposes a pin-on-disk type abrasion testing method which can simulate the actual abrasion phenomenon on the real cutting conditions (i.e., force and velocity) of rock cutting tools.



中文翻译:

岩石切削刀具耐久性评估的针盘式磨损试验机的设计

岩石磨损的准确评估对于估算岩石切割和钻孔操作中的刀具成本至关重要。在这项研究中,开发了一种新型的磨耗试验机,用于凿岩机之类的岩石切割工具。开发的机器采用了ASTM(美国测试和材料学会)的销盘磨损方法。选择了阿基米德螺旋函数作为岩石表面上销的移动路径。在销子的恒定速度下,向内和向外螺旋运动的建模采用了近似解。在研究了割刀在实际切割条件下的工作条件之后,设置了机器规格以模拟现场条件,并设计了测试设备。进行了有限元分析以研究机器的结构稳定性。通过数值建模对设计进行验证后,就制造了测试单元。对各种岩石样品进行了验证测试。结果证实,磨损试验机有效地遵循了指定的预先设计的螺旋路径。因此,本文提出一种销盘式磨损测试方法,该方法可以模拟岩石切割工具在真实切削条件(即力和速度)下的实际磨损现象。结果证实,磨损试验机有效地遵循了指定的预先设计的螺旋路径。因此,本文提出一种销盘式磨损测试方法,该方法可以模拟岩石切割工具在真实切削条件(即力和速度)下的实际磨损现象。结果证实,磨损试验机有效地遵循了指定的预先设计的螺旋路径。因此,本文提出一种销盘式磨损测试方法,该方法可以模拟岩石切割工具在真实切削条件(即力和速度)下的实际磨损现象。

更新日期:2021-05-22
down
wechat
bug