共查询到19条相似文献,搜索用时 109 毫秒
1.
2.
3.
4.
5.
在干切环境下选用了硬质合金刀具对近β相钛合金TC17进行高速铣削研究。着重讨论高速铣削过程中的铣削力、刀具磨损和刀具耐用度;研究分析各铣削参数对铣削力、刀具磨损和刀具耐用度的影响规律。 相似文献
6.
高锰钢是一种典型的难加工材料,其特点是强度高、硬度高和耐磨性好,切削加工性差,主要是刀具耐用度和加工效率低。本文着重分析在干切削情况下钻削ZGMn13高锰钢,通过充分的理论分析和科学实验,对硬质合金群钻的几何参数与结构进行改进,为高锰钢的钻削加工提供了科学依据。 相似文献
7.
针对基于铣削高强度钢的刀具的耐用度和材料切除率的铣削参数控制进行了研究。通过正交试验,建立了刀具耐用度模型,研究了基于铣削参数的灵敏度和相对灵敏度模型的稳定区间敏感性分析方法,结合正交试验中的极差分析,提出了刀具耐用度和材料切除率的铣削参数区间优选流程,优选出铣削参数稳定区间,并优选出铣削参数。研究结果表明:铣削AerMet100钢时,铣削速度vc的优选范围为100~105m/min,每齿进给量fz的优选范围为0.11~0.12mm,铣削深度ap的优选范围为2.1~2.5mm;铣削参数优选为vc=100m/min,fz=0.11mm,ap=2.5mm。研究结果为优选高强度钢铣削参数以及进行刀具耐用度和材料切除率的控制研究提供了理论方法和试验依据。 相似文献
8.
9.
10.
<正> 在切削过程中,刀具磨损到一定限度就要更换。刀具在两次刃磨之间所能切削的总时间称为刀具耐用度。在具体加工条件下,刀具耐用度随着切削用量,特别是切削速度的增大而减小。众所周知,生产率和成本与切削量、切削速度有关,因而刀具耐用度将直接影响到加工过程的生产率和成本。目前,一般有四种刀具耐用度[1][2][3][4]:(1)最大耐用度t_M:因对应的切削速度低,生产率太低。(2)最佳耐用度t_O:可保证切削路程最长,相对磨损最小,但生产率不高。(3)最大有效耐用度(或称经济耐用度) t_C:可保证生产成本最低,但生产率不高。(4)最大生产率耐用度t_P:可保证生 相似文献
11.
介绍了高锰钢的切削加工特性,并结合高锰钢ZGMn13的车削加工特点,提出通过热处理改变材料的硬度。同时推荐了高锰钢ZGMn13切削加工中合理的刀具材料、几何参数及切削用量,并且指出了钻削高锰钢ZGMn13时应注意的问题。 相似文献
12.
13.
14.
15.
为了实现难加工材料ZGMn13的钻削温度的测量,建立了一套钻削温度测量系统。系统的硬件部分由计算机、数据采集卡、放大电路和电偶回路组成,软件部分采用虚拟仪器技术来实现。通过此系统得到钻削温度沿主切削刃分布,切削用量对切削温度影响的规律,得到了ZGMn13钻削温度的回归方程,证明了所建立的实验系统的有效性。 相似文献
16.
王荣滨 《中国制造业信息化》1998,(4)
为提高高锰钢履带板的使用寿命,对关键的强韧化处理技术中的水韧处理工艺进行了试验,认为材料为ZGMn13的高锰钢在冶炼时加入少量合金元素(Mo、V、RE)后,再采用水韧处理工艺;在高应力作用下有优异的耐磨性,在低应力作用下也有高的耐磨性,因此具有明显的技术经济效益。 相似文献
17.
Machining process productivity and machined part quality improvement is a considerable challenge for modern manufacturing. One way to accomplish this is through the application of PVD coatings on cutting tools. In this study the wear rate and wear behavior of end milling cutters with mono-layered TiAlCrN and nano-multilayered self-adaptive TiAlCrN/WN PVD coatings have been studied under high performance dry ball-nose end-milling conditions. The material being machined in this case is hardened H13 tool steel. The morphology of the worn surface of the cutting tool has been studied using SEM/EDX. The microstructure of the cross-section of the chips formed during cutting was analyzed as well. The surface integrity of the workpiece material was also evaluated. Surface roughness and microhardness distribution near the surface of the workpiece material was also investigated. The data presented shows that achieving a high degree of tribological compatibility within the cutting tool/workpiece system can have a big impact on tool life and surface integrity improvement during end milling of hardened tool steel. 相似文献
18.
19.
Yung-Cheng Wang Chi-Hsiang Chen Bean-Yin Lee 《The International Journal of Advanced Manufacturing Technology》2014,72(1-4):521-530
Further progress in green cutting applications depends on the innovativeness of machine tools, advances in tool development, and, especially, more complex tool and cutting technologies. Therefore, this study analyzes the factors influencing high-speed cutting performance. Grey relational analysis and the Taguchi method are then incorporated in the experimental plan with high-speed milling of AISI H13 tool steel. Experimental results indicate that the contributions of tool grinding precision, geometric angle, and cutting conditions to the multiple quality characteristics of high-speed milling for AISI H13 tool steel are 11.75, 9.80, and 73.11 %, respectively. For rough machining, tool life and metal removal volume are the primary evaluation indicators and cutting parameters should be prioritized, especially cutting speed and feed per tooth. In finish machining, workpiece surface roughness is the primary evaluation indicator. Besides the selection of cutting parameters, the design and grinding of endmill are critical factors, especially the design and grinding of relief angles. 相似文献