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超声振动切削不锈钢时刀具磨损与寿命的试验研究 总被引:1,自引:0,他引:1
本文对超声振动切削不锈钢进行了试验研究,分别就切削速度、进给量对刀具磨损的影响问题进行了论述,分析了振切时刀具磨损的原因,提出了减小磨损的一些措施。 相似文献
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湿式超声振动切削时刀具磨损与寿命的试验研究 总被引:3,自引:0,他引:3
超声振动切削工业用特软材料,即使用细晶粒的硬质合金刀片,不加切削液时,刀具寿命提高的程度并不显著。为此,本文介绍了采用加切削液的湿式振切方式。经试验知,在本文条件下以采用低粘度的2号主轴油为佳,如取较大的刀具振幅(A)与较低的切削速度(V),可使湿式超声振切时刀具寿命有明显的提高。本文还探讨了超声振切时,切削液通过动态润湿、泵吸与油楔等作用方式,对刀—屑、刀—工界面起到了显著的缓冲与减阻作用。 相似文献
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黑色金属的金刚石超声振动切削 总被引:3,自引:0,他引:3
黑色金属的金刚石超声振动切削大连理工大学(116224)张元良刘欣方加宝董桂英陈懋圻迄今为止,在生产中,天然金刚石只能用于切削有色金属、塑料及某些晶体材料,不能加工钢铁等黑色金属。这是因为在切削黑色金属时,金刚石刀具的磨损极快,使切削难以持续进行。在... 相似文献
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使用聚晶金刚石刀具进行了超声波振动切削不锈钢的实验研究,研究了切削方式对切削力及已加工表面粗糙度的影响规律。通过对刀具磨损区微观形貌的观测,分析了PCD刀具切削不锈钢时的磨损机理。结果表明,化学磨损在金刚石刀具切削黑色金属时占主导地位。超声振动切削可明显减小切削变形、切削力及刀具磨损。 相似文献
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Inconel 718合金超声振动切削质量与刀具寿命控制研究 总被引:1,自引:1,他引:0
超声振动切削UVC是解决难加工材料精细加工问题的理想方法。在对Inconel718合金同时进行UVC和传统车削法CT加工中,研究了切削参数(切削速度、进给量、切削时间)对刀具切削性能的影响。通过对刀具磨损、切屑形态和工件表面粗糙度的研究,发现在进行低速硬态切削时,UVC在切削表面质量和刀具寿命方面均优于传统车削加工。同时随着刀具-工件表面接触率TWCR的降低,刀具磨损和切削力随之降低,而工件表面质量和刀具寿命得到提高。 相似文献
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Analysis of regenerative chatter suppression with adding the ultrasonic elliptical vibration on the cutting tool 总被引:1,自引:0,他引:1
A method is proposed to suppress regenerative chatter in turning operation, in which the ultrasonic elliptical vibration is added on the cutting tool. It results in the fact that the cutting tool is separated periodically from the chip and the workpiece, and the direction of the frictional force between the rake face of the cutting tool and the chip is reversed in each cycle of the ultrasonic elliptical vibration. The experimental investigations show that the regenerative chatter occurring in ordinary turning operation can be suppressed effectively by applying the ultrasonic elliptical vibration on the cutting tool. In order to clearify the reason of the regenerative chatter suppression, theoretical analysis and computer simulation are performed on turning with ultrasonic vibration. There is a good agreement among the experimental investigations, theoretical analysis and the computer simulation. 相似文献
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H. Chelladurai V. K. Jain N. S. Vyas 《The International Journal of Advanced Manufacturing Technology》2008,37(5-6):471-485
Cutting tool wear is a critical phenomenon which influences the quality of the machined part. In this paper, an attempt has
been made to create artificial flank wear using the electrical discharge machining (EDM) process to emulate the actual or
real flank wear. The tests were conducted using coated carbide inserts, with and without wear on EN-8 steel, and the acquired
data were used to develop artificial neural networks model. Empirical models have been developed using analysis of variance
(ANOVA). In order to analyze the response of the system, experiments were carried out for various cutting speeds, depths of
cut and feed rates. To increase the confidence limit and reliability of the experimental data, full factorial experimental
design (135 experiments) has been carried out. Vibration and strain data during the cutting process are recorded using two
accelerometers and one strain gauge bridge. Power spectral analysis was carried out to test the level of significance through
regression analysis. Experimental results were analyzed with respect to various depths of cut, feed rates and cutting speeds. 相似文献
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高锰钢切削极易产生硬化层,很难加工。在生产实践中,通过合理地选择刀具材料、刀具结构、切削用量等,可以很好解决高锰钢难加工的问题,保证了高锰钢的加工质量。 相似文献
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Profasor Jeong-Du Kim Eun-Sang Lee 《The International Journal of Advanced Manufacturing Technology》1996,12(2):78-86
In the use of carbon fibre reinforced plastics (CFRP) it is often necessary to cut the components, but cutting CFRP is often made difficult by delamination of the composites and by the short tool life. In this paper, the machinability of CFRP by means of ultrasonic vibration cutting was experimentally investigated. The experimental results have led to a trial application of ultrasonic vibration cutting, which has been verified experimentally to be highly effective in view of cutting force and surface quality. 相似文献
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Gwo-Lianq Chern Han-Jou Lee 《The International Journal of Advanced Manufacturing Technology》2006,27(7-8):688-692
The purpose of this paper is to investigate the effects of assisted vibration on the drilling quality of aluminium alloy (Al
6061-T6) and structure steel (SS41). In the past, research methodology of vibration drilling on small-diameter holes has mainly
involved vibrating from the spindle side. In this paper, a new approach to obtain the desired vibration is proposed from the
workpiece side, by a self-made, vibrating worktable. Through extensive experiments with a twist drill size of 0.5 mm, we found
that hole oversize, displacement of the hole centre, and surface roughness of the drilled wall could be improved with the
increase of vibrating frequency and amplitude. Roundness of the drilled hole could also be improved when high amplitude and
proper frequency are imposed. 相似文献