Papers by Keyword: Edge Quality

Abstract: The importance of the surface integrity in modern machining is represented. Based on the notion of the surface integrity that was put forward by Michael Field, a new method of surface integrity characterization is presented in this paper. This method consists of surface quality, surficial coat quality and the edge quality. Then an evaluation system of surface integrity based metrology is constructed and has been applied in a machining process of nickel-base alloy turbine disk. The manufacturing time decreased by approximately 10%. In all, this characterization and the evaluation system of surface integrity are rational and efficient. This work let us be capable of breaking through in the systematical evaluation of present machining surface.

Abstract: Based on the research on the quality of grinding surface of engineering ceramics, the engineering materials can be widely used. The ultrasonic grinding surface of the ceramic plate is discussed in this paper by dividing regionally. Concentrating on how the edge quality affects the surface topography, the white-light interference measuring techniques is used to observe the topography of the grinding surface.

Abstract: The high strength to weight ratio and good corrosion resistance of titanium alloys, have led to an increasing use of these materials, particularly in the aerospace industry. The laser cutting technique may be a promising tool in machining titanium alloy parts like those with subsequent welding requirement: in this case, surface quality of the kerf edges is of great importance. The low thermal conductivity and the high chemical activity of titanium alloys lead, in fact, to alterations of the surface properties of the machined zone. This paper presents the results of titanium alloy laser cutting using a 2 kW fiber laser. The cutting process was performed in continuous wave mode and using Argon as shear gas. Laser cuts were realized on titanium alloy Ti6Al4V sheets 1mm thick. Image analysis and microscopy, were carried out to examine the cutting edge quality features including thickness of the recast layer and heat-affected zone.

Abstract: In this paper, the edge quality of the nano-ZrO2 ceramics surface grinding was studied on experiments. Through the microscopic observation and measurement on the edge micro-step，and the white interference detection on the 3D surface profile of both sides of the edges, the edge quality traits are obtained，which lay a foundation for further study on the technology of the edge quality controlling and hard brittle material surface integrity evaluation.

Abstract: With the development of machine manufacture science and technology toward precise, quality evaluation of precision parts has put forward higher request. Problems are pointed out in this paper based on comparison and analysis of burr standard at home and abroad. This study suggests the viewpoint of edge quality of precision parts and provides the fundamentals for enhancing edge (burr) quality according to items such as economic cost, technology level, manufacture level, personnel technological capability and production management level. These have important theoretical value and applied prospects for further enriching and perfecting burr standard, promoting precision machining and automatic machining technology.

Abstract: BEST-JAPAN has being proceeded the standardization of the Edge Quality. Already, we announced this one at international conference on “Precision Surface Finishing and Deburring” at San Francisco and St. Petersburg. This paper describes the discussion of the Edge Quality and Indication & Evaluation Methods of The Edge Quality.

Abstract: One of the most effective methods for enhancing edge quality is to prevent the tool from exiting the work part in a machining operation. Exit here refers specifically to the tool cutting edges moving out of the part at an edge while removing material. Only entrance burrs are allowed to occur in this condition, resulting in less serious edge defects. This study presents a two-stage geometric algorithm for avoiding tool exits in planar milling of 2D free form contours. The cutter positions causing the tool to exit the part are first detected; then a heuristic scheme is applied to generate new cutter locations with no tool exits. Experimental results show that edge quality is significantly improved. This work provides a feasible method for reducing edge defect in an automatic manner without the need of edge finishing, which is highly advantageous in meso-scale machining.