The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Machining vibration is one of the main phenomenon occurs in milling of thin-walled workpiece, it will lead to poor surface finish and low machining efficiency. Especially for challenging situations such as large dimension closed casing, vibration is one of the main factors affecting the improvement of machining efficiency. In this work, a method by applying damping support fixtures for machining vibration...
The wear state of a cutting tool is an important factor which affects machining quality. Therefore, monitoring tool wear is extremely essential to ensure workpiece quality and improve tool life. This paper models the milling forces of a worn tool and proposes a recognition method of milling tool wear state based on the influence relationships between the milling force features and tool wear. In the...
A localization method for freeform surface workpiece with particle swarm optimization (PSO) algorithm is proposed in this paper. This study is the first attempt to use PSO as a matching algorithm in localization based on in situ measuring technology. The performance of the algorithm is studied by a set of simulations and optimal parameters settings are given. To test the performance of PSO and compare...
In the manufacturing process, the cutting tool wear is an important affecting factor of the product quality. Tool wear condition monitoring is an effective means to ensure the workpiece quality, and to improve the tool life. Tool flank wear will directly lead to the variation of milling force. Therefore, a flank wear recognition approach of flat end milling tool based on the influence of the tool...
Presented in this paper is a method to generate interference free toolpaths for four-axis electrical discharge rough milling of blisk. Initial toolpaths are generated for the blisk with initial tool orientation. Interference detection is then carried out between the electrode and workpiece, optimized tool orientation is selected for location where interference exists. As for locations where interference...
Thin-walled parts are widely used in aerospace, ships and automotive fields. However, due to the characteristics of multi-process and multi-procedure manufacturing technology, the production efficiency and machining precision of those parts are greatly limited. In this paper, a unified geometric modeling method for precision machining of thin-walled parts is presented. The unified model is established...
The multi-patches structure are widely used in various types of complex structure products such as the snubber of blade in the engine manufacturing industry. These parts are often machined with five-axis machine tool. When using the normal tool path planning method, it will be difficult to offset the surfaces and there will be redundant cutter retraction. In order to solve the above problems, this...
Instantaneous chip thickness during three typical end milling processes is analyzed in this paper. The tooth trajectory of a milling cutter is a combination of two motions, one is the rotation of the cutter spindle and the other is the feed motion of the cutter relative to work-piece. For simplification traditional chip thickness models always simplify the tooth trajectory as a circle to get approximate...
Focusing on the tool orientation control in multi-axis milling of freeform surface blade, quaternion interpolation method is employed to get smooth and collision-free tool orientation. Presented tool orientation planning method is based on the blade's shape features, it can avoid collision between the tool and the platform surface. Tool orientations on the boundary curves of the machining area are...
Due to the inevitable distortion and defects of a worn part, the nominal CAD model from the design stage is no longer suitable for the use in the repair process. This causes the main problem of precisely repairing complex blades. In this paper, an approach to geometry reconstruction based on cross-section curve blending with wavelet decomposition for blade adaptive repair is proposed. It is useful...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.