UGNX8.0 Multi-Axis Machining Technology in Impeller Design and Programming Simulation Processing Application

2012 ◽  
Vol 249-250 ◽  
pp. 189-192
Author(s):  
Yan Yan Chen ◽  
Xiao Lu Ma ◽  
Yong Zhang
Keyword(s):  
Manufacturing Industry ◽  
Tool Path ◽  
Air Flow ◽  
Solid Modeling ◽  
Nc Machining ◽  
Cnc Machining ◽  
Processing Technology ◽  
Flow Meter ◽  
Processing Application ◽  
Simulation Results

The impeller as the key components of power generating machine, its processing technology has been an important subject in the manufacturing industry. The air flow meter uses in the integral impeller modeling, programming and processing research. Apply UGNX8.0 to the integral impeller for solid modeling and NC machining tool path simulation. In the terms of CNC machining for the characteristic and difficulty, put forward in this paper based on the UGNX8.0simulation of NC machining program and steps, successful interference free tool path, and according to the simulation results, generate four axis NC machining procedure of NC.

Application of Convex Hull for Tool Interference Avoidance in 5-Axis CNC Machining

1996 ◽  
Author(s):  
Yuan-Shin Lee ◽  
Tien-Chien Chang
Keyword(s):  
Convex Hull ◽  
Tool Path ◽  
Correction Method ◽  
Nc Machining ◽  
Cnc Machining ◽  
Free Form ◽  
Interference Avoidance ◽  
Tool Interference ◽  
Free Form Surface ◽  
Free Form Surfaces

Abstract In this paper, a methodology of applying convex hull property in solving the tool interference problem is presented for 5-axis NC machining of free-form surfaces. Instead of exhausted point-by-point checking for possible tool interference, a quick checking can be done by using the convex hull constructed from the control polygon of free-form surface modeling. Global tool interference in 5-axis NC machining is detected using the convex hull of the free-form surface. A correction method for removing tool interference has also been developed to generate correct tool path for 5-axis NC machining. The inter-surface tool interference can be avoided by using the developed technique.

Research on Subdivision Interpolation for High Speed CNC Applications

2011 ◽  
Vol 141 ◽  
pp. 449-454
Author(s):  
Jing Chuan Dong ◽  
Qing Jian Liu ◽  
Tai Yong Wang
Keyword(s):  
High Speed ◽  
Tool Path ◽  
Tracking Error ◽  
Linear Interpolation ◽  
Cnc Machining ◽  
Contour Error ◽  
Interpolation Scheme ◽  
Simulation Results ◽  
Cnc Controller ◽  
Better Than

High speed CNC machining relies on the smooth interpolation of tool path in order to prevent impact and vibration. We present a new interpolation scheme for CNC controller based on 6-point subdivision. The subdivision interpolation improves the smoothness of the original trajectory, while maintaining the accuracy. The algorithm is simple and effective, and therefore it is suitable for real-time execution in CNC controllers. Simulation results show that the proposed method performs better than linear interpolation, since the tracking error and contour error is reduced.

The Research of the Logarithmic Spiral Axis and NC Machining

2010 ◽  
Vol 135 ◽  
pp. 102-106 ◽  
Author(s):  
Ning Luo ◽  
You Yi Zheng ◽  
Guo Tai Han ◽  
Ke Jiang
Keyword(s):  
Geometric Modeling ◽  
Tool Path ◽  
Logarithmic Spiral ◽  
Nc Machining ◽  
Cnc Machining ◽  
Machining Process ◽  
Machining Center ◽  
High Fatigue ◽  
A New Technique ◽  
Cnc Machining Center

The characteristics of surface connection include high fatigue strength, high centering ability, easy dismantling and long life. According to these characteristics and based on the analysis of logarithmic spiral equation, the article explores a new technique of the matched logarithmic spiral profile connection to facilitate efficiently by formulating the machining process and analysing the part technology to determine the geometric modeling, tool path and simulation of NC machining graph and to inspect the process of Logarithmic spiral axes CNC Machining Center and CMM.

scholarly journals RBF Interpolation Algorithm for FTS Tool Path Generation

2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Yahui Nie ◽  
Yinfei Du ◽  
Zhuo Xu ◽  
Zimiao Zhang ◽  
Yang Qi
Keyword(s):  
Manufacturing Industry ◽  
Tool Path ◽  
Single Point ◽  
Tool Path Generation ◽  
Diamond Turning ◽  
Path Generation ◽  
Interpolation Algorithm ◽  
Interpolation Accuracy ◽  
Freeform Optics ◽  
Simulation Results

Freeform optics are defined as nonrotational symmetric optical surfaces in the manufacturing industry. Freeform optics are extensively applied to many areas in order to improve system performance. Fast tool servo (FTS) assisting single-point diamond turning technology has high application prospects in freeform optics machining. This paper discusses the interpolation algorithm for tool path generation of FTS through the application of a radial basis function (RBF) algorithm. For this purpose, a positive definite RBF with compact support was employed as the interpolant. The existence is mathematically proven. Numerical simulations were performed to compare the performances of the RBF algorithm and commonly used algorithms for satisfying the requirements of existence, smoothness, and accuracy. Machining experiments were also conducted to validate the applicability of the algorithm. The simulation results showed that the RBF interpolation algorithm outperformed other algorithms in terms of smoothness. The RBF algorithm also provided the highest interpolation accuracy. Furthermore, the RBF interpolation algorithm exhibited the highest accuracy for error distribution, with large errors distributed mainly in transition areas. The machining results were also in general agreement with the simulation results although obvious practical errors were observed. Overall, RBF interpolation can provide higher accuracy and better smoothness in the tool path generation of FTS.

TOOL PATH GENERATION OF CONTOUR PARALLEL BASED ON ANT COLONY OPTIMISATION

2016 ◽  
Vol 78 (6-9) ◽  
Author(s):  
Haslina Abdullah ◽  
Rizauddin Ramli ◽  
Dzuraidah Abd Wahab ◽  
Jaber Abu Qudeiri
Keyword(s):  
Path Length ◽  
Manufacturing Industry ◽  
Tool Path ◽  
Previous Method ◽  
Ant Colony ◽  
Numerical Control ◽  
Ant Colony Optimisation ◽  
Sharp Corner ◽  
Machining Time ◽  
Simulation Results

In today’s competitive market of manufacturing industry, shorter machining time is one of important factor for reducing the manufacturer’s cost. This paper presents the minimisation of machining time of computer numerical control (CNC) by eliminating the uncut region of sharp corner based on contour parallel milling method.  Each uncut region at sharp corner is represented by uncut line which consists of two nodes in x and y directions.  An Ant Colony Optimisation (ACO) method is used to optimize the tool path length because of its capability to find the shortest tool path length. The optimisation of tool path length based on ACO algorithm ascertained that the cutting tool remove the uncut line once and able to eliminate the uncut region in the shortest tool path length. To observe the effectiveness of the ACO performance, the simulation results are compared with the results obtained by the previous method.  Finally the simulation results show the reduction of 5% machining time compared to previous method.

Study on NC Machining of Parts with Rotational Characteristic

2011 ◽  
Vol 337 ◽  
pp. 584-587
Author(s):  
Wei Fang Wang ◽  
Wan Lin Zhou
Keyword(s):  
Manufacturing Industry ◽  
Nc Machining ◽  
Cnc Machining ◽  
Processing Quality ◽  
Application Technology ◽  
The Core ◽  
Equipment Manufacturing ◽  
Modern Manufacturing

CNC machining tool is the core application technology of equipment manufacturing and the key to modern manufacturing industry, which is of great significance to improve processing quality and efficiency. In general, parts with rotational characteristic are most common in NC machining. In this paper, some problems that are often encountered during NC Machining of Parts with Rotational Characteristic are introduced, and the reasons and solutions are also given.

Research on Path Optimization Technology for Free-Form Surface Five-Axis NC Machining

2012 ◽  
Vol 443-444 ◽  
pp. 202-208 ◽  
Author(s):  
Shu Kun Cao ◽  
Li Song ◽  
Ke Dong ◽  
Kai Feng Song ◽  
Zhi Ming Sui
Keyword(s):  
Tool Path ◽  
Simple Calculation ◽  
Nc Machining ◽  
Cnc Machining ◽  
Path Optimization ◽  
Free Form ◽  
Surface Boundary ◽  
Scallop Height ◽  
Free Form Surface ◽  
Five Axis

In view of all sorts of questions existing in CNC machining, such as machining vibration, so proposed a new method of free-form surface NC machining path optimization based on constant scallop height. This method first discrete surface boundary into the knife touch point based on the maximum tolerance, then in accordance with the maximum allowable scallop height generates circular trajectory with the same scallop, and finally connects adjacent curve path using the diagonal to achieve a continuous cutting scallop height tool path. This method can reduce the number of tools cut in and out parts, reduce the processing vibration and tool wear, and the surface processed has the same precision. This method has simple calculation, suitable for free-form surface of CNC highspeed and precision machining.

Adaptive spiral tool path generation for computer numerical control machining using point cloud

2021 ◽  
pp. 095440622199007
Author(s):  
Mandeep Dhanda ◽  
Aman Kukreja ◽  
SS Pande
Keyword(s):  
Tool Path ◽  
Cnc Machining ◽  
Numerical Control ◽  
Numerical Control Machining ◽  
Form Errors ◽  
Spiral Tool Path ◽  
Novel Method ◽  
Mesh Grid ◽  
Cloud Of Points ◽  
Cam Software

This paper reports a novel method to generate adaptive spiral tool path for the CNC machining of complex sculptured surface represented in the form of cloud of points without the need for surface fitting. The algorithm initially uses uniform 2 D circular mesh-grid to compute the cutter location (CL) points by applying the tool inverse offset method (IOM). These CL points are refined adaptively till the surface form errors converge below the prescribed tolerance limits in both circumferential and radial directions. They are further refined to eliminate the redundancy in machining and generate optimum region wise tool path to minimize the tool lifts. The NC part programs generated by our algorithm were widely tested for different case studies using the commercial CNC simulator as well as by the actual machining trial. Finally, a comparative study was done between our developed system and the commercial CAM software. The results showed that our system is more efficient and robust in terms of the obtained surface quality, productivity, and memory requirement.

A Generic, Geometric Approach to Accurate Machining-Error Predictions for 3-Axis CNC Milling of Sculptured Surface Parts: Part I — Modeling and Formulation

2006 ◽  
Author(s):  
Zezhong C. Chen ◽  
Wei Cai
Keyword(s):  
Tool Path ◽  
Cutting Tool ◽  
Geometric Model ◽  
Research Work ◽  
Geometric Approach ◽  
Cnc Machining ◽  
Sculptured Surface ◽  
Machining Error ◽  
Machining Errors ◽  
Tool Surface

In CNC machining, machining errors are usually caused by some of the sources such as cutting tool deflection, cutting tool wear, machine tool vibration, improper coolant/lubrication, and negative thermal effect. To increase product accuracy, much research has been carried out on the prediction of machining errors. However, in milling of sculptured surface parts, due to their curved shapes, the geometries of cutting tools do not match the parts’ surfaces well if the tools cut along the tool paths on the surfaces in a point-to-point way. As a consequence, machining error is inevitable, even if there is no other source of error in ideal machining conditions. To predict machining errors caused by this tool-surface mismatch, several methods have been proposed. Some of them are simple, and some represent the geometry of machined surfaces using cutter-swept surfaces. But none of these methods is accurate and practical. In this research work, a generic, geometric approach to predicting machining errors caused by the tool-surface mismatch is proposed for 3-axis sculptured surface milling. First, a new geometric model of the furrow formed by an APT tool moving between two neighboring cutter contact (CC) points is built. Second, the mathematical formula of cutting circle envelopes is derived. Then an algorithm for calculating machining errors in each tool motion is provided. Finally, this new approach is applied to two practical parts for the accurate machining-error predictions, and these predictions are then compared to the inaccurate predictions made by two established methods to demonstrate the advantages of this approach. This approach can be used in tool path planning for high precision machining of sculptured surface parts.

A Novel Method for Automated Tool Path Optimisation for CNC Machining Operations

2010 ◽  
Vol 166-167 ◽  
pp. 357-362
Author(s):  
Shahed Shojaeipour
Keyword(s):  
Tool Path ◽  
Target Location ◽  
Imaging System ◽  
Optimal Path ◽  
Digital Camera ◽  
Basic Program ◽  
Cnc Machining ◽  
Cnc Machine ◽  
Current Location ◽  
Tool Diameter

In this article, a new method for rapid tool movement in CNC machines is presented. Firstly, a single digital camera, installed on the Z-axis, captures the image of the workpiece on the work table. Image processing techniques, implemented using MATLAB, are then used to convert the image into a binary black and white image. This allows the locations of protruding edge sections on the workpiece, which could impede tool movement, to be identified. Quadtree decomposition is then performed on the binary image, and possible paths from the tool current location to its target location are found. These paths are then analysed based on the tool diameter clearance and the distance to the goal, and the shortest path with sufficient tool clearance is selected. A Visual Basic program then converts the selected path into G-code commands that provides instructions to the CNC machine tool such that this path is followed. With this method, the workpiece fixture location would not have to be precise as the imaging system would be able to automatically identify the target location with respect to the tool current location, along with the optimal path to reach it.

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