Numerical Control Programming System for Mill-Turn Machining

2015 ◽  
Vol 799-800 ◽  
pp. 1154-1157
Author(s):  
Chen Hua She ◽  
Jian Yu Lin ◽  
Shen Yung Lin
Keyword(s):  
Computer Aided Design ◽  
Tool Path ◽  
Geometric Model ◽  
Control Program ◽  
Simulation Software ◽  
Numerical Control ◽  
Programming System ◽  
Nc Program ◽  
Machining System ◽  
The Cost

To develop the numerical control program of mill-turn machine, the traditional method is to apply the computer-aided design and manufacture software to construct the geometric model, then to generate tool path and convert the path to NC program. For complex numerical control program of mill-turn machine, such as the multiple turret synchronized motion machining, because of the need to control time sequence, the NC program is highly required on using of dedicated software system. The objective of this paper is to establish a mill-turn machining system with window interface of via the language of Borland C++ Builder. The developed system can plan the machining path of simple mill-turn features, including turning shape, axial slot milling, and radial packet milling, and generate the corresponding NC program. For the milling functions, after the offset coordinates are calculated along the polygonal angle vector in the center point of cutters, the NC program is generated. For the turning functions, through importing the 2D DXF (Drawing Exchange Format) file and inputting related configurations, the entity coordinates can be retrieved and the corresponding NC program is then converted. By means of the solid cutting simulation software and practical cutting experiment for the generated numerical control program, the accuracy of the tool path generation algorithm is confirmed. Hence, the cost of purchasing commercial software can be saved and the time of generating program can also be decreased so that the working efficiency can be enhanced.

Transformation of Three-Axis Tool Path to Inclined Plane for Five-Axis Machining

2013 ◽  
Vol 716 ◽  
pp. 614-619
Author(s):  
Chen Hua She ◽  
Zhi Hao Zheng
Keyword(s):  
Machine Tool ◽  
Tool Path ◽  
Control Program ◽  
Simulation Software ◽  
Numerical Control ◽  
Inclined Plane ◽  
Nc Program ◽  
Cad Cam ◽  
Five Axis ◽  
Very High

Manufacturing industries such as the aerospace industry and the molding industry need to process products of complex and high-precision curved surface. Multi-axis machine tool with two rotational axes plays an indispensable role in processing such products. However, in a fiercely competitive market, each manufacturer is devoted to reduce processing time and costs. Therefore, how to efficiently create multi-axis numerical control program has become an important issue. Typical multi-axis machining parts often have specific machining features such as hole, groove or even engraved text on the inclined plane. Although the tool path can be generated by the advanced multi-axis CAD/CAM system, the prices of such systems are very high. This study proposed a methodology for defining the inclined working plane of the multi-axis machining tool. According to the defined working coordinate system proposed in this study, the tool path files of the traditional three-axis machine tool can be transformed to the five-axis NC program through post-processing calculation. As a result, the required NC program can be obtained for the same machining feature on any inclined plane in shorter time. Finally, this study tested and confirmed the accuracy of the numerical control program by solid cutting simulation software.

Tool Path Simulation Software with Ultra-Precision Grind for Aspherical Elements

2007 ◽  
Vol 10-12 ◽  
pp. 488-492
Author(s):  
Hui Feng Wang ◽  
Guang Lin Wang ◽  
Ze Sheng Lu
Keyword(s):  
Tool Path ◽  
Nc Machining ◽  
Simulation Software ◽  
Numerical Control ◽  
Machining Efficiency ◽  
Control Code ◽  
Nc Program ◽  
Ultra Precision

It is very important to improve machining efficiency and ensure manufacture quality through testing NC program of aspherical elements machining with simulation software. For ultra -precision NC machining tool, we analyzed the tool path of ultra-precision grind for aspherical elements, edited a simulation software of the path, got a structural chart of the software, analyzed some important module of the software. In fact the software is able to imitate tool path, test the correctness of numerical control code according to numerical control code edited.

scholarly journals CNC PROGRAM AND PROGRAMMING OF CNC MACHINE

2020 ◽  
Vol 7 (1) ◽  
pp. 019-023
Author(s):  
Maya Fatriyana
Keyword(s):  
Numerical Control ◽  
Programming System ◽  
Cnc Machine ◽  
Automatic Sequences ◽  
Nc Programming ◽  
Nc Program ◽  
Cnc Programming ◽  
Nc Machine ◽  
The Cost ◽  
Selection Of

A programming to make parts are CNC Programming (Computer Numerical Control Programming) for machines. An NC program consists of a sequence of instructions that control the motion and automatic sequences of an NC Machine to perform a particular processing task. In a general sense, the term NC programming refers to the creation of control data for machining workpieces on NC and CNC machines. NC programming has a decisive influence on the cost-effectiveness and profitability of NC manufacturing. The selection of a programming system is mostly guided by the need for software that is suitable for the application at hand, readily available, and as universally applicable as possible.

Synchronous Adjustment of Milling Tool Path Based on the Relative Deviation

2011 ◽  
Vol 133 (5) ◽  
Author(s):  
Xiao-Jin Wan ◽  
Cai-Hua Xiong ◽  
Lin Hua
Keyword(s):  
Tool Path ◽  
Cutting Tool ◽  
Cnc Machining ◽  
Numerical Control ◽  
Machining Process ◽  
Machining Accuracy ◽  
Source File ◽  
Modern Computer ◽  
Adjustment Strategy ◽  
Machining System

In machining process, machining accuracy of part mainly depends on the position and orientation of the cutting tool with respect to the workpiece which is influenced by errors of machine tools and cutter-workpiece-fixture system. A systematic modeling method is presented to integrate the two types of error sources into the deviation of the cutting tool relative to the workpiece which determines the accuracy of the machining system. For the purpose of minimizing the machining error, an adjustment strategy of tool path is proposed on the basis of the generation principle of the cutter location source file (CLSF) in modern computer aided manufacturing (CAM) system by means of the prediction deviation, namely, the deviation of the cutting tool relative to the workpiece in computer numerical control (CNC) machining operation. The resulting errors are introduced as adjustment values to adjust the nominal tool path points from cutter location source file from commercial CAM system prior to machining. Finally, this paper demonstrates the effectiveness of the prediction model and the adjustment technique by two study cases.

Tool Path Generation for 5-Axis Rough Cutting Using Haptic Device

2020 ◽  
Vol 14 (5) ◽  
pp. 808-815
Author(s):  
Koichi Morishige ◽  
Satoshi Mori ◽  
◽  
Keyword(s):  
Tool Path ◽  
Cutting Tool ◽  
Control Program ◽  
Target Object ◽  
Tool Path Generation ◽  
Haptic Device ◽  
Numerical Control ◽  
Path Generation ◽  
Haptic Devices ◽  
Tool Paths

CAM software is generally used to generate tool paths for 5-axis controlled machining. However, adjusting its several parameters and settings is difficult. We propose a system for tool path generation to be applied to 5-axis controlled machining. The system allows machining movements to be established by manipulating haptic devices in a virtual environment. Therefore, the cutter location for 5-axis machining can be easily controlled by operating a virtual cutting tool. The contact between the cutting tool and the target shape is reflected to the user through the haptic device. The generated path can be converted into a numerical control program for the actual machining of the target object. We detail the implementation of the proposed interface using two haptic devices and a method of tool path generation that improves rough cutting by smoothing the generated cutting points and simplifying the tool postures. The effectiveness of the developed system is confirmed through machining simulations.

Geometric Model for Generation of Contour- Parallel Lines’ Family for Cutting Tool’s Path Automated Computation

2019 ◽  
Vol 7 (1) ◽  
pp. 3-13 ◽  
Author(s):  
К. Панчук ◽  
K. Panchuk ◽  
Т. Мясоедова ◽  
T. Myasoedova ◽  
И. Крысова ◽  
...  
Keyword(s):  
Analytical Solution ◽  
Computer Aided Design ◽  
Tool Path ◽  
Geometric Model ◽  
Cutting Tools ◽  
Algebraic Models ◽  
Cnc Machines ◽  
Multiply Connected ◽  
Parallel Lines ◽  
Polygonal Region

In this paper has been proposed a geometric model for forming problem of contour-parallel lines (equidistant lines) for a flat contour with an island, and has been obtained the problem’s analytical solution, which is relevant for computer-aided design of cutting tools processing pocket surfaces on CNC machines. The proposed geometric model is based on cyclograph mapping of space on a plane. Beyond the analytical solution the geometric model differs from the known algebraic models and their solutions for considered forming problem also by the fact that it allows obtain a more complete and evident representation on the relationship and interaction for all its geometric components at the stages of 3D computer visualization. A 3D geometric model based on a cyclograph mapping of space has been proposed for obtaining the families of equidistant lines for connected and multiply connected regions with closed contours taken as a basis for pocket surfaces modeling. An algorithm for the analytical solution of the problem related to equidistant families generation is getting from the geometric model. All stages of the analytical solution are accompanied by a figurative representation of geometric objects and their relations in the geometric model’s virtual electronic space. The proposed in this paper algorithm for the case of a doubly connected polygonal region can be used as a basis for generation of equidistant families for multiply connected polygonal regions. The presence of the analytical solution for the problem related to equidistant families generation simplifies greatly the automated calculation of the tool path and preparation of control programs for pocket surfaces manufacturing on CNC machines. Have been presented an example and algorithm providing support for working capacity of the proposed geometric model for considered forming problem.

Mechanical implementation services for rapid prototyping

2002 ◽  
Vol 216 (8) ◽  
pp. 1193-1199 ◽  
Author(s):  
S H Ahn ◽  
S McMains ◽  
C H Séquin ◽  
P K Wright
Keyword(s):  
Machine Tool ◽  
Computer Aided Design ◽  
Tool Path ◽  
Complex Geometry ◽  
Numerical Control ◽  
Open Architecture ◽  
Fused Deposition Modelling ◽  
Cnc Machine ◽  
Fused Deposition ◽  
Trade Offs

Inspired by the metal oxide system implementation service (MOSIS) project, CyberCut is an experimental fabrication testbed for an Internet-accessible, computerized prototyping and machining service. Client-designers can create mechanical components, generally using our web-based computer aided design (CAD) system (available at http://cad.berkeley.edu ), and submit appropriate files to the server at Berkeley for process planning. CyberCut then utilizes an open-architecture, computer numerical control (CNC) machine tool for fabrication. Rapid tool path planning, novel fixturing techniques and sensor-based precision machining techniques allow the designer to take delivery of a component machined from high-strength materials with good tolerances, e.g. ±0.002in (0.05 mm). There are also instances where the complex geometry of a component cannot be prototyped on our three-axis machine tool. For these components use is made of solid freeform fabrication (SFF) technologies such as fused deposition modelling (FDM) to build a prototype of the design. Based on experience with this testbed, a new characterization of types of relationship, or ‘couplings’, between design and manufacturing has been developed using the three classifications ‘loose and repetitive’, ‘stiff and one-way’ or ‘strong and bidirectional’. These three couplings represent different trade-offs between ‘design flexibility’ and ‘guaranteed manufacturability’.

Virtual Manufacturing of Straight Bevel Gear Based on Pro/E Wildfire

2014 ◽  
Vol 1044-1045 ◽  
pp. 902-905
Author(s):  
Ji Shun Lin
Keyword(s):  
Tool Path ◽  
Control Program ◽  
Virtual Manufacturing ◽  
Numerical Control ◽  
Milling Machine ◽  
Post Processing ◽  
Milling Cutter ◽  
Straight Bevel Gear ◽  
Nc Milling ◽  
Finishing Machining

Making use of function of NC programme provided by Pro/NC, aiming at general NC milling machine and using general milling cutter, this thesis attempts to establish the tool path of straight bevel gear’s finishing machining and then put forward the idea of processing piece by piece. In this way, “over cutting” and “short cutting” can be avoided and the precision of process can be improved. Finally, the accuracy of product designing and manufacture can be tested by post-processing of numerical control program of straight bevel gear’s finishing processing with the VERICUT’s simulating.

scholarly journals Prompt Estimation of Die and Mold Machining Time by AI Without NC Program

2021 ◽  
Vol 15 (3) ◽  
pp. 350-358
Author(s):  
Hiroki Takizawa ◽  
Hideki Aoyama ◽  
Song Cheol Won ◽  
◽  
◽  
...  
Keyword(s):  
Computer Aided Design ◽  
Surface Curvature ◽  
Numerical Control ◽  
Color Information ◽  
Rough Machining ◽  
Machining Time ◽  
Machined Surface ◽  
Nc Program ◽  
Computer Aided ◽  
Shape Data

Machining time estimation is essential for the due-date estimation of products as well as for production planning. Conventionally, machining time has been estimated by a computer aided manufacturing (CAM) system, which requires time and effort to create its numerical control (NC) program and requires machining expertise to operate it. In addition, among the problems with conventional methods, an error in the estimated machining time arises owing to the machine tool’s control characteristics. In this study, an artificial intelligence (AI)-based system capable of estimating machining time promptly and simply based on shape data without requiring any NC program is developed. The input data to the AI system are color information regarding the machined depths, which are used to estimate the rough-machining time, and color information regarding the machined surface curvature distributions to estimate the finish-machining time. Color information on the machined depths and machined surface curvature distributions is created using three-dimensional computer aided design (3D CAD) data. To build the AI system, the shape data and machining time data accumulated at the machining site are used, so that the machining time estimated reflects the machining method, machining expertise, and the machine tool characteristics employed.

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