Principle and Application of the Ball End Mill Tool Radius Compensation for NURBS Curve Swept Surfaces Based on 3-Axis CNC Milling Machines

2021 ◽  
Author(s):  
Zhaoqin Wang ◽  
Xiaorong Wang ◽  
Xiaoqin Liu ◽  
Yusen Wang ◽  
Chengyu Li ◽  
...  
Keyword(s):  
Cnc Milling ◽  
End Mill ◽  
Ball End Mill ◽  
Nurbs Curve ◽  
Milling Machines ◽  
Radius Compensation

Ball End Mill—Tool Radius Compensation of Complex NURBS Surfaces for 3-Axis CNC Milling Machines

2020 ◽  
Vol 21 (8) ◽  
pp. 1409-1419
Author(s):  
Zhaoqin Wang ◽  
Xiaorong Wang ◽  
Yusen Wang ◽  
Ruijun Wang ◽  
Manyu Bao ◽  
...  
Keyword(s):  
Cnc Milling ◽  
End Mill ◽  
Ball End Mill ◽  
Milling Machines ◽  
Nurbs Surfaces ◽  
Radius Compensation

Modeling of Cutting Process with Cutter Axis Inclination

2011 ◽  
Vol 223 ◽  
pp. 66-74 ◽  
Author(s):  
Takashi Matsumura
Keyword(s):  
Tool Wear ◽  
Surface Finish ◽  
Cutting Temperature ◽  
Cutting Process ◽  
Mechanistic Models ◽  
End Mill ◽  
High Quality ◽  
Ball End Mill ◽  
Milling Operations ◽  
Edge Roughness

Multi-axis controlled machining has been increasing with the demand for high quality in mold manufacturing. The cutter axis inclination should be properly determined in the milling operations. The paper discusses the cutting process of ball end mill with the cutter axis inclination. Two mechanistic models are presented to show the effect of the cutter axis inclination on the tool wear and the surface finish. The actual cutting time during a rotation of the cutter reduces with increasing the cutter axis inclination. Then, the tool is cooled in the non-cutting time. The tool wear is suppressed with reducing the cutting temperature. The surface finish is also improved by increasing cutting velocities with the cutter axis inclination. When the cutter is inclined in the feed direction, the effect of the edge roughness on the surface finish is eliminated. The discussion based on the simulation is verified in the cutting tests for brittle materials.

One Touch Workpiece Verification System for CNC Machining Using a Low-Cost Computer Vision Approach

2016 ◽  
Author(s):  
Maxwell K. Micali ◽  
Hayley M. Cashdollar ◽  
Zachary T. Gima ◽  
Mitchell T. Westwood
Keyword(s):  
Computer Vision ◽  
Low Cost ◽  
Cnc Machining ◽  
Potential Operator ◽  
Cnc Milling ◽  
Machining Processes ◽  
Loop Control ◽  
Operator Error ◽  
Verification System ◽  
Milling Machines

While CNC programmers have powerful tools to develop optimized toolpaths and machining plans, these efforts can be wholly undermined by something as simple as human operator error during fixturing. This project addresses that potential operator error with a computer vision approach to provide coarse, closed-loop control between fixturing and machining processes. Prior to starting the machining cycle, a sensor suite detects the geometry that is currently fixtured using computer vision algorithms and compare this geometry to a CAD reference. If the detected and reference geometries are not similar, the machining cycle will not start, and an alarm will be raised. The outcome of this project is the proof of concept of a low-cost, machine/controller agnostic solution that is applied to CNC milling machines. The Workpiece Verification System (WVS) prototype implemented in this work cost a total of $100 to build, and all of the processing is performed on the self-contained platform. This solution has additional applications beyond milling that the authors are exploring.

Tool Path Generation for Five-Axis Controlled Machining of Free-Form Surface Using Barrel Tool: Control of Contact Point on Cutting Edge

2020 ◽  
Author(s):  
Tomonobu Suzuki ◽  
Koichi Morishige
Keyword(s):  
Tool Path ◽  
Contact Point ◽  
Cutting Edge ◽  
Free Form ◽  
End Mill ◽  
Ball End Mill ◽  
Surface Machining ◽  
Free Form Surface ◽  
The Cost ◽  
Five Axis

Abstract This study aimed to improve the efficiency of free-form surface machining by using a five-axis controlled machine tool and a barrel tool. The barrel tool has cutting edges, with curvature smaller than the radius, increasing the pick feed width compared with a conventional ball end mill of the same tool radius. As a result, the machining efficiency can be improved; however, the cost of the barrel tool is high and difficult to reground. In this study, a method to obtain the cutting points that make the cusp height below the target value is proposed. Moreover, a method to improve the tool life by continuously and uniformly changing the contact point on the cutting edge is proposed. The usefulness of the developed method is confirmed through machining simulations.

scholarly journals Enhancement of Teaching Design of CNC Milling Machines

2015 ◽  
Vol 176 ◽  
pp. 571-577 ◽  
Author(s):  
Antonín Max ◽  
Václava Lašová ◽  
Šimon Pušman
Keyword(s):  
Cnc Milling ◽  
Teaching Design ◽  
Milling Machines
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