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Über dieses Buch

This book uses kinematics, mechanics, mathematics, and so on, to systematically propose the fixturing performance evaluation and fixturing layout planning method. The proposed method is a novel method, including the analysis method of locating determination, the analysis method of workpiece stability, the analysis method of clamping reasonability, the analysis method of workpiece attachment/detachment, the analysis method of locating accuracy, and the planning algorithm of locating point layout, the planning algorithm of clamping force, and so forth. It can enrich and develop the basic theory of computer aided fixture design, change the empirical method of fixture design. The combination of theoretical analysis and mathematical modeling technology can resolve the key problems in the process of fixture design, which will play a certain role in promoting the progress of manufacturing technology, improving the precision and level of product manufacturing, and meeting the higher and higher requirements of mechanical manufacturing industry.

Inhaltsverzeichnis

Frontmatter

1. Introduction

Abstract
Whether in traditional manufacturing industry or modern flexible manufacturing system, workpiece fixturing is the first faced key problem during the machining process.
Guohua Qin

2. Analysis of Locating Determination

Abstract
Locating determination is the precondition to design of locating point layout scheme. if the workpiece locating is unreasonable and non-deterministic, it is not significant to design the locating point layout scheme.
Guohua Qin

3. Analysis of Workpiece Stability

Abstract
The fixturing of workpiece in a fixture is a unified process in which locating and clamping are closely related to each other.
Guohua Qin

4. Analysis of Clamping Reasonability

Abstract
Because the workpiece is affected by machining force, inertia force, gravity and other external forces in the machining process, some clamps are used to exert clamping forces to press the workpiece against locators.
Guohua Qin

5. Analysis of Workpiece Attachment/Detachment

Abstract
The attachment and detachment can reflect the possibility of placing a workpiece in the fixturing layout.
Guohua Qin

6. Analysis of Locating Accuracy

Abstract
By analyzing the movement mechanism of a workpiece in fixture locating scheme, the locating error which can measure a fixture locating performance is formulized as a function of the workpiece position error by the technology of coordinate transformation.
Guohua Qin

7. Selection Algorithm of Locating Datum

Abstract
The selection of locating datum is one of main contents in computer aided process planning.
Guohua Qin

8. Planning Algorithm of Locating Point Layout

Abstract
In the metal cutting process, the successful obtainment of a surface depends on the correct position of the workpiece with respect to the cutting tool.
Guohua Qin

9. Planning Algorithm of Clamping Forces for Rigid Workpieces

Abstract
In the process of machining, the workpiece will be exerted by cutting forces and cutting torques.
Guohua Qin

10. Determination Method of Clamping Point Layout for Rigid Workpieces

Abstract
The clamping force provided by the clamping device aims at resisting the cutting force or cutting torque which can upset the reasonable position obtained during locating.
Guohua Qin

11. Fixturing Layout Optimization of Thin-Walled Workpieces

Abstract
In the fixturing process with the multiple clamps, the different fixturing layout, which is described by fixturing parameters including the fixturing sequence.
Guohua Qin

12. Matching Method of Fixture Elements

Abstract
It is an important task in fixture design to match the fixture elements according to the fixturing layout scheme.
Guohua Qin
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