By Yiming (Kevin) Rong, Samuel Huang
Fixtures--the part or meeting that holds a component present process machining--must be designed to slot the form of that half and the kind of machining being performed. This e-book discusses the basics of Computer-Aided Fixture layout (CAFD) strategies and covers fixture making plans, fixture layout (both modular and committed fixtures), fixture layout verifications, and the general integration with CAD/CAM. The ebook exhibits how CAFD could lead to an important aid of product and method improvement time and construction rate, and the way CAFD can elevate caliber insurance via simulation and science-based technical specification and price estimation in enterprise quoting, specifically in present supplier-based production. It additionally offers case learn examples. * This ebook offers a complete answer of CAFD, together with making plans, layout, and layout verification* functional and entire theoretical research of fixturing from genuine commercial software tasks* Introduces the combination of fixture layout and research with CAD/CAM in order that specified geometric details may be processed and intricate fixture designs could be designed and analyzed
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Additional resources for Advanced Computer-Aided Fixture Design
It is our view that the optimality of a setup plan should not be defined universally. Rather, it should be determined by designers and process planners based on a particular production environment. This is consistent with our philosophy of “computer-assisted human-centered” manufacturing. 2 Tolerance Analysis in Setup Planning As previously mentioned, we view tolerance analysis as a driving factor in deriving good setup plans. The reason is that tolerance analysis can be used to devise a setup plan that improves part quality without increasing cost and prolonging cycle time.
14 into Eq. 15. 16) If Eq. 16 holds, then all points on the profile can be controlled within the range of the tolerance zone. In general, solving the equation ∂F = 0 ∂ϕ will allow one to find the point that has the maximum deviation, and hence compute the value of normalized tolerance. Profile of a Surface. When a profile of a surface control is specified, the tolerance zone is a uniform 3D boundary. The surface being controlled must reside within the profile tolerance zone to be accepted. The tolerance zone for the profile of a surface is the region constricted by the two enveloping surfaces consisting of spheres whose diameters equal to the tolerance value δ.
Examples of machine motion. CH4 CH3 D1 H1 CH2 CH1=H1+delta_H1 CH2=H-H1*2+delta_H2 CH3=H1+delta_H1 CH4=CH4 H CH1 D approaching_value = 3 L12 = H+6 m m; Drilling L23 = CH1+CH2+CH3-H; Cham fer & spot face L34 = CH1; Cutter offset R44 = (D-CD1)/2; Back chamfer --- Tool path param eters are driven by both feature and cutter parameters. 26. An example of cutter design and tool-path design. Name Management information Vendor information Machine type (horizontal/ vertical) Machine tool Machine coordinate N o.
Advanced Computer-Aided Fixture Design by Yiming (Kevin) Rong, Samuel Huang