barcode scanner code in asp.net MACHINING AND ROUTING in Software

Creator QR Code in Software MACHINING AND ROUTING

MACHINING AND ROUTING
QR Code JIS X 0510 Reader In None
Using Barcode Control SDK for Software Control to generate, create, read, scan barcode image in Software applications.
QR Code JIS X 0510 Generation In None
Using Barcode generation for Software Control to generate, create QR image in Software applications.
FIGURE 35.13
Recognize QR Code In None
Using Barcode reader for Software Control to read, scan read, scan image in Software applications.
Encoding QR Code 2d Barcode In Visual C#.NET
Using Barcode creation for VS .NET Control to generate, create Denso QR Bar Code image in .NET applications.
Single-pin method.
Creating QR Code JIS X 0510 In .NET Framework
Using Barcode encoder for ASP.NET Control to generate, create Quick Response Code image in ASP.NET applications.
QR Code Encoder In .NET
Using Barcode encoder for .NET Control to generate, create QR image in .NET framework applications.
FIGURE 35.14 Double-pin method.
Make QR In VB.NET
Using Barcode maker for .NET Control to generate, create QR Code JIS X 0510 image in .NET applications.
Barcode Encoder In None
Using Barcode generation for Software Control to generate, create barcode image in Software applications.
SCORING
Encode Data Matrix In None
Using Barcode printer for Software Control to generate, create Data Matrix ECC200 image in Software applications.
Code128 Generator In None
Using Barcode drawer for Software Control to generate, create Code128 image in Software applications.
Scoring is a circuit board fabrication method used to make long, straight cuts quickly, and therefore is often used to create rectangular profile board shapes. More commonly, however, it is used in concert with CNC routing for complex shapes, enabling each tool to be used to its unique advantage. When used with routing, scoring has a much wider application and can provide simple breakaway for complex profiles (Fig. 35.15).
Generating USS Code 39 In None
Using Barcode creator for Software Control to generate, create Code39 image in Software applications.
Barcode Drawer In None
Using Barcode generation for Software Control to generate, create barcode image in Software applications.
Routed features Module or panel Routed features Score lines Score lines (a) (b)
Paint UPC-E Supplement 2 In None
Using Barcode encoder for Software Control to generate, create UCC - 12 image in Software applications.
Reading Bar Code In .NET
Using Barcode recognizer for VS .NET Control to read, scan read, scan image in .NET applications.
FIGURE 35.15 Scoring processes: (a) module or panel with typical scoring lines and routed corners; (b) scoring lines and routed complex features.
Paint DataMatrix In None
Using Barcode maker for Excel Control to generate, create Data Matrix image in Microsoft Excel applications.
Barcode Generator In .NET Framework
Using Barcode encoder for .NET framework Control to generate, create bar code image in VS .NET applications.
Scoring Application Scoring is accomplished by machining a shallow, precise V-groove into the top and bottom surfaces of the laminate, generally with the use of CNC equipment. The two most significant elements of the score line are as follows:
Make Data Matrix In .NET
Using Barcode generation for .NET Control to generate, create ECC200 image in .NET framework applications.
Barcode Maker In Java
Using Barcode creation for Android Control to generate, create barcode image in Android applications.
The positional accuracy from the reference feature (usually the registration hole) The depth of the score, which determines the web thickness
Printing Code 128C In .NET
Using Barcode generation for .NET framework Control to generate, create Code 128 Code Set B image in Visual Studio .NET applications.
Making GS1 RSS In Java
Using Barcode generation for Java Control to generate, create GS1 RSS image in Java applications.
The final edges of a scored circuit board are yielded by breaking the panel, or border, at the score line (Fig. 35.16). The angle of the cutting tool is reflected in the V-groove geometry, and limiting this angle to 30 to 90 will minimize the score line intrusion into traces near the edges of the circuit board. The score line exposes the laminate glass fibers and resin. Measurements from these surfaces will vary greatly, even though the score line is precisely machined
PRINTED CIRCUITS HANDBOOK
Positional accuracy Registration hole or dimension hole To break Score depth
Web Misalignment 30 90
Board cross-section
FIGURE 35.16
Cross section of board, showing finished V-groove and break.
(Fig. 35.13). These irregular surfaces will be noticed as dimensional growth and should be considered in design or planning when designated as a scored edge. Positional accuracy Board cross-section Registration hole or dimension hole Misalignment Web Score depth To break 30 90 The dimensional accuracy of the final board is determined by the degree of precision with which the following are performed:
Misalignment within 0.003 in. of the score line from the desired location Web thickness within 0.006 in. of the designated dimension
Typically, a nominal web thickness is 0.020 in. for 0.060 in. thick FR-4 boards and 0.014 in. for 0.030 in. thick FR-4 laminate. For CEM-1 or CEM-3 materials, 0.040 in. and 0.024 in. nominal web thickness values apply, respectively. These web thickness values enable sufficient module strength to avoid accidental or premature score separation while providing simple breaking efforts without excessive edge roughness or growth.
Operation Two major types of panel scoring systems are available:
Dedicated CNC scoring machines utilizing high-speed carbide or diamond-embedded cutter blades, operating as a pair, one on each side of the board. This generates the V-groove on each side simultaneously Drills or driller/routers equipped with scoring software and spade type carbide bits, generating score lines on one side of the panel at a time (Fig. 35.14)
35.5.2.1 Dedicated Scoring Equipment. The dedicated CNC scoring machines are highproduction, precision computer-driven machines. With an exception or two, they utilize blade type cutting tools of all-carbide or with carbide inserts, as well as diamond-embedded varieties, and are designed to self-center the panel. The panel feed rate is high due to the blade s ability to operate at high-surface-feet cutting rates. Scoring both sides simultaneously with one pass contributes greatly to elevated production processing. This equipment utilizes pin or edge registration, with positioning of score lines and steps by programmed instructions.The vertical adjustment of the cutter blades permits variation in V-groove depth, and on many models jump scoring is available. The ability to do jump scoring, or score/no-score segments along a simple line at desired points, is programmable.
MACHINING AND ROUTING
35.5.2.2 Multiple-Role Machines. Scoring with CNC drillers or driller/router machines equipped with scoring software produces score lines only on one side of the panel per machine cycle, although each spindle can be used. The panel and program data must be flipped to score the second side. The panel registration method is similar to that of routing, using existing tooling holes to pin the panel to the machined tooling plates. The tooling plates must be machined flat to ensure uniformity of score depth. Brush-type spindle pressure foot inserts should be used to apply downward pressure during score line cutting. Spade-type carbide tools of various angles and configurations are used in the spindles. Typically, multiple passes (two or three) may be required to produce a clean, uniform score line.
Copyright © OnBarcode.com . All rights reserved.