BOOK_CONTENT
From Mass Finishing Handbook

OVERVIEW

The fundamentals of burr technology rely on a few simple concepts:

  1. Burr properties are a function of:

    • material properties

    • machining/blanking process

    • part configuration

  2. Acceptable deburring quality is a function of:

    • burr properties

    • part configuration

    • acceptance standards

    • deburring process parameters

  3. Cost effective deburring is a function of:

    • acceptable deburring quality

    • scheduled quantities

    • cycle time

    • environmental, safety, and health issues

  4. There are five basic approaches to reducing deburring costs:

    • improvement of product design

    • prevention of burrs

    • minimization of burr properties

    • removal of burrs during the machining/ blanking cycle

    • development of innovative variations of existing processes.

These concepts are described throughout 120 pages in Deburring and Edge Finishing Handbook (Gillespie 1999); only those that are directly applicable to mass finishing will be discussed here.

5.1 EFFECTS OF BURR SIZE

The sixth rule, as noted in Chapter 4, is reiterated here and the next basic consideration is given beneath it, rule #7:

Rule #6: Like deburring and surface finishing, mass finishing will change key part attributes.

Rule #7: Minimizing burr size reduces deburring costs and problems.

Mass finishing can grind off any size burr if it is positioned appropriately and if other side effects are not important. Typically, however, these side effects are important, as mentioned in the previous chapter. Therefore, it is necessary to know how big the burr is before good decisions on economic removal can be made.

Figure 5-1 provides some starting definitions for burr properties. Burr thickness is the most important property and it also is...

Copyright Industrial Press Inc. 2007 under license agreement with Books24x7

Products & Services
Deburring and Deflashing Services
Deburring and deflashing services serve to round sharp edges or corners and remove flash or parting lines from forging, casting or molding operations.
Rotary Burs
Rotary burs are cutting tools with many closely-spaced cutting edges, often with negative rake angle, for finishing or deburring edges.
Robotic Deburring Tools
Robotic deburring tools are robotic end-effectors for removing burrs, flashing, and other unwanted edge properties caused by cutting or machining.
Deburring and Chamfering Tools
Deburring and chamfering tools are used to clean edges after machining. Deburring tools remove flashing and other unwanted edge properties caused by cutting or machining. A chamfer is a beveled edge at the intersection of two surfaces so the surfaces are typically at 45 degrees.
Blasting Media and Abrasives
Blasting media and abrasives are consumables used in surface preparation processes, such as sandblasting and peening.

Topics of Interest

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