Wednesday, July 31, 2013

GMT Expanding Mandrel


Expanding mandrels are the ideal solution to various internal clamping problems. Expanding mandrels provide the benefits of versatility and accuracy when compared to other workholding methods. The power operated, flange type expanding mandrels can be used on any machine with drawbar facility. The natural pull back action of the sleeve ensures the component is resting against the locating face. There is high clamping force due to the clamping sleeve being in contact along its entire length through double angle.

Expanding mandrels provide the following workholding features:
  • Quick and secure clamping
  • Positive location against backstops
  • Controlled datums
  • Uniform expansion
  • Positioning accuracy
  • Sleeve interchangeability - As sleeves in one type are interchangeable, one single expanding mandrel covers a very large clamping range.
  • No pressure marks in the clamped bore. Easy loading.
Expanding mandrels may be dedicated to one component or a range of component types and sizes, locating in and gripping component bores.

8 comments:

  1. How much will be the collet expansion?

    ReplyDelete
    Replies
    1. It can be expanded upto 0.5mm but considering accuracy and consistency H9 tolerance zone is recommended in components. Write to us with your specific requirement and we will provide a solution.

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  2. what should be tolerance in the components for using Expanding mandrels?

    ReplyDelete
    Replies
    1. H9 tolerance zone is recommended in components for accuracy and repeatability

      Delete
  3. What is the use of a expanding mandrel?

    ReplyDelete
    Replies
    1. The expanding mandrel can be used for turning, milling , grinding and gear hobbing operations.

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  4. What are the benefits if I use the expanding mandrel ?

    ReplyDelete
    Replies
    1. The benefits are:
      1. High accuracy and positioning repeatability
      2. High clamping force because of the axial movement of the clamping sleeve during actuation against the fixed arbor.
      3.Improved productivity due to quick set up time.

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