Claims
- 1. A method of determining the minimum number of segments of a collet at which the collet is able to grip different diameter cutting tools with a sufficient gripping force over a large range of tool diameters, the collet having a truncated conical portion and a cylindrical portion divided by a plurality of slits therin parallel to the axis of the collet into segments having a predetermined length and a predetermined radial thickness sufficient for being able to withstand a predetermined pull-in force on the collet; the method comprising:
- determining the minimum angle .THETA. subtended by a segment less than which the total of the geometrical moments of inertial of the cross-sections of all of the segments in the cylindrical portion, all of which have the same cross-section, does not substantially change, the moment of inertia of the respective sections being the moment of inertial about an axis through the centroid of the cross-sectional area of the respective segment in the cylindrical portion and perpendicular to a radius of the collet through the centroid; and
- establishing the minimum number as the nearest whole number to 360.degree./.THETA.(.+-.2).
Priority Claims (1)
Number |
Date |
Country |
Kind |
63-126801 |
May 1988 |
JPX |
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Parent Case Info
This application is a continuation of now abandoned application, Ser. No. 07/459,835 filed on Jan. 18, 1990.
US Referenced Citations (2)
Number |
Name |
Date |
Kind |
3246903 |
Sattler |
Apr 1966 |
|
3583714 |
Weltzer et al. |
Jun 1971 |
|
Foreign Referenced Citations (1)
Number |
Date |
Country |
205709 |
Dec 1986 |
JPX |
Continuations (1)
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Number |
Date |
Country |
Parent |
459835 |
Jan 1990 |
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