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Precision Sleeve Extractor for Profiler Spindles

IP.com Disclosure Number: IPCOM000039146D
Original Publication Date: 1987-Apr-01
Included in the Prior Art Database: 2005-Feb-01
Document File: 2 page(s) / 53K

Publishing Venue

IBM

Related People

Prescott, TO: AUTHOR [+3]

Abstract

Profiler machines are used to drill holes and profile surfaces. A typical profiler spindle assembly 1 (Fig. 1) consists of a cutting bit 2 held by a collet 3 which is tightened by a sleeve 4 when the tapered collet 3, as seen in the partial cross-sectional view of assembly 1 in Fig. 2, is drawn up into sleeve 4. The sleeve 4 is locked inside a slinger 5 by a retainer nut 6. The collet 3 is held by a motor armature 7. Because the spindle assembly 1 is constructed with close tolerances, the sleeve 4 tends to freeze or cohere to the internal surface of the slinger 5. The removal of a frozen sleeve often involves the removal of the entire motor/spindle assembly 1. A precision sleeve extractor which removes frozen sleeves, without the need of removing the entire assembly, works in the following manner.

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Precision Sleeve Extractor for Profiler Spindles

Profiler machines are used to drill holes and profile surfaces. A typical profiler spindle assembly 1 (Fig. 1) consists of a cutting bit 2 held by a collet 3 which is tightened by a sleeve 4 when the tapered collet 3, as seen in the partial cross- sectional view of assembly 1 in Fig. 2, is drawn up into sleeve 4. The sleeve 4 is locked inside a slinger 5 by a retainer nut 6. The collet 3 is held by a motor armature 7. Because the spindle assembly 1 is constructed with close tolerances, the sleeve 4 tends to freeze or cohere to the internal surface of the slinger 5. The removal of a frozen sleeve often involves the removal of the entire motor/spindle assembly 1. A precision sleeve extractor which removes frozen sleeves, without the need of removing the entire assembly, works in the following manner.

(Image Omitted)

The collet 3 (Fig. 2) is removed from the spindle assembly 1 and the precision sleeve extractor assembly 8 is prepared for sleeve extraction by rotating a gripper control knob 9 to rotate shaft 18, counterclockwise, to its fully released position. Shaft 18 extends into hollow gripper shaft 15 where both shafts 18 and 15 engage with mating threads (not seen). When shaft 18 is fully released from the gripper head 16, the gripper head 16 decreases in diameter as shaft 18 is withdrawn. The extracting handwheel 10 is then rotated counterclockwise to its fully retracted position where it contacts a supporting t...