Segment collet

Patent metadata

Field	Value
Publication number	US-9987690-B2
Application number	US-201615139665-A
Country	US
Kind code	B2
Filing date	Apr 27, 2016
Priority date	Apr 27, 2015
Publication date	Jun 5, 2018
Grant date	Jun 5, 2018

Abstract

A segment collet, which includes at least two clamping segments, each of which has a receptacle, in which a coupling ring is accommodated, which connects the clamping segments to each other. A securing device is provided to connect the coupling ring to the clamping segments for the purpose of limiting the axial mobility of the clamping segments relative to the coupling ring as well as to fix their circumferential position. The invention furthermore relates to a coupling ring for a segment collet.

First claim

What is claimed is:

1. A segment collet comprising:
at least two clamping segments, each of the at least two clamping segments having a receptacle in which a coupling ring is accommodated, which connects the clamping segments to each other; and
a securing device to connect the coupling ring to the clamping segments for limiting an axial mobility of the clamping segments relative to the coupling ring as well as to fix their circumferential position,
wherein each clamping segment is composed of a segment body, a segment head being disposed on a first end of the clamping segment, and a segment foot being disposed on second end of the clamping segment opposite the first end,
wherein the receptacle is formed in the segment foot,
wherein the securing device is assigned to the receptacles and includes one of a groove or a raised section that extends in a radial direction of the segment collet, and
wherein the coupling ring includes a securing section accommodated in the receptacles and having another one of the groove or the raised section that is formed on a circumferential surface of the coupling ring and that extends in the radial direction of the segment collet so as to engage with the one of the groove and the raised section of the securing device.

2. The segment collet according to claim 1 , wherein the coupling ring includes web sections connecting the securing sections to each other.

3. The segment collet according to claim 2 , wherein the web sections have a wave shape.

4. The segment collet according to claim 2 , wherein the web sections have at least one contact wall for contact with a flank of the clamping segments.

5. The segment collet according to claim 4 , wherein the clamping segments are supported on the coupling ring in a form-fitting manner by the contact walls of two adjacent web sections.

6. The segment collet according to claim 2 , wherein the securing sections are additionally integrally secured in the receptacles of the clamping segments.

7. The segment collet according to claim 1 , wherein the recess designed as a latching receptacle is oriented radially, and the securing element, also disposed in the radial direction and designed as a latching element, engages with the latching receptacle.

8. The segment collet according to claim 7 , wherein the latching elements are assigned to the coupling ring and are radially elastically deformably supported on the securing sections.

9. The segment collet according to claim 1 , wherein the recesses are formed on the receptacles of the clamping segments in the axial direction, and the securing elements are disposed on the securing sections of the coupling ring.

10. The segment collet according to claim 9 , wherein the recesses are designed with a smaller diameter than the diameter of the securing elements.

11. The segment collet according to claim 9 , wherein at least one of the recesses has a roughened surface and/or a thread cut, and the securing elements of the coupling ring are pressed into the recesses.

12. The segment collet according to claim 1 , wherein the securing elements are assigned to the receptacles of the clamping segments, the securing elements are designed as securing pins, which are pressed into pockets formed in the receptacles of the clamping segments, and the recesses designed as openings with play for the securing pins are formed on the securing sections of the coupling ring.

13. A coupling ring for a segment collet according to claim 1 , wherein the securing sections are disposed in alternating order, web sections interconnecting the securing sections are provided, and the securing element is assigned to the securing sections for limiting the axial mobility of clamping segments and to fix their position circumferentially on the coupling ring.

14. The coupling ring according to claim 13 , wherein the web sections and/or the securing sections are formed from an elastomer or from a plastic.

15. The coupling ring according to claim 13 , wherein the securing element is disposed on the securing section radially or perpendicularly to the circumferential direction.

16. The coupling ring according to claim 15 , wherein the securing element is formed from a spring-mounted latching element or from a compressible tab or includes a securing recess and a securing web.

17. The coupling ring according to claim 13 , wherein the web section includes a spring-mounted element.

18. The coupling ring according to claim 17 , wherein the spring-mounted element has a wave shape.

19. The coupling ring according to claim 13 , wherein the area of the cross section of the securing section is designed to be smaller than the area of the cross section of the web section.

20. The coupling ring according to claim 13 , wherein the securing section has an axial opening for the passage with play of a securing element.

Assignees

• Roehm Gmbh

Inventors

• Kempter Stefan
• Dolpp Andreas

Classifications

• F16B21/10 Primary

  by separate parts ({F16B21/06 takes precedence}; key-type connection F16B3/00; locking screws or nuts against rotation by such means F16B39/04) · CPC title

• B23B31/103

  Retention by pivotal elements, e.g. catches, pawls · CPC title

• B23B29/046

  with an intermediary toolholder · CPC title

• B23B31/265 Primary

  by means of collets · CPC title

• B23B2226/33

  Elastomers, e.g. rubber · CPC title