Device for positioning at least one functional element

Patent metadata

Field	Value
Publication number	US-9309953-B2
Application number	US-201414203536-A
Country	US
Kind code	B2
Filing date	Mar 10, 2014
Priority date	Mar 11, 2013
Publication date	Apr 12, 2016
Grant date	Apr 12, 2016

Abstract

A device for positioning at least one functional element having a hub for a shaft in a predefined angle position on the shaft includes at least one holder for receiving at least one functional element. The device may include a tailstock or coaxially aligning the shaft in relation to the hub of the at least one functional element. The tailstock may include a centring cone for receiving the shaft. The centring cone may be axially displaceable in relation to the tailstock. The tailstock may include radially expandable centring elements for centring the functional element. The centring elements may assume a defined position against the hub of the functional element in an extended position. The device may also include a movable guide block for moving the shaft.

First claim

The invention claimed is:

1. A device for positioning at least one functional element having a hub for a shaft in a predefined angle position on the shaft, the device comprising:
at least one holder for receiving at least one functional element,
a tailstock for coaxially aligning the shaft in relation to the hub of the at least one functional element,
the tailstock including centring cone for receiving the shaft, the centring cone axially displaceable in relation to the tailstock, and radially expandable centring elements for centring the functional element, wherein the centring cone is coupled to the centring elements such that, when the the centring cone is displaced axially, the centring elements move in a radial direction, wherein
the centring elements assume a defined position against the hub of the functional element in an extended position, and
a movable guide block for moving the shaft.

2. The device according to claim 1 , wherein the defined position of the centring elements in the extended position includes a clearance from the hub of the functional element, the clearance being smaller than a clearance between the hub of the functional element and the shaft.

3. The device according to claim 2 , wherein at least one of:
the holder has at least a partial negative contour of the at least one functional element for receiving the at least one functional element in an angle-precise position, and
the holder has a stop and the tailstock is rotatable.

4. The device according to claim 2 , wherein the tailstock includes a shifting mechanism for actuating the centring elements.

5. The device according to claim 1 wherein the centring elements contact the hub of the functional element and fix the functional element in the extended position.

6. The device according to claim 5 , wherein at least on of:
the holder has at least a partial negative contour of the at least one functional element for receiving the at least one functional element in an angle-precise position, and
the holder has a stop and the tailstock is rotatable.

7. The device according to claim 5 , wherein the tailstock includes a shifting mechanism for actuating the centring elements.

8. The device according to claim 1 , wherein the tailstock includes at least three centring elements.

9. The device according to claim 1 , wherein the tailstock includes a shifting mechanism for actuating the centring elements.

10. The device according to claim 9 , wherein the shifting mechanism is at least one of hydraulic and pneumatic.

11. The device according to claim 9 , wherein the tailstock includes a spring for actuating the centring elements, the spring configured to prestress at least one centring element against the hub with a predefined force.

12. The device according to claim 1 , wherein the tailstock includes a spring for actuating the centring elements, the spring configured to prestress at least one centring element against the hub with a predefined force.

13. The device according to claim 1 , wherein at least one of:
the holder has at least a partial negative contour of the at least one functional element for receiving the at least one functional element in an angle-precise position, and
the holder has a stop and the tailstock is rotatable.

14. The device according to claim 1 , wherein the at least one functional element includes at least one of a balancing weight, a gear, a cam and a bearing.

Assignees

• Mahle Int Gmbh

Inventors

• Menonna Antonio

Classifications

• F16H53/025

  characterised by their construction, e.g. assembling or manufacturing features · CPC title

• F16B4/006

  Shrinkage connections, e.g. assembled with the parts being at different temperature · CPC title

• F16D1/0858

  due to the elasticity of the hub (including shrink fits) · CPC title

• B23P2700/02

  Camshafts · CPC title

• Y10T74/18056

  Rotary to or from reciprocating or oscillating · CPC title