Building block for a mechanical construction

Patent metadata

Field	Value
Publication number	US-10093062-B2
Application number	US-201415106797-A
Country	US
Kind code	B2
Filing date	Dec 18, 2014
Priority date	Dec 18, 2013
Publication date	Oct 9, 2018
Grant date	Oct 9, 2018

Abstract

The invention provides a building block for a mechanical construction. The invention further provides a bearing and a method of producing the building block. The building block provides a first printed material printed via an additive manufacturing process on or at least partially embedded in a second material. The first printed material is printed in a pattern configured and constructed for cooperating with a sensor for providing position information of the building block relative to the sensor. The sensor may be a magnetic sensor or an optical sensor. The first printed material may include magnetic particles. The method of producing the building block may include a step of adding the first printed material to the second material via the additive manufacturing process under the influence of a predefined magnetic field.

First claim

The invention claimed is:

1. A building block for a mechanical construction, the building block comprising:
a first printed material printed via an additive manufacturing process on or at least partially embedded in a second material,
wherein the first printed material is printed in a pattern configured and constructed for cooperating with a sensor for providing position information of the building block relative to the sensor,
wherein the pattern of the first printed material comprises a first pattern and a second pattern, the first pattern provides a first signal to the sensor, the second pattern provides a second signal to the sensor, the second signal being different from the first signal, the second pattern comprising a different number of encoding elements then the first pattern, and
wherein the encoding elements of the second pattern being coaxially arranged and shifted relative to the first pattern relative to provide a combination of the first and second signals that generates an absolute positioning of a gear wheel of the mechanical construction relative to the sensor.

2. The building block according to claim 1 , wherein at least a part of the building block is constituted of the second material being second printed material printed via an additive manufacturing process.

3. The building block according to claim 2 , wherein the first printed material is completely embedded in the second printed material, or wherein the first printed material is covered by a third material.

4. The building block according to claim 2 , wherein an interface between the first printed material and the second printed material comprises a functionally graded interface layer, a composition of the functionally graded interface layer is configured to gradually change from the first printed material via a mixture of the first printed material and the second printed material to the second printed material.

5. The building block according to claim 1 , wherein the first printed material:
comprises magnetic particles for cooperating with a magnetic sensor, or
constitutes a reflective pattern for cooperating with an
optical sensor, or
constitutes a contrasting pattern relative to the second material for cooperating with an optical sensor, or
constitutes an opaque pattern surrounded by the second material constituting a reflective surface for cooperating with the optical sensor, or
constitutes a transmissive pattern surrounded by the second material being opaque for cooperating with the optical sensor, or
constitutes an opaque pattern surrounded by the second material being transmissive for cooperating with the optical sensor.

6. The building block according to claim 1 , wherein the pattern of the first printed material is configured and constructed for generating a block-wave signal at the sensor during a relative movement, or
wherein the pattern of the first printed material is configured and constructed for generating a sinusoidal-wave signal at the sensor during the relative movement, or
wherein the pattern of the first printed material is configured and constructed for generating a saw-tooth signal at the sensor during the relative movement.

7. The building block according to claim 1 , wherein the first printed material and/or the second printed material is chosen from a list comprising metals, ceramics, polymers, elastomer and their combination in composite materials.

8. The building block according to claim 1 , wherein the building block is one of:
an inner ring for a bearing,
an outer ring for the bearing,
a seal of the bearing,
an traveling unit for an actuator,
an encoder disc for an angular sensor, or
a gear wheel.

9. A bearing comprising:
a building block having;
a first printed material printed via an additive manufacturing process on or at least partially embedded in a second material,
wherein the first printed material is printed in a pattern configured and constructed for cooperating with a sensor for providing position information of the building block relative to the sensor,
wherein the pattern of the first printed material comprises a first pattern and a second pattern, the first pattern provides a first signal to the sensor, the second pattern provides-a second signal to the sensor, the second signal being different from the first signal, the second pattern comprising a different number of encoding elements then the first pattern, and
wherein the encoding elements of the second pattern being coaxially arranged and shifted relative to the first pattern relative to provide a combination of the first and second signals that generates an absolute positioning of a gear wheel of the mechanical construction relative to the sensor.

10. A method of producing a building block for a mechanical construction, the method comprising:
printing of a first printed material via an additive manufacturing process on or at least partially embedded in a second material,
wherein the first printed material is printed in a pattern configured and constructed for cooperating with a sensor for providing position information of the building block relative to the sensor,
wherein the pattern of the first printed material comprises a first pattern and a second pattern, the first pattern provides a first signal to the sensor, the second pattern provides-a second signal to the sensor, the second signal being different from the first signal, the second pattern comprising a different number of encoding elements then the first pattern, and
wherein the encoding elements of the second pattern being coaxially arranged and shifted relative to the first pattern relative to provide a combination of the first and second signals that generates an absolute positioning of a gear wheel of the mechanical construction relative to the sensor.

11. A method of producing the building block according to claim 10 , wherein the first printed material comprises magnetic particles, wherein the method of producing the building block comprises a step of:
adding the first printed material to the second material via the additive manufacturing process under the influence of a predefined magnetic field.

Assignees

• Skf Ab

Inventors

• Sanz Alejandro
• Barbera Stellario

Classifications

• F16C19/52

  with devices affected by abnormal or undesired conditions · CPC title

• F16C33/38

  Ball cages · CPC title

• B33Y50/00

  Data acquisition or data processing for additive manufacturing · CPC title

• B29L2015/00

  Gear wheels or similar articles with grooves or projections, e.g. control knobs · CPC title

• B29K2995/0008

  Magnetic or paramagnetic · CPC title