Device for the extraction, parallel to the process, of processing products arising during the processing of a workpiece

Patent metadata

Field	Value
Publication number	US-9527182-B2
Application number	US-201214001623-A
Country	US
Kind code	B2
Filing date	Feb 22, 2012
Priority date	Mar 4, 2011
Publication date	Dec 27, 2016
Grant date	Dec 27, 2016

Abstract

A device for the extraction of processing products includes a double-walled extraction hood, which has a first inner housing part and a second outer housing part arranged at a distance from the first inner housing part. The two housing parts are arranged coaxial with each other and partially within each other in such a way that an air channel is formed between the two housing parts. The air channel has a front end that can be aligned with the workpiece and a rear end opposite the front end. A flow directed from the front end to the rear end can be created in the air channel. The extraction hood, in particular the inner housing part of the extraction hood, is designed to accommodate at least part of the processing device and can be connected thereto.

First claim

What is claimed is:

1. A device for the extraction of a processing product during processing of a workpiece, comprising a double-walled extraction hood having a first inner housing part and a second outer housing part which is arranged at a distance from the first inner housing part, said first and second housing parts having an axis and are arranged in coaxial relationship one within the other to thereby form an air channel between the first and second housing parts, said air channel having a front end, which is adapted for alignment with the workpiece, and a rear end, which is arranged opposite to the front end and communicates with a deflection chamber that is connectable with a vacuum generator and is formed circumferentially around the first inner housing part with a width that is greater than a width of the second outer housing part, said air channel provided to direct a flow from the front end to the rear end, said extraction hood accommodating at least part of a processing device for processing the workpiece and being connectable thereto, wherein said deflection chamber has an uninterrupted circumferential wall bounding a smaller space at one radial side and a larger space at another opposite radial side, an axial circumferential inlet communicating with the rear end of the air channel and a straight axial outlet extending from the larger space of the deflection chamber parallel to the axis of the first and second housing parts and guiding a flow out of the deflection chamber in an axial direction.

2. The device of claim 1 , wherein the inner housing part of the extraction hood accommodates at least the part of the processing device and is connectable thereto.

3. The device of claim 1 , wherein the first and second housing parts define an inner housing part and an outer housing part, each having a front end to define therebetween a space to accommodate a front end section of the processing device.

4. The device of claim 1 , wherein the first and second housing parts define an inner housing part and an outer housing part, said inner housing part having a region defined by an internal diameter which is slightly greater than an external diameter of the processing device in an area of the region, said region of the inner housing part accommodating of at least the part of the processing device.

5. The device of claim 4 , wherein the region of the inner housing part is constructed for receiving at least the part of the processing device by a precision fit.

6. The device of claim 1 , wherein the first and second housing parts define an inner housing part and an outer housing part, said outer housing part having a conically tapering front end piece to complement a contour of the processing device in the region.

7. The device of claim 1 , wherein the first and second housing parts define an inner housing part and an outer housing part, said outer housing part having a multipart configuration with several segments of which at least a first plurality of segments is detachable from the inner housing part and movable from a position forming a closed state of the extraction hood into a position forming an opened state of the extraction hood, and vice versa.

8. The device of claim 7 , wherein the outer housing part as a whole is detachable form the inner housing part.

9. The device of claim 7 , further comprising a drive capable of moving the first plurality of segments of the outer housing part back in a linear movement with respect to the extraction hood.

10. The device of claim 7 , wherein the first plurality of segments is movable away from a longitudinal axis of the extraction hood.

11. The device of claim 7 , wherein the first plurality of segments is pivotable about an axis which extends in parallel or orthogonal relation to a longitudinal axis of the extraction hood.

12. The device of claim 1 , wherein the outer housing part has a front end, and further comprising a brush attachment provided connected to the front end of the outer housing part.

13. The device of claim 12 , wherein the brush attachment is of multipart construction.

14. The device of claim 1 , wherein at least one of the first and second housing parts is constructed rotation-symmetrically with respect to a longitudinal axis of the extraction hood.

15. The device of claim 1 , wherein the processing device has a drive unit, a tool holder device, and a tool insertable in the tool holder device and operably connected to the drive unit.

16. The device of claim 15 , wherein the drive unit is constructed for generating a rotary movement of the tool.

17. The device of claim 15 , wherein the tool is a machining tool.

18. The device of claim 17 , wherein the machining tool is a milling spindle.

19. The device of claim 15 , wherein the first and second housing parts define an inner housing part and an outer housing part, each having a front end to define there between a space for receiving the tool.

20. The device of claim 15 , wherein the first and second housing parts define an inner housing part and an outer housing part, each having a front end to define there between a space for receiving at least part of the tool holder device.

21. The device of claim 20 , wherein the drive unit is connected in a substantially airtight manner with a cylinder piece of the inner housing part.

22. A device for the extraction of a processing product during processing of a workpiece, comprising a double-walled extraction hood having a first inner housing part and a second outer housing part which is arranged at a distance from the first inner housing part, said first and second housing parts having an axis and are arranged in coaxial relationship one within the other to thereby form an air channel between the first and second housing parts, said air channel having a front end, which is adapted for alignment with the workpiece, and a rear end, which is arranged opposite to the front end, said air channel provided to direct a flow from the front end to the rear end, said extraction hood accommodating at least part of a processing device for processing the workpiece and being connectable thereto, wherein the first and second housing parts define an inner housing part and an outer housing part, and wherein the outer housing part is composed of a plurality of individual intake tubes which are joined together and form an inlet channel, and a deflection chamber which has an uninterrupted circumferential wall, an axial inlet communicating with the rear end of the air channel and an axial outlet guiding a flow out of the deflection chamber in an axial direction, wherein said deflection chamber has an uninterrupted circumferential wall bounding a smaller space at one radial side and a larger space at another opposite radial side, an axial circumferential inlet communicating with the rear end of the air channel and a straight axial outlet extending from the larger space of the deflection chamber parallel to the axis of the first and second housing parts and guiding a flow out of the deflection chamber in an axial direction.

23. A device for the extraction of a processing product during processing of a workpiece, comprising a double-walled extraction hood having a first inner housing part and a second outer housing part which is arranged at a distance from the first inner housing part, said first and second housing parts having an axis and are arranged in coaxial relationship one within other to thereby form an air channel between the first and second hous

Assignees

• Eickens Sebastian
• Jansen Markus
• Krauss Maffei Tech Gmbh

Inventors

• Eickens Sebastian
• Jansen Markus

Classifications

• B23B2270/30

  Chip guiding or removal · CPC title

• B23Q11/0071

  dust collectors for hand tools · CPC title

• Y10T408/50

  with product handling or receiving means · CPC title

• B24B55/10

  specially designed for portable grinding machines, e.g. hand-guided · CPC title

• B23Q11/0042 Primary

  Devices for removing chips (B23Q11/02, B23Q11/0875 take precedence) · CPC title