Power tool arbor device

Patent metadata

Field	Value
Publication number	US-9486860-B2
Application number	US-201414276278-A
Country	US
Kind code	B2
Filing date	May 13, 2014
Priority date	Oct 23, 2009
Publication date	Nov 8, 2016
Grant date	Nov 8, 2016

Abstract

A power tool arbor assembly includes an arbor, an actuating member located at a second end of the arbor, and a friction member located at the second end of the arbor. The friction member is axially movable along the second end of the arbor. The friction member has a first axial position when no power tool accessory is attached to the second end of the arbor. The friction member is moveable toward a first end of the arbor from the first axial position to a second axial position in response to contact between the power tool accessory and the friction member, and the friction member is moveable toward the first end of the arbor from the second axial position to a third axial position when the actuating member is actuated.

First claim

What is claimed is:

1. A power tool arbor assembly comprising:
an arbor having a body with an axis, a first end adapted to couple with a rotating tool and a second end for attaching a power tool accessory;
an actuating member located at the second end of the arbor; and
a friction member located at the second end of the arbor, the friction member including a first surface for contacting a surface of the power tool accessory and the friction member being axially movable along the second end of the arbor,
wherein the friction member has a first axial position when no power tool accessory is attached to the second end of the arbor,
the friction member being moveable toward the first end of the arbor from the first axial position to a second axial position in response to contact between the surface of the power tool accessory and the first surface of the friction member, and
the friction member being moveable toward the first end of the arbor from the second axial position to a third axial position when the actuating member is actuated.

2. The power tool arbor assembly of claim 1 , wherein the actuating member is axially moveable toward the first end from a first position to a second position in response to contact between the surface of the power tool accessory and the first surface of the friction member.

3. The power tool arbor assembly of claim 2 , wherein the actuating member is biased to the first position.

4. The power tool arbor assembly of claim 3 , wherein the actuating member is rotated about the axis of the body from the second position to a third position to allow the friction member to move from the second axial position to the third axial position.

5. The power tool arbor assembly of claim 1 , further comprising a roller element located between the friction member and the body of the arbor.

6. The power tool arbor assembly of claim 5 , wherein the friction member is in contact with the roller element when the friction member is in the second axial position.

7. The power tool arbor assembly of claim 5 , further comprising a radially acting spring located at the second end of the arbor, wherein the radially acting spring biases the roller element away from the axis of the body.

8. The power tool arbor assembly of claim 5 , further comprising a compression spring located between the friction member and the body of the arbor, wherein the compression spring acts upon the roller element and the actuating member.

9. The power tool arbor assembly of claim 8 , further comprising a spring pin between the compression spring and the roller element.

10. The power tool arbor assembly of claim 1 , wherein the power tool accessory is a hole saw.

11. A power tool arbor assembly comprising:
an arbor having a body with an axis, a first end adapted to couple with a rotating tool, and a second end for attaching a power tool accessory;
an actuating member located at the second end of the arbor; and
a friction member located at the second end of the arbor, the friction member including a first surface for contacting a surface of the power tool accessory and the friction member being axially movable along the second end of the arbor,
wherein the actuating member has a first position when no power tool accessory is attached to the second end,
the actuating member being axially moveable toward the first end from the first position to a second position in response to contact between the surface of the power tool accessory and the first surface, and
the actuating member is movable from the second position to a third position.

12. The power tool arbor assembly of claim 11 , wherein the actuating member is biased to the first position.

13. The power tool arbor assembly of claim 11 , wherein the friction member moves axially toward the first end from a first axial position to a second axial position on the second end in response to contact between the surface of the power tool accessory and the first surface.

14. The power tool arbor assembly of claim 12 , wherein the friction member is allowed to move axially toward the first end from the second axial position to a third axial position on the second end when the actuating member is rotated from the second position to the third position.

15. The power tool arbor assembly of claim 11 , further comprising a roller element located between the actuating member and the second end of the arbor.

16. The power tool arbor assembly of claim 15 , further comprising a radially acting spring located at the second end of the arbor, wherein the radially acting spring biases the roller element radially away from the axis of the body.

17. The power tool arbor assembly of claim 15 , wherein the actuating member includes an inner surface having a tang extending radially inward from the inner surface and the inner surface defining a cavity.

18. The power tool arbor assembly of claim 17 , further comprising a compression spring located within the cavity of the actuating member, wherein the compression spring biases the roller element toward the tang of the actuating member.

19. The power tool arbor assembly of claim 18 , further comprising a spring pin supporting the compression spring within the actuating member.

20. The power tool arbor assembly of claim 11 , wherein the power tool accessory is a hole saw.

Assignees

• Milwaukee Electric Tool Corp

Inventors

• Kazda Austin J
• Steele Michael S
• Allen Douglas W

Classifications

• B23B51/0473 Primary

  Details about the connection between the driven shaft and the tubular cutting part; Arbors · CPC title

• Y10T408/895

  Having axial, core-receiving central portion · CPC title

• B23B2251/428

  Operations & Transport · mapped topic

• B23B2240/00

  Details of connections of tools or workpieces · CPC title

• Y10T408/95

  with tool-retaining means · CPC title