Grinder adaptor assembly

Patent metadata

Field	Value
Publication number	US-9969053-B2
Application number	US-201514711043-A
Country	US
Kind code	B2
Filing date	May 13, 2015
Priority date	May 13, 2015
Publication date	May 15, 2018
Grant date	May 15, 2018

Abstract

A grinder assembly includes a spindle selectively rotatable about a central axis. The grinder assembly also includes a grinding wheel attachable to and detachable from the spindle. The grinding wheel is rotatable about the central axis when attached to the spindle. The grinder assembly further includes an adaptor cooperating with the spindle and the grinding wheel to provide a quick attachment and detachment of the grinding wheel with the spindle. The adaptor includes a plurality of first teeth extending outwardly relative to the spindle and a plurality of second teeth extending outwardly relative to the grinding wheel. The first and second teeth cooperate with each other to selectively attach the grinding wheel to the spindle and prevent independent rotation of the grinding wheel relative to the spindle.

First claim

The invention claimed is:

1. A grinder assembly comprising:
a spindle selectively rotatable about a central axis;
a grinding wheel attachable to and detachable from the spindle, with the grinding wheel rotatable about the central axis when attached to the spindle; and
an adaptor cooperating with the spindle and the grinding wheel to provide a quick attachment and detachment of the grinding wheel with the spindle, and wherein the adaptor includes a plurality of first teeth extending outwardly relative to the spindle and a plurality of second teeth extending outwardly relative to the grinding wheel, with the first and second teeth cooperating with each other to selectively attach the grinding wheel to the spindle and prevent independent rotation of the grinding wheel relative to the spindle;
wherein:
the adaptor includes a first portion cooperating with the spindle and a second portion cooperating with the grinding wheel;
the first portion includes a first face and the second portion includes a second face;
the first portion defines a recess and includes a component disposed in the recess, with the component movable axially relative to the central axis such that the first face of the first portion engages the second face of the second portion when the grinding wheel is attached to the spindle;
the first portion cooperates with a distal end of the spindle;
the first portion includes the first teeth extending outwardly therefrom;
the second portion includes the second teeth extending outwardly therefrom, with contact between respective first and second teeth limiting radial movement of the grinding wheel relative to the central axis when the grinding wheel is attached to the spindle;
at least a portion of the first and second faces engage each other to limit axial movement of the grinding wheel relative to the spindle when the grinding wheel is attached to the spindle;
the component includes a first side and a second side spaced from each other, with the first side disposed proximal to the first face and the first teeth extend outwardly from the first side of the component and the first portion includes a biasing member disposed between the second side and a bottom surface of the recess such that the biasing member continuously biases the component outwardly away from the bottom surface;
the biasing member is further defined as a plurality of biasing members disposed between the second side and the bottom surface of the recess;
the first portion includes a plurality of pins fixed to the component in a spaced relationship, with at least one of the biasing members surrounding part of each of the pins.

2. The assembly as set forth in claim 1 wherein the adaptor includes a locating feature that positions the grinding wheel relative to the spindle in the same location each time the grinding wheel is attached to the spindle.

3. The assembly as set forth in claim 2 wherein the locating feature includes a projection extending outwardly relative to one of the first portion and the second portion, and wherein the locating feature includes an opening defined by the other one of the first portion and the second portion, with the projection extending into the opening when the grinding wheel is attached to the spindle.

4. The assembly as set forth in claim 1 wherein:
the first face includes a first platform and a second platform each being substantially flat, with the first and second platforms separated by the component;
the second face includes a third platform and a fourth platform each being substantially flat, with the third and fourth platforms separated by the second teeth; and
the first and third platforms engage each other when the component biases back toward the bottom surface when the grinding wheel is attached to the spindle, and the second and fourth platforms engage each other when the component biases back toward the bottom surface when the grinding wheel is attached to the spindle.

5. The assembly as set forth in claim 1 wherein the first portion of the adaptor is integrated into the distal end of the spindle such that the first portion and the spindle are one piece and the second portion of the adaptor is integrated into the grinding wheel such that the second portion and the grinding wheel are one piece.

6. The assembly as set forth in claim 5 wherein the first portion defines a plurality of first holes spaced from each other and the second portion defines a plurality of second holes spaced from each other and the second holes align with respective first holes, and further including a plurality of first fasteners, with one of the first fasteners disposed through each of the first and second holes that align with each other such that the first fasteners attach the grinding wheel to the spindle.

7. The assembly as set forth in claim 1 wherein the first portion of the adaptor is a separate piece attached to the distal end of the spindle and the second portion of the adaptor is a separate piece attached to the grinding wheel.

8. The assembly as set forth in claim 7 wherein:
the first portion defines a plurality of first holes spaced from each other and the second portion defines a plurality of second holes spaced from each other and the second holes align with respective first holes, and further including a plurality of first fasteners, with one of the first fasteners disposed through each of the first and second holes that align with each other such that the first fasteners attach the grinding wheel to the spindle;
the first portion defines a plurality of third holes spaced from each other and spaced from the first holes, and the distal end of the spindle defines a plurality of fourth holes spaced from each other, with respective third and fourth holes aligning with each other, and further including a plurality of second fasteners, with one of the second fasteners disposed through each of the third and fourth holes that align with each other such that the second fasteners attach the first portion of the adaptor to the spindle; and
the second portion defines a plurality of fifth holes spaced from each other and spaced from the second holes, and the grinding wheel defines a plurality of sixth holes spaced from each other, and further including a plurality of third fasteners, with one of the third fasteners disposed through each of the fifth and sixth holes that align with each other such that the third fasteners attach the second portion of the adaptor to the grinding wheel.

9. A grinder assembly comprising:
a CNC machine;
a spindle supported by the CNC machine, with the spindle selectively rotatable about a central axis, with rotation of the spindle controlled by the CNC machine;
a grinding wheel attachable to and detachable from the spindle, with the grinding wheel rotatable about the central axis when attached to the spindle; and
an adaptor cooperating with the spindle and the grinding wheel to provide a quick attachment and detachment of the grinding wheel with the spindle, and wherein the adaptor includes a plurality of first teeth extending outwardly relative to the spindle and a plurality of second teeth extending outwardly relative to the grinding wheel, with the first and second teeth cooperating with each other to selectively attach the grinding wheel to the spindle and prevent independent rotation of the grinding wheel relative to the spindle;
wherein:
the adaptor includes a first portion cooperating with the spindle and a second portion cooperating with the grinding wheel;
the first portion of the adaptor defines a recess and includes a component disposed in the recess, with the component movable axially relative to the central axis in the recess;
the first portion includes the first teeth extending

Assignees

• Gm Global Tech Operations Llc

Inventors

• Lee Jae Min
• Agapiou John S
• Bucan James A

Classifications

• B24B5/42 Primary

  for grinding crankshafts or crankpins · CPC title

• B27B5/30

  for mounting or securing saw blades or saw spindles · CPC title

• B24B45/006 Primary

  Quick mount and release means for disc-like wheels, e.g. on power tools · CPC title

• B24B5/423 Primary

  having a grinding wheel turning around the workpiece · CPC title

• B24B45/00

  Means for securing grinding wheels on rotary arbors (suppression of vibrations in systems F16F15/00; testing static or dynamic balancing of machines G01M1/00) · CPC title