Magnetic drill press

Patent metadata

Field	Value
Publication number	US-10583539-B2
Application number	US-201916279147-A
Country	US
Kind code	B2
Filing date	Feb 19, 2019
Priority date	Apr 25, 2012
Publication date	Mar 10, 2020
Grant date	Mar 10, 2020

Abstract

A magnetic drill press includes a housing, a magnetic base coupled to the housing for engagement with a workpiece, and a motor carriage slidably coupled to the base housing. The magnetic drill press further includes an electric motor supported by the motor carriage and configured to rotate a bit about a bit axis, and a spindle assembly supported by the housing and coupled to the motor carriage for selectively positioning the motor carriage relative to the housing. The magnetic drill press further includes a handle hub coupled to the spindle assembly, and a ratchet assembly including a ratchet head coupled to the handle hub and a ratchet handle coupled to the ratchet head for actuating the spindle assembly by reciprocating motion of the ratchet handle.

First claim

What is claimed is:

1. A magnetic drill press comprising:
a housing;
a magnetic base coupled to the housing for engagement with a workpiece;
a motor carriage slidably coupled to the housing;
an electric motor supported by the motor carriage and configured to rotate a bit about a bit axis;
a spindle assembly supported by the housing and coupled to the motor carriage for selectively positioning the motor carriage relative to the housing; wherein the spindle assembly includes
a collar having an inside surface;
an outer spindle to which the handle hub is drivingly engaged;
an inner spindle drivingly coupled to the motor carriage;
a spindle hub body acting as an interface between the outer spindle and the inner spindle; and
a dog member engaging the inside surface of the collar to substantially inhibit rotation of the spindle hub body in the absence of applied torque to the outer spindle, the dog member permitting rotation of the spindle hub body in response to rotation of the handle hub and the outer spindle to thereby move the motor carriage relative to the housing;

a handle hub coupled to the spindle assembly; and
a ratchet assembly including a ratchet head coupled to the handle hub and a ratchet handle coupled to the ratchet head for actuating the spindle assembly by reciprocating motion of the ratchet handle.

2. The magnetic drill press of claim 1 , further comprising a handle member fixedly coupled to the handle hub for actuating the spindle assembly by continuous motion of the handle member.

3. The magnetic drill press of claim 1 , wherein the dog member is co-rotatable with the spindle hub body and the outer spindle in response to a torque input through the handle hub and the outer spindle.

4. The magnetic drill press of claim 3 , wherein the dog member includes a groove configured to receive a corresponding dog lug formed on the outer spindle.

5. The magnetic drill press of claim 4 , wherein the groove includes a side wall configured to engage the dog lug formed on the outer spindle.

6. The magnetic drill press of claim 3 , wherein the spindle hub body includes a dog actuator portion defining a plurality of radial lobes and radial recesses against which the dog member is engageable.

7. The magnetic drill press of claim 6 , wherein the inside surface of the collar defines a plurality of teeth, and wherein the dog member is displaced in a radially outward direction to engage the teeth in response to rotation of the dog actuator portion relative to the dog member caused by a torque input through the inner spindle and the spindle hub body.

8. The magnetic drill press of claim 7 , wherein subsequent to the dog member engaging the teeth on the collar, further rotation of the dog actuator portion, the spindle hub body, and the inner spindle is inhibited, thereby preventing further movement of the motor carriage relative to the housing.

9. The magnetic drill press of claim 1 , further comprising an illumination system having a first light and a second light, each of which is spaced laterally from the bit axis.

10. The magnetic drill of claim 9 , wherein the illumination system is electrically coupled and selectively controlled by a switch coupled to the housing.

11. A magnetic drill press comprising:
a housing;
a magnetic base coupled to the housing for engagement with a workpiece;
a motor carriage slidably coupled to the housing;
an electric motor supported by the motor carriage and configured to rotate a bit about a bit axis;
a spindle assembly supported by the housing and coupled to the motor carriage for selectively positioning the motor carriage relative to the housing, the spindle assembly including
a collar fixed to the housing and having an inside surface;
a first spindle that receives a torque input from a user of the drill press in a first rotational direction, causing the first spindle to rotate;
a second spindle drivingly coupled to the motor carriage;
a spindle hub body acting as an interface between the first spindle and the second spindle; and
a dog member positioned between the inside surface of the collar and the spindle hub body,

wherein the dog member is disengaged from the inside surface of the collar in response to torque input on the first spindle in the first rotational direction to permit movement of the motor carriage relative to the base housing, and wherein the dog member is engaged with the inside surface of the collar in response to a torque input on the second spindle in an opposite, second rotational direction to inhibit movement of the motor carriage relative to the housing.

12. The magnetic drill press of claim 11 , wherein the inside surface of the collar includes a plurality of teeth with which the dog member is engageable.

13. The magnetic drill press of claim 11 , further comprising:
a handle hub coupled to the spindle assembly; and
a ratchet assembly including a ratchet head coupled to the handle hub and a ratchet handle coupled to the ratchet head for actuating the spindle assembly by reciprocating motion of the ratchet handle.

14. The magnetic drill press of claim 11 , wherein the dog member is co-rotatable with the spindle hub body in response to a torque input on the first spindle in the first rotational direction.

15. The magnetic drill press of claim 14 , wherein the dog member includes a groove configured to receive a corresponding dog lug formed on the first spindle.

16. The magnetic drill press of claim 15 , wherein the groove includes a side wall configured engaged the dog lug formed on the first spindle.

17. The magnetic drill press of claim 14 , wherein the spindle hub body includes a dog actuator portion defining a plurality of radial lobes and radial recesses against which the dog member is engageable.

18. The magnetic drill press of claim 17 , wherein the inside surface of the collar defines a plurality of teeth, and wherein the dog member is displaced in a radially outward direction to engage the teeth in response to rotation of the dog actuator portion relative to the dog member caused by a torque input on the second spindle in the second rotational direction.

19. The magnetic drill press of claim 18 , wherein subsequent to the dog member engaging the teeth on the collar, further rotation of the dog actuator portion, the spindle hub body, and the second spindle is inhibited, thereby preventing further movement of the motor carriage relative to the housing.

Assignees

• Milwaukee Electric Tool Corp

Inventors

• Timmons Terry L
• Plowman Andrew M
• Mueckl Gareth
• Wekwert James

Classifications

• B25H1/0092

  by optical means · CPC title

• Y10T408/6779

  Rack and pinion · CPC title

• B23Q5/32

  Feeding working-spindles (feeding working-spindle supports B23Q5/34) · CPC title

• B23Q17/2404 Primary

  Arrangements for improving direct observation of the working space, e.g. using mirrors or lamps (structural combinations of lighting devices with other articles, not otherwise provided for, F21V33/00) · CPC title

• B25H1/0071

  by magnetic means · CPC title