Drilling machine

Patent metadata

Field	Value
Publication number	US-2022016720-A1
Application number	US-202117380539-A
Country	US
Kind code	A1
Filing date	Jul 20, 2021
Priority date	Jul 20, 2020
Publication date	Jan 20, 2022
Grant date	—

Abstract

A drilling machine, in particular a magnetic core drilling machine. The drilling machine having a magnetic base to detachably secure the drilling machine to a surface. A drive motor is arranged in a housing and has a rotor shaft with a rotor shaft longitudinal axis that is connected in a power-transmitting manner via a gear mechanism to a tool spindle with a spindle longitudinal axis. A tool holder is connected to the tool spindle to receive a drilling tool. The spindle longitudinal axis is aligned substantially parallel to the longitudinal axis of the rotor shaft, and the tool spindle is axially adjusted along the longitudinal axis of the spindle relative to the drive motor and the magnetic base.

First claim

What is claimed is:

1 . A drilling machine, in particular a magnetic core drilling machine, the drilling machine comprising:
a magnetic base to detachably secure the drilling machine to a surface; a drive motor arranged in a housing and having a rotor shaft with a rotor shaft longitudinal axis that is connected in a power-transmitting manner via a gear mechanism to a tool spindle with a spindle longitudinal axis; and a tool holder connected to the tool spindle to receive a drilling tool, wherein the spindle longitudinal axis is aligned substantially parallel to the longitudinal axis of the rotor shaft, and wherein the tool spindle is axially adjusted along the longitudinal axis of the spindle relative to the drive motor and the magnetic base.

2 . The drilling machine according to claim 1 , wherein the drive motor is designed as an electrically commutated drive motor.

3 . The drilling machine according to claim 1 , wherein the rotor shaft longitudinal axis is oriented radially offset to the spindle longitudinal axis.

4 . The drilling machine according to claim 1 , wherein the gear mechanism includes a first gear stage, a second gear stage and a third gear stage.

5 . The drilling machine according to claim 4 , wherein the first, second and third gear stages are arranged in a row arrangement.

6 . The drilling machine according to claim 4 , wherein gear shaft of the first, second, and third gear stages lie in a plane with the rotor shaft longitudinal axis and the spindle longitudinal axis.

7 . The drilling machine according to claim 4 , wherein meshing engagements of the gear stages are axially staggered.

8 . The drilling machine according to claim 4 , wherein a meshing engagement of the first gear stage is closer to the magnetic base than a meshing engagement of the second gear stage and a meshing engagement of the third gear stage, and wherein the meshing engagement of the second gear stage is closer to the magnetic base than the meshing engagement of the third gear stage.

9 . The drilling machine according to claim 1 , wherein, in the first gear stage, which is directly connected to the rotor shaft, a drive pinion, which is connected to the rotor shaft in a rotationally fixed manner, is connected to the output gear via an intermediate gear or via a drive belt.

10 . The drilling machine according to claim 4 , wherein the gear shaft carrying the output gear of the first gear stage and the drive pinion of the second gear stage is assigned a safety coupling.

11 . The drilling machine according to claim 1 , wherein a quill guide is provided for axial adjustment of the tool spindle along the spindle longitudinal axis.

12 . The drilling machine according to claim 4 , wherein a feed drive for the quill guide is assigned to the gear shaft carrying the output gear of the first gear stage and the drive pinion of the second gear stage.

13 . The drilling machine according to claim 1 , wherein an adjuster is provided for axial adjustment of the tool spindle.

14 . The drilling machine according to claim 1 , wherein a height of the drilling machine is 200 mm or less, or 180 mm or less, or 170 mm or less or 169 mm.

15 . The drilling machine according to claim 1 , wherein a length of the drilling machine is 400 mm or less, or 350 mm or less, or 280 mm or less, or 265 mm.

16 . The drilling machine according to claim 1 , wherein a distance of the rotor shaft longitudinal axis to the spindle longitudinal axis is 70 mm or more, 90 mm or more, 110 mm or more, 190 mm or less, 170 mm or less, 150 mm or less, or 115 mm.

17 . The drilling machine according to claim 1 , wherein a handle is provided, the handle being mountable on the housing.

18 . The drilling machine according to claim 17 , wherein the handle is mounted on the housing to be axially adjustable.

19 . The drilling machine according to claim 1 , wherein an accumulator is provided for supplying power to the drive motor.

20 . The drilling machine according to claim 1 , wherein drive electronics are provided, which are accommodated in the housing.

Assignees

• Fein C & E Gmbh

Inventors

• Seebauer Ralf

Classifications

• B25H1/0071

  by magnetic means · CPC title

• B23B45/008 Primary

  Gear boxes, clutches, bearings, feeding mechanisms or like equipment · CPC title

• B23B2260/062

  Electric motors · CPC title

• B23B47/26 Primary

  Liftable or lowerable drill heads or headstocks; Balancing arrangements therefor {(weight and flexion compensation B23Q11/001)} · CPC title

• B23B2260/10

  Magnets · CPC title