Drilling device for drilling plates susceptible to breaking

• US 4,730,420 A
• Filed: 01/31/1986
• Issued: 03/15/1988
• Est. Priority Date: 02/06/1985
• Status: Expired due to Fees

• Current Assignee: Benteler AG (Benteler International AG)
• Original Assignee: Benteler-Werke AG
• Inventors: Werner, Uwe, Korswird, Joachim, Stratmann, Herbert
• Primary Examiner(s): Schmidt, Frederick R.
• Assistant Examiner(s): RACHUBA, MAURINA T
• Application Number:
  US06/825,099
• Time in Patent Office: 774 Days
• Field of Search: 51/283 R, 51/111 R, 51/241 S, 125/20, 408/36, 408/37, 408/97, 408/115 R, 408/72 R, 408/145, 408/42, 269/257, 269/258, 269/259, 269/261, 269/263, 269/264, 269/271, 269/279, 269/280, 269/283, 269/281, 269/284, 269/87, 269/87.1, 269/87.3
• US Class Current: 451/41
• CPC Class Codes: B23B 39/22 with working-spindles in opposite headstocks
• CPC Class Codes: B23B 49/02 Boring templates or bushings
• CPC Class Codes: B28D 1/041 with cylinder saws, e.g. trepanning; saw cylinders, e.g. having their cutting rim equipped with abrasive particles
• CPC Class Codes: Y10T 408/378 Coaxial, opposed tools
• CPC Class Codes: Y10T 408/55 with work-engaging structure other than Tool or tool-support

Abstract

A drilling machine for drilling holes in glass panes includes an annular support and an annular pressing member aligned opposite each other along a path of movement of the drill bit. The support and the pressing member are swingably mounted relative to the axis of the drill bit and are made preferably as inner rings of a ball and socket joint.

Claims

1. A device for drilling plates susceptible to breaking, particularly glass panes, comprising an annular support for a plate to be drilled;

an annular pressing member arranged for movement opposite said support to engage and press the plate;

a drill piece supported for movement along an axis passing through openings of said support and said pressing member;

said support and said pressing member having respectively an outer jacket in the form of a spherical segment slidably mounted in a correspondingly shaped socket to adjust themselves to inclined positions of the plate relative to said axis.

2. A device as defined in claim 1, wherein said support and said pressing member are plastic rings.

3. A device as defined in claim 2, wherein the plastic ring of the pressing member is provided at its bottom with a contact ring of an elastic material.

4. A device as defined in claim 1, wherein the support is swingably mounted on a vertically adjustable device.

5. A device as defined in claim 1, wherein the pressing member is swingably mounted on a vertically adjustable

6. A device for drilling plates susceptible to breaking, particularly glass panes, comprising an annular support for a plate to be drilled;

an annular pressing member arranged opposite said support to engage the plate;

a drill piece supported for movement along an axis passing through openings of said support and said pressing member; and

said support and said pressing member being inner rings of ball and socket joints adjustable to inclined positions of the plate relative to said axis.