Machine for boring a plate workpiece

• US 4,573,835 A
• Filed: 09/10/1981
• Issued: 03/04/1986
• Est. Priority Date: 09/11/1980
• Status: Expired due to Fees

• Current Assignee: Flachglas AG
• Original Assignee: Flachglas AG
• Inventors: Eckardt, Rudolf, Frielingsdorf, Horst
• Primary Examiner(s): Weidenfeld, Gil
• Assistant Examiner(s): Howell, Daniel W.
• Application Number:
  US06/300,968
• Time in Patent Office: 1,636 Days
• Field of Search: 408/37, 408/39, 408/41, 408/51, 408/53, 51/80 R, 51/111 R
• US Class Current: 408/37
• CPC Class Codes: B23B 2226/45 Glass turning glass B28D1/16, drilling glass B28D1/14
• CPC Class Codes: B23B 39/003 Drilling machine situated underneath the workpiece
• CPC Class Codes: B23B 39/16 Drilling machines with a plurality of working-spindles; Drilling automatons
• 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 408/3839 with presser-foot
• CPC Class Codes: Y10T 408/385 Rotatable about parallel axes

Abstract

A machine for boring a hole in a plate workpiece comprises a support, a lower clamp arm carried on this support and having an upper clamp surface adapted to support the workpiece, an upper clamp arm carried on the support and having a vertically displaceable lower clamp surface adapted to press the workpiece down against the upper clamp surface, a lower drill arm pivotal about a horizontal axis on the support and having an outer end provided with an upwardly directed boring tool, and an upper drill arm pivotal about a horizontal axis on the support and having an outer end provided with a downwardly directed boring tool. Respective motors in the support for the machine pivot the arms and rotate the tools.

Claims

1. A machine for boring a hole in a glass plate, said machine comprising:

a support;

a lower clamp arm carried on said support and having an upper clamp surface adapted to support the glass plate;

an upper clamp arm carried on said support and having a vertically displaceable lower clamp surface adapted to press the glass plate down against said upper clamp surface;

a lower drill arm pivotal about a horizontal axis on said support and having an outer end provided with an upwardly directed boring tool centered on a tool axis;

an upper drill arm pivotal about said horizontal axis on said support and having an outer end provided with a downwardly directed boring tool centered on a tool axis, the tool axes lying in a common vertical plane generally perpendicular to the horizontal axis;

drive means for rotating the tools about the respective tool axes; and

motor means for moving at least one of said clamp arms toward the other clamp arm to secure the glass plate between the clamp surfaces and for pivoting both of said drill arms similarly toward each other about the horizontal axis from a position with the tool axes crossing each other toward a position with the tool axes coaxial and the tools in vertical engagement through the glass plate held by the clamp arms, whereby such movement of said tool arms bores a hole vertically through the glass plate.

2. The machine defined in claim 1 wherein said upper clamp arm is pivotal about a horizontal axis.

3. The machine defined in claim 1 wherein said upper clamp arm is pivotal about said axis of said drill means.

4. The machine defined in claim 1 wherein said motor means are carried in said support.