Machine tool comprising a protective cabinet and an illumination system

• US 7,828,454 B2
• Filed: 08/10/2007
• Issued: 11/09/2010
• Est. Priority Date: 02/22/2005
• Status: Active Grant

• Current Assignee: Deckel MAHO Pfronten GmbH (Dmg Mori Co., Ltd.)
• Original Assignee: Deckel MAHO Pfronten GmbH (Dmg Mori Co., Ltd.)
• Inventors: Hagn, Joseph, Seitz, Reinhold
• Primary Examiner(s): Ward; John A
• Application Number:
  US11/837,246
• Publication Number:
  US 20080025015A1
• Time in Patent Office: 1,187 Days
• Field of Search: 362/89, 362/133, 362/154, 362/155
• US Class Current: 362/89
• CPC Class Codes: B23Q 11/0891 arranged between the working area and the operator
• CPC Class Codes: B23Q 17/2404 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 Class Codes: F21W 2131/403 for machines
• CPC Class Codes: F21Y 2105/00 Planar light sources
• CPC Class Codes: Y10T 409/30392 with means to protect operative or machine [e.g., guard, safety device, etc.]

Abstract

A machine tool having a protective cabinet and an illumination system comprising at least one discharge lamp installed in the interior space of the protective cabinet. The discharge lamp is formed as a flat lamp radiating over a large area with a uniform luminous intensity and disposed on a cabinet wall in order to obtain an enhanced illumination of the entire workspace of the machine as well as of the interior space of the protective cabinet.

Claims

1. A machine tool comprising:

a protective cabinet having walls and a ceiling; and

an illumination system comprising at least one discharge lamp installed on a wall in the interior space of said protective cabinet;

said discharge lamp being formed as a flat lamp configured to radiate over a large area, said flat lamp comprising a flat gas-tight housing with a bottom plate, a flat transparent top plate, a discharge space between the bottom plate and top plate filled with a discharge medium, and electrodes producing a dielectrically impeded discharge in the discharge medium and radiation with a uniform luminous intensity over the entire surface of the top plate, said discharge lamp being sealed against the intrusion of gases and liquids and particulates produced during machining processes conducted within the protective cabinet.

2. The machine tool according to claim 1, wherein said flat lamp has a thickness of approximately up to 30 mm and an angled, round, or oval shape.

3. The machine tool according to claim 1, wherein at least one flat lamp is mounted on the inner side of a cabinet wall or on the ceiling of said protective cabinet.

4. The machine tool according to claim 2, wherein at least one flat lamp is mounted on the inner side of a cabinet wall or on the ceiling of said protective cabinet.

5. The machine tool according to claim 1, wherein at least one wall of said protective cabinet is formed with an indentation and at least one flat lamp is installed in said indentation in a cabinet wall or in the cabinet ceiling in a sealed manner.

6. The machine tool according to claim 3, wherein at least one wall of said protective cabinet is formed with an indentation and at least one flat lamp is installed in said indentation in a cabinet wall or in the cabinet ceiling in a sealed manner.

7. The machine tool according to claim 1, wherein said flat lamp is disposed on a cabinet wall in a plane-parallel orientation or in an adjustable oblique posture.

8. The machine tool according to claim 3, wherein said flat lamp is disposed on a cabinet wall in a plane-parallel orientation or in an adjustable oblique posture.

9. The machine tool according to claim 7, wherein said flat lamp is mountable to said protective cabinet via adjustable supports.

10. The machine tool according to claim 8, wherein said flat lamp is mountable to said protective cabinet via adjustable supports.

11. The machine tool according to claim 9, said supports comprise fixable spherical surface bearings.

12. The machine tool according to claim 10, said supports comprise fixable spherical surface bearings.

13. The machine tool according to claim 1, and further comprising elements for enhanced heat dissipation mounted to said housing of said flat lamp.

14. The machine tool according to claim 1, and further comprising a flat chamber in said housing of said flat lamp for accommodating electric/electronic switching element.

15. The machine tool according to claim 13, and further comprising a flat chamber in said housing of said flat lamp for accommodating electric/electronic switching elements.