Tool bit monitoring system for machine tools

• US 6,059,494 A
• Filed: 09/09/1996
• Issued: 05/09/2000
• Est. Priority Date: 09/09/1996
• Status: Expired due to Fees

• Current Assignee: Thermwood Corporation
• Original Assignee: Thermwood Corporation
• Inventors: Susnjara, Kenneth J.
• Primary Examiner(s): Howell, Daniel W.
• Application Number:
  US08/707,863
• Time in Patent Office: 1,338 Days
• Field of Search: 408/16, 408/11, 408/67, 409/134, 409/137
• US Class Current: 409/134
• CPC Class Codes: B23Q 11/006 by sucking and blowing simultaneously
• 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: G05B 2219/35289 Display machining state and corresponding control program
• CPC Class Codes: G05B 2219/40607 Fixed camera to observe workspace, object, workpiece, global
• CPC Class Codes: G05B 2219/45044 Cutting
• CPC Class Codes: Y10T 408/172 Responsive to Tool
• CPC Class Codes: Y10T 408/21 with signal, indicator, illuminator or optical means
• CPC Class Codes: Y10T 408/50 with product handling or receiving means
• CPC Class Codes: Y10T 409/30392 with means to protect operative or machine [e.g., guard, safety device, etc.]
• CPC Class Codes: Y10T 409/304088 with means to remove chip

Abstract

In a machine tool having a workpiece support table and a tool head assembly provided with a tool engageable in a cutting relation with a workpiece positioned on the table for removing particulate material from the workpiece, a system for monitoring the cutting operation of the tool includes a support assembly, a camera for producing video signals representative of the cutting operation of the tool, the camera being mounted on the support assembly such that its focus is on said tool and a cut made thereby, and a machine controller coupled to the machine tool for controlling its operation. The machine controller includes a video monitor connected to the camera for receiving and displaying the video signals representative of the cutting operation of the tool while simultaneously displaying program information.

Claims

1. In a machine tool having a workpiece support table and a tool head assembly provided with a tool engageable in a cutting relation with a workpiece positioned on said table for removing particulate material from said workpiece, a system for monitoring the cutting operation of the tool, comprising:

a support assembly;

a camera for producing video signals representative of the cutting operation of the tool, said camera being mounted on said support assembly such that its focus is on said tool and a cut made thereby;

a machine controller coupled to said machine tool for controlling its operation;

said machine controller including a video monitor connected to said camera for receiving and displaying said video signals representative of said cutting operation of said tool;

said machine controller further including a video interface connected to said video monitor for enabling display of said video signals representative of said cutting operation of said tool in a first portion of a display screen of said video monitor and simultaneous display of program information in a second portion of said display screen.

2. A system as in claim 1 wherein said support assembly is displaceable relative to said workpiece support table such that said camera is maintained in line of sight with said tool.

3. A system as in claim 1 wherein said support assembly supports said tool.

4. A system as in claim 1 further including an air supply and an air hose connected to said air supply and mounted proximate to said camera for directing air past a lens of said camera to direct air-borne contaminates away from said lens.

5. A system as in claim 1 further including a hood member mountable on said tool head assembly about said tool, said hood including an opening therethrough and wherein said camera is mounted on said support assembly such that said camera is in line of sight with said tool through said opening.

6. A system as in claim 1 further including an enclosure for surrounding said machine tool, said enclosure including an opening therethrough and wherein said camera is mounted on said support assembly such that said camera is in line of sight with said tool through said opening.

7. A system as in claim 1, wherein said machine controller includes a multi-tasking operating system to permit an operator to observe said cutting operation on said video monitor while the machine controller concurrently performing machine operations.