Scribing apparatus

• US 6,536,121 B1
• Filed: 08/02/2000
• Issued: 03/25/2003
• Est. Priority Date: 08/06/1999
• Status: Active Grant

• Current Assignee: THK Intechs Co., Ltd. (THK Company Limited)
• Original Assignee: Beldex Corp. (THK Company Limited), THK Company Limited
• Inventors: Shimotoyodome, Gyo, Ishikawa, Hirokazu
• Primary Examiner(s): Goodman, Charles
• Application Number:
  US09/631,687
• Time in Patent Office: 965 Days
• Field of Search: 838/80, 838/79, 838/81, 83/74, 83/768, 225/94, 225/96, 33/181, 33/270.1, 33/321, 33D/IG.1, 33D/IG.2
• US Class Current: 33/18.1
• CPC Class Codes: C03B 33/10 Glass-cutting tools, e.g. scoring tools
• CPC Class Codes: Y02P 40/57 Improving the yield, e-g- reduction of reject rates
• CPC Class Codes: Y10T 225/321 Preliminary weakener
• CPC Class Codes: Y10T 83/0348 Active means to control depth of score

Abstract

A scribing apparatus which forms a scribe line on a work 100 comprises a scribe body 10 having a cutter 13 put on the work 100 and a vibration generation member 14 which vibrates the cutter 13 in a direction perpendicular to the work 100 periodically, a support device having a support body 20 for supporting the scribe body 10 to be movable, and magnetic force applying means 40 for holding the scribe body 10 at a standard height in the direction by using magnetic force. The magnetic force applying means 40 includes a pair of magnets 41a, 41b and a pair of magnets 42a, 42b repulsing each other in a direction parallel to a direction in which the vibration generation member 14 vibrates. And magnetically repelling force applied to the scribe body 10 by said first pair of magnets 41a, 41b and magnetically repelling force applied to the scribe body 10 by said second pair of magnets 42a, 42b oppose to each other.

Claims

1. A scribing apparatus which forms a scribe line on a work placed in a horizontal plane, comprising:

a scribe body having a cutter and a vibration generation member which vibrates the cutter periodically;

a support device having a support body for slideably supporting the scribe body to be movable in a vertical direction;

a pair of magnets repulsing each other disposed between the support body and the scribe body to provide a magnetically repelling force,

wherein the pair of magnets apply a floatage to the scribe body by using said magnetically repelling force; and

another pair of magnets repulsing each other disposed between the support body and the scribe body to provide a magnetically repelling force opposing to said magnetically repelling force of said pair of magnets.

2. A scribing apparatus according to claim 1, further comprising:

a magnetic force adjustment mechanism which adjusts magnetically repelling force by changing a position of at least one magnet of either of the pairs of magnets.

3. A scribing apparatus according to claim 1, wherein at least one magnet of either of the pairs of magnets is composed of an electromagnet, and magnetically repelling force is adjusted by changing an impressed electric current of said electromagnet.

4. A scribing apparatus which forms a scribe line on a work placed in a horizontal plane, comprising:

a scribe body having a cutter and a vibration generation member which vibrates the cutter periodically;

a support device having a support body for slideably supporting the scribe body to be movable in a vertical direction;

a pair of magnets repulsing each other, one of said pair of magnets being disposed on the scribe body and another one of said pair of magnets being disposed on the support body,

wherein the pair of magnets apply a floatage to the scribe body by using magnetically repelling force, and

another pair of magnets repulsing each other, one of said another pair of magnets being disposed on the scribe body and another one of said another pair of magnets being disposed on the support body,

wherein magnetically repelling force applied to the scribe body by said another pair of magnets and magnetically repelling force applied to the scribe body by said pair of magnets opposing to each other are in a direction parallel to a direction in which the vibration generation member vibrates.

5. A scribing apparatus which forms a scribe line on a work placed in a horizontal plane, comprising

a scribe body having a cutter and a vibration generation member which vibrates the cutter periodically;

a support device having a support body for slideably supporting the scribe body to be movable in a vertical direction; and

a pair of magnets repulsing each other disposed between the support body and the scribe body adjusting a static load applied to the work from the cutter,

wherein the pair of magnets apply a floatage to the scribe body by using magnetically repelling force, and

another pair of magnets repulsing each other, disposed between the support body and the scribe body,

wherein magnetically repelling force applied to the scribe body by said another pair of magnets and magnetically repelling force applied to the scribe body by said pair of magnets opposing to each other are in a direction parallel to a direction in which the vibration generation member vibrates.