Apparatus for brazing hardened tips to surfaces

• US 3,960,310 A
• Filed: 05/20/1974
• Issued: 06/01/1976
• Est. Priority Date: 05/20/1974
• Status: Expired due to Term

• Current Assignee: Lucian Nussbaum
• Original Assignee: Lucian Nussbaum
• Inventors: Nussbaum, Lucian
• Primary Examiner(s): Hall, Carl E.
• Application Number:
  US05/471,450
• Time in Patent Office: 743 Days
• Field of Search: 29/473.1, 29/493, 29/502, 228/6, 228/8, 228/44, 228/49, 228/212, 228/185, 228/44.1, 76/25 R, 76/101 A, 76/112
• US Class Current: 228/6.1
• CPC Class Codes: B23D 65/00 Making tools for sawing machines or sawing devices for use in cutting any kind of material
• CPC Class Codes: B23K 3/08 Auxiliary devices therefor cleaning pipes or tubes or systems of pipes or tubes, e.g. before soldering, B08B9/02
• CPC Class Codes: B23K 31/025 Connecting cutting edges or the like to tools; Attaching reinforcements to workpieces, e.g. wear-resisting zones to tableware

Abstract

The invention relates to an apparatus and method for brazing hardened tips to surfaces as saw blades and the like, wherein the apparatus and method may be performed automatically and in which the hardened tip is held to the surface to which it is joined while a brazing material is melted therebetween and the tip is moved to a final brazed relationship with respect to the surface.

Claims

1. In an apparatus for brazing a hardened tip to a tooth of a toothed member having meltable brazing material therebetween, the invention comprising means movably mounting said toothed member to present a tooth thereof to a brazing position,

means for feeding and applying a force to the tip to hold the same to the tooth in the brazing position to be brazed thereto,

heating means for applying heat to the toothed member and to the held tip to melt the brazing material therebetween,

means for moving the tip relative to said force applying means and to the tooth and for holding the tip in brazing position on the tooth until the braze is completed,

said means being operable in a selected sequence,

and means on said apparatus connected with each of said means for automatically controlling their sequence of operation.

2. In an apparatus as in claim 1,

and means for stopping the movement of the toothed member to locate the tooth in its brazing position prior to the feeding of the tip to the tooth.

3. In an apparatus for automatically brazing a hardened tip to a respective tooth of a movable member having a plurality of teeth with a meltable brazing material therebetween, the invention comprising

moving means connected with and for moving the toothed member to present a selected tooth thereof to a brazing position,

stop means engaging the toothed member to stop the selected tooth at the brazing position,

means for supporting a plurality of the hardened tips and including means for positively feeding and forcefully holding a tip to a selected tooth at the brazing position,

means for applying heat to melt the brazing material,

means for engaging at least a portion of the forcefully held tip to move the same relative to said holding means and to the selected tooth,

and means connected with certain of said means to automatically control their operations.

4. In an apparatus as in claim 3,

said supporting means including a track in which the tips are guided for movement toward the brazing position,

means moving said track to cause the tips to move there along toward the brazing position,

and said feeding means including pusher means cooperating with said track to positively engage and to move each tip onto a respective tooth stopped in the brazing position.

5. In an apparatus as in claim 4,

escapement means cooperable with said track and with said pusher means to control the feed of the tips along said track toward the brazing position.

6. In an apparatus for brazing a set of a hardened tip and a meltable shim to the tooth of a movable member having a plurality of teeth, the invention comprising

means for moving the toothed member and to locate a selected tooth thereof in a brazing position,

means for positively moving and positioning the set on the selected tooth in an initial brazing position,

a source of gas flame heat,

means for focusing the heat primarily at the tooth in the brazing position in the proximity of the set retained thereon to melt the shim of the set and for removing the heat from the tooth after the shim is melted,

and means for moving at least the tip of the set from said initial position relative to the tooth after the shim is melted to a second position relative to the tooth,

said positioning means applying a force to the tip to retain the same in its initial position and in its second position on the tooth.

7. In an apparatus as in claim 6,

control means connected with said means and source of heat to control the sequential operations thereof automatically.

8. In an apparatus as in claim 7,

said control means including means connected with said moving means to cause the movement thereof after the shim is melted.

9. In an apparatus as in claim 6,

said means for moving the toothed member including a rotatable support for the toothed member, a rotatable motor to rotate said support and toothed member, and brake means between said motor and the toothed member to maintain the position of said toothed member after the selected tooth is located in its brazing position.

10. In an apparatus as in claim 7,

said control means including means connected with said positioning means to cause the same to release the force on the set after at least the tip thereof has been moved to said second position and joined to the selected tooth.

11. In an apparatus as in claim 6,

and means connected with said toothed member moving and locating means, said positioning means, said heat focusing means and said tip moving means for controlling their operations automatically.