Tool for repairing damaged threads

A symmetrical design is not necessary, but such a design allows the tool 8 to maintain sufficient strength when being used for tapping a threaded object. Likewise, the cavities 40 a - 40 d are arranged radially on the body 10 inside of the through bores.

While the cavities could be located in the same radial location as the through bores, or even in a radial location outside of the through bores, the shown relationship allows the tool 8 to retain a desired amount of strength while retaining a high level of utility. As previously shown in FIGS. The axis of rotation is centered on the cavity being used, in this instance 40 a. The foregoing is considered as illustrative only of the principles of the invention.

Furthermore, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the invention to the exact construction and operation shown and described. All rights reserved.

Login Sign up. Search Expert Search Quick Search. Tool for repairing damaged threads. United States Patent A tool for rethreading a damaged threaded object having a solid body with at least one through bore including at least one cutting tooth. A slot intersects the through bore, allowing relief for shavings removed from the object as it is rethreaded. The tool can be adapted to receive a pivot arm to increase the force exerted on the object.

Multiple through bores and cutting teeth of varying sizes can be formed in a single tool. The tool may also be adapted to be used in conjunction with taps of varying sizes. Click for automatic bibliography generation. Download PDF Incomplete copy of French patent 18,, published Jul. Incomplete copy of UK patent 12,, published Sep. The method according to claim 1, further providing said pivot arm in the form of a socket wrench. The method according to claim 1, further providing said pivot arm in the form of an allen wrench.

A thread repair tool comprising: a disc having a thickness defined by oppositely disposed substantially planar surfaces, a through bore located in said disc containing at least one thread cutting tooth, said through bore being coaxial with an axis of rotation of said tool, a slotted area, said slotted area extending inwardly from the periphery of the disc and intersecting said through bore, a pivotal cavity located on at least one of said surfaces of said disc and being coaxial with an axis of rotation of said tool, said cavity being arranged to removably grip a tap, said disc further defining a lever arm extending laterally from and pivotally relative to said axes of rotation, and a polygonal opening laterally spaced from said pivotal cavity and said through bore, said opening arranged to receive a removable lever arm extension member having a like polygonal configuration as said opening.

A tool according to claim 5 wherein said disc contains a plurality of laterally spaced pivotal cavities, each of said cavities being coaxial with a preselected axes of rotation, said plurality of cavities being of varying sizes, said cavities being circumferentially spaced relative to one another, a plurality of laterally spaced through bores of varying sizes, said plurality of through bores being circumferentially spaced relative to one another, a plurality of slotted areas, said slotted areas extending inwardly from the periphery of the disc and one of said slotted areas intersecting one of said through bores, said disc further defining a plurality of lever arms corresponding to each of said cavities and each of said through bores, said plurality of lever arms extending laterally from and pivotally relative to each of said axes of rotation.

A tool according to claim 6 wherein said polygonal opening is centrally located on said disk, said plurality of through bores is radially arranged with respect to said polygonal opening, and said plurality of cavities is arranged radially with respect to the polygonal opening and between said plurality of through bores and said polygonal opening.

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Method for using a die holder with centering and squaring guide to cut threads on a cylindrical workpiece. Segmented die.

Thread chasing tool. Rethreading die and method. Multiple tool holder with retainer and drive socket. In this article we will explain how to fix the damaged thread. Before you can start repairing the damaged thread, you will need the following tools:. Make sure in advance that the single-cut tap and thread insert match and have the right size and same pitch. In our example, the thread is free, so there is no broken screw. We describe how to remove such a broken screw in our article "How to remove a broken screw from a workpiece?

How you even cut an internal thread is explained in our article "How to cut an internal thread in three steps". First you drill the damaged thread with a twist drill. The twist drill must match the size of the thread diameter. You can find an overview of the required diameter core holes in this table PDF. In the case of a new metric thread with e. Restoring damaged hand tools m6-m10 thread repair kit for wire thread insert Ready to Ship. CN Sunbright Tools Co.

Go to Page Go. About products and suppliers: Alibaba. There are damaged thread repair tool suppliers, mainly located in Asia. Related Searches: china car repair tools for benz china bmw pixel repair tools china belt repair tools china car repaire tools china cell phone repair tool china threading tool tools damage repair damaged wheel repair machine car damaged garage car frame damage repair damaged glow plug removal tool set repairing frame damage chassis damage repair auto damaged repair machine china damaged cars china china hair damage repair china damaged threads china acne damaged skin china damaged screen china damage cream 11n60c3 mosfet pearl for children.