CN204504418U - Intensive welding screw or bolt external screw thread reparation improved tool - Google Patents

Abstract

An improved tool for repairing the external threads of dense welding studs or bolts, including a die (2), the die is fixed at one end of a joint (3), and the other end of the joint is set to work with a hand electric drill or an air wrench The round handle structure (31) of end connection. The utility model can be installed on the working end of a hand electric drill or a pneumatic wrench, and the rotation of the hand electric drill or pneumatic wrench drives the die to rotate, so as to realize the re-threading or repair of the external thread of the intensive welding stud or bolt, so that the repair The efficiency of the external thread is greatly improved.

Description

Modified tools for repairing external threads of densely welded studs or bolts

technical field

The utility model relates to the thread repairing field of studs or bolts, which is mainly used for re-threading or repairing the external threads of intensively welded studs or bolts of electric locomotives, and can also be popularized and applied to other related fields of machinery manufacturing industries.

Background technique

The handrail bars and soft air ducts of Harmony locomotives are all welded studs on the car body, and the handrail bars and soft air ducts are installed on the car body through corresponding matching nuts. Because the welding spatter of the corresponding welding studs during the welding process or the adhesion of paint and putty during the coating process after welding, it is difficult to install the nuts or fail to meet the fastening requirements, which affects the product quality; Corresponding welding studs need to be re-threaded before installation.

Chinese patent ZL201220089511.1 discloses a tool for repairing the external thread of dense welded studs or bolts, which includes a die seat cover, one end of the die seat cover is fixed with a die, and the other end of the die seat cover is equipped with a hinge , the distance between the hinged hand and the working end of the die is greater than the effective thread length of the welded stud or bolt to be repaired. This tool can effectively realize the re-threading of intensive welding studs or bolts or repair the damaged threads, but this tool can only repair or repair the external threads of welding studs or bolts by hand. Re-threading, low work efficiency.

Utility model content

In order to overcome the deficiency that the existing thread repair tools can only rewire the external thread of the welding stud or bolt before assembly or repair the damaged thread by pure manual methods, the utility model aims to provide a dense welding stud Or an improved tool for external thread repair of bolts. The tool for external thread repair can be clamped on the widely used hand-held electric drills, pneumatic wrenches, and electric hand drills widely used by the company at present, and the matching dies can be used to complete various welding studs or external bolts. Thread repair or rethreading.

In order to achieve the above object, the technical solution adopted by the utility model is: an improved tool for repairing the external thread of a dense welding stud or bolt, including a die, the die is fixed at one end of a joint, and the other end of the joint is Provides a round handle structure that connects to the working end of a hand drill or pneumatic wrench.

As a fixing method, the die is fixed to the connecting head by a set screw.

The die of the utility model is preferably a round die, and the die can be of different specifications, so as to adapt to re-threading or repairing of external threads of different specifications.

Compared with the prior art, the beneficial effect of the utility model is that the utility model can be installed on the working end of a hand electric drill or a pneumatic wrench, and the die of the utility model can be replaced with a die of different specifications, and the utility model can be installed on the working end of a hand electric drill or a pneumatic wrench. The rotation of the wrench drives the dies of different specifications to rotate, so as to realize the re-threading or repair of the external threads of various intensive welding studs or bolts, so that the efficiency of re-threading or repairing the external threads is greatly improved. In addition, the utility model has the advantages of simple structure, low manufacturing cost and easy operation, and the existing circular dies can be effectively used without additional purchase.

Below in conjunction with accompanying drawing and embodiment the utility model is described further.

Description of drawings

Fig. 1 is the structural representation of an embodiment of the utility model;

Fig. 2 is the left view of Fig. 1;

In the figure 1-set screw; 2-die; 3-connection head.

detailed description

As shown in Figure 1 and Figure 2, an improved tool for repairing the external thread of a dense welding stud or bolt of the utility model includes a cylindrical connector 3, and one end of the connector 3 is set to work with a hand electric drill or a pneumatic wrench. The other end of the connecting head 3 is fixedly connected to the circular die 2 through the set screw 1 . The circular die 2 can be of different specifications, so as to adapt to re-threading or repairing of external threads of different specifications.

The above-mentioned embodiments are only used to illustrate the utility model more clearly, and are not intended to limit the scope of the utility model. After reading the utility model, those skilled in the art all fall within the scope of the various equivalent forms of the utility model. The scope of the application is defined by the claims appended hereto.

Claims (4)

1. An improved tool for repairing the external thread of a densely welded stud or bolt, comprising a die (2), characterized in that the die is fixed to one end of a connector (3), and the other end of the connector is set with a hand A round handle structure (31) connected to the working end of an electric drill or an air wrench. 2 . The improved tool for repairing intensive welding studs or external threads of bolts according to claim 1 , wherein the die is fixed to the connecting head by a set screw. 3 . 3. The improved tool for repairing intensive welded studs or external threads of bolts according to claim 1, wherein the die is a round die. 4. The improved tool for repairing intensive welded studs or external threads of bolts according to claim 1, characterized in that the dies are dies of different specifications.