Air mill with extension rod

Abstract

The utility model discloses an air mill with an extension rod. The air mill comprises an air mill body, the extension rod connected with the air outlet end of the air mill body, and a ball file assembly arranged at the end part of the extension rod, the ball head file assembly comprises a ball head file, a connecting rod connected with the ball head file and a locking threaded sleeve arranged outside the connecting rod in a sleeving mode. One end of the extension rod is provided with a tensioning sleeve, the outer side of the tensioning sleeve is provided with an external thread and a conical surface, and the conical surface is provided with a plurality of open slots; and the inner side of the locking thread sleeve is provided with an internal thread and a conical extrusion surface. When the air mill structure is used, the ball head file can extend into the part, where flashes and burrs need to be removed, of a workpiece, after the flashes and the burrs are removed through the ball head file, the handle is pressed, and high-pressure airflow passing through the air mill body is blown out of the air blowing hole of the ball head file, so that the fallen flashes and the burrs are removed; the ball head file with the structure can extend into a narrow range on a workpiece through the extension rod to clean flashes and burrs, and is convenient and flexible to operate.

Description

Technical Field

[0001] The utility model relates to the field of mechanical processing technology and equipment, in particular to a gas grinder with an extension rod. Background Art

[0002] In the processing and production of automotive parts, drilling operations are very common, but removing burrs and flash after drilling is a common problem. Some people use files to remove them, while others use air grinders to remove them, and so on.

[0003] Our company is a large-scale enterprise specializing in the production of automotive drive axles. With numerous machining processes, we often use round-end files mounted on air grinders to remove burrs and flash. Commercially available air grinders are generally only effective for removing burrs on flat surfaces or near pipe openings, which presents limitations. Utility Model Content

[0004] The purpose of the utility model is to solve the defects of the prior art and provide a gas grinder with an extension rod.

[0005] In order to achieve the above purpose, the technical solution adopted by the present utility model is as follows:

[0006] An air grinder with an extension rod comprises an air grinder body, an extension rod connected to an air outlet end of the air grinder body, and a ball-end file assembly arranged at an end of the extension rod;

[0007] The ball-end file assembly includes a ball-end file, a connecting rod connected to the ball-end file, and a locking threaded sleeve sleeved on the outside of the connecting rod;

[0008] One end of the extension rod is provided with a tension sleeve, the outer side of the tension sleeve has an external thread and a tapered surface, and the tapered surface is provided with a plurality of open grooves;

[0009] The inner side of the locking threaded sleeve is provided with an internal thread and a tapered extrusion surface.

[0010] Furthermore, the end of the connecting rod is inserted into the tension sleeve, the locking threaded sleeve is arranged on the outside of the tension sleeve, and the conical extrusion surface squeezes the conical surface, so that the tension sleeve tightly holds and fixes the connecting rod.

[0011] Furthermore, a threaded sleeve is provided on the side of the extension rod away from the tension sleeve, and a screw is provided at the air outlet end of the gas grinder body, and the screw is connected to the threaded sleeve.

[0012] Furthermore, an air pipe joint is provided on one end of the air grinder body away from the extension rod, and the air pipe joint is connected to the air pipe.

[0013] Furthermore, a handle is provided on the gas grinder body.

[0014] Furthermore, the interiors of the extension rod and the connecting rod are hollow, and the ball-end file is provided with an air blowing hole communicated with the inner cavity of the connecting rod.

[0015] The beneficial effects of the utility model are as follows: when the air grinder structure is in use, the ball head file can be extended into the part of the workpiece where burrs and burrs need to be removed. After the ball head file has cleaned the burrs and burrs, the handle is pressed, and the high-pressure airflow passing through the air grinder body is blown out from the blowing hole of the ball head file, thereby cleaning the fallen burrs and burrs. The ball head file of this structure can be extended into a narrow range on the workpiece through the extension rod to clean burrs and burrs, and the operation is convenient and flexible. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the utility model;

[0017] Figure 2 This is an assembly diagram of the present invention. DETAILED DESCRIPTION

[0018] Reference Figure 1 , Figure 2 , an air grinder with an extension rod, comprising an air grinder body 1, an extension rod 2 connected to the air outlet end of the air grinder body 1, and a ball-end file assembly arranged at the end of the extension rod 2;

[0019] The ball-end file assembly includes a ball-end file 3, a connecting rod 4 connected to the ball-end file 3, and a locking threaded sleeve 5 sleeved on the outside of the connecting rod 4;

[0020] One end of the extension rod 2 is provided with a tension sleeve 6, the outer side of the tension sleeve 6 has an external thread 7 and a tapered surface 8, and the tapered surface 8 is provided with a plurality of open grooves 9;

[0021] The inner side of the locking threaded sleeve 5 is provided with an internal thread 10 and a conical extrusion surface 11 .

[0022] During assembly, the end of the connecting rod 4 is inserted into the tension sleeve 6 , the locking threaded sleeve 5 is sleeved on the outside of the tension sleeve 6 , and the conical extrusion surface 11 squeezes the conical surface 8 , so that the tension sleeve 6 holds and fixes the connecting rod 4 .

[0023] Furthermore, a threaded sleeve 12 is provided on the side of the extension rod 2 away from the tension sleeve 6 , and a screw 13 is provided at the air outlet end of the gas grinder body 1 , and the screw 13 is connected to the threaded sleeve 12 .

[0024] Furthermore, an air pipe joint 14 is provided on one end of the air grinder body 1 away from the extension rod 2 , and the air pipe joint 14 is connected to an air pipe 15 . A handle 16 is provided on the air grinder body 1 .

[0025] In this embodiment, the interiors of the extension rod 2 and the connecting rod 4 are hollow, and the ball-end file 3 is provided with an air blowing hole communicating with the inner cavity of the connecting rod 4 .

[0026] When the air grinder structure is in use, the ball file 3 can be extended into the part of the workpiece where burrs and burrs need to be removed. After the ball file 3 has cleaned the burrs and burrs, the handle is pressed, and the high-pressure airflow passing through the air grinder body 1 is blown out from the blowing hole of the ball file 3, thereby cleaning the fallen burrs and burrs. The ball file 3 of this structure can be extended into a narrow range on the workpiece through the extension rod 2 to clean burrs and burrs, and the operation is convenient and flexible.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A gas grinder with an extension rod, comprising a gas grinder body, an extension rod connected to the gas outlet end of the gas grinder body, and a ball-end file assembly provided at the end of the extension rod; It is characterized in that The ball-end file assembly includes a ball-end file, a connecting rod connected to the ball-end file, and a locking threaded sleeve sleeved on the outside of the connecting rod; One end of the extension rod is provided with a tension sleeve, the outer side of the tension sleeve has an external thread and a tapered surface, and the tapered surface is provided with a plurality of open grooves; The inner side of the locking threaded sleeve is provided with an internal thread and a tapered extrusion surface.

2. The gas grinder with an extension rod according to claim 1, characterized in that: The end of the connecting rod is inserted into the tension sleeve, the locking threaded sleeve is sleeved on the outside of the tension sleeve, and the conical extrusion surface squeezes the conical surface, so that the tension sleeve tightly holds and fixes the connecting rod.

3. The gas grinder with an extension rod according to claim 1, characterized in that: A threaded sleeve is provided on the side of the extension rod away from the tension sleeve, and a screw is provided at the air outlet end of the gas grinder body, and the screw is connected to the threaded sleeve.

4. The gas grinder with an extension rod according to claim 1, characterized in that: An air pipe joint is provided on one end of the air grinder body away from the extension rod, and the air pipe joint is connected to the air pipe.

5. The gas grinder with an extension rod according to claim 1, characterized in that: The gas grinder body is provided with a handle.

6. The gas grinder with an extension rod according to claim 1, characterized in that: The interiors of the extension rod and the connecting rod are hollow, and the ball-end file is provided with an air blowing hole communicated with the inner cavity of the connecting rod.

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