CN220533128U - Reaming drill sleeve with thread guide - Google Patents

Abstract

The utility model belongs to the technical field of riveting, and particularly relates to a reaming drill sleeve with a threaded guide. The drilling tool comprises a drilling sleeve and a nut, wherein the nut is of a columnar step structure, an internal thread matched with an external thread of a reaming workpiece is arranged on a cavity of the nut, the drilling sleeve is cylindrical, two sections of cylindrical cavities with different diameters are arranged in the drilling sleeve, the shapes of a large cylindrical cavity and a small cylindrical end of the nut are mutually matched, and a small cylindrical cavity of the drilling sleeve is used for a reamer to pass through. The tool is matched with a machined workpiece through threaded connection, so that coaxiality of the tool and a workpiece hole is guaranteed, the guidance quality of reamer machining is improved, meanwhile, repeated disassembly of a matched nut is avoided through changing different drill sleeves, and reaming efficiency is greatly improved. The reaming tool is simple in structure and convenient to carry, reduces the production cost of the tool, increases the practicality and convenience of parts, and is convenient for subsequent popularization.

Description

Reaming drill sleeve with thread guide

Technical Field

The utility model belongs to the technical field of riveting, and particularly relates to a reaming drill sleeve with a threaded guide.

Background

The reaming plays an important role in machining, and is a high-precision hole machining method, so that the precision and the finish perpendicularity of the hole meet the production requirements, and the reaming method can be divided into a machine reaming type and a hand reaming type. The guiding property of the reamer is one of factors influencing reaming precision during hand reaming, and the design of the reaming tool with good guiding performance and high position precision is particularly important. The universal part reaming tool takes other key intersection points as positioning references, is complex in working design, and is not suitable for the working conditions of simple part structures and narrow construction space. Aiming at a machined workpiece with external threads, a matched reaming drill sleeve with the threads is designed by utilizing the guiding function of the threads, so that the reaming convenience is improved and the reaming precision is ensured.

Disclosure of Invention

When reaming is carried out on the joint with external threads, the coaxiality of the reamer and the center of the hole is ensured, and meanwhile, the convenience of reaming is improved.

Technical proposal

The utility model provides a reaming drill bushing of area screw thread direction, includes drill bushing 1, nut 2 is column step structure, is equipped with the internal thread that matches each other with reaming work piece external screw thread on the nut 2 cavity, and drill bushing 1 is cylindric, and inside is equipped with two sections cylinder cavitys that the diameter is different, and big cylinder cavity matches each other with the little cylinder end appearance of nut 2, and the little cylinder cavity of drill bushing 1 supplies the reamer to pass through.

Further, a handle is arranged on the side wall of the drill sleeve 1.

Further, the drill bushing 1 and the nut 2 are both made of cast iron.

Further, the coaxiality of the drill bushing 1 and the nut 2 is required to be not more than 0.04mm.

Further, the internal thread height of the nut 2 should be not less than the external thread height of the reaming workpiece.

Furthermore, the small cylindrical cavity of the drill sleeve 1 is provided with various specifications and is of a replaceable structure.

Further, the large end face of the nut 2 is specifically in a hexagonal structure.

Technical effects

The tool is matched with a machined workpiece through threaded connection, so that coaxiality of the tool and a workpiece hole is guaranteed, the guidance quality of reamer machining is improved, meanwhile, repeated disassembly of a matched nut is avoided through changing different drill sleeves, and reaming efficiency is greatly improved. The reaming tool is simple in structure and convenient to carry, reduces the production cost of the tool, increases the practicality and convenience of parts, and is convenient for subsequent popularization.

Furthermore, the tool can be used for manually matching drilling of workpieces with thicker and higher hardness, improves the guidance quality of a drill bit, avoids larger deviation of coaxiality during primary machining of holes, reduces the hole making quality and influences the assembly of subsequent parts.

Drawings

FIG. 1 is a schematic illustration of the use of the tool;

FIG. 2 is a schematic diagram of the tool;

FIG. 3 is a schematic view of a drill sleeve;

fig. 4 is a schematic view of a nut.

Detailed Description

The utility model is further described below with reference to examples. The following description is of some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in the figure, the hexagonal nut is firstly arranged on the workpiece to be reamed until the threaded area of the workpiece completely enters the hexagonal nut, then the groove at the lower part of the quick-change drill bushing is matched with the stepped guide sleeve of the hexagonal nut, so that reaming can be performed, and one-expansion three-reaming is completed by replacing the quick-change drill bushing with different inner diameters.

The reaming tool with the thread guide comprises a drill sleeve 1 and a nut 2, wherein the nut 2 is of a columnar step structure, an internal thread matched with an external thread of a reaming workpiece is arranged on a cavity of the nut 2, the drill sleeve 1 is of a cylinder shape, two sections of cylindrical cavities with different diameters are arranged inside the drill sleeve, the large cylindrical cavity is matched with the small cylindrical end of the nut 2 in appearance, and the small cylindrical cavity of the drill sleeve 1 is used for a reamer to pass through.

Furthermore, the side wall of the drill sleeve 1 is provided with a handle, so that the drill sleeve is convenient to hold.

Further, the drill bushing 1 and the nut 2 are both made of cast iron. The cast iron has strong rigidity, is not easy to wear and prolongs the service life of the tool.

Further, the coaxiality of the drill bushing 1 and the nut 2 is required to be not more than 0.04mm, and if the coaxiality is too large, the bolt cannot be assembled.

Further, the internal thread height of the nut 2 should be not less than the external thread height of the reaming workpiece. The too small internal thread height not only can make the tool not firm when using, but also can enlarge the coaxiality tolerance of the nut 2 and the reaming workpiece, and influence reamer guiding.

Furthermore, the small cylindrical cavity of the drill bushing 1 is provided with a plurality of specifications, so that the drill bushing 1 is of a replaceable structure, and different drill bushings 1 are selected according to the reaming process steps.

Furthermore, the large end face of the nut 2 is in a hexagonal structure, so that the nut 2 can be conveniently installed and detached. The hexagonal head nut matched with the external thread of the joint is added, and the quick-change drill sleeve is matched, so that the quick reaming of the joint is realized

It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein. While the foregoing is directed to embodiments of the present utility model, other and further details of the utility model may be had by the present utility model, it should be understood that the foregoing description is merely illustrative of the present utility model and that no limitations are intended to the scope of the utility model, except insofar as modifications, equivalents, improvements or modifications are within the spirit and principles of the utility model.

Claims (7)

1. The utility model provides a take reaming drill bushing of screw thread direction, its characterized in that, including drill bushing (1), nut (2) are column step structure, are equipped with the internal thread that matches each other with reaming work piece external screw thread on nut (2) cavity, and drill bushing (1) are cylindric, and inside is equipped with two sections cylinder cavitys that the diameter is different, and big cylinder cavity matches each other with the little cylinder end appearance of nut (2), and the little cylinder cavity of drill bushing (1) supplies the reamer to pass through.

2. A screw-guided reaming drill bushing according to claim 1, characterized in that the side wall of the bushing (1) is provided with a handle.

3. A screw-guided reaming drill bushing according to claim 1, characterized in that the bushing (1) and the nut (2) are both made of cast iron.

4. A screw-guided reaming drill bushing according to claim 1, characterized in that the coaxiality requirement of the bushing (1) and the nut (2) is not more than 0.04mm.

5. A screw-guided reaming drill bushing according to claim 1, characterized in that the internal screw thread height of the nut (2) is not smaller than the external screw thread height of the reaming workpiece.

6. A screw-guided reaming drill bushing according to claim 1, characterized in that the small cylindrical cavity of the bushing (1) is provided with a plurality of gauges, being of exchangeable construction.

7. A screw-guided reaming drill bushing according to claim 1, characterized in that the large end face of the nut (2) is embodied as a hexagonal structure.