CN218903653U - Boring cutter extension bar connection structure - Google Patents

Abstract

The utility model relates to the technical field of boring cutters, in particular to a boring cutter extension bar connecting structure. The expansion sleeve is symmetrically arranged at two ends of the double slide pin respectively, and the expansion sleeve is in threaded connection with the double slide pin; the connecting part of the connecting rod and the extension rod is respectively provided with a mounting groove and a convex block, and the convex block is positioned in the mounting groove; the side surfaces of the convex blocks and the side surfaces of the mounting grooves are correspondingly provided with conical cavities and through holes respectively, and the expansion sleeves are arranged in the conical cavities; and a limiting groove communicated with the through hole is formed in the mounting groove corresponding to the expansion sleeve. The spanner is used for controlling the expansion sleeve to move, and when the expansion sleeve moves outwards, the fixed connection between the connecting rod and the extension rod can be completed; when the expansion sleeve moves inwards, the connecting rod and the extension rod can be detached. Therefore, the quick and convenient disassembly and connection of the connecting rod extension rod are realized.

Description

Boring cutter extension bar connection structure

Technical Field

The utility model relates to the technical field of boring cutters, in particular to a boring cutter extension bar connecting structure.

Background

The boring cutter is a hole processing cutter, is generally a round handle, and is also commonly used for a vertical lathe with a square cutter bar for a larger workpiece, and the most common occasions are inner hole processing, reaming, profiling and the like. However, the inner hole is not processed, and the outer circle of the end face can be processed, but is not used conventionally.

In the using process of the boring cutter, a section of extension rod is connected according to the requirement. In the prior art, the connecting structure used in the process of connecting the extension bar with the boring cutter is complex, and is not beneficial to the frequently used disassembly and assembly.

The above-described problems are a need in the art for a solution.

Disclosure of Invention

The utility model aims to provide a boring cutter extension bar connecting structure, so that the convenience of disassembly and assembly is improved.

In order to solve the technical problems, the scheme provided by the utility model is as follows: the boring cutter extension bar connecting structure comprises a connecting rod, an extension bar, a double slide pin and an expansion sleeve, wherein the connecting rod is connected with the extension bar, the expansion sleeve is respectively and symmetrically arranged at two ends of the double slide pin, and the expansion sleeve is in threaded connection with the double slide pin; the connecting rod and the extension rod are respectively provided with a mounting groove and a protruding block at the joint, and the protruding block is positioned in the mounting groove; the side surfaces of the convex blocks and the side surfaces of the mounting grooves are correspondingly provided with conical cavities and through holes respectively, and the expansion sleeve is arranged in the conical cavities; and a limiting groove communicated with the through hole is formed in the mounting groove corresponding to the expansion sleeve.

As a further improvement of the utility model, a flange is arranged in the mounting groove and positioned at one side of the protruding block, a hole penetrating into the conical cavity is arranged at the top of the protruding block, a push rod is arranged in the hole, an inclined plane is arranged on the expansion sleeve, and the inclined plane rises from inside to outside.

As a further improvement of the present utility model, the bump is 1:10 taper.

As a further improvement of the utility model, the upper end and the lower end of the flange are respectively provided with a positioning block, and the mounting groove and the convex block are provided with positioning grooves corresponding to the positioning blocks.

As a further improvement of the utility model, both end surfaces of the double slide pin are provided with countersunk heads.

The utility model has the beneficial effects that:

the double-slide pin rotating device is reasonable and simple in structure and convenient to operate, a spanner penetrates through the through hole to rotate the double-slide pin, the double-slide pin cannot move in the conical cavity, and meanwhile the expansion sleeve is connected with the double-slide pin through threads, so that when the double-slide pin is rotated, the expansion sleeves on two sides can move on the double-slide pin.

When needs carry out fixed connection to connecting rod and extension bar, use the spanner to pass the through-hole and rotate two sliding pins, the expansion shell moves to the outside for the one end of expansion shell supports in the spacing inslot portion, and the toper intracavity portion is the toper simultaneously, consequently can carry out expansion connection through self inflation and toper chamber when the expansion shell removes, consequently can realize connecting rod and extension bar's connection.

When the connecting rod and the extension bar are required to be disassembled, only the wrench is required to rotate the double slide pins, so that the expansion sleeve can move inwards, and the disassembling work can be completed. Thereby enabling quick removal and installation of the connecting rod and extension bar.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic cross-sectional view of the present utility model;

FIG. 3 is an enlarged schematic view of portion A of FIG. 2;

FIG. 4 is a schematic view of a partial explosion configuration of the connection of the connecting rod and extension rod of the present utility model;

FIG. 5 is a schematic cross-sectional view after locking;

fig. 6 is an enlarged schematic view of the portion a in fig. 5.

Reference numerals: 1. a connecting rod; 2. an extension bar; 3. a double slide pin; 4. an expansion sleeve; 41. an inclined plane; 5. a mounting groove; 6. a bump; 7. a conical cavity; 8. a through hole; 9. a limit groove; 10. a flange; 101. a positioning block; 11. and (5) a push rod.

Detailed Description

The present utility model will be further described with reference to the accompanying drawings and specific examples, which are not intended to be limiting, so that those skilled in the art will better understand the utility model and practice it.

Referring to fig. 1 to 6, an embodiment of the present utility model includes a connecting rod 1, an extension bar 2, a double slide pin 3, and an expansion sleeve 4, wherein the connecting rod 1 is connected with the extension bar 2, the expansion sleeves 4 are symmetrically arranged at two ends of the double slide pin 3, and the expansion sleeve 4 is in threaded connection with the double slide pin 3; the connecting part of the connecting rod 1 and the extension bar 2 is respectively provided with a mounting groove 5 and a protruding block 6, and the protruding block 6 is positioned in the mounting groove 5; the side surface of the protruding block 6 and the side surface of the mounting groove 5 are correspondingly provided with a conical cavity 7 and a through hole 8 respectively, and the expansion sleeve 4 is arranged in the conical cavity 7; the mounting groove 5 is provided with a limit groove 9 communicated with the through hole 8 corresponding to the expansion sleeve 4.

In the use, use the spanner to pass through hole 8, rotate double slide pin 3, double slide pin is unable removal in conical chamber 7 inside, and expansion shell 4 and double slide pin 3 are through threaded connection simultaneously, therefore when rotating double slide pin 3, expansion shell 4 of both sides can remove on double slide pin 3. When needs carry out fixed connection to connecting rod 1 and extension bar 2, use the spanner to pass the through-hole and rotate two sliding pin 3 for expansion shell 4 moves outside, makes the one end of expansion shell 4 support inside spacing groove 9, and the inside toper that is of toper chamber 7 simultaneously, consequently can carry out expansion connection through self inflation and toper chamber 7 when expansion shell 4 moves, consequently can realize connecting rod 1 and extension bar 2's connection. When the connecting rod 1 and the extension bar 2 are required to be disassembled, only the wrench is required to rotate the double slide pin 3, so that the expansion sleeve 4 can move inwards, and the disassembling work can be completed. So that quick detachment and installation of the connecting rod 1 and the extension bar 2 can be achieved.

As shown in fig. 3 and 4, the mounting groove 5 and the bump 6 are difficult to separate at one time during the disassembly, so that the convenience of the disassembly can be further improved, the flange 10 is arranged on one side of the bump 6 inside the mounting groove 5, the hole penetrating into the conical cavity 7 is arranged at the top of the bump 6, the ejector rod 11 is arranged in the hole, the inclined surface 41 is arranged on the expansion sleeve 4, and the inclined surface 41 is lifted from inside to outside. Upon removal, the expansion shell 4 will move inwardly, so that one end of the ram 11 will move along the inclined surface 41 within the bore. Since the inclined surface 41 is arranged to rise from inside to outside, the other end of the ejector rod 11 can apply force to the inside of the mounting groove 5, so that the mounting groove 5 and the protruding block 6 can be separated conveniently and detached therefrom when the mounting groove is detached.

In this embodiment, the bump 6 is 1:10 taper frustum, through the cooperation connection of 1:10 micro taper boss 6 cooperation flange 10, can provide the interference that rigid connection required, can guarantee the straightness accuracy that the multistage was prolonged again, can provide powerful support when cutting atress moreover.

As shown in fig. 4, positioning blocks 101 are respectively arranged at the upper end and the lower end of the flange 10, and positioning grooves are formed in the mounting groove 5 and the protruding block 6 corresponding to the positioning blocks 101. Through the cooperation of locating piece 101 and constant head tank, avoid flange 10 at the low cost of work, improve its stability of working.

In this embodiment, the two end faces of the double slide pin 3 are both provided with countersunk heads, which are generally inner hexagonal, and the double slide pin 3 can be rotated by using an outer hexagonal wrench.

During actual operation, when needs carry out fixed connection to connecting rod 1 and extension bar 2, use the spanner to pass the through-hole and rotate two sliding pin 3, expansion shell 4 outside removes for the one end of expansion shell 4 supports inside spacing groove 9, and expansion shell 4 can carry out expansion connection through self inflation and toper chamber 7, realizes connecting rod 1 and extension bar 2's connection. When the connecting rod 1 and the extension bar 2 need to be disassembled, only the wrench is used for rotating the double slide pins 3, so that the expansion sleeve 4 moves inwards, the ejector rod 11 can apply force to the mounting groove 5, the mounting groove 5 and the protruding block 6 can be separated conveniently, and the disassembling work can be completed. So that quick detachment and installation of the connecting rod 1 and the extension bar 2 can be achieved.

It will be understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, steps, operations, devices, components, and/or groups thereof.

The terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship based on that shown in the drawings, merely for convenience of description and to simplify the description, and do not denote or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the utility model.

The terms "first," "second," "third," and the like, as used herein, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Unless specifically stated or limited otherwise, the terms "mounted," "connected," and "coupled" should be construed broadly, as if they were fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the present utility model and the accompanying drawings, or direct or indirect application in other related technical fields, are included in the scope of the present utility model.

Claims (5)

1. The boring cutter extension bar connecting structure is characterized by comprising a connecting rod (1), an extension bar (2), a double sliding pin (3) and an expansion sleeve (4), wherein the connecting rod (1) is connected with the extension bar (2), the expansion sleeve (4) is symmetrically arranged at two ends on the double sliding pin (3) respectively, and the expansion sleeve (4) is in threaded connection with the double sliding pin (3); the connecting rod (1) and the lengthening rod (2) are respectively provided with a mounting groove (5) and a bump (6), and the bump (6) is positioned in the mounting groove (5); the side surfaces of the protruding blocks (6) and the side surfaces of the mounting grooves (5) are correspondingly provided with conical cavities (7) and through holes (8) respectively, and the expansion sleeve (4) is arranged in the conical cavities (7); and a limiting groove (9) communicated with the through hole (8) is formed in the mounting groove (5) corresponding to the expansion sleeve (4).

2. The boring cutter extension bar connecting structure according to claim 1, wherein a flange (10) is arranged in the mounting groove (5) and positioned on one side of the protruding block (6), a hole penetrating into the conical cavity (7) is formed in the top of the protruding block (6), a push rod (11) is arranged in the hole, an inclined surface (41) is arranged on the expansion sleeve (4), and the inclined surface (41) is lifted from inside to outside.

3. A boring cutter extension bar connection structure according to claim 1, wherein the bump (6) is a 1:10 taper frustum.

4. The connecting structure of the boring cutter extension bar according to claim 2, wherein positioning blocks (101) are respectively arranged at the upper end and the lower end of the flange (10), and positioning grooves are formed in the mounting groove (5) and the protruding blocks (6) corresponding to the positioning blocks (101).

5. The boring cutter extension bar connecting structure according to claim 1, wherein countersunk heads are arranged on two end faces of the double slide pin (3).

Images