CN111112737B

CN111112737B - Broaching tool for processing small-caliber gun body tube inner hole rifling

Info

Publication number: CN111112737B
Application number: CN201911188644.7A
Authority: CN
Inventors: 雷艳; 王元飞; 王拓; 张瑞莉
Original assignee: Xi'an Kunlun Industry Group Co ltd
Current assignee: Xi'an Kunlun Industry Group Co ltd
Priority date: 2019-11-28
Filing date: 2019-11-28
Publication date: 2021-03-05
Anticipated expiration: 2039-11-28
Also published as: CN111112737A

Abstract

The invention discloses a broaching tool for processing a small-caliber gun barrel pipe inner hole rifling, which comprises: the broaching mechanism is detachably arranged on the left side of the clamping mechanism; the clamping mechanism comprises: the first flange plate is circular; the positioning column, the positioning column inner chamber is the rectangle, positioning column fixed connection is in the left side of first ring flange, four first screws have been seted up along circumference to the outer wall of positioning column. The multifunctional gun barrel broaching tool can be detached and installed, replacement of the wire-pulling tool rods with different diameters is facilitated, and then rifling broaching of gun barrels with different inner diameters is achieved.

Description

Broaching tool for processing small-caliber gun body tube inner hole rifling

Technical Field

The invention relates to the technical field of cutters, in particular to a broaching cutter for machining a rifling of an inner hole of a small-caliber gun barrel pipe.

Background

The processing technology of the rifling of the gun barrel generally comprises the technological methods of extrusion, broaching, electrolytic processing and the like. The rifling is suitable for shallower rifling and is mainly used for rifling of gun barrels. At present, mechanical broaching and electrolytic machining are mainly adopted in barrel rifling processing of the domestic artillery industry, a multi-purpose broaching method for medium and large calibers is adopted, and electrolytic machining is generally adopted in barrel rifling of small-caliber artillery. Because some factories do not have electrolytic machining equipment and lack machining experience, a set of special cutter system needs to be designed on the basis of the existing equipment of enterprises to realize the machining of the rifling of the small-caliber gun barrel;

for broaching the rifling of the small-caliber gun barrel, at present, single-tool broaching is adopted, broaching for many times is often needed, the broaching of the rifling of one gun barrel can be completed, time and labor are wasted, the practicability is poor, in addition, gun models are different, and the inner diameters of gun barrels are also different, so that a multi-tool cutter convenient for replacing a stay wire cutter rod is necessary to be provided.

Disclosure of Invention

The invention aims to provide a broaching tool for machining rifling of an inner hole of a small-bore gun barrel pipe, which at least solves the problems that a wire-drawing cutter bar in the prior art is inconvenient to replace and the single-tool broaching efficiency is low.

In order to achieve the purpose, the invention provides the following technical scheme: a broaching tool for machining a bore rifling in a bore of a small bore firearm barrel, comprising: the broaching mechanism is detachably arranged on the left side of the clamping mechanism;

the clamping mechanism comprises: the first flange plate is circular; the positioning column, the positioning column inner chamber is the rectangle, positioning column fixed connection is in the left side of first ring flange, four first screws have been seted up along circumference to the outer wall of positioning column.

The broaching mechanism includes: the inner wall of the left side of the stay wire cutter rod is circumferentially provided with a plurality of slideways, the left side of the outer wall of the stay wire cutter rod is circumferentially provided with a plurality of positioning grooves, and the positioning grooves are communicated with the slideways; the positioning unit is fixedly connected to the right side of the stay wire cutter bar; the cutter is inserted into the inner cavity of the positioning groove, and the inner side of the cutter is provided with a limiting groove; the sliding rod is inserted into the left inner cavity of the stay wire cutter rod; the sliding blocks are fixedly connected to the outer wall of the sliding rod along the circumferential direction and are all inserted into the sliding ways and the limiting grooves; the second flange plate is fixedly connected to the left side of the outer wall of the sliding rod and locked to the left side of the stay wire cutter rod through bolts.

The positioning unit includes: the inserting rod is fixedly connected to the right side of the stay wire cutter rod, the inserting rod and the stay wire cutter rod rotate coaxially, the inserting rod is adaptive to be inserted into the inner cavity of the positioning column, and the inserting rod and the first screw hole are fixed through bolt screwing.

Preferably, the outer side of the cutter is higher than the outer wall of the wire drawing cutter rod.

Preferably, the limiting groove is in a dovetail groove shape, and the sliding block is in adaptive insertion connection with the limiting groove.

The broaching tool for processing the inner hole rifling of the small-caliber gun barrel pipe has the beneficial effects that:

1. the wire drawing cutter bar can be detached and installed through the matching of the clamping mechanism and the positioning unit, so that the wire drawing cutter bars with different diameters can be conveniently replaced, and further, the rifling broaching of gun barrels with different inner diameters can be realized;

2. the broaching mechanism can be used for installing a plurality of cutters, so that one-time broaching of rifling of the gun barrel is completed, the time and labor are saved, the practicability is high, and the broaching of the rifling of the small-diameter gun barrel is facilitated.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an exploded view of the clamping mechanism of FIG. 1;

FIG. 3 is a schematic view of the broaching mechanism of FIG. 1;

FIG. 4 is a front cross-sectional view of FIG. 3;

fig. 5 is a left side sectional view of fig. 3.

In the figure: 2. the clamping mechanism 21, the first flange plate 22, the positioning column 23, the first screw hole 3, the broaching mechanism 31, the wire pulling cutter rod 32, the positioning unit 321, the inserting rod 322, the second screw hole 33, the slide way 34, the positioning groove 35, the cutter 36, the limiting groove 37, the slide rod 38, the slide block 39 and the second flange plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a technical solution: the utility model provides a broaching cutter of processing small-bore gun body pipe inner bore rifling, includes clamping machine structure 2 and broaching machine structure 3, and broaching machine structure 3 can dismantle to set up in the left side of clamping machine structure 2.

Clamping machine structure 2 includes first ring flange 21, reference column 22 and first screw 23, and first ring flange 21 is circular, locks first ring flange 21 on the lathe headstock through the bolt, can realize the installation of clamping machine structure 2, and reference column 22 inner chamber is the rectangle, and reference column 22 fixed connection is in the left side of first ring flange 21, and four first screws 23 have been seted up along circumference to the outer wall of reference column 22, passes first screw 23 with the bolt and locks on inserted bar 321, can be fixed to inserted bar 321.

The broaching mechanism 3 comprises a stay wire cutter rod 31, a positioning unit 32, a slide way 33, a positioning groove 34, a cutter 35, a limiting groove 36, a slide rod 37, a slide block 38 and a second flange plate 39, wherein the inner wall of the left side of the stay wire cutter rod 31 is circumferentially provided with a plurality of slide ways 33, the slide rod 37 is limited through the matching of the slide ways 33 and the slide blocks 38, the rotation of the slide rod 37 is avoided, the left side of the outer wall of the stay wire cutter rod 31 is circumferentially provided with a plurality of positioning grooves 34, the positioning grooves 34 are communicated with the slide ways 33, the cutter 35 is positioned through the positioning grooves 34, the number of the positioning grooves 34 can be installed according to the number of rifling lines to be broached, the positioning unit 32 is fixedly connected to the right side of the stay wire cutter rod 31, the cutter 35 is inserted into the inner cavity of the positioning grooves 34, the limiting groove 36 is arranged on the inner side of the cutter 35, the sliding blocks 38 are fixedly connected to the outer wall of the sliding rod 37 along the circumferential direction, the sliding blocks 38 are all inserted into the sliding channel 33 and the limiting groove 36, the second flange plate 39 is fixedly connected to the left side of the outer wall of the sliding rod 37, and the second flange plate 39 is locked to the left side of the stay wire cutter rod 31 through bolts.

The positioning unit 32 includes: the inserting rod 321 is fixedly connected to the right side of the pull rod bar 31, the inserting rod 321 and the pull rod bar 31 rotate coaxially, the inserting rod 321 is inserted into an inner cavity of the positioning column 22 in a matched mode, it is ensured that a contact surface between the positioning column 22 and the inserting rod 321 is a plane, the positioning column 22 and the inserting rod 321 are restricted with each other, synchronous rotation is achieved, and the inserting rod 321 and the first screw hole 23 are fixed through bolt screwing.

Preferably, the outer side of the cutter 35 is higher than the outer wall of the stay rod 31 to ensure that the cutter 35 can contact the inner diameter of the gun barrel, and the projected part of the cutter 35 is used for broaching the rifling.

As a preferable scheme, further, the shape of the limiting groove 36 is a dovetail groove shape, and the sliding block 38 is inserted into the limiting groove 36 in a matching manner, so that the sliding block 38 is prevented from being separated from the limiting groove 36, the cutter 35 can be stably fixed in the positioning groove 34, and the stable broaching of the gun barrel can be realized.

The detailed connection means is a technique known in the art, and the following mainly describes the working principle and process, and the specific operation is as follows.

When the stay wire cutter rod 31 needs to be replaced, the bolt for locking the inserted rod 321 is rotated, the inserted rod 321 can be detached from and inserted into the positioning column 22, so that the replacement of the stay wire cutter rod 31 is realized, when the cutter 35 needs to be replaced, the bolt for locking the second flange plate 39 is detached, the fixing of the sliding rod 37 is released, the sliding rod 37 is pulled out, the sliding block 38 is separated from the limiting groove 36 and the sliding way 33 in sequence, the fixing of the cutter 35 is released, all worn cutters 35 are taken down, the cutter 35 to be processed is inserted into the positioning groove 34, then the sliding block 38 is inserted into the sliding way 33 through the sliding rod 37, the sliding block 38 passes through the limiting groove 36 on the cutter 35, the bolt is screwed into the stay wire cutter rod 31 again, the sliding rod 37 is fixed, the replacement of the cutter 35 is realized, therefore, the replacement of the stay wire cutter rod 31 is convenient during use, a plurality of cutters 35 can be installed, and the disposable broaching of gun barrels with different inner diameters, time and labor are saved, the broaching efficiency is high, and the broaching machine is more beneficial to popularization.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A broaching tool for processing a bore rifling of a small-bore gun body tube is characterized by comprising:

the broaching machine comprises a clamping mechanism (2) and a broaching mechanism (3), wherein the broaching mechanism (3) is detachably arranged on the left side of the clamping mechanism (2);

the clamping mechanism (2) comprises:

the first flange plate (21), the first flange plate (21) is circular;

the inner cavity of the positioning column (22) is rectangular, the positioning column (22) is fixedly connected to the left side of the first flange plate (21), and four first screw holes (23) are formed in the outer wall of the positioning column (22) along the circumferential direction;

the broaching mechanism (3) includes:

the wire drawing knife rod (31), the inner wall of the left side of the wire drawing knife rod (31) is circumferentially provided with a plurality of slide ways (33), the left side of the outer wall of the wire drawing knife rod (31) is circumferentially provided with a plurality of positioning grooves (34), and the positioning grooves (34) are communicated with the slide ways (33);

the positioning unit (32), the said positioning unit (32) is fixedly connected to the right side of the cutter arbor (31) of the guy;

the cutter (35) is inserted into the inner cavity of the positioning groove (34), and a limiting groove (36) is formed in the inner side of the cutter (35);

the sliding rod (37) is inserted into a left inner cavity of the stay wire cutter bar (31);

the sliding blocks (38) are fixedly connected to the outer wall of the sliding rod (37) along the circumferential direction, and the sliding blocks (38) are all inserted into the sliding way (33) and the limiting groove (36);

the second flange plate (39) is fixedly connected to the left side of the outer wall of the sliding rod (37), and the second flange plate (39) is locked on the left side of the stay wire cutter rod (31) through bolts;

the positioning unit (32) comprises: the inserting rod (321) is fixedly connected to the right side of the wire pulling cutter rod (31), the inserting rod (321) and the wire pulling cutter rod (31) rotate coaxially, the inserting rod (321) is matched and inserted into an inner cavity of the positioning column (22), and the inserting rod (321) is fixed with the first screw hole (23) through a bolt in a threaded mode.