CN218891207U

CN218891207U - Composite boring tool for machine head frame

Info

Publication number: CN218891207U
Application number: CN202223340830.8U
Authority: CN
Inventors: 陈福志; 王晓宙; 吴智超
Original assignee: China Coal Zhangjiakou Coal Mining Machinery Co Ltd
Current assignee: China Coal Zhangjiakou Coal Mining Machinery Co Ltd
Priority date: 2022-12-14
Filing date: 2022-12-14
Publication date: 2023-04-21
Anticipated expiration: 2032-12-14

Abstract

The utility model relates to a composite boring tool for a machine head frame, which is mainly used for the finish machining process of shaft holes and annular grooves of a mining machine head frame with specific shapes and multiple specifications. The main technical characteristics are that the fine machining of the head frame shaft hole and the annular groove with specific shapes is realized by adopting a sliding block structure, changing the rotation size of a boring cutter through adjusting the extending length of the sliding block and using the rotation movement of the boring milling machine main shaft with higher rigidity. The special tool is simple in structure and wide in application range, can meet the requirements of finish machining coaxiality of shaft holes and annular grooves of the mining machine head frame with various specifications of specific shapes, and is simple, clear, visual, economical and practical in whole operation.

Description

Composite boring tool for machine head frame

Technical Field

The utility model relates to a composite boring tool for a machine head frame, which is mainly used for the finish machining process of shaft holes and annular grooves of a mining machine head frame with specific shapes and multiple specifications.

Background

The shaft hole and the annular groove of the mining machine head frame are used for assembling a mining conveyor transmission device, and the coaxiality requirements of the shaft hole and the annular groove are extremely high. The traditional machining mode adopts a numerical control boring and milling machine to bore a shaft hole and mill a circular groove, the precision of the product depends on the repeated positioning precision of a machine tool and the linkage precision of each motion shaft, and when the precision of the machine tool is reduced, unqualified products are easily produced; two kinds of cutters are required to be replaced for boring and milling annular grooves, and the boring cutter head which is generally adopted is large in overall quality and large in labor intensity of operators; human errors can be generated in the two tool changing processes, and the final precision is reduced.

Disclosure of Invention

The utility model aims to provide a composite boring tool for a machine head frame, which is used for realizing the finish machining process of shaft holes and annular grooves of the machine head frame for mines with specific shapes and multiple specifications.

The key technology of the utility model is as follows: a composite boring tool for a machine head frame comprises an axial boring cutter, a radial boring cutter, a boring cutter holder, a compression screw, a sliding block seat, a cutter handle and a sliding block supporting plate.

The sliding block supporting plate is positioned and welded with the front end excircle of the knife handle through the inner hole; the sliding block seat and the sliding block supporting plate are welded together; the sliding block is connected with a key of the sliding block supporting plate through a key slot and is fastened with the sliding block seat through a compression screw; the boring cutter holder is welded with the sliding block; the axial boring cutter and the radial boring cutter are assembled with the boring cutter seat through the compression screw;

when in use, the machine head frame is placed on a machine tool workbench, and is fixed with the machine tool workbench by using a pressing plate bolt; the conical surface at the rear end of the cutter handle is connected with a main shaft of a machine tool, an axial boring cutter or a radial boring cutter is selected according to the outline shape and the size of a part to be machined of the machine head frame, and after the length of the sliding block is adjusted to be proper, the boring cutter is pressed by a pressing screw, so that boring machining can be realized.

The beneficial effects of the utility model are as follows:

(1) The finish machining process of the shaft holes and the annular grooves of the machine head frame with specific shapes and various specifications can be realized;

(2) The degree of dependence of the machining precision of the machine head frame on the precision of the machine tool can be reduced;

(3) The precision requirement of coaxiality can be ensured without changing a cutter to process the shaft hole and the annular groove of the machine head;

the technical scheme of the utility model is described in detail below with reference to the accompanying drawings and the specific embodiments.

Description of the drawings:

FIG. 1 is a schematic diagram of the composite boring operation of the nose frame of the present utility model;

FIG. 2 is a front view of the initial dimensions of the composite boring tool for a nose frame of the present utility model;

FIG. 3 is a front view of the adjustable dimension of the composite boring tool for the nose frame of the present utility model.

In the figure: 1 axial boring cutter, 2 radial boring cutter, 3 boring cutter seat, 4 compression screw, 5 slider, 6 slider seat, 7 handle of a knife, 8 slider backup pad, 9 headstock.

Detailed Description

As shown in fig. 1, 2 and 3, before finishing the headstock, placing the headstock on a machine tool workbench, and fixing the headstock and the machine tool workbench by using a pressing plate bolt; loosening a compression screw on a sliding block seat, loading the sliding block, slightly compressing the compression screw, and preventing the sliding block from falling off; loosening a compression screw on the boring cutter holder, and loading the radial boring cutter; loading the cutter handle into a main shaft of a machine tool, and locking; measuring the diameter D of the shaft hole of the headstock and the initial D1 of the radial boring cutter, roughly adjusting the extension length delta L1 of the sliding block, and fastening a compression screw on the sliding block seat; and (3) trial cutting the shaft hole, determining machining allowance, finely adjusting the extending length delta L2 of the radial boring cutter, and fastening a compression screw to perform boring of the shaft hole D.

After the shaft hole is machined, loosening a compression pin on the boring cutter holder, loading an axial boring cutter, and fastening a compression screw after adjusting the axial extension length of the cutter; measuring the diameter H of the annular groove of the machine head frame and the size H1 of the axial boring cutter, determining machining allowance, roughly adjusting the extending length delta L1 of the sliding block, tightly fastening the compression screw, then trial cutting the annular groove, determining final machining allowance, finely adjusting the extending length delta L1 of the sliding block, and tightly fastening the sliding block to perform boring of the annular groove H.

It should be understood that the detailed description of the technical solution of the present utility model, given by way of preferred embodiments, is illustrative and not restrictive. Modifications and substitutions for some technical features of the embodiments may be made by those skilled in the art on the basis of the present description, and the essence of the corresponding technical solutions does not deviate from the spirit and scope of the technical solutions of the embodiments.

Claims

1. The utility model provides a compound boring frock of aircraft nose frame which characterized in that: the device comprises an axial boring cutter (1), a radial boring cutter (2), a boring cutter seat (3), a compression screw (4), a sliding block (5), a sliding block seat (6), a cutter handle (7) and a sliding block supporting plate (8); the slide block supporting plate (8) is positioned and welded with the front end excircle of the knife handle (7) through an inner hole; the sliding block seat (6) and the sliding block supporting plate (8) are welded together; the sliding block (5) is connected with a key of the sliding block supporting plate (8) through a key slot and is fastened with the sliding block seat through a compression screw (4); the boring cutter holder (3) and the sliding block (5) are welded together; the axial boring cutter (1) and the radial boring cutter (2) are assembled with the boring cutter seat (3) through the compression screw (4); the headstock (9) is fixed with a machine tool workbench through a pressing plate bolt; the rear end conical surface of the knife handle (7) is connected with the main shaft of the machine tool.

2. The machine head frame compound boring tool according to claim 1, wherein the axial boring tool (1) and the radial boring tool (2) can be selected according to the outline shape and the size of a part to be processed, when the boring machine head frame (9) penetrates through the shaft hole D, the radial boring tool (2) can be selected, and the adjustment of the cutting radius of the radial boring tool (2) is realized through the sliding of the sliding block (5) and the fastening of the compression screw (4); when boring the inner circle H of the annular groove of the headstock (9), an axial boring cutter (1) can be selected, and the adjustment of the cutting radius of the axial boring cutter (1) is realized through the sliding of the sliding block (5) and the fastening of the compression screw (4).