CN212495587U

CN212495587U - Self-centering flat drill bit for processing female cone inner hole

Info

Publication number: CN212495587U
Application number: CN202021100185.0U
Authority: CN
Inventors: 王文昆; 刘海风
Original assignee: Tonghua Petroleum Tools Co Ltd
Current assignee: Tonghua Petroleum Tools Co Ltd
Priority date: 2020-06-15
Filing date: 2020-06-15
Publication date: 2021-02-09
Anticipated expiration: 2030-06-15

Abstract

The utility model relates to an oil field well workover instrument field is fit for the female flat drill bit of feeling relieved of boring the processing of bore of deep hole promptly. The bit body at the front end of the cutter bar is transversely inserted into the front opening transverse groove, two V-shaped angle-row cutting grooves are processed on the surface of the cutter bar along the length direction, a cutting fluid hole leading to the bit body is processed in the cutter bar along the length direction, a fluid outlet for pouring cutting fluid is arranged beside the bit body in the cutting fluid hole, and the bit body and the front opening transverse groove of the cutter bar are in tight fit. The cutter comprises a lengthened cutter bar and a drill bit body, two V-shaped angle cutting grooves and a cutting fluid hole leading to the drill bit body are machined in the surface of the cutter bar along the length direction, the cutting fluid is poured conveniently, chips are taken away by utilizing the water pressure of the cutting fluid hole and reach an automatic chip removal groove, the time wasted by repeated chip removal is saved, the labor intensity is reduced, and the efficiency is greatly improved. The drill body and the transverse groove of the front opening of the cutter bar are in tight fit, and are not fixed structures, so that the drill body and the cutter bar float up and down in the drilling process to play a self-centering role.

Description

Self-centering flat drill bit for processing female cone inner hole

Technical Field

The utility model relates to an oil field well workover instrument field is fit for the female flat drill bit of feeling relieved of boring the processing of bore of deep hole promptly.

Background

In the prior art, when a deep-hole workpiece is processed, for example, a female cone of an oil field fishing tool (see fig. 4), the female cone is the most common fishing tool for fishing in oil field workover operations, and is an external fishing tool (i.e., fishing the outer circle of a downhole tubular column and using teeth for fishing). The female awl of preparation must be processed with the solid material of round steel, and the processing (boring the hole) of hole is the first process of female awl processing, and when the hole processing reached the certain degree, the finish turning of interior taper hole and salvage tooth could be carried out. In the past, the machining is manually completed by a twist drill and a machine tool tailstock, when a deep hole long workpiece is machined, effective chip removal of the twist drill is not more than 200mm, chip removal must be repeated after a certain drill depth length, the labor intensity is high, the efficiency is low, time is wasted, and after the deep hole is too deep, the drill bit body is easy to break due to the fact that the chips cannot be effectively removed, cutting fluid cannot be poured to take away heat, and tool loss is large. If the twist drill is used, the single twist drill is 500-1000 yuan, and the processing difficulty is large.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the aforesaid not enough and provide one kind and do benefit to the long processing of deep hole, improve production efficiency's female awl hole processing from the flat drill bit of centering.

The technical solution of the utility model is that: female awl hole processing from line-up flat drill bit of feeling relieved, it comprises extension cutter arbor and two body swing joint of bit body its characterized in that, the cutter arbor front end has preceding open transverse groove, the bit body violently inserts in preceding open transverse groove, at the cutter arbor surface along length direction processing two V-arrangement angle rows cut the recess, two V-arrangement angle rows cut the recess along the circumference surface interval 180 degrees and arrange, it has the cutting fluid hole that leads to the bit body to process along length direction in the cutter arbor, the cutting fluid hole has the liquid outlet of pouring cutting fluid beside the bit body, the bit body is the tight fit with cutter arbor preceding open transverse groove.

The bit body is made of a white steel square blade made of W18Cr4V material.

The utility model has the advantages that: 1. the cutter comprises a lengthened cutter bar and a drill bit body, two V-shaped angle cutting grooves and a cutting fluid hole leading to the drill bit body are machined in the surface of the cutter bar along the length direction, the cutting fluid is poured conveniently, chips are taken away by utilizing the water pressure of the cutting fluid hole and reach an automatic chip removal groove, the time wasted by repeated chip removal is saved, the labor intensity is reduced, and the efficiency is greatly improved. 2. The drill body and the transverse groove of the front opening of the cutter bar are in tight fit, and are not fixed structures, so that the drill body and the cutter bar float up and down in the drilling process to play a self-centering role. Thereby improving economic benefits. 3. The drill bit body is formed by square sharpening of a W18Cr4V white steel knife, has good hot red hardness, and effectively solves the problems of poor heat dissipation of deep hole processing and high-temperature bearing working environment. 4. The drill bit body is made by self, the processing and manufacturing cost is less than 100 yuan, and the cost is low.

Embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

Drawings

Fig. 1 is a schematic view of the three-dimensional structure of the present invention.

Fig. 2 is a schematic diagram of the center section structure of the present invention.

FIG. 3 is a schematic view of a bit body configuration.

Fig. 4 is a schematic diagram of a female cone structure.

Detailed Description

Referring to fig. 1, 2, 3, 4, part names are as follows: the cutting tool comprises a tool bar 1, a drill bit body 2, a V-shaped angle row cutting groove 3, a cutting fluid hole 4, a fluid outlet 5, a front opening transverse groove 6 and a female cone 7.

Referring to fig. 1 and 2, the self-centering flat drill bit for processing the female cone inner hole is formed by movably connecting a lengthened cutter bar 1 (200 plus 2000 mm) and a bit body 2 (40-100 mm), wherein the front end of the cutter bar 1 is provided with a front opening transverse groove 6, the bit body 2 is transversely inserted into the front opening transverse groove 6, two V-shaped angle row cutting grooves 3 (such as 45-degree V-shaped angles) are processed on the surface of the cutter bar 1 along the length direction, the two V-shaped angle row cutting grooves 3 are arranged along the circumferential surface at an interval of 180 degrees, and a cutting fluid hole 4 leading to the bit body 2 is processed in the cutter bar 1 along the length direction so as to pour cutting fluid. A cutting fluid outlet 5 for pouring cutting fluid is arranged beside the bit body 2 of the cutting fluid hole 4, and the bit body 2 and a transverse groove 6 of a front opening of the cutter bar 1 are in tight fit (insertion) instead of a fixed structure, so that the drill bit can float up and down in the drilling process to play a self-centering role (left and right alignment under the action of cutting force). The cutting chips are taken away by utilizing the water pressure of the cutting fluid hole and reach the automatic chip removal groove, so that the time wasted by repeated chip removal is saved, the labor intensity is reduced, the efficiency is greatly improved, and the economic benefit is improved.

Referring to fig. 3, the bit body 2 is a white steel square blade made of W18Cr4V material, which has good hot red hardness, and effectively solves the problem of the influence of the working environment of deep hole processing, which is not good in heat dissipation and can bear high temperature. The bit body 2 is manufactured by self-manufacturing, so that the cost is less than 100 yuan, and the cost is low.

The self-centering flat drill for machining the inner hole of the female cone is fixed on various machine tool workbenches and is suitable for drilling, deep hole drilling, hexagonal machine tools, common machine tools and the like.

The above description is only exemplary of the present invention, and the various illustrations do not limit the essence of the present invention.

Claims

1. Female awl hole processing from line-up flat drill bit of feeling relieved, it comprises extension cutter arbor (1) and two body swing joint of bit body (2) its characterized in that, cutter arbor (1) front end has preceding uncovered cross slot (6), bit body (2) violently insert in preceding uncovered cross slot (6), it cuts recess (3) to process two V-arrangement angles on cutter arbor (1) surface along length direction, two V-arrangement angles are arranged and are cut recess (3) along the circumference surface interval 180 degrees and arrange, it has cutting fluid hole (4) leading to bit body (2) to process along length direction in cutter arbor (1), cutting fluid hole (4) have liquid outlet (5) of pouring cutting fluid by bit body (2), close-fitting is in preceding uncovered cross slot (6) of bit body (2) and cutter arbor (1).

2. The self-centering spade drill bit for female taper bore machining according to claim 1, wherein the bit body (2) is a white steel square blade of W18Cr 4V.