SU1458107A1

SU1458107A1 - Half-round drill for deep drilling

Info

Publication number: SU1458107A1
Application number: SU874280389A
Authority: SU
Inventors: Лев Александрович Фомин
Original assignee: Предприятие П/Я А-3881
Priority date: 1987-07-10
Filing date: 1987-07-10
Publication date: 1989-02-15

Abstract

Изобретение относитс к области обработки металлов резанием и может быть использовано дл получени глубоких отверстий в сплошном материале. Целью изобретени вл етс повышение точности за счет устранени износа рабочей поверхности сверла посредством подачи чистой смазочно-охлаждающей жидкости (СОЖ) к поверхности направл ющих пластин. В пазах 5, 6 головки расположены съемные направл ющие пластины 7, 8 и установленные под ними сменные прокладки 9, 10. Направл ющие пластины 7, 8 и прокладки 9, 10 прижаты к пазам 5, 6 головки дугообразной планкой 11 с помощью винтов. На теле головки имеетс лыска 14. Между ней и планкой 11 образована полость, котора соединена с внутренним каналом стебл и служит дл подвода СОЖ в зону резани . На продольных торцах дугообразной планки 11 и на продольных гран х паза 6 выполнены поперечные канавки дл выхода СОЖ к рабочим поверхност м направл ющих пластин 7, 8. 2 з, п. ф-лы, 4 ил. S (ЛThe invention relates to the field of metal cutting and can be used to produce deep holes in solid material. The aim of the invention is to improve accuracy by eliminating wear on the working surface of the drill by supplying clean coolant (coolant) to the surface of the guide plates. In the slots 5, 6 of the heads, there are removable guide plates 7, 8 and interchangeable gaskets 9, 10 installed under them. The guide plates 7, 8 and gaskets 9, 10 are pressed against the slots 5, 6 of the head by an arcuate bar 11 with screws. On the body of the head there is a lip 14. Between it and the bar 11 there is a cavity, which is connected to the inner channel of the stem and serves to supply coolant to the cutting zone. On the longitudinal ends of the arcuate bar 11 and on the longitudinal edges of the groove 6, transverse grooves are made to exit the coolant to the working surfaces of the guide plates 7, 8. 2, 3, 4, 4, silt. S (l

Description

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Claims

Claim

1. A single-edged drill for deep drilling, containing a stem with an internal channel for supplying a cutting fluid and a head connected to the stem with a channel for supplying a cutting fluid and carbide cutting and guide plates that are located in grooves made in the head, characterized in that, in order to improve accuracy, the drill is equipped with an arcuate strip with grooves on its longitudinal ends, mounted on the head between the guide plates, and on the head is made flat, the image yuschaya cavity between the head and a rod for connecting with the internal passage of the stem, and a cavity connected with said radial channels are formed between the guide plates and the longitudinal ends of the strap, wherein the guide plates are mounted on a drill introduced into strips.

2. Drill on π. 1, characterized in that the arcuate strip and / or gaskets are made elastic.

3. Drill on PP. 1 and 2, characterized in that in the walls of at least one groove of the head grooves are made for supplying a cutting fluid.

figure 1

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