SU1398999A2 - Boring head - Google Patents

Abstract

The invention relates to metal cutting and can be used in the boring of deep, precise holes. The aim of the invention is to increase productivity by processing by dividing the feed rate. The boring head contains a body and a floating plate 2, installed in the groove of the body, as well as the main 4 and additional 7 cutting elements, the supporting 5 and guides 8.9 elements. In the process of boring, the presence of an additional cutting element 7, installed diametrically opposite to the main cutting element 4, allows high-throughput processing by dividing the feed. In the process, continuous wear compensation of the cutting elements 4.7 is ensured due to the relative movement of the housing 1 and the S plate of the mounting plate 2 when changing the diameter of the hole to be machined due to the wear of the cutting elements 4 and 7. 7 Il. (L

Description

m

flash

 : The invention relates to metal cutting, can be used; it is intended for boring; deep precise holes and is complementary. ny to auth. No. J0934JO. i The purpose of the invention is an increase in productivity due to processing by dividing innings,

/ Fig. 1 shows the proposed construction of a boring head, a general view; figure 2 is the same, side view; FIG. 3 is the same, top view, FIG. 4, section A-A in FIG. J; figure 5 - section on fig.Z; on. Fig, 6 - section bb In Fig .; FIG. 7 - boring head in the process of opening, J

The boring head contains a cylindrical body and a floating body; plate 2, made in the form of a segment. Floatline 2 installed in

. The slot 3 of the housing 1 boring head.

i i,

Floating plate. 2 is provided with a main cutting 4., a supporting 5 and another 6 Guide elements. The body of the boring head I is provided with an additional mode 7 and two guides; 8 and 9 elements

:; In order to ensure the securing, fastening of the elements 4,5,7 and 9 in the expanding head, the floating plate 2 is connected to the housing J by means of a spring screw 1J, and the cutting elements are the main 4 and the additional 7 are installed with the possibility of contact sort with guide 9 and support 5 elements. Clamping force

elements 4 and-7 to elements 9 and 5,

The spring through the spring 11 is such that it prevents the opening of the joints between the indicated elements 4 and 7 and 5 and 9 during processing, and at the same time allows the iTe to move the floating plate 2 relative to the housing J when the hole diameter changes wear of the cutting elements 4 and 7.

In order to increase the longitudinal stability of the floating plate 2, it is connected to the housing J by means of a pin 12 with the possibility of rotating the plates in the contact plane of the elements 4.7 and 5.9.

Ddn of setting and sub-adjustment of the cutting elements 4.7 in the guide plate 2 and the housing 1 are set wedge 13

with

five

0

50

five

0

five

0

five

and 14 and their associated adjustment screws J 5 and 16,

Internal cavities 17 and 18 are made to supply the cutting fluid to the cutting zone in housing I. through which the cutting fluid enters the annular gap formed by the outer surface of the boring head and the walls of the hole being machined, and along it into the cutting zone. The pulp is removed from the cutting zone forward along the hole being machined,

In the process of boring, the guide 8 and the support 5 elements perceive the tangential and radial components of the cutting force of the main cutting element 4 respectively, and the guide 9 and the elastic guide 6 elements perceive the radial and tangent components of the cutting force of the additional cutting element 7, respectively The resilient guide-1DI element 6 ensures that the guide elements 8 and 9 are pressed against the surface of the hole to be machined during the process, thus achieving a certainty of base full

heads, and therefore, the correction of the axis of the machined hole. : The presence of an additional cutting element 7, which is diametrically opposed to the main one 4, makes it possible to produce a highly productive division method: feed. At the same time, in the course of processing, the wear of the cutting element 4 and 7 is continuously compensated for by the relative movement of the housing J and the floating plate 2 when the diameter of the hole being processed is changed due to the wear of the cutting elements 4 and 7.

. The wear of the cutting elements 4 and 7 is compensated by moving the floating plate 2 and moving the non-rigid in the radial direction (1 / d 10, where 1 is the length of the turn, d is the diameter of the bore: hole) of the body 1 in the region direction of yupda elements. Moreover, the floating plate and the body move one relative to the other in diametrically opposite directions.

I

With each of the cutting elements 4 and 7. The diameter of the bore hole decreases by an amount

u, whereup is the wear of the least worn cutting element, and the supporting element 5 moves the floating plate with the cutting element 4 on the lead

n1398999

The conicity of the bore holes of the proposed boring head is equal to

rank

LR

and guiding element 9

moves body with cutting element 2

Volume 7 also by

Due to the presence of axial displacement between the guides 8 and 9, the bearing 5, the elastic 6 elements and the cutting elements 4 and 7, the wear and tear of the cutting elements 4 and 7

Iro + IRA + In + Io ud 2G.

where ad is the change in diameter, µm.

. And -, Ird, And, And „- respectively, the amount of wear of the main 4

for less wearable ones

Lr cutting element by value ---.

15

and an additional 7 cutting elements, a guide 9 and a supporting 5 elements, microns, The wear values of the cutting elements 4 and 7 in the course of processing rejected

Claims (1)

These standards are periodically aligned, so the Formula of the invention as the wear rate of the less worn out element on the larger diameter of the machined hole increases, and the intensity of the more worn element on the smaller D 25 diameter, the head is equipped with an additional machined hole decreases the cutting element this with. FIG. 7 shows the boring head and additional cutting dexterous during the processing of the aperture, where LH is the amount of non-uniformity of wear of the cutting elements 4.7; the value determined by the difference between the size of the bore diameter and the amount of wear of the least worn cutting element. Boring head auth.St. No. 1093410, in contrast to the fact that, in order to increase the production, the elements are installed diametrically and oppositely and are based respectively on the floating plate and in the housing with the possibility of interaction on the rear bearing surface with the guide and the supporting element, respectively. J. J., - 4- -J 3 with l I A B A S Figure 1 Iro + IRA + In + Io ud 2G. where ad is the change in diameter, µm. . And -, Ird, And, And „- respectively, the amount of wear of the main 4 15 Claims of the invention of Durability, the head is equipped with an additional cutting element, with the main and additional cutting Boring head auth.St. No. 1093410, in contrast to the fact that, in order to increase production, the Duration of the Claim is 25, the head is provided with an additional cutting element, with the main and additional cutting edges the elements are installed diametrically and oppositely and are based respectively on the floating plate and in the housing with the possibility of interaction on the rear support surface with the guide and support element, respectively. Fig.2 . 3 / 76 figl phi 6 phage. 7