RU1637145C - Drilling device - Google Patents

Description

The invention relates to machine tools, in particular to a device for drilling holes, and can be used in repair work

The aim of the invention is to improve the centering accuracy of

On Fig shows the proposed device; figure 2 is a view of figure 1; on fig 3 - section BB in fig o 2; on fig L - the device is in operation; in Fig.5 - section BB in Fig.4; in Fig.6 is a section GG in Fig.4.

The device comprises a housing 1 with a base plane a, a floating ring 2 connected to the housing 1 by elastic elements 3, and a sleeve 4 mounted on the floating ring 2. The floating ring 2 is provided with rotating segments 5, which on the axis of rotation 6 lie in the plane, perpendicular to the axis of the sleeve 4, mounted on the floating ring 2 and spring loaded relative to it by an elastic element 7 The sleeve 4 has slots 8 for segments 5, and the dimensions H from the axes 6 of rotation of the segments 5 to their ends Ј are greater than the distance h from the axes 6 of the swing segments 5 to base plo speed of the housing 1. On the floating ring 2, brackets 9 are mounted to accommodate the pivot axes 6.

It is also possible to place the rotation axes 6 directly in the body of the floating ring 2 „

i

The outer diameter DJ of the protruding portion of the rotating segments 5 is equal to the diameter D of the hole 10, The diameter dt of the inner surfaces of the rotating segments 5 is equal to the diameter d of the tool and the inner diameter of the sleeve k. The drive 11 of the tool 12 is installed on the sleeve C, the tool 12 is located in the sleeve

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3. 16371 5 operates as follows

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The device approaches the controlled hole 10 by means of delivery (not shown in the drawing)

Starting position (see "fig" 3). The rotating segments 5 under the action of the elastic elements 7 occupy a position in which their ends Ј do not protrude beyond the base plane a of the housing 1, are led away to the axis of the bushing b. The tool 12 is located in the upper part of the sleeve Ts. The drive 12 for moving the tool 12 is turned on. The tool 12 moves in the sleeve k and the edge of the end, it presses on the inner surfaces of the rotating segments 5 °. With further operation of the drive 11 and moving the tool 12, which interacts with the swinging segments 5, they rotate around the axes 6, 3 fastened in the brackets 9, and the ends 8 of the swivel segments 5, diverging from the axis of the sleeve k and contacting their outer surfaces with a controlled bore 10, center the sleeve with the tool 12 relative to the hole 10 Segments 5 take a position in which extend along the sleeve k and together with it form a single guide surface for the tool 12 "After completing the control, the drive 11 for moving the tool 12 is switched to the Other side, and the tool is displayed in the upper zone of the sleeve 4"

In this case, under the action of elastic elements 7, segments 5 occupy the initial position

5

0

5

0

5

40

The device provides reliable centering of the tool 12 relative to the hole 10 without contact of the tool 12 with the hole 10 by tightly mechanically linking the floating ring 2 and the sleeve (bearing HHCJ tool 12} with the hole 10 through segments 5. 1

The operation of the device can be controlled

Claims (1)

remotely. When machining stepped holes, the device works similarly. In this case, the centering of the sleeve b (carrying the tool 12) is carried out along the first step (larger diameter) of the hole, and the tool processes the following steps (smaller diameter; # verst “Formula of the invention A drilling device comprising a housing with a supporting surface, a floating ring, coupled to the housing by elastic elements, and a conductor sleeve mounted in the floating ring, characterized in that, in order to improve centering accuracy, the device is provided with rotatable axes mounted on the floating axes rings with spring-loaded segments, and slots are made in the conductor sleeve to accommodate the segments, with the axis of the segments perpendicular to the axis of the conductor sleeve, and the distance from there are more axles to the ends of the segments than the distance from the axes to the supporting surface of the housing V0fiq 1 EPF S jtZЈ9i i 9 and YU Fig.Z 10 eleven FieL / 2 Editor S „Titova Compiled by Black Techred MoMorgental FIG. 6 Proofreader M. Sharoshi