SU1399009A1 - Arrangement for drilling - Google Patents

Description

(21) 4) 22090 / 25-08

(22) 07/09/86

(46) 05/30/88. Bul Number 20

(72) LoE. Pool tkn, S „D.Pirogov,

E.I.Ermakov and L.B.Nepaharev

(53) 621.952-589.75 (088.8)

(56) USSR Copyright Certificate No. 496102, cl. B 23 B 39/04, 1974.

(54) DEVICE FOR DRILLING

(57) The invention relates to metal cutting. The aim of the invention is to provide automation when drilling a certain number of holes. Pinol I with toothed rack 2 sopr wife through

a gear gear 3 with a gear sector 4 of a spring-loaded two-arm lever 5, equipped with a roller 6, interacting with the main cam 7. On the same axis with the cam 7, there is a worm gear 8, conjugated with a worm 9, and a worm to 1I, interacting with a worm wheel 12. On one axle with wheel 12 there is an additional cam 13 interacting with roller 1A placed on lever 5 interacting with key switch 15. The gear ratio of the worm gear is equal to the number of reciprocating shifts (quinols, 1 or more .

cl

with so with so

with

The invention relates to metal cutting.

The purpose of the invention is to provide automation when drilling a certain number of holes.

The drawing shows a device for drilling, a general view.

The device comprises a quill with a gear rack 2, coupled through the gear gear 3 with the gear sector A of a spring-loaded two-arm lever 5, equipped with a roller 6, which runs around the main radial cam 7.

A worm wheel 8 is mounted on the same axis with a cam 7, coupled with a worm 9 driven by electric drive 10, and a worm to 11, acting together with a worm wheel 12.

On the same axis with the wheel 12 there is an additional face cam 13 in contact with the additional roller 14 of the double-arm lever 5, and through the latter with the limit switch 15. In general, the switch 15 can directly mate with the cam 13 "The gear ratio provides the specified rotation speeds Cams 7 and 13, which are related as follows:

V,

And -V,

Where

n the speed of rotation of the main cam;

rotational speed of the additional cam; The number of holes. The device works as follows.

The actuator 10 causes the worm to rotate to 9, which through the wheel 8 and the screwed pair starts to rotate the cams 7 and 13. At the same time, the cam 7 through the roller 6 acts on a spring-loaded two-arm lever 5, which

gear sector 4 drives wheel 3, which moves tppule 1 through gear rack 2. Thus, the cam mechanism provides the oscillatory motion of the two shoulders of the lever 5 and thereby the reciprocating movement of the pinoli 1,

The number of reciprocating movements of the quill corresponds to the number of drilled holes “When the last hole is drilled, the cam 13 comes into contact with the roller 1A. At this moment, the lever 5 is pressed, which acts on the limit switch 15, which switches off the electric motor 10. The gear ratio of the worm pair 11, 12 is chosen equal to the number specified; reciprocating movements of quill 1, i.e. the number of holes to be machined.

Claims (1)

Invention Formula A drilling device, comprising a quill feed mechanism, designed as kinematically associated with the last spring loaded lever, carrying roller, mounted to interact with a cam associated with a drive, characterized in that, in order to increase the level of automation, the device equipped with a drilling cycle control mechanism, made in the form of an additional cam, installed with the possibility of interaction with the latter of an additional roller placed on the lever, a limit switch, designed to interact with an additional cam, and a worm pair, the wheel of which is connected to an additional cam, and the worm to a main cam.