SU1489979A1 - Device for center-popping holes - Google Patents

Abstract

The invention relates to a marking tool. The purpose of the invention is to improve the accuracy of markup. The device for centering the center holes is mounted on the part 11 so that its end enters the tapered nozzle 3. In this case, the part 11 is pre-centered with respect to the center punch 5. Then the sleeve 12 is rotated with respect to the nozzle 3, while the lateral sides of the radial grooves pressure on the ends of the two shoulders levers 9 and rotate them around the axes 8. In the process of turning the levers 9, their free ends cover the outer cylindrical surface 10 of the part 11 and finally center it relative to the body 1. Then strike a blow the percussion mechanism 4 and the center punch center 5 make a mark on the workpiece end face 11. To release the part 11 is pressed to one end of a lever 19 which pivots about the axis and the other end presses the roller 16 of suzhivayuscheys of the groove 14. Thereafter, the clip 12 is rotated to the original position. 2 Il.

Description

Schag.1

11 relative to the center punch 5, Then rotate the sleeve 12 relative to the pipe 3, while the lateral sides of the radial grooves press on the ends of the double-arm levers 9 and rotate them around the axes 8. In the process of turning the levers 9, their free ends cover the outer cylindrical surface 10 of the part 11 and finally center it relative to the body

1. Then strike the impact mechanism 4 and the center punch 5 mark the center on the end face of the part 11. To release part 11, press one end of the lever 19, which rotates around the axis and another end squeezes the roller 16 out of the tapering part of the groove 14, After that, the holder 12 is rotated to its original position, 2 Il.

The invention relates to a marking tool and can be used in various areas of the marking of centers in axisymmetric parts.

The purpose of the invention is to improve the accuracy of marking due to the additional base of the device on the outer cylindrical surface of the part.

Fig, 1 shows a general view. devices, longitudinal section; FIG. 2 is a sectional view of FIG. one,

The device for centering the center holes includes a housing 1 with a central hole 2 and a tapered nozzle 3 coaxial with it at the end, an impact mechanism 4 with a center punch 5 at the tip facing the tapered nozzle 3, placed in the hole 2 of the housing 1, -) 1Y of the base are made evenly spaced around the circumference of the radial grooves 6 and the holes intersecting them 7, the axes of which are parallel to the axis of the nozzle 3, In the radial grooves 6, two shoulders p are mounted around the axes 8 placed in the holes 7 chugs 9 for interaction with one end of the outer cylindrical surface 10 of part 11. On the basis of nozzle 3, the sleeve 12 is rotatably mounted with uniform radial grooves 13 through each of the latter, the corresponding free end of the two shoulders 9 is placed in each of them to interact with the side surfaces of the groove 13, on the outer surface of the pipe 3, a tangential tapering groove 14 is complete. In the groove 14 of the pipe 3, a spring is placed in the direction of the narrow groove 14 by a spring 15 roller 16, P pipe 3 ow0

five

0

from 0 5 d,

locally with the roller 16 and the yoke 12, forms a freewheel, In the yoke 1 2, an additional radial groove 17 is made. For activating the freewheel coupling in the tangential groove 14, it is possible to turn v-g. a circle axis 18, fixed in the pipe 3, is placed double-shouldered curved lever 19, the end of the latter passes through the groove 17 of the holder 12,

The device for centering the center parts works as follows.

The housing 1 is mounted on the centered part 1T so that its end comes into contact with the inner surface of the tapered nozzle 3. Then the sleeve 12 is turned relative to the housing 1, while the holder 12 side surfaces of the radial grooves 6 draws the free ends of the double-shouldered arms 9, As a result, the levers 9 rotate around the axis 8, and their ends interact with the outer cylindrical surface 10 of the part 11, reliably centering the latter relative to the axis of the nozzle 3. In this case, the freewheel clutch prevents This rotation of the sleeve 12 relative to the housing 1, and the part 11 is clamped by the ends of the levers 9.

After that, the impact mechanism 4 is struck, while the center punch 5 marks the end face of the part 11. After that, the end of the pin 19, which is turned around the axis 18, is pressed, the end 16 is squeezed out by the freewheel 16 from the tangential groove 14. and thereby wedging the yoke 12 relative to the nozzle 3. Thereafter, the yoke 12 is rotated to its original position, while the levers 9 rotate around the axes 8 and release

Part 11. The device is then removed from the marked part 11 and transferred to another part to be marked. The cycle is then repeated in the above-described sequence.

Claims (1)

Invention Formula A device for centering centering holes, comprising a housing with a central hole and a conical nozzle coaxial with it at the end, a percussion mechanism placed in the hole With a center punch on the end facing the cone nozzle, so that, in order to improve the marking accuracy at 15 Editor I. Segl Nick Compiled by Y.Sergeev Tehred L. Serdyukov. Corrector I. The muscular nozzle from the base side is made through radial grooves uniformly spaced around the circumference, and the device is equipped with a clip installed with the possibility of rotation on the base of the nozzle with radial grooves and two shoulders evenly spaced circumferentially levers, each of which is placed in the corresponding through radial groove of the cone nozzle with the possibility of rotation in the plane, perpendicular to the axis of the nozzle, one end The lever is located in the through radial itasy of the cage, and the other is designed to interact with the cylindrical surface of the part. J f Phage 2