SU1225719A1 - Method of manufacturing cutting links for saw chains of angular shape - Google Patents

Description

I

The invention relates to the processing of metals by pressure and can be used for the manufacture of cutting links of saw chains for the woodworking industry.

The aim of the invention is to reduce the cost of the resulting: products by rational use of the material of the workpiece with a wide tolerance band in thickness and improving the quality of products by reducing the stress concentration during bending.

The method of manufacturing cutting chains of saw chains implies both the operational carrying out of all gears on a piece blank, as well as the fabrication of transitions in one multi-position die with feeding the tape from position to position.

Fig, 1 shows a pre-flexible workpiece; Fig. 2 shows the final bending of the blank with the formation of a tooth; in fig. 3 - tooth height calibration with side crimping; in fig. 4 is a view A of FIG. 3; in fig. 5 - gauge: ka tooth thickness.

The workpiece 1 is pre-bent in the matrix 2 using the punch 3

23719zltsm finishes: 1;; -sh bend with a punch 4 ,, pre; Holding it firmly between the MaTpiiiic H 5 n npvn-KHMOM 6 and a wedge-shaped tooth 7 is formed. 5After this (cali cal); comfort the tooth 7 in height

from 1; bzhims) m of the lateral sides with the help of pou: -1CC 1l 8, fixing the workpiece 3 9 with the help of the clamp 10. This is done by predicting the filling of the corner part

11 tooth.

And, the tip calibrates the tooth in thickness, with the final filling of the corner portion 1 1 by displacing the layer of material by. the outer surface of the tooth in the direction of its angular part. The operation is carried out using a punch.

12c wedge part, for- 20 fixing the workpiece between prildam

13 and the matrix 14.

In comparison with the known, the proposed method of sokrafit energy 25 and labor loads, and the use of saw chains with cutting links with the intersection of the side and top surfaces along the edge increases the service life by 1–5 times.

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Compiled by A. Guz. Editor I. Nikolaichuk Tehred L. Oleinik

Order 2023/12

Circulation 1001

VNIshta State Committee of the USSR

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, st. Design, D

Fchg., 5

Proofreader T. Kolb

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Claims (2)

1. METHOD FOR MANUFACTURE OF CUTTING UNITS OF CUTTING CHAINS OF THE CORNER PROFILE, including cutting a flat workpiece, punching holes, preliminary and final bending of the tooth and subsequent forming of the cutting edge with preliminary and final filling of the corner part and with the tooth being calibrated to different thicknesses that, in order to reduce the cost of the products obtained due to the rational use of the workpiece material with a wide tolerance on thickness and improve the quality of products by reducing the concentration stress during bending, when forming the cutting edge, the tooth is first calibrated by height with preliminary filling of the corner of the tooth, and then by thickness with the final filling of the corner of the tooth, carried out by shifting the material layer on the outer surface of the tooth in the direction of its angular part. I 2. The method of pop. 1, because of the fact that when calibrating the tooth in height, additional efforts are made to the lateral ends of the tooth, the components of which are directed towards the angular part of the tooth. 12