SU1685578A1 - Method for making fixtures of transmission pulley - Google Patents

Abstract

The invention relates to the processing of metals by pressure, in particular, to methods for producing reinforcement for a V-belt pulley. The purpose of the invention is to improve the quality of finished products by increasing the reliability of adhesion of the reinforcement to the pulley during their assembly. The method includes cutting a blank, punching grooves along the edges of the blank with the formation of teeth. Simultaneously with the punching, a part of the workpiece is displaced in the deformation zone in the direction of punching. Then, the workpiece is bent to form a pulley profile and then the profile is bent into a ring. The use of the method allows to increase the service life of the transmission pulley prior to the beginning of the separation of the reinforcement. 3 il.

Description

The invention relates to the processing of metals by pressure, in particular, to methods for producing reinforcement of a V-belt pulley.

The purpose of the invention is to improve the quality of finished products by increasing the reliability of coupling the fittings to the pulley during assembly.

Figure 1 shows the workpiece after punching, General view; Fig. 2 - the same, after forming the stream profile; on fig.Z - the shape of the product after bending the workpiece into a ring.

The method includes a section of the workpiece with a width equal to the sweep of the stream profile and a length equal to the perimeter of the base of the pulley stream, punching grooves along the edges of the blank with the formation of teeth. Simultaneously with punching, a part of the workpiece is moved in the deformation zone in the direction of punching. Then, the blank is bent to form a stream profile.

pulley and subsequent profile bending in a ring.

PRI me R. In strip 1 of SCP steel of thickness h 0.6 mm, width I 52 mm and length L - 345 mm on the sides 2, symmetrically with respect to axis 3, punching grooves 4 is made with the formation of teeth 5. The groove width Ln 2 mm. the length of the groove ln is 20 mm, the punching pitch is t T2 mm, the number of the grooves is equal to 29. The width of the teeth is 5 з 10 mm, the width of the lintel is 6 hn 12 mm, the number of teeth is Z3 28. The punch is made with a punch having a total clearance 0 , 25 mm, and the matrix itself has a working edge radius of 0.3 mm, which allows moving part of the workpiece material in the direction of punching and forming metal 7 beads with a height of (0.8 - 2.0) h.

Then, the workpiece is bent in the profile 8 of the pulley at an angle az 34 °. Next, the profile is bent into a ring

with

I heard

vl 00

with a diameter of 140 mm. At the same time, on the reinforcement 10 of the transfer pulley, the sags 7 are located on the side of the rim.

The use of the method allows to increase the service life of the transmission pulley prior to the beginning of the separation of the reinforcement.

Claims (1)

The invention The method of manufacturing a transfer pulley reinforcement, comprising: cutting a workpiece with a width equal to the sweep profile of the pulley broach and a length equal to the perimeter of the pulley broach base, punching along the edges of making grooves with the formation of teeth, bending the workpiece to form a profile pulley and subsequent bending the profile into a ring, characterized in that, in order to improve the quality of the finished products by increasing the reliability of adhesion of the reinforcement to the pulley during assembly, the punching of the grooves is performed simultaneously moving part of the workpiece in the deformation zone in the direction of punching, and bending the workpiece to form a pulley is carried out in the direction opposite to the direction of punching. I Fie.2 Fig Fig.Z