SU1652017A1 - Spinning machine - Google Patents

Abstract

The invention relates to the processing of metals by pressure, and specifically to equipment for stamping by rolling. The purpose of the invention is to expand technological capabilities and increase productivity. The machine contains a frame 1 on which a slide 5 is mounted in guides 4 with axial movement and an upward movement of the upper tool 3 is mounted. the lower tool 11, equipped with a pusher 18 with a drive and an axial movement mechanism of the slide 5 in the form of a hydraulic cylinder with a rod 6 In the lower tool a central safety device 20 is installed which is capable of reciprocating from independent

Description

The invention relates to the processing of metals by pressure, in particular to devices for stamping by rolling.

The purpose of the invention is the expansion of technological capabilities and increased productivity,

Figure 1 shows a rolling machine for stamping, a longitudinal section; figure 2 is a sequence diagram of the operation of the machine in automatic mode; FIG. 3 shows the relative position of the upper and lower tools at the moment of loading the blank, the position of F on the sequence diagram; figure 4 - the relative position of the upper and lower tools in the period of the beginning of stamping, position And on the sequence diagram; Fig. 5 shows the relative position of the upper and lower tools during the period of completion of the stamping, position B on the cyclogram; Fig. 6 shows the relative position of the upper and lower tools at the moment of removal of the stamped part, position B on the cyclogram.

The rolling machine contains a bed 1, in the upper part which is mounted the rolling motion mechanism of the upper tool 2 mounted on the tool holder 3. In the middle part of the bed are guides 4, with which the slide 5 interacts and to which the axial movement mechanism hydraulic cylinder 6 is attached installed in the lower part of the frame 1. On the rod 6, the piston 7 and the cover 8 are fixed, closing the cavity of the rod 6 from below. A cover 9 of an axial movement mechanism is also attached to the frame 1. On the slider 5, a plate 10c is fixed on the bottom tool fixed thereto. To the lower part of the plate 10, the ejector cylinder 13 and the catch cylinder 14 are fixed by means of pins 12. The catch cylinder 14 is the cover of the ejector cylinder 13 on the open side of the housing the catcher 14 is closed by a lid 15. In the case of the hydraulic cylinder of the ejector 13 a piston 16 is placed with a rod 17 to which the ejector 18 is attached,

the rod 17 and the ejector 18 are made with axial bores through which the rod 19 passes, on which the safety device 20 is installed. In the lower part of the rod 19 the piston 21 of the hydraulic cylinder of the catcher 20 is installed. The following main hydraulic lines - the main 22 into the straight cavity axial displacement cylinders and line 23

in the opposite; highways 24 and 25 - to the forward and reverse cavity of the ejector cylinder; 26 and 27 - in the forward and reverse cavities of the hydraulic cylinder of the catcher. The top tool 2 is tapered

hole 28. On fig.Z and 4 shows the original ring billet 29 and the boot device 30; Figures 5 and 6 show a stamped ring part 31 and a discharge device 32.

Rounding Punching Machine

in automatic mode works as follows

The initial state is the lowest position of the slider 4 with the plate 10 and the lower tool 11 and the oscillatory movement of the upper tool 2 together with the tool holder 3 and the lowest position of the catcher 20 and the lowest position of the ejector 18. At this moment the loading device 30 feeds into the die space of the machine the initial annular billet 29 (see position G in FIGS. 2 and 3). After that, fluid is supplied through line 26 into the straight cavity of the hydraulic cylinder of the actuator of the catcher 20 and under its action through the piston 21 and the rod 19 the catcher 20 extends, the passage through the inner bore

the blank 29, beyond its upper end, the loading device 30 releases the blank 29, which is already mounted on the catcher 20, and is led out of the die space of the machine. In the direct cavity

the cylinder of the axial movement mechanism through the line 22 is supplied with high pressure fluid and under its action through the piston 7, the cover 8 and the rod 6, the axial movement of the slide 5 along the

4 guides 4 along with slider 5 and the plate 10 moves with the lower tool 11, in which annular blank 29 is mounted on the catcher 20. Since the catcher 20 extends beyond the upper end of the blank 29, the contact of the upper tool 2 will initially occur the safety device 20, and the safety device 20 will pass into the conical opening 28, and the spherical surfaces of the bottom of the opening 28 and the end of the safety device 20 will coincide. Similar, but less reliable, contact occurs when the spherical surface of the strips contacts A catcher 20 with a spherical cavity formed on a working surface (not shown) of the upper tool 2, wherein the radius of the spherical surface is equal to the radius of the catcher 20. Contact of the upper tool 2 with the catcher 20 reduces the impact on the catcher 20 of radial forces arising during punching rolling in and also preventing radial displacements of the catcher 20. After contact of the catcher 20 and the upper tool 2, under the action of the latter, the catcher 20 begins to sink and the fluid is expelled from the cylinder cavity water catcher 20 through line 26, which creates a back pressure to create a reliable contact between the upper tool 2 and the safety gear 20. Then comes the contact of the tool 2 with the workpiece 29 (see position a in figure 2 and 4). After this, a forging step occurs by rolling, during which the catcher 20 is depressed under the action of the upper tool 2. Upon completion of the forging operation, the upper tool 2 is rolled by the upper tool 2 (see position B in FIGS. 2 and 5) and fluid will flow through line 23 reverse cavity of the working cylinder of the axial movement mechanism — reverse movement of the slide 5 to the initial position will begin. Through the lines 24 and 27, the liquid flows into the forward cavity of the ejector 18 and the reverse cavity hydrocyline the catcher 20, so that the catcher 20 is drowned to the lowest position, and the pusher 18 rises and pushes the stamped ring part 31 out of the bottom tool 11 (see position B in figure 2 and b). At this moment unloading The device 32 captures the part 31 and is removed with it from the zone of the die space. After that, all the elements of the machine are reset to their original position. At this, the technological cycle ends and the next one begins.

The proposed machine can handle both disk (solid) and ring parts. Moreover, when the machine is equipped with a ring catcher

procurement simplifies process automation. It also eliminates the receipt of defective parts due to inaccurate placement of the part in the lower tool, as the safety device fixes the ring

0, the workpiece is from radial displacements both in the initial period and during stamping by rolling, while fixing the catcher in the upper tool improves the accuracy of the parts being stamped. Having a catcher with

5, an independent drive allows additional technological operations to be performed during the technological cycle, for example, piercing a hole in a solid part, cutting, cavity molding, etc.

0

Claims (4)

1. A rolling machine for punching, containing a slider mounted with the possibility of axial movement in the guide beds, connected with a power hydraulic cylinder, an upper tool mounted in the frame with a rolling movement thereof, and 0, the lower tool and ejector driven by a piston hydraulic cylinder, also fixed on the slider, are characterized in that it is equipped with a central catcher placed in the lower tool with a drive of its reciprocating movement, while the ejector is located in the lower tool made with an axial bore for catchers. 2. The machine according to claim 1, characterized in that, in order to reduce the dimensions, the power cylinder is made with a hollow rod, and the catcher drive is mounted in 5 cavity stem power cylinder. 3. The machine according to claims 1 and 2, characterized in that, in order to reduce dimensions, the catcher drive is made in the form of a hydraulic cylinder, the body of which is coaxially docked Q with the ejector cylinder housing and connected to the last studs, with this, the ejector cylinder piston is made with a through axial bore for the actuator hydraulic cylinder rod n catcher. 4. The machine according to claim 1, characterized in that, in order to improve the quality of the parts to be stamped and the reliability of the machine, a spherical recess with a center coinciding with the center of tangencies of the upper tool and with a diameter equal to the catcher is made at the end of the upper tool, face surface the catcher is made spherical with the diameter of the sphere also equal to the diameter of the catcher. Fie.2 Fig.Z FIG L FIG. b