SU1625568A1 - Semiautomatic thread rolling machine - Google Patents

Abstract

The invention relates to the processing of metals by pressure and can be used for rolling external threads with rollers. The purpose of the invention is to increase productivity by automating the loading and unloading of complex shapes. A semi-automatic machine consists of a bed with a fixed head and a camshaft with two cams, a movable head mounted on the guide beds, two rolling rollers mounted on the spindle and the loading-unloading mechanism. The invention relates to the processing of metals by pressure and can be used for Rolling external threads with rollers. The aim of the invention is to increase productivity by automating the loading and loading of complex shaped parts. Fig. 1 shows a kinematic diagram of a semiautomatic device, Fig. 2 shows a semiautomatic device at the time of knurling, a longitudinal section; FIG. 3 is a view A of FIG. 2; 4 is a diagram of the drive of the clipper. The thread-rolling semiautomatic device contains a bed 1 (fig.Z), a stationary head 2, a support bracket fixed on the upper plane of the stationary head, a rolling pin installed in the bracket, a suspension bracket with an emphasis, an earring with a pin, a rod, a rotating pusher, an orienting prism and a rod, a rack with cut-off and lever and double-shouldered lever placed on the bracket. When the device operates under the action of a double-arm lever, the rod moves inside the rolling pin, carries along an earring, kinematically connected with a cutter. As a result, the part located in the tray is fed into the orienting prism and fixed between the stop and the pusher. Then the rolling roller of the movable head presses the part against the fixed roller and the thread rolls. After that, the movable head is retracted from the part, and the rod with the shackle is moved to its original position. At the same time, the processed part collides in the bypass tray. The proposed semiautomatic device will increase productivity by automating the loading and unloading of parts. 4 il. a camshaft 3, a movable head 4, two knurled rollers 5 and 6 and a workload loading-unloading mechanism which contains a bracket 7 fixed on the upper platform of the fixed head, a rolling pin 8 freely turning in the bracket 7, a suspension 9 fixed on the rolling pin 8 the lower end of which is mounted a rotating stop 10, bearing on itself a spring-loaded sleeve 11, fixed in the stop by means of a pin 12 and a longitudinal groove 13 On the outer surface of the rolling pin 8, a link 14 is mounted, having the possibility of axial displacement About to eat a Yu joint venture of 00

Description

neither on the rolling pin and fixed relative to it with the help of the pin 15 and the longitudinal groove 16.

The pin 15 is also fixedly connected with the rod 17 placed inside the rolling pin 8 with the possibility of reciprocating movement. A spring 18 is placed inside the stem, resting through the insert 19 and the pin 20 on the rolling pin.

A rotating pusher 21 is mounted at the lower end of the shackle 14. To install the front position of the shackle, a stop screw 22 is used. On the shackle 14, the orienting prism 23 is also fixed to center the part

24 with respect to the stop 10 and the strap 25 in contact with the lever 26 mounted on the rack 27 (FIG. 4, details of positions 14, 21,

25 and 26 are conventionally rotated 90 °). The stand is fixed on the support 28 of the bed 1. On the axis 29 of the stand 27 a cutter 30 is mounted, which is a swinging two-shoulder fork with upper and lower shoulders. On the upper arm of the fork, a resetter 31 is mounted, pressing the last cut-off part 24 to the aligning prism 23. The slam-shutter 30 is constantly affected by a spring 32 fixed on the stand 27.

The support 28 has a base 33 for fastening the inclined tray 34. On the axis 35 of the bracket 7 a double-arm lever 36 is mounted, which at one end interacts with the rod 17, and the other through the pin 37 and the roller 38 rests on an additional cam 39 mounted on the cam shaft 3 machine. The stop 10 is retracted from the knurled roller 5 of the stationary head 2 by means of projections 40 and 41 and spring 42 up to the stop of the suspension 9 in a screw 43 mounted in plate 44, which, in turn, is fixed to the bracket 7. On the machine, also tray 45.

The workpiece 24, which is located on the support 10, is pressed to the knurling roller 5 (Fig. 3) of the fixed head 2 by the knurled rod 6 of the movable head 4.

Semiautomatic works as follows.

When the semi-automatic device is turned on, rotation from the motor (Fig. 1) is transmitted via a belt transmission to the spindle of the stationary head and through the parasitic gear to the spindle of the moving head. From the spindle of the stationary head, rotation through the chain and worm gears is transmitted to the camshaft 3, which carries circular cams, one of which causes the moving head to perform reciprocating movements, and the other additional cam 39 through reciprocating lever 36 causes it to reciprocate. translational motion stock 17.

In the initial position, the parts located on the inclined chute 34 are held by the lower shoulder of the shutter 30, which is acted upon by the lever pressed by the bar 25. Part 24 is cut off from the total flow

0 in the previous cycle, lies on the orienting prism 23. At the same time, the spring 18 (Figures 1 and 2) is compressed by the rod 17 under the action of the double-arm lever 36, and the shackle 14 is retracted to the extreme right position.

5 With the beginning of the decline on the additional cam 39 (Figs. 1 and 3), the double-shoulder lever 36 begins to rotate, as a result of which the rod 17, under the influence of the spring 18, follows the double-shouldered lever 36,

0 is an earring 14. At the same time, together with the earring, it goes forward and the bar 25 attached to it, the release lever 26, and through it the cutter 30, which, turning on the axis under the influence of the spring 32, retracts

5 down its lower shoulder, the bent end of which is in the groove of the inclined tray 34, and the upper shoulder down to the plane of the tray. As a result, the parts on the tray roll all the way into the folded

0, the upper arm of the trimmer 30, and the resetter 31 presses the trimmed part 24 to the orienting prism 23.

During the further course of the earring 14 forward, the part 24 is pushed with its central hole on the support 10 by means of the pusher 21.

At the same time, the spring-loaded sleeve 11 keeps the part 24 pressed against the mountaineer pusher 21, which ensures the constancy

0 position of the part relative to the end of the rolling rollers 5 and 6, since the shackle 14 moves to the fixed stop in the suspension 9 (adjustment of this position is carried out with the help of a screw 22).

5 While moving the shackle 14 forward, the ejector 31 slides off the shank of the part 24 onto the surface of the pusher 21. Under the influence of the disk cam of the knurling roller 6 of the moving trap

0 4 presses the part 24 against the knurling roller 5 of the stationary head 2, as a result of which a thread is rolled on it. Then the movable head 4 moves away from the fixed 2 and the suspension 9 together with the rolling pin 8 and

5, the shackle 14 rotates in the bracket 7 under the action of the spring 42 until the suspension 9 stops in the screw 43, as a result of which the machined part 24 disengages from the knurling rollers 5 and 6. The double-arm lever 36 begins to turn on axis 35 from the additional cam 39, retraction of the rod 17 to initial position.

Together with the rod 17, the shank 14 departs with the pusher 21 and the orienting prism 23. The machined part 24 first encounters the stop 10 with the spring-loaded sleeve 11 on the orienting prism 23, and then hits the ejector 31 and ends up in the bypass tray 45.

At the end of the withdrawal of the earring 14, the bar 25 presses the lever 26, which, in turn, with its lower shoulder presses the shut-off device 30, the upper arm of which rises, releasing the next part, which under its weight rolls into the orienting prism 23, and the lower shoulder secator 30 at this time, lifting up, holds the remaining parts in tray 34. Then the cycle repeats.

When adjusting the thread rolling semi-automatic machine for machining parts of other shapes and sizes, the stop 10, the spring-loaded sleeve 11, the pusher 21, the orienting prisms 23, the cutter 30 and the tray 34 are replaced in accordance with the geometric dimensions of the workpiece.

The proposed semiautomatic device will allow increasing productivity by automating the loading and unloading of parts of complex shape.

Claims (1)

Invention Formula A thread-rolling semiautomatic device containing a frame with movable and stationary heads located on it with knurling rollers, a camshaft and a loading / unloading mechanism, having a bracket with a rolling pin and fixed on it with a support with a stop and a link with a pin, a rod and a rotating pusher; on a rolling pin with the possibility of axial movement, characterized in that, in order to increase 0 performance by automating the loading of parts, it is equipped with a cutter with a lever, a bar, an extra cam, a double-sided snag, an orienting prism and a stand placed in the loading mechanism — an orientation pin and a pivot, the rod is placed inside the rolling pin with the possibility of returning - the translational movement and is spring-loaded in the axial direction, and the double-arm lever is located on the bracket with the ability to interact with the rod and mounted on the camshaft with an effective cam, with this orientation, the prism and the strap are rigidly connected to the earring, the stand is placed on the frame, the lever is mounted on the stand with the ability to interact with the strap and the cutter, and the latter is made in the form of a double shoulder 0 forks with a resetter, with the plug located on the rack with the possibility of swing, and the resetter mounted on the shoulder of the plug. chz 8999Z91 five I ITS 37 Fig.b