RU2600302C1 - Device for rolling cylindrical articles with flat tools - Google Patents

Abstract

FIELD: technological processes.

SUBSTANCE: invention relates to metal processing by surface plastic deformation. Device comprises a slider in a bed with a movable deforming tool, a fixed deforming tool under it and a height adjustment wedge mechanism of the fixed deforming tool with upper and lower wedges. On the slider there is a stiff support and an articulated spring-loaded movable plank. On the side of the fixed deforming tool there is a blank feeder. Fixed deforming tool is made with ends of a comb-like shape. On the upper wedge of the wedge mechanism there is a spring-loaded fence to interact with the said movable plank.

EFFECT: as the result performances of the device are enhanced.

1 cl, 4 dwg

Description

The invention relates to the processing of metals by surface plastic deformation and is intended for rolling in flat tools of products such as cylindrical fingers and bushings.

A flat-rolling device is known comprising a bed with a slider, a movable deforming tool mounted on a slider, and a stationary deforming tool mounted on a bed, a workpiece feeding mechanism having a cassette, a tray with a channel and a spring-loaded feeder having parallel mounted and interconnected gate with cut and a cutter [USSR author's certificate No. 462646, IPC, V21H 9/02, published on 03/05/1975].

Signs of an analogue that coincide with the essential features of the claimed device are a bed, a slider with a movable deforming tool, a workpiece feeding mechanism, a closed height adjustment mechanism between tools, a pusher, a workpiece storage bin and a box for placing finished products.

In the known device between the hopper and the feeder on the frame mounted tray-store, and on the slider in the lower position relative to the stationary tool mounted tool. The feeder is located above the movable tool, but does not enter the area between the tools. For this device, the transition from processing one type of product to processing another is possible when replacing a significant number of interchangeable parts in the feed nodes, as well as during a series of adjustments. This circumstance increases the labor costs of commissioning. In addition, the workpiece feed mechanism consists of a complex system of levers and a gate, this reduces the reliability of the device, complicates its synchronous operation, repair and maintenance.

A device for the cross-wedge rolling of products of variable cross section, comprising movable and fixed wedge tools, a heating element and a control system for the rolling process, is equipped with a loading device for pre-chopped billets, a swinging roller table for piece feeding the billets into the rolling zone and a pusher mounted on the rear movable wedge tool, while the heating element is made in the form of an inductor of high frequency currents [Copyright certificate 2179904, IPC - V21N 1/18, published 27.02.2012].

Signs of an analogue that coincide with the essential features of the claimed device are a bed, a slider with a movable deforming tool, a workpiece feeding mechanism, a closed height adjustment mechanism between tools, a pusher, a workpiece storage bin and a box for placing finished products. In the process of operation of the device there is an idle stroke of the tool, which significantly reduces the processing performance. Surface plastic deformation of the workpieces occurs in the cold state of the workpiece, therefore, no heating element is needed.

Also known is a flat-rolling device containing a bed with a stationary deforming tool, a slider with a movable deforming tool located above the stationary deforming tool, as well as a feed mechanism with a cassette, tray and feeder having a parallel mounted and interconnected gate with a slot and a cutter [USSR Author's Certificate No. 764812 , IPC, B21H 9/02, published 09/23/1980]. The specified technical solution, which is the closest analogue, can be taken as a prototype of a device for rolling cylindrical products with flat tools.

Signs of an analogue that coincide with the essential features of the claimed device are a bed with a stationary deforming tool, a slider with a movable deforming tool, a workpiece feeding mechanism, a pusher, stops, a bunker for workpieces and a box for placing finished products.

The disadvantage of this design is that it is impossible to adjust the closed height between the tools, which means that there is no ability to readjust to the processing of various standard-sized parts, which reduces the technological capabilities of the device. In addition, the presence of deep grooves in the slider complicates its manufacture. The presence of idling tool reduces the processing performance.

The technical result of the invention is improving the reliability of the device and expanding its technological capabilities.

The technical result is achieved by the fact that the device for rolling cylindrical products with flat tools, containing a slider installed in the frame with a movable deforming tool mounted on it, a stationary deforming tool located under it, a workpiece feeding mechanism equipped with a pusher, stops, a workpiece hopper and a tray, according to the invention further comprises a side-mounted stationary deforming tool, a workpiece feed mechanism provided with a pusher, stops, a bunker for workpieces and a tray, a hard stop mounted on a slider, a wedge mechanism for adjusting the height of the stationary deforming tool, a spring-loaded movable bar pivotally mounted on the slider next to the hard stop, while the stationary deforming tool is made with ends of a comb shape, and a spring-loaded comb is installed on the upper wedge of the mechanism for adjusting the height of the stationary deforming tool with the possibility of interaction with the movable bar using rollers, are worn x on the pins.

An additional introduction to the device of a second workpiece feeding mechanism mounted on the side of the stationary deforming tool, equipped with a pusher, stops, a workpiece hopper and a tray, allows the tool to be processed in two directions, that is, to eliminate the tool idling.

A spring-loaded movable bar, pivotally mounted on a slider next to the rigid stop, allows for the rhythmic rotation of the comb in the operation cycle. This is necessary so that the finished products could slide into the receiving box at the end of the processing course.

A rigid stop mounted on a slider provides restriction of rotation of the movable bar in one direction, which is necessary for the movable bar to act on the comb in the desired direction.

The execution of a stationary deforming tool with the ends of a comb-shaped shape allows the comb to be in the vertical direction. These ends play the role of guides along which the finished product rolls into the receiving box.

The installation of a height-adjustable mechanism for adjusting the height of the stationary deforming tool of a spring-loaded comb on the upper wedge with the possibility of interacting with the movable bar using rollers mounted on the pins allows the workpieces to be based at the initial moment of processing. On a stationary deforming tool, inclined angles are formed on both sides, and therefore, the workpieces, under the action of gravity, will be firmly supported by combs in an upright position. This increases the reliability of processing, eliminating jamming due to improper initial position of the workpieces.

Differences from the prototype prove the novelty of the claimed device.

It is widely known from the prior art to use wedge mechanisms for securing parts and for adjusting the height of individual elements in various objects of technology. In the inventive device, the use of a wedge mechanism for adjusting the height of a stationary deforming tool in combination with other essential features makes it possible to quickly change the device to process other standard-sized parts and accurately set the technological closed height between the tools. When rolling cylindrical products with flat tools, the height between the tools is the main factor that affects the effect of the surface plastic deformation process, including roughness, depth and degree of hardening, and the value and depth of residual stresses. Therefore, the exact setting of the closed height between the tools allows you to achieve the desired processing effect with high reliability of the device, as well as expand its technological capabilities.

In FIG. 1 shows a diagram of the proposed device, a General view without mechanisms for feeding blanks; FIG. 2 is a view A in FIG. one; FIG. 3 is a view B in FIG. 1 without a slider; FIG. 4 is a section BB in FIG. 3.

The following numbers are assigned to the device elements:

1 - Bed

2 - Guide

3 - Slider

4 - Movable deforming tool

5 - Axis

6, 9 - Sliding bars

7 - Rigid spring

8 - Hard stop

10, 11 - Switches

12 - Fixed deforming tool

13, 17 - Combs

14 - Spring

15, 25 - Rollers

16 - Axis

18 - Upper Wedge

19 - Lower wedge

20 - Table

21 - Screw

22, 24 - Boxes

23 - Harvesting

26, 28 - Bunker

27, 29 - Pushers

The device comprises a bed 1, on which a table 20 is mounted with a mechanism for adjusting the height of the stationary deforming tool 12, consisting of an upper wedge 18, a lower wedge 19 and a screw 21, as well as guides 2, in which the slider 3 with a movable deforming tool reciprocates 4. The drive of the slider 3 is a crank-rocker (not shown). On the lateral surface of the slider 3, a movable bar 6 is mounted on the axis 5 and a rigid stop 8. The movable bar 6 is maintained in a vertical initial position by means of a non-rigid spring 7. On the opposite side surface, a similar movable bar 9, a hard stop and a spring are also mounted. On the rails installed switches 10 and 11, which operate and give a signal to the pushers 27 and 29 (Fig. 3), with which the workpieces 23 from the hoppers 26 and 28 are pushed into the processing zone from the side. A comb 13 is mounted on the lateral surfaces of the wedge 18 on the axis 16, pressed against the end of the wedge 18 by means of a spring 14. A similar comb 17 is installed in the opposite end of the wedge 18. The rollers 15 and 25 on the combs 13 and 17 are used to interact with the corresponding movable bars 6 and 9. Two drawers 22 and 24 are installed for placing finished products.

The device operates as follows. When the slider 3 approaches the extreme left position, the slider acts on the switch 11, which is activated and gives a signal to the pusher 27. As a result, the workpiece 23 from the tray moves to the processing zone and rests on the comb 17. When the slider 3 moves along the guides 2 from left to right, when movable deforming tool 4 approaches the workpiece 23, it is captured and further deformation of the workpiece. In this case, the movable bar 6, fixed from rotation about the axis 5 clockwise by a rigid stop 8, interacts with the roller 15 and gradually turns the comb 13 clockwise. When the workpiece 23 is at the end of the processing zone, the comb 13 is completely recessed under the stationary deforming tool 12, the finished product rolls along the inclined comb part of the tool 12 and falls into the box 22. With the further movement of the slide 3 to the right, the movable bar 6 comes out of contact with the roller 15, under the action of the spring 14, the comb 13 returns to its original vertical position. When the slider 3 approaches the extreme right position, the slider acts on the switch 10, which gives a signal to the pusher 29. As a result, the workpiece 23 from the tray moves to the processing zone and rests on the comb 13. When the slider 3 moves from right to left, the workpiece 23 is captured, and processing is done on the right. In this case, the movable bar 6 interacts with the roller 15, rotates counterclockwise relative to the axis 5, and when the slider 3 approaches the left extreme position, it returns clockwise to its original position due to the spring 7. At the end of the stroke, it moves from right to left, similarly, the movable bar 9 also rotates comb 17 counterclockwise to release the finished product into the receiving box 23. The operation of the device is repeated.

Claims (1)

A device for rolling round cylindrical products with flat tools, comprising a slider installed in the frame with a movable deforming tool mounted on it and a stationary deforming tool located under it, characterized in that it further comprises a hard stop mounted on the slider, a wedge mechanism with upper and lower wedges for adjusting the height of the stationary deforming tool installed on the side of the stationary deforming tool pusher, stops, hopper for workpieces and a tray, a spring-loaded movable bar pivotally mounted on a slider and made with the possibility of fixation from rotation by a hard stop, while the stationary deforming tool is made with ends with a comb shape, and on the upper wedge the wedge mechanism for adjusting the height of the stationary deforming the tool has a spring-loaded comb with the ability to interact with said movable bar using rollers worn on the pins.

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