RU2696988C1 - Device for straightening of non-rigid cylindrical parts with smooth plates - Google Patents

Abstract

FIELD: machine building.

SUBSTANCE: invention relates to machine building and is intended for straightening of non-rigid cylindrical parts like shafts and axles by transverse rolling by smooth plates. In the bed of the device there is a slider with a movable deforming tool and a fixed deforming tool placed under it. Movable deforming tool has two supports and a protrusion. Device also comprises wedge mechanism with upper and lower wedges to control value of absolute reduction, equipped with pusher, hopper and tray with sensor to control direction of curvature of part. Computer is connected to automated device for control of diametrical sizes and curvature of parts shape.

EFFECT: broader technological capabilities of the device.

1 cl, 2 dwg

Description

The invention relates to mechanical engineering and is intended for dressing non-rigid cylindrical parts such as shafts and axes by transverse rolling in smooth plates.

Known flat-rolled rollers (SU No. 462646, IPC, V21H 9/02, published 05.03.1975) containing a bed with a slider, a movable deforming tool mounted on a slider, and a stationary deforming tool mounted on the bed, a workpiece feeding mechanism having a cassette, a tray with a channel and a spring-loaded feeder having a parallel mounted and interconnected gate with a slot and a shut-off device.

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 mechanism for adjusting the closed height between the tools, a workpiece feeding mechanism, a pusher, a bunker for workpieces and a box for placing finished products.

In the known device between the cassette and the feeder on the frame mounted tray store, and on the slider mounted nozzle with a valve for supplying a cooling medium. The feeder is located above the movable tool, but does not enter the area between the tools. 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 installation of a movable tool in the lower position relative to the stationary tool necessitates the creation of a complex system of a node for protecting the slide rails against coolant, which significantly increases the dimensions of the device and complicates its synchronous operation, repair and maintenance.

Also known are flat-rolled rollers (SU No. 529880, IPC V21H 9/02, published September 30, 1976) containing a top stationary tool and a slider mounted with a lower movable tool fixed to it, as well as a tray, feeder and an orienting mechanism having a latch, a limiter mounted on the bed in front of the stationary tool, an emphasis and a spring-loaded lever with a clip.

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 feed mechanism for blanks, a tray for blanks and a box for placing finished products.

A disadvantage of the known device is that the lateral clamp of the orienting mechanism of the workpiece is located above the wedge or knurled elements of the lower movable tool, and the front working part of the clamp in contact with the end face of the workpiece passes into the gap between the movable and stationary tool at the grip area of the workpiece. Thus, the clamp has limited dimensions in thickness, which are limited by the height of the wedge or knurled tool elements, and, therefore, has insufficient rigidity and reliability. In addition, the clamp for some time in the process of gripping is in contact with the end face of the rotating chopped billet. Such contact with an uneven end also reduces the reliability of the clamp and the entire orienting mechanism. Moreover, the reliability of the mechanism decreases with decreasing diameter of the rolled billet.

The closest technical solution to the claimed invention is a flat-rolled device (SU No. 764812, IPC, V21H 9/02, published 09/23/1980) containing a bed with a stationary deforming tool, a slider with a movable deforming tool located above the stationary deforming tool, and also a feeding mechanism with a cassette, tray and feeder having a parallel mounted and interconnected gate with a slot and a cutter.

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, 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 the straightening of non-rigid cylindrical parts, increasing the reliability of the device and expanding its technological capabilities.

The technical result is achieved in that a device for straightening non-rigid cylindrical parts with smooth plates, containing a slider installed in the frame with a movable deforming tool mounted on it, a stationary deforming tool located under it, according to the invention, a device for straightening non-rigid cylindrical parts, to increase the reliability of the device, expansion of its technological capabilities, additionally contains an automated device for controlling diametric dimensions and shape distortion of parts such as shafts and axles, connected to a computer, a sensor for controlling the direction of bending of the workpiece, a tray mounted, a movable deforming tool has two supports and a movable deforming tool with a protrusion for performing the bending dressing process, a wedge mechanism with upper and lower wedges to adjust absolute compression, equipped with a pusher, hopper and tray for blanks.

Distinctive features of the proposed device are that the device additionally contains two rigid supports mounted on a movable deforming tool and a protrusion mounted on a movable deforming tool to perform the straightening process by bending, a device that is equipped with a pusher, sensor, hopper and tray for blanks. 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. In the process of rolling cylindrical parts with flat plates, the absolute reduction value is the main parameter that affects the effect of the dressing process, including the distribution of the uniformity of residual stresses, the value of residual deformation, the depth and degree of hardening, and surface roughness. Thus, 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.

The presence of a new set of essential distinctive features from the prototype in the inventive device for editing non-rigid cylindrical parts with smooth plates allows us to conclude that the claimed invention meets the criterion of "novelty."

An additional comparative analysis of scientific, technical and patent information did not reveal sources containing information about the popularity of the set of distinctive features of the claimed device for straightening non-rigid cylindrical parts with smooth plates, which indicates its compliance with the criterion of "inventive step".

A device for straightening non-rigid cylindrical parts such as shafts and axes by transverse rolling by smooth plates is illustrated by drawings, where in FIG. 1 shows a diagram of the proposed device, a General view of the assembly, and in FIG. 2 shows a top view of this device. The following numbers are assigned to the device elements:

1 - Limit switch
2 - Guide
3 - Slider
4 - Movable deforming tool
5 - Bed
6 - Table
7 - Lower wedge
8 - Screw
9 - Boxes for machined parts
10 - Upper Wedge
11 - Fixed deforming
tool
12 - Projection 13 - Harvesting
14 - Pusher
15 - Hopper
16 - Automated device for controlling the diametric dimensions and curvature of the shape of parts such as shafts and axles (RF patent No. 2218260)
17 - Computer
18 - Supports
19 - Indicator
20 - Tray
21 - Sensor

The device comprises a frame 5 on which a table 6 is mounted with a mechanism for adjusting the height of the stationary deforming tool 11, consisting of an upper wedge 10, a lower wedge 7 and a screw 8, as well as guides 2 in which the slider 3 with a movable deforming tool reciprocates 4 with a protrusion 12. The deforming tool 11 has two supports 18 for bending the workpiece during straightening by bending. The drive of the slider 3 is crank-rocker. A switch 1 is installed on the guides, which is triggered and gives a signal to the pusher 14 with which the workpieces 13 from the tray 20 are pushed into the processing zone from the side. Installed box 9 for placing finished products. An automated device 16 for controlling the diametric dimensions and curvature of the parts such as shafts and axles, connected to the computer 17, works as follows: after loading a batch of parts, the monitoring device and the computer are turned on. The indicator 19 is connected to the computer 17 to measure the total deflection. Screw 8 for adjusting the absolute compression value.

The device operates as follows. Automated device 16 measures the diametric dimensions and the shape distortion of the workpiece, which gives a signal to computer 17. On computer 17, the values of the total deflection of the workpiece are determined and information is transmitted to device 19. Next, the workpiece is moved to the tray 20 through the hopper 15 and here the sensor 21 controls the direction of the workpiece curvature . When approaching the slider 3 to the extreme right position, the slider acts on the switch 1, which gives a signal to the pusher 14. As a result, the workpiece 13 from the tray moves to the processing zone. Next, the slider 3 moves to the right and stops after touching the workpiece 13 with the protrusion 12. Then the slider 3 continues to move to the right by the amount of the total deflection. When moving the slider 3 in the direction from right to left, the workpiece 13 is captured and the workpiece is transversely run in. At the end of the stroke of the slider 3, the finished product is moved to the receiving box 9. After this process, the operation of the device is repeated.

Claims (1)

A device for straightening non-rigid cylindrical parts with smooth plates, containing 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 additionally contains an automated device for controlling the diametrical dimensions and shape distortion of the parts, a sensor mounted on the tray to control the direction of the curvature of the parts, a wedge mechanism containing upper and lower lines for regulating the magnitude of the absolute compression, the pusher and the hopper, while the movable deforming tool is made with two supports and a protrusion to perform the editing process by bending.

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