Way to edit circular saws

 

The invention relates to rolling production, and in particular to machines and methods edits circular saws from sheet material. Way to edit circular saws includes the supply of the drive in the treatment area using the carriage, enabling the rotation of the rollers, compression drive and idle rollers fixed disk when inserting and removing it from the rollers, while ypravliaemii disk injected into the rollers to the landing of the disc at a rate equal to 35-40% of the maximum speed of the carriage, and remove the disc from the rollers before reaching the periphery of the disc with varying speeds, depending on flatness of surface, and the path edit disk is divided into three equal area, on the borders of which is determined by the magnitude of the velocity depending on the maximum speed of the carriage, in particular, when the flatness of the surface of the disk-type plate output drive of the rollers is produced at the same speed, when the flatness of the surface-type “screw” or “propeller” output drive of the rollers produce at other speeds, whereby the speed change from one another linearly depending on the traversed path, each correct roller is performed in three independent cylindrical clips, free BP is AMI, in addition, drive and non-drive rollers are fitted to each other with a pitch equal to 0,9-1,2 diameter of the roller. To reduce the compressive stress of the surface of the disk thick grease lubricant, such as grease or lithol. The edit disk spend several cycles to obtain the curvature of not more than 1 mm per linear meter. The invention provides improved quality edits circular saws. 2 C. p. F.-ly, 2 Il.

The invention relates to rolling production, and in particular to machines and methods edits circular saws from sheet material.

A device for straightening containing the mobile and stationary head plate installed on their axes odd number of correct rollers, arranged in a checkerboard pattern and kinematically linked, in addition the device is equipped with at least two tensioning blocks, one of which is placed in front of the correct rollers and the other for them, considering the course of the process, spring-loaded in the direction of the rollers, and the middle roller on one of the traverse is fixed, and the other rollers are mounted with the possibility of reciprocating adjustment move along the process p. the irradiation axis of the rollers and blocks [1].

The disadvantage of this device is that the rolls are in one line with the same amount of deflection, and this leads to slippage of the rolls and the occurrence of burrs on the metal, as well as to the warping of the disk.

There are ways to edit the sheet metal on multi-roll belt machines. Edit on multi-roll belt machines made by moving the correct product between the rotating rollers arranged in a checkerboard pattern.

The distance between the rows of rollers is adjustable and is normally less than the thickness of the sheet to provide multiple alternating alternating bends. Using different combinations largest successive deflections of the sheet each roller or otherwise various technological schemes of editing, depending on the dimensions, mechanical properties of the material, the requirements for accuracy edit and so on [2].

However, all these multi-roll belt the most effective machine for sheet metal, when you edit the same circular saws effect is relatively low, the metal after such processing is subject to distortion, and also characterized by high residual stresses.

Closest to the technical nature of the proposed machine is the Nata [3].

Machine for dressing drives drunk is an archipelago of the following mechanisms:

- the mechanism of radial flow disk in the treatment area, the mechanism of rotation of the rollers comprising two driven pulley and the block of idle rollers, containing three non-driven roller and the clamping mechanism unit idle rollers containing pressure screw rotated from two independent worm gears.

The drive rollers mounted on the frame of the machine and are driven by an electric motor, the idle rollers are connected with a screw-down mechanism, which creates a common trough. Wedged thus the disk also is driven into rotation. The feed mechanism moves the disk so that the rollers as close as you can come to the planting hole, and then moves the disk, erasing it from the rolls.

However, when the machine is in operation, the quality of straightening the wheel becomes unsatisfactory, and it turns out the defect type "plate". The main causes of this defect is the following:- the point on the surface of the disk moving in a circle so that when the labor movement of the machine there is slippage of the rollers in almost all lines of touch with the disk. The result of sliding on the surface of the disc on the metal burrs are formed and, shadowstyle rollers and N3 and N 5 are configured to deflections created plastic deformation, and the roller N 2 was located at the boundary between elastic and plastic deformation. However, when breeding videos - clip No. 1 goes into the zone of elastic deformation and the edit does not participate, and. videos # 3 and # 5 are still in the zone of plastic deformations. Thus there is not edit, and flexible.

The objective of the invention is to improve the quality of the edits circular saws.

The problem is solved due to the fact that ypravliaemii disk injected into the rollers to the landing of the disc at a rate equal to 35-40% of the maximum speed of the carriage, and remove the disc from the rollers before reaching the periphery of the disc with varying speeds depending on the type of flatness, and the path edit disk, divided into three equal area, on the borders of which is determined by the magnitude of the velocity depending on the maximum speed of the carriage, in particular, when the flatness of the surface type "plate" output drive of the rollers is produced at speeds of:

speed 1 4-6% - beginning of the 1st section,

speed 2 13-15% - beginning of the 2nd section,

speed 3 38-42% - beginning of the 3rd section,

speed 4 68-73% by the end of the 3rd section,

when the flatness of the surface-type "screw" or "propeller" o ro>/p>speed 3 28-32% - beginning of the 3rd section,

speed 4 48-53% by the end of the 3rd section,

moreover, the speed change from one another linearly depending on the traversed path, each correct roller is performed in three independent cylindrical casing, a freely rotating relative to each other and located on a common axis with an interval of 10-15 mm between adjacent hoops, also driven and non-driven rollers are fitted to each other with a pitch equal to 0,9-1,2 diameter of the roller. To reduce stress shear the disc surface is smeared with grease, such as grease or lithol, and edit disk spend several cycles to obtain the curvature of not more than 1 mm per linear meter.

Machine for dressing circular saws consists of the following main components and mechanisms: the bed, the block of idle rollers, the rollers working with the drive mechanism pressure, equipped with a pulse sensor, the feeder disk, provided with a pulse sensor for tracking work movements.

The bed is a steel rolling type, welded from sheet metal, in which you are working rollers with the drive-pressure mechanism, the block of idle rollers.

The block of idle rollers upravlyayuschim, attached to the frame: in case inserted three non-driven roller, the position of each relative to vipralambha disk can be independently adjusted by rotating the adjusting screws through the worm-cylindrical transmission.

The working rollers with the drive, including two driven rolls mounted in the housing, which is attached to the frame, two spindle, gearbox and motor.

The push mechanism is used to clamp a block of idle rollers containing pressure screw, driven from the worm-cylindrical transmission S 16016 by electric motors. The pressing roller unit is carried out by means of the adjusting screw through the thrust bearing.

The mechanism of radial flow disk in the treatment area includes the site of the carriage moving along the cylindrical guides by means of lead screw connected to a DC motor via a worm gear.

The proposed method of editing discs is illustrated by drawings on which is shown:

Fig.1 - scheme edits circular saws rollers;

Fig.2 - design of the roller leveler.

The editing process is performed in the following sequence

First start the machine in its original state and nalivajut disk you want to edit, and fix it with the lock ring, then include automatic operation of the machine. Then hold a working setup of the machine by moving the idle rollers from the zero position in the horizontal direction on the values necessary to edit the deflections, which put the wheels move idle rollers readings corresponding deflections. Then enter the process parameters vipralambha disk. These include: the diameter of the disk, the thick disk, the size of the General working of the trough, the speed of drive in movies and velocity distribution during insertion of the disk, depending on the flatness of the disc. After running the machine on a work cycle is the movement of the drive to the rollers at the maximum speed, when the drive position when the teeth are near the rollers, the drive movement of the disc to stop it.

If necessary, direct drive, so he freely passed between the right roller. Then again switch on the automatic mode of the machine, when the drive for the length of the roll, the transfer mechanism is stopped and automatically turns on the compression mechanism and the creation of a desktop Prognos carriage speed, and remove the disc from the rollers before reaching the periphery of the disc with varying speeds, depending on flatness of surface. In this case, path editing, equal to the radius of the disk, divided into three equal area, on the borders of which is determined by the magnitude of the velocity of the carriage. In particular, when the flatness of the surface type "plate" output drive of the rollers is produced at speeds of:

speed 1 4-6% - beginning of the 1st section,

speed 2 13-15% - beginning of the 2nd section,

speed 3 38-42% - beginning of the 3rd section,

speed 4 68-73% by the end of the 3rd section,

when the flatness of the surface-type "screw" or "propeller" output drive of the rollers is produced at speeds of:

speed 1 4-6% - beginning of the 1st section,

speed 2 11-13% - beginning of the 2nd section,

speed 3 28-32% - beginning of the 3rd section,

speed 4 48-53% by the end of the 3rd section.

The removal of the disk is the most critical step in the processing chain, because the quality of the edits entirely depends on the type of the initial defect and the distribution of velocities in the process of removing the disc from the rolls. This is explained as follows: when the alternating deformation in the metal structure is the seal of the crystal lattice, and hence reduction of the linear dimensions, so the second shrinkage (closer to the center or at the periphery of the disk), the Exodus from the fact that the higher the rate of excretion, the fewer cycles of deformation on the selected plot will be produced, the less the shrinkage. For example, if the initial defect type "plate" the greatest shrinkage should be in the center of the disk, and on the periphery of the smallest, therefore, during insertion of the drive speed must first be low, and at the end of the breeding high. When the defect type "screw" the greatest shrinkage should be made on the periphery of the disk, and the speed as excretion should be changed more smoothly. To control the mechanisms of the machine, equipped with software logic controller, thanks to which there is automatic edit drives.

Each correct swath made in the form of 3 typesetting cylindrical casing 4 (Fig.2) which is free to rotate relative to each other. So there is no slippage of extreme points of the movie on the disc surface and does not occur scuffing and excessive buckling of the metal. Inlaid cylindrical casing located at a distance of 10-15 mm from one another, because of the cylindrical casing are located at different distances from the mounting bore vipralambha disk, and the radii of movement and speed of rotation are different, which in the final stage Ie) is equal to 0,9-1,2 diameter roller.

To reduce stress shear the metal surface of the disk thick grease lubricant, such as grease or lithol.

Unlike edits drives the prototype developed a new algorithm of the process of editing on new modes of introduction and removal of fixed disk out of the rollers. The proposed machine for dressing works in automatic mode and eliminates all kinds of flatness by the method of alternating bending leaf drive, turn right rollers in radial flow disk relative to the rollers from the periphery of the disk to its center and back.

If the curvature of the disk exceeds 1 mm/p. M., the cycle is repeated edits.

An example of a specific implementation of the

The edit was to be a disk of hot cutting with an outer diameter of 2000 mm,

the thickness of the disk - 8mm

the diameter of holes - 400 mm

- the number of correct clips

(2 drivers and 3 blank) - 5

- roller diameter - 300 mm

the length of the roller (3-and typesetting

a cylindrical cage

on the same shaft) - 320 mm

the length of one cylindrical

clip size - 100 mm

- the gap between the clamps 10 mm

- the distance between adjacent rollers (step) - 300 mm

- maximum speed of carriage travel - 25mm/sec

- accurate editing - 1.0 mm/R.M

- the number of cycles of processing - 2

Edit the disk was performed in automatic mode according to a given program. For this purpose, we used program logic microcontroller S7-200 operator panel OP 7 Siemens.

The disk is subjected to the edit on the proposed technology acquires additional rigidity, which ensures the cutting quality, and increases its wear resistance.

Speed modes and geometrical parameters of rollers for straightening disks were obtained experimentally. Under such ratios were achieved the best performance. The thus treated disks had a good surface quality, without dents, scratches and waviness, appearing in the process of editing before.

Thus, the claimed invention fully accomplishes the task. Comparative analysis of the proposed technical solution and prototype shows that the technology proposed edits circular saws can improve the quality of fixed defects on the disc surface and to increase their service life, which confirms the compliance with the criterion of "novelty".

The analysis of patents and scientific literature did not reveal ispolzuya solutions that allows to make a conclusion about its compliance with the sign of "inventive step".

The specific use of the invention in terms of Nizhny Tagil metallurgical plant confirms the industrial applicability of the invention.

Bibliography

1. A. C. 925470. 21 D 1/02, publ. in bull. No. 17 of 1982

2.Slonim, A. H., Sonin A. L. edit sections and sheet metal. - M.: metallurgy, 1981(pages 39-51).

3. Utility model N 7912 "Machine for dressing circular saws", 21 D 1/00, published. in bull. N 10, 16.10.1998,

Claims

1. Way to edit circular saws, including the filing of the disk in the treatment area using the carriage, enabling the rotation of the rollers, compression drive and idle rollers fixed disk when inserting and removing it from the rollers, characterized in that ypravliaemii disk injected into the rollers to the landing of the disc at a rate equal to 35-40% of the maximum speed of the carriage, and remove the disc from the rollers before reaching the periphery of the disc with varying speeds, depending on flatness of surface, and the path edit disk is divided into three equal area, at the boundaries which define the magnitude of the velocity depending on the mA roller is produced at speeds of:

speed 1: 4-6% - beginning of the 1st section,

speed 2: 13-15% - beginning of the 2nd section,

speed 3: 38-42% - beginning of the 3rd section,

speed 4: 68-73% by the end of the 3rd section,

when the flatness of the surface-type “screw” or “propeller” output drive of the rollers is produced at speeds of:

speed 1: 4-6% - beginning of the 1st section,

speed 2: 11 -13% - beginning of the 2nd section,

speed 3: 28-32% - beginning of the 3rd section,

speed 4: 48-53% by the end of the 3rd section,

moreover, the speed change from one another linearly depending on the traversed path, each correct roller is performed in three independent cylindrical casing, a freely rotating relative to each other and located on a common axis with an interval of 10-15 mm between adjacent carriers, in addition, drive and non-drive rollers are fitted to each other with a pitch equal to 0,9-1,2 diameter roller.

2. The method according to p. 1, characterized in that to reduce the compressive stress of the surface of the disk thick grease lubricant, such as grease or lithol.

3. The method according to any of paragraphs.1 and 2, characterized in that the edit disk spend several cycles to obtain the curvature of not more than 1 mm per linear meter.

 

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FIELD: plastic working of metals, possibly bending and straightening sheet parts of different contours.

SUBSTANCE: method comprises steps of using polyhedral rotary jibs for shaping sheet parts in addition to lower driven roller shaping member; in order to move blank to new bending lines using crane jibs; in order to hold and to reliably move worked blank using self-rolling barrel-shaped supports arranged under blank. Machine tool for performing the method includes polyhedral rotary beams having on their faces different-configuration recesses. It is possible to use inserts mounted in recesses of beams. Deforming members may be in the form of quick-changeable rollers.

EFFECT: simplified design, enlarged manufacturing possibilities.

4 cl, 3 dwg

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