The method of processing streams and grooves on rollers or spacers

 

(57) Abstract:

The invention relates to the processing of streams and grooves of different profile on rollers, rollers, bands and can be used for cutting streams of circular cross section in the rolling carbide rolls, as well as when cutting on these streams screw cross grooves necessary for the rolling of the reinforcing rod. The method is based on the fact that streams are processed simultaneously on two or more rolls. The technical result is expressed in increasing efficiency, productivity and quality of processing. Tool (tap, reamer, drill, milling cutter, tape, wire or rod) is installed between the treated surfaces. If necessary, they can be given a rotary movement. The tool can be in the extended position. 8 C.p. f-crystals. 4 Il.

The invention relates to methods and machines for processing streams of different profile on rollers or spacers, rollers, bands and can be used when cutting streams of circular cross section in the rolling carbide rolls, and when the load on these streams screw cross grooves required for rolling reinforcing rod periodic profile.

indole, for example, grinding machine, tool, made in the form of a disk with the required cutting the outer profile (for example, a disk cutter or abrasive circle with radius profiles), mounted on its spindle, both spindles are parallel to each other, they rotate and the tool down to the roll position or the washer. But the application of this method requires precise manufacturing profile in the machining radial grooves. Screw transverse grooves already cut radial streams, using this method, in General it is not possible to make.

The closest is how to handle the helical grooves on rollers or spacers, in which the axis of the workpiece feature perpendicular to the axis of the tool, the workpiece and the tool reported rotation, submit to the depth of the grooves. In this way, cut worm milling the gear teeth on gear hobbing machines. In the same way cut helical grooves with the use of a mandrel mounted therein a cutter on pre-cut radial grooves, rolling washers for rent reinforcing rod. Such walls are used as domestic production (drawing tool included in the original version of the application), and imenti processing method describes the device and its operation (Fig. 1-4).

In Fig. 1 shows the device of Fig. 2 - section a - a of Fig. 1; Fig. 3 - section In Fig. 2; Fig. 4 is a view As in Fig. 2.

The device consists of the following main components and mechanisms: the mount of the processed rolls and the mechanism of their installation in the desired position; the attachment tool and the mechanism of its longitudinal feeding; mechanism of rotation of the rolls and tools.

The attachment of the processed rolls and the mechanism of their installation in the desired position contains the following main parts. On the body (plate) 1 fixed on the racks 2 fixed parts 3, in which the holes. In the holes of the fixed rod 4 on which is freely mounted cassette 5. The cassettes 5 holes, in which the bearings are mounted shaft 6. On the shafts 6 is rigidly fixed to the sleeve 7, which is rigidly fixed rollers (for example, tungsten carbide washer) 8 and 9. For the supply-removal of the rolls from each other at each corner with screws 10 which are installed in threaded holes formed in the cassette. The screw 10 with its ledge freely mounted between the end of area 3 and figure the washer 11. In Fig. 3 shows only one set of mechanism approach-retraction, but they made four - Kadom of them has a threaded hole, in which set screw 12, and the projections are in the hole of the cassette 5, and the screw is fixed by a nut 13 screwed on the thread cassette 5.

The attachment tool and the mechanism of its longitudinal feed contains the following main parts. On the plate 1 is fixed to the sleeve 14, freely installed speakers 15. In columns 15 fixed plates 16 and 17, in which the holes. In the holes of the set of angular contact bearings 18 and 19 with installed bushings 20 and 21. The sleeves 20 and 21 are made of the teeth of the gears (or fixed gear).

In the performance of the device with the application of electro-physical or electrochemical processing methods sleeve 20 and 21 made of insulating material. In the holes of the sleeves 20 and 21 have the rod 22 of the tool. In Fig. 1 to 4 shows the tool is made in the form of a tap, which is used for cutting helical grooves on the streams, performed on pre-rolls 8 and 9. The tap has a fence cutting edge 23 and calibrating part 24. Depending on the processing method and the shape of the processed grooves of the rolls can be applied and the various tools for processing streams - drills, reamers or cylindrical cutters, or techrockies.com or electrophysical processing method; grooving shaped profile wire drawing (rod) shaped profile; for cutting springs helical grooves or other shaped grooves - taps, hob cutters or when using electrochemical or electro-physical processing method applied to the electrodes (cathodes), completed form by analogy with taps or other metal-working tool; used for grinding wheels or bars. Moreover, depending on the processed material and the tool used from various known material: steel, carbide, diamond or carbide drills, reamers, taps, broaches; electrochemical or electro-physical treatment - copper, brass, graphite or steel electrodes-a cathode, or the same steel, carbide or diamond drills, reamers, taps, broaches. The rod 22 is clamped and stretched, to stiffen it, by means of nuts 30 and 31. The rod 22 may be of small diameter, in order to prevent its twisting gears 20 and 21 are in engagement with gears 32 and 33 rigidly mounted on the shaft 34. The rod 22 is fixed collector drum 35 which is in contact with brushes 36. Wire podatkov and instrument contains the following main parts. The shaft 38 is driven from a motor, not shown in Fig. 1 to 4. On the shaft 38 is made (or fixed) long gear 39 and the worm 40. The gear 39 is in mesh with the gear 20 and the worm with the worm wheel 41 on the shaft of which is fixed a gear 42 which engages with the gear 43. Gears 42 and 43 mounted on the shafts, mounted on bearings, placed in the holes in the rack 44. Hour 44 is equipped with brackets 45, 46 and 47 for mounting the rolls. The gear 42 is in mesh with the gear 48 rigidly mounted on the shaft of the roller 9. Gears 48 and 49 are interconnected in a mesh.

The device operates as follows. First, install the rod 22 with the tap (23, 24), nuts 30, 31 of its stretch. Then screw 50 (Fig. 3) mounted in a strap 16 and secured therein against axial movement and the other threaded end mounted in a threaded hole made in the plate 1 (not shown, because irrelevant and structurally feasible), lifting straps 16, 17 (and thus the tool) to the top. The screws 10 and 12 summarize the rolls 8 and 9 to the rod 22 so that the pre-cut (or this way or diamond circles) streams 51 touched her on top gear 42, 48, 43, 49. When this ratio from the instrument to the rolls is expressed by the formula

< / BR>
where

D is the diameter of the stream 51;

t - the thread pitch of the tap (23, 24).

Then screw 50 is gradually put the tool down and pick up the part 23 of the tap begins to cut spiral grooves on the stream 51. Next, the tool screw 50 is lowered until, when calibrating part 24 of the tap is involved in the work. When the electrolytic method, the wires 37 sum up the current, and the device is set in a bath of electrolyte. The application of other processing methods produce the above-mentioned known methods, but with the use of this device, and depending on the instrument - it rotate or turn off the rotation.

When processing grooves EDM method, when applied as a tool wire 25 or rod initially rolls 8 and 9 away from each other, and then the screws 10 (which can be pairwise kinematically linked) gradually synchronously bring the rolls to each other. In the same way handle grooves and use the other tools: taps without intake parts, cutters, reamers without intaking part, broaches.

When cutting streams 51 resveracine tool.

When the grooving on the rolls used in the rolling mills using cages type "quarto" (in the cage are used simultaneously four roll with perpendicularly arranged rollers) or using cages type "trio" (three roll, also forming a closed caliber), the device is a bit more complicated, because you need kinematically link, or four roll or three-roll, but it is structurally easy - so additionally in Fig. 1 to 4 are not shown. Processing on this device is similar to that of the device according to Fig. 1-4.

Technical and economic effect will emerge from improved processing performance, the possibility of cutting grooves on super hard rolls (type carbide brand VK8 - VK).

An example implementation of the device.

You must perform the helical grooves on the forming rolls 150 mm for rolling rebar wire rod with a diameter of 5.75+0,3-0,5mm deep grooves (0,50,25) mm, a width of the groove (1,20,05) mm in increments of 5 mm And rolled wire should remain the longitudinal ribs with a thickness of 1 mm Mill rolls made from solid alloy grades VC.

Accept the fact that the stream 51 radius 2,875 mm predobrabotka helical grooves produce the device according to Fig. 1-4 electrolytic method using steel tap with drawing on the work surface by galvanic method of diamond powder. The length of the working part of the tap 50 mm, the length of the intake side 20 mm Diameter rod 22 accept (5,70,05) mm Outer diameter cutting feathers calibrating part of the tap will be

5,75 + (0,52) + 0,25 = (7,00,1) mm

When cutting the surface of the rolls 8 and 9 separately from each other at a distance of 1.0 mm, While rotating the tap with a frequency of 3000 min-1rollers should rotate with a frequency of

m

1. The method of processing streams and helical grooves on rollers or spacers, in which the axis of the workpiece feature perpendicular to the axis of the tool, the workpiece and the tool reported rotation, submit to the depth of the grooves, characterized in that at least two billets set in the cassettes symmetrically relative to the axis of the tool, insert the tool between the machined surfaces of the workpiece, the workpiece down to the axis of the tool at the desired distance for simultaneous processing or first workpiece down to the axis of the tool at the desired distance, and then enter the tool between the machined surfaces of the workpiece.

2. The way the form drills, or reamers or cutters, which inform the rotation, and as a material for the manufacture of tool use tool hardened steel or carbide, or diamond coating.

3. The method according to p. 1, characterized in that the workpieces as a machining tool use drawing, or a wire, or tape, or rods, the tool informs the axial displacement, and as a material for the manufacture of broaches use tool hardened steel or carbide, or diamond coated, wire, or tape, or rods - copper, or brass, or graphite, or covered with diamond powder.

4. The method according to p. 1, characterized in that the streams of rolls or washers produce cutting helical grooves restroombathroom tool, which informs the rotation synchronous with the rotation of the washers or rolls.

5. The method according to PP.1 and 4, characterized in that retinoblastoma instrument additionally inform axial movement.

6. The method according to PP.1, 4 and 5, characterized in that as retinoblastoma tool use tap.

7. The method according to p. 1, characterized in that when the electrophysical and electrochemical methods="ptx2">

8. The method according to PP.1 to 7, characterized in that the tool before processing pre-stretch along its axis with a force of up to yield strength.

9. The method according to PP.1 to 8, characterized in that the tool rotate on both sides of the cutting part.

 

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