JPS5810422A - Burring device for long rod material and its dies edge - Google Patents

Abstract

PURPOSE:To perform the burring quickly by providing the circumferential curved face on a burring edge of a split type dies and performing the smoothing only by simply drawing out the long rod material. CONSTITUTION:The cutting chip 3 of the burring edge is secured to the holder 4 of a radial direction driver 2 and said chips 3, 3... are moved radially and collected to the central portion to provide one dies type burring edge. A long rod member 5 is passed axially as shown by an arrow (a) through the dies hole in the burring edge 3 then collides against a stopper 7 to be stopped and the pushing out of the long rod member 5 will be started by the piston 8 of the hydraulic cylinder, but the curl to be bent by the recessed face of the chip 3 of the edge collected at the central portion to form single dies is cut preliminarily by the edge 11A while furthermore the small curl is also cut down finally by means of the edge 11. The decurl is pushed to the end face side by means of the recessed face 12 to be but down completely.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a sawing device for a long round bar material such as a round steel material, and a die blade used therein.

BACKGROUND OF THE INVENTION Long round bars, such as round steel bars, which are continuously produced in large quantities by rolling, are cut into rated dimensions, undergo multiple treatments, and are bundled and shipped. The production volume is increasing day by day, and now that each process is being streamlined, it is increasing dramatically due to innovations in steelmaking technology itself. In addition, an integrated production line is installed from steel manufacturing to shipping, and any stagnation in one process will affect the entire process line.

Of course, speeding up the deburring process after cutting, which is seven of the processing steps, is also required. The conventional deburring method, in which deburrs are removed from strips of strips transported on an automatic conveyance line using a rotary grinder while being conveyed crosswise, has reached the point where it is no longer possible to speed up the process. On the other hand, it is also difficult to equalize uneven thickness. Since it is faster to feed a long material vertically in one direction, it is better to perform deburring processing during vertical feeding. Therefore, a dice-type deburring method can be considered.

In view of the above, it is an object of the present invention to perform deburring using a die method, and to provide an appropriate device and deburring blade for this purpose.

The present invention will be specifically described in detail with reference to seven embodiments shown in the drawings. In FIG. 7 or FIG. 2
is attached, and the radial drive device has a movable body that applies an elastic force in a direction centripetal to the common central axis. For example, this drive device is a hydraulic cylinder, and a movable body is integrally attached to the piston of the hydraulic cylinder. It is used as a holding body that can hold and fix the OT brake body deburring blade fragment 3.

The cutting blade pieces 3, 3, which are firmly fixed and held by each holding body, become seven die-shaped deburring blades when they are moved in the radial direction and gathered at the center. . In other words, fragment 3 corresponds to seven pieces obtained by dividing seven die-shaped deburring blades into equal angularly spaced planes extending back from the center axis. The seven die-shaped notching blades formed by the assembled pieces may have seven die functions, and adjacent pieces may be axially shifted from each other. - Also, the point that it is more convenient to have the position shifted will become clear from the explanation of the operation described later. Because the positions are shifted, if the die holes of the seven dies are for 70θφ, the pieces that make up the die holes will be 70θφ from the /3θφ position, for example.
It can be driven radially to the 0φ position. Of course, seven dice actions can be obtained at the 10θφ position.

An appropriate stopper or the like is provided to prevent further movement toward the center from about 70φ 1d.

Below, the position outside the /θOφ position is the enlarged position, 100
The position inside the φ position will be referred to as the reduced position.

A 100φ strip is inserted into the enlarged hole of the deburring blade in the enlarged position. For example, a bar length of 100φ is shown in the O diagram. The shaku material passed from the right side in the Oko diagram! hits stopper O and stops. A round hole 7 smaller than the diameter of the shredded material is drilled in this stopper B, and the shredded material J is strongly pushed back through this round hole 7 by a push rod ♂ driven by a hydraulic cylinder. A pull-out type may be used, but it is easier to push it back.

Note that the pedestal is supported so as to be movable in the vertical and horizontal directions, and the radial position can be sub-adjusted with respect to the fixed position of the barley material to be passed through the enlarged die hole.

A fragment of a paring blade (sometimes referred to as a die) is shown in FIG. At least one of the hole edges 19 on both sides of the die hole in the left direction is provided with a circumferential concave curved surface /θ.

The axially inner circumferential surface of this circumferential concave curved surface is sharply formed as a blade edge. This blade edge // matches the circumference of the inner peripheral surface of the die hole 9, but does not necessarily need to match. For example, another circumferential concave curved surface /θA may be connected to the previously described curved surface /θ and provided closer to the outside. That is, lPl+! A local concavity can be formed on a composite surface. In this case, the connecting line becomes another blade edge //A.

A circumferential concave curved surface /2 is also formed at the hole edge opening on the opposite side. The point that a concave curved surface is provided is similar to that on one side I, but the circumferential concave curved surface on the other side H has an outer edge with a blade edge/3.
It is sharply formed.

The action of deburring using this deburring blade is shown in order from the OG diagram to the OFF diagram 3. Deburring blade 3 in enlarged position
When the bar length material is passed through the die hole in the direction of the axis of arrow a, it hits stopper 7 and is twisted 1E (left and right reversed from the approved drawing).
The radial drive device λ is pressed all at once, and all the pieces move toward the center. If the bar length material is 10θφ, the pieces of the 100φ die gather in the center and form one die (Owa diagram). The hydraulic cylinder of the axial drive device operates, and the piston ♂ begins to push out the bar material (Fig. 1).

The blade fragment 3, which is strongly pressed toward the center in the radial direction, is bent by the outer concave curved surface 10A of the compound concave curved surface. severed,
At the position shown in Figure O♂, the small burrs are finally cut off by the blade edge//, and the bar length j is further pushed out under the action of the die, and most of the burrs are squeezed out by the die hole. figure). There may still be 8t5 K paris left, but as seen in the off-0 diagram, if you place it in this position, it will slide over the end of the bar and become smaller than the 100φ position. Push all of the remaining burrs that may still remain on the other one round curved surface 7.2 to the end face of the rod scale I (O/θ diagram) and push it out at an appropriate speed Uvg. In order to cut off the corner around the entire circumferential area so that the other blade edge cuts into the end surface of the bar length material at an angle of about 0. It will be completely dropped. As shown in Figure 3, the fragment blade does not advance toward the center line beyond this position and returns to the starting position. Since deburring is often sufficient up to the Owa figure stage, the concave curved surface /2 of -G is not necessarily necessary.

Although this deburring blade 3 is similar to a die, it is not used for rolling, so there is no need for so-called die action.
It would be good if Paris could be removed to a certain extent. Therefore, the seven die holes formed by the seven deburring blades formed by the collection of pieces gathered in the center are made perfect circles. The rolled strips are not perfectly circular, but more or less elliptical, or have diameter differences. On the other hand, the more the blade is divided into parts, the more effectively it can be gripped around the outer periphery of the round steel shape. Further, since the adjacent fragments are shifted in the axial direction, the state shown in the O/θ diagram is possible, but at the same time, it is preferable that the adjacent fragments that are shifted in position overlap each other. In this way, it is possible to prevent burrs and burrs from remaining.

A part of the bar length conveyance line incorporating the above-mentioned apparatus IT of the present invention is laid out as shown in the og diagram. Reference θ is an inclined skid, and 2/ is a 7-piece pick-up device for taking 7 pieces of barley material, horizontally feeding them, and placing them on a grooved roller table 22.

This lawn table 22 is 111 so as to be sent to the left in the figure.
It is used as a vertical feeding device that rotates the material and sends it to the deburring device 23 according to the present invention on the left, and then sends it to the right again after deburring. 2
is a roller table. Place the deburred shank material on υ into the second
This is a forking beam device for transferring to the second roller table.

Off roller table 2! To the right of this is another pari-tori-so j' kumito. The part of I'1lil Rui's paris removed is transferred onto another inclined skid 2O, and although not shown, it is further connected to the 5ζ line heading to the next process.

With the above-described layout, the edges of the bar material are quickly deburred. The movement of the strip required for deburring is axial feed, that is, axial feed as seen from the deburring blade, so the feed is sufficiently fast. Therefore, the speed of the entire production line will not be compromised.

The deburring blade of the present invention is in the form of a die, but since it is a split type, it is possible to introduce a length of material into it, and at the same time, the deburring blade is removed by the die action, so it is only necessary to pull it out. One deburring process can be easily completed with a rotary grindstone, and deburring can be done instantaneously with a rotary grindstone.In the past, it took a long time just to remove the deburr, but the feed speed of the entire line has to be increased. Although there were limitations, the present invention can easily overcome those limitations.

In addition, since the burr removal blade has a circumferential curved surface, it is possible to push down most of the clinging burr and then use the blade edge to cut off the root of the burr that is clinging to the end surface of the bar length. There is no need to go all the way around most of the Paris with a rotating whetstone, and the finish is in excellent condition. Depending on its fragment structure and shape, it can function as a cutting blade while also having a die function.

[Brief explanation of drawings]

Figure 7 is a front view of an embodiment according to the present invention, Figure 2 is a side view thereof, and Figure 3 is a sectional view of another embodiment of the invention, from the Oda diagram to the Off-line diagram 3. 1 is a sectional view for explaining the operation of the present invention in order, and the diagram is a plan view showing a layout of a part of the shaku production line. /, 1. trestle, 292. Radial drive, 3°09.
Cross section of deburring blade, g00. Holding body, G1. . Hoshaku material, Wa91. Die hole, 10. ,, circumferential concave surface, /
θA00. Seven more circumferential concave curved surfaces, ii,,,blade edge,/
/A ,,,7 more blade edges, /2. ,, circumferential concave curved surface on the other side, /3. ,, the edge of the blade on the other side. Rod 10 Diagrams etc. 72 Notes

Claims (3)

[Claims] (1) When a plurality of fragment blades are brought together toward a common axis line, each fragment blade is movable in the radial direction and attached to a plurality of holding bodies so that a single round-hole die-shaped deburring blade is formed. a radial drive device that is convertibly held and drives all or part of the plurality of holding bodies by applying an elastic force to the plurality of holding bodies toward the common axis; and a collection of the plurality of fragmentary blades. and an axial drive device for driving the strip material in the axial direction of one deburring blade of the die die-sinking body. (2) A self-contained device in which adjacent pieces are brought together toward a common center at axially offset positions. (3) When gathered together, they form a single die, and
A deburring blade that is a set of a plurality of fragmentary blades that are compressed in the centripetal direction to form one die,
The single die formed when assembled has a circumferential concave curved surface on at least one of the hole edges on both sides of the die hole, and an axially inner end of the circumferential concave curved surface as a cutting edge. A paring blade for shaku lumber, which is characterized by its sharp shape.