JPH07276200A - Chamfering method for cut material and device therefor - Google Patents

Abstract

PURPOSE:To remove the generation of dust and noise and maintain good work environment by chamfering in an arc shape or a slant shape by roll molding by a chamfering roller. CONSTITUTION:When a cut material P is push-pressed in both directions of a plate width direction and a plate thickness direction, respective molded pats 11c, 12c, 13c, 14c of respective chamfering rollers 11-14 are push-pressed to respective ridgeline parts Pd, Pd of the cut material P consequently and this push-pressed part is rolled and deformed in an arc shape along the shape of molded parts 11c, 12c, 13c, 14c. Then, respective chamfering rollers 11-14 are reversed and the cut material P is moved backward as being in a push-pressed state by respective chamfering rollers 11-14. By backward moving of this cut material P, respective ridgeline parts Pd, Pd on the parts from the initial push- pressed point of the cut material P to its tip surface are chamfered in order in an arc shape by a rolling operation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chamfering method and an apparatus for chamfering a ridge line between a cut surface and a non-cut surface of a cut material obtained by cutting a steel plate into a strip shape. It is a thing.

[0002]

2. Description of the Related Art For example, in steel structures, bridges, ship structures, etc., a cutting material made by cutting a steel plate into a predetermined shape is often used as a constituent member thereof. Then, a structure using such a cutting material is coated for the purpose of preventing corrosion and improving appearance.

In this case, as shown in FIG. 8, in the cutting material P, a ridge line formed at a continuous portion of the cutting surface Pa located in the plate width direction, the upper surface Pb located in the plate thickness direction, and the lower surface Pc. The portion Pd has a square edge shape regardless of which cutting method is used.
When the above is used as it is and is coated, the coating is likely to be peeled off from the ridge line Pd.

Therefore, in a structure constructed by using such a cutting material, it is necessary to chamfer the ridge line portion to eliminate the edge portion before using the cutting material. is there. In this case, conventionally, so-called thread chamfering which cuts the ridge line portion Pd into a flat surface was generally adopted, but recently, from the viewpoint of strengthening the protection of the coated surface, as shown in FIG. It is required to perform chamfering in an arc shape (for example, about 2R) on the ridge line portion Pd.

[0005]

By the way, as a method for carrying out such an arcuate chamfer, a grinding process by a grinder, a cutting process by a cutter and the like have been conventionally adopted. ,
The work environment deteriorates due to the generation of dust and noise.
There has been a problem that the operating costs are high due to the heavy consumption of cutters and the like. Further, when automating the chamfering process, it is necessary to consider the degree of wear of the grindstone and the grinder, which causes a problem that the control system becomes complicated.

In view of this, the invention of the present application makes it possible to reduce operating costs by making consumables unnecessary, maintain a good working environment, and facilitate the automation of the apparatus, and at the same time, chamfer the cutting material to ensure high product accuracy. It was made as a proposal for a method and its apparatus.

[0007]

In the present invention, the following constitution is adopted as a concrete means for solving such a problem.

First, regarding the chamfering method of a cutting material, a chamfering roller having a ridge portion of a cutting surface of a cutting material obtained by cutting a metal plate material into a strip shape, and an arc surface-shaped or inclined surface-shaped forming portion on the outer periphery thereof. When the chamfering roller is rotated while pressing the forming portion, the ridge line portion is continuously rolled and deformed to chamfer into an arc surface or an inclined surface, the tip of the cutting material is chamfered. After advancing to a position that protrudes forward of the roller by a predetermined amount and stopping it, the forming portion of the chamfering roller is pressed against the ridge line portion of the cutting material, and the chamfering is performed in this state. While reversing the roller to move the cutting material backward, the chamfering of the ridge portion from the initial pressing point where the chamfering roller abuts to the tip is completed, and the chamfering to the tip is completed. At this point, the chamfering roller is once stopped and the pressing force on the cutting material is released, and then the cutting material is advanced again so that the initial pressing point is located at the front side in the conveying direction by a predetermined amount with respect to the chamfering roller. At that time, the cutting material is stopped, and the chamfering roller is pressed again against the ridge line portion of the cutting material, and in this state, the chamfering roller is normally rotated so that the initial pressing point of the ridge line portion of the cutting material. The chamfering is performed from the portion to the rear end, and at this time, the correction rollers arranged on the front and rear sides of the chamfering roller regulate the deformation of the cut material in the plate width direction.

Further, regarding the chamfering device for cutting material, a conveying means for sequentially conveying the cutting material obtained by cutting a metal plate material in a strip shape, and a peripheral portion thereof contacting a surface in the plate thickness direction of the cutting material. A contact surface in the plate thickness direction and an abutment surface in contact with the cutting surface located in the plate width direction and an arc surface or an inclined surface in contact with the ridge portion located in the continuous portion of the plate width direction pressing surface and the plate thickness direction surface and the cutting surface A chamfering roller having a shaped section with a uniform cross section and disposed in the middle of conveyance of the conveying means, and the plate thickness direction pressing surface and the plate width direction pressing surface of the chamfering roller. And pressing means for pressing against the cutting surface,
A plurality of straightening rollers each having a contact surface capable of contacting the cutting surface of the cutting material and arranged at both front and rear positions of the chamfering roller in the cutting material conveying direction, and the cutting by the surface roller. In the pressed state of the material, the pressing surface in the plate width direction of the chamfering roller and the contact surfaces of the respective correction rollers located before and after the chamfering roller are positioned on the same straight line parallel to the conveying direction.

[0010]

In the chamfering method and apparatus for a cutting material according to the present invention having the above construction, the following effects can be obtained.

That is, first, the cutting material conveyed in the longitudinal direction by the conveying means is advanced to a position where the tip of the cutting material protrudes forward of the chamfering roller in the conveying direction by a predetermined amount and is stopped. Here, the plate thickness direction pressing surface and the plate width direction pressing surface of the chamfering roller are brought into contact with the plate thickness direction surface and the cutting surface of the above-mentioned cutting material, respectively, and are pressed by the pressing means to indirectly perform the chamfering roller. The molded part of is pressed against the ridge of the cut material.

In this state, when the chamfering roller is reversed to move the cutting material backward, a portion of the ridge line portion from the initial pressing point at which the chamfering roller first abuts to the tip thereof is chamfered. Chamfering is performed by being subjected to a rolling action by the forming portion of the roller and being deformed into an arc surface shape or an inclined surface shape corresponding to the shape of the forming portion.

Next, when the chamfering to the tip of the cutting material is completed, the chamfering roller is once stopped and the pressing force of the chamfering roller on the cutting material is released. After that, the cutting material is advanced again by the conveying means, and the conveyance of the cutting material is stopped when the initial pressing point is located on the front side of the chamfering roller by a predetermined amount in the conveying direction. Then, the molding portion of the chamfering roller is again brought into contact with the ridge line portion of the cut material and pressed by the pressing means, and the chamfering roller is normally rotated in this state. Then, the portion from the initial pressing point to the rear end of the ridge line portion of the cut material is subjected to the rolling action by the forming portion and is deformed into a shape corresponding to the shape of the forming portion, whereby chamfering is performed.

At this time, the contact surfaces of the plurality of straightening rollers arranged at both front and rear positions of the chamfering roller in the cutting material conveying direction and the plate width direction pressing surface of the chamfering roller are parallel to the cutting material conveying direction. Since it is positioned on the same straight line, even if the cutting material is deformed in the plate width direction due to the rolling action of the chamfering roller, it is regulated by the respective straightening rollers, By correcting the deformation of the cutting material in the plate width direction, the product accuracy after chamfering is maintained well.

[0015]

As described above, according to the chamfering method and apparatus for a cutting material of the present invention, the following effects can be obtained.

Since the chamfering roller is used to perform chamfering in an arc shape or an inclined shape by rolling forming, dust and noise are not generated as in the case of grinding with a grinder or cutting with a cutter, and the working environment Will be well maintained.

Since the chamfering roller wears very little, the operating cost can be reduced as compared with the case where a consumable item such as a grindstone or a cutter is required, and the chamfering roller wears out almost at the time of automating the chamfering work. The control system is simplified because it does not need to be considered, and its automation is easy.

In the chamfering work, first, the chamfering roller is pressed at a position on the front side in the transport direction from the tip of the cutting material to move the cutting material backward, thereby chamfering the portion from the initial pressing point to the tip. After this, the chamfering roller is pressed again within this first chamfered area, and the front side portion is chamfered from this position.
Without leaving chamfering left, it is possible to reliably chamfer the ridge portion over the entire length of the cutting material,
High work reliability is ensured.

When chamfering is performed by rolling and deforming the ridge line portion of the cut material with the chamfering roller, the cut material may be deformed in the plate width direction depending on various conditions such as the rolling direction during manufacturing of the cut material. However, by disposing straightening rollers on the front and rear sides of the chamfering roller and restricting the deformation of the cut material in the plate width direction by the straightening roller, a product without deformation in the plate width direction can be obtained. In combination with the described reliable chamfering action, a high level of product accuracy is ensured.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A chamfering device for cutting material according to the present invention will be specifically described below with reference to an embodiment shown in the accompanying drawings.

[Structure of Chamfering Device Z] FIGS.
A chamfering device Z according to an embodiment of the present invention is shown. The chamfering device Z is disposed in the middle of the conveying device Q, and the first roller supporting unit 1 and the second roller supporting unit 1 are provided so as to face each other with the conveying device Q sandwiched in the width direction. The roller supporting unit 2 is provided.

First Roller Support Unit 1 As shown in FIGS. 1 to 3, the first roller support unit 1 has a front surface 3a on a floor surface G in a direction in which the front surface 3a is aligned with the transport direction of the transport device Q. The fixed frame 3 fixed toward the fixed frame 3 and the pair of left and right guide shafts 21 and 21 arranged in a stacked state at the upper position of the fixed frame 3 and standing upward from the fixed frame 3 side. The movable frame 4 is movable up and down in the direction (arrow U-D direction). The movable frame 4 is driven up and down by the expansion and contraction of a pair of left and right hydraulic cylinders 16, 16 arranged on both the left and right sides thereof. An accumulator (not shown) is interposed in the hydraulic pressure supply system of the hydraulic cylinders 16, 16.

Further, a first chamfering roller 11 described below is arranged on the front surface 3a of the fixed frame 3, and a second chamfering roller 12 described below is arranged on the front surface 4a of the movable frame 4. That is, this first chamfering roller 1
As shown in FIGS. 1 and 2, the first chamfering roller 12 and the second chamfering roller 12 are constituted by rollers with a flange having the same diameter, and are located at the same position in the conveying direction of the front surfaces 3a and 4a (that is, upper and lower sides). It is supported by the roller shafts 31 and 32 which are arranged in a protruding state to the front at a position (overlapping position in the direction). Of the chamfering rollers 11 and 12, only the first chamfering roller 11 is rotationally driven by the motor 8 in both forward and reverse directions, and the second chamfering roller 12 is free to move.

As shown in FIG. 5, the respective chamfering rollers 11 and 12 have their peripheral surfaces pressed against the pressing surface 1 in the plate thickness direction.
1a and 12a, and the side walls of the flange portions are plate width direction pressing surfaces 11b and 12b, respectively, and the corner portions where the plate thickness direction pressing surfaces 11a and 12a and the plate width direction pressing surfaces 11b and 12b are continuous are respectively formed. The forming parts 11c and 12c having a predetermined curvature are used. Then, between the first chamfering roller 11 and the second chamfering roller 12,
The plate width direction pressing surfaces 11b and 12b are located at the same position in the roller axial direction, and the plate thickness direction pressing surfaces 11a and 12b are arranged.
The mounting positions of a are relatively set so as to face each other in parallel at a predetermined interval, but the interval between the plate thickness direction pressing surfaces 11a and 12a is increased or decreased as the movable frame 4 moves up and down. I am supposed to get it.

Further, straightening rollers 25, 25 are attached to the left and right sides of the fixed frame 3, respectively. The correction rollers 25, 25 are the pressing surfaces 1 in the plate width direction of the first chamfering roller 11 and the second chamfering roller 12, respectively.
This is for restricting the deformation of the cutting material P to the one cutting surface Pa side by contacting and rolling on one cutting surface Pa of the cutting material P pressed to the 1b and 12b sides. ,
A direction orthogonal to the cutting material conveying direction (that is, the roller axis direction) by screwing the adjusting bolts 29, 29, respectively.
The amount of advance / retreat is adjustable. Further, the plate width direction pressing surfaces of the chamfering rollers 11 and 12 are always on a straight line connecting the front ends of the peripheral surfaces of the straightening rollers 25 and 25 (that is, the contact surface of the cutting material P to the cutting surface Pa). 11
b, 12b so that the chamfering rollers 11, 1 are positioned
The amount of advance / retreat is set corresponding to the positions of the plate width direction pressing surfaces 11b and 12b of No. 2.

Further, at the left and right sides of the front surface 3a of the fixed frame 3, the receiving rollers 26, 26 are rotatably attached so as to project forward. And
The mounting height of each of the receiving rollers 26, 26 is the same as the uppermost surface of each of the receiving rollers 26, 26 and the first chamfering roller 1.
It is set corresponding to the mounting position of the first chamfering roller 11 so that the uppermost surface of the first pressing surface 11a in the plate thickness direction is at the same height.

The second roller supporting unit 2 second roller supporting unit 2, as shown in FIGS. 1, 2 and 4, the front surface 5a to the front surface 3a of the fixed frame 3 of the first roller supporting unit 1 side On the other hand, a fixed frame 5 fixedly arranged on the floor surface G in a state of being opposed to each other at a predetermined interval, and a pair of left and right arranged in front of the front surface 5a of the fixed frame 5 and provided on the fixed frame 5 side. The first movable frame 6 which is movable in the forward / backward direction (arrow F-R direction) by the guide shafts 23, 23, and the left and right sides of the first movable frame 6 which are arranged above the first movable frame 6. By a pair of left and right guide shafts 22, 22 provided on both sides, a vertical direction (arrow U-
The second movable frame 7 that can be moved up and down in the D direction) is provided. The first movable frame 6 is driven forward and backward with respect to the fixed frame 5 by the expansion and contraction of the hydraulic cylinder 18, and the second movable frame 7 is moved up and down by the expansion and contraction of the pair of left and right hydraulic cylinders 17, 17. It has become so. Therefore, when the hydraulic cylinder 18 is used to drive the first movable frame 6 forward and backward, the second movable frame 7 also moves forward and backward integrally with the first movable frame 6. An accumulator (not shown) is provided in the hydraulic pressure supply system of the hydraulic cylinders 18 and the hydraulic cylinders 17, 17 as in the case of the first chamfering roller 11 side. The forward / backward positions of the first movable frame 6 and the second movable frame 7 are constantly monitored by a position detector (not shown) such as an encoder, and the expansion / contraction control of the hydraulic cylinder 18 is performed based on the output of the encoder. .

Further, the front surface 6 of the first movable frame 6 is
The third chamfering roller 13 and the fourth chamfering roller 14 are attached to a and the front surface 7a of the second movable frame 7 via roller shafts 33 and 34, respectively. Of the pair of upper and lower chamfering rollers 13, 14, the fourth chamfering roller 1
Only 4 is rotationally driven in both forward and reverse directions by the motor 9, and the third chamfering roller 13 is in a floating state. And
The mounting positions of the chamfering rollers 13 and 14 are set so as to be coaxial with the chamfering rollers 11 and 12 of the first roller support unit 1 side.

The specific structure of the third chamfering roller 13 and the fourth chamfering roller 14 is the same as that of each of the chamfering rollers 11 and 12 on the side of the first roller supporting unit 1, and therefore the description thereof is omitted. Further, the straightening rollers 25, 25 are arranged on the left and right sides of the first movable frame 6, respectively. The structure and function of the straightening rollers 25, 25 are the same as those of the straightening rollers 25, 25 on the first roller supporting unit 1 side. Therefore, the description thereof will be omitted.

Further, the front surface 6 of the first movable frame 6
At a, receiving rollers 27, 27 having the same structure as the receiving rollers 26, 26 on the first roller supporting unit 1 side are provided. The receiving rollers 27, 27 are the receiving rollers 26, 26 on the first roller supporting unit 1 side.
At the same height as the receiving rollers 26, 26
The mounting positions are set so that they are located inward in the horizontal direction. The lengths of the receiving rollers 26, 26 and the receiving rollers 27, 27 are the same as those of the first movable frame 6 and the second movable frame 7 of the first roller support unit 1 and the second roller support unit 2, respectively. In the closest state (the state shown in FIG. 1) do not interfere with the opposing frames, and in the state in which they are the farthest away (see the state shown in FIG. 6), there is at least a superposed portion between them. It is properly set to exist.

Other Configurations As shown in FIG. 6, the conveying devices Q arranged on the left and right sides of the chamfering device Z respectively convey (cut forward) the cutting material P forward in the conveying direction (direction shown by an arrow in the figure). It has a structure in which it is possible to reversibly perform (conveyance) and backward conveyance (reverse conveyance).
Controlled based on the outputs of ~ 43.

Further, between the first roller support unit 1 and the second roller support unit 2 of the chamfering device Z, a predetermined distance from the axial line L ₀ of each of the chamfering rollers 11 to 14 is located in the forward direction. Position the first position sensor 41
However, a second position sensor 42 is provided at a predetermined distance from the axis L _{0 in the} carrying direction, and a second position sensor 42 is provided at the third position at a position spaced forward from the chamfering device Z by a predetermined distance. The sensor 43 is arranged. Each of these position sensors 41 to 43 is composed of, for example, a photoelectric tube switch, a limit switch, etc., and these cooperate with each other to control the operations of the chamfering device Z and the conveying device Q as described later.

[Description of Operation of Chamfering Work] Subsequently, the cutting material P is actually used by using the chamfering device Z configured as described above.
The operation when the chamfering process is performed will be described with reference to FIGS. 6 and 7.

When the chamfering work is started, first, the chamfering rollers 11 and 12 on the first roller support unit 1 side and the second roller support unit 2 side according to the plate width of the cutting material P to be processed. The width of separation between the chamfering rollers 13 and 14 (that is, the initial distance before the start of chamfering) is set (see step S1 in FIG. 7).

The separation width is a separation width preset for each plate width of the target cutting material P and stored in a controller (not shown). Specifically, the separation width is, for example, a facing chamfering roller such as the first chamfering roller. Chamfering roller 11 and third chamfering roller 1
3, the interval between the plate width direction pressing faces 11b and 13b is larger than the plate width of the target cutting material P, and the chamfering rollers 11 and 1
It has such a size that both width direction end portions of the target cutting material P can be supported by the plate thickness direction pressing surfaces 11a and 13a of 3 and is set by feedback control based on the output of the encoder.

When the setting of the separation width of the chamfering roller is completed, as shown in FIG. 6, the conveying device Q advances and conveys the cutting material P and carries it into the chamfering device Z side (see step S2 in FIG. 7). Then, the cutting material P moves forward to
As shown in (a), when the position of the first position sensor 41 is reached, the first position sensor 41 operates, and a timer is set by receiving the operation signal, and the operation of the first position sensor 41. After that, the forward transportation of the transportation device Q is temporarily stopped when a predetermined time elapses. Therefore, when the forward conveyance of the cutting material P is stopped, as shown in FIG. 6B, the front end surface PA of the cutting material P has the first position sensor 4
It projects forward from the position 1 by a predetermined dimension (a).

Next, as shown in step S4 of FIG.
Between the chamfering rollers on the movable side, that is, the chamfering rollers 13 and 14 on the second roller support unit 2 side are horizontally moved forward so that the cutting material P opposes in the plate width direction between the pressing faces of the chamfering rollers. That is, between the plate width direction pressing surface 11b of the first chamfering roller 11 and the plate width direction pressing surface 13b of the third chamfering roller 13, and the plate width direction pressing surface 12b of the second chamfering roller 12 and the fourth chamfering roller 14. The plate width direction pressing surfaces 14b are pressed in the plate width direction. Further, subsequently to this, as shown in step S5 of FIG. 7, the second chamfering roller 12 and the second chamfering roller 12 of the first roller support unit 1 are connected.
The fourth chamfering roller 14 of the roller support unit 2 is lowered to place the cutting material P between the pressing faces of the chamfering rollers which face each other in the plate thickness direction, that is, the pressing face 11a of the first chamfering roller 11 in the plate thickness direction. And the pressing surface 12a of the second chamfering roller 12 in the thickness direction, and between the pressing surface 13a of the third chamfering roller 13 in the thickness direction and the pressing surface 14a of the fourth chamfering roller 14 in the thickness direction. To do.

In this way, when the cutting material P is pressed in both the plate width direction and the plate thickness direction, as a result, each chamfering roller 1
Each of the molding portions 11c, 12c, 13c, 14c of 1 to 14 is pressed against each ridge line portion Pd of the cutting material P, and the pressing portion is formed by the molding portions 11c, 12c, 13c, 1 as shown in FIG.
It is rolled and deformed into an arc shape along the shape of 4c. The point where the chamfering roller is first pressed is hereinafter referred to as an initial pressing point. In addition, this initial pressing point is shown in FIGS.
Is indicated by a chain line L ₁ .

The pressing force in this case is initially set to a predetermined force by adjusting the hydraulic pressure supplied to each hydraulic cylinder.

Next, as shown in step S6 of FIG.
The chamfering rollers 11 to 14 are reversed to move the cutting material P backward while being pressed by the chamfering rollers 11 to 14. By the backward drive of the cutting material P, the ridgeline portions Pd, Pd, ... Between the initial pressing point L _{1 of the} cutting material P and the front end surface PA are sequentially subjected to a rolling action to be chamfered in an arc shape. Done. The backward movement of the cutting material P is performed by the chamfering rollers 11 to 14 while the cutting material P is being pressed by the chamfering rollers 11 to 14, and the cutting material P is moved to the chamfering rollers 11 to 11. After being separated from 14, the transfer is performed by the transfer device Q. And this cutting material P
In the reverse drive, as shown in step S7 of FIG. 7 and FIG. 6C, the front end surface PA of the cutting material P is the second position sensor 42.
It will be stopped when it reaches. After stopping the cutting material P, FIG.
As shown in step S8, the third position sensor 43 confirms whether the preceding cutting material P'has been carried out from the chamfering device Z by a predetermined amount or more.

When it is confirmed that the preceding cutting material P'has been carried out, the chamfering rollers 11 to 14 are released (that is, opened) from the chamfering rollers 11 to 14 and the cutting material P is advanced by the conveying device Q again. When the tip surface PA of the cutting material P is conveyed and reaches the position of the first position sensor 41, the cutting material P is temporarily stopped (see steps S9 and S10 in FIG. 7). This cutting material P
6D, the pressing point L ₂ of each of the chamfering rollers 11 to 14 is located closer to the front end surface PA than the initial pressing point L ₁ by a predetermined amount, as shown in FIG. 6D. .

Here, as shown in step 11 and step S12 of FIG. 7, the chamfering rollers 11 to 14 are pressed to press the cutting material P in the plate width direction and the plate thickness direction, and the forming parts 11c thereof. , 12c, 13c, 14c cutting material P
Abutting against the ridge line portion Pd. In this case, the pressing position of each of the chamfering rollers 11 to 14 is a portion where chamfering has already been completed. Therefore, from this state, each chamfering roller 1
When the cutting material P is moved forward by driving 1 to 14 in the normal direction (Fig. 7).
Step S13) of the cutting material P,
Each ridge line portion Pd, Pd, on the front side from the initial pressing point L ₁
.. are chamfered in an arc shape, and when the rear end of the cutting material P passes through the chamfering rollers 11 to 14, chamfering of all the ridge line portions Pd, Pd ,. The completion of this chamfering is confirmed by the rear end of the cutting material P passing through the first position sensor 41 (step S14 in FIG. 7).
Therefore, after the completion of chamfering is confirmed, the cutting material P is directly conveyed by the conveying device Q and the chamfering rollers 11 to 14 are opened to prepare for the next chamfering work (step S15 in FIG. 7). .

With the above, one cycle of the chamfering work is completed.

As described above, according to the chamfering process using the chamfering device Z of this embodiment, the ridgeline portions Pd, Pd, ... Are surely secured over the entire length from the front end to the rear end of the cutting material P. The chamfering can be performed, and it is possible to reliably prevent the chamfering from being left unremoved, and a more reliable chamfering process is realized.

Further, when the cutting material P is advanced as described above and chamfering is performed on each ridge line portion Pd, Pd, ... Of the cutting material P by each chamfering roller 11-14, the above-mentioned straightening rollers 25, 25, ····································································································································································· To do. Therefore, even if the cutting material P has a property of being deformed in the plate width direction by being subjected to the rolling forming force of each of the chamfering rollers 11 to 14 depending on the conditions such as the rolling direction at the time of manufacture. Since the correction rollers 25, 25, ... Regulate the deformation in the plate width direction, the cut material P as a product after the completion of chamfering has high accuracy without deformation in the plate width direction. Become. Therefore, as a synergistic effect of the absence of deformation in the plate width direction and the absence of chamfering as described above, the reliability and commercial value of the cutting material P as a product are enhanced.

In this embodiment, the first movable frame 6 and the second movable frame 6 of the second roller support unit 2 are used.
Since the hydraulic supply system of the hydraulic cylinder 18 for moving the movable frame 7 forward and backward is provided with an accumulator so as to constantly apply a predetermined pressing force to the cutting material P, for example, the cutting surface Pa has one of them due to defective cutting work. Even when the section is curved or the parallelism between the two cutting surfaces Pa, Pa is poor, the chamfering rollers 11 to 14 follow the changes in the respective cutting surfaces Pa, Pa, and the cutting surfaces Pa, Pa, Chamfering can be performed by reliably contacting Pa with a predetermined pressing force, and the reliability of the work can be further improved.

Further, in this embodiment, the "double-sided chamfering" in which the chamfered surfaces Pa, Pa on both sides of the cutting material P are simultaneously chamfered has been described, but the present invention is not limited to this and, for example, the cutting is performed. Of course, the present invention can be applied to "single chamfering" in which chamfering is performed only on one cut surface Pa of the material P.

Further, in this embodiment, of the chamfering rollers 11 to 14, only the first chamfering roller 11 and the fourth chamfering roller 14 are driven, but the present invention is not limited to this. However, the position and number of chamfering rollers to be driven can be appropriately selected.

[Brief description of drawings]

FIG. 1 is a plan view of a chamfering device according to an embodiment of the present invention.

2 is a II-II enlarged arrow view of FIG. 1. FIG.

FIG. 3 is a view on arrow III-III in FIG.

4 is a view taken along the line IV-IV in FIG.

FIG. 5 is an explanatory diagram of a chamfered state by a chamfering roller.

FIG. 6 is an explanatory diagram of a work procedure of a chamfering process using the chamfering device shown in FIG. 1.

FIG. 7 is a flowchart showing a work procedure for chamfering.

FIG. 8 is a perspective view showing a cut material before chamfering.

FIG. 9 is a perspective view showing a cut material after chamfering.

[Explanation of symbols]

1 is a first roller support unit, 2 is a second roller support unit, 3 is a fixed frame, 4 is a movable frame, 5 is a fixed frame, 6 is a first movable frame, 7 is a second movable frame, 8 is a motor, 9 Is a motor, 11 is a first chamfering roller, 12 is a second chamfering roller, 13 is a third chamfering roller, 14 is a fourth chamfering roller, 16-18 are hydraulic cylinders, 21-23 are guide shafts, 25 is a straightening roller,
26 and 27 are receiving rollers, 29 is an adjusting bolt,
31 to 34 are roller shafts, 41 to 43 are position sensors, P is a cutting material, Q is a conveying device, and Z is a chamfering device.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kunio Uehara 1350 A, Ko, Bushoyama-cho, Takamatsu City, Kagawa Stock Company Uehara Works

Claims (2)

[Claims] 1. A forming portion of a chamfering roller having an arc-shaped or inclined surface-shaped forming portion on its outer peripheral portion is pressed against a ridge line portion of a cut surface of a cut material obtained by cutting a metal plate material into a strip shape. When the chamfering roller is rotated in such a state that the ridge line portion is continuously rolled and deformed so that chamfering is performed in the shape of an arc surface or an inclined surface, the tip of the cutting material is forward of the chamfering roller in the conveying direction. After advancing to a position projecting by a predetermined amount and stopping this, the forming portion of the chamfering roller is pressed against the ridge line portion of the cutting material, and in this state, the chamfering roller is reversed to perform the cutting. While moving the material backward, chamfer the portion from the initial pressing point where the chamfering roller abuts to the tip of the ridge, and once the chamfering to the tip is completed, stop the chamfering roller once. The cutting material is stopped and the pressing force on the cutting material is released, and then the cutting material is advanced again to move the cutting material at a point when the initial pressing point is located on the front side in the transport direction by a predetermined amount from the chamfering roller. After stopping, the chamfering roller is pressed again against the ridgeline portion of the cut material, and in this state, the chamfering roller is rotated in the forward direction to remove the portion of the ridgeline portion of the cut material from the initial pressing point to the rear end. A method for chamfering a cutting material, wherein chamfering is performed, and at the same time, correction rollers arranged on both front and rear sides of the chamfering roller restrict deformation of the cutting material in a plate width direction. 2. A transport means for sequentially transporting a cut material obtained by cutting a metal plate material into a strip shape in the longitudinal direction thereof, and a plate thickness direction pressing surface abutting the plate thickness direction surface of the cut material on the outer peripheral portion thereof. A plate width direction pressing surface that abuts a cutting surface positioned in the width direction, and an arc surface-shaped or inclined surface-shaped cross-section forming portion that abuts a ridge line portion that is located in a continuous portion of the plate thickness direction surface and the cutting surface. And a press for pressing the chamfering roller arranged in the middle of the conveyance of the conveying means and the plate thickness direction pressing surface and the plate width direction pressing surface of the chamfering roller against the plate thickness direction surface and the cutting surface of the cutting material. A chamfering roller having a contact surface capable of abutting the cutting surface of the cutting material, and a plurality of straightening rollers respectively arranged at both front and rear positions of the chamfering roller in the cutting material conveying direction. In the pressed state of the cutting material by The plate width direction pressing surface of the chamfering roller and the abutting surfaces of the respective correction rollers located before and after the chamfering roller are positioned on the same straight line parallel to the conveying direction. Chamfering device.