JPH0929521A - Underside supporting device for shape steel drilling machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an underside supporting device for a shape steel drilling machine capable of surely supporting the material from the underside over the whole working range by a drilling head even when a work is warped in the longitudinal direction with a relatively simple constitution in a drilling machine of the system where the drilling head is moved in the two-dimensional direction. SOLUTION: An underside supporting device for a shape drilling machine is provided with a body part 2 to which the displacement in the transverse direction of a shape is given by a transverse moving mechanism 3, an underside supporting plate 4 in which the length of a shape in its longitudinal direction is at least the length of the working range by a drilling head 15 in the longitudinal direction of the shape, and a vertical starting/stopping mechanism 5 which is provided on the body part 2, tiltably supports the underside supporting plate 4 in the longitudinal direction of the shape to move the plate in the vertical direction as a whole, and fixes the plate in the condition where the upper surface of the underside supporting plate 4 is abutted along the supported surface of the shape.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lower support device attached to a shape-steel punching machine, and more specifically, when punching a web or the like of H-section steel, a shape to be punched in order to prevent bending of a processed portion. It relates to a device for supporting steel from its underside.

[0002]

2. Description of the Related Art Conventionally, as a drilling machine for drilling shaped steels such as H-shaped steels, a pair of left and right drilling which gives a horizontal feed to the drill in order to drill left and right flanges of the H-shaped steel. A punching machine is known which is provided with a total of three drilling heads, a head and a drilling head which vertically feeds the drill to punch a web of H-section steel.

In such a shaped steel punching machine, conventionally, there are roughly two types of drilling methods by each drilling head. One of them is that, as shown in FIG. 5 by pulling out a perforating head D for perforating a web, the perforating head D is movable only in the transverse direction of the shaped steel, and the positioning in the longitudinal direction of the shaped steel is performed by extending the shaped steel longitudinally. As shown in FIG. 6, the piercing head D is movable not only in the transverse direction of the shaped steel but also in the longitudinal direction by a predetermined distance, and the vice mechanism is used. This is a method in which a group of holes having a two-dimensional pattern is processed only by moving the drilling head D while the shaped steel is clamped and fixed by.

By the way, when a web of H-section steel or the like is punched by a punching head (hereinafter referred to as an upper punching head) which is provided with a vertical cut, the material is bent by the cutting feed of the punching head. It is necessary to support the material from below the point. As a supporting device for such a material, Japanese Utility Model Laid-Open No. 4-76383 discloses a device applied to a system in which a drilling head moves only in the transverse direction of a shaped steel shown in FIG. This is to arrange the abutting pin below the shaped steel that is clamped and fixed by the vise mechanism, and to move the abutting pin following the movement of the upper drilling head in the transverse direction of the shaped steel. The device is a device for constantly supporting the vicinity of the drilled portion by the upper drilling head from the lower surface thereof with a butting pin.

[0005]

When the technique described in the above publication is adopted in the punching machine shown in FIG. 6 in which the punching head moves in the two-dimensional direction, in order to follow the position of the punching head, However, the abutting pin needs to be movable in the longitudinal direction of the shaped steel in addition to the transverse direction of the shaped steel, which has a drawback that the structure becomes complicated.

Therefore, in the conventional punching machine in which the punching head moves in the two-dimensional direction, as shown in FIG.
Two lower support members S1 and S2 that can move up and down outside the both ends of the machining range in the longitudinal direction of the shaped steel by the upper drilling head.
Is provided so that a wooden square C or the like is placed between them, and the square C supports the lower surface of the material for a predetermined length, which has been put into practical use. However, depending on this method, as illustrated in FIG. 8, when the material to be processed is warped in the longitudinal direction, there is a drawback that the material cannot be sufficiently supported over the entire processing range by the upper drilling head.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a punching machine of a type in which a punching head moves in a two-dimensional direction with a relatively simple structure. An object of the present invention is to provide a bottom support device for a shaped steel punching machine that can reliably support the material over the entire processing range of the upper drilling head even if the workpiece is warped in the longitudinal direction.

[0008]

In order to achieve the above object, a supporting device for a shaped steel punching machine according to the present invention comprises a lateral movement mechanism 3 as shown in FIGS. The main body 2 to which a displacement in the transverse direction of the shaped steel is applied, and the lower support plate 4 having a length in the longitudinal direction of the shaped steel that is at least the length of the working range in the longitudinal direction of the shaped steel by the upper drilling head 15.
The lower support plate 4 is provided in the main body 2 and is vertically slantably supported in the longitudinal direction of the shaped steel to move up and down as a whole, and the upper surface of the lower support plate 4 is abutted along the supported surface of the shaped steel. It is characterized in that it is provided with a vertical movement / stopping mechanism 5 for fixing in a closed state.

Here, as a concrete mode of the vertical movement / stopping mechanism 5, one cylinder 5a for vertically swinging with respect to the main body 2 by swingably supporting the central portion of the lower support plate 4 is used.
And are respectively supported by the main body 2 so as to be slidable in the axial direction,
The lower support plate 4 may be composed of two vertical rods 5b and 5c that swingably support both ends of the lower support plate 4, and clamp devices 5d and 5e that clamp the vertical rods 5b and 5c to restrict the sliding. it can.

[0010]

When the upper punching head 15 punches the material, the lower support plate 4 is raised to support the vicinity of the punched portion of the material from below to prevent the material from being bent. Among the boring operations by the upper boring head that is movable in the dimensional direction, with respect to the movement of the upper boring head 15 in the transverse direction of the shaped steel, the lateral support mechanism 3 moves the lower support plate 4 together with the main body 2. On the other hand, the upper drilling head 15
With respect to the movement of the lower supporting plate 4 in the longitudinal direction of the shaped steel, it is necessary to move the lower supporting plate 4 because the length of the lower supporting plate 4 in the longitudinal direction of the shaped steel is equal to or more than the processing range of the upper drilling head 15 in the same direction. Absent. Then, even if the lower support plate 4 is supported so as to be tiltable in the longitudinal direction of the shaped steel, and the upper surface thereof is fixed in a state of abutting against the supported surface of the shaped steel, even if warped in the longitudinal direction of the shaped steel, As shown in FIG. 4, the lower support plate 4 is fixed in a state of following the warp of the material, and the upper punching head 15
The material can be reliably supported within the entire processing range.

[0011]

1 is a front view of a main portion of a shaped steel punching machine equipped with an embodiment of the present invention, and FIG. 2 is an upper punching head 1 thereof.
5 is a plan view showing a state in which 5 and its supporting members are removed. FIG.

A workpiece W, such as an H-shaped steel, is mounted on a base 10
While being supported by the upper and left roller groups 11 and 12, the two front and rear feeding main driving mechanisms 13a and 13b and the feeding sub-driven mechanisms 23a and 23b feed the sheet in the longitudinal direction. That is, each material feeding main driving mechanism 13a, 13b is provided with a drive roller d, and each material feeding driven mechanism 23a, 2b.
Each of the rollers 3b is provided with an idle roller i, and these two types of rollers are opposed to each other to form a pinch roller type feeding mechanism. By rotating the drive roller d while sandwiching the work material W between the drive roller d and the idle roller i, the work material W is fed in the longitudinal direction.

The left and right roller groups 11 and 12 are rotatably supported by support members 110 and 120, of which one support member 110 is fixed on the base 10.
The other support member 120 is a linear guide 20a, 20b provided on the base 10 along the transverse direction of the workpiece W.
The support member 120 is slidably supported on the upper side, and the support member 120 is appropriately moved according to the width (transverse direction) of the workpiece W. .

The base 10 has two feeding mechanisms 13a, 1a.
A gate-shaped frame 14 supported by four columns 14a to 14d is provided so as to straddle 3b, and an upper perforation head 15 provided with a vertical cutting feed is provided on the gate-shaped frame 14. A cross table 16 for moving the upper punching head 15 in the transverse direction and the longitudinal direction of the workpiece W is provided. In addition to the upper punching head 15, the punching machine is provided with left and right punching heads, such as left and right flanges of the H-shaped steel, that are horizontally fed with a cutting feed in order to punch both left and right side surfaces of the workpiece W. However, these are not shown in FIGS. 1 and 2 for simplification of description. Further, on the base 10, at positions that do not hinder the punching operation by these left and right punching heads, for example, on the surfaces of the front and rear material feeding driving mechanisms 13a and 13b and the material feeding driven mechanisms 23a and 23b that face each other, the workpieces to be processed are formed. Drive-side and driven-side vice mechanisms 13c, 13d, 23c, and 23d (driving section not shown) for sandwiching and fixing the material W are provided.

The lower support device 1 has a main body 2 slidably supported on the two linear guides 20a and 20b, and a direction along the linear guides 20a and 20b on the main body 2, that is, It is composed of a lateral movement mechanism 3 that gives a displacement of the workpiece W in the transverse direction, a lower support plate 4 supported by the main body 2 so as to be vertically movable, and a vertical movement / stop mechanism 5 of the lower support plate 4. The lower support plate 4 is a workpiece W
Has a concave cross section, and the length of the workpiece W in the longitudinal direction is equal to or slightly longer than the machining range L of the upper boring head 15 in the same direction. .

The lateral movement mechanism 3 of the main body 2 includes a screw shaft 3b screwed into a female screw 3a provided on the main body 2, a motor 3c for rotationally driving the screw shaft 3b, and a rotation of the screw shaft 3b. It is composed of an encoder 3d and the like for measuring the amount, and the main body 2 can be independently moved along the linear guides 20a and 20b by driving the motor 3c. The moving range of the main body 2 by the lateral moving mechanism 3 is equal to the working range of the upper punching head 15 in the transverse direction of the workpiece W. The lateral movement mechanism 3 is supplied with the same command as the displacement command of the upper punching head 15 in the transverse direction of the workpiece W from the control unit of the punching machine. That is, the main body 2 moves in the same direction as the upper drilling head 15 moves in the transverse direction of the workpiece W.

FIG. 3 is an overall configuration diagram of the undercarriage device, in which an AA enlarged sectional view in FIG. 2 and a driving hydraulic circuit diagram are shown together. The main body 2 includes one hydraulic cylinder 5a and two vertical rods 5b, 5 slidable in the axial direction.
c, and clamp devices 5d and 5e for restricting the sliding of these vertical rods 5b and 5c to bring them into a fixed state, by which vertical movement of the lower support plate 4
The stop mechanism 5 is configured.

The hydraulic cylinder 5a is vertically fixed to the main body 2 with the piston rod facing upward, and the central portion of the lower support plate 4 is swingable at the tip of the piston rod via a horizontal pin 50a. Is supported by. The vertical rods 5b and 5c sandwich the hydraulic cylinder 5a, and the workpiece W
Are provided at predetermined intervals in the longitudinal direction of the main support 2, and both end portions of the lower support plate 4 are swingably supported at their tip ends via horizontal pins 50b and 50c, and provided on the main body 2. It is slidably supported in the axial direction via bushes 2a and 2b, and also penetrates hydraulically driven clamp devices 5d and 5e. This clamp device 5
The d and 5e can press the vertical shafts 5b and 5c from their outer peripheral surfaces by supplying pressure oil, and can prevent the vertical shafts 5b and 5c from moving in the axial direction.

Pressure oil is supplied to / discharged from the above-mentioned hydraulic cylinder 5a through a closed center type 4-port 3-position directional control valve 51, and each of the clamp devices 2c, 2c.
Pressure oil is supplied to d through the direction control valve 52 and the booster 53 for increasing pressure. Direction control valves 51 and 52
Are driven and controlled in association with the punching operation by the control signals supplied from the control unit of the punching machine.

In the above embodiment of the present invention, when the upper perforating head 15 perforates a group of holes in a two-dimensional pattern in the web of H-shaped steel, for example, when the upper perforating head 15 moves in the transverse direction of the shaped steel, the movement thereof. Following this, the main body 2 moves, and a control signal is supplied to the directional control valve 51 to raise the hydraulic cylinder 5a immediately before the cutting of the upper drilling head 15 is started. As a result, the lower support plate 4 rises, but the lower support plate 4 is not supported by the hydraulic cylinder 5a and the vertical rods 5b, 5
Since it is rockably supported by c, it stops with its upper surface along the lower surface of the H-section steel web before long. In this state, a control signal is supplied to the directional control valves 51 and 52 to set the directional control valve 51 to the neutral position, and at the same time, pressure oil is supplied to the clamp devices 5d and 5e to bring them into a clamped state. As a result, as shown in FIG. 4, even if the H-section steel to be perforated is warped in the longitudinal direction, the lower support plate 4 is in the vertical direction with the entire upper surface thereof in contact with the lower surface of the web of the H-section steel. The displacement to is regulated. When the upper perforation head 15 is perforated by cutting feed in this state, no matter which position the upper perforation head 15 is in the longitudinal direction of the shaped steel, the lower support having a length equal to or longer than the processing range L in the same direction is formed. Since the lower surface of the web of the perforated portion is firmly supported by the lower support plate 4 by the plate 4, the web does not bend.

In the above embodiment, as the vertical movement / stopping mechanism 5 of the lower support plate 4, one hydraulic cylinder 5a,
A mechanism composed of two vertical rods 5b and 5c sandwiching this and these clamp devices 5d and 5e is adopted, but the present invention is not limited to this, and for example, two end portions of the lower support plate 4 are formed by two hydraulic cylinders. Is rotatably supported, and each hydraulic cylinder is driven and controlled by a closed center type directional control valve, and the directional control valve is set to the neutral position with the lower support plate 4 in full contact with the supported surface. It is possible to adopt a mechanism for setting the clamped state. However, in the case of the above-mentioned embodiment, there is no fear of sinking due to leakage of pressure oil as in the system directly supported by the hydraulic cylinder, and the mechanism is simplified, which is advantageous.

[0022]

As described above, according to the present invention,
A lower support plate having a length equal to or longer than the machining range of the upper drilling head in the longitudinal direction of the shaped steel is arranged on the main body part that follows the movement of the upper drilling head in the transverse direction of the shaped steel. Since the lower support plate is supported so as to be tiltable in the longitudinal direction of the shaped steel to move up and down as a whole, and is fixed while being abutted along the supported surface of the shaped steel,
Applicable to a drilling machine of the type in which the upper drilling head moves in both the transverse direction and the longitudinal direction of the shaped steel, and the base support device follows only the transverse direction of the shaped steel with respect to the two-dimensional movement of the drilling head. The mechanism is simple, and even if the shaped steel is warped, the lower support plate is fixed in a state of following the shaped steel and the drilling position can be reliably supported from below.

[Brief description of drawings]

FIG. 1 is a front view of a main part of a shaped steel punching machine equipped with an embodiment of the present invention.

FIG. 2 is a plan view of FIG. 1 showing a state in which an upper punching head 15 and its supporting members are removed.

FIG. 3 is an overall configuration diagram of a supporting device of an embodiment of the present invention, in which an AA enlarged cross-sectional view in FIG. 2 and a hydraulic circuit diagram for driving are shown together.

FIG. 4 is a diagram illustrating the operation of the embodiment of the present invention.

FIG. 5 is an explanatory view of a punching machine of a type in which a drilling head moves only in a transverse direction of a shaped steel.

FIG. 6 is an explanatory view of a punching machine of a type in which a drilling head moves in a transverse direction and a longitudinal direction of a shaped steel.

FIG. 7 is an explanatory view of a conventional under-supporting device in a punching machine of a type in which a drilling head moves in a transverse direction and a longitudinal direction of a shaped steel.

FIG. 8 is an explanatory diagram of a problem caused by the device of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Lower support device 2 Main body 3 Lateral movement mechanism 3a Female screw 3b Screw shaft 3c Motor 3d Encoder 4 Lower support plate 5 Vertical movement / stopping mechanism 5a Hydraulic cylinders 5b, 5c Vertical rods 5d, 5e Clamp device 51, 52 Directional control valve 10 Base 13a, 13b Material feed driving mechanism 13c, 13d Driving side vise mechanism 14 Gate frame 15 Upper punching head 16 Cross table 20a, 20b Straight guide 23a, 23b Material feeding driven mechanism 23c, 23d Driven side vise mechanism W Worked material

Claims (2)

[Claims] 1. A shaped steel in which a drill is provided with a vertical cutting feed and a drilling head movable in a transverse direction and a longitudinal direction of the shaped steel is arranged above the shaped steel supported on a base. In a punching machine, a device for supporting a web or the like of an H-shaped steel from the lower surface when punching a web or the like of an H-shaped steel by the punching head, and a main body part which is displaced in the transverse direction of the shaped steel by a lateral movement mechanism, A lower support plate having a length in the steel longitudinal direction at least as long as a machining range in the longitudinal direction of the shaped steel by the boring head and the main body portion, and the lower support plate is tiltable in the longitudinal direction of the shaped steel. And a vertical movement / stopping mechanism for fixing the upper surface of the lower support plate in a state of abutting it along the supported surface of the shaped steel. Supporting device for shaped steel punching machine. 2. The vertical movement / stopping mechanism supports one cylinder for swingably supporting the central portion of the lower support plate to move up and down with respect to the main body, and each cylinder is slidable in the axial direction. And two vertical rods that are rotatably supported by the lower support plate and swingably support both ends of the lower support plate, and a clamp device that clamps each vertical rod and restricts its sliding. An undersupport device for a shaped steel punch according to claim 1.