JP3163348B2 - Shaped steel processing machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a section steel processing machine.

[0002]

2. Description of the Related Art With reference to FIG. 6, work holding and processing by a conventional section steel processing machine will be described. First, when started (Step SS), a shaped steel is supplied to the material feeding device, and the tail end of the shaped steel is gripped by the clamper of the carriage (Step S101). The carriage is advanced to feed the shaped steel by a predetermined length (step S102).

Subsequently, when the positioning of the shaped steel is completed, the shaped steel is pressed by the shaped steel gripping means for punching (step S103), and punching is performed (step S10).
4). When the punching is completed, the section steel is unclamped (step S105). The material is fed by a necessary length by the advance of the carriage (step S106), and it is determined whether to perform punching (step S107). If punching is to be continued, the process returns to step S103 and repeats the above steps. .

[0004] On the other hand, when the punching is completed, the section steel is pressed by the section steel gripping means for cutting (step S108), and the cutting is performed (step S109).

[0005] The section steel W is processed by repeating the above procedure.

[0006]

However, in such a conventional technique, in the case of punching, the shaped steel is pressed by the shaped steel gripping means for punching, and in the case of cutting, the cutting is performed. Processing is performed while holding the section steel by means of the section steel gripping means.

For this reason, when the carriage is advanced and the carriage comes forward in the material feeding direction relative to the punching section steel gripping means, it becomes impossible to use the punching section steel gripping means. Normally, it can move only up to the shape steel gripping means for punching, and there is a problem that a large amount of waste material is generated because long residual material is generated.

[0008] In addition, when the shaped steel is long, there is a problem that when performing the punching process, it becomes unstable only by pressing by the shaped steel gripping means for the punching process.

[0009]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems. The present invention provides a processing machine main body for processing a shaped steel, and a shape steel loaded into the processing machine main body. And a NC unit for controlling the above-mentioned processing machine main body and the material feeding apparatus, wherein the main body of the processing machine performs a punching process on the cutting unit for cutting the shape steel and the shape steel. And a first shaped steel gripping means for holding the shaped steel at the time of cutting the shaped steel, and a second shaped steel gripping means for holding the shaped steel at the time of punching. The apparatus is provided with a carriage having a clamper capable of gripping the shaped steel so as to be movable and positionable, and is provided with position detecting means for detecting the positions of the tip and the tail end of the shaped steel. The position of the from the position of the carriage section steel tail when it is detected by means to input to the NC device, the position of the carriage is made of a structure for managing by the NC device.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the drawings.

Referring to FIG. 3 and FIG. 4, a section machine 1 for punching or cutting an angle material, for example, an angle material, comprises a machine body 3 for machining section steel W and this machining section. There is a material feeding device 5 for carrying the shaped steel W into the machine body 3. The processing machine body 3 and the material feeding device 5 are both controlled by an NC device 7 which is a control unit.

A cutting unit 9 for cutting the shaped steel W is provided on the left side in FIGS. 3 and 4 of the processing machine main body 3, and on the right side of the cutting unit 9 in the drawing, the shaped steel W for cutting is formed. A hold-down 11 is provided as a front section holding means for holding the W. The holddown 11 is provided between the cutting unit 9 and the punching unit, as is clear from FIGS.

A pair of left and right punching units 13 for punching the section steel W is provided at the center of the processing machine body 3.
L and 13R are provided, and a fixed gripper 15 is provided at a position close to the right side of the punching units 13L and 13R in FIG. . A tip detection sensor 17 for detecting the tip KH of the section steel W is provided on the right side surface of the fixed gripper 15 in the drawing.

The material feeding device 5 is provided with a transfer table 19, and the transfer table 19 is rotatably provided with a material feed roller 21 for carrying the shaped steel W into the processing machine body 3. Further, the transporting table 19 is provided in the material feeding device 5.
A guide rail 23 is provided along the guide rail 23, and a carriage 27 is provided on the guide rail 23, which can be moved and positioned by a traveling motor 25.

The carriage 27 is provided with a clamper 29 for holding the section steel W, and the section steel W is held by a clamper cylinder 31. Although not shown, the position of the carriage 27 is, for example, a rotary encoder mounted on the traveling motor 25,
A linear scale or the like provided along the guide rail 23 always detects accurately and is managed by the NC device 7.

Accordingly, from the position of the carriage 27 when the tip KH of the section steel W is detected by the tip detection sensor 17, the length of the section steel W and the position of the tail end KB are input to the NC device 7.

FIG. 5 shows a hydraulic circuit for performing cutting and punching and operating the above-mentioned hold-down 11 and fixed gripper 15.

Referring to FIG. 5, the hydraulic circuit includes a cut cylinder 33 for the cutting unit 9, left and right punching cylinders 35L and 35R for the punching units 13L and 13R, a clamper cylinder 31 for the carriage 27, It drives the cylinder 37 for fixed use and the cylinder 39 for fixed gripper. Also,
If necessary, a gripping means such as a flat bar fixing gripper 41 may be further provided.

In such a hydraulic circuit, the hydraulic motor 43
And a high-pressure pump 47 of, for example, about 200 kgf / cm 2 and a low-pressure pump 49 of, for example, about 70 kgf / cm 2. Accordingly, high pressure is obtained by supplying hydraulic oil from the tank T using the high hydraulic pump 47 by driving the hydraulic motor 43, and low pressure is obtained by supplying hydraulic oil from the tank T using the low hydraulic pump 49. can get.

That is, solenoid valves 51 and 53 are required for those requiring strong processing pressure, such as the cut cylinder 33 and the left and right punching cylinders 35L and 35R.
The high-hydraulic pump 47 can be freely connected via L and 53R. In addition, pumps that do not require a strong force, such as the clamper cylinder 31 of the carriage 27, the fixed gripper cylinder 39, and the flat bar fixed gripper 41, are provided with low hydraulic pumps through the solenoid valves 55, 57, and 59. 49 is freely connectable.

On the other hand, the hold-down cylinder 37 is
High pressure is required to press the shaped steel W with a strong force during cutting, but low pressure is sufficient because simply stopping the movement of the shaped steel W is sufficient during punching and when grasping the shaped steel W. For this reason, the hold-down cylinder 37 is selectively connected to the high hydraulic pump 47 and the low hydraulic pump 49 via the solenoid valve 61 and the pressure switching valve 63.

Next, the procedure of the work holding method in the section steel working machine 1 according to the present invention will be described with reference to the flowchart shown in FIG.

Processing of the section steel W is started (step S
S), preparation for processing is performed (step S1). When the preparation for machining is completed, the tip KH and the tail KB of the section steel W are detected as described above (step S2). It is determined whether or not automatic operation is possible (step S3). If automatic operation is not possible, machining is completed (step SE).

On the other hand, if the automatic operation is possible, the carriage 27 is moved forward and positioned (step S4). The positions of the front end KH and the tail end KB of the section steel W during the processing are always managed by the NC device 7.

The NC unit 7 determines whether or not the tip KH of the section steel W is in front of the holddown 11 as the front section steel gripping means (in front of the material feeding direction, left direction in FIGS. 3 and 4). Is determined (step S5). Tip KH is hold down 1
If it has not reached 1 (the state shown in FIG. 2A), the fixed gripper 15 is operated to clamp the section steel W (step S6), and punching is performed (step S7).
Thereafter, the process returns to step S4 to execute the subsequent steps.

On the other hand, if the tip KH of the section steel W is ahead of the hold down 11, it is determined whether the tail end KB of the section steel W is ahead of the fixed gripper 15 (step S8). If it is forward (the state shown in FIG. 2B), the hold-down cylinder 37 is connected to the low hydraulic pump 49 by the above-mentioned pressure switching valve 63 to clamp the section steel W at low pressure (step S9). .

When the leading end KH is ahead of the hold down 11 but the tail end KB has not reached the fixed gripper 15 (the state shown in FIG. 2C), both the fixed gripper 15 and the hold down 11 are used. Then, clamping is performed at a low pressure in the same manner as described above (step S10).

Next, it is determined whether or not cutting is performed (step S11). If not, punching is performed (step S12). In the case of punching, since a strong force is not required for the holddown 11, the holddown cylinder 37 is connected to the low hydraulic pump 49.

On the other hand, in the case of cutting, it is necessary for the holddown 11 to press the section steel W with a strong force, so that the holddown cylinder 37 is switched to the high hydraulic pump 47 by the pressure switching valve 63 (step S13). )
Cutting is performed with the section steel W clamped (step S14).

It is determined whether or not the machining has been completed (step S15). If the machining is to be continued, the process returns to step 4 and the subsequent steps are executed. If the processing is not continued, the processing is completed (step SE).

As described above, the carriage 27 for gripping the tail end KB of the section steel W is located forward (see FIG. 3 and FIG. 4) of the fixed gripper 15 provided in front of the machine body 3 (right side in FIGS. 3 and 4). 3 and the left side in FIG. 4), and the fixed gripper 15 and the holddown 11 are used in accordance with the positions of the tip KH and the tail end KB of the shaped steel W. It becomes possible to process to the vicinity of the tail end KB. Thereby, the remaining material can be shortened.

Further, by using both the fixed gripper 15 and the hold-down 11 at the time of punching, the machining can be stably performed even when the section steel W is long.

Further, since the hold-down cylinder 37 is operated at a low pressure during the punching process, the load of the hydraulic pressure can be reduced and noise can be suppressed.

The present invention is not limited to the above-described embodiment, but can be embodied in other modes by making appropriate changes. For example, in the above embodiment, the management of the tip KH position of the section steel W is performed by NC.
Although the operation is performed by the program in the device 7, the same operation and effect can be obtained by providing a sensor on the front side of the fixed gripper 15 and the front side of the hold down 11 for detection.

In the above-described hydraulic circuit, the dual pump 45 is used, but a single pump may be used for the dual pressure control.

[0036]

As will be understood from the above description, according to the present invention, the shape steel is selectively gripped by the positional relation between the tip position and the tail end position of the conveyed shape steel and the shape steel gripping means. Means can be used, and the section steel can be properly pressed according to the processing state.

[Brief description of the drawings]

FIG. 1 is a flowchart showing a procedure of a work holding method and a working method in a die steel working machine according to the present invention.

FIG. 2 is an explanatory view showing a positional relationship between a tip and a tail end of a shaped steel and a shaped steel gripping means.

FIG. 3 is a plan view showing an entire section steel working machine.

FIG. 4 is a side view showing the whole section steel working machine.

FIG. 5 is a circuit diagram showing a hydraulic circuit of the section steel working machine.

FIG. 6 is a flowchart showing a procedure of a work holding method and a working method in a conventional die steel working machine.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Section steel processing machine 3 Processing machine main body 7 NC apparatus (control part) 9 Cutting unit 11 Hold down (front section steel gripping means) 13L, 13R Punching unit 15 Fixed gripper (front side section steel gripping means) 17 Tip detection Sensor (Position detecting means) 21 Feeding device 47 High oil pressure pump (high oil pressure circuit) 49 Low oil pressure pump (low oil pressure circuit) W-shaped steel

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B23B 23/02 B23B 23/04 B23D 33/00

Claims (1)

(57) [Claims] 1. A processing machine main body (3) for processing a shape steel (W), a material feeding device (5) for carrying the shape steel (W) into the processing machine main body (3), and the processing machine main body (3) and an NC device (7) for controlling a material feeding device (5), wherein the machine body (3) is a shaped steel (W)
A cutting unit (9) for cutting the shape steel (W) and a punching unit for punching the shape steel (W), and a first shape for holding the shape steel (W) at the time of cutting the shape steel (W). A carriage provided with a steel gripping means and a second shaped steel gripping means for pressing the shaped steel (W) at the time of punching, wherein the material feeding device (5) includes a clamper (29) capable of gripping the shaped steel (W); (27) is provided so as to be movable and positionable, and is provided with position detecting means for detecting the positions of the tip and the tail end of the shaped steel (W), and the tip (KH) of the shaped steel (W) is moved by the position detecting means. The position of the tail end (KB) of the section steel (W) is input to the NC device (27) from the position of the carriage (27) when detected, and the position of the carriage (27) is input to the NC device (7). Managed by Shaped steel machine characterized by comprising a structure that.