JPS58155109A - Automatic punching position detecting device of flat plate and shaped steel drilling machine - Google Patents

Abstract

PURPOSE:To detect automatic punching positions by setting detecting dogs by the numbers of drilling holes to the guide rail based upon the scale of a counter board. CONSTITUTION:The number of punching is indicated by a punch number selection data switch 45 respectively in the X-axis direction and Y-axis direction and, further, the priority of punching order by which punching is to be started in the X-axis direction or Y-axis direction is determined. These data are stored in the internal device of a control panel 5 which is a sequence controller. Next, the start button of a roll box 6 is pressed. A head part 3 stops at the initial position in the X-axis direction and Y-axis direction, but moves obliquely to the initial positions of detecting dogs 35a, 35b, stops at the punching position and starts punching operation.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic drilling position detection device for a drilling machine for flat plates and shaped steel (H-shaped steel, channel steel, ■-shaped steel, angle-shaped steel, etc.).

As a drilling position detection device for conventional automatic drilling machines,
There are systems using a numerical control system and systems using a photoelectric punch plate system, but when these systems are used, the equipment becomes very expensive and the operation is complicated and requires skill.

Furthermore, when using the photoelectric punch plate method, a copying punch plate must be created before the drilling operation, and storage of this punch plate is very troublesome.In addition, when using the copying punch plate or numerical control method If the storage tape is attached incorrectly to the workpiece, it has the disadvantage that the perforation of the product may be performed incorrectly.

The present invention solves all of the above-mentioned drawbacks, can be installed on a drilling machine at a much lower cost, and even in field work, the above-mentioned numerical control method can be used by simply setting the detection dog on the guide rail according to the number of holes to be drilled in line with the scale of the counter plate. Alternatively, it can exhibit performance comparable to the photoelectric punch plate method.

Here, a major feature of drilling work for flat plates and shaped steel is that the screw holes that are normally drilled are arranged in one or more rows in the longitudinal direction of the workpiece, and even if there are multiple holes, they all have the same diameter. The purpose of this invention is to provide a device that is easy for an operator to operate and has a simple structure, taking into account the fact that most of the work involves repeating the same arrangement or staggered arrangement.

Next, one embodiment of the present invention will be described based on the drawings.
Figure 2 shows a front view of the drilling machine for flat plates and shaped steel, and Figure 2 shows a right side view of the main parts.

A clamp device 18 for fixing a workpiece P, which is an object to be drilled, is provided on the table 4 in front of the body frame 2, and an X-axis sliding device 7 that slides in the lateral direction (X-axis direction) is provided behind the workpiece P. , a Y-axis sliding device 8 that is perpendicular to the X-axis sliding device and slides in the vertical direction (Y-axis direction) is provided on the top of the Y-axis sliding device 8.
has a head portion 3 that is slidable in the horizontal direction (X-axis direction) and the vertical direction (Y-axis direction), and a drill 22 is attached to one end of the head portion 3, and an X-axis sliding device 7, Y-axis sliding device 8
A Z-axis sliding device 9 that slides perpendicularly to the vertical direction is provided, and these X-axis sliding device, Y-axis sliding device, and two-axis sliding device all move in predetermined directions with respect to the main body frame 2. It has a configuration in which linear sliding displacement is performed independently of each other along the guide portions of the X-axis direction.To explain this specifically, in the X-axis direction, an 28
The X-axis sliding device 7 is slidably fitted to the drive cylinder 10, and the drive cylinder 10 is slid in the X direction.

Similarly, regarding the Y-axis direction, the X-axis sliding device 7 is provided with a Y-axis direction guide portion 29, and this guide portion 2 is slidably fitted with the former ζY-axis sliding device 8, and the drive cylinder 11 is used to move the Y-axis. direction, and for the Z-axis direction, the Y-axis sliding device B has two
An axial guide portion 30 is provided, and a two-axis sliding device 9 is slidably fitted into this guide portion 30 and driven in the Z direction by a driving cylinder 12. By providing a position detector on each of the sliding devices for the X, Y, and Z axes, the position can be automatically detected and drilling operations can be performed.

Here, 14 is an X-axis position detector, 35a is a detection dog, 15 is a Y-axis position detector, 35b is a detection dog, and these detection dogs 35a,
35b can be arbitrarily arranged according to the scales of count plates 47a and 47b attached to the guide rails 46as and 46b.

Further, 16a, 16b, and 16C are Z-axis direction position detectors, 16a is for determining the upper limit position of the drill 22, 16C is for determining the lower limit position, and 16b is for determining the two-axis direction of the drill 22. A deceleration switch for drill 2
2 is switched to a deceleration process, and the point just before the start of cutting is detected, and the timing of the descent of the oil blower 25, which will be described later, is determined. These detectors 16a, 16
b, 16C can also be arbitrarily adjusted along the slide shaft 27.

On the other hand, reference numeral 21 denotes a pulley which rotates the drill 22 by receiving rotational force from a motor (not shown). At this time, the oil plow 25 near the drill 22
When the drill 22 is lowered to an appropriate position in response to a signal from the presser cylinder 13 while being guided by the guide plate 24 and guide shaft 23, the workpiece is pressed in the vertical direction just before drilling.

In this example, a high-frequency oscillation type proximity switch is used as a position detector, but the position detector is not limited to this.
Of course, if it is a non-contact sensor and has good responsiveness, such as a photoelectric sensor, various design changes are possible. Next, 1
8 indicates a clamping device for the workpiece P, 31 is a hydraulic chuck, which can slide on the slide rail 19;
There is a fixed stopper 32 facing this, and by manually rotating the handle wheel 17 according to the width dimension of the workpiece, the screw gear 34 rotates, and at the same time the left and right brackets 3
3. 33 moves in the Y-axis direction together with the slide rail 19, the hydraulic chuck 31 approaches the common workpiece P, and after rough positioning there, the hydraulic chuck 31 is operated to perform reliable chucking. ing. Therefore, the stroke of the hydraulic chuck 31 only needs to be short.

The handle wheel 17, the clamping chuck, and the sliding sources in the X-, Y-, and Z-axis directions are not limited to hydraulic pressure, but may also be electrically powered, and the stop bracket 20 at the end of the table 4
is for determining one end of the workpiece, and the drilling position of the workpiece is performed based on this end.

Next, Fig. 3 is a perspective view of the main parts of the flat plate/shaped steel drilling machine, Figs. 4 and 5 are front views showing the 8 o'clock state when the position detector detects the detection dog, and Figs. The seventh factor is a plan view showing the position of the hole in the drilled workpiece, and FIG. It is clamped by a clamp device 18. Next, operate control box 6,
Depending on the drilling operation mode select switch, either manual or semi-automatic drilling, or automatic U-shaped drilling or staggered drilling is selected (see Figure 8), and then, if automatic, the X-axis direction and Y-axis direction are selected. Direction number of perforation selection data switch 4
5 to display the number of required pieces. At this time, the positioning of the head portion 3 in the horizontal direction (X-axis direction) and the vertical direction (Y-axis direction), that is, the positioning of the X-axis sliding device 7 and the Y-axis sliding device 8, is determined by the position detector 14 and 15 and detection dog 35
a.

35b.

To explain this in the case of drilling a U-shaped pattern, the drill 22 has an X-axis sliding device 7 and a Y-axis sliding device 8.
Accordingly, the detection dogs 35a, 35b are placed on the respective guide rails 46a, 35b at the portions corresponding to the respective initial positions.
46b, and is stopped when detected by the position detector 14.15.

The detection method using the position detector 14 (15) is shown in FIG.
As shown in FIG. 5, the position detector 14 (15) consists of three detection units (14 (1), 1) each arranged in a triangular shape.
4 (2), 14 (3) (15 (1), 15 (2),
15 (31), and when the position detector 14 (15) moves from the left to the right in the drawing, in Fig. 4, first the X-axis sliding device? (Y-axis sliding device 1B)
is moving at high speed and the detection unit 14 (2) (15
(21) detects the left end face of the detection dog 35a (35b), a detection signal is input to the input device of the control panel 5, and the sequence controller operates to turn off the high speed valve and turn on only the deceleration valve. 14 (3) (15 (31) detects the left end face of the detection dog 35a (35b) and stops the detection unit). Controlled.Detector 14
When (15) moves from right to left in the drawing, first detecting unit 14 [2] (15
t2)) detects the right end surface of the detection dog 35a (35b) and enters the deceleration process, and then the detection unit)14(
11 (15 (11)) is stopped by detecting the same end face. The position control method of the X-axis sliding device 7 (and Y-axis sliding device 8) is as described above.

Next, set the work mode select switch 44 to automatic (
1) Turn to the U-shaped position and press the number of holes selection data switch 4.
5 displays the number of holes to be drilled in each of the X-axis direction and Y-axis direction, and also issues a preliminary operation command to prioritize which direction to drill in the X-axis direction or Y-axis direction. The system is such that it is stored in the sequence controller, which is an internal device.

When the preparations are completed in this way, the start button on the control box 6 is pressed. Then, in FIG. 6, the head portion 3 is initially stopped at the initial position N in the horizontal direction (X-axis direction) and the vertical direction (Y-axis direction), but the position sensor 14 in the X-axis direction and the position sensor 14 in the Y-axis direction By the position detector 15,
Detection dogs 35a and 3 arranged at arbitrary positions, respectively.
5b and move diagonally to the first position of hole hole H1l.
This stops and the drilling process begins.

In the drilling process at this time, when the drill 22 in FIG. 2 descends and the Z-axis position detector 16b is detected by the Z-axis detection dog 35C, the descending speed of the two-axis sliding device 9 is decelerated. At the same time, the presser cylinder 13 operates, the piston rod 26 extends, and the oil blower 25 is lowered to press the workpiece P from above. At this time, the drill 22 continues to descend, but since the presser cylinder 13 is fixed to the Z-axis sliding device 9, the internal pressure of the presser cylinder 13 will not match the amount of descent of the drill if no precautions are taken. This increases proportionately, resulting in unnecessarily forceful pressing of the workpiece P, which can be dangerous. To prevent this, the pressurized oil in the presser cylinder 13 is drained when the drill is lowered, so that the pressure is constantly maintained at a constant pressure. I try to press the workpiece. At the same time, the oil blower 25 has an oil supply hole therein, and is configured to supply oil to the drill 22 and the workpiece P when drilling the workpiece. In this way, after the drilling process is completed, the
High-speed movement is started in the commanded direction (for example, the X-axis direction) based on one of the preceding movement commands in the Y-axis direction.

After confirming the next detection dog 35a, the movement is stopped and the process of drilling the H2 hole begins (FIG. 6).

Thereafter, the drilling process is repeated for the prespecified number of holes in the X-axis direction, and the pre-movement command direction setting value (5
) and the number of holes to be drilled, and if they match, move in the other direction (Y-axis direction) and perform the drilling process after detecting the detection dog at the H6 hole position.

If the set value for the number of perforations does not match the actual number of perforations (in the case of an error), the machine returns to the initial position and stops. After drilling the H6 hole, the hole is moved to the H2O hole position by repeating the drilling process in the opposite direction to the above while detecting the detection dog.

Then, move in the Y-axis direction again to the H1l hole, repeat the above operation several times, and finally confirm the data for setting the number of holes in the X-axis and Y-axis directions and the number of holes in the X-axis and Y-axis directions. When they match, the head portion 3, ie, the drill 22, returns to its initial position N from its hole position (H2O).

In the above case, if the command gives priority to the Y-axis direction, H1→HIO-H1l→H20→H19→H12...
・The holes are drilled in the order of →H16, and the hole is returned to the initial position N from the H16 double position.

In the above case, if the drilling type for the workpiece P is a staggered pattern, set the work mode select switch handle in Figure 8 to the automatic (2) staggered position and drill the holes in the same manner as above. It also issues advance movement commands in the X-axis direction or Y-axis direction. In this way, when the start button is pressed, high-speed movement, deceleration, stop, and drilling process are performed in the same way as described above, but to explain this based on FIG. 7, first, the drill 22 has an X-axis sliding device and a Y-axis sliding device: , moves from the initial position N to point number C of Hl, stops, and performs the drilling process.

Next, if priority is given to the X-axis direction, it will head toward the H1l hole, but even if a detection dog is detected at that position, it will be ignored by the internal memory circuit and it will head toward the H2 hole without stopping. In this way, the H2 hole position is detected in the same manner as described above, and the drilling process is performed to proceed to the H3 hole. Next, the drill 22 is supposed to go to the HI3 hole, but the internal memory circuit ignores drilling in that part, so the drill 22 heads to the H4 hole without going through the H13 overlap position. In this way, the time required for movement is reduced, the drilling number setting data and the corresponding number of holes in the X-axis direction and Y-axis direction are compared, and the drilling and movement are repeated until the final drilling position HIO hole is reached and the initial position is set after the drilling process is completed. This is a mechanism for returning to position N.

As described in detail above, the advantages obtained by using the device according to the present invention are as follows: (1) It can be mounted on a machine at a low cost, the operation is simple, and the stopping accuracy is equivalent to that by numerical control.

■To set the drilling position, simply slide the detection dog to any position on the guide rail.

■It is possible to automatically perform predetermined drilling patterns quickly and accurately without relying on the operator's intuition.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a front view of a flat plate/shaped copper drilling machine equipped with the device according to the present invention, FIG. 2 is a right side view of the main part, and FIG. Figure 3 is a perspective view of the same main part.
Figures 4 and 5 are front views showing the state when the position detector detects the detection dog, Figures 6 and 7 are plan views showing the position of the hole in the workpiece, and Figure 8 is It is a partially enlarged view of the control box. DESCRIPTION OF SYMBOLS 1...Drilling machine for flat plates and shaped steel, 2...Body frame, 3...Head portion, 4...Table, 5...Control panel, 6...Control box, 7... X-axis sliding device, 8... Y-axis sliding device, 9... Z-axis sliding device, 10... X-axis direction drive cylinder, 11... Y-axis direction drive cylinder, 12. ...Z-axis direction drive cylinder, 13...
・Work holding cylinder, 14.15.16a,
16b, 16C...position detector, 17...handle wheel, 18...clamp device, 19...slide rail, 20...stop bracket, 21...
Pulley, 22... Drill, 23... Guide shaft, 24... Guide plate, 25... Oil blower, 26... Piston rod, 27... Slide shaft, 28... X direction guide Part, 29...
Y direction guide part, 30...2 direction guide part, 31
...Hydraulic chuck, 32...Fixed stopper, 33.
...Bracket, 34...Screw gear, 35a, 3
5b. 35C...Detection dog, 46a, 46b...
Guide rail, required...Work mode select switch, 47a, 47b...Counter plate, 45...
Perforation number selection data switch, P...Work

Claims (1)

[Claims] A clamp device for fixing a workpiece is provided on the table in front of the main body frame, an X-axis sliding device is provided at the rear of the workpiece to slide horizontally with respect to the main body frame, and an X-axis sliding device is provided above the workpiece. An X-axis sliding device is provided that slides in the vertical direction perpendicular to the In a flat plate/shape steel drilling machine equipped with an X-axis sliding device and a Z-axis sliding device that is perpendicular to the X-axis sliding device and slides in the vertical direction, In addition to attaching a counter plate to each guide rail installed parallel to each other,
By arranging a plurality of detection dogs related to the drilling of the workpiece on each guide rail, and installing a position detector on the X-axis sliding device and the X-axis sliding device, the X-axis sliding device or the X-axis When the sliding device moves, it detects the detection dogs arbitrarily placed on each guy/trail, and after stopping, performs the drilling process, and when all the detection dogs in the vertical and horizontal directions are detected in the same way as above, An automatic drilling position detection device for a flat plate/shaped steel drilling machine, characterized in that the shaft sliding device and the X-axis sliding device are configured to automatically return to their origin.