JPS6048205A - Position control method of core drill for shape steel - Google Patents

Abstract

PURPOSE:To improve drilling operation, working efficiency, and processing accuracy by making up the conditions allowing drilling holes in all positions on the basis of single data by performing a zero-return exactly and in a short time, and by alternating zero position in accordance with the drilling positions. CONSTITUTION:In a position-control method for a shape steel-core drill automatically drilling the specified tack holes, when a left side zero-return button is depressed to actuate START, a target value wherein drill units 7, 8 travel to the specified first hole-position, is determined by a positioning loop, and automatic positioning is achieved to perform, specified drilling. Next, after depressing the right side zero-return button, the right side drilling is performed by automatically positioning units 7, 8 to the right side zero-position. And the data read out from the microcomputer 10 is allowed to be single and the travelling directions of units 7, 8 are merely different from each other. Thus, the improvement of drilling operation, working efficiency, and processing accuracy can be achieved.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention automatically positions a drill unit for drilling rivet holes in shaped steel at predetermined left, right, and center origin points according to instructions from a microcomputer, and also drills a predetermined rivet hole using the origin as a reference point. The present invention relates to a method of controlling the position of a drilling machine for section steel that automatically drills holes. Generally, when drilling riveted holes on the left and right sides and intermediate positions of steel sections such as H-section steel, channel steel, and angle steel, the workpiece is fixed at a predetermined position on the table of a section steel drilling machine, and the drill unit This is done by moving ()〇 In this case, the riveting holes are mostly arranged in the same way with respect to the center, and the riveting holes on the left, right, and intermediate positions are the same, and the hole diameters are also the same. Conventional means for positioning the workpiece have been the dog setting method, the use of punch grates, and the paralytic numerical control method, but all of these methods were inefficient. That is, in the dog setting method, dogs must be set corresponding to the positions of the left side, right side, and center of the workpiece, which is extremely troublesome and inefficient. In addition, in the copying method using a punch plate, positioning on the left and right sides can be performed by attaching one punch plate in the forward and reverse directions, but positioning in the center direction requires positioning with a separate punch plate. However, the workability was very poor, and there were problems when replacing the punch plate and its storage. In addition, since the numerical control method has one origin position in the longitudinal direction (X-axis direction) of the workpiece, it is possible to align the workpiece from either direction, but it is possible to align the workpiece from either direction or from an intermediate position. The positioning has the disadvantage that after aligning the marking line provided on the workpiece with the origin, drilling must be performed based on different data instructions. As mentioned above, not only does positioning take time in all cases, but also different data is required depending on the perforation position of the workpiece, and the capacity of the microcomputer that stores this data becomes large and expensive. Defects arise. In addition, operator skill is required for positioning, and there are also problems in maintaining machining accuracy.

The present invention has been devised to solve the above-mentioned drawbacks, and its purpose is to perform origin positioning extremely quickly and accurately, and to improve operability, work efficiency, and machining accuracy. An object of the present invention is to provide a position control method for a section steel drilling machine that can be implemented at low cost.

In order to achieve the above object, the present invention provides a position detection device near both ends of a workpiece in the longitudinal direction (X-axis direction) of a drilling machine for section steel, and connects a drill unit for drilling rivet holes to the position detection device. After engagement, based on the instructions of the predetermined movement amount from the microcomputer, the rivet holes to be drilled at the left end, right end, and intermediate positions of the drill unit) Y and the workpiece are distributed to the left origin and right origin corresponding to the center. , move to the center origin, control the positioning, align the center of the left end, right end, and the distribution of the workpiece with these origins, and then use each origin as the reference point and move to a single point input in advance to the microcomputer. The present invention is characterized by a position control method for a section steel drilling machine that automatically drills holes in the workpiece according to data instructions.

Hereinafter, embodiments of the present invention will be described based on the drawings.

First, an outline of a drilling machine for shaped steel will be explained with reference to FIGS. 1 to 4.

Figure 1 shows an overview of the drilling machine for shaped steel (1). That is,
A support (4) is erected on a base (3) that supports a workpiece (2) made of shaped steel, and a frame-like portal frame (5) is attached to the base above the support (4). It is mounted parallel to the table (3), and a rail guide (6) is slidably suspended on the opposite side of this gate-shaped frame (5), and the rail guide (6) is slidably suspended in the longitudinal direction (CX-axis direction) with respect to the workpiece (2). It is designed so that it can be moved. The rail guide (6) has a slide surface (Fig. The drill unit (7) is movable in the Z-axis direction along the rail guide (6) and is moved in the Y-axis direction (X-axis and With the above configuration, the drill unit (7) is movable relative to the workpiece (2) in the X-axis, Y-axis, and Z-axis directions. On the other hand, a horizontal frame (not clearly shown in the figure) is installed between the rail guides (6), and another drill unit (8) is slidably suspended on the sliding surface of the horizontal frame. This drill unit (8) is movable in the X-axis, Y-axis, and Z-axis directions.

In addition, the movement of the drill unit (force, (8)) is performed using the cylinder (9).
) etc., and the cylinder (9) is controlled by a microcomputer 00) and a control device (10') that engages with it.
) is automatically controlled by the drill unit (7) 1 (
The amount of movement of s+ is accurately grasped via a rotary encoder (not shown). Further, an operation panel (Ill), which will be described later, is engaged with the microcomputer a1.

The workpiece (2) is supported on 70 units O2, and as shown in Fig. 2, the roller (131') is pushed up and inserted into the base stand (3), and as shown in Fig. 3, the handle for moving the workpiece is (14) is manually moved to a predetermined position on the base table (3).The workpiece (2) is also moved to a horizontal vice cylinder (1 (shown in Fig. 3)) and a presser cylinder ( +61 is fixed on the base stand (3).The horizontal vice cylinder (151 is the clamp handle (1,
7).

There is a ray cover (near the Drill Unit 0 Barrel of Power).
A light beam generator 01 (shown in Figure 4) is provided surrounded by the light beam generator 19a), and a beam with a width of 1.5 m and a length of 80 m1 is generated from this light beam generator (I), and the center position of the drill group 0 is irradiates the processed surface of the workpiece (2).

Next, as shown in FIG. 5, position detection devices (24) such as limit switches are installed near both ends of the workpiece (2) in the longitudinal direction (X-axis direction) of the section steel drilling machine (1). (25
) are provided and the drill unit (with which the force can be engaged) is provided.

Detection signals from the position detection devices (24) and (25) are input to the microcomputer θ0). A rotary encoder (22) is engaged with the microcomputer α0) so as to be able to detect the amount of movement of the drill unit (7) based on instructions from the microcomputer (10).

In addition, a left origin (L) is provided on the left side of the section steel drilling machine (1) in the X-axis direction, a right origin (R) is provided on the right side, and a center origin (C) is provided in the middle. , right side, the drill unit (force is positioned and controlled to its respective origin by the return-to-center operation).

The origin positioning method will be explained with reference to the flowcharts of FIGS. 6 and 7. FIG. 6 shows left or right origin position control. Press the left or right origin return push button 5TAR
'I' (step ■). P B ON (step ■) is YES if the drill unit is not at the origin.
It becomes S.

X IJ Is the turn OK? (Step ■) +t The hydryl unit moves toward the left or right side and engages the LSvc. The drill unit is the roasting device (24,).

If (25) is engaged, the result is YES. If the engagement is not 1- (in the case of No), a high-speed return is output (
X high return output ON step ■). X return OK
(Step ■) returns to the original position and proceeds to the next step.

Check if the position is OK (step ■) if the drill unit is in the L position above.
After being engaged with S, if it is positioned at a predetermined origin position, the result is YES. Whether the Z signal is OK (step ■) is displayed when the rotary encoder emits a Z signal when the drill unit is positioned at the home position and reaches the home position. If the Z signal is not issued (in the case of NO), it moves at low speed to the home position (X-low forward output ON step ■). Position 11 (OK (step [phase]) indicates that it has been positioned at the origin. With the above, the origin return is completed (step O), and the next return step (
RET@).

As described above, by confirming the predetermined position of the left end or right end using the detection device (24) and (25), and moving from this predetermined position t by the predetermined movement amount input to the microcomputer αO, Return to origin is performed, and the operation is automatic, making positioning extremely easy.

FIG. 7 shows the case of center origin position control, in which positioning is performed using almost the same method as that of FIG. 6. However, in this case, after confirming that the left or right side has returned to the origin, an instruction for a predetermined movement distance from this origin position to the center origin is issued from the microcomputer 0 (center origin positioning ◎).

As described above, accurate return to the center origin is performed.

Next, the workpiece (2
) Processing position control for automatically drilling holes at predetermined positions will be explained.

First, the configuration of the operation panel Qυ will be explained with reference to FIG.

The operation panel 01) includes ON, OFF, activation fold, buzzer 5TOP, light beam ON, and return to left origin.

Return to right origin, return to center origin, roller LJP, roller D
Function selection switch (lla) for operating OWN, automatic start, etc., data key switch (llb) for inputting necessary data, display (IIC) for displaying each data, switching between automatic, manual, etc. A selector switch (]ld), a light beam timer (lie) for adjusting the light beam ON time d and Z, and the like are provided, and as shown in FIG. 7, data is stored in advance in the microcomputer 00). Note that the scan signal causes the keyboard (l
The necessary data is extracted from lb').

The G code represents the preparation function, GO is return to origin, G1 is the function to move from the origin to the first hole position in the X-axis stop direction (from left to right), G2 is the movement in the X-axis stop direction, and G4 is the X-axis path. Each represents movement in a direction. CH is the channel number designation, CN is the sequence number, I is a large number with the same dimension in the X-axis direction, K is a large number with the same dimension in the Z-axis direction, CL is clear, H is the height of the section steel flange, W is the section steel wave thickness, M
is the cutting width (center position), X is the Y-axis absolute coordinate value or incremental coordinate value, Y is the Y-axis absolute coordinate value or incremental coordinate value, Z, ,
Z2 indicates the absolute coordinate value or incremental coordinate value of the Z axis. Activation indicates an operable state, and write is used when inputting data. Buzzer S'l"OP alerts you when the operation is performed without lowering the roller α3). 5TOP operation of the buzzer, return to left origin, return to center origin, and return to right origin are performed by this operation on the drill unit (force, (8)
When the machine is moved to a predetermined origin, automatic start starts drilling automatically. The display (IIC) displays each current data.

As shown in FIG. 9, the microcomputer (10) has a left origin return, a right origin return, a center origin return? M return, automatic start, and data from the keyboard (llb+) of the data key switch (llb) are input, and the required data is displayed on the display (13C) by each operation.
), external equipment (2■ (Drill Units) (711 (8)
commands are transmitted to the operating mechanism). In addition, the microcomputer QO) includes detection devices (24), (25) for detecting the position of the drill unit (7) l (81), and a drill unit (force).

Rotary encoder (22) that detects the amount of movement of (8)
) is engaged. Further, the control device (10') is engaged to perform various control operations.

Next, the basic control method of this embodiment will be explained in FIGS. 10 to 1.
This will be explained using the flowchart shown in FIG.

As shown in Figure 10, press the left origin return button for 5T.
When ART (step ■)' (l-, a calculation loop (step ■) is performed in which the first hole position is read from the data area input in advance, and then the drill unit (force, (8) is A command to move in the positive direction (left → right) is given by the X-axis counter normal rotation set (step ■), and the positioning loop (step ■) moves the drill unit (force, (81Y movement) to the predetermined first hole position. A target value is determined, automatic positioning is performed, and a predetermined drilling is performed.Next, the second hole is processed through the calculation loop (step ■).
is read out from the data area, and the drill unit (force (8)) is instructed to move in the positive direction of the Y axis and positioned at the target hole position.The same process is repeated to complete the drilling on the left side.

Next, select the function selection switch (
When you press the right home return button of lla), the drill unit (8) is automatically positioned to the right home position,
11th due to automatic start 5TART (step no)
The drilling on the right side shown in the figure is made. In other words, the first hole position from the data area is the calculation loop (step ■)
It is read by. In this case, the position from the right end of the first hole is at the same dimensional position as the position from the left end described above, so it is sufficient to read out a single piece of data from the microcomputer αfυ similar to the case of the left origin. . Next, the direction of movement of the drill unit (force, (8)) is instructed by the X-axis counter reversal set (step ■).The absolute value of the movement of the drill unit (force, (8)) is the same as in the case of the left origin. However, the direction is reversed (right → left), so the X rotation counter is set to reverse.Next, the positioning loop (
) of the step indicates the position of the first hole. This position has the same dimensions as the left origin as described above. Thereafter, the same process is repeated to position and drill holes one after another.

As is clear from the above explanation, the data read from the microcomputer 00) may be a single one, and the only difference is the moving direction of the drill unit) (7) l (81). Therefore, if the microcomputer < 1(0) This means that only one type of single data needs to be stored.As described above, the drilling on the left and right sides is completed (
END step (e) Ie).

Next, the case 7 of the center origin will be explained with reference to FIG.

When you press the center return button, the drill unit (force,
In (8), the distribution of the intermediate hole is positioned at a position corresponding to the center, and by 5TAR'I' (step O), the first hole position in the X-axis stop direction (distribution is to the right of the center) is calculated. It is read from the data area by a loop (step ■). In this case, in order to use the above-mentioned single data inputted to the microcomputer [alpha], it is necessary to correct the center origin position of this data. That is, correction is performed by the data correction loop (step ①). Below, the same thing as in the case of the left origin is performed by x IQI + counter forward rotation set (step ■) and positioning loop (step ■), and it is repeated and completed (step O)
becomes.

In the case of the data correction loop (step 2), the correction corresponding to M during cutting is also performed at the same time. Next, in order to process the hole to the left of the center, the first hole is read out by the return calculation loop (step), and at the same time as above, data correction in the return direction is performed by return data correction (step ■). It will be done. Hereafter, as in the case of the right origin, the direction and target value of the X-axis count reversal counter (step ■) and positioning loop (step O) are determined by the above single data, and drilling is completed (step ■). . Machining completion END (step 12'') completes drilling around all center positions.As described above, even in the case of the center origin, single data is used as is.

Next, in order to explain the above flowchart in an easy-to-understand manner, the operation of the example shown in FIG. 13 will be described.

Holes with the same arrangement are drilled on the left, right, and center portions.

First, press the data switch (ll) on the operation panel (Ql).
Input the program into the microcomputer αQ by b). In FIG. 14, CHI.

Workpiece H=125 at CHo O. O, wave thickness W
=6.0. During cutting, input H=3.0, and then input three hole positions based on the function of the G code. By operating the left origin button, the drill unit (force, (8)) is located at the left origin (L), and by automatic start, positioning is performed sequentially based on the above input data.Next,
When the left side is completed, it is positioned at the right origin (R) based on the program input data for the right origin. Does the 04 function move in the opposite direction? Therefore, it is possible to perform automatic positioning using a single data input. Hereinafter, in the case of the center origin, the predetermined center origin (
C), and automatic drilling is performed with a single input data. Then, by returning to the left origin, it returns to its original position.

Incidentally, the chart shown in FIG. 14 shows an example, and it goes without saying that various other operation programs can be employed.

As is clear from the above explanation (according to the present invention, the return to origin can be performed extremely quickly and accurately, and
By changing the origin position according to the drilling position, all drilling can be performed using a single data, which improves operability, work efficiency, and machining accuracy, and does not require special skills from the operator. Microcomputers can also be inexpensive (this will have the effect of significantly reducing costs.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing the overall structure of a drilling machine for section steel, Fig. 2 is an explanatory diagram of the operation of the rollers that support the workpiece, Fig. 3 is a partial three-dimensional view showing the method of fixing the workpiece, and Fig. 4 The figure is a partial perspective view showing the light beam generator provided in the drill unit, FIG.
FIG. 7 is a flowchart explaining left or right origin position control, FIG. 7 is a flowchart explaining center origin position control, and FIG. 8 is a plan view of the operation panel of the embodiment of the present invention.
FIG. 9 is an explanatory diagram showing the data line of the embodiment, FIGS. 10 to 12 are flowcharts showing the operation in the case of left, right, and center origins, and FIG. 13 is a plan view showing an example of the workpiece. FIG. 14 is a flowchart showing the outline 7 of the operation program. 1... Drilling machine for shaped steel 2... Workpiece 3... Base stand 4... Support column 5... Portal frame 6... Rail kite 7.8.
...Drill unit 9...Cylinder 10...Microcomputer 101...Control device 11...Operation panel 11a...
...Function selection switch 1]b...Data key switch IJC...Death gray 11d...Light ray timer 11
b1... Keyboard I2... Top stand J3... Roller I4... Handle for moving the workpiece 15... Horizontal high-speed steel cylinder 16... Presser cylinder 17... Clamp handle] 8... Drill 19a. ...Light beam cover]9...Light beam generator 20...External device 22...Rotary encoder 24.25...Detection device CN G 0 0 60. OCL 25.0 25.00 '0
80. OCL 25.0 25.0TKXYZ, 22 0 0 1000, OCL 0 0 0 0 40, OCL 25.0 25.00 0 6
0, OCL 25.0 25.00 0 Bo, OCL
25.0 25.0IKX YZ+Zz 0 0 500, OCL OO o 0 1.5 CL OO o 0 40, OCL 25.0 25.00 0 6
0, OCL 25.0 25. OQ O80, OCL
25.0 25.0°"24-・ (B) CNG I K ) 1 Indication of the case % Application No. 58-155445 2 Name of the invention Position control method for a drilling machine for section steel 3 Relationship with the case by the person making the amendment (Series) Applicant Address Name Takeda Machinery Co., Ltd. (Subject) 4 Agent 5 Showa Year, Month, Day 6 Difference in amendment 1 elephant drawing (Fig. 13) 7 Contents of amendment Prisoner No. 13 is amended as shown in the attached sheet.

Claims (1)

[Claims] A workpiece made of steel sections such as H-shaped steel, channel steel, and angle steel is fixed at a predetermined origin position, and a drill unit is positioned and controlled at the origin position according to instructions from a microcomputer, and the longitudinal direction of the workpiece is In a position control method for a section steel drilling machine that automatically drills rivet holes on the left side, right side, and intermediate positions thereof, the section steel drilling machine is positioned near both ends of the workpiece in the longitudinal direction (X-axis direction). After providing a detection device and engaging the drill unit with the position detection device,
Based on the specified movement amount instructions from the microcomputer, the drill unit is used to distribute the rivet holes drilled at the left end, right end, and intermediate positions of the workpiece to the left origin, right origin, and center origin corresponding to the center. Position control of a drilling machine for shaped steel, characterized in that it performs positioning control on the workpiece and automatically performs drilling in the workpiece based on a single data instruction inputted in advance to the microcomputer using each of the origins as a base point. Method.