JPS58155108A - Drilling machine for flat plate and shaped steel - Google Patents

Abstract

PURPOSE:To improve drilling precision and its efficiency by a method wherein a head part is equipped above a work fitting part being fixed, constituted slidably and independently in the X-, Y-, Z- axis directions and a position detector is set respectively on each sliding unit. CONSTITUTION:A work P is clamped by a clamp 18 on a table 4. A control box is operated to select a drilling mode. When a start button is pressed, a head part 3 is moved in the oblique direction to the detecting dog 35a and 35b (not shown in fig.) for respective positions by an X-axis direction position detector 14 and a Y-axis direction position detector 15, and stops at the first drilling position. Then, a drill 22 is lowered, its downward movement is controlled by the axis direction detecting dog, and the work P is drilled.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a drilling machine for drilling screw holes in flat plates and shaped steel (H-shaped steel, channel steel, ■-shaped steel, angle-shaped steel, etc.).

Conventionally, a flat plate drilling machine and a section steel drilling machine were completely separated, and the drilling work was performed using separate machines. That is, drilling holes in a flat plate can be done manually by attaching a multi-axis head to a fixed drilling device and moving the workpiece, or by making a model plate with holes drilled to the same dimensions as the workpiece in advance and applying this plate to a copying device. It was to be perforated with.

However, in the case of the above-mentioned method using a multi-axis head, a large amount of power is required to operate the multiple axes simultaneously, and the device is also large-scale.

In order to install a protective cover (bellows, etc.) to prevent chips generated during drilling of 6ζ from falling onto the sliding part of the workpiece,
The entire workpiece fixing part (table) became large, and it took time and trouble to attach and detach the workpiece. In addition, when attaching a workpiece to the table surface, if it is a heavy object, it must be operated by a crane, and if the operation is incorrect at this time, it may cause a shock to the sliding part or the sliding part may be pinched. This made it difficult to maintain machine accuracy.

In the case of the copying device method, a model plate must be prepared in advance, and since it is a manual method, a worker must be constantly engaged in drilling work, which is inefficient and costly. there was.

In addition, conventional drilling for shaped steel involves drilling from the top or side using a single multi-axis head by moving the workpiece, or using a drilling machine from three directions using an l-axis or multi-axis.

However, with the above configuration, the entire device is very thick, difficult to operate, and the minimum drilling pitch is limited, which causes many inconveniences in use.Also, the size setting method by moving the workpiece The two axes on the left and right sides of the workpiece could only be drilled with the same size at the drilling pitch.

The present invention has been made in view of the above, and includes fixing a workpiece mounting portion, mounting a head portion above the workpiece mounting portion, and
By configuring the head portion to be able to move independently in the X, Y, and Z axes directions perpendicular to I, the mass of the sliding portion is reduced and stopping accuracy is increased, and each of these sliding devices is A position detector is provided to automatically detect the position while drilling.

Next, one embodiment of the present invention will be described based on the drawings. FIG. 1 shows a front view of a drilling machine for flat plates and shaped steel, and FIG. 2 shows a right side view of the main parts thereof.

1 is a drilling machine for flat plates and shaped steel, and a clamping device 18 is provided on the table in front of the main body frame 2 to fix a workpiece P, which is an object to be drilled. An X-axis sliding device 7 that slides in the horizontal direction (X-axis direction) is provided above the X-axis sliding device 7, and a Y-axis sliding device 8 that is perpendicular to the X-axis sliding device and slides in the vertical direction (Y-axis direction). 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 the head portion 3
A drill 22 is attached to one end of the 2-axis sliding device 9, which is perpendicular to the X-axis sliding device 7 and the Y-axis sliding device 8 and slides in the vertical direction. Position detectors 14, 15, 16a, 16b, iac on each sliding device of the shaft
By providing this, it is possible to perform drilling work while automatically detecting the position.

The X-axis sliding device, the Y-axis sliding device, and the l-axis sliding device are each configured to linearly slide independently from each other along guide portions in predetermined directions with respect to the main body frame 2. Specifically speaking, regarding the X-axis direction, an X-axis guide section 28 is provided on the main body frame 2, and the X-axis sliding device 7 is slidably fitted into this guide section 28. and slide it in the X direction using the driving cylinder 10.

Similarly, regarding the Y-axis direction, the X-axis sliding device 7 is provided with a Y-axis direction guide portion 29, and the Y-axis sliding device 8 is slidably fitted into this guide portion 29, and the Y-axis direction is moved by the driving cylinder 11. For sliding in the axial direction, and for the Z-axis direction, the Y-axis sliding device 8 is provided with a two-axis direction guide portion 30, and the two-axis sliding device 9 is slidably fitted into this guide portion 30 and driven. It is driven in the Z direction by a cylinder 12.

By providing a position detector on each of the sliding devices for the X, Y, and l axes, the position is automatically detected and the drilling operation is made possible. In this ξ, 14 is an X-axis direction position detector, 35a is a detection dog,
15 is a Y-axis direction position detector, 35b is a detection dog, and these detection dogs 35a and 35b are connected to the guide rail 4 (5a146b) and a counting board 47a,
47t)7) Can be arranged arbitrarily according to the scale. Further, 16a, 16b, 16C are l-axis direction position detectors, 16a is for determining the upper limit position of the drill 22, 16C is for determining the lower limit value, 16b
is a biaxial deceleration switch for the drill 22, which switches the descending speed of the drill 22 to a deceleration stroke and detects the point immediately before starting cutting, and determines the descending timing of the oil plow 25, which will be described later. These detectors 16a1
16b and 16C can also be arbitrarily adjusted in position along the slide shaft 27. On the other hand, 21 is a pulley that 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 descends to an appropriate position in response to a signal from the position detector 16b, it is guided by the guide plate 24 and guide shaft 23 and presses the workpiece vertically by the presser cylinder 131C just before drilling. In this example, a high-frequency oscillation type proximity switch is used as the position detector, but the design is not limited to this, and various design changes are possible as long as it is non-contact type and has good responsiveness, such as a magnetic sensor or a photoelectric type sensor. Thing 11: Of course.

Next, 18 shows a clamping device, 31 is a hydraulic chuck, which is slidable on the slide rail 19, and a fixed stopper 32 is provided opposite to this, and a handle wheel 17 is set according to the width dimension of the workpiece. By manually rotating the screw gears, the left and right brackets 33.3 are rotated at the same time.
3 moves together with the slide rail 19 in each cY-axis direction, and the hydraulic chuck 31 approaches the workpiece P. After roughly positioning the workpiece P, the hydraulic chuck 31 is operated to perform reliable chucking. . Therefore, the stroke of the hydraulic chuck 31 only needs to be short.

This clamping device 18 can easily clamp even when the shape of the workpiece P' is inclined as shown in FIG. 3, which shows another embodiment. That is, the fixing stopper 40
By turning the knob nut 41, the chucking block 42a protrudes and comes into contact with the side edge of the workpiece.

By turning the knob 43 of the fixed block 37 in this state, one end of the slide rail 38 moves along the screw shaft 39, so the hydraulic chuck 36 also moves together, and the chucking block 42b at the tip moves toward the side edge of the workpiece. located parallel to. In this way, the handle wheel 17 is rotated in the same manner as described above to pre-position the handle, and the hydraulic pressure is activated to finally perform chucking.

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 be electric 6ζ, and the stop bracket 2 at the end of the table 4 may be used.
0 is for determining one end of the work, and the drilling position of the work is performed based on this end.

Next, the operation of the above-mentioned device will be described. A drilling work P is conveyed on the table 4 and is clamped by the clamp device 18. Next, operate the control box 6 and select manual, semi-automatic, or automatic U-shaped drilling or staggered drilling using the drilling operation mode select switch. If automatic, the X-axis, Y
The required number of holes is displayed using the data switch 45 for selecting the number of holes to be drilled in the axial direction.

When the start button is pressed in this way, the head portion 3 is moved from the initial position in the horizontal direction (X-axis direction) and vertical direction (Y-axis direction) by the position sensor 14 in the X-axis direction and the position sensor 15 in the Y-axis direction. moving in a diagonal direction to detection dogs 35a and 35b arranged at arbitrary positions, respectively;
Stop at the first drilling position.

Next, when the drill 22 descends and the two-axis detection dog 35C detects the Z-axis position detector 16b,
The descending speed of the two-axis sliding device 9 is reduced, and the presser cylinder 13 is operated, the piston rod 26 is extended, the oil blower 25 is lowered, and the workpiece P is pressed from above. At this time, the drill 22 also continues to descend, but since the presser cylinder 13 is fixed to the two-axis sliding device 9,
If no precautions are taken, the internal pressure of the presser cylinder 13 will increase in proportion to the amount of descent of the drill, resulting in unnecessarily forceful pressing of the workpiece P, resulting in danger. By removing the pressure oil in the presser cylinder 13, the workpiece is constantly pressed at a constant pressure. 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, when the drilling work at the relevant location is completed, the head section 3 is moved to the next determined position by the detection dog,
The drilling operation is repeated, and when all the drilling operations are completed, it returns to the initial position. A control panel 5 includes a sequence controller for controlling each operation in a predetermined order.

The effects obtained by using the flat plate/shape steel drilling machine according to the present invention as described above are as follows: ■Since the work clamp part is fixed, the table space is small (the table does not move in the X and Y directions). )
.

■This single machine can drill holes in flat plates and shaped steel.

■Since the table is fixed, accuracy will not be affected even if a shock is applied.

■Low price compared to drilling machines with NC.

(2) X%Y% Since the two-axis sliding device can have a small mass, the positioning accuracy is higher (and the time required for stopping is shorter than when the head portion is gate-shaped).

As described above, the present invention provides a drilling machine for flat plate fist-shaped steel that is extremely useful in practice.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is a front view of a drilling machine for flat plates and shaped steel, Fig. 2 is a right side view of the same essential parts,
FIG. 3 is a plan view of the clamp device. 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, 1
6b, 16C... Position detector, 17... Handle wheel, 18... Clamp device, 19... Slide rail, 20... Stop bracket, 21... Pulley, 22... Trill, 23-...Guide shaft, 24...Guide plate, 2゛25...Oil blower, 26...Piston rod, 27...Slide shaft, 返...X-direction guide part, 29...
・Y direction guide part, 30...2 direction guide part, 3
1... Hydraulic chuck, 32... Fixed stopper, 33
... Bracket, 34 ... Screw gear, 3
5a, 35b.

Claims (1)

[Scope of Claims] +1) A clamp device is provided for fixing a workpiece on a table in front of the main body frame, and an X-axis sliding device is provided at the rear 6ζ of the workpiece to slide in the lateral direction with respect to the main body 7 frame, At the top, there is a Y that is perpendicular to the X-axis sliding device and slides vertically.
A shaft sliding device is provided, and the Y-axis sliding device has a head portion that can be slid in the horizontal and vertical directions, and a drill is attached to one end of the head portion to move the X-axis sliding device and the Y-axis. By providing a Z-axis sliding device that is perpendicular to the sliding device and sliding in the vertical direction, and by providing a position detector on each of the X-axis, Y-axis, and Z-axis sliding devices, the position can be automatically determined. A drilling machine for flat plates and shaped steel that enables drilling work while performing detection. (2) The drilling machine for flat plates and shaped steel according to claim (1), wherein the clamping device is capable of fixing a planar or curved workpiece manually, hydraulically, or electrically. (3) The drilling machine for flat plates and shaped steel according to claim 1, wherein the two-axis sliding device includes a device that presses the workpiece in two-axis directions immediately before drilling.