JPS6133690B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electric corner chisel, and more particularly to a corner chisel equipped with a device for reading the position of marking lines drawn on timber.

When drilling a long hole using a conventional so-called manual corner chisel, the marking lines are obscured by the cutting dust from the workpiece that is generated during the drilling process, so the work must be done while brushing away the cutting dust. It was inefficient. Furthermore, when aligning only the corners to the marking lines, in order to shorten the work time, alignment is often carried out while the cone of only the corners is being rotated by an electric motor, which is extremely dangerous.

In order to eliminate the inefficiency and danger of the above-mentioned traditional drilling work, and to improve the efficiency and safety of the drilling work, the bottom of the slide frame, which is vertically installed on the corner chisel, is slightly above the top surface of the timber. A drilling position reading gauge is installed on the frame, and a scale scale reader is installed on the side of the frame.Meanwhile, a scale is installed on the slide base parallel to the moving direction of the slide frame, and the drilling position reading gauge is read by operating the handle. When you match the marking line and in this state operate the position reading button provided on the top of the handle, the scale reader detects the position of the marking line from the scale, reads out this detection information, and stores it in the writing storage device. An electric angle chisel equipped with a line position reading device has been studied, and the scribing line position reading device has made it possible to automate long hole drilling work using an electric angle chisel.

The present invention provides a device for automatically controlling and driving a drill bit motor, a drill lifting motor, and a slide frame feed motor that moves only the corners to the drilling position, which are combined with the marking line position reading device. The purpose is to realize automation of long hole drilling work using an electric angle chisel.

Specific embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is an external perspective view of an electric angle chisel preferable for carrying out the present invention, showing a state in which the drilling position is read, and FIG. 2 is an external perspective view showing the state in which the electric angle chisel is set for drilling work after reading the drilling position. Figure 3 A-C
3 is a plan view illustrating the drilling position reading operation, FIG. 3D is a perspective view of the grip, and FIG. 4 is a block diagram of a control section including a recognition device and a storage device. FIG. 5 is a flowchart showing the operator's procedure and control operation, and FIG. 6 is a flowchart showing details of the elongated hole drilling position setting process shown in FIG.

In Figures 1, 2, and 3, reference numeral 2 denotes a corner that is installed vertically at the bottom of the drill bit motor 1 and has a built-in drill that is rotated and driven by the drill motor 1, and is used to drill a mortise hole in lumber 3. The corner chisel 2 moves up and down along columns 5 vertically installed on the left and right sides of the slide frame 4, respectively. The raising and lowering movement of the corner chisel 2 is effected by drive by a cone raising and lowering motor 7 which includes a pinion arrangement meshing with a rack 6 which is in fixed relation with the column 5. The slide base 8 is held by a base 9 placed on the lumber 3 so as to be slidable in the width direction of the lumber 3, and a slide frame 4 for moving only the corners 2 in the longitudinal direction of the lumber 3 is slidably fitted loosely. A guide 10 is provided parallel to the timber 3. Slide frame 4
A feed screw 11 that automatically feeds the frame in the longitudinal direction of the timber 3 and a slide frame feed motor 12 that rotationally drives the feed screw 11 are installed.The feed screw 11 is slidable on the guide 10 and engaged with the lock piece 13. It is threadedly fitted into a feed block 14 which is held in a lockable manner. The lock piece 13 is rotatably supported by a pin 15 fixed to the slide base 8, and the feed block 14 is locked by a claw portion 16 of the lock piece 13 by the action of a spring 17. 18 is a link having one end rotatably supported by the slide base 8 and the other end rotatably connected to the end of the handle 19;
Since a part of the feed block is pivotally connected to the feed block, the slide frame 4 connected by the feed block 14 and the feed screw 11 can be moved along the longitudinal direction of the lumber by rotating the handle 19. . 20 is a grip fixed to the top of the handle 19. 21 is a scale pivotally mounted on the slide base 8 in parallel with the guide 10;
1 is a scale reader which is fixed to a slide frame 4 and has a scale 21 loosely fitted into a hole extending through the center thereof, and a dust-proof cover 23 is attached to the scale 21. 24 indicates switches and indicator lights, and in terms of operability and visibility,
24a is a power switch and power on indicator light, 24
Preferably, b and 24c are respectively a light indicating completion of reading the upper end position of the elongated hole and a completion display light at the lower end, 24d a light indicating completion of steering wheel lock, and 24e a start switch/automatic operation display light. Reference numeral 25 is a drilling position reading gauge installed at the bottom of the slide frame 4 close to the upper surface of the lumber 3, and 26 is a marking line for a long hole drawn on the lumber 3. The entire corner milling machine is indicated by 53.

In FIG. 4, the recognition device 29 includes a switch 27,
A switch 28, a scale 21, a scale reader 22, an input bus 30, a read/write device, and a random access memory (hereinafter referred to as RAM) in this embodiment.
) 31 and other bus lines. Slide feed motor 12 is output bus 3
2. Take the NAND of output bus 33 with NAND 34,
Further, the decoder 35 and the NAND 34 are taken, and the AND 36 and AND 37 signals are amplified and driven by the amplifiers 38 and 39, and the conical motor 1 converts the signal of the output bus 40 by the decoder 35,
The output of the decoder 35 is amplified and driven by the amplifier 42 and the amplifier 43, and the conical lifting motor 7 is driven. Reference numeral 24 indicates indicator lights, which are connected to an I/O control device 46 via an input bus 44 and an output bus 45. 24f is a switch interlocked with the lock piece 13, connected in series with the start switch 24e, and both ends of which are connected to the I/O
It is connected to a control device 46. A drilling depth indicator 47 is connected to the I/O control device 46 via an input bus 48 and an output bus 49. Reference numeral 50 denotes a read-only storage device, which in this embodiment is a ROM, in which the control contents of the flowchart shown in FIG. 5 are written in advance. 51 is an arithmetic processing unit, which in this embodiment is a microprocessor, and 52 is a clock generator. I/O control device 46, ROM5
0, RAM 31, and microprocessor 51 are interconnected by instruction bus, address bus, and data bus lines, respectively, as shown.

To explain the operation of the above specific example,
The worker uses a corner cutter 53 to cut a corner 2 that is appropriate for the width of the elongated hole.
, place the corner cutter 53 on the lumber 3, fix the lumber 3 with a vise (not shown), and turn the power switch 2 on.
Insert 4a. The indicator light 24 turns on when the power is turned on.
A lights up and a reset signal is input to the microprocessor 51.
is read-only memory (hereinafter referred to as ROM)5
The reset routine stored in 0 is executed to initialize the RAM 31 and I/O control device 46 to predetermined states.

Next, the operator grasps the grip 20 and presses the gauge 25.
match the marking line 26a indicating the upper end of the elongated hole. (Fig. 3A) In this state, when the elongated hole upper end reading switch 27 is pressed, the scale scale reader 2
2 reads the upper end position of the elongated hole from the scale 21,
This information is stored in the designated address of the RAM 31, and the elongated hole upper end position reading completion indicator light 24b lights up. In the same way, pull the grip 20 and
5 to coincide with the marking line 26b indicating the lower end of the elongated hole. (Fig. 3b) In this state, when the elongated hole lower end reading switch 28 is pressed, the scale reading 2
2 reads the lower end position of the elongated hole from the scale 21,
This information is stored in the designated address of the RAM 31, and the elongated hole lower end position reading completion indicator light 24c lights up. The reading of the elongated hole drilling position is completed by the above operation, but as shown in FIG.
If you press the read switch 27 at position c, align the gauge 25 with the marking line 26a as shown in FIG. The information on the position of is cleared, and the information on the marking line 26a is newly stored in the designated address of the RAM 31. (See flowchart in Figure 6)
Further, as is clear from the drawings of the embodiment, the handle 19 and the grip 20 are erected in the direction of movement of the gauge 25 by the link mechanism of the link 18, and the switches 27 and 28 are mounted on the top of the grip 20. Since the switches 27 and 28 are mounted in a push button type, the switches 27 and 28 can be operated simultaneously while holding the grip 20 with one hand, and the gauges 25 and marking lines 26 are in a matching state when the switches 27 and 28 are turned on.
There is no need to shift the position of the Therefore, the operator can read the marking lines 26 drawn on the lumber 3 easily and with high precision.

After the elongated hole drilling position setting is completed, the drilling depth is set using the drilling depth indicator 47, and the grip 20 is pulled and the block 14 is moved to the lock piece 13.
At the same time, the handle 19 is pushed into the groove of the lock piece 13. By locking the handle 19, a switch 24f interlocked with the lock piece 13 is turned on, the handle lock completion indicator light lights up, and the corner chisel 53 is ready for automatic operation.

In this state, when the start switch 24e is turned on, the automatic operation indicator light 24a lights up and the corner chisel 53 drills a predetermined elongated hole according to the flowchart of FIG. That is, a of the decoder 35
A high level signal is output from the output terminal to the AND 36, while the current position of the corner only 2 is output every moment to the output bus 32 at the input end of the NAND 34, and to the output bus 33 at the input end of the NAND 34. RAM31
Information indicating the upper end position of the elongated hole is output from within a predetermined address. Therefore, the slide frame feed motor 12 is driven by the amplifier 38, and moves the corner chisel 2 together with the slide frame 4 to the position of the marking line 26a while rotating the feed screw 11. When the current position of the corner only 2 and the upper end position of the elongated hole of the RAM 31 coincide, the output of the NAND 34 becomes a low level and the output of the amplifier 38 is cut off, so that the slide frame feed motor stops. The side end surface of the corner only 2 coincides with the marking line 26a. Next, a high level signal is output from the c output terminal of the decoder 35, the cone motor 1 is driven by the amplifier 41, and when the rotation of the cone motor 1 reaches a predetermined state, the decoder 35
A high level signal is output from the d output terminal of the d output terminal, and the amplifier 42 drives the drill hoisting motor 7, which applies a downward force to the rack 6, causing the corner chisel 2 to descend into the lumber 3 while rotating, thereby drilling a hole. . When the hole is drilled to the specified depth, the d output terminal of the decoder 35 becomes low level, and the e output terminal becomes high level, and the amplifier 4
3 drives the drill hoisting motor 7 in the opposite direction to apply a lifting force to the rack 6, causing the corner chisel 2 to rise from the lumber 3 while rotating. Then, as only the corner 2 reaches the initial position, the decoder 3
Since the e output terminal 5 becomes low level and the output of the amplifier 43 is cut off, the cone lifting motor 7 stops. Next, AND3 is output from the b output terminal of the decoder 35.
A high level signal is output to Nando 34.
Information instructing the lower end position of the elongated hole from within a predetermined address of the RAM 31 is output to the output bus 33 at the input end of the slide frame feed motor 12.
While rotating the feed screw 11 in the opposite direction to the previous direction, the corner only 2 is moved together with the slide frame 4 to the position of the marking line 26b.
When the current position of the corner only 2 and the lower end position of the elongated hole of the RAM 31 coincide, the output of the number 34 becomes a low level and the output of the amplifier 38 is cut off, so that the slide frame feed motor stops. The side end surface of the corner only 2 coincides with the marking line 26b. Next, the decoder 35
A high-level signal is output from the c output terminal of , and the holes are subsequently drilled in the same order as the previous hole drilling operation. RAM by microprocessor 51
The calculation processing of the upper and lower end positions of the elongated hole in 31 is performed, and if further hole drilling is required, the corner only 2 performs the drilling work on the inside of the elongated hole upper and lower end positions in the same manner as above. Predetermined elongated holes are drilled in this order. When the drilling of the elongated hole is completed, the corner chisel 2 stops and stops at a predetermined raised position, and the slide frame 4 returns to the position where automatic operation started and stops.
Each indicator light 24b, 24c, 24d, 24e is turned off. When the handle 19 and grip 20 are operated again and the position of the next elongated hole is stored in the RAM 31 by the switches 27 and 28, the ROM 50 similar to the above is stored.
The elongated hole can be drilled at a predetermined position by controlling the . (Refer to the flowchart in FIG. 5) In the above embodiment, the rotation of the conical part of the corner only 2 is driven by the cone motor 1, and the vertical movement of the corner only 2 is carried out by a rack fixed to the column 5. 6 is driven by the cone lifting motor 7 including a pinion device meshing with the cone lifting motor 7.
Alternatively, one of the conical motors 1 can be eliminated, and a known power transmission device such as a gear can be used to link the rotational drive of the conical part of the corner only 2 and the vertical movement of the corner only 2, and the driving can be performed using the same power source. It is clear that even if this is done, the spirit of the present invention will not be departed from.

According to the present invention, the automatic control drive device of the drill motor, the drill lift motor, and the slide frame feed motor that moves only the corner to the drilling position, and the marking line position reading device work together to control the switch operation. Therefore, since the long holes can be automatically drilled, the inefficiency and danger of the conventional long hole drilling work can be eliminated, and the labor of the operator can be significantly reduced. Further, conventionally, drilling a long hole using a corner chisel required labor and was limited to people with strong physical strength, but the present invention makes it possible for even weak elderly men, women and women to carry out this type of work.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is an external perspective view showing the electric angle chisel in a state in which the drilling position is read, and FIG. 2 is an external perspective view showing the state in which the electric angle chisel is set for drilling work after reading the drilling position. It is a diagram. 3A to 3C are plan views illustrating the drilling position reading operation, FIG. 3D is a perspective view of the grip, and FIG. 4 is a block diagram of the control section including the recognition device and read/write storage device. be. Fifth
The figure is a flowchart showing the operator's procedure and control operation, and FIG. 6 is a flowchart showing in detail the elongated hole drilling position setting process shown in FIG. In the figure, 1 is a cone motor, 2 is a corner only, 3 is lumber, 4 is a slide frame, 5 is a column, 7 is a cone lifting motor, 9 is a base, 12 is a slide frame feed motor, 19 is a handle, 21 is a scale, 22 is a scale reader, 25 is a drilling position reading gauge, 26 is a marking line, 27, 28
is a switch, 29 is a recognition device, 31 is a read/write storage device, 20 is a read-only storage device,
51 is an arithmetic processing unit.

Claims (1)

[Claims] 1. A vise that clamps lumber, a base that holds the vise in a loose manner, a slide frame that is movable relative to the base, a slide frame feed motor that moves the slide frame, and a slide frame that moves the slide frame. An attached column, a corner that moves forward and backward into the timber guided by the column to make a hole, a drill motor that rotationally drives a cone in the corner, and a cone lift that moves only the corner back and forth. The electric corner chisel is equipped with a dynamic motor, moves the slide frame, matches the position of only the corner with a marking line drawn on the surface of the lumber indicating the drilling position, and moves only the corner forward and backward to make a hole. , a scale and a scale scale reader respectively attached to the base and the slide frame, a switch manually operated by matching the position of only the corner to the position of the marking line indicating the drilling position, and operation of the switch. A read/write storage device stores information read from the scale by the scale reader as position information only for corners, and a drive control order of the slide frame feed motor, the drill motor, and the drill lift motor is written in advance. a read-only storage device and an arithmetic processing unit, and the read-only storage device logically processes the information in the read/write storage device with the arithmetic processing unit, and controls the slide frame feed motor, the drill motor, and the drill lift motor. An electric angle chisel machine characterized by a controlled drive.