JPH11114903A - Device for forming vertical hole in wood - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device for forming a vertical hole of a predetermined depth in a lower portion of a wood simply, quickly and highly accurately. SOLUTION: Stoppers 1a, 1b are provided that can protrude into a transfer path 6 for a wood (b) so as to be brought into abutment with a front end of a wood (b) being transferred to thereby regulate a wood material stop position, and a gripping means 2 is provided in the vicinity of the stoppers for fixing a wood material so as to coincide with the longitudinal center of a wood material. A hole forming means 3 is then provided on a lower side of the transfer path for forming a vertical hole (m) in a lower side of the wood and a detection means 4 is provided on this hole forming means 3 for controlling the depth of a hole so formed by a hole forming tool 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vertical drilling apparatus for wood, which can easily and precisely perform a predetermined vertical drilling on the lower side of wood.

[0002]

2. Description of the Related Art At present, connecting members such as beams, girders and columns used in wooden houses is generally performed through various fittings at joints thereof.

For example, when connecting a beam and a beam, FIG.
As shown in (1), a connection fitting e is attached to the girder d that receives the load, and the beam f to which the load is applied is fitted into the connection fitting e of the girder d and pinned.

Accordingly, the spar d and the beam f are provided with a counterbore hole g and a bolt hole h for mounting the connection fitting e.
In addition, a mounting hole i, a groove k having a predetermined width, a vertical vertical hole m, and the like for the connection fitting e are machined in advance.

However, among these, the vertical vertical hole m is formed by the operator measuring and working individually on the beam f using a jig. This causes inconvenience.

Further, as described above, the measurement and marking by the worker for each piece of wood are extremely inefficient in work efficiency, and cannot be performed in a short period of time for drilling a large amount of wood.

Further, a drill used for the vertical vertical hole m is used after being polished due to abrasion, chipping, or the like. With the polishing, the position of the upper surface of the drilling tool changes. However, this change causes a change in the depth of cut into the wood, resulting in variations in processing accuracy. And other various problems.

[0008]

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and is a stopper for freely coming and going in the middle of a timber transfer path and abutting against a timber transfer front end to regulate a timber stop position. And a gripper for fixing the wood so as to coincide with the center line of the wood in the longitudinal direction in the vicinity of the stopper, and drilling a vertical hole below the lower surface of the wood under the transfer path. In addition to providing means for detecting the depth of drilling by the drilling tool, a means for controlling the depth of drilling by the drilling tool is provided, so that vertical drilling of a predetermined depth with respect to the lower side of the wood can be performed easily, quickly, and at high speed. It is an object of the present invention to provide a vertical drilling device for wood that can be accurately performed.

[0009]

Means of the present invention for achieving the above object are provided so as to be able to protrude and retract in the middle of a timber transfer path, and abut on the front end of the timber transfer to regulate a timber stop position. A stopper, a gripping means provided at an appropriate position on the center of the timber transfer path in the vicinity of the stopper, and fixing the timber so as to coincide with the longitudinal center line of the timber; A hole drilling means for drilling a hole perpendicular to the lower surface of the timber, with the hole cutting tool facing the center position of the transfer path, arbitrarily moved in the longitudinal direction, and the hole drilling tool; Detecting means for controlling the depth of drilling by the drilling tool provided in the drilling means.

The drilling means has a steadying means provided near the lower surface of the wood in the transfer path and holding the outer peripheral portion of the drilling blade.

Further, in the drilling means for detachably providing a drilling tool to the chuck of the driving means, the drilling tool is provided so as to be detachable above the drilling knife in the transfer path, and the drilling tool is attached to the chuck. Positioning means for setting the mounting position is provided.

Further, the detecting means stops the movement of the drilling means in the longitudinal direction when the detecting means detects the amount of movement in the longitudinal direction of the same amount as the set depth of the drilling in conjunction with the drilling means. .

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of a vertical wood drilling apparatus according to the present invention will be described with reference to the drawings.

In FIG. 1 to FIG. 3, A is a vertical wood drilling apparatus according to an embodiment of the present invention. For example, as shown in FIG. 4, in a frame of a wooden house, connecting members such as beams f and girders d. Used for forming a hole i and a groove k for attaching a connecting fitting e used in the process,
a, 1b, gripping means 2, drilling means 3, detecting means 4, and control means 5 are basically constituted.

The above-mentioned stoppers 1a, 1b are provided in the middle of the timber b transfer path 6 at a position before and after a hole punching means 3 (line tt shown in FIG. 2). Are provided so as to be freely retractable into and out of the transfer path 6 for the wood b by the rotation of the support shafts 8a and 8b, and contact the front end of the transfer of the wood b to regulate the stop position of the wood b. As shown in the figure, the contact pieces 7a and 7b which are raised and lowered by operating members 10a and 10b such as fluid cylinders attached to the body 9 are individually operated to
When one of a and 7b abuts on the edge of the wood b, a fixing position by the gripping means 2 described later is determined.

Thus, a standard for determining the processing position from the edge of the wood b hitting the stoppers 1a and 1b is obtained. In this case, the wood b at the front edge and the rear edge of the wood b is obtained. Positioning can be performed in the same flow direction.

The stoppers 1a and 1b can be used to move the abutment pieces 7a and 7b to the support shafts 8a and 8b or
By providing the entire stoppers 1a and 1b so that they can move laterally,
Since the contact position with the end of the wood b can be changed, it is possible to adjust the perforation dimension in the length direction of the wood b.

In the transfer path 6, there is provided a transfer member 6a such as a roller which supports the lower surface of the wood b and can arbitrarily convey the wood b in the forward path and the return path. .

The above-mentioned gripping means 2 is provided at an appropriate position on the center position (pp-p line shown in FIG. 3) of the wood b in the transfer path 6 near the stopper 1, and the center of the wood b in the longitudinal direction is provided. The timber b is fixed so as to match the line (rr line shown in FIG. 4), and a pair of left and right vice members 2a,
The center of the wood b can be always set as the grip center on the transfer path 6 by the relative movement of the 2a around the pp line.

The above-described drilling means 3 is provided below the transfer path 6 so that a drilling tool 12 as a drilling tool faces the center position of the transfer path 6 and arbitrarily moves in the longitudinal axis direction. The movement is controlled, and a vertical hole m is formed in the lower surface of the wood b.

The moving body 15 is moved up and down to a vertical guide 13 provided on the side of the transfer path 6 in the machine body 7 by an elevating member 14 such as a fluid cylinder so as to be parallel to the height direction of the wood b. It is freely engaged.

Further, as shown in FIGS. 1 and 2, a driving means 16 such as a motor is attached to the moving body 15, and a drilling drill 12 having a predetermined diameter is attached to a rotating shaft 17 of the driving means 16. Is detachably supported by a chuck (collet type or the like) 18.

As shown in FIG. 1 and FIG. 5, the anti-sway means 1 for preventing the axial center of the drill 12 from swinging.
9 is attached.

That is, it is provided near the lower surface of the wood b in the transfer path 6 and holds the outer periphery of the drill 12. The drill 20 is attached to a support 20 attached to the machine body 7 via a bearing 21. A bush 22 made of synthetic resin or the like is provided so as to be in contact with the outer periphery of the drill, and the drill 12 is supported so as not to be eccentric.

A dust collector 23 for discharging cutting chips by the drill 12 is provided on the outer periphery of the steadying means 19, and a hose connected to a suction blower (not shown) or the like is provided. 24 is attached to the outlet 25.

When the detecting means 4 detects the amount of movement in the vertical axis direction equal to the set depth of the drilling in conjunction with the drilling means 3, the detecting means 4 detects the movement of the drilling means 3 in the vertical axis direction. The depth of the vertical hole m is controlled by the drill 12 which is a stop blade.

The structure is such that a plurality of sensors 26 such as a reflection type photoelectric tube are provided on the upper part of the moving body 15 and selectively used, or provided so as to be adjustable in the height direction.

When the reflected light of the light radiated from the sensor 26 toward the side of the wood b is not detected with the rise of the perforating means 3, the raising of the perforating means 3 is stopped and lowered. Let it.

In FIG. 7, reference numeral 30 denotes a positioning means which is detachably provided above the drill 12 as a drilling tool in the transfer path 6, and sets the mounting position of the drill 12 on the chuck 18. A contact receiving member 32 made of a soft material such as wood is provided below the main body 31 placed on the transfer member 6a, and the upper end of the drill 12 hits the lower surface of the contact receiving member 32. The time is defined as the mounting position of the drill 12.

That is, while the lower end of the drill 12 is temporarily fixed to the chuck 18, the drill 12 is slid upward and the upper end of the drill 12 hits the lower surface of the contact receiving member 32. Then, the drill 18 is fixed by the chuck 18.

The data of the thickness w of the contact receiving member 32 is input to the control means 5 in advance, and the depth of the hole can be calculated and corrected.

The drill 12 is used after re-grinding due to wear, chipping, or the like during processing. With the polishing, as shown in FIG. 8, the upper surface position of the drill 12 is changed. Changes with the polishing amount x.

However, according to the positioning means 30,
Stable machining accuracy can be obtained without changing the cutting depth in the wood b due to the above-mentioned polishing change x.

The control means 5 uses a conventional computer and is connected to each of the above-described means.

Therefore, according to the apparatus A and the method according to the embodiment of the present invention, the following effects are obtained. For example, when a beam b or a girder d, which is wood b in a wooden building, is to be framed by the connecting bracket e, A vertical hole m is previously formed in the wood b, and this operation will be described.

First, the timber b according to the purpose of use is transferred to the transfer path 6.
The processing data is input to the control means 5 in advance, and the stopper 1a is previously projected from the lower surface of the wood b by the operating member 10a.

For example, when a vertical hole m is formed in the beam f which is the wood b as shown in FIG. 4 with respect to the front side of the wood b, as shown by the solid line in FIG. The leading edge of the stopper 1
The processing position of the wood b is automatically obtained by abutting the abutting piece 7a of a. At this time, the wood b is fixed by operating the gripping means 2.

The position of the drilling means 3 to which the drill 12 is attached to the chuck 18 is previously set to an appropriate position by the positioning means 30.

The cutting depth of the drilling drill 12 into the wood b is determined in advance by the control means 5, as shown in FIG. 7, as the actual drilling depth x and the thickness w of the contact receiving member 32. , Ie, x + w is set, and the detecting means 4 is attached to the perforating means 3 to determine the actual perforating depth from the height H of the wood b. A value obtained by subtracting the sum of the dimension x and the thickness w of the contact receiving member 32, that is, H−x + w is set.

Further, the wood b is held by the gripping means 2 at the center position rr in the longitudinal direction thereof and the center position p-
When the drill 12 is raised toward the lower surface of the wood b by the elevating means 14, the drill 12 cuts into the lower surface of the wood b.

At this time, since the drilling drill 12 is supported by the steadying means 19 near the lower surface of the wood b so as to prevent the axial center of the drilling drill 12 from running, the drilling drill 12 is drilled straight. .

As the detecting means 4 attached to the upper part of the moving body 15 rises with the incision of the drill 12, the reflected light from the sensor 26 irradiating the side surface of the wood b is no longer detected. Therefore, at this time, the ascent and descent of the drill 12 by the elevating member 14 is stopped and lowered.

At a predetermined position on the lower surface of the wood b, a vertical hole m having a desired size is accurately formed.

When a vertical hole m is to be made in the same processing line (the same transfer path 6) also at the rear side of the same wood b (the left side position indicated by the phantom line in FIG. 6), the gripping means 2 is released. Then, the wood b is moved in the length direction (the direction of the arrow in FIG. 6) in the transfer path 6, and after passing through the position above the stopper 1a, the wood b is moved in a state where the abutting piece 7a of the stopper 1a is erected. Once retracted, this patch 7
The rear edge is brought into contact with a, and the wood b is fixed by the gripping means 2.

In the same step as the above-mentioned step, by performing the drilling operation, vertical holes m and m can be simultaneously formed in the front side and the rear side of the same wood b in the feeding step of the same wood b. And no troublesome work such as reversal of the wood b is required.

When the drill 12 is worn or chipped during use, it is reused by performing predetermined polishing. In this case, the size of the hole is reduced as shown in FIG. Produces a change x.

When the drill 12 is attached to the chuck 18 in this state, the dimension corresponding to the dimensional change x becomes small when the vertical hole m is formed.
Since inconvenience arises in assembling the connection fitting e, in the re-polishing, the mounting position of the drill 12 to the chuck 18 is set in advance by the positioning means 30 each time.

In FIG. 2, reference numeral 40 denotes a cover provided on one side of the processed portion of the wood b, which is formed by a net or the like to prevent scattering of chips and the like.

[0049]

According to the present invention constructed as described above, the wood to be processed is positioned on a straight line where the drilling tool stands by the gripping means, and the position of the hole to be drilled from the leading edge of the wood is determined by the stopper. Since the setting is performed, the vertical drilling position and the cut in the wood can be performed by continuous automatic work, so that the work efficiency is greatly improved.

Since the drilling means is provided with a steadying means for the drilling tool, the vertical drilling of the wood is straightened without bending or warping.

Even if the drilling blade is polished due to wear, chipping, or the like, and the upper surface position of the drilling blade changes, the mounting position of the drilling blade to the chuck is determined by the positioning means corresponding to the lower surface position of the wood. By making appropriate adjustments, it is possible to obtain a constant processing accuracy without changing the cutting depth in the wood, in accordance with the change in the upper surface position of the drilling blade caused by the change in polishing. And the like.

[Brief description of the drawings]

FIG. 1 is a partially cutaway front view showing an embodiment of an apparatus employing a wood processing method according to the present invention.

FIG. 2 is a schematic side view of FIG.

FIG. 3 is a schematic plan view of FIG.

FIG. 4 is a perspective view of a structural material showing an example of a hole processed by the apparatus in FIG. 1;

FIG. 5 is a front view showing the steadying means and the dust collecting body of the apparatus in FIG. 1;

FIG. 6 is a side view showing a relationship between a stopper and a punching unit in FIG. 1;

FIG. 7 is an explanatory view showing positioning means corresponding to a drill in the apparatus shown in FIG. 1;

FIG. 8 is an explanatory view showing a polished state of a hole drill of the apparatus in FIG. 1;

[Explanation of symbols]

 b Wood 1a, 1b Stopper 2 Gripping means 3 Drilling means 4 Detecting means 6 Transfer path 12 Drilling blade 19 Sway-stopping means 30 Positioning means m Vertical hole

Claims (4)

[Claims] Claims: 1. A timber is provided so that it can come and go in the middle of a wood transfer path,
A stopper that abuts against the front end of the timber to regulate the stop position of the timber, and is provided at an appropriate position on the center of the timber transfer path near the stopper so that the timber coincides with the longitudinal center line of the timber. Gripping means for fixing the timber to the lower surface of the timber, the lower surface of the timber being arbitrarily moved with respect to the longitudinal axis direction with the drilling tool provided below the transfer path facing the center position of the transfer path. A vertical hole drilling device, comprising: a hole drilling device for drilling a vertical hole, and a detecting device provided in the hole drilling device to control the depth of the hole drilled by the hole drilling tool. 2. The vertical wood drilling apparatus according to claim 1, wherein the drilling means includes a steadying means provided near a lower surface of the wood in the transfer path and holding an outer peripheral portion of the drilling blade. . 3. A drilling means for detachably providing a drilling tool to a chuck of a driving means, wherein said drilling tool is detachably provided above said drilling blade in a transfer path, and said drilling tool is attached to said chuck. 2. The vertical wood drilling device according to claim 1, further comprising positioning means for setting an attachment position. 4. The detecting means, in conjunction with the drilling means, detects a vertical movement amount equal to the drilling set depth,
2. The vertical wood drilling device according to claim 1, wherein the movement of the drilling means in the longitudinal direction is stopped.