JPS6274513A - Portable drilling machine for hinge mounting hole - Google Patents

Abstract

PURPOSE:To enable the improvement of drilling accuracy and working efficiency by moving a multi-axis box and drilling a frame on a stable horizontal posture after projecting the frame contact surface to the vertical processing surface of a door frame and fixing the frame with a positioning jig. CONSTITUTION:With a drilling machine supported by a handle 3 and a grip 17, the projected part 24a thereof is coupled to a base hole S and the machine is made free. Then, a downward rotational force works about the projected part 24a, due to the weight of the machine, thereby making available a temporary fixed condition wherein the frame contact side 5 of a front frame 1a is pressed to the drilling surface W of a door frame F. Concurrently, a tool 22 aligns with the position of a hinge hole to be drilled on the door frame F, and an alignment jig 24 prevents the machine from falling off the door frame F. Then, when an operation handle 7 is actuated to advance a multi-axis box 2, the tip cutter of the tool 22 projects beyond the front frame 1a of a frame 1, thereby enabling the high precision and efficient counterboring next to drilling concurrently.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a portable hole punching machine which has the characteristics of a dedicated machine and can simultaneously drill a plurality of hinge mounting holes in 8 steel door frames and the like.

C. Prior Art] For example, when one wing plate of a hinge T is stacked on the inside of a steel door frame F and tightened with a screw B as shown in Fig. 6, a plate-shaped hinge mounting hole is first formed in the door frame F. I will open H. Conventionally, when drilling holes, a hole centering jig is prepared that has holes corresponding to the number of hinge mounting holes I to be drilled (four in the example).
Lean the door D so that the drilling surface W is horizontal,
Thereafter, the jig is fitted into a positioning reference hole S for hinge insertion, which is provided in advance on the door frame F, and is set at a predetermined position on the drilling surface W of the door frame F.

Next, after marking a hole center mark on the drilling surface W of the door frame F from the hole of the jig, remove the jig and use a hand-held electric drill (drill gun) to mark the mark on the door frame F. After drilling holes one by one with an awl.

A counterbore was being processed using a hole-drilling knife.

[Problem that the invention seeks to solve]

The first problem to be solved by the present invention is that in the conventional work described above, the door is placed in a standing position so that the drilling surface W of the door frame F is horizontal.

An electric drill is used by standing straight on the drilling surface W, but in such a case, the door D tends to fall over and is unstable, making drilling work difficult.

The second problem is that in the conventional drilling operation described above, the plurality of hinge mounting holes H are sequentially drilled one by one, which is inefficient.

vJ3 is that the above-mentioned conventional work requires a hole centering jig, and furthermore, when using the jig, a troublesome marking work is required.

[Means for solving problems]

In order to solve the first problem mentioned above, in the present invention, as shown in FIG. 1, the door D is laid horizontally so that the perforated surface W of the door frame F is vertical.

The frame 1 is removably attached by abutting the frame abutment surface 5 provided on the front side of the frame 1 against the perforated surface W of the door D, and the multi-axis box 2 is movable in the front and rear directions on the frame 1. It will be incorporated.

In order to solve the second problem, in the present invention, the driving spindle 11 and a plurality of tool spindles 12 corresponding to the number and arrangement of the hinge mounting holes H to be machined are arranged in parallel in the multi-axis box 2. A plurality of tool spindles 12 are rotatably driven from the driving spindle 11 via a transmission mechanism, and each tool spindle 12
A tool 22, such as a stepped drill or a tap, which can also be used to counterbore the fs number to be machined according to the shape of the ignition H, is attached to the front end of the tool. The driving spindle 11 includes a hand-held electric drill 17 mounted on the frame 1. Alternatively, power is supplied from a drive actuator such as a motor.

As a transmission mechanism, gear transmission or winding transmission is used.

In order to solve the third problem, one aspect of the present invention is as follows.

Tools 22 are installed in the door frame F to correspond to the number and arrangement of hinge mounting holes H to be machined in the multi-sleeve box 2.
A positioning fixture 24 is attached for fixing the frame abutting surface 5 of the frame 1 against the drilling surface W so as to match a predetermined position on the drilling surface W.

[Effect]

The frame l is positioned by the fixture 2 by aligning the frame abutment surface 5 of the frame 1 against the perpendicular drilling surface W of the door frame F.
4 and then move the multi-axis box 2 on the frame 1 in the front-rear direction, the drilling work can be easily performed with the door D in a stable position lying horizontally.

In addition, by rotating the tools 22 on the multi-axis box 2 all at once and moving the multi-axis box 2 forward by operating the handle, multiple hinge mounting holes H can be simultaneously drilled at predetermined positions on the door frame F. .

Furthermore, a fixture 24 for positioning the frame 1 on the door frame F
When installed with the handle, the tool spindle machining tool 2 can be adjusted to the number and arrangement of the holes H to be machined on the door frame F, allowing accurate hole drilling without the need to use a cumbersome hole centering jig like in the past. Processing can be performed.

[Example] FIG. 5 is a perspective view showing a part of a steel door drilled by a processing machine according to the present invention.

Four dish-shaped hinge mounting holes H are drilled in the door frame F. FIG. 6 is a sectional view of one side of the hinge T attached to the inside of the door frame F.

1 to 4 show a specific example of a processing machine according to the present invention, which includes a frame 1 that is removably attached to the hole-machined surface W of a door frame F, and a frame 1 that is installed in the frame 1. It has a multi-axis box 2.

The entire frame 1 is formed in the shape of a rectangular frame, and a bottom wall 1e is formed on the bottom side between the front, left, and right frame portions 1a, 1b, IC, and 1d. This frame l also includes a grip 17 of an electric drill body 17, which will be described in its entirety later.
In order to make it easier to hold with a, the left and right frame IC
- A concave handle 3 is attached to the upper side of the rear part 1d.

Furthermore, as shown in Fig. 1, an example of the drilling process, the doors D are stacked in a stair-like manner, and holes are drilled from the top door D to the bottom doors D in sequence (when the frame 1 A notch 4 is provided on the lower surface of the front frame 1a to prevent the lower surface of the front frame 1a from contacting and interfering with the door D immediately below the door D to be processed.

The front left and right ends of the front frame portion 1a are provided with the perforated surface W of the door frame F.
The frame groove faces 5, 5 are formed to abut against each other in a butt-like manner.

Two left and right guide shafts 6,6 are installed between the front and rear frames 1a, Ib in the frame 1, and these guide shafts 6,6
The multi-axis box 2 is inserted through and supported so as to be movable in the front and rear directions.

As a means for moving the multi-axis box 2 back and forth, an operating handle 7 is pivotally supported on the outside of the right frame portion 1d of the frame so as to be swingable back and forth around a shaft 8. A pinion 9 is fixed to the end of a shaft 8 protruding into the frame 1 of the operating handle 7, and the pinion 9 is meshed with a rank 10 fixed to the lateral side of the multi-shaft box 2 in the front-rear direction. Thus, when the operating handle 7 is swung in the backward direction of arrow A from the forward tilted state shown in FIG. 2, the multi-axis box 2 moves forward along the guide shaft 6.

The multi-spindle box 2 has a horizontal drive spindle 11 in the front-rear direction at its center, and four tool spindles 1 around the drive spindle 11.
2 are respectively arranged parallel to the driving main shaft 11.

The driving spindle 11 and the tool spindle 12 are supported by the front cover 2a and rear wall 2b of the multi-spindle box 2 via bearings, respectively. The rear end of the driving spindle II protrudes further rearward from the rear wall 2b of the box 2, and the front end of the tool spindle 12 protrudes further forward from the front cover 2a of the box 2.

The tool spindle 12 is set to have the same number and arrangement as the number and arrangement of threaded mounting holes H to be machined as shown in FIG.

The rotation of the driving spindle 11 is connected to the tool spindle 12 in the multi-axis box 2.
It has a built-in transmission mechanism that transmits the information. for example.

As shown in FIG. 4, the driving gear 15 fixed on the driving spindle 11 and the driven gear 16 fixed on the tool spindle 12 are meshed, so that all the tool spindles 12 simultaneously move one driving spindle 11 in the same direction. It is assumed that rotational driving is possible through these gears 15 and 16.

Incidentally,! If the pinch between the I71 mounting hole and the ignition H is small, the distance between the tool spindles 12 and 12 must be set to a smaller position at the same pitch. In that case,
A problem may occur in which the driven gears 16 come into contact with each other. Therefore, as shown in FIG. , a gear arrangement is adopted in which the rear driving gear 15 meshes with the remaining non-adjacent driven gears 16, 16, respectively.

Power is supplied to the driving spindle 11 using, for example, a conventionally used dedicated or general-purpose hand-held electric drill. That is, only the tool is removed from the electric drill body 17, and the electric drill body 17 is removably attached to the holder 18 provided on the multi-axis box 2 from the rear. A chuck portion 19 at the front end of the electric drill body 17 is connected to a rear end portion of the driving main shaft 11. The holder 18 has an annular portion 18a at its rear end through which the electric drill body 17 is inserted, and the electric drill body 17 is fixed by tightening the annular portion 18a with a screw 20.

A tool 22 is attached to the front end of the driven spindle 12, and if the hinge mounting hole H to be machined is a molded hole as shown in FIG. Use a stepped drill with a cutting edge. However, a tap is used when simply machining a screw hole.

If a tap is used as the tool 22, an electric drill or motor capable of forward and reverse rotation will be used.

When the multi-axis box 2 is in a retracted state and is not in use, the tip end of the tool 22 is housed in a hole 23 formed between the frame abutment surfaces 5 and 5 of the front frame portion 1a of the frame 1. When in use, as the multi-axis box 2 is advanced with the operating handle 7, the tip end of the tool 22 touches the front frame portion 1a of the frame l.
Protrude further forward. Further, in order to use the above-mentioned stepped drill as the tool 22 to simultaneously perform hole drilling and counterbore processing with high precision, a stopper means for regulating the forward movement limit of the multi-axis box 2 is provided. As one means for this stopper, for example, a C-shaped lug-shaped stopper 30 is tightened and fixed at a predetermined position on the guide shaft 6 as shown in FIG.

The frame 1 is provided with a positioning and fixing means so that the frame 1 can be easily and accurately attached to a predetermined position on the perforated surface W of the door frame F.

Regarding this positioning and fixing means, 1. For example, in the case of a type in which the hinge T is attached to the inside of the door frame F as shown in FIGS. Since the reference hole S is provided in advance, the reference hole S is used. A positioning fixture 24 is detachably fixed to the upper surface side of the front frame portion 1a of the frame 1 with screws 27 so as to project forward.

A protrusion 24a is provided on the lower surface of the positioning fixture 24 that protrudes from the front frame portion 1a. Now, after supporting the processing machine with the handle 3 and grip 17a in hand and engaging the protrusion 24a with the reference hole S, when you release your hand from the processing machine,
The installation is in a fixed state in which the entire processing machine exerts a downward rotational force around the protrusion 24a due to its own weight to press the frame contact surface 5 of the front frame portion 1a into contact with the drilling surface W of the door frame F. is obtained. At the same time, a state is obtained in which the tool 22 matches the position of the hinge mounting hole to be machined on the door frame F.

In this embodiment, the positioning fixture 24 integral with the frame 1 engages with the positioning reference hole S, the second positioning fixture 24 has the function of preventing the processing machine from separating from the door frame F. It also demonstrates.

However, as a positioning means for a door frame F without the reference hole S, for example, one side β of the door frame F as shown in FIG. A positioning tool that can be removably engaged and fixed onto F may be used.

In these cases, the positioning fixture 4 is detachable from the frame 1, so even if the specifications of the hinge T are different (the processing positions of the hinge mounting hole H are different), multiple types of the positioning fixture 24 can be prepared. If you do this, you can handle this well.

It goes without saying that the positioning fixture 24, which is a requirement of the present invention, is not limited to the form shown in the two figures, but may be modified as appropriate, such as using an electromagnet.

〔Effect of the invention〕

As explained above, according to the present invention, the frame 1 incorporating the multi-axis box 2 that is movable in the front and back direction perpendicular to the vertical drilling surface W of the door frame F is removably attached to perform the drilling process. Therefore, the drilling work can be easily performed in a stable position with the door D lying horizontally, and the workability can be improved. In particular, this work can be carried out with great efficiency when a large number of doors D are stacked in a stair-like manner.

Since the tools 22 in the multi-axis box 2, which is built into the frame 1 so as to be horizontally movable in the front-rear direction, are rotated all at once, and the multi-axis box 2 is moved forward by operating the handle, there are multiple hinge mounting holes. I] can be opened at the same time, saving labor during on-site construction. In this case, tool 2
If you use a stepped drill for step 2, the s number ignition H will be
The plates can be processed at the same time, which further improves work efficiency.

By attaching the frame 1 to the door frame F with the positioning fixture 24, the tool spindle 12 can be aligned with a predetermined position on the drilling surface W, thus eliminating the need for the conventional hole centering jig. In addition, it is possible to perform accurate drilling, thereby improving machining accuracy and workability. Furthermore, it is easy to handle by simply operating the handle, does not require any skill, and can be carried out with light work, which also improves workability.

[Brief explanation of drawings]

The drawings show an embodiment of the drilling machine according to the present invention, in which Fig. 1 is a vertical side view, Fig. 2 is an external perspective view, Fig. 3 is a plan view, and Fig. 4 is an IV in Fig. 3. -IV line sectional view, Figure 5 is a perspective view showing a part of the door frame in which the hinge mounting hole has been processed, and Figure 6 is a sectional view showing the state in which the hinge is installed inside the door frame. . 1...Frame. 2...Multi-axis box. 3...Handle. 4...Notch. 5... Frame contact surface. 6...Guide shaft. 7...Handle. 11... Driving spindle. 12... Tool spindle. 17...Electric drill body. 18...Holder. 19... Chuck part of the electric drill body. 22...Tools. 24...Positioning fixture. 24a... Protrusion. D... Door. F...Door frame. W...Drilling surface. H...Hinge mounting hole. S...Reference hole.

Claims (1)

[Claims] (1) A processing machine for drilling a hinge mounting hole H at a predetermined position on the perforated surface W of a door D which is laid horizontally so that the perforated surface W of the door frame F is vertical, the said perforated surface A frame 1 detachably attached to W;
It consists of a multi-axis box 2 built into a frame 1 so as to be horizontally movable in the front-rear direction by operating a handle. Inside the multi-axis box 2, there is a driving main shaft 11 in the front-rear horizontal direction that receives power from a motor etc., and a machining main shaft 11. A plurality of tool spindles 12 corresponding to the number and arrangement of the hinge mounting holes H to be installed are arranged in parallel and supported rotatably, and the drive spindle 1
1 to all the tool spindles 12 at the same time, and the front end of each tool spindle 12 has a tool 2 such as a drill.
2 is attached, and a frame abutment surface 5 is formed on the front side of the frame 1 to be butted against the hole-drilling surface W of the door frame F, and the tool 22 is used to adjust the hole-drilling position on the hole-drilled surface W of the door frame F. A portable drilling machine for hinge mounting holes is provided with a positioning fixture 24 for abutting and fixing the frame abutting surface 5 of the frame 1 against the drilling surface W in accordance with the above.