JPH02122Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention is a hole wall of a stepped hole for equipment mounting provided on the panel surface when installing a lighting equipment or an air conditioner outlet on a panel such as a ceiling board. This is an invention related to a hole wall marking tool used for forming holes.

[Prior art]

A large free cone is used to provide large-diameter mounting holes when installing lighting equipment or air conditioning equipment on ceiling panels, etc., but it is also possible to expand a part of the mounting hole to make it a stepped hole. There were no tools involved, and the stepped parts were removed using a cutting tool such as a woodworking chisel.

[Problem that the invention attempts to solve]

As mentioned above, in the conventional method, when forming mounting holes for installing lighting and air conditioning equipment on the ceiling board, there was no suitable tool to step the hole wall, and the area around the wall of the mounting hole was made with woodworking tools. It is carved into a stepped shape.

However, when cutting with a woodworking chisel or the like, it is extremely difficult to process the step part and the work is troublesome, and the finishing accuracy is poor and the ceiling board may be damaged during the process.

[Means for solving problems]

This device was devised in order to solve the above-mentioned problems.The object surface 2 facing the object to be cut is formed into a protruding arc shape on the board surface of the substrate 1, and the scoring blade is directed outward from the arc-shaped surface. ₃ Adjust the distance between the base 1 and the turret 4 by moving the tool rest 4, which can be freely put in and taken out and the blade 3 is installed, toward or away from the board surface of the board 1 using the support member 5 of the board 1. It is something that can be freely done.

[Effect]

When installing lighting and air conditioning equipment on a ceiling board, etc., first use a free drill or a retractable saw to make a large diameter hole so that the device body B fits into a predetermined position on the ceiling board A. (Fig. 6), and then adjust the distance between the tool rest 4 and the substrate 1 of the ruled drawing tool of the present invention so that the ruled line can be placed at a predetermined position on the hole wall _D1 . The cutting depth of the scriber blade ₃₁ of the blade body 3 is also adjusted, and the board 1 is placed on the ceiling plate A, the tool rest 4 is positioned in the mounting hole D, and the objective of the tool rest 4 is placed on the ceiling plate A. Place the surface 2 in contact with the hole wall D ₁ of the mounting hole D and the scriber blade 3 ₁ in strong contact with the hole wall D ₁ (Figures 4 and 5), and then place the board 1 on the ceiling plate A. If the scoring blade ₃₁ is made to cut into the hole wall _D1 while rotating around the mounting hole D, a ruled line C can be attached to the hole wall _D1 .

If the cut of the ruled line C is continued until the objective surface 2 of the tool rest 4 comes into contact with the hole wall _D1 , the ruled line C of a predetermined depth can be accurately, reliably, and simply and easily made (see Fig. 7). Figure 8).

After that, cut a chisel for woodworking toward the ruled line C from the side of the plate where the stepped portion D ₂ is to be formed, and cut out the removed portion E to form the mounting hole D having the stepped portion D ₂ (Fig. 9). ).

Once the stepped mounting hole D is formed, the target device body B is engaged with the mounting hole D, and the flange _B1 of the device body B is locked to the stepped portion _D2 , and the device body B can be easily and easily attached to the ceiling plate A. (Figure 10).

The procedure for cutting into the hole wall D ₁ with the scoring blade 3 ₁ is to bring the cutting edge of the scoring blade 3 ₁ and the objective surface 2 of the tool rest 4 that is farthest from the cutting edge into contact with the hole wall D ₁ , and then cut the mounting hole. Cut the scoring blade 3 ₁ into the hole wall D ₁ while circulating inside D,
As the cut progresses, the cutting edge and tool rest 4 mentioned above
As the distance between the contact point of the objective surface 2 and the hole wall D ₁ is shortened, the cutting depth of the blade 3 becomes deeper, and eventually the part that supports the blade 3 touches the hole wall D ₁ and reaches a predetermined position. Create a reasonable ruled line C with a depth of .

〔Example〕

An embodiment of this invention will be described based on the attached drawings.

1 is a horizontally long board; 4 is a tool rest whose objective surface ₂ is a semicircular plate; stand 4
The support hole 4 faces toward the arc-shaped objective surface 2 from the string part.
₁ is provided, and the elongated plate-shaped blade 3 is inserted into this support hole ₄₁ , and the tool rest 4 is inserted from the objective surface 2 side.
Position the liner blade ₃₁ so that it protrudes outward from the turret 4, and firmly abut the blade 3 against the wall of the support hole 41 with a screw ₄₂ from the outer surface of the tool rest ₄ and fix it. It is something.

Therefore, the scoring blade 3 ₁ is used to adjust the exposure state of the scoring blade 3 ₁ from the tool rest 4 by tightening and loosening the screw 4 ₂ .

Note that the locking of the blade 3 to the tool rest 4 is not limited to that in the embodiment, but may be any type as long as the blade 3 is adjustable and lockable.

The above-mentioned tool rest 4 is loosely fitted onto two screws 51 which are supporting bodies ₅ protruding from the inner surface of the base plate 1, and is fitted with a nut ₅₂ from the outer surface and a lock nut ₅₃ from the inner surface. To adjust the distance between the turret 4 and the board 1, loosen the lock nut ₅₃ and move it largely toward the board 1, then turn the nut ₅₂ clockwise or counterclockwise to move the turret 4. When the distance to the substrate 1 is the desired distance, tighten the lock nut ₅ again.
This is to tighten the rules.

In addition, in the case where the tool rest 4 is installed on the base plate 1 by means of a support whose distance can be adjusted, the screw method is used in the embodiment, but this is not limited to the embodiment. It is not limited to the embodiment as long as it is a supporting method that allows the interval to be adjusted.

1 ₂ is a window provided on the tool rest 4 of the board 1 in the part opposite to the scoring blade 3 ₁ , and if it is possible to see through the ruled area and check the condition of the ruled line during the marking work. good.

A turret 4 provided on the surface of the substrate 1 facing the turret 4
The recess ₁₃ , which has the same shape as
This made it possible to get closer to.

6 is a grip provided on the substrate 1.

Of course, the above-mentioned present invention can be used not only for processing equipment mounting holes in a ceiling plate but also for forming a stepped portion in a circular hole.

[Effect of idea]

As mentioned above, this idea is based on the inconvenience that conventionally the work of processing equipment mounting holes so that equipment can be installed more easily is done by hand, resulting in poor dimensional accuracy and long working time. However, according to this invention, the holes are lined with lines to facilitate the machining of the mounting holes, and since the object surface of the tool rest is arc-shaped, the inside of the mounting holes can be easily machined. The turret rotates smoothly, and the scriber blade of the blade can gradually cut into the material to be cut, so there is no strain on the cut, and the scriber blade can also adjust the cutting depth to avoid errors. It does not form a stepped shape.

Furthermore, since the position of the ruled lines can be adjusted, the desired step size can be obtained.

[Brief explanation of the drawing]

The drawings are diagrams showing an embodiment of the present invention; FIG. 1 is a front view, FIG. 2 is a bottom view, FIG. 3 is an enlarged sectional view taken along the - line, and FIG. 4 is a diagram illustrating how to use the proposed ruled tool. FIG. 5 is an enlarged sectional view of the ruled portion, and FIGS. 6 to 10 are diagrams illustrating the order of forming steps in the mounting holes. 1...Substrate, 1 ₁ ...Plate surface, 1 ₂ ...Window, 2...Objective surface,
3...blade body, 3 ₁ ...scoring blade, 4...turret, 4 ₁ ...support hole, 4 ₂ ...screw, 5...support body, 5 ₁ ...screw, 5 ₂ ...
Natsutto, 5 ₃ ... Locknuts.

Claims (1)

[Claims for Utility Model Registration] 1. On the board surface 1 ₁ of the substrate 1, the object surface 2 with the object to be cut is in a convex arc shape, and there is a scoring blade 3 extending outward from the object surface 2.
A _hole wall marking tool characterized in that a tool rest 4 having a blade 3 that can be freely taken in and taken out is supported by a support member 5 of a substrate 1 in a manner that allows the interval to be freely adjusted with respect to the plate surface ₁ of the base 1. . 2. The hole wall marking tool according to claim 1, wherein the support body 5 comprises a screw 5 ₁ , a nut 5 ₂ and a lock nut 5 ₃ . 3. The hole wall marking tool according to claim 1 of the utility model registration stand, characterized in that the blade plate 3 is secured to the support hole 4 ₁ of the tool rest 4 with screws 4 ₂ . 4. The hole wall scribing tool according to claim 1, wherein the substrate ₁ has a window ₁₂ in a portion facing the scribing blade 31 of the tool rest.