JPS64245Y2 - - Google Patents

Description

[Detailed description of the invention] This proposal relates to the invention of a drilling jig, which is designed to prevent the vibration of the drilling unit itself and the workpiece, especially when working with thin drills, reamers, taps, etc. in conventional drilling operations. In addition, the external vibrations make it difficult to work with the drill, tap, etc., and especially when machining work is performed directly by hand using a drill unit, the above-mentioned difficulty of work and especially when using small-diameter tools. In the case of a reamer, it often breaks, and in the case of a reamer, it is difficult to post-process the fold.

This project was devised in response to the above-mentioned defects, and is intended to improve work efficiency and improve overall machining efficiency by preventing tool breakage. This is an idea related to.

One embodiment of the present invention will be described with reference to the drawings. First, as shown in FIG. 1, H is a conventionally known drilling unit, and a tool (drill) T is fixed to the lower part thereof. Further, as shown in FIGS. 1 and 2, S is a drilling jig according to the present invention, which is composed of a mounting portion 1, guide tubes 2, 2', and a setting member 3. Reference numeral 1 denotes a mounting member for the drilling jig S, which has an annular shape, and the inner hole 5 has a perfect circular shape. It is assumed that it is fixed at H. Reference numeral 4 denotes a plurality of convex portions (three) protruding outward from the mounting portion 1 and arranged at approximately equal angular intervals. FIG. 3A shows a cross section taken along the line A-A' in FIG.
It is screwed 7 to the lower piece 6 of the. 8 and 9 are a large-diameter port and a small-diameter port, respectively, and 10 is a sliding pin that slides along the large-diameter port 8 and small-diameter port 9,
11 is a spring.

Also, Figure 3B shows a cross section taken along the line B-B' in Figure 2, and shows the two guide tubes 2 in the case of Figure 3A.
Unlike, this one 2' length is the mounting member 1.
A convex portion 12 is formed in the lower part of the protrusion 12, and the upper end portion is fitted into the convex portion 12, and the plate spring 13 is fixed by being removably screwed 14 thereon. The lower end portions 15 of the two sliding pins 10 described above are caulked 15 after being screwed into the setting member 3, and the guide tubes are attached using the leaf springs 13 described above. The length of the lower part 15' of the sliding pin 10' that slides into the inside of the guide tube 2' is such that the guide tube 2' is landed 13 after being inserted from the insertion opening 16 as shown in FIG. 3B. being done. In this way, the setting member 3 is arranged by the three sliding pins 10, 10, 10', but it goes without saying that the shape does not have to be a regular triangle depending on the purpose of use and location. do not have.

As explained above, in the present invention, the mounting member 1 is attached to the tapered part h of the conventional commercially available punching unit H.
It is easy to assemble because it is long enough to fit the inner hole taper 5 formed in the inner hole of the workpiece W, and since the work is performed after setting the setting member 3 on the workpiece W, it is easy to assemble. It goes without saying that the work is much easier to do than when done by hand, that is, the center of the tool can be placed in the position of the treatment center, and it is effective in preventing vibration. , and therefore has the practical effect of preventing breakage of small-diameter tools such as drills, taps, reamers, etc.

[Brief explanation of the drawing]

The figures show an embodiment of the present invention, and FIG. 1 is an overall perspective external view of the drilling jig S according to the invention attached to the lower taper h of a conventional commercially available drilling unit H; The figure is a perspective external view of the drilling jig S, and FIGS. 3A and 3B are sectional views taken along the lines A-A' and B-B' in FIGS. 2A and 3B, respectively. 1... Mounting member, 2, 2'... Guide tube, 3...
Set member, 4, 4'...protrusion, 5...inner hole, 6
...Lower piece, 8...Large diameter port, 9...Small diameter port, 1
0,10'...Sliding pin, 11...Spring,
12... Convex portion, 13... Leaf spring (landing), 16...
...insertion port, H...perforation unit, h...lower taper of conventional commercially available perforation unit H.

Claims (1)

[Scope of utility model registration request] The mounting member 1 has an inner hole 5 formed with a taper to fit with the lower taper h of the drilling unit H, and a plurality of outwardly facing convex portions 4, each having a large diameter hole 8 and a small diameter hole 9. The upper portions of a plurality of guide tubes 2, 2' containing sliding pins 10, 10' that slide up and down in the large diameter hole and the small diameter hole are screwed into the lower piece 6 of the mounting member 1. At the same time, a spring 11 is inserted into the lower part of the sliding pin, and the lower part is screwed onto the setting member 3, and the plurality of guide cylinders 2, 2'
The upper part of one of the sliding pins is inserted into the convex part 12 of the mounting member 1 to be attached 13, and the lower end of the sliding pin is inserted into and taken out from the insertion opening 16 of the setting member. A drilling jig characterized by: