JPH0617896U - Rotary operation device with heart needle - Google Patents

Abstract

(57) [Summary] [Purpose] Do not expand the small holes in the work,
Improve work accuracy. [Structure] The heart needle 3 and the working means 4 are provided separately from each other in the instrument body 2, the heart needle 3 is pushed toward the work, and the instrument body 2 is rotated about the axis O of the heart needle 3. By doing
In a rotary operation instrument with a heart needle, in which the working means 4 moves circularly about the axis of the heart needle to perform work on the work piece, the heart needle 3 is attached to the instrument body 2 and the axis of the heart needle 3 is It is rotatably mounted around O.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a rotary operation instrument such as a compass, a gasket cutter, etc. with a heart needle for performing work on an object by rotating it.

[0002]

[Prior art]

 As a conventional rotary operation instrument with a heart needle, for example, a gasket cutter as shown in FIG. 5 can be cited. This gasket cutter is a tool body consisting of a rod-shaped support iron 11 and two floating bodies 12, 12 provided on the support iron 11 so that the position thereof can be freely changed, and a core needle fixedly provided on one floating body 12. 13 and a working means 14 provided on the other floating body 12. The working means 14 is a cutter capable of cutting the gasket sheet S, which is the work piece.

When performing the cutting operation with this gasket cutter, first, the two floating bodies 12 and 12 are fixed to appropriate positions. Then, the instrument main body is rotated around the axis O of the heart needle 13 which is provided on one floating body 12 and is supported on the gasket sheet S, and the gasket sheet S is rotated by the working means 14. Cut into a circle.

[0004]

[Problems to be solved by the device]

 By the way, in order to cut out a plurality of large, medium, and small concentric ring-shaped sealing materials from one gasket sheet S, the two needles 12, 12 are left with the core needle 13 piercing at the same point on the gasket sheet S. It is necessary to change the interval and perform cutting work. However, in the case of the conventional fixed heart needle, the small hole is made in the gasket sheet S by making the heart needle 13 stand upright on the gasket sheet S. 13 also rotates with respect to the gasket sheet S, and the small hole formed in the gasket sheet S is expanded by the core needle 13 to become a stupid hole, and the core needle 13 wanders with respect to the gasket sheet S. However, there was a problem that the accuracy of the cutting work deteriorates and the circularity of the cut ring-shaped sealing material becomes low.

Therefore, an object of the present invention is to provide a rotary operating instrument with a heart needle that can improve the accuracy of the work without expanding the small holes formed in the work.

[0006]

[Means for Solving the Problems]

 According to the present invention, a heart needle and a working means are provided separately from each other in an instrument main body, and the heart needle is urged against an object to rotate the instrument main body around the axis of the heart needle. According to the present invention, in order to achieve the above object, in the rotary operation device with a heart needle, wherein the working means performs a circular motion around the axis of the heart needle to perform a work on the work, I took appropriate measures.

That is, the present invention is characterized in that the heart needle is provided on the instrument body so as to be rotatable about the axis of the heart needle.

[0008]

[Action]

 According to the rotary operation instrument with a heart needle of the present invention, when the heart needle is pierced against the work piece and the instrument main body is rotated around the axis of the heart needle, the heart needle causes frictional resistance with the work piece. As a result, the rotation is suppressed, the work is stationary with respect to the work, and the instrument body is rotated around the axis of the needle.

[0009]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 show an embodiment of the present invention, in which a rotary operation instrument 1 with a heart needle of the present embodiment is a gasket cutter, and includes a tool body 2, a heart needle 3, and a cutter. It is equipped with a working means 4. In this gasket cutter, the core needle 3 is pierced against the gasket sheet S, which is the work, and the instrument main body 2 is rotated around the axis O of the core needle 3, and the working means 4 moves the gasket sheet S against the gasket sheet S. The cutting work is performed to cut out an annular gasket whose inner and outer peripheral surfaces are concentric circles.

The instrument main body 2 includes a support rod 21 having a quadrangular prism shape, a working means mounting portion 22 provided at one end in the longitudinal direction of the support rod 21, and a support rod 21 capable of changing a position in the longitudinal direction of the support rod 21. And a floating member 23 provided in the. The working means mounting portion 22 is provided with a vertical through hole 22a, and the working means 4 is inserted into the hole 22a and fixed by a fixing screw 5. Further, the floating member 23 is fixed at an appropriate position of the support rod 21 by a screw 9 screwed into the floating member 23.

A handle 6 is pivotally connected to an upper portion of the floating body 23, and a rotating body 7 is pivotally connected to a lower portion thereof. In this pivotal structure, for example, as shown in FIG. 2, the floating body 23 is provided with vertically projecting projections 23a, 23a, and the projections 23a, 23a are respectively fitted into the handle 6 and the rotating body 7 by bearings. There is a structure in which 8 and 8 are fitted with shimari shark or the like. The centers of the pivots of the handle 6 and the rotating body 7 are on the same line, and the core needle 3 is embedded in the lower portion of the rotating body 7 with the same axis as the pivot.

According to the rotary operation device with the heart needle of the present embodiment, after the heart needle 3 is pushed to the gasket sheet S and the grip 6 is gripped, the center O of the heart needle is centered as shown in FIG. When the instrument main body 2 is rotated as described above, the heart needle 3 tries to stand still with respect to the gasket sheet S due to the frictional resistance with the gasket sheet S, so that the heart needle 3 is embedded together with the rotating body 7 in which the heart needle 3 is embedded. Rotate with respect to the instrument body 2 about the axis O of. Therefore, the work can be performed with the heart needle 3 stationary with respect to the gasket sheet S, and the small hole formed when the heart needle 3 is pushed up is not expanded. Therefore, since no center deviation occurs, it is possible to cut out an annular gasket having a high roundness.

Further, since the rotating body 7 is pivotally connected to the instrument body 2 and the core needle 3 is provided on the rotating body 7, the core needle 3 is pushed against the gasket sheet S and the handle 6 is pressed from above to rotate it. It is possible to work with the gasket sheet S being held down by the lower surface of the moving body 7, it is possible to prevent the gasket sheet S from shifting and to improve work efficiency. Furthermore, since the handle 6 is pivotally connected to the tool body with the pivoting body 7 and the pivot axis being the same, the tool body 2 can be rotated while the handle 6 is gripped, and the work efficiency can be improved.

The present invention is not limited to the above-described embodiment, and can be applied to a compass for drawing, scoring, etc., and the design of the configuration and structure can be appropriately changed.

[0015]

[Effect of device]

 As described above, the present invention is characterized in that the heart needle is provided on the instrument body so as to be rotatable about the axis of the heart needle, and therefore the heart needle is attached to the work piece. When the tool body is pushed up and the instrument body is rotated, the heart needle rotates about the axis of the heart needle with respect to the instrument body due to the frictional resistance with the workpiece, and Is stationary, no matter how many times the work is repeated with the heart needle sticking to the same point on the work piece, the small holes drilled in the work piece will not expand, improving the accuracy of the work. You can

[Brief description of drawings]

FIG. 1 is a bottom view showing an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is an explanatory view of the same operation.

FIG. 4 is a perspective view showing a conventional example.

[Explanation of symbols]

 2 Instrument body 3 Heart needle 4 Working method O Heart needle axis

Claims (1)

[Scope of utility model registration request] 1. The instrument main body includes the heart needle (3) and the working means (4).
(2) is provided separately, the heart needle (3) is pushed against the work, and the instrument body is centered around the axis (O) of the heart needle (3).
By rotating (2), the working means (4) makes a circular motion around the axis (O) of the core needle (3) to perform work on the work piece. In the operation instrument, the heart needle (3) is attached to the instrument body (2) with the heart needle (3).
A rotary operation instrument with a heart needle, which is provided so as to be rotatable around an axis (O) of (3).