JPH0249842B2 - MOJURAKOGU - Google Patents

Description

[Detailed Description of the Invention] [Objective of the Invention] (Industrial Application Field) The present invention provides a removable blade which is attached to the head of a machine tool and performs processing such as grinding, drilling, and cutting. Concerning improvements to modular tools.

(Prior Art) In a machine tool, a modular tool is attached to the head to perform processing such as grinding, drilling, and cutting. These modular tools employ a structure in which a blade module used for machining is detachably connected to a holder module that is detachably attached to the head of a machine tool or the like. In addition, it is possible to perform processing for various purposes from exchanging the blade module to using one holder module.

Generally, in such a holder module, a drawbar with a connecting part (T-shaped, etc.) at the tip is built into the main body so that it can move forward and backward, and the connecting part is removed from the tip of the main body by moving the drawbar forward and backward with an operating mechanism. A structure that allows it to come out and retract is used. With this, after the engaging part on the module side is engaged with the coupling part, if the engaging part is moved back in the retracting direction, the blade module can be attached to the holder module by tightening the engaging part. .

Incidentally, a screw type structure as shown in Japanese Utility Model Publication No. 58-56109 has conventionally been used as an operating mechanism for such a modular tool.

In Japanese Utility Model Publication No. 58-56109, a through hole is provided in the shaft portion of the drawbar, and a pair of pieces having tapered surfaces at the ends are slidably arranged in the through hole. Then, these pieces are screwed together using a screw shaft having a reverse thread at the end so that they can move forward and backward. Furthermore, a structure is used in which an inclined part is provided on the wall surface of the hole in which the drawbar is housed, which contacts the tapered part of the drawbar tip, and after the blade module is engaged with the joint part (tip) of the drawbar, the pieces By rotating the screw shaft in the direction away from the pressure on the inclined part of the tapered surface,
The blade module is fastened by moving the entire drawbar in the retractable direction.

However, with these screw-type operating mechanisms, each time the shaft is screwed in and the drawbar is retracted (when fastened),
and to move forward (when unfastened), fasten,
It has the disadvantage that the operation for releasing the fastening is troublesome.

(Problems to be Solved by the Invention) This invention has been made by focusing on these problems, and its purpose is to provide a modular tool that can fasten and unfasten with simple operations. It is about providing.

[Structure of the Invention] (Means and Effects for Solving Problems) This invention provides a through hole 7 that penetrates in the radial direction in the shaft portion of the drawbar 5, and inserts the through hole 7 into the main body portion 4. An operating shaft 8 is provided to be movable forward and backward, and one end is rotatably connected to a portion of the operating shaft 8 corresponding to the forward and backward direction of the drawbar 5, and the other end is rotatable toward the inner surface of the through hole 7 adjacent thereto. The operating mechanism 6 is configured by providing a connecting rod 10 that can be connected freely, and providing biasing means for applying elastic forces in opposite directions to both ends of the operating shaft 8, thereby pushing the operating shaft 8. The engagement is released by the above operation (the drawbar moves forward), and the engagement is carried out by stopping that operation (the drawbar retreats).

(Example) The present invention will be described below based on an example shown in FIGS. 1 and 2. Figure 2 shows the entire modular tool, with 1 being the holder module and 2 being the holder module.
is a blade module which is detachable from the holder module 1.

The holder module 1 has a drawbar 8 which extends from the pilot fitting part 3 to the rear side at the center of the main body part 4 which has a pilot fitting part 3 at the front, and is provided with a drawbar 8 that can move forward and backward. It is configured with an operating mechanism 6 for operation. For more information,
The structure is shown in FIGS. 1a and 1b.

Here, the drawbar 5 and the operating mechanism 6 will be described in detail. First, the drawbar 5 has a petal-shaped joint 5a formed at the tip of the shaft member, and a diametrically extending hole extending through the center of the shaft member in the longitudinal direction. It is configured by providing an elliptical through hole 7. And this drawbar 5
is movably arranged in a bottomed hole formed in the main body 4, and the coupling portion 5a projects into the spigot fitting portion 3 from the opening of the hole.

Regarding the operating mechanism 6, 8 is an operating screw (corresponding to an operating shaft) provided with flanges 8a and 8b at the head and tip, and 9 is fixed by screwing into the center of the operating screw 8. The piece 10 is a push rod (corresponding to a connecting rod). The operating screw 8 is inserted into the through hole 7 along the lumen direction, and the piece 9 is arranged in the through hole 7 by this insertion. The flanges 8a and 8b at both ends are movably arranged in spring chambers 11a and 11b formed on both sides of the main body 4, respectively, and the operating screw 8 is slidably accommodated in the main body 4. Also, the flange 8a on the head side is the operating screw 8.
It is exposed to the outside together with the head and forms the operating section. On the other hand, there is a gap between the plate surface of the flange 8a and the inner bottom surface of the spring chamber 11a facing thereto, and further between the plate surface of the flange 8b and the lid member 12 of the spring chamber 11b facing thereto.
(which constitutes the wall surface of the spring chamber 11b), an annular disc spring 13 is interposed between the spring chamber 11b and the spring chamber 11b. With this, the entire operating screw 8 including the piece 9 can be
It is biased in the direction. In other words, elastic forces are applied from both ends of the operating screw 8 in opposite directions. Using this piece 9 as a connecting tool, the shaft portion of the actuating shaft 8 and the through-hole portion on the rear side of the drawbar 5 in the advance/retreat direction are rotatably connected by the push rod 10.

Specifically, the push rod 10 has a substantially rugby ball shape with hemispherical portions formed at both ends. In addition, in the connection structure, a hemispherical recess 14a is formed at the center of the outer surface of the piece 9, and a hemispherical recess 14b is formed at the tip of the rear axis of the drawbar 5 bordering on the through hole 7. A structure is used in which the restraining member 14c is screwed in and a compression spring 15 is interposed at the rear end of the drawbar 5 for biasing the drawbar 5 toward the distal end. Note that the compression spring 15 used has an elastic force smaller than that of the disc spring 13. Then, using the holding member 14c, the hemispherical part on one end of the push rod 10 is placed in the recess 14a, and the hemispherical part on the other end is placed in the recess 14.
b, and are slidably (rotatably) connected to each other.

The elastic force of the disk springs 13, 13 applied through the push rod 10 urges the drawbar 5 rearward and retracts it to the fastening position. Specifically, for example, the end of the recess 14b (corresponding to a stopper) restricts the push rod 10 from being displaced beyond a state parallel to the drawbar 5, so that the drawbar 5 is retracted the most. (The state in which the coupling portion 5a is within the inner fitting portion 3). That is, in that example,
The disc springs 13, 13 and a means for guiding the drawbar 5 to a fixed position constitute a biasing means. Then, due to the state of engagement formed by such urging, the forward movement of the drawbar 5 necessary for releasing the engagement (the coupling portion 5a
2) can be obtained by pressing the operating screw 8.

The rear portion of the main body 4 of the holder module 1 constructed in this manner has a conical shape that can be attached to and detached from, for example, a head (not shown) of a machine tool.

On the other hand, the blade module 2 is configured by providing an engaging portion 19 on the rear side of a holding member 18 that supports the processing blade 17. The engaging portion 19 includes a conical wall 19a that can be freely fitted to the spigot fitting portion 3, and a conical wall 19a that can be freely fitted to the spigot fitting portion 3.
It is formed of a coupling hole 19b that can be freely engaged and detached from the coupling part 5a on the head of the body.

A positioning bolt 20 is provided protruding from the front end surface of the main body portion 4, and a guide groove 21 along the circumferential direction is provided at the rear end surface of the holding member 18 corresponding to the position of the bolt 20. The locking position necessary for coupling can be determined from the slide with the fitting of the two.

Therefore, when assembling the modular tool, first push the head of the operating screw 8, which serves as the operating section. This causes the push rod 10 to move below the piece 9 (in the figure).
As the drawbar 5 moves, it tilts with the drawbar 5 side as a fulcrum (as shown by the two-dot chain line), and the drawbar 5 is pushed forward by the elastic force of the compression spring 15. That is, the coupling part 5 protrudes forward from the spigot fitting part 3, and a state necessary for attachment is created.

Thereafter, in this state, the joint hole 19b of the blade module 2 is inserted into the joint part 5a, and when the bolt 20 and the guide groove 21 come into contact, the bolt 20 is inserted into the holding member 18 of the blade module 2. Rotate until it comes into contact with the end of the guide groove 21. This locks the coupling portion 5a and the engagement hole 19b.

After completing this locking, the operating screw 8
Disc springs 13, 13 return to their original state when you release your fingers from the
Then, the drawbar 5 returns to its original position (for example, push rod 1
0 becomes parallel to the drawbar 5). As a result, the coupling portion 5a is retracted into the spigot fitting portion 3, and both the holder module 1 and the blade module 2 are connected by pressure contact between the spigot fitting portion 3 and the conical wall 19a.

In this way, the fastening can be performed by a simple operation such as pushing the operating screw 8 and moving it forward and backward.
Moreover, when releasing the fastening, it is sufficient to push the operating screw 8 to move the drawbar 5 forward, and the releasing of the fastening can be performed as easily as the fastening.

In one embodiment, the present invention is applied to a holder module that can be attached to the head of a machine tool, but the invention is not limited thereto, and may also be applied to a holder module that is integrally provided with the head.

[Effects of the Invention] As explained above, according to the present invention, fastening and unfastening can be performed by a simple operation such as moving the operating shaft forward and backward.

[Brief explanation of drawings]

The drawings show an embodiment of the invention, and FIGS.
b is a side view and a sectional view showing the holder module, and FIG. 2 is an exploded front view showing the modular tool. DESCRIPTION OF SYMBOLS 1... Holder module, 2... Blade module, 4... Main body, 5... Drawbar, 6... Operating mechanism, 7... Through hole, 8... Operating screw (operating shaft), 9... ... Piece, 10 ... Push rod (connecting rod), 13
...Disc spring (biasing means).

Claims (1)

[Claims] 1. A modular tool comprising a holder module in which a drawbar is provided in the main body so as to be freely advanced and retracted, and an operating mechanism for moving the drawbar forward and backward is provided, and the operating mechanism is provided in the shaft portion of the drawbar and extends in the radial direction. a through hole penetrating through the drawbar, an operating shaft inserted through the through hole and provided in the main body so as to be movable forward and backward, and one end rotatably connected to a portion of the operating shaft corresponding to the forward and backward direction of the drawbar. , a connecting rod whose other end is rotatably connected to the inner surface of the through hole adjacent to the connecting rod, and elastic forces provided at both ends of the operating shaft and facing each other from both ends of the operating shaft. A modular tool comprising: a biasing means for applying