JP2020082272A - Cartridge for hole drilling tool, and hole drilling tool - Google Patents

Abstract

To provide a cartridge which can cope with the case in which a tapered surface toward an opening side whose diameter is enlarged toward the inner peripheral side is formed with different inclination angles in a step part between a small diameter part and a large diameter part of a processing hole, with one cartridge.SOLUTION: In a cartridge for hole drilling tool mounted on a tool body of a hole drilling tool, a cutting blade 2A is provided on a tip outer peripheral part of a cartridge body 1 mounted on the tool body, a slit 3 is formed on the rear end side of the cutting blade 2A of the cartridge body 1, the cartridge body 1 is formed with two nut fitting recesses 4 across the slit 3 and a communication groove 5 communicating with a nut fitting recess 4 so as to astride the slit 3, a nut member 6 formed with a female screw part 6A whose at least one of a direction of a screw and a reed is different is inserted to the nut fitting recess 4, and the nut member 6 is connected by an adjustment member 7 which is rotatably inserted to the communication groove 5 and is formed with two male screw parts 7A screwed to the female screw part 6A.SELECTED DRAWING: Figure 1

Description

The present invention relates to a cartridge for a hole drilling tool that is detachably attached to a tool body of a hole drilling tool that drills a hole for mounting a bearing, for example, on a transmission of an automobile engine, and such a cartridge for a hole drilling tool is a tool. The present invention relates to a hole drilling tool detachably attached to a main body.

As a hole processing tool cartridge and a hole processing tool for processing a valve hole of a 4-cycle engine, for example, in Patent Document 1, a reamer for finishing the valve hole is attached to the tip of a tool body rotated around an axis. In addition, a plurality of cartridges (for example, three cartridges) provided with cutting blades for cutting valve seats (openings of valve holes) are circumferentially spaced around the tip outer periphery of the tool body. Is listed.

The cutting blades provided in the plurality of cartridges are inclined with respect to the axis toward the outer peripheral side toward the rear end side of the tool body, but the inclination angles with respect to the axis are different from each other. The tool body is arranged from the innermost side toward the outermost side at the rear end of the tool body in order from the smallest angle to the largest angle, and is arranged so that the rotation trajectories around the axis overlap. Therefore, by drilling with such a drilling tool, a multi-step (for example, three steps) taper surface is formed on the valve seat in which the inclination angle with respect to the axis increases from the inner peripheral side toward the outer peripheral side.

JP, 2005-213968, A

By the way, in the valve seat of the opening portion of such a valve hole, as described above, a multi-step tapered surface in which the inclination angle with respect to the axis gradually increases from the inner peripheral side to the outer peripheral side is formed. When machining a hole for mounting a bearing in a transmission of an automobile engine, as shown in FIG. 9, a small diameter portion h1 and a large diameter portion h2 to which the bearing is mounted are formed in the machining hole H and these small diameter portions are formed. It is required that the stepped portion between the portion h1 and the large-diameter portion h2 be formed with a tapered surface Q that is directed toward the opening side (the right side in FIG. 9) of the large-diameter portion h2 toward the inner peripheral side. is there.

The inclination angle θ of the tapered surface Q with respect to the plane P perpendicular to the center line L of the machined hole H is slightly different depending on the inner diameter of the machined hole H, the type of the bearing attached to the machined hole H, and the like. If such a tapered surface Q is to be formed by the hole drilling tool as described in Patent Document 1, the cutting edge provided in the cartridge moves toward the rear end side toward the inner peripheral side of the tool body. Therefore, it is inefficient and uneconomical to prepare a plurality of cartridges having a plurality of types of cutting blades that match the inclination angle θ of various tapered surfaces Q. ..

The present invention has been made under such a background, and in the step portion between the small-diameter portion and the large-diameter portion as described above, a taper that goes toward the opening side of the large-diameter portion toward the inner peripheral side. To provide a cartridge for a hole drilling tool that can be handled by one cartridge even when forming surfaces with different inclination angles, and to provide a hole drilling tool to which such a cartridge for a hole drilling tool is detachably attached. It is an object.

In order to solve the above problems and achieve such an object, a hole drilling tool cartridge of the present invention is a hole drilling tool detachably attached to an outer peripheral portion of a tool body of a hole drilling tool rotated about an axis. A cartridge for a tool, wherein a cutting blade is provided on a tip outer peripheral portion of a cartridge main body attached to the tool main body, and a rear end side of the cartridge main body from the front end to the rear end of the cartridge main body. A slit extending in a direction intersecting with the direction toward the slot is formed, and the cartridge body has two nut mounting recesses with the slits in between, and a communication groove or a communication that communicates with the nut mounting recesses across the slits. A hole is formed, and the two nut mounting recesses have a wall portion on at least one of the slit sides and on the opposite side of the slits. A nut member in which at least one of the direction and the lead is different from each other is formed so that the female screw portion communicates with the communication groove or the communication hole, and is inserted into the wall portion so as to be abuttable. These nut members are rotatably inserted into the communication groove or the communication hole and are connected by an adjusting member formed with two male screw portions that are respectively screwed into the female screw portions. Characterize.

Further, in the hole drilling tool of the present invention, such a hole drilling tool cartridge is detachably attached to the outer peripheral portion of the tool body by clamping the rear end portion of the cartridge body rather than the slit. It is characterized by

In the cartridge for a hole drilling tool and the hole drilling tool configured as described above, at least one of the direction of the screw and the lead of the female screw portion formed on the nut member is different from each other, and thus the adjusting member is formed. The two nut members can be brought into contact with or separated from each other by rotating the. For example, when the two nut mounting recesses have the wall portions on the slit sides, when the two nut members are brought close to each other, the two nut members come into contact with these wall portions to narrow the slit. The cartridge body is elastically deformed. Further, when the two nut mounting recesses have the above-mentioned wall portions on the sides opposite to the slits, when the two nut members are separated from each other, the two nut members come into contact with these wall portions and the slits are formed. The cartridge body is elastically deformed in the direction of expanding the.

Therefore, along with this, the inclination of the cutting edge provided at the tip of the attached cartridge body is adjusted by clamping the rear end of the tool body with respect to the slit. If it is made to go to the rear end side as it goes to the inner peripheral side of the main body, it goes to the step part between the small diameter part and the large diameter part as described above, and goes to the opening side of the large diameter part as it goes to the inner peripheral side Such a tapered surface can be formed.

Moreover, the inclination angle of the cutting edge can be adjusted by adjusting the screwing amount of the adjusting member, so the tapered surface can be formed with various inclination angles depending on the inner diameter of the processing hole, the type of bearing installed in the processing hole, etc. Even if it is done, it can be dealt with by one cartridge for a drilling tool. It should be noted that the present invention can also be applied to adjusting the inclination angle of the taper surface of the valve seat when finishing the tapered surface of the valve seat like the cartridge for the hole drilling tool and the hole drilling tool described in Patent Document 1. it can.

In addition, the slit is formed on a plane extending in a direction intersecting with the axis, and the two nut mounting recesses are holes having a circular cross section having center lines parallel to each other and parallel to the plane where the slit extends. With the above-mentioned nut member, the nut member is formed into an external cylindrical shape that can be fitted into the nut mounting recess, and the female screw portion is formed so as to extend perpendicularly to the center line of the nut member. Even if the nut member tilts due to elastic deformation of the cartridge body, the nut member remains in slidable contact with the wall of the nut mounting recess having a circular cross section, so that the state where the inclination of the cutting blade is adjusted is stable. It can be maintained, and stable cutting of the tapered surface can be performed.

Further, the communication groove or the communication hole is formed so as to open to the tip end surface of the cartridge body, and the tip end surface of the adjusting member is inserted into the opening of the communication groove or the communication hole. By providing an engaging portion that engages with the rotatable member to rotate the adjusting member, the inclination of the cutting blade can be adjusted by operating the working tool from the tip side of the cartridge body, and the adjusting work is facilitated. be able to.

As described above, according to the present invention, in the stepped portion between the small diameter portion and the large diameter portion of the machined hole, various tapered surfaces that face the opening side of the large diameter portion toward the inner peripheral side are formed. Even in the case of forming with corners, it is possible to cope with it with one cartridge for hole drilling tools, and it is not necessary to prepare a plurality of cartridges having a plurality of types of cutting edges according to the inclination angles of various tapered surfaces. As a result, efficient and economical hole drilling can be performed.

It is a partially broken plan view showing an embodiment of the hole machining tool cartridge of the present invention. It is a partially broken side view of the embodiment shown in FIG. It is a partially broken front view of the embodiment shown in FIG. It is a top view which shows the nut member of embodiment shown in FIG. It is a side view which shows the nut member of embodiment shown in FIG. It is a front view which shows the adjustment member of embodiment shown in FIG. It is a side view which shows the adjustment member of the embodiment shown in FIG. It is a top view which shows one Embodiment of the hole drilling tool of this invention which attached the cartridge for hole drilling tools of embodiment shown in FIG. A small-diameter portion h1 and a large-diameter portion h2 are formed, and a taper surface Q is formed in the step portion between the small-diameter portion h1 and the large-diameter portion h2 so as to face the opening side of the large-diameter portion h2 toward the inner peripheral side. It is sectional drawing of the processed hole H in which was formed.

1 to 7 show one embodiment of the hole drilling tool cartridge of the present invention, and FIG. 8 shows one embodiment of the hole drilling tool of the present invention to which the hole drilling tool cartridge of this embodiment is attached. It shows a form. In the present embodiment, the cartridge main body 1 is formed of a metal material such as steel into a substantially square columnar shape, and the tip portion (left side portion in FIGS. 1 and 2) 1A has a hole machining tool cartridge of this embodiment. As shown in FIG. 3, when the machining tool is attached to the tool body 11, the machining tool is formed to have a substantially trapezoidal cross section that widens toward the tool rotation direction T side, and the rear end portion (the right side portion in FIGS. 1 and 2). ) 1B has a rectangular cross section.

In the above-mentioned tip portion 1A of the cartridge body 1, the tip portion of the wall faced in the tool rotation direction T in the state of being attached to the tool body 11 has an outer peripheral side (lower side in FIGS. 1 and 3) of the tool body 11. An insert mounting seat 1C is formed at a position facing the wall so as to be recessed one step from the wall surface. A wall portion 1D is formed on the inner peripheral side (upper side in FIGS. 1 and 3) of the wall surface on which the insert mounting seat 1C is formed and extends perpendicularly to the wall surface in the tool rotation direction T side. There is.

A cutting insert 2 made of a hard material such as a cemented carbide having a hardness higher than that of the cartridge body 1 is screwed and detachably attached to the insert mounting seat 1C. The cutting insert 2 of the present embodiment is a positive insert having an equilateral triangular plate shape as shown in FIG. 1, and one equilateral triangular face is directed to the tool rotation direction T as a rake face, and one side edge of this rake face is used. As shown in FIG. 7, the cutting edge 2A formed on the portion is attached so as to be substantially located on a plane perpendicular to the axis O of the tool body 11.

Further, on the side surface of the cartridge main body 1 facing the inner peripheral side of the tool main body 11, a slit 3 extending in a direction intersecting the direction from the front end to the rear end of the cartridge main body 1 is provided on the rear end side of the cutting blade 2A. It is formed to face the outer peripheral side of the main body 11. In the present embodiment, the slits 3 extend in a direction intersecting with the axis O, and are formed along a plane orthogonal to the axis O as shown in FIG. The wall surfaces are parallel to each other and are formed in a U-shaped cross section as shown in FIG. 1 when viewed from the tool rotation direction T side.

Further, on the front end side and the rear end side of the cartridge body 1 with the slit 3 sandwiched therebetween, side surfaces facing the side opposite to the tool rotation direction T of the cartridge body 1 in the state of being attached to the tool body 11 in this embodiment. Further, two nut mounting recesses 4 are formed with the slit 3 in between and spaced apart from the slit 3. In the present embodiment, these nut mounting recesses 4 are in the shape of recesses having a circular cross section, and therefore have wall portions 4A and 4B on the slit 3 side and the side opposite to the slit 3, respectively.

In the present embodiment, the nut mounting recesses 4 having a circular cross section and having a recessed hole shape are formed to have a constant inner diameter with center lines parallel to each other and parallel to the above-mentioned plane on which the slit 3 extends. Therefore, the wall portion 4A on the slit 3 side and the wall portion 4B on the opposite side of the slit 3 have a semicircular cross section perpendicular to the center line.

Further, the cartridge main body 1 is formed with a communication groove 5 that extends over the slit 3 and communicates with these nut mounting recesses 4. The communication groove 5 is formed such that a portion thereof in the tool rotation direction T is formed in a semicircular cross section having a diameter smaller than that of the nut mounting recess 4, and its center line is orthogonal to the center lines of the two nut mounting recesses 4. In addition, the portion on the side opposite to the tool rotation direction T is formed in a U-shaped cross section that is opened perpendicularly to the side surface of the cartridge body 1 facing the side opposite to the tool rotation direction T.

Furthermore, in the present embodiment, as shown in FIGS. 1 and 3, communication is made from the wall portion 4B facing the side opposite to the slit 3 of the nut mounting recess 4 on the tip side of the cartridge body 1 to the tip surface of the cartridge body 1. An insertion hole 5A is formed along the center line of the semicircular cross section of the groove 5 and opens in the front end surface of the cartridge body 1.

A nut member 6 is inserted into each of the nut mounting recesses 4. In the present embodiment, these nut members 6 have a cylindrical outer shape as shown in FIGS. 4 and 5, and the outer diameter thereof is set to a size capable of being fitted into the nut mounting recess 4 having a circular cross section. Furthermore, in these nut members 6, female thread portions 6A in which at least one of the screw direction and the lead is different between the two nut members 6 are provided at right angles to the center line of the nut members 6. It is formed so as to penetrate the member 6.

Further, a cylindrical shaft-shaped adjusting member 7 as shown in FIGS. 6 and 7 is inserted into the communication groove 5. The central portion in the longitudinal direction of the adjusting member 7 remains cylindrical, and the female screw portions 6A of the two nut members 6 having at least one of the screw direction and the lead different from each other are provided on the outer circumferences of both ends. Male screw portions 7A that are screwed with each other are formed, and the two nut members 6 are connected by this adjusting member 7.

Furthermore, the tip end surface of the adjustment member 7 facing the tip end side of the cartridge body 1 is engaged with a working tool such as a hexagon wrench to rotate the adjustment member 7 (in the present embodiment, an engaging portion). A joint hole) 7B is formed. In the present embodiment, such an adjusting member 7 and the above two nut members 6 rotate the tool of the cartridge body 1 while the male screw portion 7A of the adjusting member 7 is screwed into the female screw portion 6A of the nut member 6. The above-mentioned work inserted into the insertion hole 5A when the engagement groove 7B of the adjusting member 7 is inserted from the opening of the communication groove 5 and the nut mounting recess 4 on the side surface facing the direction T and the adjustment member 7 is located in the insertion hole 5A. The nut member 6 is attached to the cartridge body 1 by bringing the nut member 6 into contact with one of the wall portions 4A and 4B of the nut mounting recess 4 by engaging the tool with the engaging portion 7B and rotating the adjusting member 7.

In the rear end portion 1B of the cartridge body 1, an attachment hole 1E having an oval cross section extending in the longitudinal direction of the cartridge body 1 (in the state of being attached to the tool body 11 in the axis O direction) penetrates the cartridge body 1. Further, on the rear end surface of the cartridge body 1, an adjusting screw 8 for adjusting the position of the cartridge body 1 in the axis O direction in the tool body 11 by adjusting the screwing amount is described. The cartridge body 1 is screwed so as to be parallel to O. Further, the cartridge body 1 is formed with a coolant hole 1F for ejecting the coolant supplied from the tool body 11 toward the cutting edge 2A.

In the hole drilling tool to which such a cartridge for a hole drilling tool is detachably attached, the tool main body 11 is formed of a steel material or the like in a multi-stage cylindrical shape around the axis O as shown in FIG. The rear end portion (right side portion in FIG. 8) of the tool body 11 is gripped by the spindle of the machine tool, and the tool body 11 is rotated around the axis O in the tool rotation direction T, while the tip side of the axis O direction. By being sent out (on the left side in FIG. 8), the cutting blade 2A in the cutting insert 2 of the hole drilling tool cartridge of the above-described embodiment attached to the tip portion of the tool body 11 causes the object as shown in FIG. The large diameter portion h2 of the machined hole H and the tapered surface Q are finished.

Here, on the outer periphery of the tip portion of the tool body 11, a wall surface 12A facing the tip side of the tool body 11, a wall surface 12B facing the outer periphery side of the tool body 11, and a bottom surface facing the tool rotation direction T (not shown) are provided. A cartridge mounting seat 12 is formed. The hole processing tool cartridge has a side surface of the rear end portion 1B of the cartridge body 1 facing the side opposite to the tool rotation direction T closely attached to the bottom surface, and a side surface of the tool body 11 facing the inner peripheral side of the wall surface 12B. The mounting bolts 13 that are closely attached to the mounting holes 1E and are inserted into the mounting holes 1E are screwed into the tool body 11 so as to be clamped and detachably mounted.

At the time of this mounting, after adjusting the screwing amount of the adjusting screw 8 screwed into the rear end surface of the cartridge main body 1, the rear end is brought into contact with the wall surface 12A of the cartridge mounting seat 12, thereby The position of the tool body 11 of the main body 1 in the axis O direction is adjusted, and the position of the cutting edge 2A in the axis O direction is also adjusted accordingly.

In the hole drilling tool to which the cartridge for a hole drilling tool is attached in this way, from the state where the cutting edge 2A extends on the plane perpendicular to the axis O as described above, the small diameter portion h1 as shown in FIG. A tapered surface at a stepped portion between the small diameter portion h1 and the large diameter portion h2 in the machined hole H in which the large diameter portion h2 to which the bearing is attached is formed so as to face the opening side of the large diameter portion h2 toward the inner peripheral side. To form Q, the adjustment member 7 is rotated to bring the two nut members 6 closer to each other, so that the width of the slit 3 is narrower on the inner peripheral side than on the outer peripheral side of the tool body 11. It suffices that the cartridge body 1 on the tip side of 3 is elastically deformed with respect to the rear end portion attached to the tool body 11.

When the female screw portions 6A of the two nut members 6 are in opposite directions with different screw directions, the adjusting member 7 is rotated to bring the two nut members 6 closer to each other with a size twice the lead of the screw. When the leads of the female screw portions 6A are the same even if the screw directions of the female screw portions 6A are the same, the two nut members 6 are brought close to each other by the difference of the leads of the female screw portions 6A of the two nut members 6. Can be made Of course, both the screw direction and the lead of the female screw portion 6A of the two nut members 6 may be different from each other.

Therefore, along with this, the cutting edge 2A of the cutting insert 2 extending on the plane perpendicular to the axis O of the tool main body 11 as described above moves toward the rear end side toward the inner peripheral side of the tool main body 11. As a result, a taper surface Q is formed at the step between the small diameter portion h1 and the large diameter portion h2 of the machined hole H toward the opening side of the large diameter portion h2 toward the inner peripheral side. it can. Then, the inclination angle θ of the tapered surface Q can be adjusted by adjusting the screwing amount of the adjusting member 7.

Therefore, even when the tapered surface Q is formed at various inclination angles θ depending on the inner diameter of the processing hole H, the type of bearings attached to the processing hole H, and the like, a plurality of types of cutting blades that match the inclination angle θ are provided. It is not necessary to prepare a plurality of types of cartridges, and it is possible to cope with the formation of the tapered surface Q having various inclination angles θ by one cartridge for a drilling tool. Therefore, according to the hole drilling tool cartridge and the hole drilling tool having the above-described configurations, efficient and economical hole drilling can be performed.

In addition to the case where the cutting blade 2A is inclined toward the rear end side toward the inner peripheral side of the tool body 11 as described above, for example, the hole machining tool cartridge and the hole machining described in Patent Document 1 It is also possible to apply the present invention to adjust the inclination angle when finishing the tapered surface of the valve seat like a tool. In this case, the adjusting member 7 is rotated so that the two nut members 6 are separated from each other, and the cartridge main body 1 is elastically deformed so that the slit 3 is wider on the inner peripheral side of the tool main body 11 than on the outer peripheral side. Just do it. Further, in any case, the cutting edge 2A may be provided in a state of being inclined in advance with respect to a plane perpendicular to the axis O.

Further, in the present embodiment, the two nut mounting recesses 4 are formed in the shape of recessed holes having a circular cross section having a center line parallel to each other and parallel to the plane in which the slit 3 extends, and the nut member 6 is The nut member 6 is formed in a cylindrical shape that can be fitted into the nut mounting recess 4 and the female screw portion 6A of the nut member 6 is formed to extend perpendicularly to the center line of the nut member 6.

As a result, even if the nut member 6 tilts in the nut mounting recess 4 due to the elastic deformation of the cartridge body 1, the nut member 6 maintains the state of sliding contact with the walls 4A and 4B of the nut mounting recess 4 having a circular cross section. Therefore, the cutting edge 2A can be maintained in a state in which the cutting edge 2A is adjusted with a predetermined inclination. Therefore, it becomes possible to stably perform the cutting work of the tapered surface Q having the predetermined inclination angle θ.

In the present embodiment, the nut mounting recess 4 is formed in the shape of a recessed hole having a circular cross section in this manner, and the nut member 6 is formed into a cylindrical shape that can be fitted into the nut mounting recess 4 to form a nut mounting recess. Although it is possible to contact both the wall portion 4A on the slit 3 side of 4 and the wall portion 4B on the opposite side of the slit 3, the tool body 11 of the slit 3 is adjusted by the adjusting member 7 as in the present embodiment. When the cartridge body 1 is elastically deformed so that the inner peripheral side is narrower than the outer peripheral side, the nut member 6 does not have to be capable of contacting the wall portion 4B on the side opposite to the slit 3. ..

On the contrary, when the cartridge body 1 is elastically deformed by the adjusting member 7 so that the inner circumference side of the tool body 11 of the slit 3 is wider than the outer circumference side, the nut member 6 is located on the slit 3 side. The wall portion 4A does not have to be capable of abutting, and for example, the nut mounting recessed portion 4 may be formed to have a U-shaped cross section and open to the slit 3. Further, the communication groove 5 may be a communication hole which does not open on the side surface of the cartridge body 1 facing the side opposite to the tool rotation direction T.

Furthermore, in the present embodiment, the communication groove 5 is provided with an insertion hole 5A that opens to the tip surface of the cartridge body 1, and the tip surface of the adjusting member 7 is the opening portion of the communication groove 5. An engagement portion 7B that engages with a work tool inserted through the insertion hole 5A and can rotate the adjustment member 7 is provided. Therefore, the inclination of the cutting blade 2A can be adjusted by operating the work tool from the tip side of the cartridge body 1, and the adjustment work can be easily performed.

1 Cartridge body 1C Insert mounting seat 2 Cutting insert 2A Cutting edge 3 Slit 4 Nut mounting recess 4A Nut mounting recess 4 slit 3 side wall 4B Nut mounting recess 4 slit 3 opposite wall 5 Communication groove 5A Insertion hole 6 Nut member 6A Female screw part 7 Adjusting member 7A Male screw part 7B Engaging part 11 Tool body 12 Cartridge mounting seat 13 Mounting bolt O Tool body 11 axis T Tool rotation direction H Machining hole h1 Small diameter part h2 Large diameter part Q taper surface θ Angle of inclination of taper surface Q with respect to plane P perpendicular to center line L of machined hole H

Claims (4)

A hole drilling tool cartridge detachably attached to an outer peripheral portion of a tool body of a hole drilling tool rotated about an axis,
A cutting edge is provided on the outer peripheral portion of the tip of the cartridge body attached to the tool body, and a direction intersecting the direction from the tip to the rear end of the cartridge body is provided on the rear end side of the cutting edge of the cartridge body. A slit that extends to
The cartridge body is formed with two nut mounting recesses with the slits therebetween, and a communication groove or a communication hole that communicates with these nut mounting recesses across the slits.
The two nut mounting recesses have wall portions on at least one of the slit sides and the opposite sides of the slits,
In these two nut mounting recesses, a nut member in which at least one of a screw direction and a lead is different from each other is formed. A nut member allows the female screw portion to communicate with the communication groove or the communication hole, and It is possible to abut on the wall and inserted respectively,
These nut members are rotatably inserted into the communication groove or the communication hole, and are connected by an adjusting member having two male screw portions that are respectively screwed into the female screw portions and are connected to each other. Cartridge for processing tools. The slit is formed on a plane extending in a direction intersecting the axis,
The two nut mounting recesses are formed in a hole shape having a circular cross section having a center line parallel to each other and parallel to the plane in which the slit extends.
The nut member is formed into an outer cylindrical shape that can be fitted into the nut mounting recess,
The cartridge for a hole drilling tool according to claim 1, wherein the female thread portion extends perpendicularly to a center line of the nut member. The communication groove or the communication hole is formed so as to open to the tip surface of the cartridge body, and the tip surface of the adjusting member has a working tool inserted into the opening of the communication groove or the communication hole. The cartridge for a hole drilling tool according to claim 1 or 2, further comprising: an engaging portion that engages with and rotates the adjusting member. The cartridge for a hole drilling tool according to any one of claims 1 to 3 is attachable to and detachable from an outer peripheral portion of the tool body by clamping a rear end portion of the cartridge body rather than the slit. Hole drilling tool characterized by being attached to.

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