JP5922340B2 - Angle head tool - Google Patents

Description

  The present invention relates to an angle head tool, and more particularly to a tool for rotating a cutter around an axis in a direction intersecting with an axis of a main shaft.

Conventionally, machine tools such as machining centers have been frequently used in the cutting field.
In a machine tool, a spindle on which a cutting tool is mounted is rotated at a high speed, and the blade position of the tool is accurately controlled by a three-axis drive system of X, Y, and Z to realize high-precision machining on a workpiece.
Usually, a spindle in a machine tool is supported by the spindle head and is directed in a certain direction. Therefore, the direction of the tool in the machine tool is also constant. However, in recent various machining requirements, it is sometimes required that the direction of the tool is a crossing direction, for example, a right angle with respect to the rotation axis of the main shaft.
An angle head tool (angle head attachment) is used as a response to such a demand (see Patent Document 1).

The angle head tool has a tapered shank that can be connected to the main shaft at one end of a cylindrical or box-shaped casing. At the other end of the casing, a cutter capable of rotating around the axis of rotation of the taper shank is installed, and a transmission mechanism for transmitting the rotation of the taper shank to the cutter is installed inside the casing. Further, the casing is provided with an engagement mechanism that engages with the spindle head when the taper shank is mounted on the spindle for stopping rotation.
In such an angle head tool, the taper shank, the transmission mechanism and the blade are rotated by rotating the main shaft in this state by attaching the taper shank to the main shaft and integrating the casing and the main shaft head by the engagement mechanism. And this cutting tool can perform cutting (angle head processing) in the rotational direction intersecting the main axis.

By the way, the direction of the blade in the angle head tool (the direction of the rotation axis of the blade about the main shaft axis) is defined by an engagement mechanism for preventing rotation between the casing and the main shaft head. For example, if the main shaft and the cutter form a right angle, the axis of the cutter can be set in any direction within the plane orthogonal to the main shaft depending on the angular position around the main shaft axis of the casing.
However, in the conventional angle head tool, the engagement between the casing and the spindle head is basically limited to a predetermined angular position by the above-described detent engagement mechanism. Although the angle adjustment by manual operation may be performed with respect to a basic angle position, this was a fine adjustment of 20 degrees or less.
On the other hand, an apparatus that can select and automatically engage a plurality of angular positions has been proposed (see Patent Document 2).

  The indexing / positioning device of Patent Document 2 has a locking mechanism for locking the casing and the spindle head at a plurality of positions on the outer periphery of the taper shank, and the casing and the taper shank when the engagement mechanism is released. The main shaft is rotated at a slow speed with the engagement mechanism released, and is rotated around the main shaft axis of the casing, and is engaged by any of the engagement mechanisms on the outer periphery of the taper shank. Thus, a plurality of angular positions can be selected.

JP 2004-130423 A Japanese Patent Publication No. 3-4339

In the configuration of Patent Document 2 described above, the attitude adjustment of the angle head is realized by utilizing the rotation of the main shaft. As the configuration, a plurality of anti-rotation engagement mechanisms are installed on the outer periphery of the main shaft head for each angle. As a result, a large number of machine elements project greatly around the spindle head, and interference with the surroundings becomes a problem.
Further, when selecting the engagement mechanism, it is necessary to release the engagement with the taper shank mounted on the main shaft, and the engagement mechanism requires an advance / retreat mechanism by hydraulic pressure or air pressure. In order to operate them, it is necessary to connect air or hydraulic pipes. Especially, if these pipes are provided outside the spindle head, interference with the surroundings becomes more problematic.

  An object of the present invention is to provide an angle head tool that can reduce outward protrusion and eliminate external piping.

  In Patent Document 2 described above, the angle of attachment of the angle head to the spindle head is adjusted using the rotation of the spindle. In the present invention, the angle of attachment of the angle head to the spindle head is kept constant. On the other hand, a rotating portion is provided, and the posture can be adjusted by rotating the portion around the main shaft. This simplifies the engagement mechanism for preventing rotation with respect to the main shaft, and eliminates the outward protrusion. For this purpose, the present invention has the following configuration.

The angle head tool of the present invention is connected to a main shaft rotatably supported by the main shaft head and can be rotated integrally with the main shaft, and can be rotated around the axis of the connecting portion supported by the connecting portion. And a movable part supported by the fixed part and rotatable about the axis of the fixed part, and supported by the movable part and rotatable about an axis intersecting the main axis and at the tip. A cutter shaft on which a cutter is mounted, a rotary shaft connected to the connecting portion and inserted through the fixed portion and the movable portion, a transmission mechanism for transmitting rotation of the rotary shaft to the cutter shaft, and the fixed portion A set of locking mechanisms for engaging the spindle head, a fixing clutch for fixing the movable part to the spindle head by engaging the movable part with the fixed part, said movable section rotating shaft Engaged with and having a an adjustment clutch for rotating the movable portion integral with said main shaft.

  In the present invention as described above, an outer shell as an angle head tool is formed by the connecting portion, the fixed portion, and the movable portion, the rotation is stopped by the engagement mechanism, and the rotation of the main shaft is transmitted to the blade shaft by the transmission mechanism. The The machining state and the angular position changing operation can be switched by operating the fixing clutch and the adjusting clutch.

  When performing the angle head machining, the fixing clutch is enabled (engaged state, transmission state), and the adjustment clutch is disabled (engaged release state, non-transmission state). The fixed portion is locked to the spindle head by the engagement mechanism, and the movable portion is also engaged to the fixed portion by the fixing clutch and is locked to the spindle head. The rotation of the main shaft is transmitted to the blade shaft by the connecting portion and the transmission mechanism, and thus machining can be performed.

When changing the direction of the blade, disable the fixing clutch and enable the adjustment clutch. The movable portion is released from the rotation stop with respect to the spindle head and is brought into a state of interlocking with the rotating shaft and the connecting portion by the adjusting clutch. The rotation of the main shaft is transmitted to the cutter shaft via the connection portion and the transmission mechanism, and is also transmitted to the movable portion via the rotation shaft to rotate it relative to the fixed portion. When the angular position of the movable part with respect to the fixed part reaches a desired state, the rotation is stopped, the adjustment clutch is disabled, and the fixed clutch is enabled. The processing can be performed again at the angular position.

In the present invention, the spindle head may be provided with a set of anti-rotation engagement mechanisms, and the structure projecting outside the spindle head can be minimized.
Further, the fixing clutch and the adjusting clutch can be formed inside the fixed part or the movable part, and the equipment installed outside the spindle head can be eliminated.
In the present invention, as the fixing clutch and the adjusting clutch, a fluid clutch operated by pressure fluid can be used, but a wired or wirelessly controlled electromagnetic clutch or the like may be used.

In the present invention, it is desirable that the fixing clutch and the adjusting clutch are driven by the same drive source, and are linked so that when one is valid, the other is invalid.
In the present invention, the fixing clutch and the adjusting clutch can be exclusively controlled reliably, and the mechanism can be simplified because only one drive source is required.

In the present invention, it is desirable that the fixing clutch and the adjusting clutch are driven by a fluid supplied to the connecting portion through the main shaft.
In the present invention as described above, it is possible to eliminate the drive piping installed outside the spindle head.

In the present invention, before Symbol fixed portion includes a fixed-side end surface which faces the orthogonal and the movable portion to the rotating shaft, and a central hole through which the rotary shaft is inserted, around the central hole of the fixed-side end surface A movable side end surface having a formed circular cavity and a plurality of positioning slits formed around the cavity of the fixed side end surface, wherein the movable portion is orthogonal to the rotation axis and faces the fixed portion. And a retraction slit formed in the movable side end surface and extending in the radial direction, the fixing clutch being movable in the axial direction along the rotation axis, and the fixing moving body A fixing pin that extends in a radial direction from the front end and is movable with the movement of the fixing moving body from the positioning slit into the retraction slit, and the adjustment clutch is arranged along the rotating shaft. In the axial direction A movable adjustment movable body, and an engagement pin that protrudes in a radial direction from the adjustment movable body and is movable from the inside of the circular cavity to the retraction slit as the adjustment movable body moves. desirable.

  In the present invention, when the engagement pin is in the circular cavity, the rotation transmission between the connection portion and the movable portion is released, and the adjustment clutch is released (invalid). When the engaging pin is moved to the retracting slit, the rotation of the connecting portion is transmitted to the movable portion, and the adjustment clutch is in the connected state (valid). On the other hand, when the fixed pin reaches the positioning slit, the fixed moving body on which the fixed pin is formed is restricted from rotating with respect to the movable part within the retraction slit, so that the fixed part and the movable part are prevented from rotating. Thus, the fixing clutch is in the connected state (valid). When the fixed pin exits the positioning slit and moves into the retraction slit, the detent between the fixed portion and the movable portion is released, and the fixing clutch is released (invalid).

In the present invention, the fixing moving body may be driven in the axial direction by being engaged in the axial direction by the adjusting moving body, whereby the movement of the engaging pin and the movement of the fixing pin described above can be performed. By linking, it is possible to make the linkage so that the fixing clutch is valid when the adjustment clutch is invalid, and the fixation clutch is invalid when the adjustment clutch is valid.
Therefore, with such a configuration, the above-described operation of the present invention can be executed with a simple operation, and even if the fluid supplied from the above-described main shaft is only one system, the two clutches are reliably operated. be able to.
Further, the two clutches are not exposed to the outside at all, and can be configured by utilizing the end surface between the movable portion and the fixed portion, so that a compact device can be obtained.

In the present invention, the positioning slits are preferably arranged at intervals of 15 degrees in the circumferential direction.
In the present invention, the angular position of the spindle head, the fixed portion, and the movable portion can be selected at intervals of 15 degrees by engaging the fixed pins with any of the positioning slits arranged at intervals of 15 degrees. it can. Thereby, main angle positions, such as 30 degrees, 45 degrees, 60 degrees, 90 degrees, 120 degrees, and 180 degrees, which are multiples of 15 degrees, can be appropriately set.

The perspective view which shows the front side of 1st Embodiment of this invention. The perspective view which shows the back side of the said 1st Embodiment. The schematic diagram which shows the principal part in the processing state of the said 1st Embodiment. The schematic diagram which shows the principal part in the adjustment operation of the said 1st Embodiment. The schematic diagram which shows the principal part in the processing state of 2nd Embodiment of this invention. The schematic diagram which shows the principal part in the adjustment operation of the said 2nd Embodiment. The schematic diagram which shows the principal part in the processing state of 3rd Embodiment of this invention. The schematic diagram which shows the principal part in adjustment operation of the said 3rd Embodiment. The schematic diagram which shows the principal part in the processing state of 4th Embodiment of this invention. The schematic diagram which shows the principal part in adjustment operation of the said 4th Embodiment. The perspective view which shows 5th Embodiment of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[First Embodiment]
1 and 2, an angle head tool 1 of the present invention is used by being mounted on a spindle of a machine tool (not shown) and a spindle head that supports the same, and includes a connecting portion 10, a fixed portion 20, and a movable portion 30. The blade portion 40 and the engagement mechanism 50 are provided.
Further, as shown in FIGS. 3 and 4, a transmission mechanism 60, a fixing clutch 70, and an adjusting clutch 80 are formed inside the angle head tool 1 of the present invention.

The connecting portion 10 is attached to a main shaft (not shown) and can rotate integrally with the main shaft, and has a tapered tool shank (taper shank 11).
As shown in FIGS. 1 and 2, a pull stud 12 is formed at the tip of the taper shank 11, and a gripping portion 13 for gripping with an automatic tool changer (ATC) is formed on the large diameter side. The grip 13 is formed with a V-groove 14 for engaging an ATC holder and a key groove 15 for locking when engaged with the main shaft when mounted on the main shaft.
As these taper shanks 11 and key grooves 15, existing standard tools are employed as tools corresponding to ATC, and the angle head tool 1 of the present embodiment can be used as appropriate in a general machine tool.

  The fixing portion 20 is supported by the connecting portion 10 and is rotatable about the axis of the connecting portion 10. Specifically, the fixing portion 20 has a cylindrical upper casing 21 mounted on the lower surface side of the grip portion 13. A fixing member 29 (see FIGS. 3 and 4) is accommodated in the upper casing 21, and this fixing member 29 is rotatably supported by the grip portion 13 (details will be described later).

The movable portion 30 is supported by the fixed portion 20 and can be rotated around the axis of the fixed portion 20. The movable portion 30 has a cylindrical intermediate casing 31 extending downward from the upper casing 21 described above and the lower surface of the intermediate casing 31 described above. A prismatic lower casing 32 connected to a position eccentric with respect to the axis of the fixed portion 20 (same as the axis of the connecting portion 10 and the axis of the main shaft).
As shown in FIGS. 1 and 2, the upper casing 21 has a stepped lower edge, and the intermediate casing 31 appears in a cylindrical shape inside the lower edge. A movable member 39 (see FIGS. 3 and 4) is accommodated in the intermediate casing 31, and this movable member 39 is rotatably supported by the above-described fixed member 29 (details will be described later).

The blade part 40 has two blades, a main blade 41 and an auxiliary blade 42. The main cutter 41 is mounted on a main cutter chuck 43 installed on the front side of the lower casing 32, and the auxiliary cutter 42 is mounted on an auxiliary cutter chuck 44 installed on the back side of the lower casing 32, and each chuck is loosened. It is exchangeable at.
The main cutter chuck 43 and the auxiliary cutter chuck 44 are connected to both ends of a cutter shaft 49 (see FIGS. 3 and 4) installed in the lower casing 32, and the connection portion 10 is rotated (the main shaft is rotated) by a transmission mechanism 60 described later. Rotation) is transmitted (details will be described later).

  The engagement mechanism 50 has an expansion casing 51 fixed to the back surface side of the intermediate casing 31 described above, and a tapered engagement chuck 52 is provided on the upper surface thereof. When the connecting portion 10 is mounted on the main shaft, the engaging chuck 52 engages with a receiving portion (not shown) formed on or around the end surface of the main shaft head that supports the main shaft, thereby fixing the fixed portion 20. Is fixed to the spindle head, and the rotation is prevented regardless of the rotation of the spindle and the connecting portion 10.

  As shown in FIGS. 3 and 4, the angle head tool 1 of the present invention has a transmission mechanism 60 for rotationally driving the above-described blade part 40, and the above-described connection part 10, fixed part 20, movable part 30. Are provided with a fixing clutch 70 and an adjusting clutch 80.

The transmission mechanism 60 includes a bevel gear 61 mounted on the blade shaft 49 described above and a bevel gear 62 meshing with the bevel gear 61, and the bevel gear 62 is mounted on the end of the rotating shaft 63.
The rotating shaft 63 extends along the axial direction of the main shaft described above, passes through the central holes 37 and 27 formed at the centers of the movable member 39 and the fixed member 29, and is not shown in the figure in the tapered shank 11 of the connecting portion 10. It is connected.
The inside of the rotating shaft 63 is hollow, and a fluid passage 64 passing through the rotating shaft 63 is formed by this space. The end of the fluid passage 64 on the side of the connecting portion 10 is communicated with a fluid supply passage (not shown) at the center of the main shaft through a cavity at the center of the taper shank 11 and the pull stud 12, and is supplied from the machine tool by a control command of the machine tool. Compressed air to be sent is sent.

The fixing clutch 70 switches the movable portion 30 to the spindle head via the fixed portion 20 and the engagement mechanism 50 by switching whether the movable portion 30 is engaged with the fixed portion 20 or released. Is switched between a fixed state and a released state.
The adjustment clutch 80 switches the engagement of the movable part 30 with the connection part 10 or cancels the engagement, thereby linking the state in which the movable part 30 is rotated integrally with the main shaft and the main shaft. This switches between the released state and the released state.
The fixing clutch 70 and the adjusting clutch 80 are specifically configured using the following mechanism.

The fixed portion 20 has a fixed-side end face 28 on the movable member 30 side of the fixed member 29.
The fixed-side end surface 28 is a plane in a direction perpendicular to the rotation shaft 63, a central hole 27 through which the rotation shaft 63 is inserted is opened at the center, and a cylindrical circumferential cavity 26 is formed around the central hole 27. A plurality of positioning slits 25 are formed around the circumferential cavity 26.
The positioning slits 25 are each carved from the surface of the fixed-side end face 28 and formed radially extending around the central hole 27, and are arranged at intervals of 15 degrees along the outside of the circumferential cavity 26.

The movable part 30 has a movable side end face 38 on the fixed part 20 side of the movable member 39.
The movable side end surface 38 is a plane in a direction orthogonal to the rotation shaft 63, a central hole 37 through which the rotation shaft 63 is inserted is opened at the center, and a cylindrical retraction cavity 36 is formed around the center hole 37. A plurality of retracting slits 35 are formed around the retracting cavity 36.
The retracting slits 35 are slits that are engraved along the surface of the movable side end surface 38 from the inner peripheral surface of the retracting cavity 36 and extend radially around the central hole 37, and extend along the outside of the retracting cavity 36. Are arranged at intervals of 90 degrees.

The rotating shaft 63 accommodates an adjustment moving body 81 that can move in the fluid passage 64 in the axial direction. The adjustment moving body 81 is gas-sealed around the inner surface of the rotating shaft 63 and descends with the pressure of the compressed air supplied to the fluid passage 64. A coil spring 82 is interposed between the lower end of the adjustment moving body 81 and the lower end of the fluid passage 64. When the supply of compressed air is released, the adjustment moving body 81 rises due to the biasing force of the coil spring 82. ing.
An engagement pin 83 protruding in the radial direction is fixed to the adjustment moving body 81. The engaging pin 83 is formed of a single bar, and protrudes from the adjustment moving body 81 in the radial direction at an angle of 180 degrees. The rotation shaft 63 is formed with an insertion slit 84 through which the engagement pin 83 is inserted.

When the adjustment moving body 81 is above the rotating shaft 63 (state shown in FIG. 3), the engagement pin 83 is inserted into the rotating cavity 26 of the fixing member 29 through the insertion slit 84. In this state, the engaging pin 83 does not interfere with the fixing member 29, and the rotating shaft 63 can freely rotate with respect to the fixing member 29.
When the adjustment moving body 81 moves downward (the state shown in FIG. 4), the engaging pin 83 exits the circular cavity 26 and enters the retraction slit 35 of the movable member 39. In this state, the engaging pin 83 is engaged with the inside of the retracting cavity 36, and the rotation of the rotating shaft 63 is transmitted from the insertion slit 84 to the movable member 39 through the engaging pin 83 and the retracting slit 35.

Therefore, the state in which the rotation of the rotating shaft 63 (the rotation of the connecting portion 10) is transmitted to the movable portion 30 by raising and lowering the adjustment moving body 81 depending on the presence or absence of the compressed fluid supplied to the fluid passage 64 (see FIG. 4). State) and the state in which the transmission is canceled (the state in FIG. 3) can be switched.
The adjustment moving body 81, the coil spring 82, the engagement pin 83, the insertion slit 84, the circulating cavity 26, and the retracting slit 35 constitute an adjustment clutch 80.

A fixed moving body 71 is mounted around the rotation shaft 63.
The fixing moving body 71 is formed in an annular shape around the outer periphery of the rotating shaft 63 and includes four fixing pins 72 extending in the radial direction at intervals of 90 degrees.
The fixed pins 72 extend in the radial direction in the retracting cavities 36 of the movable member 39 that are also arranged at intervals of 90 degrees, and can be inserted into the positioning slits 25 of the fixed member 29 with the vicinity of the tip rising upward.
On the lower surface side of the fixing moving body 71, a coil spring 73 is provided between the lower surface of the fixing pin 72 and the bottom surface of the retracting cavity 36, and is normally biased upward. On the upper surface side of the fixing moving body 71, a thrust bearing 74 is interposed between the lower portion of the engaging pin 83, and the fixing moving body 71 is restricted from moving upward by the engaging pin 83.

When the adjustment moving body 81 is above the rotating shaft 63 (the state shown in FIG. 3), the fixing moving body 71 is at the upper limit of movement, and the fixing pin 72 is inserted into the positioning slit 25 and can be moved by mutual engagement. The member 39 is locked to the fixed member 29 and fixed to the spindle head. In this state, the rotating shaft 63 is rotatable, but there is no hindrance to the rotation of the rotating shaft 63 even if the movable member 39 is fixed because there is a thrust bearing 74 between the fixing moving body 71.
When the adjustment moving body 81 moves downward (the state shown in FIG. 4), the fixing moving body 71 is also lowered as the engagement pin 83 is lowered, and the annular portion is accommodated in the retracting cavity 36. The fixing pin 72 exits from the positioning slit 25 and retracts into the retracting slit 35. In this state, the locking of the movable member 39 and the fixed member 29 is released. At this time, the movable member 39 is rotated by the engagement pin 83.

Accordingly, by moving the adjustment moving body 81 up and down depending on the presence or absence of the compressed fluid supplied to the fluid passage 64, the fixing moving body 71 is also moved up and down in cooperation, and the movable member 39 is locked to the fixed member 29. It is possible to switch between a fixed state (the state shown in FIG. 3) and a fixed state (the state shown in FIG. 4) with respect to the spindle head.
The fixing moving body 71, the fixing pin 72, the coil spring 73, the thrust bearing 74, the retracting slit 35, the retracting cavity 36, and the positioning slit 25 constitute the fixing clutch 70.

  In such an embodiment, the outer shell as the angle head tool 1 is formed by the connection portion 10, the upper casing 21 of the fixed portion 20, the intermediate casing 31 of the movable portion 30, and the lower casing 32, and the engagement mechanism 50 The rotation is stopped, and the rotation of the main shaft is transmitted to the cutter unit 40 by the transmission mechanism 60. Then, the machining state (see FIG. 3) and the angular position changing operation (see FIG. 3) can be switched by operating the fixing clutch 70 and the adjusting clutch 80.

  When performing the angle head processing, the fixing clutch 70 is enabled (engaged state, transmission state), and the adjustment clutch 80 is disabled (engaged release state, non-transmission state). The fixed portion 20 is locked to the spindle head by the engagement mechanism 50, and the movable portion 30 is also engaged with the fixed portion 20 by the fixing clutch 70 and is locked to the spindle head. The rotation of the main shaft is transmitted to the blade portion 40 by the connecting portion 10 and the transmission mechanism 60, and thus machining can be performed.

  When changing the direction of the blade, the fixing clutch 70 is disabled and the adjustment clutch 80 is enabled. The movable part 30 is released from the rotation prevention with respect to the spindle head and is brought into a state of being interlocked with the connection part 10 via the rotary shaft 63 by the adjusting clutch 80. The rotation of the main shaft is transmitted to the blade unit 40 via the connection unit 10 and the transmission mechanism 60 and is also transmitted to the movable unit 30 to rotate it with respect to the fixed unit 20. When the angular position of the movable portion 30 with respect to the fixed portion 20 reaches a desired state, the rotation is stopped, the adjustment clutch 80 is disabled, and the fixed clutch 70 is enabled, so that the movable portion 30 is fixed at the angular position. It can be engaged with the part 20 and processed again at that angular position.

In particular, in the adjustment clutch 80 of the present embodiment, when the engagement pin 83 is in the circulating cavity 26, the rotation transmission between the connecting portion 10 and the movable portion 30 is released, and the adjustment clutch 80 is in the released state (invalid). It becomes. When the engaging pin 83 is moved into the retracting slit 35, the rotation of the connecting portion 10 is transmitted to the movable portion 30, and the adjustment clutch 80 is in a connected state (valid).
On the other hand, in the fixing clutch 70 of the present embodiment, when the fixing pin 72 reaches the positioning slit 25, the fixing moving body 71 on which the fixing pin 72 is formed is within the retraction slit 35 with respect to the movable portion 30. Since the rotation is restricted, the fixed portion 20 and the movable portion 30 are prevented from rotating, and the fixing clutch 70 is connected (valid). When the fixing pin 72 moves out of the positioning slit 25 and moves into the retraction slit 35, the detent of the fixed portion 20 and the movable portion 30 is released, and the fixing clutch 70 is released (invalid).

In the present embodiment, the fixing moving body 71 is driven by the adjustment moving body 81, and the movement of the engaging pin 83 and the movement of the fixing pin 72 described above are interlocked. When the adjustment clutch 80 is invalid, the fixing clutch 70 becomes effective, and when the adjustment clutch 80 is effective, the fixing clutch 70 becomes invalid.
Therefore, with such a configuration, the cooperation of the connecting portion 10, the fixed portion 20, and the movable portion 30 can be switched by a simple operation, and even if the compressed air supplied from the main shaft for the operation is only one system. The two clutches 70 and 80 can be reliably operated.
Further, the two clutches 70 and 80 are not exposed to the outside at all, and can be configured by using the end faces 28 and 38 between the movable portion 30 and the fixed portion 20, so that a compact device can be obtained.

  In the present embodiment, the fixing clutch 70 and the adjusting clutch 80 are driven by compressed air supplied to the connecting portion 10 through the main shaft, so that driving piping installed outside the main shaft head is eliminated. can do.

  In this embodiment, since the positioning slits 25 are arranged at intervals of 15 degrees in the circumferential direction, the spindle head and the fixing unit are engaged by engaging the fixing pins 72 with any of the positioning slits 25 arranged at intervals of 15 degrees. The angular position between 20 and the movable part 30 can be selected at intervals of 15 degrees. Thereby, in the angle head tool 1, main angle positions, such as 30 degrees, 45 degrees, 60 degrees, 90 degrees, 120 degrees, and 180 degrees, which are multiples of 15 degrees, can be appropriately set.

[Modification]
Note that the present invention is not limited to the above-described embodiments, and modifications and the like within a scope in which the object of the present invention can be achieved are included in the present invention.
For example, the arrangement interval of the positioning slits 25 is not limited to every 15 degrees, and may be a smaller angle or a larger angle, and may be unevenly distributed in the circumferential direction.
The arrangement of the fixing pins 72 formed on the fixing moving body 71 may be selected as appropriate. For example, the number of fixing pins 72 may be four at 90 degree intervals, three at 120 degree intervals, two at 180 degree intervals, or only one. .

In the above-described embodiment, the auxiliary cutter 42 is coaxially installed on the opposite side of the main cutter 41. However, this is not essential, and the auxiliary cutter chuck 44 may be used without being attached to the auxiliary cutter chuck 44. It is good also as a structure without.
The angle formed by the axis of the main cutting tool 41 and the axis of the main shaft in the angle head tool 1 is not limited to 90 degrees, and may be 60 degrees, 45 degrees, or the like. In the present invention, a tool capable of adjusting the angle can be obtained by using an existing technique.

  The transmission mechanism 60 is not limited to the rotating shaft 63 and the pair of bevel gears 61 and 62, but may include another gear train when the lower casing 32 is long. In short, it is only necessary to configure a transmission mechanism that can transmit the rotation of the main shaft transmitted to the connection unit 10 to the blade unit 40.

The fixing clutch 70 and the adjusting clutch 80 are not limited to being driven by compressed air supplied to the connecting portion 10 through the main shaft, and may use hydraulic pressure. Moreover, it is not restricted to what mutually interlock | cooperates using the same fluid pressure, You may make it operate | move separately. Furthermore, not only fluid pressure, but also two fixing clutches 70 and adjusting clutch 80 may be configured using two electromagnetic clutches, and control at that time may be wired communication or wireless communication.
Hereinafter, an example using a friction member as the fixing clutch 70 and the adjusting clutch 80 (second embodiment), and an example using a meshing member such as serration as the fixing clutch 70 and the adjusting clutch 80 (third embodiment). An example (fourth embodiment) in which the fixing clutch 70 and the adjusting clutch 80 are individually operated using two electromagnetic clutches will be described.

[Second Embodiment]
In the second embodiment shown in FIGS. 5 and 6, the friction members 72 </ b> A and 83 </ b> A are used as the fixing clutch 70 and the adjusting clutch 80.
In the present embodiment, the friction member 72A is installed around the fixing moving body 71, and the interlocking and releasing as the fixing clutch 70 can be switched by being pressed against or separated from the end face 28 of the fixing member 29. On the other hand, a ring-shaped friction member 83A is supported at the tip of the engagement pin 83, a step-shaped receiving surface 38A is formed on the end surface 38 of the movable member 39, and the friction member 83A is pressed against the bottom surface of the receiving surface 38A. It is possible to switch between interlocking and releasing as the adjusting clutch 80 by being separated.

  In this embodiment, since the fixing is performed by the friction members 72A and 83A, the fixed angle between the fixed portion 20 and the movable portion 30 or the fixed angle between the movable portion 30 and the rotating shaft 63 can be set to a free angle. it can. However, since the fixed angle between the fixed part 20 and the movable part 30 is completely free, it is necessary to determine the relative angle when fixing the fixed part 20 and the movable part 30.

[Third Embodiment]
The third embodiment shown in FIGS. 7 and 8 uses serration members 72B and 83B as the fixing clutch 70 and the adjusting clutch 80.
These serration members 72B and 83B are formed by forming radial (radial direction) serrations on the surfaces of the friction members 72A and 83A of the second embodiment described above. On the other hand, a serration corresponding to the serration member 72B is formed on the end surface 28B of the fixing member 29, and the rotation of the end surface 28B and the serration member 72B is restricted by mutual engagement. Further, serrations corresponding to the serration member 83B are formed on the end surface 38B of the movable member 39, and the rotation of the end surface 38B and the serration member 83B is restricted by mutual engagement.

  In this embodiment, since the fixing is performed by the serration members 72A and 83A, the fixing of the fixed portion 20 and the movable portion 30 or the fixing of the movable portion 30 and the rotating shaft 63 is compared with the friction of the second embodiment. It can be strong. At the same time, the fixed angle between the fixed portion 20 and the movable portion 30 or the fixed angle between the movable portion 30 and the rotary shaft 63 can be set to a relatively free angle corresponding to the serration pitch.

[Fourth Embodiment]
In the fourth embodiment shown in FIGS. 9 and 10, solenoids 71 </ b> C and 81 </ b> C as independent drive sources are used for the fixing clutch 70 and the adjusting clutch 80, respectively.
The solenoid 71C is embedded in the fixed member 29, and drives the central rod 72C forward and backward by receiving a current from a wiring (not shown). The rod 72C is in a state in which the tip does not protrude from the end face 28 of the fixed member 29 in the most retracted state (see FIG. 10), and the tip is disposed in the retraction slit 35 of the movable member 39 in the most pushed state. The rotation of the fixed member 29 and the movable member 39 is fixed by engaging with each other (see FIG. 9).

  The solenoid 81C is embedded in the adjustment moving body 81, and drives the central rod 82C forward and backward by receiving a current from a wiring (not shown). The rod 82C has a tip abutted against the inner bottom surface of the rotating shaft 63, and in the most pushed state, the adjustment moving body 81 is pushed up to accommodate the engaging pin 83 in the rotating cavity 26 of the fixing member 29 (FIG. 9). In addition, in the most retracted state, the adjustment moving body 81 is lowered and the engagement pin 83 is disposed in the retraction slit 35 of the movable member 39, and the fixed member 29 and the movable member 39 are engaged with each other. Is fixed (see FIG. 10).

In this embodiment, the fixing clutch 70 and the adjusting clutch 80 can be switched by an electric operation of the solenoids 71C and 81C. These solenoids 71C and 81C are controlled independently of each other, but it is very easy to perform exclusive control electrically.
In the present embodiment, the fixing moving body 71, the fixing pin 72, the coil spring 73, the thrust bearing 74, and the coil spring 82 of the first embodiment described above can be omitted. For this reason, the structure can be greatly simplified.

[Fifth Embodiment]
The angle head tool of the present invention is in the form shown in FIGS. 1 and 2, that is, with respect to the axis of the fixed portion 20 on the lower surface of the cylindrical intermediate casing 31 (the same as the axis of the connecting portion 10 and the axis of the main shaft). For example, as in the fifth embodiment shown in FIG. 11, a cylinder in which an axis line is arranged in the horizontal direction at the lower end of the cylindrical intermediate casing 31 </ b> A. It is good also as a form which has the shape of the lower casing 32A.

In FIG. 11, the angle head tool of the present embodiment has a connection portion 10, a fixed portion 20, a movable portion 30, a blade portion 40, and an engagement mechanism 50, as in the above-described embodiments. A transmission mechanism 60, a fixing clutch 70, and an adjusting clutch 80 are formed inside.
Further, in each of the above embodiments, the main cutter 41 is relatively large and the opposite auxiliary cutter 42 is relatively small, whereas the cutters 41A and 42A of the present embodiment have the same size. . In addition, the main cutter 41 and the auxiliary cutter 42 in each of the embodiments are cutters that are long in the axial direction, whereas the cutters 41A and 42A of the present embodiment have a flat base in the axial direction like a so-called milling cutter. It is assumed that a knife tip is arranged.

Also according to this embodiment, the same effects as those of the above-described embodiments can be obtained.
Also in the fifth embodiment shown in FIG. 11, various clutch mechanisms as shown in the first to fourth embodiments described above can be employed as appropriate.

  The present invention relates to an angle head tool and can be used as a tool for rotating a cutter around an axis in a direction intersecting with an axis of a main shaft.

  DESCRIPTION OF SYMBOLS 1 ... Angle head tool, 10 ... Connection part, 11 ... Taper shank, 12 ... Pull stud, 13 ... Gripping part, 14 ... V groove, 15 ... Key groove, 20 ... Fixing part, 21 ... Upper casing, 25 ... Slit, 26 ... Circumferential cavity, 27 ... Central hole, 28 ... Fixed side end surface, 29 ... Fixed member, 30 ... Movable part, 31 ... Intermediate casing, 32 ... Lower casing, 35 ... Retraction slit, 36 ... Retraction cavity, 37 ... Central hole , 38 ... movable side end face, 39 ... movable member, 40 ... cutter part, 41 ... main cutter, 42 ... auxiliary cutter, 43 ... main cutter chuck, 44 ... auxiliary cutter chuck, 49 ... cutter axis, 50 ... engagement mechanism, DESCRIPTION OF SYMBOLS 51 ... Expansion casing, 52 ... Chuck for engagement, 60 ... Transmission mechanism, 61 ... Bevel gear, 62 ... Bevel gear, 63 ... Rotating shaft, 64 ... Fluid path, 70 ... Clutch for fixing, 71 ... Fixing Moving body, 71C ... solenoid, 72 ... fixed pin, 72A ... friction member, 72B ... serration member, 73 ... coil spring, 74 ... thrust bearing, 80 ... adjustment clutch, 81 ... adjustment moving body, 81C ... solenoid, 82 ... Coil spring, 83 ... Engagement pin, 84 ... Insertion slit, 83A ... Friction member, 83B ... Serration member.

Claims (5)

A connecting portion connected to a main shaft rotatably supported by the main shaft head and rotatable integrally with the main shaft; a fixing portion supported by the connecting portion and rotatable about an axis of the connecting portion; and the fixing portion And a movable part that is supported around and rotatable about the axis of the fixed part,
A blade shaft supported by the movable portion and rotatable about an axis intersecting the main shaft and having a blade mounted at a tip thereof; a rotation shaft coupled to the connection portion and inserted through the fixed portion and the movable portion; A transmission mechanism for transmitting rotation of the rotary shaft to the cutter shaft, a set of engagement mechanisms for engaging the fixed portion with the spindle head, and engaging the movable portion with the fixed portion. And a fixing clutch that fixes the movable portion to the spindle head, and an adjustment clutch that engages the movable portion with the rotating shaft and rotates the movable portion integrally with the main shaft. Angle head tool characterized by   2. The angle head tool according to claim 1, wherein the fixing clutch and the adjusting clutch are driven by the same drive source, and are linked so that when one is valid, the other is invalid. Angle head tool.   The angle head tool according to claim 2, wherein the fixing clutch and the adjusting clutch are driven by a fluid supplied to the connecting portion through the main shaft. Te angle head tool smell of claim 2 or claim 3,
The fixed portion includes a fixed-side end surface orthogonal to the rotating shaft and facing the movable portion, a central hole through which the rotating shaft is inserted, and a circular cavity formed around the central hole of the fixed-side end surface And a plurality of positioning slits formed around the cavity of the fixed-side end surface,
The movable portion has a movable side end surface orthogonal to the rotation axis and facing the fixed portion, and a retraction slit formed in the movable side end surface and extending in a radial direction,
The fixing clutch includes a fixing moving body that is movable in the axial direction along the rotation axis, and a distal end that extends in a radial direction from the fixing moving body and has a tip that is moved along the movement of the fixing moving body. A fixed pin movable from the inside into the retraction slit,
The adjustment clutch includes an adjustment moving body that is movable in the axial direction along the rotation axis, and protrudes from the adjustment moving body in a radial direction, and from within the circulating cavity as the adjustment moving body moves. An angle head tool having an engagement pin movable to the retracting slit.   5. The angle head tool according to claim 4, wherein the positioning slits are arranged at intervals of 15 degrees in the circumferential direction.

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