JP2588689Y2 - Turning tool holder for lathe - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary tool holder for a combined lathe, and more particularly to a universal type rotary tool holder.

[0002]

2. Description of the Related Art Conventionally, a tool holder in a combined lathe has
Holders for rotating tools such as end mills and drills as well as for fixed tools such as various cutting tools are required. These dedicated rotating tool holders have been prepared for peripheral machining, end face machining, and oblique hole machining. FIG. 5 shows an example of a rotary tool holder for end face machining. A rotary tool holder 104 having a rotary tool axis 103 perpendicular to the input shaft 102 is rotated at one of rotary tool mounting stations provided on the outer periphery of the turret 101. The tool shaft 103 is detachably mounted with the tool shaft 103 facing the main spindle side in the Z-axis direction.

[0003]

The method of preparing various kinds of dedicated tool holders described in the prior art has a problem that the number of types of tool holders increases, so that the tool cost increases and the storage management cost also increases. In addition, if it is a lathe that performs simultaneous front and back processing such as a counter spindle lathe or a lathe with a sub spindle, a tool holder for back processing is required,
The above-mentioned problem becomes more and more serious. The present invention has been made in view of such problems of the prior art,
It is an object of the present invention to provide a universal type rotary tool holder that can perform peripheral processing, end face processing, diagonal processing, and front / back processing with one type of rotary tool holder.

[0004]

In order to achieve the above object, a rotary tool holder for a lathe according to the present invention has an X-Z direction.
A rotary tool holder for facing spindle lathe incorporating a <br/> rotating tool drive means in a plurality of tool mounting position of the counter movable turrets turret, and holder body, the tool mounting position before Northern Rett An input shaft detachably mounted on the outer end and having a first bevel gear with a built-in clutch for coupling with the rotating tool driving means at the outer end, the input shaft being rotatably supported by the holder body ; Input shaft
Has a second bevel gear that meshes with the first bevel gear, and is perpendicular to the input shaft.
At least between 0 ° and 180 ° about the main axis.
Movable body rotatably supported on the holder body
And a third bevel gear meshing with the second bevel gear.
A rotating tool that is rotatably supported at right angles to the axis of rotation of the moving body
The movable body is fixed at an indexing position with respect to the shaft and the holder body.
And means for determining . Also, X and Y axes
Multiple tool mounting positions for turrets on turrets that can be moved in different directions
For turning a counter-spindle lathe with built-in rotary tool driving means
Tool holder, tool holder and turret tool mounting
Position at the outer end of the rotary tool driving means
A first bevel gear at the inner end of the clutch
An input shaft that is rotatably supported by the rudder body;
Rotate concentrically at least between 0 ° and 180 °
A movable member provided on the holder as possible, and the first bevel tooth
It has a second bevel gear meshing with the car, and has a shaft perpendicular to the input shaft.
A rotary tool rotatably supported on the movable body as a center
The movable body is indexed with respect to the shaft and the holder body.
Fixing means. Further, a cutting fluid nozzle facing the tip end side of the rotary tool shaft is provided on the movable body so that it can follow the turning of the movable body.

[0005]

The rotary tool holder according to the first aspect of the present invention is used for peripheral machining by removing the clamp bolt, indexing the movable body so that the rotary tool shaft is concentric with the input shaft, and tightening the clamp bolt again. Similarly, if the movable body is indexed so that the rotary tool axis faces the left side in the Z-axis direction, it is used for machining the front side end surface of the work to be gripped by the left spindle chuck. It is useful. If the movable body is indexed so that the rotary tool axis faces right in the Z-axis direction, it is used for machining the back side end face of the work gripped by the right-hand counter spindle chuck. For processing.

In the rotary tool holder according to the second aspect, similarly to the rotary tool holder according to the first aspect, the clamp bolt is removed, the movable body is indexed so that the rotary tool shaft faces right in the Z-axis direction, and the clamp bolt is tightened. Thus, when the movable body is indexed to the left side, it is used for processing the end face on the front side of the work. Further, if it is directed upward or downward, it is for machining in the Y-axis direction, and it is for oblique hole machining at any intermediate angle.
Further, it is not necessary to adjust the cutting fluid nozzle by rotating indexing of the movable body.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment will be described with reference to FIGS. 1, two sets of Z-axis guides 1a and 1b are provided on a bed 1.
a first headstock 2 and a second headstock 3 are movably mounted on a common spindle axis, the first headstock 2 is driven by a servomotor 4, and the second headstock 3 is driven by a servomotor 5. Are moved and positioned. A first spindle is mounted on the first headstock 2 and a second spindle is rotatably supported on the second headstock so as to face each other.
However, a second chuck 7 is fitted to the tip of the second spindle.

Further, a saddle 8 is provided on the Z-axis guide 1b of the bed 1.
Are mounted so as to be movable, and the saddle 8 is moved and positioned by a servomotor 9. A guide 8a in the X-axis direction is provided on the saddle 8, and a first tool post 11 is movably mounted on the X-axis guide 8a, and the first tool post 11 is moved and positioned by the servomotor 10. You. A first turret 12 is provided on the first turret 11 so as to be able to turn around a turning center axis in the Z-axis direction.
A plurality of tool mounting stations for fixed tools and rotary tools are provided on the outer periphery of 2.

On the other hand, the moving table 1 is almost at the center of the back of the bed 1.
3 is provided so as to be movable and positioned in the Y-axis direction, and the second tool rest 14 is movably mounted on an X-axis guide 13a provided on the upper surface of the moving board 13; It is moved and positioned by the motor 17. 2nd turret 1
4 is provided with a second turret 15 so as to be able to rotate around a rotation center axis in the Z-axis direction.
A plurality of tool mounting stations for fixed tools and rotary tools are provided on the outer periphery of the tool.

FIGS. 2 and 3 show a rotary tool holder removably mounted on the rotary tool tool mounting station of the first turret 12 or the second turret 15. The holder body 18 of the rotary tool holder has a shank 18A and two side plates 1.
8B. An input shaft 19 is rotatably mounted on the shank 18A. The input shaft 19 has a bevel gear 21 integrally at the front end, and is engaged with a clutch at the rear end of rotary tool driving means built in the tool rests 12, 15 at the rear end. A releasably engaging clutch 22 is fitted. The side plate 18B of the holder body 18 is fixed to the upper and lower surfaces of the shank 18A,
The bevel gear 24 with a shaft is mounted on the lower side plate 18B via a plurality of bearings.
Are pivoted at right angles to the input shaft 19, and the bevel gear 24 is meshed with the bevel gear 21.

[0011] The movable member 25 has the rotating tool shaft 26 is journalled for rotation, the movable member 25 has a right-angled pivot axis 25a, 2 5 b against the rotary tool axis 26, one of the turning The center shaft 25b is supported by the center hole of the shafted bevel gear 24, and the other turning center shaft 25a is supported by concentric holes of the upper side plate 18B via a plurality of bearings so as to be rotatable in the X / Z axis plane. I have. Further, the turning center axis 25a is provided on the side plate 18B.
A plurality of arc-shaped long holes 18a are engraved at the same pitch concentrically with the four holes 2a at positions corresponding to the long holes of the movable body 25.
5d is engraved. And these four screw holes 25d
The two mounting bolts 30 are selectively screwed together, and by tightening the clamp bolts 30, the rotating tool shaft 26 is rotated at least 180 degrees from the first headstock 2 side to the second headstock 3 side in the Z-axis direction.位置 決 め Possible to position at any angle. A bevel gear 27 that meshes with the bevel gear 24 is fitted to the rotary tool shaft 25, and a rotary tool T is detachably attached to a tapered end of the rotary tool via a collet bush 28.

The first turret 12 and the second turret 15 are provided with a cutting fluid joint 29 supplied through a turret swivel center from a cutting fluid device (not shown) near the tool mounting station. Sometimes, it communicates with a flow path 18b formed in the holder body 18. And the flow path 18b is the flow path 18 of the side plate 18B.
Through c, it is communicated with the cutting fluid nozzle 31 attached to the tip of the flow path 25c of the movable body 25. Therefore, since the cutting fluid nozzle 31 is turned together with the movable body 25, the cutting fluid is always discharged toward the cutting edge position of the rotary tool T. The cutting direction of the cutting fluid nozzle 31 can be freely changed.

Next, the operation of the first embodiment will be described. When changing the rotary tool holder from the outer peripheral processing shown by the solid line in FIG. 2 to the end face processing corresponding to the first headstock 2, the clamp bolt 30 is removed, and the movable body 25 is turned 90 ° clockwise.
After turning, the zero mark on the movable body side is aligned with a positioning means (not shown), for example, a 0-degree position on the scale, and the clamp bolt 30 is screwed into the corresponding screw hole 25d again. When changing to the end surface processing corresponding to the second headstock 3, the clamp bolt 30 is removed in the same manner, the movable body 25 is turned counterclockwise to align the zero mark at the position of 180 ° on the scale, and is attached again. Screw the bolt into the corresponding screw hole.

In the case of diagonal drilling, when the first headstock 2 is used, the specified angle is between 0 ° and 90 ° on the scale, and when the second headstock 3 is used, the specified angle is between 90 ° and 180 °. At the specified angle, the zero mark of each movable body 25 is aligned and clamped by the mounting bolt 30. For example, when the rotary tool holder of the second tool rest 14 is used for oblique hole machining, the X-axis feed of the second tool rest 14 and the Z-axis feed of the first head stock 2 or the second head stock 3 are controlled synchronously. Then, a diagonal hole is formed on the outer circumference or end face of the work.

Next, a second embodiment will be described with reference to FIG. The description of the same parts as in the first embodiment will be omitted to avoid duplication. An input shaft 52 is rotatably mounted on a holder body 51 of the rotary tool holder.
The input shaft 52 has a bevel gear 53 integrally at the front end, and a clutch 54 is fitted at the rear end. A movable body 55 is provided on the holder main body 51 so as to be rotatable around the axis of the input shaft, and a rotary tool shaft 56 is mounted on the movable body 55 at right angles to the center of rotation. A bevel gear 53 is provided on the rotary tool shaft 56.
The rotating tool T is detachably attached to the tapered hole at the tip end via a collet 58.

The movable body 55 is provided with a plurality of arc-shaped long holes (not shown) concentric with the center of rotation, and the input shaft 52 is formed by a plurality of clamp bolts 59 passing through the long holes.
At least 180 ° in the plane of the Z and Y axes
The turning tool shaft 56 can be attached at an arbitrary angle so that the rotary tool shaft 56 is directed to the direction of the arbitrary angle in between the first headstock 2 side or the second headstock 3 side in the Z-axis direction as well as the intermediate direction. . Therefore, when the movable body 55 is clamped to the holder body 51 so that the rotary tool shaft 56 faces the first headstock 2 side,
When the movable body 55 is clamped to the holder main body 51 so as to face the second headstock 3, it is used for processing the end face corresponding to the first headstock. Also, when mounted on the second turret 15 and clamped downward or upward in the Y-axis direction, the movable table 13 is used for Y-axis machining by Y-axis feed, and when clamped so as to face an intermediate angle direction, the first position is used. The combination of the Z-axis feed of the headstock 2 or the second headstock 3 and the Y-axis feed of the moving stand 13 is used for oblique hole machining.

[0017]

[Effects of the Invention] The present invention is configured as described above and has the following effects. In the rotary tool holder for a lathe according to the first aspect, the movable body can be turned at least 180 ° and indexed at an arbitrary angle on the plane parallel to the X and Z axes. processing,
Oblique hole processing and front and back processing are possible. In the rotary tool holder for a lathe according to the second aspect, since the movable body can be flipped by 180 ° in the plane parallel to the Z and Y axes, it is possible to process the front and back of the end face with one type of tool holder and have a Y axis function. Y axis machining and diagonal hole machining are possible by mounting on the tool post.
You. For this reason, the types of tool holders are reduced, selection is simple, direct costs for preparing the tool holders are reduced, and indirect costs such as maintenance management can be reduced. Further, since the degree of freedom of the turning angle is high, there is no restriction on the processing, and the processing capability can be fully exhibited. Furthermore, the number of gear shafts is reduced and the configuration is compact
And contributes to cost reduction. Furthermore, the turning of claim 3
Since the rotary tool holder for the board follows the rotation of the rotary tool axis,
Coolant supply is ensured even for rotation of the rotating tool shaft.
is there.

[Brief description of the drawings]

FIG. 1 is a perspective view of a facing two-axis lathe to which a rotary tool holder according to a first embodiment is mounted.

FIG. 2 is a front view of the rotary tool holder according to the first embodiment.

3A is a side view of FIG. 2, and FIG. 3B is a side view of FIG.

FIG. 4 is a front view of a rotary tool holder according to a second embodiment.

FIG. 5 is a front view of a conventional rotary tool holder dedicated to end face processing.

[Explanation of symbols]

12,15 turret 18,51
Holder body 18A Shank 18B Side plate 18a Arc-shaped long hole 19,52
Input shaft 25, 55 Movable body 26, 56
Rotary tool shaft 30,59 Clamp bolt 31 Cutting fluid nozzle T Rotary tool

Claims (3)

(57) [Scope of request for utility model registration] 1. A tool post turret movable in X and Z directions.
Built- in rotary tool driving means at multiple tool mounting positions
A rotary tool holder for an opposed spindle lathe, comprising: a holder body
When, it is detachably mounted on the tool mounting position before Northern Rett
At the outer end, a clutch for connection with the rotating tool driving means is connected at the inner end.
Having a first bevel gear so as to be pivotable on the holder body.
Input shaft and a second bevel gear meshing with the first bevel gear of the input shaft .
Bevel gears and at least around an axis perpendicular to the input shaft
The holder is rotatable at an angle between 0 ° and 180 °.
Movable body supported by the main body meshes with the second bevel gear
It has a third bevel gear and can rotate at right angles to the rotation axis of the movable body
The rotary tool shaft supported by the
Means for fixing the movable body at the indexing position . 2. A tool rest of a tool rest movable in X and Y directions.
Built-in rotary tool driving means at multiple tool mounting positions
A rotary tool holder for an opposed spindle lathe, comprising: a holder body
And the outer end is detachably attached to the tool mounting position of the turret.
The clutch for connection with the rotating tool driving means is
One bevel gear is rotatably supported on the holder body.
An input shaft and at least 0 ° to 18 concentric with the input shaft.
It is provided in the holder so as to be rotatable by dividing it between 0 °
A movable body, and a second bevel gear meshing with the first bevel gear.
The movable so as to be able to pivot around an axis perpendicular to the input shaft
The rotary tool shaft supported on the body and the holder body
Means for fixing the movable body in the indexing position.
Rotary tool holder for boards. 3. The rotary tool for a lathe according to claim 1, wherein a cutting fluid nozzle facing the tip end side of the rotary tool is provided on the movable body so as to follow the turning of the movable body. holder.