JPS6153183B2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to an indexing device for a machine tool.

In conventional machine tools, such as machining centers, the table that supports the workpiece is often indexed and rotated around one axis, and when machining a workpiece that has machining locations in multiple directions, the An indexing table is further mounted on the table so that the indexing table can be properly indexed and rotated. Therefore, means for attaching the indexing table and means for driving the indexing table must be specially provided, which is very cumbersome.

The main object of the present invention is to eliminate such conventional drawbacks and to enable the above-mentioned processing to be accomplished with a simple structure.

To achieve this object, according to the invention, a main indexing shaft is mounted on the support such that it can be displaced in the axial direction and indexed and rotated about the axis, and between the main indexing shaft and the support. When the main indexing shaft is displaced in one direction in the axial direction, the main indexing shaft becomes engaged and fixes the main indexing shaft to the support, and when the main indexing shaft is displaced in the other direction in the axial direction. A first carboxylic coupler is provided at the rear portion of the support, and the main indexing shaft is indexed and rotatably released from the support when the main indexing shaft is disengaged from the support. In a device equipped with a rotating mechanism and a mechanism for displacing the main indexing shaft in the axial direction, a bracket is fixed to the front part of the main indexing shaft, and a rotating table capable of supporting the workpiece is attached to the bracket. The rotary table is displaceable in the direction of a second axis forming an angle with the axis and is mounted so as to be indexable and rotatable about the second axis, and the rotary table is disposed between the rotary table and the bracket and displaced to one side in the direction of the second axis. When the rotary table is in an engaged state, the rotary table is fixed relative to the bracket, and when the rotary table is displaced in the other direction in the direction of the second axis, the rotary table is in a disengaged state, and the rotary table is fixed relative to the bracket. A second kerbic coupler is provided for indexing and rotatably releasing the indexing shaft, an actuating tube coaxial therewith is mounted in the main indexing shaft so as to be displaceable in the axial direction, and the actuating tube is disposed in the bracket. A mechanism for displacing the actuating tube in the axial direction is provided at the rear part of the main indexing shaft, and the rotary table is mounted on the bracket. A fluid actuated mechanism for displacement in two axes is provided, and a fluid passageway is provided in the actuating tube and bracket extending from a rear portion of the actuating tube through the actuating tube and bracket to the fluid actuating mechanism. A multi-spindle indexing device for a machine tool is provided.

According to such a multi-axis indexing device, indexing rotation about the axis of the main indexing shaft and indexing rotation about the second axis forming an angle with the axis of the main indexing shaft can both be achieved. For example, workpieces having multi-directional machining points can be machined with just one installation, resulting in significantly increased work efficiency.
This is particularly important in machining centers where various types of machining are automatically and sequentially performed under numerical control. Moreover, since the fixation in the indexed position is carried out by means of a carbic coupling, the workpiece can be reliably held in the indexed position.

Furthermore, in this multi-axis indexing device, the rotary table on which the workpiece is mounted is arranged in front of the support, and therefore the machining of the workpiece is achieved in front of the support, whereas Elements to be controlled during axis indexing: ``mechanism for indexing and rotating the main indexing axis'' and ``mechanism for displacing the main indexing axis in the axial direction''
and ``a mechanism for displacing the actuating tube in the axial direction to achieve index rotation of the rotary table'' are concentrated at the rear of the support, and ``the rotary table is
Since a "fluid path for displacing in the direction of the axis" is provided in the working tube, control of multi-axis indexing can be achieved centrally and without disturbing the processing space (tooling space). This is particularly important in machining centers since, together with the aforementioned multidirectional machining, it makes it possible to machine as large a workpiece as possible with limited tooling space.

Embodiments of the present invention will be described in detail below with reference to the drawings.

In FIG. 1, which is a perspective view showing the arrangement of the main components of a horizontal machining center, which is an example of a machine tool, the X-axis slide indicated by the reference numeral 10 is a Y-axis main body extending in the first horizontal axis direction (Y). It has 11. The Y-axis main body 11 is driven by a Y-axis servo motor 12 located behind the X-axis slide 10, and is driven by a transmission mechanism including a ball screw 13 and a ball screw nut portion 14 fixed to the Y-axis main body as shown in FIG. (arrow Y) in a first horizontal axis direction (Y).

Inside the Y-axis main body 11 is a B-axis 15 which similarly has an axis in the Y direction and can move in the axial direction.
Mounted so that it can rotate in any direction. B axis 15
A B-axis piston 17 that can slide in a cylinder chamber 16 formed in the Y-axis main body 11 is disposed on a part of the circumference of the Y-axis body 11.
is installed so that it does not move in the axial direction with respect to the B-axis, and if fluid such as pressure oil is supplied to the front portion 16a of the cylinder chamber 16, the B-axis 15 will be connected to the Y-axis main body 11.
The B shaft 15 moves forward by supplying fluid to the rear portion 16b of the cylinder chamber. B axis 15
The front end portion 18 is formed into a large flat plate shape, and the Y-axis main body 11 has a concave portion 19 that accommodates the flat front end portion 18.
has. The rear surface of the front end portion 18 and the bottom or front surface of the recessed portion 19 are provided with mutually engageable, e.g.
Spur teeth 20 and 21 each having 72 teeth (ie, 5 degree teeth) are formed. These spur teeth 20, 21 form a curvy coupling. At the rear end of the Y-axis main body 11 is a B-axis indexing motor 2.
2 is fixed, and this motor 22 can rotate the B-axis 15 relative to the Y-axis body 11 via a suitable gear mechanism 23. In order to achieve index rotation of the B-shaft 15, the B-shaft 15 is advanced by supplying fluid to the rear portion 16b of the cylinder chamber to engage the spur teeth 20 and 21, i.e. the engagement of the curvilinear coupling. After removing the alignment, the B-axis indexing motor 22
The B-axis 15 is rotated by. After the desired angle of rotation, the B-shaft 15 is retracted by supplying fluid to the forward portion 16a of the cylinder chamber so that the spur teeth 20 and 21 engage each other in the new indexed position. Thus, the B axis 15 moves to the Y position at the new index position.
It is fixed to the shaft body 11. As is clear from this, the B-axis 15 constitutes the main indexing axis, and the Y-axis main body 11 is considered to be its support.

Next, referring to FIGS. 2, 3, and 4, the flat front end 18 of the B shaft 15 has an L
A vertical leg 25 of the bracket 24 is fixed by a screw 26, and a rotary table 28 is disposed on a second leg 27 of the L-shaped bracket 24 perpendicular to the vertical leg 25 so as to be rotatable in the A direction. rotary table 28
is the front surface 2 that fixedly supports the workpiece (not shown).
9, and an A-shaft 31 that protrudes rearward from the table main body 30, and the A-shaft 31 is connected to the second leg 27 of the L-shaped bracket 24.
penetrates in a direction perpendicular to the B axis 15. On the rear surface of the table body 30 of the rotary table 28 and on the front surface of the second leg 27 of the L-shaped bracket 24, spur teeth 32 and 33 having, for example, 72 teeth (i.e., teeth in 5-degree increments) that can engage with each other are provided, respectively. It is formed. The spur teeth 32, 33, like the spur teeth 20, 21, form a carboxylic coupling. An A-axis piston 35 is fixed to the A-axis 31 and is capable of sliding in a cylinder chamber 34 formed in the second bracket leg 27, and supplies fluid such as pressure oil to the front portion 34a of the cylinder chamber 34. If the rotary table 28 is displaced rearward (downward in FIG. 2), the spur teeth 32 and 33 engage with each other, and the rotary table 28 moves toward the L-shaped bracket 2.
Fixed to 4. The rotary table 28 is rotated to the front (second position) by a spring 34c (shown in FIG.
The rotary table 28 is disposed so as to always receive a force in the direction of displacement (upward in the figure), and therefore, if pressure oil is released from the cylinder chamber front portion 34a to the drain, the rotary table 28 will be displaced forward by the action of the spring and the spur tooth 32 The carboxylic coupling formed at 33 is removed, and the rotary table 28 is now free to rotate relative to the L-shaped bracket 24. Therefore, the rotary table 28 is B
L-shaped bracket 2 which is a member fixed to shaft 15
4, it can be indexed and rotated in the A direction.

In order to index and rotate the rotary table 28, an actuation tube 36 extends within the B-axis 15 and is arranged to be slidable axially relative to the B-axis 15.
As shown in FIGS. 3 and 4, the actuating tube 36 has at its front end a rack portion 37 which is connected to the first gear 39 of the gear train 38 disposed in the L-shaped bracket 24. engage. An A-axis gear 40 is fixed to the rear end of the A-axis 31 of the rotary table 28, and the final gear 41 of the gear transmission train 38 is connected to the A-axis gear 40 when the rotary table 28 and therefore the A-axis gear 40 is displaced forward. Although engaged, the rotary table 28 and therefore the A-axis gear 40 are disposed so as not to engage with the A-axis gear 40 when they are displaced rearward. Therefore, when the rotary table 28 is displaced rearward and is fixedly held against the L-shaped bracket 24 by the carbyk couplings 32 and 33, the teeth 40 and 41 are not engaged, so that the rotary table 28 cannot be operated. Even if the tube 36 moves, the movement is not transmitted to the rotary table 28, but the motion is not transmitted to the rotary table 28.
8 is displaced forward and can rotate freely, the gears 40 and 41 are engaged, so when the operating tube 36 is displaced in the axial direction, the rotary table 28 is moved through the gear transmission train 38. Make a corresponding rotational movement. Gear 40 is further arranged so that it always engages a rack 41a located within L-shaped bracket 24 when it is not fully engaged with gear 41. In addition, this rack 41a is actually
As shown in FIG. 3, it is located at a position laterally displaced from the gear 41 in the plan view. According to this,
When the carbic coupler springs 32 and 33 are disengaged, the rotary table 28 may rotate due to the unbalance of the workpiece, or the gear 40 may rotate with the gear 40 slightly engaged with the gear 41. The risk of these gears being damaged due to rotational movement can be avoided.

To achieve the axial displacement of the actuating tube 36, B
A cylinder 43 of a fluid motor 42 is fixed to the rear end of the shaft 15, through which the rear portion of the actuating tube 36 passes.
In particular, as shown in FIG. 5, the cylinder chamber 44 formed in the cylinder 43 consists of a small-diameter portion at the front and a large-diameter portion at the rear, and the actuating pipe 36 is formed in the cylinder 43 with a small diameter portion. It has a main piston 45 that is slidably in close contact with the wall surface of the section, and has a large outer diameter at the front and a small outer diameter at the rear. An intermediate piston 46 is slidably fitted around the rear portion of the actuating tube 36 with a small external diameter, and is slidably in close contact with the wall of the cylinder chamber at its central location. . According to such a configuration, the cylinder chamber 44 has a first rear portion 44e behind the intermediate piston 46, a second rear portion 44f between the main piston 45 and the intermediate piston 46, and a front portion 44g in front of the main piston 45. be divided. When fluid is supplied to the front portion 44g of the fluid motor 42 as indicated by G, the actuating pipe 36 is located at the rear position as shown in FIG. 5a. Thereafter, when fluid is supplied to the first rear portion 44e as shown at E, the actuating tube 36 advances by a stroke shown at SE in FIG.
The position shown in figure b is reached. Instead, when the second rear portion 44f is supplied with fluid as indicated by F, the actuating tube 36 is advanced by a distance SF as shown in FIG. 5c. This operation will be explained in more detail later with reference to FIG. These strokes are, for example, when the gears 40 and 41 are engaged and therefore the carbyk couplings 32 and 33 are disengaged, and the actuating tube 36 advances by a stroke SE, the rotary table 28 rotates 5 degrees and the stroke The rotary table 28 is selected to rotate 45 degrees when moving forward by SF.

The retracted position (the position shown in FIG. 5a), the first forward position (the position shown in FIG. 5b), and the second forward position (the position shown in FIG. 5c) of the actuation tube 36 are located near the rear end of the actuation tube 36. 47g of switches arranged so that they can be contacted;
This is confirmed by switch 47e and switch 47f, respectively.

The rotary table 28 is rotated by the rotation table 28.
2, 33, a push rod 49 extending axially and pushed forward by a spring 48 is inserted through the actuating tube 36. Furthermore, in front of this push rod 49, an L-shaped push plate 50 is arranged, which is made up of a first leg 50a extending upward in the drawing and a second leg 50b extending horizontally integrally with the first leg 50a. 50
A is a diagram showing a vertically extending guide hole 101 formed in the front part of the vertical leg 25 of the L-shaped bracket 24.
(In the drawing, it is shown that there is a gap between the first leg 50a and the guide hole 101, but in reality, they are slidably in contact with each other.) ), the tip of this first leg 50a is always in contact with the tapered portion 51 at the tip of the push rod 49. Also, the second leg 50 of the push plate 50
The tip of b is positioned so as to always fit into the circumferential groove 101 formed in the rotary table 28. When the rotary table 28 is displaced forward (upward in the drawing) and the carbyk couplings 32 and 33 are disengaged, the push rod 50 is also displaced upward in accordance with the upward displacement of the rotary table 28. Since the one leg 50a and the tapered portion 51 of the push rod 49 are in contact with each other, the push rod 49 is pushed backward (to the left in the drawing) against the action of the spring 48, and this backward movement causes the push rod to 4
The switch 52, which is disposed in contact with the rear end of the push rod 49, falls into the groove formed in the push rod 49, thereby confirming the disengaged state. rotary table 28
is displaced rearward, and the curvy coupling spring 32,
33 is engaged, the push plate 50 engages the push rod 49
The push rod 49 moves in the direction away from the
It moves forward while contacting the push plate 50 by the action of the spring 48. As a result, the switch 52 returns to its original position and the engaged state is confirmed.

The push rod 49 pushes fluid such as pressure oil into the cylinder chamber 34.
For this purpose, the push rod 49 is formed in the shape of a tube through which the fluid passage 53 passes. The fluid passage 53 is connected to a fluid supply pipe 54 at the rear end of the push rod 49 and communicates with the front part 34a of the cylinder chamber 34 through a fluid passage 55 in the L-shaped bracket 24 at the front part.

FIG. 6 shows the above-mentioned carboxylic coupling 2.
fixation of the B-axis 15 by means of 0, 21 (engagement of this coupling by retraction of the B-axis) and release of the B-axis 15 (release of this coupling by advancement of the B-axis), rotary table 28 by means of carby couplings 32, 33; (the engagement of this coupling by retraction of the A-axis 31) and the rotary table 2
8 (release of this coupling by advancement of the A-axis) as well as the fluid circuit for achieving indexed rotation of the rotary table 28.

In FIG. 6, P indicates a supply path that supplies fluid from a fluid (pressure) supply source (not shown);
T indicates a drain path that returns fluid to the source. code 5
A supply port P1 connected to the supply path P and a drain port T1 connected to the drain path T are provided on one side of the first switching valve indicated by 6, and a first cylinder chamber of the fluid motor 42 is provided on the other side. An opening E1 communicating with the rear portion 44e and an opening F1 communicating with the second rear portion 44f of the cylinder chamber are provided. fluid motor 42
The front portion 44g of the cylinder chamber is always connected to the supply path P. When the first switching valve 56 is located at the neutral position shown, both the first rear portion 44e and the second rear portion 44f communicate with the drain path T, so fluid is supplied from the supply path P to the front portion 44g. As a result, the fluid motor 42 is in the state shown in FIG. 5a. Next, when the first switching valve 56 is displaced downward in FIG. 6, the first rear portion 44e communicates with the supply path P, and the second rear portion 44f communicates with the drain path T. At this time, the front portion 44g is still in communication with the supply path P, but as can be seen from the above, the cross-sectional area of the first rear portion 44e is larger than the cross-sectional area of the front portion 44g. The intermediate piston 46 and the main piston 45 move forward due to the pressure of the applied fluid, the fluid in the front portion 44g is pushed back to the supply path P, and the fluid in the second rear portion 44f is discharged to the drain path T. be done. Thus, fluid motor 42
The state changes from the state shown in FIG. 5a to the state shown in FIG. 5b, and index rotation of the rotary table 28 by 5 degrees is achieved by the advancement of the stroke SE of the main piston 45 and thus the actuating tube 36. When the first switching valve 56 is displaced upward from the neutral position in FIG. 6, the second rear portion 44f communicates with the supply path P, and the first rear portion 44e communicates with the drain path T, as described above. Similarly, the fluid motor 42 changes from the state shown in FIG. 5a to the state shown in FIG. 5c. This achieves 45 degree index rotation of the rotary table 28.

The second switching valve 57 has a supply port P2 connected to the supply path P and a drain port T2 connected to the drain path T on one side, and one of the two openings provided on the other side is connected to the B Cylinder chamber 16 for displacement operation of shaft 15
The other opening communicates with the front portion 16a of the cylinder chamber 16. When the second switching valve 57 is located at the lower position shown in FIG. 6, the rear portion 16b and the front portion 16a communicate with the drain path T and the supply path P,
The shaft 15 is moved back and the coupling springs 20,2
1 is achieved. Second switching valve 5
7 is displaced upward from the position shown in FIG.
moves forward and is therefore in a released state.

The third switching valve 58 shown in FIG. 6 has a supply port P3 connected to the supply path P and a drain port T3 connected to the drain path T on one side, and only one opening provided on the other side. communicates with the A-axis 31 and thus with the front portion 34a of the cylinder chamber 34 for displacement operation of the rotary table 28. When the third switching valve 58 is located at the lower position shown in the figure, the front portion 34a
Fluid is supplied from the supply path P to move the A-axis 31 backward, and the rotary table 28 is fixed by the carbyk couplings 32 and 33. When the third switching valve 58 is displaced upward from the illustrated position, the front portion 34a communicates with the drain path T, and the A-shaft 31 is moved by the action of the spring 34c etc. disposed in the rear portion 34b of the cylinder chamber 34. When moving forward, the fluid in the front portion 34a is discharged to the drain path T. The rotary table 28 is thus released.

Next, the 45-degree indexing operation of the rotary table 28 will be explained in particular. When 45 degree indexing is commanded by the program, the switch 52 (Fig. 2) determines "fixed/released", and when it is confirmed that the rotary table 28 is "fixed", the third switching valve 58
is actuated to be displaced upward in FIG. 6, the rotary table 28 moves forward, the carbic couplings 32 and 33 are released, and the A-axis gear 40 is moved to the final gear 41 of the gear transmission train 38 (FIG. 4). engage with.
After it is confirmed by the switch 52 that the rotary table 28 is "released", that is, "advanced", the first
The switching valve 56 (FIG. 6) is operated to displace upward from the neutral position, and the fluid is transferred to the second rear portion 44f.
supplied to This causes the actuating tube 36 to move forward.
The robot moves forward by SF, and the rotary table 28 rotates 45 degrees. After confirming this state with the switch 47f (FIG. 2), the third switching valve 58 is operated to move downward as shown in FIG. Due to the engagement, the rotary table 28 is fixed at a position indexed and rotated by 45 degrees. This condition is confirmed by switch 52. In this way, the 45 degree indexing is completed, but at that time the first switching valve 56 is returned to the neutral position, and thereby the actuating pipe 36 and the fluid motor 4 are
2 returns to the initial state shown in FIG. 5a.

Instead of doing as described above, the first switching valve 56 is actuated to switch the main piston 45 from the main piston 45 while the rotary table 28 is fixed and the A-axis gear 40 and the final gear 41 of the gear transmission train 38 are not engaged. The actuating pipe 36 is advanced by the distance SF, the rotary table is then released so that the gears 40 and 41 are engaged, and the first switching valve 56 is then returned to the neutral position, so that the main piston 45 is activated. The tube 36 is moved back by a distance SF. At this time, since the gears 40 and 41 are engaged, the rotary table 28 is rotated 45 degrees in the opposite direction to that described above. In this way, a 45 degree indexed rotation in the opposite direction can also be achieved.

If the fluid is supplied to the first rear section 44e instead of the second rear section 44f in exactly the same manner as the 45 degree index rotation described above, the 5 degree index rotation and the reverse direction can be achieved. A 5 degree indexed rotation can be achieved.

As a variation of the embodiment described above, the rotary table 28
Therefore, the rotation of the A-axis 31, instead of being accomplished by the actuating tube 36, may be accomplished similarly to the rotation of the B-axis 15 by a suitable A-axis indexing motor (not shown). In this case, since the A-axis indexing motor must be attached to, for example, the L-shaped bracket 24 and rotating together with it, the wiring to the A-axis indexing motor does not have to be twisted, unlike the case with rotary connectors. A means is necessary.

Referring again to FIG. 1, the X-axis slide 10 can slide on its side in the vertical direction (X) along a vertical plane 60 parallel to the first horizontal axis Y of the vertical bed 59 (as indicated by the arrow ). Said sliding guidance is achieved by two X-direction guides 61 and 62 provided in the vertical plane 60 and extending in the vertical direction (X). To accomplish this sliding, an X-axis servo motor 6 is installed above the vertical bed 59.
3 is fixedly mounted, and the X-axis slide 10 engages a vertical ball screw 64 similar to the ball screw 13 shown in FIG. (without) in the vertical direction (X) by the X-axis servo motor 63.

A spindle 66 shown in FIG. 1 and capable of supporting a tool 65 at its front end portion is supported by a headstock 67 and extends in the direction of a second horizontal axis Z perpendicular to the first horizontal axis Y. The main shaft 66 can be rotated about a second horizontal axis Z by a main shaft drive motor 68 attached to a head stock 67 via a suitable transmission mechanism (not shown).

The above-mentioned vertical bed 59 is connected to the above-mentioned vertical surface 60.
Adjacent to is a second vertical surface 69 parallel to the second horizontal axis Z, Z-direction guides 70 and 71 are provided extending in the second axis direction (Z). The headstock 67 is supported by these Z-direction guides 70 and 71 and guided so that it can slide horizontally in the second axis direction (Z) along the vertical plane 69 (arrow Z).

Sliding or movement of the headstock 67 in the second axis direction (Z) is caused by a ball screw (not shown) extending in the second axis direction (Z) and a ball screw nut portion of this headstock (also (not shown) by operating the Z-axis servo motor 72. The details are omitted.

In FIG. 1, reference numeral 73 indicates a tool 65 and a tool magazine (not shown) attached to the main shaft 66.
A tool changer is shown for exchanging tools stored in the machine, which has a tool changer arm 74 for exchanging the position of the tools. The illustrated horizontal axis machining center generally further includes an operator panel and an NC device (neither shown), respectively, to achieve overall operation and numerical control of the machining center.

According to this invention, as described above, it is not only possible to achieve indexing of 72 planes at intervals of, for example, 5 degrees around the axis of the B-axis 15, but also by 5 degrees, for example, around the axis of the A-axis 31 that is orthogonal to the B-axis 15. Since 72-plane indexing can be achieved quickly, complex workpieces with machining locations in multiple directions can be machined with just one installation. Therefore, so-called five-sided processing is possible. To explain this with reference to FIGS. 7 and 8 for a very simple cubic-shaped workpiece, the four sides of the workpiece W can be moved without rotating the B-axis 15 as shown in FIG. Rotating the rotary table 28 in 90 degree increments around the axis of the A-axis 31 (90 degree indexing is 45
(This can be achieved by performing degree indexing twice)
This can be achieved by sequentially indexing and rotating.
As shown in FIG. 8, by rotating the B-axis 15 through 90 degrees, the rotary table 28 can be rotated through 90 degrees around the axis of the B-axis, thereby making it possible to process the upper side of the workpiece. In accordance with the invention, there is further provided a carbyk coupling 2 for indexing positioning or fixing.
Since 0, 21 and 32, 33 are adopted, the positional accuracy is high and the rigidity is also large. In particular, strong clamping and holding is achieved by the fluid, especially pressure oil, when the carbyk coupling is engaged, so that strong cutting can be achieved.

[Brief explanation of the drawing]

1 is a schematic perspective view of a horizontal machining center which is an example of a machine tool equipped with a multi-axis indexing device according to the present invention, and FIG. 2 is a schematic perspective view of a horizontal machining center shown in FIG.
A vertical sectional view showing the internal structure of the center X-axis slide, FIG. 3 is an enlarged plan view showing a front end portion of the X-axis slide in FIG. 2 with a partial cross section, and FIG. 5 is a diagram showing each operating stage of the rotary table indexing rotation fluid motor provided inside the X-axis slide of FIG. 3, and FIG. 6 is a cross-sectional view taken along the line, and FIG. FIGS. 7 and 8 are diagrams showing a fluid circuit according to the present invention, and are illustrative views showing a state in which five-sided machining is performed using the multi-axis indexing device according to the present invention. In the drawings, 11 is a Y-axis main body which is an example of a support for the main indexing shaft, 15 is a B-axis which is the main indexing shaft,
16 and 17 are cylinder chambers and pistons that displace the main indexing shaft, 20 and 21 are first carby couplings, 22 is a motor that rotates the main indexing shaft, and 24 is a member fixed to the main indexing shaft. is L
type bracket, 28 is a rotary table, 32 and 33
34 and 35 are cylinder chambers and pistons that displace the rotary table, and 36 and 42 are operating tubes and fluid motors that rotate the rotary table.

Claims (1)

[Claims] 1 The main indexing shaft is attached to the support so that it can be displaced in the axial direction and indexed and rotated about the axis, and the main indexing shaft is mounted on one side in the axial direction between the main indexing shaft and the support. When the main indexing shaft is displaced in the other direction, it becomes an engaged state and fixes the main indexing shaft to the support, and when the main indexing shaft is displaced in the other direction in the axial direction, it enters a disengaged state and fixes the main indexing shaft to the support. On the other hand, a first curvature coupling that releases the main indexing shaft so that it can be indexed and rotated is provided, and a mechanism that indexes and rotates the main indexing shaft is provided at the rear part of the support, and a mechanism that allows the main indexing shaft to be rotated in the axial direction. A bracket is fixed to the front part of the main indexing shaft, and a rotary table capable of supporting the workpiece is attached to the bracket in the direction of a second axis that makes an angle with the axis. It is mounted so that it can be displaced and indexed and rotated about the second axis, and is placed between the rotary table and the bracket so that when the rotary table is displaced in one direction in the direction of the second axis, the rotary table becomes engaged and rotates against the bracket. a second curvature which fixes the rotary table by holding the rotary table, and which becomes disengaged when the rotary table is displaced in the other direction in the direction of the second axis, thereby releasing the rotary table so that the rotary table can be indexed and rotated with respect to the bracket; A coupling is provided, and an actuating tube coaxial with the main indexing shaft is installed so that it can be displaced in the axial direction, and a coupling is installed in the bracket to adjust the axial displacement of the actuating tube to the indexing rotation of the rotary table. A mechanism for displacing the actuating tube in the axial direction is provided in the rear portion of the main indexing shaft, and a fluid-operated mechanism for displacing the rotary table in the direction of the second axis is provided in the bracket. A multi-spindle splitter for a machine tool, characterized in that a fluid path is provided in the actuating tube and the bracket, and extends from the rear portion of the actuating tube through the actuating tube and the bracket to the fluid actuation mechanism. Output device.