JPH02180538A - Multiple shaft turret head - Google Patents

Abstract

PURPOSE:To perform the dividing of a rotating cutting tool post and the rotation of a tool by one driving motor and to fit plural kinds of tools to one dividing face by performing the connection and disconnection of a 1st main shaft and 1st driven shaft, those of a 2nd main shaft and 2nd driven shaft and further those of each clutch. CONSTITUTION:The dividing of a rotating cutting tool post 12 is performed by cutting 1st and 2nd clutches 104, 113, connecting a 3rd clutch 122 only, transmitting the rotation of a driving motor 48 to a dividing shaft 80 via a 3rd intermediate shaft 117 and rotating a cam mechanism 87. Then, a 1st driven shaft 57 is connected to a1st main shaft 30, only the 1st clutch 104 is connected and the rotation of the motor 48 is transmitted to the 1st main shaft 30 via a 1st intermediate shaft 99 and 1st driven shaft 57. Also, a 2nd driven shaft 64 is connected to a 2nd main shaft 37, only 2nd clutch 113 is connected and the rotation of the motor 48 is transmitted to the 2nd main shaft 37 via 2nd intermediate shaft 108 and 2nd driven shaft 64. Thus, the 1st and 2nd main shafts can independently be driven and to plural kinds of tools can be fitted to one dividing surface.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention includes a rotary tool rest, a plurality of tools are mounted on the pupil rotary tool rest in process order, and processing is performed while indexing the rotary tool rest. This is applied to a multi-axis turret head that allows multiple processes to be performed in one machine.

[Conventional technology]

There is a processing machine equipped with a turret head that uses a single machine to process a workpiece that requires several steps.

The above-mentioned processing machine has a rotary tool rest on the turret head, and a predetermined tool is attached to each of the plurality of indexing surfaces of the rotary tool rest. - Each time a process is completed, the rotary blade anastomosis is rotated, and the next tool is moved to the processing position. Processing is performed by placing the

There are two types of turret heads: a single-shaft type in which one tool is mounted on each indexing surface of the rotary tool rest, and a multi-shaft type in which a plurality of tools are mounted.

[Problem to be solved by the invention]

Conventional turret heads are used for indexing the rotary tool post and for tools (
Since the rotation of the main shaft (main shaft) is performed by separate drive systems, a dedicated drive motor is required for each. Furthermore, since the drive system for the main shaft is one system, only one type of tool can be attached to one indexing surface of the rotary tool post even in a multi-spindle type. That is, it is not possible to attach a drill and a tap or a reamer and a tap to one indexing surface, and only the drill can be attached to a drill, and only the tap can be attached to a tap. Therefore, when drilling and threading a workpiece, two types of processing machines are required.

Another method is to increase the size of the rotary tool rest and form more tool mounting surfaces, but this poses a problem in that the turret head becomes abnormally large.

This invention allows a single drive motor to index a rotary tool post and rotate a tool, and moreover, it is possible to perform two drive systems for the tool.
The present invention aims to provide a compact multi-axis turret head that is systemically configured so that a plurality of types of tools can be mounted on one indexing surface.

[Means to solve the problem]

The multi-axis turret head in this invention includes a housing,
A rotary spindle fixed to the housing, a rotary tool rest rotatably attached to the rotary spindle, a hollow first spindle rotatably attached to each indexing surface of the rotary tool rest, and a rotary spindle inside the first spindle. A second spindle that is freely attached, a hollow first driven shaft that is rotatably attached within the housing and whose tip is selectively joined to the first spindle at the processing position, and a hollow first driven shaft that is rotatably attached within the first driven shaft. a second driven shaft whose tip is selectively engaged with the second main shaft, an indexing shaft rotatably attached to the housing, and a cylinder rotated by the indexing shaft to rotate the rotary tool rest by a predetermined angle. a cam, a drive motor attached to the rear end of the housing, an input gear rotated by the drive motor, a first intermediate shaft that transmits the rotation of the human-powered gear to the first driven shaft, and a second intermediate shaft that transmits the rotation of the input gear to the second driven shaft. a second intermediate shaft that transmits the rotation of the input gear to the driven shaft, a third intermediate shaft that transmits the rotation of the input gear to the indexing shaft, a first clutch that is provided on the first intermediate shaft that connects and disconnects power, and a second intermediate shaft that transmits rotation of the input gear to the index shaft.
a second clutch provided on the intermediate shaft for connecting and disconnecting power;
It consists of a third clutch that is provided on the third intermediate shaft and connects and disconnects power.

[Effect]

When indexing the rotary tool post, the multi-axis turret head with the above structure disengages the first and second clutches, engages the third clutch,
The rotation of the drive motor is transmitted from the input shaft to the indexing shaft via the third intermediate shaft, and the cam mechanism is rotated to rotate the rotary tool rest by a predetermined angle to perform indexing.The first main shaft is rotated in the zero order. To do this, connect the first driven shaft to the first main shaft, and connect the second driven shaft to the first main shaft.
The third clutch is disengaged, the first clutch is engaged, and the rotation of the drive motor is transmitted to the first main shaft via the input shaft, the first intermediate shaft, and the first driven shaft, and the first main shaft is rotated. When rotating the second main shaft, connect the second driven shaft to the second main shaft,
The first and third clutches are disengaged, the second clutch is engaged, and the rotation of the drive motor is transmitted to the second main shaft via the input shaft, second intermediate shaft, and second driven shaft, and the second main shaft is rotated.

As mentioned above, by connecting/disconnecting the first main shaft and first driven shaft, connecting/disconnecting the second main shaft and second driven shaft, and further connecting/disconnecting each clutch, - drive motors are used to rotate the indexing shaft or the second driven shaft. 1 spindle 5. The second main axis can be selected and rotated. In addition, by rotating the drive motor in forward and reverse directions, the index shaft or the first
The main shaft and the second main shaft can also be rotated in forward and reverse directions.

〔Example〕

Embodiments of the present invention will be described below with reference to FIGS. 1 to 7.

In Figures 1 and 2, (1) is a housing whose front surface is tapered downward from the front, and a front wall (2) and a rear wall (3) are integrally formed at the front and rear of the center. It is.

(4) is a rotating support shaft, which is a stepped round shaft whose rear end fits into a support wall (5) formed on the housing (1), and supports a mounting flange (6) integrally molded at the rear. It is fixed with bolts (not shown) in contact with the top surface of the wall (5),
The zero-rotation support shaft (4), which is orthogonal to the taper on the front surface of the housing (1), has first and second annular oil grooves (7) ( 8) form;
Also, the first and second oil grooves (7) (
(9) (i
o) is formed. Also, the large diameter shaft part of the rotation support shaft (4) (
An annular air relief groove (11) is formed on the outer circumferential surface of 4b).

(12) is a rotary tool rest, for example, in the shape of a truncated cone, with flat indexing surfaces (13) uniformly formed at five locations on the outer peripheral surface, and a stepped cylindrical hole (14) formed in the center. . This rotary tool rest (12) has a cylindrical hole (14) loosely inserted into the rotary support shaft (4), and is rotatable by two needle roller bearings (15) and (16), and can also move in the axial direction. It's like that.
Furthermore, the rotary tool rest (12) is formed with an air passage (17) for supplying air toward the air relief groove (11) of the rotary support shaft (4). Air is supplied to the air passage (17) during indexing, and when the outlet of the air passage (17) is blocked by the outer peripheral surface of the rotation support shaft (4) and the air pressure is high, the rotary tool rest (12) detects that the air passage (17) is floating and rotating, and the air passage (17) is connected to the air relief groove (11).
) and the air pressure decreases, the rotary tool rest (12
) has landed on the floor and indexing has been completed.

(18) is a cylinder provided between the small diameter shaft part (4a) of the rotation support shaft (4) and the cylindrical hole (14) of the rotary tool rest (12). 4a). (19) is a piston provided between the cylinder (18) and the small diameter shaft part (4a) of the rotation support shaft (4), which is keyed to the small diameter shaft part (4a) so that it cannot rotate;
Further, movement in the axial direction is prevented by a nut (20) screwed onto the small diameter shaft part (4a). Also cylinder (18
) and the piston (19) are provided with a knock pin (21), which allows relative movement in the axial direction, but does not allow rotation. The cylinder (18) has a piston front chamber (1
8a) is the oil passage (22) bored in the piston (19).
The piston back chamber (18b) communicates with the first oil groove (7) of the rotation support shaft (4) through the piston, and the piston back chamber (18b) communicates with the second oil groove (8). (23) is the cylinder holder, and the rotary tool rest (12)
' and is bolted to the cylinder (18) via a thrust rolling bearing (24) and a radial rolling bearing (25).
is supported. When oil is supplied to the piston front chamber (18a), the cylinder (18) moves relatively forward and lifts the rotary tool rest (12) via the cylinder holder (23). Conversely, when oil is supplied to the piston back chamber (18b), the cylinder (18) relatively retreats and pushes down the rotary tool rest (12). (26) is a gear type coupling provided between the housing (1) and the rotary tool rest (12).A ring-shaped fixed gear (27) is attached to the front of the housing (1). ) are provided with positioning blocks (2B) that mesh with the fixed gear (27) at several locations on the bottom surface. When the rotary tool rest (12) is lifted, the positioning block (28) is disengaged from the fixed gear (27) and the rotary tool rest (12) is removed from the coupling (26).
12) is pushed down, the positioning block (28) meshes with the fixed gear (27) to prevent rotation of the rotary tool post (12). (29) is a guide ring attached and fixed to the bottom peripheral surface of the rotary tool rest (12), and the lower side is fitted onto the front peripheral surface of the housing (1), and the rotary tool rest (12)
To guide a rotary tool rest (12) so that it does not wobble when moving back and forth and rotating.

(30) is the first main shaft attached to the center of the indexing surface (-13) of the rotary tool rest (12), and is formed in a hollow cylindrical shape.
Joint claws (31) and (32) are formed on the front and rear end surfaces thereof. This first spindle (30) is housed in a bearing case (33) fixed to the rotary tool rest (12), and is supported by 2NIi composite rolling bearings (34) (35) that apply radial load and thrust load. It is rotatably supported by a radial rolling bearing (36). (37)
is a second main shaft disposed within the first main shaft (30), and male splines (38) (39) are formed at the front and rear ends;
It is rotatably supported by two sets of composite type rolling bearings (40) (41) and a radial rolling bearing (42) that carry a radial load and a thrust load. The first spindle (30) and the second spindle (37) are connected to the rotary tool rest (1
2), one set is provided on each indexing surface (13).

Two sets of power transmission gears (44) and (45) in the machining head (43) attached to each indexing surface are connected to the first main shaft (30) and the second main shaft (37), respectively, and the joint claws (46) and They are connected via female splines (47). One power transmission gear (44) drives a drill (or reamer) provided in the processing head (43), and the other power transmission gear (45) drives a tap.

(48) is a drive motor that can be rotated in forward and reverse directions attached to the housing (1), and its output shaft (49) is attached to the housing (1).
A drive gear (50) is provided on this output shaft (49). The drive gear (50) is rotatably supported by two sets of radial rolling bearings (51) built into the housing (1).

(52) is an input gear, which has two sets of meshing teeth (53) and (54) with different diameters formed on its circumferential surface, and a support cylinder part (56) formed in the housing (1) via a radial rolling bearing (55). ) is rotatably mounted. The large diameter side meshing teeth (53) of this input gear (52) are the drive gear (50).
It meshes with the.

(57) is the first driven shaft provided in the housing (1),
It is formed into a hollow cylindrical shape, and has a joint pawl (58) on its tip surface that joins with the rear joint pawl (32) of the first main shaft (30), and a first driven gear (59) on its rear end. ) are combined into one. This first driven shaft (57) is supported in the slide tube (60) so as to be rotatable and immovable in the axial direction by two sets of compound rolling bearings (61) and (62) that receive radial loads and thrust loads. It is. The slide tube (60
) is provided on a support wall (not shown) of the housing (1) so as to be slidable in the axial direction, and has a connecting arm (63) formed below.

(64) is a second driven shaft provided within the first driven shaft (57), and the tip surface has a spline (39) at the rear end of the second main shaft (37).
), and a male spline (66) is formed in the middle. A second driven gear (67) is spline-fitted to a spline (66) in the middle of the second driven shaft (64) so that the second driven gear (67) rotates together while allowing relative movement in the axial direction. The tip of the second driven gear (67) is connected to the first driven shaft (57).
) and is rotatably supported by a needle roller bearing (68) provided in the first driven shaft (57), and the second driven gear (67) is inserted into the front wall (2) of the housing (1). ) is rotatably supported via two sets of tapered roller bearings (69, 70) fixed to the bearings (69, 70).

(71) is a first slide shaft that moves the first driven shaft (57) back and forth, and is supported by the rear wall (3) of the housing (1) so as to be able to move back and forth. wall (2
) is passed through and connected to the connecting arm (63) of the slide cylinder (60), the rear part faces into the opening window (72) of the housing (1), and the first slide cylinder (73) is attached to the Haulenge (1). ). Therefore, when the first slide cylinder (73) extends, the first slide shaft (71) moves forward, which causes the slide cylinder (60) and the first driven shaft ( 57) also moves forward and connects the joint claw (58) of the first driven shaft (57) to the first main shaft (30).
It is joined to the rear joint claw (32) of.

(75) is a second slide shaft that moves the second driven shaft (64) back and forth, and is inserted into the support tube (56) so as to be able to move back and forth;
The front part is loosely fitted to the rear end of the second driven shaft (64), and the double row thrust roller bearing (76) is interposed between the two to allow relative rotation, and the rear part is connected to the opening of the housing (1). window(
77) and is connected to the piston rod (79) of the second slide cylinder (78) attached to the housing (1). Therefore, when the second slide cylinder (78) extends, the second slide shaft (75) moves forward, which causes the second driven shaft (64) to move forward as well.
) is fitted into the male spline (39) of the second main shaft (37).

(80) are the side walls (81) (82) of the housing (1).
), and one end is inserted into the bearing case (83) formed on one side wall (81), as shown in FIG. It is rotatably supported by a set of tapered roller bearings (84) and (85), and the other end is passed through the other side wall (82).
) is rotatably supported by a double row radial ball bearing (86) incorporated in the radial ball bearing (86). A cylindrical cam (8) is attached to the indexing shaft (80).
7) and the worm wheel (88) are integrally connected. A spiral groove (89) is provided on the outer peripheral surface of the cylindrical cam (87).
This spiral groove (89) has a rotary tool rest (
A cam follower (90) attached to the bottom side of each indexing surface (13) of 12) is adapted to enter therein. The spiral groove (89) has a pitch that allows the cam follower (90) to move a predetermined angle, for example, 721 degrees, during one rotation of the cylindrical cam (87), and has a pitch that is small (one cam follower (90) reliably moves the helical groove (89) ), and on the outer surface of one side wall (81) is a rotating large-diameter indexing disk (92) with meshing teeth (91) formed on the circumferential surface. The indexing disc (92) is attached to a small diameter indexing gear (93) attached to the protruding end (80a) of the indexing shaft (80). ) and the indexing gear (93) have teeth in a ratio of 5:1, and when the indexing gear (93) rotates once, the indexing gear (93) rotates once.
92) rotates four times. Then, the rotary tool rest (12
) in correspondence with each indexing surface (13) of the dog (94).
(94)... is provided, and the dog (94) selects and presses a plurality of limit switches (95), (96), and (97) installed below the indexing board (92). For example, the dog (94
) are those that press the first limit switch (95), those that press the second limit switch (96), those that press the third limit switch (97), and those that press the first and second limit switches (95) and (96). Five types of tools are used: one that presses the second and third limit switches (96) and (97), and one that presses the second and third limit switches (96) and (97).
When one indexing surface (13) of 2) comes to the processing position, the corresponding dog (94) selects the predetermined first, second and third limit switches (95), (96) and (97). Press and detect this. Also indexing shaft (80)
An absolute encoder (98) is attached to the other end to detect the rotation angle of the indexing shaft (80) and select the shortest indexing direction and angle.

(99) is a first intermediate shaft for transmitting the rotation from the drive motor (48) to the first driven shaft (57), and as shown in FIG. 4, the front wall (2) of the housing (1) and rear wall (3)
A bearing case (100) (100) (100) (101) installed in the front wall (2) and rear wall (3) is installed in the bearing case (2) and rotatably supported by the radial rolling bearings (100) (101) installed in the front wall (2) and the rear wall (3), with the rear end fixed to the housing (1). 102) and insert it into the bearing case (102).
) is rotatably supported by a radial rolling bearing (103) incorporated in the radial roller bearing (103). This first intermediate shaft (99) has a first power connecting/disconnecting shaft between the rear wall (3) and the housing (1).
A clutch, for example, a first electromagnetic clutch (104) is provided, and a first intermediate gear (105) that is adjacent to the first electromagnetic clutch (104) and meshes with the small diameter side meshing teeth (54) of the input gear (52) is provided. It is rotatably mounted via a double row radial ball bearing (106), and the first intermediate gear (105) is connected to the first electromagnetic clutch (104). Also, the first intermediate shaft (9
A second intermediate gear (107) that meshes with the first driven gear (59) is coupled to the tip of the gear 9). This second intermediate gear (1
07) is installed at a position where it fully meshes with the advanced first driven gear (59). The first electromagnetic clutch (1
04) is turned on, the first intermediate shaft (99) and the first intermediate gear (105) are integrated, the first intermediate shaft (99) rotates, and the first intermediate gear (107) rotates. Driven gear (5
9) and the first electromagnetic clutch (104) is turned off, the first intermediate gear (105) rotates freely.

(10B) is a second intermediate shaft for transmitting the rotation from the drive motor (48) to the second driven shaft (64), and as shown in FIG. 5, the front wall (2) of the housing (1) and rear wall (3
), which is rotatably supported by radial rolling bearings (109) and (110) built into the front wall (2) and rear wall (3), and whose rear end is fixed to the housing (1). (111) and insert it into the bearing case (11
It is rotatably supported by a radial rolling bearing (112) incorporated in 1). This second intermediate shaft (108) is provided with a second clutch for power connection/disconnection, for example, a second electromagnetic clutch (113), between the rear wall (3) and the housing (1). A third intermediate gear (114) that meshes with the small-diameter side meshing teeth (54) of the input gear (52) is rotatably mounted adjacent to the input gear (52) via a double row radial ball bearing (115). (114) is connected to the second electromagnetic clutch (113). Also, the second intermediate shaft (1
A fourth intermediate gear (116) that meshes with the second driven gear (67) is coupled to the tip of the gear 08). When the second electromagnetic clutch (113) is turned on, the second intermediate shaft (108) and the third intermediate gear (114) are integrated, and the second intermediate shaft (
108) rotates, rotation is transmitted from the fourth intermediate gear (116) to the second driven gear (67), and the second electromagnetic clutch (
113) is turned off, the third intermediate gear (114) rotates freely.

(117) is a third intermediate shaft for transmitting the rotation from the drive motor (48) to the indexing shaft (80), which is disposed below the worm wheel (88), and as shown in FIG. The front wall (2) and the rear wall (
3), rotatably supported by radial rolling bearings (11B) (119) incorporated in the front wall (2) and rear wall (3), and further fixed at the rear end to the housing (1). Insert the bearing case (120) into the bearing case (120).
Two sets of tapered roller bearings (121) installed in (1)
21) so as to be rotatably supported. A third clutch for power connection/disconnection, for example, a third electromagnetic clutch (1
22), and a double row radial ball bearing (124) is provided adjacent to the third electromagnetic clutch (122), and a fifth intermediate gear (123) that meshes with the large diameter side meshing teeth (53) of the input gear (52) is provided.
), and the fifth intermediate gear (123)
is connected to the third electromagnetic clutch (122). Further, a worm (125) is integrally formed between the front wall (2) and the rear wall (3) of the third intermediate shaft (117), and the worm (125) is connected to the worm wheel (88). It's a combination. When the third electromagnetic clutch (122) is turned on, the third intermediate shaft (117) and the fifth intermediate gear (123) are integrated, the third intermediate shaft (117) rotates, and the worm (125) Rotation is transmitted from the worm wheel (88) to the worm wheel (88), and when the third electromagnetic clutch (122) is turned off, the fifth intermediate gear (123) freely rotates.

The multi-axis turret head uses a servo motor as the drive motor (48), and as shown in FIG. 7, the speed of the drive motor (48) and the position of the index axis (80) are fed back, Sequence control is performed by a circuit (126) and a servo motor control circuit (127).

The multi-axis turret head is placed on the saddle (128) of the processing machine, and is fed by an appropriate feeding means. Also, each indexing surface (13) of the rotary tool rest (12) (13)
A processing head (43) equipped with a drill (or hammer) (129) and a tap (130) is attached to..., respectively.
The power transmission gear (44) of the drill drive system in the processing head (43) is connected to the first main shaft (
30) and the power transmission gear of the tap drive system (
45) is joined to the second main shaft (37).

During processing, the first slide cylinder (73) and the second slide cylinder (78) are shortened in accordance with the commands from the sequence circuit (126), and the first, second, and third electromagnetic clutches (104) (113) are shortened. (122) OFF
state, rotate the drive motor (48) in a predetermined direction, rotate the input gear (52) with the drive gear (50),
The first intermediate gear (105) meshes with the input gear (52).
), the third intermediate gear (114), and the fifth intermediate gear (123)
) to rotate freely.

Next, pressure oil is supplied to the first port (9) formed on the rotation support shaft (4), and then the first oil groove (7) and the piston (19)
Pressure oil is supplied to the piston front chamber (18a) of the cylinder (18) through the oil passage (22) of the cylinder (
18), the rotary tool rest (12) is lifted from the housing (1) via the cylinder holder (23), and the positioning block (2) attached to the rotary tool rest (12) is moved forward.
8) and the fixed gear (27) attached to the housing (1), and the rotary tool rest (12) is freed. When the zero-rotation tool rest (12) floats, the air passage (17) is closed. , the air pressure in the air passage (17) increases and is automatically detected.

Next, the third electromagnetic clutch (122) is ONL, the rotation is transmitted from the fifth intermediate gear (123) to the third intermediate shaft (117), and the index shaft ( 80) and the cylindrical cam (87), the cam follower (90) connected to the spiral groove (89) formed in the cylindrical cam (87) is guided and moved to rotationally support the rotary tool rest (12). Indexing is performed by rotating around the shaft (4), and a predetermined processing head (43) is placed at the processing position.Every time the indexing shaft (80) rotates, - processing heads (43) are placed at a processing position. A dog (94) provided on an indexing disk (92) that is fed into the processing position and rotates in synchronization with the indexing shaft (80) is connected to the first, second, and third limit switches (
95) (96) The indexed processing head is detected by pressing any of (97), and the servo motor control circuit (
127), and the third electromagnetic clutch (122) is set to 0F.
When the zero indexing for free rotation of FL and the fifth intermediate gear (123) is completed, pressure oil is supplied to the second bow (10) formed on the rotation support shaft (4), and this is passed through the second oil groove ( 8) to the piston back chamber (18b) of the cylinder (18), thereby relatively retracting the cylinder (18) and placing the rotary tool rest (12) on the floor.
The positioning block (28) attached to 2) meshes with the fixed gear (27) attached to the housing (1) to fix the rotary tool post (12). When the zero-rotation tool post (12) is fixed, the air The passageway (17) communicates with the air relief groove (11) and the air pressure is lowered and automatically detected.

Next, the drive motor (48) is rotated at a slow speed, the first electromagnetic clutch (104) is turned on, and the first slide cylinder (73) is extended. Then, the first intermediate gear (
105), the first intermediate shaft (99) rotates together with the second intermediate gear (107) and the first driven gear (59) to rotate the first driven shaft (57) at a very low speed, and the first slide The first driven shaft (
57) is advanced to connect the joint wind (58) at the tip of the first driven shaft (57) to the joint wind (32) at the rear end of the first main shaft (30) waiting in front, Rotation is transmitted from the first driven shaft (57) to the first main shaft (30) and the power transmission gear (44) to rotate the drill (129). First driven shaft (5
7) and the first main shaft (30) are completely connected and the first slide cylinder (73) has completed extension. When this is detected, the drive motor (48) is rotated at high speed to rotate the drill (12).
9) Rotate at high speed. After this, the multi-axis turret head is advanced to drill holes in the workpiece.

Once the hole drilling is completed, the multi-axis turret head is moved back and
The first electromagnetic clutch (104) is set to 0FFL.

to freely rotate the first intermediate gear (105), and
The slide cylinder (73) is shortened to move the first driven shaft (57) backward, and the first driven shaft (57) is moved toward the first main shaft (
30).

Next, the drive motor (48) is rotated again at a slow speed, the second electromagnetic clutch (113) is turned on, and the second slide cylinder (78) is extended. Then, the second intermediate shaft (108) rotates together with the third intermediate gear (114), causing the second driven shaft (64) to move at a very low speed via the fourth intermediate gear (116) and the second driven gear (67). rotating and advancing the second driven shaft (64) via the second slide shaft (75);
The female spline (65) at the tip of the second driven shaft (64) is fitted into the male spline (39) at the rear end of the second main shaft (37), and the second driven shaft (64) is connected to the second main shaft ( 37) and the power transmission gear (45), and the tap (i30
). The second driven shaft (64) and the second main shaft (37
) are fully fitted and the second slide cylinder (78)
has completed its extension and detects this, the drive motor (48
) is rotated at low speed, and the tap (130) is rotated at low speed. After this, the multi-axis turret head is advanced to make a tap in the workpiece.

When tapping is completed, the drive motor (4th) is reversely rotated at low speed and the multi-axis turret head is moved backward to remove the tap (130) from the workpiece. When it reaches the rear end, the second electromagnetic clutch ( 113) and turn off the third intermediate gear (
114) to rotate freely, and at the same time, the second slide cylinder (78) is shortened, and the second driven shaft (64) is moved to the second position.
Separate from the main shaft (37).

When machining by one machining head is completed, the above operation is repeated to supply pressure oil to the first port (9) of the rotary support shaft (4) to float the rotary tool rest (12), and then the third electromagnetic clutch (122) to index the rotary tool rest (12), place the next machining head (43) in the machining position, and after placing it, transfer it to the second port (10) of the rotary spindle (4). Pressure oil is supplied to place and fix the rotary tool rest (12) on the housing (1).

After this, processing is performed by sequentially rotating the first main spindle (30) and the second main spindle (37).

The above operations are repeated to perform predetermined machining on the workpiece.

When indexing the rotary tool post (12), the multi-axis turret head uses a drive motor (48 ) is turned forward or reversed.

Further, the first main shaft (30) and the second main shaft (37) may be rotated alternately and independently depending on the type of tool, or may be rotated simultaneously.

〔Effect of the invention〕

The multi-axis turret head of this invention incorporates three drive systems: two types of main shaft drive systems and a rotary tool post drive system.
Moreover, each drive system can be driven by one drive motor, and the first main shaft and the second main shaft can be driven alternately and independently, or both can be driven simultaneously. Therefore, it is now possible to incorporate a drill and reamer top tap into one processing head, which was previously impossible, which greatly improves work efficiency, requires only one machine, and reduces equipment costs. .

・Furthermore, only one drive motor is required, and the parts that make up the drive system for the two types of main shafts are also arranged concentrically, so the entire head can be made compact and the area occupied can be reduced.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of a multi-axis turret head according to the present invention, Fig. 2 is a sectional view taken along the line ■-■ in Fig. 1, Fig. 3 is a sectional view centered on the indexing shaft, and Fig. 4 is a sectional view of the Figure 5 is a cross-sectional view centered on the intermediate shaft, Figure 5 is a cross-sectional view centered on the second intermediate axis, Figure 6 is a cross-sectional view centered on the third intermediate axis, Figure 7 is the control system of the multi-axis turret head. It is a schematic diagram including. (1)--Housing, (4)--Rotation shaft, (12
)--Rotary turret, (13)-- Indexing surface, (3
0) - first main shaft, (48) - drive motor, (57) - first driven shaft, (80) - indexing axis, (99) - first intermediate shaft, (117) - third Intermediate shaft, (113)---・Second electromagnetic clamp (122)---・Third electromagnetic clamp

Claims (1)

[Claims] (1) a housing, a rotational spindle fixed to the housing, a rotary tool rest rotatably attached to the rotational spindle, and a hollow first main shaft rotatably attached to each indexing surface of the rotary toolrest; a second main shaft rotatably mounted in the first main shaft, a hollow first driven shaft rotatably mounted in the housing and whose tip is selectively joined to the first main shaft in the processing position;
a second driven shaft rotatably mounted within the driven shaft and whose tip selectively engages the second main shaft; an indexing shaft rotatably mounted in the housing; a cylindrical cam that rotates the base by a predetermined angle; a drive motor attached to the rear end of the housing; an input gear rotated by the drive motor; a first intermediate shaft that transmits rotation of the input gear to a first driven shaft; a second intermediate shaft that transmits the rotation of the input gear to the second driven shaft; a third intermediate shaft that transmits the rotation of the input gear to the indexing shaft; and a third intermediate shaft that is provided on the first intermediate shaft and connects and disconnects power. A multi-shaft turret head comprising a first clutch, a second clutch provided on a second intermediate shaft to connect and disconnect power, and a third clutch provided on a third intermediate shaft to connect and disconnect power.