JPH0430933A - Nc special purpose machine having multi spindle head exchange type turret head - Google Patents

Abstract

PURPOSE:To save a space with the whole machine arranged in compact, small size, and light weight by making movable positioning in order and also continuously conducting processing with a four-side turret heat and a multi spindle head stocker in each device in which works are arranged in a nearly straight line. CONSTITUTION:Works 5 are carried in an arrow A direction on a carrying conveyer 6 and positioned between work holding tools 75 and 76 of a work delivery device 4 to be held, and also a link rod 81 acts with the rotation of an arm main body 72 in an arrow B direction to change the attitude of the works 5. When the works 5 are insertedly mounted in the holding tool 69 of a holding device 3 to be held, a rotary head 67 rotates 180 deg. causing the works 5 to face to a four-side turret head 1 side to be positioned. Concurrent with this, a main body 1a is rotated with a dividing rotary mechanism and also a slide base is advanced along an arrow E direction, the main spindle of a multi spindle head 7 etc., dividedly positioned on a position where the works 5 are faced, is rotated, and thereby a given processing is made in order with four-side multi spindle heads 7, 8, 9, and 10.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an NC-dedicated machine that grips an automatically transported workpiece by a workpiece gripping device while changing its posture, and performs predetermined processing with a turret head. 4 turret heads
The present invention relates to an NC machine having a multi-axis head exchangeable turret head which is formed from a plane and one of the planes can be automatically exchanged with a multi-axis head stocker.

[Prior Art] An NC-only machine that automatically processes a workpiece using five multi-axis heads requires the following equipment.

That is, a workpiece transfer device that transfers the automatically transported workpiece to the workpiece gripping device, the workpiece gripping device configured to position the transferred workpiece at a predetermined processing position, and five multi-axis heads. It is necessary to provide at least a five-sided turret head to be mounted. Even in the prior art, it is possible that an NC-only machine equipped with each of the above-mentioned devices may exist, but none have been found.

[Problems to be Solved by the Invention] When handing over an automatically transported workpiece to a workpiece gripping device, the workpiece must be brought into a processable state. For this purpose, if the workpiece is simply gripped by the workpiece transfer device and then transferred as is to the workpiece gripping device, the workpiece is often not in a processable state. Therefore,
A device for changing the position of the workpiece is required. Further, if five multi-axis heads are required, a five-sided turret head is required as described above. However, when manufacturing a five-sided turret head, each part of the device must be divided into five parts, making processing extremely difficult.

Moreover, the problem arises that high-precision measurement becomes complicated. Furthermore, there is no space between adjacent drive mechanisms, making maintenance difficult and requiring a lot of time.

Furthermore, it is naturally large and heavy, and the mechanism for indexing and rotating the turret head is also complex and large. Furthermore, when an automatic tool opening mechanism is provided within the turret head, there is a problem in that the mechanism can only be disposed on one side of the turret head due to space limitations.

As described above, in the conventional technology, a device for changing the posture of the workpiece is required, which makes the structure of one machine complicated and expensive, and the machining time increases accordingly. The problem arises that it is large and expensive.

The present invention solves the above-mentioned problems, and is made relatively compact and small, which saves space and facilitates processing and assembly.

It is an object of the present invention to provide a dedicated NC machine having a multi-axis head exchangeable turret head that can be made with high precision and reduce the total weight of the machine.

[Means for Solving the Problems] In order to achieve the above object, the present invention mounts multi-axis heads on four mutually perpendicular surfaces, rotates them at an index of 90 degrees, and rotates one of the multi-axis heads. A four-sided turret head that is held replaceably and is slidably supported on the fixed side of the machine along the A multi-axis rad stocker configured for automatic exchange, capable of gripping a workpiece and rotating the workpiece to a position facing the four-sided turret head, and along a Y-axis direction perpendicular to the X-axis. A workpiece gripping device is slidably supported on the fixed side of the machine, and an arm-shaped member whose base end is pivotally supported on the fixed side of the machine, and the other end grips the automatically transported workpiece. An NC-dedicated machine having a multi-axis interchangeable head turret head is configured, including a workpiece transfer device that changes the posture of the workpiece while rotating around the base end portion and transfers the workpiece to the workpiece gripping device. It is something to do.

[Operation] The automatically transported workpiece is gripped by the workpiece delivery device. The workpiece delivery device rotates the workpiece toward the workpiece gripping device, and in conjunction with the rotation, the workpiece's posture is changed and the workpiece is delivered to the workpiece gripping device in a processable state. Since the workpiece gripping device is formed to be movable in the Y-axis direction and rotatable, it can be aligned with the workpiece delivery device and the four-sided turret head, and the transferred workpiece can be held on all four sides. It can be positioned to face the turret head.

The four-sided turret head consists of four planes that are orthogonal to each other.
Processing 2 Assembly is easy, but since five multi-axis heads are required, one of the four sides holds the multi-axis heads in a replaceable manner. In addition, the four-sided turret head is formed to be indexable and rotatable by 90 degrees and is also movable in the X-axis direction. It is also possible to get closer to the side. A multi-axis head is housed in the multi-axis rad stocker, which accommodates the replaceable multi-axis head of the four-sided turret head. The multi-axis stocker is automatically replaced. Each of the above devices is N
By G device.

Each is performed synchronously and the whole is arranged almost in a straight line, so it is compact and can be formed from a small size.

[Example] Hereinafter, one embodiment of the present invention will be described based on the drawings.

FIGS. 1 and 2 show the overall structure of the embodiment.

The NC dedicated machine according to the embodiment has a four-sided turret head 1,
It is composed of a multi-axis rad stocker 2, a workpiece gripping device 3, and a workpiece delivery device 4, and is further provided with a conveyor 6 that automatically transports the workpieces 5.

Each device will be explained in turn below.

First, the four-sided turret head 1 will be explained.

The main body 1a of the four-sided turret head 1 has 4 sides perpendicular to each other.
Four multi-axis heads 7.8°9.10 are connected to form a surface. Among the above multi-axis heads 7.8°9.10, the multi-axis heads 7.8.9 are fixed types, and the multi-axis heads 1
0 is held interchangeably.

A slide base 13 is supported on a bed 12 placed on a floor 11 so as to be slidable in the direction of arrow E (this direction is defined as the X-axis direction). In addition, the four-sided turret head 1 is
The main body 1a of the main body 1a is indexed and rotated by 90'' in the direction of arrow F.

FIG. 3 shows the internal structure of the four-sided turret head 1 (cross-sectional view taken along the line ■--■ in FIG. 4), and FIG. 4 shows a front view of the replaceable multi-axis head 10.

The main internal structure of the four-sided turret head 1 includes a mechanism that transmits the rotation of the drive motor 14 to the rotating shafts 15.15a (shown in FIG. 3) of each multi-axis head 7.8° 9.10;
The clamping and unclamping mechanism of the replaceable multi-axis head 10 is raised.

The rotating shaft 15 is a rotating shaft for a multi-axis head 7.8.9 fixed to the main body 1a as shown in FIG.
Reference numeral 5a indicates a rotary shaft for the replaceable multi-axis head 10, respectively.

As shown in FIG. 3, a rotating casing 16 is disposed at the center of the main body 1a and is pivotally supported at the upper and lower parts of the main body 1a. The rotating casing 16 is connected to a drive shaft 17 and is indexed and rotated by 90 degrees by a single index rotation mechanism. Note that the driving mole 14 is fixed to the top of the rotating casing 16.

A gear 20.21 is fixed to the shaft 19 connected to the motor shaft 18 of the variable motor 14, and the gear 20 meshes with a gear 23 fixed to the central shaft 22. A bevel gear 24 is formed at the lower end of the central shaft 22 . A bevel gear shaft 26, which forms a bevel gear 25 meshing with the bevel gear 24 on one end side, is arranged in a direction perpendicular to the solid shaft 22.

It is pivotally supported by the rotating casing 16 while its axial movement is restricted. In addition, there is a spline shaft 2 inside it.
A spline groove in which 7 engages is formed. One end of the spline shaft 27 is disposed at a position facing the rotating shaft 15.degree. 15a, and the tip of a swing lever 28 is connected to the tip of the spline shaft 27 via a roller. The rotating shaft 15 is pivotally supported by the main body 1 and has a spline groove 29 that meshes with the spline shaft 27.
form. Further, a gear 30 is fixed to the protruding end. The gear 30 is connected to a gear mechanism provided in the co-equipped multi-axis head 7.89, and rotationally drives each main shaft of the multi-axis head 7.8.9. Further, the gear 21 connected to the shaft 19 is connected to the gear 32 of the hydraulic pump 31 via an equivalent gear mechanism, and is used to drive the hydraulic pump 31. A clamp plate 33 for clamping or unclamping the multi-axis head 10 is slidably supported by the main body 1a, and as shown in FIG. A guide hole 35 into which the shaft 34° 34 fits is provided, and a pair of sliding members 3 are provided at the diagonal corners.
6.36 is fixed. The clamp plate 33 locks onto the jaws 37 of the multi-axis head 10, and when clamping, the jaws 37
The support seat 3 is fixed to the main body 1a by pressing it toward the main body la side.
8 and functions to press the end surface of the jaw portion 37 into contact with the jaw portion 37.

Note that the guide shaft 34 is fixed to the main body 1a. Sliding member 3
6 is slidably supported in a guide hole 39 formed in the main body 1a and also supported by a fixed shaft 40 provided at the center of the guide hole 39. A spring 41 is interposed between the fixed shaft 40 and the sliding member 36 to bias the clamp plate 33 to which the sliding member 36 is fixed in the clamping direction.

A receiving plate 43 is fixed to the center portion of the clamp plate 33 where the rotating shaft 15a is supported, and the piston 42 abuts and engages therein. The piston 42 is slidably supported by a cylinder 44 formed in the rotating casing 16, and oil passages 47 and 48 communicate with cylinder chambers 45 and 46 at the front and rear thereof. Also,
The oil passages 47 and 48 communicate with the hydraulic pump 31 via oil passages of the circuit.

As shown in FIG. 5, a cylinder 49 is fixed to the one-turn casing 16, and a reciprocating rod 51 connected to the piston rod 50 is connected to the swinging lever 28 via a lever 52 to cause the spline shaft 27 to reciprocate. In addition, the reciprocating rod 51
movement is detected by limit switches 53, 54 fixed to the upper part of the rotating casing 16.

Next, the main points of the multi-axis head stocker 2 will be briefly explained.

As shown in FIGS. 1 and 2, a slide table 57 is slidably supported on a guide rail 56 fixed on a base 55 placed on the floor 11, and a cylinder 58 It reciprocates in the direction (X-axis direction).

The multi-axis head 10a that should be automatically replaced is the slide table 5.
7 so as to be movable along the H arrow direction (Y-axis direction).

As shown in FIG. 1, it is stored and waiting either above or below the figure. In order to move the multi-axis head 10a in the direction of the arrow H, cylinders 59 are arranged in parallel in that direction and are firmly supported on the base 55 side.

There are two locking tools 61° 62 on the cylinder 59.
, and are arranged so as to be able to be respectively locked to locking tools 63 and 63a provided on the multi-axis head 10.10a.

With the above structure, when the four-sided turret head 1 moves in the direction of the arrow E and the slide table 57 moves in the direction of the arrow G, and the multi-axis head 10 to be replaced is mounted on the slide table 57 (as shown in FIG. state), the locking tool 61 locks on the locking tool 63 of the multi-axis head 10, and the locking tool 62 locks on the locking tool 63a of the stored multi-axis head 10a.
is locked, and by the operation of the cylinder 59, the multi-axis head 10,
10a moves at the same time, and the multi-axis head 10a is positioned so that it can be replaced, and is attached to the four-sided turret head 1 side.

Next, the main points of the workpiece gripping device 3 will be explained.

A ped 64 is placed on the floor 11, and a slide table 66 is supported on a slide rail 65 provided on the bed 64 so as to be slidable in the direction of arrow D (X-axis direction). On the slide table 66 is a rotary head 6 which can be indexed and rotated by 180 degrees in the direction of the arrow by means of a driving circuit.
7 is supported.

The rotary head 67 is provided with gripping tools 69 on two opposing sides for gripping the workpiece 5, and is opened and closed by a cylinder 68.

As shown in FIG. 2, the workpiece 5 held on one side of the rotating head 67 is rotated 180 degrees, and the four-sided turret head 1
positioned to face the

As the slide table 66 moves, the multi-axis head 7°8.
9. Predetermined processing is performed by to, 10a, etc.

Next, the main points of the two-work transfer device 4 will be explained.

A base end portion of an arm body 72 is pivotally supported by a bracket 71 fixed to a pedestal 70 placed on the floor 11, and is supported rotatably in the direction of arrow B by driving means of a circuit.

Work gripping tools 75 and 76 are attached to the distal end side of the arm body 72 and are moved by cylinders 73 and 74 in directions of arrow A (X-axis direction) toward or away from each other.

Although not clearly shown in the drawings, the gripping tools 75 and 76 are rotatably supported by rotation of a gear 77 supported on the arm body 72 side. Furthermore, an intermediate gear 78 that meshes with the gear 77 and a large gear 79 that meshes with the intermediate gear 78 are supported on the arm main body 72 side. On the other hand, one end of a link rod 81 is pin-coupled to a bracket 80 fixed on the pedestal 70, and the other end is pin-coupled to a large gear 79.The workpiece is gripped by workpiece gripping tools 75, 76 with six or more structures. When the arm body 72 is rotated in the direction of the arrow B in this state, the link rod 81 operates in accordance with the rotation, causing the large gear 79 to rotate, and the gear 77 to rotate via the intermediate gear 78. Therefore, the 5 gripping tools 75 and 76 rotate, and the workpiece 5
The posture change is automatically performed, and the workpiece 5 is engaged with the workpiece gripping device 3 in a transferable state as shown in the figure.

Next, the operation of this embodiment will be explained in more detail.

The workpiece 5 moves on the conveyor 6 in the direction of arrow A (X-axis direction)
The workpiece is transferred to the workpiece gripping tool 75 of the workpiece delivery device W4.
, 76. The cylinders 73 and 74 are operated to grip the workpiece 5, and at the same time, the arm body 72 is rotated as indicated by arrow B by a drive means (not shown). As described above, the link rod 81 operates as the arm body 72 rotates, and the large gear 79. Intermediate gear 78. The work gripping tools 75 and 76 rotate via the gear 77 to change the posture of the work 5. The arm main body 72 is rotated to the position shown by the two-dot chain line in FIG. 2, and the workpiece 5 is inserted into the gripping tool 69 of the gripping device 3.

When the gripping tool 69 grips the workpiece 5 due to the operation of the cylinder 68, the rotary head 67 rotates 180 degrees, and the workpiece 5 is
Position it toward the side of the surface turret head 1 so that it can be cut.

Next, the operation of the four-sided turret head 1 will be explained in some detail.

At the same time as the workpiece 5 is positioned on the workpiece gripping device 3, the main body 1a is rotated by the indexing rotation mechanism of the circuit in order to position the desired multi-axis head 7 etc. in a position facing the workpiece 5, and the slide base is rotated by E. It is moved forward in the direction of the arrow and brought close to the workpiece 5. Next, the drive motor 14 is activated to transmit rotation to the main shaft of the multi-axis head 7, etc., which is indexed and positioned at a position facing the workpiece 5.

The rotation of the drive motor 14 is transmitted from a gear 20 fixed to the shaft 19 to a gear 23 on the central shaft 22, and is transmitted from a bevel gear 24 on the central shaft 22 to a bevel gear 25 to rotate a bevel gear 26. Meanwhile, as shown in FIG. 5, the cylinder 49 is operated and the reciprocating rod 51. Rotate the swinging lever 28 via the lever 52,
The spline shaft 27 is moved to engage the spline groove 29 of the rotating shaft 15 of the multi-axis head 7 or the like. As described above, the rotation of the spline shaft 27 is transmitted to the rotating shaft 15, and the gear 30 fixed to the rotating shaft 15 is driven to rotate. The gear 3o is connected to the multi-axis head 7 as described above.
．． In order to mesh with the gear mechanism inside the circuit of 8.9, the main shaft connected to the gear mechanism will rotate.

Interchangeable multi-axis head 10. In the case of loa, the spline shaft 27 meshes with the rotating shaft 15a, and the rotating shaft 15a is connected to the multi-axis head 10. Since it is configured to be connected to the gear mechanism of the circuit in the loa, it is possible to rotationally drive the main shaft of the multi-axis head 10.10a in the same manner as described above.

Next, replaceable multi-axis head 10. The action of holding the loa in the main body 1a will be explained.

As shown in FIG. 3, when pressure oil is introduced from the hydraulic pump 31 side into the cylinder chamber 46 through the oil passage 48, the piston 42 moves to the right in the figure, and the receiver presses the plate 43. Therefore,
The clamp plate 33 is guided by the guide shaft 34 and moves in the axial direction thereof.

Therefore, the clamp plate 33 separates from the support seat 38. In that state, the multi-axis head 10.10a is viewed from the direction perpendicular to the paper surface.
is inserted, and the jaw part 37 is inserted into the locking part of the clamp plate 33.
It is attached by locking it. Next, the pressure oil in the cylinder chamber 46 is discharged, pressure oil is introduced into the cylinder chamber 45 through the oil passage 47, and the piston 42 is returned. On the other hand, the clamp plate 33
Since the sliding member 36 fixed to is constantly pressed to the left in the figure by the spring 41, when the pressing force from the piston 42 disappears, the clamp plate 33 is pressed toward the main body 1a by the reaction force of the spring 41. Multi-axis head 1
0. The jaw portion 37 of lOa is pressed against the support seat 38. Thereby, the multi-axis heads 10, 10a are fixed to the main body 1a. On the other hand, the multi-axis heads 10, 10a are connected to the main body 1a.
To release the clamp plate 33, the piston 42 is actuated, the receiver presses the plate 43 as described above, and the clamp plate 33 is moved in the direction shown in the figure. When a predetermined cutting process for one multi-axis heave 7 or the like is completed, the cylinder 49 is operated to release the engagement between the spline shaft 27 and the rotary shaft 15. Main body 1a
is rotated 90' to position the multi-axis head 8 necessary for the next process at a position facing the workpiece 5, and the same operation as above is performed to rotate the rotary shaft 15 to perform the next cutting process.

After the predetermined processing by the four-sided multi-axis heads 7.8, 9.10 is completed, or during the process, the multi-axis head 10 and the multi-axis head 10a are automatically exchanged.9 First, the slide supporting the main body 1a The base 13 is moved in the direction of the arrow E in the direction shown in Fig. 1 and inserted into the rad stocker 2 side on the multi-axis.

At the same time, the cylinder 58 of the multi-axis head stocker 2 operates,
The slide table 57 moves to the left in the figure along the direction of arrow G. It is fixed to the rod 6o of the cylinder 59. The locking tool 61 locks onto the locking tool 63 of the multi-axis head 10. At the same time, it is locked to a locking tool 63a of the multi-axis head 10a housed in a locking tool 62 fixed to the rod 60. By moving the roller 0 of the cylinder 57 in the direction of drawing it into the cylinder 57, the jaw portion 37 of the multi-axis head 10 is removed from the clamp plate 33 and moved upward in the view of FIG. Multi-axis head 10 that should be replaced at the same time
A moves from the bottom side of the figure to the center side, and its jaws are inserted into and attached to the clamp plate 33. 6 Next, move the slide base 13 of the four-sided turret head 1 to the left side of the figure along the direction of the arrow E. By moving the multi-axis head 10a to
automatic exchange is completed.

As described above, the loading of the workpiece 5, the movement and positioning of the workpiece 5, and the processing using the five multi-axis heads are automatically and sequentially performed without any loss time.

[Effect of the invention] According to the present invention, the following effects are achieved.

1) The workpiece automatically carried in by the conveyor is sequentially moved and positioned by each of the above-mentioned devices arranged almost in a straight line, and is configured so that predetermined processing is continuously performed by a four-sided turret head and a multi-axis head stocker. As a result, the entire machine can be made compact, small and lightweight, and space can be saved.

2) It can be formed at low cost since it does not require a special posture changing device.

3) Since the turret head is formed from four sides perpendicular to each other, it is easy to manufacture.

Accuracy measurement is also performed accurately, enabling high-precision machining. In addition, since there are four surfaces, there is no interference between drive mechanisms between adjacent multi-axis heads, and it is also possible to arrange something like an opening mechanism in parallel within the turret head.

Also, the four-sided turret head makes it easy to assemble.

Excellent maintainability.

[Brief explanation of the drawing]

Fig. 1 is a plan view showing the overall structure of an embodiment of the present invention, Fig. 2 is a front view of Fig. 1, and Fig. 3 is Fig. 4 showing the internal structure of the four-sided turret head in Fig. 1. FIG. 4 is a partial side view taken in the direction of arrow N to explain the main parts of the clamp plate in FIG. 3, and FIG. FIG. DESCRIPTION OF SYMBOLS 1... Four-sided turret head, 2... Multi-axis holding force, 3... Workpiece gripping device, 4... Workpiece delivery device, 5... Workpiece, 6... Transfer conveyor, 7
, 8, 9, 10. loa...multi-axis head, 11...
Floor, 12.64...Bed, 13...Slide base, 14...Drive motor, 1.5.15a...
Rotating shaft, 16... Rotating casing, 17... Drive shaft, 18... Motor shaft, 19... Axis, 20, 21, 2
3,30.32.77...Gear, 22...Central axis,
24.25...Bevel gear, 26...Bevel gear shaft, 27.
... Spline shaft, 28... Rocking lever, 29... Spline groove, 31... Hydraulic pump. 33... Clamp plate, 34... Guide shaft, 35
...Guide hole, 36...Sliding member, 37...Jaw part,
38...Support seat, 39...Guide hole, 40...Fixed shaft, 41...Spring, 42...Piston, 4
3...The receiver is a plate, 44,49°58.59,68,73
．． 74...Cylinder, 45.46...Cylinder chamber,
47, 48... Oil path, 50... Piston rod, 5
1... Reciprocating rod, 52... Lever, 53, 54...-
-1, J Mitsutswitch, 55...Base stand, 56.
... Guide rail, 57 ... Slide table, 60
--- Rod, 61, 62, 63.63a... Locking tool, 65... Slide rail, 66... Slide table. ... Gripping tool, 70. Bracket, 72... Workpiece gripping tool.・Large gear, 81... 67... Rotating head, 69... Frame, 71.80... Arm body, 75.76 78... Intermediate gear, 79... Link rond.

Claims (1)

[Claims] Multi-axis heads are mounted on four mutually perpendicular faces, indexed and rotated by 90 degrees, one of the multi-axis heads is exchangeably held, and the machine is supported so as to be slidable along the X-axis direction on the fixed side of the machine. a four-sided turret head, a multi-axis head stocker that stores the multi-axis head and is configured to be automatically exchangeable with the multi-axis head on the four-sided turret head side when necessary; a workpiece gripping device that is rotatably supported to a position facing the four-sided turret head and slidably supported on the fixed side of the machine along the Y-axis direction perpendicular to the X-axis; An arm-shaped member whose base end is pivotally supported on the side, grips an automatically transported workpiece with its other end, changes the posture of the workpiece while rotating around the base end, and transports the workpiece. An NC dedicated machine having a multi-axis head exchangeable turret head, characterized in that the gripping device is provided with a workpiece transfer device for transferring the workpiece.