JP2819002B2 - Pallet changing device in processing machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pallet exchanging device for exchanging a pallet on a rotary table of a processing machine on which a work is mounted and fixed, with another pallet with a centered work while the work is completed. Things.

[0002]

2. Description of the Related Art A pallet on which a work is mounted and fixed is fixed on a work rotating table of a processing machine, and the work is rotated on the pallet while the work is being processed. The pallet is fixed and centering is performed in advance.

[0003] When the work of the processing machine is completed, the centered pallet and the processed pallet are exchanged, the work processing is started by the processing machine, and the work of the processed pallet is appropriately removed. Perform centering work again, such as replacing.

In a conventional processing machine, the work of exchanging a pallet between a rotary table of the processing machine and a rotary table for centering work is performed as described above. Is used.

A work rotation table for the centering operation is provided on the front side of the work rotation table of the processing machine, and a retreat mounting portion for temporarily retreating and mounting the pallet is provided on the side opposite to the front.

A rail-shaped swivel table is rotatably provided in the meantime, and the swivel table is provided with a movable locking portion.

Therefore, in the case of replacement, the turning table is first turned to bring one end of the turning table close to the work turntable of the processing machine, and the pallet on the work turntable is locked by the movement locking portion. The work table is moved and mounted on the swivel table by moving the movable locking portion, and is taken out from the work rotary table. Then, the swivel table is rotated again so that one end thereof is close to the retreat placement unit, and the other end is close to the work rotating table for centering work, and the pallet on the swivel table is moved and the locking unit is moved. Then, the pallet, which has been centered on the work rotating table for centering work, is similarly moved and mounted on the revolving table by moving the movable locking unit.

Then, the swivel table is rotated again, and the pallet on the swivel table is moved and mounted on the work rotary table of the processing machine in a manner reverse to the previous removal, and set again. The pallet, which has been rotated and retracted to the evacuation mounting portion, is moved and mounted on the swivel table, and the pallet that has finished the work processing is moved and mounted on the work rotation table for centering work, thereby completing the exchange. .

[0009]

The pallet changing device of the conventional processing machine performs the centering operation during the work processing as described above, and when the work processing is completed, the heavy pallet can be appropriately changed. Although the exchanging operation is very complicated, there is a problem that the exchanging operation cannot be performed speedily, for example, it is necessary to provide an evacuation mounting portion and temporarily replace the evacuation mounting portion.

[0010] In addition to the rotary drive mechanism for rotating the rotary table for centering work, a rotary drive mechanism for rotating the rotary table must be provided, which increases the cost.

The present invention solves this problem by improving such a conventional exchange device, and is extremely excellent in workability, capable of easy and speedy exchange, and capable of reducing costs. The purpose of the present invention is to provide an improved pallet changing device.

[0012]

The gist of the present invention will be described with reference to the accompanying drawings.

A turning table 3 for supporting a pallet 2 on which a work 1 is mounted and fixed is rotatably provided at a position close to a work rotating table 5 for fixing the pallet 2 of a processing machine 4, and a moving part is provided on the turning table 3. 6 is provided slidably, and a locking portion 7 for locking the pallet 2
The pallet 2 is locked by the locking part 7 of the moving part 6 and the moving part 6 is slid and moved.
The turning table 3 and the moving unit 6 are configured so as to be mutually movable from a work rotating table fixing position a of the processing machine 4 to a predetermined mounting position b on the turning table 3. A centering work rotating table section 8 for centering the work 1 is provided, and the pallet 2 is fixed to a fixed position b1 of the centering work rotating table section 8 so that at least the fixed position b1 is set. One of the mounting positions b on the turntable 3 is set, and the rotation drive unit 9A of the centering work turntable unit 8 and the rotation drive transmission mechanism 9B of the turntable 3 are connected to the rotation center axis thereof.
10 and the rotary drive source 11 are shared, and the above-mentioned mounting positions b2 and b3 are formed at two positions before and after the turning table 3, and one of the mounting positions is located between the mounting positions b2 and b3. Fixed position b of the centering work rotary table 8
1 and the moving part 6 and the locking part 7 are configured so that the two pallets 2 can be moved at the same time by the movement of the moving part 6. The two pallets 2 located at b2 and the rear mounting position b3 are fixed to the fixed position b1 of the intermediate centering work rotary table 8 and the fixed position a of the work rotary table of the processing machine 4.
The present invention relates to a pallet changing device in a processing machine, wherein each mounting position and each fixed position are arranged so as to be movable relative to each other.

[0014]

[0015]

[0016]

For example, the rotary power of the rotary drive source 11 is transmitted via the drive transmission switching mechanism 12 to the rotary drive 9A of the centering work rotary table section 8 and the rotary drive mechanism 9 of the turning table 3.
By transmitting the rotation to B, the turning table 3 is turned and rotated by the shared rotation drive source 11, or only the centering work turning table section 8 is rotated for centering work.

[0017]

For example, in the state shown in FIG. 1A or FIG. 1B, the work 1 on the pallet 2 fixed on the work rotary table 5 of the processing machine 4 is processed.

Further, the work 1 of the pallet 2 fixed on the centering work rotating table section 8 of the turning table 3 is centered.

When the work processing is completed, the two pallets 2 are exchanged, for example, in the following procedure.

The rotary drive transmission mechanism 9B of the rotary table 3 is driven by the rotary drive source 11 shared with the centering work rotary table section 8 via the drive transmission switching mechanism 12, and the rotary table 3 is moved to the state shown in FIG. At this position, the locking part 7 of the moving part 6 is locked to the pallet 2 on the work rotating table 5 at this position.

In this state, the moving unit 6 is moved as shown in FIG.
Is moved and mounted on the swivel table 3.

That is, the pallet 2 at the work rotating table fixing position a of the processing machine 4 and the pallet 2 at the fixing position b1 of the centering work rotating table section 8 are simultaneously placed on the front side of the turning table 3. b2 and rear mounting position b
Move to 3 and place.

Then, as shown in FIG. 1E, the swivel table 3 is rotated by 180 degrees, and as shown in FIG. The locking portion 7 is unlocked, and the centered pallet 2 is moved to the processing machine 4.
The pallet 2 on which the workpiece has been processed is moved and mounted on the centering work rotary table section 8 of the revolving table 3.

That is, the pallet 2 at the front mounting position b2 and the pallet 2 at the rear mounting position 3 are connected to the work rotary table fixing position a and the centering work rotary table section 8.
To the fixed position b1. The pallet is changed in this way.

FIG. 1 (g), FIG. 1 (a), and FIG.
The exchange operation is repeated, for example, through the state of (b).

[0027]

[Embodiment] In this embodiment, two guide rail portions 13 are provided on the left and right.
Is formed on a machine base 14, and a disk-shaped pallet 2 on which a work 1 is mounted and fixed is engaged with a guide portion 15 formed on the back surface of the pallet 2 on a guide rail portion 13 so as to be mounted on the turntable 3. Is configured to be slidable in its length direction.

FIG. 2 shows a schematic configuration of the apparatus.
Is a processing tool portion disposed above the work rotating table 5 of the processing machine 4, 16 is a stair for an operator to climb on a machine base 14 on which the apparatus is installed, and 17 is a center of the turning table 3 on the machine base 14. Centering jig mount for centering rotary table 8 provided at 18
Denotes an operation section of the present apparatus.

In this embodiment, as shown in FIGS. 3 and 4, the turning table 3 is provided with a moving part 6 which slides along the length direction of the two guide rails 13 and the moving part 6 is provided.
A pair of hook plate-shaped locking portions 7 for locking to the engaging portions 19 at the back end of the pallet 2 are provided at both front and rear ends of the pallet 2, and the two pallets 2 are simultaneously hooked and moved at the interval of the locking portions 7 as described above. Designed properly to be able to.

The locking portion 7 is rotatable up and down, and when the locking portion 7 rises up vertically, the engaging portion of the pallet 2
The engaging portion 19 is configured to be disengaged from the engaging portion 19 when it is turned down horizontally.

The disengagement mechanism for performing this disengagement operation includes a moving unit 6
Are provided at both front and rear ends of the turntable 3 in consideration of the fact that the front and rear move. This engaging and disengaging mechanism is provided with rack teeth 20 that move up and down, and when the moving part 6 stops moving to a predetermined position, a pinion 21 that meshes with the rack teeth 20 is provided on the undulating rotation shaft 22 of the locking part 7. By moving the rack teeth 20 up and down, the locking portion 7 is raised and lowered via the pinion 21 and the raising and lowering rotation shaft 22 to control switching of the engagement and disengagement between the moving portion 6 and the pallet 2.

Further, the slide moving mechanism 23 of the moving section 6
Connects one end of a chain 24 housed in a chain case 25 arranged along the moving direction to the moving portion 6,
A chain storage section 26 for folding and storing the other end of the 24 is provided, and the chain 24 is configured to be driven by a sprocket 27. Therefore, when moving the moving portion 6 to one side and moving, the sprocket 27 is rotated to rotate the chain 24.
When the chain is pushed by the chain 24 while being supported by the chain case 25, and when the chain is pulled back to the opposite side, the sprocket 27 is reversely rotated to pull the chain 24 back. In the present embodiment, mounting positions b2 and b3 for supporting the pallet 2 are provided at two positions before and after the turning table 3, and two simultaneous pallets 2 are provided at the mounting positions b2 and b3.
It is designed to be able to arrange bearings.

A centering work rotating table 8 is provided at the center of the turning table 3 between the mounting positions b2 and b3, and the interval between the mounting positions b2 and b3 and one of the mounting positions b The distance between the fixed position b1 of the centering work rotating table section 8 and the fixed position a of the work rotating table of the processing machine 4 is set to be equal, and one moving section 6 is moved to provide the moving section 6 at both ends. Pallet 2
And the two pallets 2 can be moved simultaneously.

That is, in this embodiment, as shown in FIG. 1C, when the end of the turning table 3 is directed to the work rotating table 5 of the processing machine 4, the turning table 3 is located at the work rotating table fixing position a of the processing machine 4. It is designed so that a certain pallet 2 and the pallet 2 at the fixed position b1 of the centering work rotating table section 8 can be simultaneously moved and mounted to the front and rear mounting positions b2 and b3.

In this embodiment, as shown in FIGS. 5 and 6, the rotary drive 9A of the centering work rotary table section 8 and the rotary drive transmission mechanism 9B of the revolving table 3 are connected to the rotary center shaft 10 and the rotary drive. Source 11 is configured to share.

That is, the rotational power of one rotary drive source 11 is transmitted to the rotary drive 9A of the centering work rotary table section 8 and the rotary drive transmission mechanism 9B of the turning table 3 via the drive transmission switching mechanism 12. Thus, the rotary table 3 is configured to be capable of rotating the rotary table 3 by the shared rotary drive source 11 and rotating only the centering work rotary table section 8.

More specifically, as shown in FIG. 5, a centering work rotating table section 8 is formed on a machine base 14 so that the center of the turning table 3 can be rotated on its own by separating the center section from both end sections 3A. The rotary drive source 11 is provided on the side, and this rotary drive source
By the rotation drive of 11, the transmission gear 30 meshing with the transmission teeth 29 provided on the peripheral surface of the centering work rotary table section 8 is rotated via the bevel gear 28 to rotate the centering work rotary table section 8 by itself. ing.

The pallet 2 placed on the centering work rotating table section 8 is lowered and fixedly set on the centering work rotating table 8, and the centering work rotating table 8 is set.
Are rotated by the rotary drive 9A to perform the centering work of the work 1 mounted on the pallet 2.

The centering work rotating table 8 and both end portions 3A are connected to the peripheral end of the centering work rotating table 8 to transmit the rotational force, and the centering work rotating table 8 is rotated. And a drive transmission switching mechanism 12 for turning and rotating the turntable 3 including the end portions 3A.

The drive transmission switching mechanism 12 is provided with a connecting piece 31 at the connecting portion of the both end portions 3A so as to be able to move up and down, and is connected to the connecting piece 31 on the machine base 14 to lock the both end portions 3A immovably. A groove 32 is provided, and a rotation connection side receiving groove 33 for connecting the centering work rotary table 8 and the connecting piece 31 by connecting with the connecting piece 31 is provided with a centering work rotary table 8.
Is provided at the peripheral surface connecting portion.

The connecting piece 31 is provided with a pinion 34, and the rack teeth 35 for turning the pinion 34 to raise and lower the connecting piece 31 are vertically moved by a cylinder 36.
Therefore, the rack teeth 35, the pinion
When the connecting piece 31 is tilted downward through 34 and engaged with the non-moving-side receiving groove 32, the centering work rotating table section 8 and both end portions 3A are cut off and the centering work rotating table section 8 is separated.
When only the rotary member is rotated to raise the connecting piece 31 and engage with the rotary connecting side receiving groove 33, the centering work rotating table portion 8 is rotated.
And both end portions 3A are connected to each other, and both end portions 3A (the turning table 3) are rotated by the guide wheels 37 by the driving force of the rotary drive source 11 together with the centering work rotating table portion 8.

Reference numeral 38 in the figure denotes a rotation positioning sensor for rotating the turntable 3 by a predetermined angle and stopping the turntable.

Therefore, this embodiment operates as follows.

In the state shown in FIG. 1A or FIG. 1B in which the moving unit 6 is slid to the opposite side, the work 1 on the pallet 2 fixed on the work rotary table 5 of the processing machine 4 is processed. .

In addition, the work 1 of the pallet 2 fixed on the centering work rotating table 8 of the turning table 3 is centered.

When the work processing is completed, the two pallets 2 are exchanged in the following procedure.

The rotary drive transmission mechanism 9B of the rotary table 3 is driven by the rotary drive source 11 shared with the centering work rotary table section 8 via the drive transmission switching mechanism 12, and the rotary table 3 is moved to the state shown in FIG. At this position, the locking part 7 of the moving part 6 is locked to the pallet 2 on the work rotating table 5 at this position.

In this state, the moving unit 6 is moved as shown in FIG.
Is moved and mounted on the swivel table 3.

That is, the pallet 2 at the work rotating table fixed position a of the processing machine 4 and the pallet 2 at the fixed position b1 of the centering work rotating table section 8 are simultaneously placed on the front side of the turning table 3. b2 and rear mounting position b
Move to 3 and place.

Then, as shown in FIG. 1E, the swivel table 3 is rotated by 180 degrees, and as shown in FIG. The locking portion 7 is unlocked, and the centered pallet 2 is moved to the processing machine 4.
The pallet 2 on which the workpiece has been processed is moved and mounted on the centering work rotary table section 8 of the revolving table 3.

That is, the pallet 2 at the front mounting position b2 and the pallet 2 at the rear mounting position 3 are connected to the work rotary table fixing position a and the centering work rotary table section 8.
To the fixed position b1. The pallet is changed in this way.

In the state shown in FIGS. 1 (g) and 1 (a), the turning table 3 is turned again in a direction completely opposite to the previous turning direction. Control may be performed so as not to rotate, or the exchange operation may be repeated.

[0053]

According to the present invention, since the centering work rotating table for centering work is provided on the turning table as described above, the rotation driving device of the centering work rotating table and the rotation driving mechanism of the turning table are provided. An excellent processing machine that can be configured so that the rotary drive source can be shared with a simple configuration, so that at least one rotary drive source that requires a large capacity can be omitted, so that the manufacturing cost is extremely low compared to the conventional example. Can be provided.

In addition, since the present invention does not require a retreat placement section as in the prior art in addition to the swivel table, the replacement work can be performed speedily, the workability is excellent, and the apparatus can be designed compact.

Further, front and rear mounting positions are formed at two positions before and after the turning table, and a fixed position of the centering work rotating table portion, which is one of the mounting positions, is provided between the mounting positions. As a result, the two pallets positioned at the front and rear placement positions are simultaneously moved by the movement of the moving unit, and the fixing position of the intermediate centering work rotation table unit and the work rotation table of the processing machine are fixed at the same time. The pallet at the fixed position of the work rotary table of the processing machine and the pallet at the fixed position of the centering work rotary table are simultaneously placed on the front side of the turning table. Movement and retreat to the mounting position on the rear side and the rear side, rotate the swivel table 180 degrees, move the moving part in the reverse of the removal procedure, and unlock the locking part. Went The pallet can be moved and placed on the work rotating table of the processing machine, and the pallet after work processing can be moved and placed on the work rotating table for centering of the swivel table. It is a pallet changer in a very excellent processing machine that can be changed.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of an operation procedure of the present embodiment.

FIG. 2 is a schematic configuration explanatory plan view of the present embodiment.

FIG. 3 is a plan view schematically illustrating the configuration of a turning table according to the embodiment.

FIG. 4 is a front sectional view illustrating a schematic configuration of a swivel table according to the embodiment.

FIG. 5 is a schematic cross-sectional front view of a rotary driving machine and a rotary driving mechanism in the center of the turning table according to the embodiment.

FIG. 6 is an explanatory cross-sectional view of the drive transmission switching mechanism of the present embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Work 2 Pallet 3 Rotating table 4 Processing machine 5 Work rotary table 6 Moving part 7 Locking part 8 Centering work rotary table 9A Rotary drive 9B Rotary drive mechanism 10 Rotary shaft 11 Rotary drive source a Work rotary table fixed position b Placement position b1 Fixed position b2, b3 Placement position

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Makoto Hasegawa 2-1 Kitazono-cho, Nagaoka-shi, Niigata Inside OM Seisakusho Nagaoka Plant (72) Inventor Futao Suzuki 2-1 Kitazono-cho, Nagaoka-shi, Niigata (56) References JP-A-62-292338 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) B23Q 7/00

Claims (1)

(57) [Claims] 1. A swivel table for supporting a pallet to which a work is attached and fixed is rotatably provided at a position close to a work rotary table for fixing a pallet of a processing machine, and a moving unit is slidably provided on the swivel table. The moving portion is provided with a locking portion for locking to the pallet, and the pallet is locked to the locking portion of the moving portion and the moving portion is slid to move the pallet to the work rotary table fixing position of the processing machine. The turning table and the moving section are configured to be mutually movable to a predetermined mounting position on the turning table, and a centering work rotating table section for centering the work is provided on the turning table, The pallet is configured to be fixed at a fixed position of the centering work rotating table section, and the fixed position is set at least as a mounting position on the rotating table. The rotary drive of the centering work rotary table and the rotary drive transmission mechanism of the rotary table are shared by the rotation center axis and the rotary drive source. A writing position is formed, and a fixed position of the centering work rotating table portion, which is one of the mounting positions, is disposed in the middle of the mounting position, and two pallets are simultaneously moved by moving the moving portion. The moving part and the locking part are configured so that
Due to the movement of the moving unit, the two pallets located at the front mounting position and the rear mounting position are moved to the fixed position of the intermediate centering work rotating table and the fixed position of the work rotating table of the processing machine. A pallet changing device in a processing machine, wherein each mounting position and each fixed position are arranged so as to be freely movable.