JPH10263974A - Work shifting device and its method for machine tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the load of a worker by providing a work fitting/removing station at the position along a work machining station. SOLUTION: The machining of a work L is started, and the jig base 16 of a stand-by station 50R is moved to a work fitting/removing station 40. The jig base 16 of the work fitting/removing station 40 is lifted, and an unmachined work R is mounted on the jig base 16. The jig base 16 of the work fitting/ removing station 40 is lowered. The jig base 16 of the work fitting/removing station 40 is moved to the stand-by station 50R. When the machining of the work L at a machining station 20 is completed, the jig base 16 of the machining station 20 is lifted. The jig base 16 of the machining station 20 is moved to the work fitting/removing station 40, then the jig base 16 of the work fitting/ removing station 40 is lowered.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work transfer device for a machine tool and a method for transferring a work of a machine tool.

[0002]

2. Description of the Related Art As a work transfer device, for example,
Japanese Patent Application Laid-Open No. Hei 2-185341, "Machine Tool with Pallet Changer", Japanese Patent Publication No. Sho 60-5417, "Jig Stand Device for Machine Tool", and a machine provided with a work processing station and a work attaching / detaching station are known.

[0003] The above technique relates to a machine tool having a pallet changing device which requires a small installation space when a plurality of machine tools are installed. As shown in FIG. A work pallet 22 placed on a work table 20 in front of the pallet 12, a pallet change position A provided on the work table 20, a pallet standby position B provided on the side of the pallet change position A away from the column 12, and It is provided with a pallet loading / unloading position C provided on a pallet magazine 26 disposed on a side of the pallet standby position B away from the column 12, and a pallet exchange arm 29 for moving the work pallet 22 between the pallet exchange position A and the pallet standby position B. Things.

[0004] In the above-mentioned technique, an engaging claw member capable of engaging a jig table and a conveying member can be switched between an engaging position and a disengaging position by interlocking with the vertical movement of a lifting table. , As shown in FIG. 1 of the publication,
A work station A on which a work a is placed, work attachment / detachment stations B provided on both sides of the work station A, and a jig movable between the work station A and the work attachment / detachment stations B by the transfer means 5. Table 3
3 is provided.

The above technique is a work transfer device described in FIG. FIGS. 17A to 17F are schematic diagrams illustrating the configuration and operation of a conventional work transfer device.
The unprocessed work W is rounded, and the processed work W is double circled. 1A, a work transfer apparatus 100 includes a processing station 101 for processing a work W, a detachment station 102 for mounting and removing the work W from outside, and a processing station 101 for carrying the work W. Removal station 10
And a jig table 103 movably provided between the two.

[0006] First, an unprocessed work W is placed on a jig table 103 located at the attachment / detachment station 102. In (b), from the attachment / detachment station 102 to the processing station 1
The workpiece W placed on the jig table 103 is moved to 01.
In (c), the work W is
To process.

In (d), the processing station 101
Then, the processed workpiece W is moved to the attaching / detaching station 102. In (e), the work W is removed from the jig table 103 of the attachment / detachment station 102. In (f), another unprocessed work W is placed on the jig table 103 of the attachment / detachment station 102. To continue processing the workpiece W,
Repeat from (b).

[0008]

In the above description, the pallet exchange arm 29, the pallet standby position B to the pallet loading / unloading position C are used to move the work pallet 22.
A moving device (not shown) between them and a pallet magazine 26 for moving to the pallet carry-in / out position C are required, and there is a disadvantage that the device configuration becomes complicated.

In the above, since two work attaching / detaching stations B, B are provided, the worker has to reciprocate between these stations B, B in order to attach / detach the work a, which increases the burden on the worker. There are inconveniences. In the above description, a long cycle time is required for processing from mounting the work W to the jig table 103 from the outside at the attachment / detachment station 102 to removing the work W to the outside, and it is desired to further reduce the cycle time. Therefore, an object of the present invention is to provide a work transfer device and a work transfer method for a machine tool, which have a simple device configuration, can reduce a burden on an operator, and can shorten a processing cycle time. It is in.

[0010]

In order to achieve the above object, a first aspect of the present invention is a work processing station for processing a work by a machine tool, and a work on which a work to be transferred to the outside is placed or received from the outside. A work transfer station provided at a position facing the work processing station for mounting the work, and a second flow line orthogonal to a first flow line of the work connecting the work processing station and the work transfer station, and on both sides of the work transfer station. First and second work standby stations respectively arranged in the first and second work stations.
The first and second work moving means for moving the work on the second flow line constitute a work transfer device.

An unprocessed first work is placed on the work transfer station from the outside, and the unprocessed product is moved to the work processing station on the first flow line by the first work moving means, and the work is started. The unprocessed second work is placed on the work transfer station, and the unprocessed product is moved on the second flow line to the first work standby station by the second work moving means, and the first work is transferred to the empty work transfer station. The first work that has been processed is moved by the first work moving means on the flow line, and then the first work that has been processed and the second work that has not been processed are moved by the second work moving means to the second work. By moving simultaneously on the flow line of
The unprocessed second work is moved to the work waiting station, the work is transferred to the work transfer station, and the second work is moved to the work processing station on the first flow line by the first work moving means to start processing. Returning the processed first work to the empty work transfer station, moving the first work to the outside, and placing an unprocessed third work from the outside on the vacant work transfer station,
Work is processed sequentially.

Only the first and second work moving means are used as the work moving means, so that the equipment configuration can be simplified. Further, since there is only one work transfer station, the worker does not move to transfer the work, and the burden on the worker can be reduced. Furthermore, the first
・ By providing the second work standby station, the work is processed and the processed work is transferred to the outside to be transferred to the outside, or the standby work is performed to process the next unprocessed work. The work transfer time can be omitted from the time of one cycle from the work processing to the next work processing, and the work processing time can be reduced with the work processing station and the machine tool having only the work transfer station. The time of the one cycle can be reduced as compared with the time of the exchange.

According to a second aspect of the present invention, each of the processing stations of a machine tool, a work transfer station provided outside of the work station, and a work standby station provided on the left and right sides of the work transfer station are connected to the respective stations. When transferring the work, the first
The first unprocessed product is placed on the transfer station, the first unprocessed product is moved to the processing station to start processing, and the second unprocessed work is mounted on the empty work transfer station. The second unprocessed product is moved to one of the work standby stations, and the work, which is the first processed product, is moved to an empty work transfer station.
By simultaneously moving the first processed product and the second unprocessed product, the first processed product is transferred to the other work standby station.
The second unprocessed product is moved to the work transfer station, the second unprocessed product is moved to the work station, processing is started, and the first processed product is returned to the empty work transfer station. The first workpiece is moved to the outside, and a third workpiece, which is an unprocessed workpiece, is placed on an empty workpiece transfer station from the outside to sequentially process the workpieces.

While the work is being processed at the work processing station, the work, which is a processed product, is removed from the jig stand at the work transfer station and the next unprocessed work is attached. The work transfer time can be omitted from the time within one cycle, and the work transfer time is included in the work processing time in a work machine and a machine tool having only the work transfer station compared to the work transfer time. Can be shortened.

[0015]

Embodiments of the present invention will be described below with reference to the accompanying drawings. The drawings should be viewed in the direction of reference numerals. FIG. 1 is a perspective view of a honing apparatus 1 incorporating a work transfer apparatus according to the present invention. The honing apparatus 1 as a machine tool includes a slide base 3 suspended vertically on a front surface of a column 2 so as to be vertically movable. A drive motor 6 for driving a headstock 4 attached to the slide base 3 and a spindle 5 of the headstock 4, a horn head 7 having a plurality of grinding wheels for honing, and a vertical reciprocating motion of the horn head 7 A crank mechanism 8 for moving the slide base 3, a Z-axis cylinder 11 capable of moving the slide base 3 in the vertical direction (Z-axis direction in the drawing), and a base 12 installed on the near side of the column 2.
And an X-axis motor 13 provided on the side of the base 12, an X-axis slide table 14 movable in the X-axis direction by the X-axis motor 13, and a jig table 16 described below (see FIG. 2). ), Processing station 20 (see FIG. 2), transfer means 3
0, a work mounting / dismounting station 40 (see FIG. 4), a standby station 50 (see FIG. 7), and a work transfer device 80 (see FIG. 8) constituted by a transport means 60 (see FIG. 8).

The machining station 20 is provided with a tilt motor 21 provided on the X-axis slide table 14, a tilt table 22 which can be tilted in the Y-axis direction by the tilt motor 21, and a vertically movable table provided on the tilt table 22. And a jig table 23.

FIG. 2 is a side view of a honing apparatus incorporating the work transfer apparatus according to the present invention, and a jig table 23 is provided on a tilt table 22 of a processing station 20.
The jig table 16 for placing a work on the jig table 23 is moved up and down, and the jig table 16 is moved between the processing station 20 and the work attaching / detaching station 40 (see FIG. 4). This shows that the transfer means 30 as the first work moving means is provided in the column 2.

The tilt table 22 is a jig table 2
The projection 3 has projections 22a and 22b that fit into recesses (not shown) provided on the lower surface of the jig base 16 when the projection 3 is lowered. The transfer means 30 includes a cylinder 31, a rod 32 connected to a piston (not shown) in the cylinder 31,
2 and a rod guide 34 for supporting the rod 32. In addition, 35 is an auxiliary rod for assisting the rod 32, and 36 is the processing station 2
0 and a sliding member that slides on an intermediate table 81 (see FIG. 4) described later.

The claw portion 33 fits into the upper concave portion 16a (see FIG. 5) provided on the jig base 16 when the jig base table 23 of the tilt table 22 is raised.
The transfer means 30 is connected to the transfer means 6. Transfer means 30
The transfer means 30 can move the jig table 16 between the processing station 20 and the work attaching / detaching station 40 (see FIG. 4) in a state where the jig table 16 is connected to the jig table 16.

The operation of the tilt table and the transfer means described above will now be described. 3A to 3C are side views for explaining the operation of the tilt table and the transfer means according to the present invention. FIG. 3A is a view when the jig table is raised, and FIG. (C) shows the state when the jig table is inclined. In (a), the jig table 2
3 is raised, that is, when the jig base 16 is pulled into the processing station 20 from the work attaching / detaching station 40 (see FIG. 4), 33 are fitted.

In FIG. 2B, when the jig table 23 is lowered, the projections 22a and 22b of the tilt table 22 are fitted into recesses (not shown) provided on the lower surface of the jig table 23. The lowering of the jig table 23 causes the upper recess 16a (see FIG. 3A) of the jig table 16 and the transfer means 3 to move.
The engagement with the claw portion 33 of No. 0 is released. Here, the rod 32 of the transfer means 30 retreats to the column 2 side.

In (c), when the work W mounted on the jig base 16 is, for example, a cylinder block for a V-type engine, the axis of the cylinder bore CB is aligned with the axis of the main shaft 5 (see FIG. 1). The tilt table 22 is rotated around the rotation axis R and tilted. At this time, jig stand 1
6 is fitted to the projections 22a and 22b of the tilt table 22, the jig base 16 does not slide down.

As described above, the jig table 16 is connected to the transfer means 30 by raising the jig table 23, and the jig table 16 is moved to the tilt table 22 by lowering the jig table 23. With the configuration for coupling, the coupling between the jig table 16 and the transfer means 30 and the jig table 16
And the tilt table 22 can be easily and quickly switched by raising and lowering the jig table 23. The time from when the work W arrives at the processing station 20 to the work processing and the work W after the work processing are performed. The time required to leave the processing station 20 can be reduced.

FIG. 4 is a side view of the work transfer apparatus according to the present invention. The work transfer station 80 of the work transfer apparatus 80 has a work attaching / detaching station 40 on which a work to be transferred is placed or received from the outside. Is placed on the opposite side of the column 2 (see FIG. 2) of the processing station 20 via an intermediate table 81, and the jig base 16 can be moved up and down by an elevating cylinder 41 which will be described later. A position confirming means 43 of the elevating table 42, a work confirming means 44 for confirming the presence or absence of a work on the elevating table 42,
And a clamp releasing means 45 for releasing the clamp of the work clamped on the workpiece.

The position confirmation means 43 includes a cylinder 43a,
A rod member 43b which is moved up and down by the cylinder 43a.
And a guide member 43c for supporting the rod member 43b.
And a reference hole 16b formed on the lower surface of the jig base 16.
The position of the jig base 16b is confirmed by fitting the tip 43d of the rod member 43b to the jig base 16b. The work confirmation unit 44 includes a cylinder 44a and a movable member 44b that moves up and down in the cylinder 44a.

In the above-mentioned work attaching / detaching station 40, as a means for transferring the work to the outside or receiving the work from the outside, for example, an unloader for grasping the work and discharging it upward or to the left in the drawing, Is preferred.

FIGS. 5A and 5B are side views for explaining the connection between the jig table and the work moving means according to the present invention.
(A) shows a state where the lifting table is lowered, and (b) shows a state where the lifting table is raised. In (a), the jig base 16 has a lower recess 16c on the side surface. In the work attachment / detachment station 40, when the jig table 16 is lowered, the lower concave portion 16c of the jig table 16 and the projection 61 of the transfer means 60 are fitted, and the jig table 16 can be moved by the transfer means 60. . At this time, the upper concave portion 16a of the jig base 16 and the claw portion 33 of the transfer means 30 are not fitted.

In FIG. 3B, when the jig base 16 is raised, the fitting between the lower concave part 16c of the jig base 16 and the convex part 61 of the conveying means 60 is released, and the upper concave part 16a of the jig base 16 is released. And the claw 33 of the transfer means 30 are fitted to each other, and the jig base 16 can be moved by the transfer means 30. As described above, in the work attachment / detachment station 40, the coupling between the jig table 16 and the transfer unit 30 and the coupling between the jig table 16 and the transfer unit 60 can be quickly switched by elevating the elevating table 42 (see FIG. 4).

The operation of the transfer means 30 described above will now be described. 6 (a) and 6 (b) are side views for explaining the operation of the transfer means according to the present invention, where (a) is a state where the rod of the transfer means is extended, and (b) is a state where the rod is retracted. Indicates the status. 5A, when the jig base 16 is positioned at the work attaching / detaching station 40, the rod 32 of the transfer means 30 is extended and the jig base 16 is raised by the elevating table 42, as shown in FIG. As described above, the jig base 16 and the transfer means 30 are connected. Then, by operating the cylinder 31 (see FIG. 2) of the transfer means 30 and retracting the rod 32, the jig table 16 is moved from the work attaching / detaching station 40 to the processing station 20 as shown in FIG. Can be.

Further, by operating the cylinder 31 of the transfer means 30 to push out the rod 32 from the state of FIG. 6B, the jig table 16 is moved from the processing station 20 as shown in FIG. Can be moved to the work attaching / detaching station 40. As described above, the honing machine 1
(See FIG. 2), ie, the column 2 of the honing machine 1
By providing the transfer means 30 in (see FIG. 2), the space in front of the honing apparatus 1 can be used more effectively than providing the transfer means in front of the honing apparatus 1.

FIG. 7 is a front view of the work transfer device according to the present invention. The work transfer device 80 has standby stations 50R and 50L on both sides of the work attachment / detachment station 40. In this figure, the reference numeral of the component of the standby station 50R on the right is denoted by R, and the reference numeral of the component of the standby station 50L on the left is denoted by L. The standby stations 50R and 50L have different structures, and the detailed description will be made only for the standby station 50R.

The standby station 50R includes columns 51R, 51R mounted on a base 82, and columns 51R, 51R.
(... denotes a plurality of rollers, the same applies hereinafter.) And a limit table 54R mounted at an end of the transfer table 53R. The jig table 16 is placed on the rollers 52R, 52L of the transfer tables 53R, 53L and the rollers 47 of the transfer table 46 provided in the work mounting / dismounting station 40, and moves between the standby stations 50R, 50L and the work mounting / dismounting station 40. You can move.

FIG. 8 is a plan view of the work transfer device of the present invention, and shows that the transfer means 60 is disposed behind the work attaching / detaching station 40 and the two standby stations 50R, 50L. (See also FIGS. 5 (a) and 5 (b).) The transfer means 60 is a second work moving means,
2 and two upper and lower rails 64, 64 extending between the base portions 62, 63.
(One is omitted. See FIG. 5 (a).)
4, 64, a moving member 65, 66, 67, a connecting member 68 for integrally connecting the moving bodies 65, 66, 67, and a rail 64 for moving the moving bodies 65, 66, 67. , 64 and a ball screw 69 (see FIG. 5A) screwed to the moving body 65 in parallel.

The bases 62 and 63 are movable bodies 65 and 67
Have stoppers 62a and 63a. Moving bodies 66, 67
Are the above-mentioned convex portions 61 and 6 for coupling to the jig table 16.
One. The moving body 65 has a detection piece 65a that is detected by the proximity sensors 83, 83 attached to the base 82. The ball screw 69 is rotated by driving means such as a motor (not shown).

The operation of the conveying means 60 described above will now be described. 9 (a) and 9 (b) are plan views for explaining the operation of the transfer means according to the present invention. FIG. 9 (a) shows a state where the jig table is located at the work attaching / detaching station and the right standby station, and FIG. Indicates a state in which the jig table is located at the work attaching / detaching station and the left standby station. In (a), when the jig tables 16M and 16N (here, the right jig table is 16M and the left jig table is 16N) are located at the work attaching / detaching station 40 and the standby station 50R, the lifting table is set. 42 (see FIG. 7), the jig table 1
When the 6N is lowered, the lower concave portion 16c of the jig table 16N and the convex portion 61 of the transporting means 60 are fitted, and the jig table 16N and the moving body 67 of the transporting means 60 in FIG. . The lower concave portion 16c of the jig table 16M of the standby station 50R is fitted with the convex section 61 of the moving body 66 of the transport means 60, and the jig table 16M and the moving body 66 are connected.

In this state, the ball screw 69 (see FIG. 5A) is rotated by the driving means of the conveying means 60,
As shown in (b), the moving bodies 65, 66, 67 are integrally moved to the left in the figure, the jig table 16M is moved to the work attaching / detaching station 40, and the jig table 16N is moved to the standby station 50.
To L simultaneously.

FIG. 10 is a perspective view showing a jig table and a work according to the present invention.
(The back is omitted), and indicates that the work W, for example, the engine block of the V-type engine is fixed by the work clamps 17. The jig base 16 positions the work W by fitting a knock pin (not shown) provided on the lower surface of the work W into a hole (not shown) formed on the upper surface of the jig base 16, and conveys the work W. Is what you do. Therefore, when the work W is processed at the processing station 20 (see FIG. 3C), the jig table 16 is connected to the honing processing apparatus 1 (FIG. 1).
), The horn head 7 (see FIG. 2) of the honing apparatus 1 and the workpiece W are positioned.

FIG. 11 is a perspective view of the clamp releasing means according to the present invention.
(See FIG. 12 (a)).
(See FIG. 12A), a hydraulic oil supply member 45b that can be inserted into a large-diameter hole 16f (see FIG. 12A) opened on the side surface of the jig base 16, and a hydraulic oil supply member 45b. A lifting / lowering device 45 including a cylinder 45c capable of moving the member 45b forward and backward, a base 45d supporting the cylinder 45c, and rods 45e, 45e capable of moving the base 45d up and down.
f (see FIG. 4). The displacement preventing member 45a has protrusions 45g, 45g, and inserts the protrusions 45g, 45g into the engaged portion 16d of the jig base 16. As shown in FIG. 4, the lifting / lowering device 45f includes a lifting / lowering cylinder 45.
h.

The operation of the above-described clamp releasing means 45 will now be described. FIGS. 12A to 12C are cross-sectional views illustrating the operation of the clamp release means according to the present invention.
(A) shows a state where the clamp releasing means is lowered, (b) shows a state where the clamp releasing means is raised, and (c) shows a state where hydraulic oil is supplied from the clamp releasing means to the jig base. (A)
, The work clamp 17 includes a cylinder 17a,
A piston 17b movable in the cylinder 17a,
A piston rod 17c fixed to the piston 17b
And a clamp 17d provided at the end of the piston rod 17c, and a spring 17e provided in the cylinder 17a to push the piston 17b downward.

The jig base 16 has a large-diameter hole 16f formed in the side surface, and an oil passage 16g connected to the lower oil chamber 17f of the plurality of work clamps 17 following the large-diameter hole 16f. The figure shows the spring 17e of the work clamp 17.
And clamp the end of the work W via the clamp 17d to the jig base 1
6 shows the pressed state. Here, 16h, 16j, 1
6k is an O-ring. In (b), when the clamp releasing means 45 is raised, the coupled portion 16e of the jig base 16 is moved.
The slip prevention member 45a is fitted.

In (c), the large-diameter hole 16 of the jig table 16
f, the hydraulic oil supply member 45b of the clamp release means 45 is inserted, and the oil passage 1 of the jig base 16 is
6g, the lower oil chamber 17f of the work clamp 17 ...
Supply hydraulic oil to Then, the piston 17b and the clamp portion 17d of the work clamp 17 rise, and the work W
Release the clamp.

When the hydraulic oil supply member 45b is inserted into the large-diameter hole 16f and when the hydraulic oil is supplied to the oil passage 16g from the clamp release means 45, the displacement of the jig table 16 is prevented from being shifted by the displacement prevention member 45a. Can be prevented. Here, in order to clamp the work W again, the supply of the working oil from the working oil supply member 45b to the work clamp 17 is stopped, and the piston 17b is pushed down by the elastic force of the spring 17e (see FIG. 12A). . As described above, the work piece W can be easily and reliably attached to and detached from the jig base 16 by the clamp release means 45.

The operation of the work transfer device 80 described above will now be described. FIGS. 13A to 13H are schematic diagrams (first operation diagrams) for explaining the operation of the work transfer device according to the present invention, and will be described in order. (A) Work loading / unloading station 4 of work transfer device 80
An unprocessed work L (in the figure, L is rounded to indicate unprocessed, the same applies hereinafter) is placed on the jig base 16 at 0. (B) The jig table 16 of the work attaching / detaching station 40 is moved to the transfer means 30 (see FIG. 6) processing station 20.

(C) The jig table 16 of the processing station 20
Is lowered, the tilt table 22 (see FIG. 3C) is tilted, the processing of the work L is started, and the jig table 16 of the standby station 50R is moved to the work attaching / detaching station 40. (D) The jig table 16 of the work attachment / detachment station 40 is raised, and an unprocessed work R (R is rounded to indicate unprocessed in the figure; the same applies hereinafter) is placed on the jig table 16. . (E) The jig base 16 of the work attaching / detaching station 40 is lowered.

(F) The jig table 16 of the work attaching / detaching station 40 is moved to the standby station 50R. Further, the processing of the work L of the processing station 20 is completed, and the jig table 16 of the processing station 20 is raised. (In the drawing, a double circle is added to L to indicate that processing has been completed. The same applies to the following.) (G) The jig table 16 of the processing station 20 is moved to the work attaching / detaching station 40. (H) The jig table 16 of the work attaching / detaching station 40 is lowered.

FIGS. 14A to 14H are schematic diagrams (second operation diagrams) for explaining the operation of the work transfer device according to the present invention, and will be described in order following FIG. 13H. (A) The jig base 16 of the work attaching / detaching station 40 is moved to the standby station 50L, and at the same time, the jig base 16 of the standby station 50R is moved to the work attaching / detaching station 40L.
Move to. (B) The jig table 16 of the work attaching / detaching station 40 is raised.

(C) The jig table 16 of the work attaching / detaching station 40 is moved to the processing station 20. (D) Lower the jig table 16 of the processing station 20,
The tilt table 22 (see FIG. 3C) is tilted to start processing the work R, and the jig table 16 of the standby station 50L is moved to the work attachment / detachment station 40. (E) The jig base 16 of the work attaching / detaching station 40 is raised, the clamp of the work L is released by the clamp releasing means 45 (see FIG. 12C), and the processed work L is removed from the jig base 16.

(F) The unprocessed work L is placed on the jig table 16 of the work attaching / detaching station 40 and clamped. (G) The jig table 16 of the work attaching / detaching station 40 is lowered. (H) The jig table 16 of the work attaching / detaching station 40 is moved to the standby station 50L. Further, the processing of the work R in the processing station 20 is completed, and the processing station 2
The jig table 16 of 0 is raised.

FIGS. 15A to 15G are schematic diagrams (third operation diagram) for explaining the operation of the work transfer device according to the present invention, and will be described in order following FIG. 14H. (A) The jig table 16 of the processing station 20 is moved to the work attaching / detaching station 40. (B) The jig table 16 of the work attaching / detaching station 40 is lowered. (C) At the same time as moving the jig table 16 of the work attaching / detaching station 40 to the standby station 50R, the jig table 16 of the standby station 50L is moved to the work attaching / detaching station 40R.
Move to.

(D) The jig base 16 of the work attaching / detaching station 40 is raised. (E) The jig table 16 of the work attaching / detaching station 40 is moved to the processing station 20. (F) Lower the jig table 16 of the processing station 20,
The tilt table 22 (see FIG. 3C) is tilted to start processing the work L, and the jig table 16 of the standby station 50R is moved to the work attaching / detaching station 40.

(G) The jig base 16 of the work attaching / detaching station 40 is raised, and the clamp releasing means 45 (FIG. 12)
(See (c)), the clamp of the work R is released, and the processed work R is removed from the jig base 16. With this, work L
And the processing of the work R is completed. When processing another workpiece, the above cycle is repeated.

FIG. 16 is a flowchart showing a work flow of the work transfer device according to the present invention, which is shown together with a comparative example. STxx is a step number. Comparative examples are
17 shows the work flow of the work transfer device shown in FIG. 17, that is, the work transfer device of the present invention does not have a standby station. 13 (a) to 13 (h), 14 (a) to 14 (h), and FIG.
5 (a) to 5 (g), detailed description will be omitted. In the flow chart, "Move ↑" means move from the work attaching / detaching station to the processing station, "Move ↓"
Indicates the movement from the processing station to the work attachment / detachment station, and “move ←” indicates the movement from the work attachment / detachment station to the standby station 50L and the standby station 50L.
R to the work attachment / detachment station are performed at the same time, and “move →” means movement from the work attachment / detachment station to the standby station 50R and the standby station 50L.
To the work attachment / detachment station. Also, the step of lifting and lowering the jig table 16 at the work attaching / detaching station 40 is omitted.

The comparative examples will be described below in order. ST100: Jig table 103 of detachable station 102
The work W is placed on the work. ST101: The work W is moved from the attachment / detachment station 102 to the processing station 101. ST102 Work W is processed in the processing station 101. ST103: Move the processed workpiece W from the processing station 101 to the attachment / detachment station 102.

ST104: At the attaching / detaching station 102, the processed work W is removed from the jig table 103, and the unprocessed work W is placed on the jig table 103. ST105: The work W is moved from the attachment / detachment station 102 to the processing station 101. ST106 Processes the workpiece W at the processing station 101. ST107: Move the processed work W from the processing station 101 to the attachment / detachment station 102.

ST108: The processed work W is removed from the jig table 103 at the attaching / detaching station 102, and the unprocessed work W is placed on the jig table 103. ST109: Move the work W from the attachment / detachment station 102 to the processing station 101. ST110 Processing the work W at the processing station 101. Thereafter, the process returns to ST03 and repeats.

In the flow chart of the present invention, in the portion surrounded by the two-dot chain line, the work processing step, “movement ←”,
"Move →", especially "Place work" shown in bold frame,
The work process that occupies a large time ratio of “removing the processed work” is arranged in parallel. Therefore, the work process is not included in the cycle from processing of a work to processing of the next work. On the other hand, in the flow chart of the comparative example, the work processing step within the two-dot chain line and the work step of “removing the processed work and mounting another work” indicated by the thick frame are in series. Therefore, the above operation steps are included in the cycle.

As a result, according to the present invention, another work can be placed on the jig table 16 or removed from the jig table 16 while the work is being processed. The present invention does not require any particular time to be put on the jig or removed from the jig stand 103. Therefore, according to the present invention, it is possible to reduce the cycle time from processing of a work to processing of the next work.

In the present invention, FIG. 13 (f), FIG.
As shown in (h), after the two jig tables 16, 16 are moved by the transfer means 60, the processing of the work in the processing station 20 is completed.
When moving at 0, the processing of the workpiece at the processing station 20 may have already been completed. In this way, the processed work can be moved from the processing station 20 to the work attaching / detaching station 40 immediately after the jig tables 16 and 16 are moved by the transfer means 60.

In FIG. 12C, the jig table 16
A valve mechanism is provided in the large-diameter hole 16f, and the valve mechanism is opened only when the hydraulic oil supply member 45b is inserted into the large-diameter hole 16f, thereby enabling the flow of hydraulic oil between the hydraulic oil supply member 45b and the oil passage 16g, When the hydraulic oil supply member 45b is not inserted, the valve mechanism may be closed to shut off the oil passage 16g from the outside.

Further, in the work attaching / detaching station 40 shown in FIG. 4, as a means for delivering a work to the outside or receiving a work from the outside, in the present embodiment,
Although the unloader and the loader are shown, the present invention is not limited thereto, and a crane or the like may be used.

[0061]

According to the present invention, the following effects are exhibited by the above configuration. The work transfer device according to claim 1, wherein the work is provided at a position facing the work processing station for mounting a work to be transferred to the outside or for mounting a work received from the outside. A transfer station, first and second work standby stations respectively disposed on a second flow line orthogonal to a first flow line of the work connecting the work processing station and the work transfer station and on both sides of the work transfer station; First and second moving the workpiece on the first and second flow lines
Since it is composed of the second work moving means, only the first and second work moving means are used as the work moving means, and the equipment configuration can be simplified.

Also, since there is only one work transfer station, the worker does not move for work transfer, and the burden on the worker can be reduced. Further, by providing the first and second work standby stations, it is possible to make the standby station wait for transferring the processed work to the outside while processing the work, or to process the next unprocessed work. It can be made to stand by at a standby station, and the work transfer time can be omitted from the time of one cycle from work processing to the next work processing.
In the case of a machine tool having only a work processing station and a work transfer station, the time of one cycle can be reduced as compared with the work transfer time included in the work processing time.

A method of transferring a workpiece of a machine tool according to a second aspect is as follows.
When transferring a work to each station from a processing station of a machine tool, a work transfer station for work provided to the outside provided in front of the work station, and a work standby station provided on the left and right of the work transfer station, A work which is a first unprocessed product is placed on the transfer station from the outside, the first unprocessed product is moved to the processing station and processing is started, and a second unprocessed product is transferred to the empty work transfer station. A work is placed, the second unprocessed product is moved to one work standby station, the work which is the first processed product is moved to an empty work transfer station, and then the first processed product and the second By moving the unprocessed products at the same time, the first processed product is transferred to the other work standby station, and the second unprocessed product is transferred to the work transfer station. Move the second unprocessed product to the processing station to start processing, return the first processed product to the empty work transfer station, move the first processed product to the outside, By placing a third unprocessed work from the outside on the empty work transfer station,
Since the workpieces are machined sequentially, while the workpieces are being machined at the workpiece machining station, the workpieces are removed from the jig table at the workpiece transfer station, and the next unworked workpieces are attached. The work transfer time can be omitted from within one cycle time until the work processing, and the work transfer time is included in the work processing time with the work processing station and the machine tool having only the work transfer station. One cycle time can be reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view of a honing machine incorporating a workpiece transfer device according to the present invention.

FIG. 2 is a side view of a honing machine incorporating the workpiece transfer device according to the present invention.

FIG. 3 is a side view for explaining the operation of the tilt table and the transfer means according to the present invention.

FIG. 4 is a side view of the work transfer device according to the present invention.

FIG. 5 is a side view for explaining the connection between the jig table and the work moving means according to the present invention.

FIG. 6 is a side view for explaining the operation of the transfer means according to the present invention.

FIG. 7 is a front view of a work transfer device according to the present invention.

FIG. 8 is a plan view of the work transfer device of the present invention.

FIG. 9 is a plan view for explaining the operation of the conveying means according to the present invention.

FIG. 10 is a perspective view showing a jig base and a work according to the present invention.

FIG. 11 is a perspective view of a clamp release unit according to the present invention.

FIG. 12 is a sectional view for explaining the operation of the clamp releasing means according to the present invention.

FIG. 13 is a schematic diagram (first operation diagram) for explaining the operation of the workpiece transfer device according to the present invention.

FIG. 14 is a schematic diagram (second operation diagram) for explaining the operation of the work transfer device according to the present invention.

FIG. 15 is a schematic diagram (third operation diagram) for explaining the operation of the work transfer device according to the present invention.

FIG. 16 is a flowchart showing a work flow of the work transfer device according to the present invention.

FIG. 17 is a schematic diagram illustrating the configuration and operation of a conventional work transfer device.

[Explanation of symbols]

1: machine tool (Honing machine), 16: jig stand,
Reference numeral 20: work processing station, 30: first work moving means (transfer means), 40: work transfer station (work attaching / detaching station), 50R, 50L: work standby station, 60: second work moving means (transporting means) ), 80: Work transfer device, L, R, W: Work.

Claims (2)

[Claims] 1. A work processing station for processing a work by a machine tool, and a work transfer station provided at a position facing the work processing station for mounting a work to be transferred to the outside or mounting a work received from the outside. A first and a second work standby station respectively disposed on a second flow line orthogonal to a first flow line of a work connecting the work processing station and the work transfer station and on both sides of the work transfer station; A work transfer device for a machine tool comprising first and second work moving means for moving a work on a second flow line; 2. Transferring a work from a processing station of a machine tool, a work transfer station provided in front of the work station for external work, and a work standby station provided on the left and right of the work transfer station to each station. At the time of loading, a work which is a first unprocessed product is placed on the transfer station from the outside, the first unprocessed product is moved to the processing station and processing is started, and the second work is transferred to the empty work transfer station. A work as an unprocessed product is placed, the second unprocessed product is moved to one work standby station, the work as the first processed product is moved to an empty work transfer station, and then a first work is performed. By moving the processed product and the second unprocessed product at the same time, the first processed product is transferred to the other work standby station, and the second unprocessed product is transferred. The second unprocessed product is moved to the processing station, processing is started, the first processed product is returned to the empty work transfer station, and the first processed product is moved to the outside. A work transfer method for a machine tool, wherein a work, which is a third unprocessed product, is placed on a vacant work transfer station from the outside to sequentially process the work.