JPH11129118A - Phase indexing device and method for gear blank - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a phase indexing device in a simple structure, capable of indexing the phases of different types of works. SOLUTION: A phase indexing device has a work carry-in means 3 arranged at the work carry-in side of a processing machine for works, a work separating means 4 provided at the downstream side of the work carry-in means 3 to separate the works 2 continuously carried in by the work carry-in means 3 one by one, a phase indexing means 15 provided at an indexing position C set between the work separating means 4 and the processing machine to index the phase of the works 2 by fitting holes 2a in the works 2 and teeth 2b, an up-and-down movable thrusting means 17 to thrust the works 2 against the phase indexing means 15 from upward and a rotation driving means to drive the rotation of the phase indexing means 15. It is formed in a simple structure, at a low cost with high reliability.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a phase indexing device and a phase indexing method for a gear blank to be sized.

[0002]

2. Description of the Related Art Conventionally, when sizing a gear blank (work) formed by a forging press or the like, the work is indexed before processing. What is described in Japanese Utility Model Publication No. 5-39786 is known.

[0003] The indexing device disclosed in the above publication has a rotary shaft that rotates as the slide descends on the slide side of the press, and a plurality of positioning pieces below the rotary shaft that mesh with the teeth of the workpiece to perform phase indexing of the workpiece. The work is rotated by an attachment provided at the lower end of the rotary shaft by lowering the slide, and the work is indexed by engaging with a plurality of positioning pieces.

[0004]

However, the indexing device disclosed in the above publication has a structure in which a spiral groove is provided on the rotating shaft to rotate the rotating shaft, so that the rotating mechanism is complicated and it is difficult to machine the spiral groove. The device is expensive because it requires a lot of man-hours, and the air cylinder is provided on the slide side that moves up and down, which makes it difficult to route the air pipe that supplies air to the air cylinder. .

[0005] Further, since the work is pressed down while rotating the work by the rotating shaft and the teeth of the work are meshed with the plurality of positioning pieces, the work is pressed against the phase positioning piece, and the work of the work is pressed. Frequently, such as when the teeth are not smoothly meshed with the phase positioning pieces, the reliability is lacking, and even if indexing failure occurs, there is no means to detect this. There are also problems such as damage.

When the workpiece to be processed is changed,
Attachment conversion is performed according to the work. However, since the number of parts of the attachment is large, there is also a problem that a large amount of time is required for setup change and work efficiency is poor.

SUMMARY OF THE INVENTION The present invention has been made to solve such a conventional problem, and has as its object to provide a gear blank phase indexing apparatus capable of phase indexing different types of workpieces with a simple configuration. Things.

[0008]

In order to achieve the above object, an invention according to claim 1 is a work loading means provided on a work loading side of a processing machine for processing a work, and a work loading means for the work loading means. A work separating means provided on the downstream side and separating works which are continuously carried in by the work carrying means one by one; provided at an indexing position set between the work separating means and the processing machine; and Phase indexing means for performing phase indexing of the work by fitting into holes and teeth of the work, vertically movable pressing means for pressing the workpiece from above to the phase indexing means, and the phase indexing means And a rotation driving means for driving the rotation.

According to the above configuration, the structure of the indexing device main body is simplified, so that it is easy to manufacture and assemble, and the number of parts can be greatly reduced. When loaded, the posture is corrected to the horizontal position by the pressing means, and when the phase indexing means is rotated by the rotation driving means, the rotation of the work is suppressed by the pressing means. Can be fitted in a short time.

Further, since the center is determined by utilizing the hole of the work and the phase is determined by fitting the teeth of the work, the phase of the work can be accurately determined in a short time. It is highly reliable and versatile because it enables phase indexing regardless of the position of the tooth surface of the work.

According to a second aspect of the present invention, there is provided a workpiece loading means provided on a workpiece loading side of a processing machine for processing a workpiece, and a workpiece loading means provided downstream of the workpiece loading means. A work separating means for separating the works which are continuously carried in one by one, and an indexing position set between the work separating means and the processing machine, and fitted to holes and teeth of the work. By this, phase indexing means for performing phase indexing of the work, vertically movable pressing means for pressing the workpiece to the phase indexing means from above, rotation driving means for rotating the phase indexing means, Index detection means for detecting whether or not the phase of the work has been indexed by the phase indexing means.

According to the above configuration, the structure of the indexing device main body is simplified, the production and assembly are easy, and the number of parts can be greatly reduced. Therefore, the cost can be reduced, and the work is inclined to the indexing position. When loaded, the posture is corrected to the horizontal position by the pressing means, and when the phase indexing means is rotated by the rotation driving means, the rotation of the work is suppressed by the pressing means. Can be fitted in a short time.

Further, since the center is determined by utilizing the hole of the work, and the phase is determined by fitting to the teeth of the work, the phase of the work can be accurately determined in a short time. It is highly reliable and versatile because it enables phase indexing regardless of the position of the tooth surface of the work.

Further, when a phase index failure occurs,
Since the processing machine can be stopped in an emergency by the signal from the index detection means, it is possible to prevent damage to tools and dies caused by loading the workpiece upside down or loading different types of workpieces. Can be prevented.

In order to achieve the above object, the invention according to a third aspect of the present invention is to separate work pieces continuously carried in by a work carry-in means one by one by a work separating means and carry them into a phase indexing position. In a state in which the work is pressed against the phase indexing means by the pressing means provided above the phase indexing position, the phase indexing means is rotated by a predetermined angle by the rotation driving means, and the phase indexing means rotates the phase of the work. It is intended to be put out.

According to the above method, the phase index of the gear blank can be accurately determined by a simple structure, and the phase index is rotated by rotating the phase indexing means while pressing the work from above by the pressing means. Even when the workpiece is inclined, the phase of the workpiece can be indexed after correcting the attitude of the workpiece. This eliminates the inconvenience that the phase of the workpiece cannot be indexed because the attitude of the loaded workpiece is poor. be able to.

In order to achieve the above object, the invention according to claim 4 is characterized in that the index detecting means comprises a photoelectric switch for optically detecting a work.

According to the above configuration, the index detecting means can be provided at a low cost with a simple configuration.

In order to achieve the above object, the invention according to claim 5 is characterized in that the index detecting means comprises a detecting plate attached to the finger and a misgrip detecting means.

According to the above configuration, the existing misgrip detecting means can be used. Therefore, the index detecting means can be realized only by providing the finger with the detecting plate.

In order to achieve the above object, the invention according to claim 6 is such that the phase indexing means has an attachment structure and can be exchanged according to the type of work.

With the above configuration, when the type of the workpiece to be processed is changed, only the phase indexing means needs to be replaced, so that it is very economical as compared with the case of replacing the whole and the replacement time can be shortened. , Productivity also improves.

[0023]

Embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a front view of a phase indexing device for phase-determining a work composed of a bevel gear, FIG. 2 is an enlarged front view of a work loading means and a work separating device, FIG. 3 is a view from the Y direction in FIG. 3, and FIG. 5 is a view from the Z direction in FIG.

In FIG. 1, reference numeral 1 denotes a main body of a phase indexing apparatus, which is installed on the work loading side of a press 10 for sizing the work 2. On the upstream side of the main body 1, there are provided a work carrying means 3 composed of a conveyor and a work separating means 4 for separating the works 2 continuously carried in by the work carrying means 3 one by one.

The work separating means 4 has support frames 4a erected on both ends on the end side of the work carrying means 3.
A work transfer direction A is provided between the upper portions of the support frames 4a.
A pair of shutter cylinders 5 and 6 are installed before and after. The shutter cylinders 5 and 6 are, for example, air cylinders. An upstream shutter 7 is provided on a piston rod 5a protruding downward from the shutter cylinder 5 located on the upstream side, and a shutter cylinder 6 located on the downstream side. Downstream shutters 8 are detachably connected to the piston rod 6a projecting further downward.

The upstream shutter 7 of the upstream and downstream shutters 7 and 8 can be exchanged according to the type of the work 2. When the work 2 is a bevel gear, the upstream shutter 7 is upstream as shown in FIGS. The side shutter 7 is moved up and down by the shutter cylinder 5 slightly upstream from the center of the work separating means 4 and is divided into two paths by a tapered separating portion 7a.
Is inserted between the front and rear works 2 on the work transport means 3 from above so as to separate the front and rear works 2.

The downstream shutter 8 is formed in a plate shape and is located at the rear of the work separating means 4. While the work 7 is stopped, one work 2 flows to the work loading position B. A stopper 9 is provided at the work loading position B, and the work 2 conveyed from the work loading means 3 to the work loading position B is stopped at the work loading position B. The work 2 stopped at the work carry-in position is clamped by the transfer bar 12a of the transfer feeder 12 provided in the press 10 and carried into the main body 1 installed between the work carry-in means 4 and the press 10. It has become.

The main body 1 has a supporting member 1a having a lower end fixed to a bolster 10a provided in the press 10. The center of rotation is located above the supporting member 1a at the center of the indexing position C. A rotation driving means 13 such as a corresponding rotary actuator is provided. A fixed angle is provided on the upper part of the rotation driving means 13 by the rotation driving means 13,
For example, a rotating member 14 that is rotated by 45 ° is provided, and a phase indexing unit 15 that performs phase indexing of the work 2 is provided on the rotating member 14.

The phase indexing means 15 includes a rotating member 14
It has a detachable attachment structure for
A tapered projection 14 projecting from the center of the rotating member 14
By positioning and fitting a recess 15b formed on the bottom surface of the substrate 15a with a key (not shown), the center of the phase indexing means 15 can be matched with the center of the rotating member 14, On the upper surface of the substrate 15a, a positioning boss 15c that fits into the hole 2a opened in the center of the work 2 from below, and a pair of positioning pins 15d protrude at positions opposing the positioning boss 15c. The tip of the positioning boss 15c is
The tip of the positioning pin 15d is formed in a substantially hemispherical shape so as to be easily fitted into the valley between the teeth 2b of the workpiece 2 so as to be easily fitted into the workpiece a.

On the other hand, above the indexing position C, a pressing means 17 is fixed via a bracket 4c to a support frame 4b projecting from the work separating means 4 side. The pressing means 17 includes a fluid pressure cylinder 17a such as an air cylinder projecting the piston rod 17b downward, and a disc-shaped pressing member 17c fixed to the tip of the piston rod 17b of the fluid pressure cylinder 17a. Pressing the upper surface of the work 2 downward, the work 2 carried into the indexing position C
The posture is adjusted so that is horizontal.

In FIGS. 1 and 3, reference numeral 19 denotes an indexing position C.
By detecting the upper surface of the work 2 by index detection means including a pair of photoelectric switches installed before and after the work 2, whether the index of the work 2 is normally performed is detected.

In FIG. 1 and FIG.
A work which has been mounted on a die set 10b mounted on a bolster 10a and has been phase indexed at a phase indexing position C. 2 is carried into a working station (not shown) of the press 10 via the idle station I.

Next, the operation will be described with reference to the diagram shown in FIG. In FIG. 6, the curve (a) shows the slide motion of the press, and the curve (b) shows the motion of the transfer bar 12a provided in the press in the feed direction.

The work 2 to be sized by the press 10 is continuously fed by the work loading means 3 and reaches the upstream side of the work separation device 4 and is once stopped by the closed upstream shutter 7. The press 10 passes through the opened upstream shutter 7 in response to a signal from a rotary cam switch (not shown) of the press 10 and comes into contact with the closed downstream shutter 8 to be stopped. Next, when the work 2 stopped at the carry-in position B is clamped (curve C) by the transfer bar 12a, the upstream shutter 7 is first closed, and the work 2 is carried into the work separating means 4. The work 2 which has been stopped by the downstream shutter 8 is carried into the carry-in position B, and stopped at the carry-in position B by the stopper 9.

The work 2 carried into the indexing position C from the work carrying position B by the transfer bar 12a is
The hole 2a at the center is fitted from above into a positioning boss 15c protruding from the center of the phase indexing means 15. At this time, when the positions of the teeth 2b of the work 2 and the positioning pins 15d coincide, the teeth 2b are placed on the upper end of the positioning pins 15d.
If the positions of the positioning pins 15 coincide with each other,
The leading end of d is fitted, and the phase indexing has already been completed at this stage.

Next, a fluid pressure is supplied to the fluid pressure cylinder 17a of the pushing means 17 by a signal from the rotary cam switch, and the fluid pressure cylinder 17a lowers the pushing member 17c as shown in FIG. , Pressing member 17c
As a result, the upper surface of the work 2 is pressed downward. Thereby, when the hole 2a of the work 2 carried into the indexing position C does not fit into the positioning boss 15c and the work 2 is inclined, the posture is corrected so that the work 2 is horizontal.

Then, a rotation signal is sent from the rotary cam switch to the rotation driving means 13, and the rotation driving means 13 rotates the phase indexing means 15 by 45 °, so that the teeth 2b have been placed on the upper end of the positioning pin 15d. With the rotation of the work 2 placed, the positioning pin 15d is moved by the rotation.
b, the phase indexing means 15
The rotation of ° completes the phase indexing.

When the positioning pins 15d are fitted into the valleys, the work 2 descends to the position indicated by the imaginary line in FIG. If the index detection means 19 outputs a signal while the index confirmation signal (e) sent from the rotary cam switch is output, it is determined that the phase index of the work 2 has been normally performed. Judgment is made and the press 10 continues the operation as it is, but while the index confirmation signal (e) is being output, the index detecting means 1
If the signal is not output from 9, the index 2 is judged to be defective, and the press 10 is emergency-stopped, so that the workpiece 2 which has been loaded upside down and thus has a defective index is loaded into the press 10. In addition, breakage of tools, dies, and the like, which occur due to the loading of different types of works 2, can be prevented.

The work 2 for which phase indexing has been completed as described above is clamped again by the transfer bar 12a and conveyed to the idle station I.
And the pressing member 17c of the pressing means 17 is raised to its original position by a signal from the rotary cam switch as shown in FIG. The means 13 reverses the phase indexing means 15 by 45 ° as shown in FIG. 6G by a signal from the rotary cam switch, and returns the phase indexing means 15 to the original position.

By repeating the above operation, the work 2 separated one by one by the work separating means 4 is indexed at the indexing position C and is carried into the press 10. Indexing can be continuously performed in synchronization with the operation of the press 10.

In the above-described embodiment, the case where the bevel gear is sized by using the press 10 has been described. You can do it.

In the above embodiment, the work 2 for phase indexing is rotated by 45 °. However, the rotation angle may be any number as long as it is equal to or more than the angle of one tooth. Index detection means 19 such as a photoelectric switch
However, the lower surface of the work 2 may be detected in the same manner, or the finger 1 provided on the transfer bar 12a as shown in FIG.
2b is provided with a detection plate 12c which comes into contact with the upper surface of the work 2, and when the finger 12b clamps the work 2 for which the phase index has been completed, if there is an abnormality such as the work 2 being tilted, the existing mis-grip is detected. It may be detected by a means or the like.

[Brief description of the drawings]

FIG. 1 is a front view showing a gear blank phase positioning device according to an embodiment of the present invention.

FIG. 2 is an enlarged front view of a work carrying means and a work separating means constituting the gear blank phase positioning device according to the embodiment of the present invention.

FIG. 3 is an enlarged front view showing a main body of the gear blank phase positioning device according to the embodiment of the present invention.

FIG. 4 is a view as viewed from an arrow Y in FIG. 3;

FIG. 5 is an arrow view from the Z direction in FIG. 3;

FIG. 6 is a diagram showing the operation of the gear blank phase indexing device according to the embodiment of the present invention.

FIG. 7 is an explanatory view showing another embodiment of the index detecting means provided in the gear blank phase indexing apparatus according to the embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 2 ... Work 2a ... Hole 2b ... Tooth 3 ... Work carrying-in means 4 ... Work separating means 12 ... Transfer feeder 12a ... Transfer bar 12b ... Finger 12c ... Detection plate 13 ... Rotation driving means 14 ... Rotating member 15 ... Phase indexing means 17 ... Pressing means 19 ... Index detection means A ... Work transfer direction B ... Work carry-in position C ... Work index position.

Claims (6)

[Claims] 1. A work loading means 3 installed on a work loading side of a processing machine for processing a work, and a work provided downstream of the work loading means 3 and continuously loaded by the work loading means 3. A workpiece separating means 4 for separating workpieces 2 one by one, provided at an indexing position C set between the workpiece separating means 4 and the processing machine, and fitted into holes 2a and teeth 2b of the workpiece 2; A phase indexing means 15 for performing phase indexing of the work 2, a pressing means 17 capable of vertically moving the work 2 against the phase indexing means 15 from above, and a rotation for driving the phase indexing means 15 to rotate. A phase indexing device for a gear blank, comprising a driving means 13. 2. A work carrying means 3 installed on a work carry-in side of a processing machine for processing a work, and a work provided downstream of the work carry-in means 3 and continuously carried in by the work carry-in means 3. A workpiece separating means 4 for separating workpieces 2 one by one, provided at an indexing position C set between the workpiece separating means 4 and the processing machine, and fitted into holes 2a and teeth 2b of the workpiece 2; A phase indexing means 15 for performing phase indexing of the work 2, a pressing means 17 capable of vertically moving the work 2 against the phase indexing means 15 from above, and a rotation for driving the phase indexing means 15 to rotate. A phase determining device for a gear blank, comprising: a driving means (13); and an index detecting means (19) for detecting whether the phase of the work (2) is determined by the phase determining means (15). 3. The work 2 continuously carried in by the work carrying means 3 is separated one by one by the work separating means 4 and carried into the phase indexing position C, and is moved above the phase indexing position C. In a state where the work 2 is pressed against the phase indexing means 15 by the pressing means 17 provided, the rotation driving means 13
The phase indexing means 15 is rotated by a predetermined angle, and the phase indexing means 15 performs the phase indexing of the work 2. 4. A gear blank phase indexing device according to claim 2, wherein the indexing detecting means comprises a photoelectric switch for optically detecting the work. 5. The gear blank phase indexing device according to claim 2, wherein the indexing detecting means comprises a detecting plate mounted on the finger and a misgrip detecting means. 6. The gear blank phase indexing device according to claim 1, wherein the phase indexing means is changeable according to the type of the work.