JPH11822A - Phase indexing device for gear blank - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a gear-blank phase indexing device having a simple structure capable of phase indexing different kinds of workpieces. SOLUTION: This gear-blank phase indexing device is composed of a workpiece introducing means 3 installed at the workpiece introducing side of a cutting machine that processes a workpiece 2, a workpiece separating means 4 that is located at the downstream side of the workpiece introducing means 3 and separates each workpiece 2 from others being introduced successively by the workpiece introducing means 3, an indexing detection means 20 that is placed before an indexing position B located between the workpiece separating means 4 and the cutting machine and detects whether or not the phase indexing for the workpiece 2 introduced into the indexing position B has been completed, and a pusher 13 that is located at the indexing position B and rotates the workpiece 2 only if the indexing detection means 20 detects an indexing fault. If an indexing fault signal is still output even after the workpiece 2 is rotated by the pusher 13, the cutting machine is brought into an emergency stop as an abnormal condition. Hence, different kind of workpiece 2 can be dealt with only by replacing a positioning guide 12 and the pusher 13.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a phase indexing apparatus for a sizing gear blank.

[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. Japanese Patent Publication No. 5-39786 and Japanese Utility Model Publication No. 7-8104 are known.

The indexing device disclosed in the former publication has a rotary shaft on the slide side of the press that rotates as the slide is lowered, and a plurality of positioning pieces below the rotary shaft that engage with the teeth of the work to perform phase indexing of the work. 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.

The indexing device disclosed in the latter publication is configured to perform phase indexing of a workpiece by rotating a workpiece by a pusher mechanism while pressing a locating pin which is movable back and forth in the direction of the workpiece to be indexed. Have been.

[0005]

However, the indexing device disclosed in the former publication has a structure in which a spiral groove is provided on the rotating shaft to rotate the rotating shaft. Therefore, 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. .

When the work to be machined is changed, the attachment is converted according to the work. However, since the number of parts of the attachment is large, a large amount of time is required for the setup change, the work efficiency is low, and the gear blank must be replaced. Because a station for indexing is provided in the press,
Since the number of stations is increased, productivity is reduced, and it is difficult for an operator to approach the work separation device from the front of the press. Therefore, there are problems such as poor workability when replacing an attachment of the work separation device.

On the other hand, the indexing device disclosed in the latter publication is a device for determining the phase of a spur gear. Therefore, when determining the phase of, for example, a bevel gear of a different type, the entire device must be replaced, which is often used for setup work. It takes time, and equipment must be prepared for each type of gear.

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

[0009]

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 the works which are continuously carried in by the work carrying means one by one; and a work separating means provided before the indexing position set between the work separating means and the processing machine. Index detection means for detecting whether a work carried into the index position has been indexed, and a work provided only at the index position and when the index detection means detects an index defect. If the indexing failure signal is still output from the indexing detector even if the workpiece is rotated by the pusher that rotates the workpiece to perform phase indexing, The is a more configuration and control means for emergency stop.

According to the above configuration, the structure of the indexing device main body is simplified, so that the production and assembly are facilitated, and the number of parts can be greatly reduced.

Further, since there is no need to provide an indexing station in the processing machine, if the processing machine is a transfer press, the number of stations in the press is reduced by one, so that the transfer bar can be divided and carried out of the press. Since all the fingers can be carried out of the press, all the fingers can be exchanged by the external setup, and it becomes easier to approach the work separating means from the front side of the press. Attachment replacement can be easily performed.

Further, since the work is rotated by a pusher to perform position indexing only when indexing failure occurs in the work carried into the phase indexing position, all the workpieces are rotated by the pusher to perform phase indexing. If the indexing error signal is still output from the indexing detection means even if the work is rotated and the phase indexing is performed, this is regarded as abnormal. Since the processing machine is brought to an emergency stop, it is possible to prevent damage to tools, dies, and the like caused by a workpiece turned upside down or a different type of workpiece being carried into the processing machine.

In order to achieve the above object, the invention according to a second aspect of the present invention is directed to a work loading means provided on a work loading side of a processing machine for processing a workpiece, and a work loading means provided downstream of the work loading means. A work separating means for separating the works successively carried in one by one, and a work separating means provided before the indexing position set between the work separating means and the processing machine, and carried into the indexing position; Index detection means for detecting whether or not the work has been indexed; detachable positioning means for positioning and stopping the work at the index position; and indexing means provided at the index position and the index detection means A detachable pusher for rotating the work and performing phase indexing only when a defect is detected.

According to the above configuration, when the type of work is changed, it can be dealt with only by replacing the positioning guide and the pusher. Therefore, the setup time can be greatly reduced as compared with the case of replacing the entire conventional apparatus. become able to.

In order to achieve the above-mentioned object, the invention according to claim 3 is characterized in that the pusher is advanced by a pusher cylinder to rotate the work, and when the pusher is returned to the original position, the work is rotated again so that the work is rotated. This is to perform phase indexing.

With the above configuration, the phase of the work can be determined
The structure can be simplified by using a pusher that rotates the work and a pusher cylinder that drives the work, so that the structure can be simplified, and the work can be accurately performed by rotating the work when the pusher returns to perform the phase search. .

Even if the type of work changes, the phase of the work can be determined by the same control means, so that it is not necessary to change the control means for each work.

In order to achieve the above object, the invention according to a fourth aspect is characterized in that the work separating means comprises an upstream shutter and a downstream shutter provided before and after in the work transport direction, and these upstream and downstream shutters are processed. The work is separated by alternately opening and closing in synchronization with the operation of the machine.

According to the above configuration, the work continuously carried in by the work carrying means can be separated in synchronization with the working operation of the working machine, so that the working of the work can be performed efficiently.

In order to achieve the above object, the invention according to claim 5 is one in which the index detecting means 20 for detecting a phase index defect is constituted by a photoelectric switch.

With the above configuration, even if the type of work is changed, it can be dealt with only by adjusting the position.

[0022]

Embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a plan view of a phase indexing device for phase-determining a work composed of a bevel gear, FIG. 2 is a front view thereof, FIG. 3 is a plan view of a phase indexing device for phase-determining a work composed of a spur gear, and FIG. FIG. 5 is FIG.
6 is a circuit diagram, and FIG. 7 is a diagram showing the operation.

In these figures, reference numeral 1 denotes a main body of the phase indexing device, which is installed on a work loading side such as a press (not shown) for sizing the work 2. The main body 1
On the upstream side, a work carrying means 3 composed of a chain conveyor and a work separating means 4 for separating the works 2 continuously carried in by the work carrying means 3 one by one are provided.

The work separating means 4 has support frames 4a erected on both ends on the end side of the work loading 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 provided 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 stopping the work 2, one work 2 is caused to flow to the indexing position B.

As shown in FIG. 6, air is supplied to each of the shutter cylinders 5 and 6 from the air source 11 via solenoid valves 9 and 10 which are opened and closed by a signal taken out from a rotary cam switch (not shown) of the press. Is supplied and the shutter cylinders 5 and 6 are controlled in synchronization with the operation of the press, whereby the upstream shutter 7 and the downstream shutter 8 are alternately moved up and down to separate the work 2 and separate. The work 2 is transported to the indexing position B.

When the work 2 is a spur gear, the upstream shutter 7 is replaced with a one that moves up and down at the front of the work separating means 4 as shown in FIGS.

On the other hand, on both sides of the indexing position B, positioning guides 12 for positioning the work 2 carried into the indexing position B by the work carrying means 4 are provided.
A pusher 13 for stopping the work 2 at the indexing position is provided. Positioning guide 12 and pusher 13
Can be exchanged in accordance with the type of the work 2, and the portions in contact with the work 2 are curved along the curve of the work 2, and the fixing tool 14 is used to fix the frame 3 a of the work carrying means 3. It is detachably attached to.

The pusher 13 is provided with two fitting teeth 13b, which mesh with the teeth 2a of the work 2 and perform phase indexing of the work 2, on a reference surface 13a with which the outer peripheral surface of the work 2 abuts. And the base end is a pusher cylinder 1
5 is removably attached to the upper surface of a support member 16 fixed to the tip of the piston rod 15a by a fixing tool 17.
The pusher cylinder 15 has an axis centered in the workpiece transfer direction A.
The pusher 13 is attached to the frame 3a of the work loading means 3 so as to be orthogonal to the above, and the pusher 13 is moved in the work transfer direction A by air supplied through an electromagnetic valve 18 which is opened and closed by a signal from a rotary cam switch of the press. It is designed to reciprocate in an orthogonal direction.

In the drawing, reference numeral 20 denotes index detecting means comprising a pair of photoelectric switches installed between the work separating means 4 and the indexing position B. The outer peripheral surface of the work 2 carried into the indexing position B is a predetermined one. The position can be adjusted according to the type of the work 2 in order to detect whether the work 2 has been indexed based on whether the work 2 is at the position.

Next, the operation will be described with reference to the diagram shown in FIG. In FIG. 7, a curve (a) shows the slide motion of the press, and a curve (b) shows the motion of the transfer bar 22 provided in the press in the feed direction.

Work 2 to be sized by pressing
Is continuously fed by the work loading means 3, reaches the upstream side of the work separation device 4, is temporarily stopped by the closed upstream shutter 7, and then is opened by a signal from the rotary cam switch. The shutter passes through the side shutter 7 and contacts the closed downstream shutter 8 to be stopped. Next, when the work 2 that has already been indexed at the indexing position B is clamped (curve C) by the transfer bar 22, the upstream shutter 7 is first closed, and the work 2 is inserted into the work separating means 4. Is stopped, and then the downstream shutter 8 is opened. The work 2 which has been stopped by the downstream shutter 8 is carried into the indexing position B, and the reference surfaces of the positioning guide 12 and the pusher 13 are stopped. The indexing position is determined by 13a.

At this time, the teeth 2a of the work 2 are
If the indexing has already been completed by meshing with the more protruding fitting teeth 13b, since the space between the indexing detecting means 20 is not shielded by the work 2, the indexing detecting means 2
0, no indexing failure signal is output. However, if indexing failure occurs due to, for example, the peak of the teeth 2a of the work 2 hitting the tip of the fitting tooth 13b, the interval between the indexing detection means 20 is lost. Since the light is shielded by the work 2, an indexing failure signal is output from the indexing detecting means 20 within a certain range (d) of the rotary cam switch. The indexing failure signal is transmitted to the solenoid valve 1
8, the solenoid valve 18 is opened, and the air sent from the solenoid valve 18 pushes the pusher cylinder 15 to the pusher 13.
Is moved in a direction orthogonal to the workpiece transfer direction A, and the fitting teeth 13 b protruding from the pusher 13 are
The workpiece 2 is rotated clockwise while being engaged with the workpiece a.

When the downstream shutter 8 is closed while the pusher 13 is moving forward, and when the forward movement of the pusher 13 is completed, the pusher cylinder 15 causes the pusher 13 to move by the return signal (f) sent from the roller reclamation switch. At the same time, the work 2 is returned to the original position, and at this time, the fitting teeth 13b meshed with the teeth 2a of the work 2 rotate the work 2 in the counterclockwise direction to perform the phase index of the work 2.
Almost simultaneously, the upstream shutter 7 is opened, and the work 2 which has been stopped by the upstream shutter 7 is carried into the work separating means 4 and stopped by the downstream shutter 8.

By repeating the above operation, the work 2 separated one by one by the work separating means 4 and carried into the indexing position B is subjected to phase indexing by fitting teeth 13 b protruded from the pusher 13. After the operation is performed, it is clamped by the fingers 23 of the transfer bar 22 and is carried into the press, and sizing is performed by the press.

When the work 2 is turned upside down and carried into the indexing position B, or a different kind of work 2 is carried into the indexing position B, the work 2 is rotated by the pusher 13 to determine the phase. Is performed, the phase of the work 2 cannot be determined. Therefore, the work 2 continuously shuts off the space between the index detection means 20.

If the index detection signal is continuously output from the index detection means 20 when the index confirmation signal (e) is output from the rotary cam switch, the control means determines that this is abnormal. Judgment and emergency stop of the press make it possible to prevent damage to tools, dies, and the like caused when the work 2 turned upside down or a work 2 of a different type is carried into the press.

On the other hand, when the work 2 to be sized is changed from a bevel gear to a spur gear, for example, the upstream shutter 7 of the work separating means 4 and the positioning guide 12 and the pusher 13 on the main body 1 are shown in FIGS. Then, it is sufficient to replace the one shown in FIGS. 3 and 4 and adjust the position of the index detection means 20 according to the outer diameter of the work 2.
The setup time can be greatly reduced as compared with the case where the entire conventional device is replaced.

In the above-described embodiment, the press is used as the processing machine for sizing the work 2. However, the processing may be performed by a processing machine such as a machine tool.

[Brief description of the drawings]

FIG. 1 is a plan view showing a bevel gear phase indexing device according to an embodiment of the present invention.

FIG. 2 is a front view showing a bevel gear phase indexing device according to an embodiment of the present invention.

FIG. 3 is a plan view showing a spur gear phase indexing device according to an embodiment of the present invention.

FIG. 4 is a front view showing a spur gear phase indexing device according to an embodiment of the present invention.

FIG. 5 is a view as seen from the X direction in FIG. 4;

FIG. 6 is a circuit of a control system for controlling the gear blank phase indexing device according to the embodiment of the present invention.

FIG. 7 is a diagram showing the operation of the gear blank phase indexing device according to the embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Main body 2 ... Work 2a ... Teeth 3 ... Work loading means 3a ... Frame 4 ... Work separating means 4a ... Support frame 5, 6 ... Shutter cylinder 5a, 6a ... Piston rod 7 ... Upstream shutter 8 ... Downstream shutter 9, DESCRIPTION OF SYMBOLS 10 ... Solenoid valve 11 ... Air source 12 ... Positioning guide 13 ... Pusher 13a ... Reference surface 13b ... Fitting tooth 15 ... Pusher cylinder 15a ... Piston rod 16 ... Supporting member 17 ... Fixing tool 20 ... Index detection means 22 ... Transfer bar 23: Finger A: Work transfer direction B: Indexing position

Claims (5)

[Claims] 1. A work carrying means 3 installed on a work carrying side of a processing machine for processing a work 2, and a work carrying means 3 provided downstream of the work carrying means 3 and continuously carried in by the work carrying means 3. A work separating means 4 for separating the works 2 one by one; a work 2 provided before the indexing position B set between the work separating means 4 and the processing machine and carried into the indexing position B; Index detection means 20 for detecting whether or not the phase has been indexed; phase indexing by rotating the work 2 only when the index detection means 20 is provided at the indexing position B and the indexing detection means 20 detects an indexing defect; And a control means for causing an emergency stop of the processing machine as abnormal if the indexing failure signal is continuously output from the indexing detection means 20 even when the workpiece 2 is rotated by the pusher 13 A phase indexing device for a gear blank. 2. A work loading means 3 installed on a work loading side of a processing machine for processing a work 2, and a work loading means 3 provided downstream of the work loading means 3 and continuously loaded by the work loading means 3. A work separating means 4 for separating the works 2 one by one; a work 2 provided before the indexing position B set between the work separating means 4 and the processing machine and carried into the indexing position B; Indexing means 20 for detecting whether or not the phase has been indexed; and detachable positioning means 1 for positioning and stopping the work 2 at the indexing position B
2 and a removable pusher 13 provided at the indexing position B and rotating the work 2 to perform phase indexing only when the indexing detecting means 20 detects an indexing defect. Characteristic gear blank phase indexing device. 3. The pusher 1 has a pusher cylinder 15.
3 to move the work 2 and pusher 13
3. The gear blank phase indexing device according to claim 1, wherein the work 2 is rotated again when the gear is returned to the original position, and the phase of the work 2 is indexed. 4. An upstream shutter 7 and a downstream shutter 8 provided before and after the workpiece transport direction A.
By opening and closing the upper and lower shutters 7, 8 alternately in synchronization with the operation of the processing machine,
3. The method according to claim 1, wherein the work is separated.
A phase indexing device for a gear blank as described in the above. 5. The gear blank phase indexing device according to claim 1, wherein the indexing detecting means for detecting a phase indexing defect comprises a photoelectric switch.