JPH0435833A - Loader device for gear inspecting machine - Google Patents

Abstract

PURPOSE:To inspect a work, preventing a work hand from following downward, accompanied with the lowering of an ejector on the jig by locking a vertical floating mechanism installed in the elevation part of a work hand by a locking unit and fixing the work hand on the jig. CONSTITUTION:When a locking unit 20 and an operating rod 24 are locked by a locking member, a work hand 15 is position-fixed, and a hand hook 16 is opened. When the hand hook 16 is opened, an ejector on the first jig 37 lowers, and a work W is separated from the work hand 15 and chucked. Since the work hand 15 is fixed by the locking unit 20, the work hand 15 does not lower, together with the ejector, even if the ejector lowers. Then, the work W is revolved in the meshed state with a standard gear 38 set on the second jig 39, and the prescribed inspection for the gear meshing noise is started.

Description

DETAILED DESCRIPTION OF THE INVENTION a. Field of Industrial Application The present invention relates to a loader device for a gear inspection machine.

b. Conventional technology Conventionally, in order to inspect the gear meshing sound of a workpiece (final gear), which is a gear to be inspected, using a gear inspection machine, the workpiece is grasped and inspected by, for example, a work hand of a loader installed in the inspection machine body. Loading into position (loading, loading, etc.)
Then, open the hand claw of the work hand and place the work onto the jig.

Then, the workpiece and the reference gear (master gear) are rotated in a meshed state, and the distance between gear axes, etc. at this time is measured with an electronic micrometer, and after amplifying the output of the electronic micrometer with an amplifier, it is converted into digital data. Abnormalities such as tooth vibration and dents in the workpiece are detected by converting the signal into a digital signal using a device and comparing this digital signal with standard values for tooth vibration, dents, etc. For this reason, a hydraulic or pneumatic cylinder is directly connected to the elevating section of the work hand.

C0 Problem to be Solved by the Invention However, in the conventional loader device described above, the work hand is raised and lowered by a directly connected cylinder, so if there is a height difference between the loading position and the unloading position, the workpiece The workpiece could be damaged by dropping it from above, or by pressing the workhand against the jig or con-hair side and generating an unreasonable load. Furthermore, since it is difficult to bring the upper surface of the workpiece into close contact with the reference surface of the workhand, there is a high possibility that the workpiece will tilt during loading, and as a result, there is a risk that the workpiece cannot be reliably set on the jig.

On the other hand, it is possible to solve the above drawback by providing a slide @ mechanism that allows the work hand to float in the vertical direction, but even after loading and the hand claws of the work hand are opened, the reference plane between the work and the work hand remains unchanged. Since the contact state with the ejector is maintained, when setting the work on the jig, the work hand also follows downward by the slide mechanism as the ejector descends. Therefore, unless the work hand is moved from the loading position, the work cannot be rotated, which has the disadvantage of increasing the cycle time required for the gear meshing sound inspection process.

The present invention has been made in view of the above circumstances, and its purpose is to provide a loader device for a gear inspection machine that can eliminate the above-mentioned drawbacks.

d. Means for Solving the Problems In order to solve the problems of the prior art described above, in the present invention, a work hand that can be opened and closed is provided on a loader that grips a workpiece, which is a gear to be inspected, and loads it into an inspection position. , a vertical floating mechanism having a lock unit is provided in the elevating part of the work hand, and this vertical floating mechanism is locked by the lock unit, thereby fixing the work hand on a jig on which the work is installed. ing.

e. Function In the loader device of the gear inspection machine according to the present invention, the work hand is fixed on the jig by locking the vertical floating mechanism provided in the lifting section of the work hand with the lock unit. As the ejector on the jig descends, the work hand does not follow downward, and the work is detached from the work hand and can be inspected.

f. Examples The present invention will now be described in detail based on illustrated examples.

1 to 6 show an embodiment of a loader device for an automated gear inspection machine according to the present invention.

This gear inspection machine is a device for inspecting the gear meshing sound, etc. of a work W to be inspected (for example, a final gear), and the inspection machine main body 1 includes a loader 4 having a forward/backward movement mechanism 2 and an up/down floating mechanism 3. installed.

The forward and backward movement 41 m2 is achieved by a pair of front and rear stroke guides 5 fixed to the side surface of the inspection machine main body I, and a pair of front and rear slide rails 7 fixed to the mounting plate 6 and slidably engaged with the front and rear stroke guides 5. By driving this with a drive cylinder 8 via a rank 9 and a pinion 10, the loader 4 is moved in the longitudinal direction (
It is configured to be movable within a range of a longitudinal stroke l). In addition, the vertical floating machine #13 has a pair of vertical stroke guides 11 fixed to the mounting plate 6, and a pair of vertical slides fixed to the hand mounting plate 12 and slidably engaged with the vertical stroke guide 11. By driving this with a cylinder 14, the hand mounting plate 12 is configured to be movable in the vertical direction.

The loader 4 is a device that loads a work W, which has been positioned at a carry-in position and supplied by a carry-in device to be described later, to an inspection position, and has a lower end 12a of a hand mounting plate 12 with an openable and closable device for gripping the work W. A work hand I5 is provided. The work hand I5 is provided with a pair of hand claws 16, 16 arranged opposite to each other so as to be openable and closable. It is formed. Further, the inner wall surface of the gripping portion of the work hand 15 is provided with a gripped workpiece W.
A hand reference surface portion 17 is formed in close contact with the upper surface of the hand.

In addition, the loader 4 is provided with a turning mechanism 18, which allows the loader 4 to turn within a range of a turning stroke L around a turning axis I9. It is configured to be arranged in correspondence with the device and the unloading device.

The floating mechanism 3 is provided on the hand mounting plate 12 that constitutes the elevating section of the work hand 15, and includes the above-mentioned vertical stroke guide 11 and the vertical slide rail 1.
3 and the cylinder 14, a lock unit 20 is provided. The cylinder 14 is attached to the upper end of the mounting plate 6 via a support arm 21, and the cylinder 14 is provided with a retractable bushing rod 22. A lock unit 20 is connected to the tip of the bushing rod 22 via a connecting member 23. This lock unit 2
0, an actuating rod 24 that can move up and down is disposed through it, the upper end of the actuating rod 24 is attached to a plate 25, and the lower end is attached to the hand mounting plate 1 via a bracket 26.
It is attached to the top of 2. In addition, lock unit 2
A locking member (not shown) for locking the operating rod 24 is provided inside the hand mounting plate L2. The work hand 15 is fixed via the.

The plate 25 is attached so that it comes into contact with the mouthpiece unit 20 and moves up and down together with the mouthpiece unit 20 when the hand mounting plate 12 moves up and down.

On the other hand, around the inspection machine main body 1, a carry-in device 27 and a carry-out device 28 are arranged in association with the loader 4.

Carrying device 1'27 is installed on the front side of the inspection machine main body l,
A carry-in position (where a stopper 29 that can move up and down is provided)
The drive device 30 transports the workpiece W to be inspected at a predetermined interval to a passing workpiece delivery position).
It has a slat conveyor 31 for carrying in.

The carrying out device 28 is installed on the side of the inspection machine main body 1, and is used to transport the workpiece W after the inspection to the end opposite to the inspection machine main body 1, and is driven by a drive device (not shown). It is equipped with two discharge conveyors 32.3334. In other words, these carry-out conveyors include a first carry-out bucket conveyor 32 for carrying the accepted work-a, a second carry-out conveyor 33 for carrying the dented rejected work ← b, and a third carry-out conveyor for carrying the undone rejected work Wc. 34, which are arranged in parallel from the front side (lower side in Figure 1) in this order. However, the first
The carry-out conveyor 32 is arranged on the same plane as the carry-in conveyor 31 with a slide rail 35 in between, and on the first carry-out conveyor 732, there are a plurality of buckets 36 for storing accepted workpieces &4a. It is provided.

Further, at the inspection position of the inspection machine main body 1, a first jig 37 for installing the work W and a second jig 37 for installing the reference gear 38 are provided.
The first and second jigs 37 and 39 are used for the workpiece W or the reference gear 3, respectively.
A collet chatter 40.41 and a rotation center 42.43 are provided to rotatably hold the collet chatter 8.

Therefore, at the above inspection position, the workpiece W and the reference gear 3
When rotated with 8 in mesh, vibration is generated. This vibration is detected by a piezoelectric acceleration pickup attached to the bearing box (not shown), and the output signal is processed to determine whether there are any dents or unevenness. The structure is such that the magnitude of the sound can be determined, and the workpieces W, which are gears to be inspected, can be sorted into acceptable workpieces-a, rejected workpieces with dents-b, and rejected workpieces with dents-○.

Next, the operation of the loader device of the gear inspection machine will be explained.

First, by driving the carry-in conveyor 31 of the carry-in device 27, the workpiece W is transported to the carry-in position and positioned therein, and the loader 4 is advanced by the advancing/retreating mechanism 2 to be positioned above the carry-in position. In this state, when the cylinder 14 is operated to extend the bushing rod 22, the hunt mounting plate 12 is moved to the connecting member 23. Ronku Unisoto 20. It descends via plate 25 and actuating rod 24. At this time, the lock unit 20 and the actuation iron 24 are not fixed.

As the work hand 15 also descends as the hand mounting plate 12 descends, the hand reference surface portion 17 comes into close contact with the upper surface of the positioned workpiece W, and the lock unit 20
Even after the bottom stitching of the hunt mounting plate 12 has stopped, the bush opening of the cylinder 14 and the do 22 will go down until they reach the stroke end, and the plate 25 will separate from the lock unit 20 (see Figures 3 to 5). . Then, the hand claws 16 of the work hand 15 close and grip the work W.

After that, the cylinder 14 is operated and the bushing rod 2 is
2, the lock unit 7 20 rises and hits the separated plate 25 and rises together with it, so that the hand mounting plate 12 and the work hand 15 also rise via the actuation iron 24.

Next, the loader 4 is moved backward by the advancing/retreating mechanism 2 to load the work W into the inspection position of the inspection machine main body 1, and the work hand 15 is positioned on the first jig 37. In this state, the cylinder 14 is operated and the bushing rod 2 is
2, the work hand 15 descends as in the above operation, and the gripped work W is set on the first jig 37. When the lock unit 20 and the operating rod 24 are locked by a locking member (not shown), the work hand 15 is positioned and fixed, and then the hand claw 16 is opened. When the hand claw 16 opens, an ejector (not shown) on the first jig 37 is lowered, whereby the work W is separated from the work hand 15 and chucked. Since the work hand 15 is fixed by the lock unit 20, even if the ejector is lowered, it will not be lowered together with the ejector. The workpiece W is then rotated while meshing with the reference gear 38 set on the second jig 39, and inspection of a predetermined gear meshing sound is started.

During the inspection, the work hand 15 waits at the inspection position with the hand claw tool 6 open, and after the inspection is completed, the work hand 15 is immediately gripped by closing the hand claw 16.

Furthermore, the forward/backward moving mechanism 2, the vertical floating mechanism 3, or the turning mechanism 18 is driven according to the inspection results, and the loader 4 is moved forward/up/down or rotated to sort the work W.

That is, when the inspection result is acceptable, the loader 4 moves forward and delivers the accepted workpiece-a to the carry-out position of the carry-in device 27. Along with this, the stopper 29 operates downward and the carry-in conveyor 31 is driven. The accepted workpiece-a is transferred to the first delivery conveyor 3 via the slide rail 36.
2 (7) It falls into the bucket 36 and is stored therein, and is transported to a predetermined position by the first unloading conveyor 32.

On the other hand, if the inspection result is a failure, the loader 4 rotates 180 degrees clockwise and delivers the failure workpiece-C to the delivery position of the third delivery conveyor 34 (the state shown in FIG. 1). Along with this, the unloading device 2B is driven, and the rejected work pieces are conveyed to a predetermined position 1 by the 3'IIi output conveyor 34. In addition, if the inspection result is a dent rejection, the loader 4 rotates 180 degrees clockwise and moves forward, and the dent rejection workpiece wb is transferred to the second conveyor conveyor 3.
In conjunction with this, the unloading device 28 is driven, and the rejected work-b with dents is transported to a predetermined position by the second IIl unloading conveyor 33.

Although one embodiment of the present invention has been described above, the present invention is not limited to the embodiment described above, and various modifications and changes can be made based on the technical idea of the present invention.

g. Effects of the invention As mentioned above, the gear inspection machine loader device according to the present invention has the following features:
A loader that grips a work and loads it into an inspection position is provided with a work hand that can be opened and closed, and a vertical floating mechanism having a lock unit is provided in the elevating part of the work hand, and this vertical floating mechanism is locked by the lock unit. Since the work hand is fixed on the jig, even if there are variations in the height position where the work is set, there is no possibility of the work being dropped from above or being pressed with an unreasonable load. This prevents damage to the workpiece. In addition, in the loader device of the present invention, the top surface of the workpiece and the reference surface of the work hand can be brought into close contact with each other by the vertical floating mechanism, so the workpiece does not fall all the way during loading, and the workpiece is reliably centered on the jig. This allows for accurate gear meshing sound inspection. Furthermore, with the loader device of the present invention, the work hand does not need to be moved from the jig.
Inspection can be performed simply by opening the work hand when setting the work on the jig, and therefore the cycle time of the inspection process can be greatly shortened. Moreover, when inspecting workpieces with different thicknesses, there is no need to change setups (therefore, work efficiency can be improved).

[Brief explanation of the drawing]

Figures 1 to 6 show one embodiment of the present invention, - Figure 1 is a plan view of the entire gear inspection machine, Figure 2 is its front view, and Figure 3 shows the vicinity of the work hand. Figure 4 is an enlarged plan view, Figure 4 is a side view of the work hand gripping a workpiece, Figure 5 is an enlarged front view of the vicinity of the lock unit of the floating mechanism, and Figure 6 is an enlarged view of the vicinity of the cylinder of the floating mechanism. It is a front view. 23... Connection member, 25... Plate, 37... First jig,

Claims (1)

[Claims] A loader that grips a workpiece, which is a gear to be inspected, and loads it into an inspection position is provided with a work hand that can be opened and closed, and a vertical floating mechanism with a lock unit is provided on the elevating part of the work hand, and this vertical floating mechanism is connected to a lock unit. A loader device for a gear inspection machine, characterized in that the work hand is fixed on a jig on which the work is placed by locking the work hand at the jig.