JP2638050B2 - Groove width inspection device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION The present invention relates to a groove width inspection apparatus that scans the groove width of a sintered product such as a rotor of a vane pump.

[Conventional technology]

Generally, for example, in a plurality of grooves formed on the outer periphery of a rotor of a vane pump, a vane is used by being fitted therein so that it can come and go, and as the rotor rotates in a cam ring,
It is required that the vanes smoothly come out of the grooves of the rotor. For this reason, it is necessary to inspect whether or not the groove of the rotor is formed with a predetermined width.

[Problems to be solved by the invention]

By the way, conventionally, the inspection of the width of the groove of the rotor was performed by an inspector using a gauge, so that workability was poor,
There was a problem that measurement took time.

The present invention has been made in view of the above circumstances, and an object of the present invention is to enable a smooth and quick inspection of a groove width of a sintered product such as a rotor of a vane pump to save labor, An object of the present invention is to provide a groove width inspection apparatus which can be automated and can improve the reliability of inspection.

[Means for solving the problem]

In order to achieve the above object, according to the present invention, a gauge body to be inserted into a groove of a sintered product is provided on a gauge support, and the gauge support is provided on a movable body so as to be movable within a predetermined range in a longitudinal direction thereof. And, between the gauge support and the movable body, a resilient member that pulls the gauge support backward is provided, and the movable body is moved along the longitudinal direction of the gauge support to the movable body. A moving mechanism for pushing the gauge body into the groove is provided.

Further, the gauge body has a V-shaped notch formed at a position facing both ends of the groove.

(Operation)

According to the invention of the present application, the moving mechanism advances the movable body toward the groove of the sintered product, advances the gauge body together with the gauge support body with the advancement of the movable body, and moves the gauge body to the sintered product. Force it to be inserted into the groove. Next, the movable body is pulled back by the moving mechanism, and the gauge body is pulled out of the groove of the sintered product by the resilient member via the gauge support.
In this case, when the groove of the sintered product is smaller than the predetermined value, the gauge body cannot be pulled out of the groove of the sintered product by the urging force of the resilient member, and the gauge body remains in the groove of the sintered product. .

〔Example〕

Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 to 7.

1 to 5 show the prerequisite technology of the groove width inspection apparatus of the present invention. In these figures, reference numeral 1 denotes a plate-shaped carbide gauge body. The gauge body 1 is attached to a U-shaped support portion 3 at the tip of a gauge support 2. That is, the gauge body 1 is fitted into the vertical grooves 4 formed on the pair of upper and lower ends of the support portion 3 and fixed by the pair of fixing members 5,
A rotary table 7 for mounting a vane pump rotor 6 having a plurality of grooves is disposed on the front side facing the gauge body 1. Also, the gauge support 2
The large-diameter portion 8 has the support portion 3 fixed to the distal end of the large-diameter portion 8 and fixed with mounting bolts 9. A small diameter portion 11 smaller in diameter than the spring mounting portion 10 was formed at the base end of the spring mounting portion 10, and a locking screw 12 was screwed into the large diameter portion 8, while a detection projection 13 was attached to the small diameter portion 11. Things. A hollow movable member 14 is loosely fitted around the large-diameter portion 8 of the gauge support 2 and the outer periphery of the spring mounting portion 10, and between the movable member 14 and the spring mounting portion 10. A coil spring (biasing member) 15 is mounted between the base end of the movable body 14 and the large diameter portion 8. Further, the movable part 14 includes:
A long hole 16 that engages with the locking screw 12 of the gauge support 2 is formed, and the gauge support 2 moves relative to the movable body 14 within a range in which the locking screw 12 can move within the long hole 16. Can be moved. A plurality of the movable bodies 14 (five in FIG. 2) are arranged side by side on a movable plate 17, and the movable plate 17 is
Is rotatably attached to the tip of the piston rod. Further, the air cylinder 18 is mounted on a base 19 so as to be vertically swingable, and the movable plate 17 is mounted on a pair of slide rails 20 arranged in parallel on the base 19. The movable portion 21 attached to the lower surface of the is slidably fitted. By moving the piston rod of the air cylinder 18 back and forth, the movable plate
The movable portion 21 of 17 moves along the slide rail 20 so that the movable plate 17 approaches and separates from the rotary table 7.

In addition, the detection projection 13
Is provided with a sensor 22 for detecting the movement of.

When inspecting the groove width of the vane pump rotor 6 using the groove width inspection device configured as described above, first,
With the rotor 6 placed on each turntable 7, the piston rod of the air cylinder 18 is advanced. As a result, the movable plate 17 attached to the tip of this piston rod is moved
By moving along 20, the movable table 14 approaches the rotary table 7, and accordingly, each movable body 14 on the movable plate 17 approaches each rotary table 7. For this reason, the gauge support 2 loosely fitted in the movable body 14 advances together with the movable body 14 while being urged forward by the coil spring 15, and is attached to the support portion 3 at the tip of the gauge support 2. The gauge body 1 moves toward the groove of the rotor 6 to be inspected.

When the gauge body 1 reaches the groove of the rotor 6 and the width of the groove is appropriate and there are few obstacles such as burrs in the groove, the gauge body 1 is moved by the forward urging force of the coil spring 15. It enters the groove of the rotor 6. When the obstacle such as a burr in the groove is larger than the urging force of the coil spring 15, or when the groove width is extremely narrow, the gauge body 1
Cannot smoothly enter the groove of the rotor 6, and
As the moving body 14 advances, the gauge body 1
The (gauge support 2) relatively retreats against the urging force of the coil spring 15. Then, when the predetermined distance gauge support 2 retreats with respect to the movable body 14, the detection protrusion 13 attached to the small diameter portion 11 is detected by the sensor 22, and the sensor 22 outputs a detection signal. The worker is notified of the groove abnormality.

When the inspection of one groove of the rotor 6 is completed in this way, the piston rod of the air cylinder 18 is retracted, and each movable body 14 is retracted together with the movable plate 17. As a result, as the movable body 14 retreats, the locking screw 12 of the large diameter portion 8 of the gauge support 2 comes into contact with the front end side of the elongated hole 16 of the movable body 14, so that the gauge support 2 is moved together with the movable body 14. The retraction starts, and the gauge body 1 is pulled out of the groove of the rotor 6. Next, each rotary table 7 is rotated by a predetermined angle to inspect the next groove. When the inspection of all the grooves of the rotor 6 is completed, a new rotor 6 is placed on each rotary table 7 instead of the inspected rotor 6, and the inspection of the grooves is restarted.

Next, an embodiment of the present invention will be described with reference to FIG. 6 and FIG. In the present embodiment, the same parts as those in the above-described base technology are denoted by the same reference numerals, and description thereof is omitted.

In the drawing, reference numeral 30 denotes a plate-shaped superhard gauge body, and a pair of upper and lower V for facilitating entry of the gauge body 30 into the groove of the rotor 6 is provided on a surface of the gauge body 30 facing the rotor 6. A letter-shaped notch 31 is formed. A U-shaped groove 32 is formed on each of the upper and lower surfaces of the gauge body 30, and the gauge body 30 is fitted into vertical grooves 34 formed at a pair of upper and lower ends of a support portion 33, respectively. It is fixed by inserting a pair of fixing members 35 into both U-shaped grooves 32 of the gauge body 30. Note that the inner side of the vertical groove 34 is configured to expand in a circular shape. In addition, the support portion 33
Is fixed to a distal end of a support main body 37 by a mounting bolt 36, a rod-shaped body 38 is attached to a base end of the support main body 37, and a sliding portion 39 is fixed to a lower surface of the support main body 37. The support portion 33, the mounting bolt 36, the support body 37, the rod 38 and the sliding portion 39 serve as a gauge support 40.
Is configured.

Further, the sliding portion 39 of the gauge support 40 is slidably fitted to a plurality of guide members 42 arranged in parallel on the movable plate 41 at appropriate intervals. And
A pair of stoppers on each side of each guide member 42
43 and 44 are arranged, and each of the sliding portions 39 is
It can move along the guide member 42 within the range between 3,44. Further, a screw member 46 is screwed to the L-shaped bracket 45 installed on the base end side of the movable plate 41, and between the screw member 46 and the base end of the rod 38, A spring (spring member) 47 for pulling back the gauge support 40 is connected. A sensor 48 for detecting the movement of the gauge support 40 is provided in the movement passage of the gauge support 40. Further, the movable plate 41 is configured to move back and forth by an air cylinder along a slide rail installed on a base similarly to the base technology shown in FIGS. 1 and 2.

When inspecting the groove width of the rotor 6 using the groove width inspection apparatus of one embodiment of the present invention configured as described above, similarly to the first embodiment, the groove width inspection apparatus is disposed on the front side of each gauge body 30. In a state where the rotors 6 are respectively mounted on the rotating tables which are arranged to face each other, the piston rod of the air cylinder is advanced. As a result, the movable plate 41 attached to the tip of the piston rod moves along the slide rail on the base to approach the rotary table. Accordingly, each guide member of the movable plate 41
The sliding portions 39 of the respective gauge supports 40 fitted into the guide members 42 advance to the rotary table side while being locked by rear stoppers 44 provided on both sides of each guide member 42, and The gauge body 30 at the tip of the body 40 also has the rotor 6 on each rotary table.
Approaching the groove.

When the gauge body 30 reaches the groove of the rotor 6,
Even if burrs are present in the groove and the groove width is narrow, these gauge bodies 30 are forcibly pushed into the groove of the rotor 6 by the pressing force of the air cylinder. And the obstacles such as burrs are eliminated.

Next, when the piston rod of the air cylinder is retracted, the movable plate 41 moves away from the rotary table side accordingly. In this case, the gauge support 40
Since the gage body 30 is fitted into the groove of the rotor 6, the gage body 30 is in a stopped state, and as the movable plate 41 retreats, the screw member 46 on the movable plate 41 and the gauge support
The spring 47 disposed between the base end of the 40 rods 38 is extended. When the biasing force of the spring 47 overcomes the frictional force between the gauge body 30 fitted in the groove of the rotor 6 and the groove, the gauge body 30
When the gauge support 40 is moved by the sensor 48, the worker is notified that the groove width of the rotor 6 is within a predetermined range.

When the groove width of the rotor 6 is small, the gauge body 30 cannot be pulled out from the groove of the rotor 6, and the gauge body 30 cannot be pulled out.
Is left in the groove of the rotor 6, so that it is easy to determine whether the groove of the rotor 6 is good or bad.

When the inspection of one groove width of each rotor 6 is completed in this way, each rotary table is rotated by a predetermined angle and the inspection of the next groove is performed in the same manner as the above-described base technology. When the inspection of all the grooves of the rotor 6 is completed, a new rotor 6 is placed on each rotary table in place of the inspected rotor 6, and the inspection of the grooves is restarted.

〔The invention's effect〕

As described above, in the present invention, a gauge body to be inserted into a groove of a sintered product is provided on a gauge support, and the gauge support is provided on a movable body movably within a predetermined range in a longitudinal direction thereof, and Between the gauge support and the movable body,
In addition to providing a resilient member that pulls the gauge support backward, the movable body is provided with a moving mechanism that moves the movable body along the longitudinal direction of the gauge support and pushes the gauge body into the groove. Therefore, the movable body is advanced toward the groove of the sintered product by the moving mechanism, and the gauge body is advanced together with the gauge support with the advance of the movable body,
By forcibly inserting the gauge body into the groove of the sintered product, obstacles such as burrs existing in the groove of the sintered product can be removed smoothly, and the movable body is pulled back by the moving mechanism, and By pulling out the gauge body from the groove of the sintered product through the gauge support by the emitting member, when the gauge body is pulled out of the groove of the sintered product, it is determined that the product is good, and the groove of the sintered product has a predetermined value. When the gauge body is not pulled out from the groove of the sintered product due to the biasing force of the resilient member, it is determined to be defective and the inspection of the groove width can be performed smoothly and quickly, thereby saving labor. In addition, automation can be achieved, and the reliability of inspection can be further improved.

Furthermore, by forming a V-shaped notch at a position opposite to both ends of the groove in the gauge body, obstacles such as burrs can be more smoothly eliminated, and entry into the groove is facilitated. Become.

[Brief description of the drawings]

1 to 5 show the prerequisite technology of the present invention.
1 is a front view, FIG. 2 is a plan view, and FIGS. 3 to 5 show examples of a gauge support portion. FIG. 3 is a plan view, FIG. 4 is a front view, and FIG. 6 and 7 show an embodiment of the present invention. FIG. 6 is a front view, and FIG. 7 is a plan view. 1 gauge body, 2 gauge support body, 6 rotor (sintered product), 14 movable body, 15 coil spring (biasing member), 18 air cylinder (moving mechanism), 30 ... gauge body, 40 gauge support body, 42 guide member (movable body), 43, 44 stopper, 47 spring (elastic member).

Claims (2)

(57) [Claims] 1. A gauge body to be inserted into a groove of a sintered product is provided on a gauge support, and the gauge support is provided on a movable body so as to be movable within a predetermined range in a longitudinal direction thereof. A resilient member is provided between the movable body and the movable body to pull back the gauge body inserted into the groove, and the movable body is moved along the longitudinal direction of the gauge support. A groove width inspection device, wherein a moving mechanism for pushing a gauge body into the groove is provided. 2. The groove width inspection device according to claim 1, wherein the gauge body has a V-shaped notch formed at a position facing both ends of the groove. apparatus.