JP2505534Y2 - Processing inspection device - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a processing inspection device for inspecting holes drilled by a machine tool such as a drilling machine.

[0002]

2. Description of the Related Art A conventional processing apparatus of this type is shown in FIG.
The processing inspection apparatus A includes a pedestal B mounted on the feeding unit C and moving back and forth along the feeding unit C, a plate D slidably attached to the pedestal B in the same direction as the forward / backward direction, and arranged on the front surface of the plate D. The rod-shaped detection body E is provided, and the sliding shaft F extending on the back surface of the plate D is slidably inserted into a part of the pedestal B. Further, a pushing spring G is provided on the sliding shaft F located between the plate D and the gantry B in a contracted manner, and urges the sliding shaft F away from the gantry B.

Explaining the inspection method of the processing inspection apparatus A, first, the pedestal B is turned toward the work W that has been perforated.
Is moved by a distance according to the drilling depth, and the detection body F is inserted into the processing hole H of the work W. When the depth of the processed hole H is insufficient, or when chips or the like remain in the processed hole H, the detection body F contacts the inner surface of the processed hole H or the chips. Therefore, the movement of the plate D is stopped. However, since the gantry B continues to move regardless of the stop of the plate D,
The pushing spring G is contracted, and the sliding shaft F starts sliding in the pedestal B. The rear end of the sliding shaft F comes into contact with the sensor I mounted on the pedestal B, and the sensor I operates to detect a machining defect in the machining hole H.

[0004]

[Problems to be Solved by the Present Invention] The above-described conventional machining inspection apparatus has the following problems. <A> The processing inspection apparatus A pushes the plate D in the direction of the work W by the restoring force of the push spring I that is contracted. In the case of defective processing, the restoring force of the push spring I is applied to the detection body F that is in contact with chips and the like. Since the restoring force of the push spring I increases in proportion to the amount of contraction, a large stress acts on the detection body F.

<B> As described above, when a large stress is applied to the detection body F, the detection body F is easily damaged. Detecting body F
When is damaged, the production line must be stopped and the detection body F must be replaced each time, so that the productivity of the work W decreases.

[0006]

The object of the present invention is to solve the above problems, and an object of the present invention is to prevent the damage of the detection body by pushing out the plate attached with the detection body with a constant pushing force. It is to provide a processing inspection device.

[0007]

[Means for Solving the Problems] That is, according to the present invention, a mount mounted on a feeding unit and installed so as to move back and forth, a plate support installed on the mount, and a slidable mount on the plate support. In a processing inspection device having a plate biased by a pushing force in the direction of the work and a detection body arranged in front of the plate, an extendable cylinder is arranged between the plate support and the plate, In the cylinder,
The processing inspection apparatus is provided with a relief circuit that constantly controls the pressing force applied to the plate regardless of the amount of expansion and contraction.

[0008]

Embodiment 1 An embodiment of the present invention will be described below with reference to the drawings. <B> Overall Configuration (FIG. 1) FIG. 1 shows a processing inspection device 10. The processing inspection device 10 is
A drilling tool is provided, and the drilling and inspection of the drilled hole are performed by the same device. A pedestal 30 installed so as to move back and forth along the feed unit 20, and a shaft head 40 placed on the gantry 30. , The support 50 attached to the shaft head 40, and the support 5
The inspection unit 60 supported by 0. Less than,
Other parts will be described in detail.

<B> Shaft Head (FIG. 1) The shaft head 40 is a known one in which a processing tool 41 for processing the workpiece 70 is installed in the front part and a motor 42 for driving the processing tool 41 is built in the rear part. Can be adopted.

<C> Support (FIG. 1, FIG. 2, FIG. 3) The support 50 is rotatably attached to the shaft head 40 about the horizontal lateral direction as shown in FIG. As shown in FIG. 2, a guide hole 52 for guiding the sliding shaft 62 of the inspection unit 60 is formed at the tip of the support body 50. A cylinder 51 is arranged above the support body 50. The cylinder 51 is a member for pushing out the inspection unit 60 with a constant pressure. Main body 511 of cylinder 51
Is installed at the tip of the support body 50 and is connected to the sliding portion 512 plate 61. The cylinder 51 is operated by a fluid pressure such as hydraulic pressure or air, and is connected with a pressure circuit 80 as shown in FIG. In FIG. 3, 81 and 82 are pressure control valves, 83 is a 4-port 2-position directional switching valve that switches the flow path, 84 is an air source, and 85 is a pilot type air operated regulator. 8
6 is a check valve. The pressure control valves 81 and 82 are for holding the inside of the cylinder 51 at a predetermined pressure, and the pressure inside the cylinder 51 can be changed by switching the direction switching valve 83. That is, the pressure in the cylinder 51 is changed to P1 or P2 (P1 <P by switching the direction switching valve 83).
It can be arbitrarily changed to 2). A sensor 53 is arranged on the support body 50. The sensor 53 has a guide hole 52.
The sliding shaft 61, which penetrates the inside, is disposed in contact with the rear end portion of the sliding shaft 61, and has a structure that operates when the sliding shaft 61 retracts.

<D> Inspection unit (FIGS. 1 and 2) The inspection unit 60 is constructed by extending the sliding shaft 62 in the penetrating direction of the back surface of the plate 61 and installing the detection rod 63 on the front surface of the plate 61. To be done. The inspection unit 60 is slidably attached to the support body 50 via a slide shaft 62, and has a cylinder 51.
The pushing force is urged in the direction of separating from the support body 50. A stopper 621 having an outer shape larger than the inner diameter of the guide hole 52 is installed at the rear end of the sliding shaft 62.
To prevent it from jumping forward.

[0012]

Next, the processing and inspection steps of the processing and inspection apparatus 10 of the present invention will be described. <A> Machining process (FIGS. 1 and 3) In the machining line of the work 70, a plurality of punching devices and inspection devices are arranged beside the transfer path of the work 70, and each device is used for punching and inspecting the work 70. To do. Then, the processing inspection device 10
When the workpiece 70 is transferred to the front of the processing inspection device 10,
As shown by the dotted line in FIG. 1, the plate support 40 of FIG.
Swing to the top of 0. Almost at the same time as this swing-up operation, the direction switching valve 83 of the pressure circuit 80 shown in FIG. 3 is operated to keep the pressure in the cylinder 51 at the high pressure P2. As a result, even if the total weight of the inspection unit 60 is added to the cylinder 51, the distance between the inspection unit 60 and the support body 50 can be maintained. Then, the processing tool 41 is rotated to advance the gantry 30 to a predetermined position, and in the state where the support body 50 is swung up, a processing hole 71 is drilled in the work 70.

<B> Inspecting step for normal processing (FIGS. 1, 2, and 3) When the workpiece 70 has been processed by the processing tool 41, the gantry 30 is retracted. Next, the support 50 is swung down as shown in FIG. 1, the direction switching valve 83 of the pressure circuit 80 is switched, and the pressure in the cylinder 51 is switched to the low pressure P1. This low pressure P
It is preferable that 1 is set to the minimum pressure at which the inspection unit 60 can be pushed out from the support 50 and isolated. And the pedestal 30
Is advanced to a position where the tip of the detection rod 63 is inserted into the inner part of the processed hole 71. If the machined hole 71 is machined normally, the detection rod 63 does not come into contact with anything and the sliding shaft 62 is guided by the guide hole 5.
Since sensor 2 does not slide, sensor 43 does not operate.

<C> Inspection process at the time of processing failure (FIGS. 1, 2, and 3) The processing hole 71 is caused by chips remaining in the processing hole 71 or the depth of the processing hole 71 being shallow. If is not processed normally, before the forward movement of the gantry 30 is stopped,
The tip of the detection rod 63 comes into contact with the chips or the inner surface in the processing hole 71. Then, the movement of the inspection unit 60 is prevented with respect to the forward movement of the gantry 30, that is, the support body 50, so that the sliding shaft 62 of the inspection unit 60 slides in the guide hole 52 of the support body 50. At the same time, the distance between the inspection unit 60 and the support body 50 approaches, and the cylinder 51 contracts. Since the internal pressure of the cylinder 51 is always kept constant by the pressure control valve 81, the pushing force of the cylinder 51 urging the inspection unit 60 is constant regardless of the contraction amount. Therefore, even if the cylinder 51 contracts, a large stress is not applied to the tip of the detection rod 63.
Therefore, when the defective work 70 is inspected, the detection rod 63 is not damaged by the pushing force of the cylinder 51.
Then, the sensor 53 senses the sliding operation of the sliding shaft 62 to detect a machining defect of the machining hole 71.

[0015]

Second Embodiment Instead of the detection rod 63 of the first embodiment, a detection nozzle 64 may be arranged on the front surface of the plate 61. The detection nozzle 64 is composed of a hollow tube whose both ends are open. Air is supplied from the plate 61 side, and the air is ejected from the opening at the tip. According to this embodiment, the chips remaining in the processed hole 71 can be eliminated simultaneously with the inspection of the processed hole 71.

[0016]

Third Embodiment Of course, the processing inspection apparatus 10 of the first embodiment can be adopted even if it is not equipped with a drilling machine. In this case, the shaft head 40 and the direction switching valve 83 for switching the flow path are not required.

[0017]

Since the present invention has been described above, the following effects can be obtained. <A> A cylinder is installed between the plate support and the plate, and the cylinder applies a pushing force to the plate on which the detector is installed. The internal pressure of this cylinder is kept constant by a pressure control valve. Therefore, the pushing force of the cylinder can be kept constant regardless of the contraction amount of the cylinder.

<B> When inspecting a workpiece, the cylinder contracts when the detection body comes into contact with the defective workpiece. Even if the cylinder contracts, since the internal pressure of the cylinder is kept constant, no large stress is applied to the detection body.
Therefore, it is possible to avoid damage to the detection body that occurs when the workpiece is defectively processed.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a processing inspection device.

FIG. 2 is an enlarged view near the plate support.

FIG. 3 is an explanatory diagram of a pressure circuit

FIG. 4 is an explanatory diagram of a conventional processing inspection device.

Claims (1)

(57) [Scope of utility model registration request] 1. A gantry mounted on a feed unit and installed so as to move back and forth, a plate support installed on the gantry, slidably mounted on the plate support and urged by a pushing force toward the work. In a processing inspection device having a plate and a detection body arranged on the front surface of the plate, an expandable cylinder is arranged between the plate support and the plate, and regardless of the expansion amount of the cylinder, A processing inspection device, which is provided with a relief circuit that constantly controls the pressing force applied to the plate.