JPH07100270B2 - Cutting hole finishing device of cutting machine with turret type tool changer - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to deburring of holes machined by a cutting machine equipped with a turret type tool changer for sequentially performing a plurality of processes including hole machining. The present invention relates to a device which is automatically operated in the as-is state.

2. Description of the Related Art Using a turret drilling machine, which is an example of a cutting machine of this type, for example, as shown in FIG. When drilling is performed to form a cross hole c that intersects with this at a right angle, burrs d may be formed at the intersection of both holes b and c, and cutting debris at the back end e of the cross hole c may easily accumulate. Therefore, it is necessary to remove burrs and remove cutting chips after processing is completed.

Conventionally, in order to remove the burr, filing, drilling with a drill, reamer, or brush, or shot blasting or electric discharge machining has been performed. Must be removed manually and either manually or using another finishing machine,
There was a drawback that production efficiency was poor because complicated work was forced. Further, the removal of cutting chips was also inefficient because high pressure air or the like was blown into the holes by hand.

Means for Solving the Problems As means for solving the above problems, in the cutting hole finishing device of the cutting machine with a turret type tool changing device of the present invention, one head is directed downward on the lower surface of the elevating part. In this case, a nozzle for deburring by advancing below the head and spraying high pressure water on the processing hole is provided.

Action and Effect of the Invention The present invention has the above-mentioned configuration, and when the processing of the work is completed,
Instead of the tool, the nozzle retracted to the retracted position advanced below the head, and high-pressure water was ejected toward the inside of the machining hole. The impact energy of the high-pressure water generated inside the machining hole. The burr is removed.

That is, according to the present invention, there is an effect that the deburring can be performed consistently after the processing while the work is placed on the cutting machine, and the work efficiency can be significantly improved.

Embodiment An embodiment of the present invention will be described below with reference to the accompanying drawings.

In the figure, reference numeral 1 is a known NC type turret drilling machine, in which eight heads 6 having a rotary drive shaft for a tool 8 are provided on the front surface of an elevating part 3 installed on a vertical part 2a of a main body frame 2. The turrets 5 provided at equal angular intervals are supported so as to be indexed and rotated about a shaft 7, and a tool 8 is attached to each of a maximum of seven heads 6 except at least one head 6 to face downward. It is designed to be processed by the tool 8 in the horizontal position, while the horizontal portion of the main body frame 2 is processed.
A main table 10 is freely attached to the XY2-axis movement control on 2b, and an index table 11 which is indexed and rotated around a horizontal axis 12 is attached to the upper surface of the main table 10 by a mounting plate 13. The workpiece a to be machined is fixed to the front surface of 11 by a jig (not shown), and the movement control of the main table 10 and the index table 11 are indexed by numerical control.
The machining parts of the work a are sequentially positioned immediately below the axis of the head 8 of the turret 5 facing downward, and the tools 8 are sequentially selected by the rotation of the turret 5, and the lowering part 3 or the turret 5 is moved downward. Holes are sequentially formed on the work a by the selected tool 8.

A machined hole finishing unit 15 is attached to the lower surface of the elevating part 3 described above, and this unit 15 is an air cylinder housed in a box 16 as shown in detail in FIG.
The front end of 18 is fixed to the center of the front plate 17 of the box 16, and the piston rod 19 protruding from the air cylinder 18
A mounting plate 20 is vertically attached to the tip of each of the pair of guide bars 22 projecting parallel to the piston rod 19 on both sides of the piston rod 19 on the rear surface of the mounting plate 20.
Is slidably inserted into the guide cylinder 23 attached to the front plate 17 of the box 16.

A block 25 for jetting high-pressure water is attached to the lower end of the back surface of the above-mentioned mounting plate 20, and three nozzles 26 are provided on the lower surface of the block 25 at regular intervals in the direction orthogonal to the advancing / retreating direction of the piston rod 19. Installed with each nozzle 26
Are respectively connected to three ports 27 formed on the side surface of the block 25 through passages (not shown) provided in the block 25, and each port 27 is connected to a high pressure pump (not shown) by a hose 28. 10 from each nozzle 26
It is designed to be able to eject high-pressure water of ~ 300 Kg / cm ² .
The three nozzles 26 have different ejection openings, and as shown in FIGS. 4 to 6, the first nozzle on the left side is provided.
26a is high-pressure water in a linear shape, second central nozzle 26b is high-pressure water with a slightly widened tip side, and third nozzle 26c on the right side is a conical high-pressure water with a further widened tip side. It is getting to each one.

The box 16 of the unit 15 is attached to the lower surface of the elevating part 3 via the attachment plate 30 as described above, and the forward movement of the piston rod 19 of the air cylinder 18 causes the block 25 to move to the position shown in FIG. As shown by the solid line in FIG. 2, the central second nozzle 26b is located on the axis of the downward head 6 of the turret 5, and the first and third nozzles 26a, 26c are advanced to the advancing positions located on both sides thereof. Also, piston rod 19
2, the block 25 is retracted to the retracted position so as not to interfere with the tool 8 attached to the head 6 of the turret 5 as shown by the chain line in FIG.

Next, the operation of this embodiment will be described.

During machining of work a, piston rod of air cylinder 18
Since the block 19 is retracted and the block 25 is retracted to the retracted position as shown by the chain line in FIG. 2, it does not hinder the tool exchange due to the rotation of the turret 5, and as described above, the main table 10 The work a is carried out while sequentially repeating the movement, the index table 11 indexing, and the tool 8 exchange.
The hole is drilled. In this embodiment, the through hole b and the intersecting hole c intersecting the through hole b at a right angle are formed in the same manner as described in the section of the prior art. In this case, a burr d is formed at the intersecting portion of both holes b, c, In addition, cutting debris accumulates at the inner end e of the cross hole c.

Therefore, when finishing the machining hole, first, the turret 5 is rotationally driven so that the head 6 without the tool 8 is oriented downward and the turret 5 is moved to the lowered position shown in FIGS. Then, the piston rod 19 of the air cylinder 18 is moved forward to move the block 25 to the advanced position. Then, by indexing the index table 11, the work a is placed in a posture in which the through hole b is oriented in the vertical direction as shown in FIG. 4, and the main table 10 is controlled to move so that the inner surface of the through hole b intersects. The opening side of the hole c should be located directly below the first nozzle 26a on the left side.
When the valve 6a is opened, linear high-pressure water is ejected into the through hole b, and the impact energy causes the burrs d protruding on the inner surface side of the through hole b to be stripped off. When the diameter of the through hole b is large, the main table 10 is moved little by little so that the linear high-pressure water has an arcuate locus along the inner surface of the through hole b on the side where the cross hole c is opened. It is effective to be able to spray with.

Next, as shown in FIG. 5, the index table 11 is indexed so that the cross hole c is opened to the upper surface, and the main table 10 is moved to move the cross hole c to the second position.
When the second nozzle 26b is opened immediately below the nozzle 26b, the high-pressure water with the tip side slightly expanded is formed at the inner end e of the cross hole c.
The shavings that have been ejected toward and are accumulated there are excavated and removed.

Finally, as shown in FIG. 6, the through hole b is again oriented vertically, and the through hole b is positioned immediately below the third nozzle 26c, and the conical high-pressure water is ejected from the third nozzle 26c. Then, the inner peripheral surface is cleaned from the through hole b to the intersecting hole c, whereby the finishing of the machined hole is completed. In the case of the last cleaning, the conical high-pressure water may be blown from the side of the cross hole c, or alternately from both sides.

That is, according to the present embodiment, with the work a attached to the turret drilling machine 1, deburring, removal of cutting debris, cleaning of the inner surface of the hole, and other finishing operations are performed consistently from a predetermined processing hole. Work efficiency is greatly improved.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view of an embodiment of the present invention, FIG. 2 is a partially cutaway side view thereof, and FIG. 3 is an enlarged perspective view of a partially cutout unit of a machined hole finishing unit thereof. FIG. 6 is a diagram for explaining the operation. 1: NC type turret drilling machine, 3: Lifting part, 5: Tray, 6: Head, 8: Tool, 18: Air cylinder, 19: Piston rod,
25: Block, 26a, 26b, 26c: Nozzle, a: Work

Claims (1)

[Claims] 1. A turret provided with a large number of heads equipped with a rotary drive shaft of a tool provided at equal angular intervals on a front surface of an elevating part installed in a vertical part of a main body frame so as to be index-rotated. In the cutting machine with a turret type tool changing device, a tool is attached to the head except for at least one of the heads, and cutting work including hole drilling is performed by the downward facing tool. A turret type tool provided with a nozzle for deburring on the lower surface of the portion when the above-mentioned one head is directed downward, by advancing below the head and spraying high-pressure water into a processing hole. Cutting hole finishing device for cutting machine with exchange device.