JPH04193452A - Method and device for detachng hose for cutting fuild in machine tool - Google Patents

Abstract

PURPOSE:To execute the cutting off and connection of a hose quickly and automatically, by installing a coupling, and the nipple fixed with its insertion therein respectively to the end of a connecting hose, and inserting a sleeve. CONSTITUTION:On actuation of air cylinders 18A, 18B of a coupling holing plate 11, a sleeve holding plate 20 is pulled to the coupling holding plate 11 side, and the ball locking state by the sleeve 22 of a coupling 17 and nipple 16 is released. Then, the shaft center of the coupling 17 and that of the nipple 16 are aligned on the coaxis with a cutting tool post being moved to beams 7A, 7B side, and the nipple 16 is slowly inserted into the connection port 23 of the coupling 17. The cutting tool post is stopped where the nipple 16 is abutted and coming in completely, the sleeve holding plate 20 is extruded by actuating air cylinders 18A, 18B, and the coupling 17 and nipple 16 are fixed by a ball locking.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method and apparatus for automatically disconnecting and connecting a hose for supplying cutting fluid to a tool cutting edge of a machine tool.

[Conventional technology]

BACKGROUND ART During cutting with a machine tool, it is necessary to supply cutting fluid to the cutting tool such as a cutting tool for cooling, lubricating, reducing friction, etc. of the cutting tool.

Such injection of cutting fluid has conventionally been carried out by attaching an injection nozzle to the machine base of the machine tool and directing the tip of the injection nozzle toward the workpiece of the spindle.

[Problem to be solved by the invention]

However, with the above-mentioned cutting fluid supply means, depending on the shape and size of the workpiece, it may not be possible to supply the cutting fluid to the cutting edge of the tool at the actual cutting position. Regarding processing, there was a problem in that the cutting fluid could not be used effectively.

For this reason, in order to enable the cutting fluid injection nozzle to maintain its relative position in conjunction with the movement of the tool, a mechanism that integrates the injection nozzle and the tool holder has been considered, but when changing the tool, - Since the injection nozzle is also replaced at the same time, it is necessary to disconnect and connect the cutting fluid lines, and when performing such disconnecting and connecting operations manually, it is especially important to There is a problem in that a machine tool equipped with a mechanism for automatically changing a turret with multiple cutters attached to a mold becomes an obstacle when constructing an FA system.

Therefore, the present invention makes it possible to integrate a cutting fluid injection nozzle and a tool holder to increase the effectiveness of cutting fluid usage, and can be incorporated into an NC program, especially when a plurality of tools are installed in a tool rest. The object of the present invention is to provide a method for automatically disconnecting and connecting cutting fluid pipes suitable for performing intensive machining of a workpiece, and a device therefor.

[Means to solve the problem]

In order to solve the above problems, the present invention provides a method in which a coupling and a nipple to be inserted into the coupling are respectively attached to the ends of hoses to be connected, and the coupling is slidably fitted. A method and apparatus for separating and connecting the coupling and the nipple in a ball locking manner by combining the coupling with a sleeve that moves a ball disposed on the coupling, the method and the apparatus comprising either the coupling or the nipple. It is attached to a moving body of a machine tool, and the other side is temporarily fixed to a clamp device disposed within the movement range of the moving body, and the nipple is inserted into and removed from the coupling by the movement of the moving body, and the nipple is inserted into and removed from the coupling. A method for attaching and detaching a cutting fluid hose that locks or releases a ball lock by sliding the sleeve in conjunction with detachment, and furthermore, a dustproof cover that opens and closes the connection port is attached to each coupling, and the sleeve How to attach and detach a cutting fluid hose on a machine tool that opens and closes in conjunction with movement;
Alternatively, one of the nipple and the coupling may be fixed to a moving body of a machine tool via a holding body, and the other may be temporarily attached to a clamping device disposed within the operating range of the moving body via a holding body. The sleeve is fixed and configured to allow insertion and removal of the coupling by the movement of the moving body, and the sleeve is moved between the nipple and the sleeve by sliding with an actuator attached to the holder of the coupling via the sleeve holder. A cutting fluid hose attachment/detachment device for a machine tool configured to allow coupling to be disconnected and connected;
Or further, in conjunction with the movement of the sleeve holder,
The present invention proposes a cutting fluid hose attachment/detachment device in which a dustproof cover that opens and closes the connection port of each coupling with a protruding pin fixed to the camp ring holder is attached to the sleeve holder.

[Effect]

When connecting both hoses, place the moving body in the specified position,
The mating hose is preferably temporarily fixed to the clamping device via its holder. When an actuator such as a cylinder attached to the coupling holder in the moving body or clamping device is operated to move the sleeve holder, the ball lock state of the coupling by the sleeve is released, and the dust-proof cover rises to close the cup. The ring connection port is opened. Next, the moving body is operated to align the coupling axes of both hoses with the nipple axes, and then the nipple is inserted into the connection port of the coupling. After insertion, when the sleeve holder is returned, the coupling and nipple are fixed by a ball lock by the sleeve, both hoses are connected, and the communication port of the coupling that is not connected to the nipple is covered with a dustproof cover.

When disconnecting both hoses, the moving body is in a predetermined position with both hoses connected, so first move the movable body, move the holding body of the connected hose to the clamp device, and then disconnect it from the specified position. Temporarily fix in position. Next, by operating the actuator attached to the coupling holder and moving the sleeve holder, the ball lock state by the sleeve is released and the dustproof cover is opened.

Furthermore, after moving the moving body, pulling out the nipple from the coupling and returning it to a predetermined position, the actuator attached to the coupling holder is activated to return the sleeve holder, thereby closing the dustproof cover.

[Example] Hereinafter, an attachment/detachment device for a cutting fluid hose in a machine tool of the present invention will be described with reference to drawings showing examples.

Figure 1 is a side view of the main parts of a machine tool equipped with the cutting fluid hose attachment and detachment device of the present invention, Figure 2 is a plan view of the attachment and detachment device of Figure 1, and Figure 3 is a view of the attachment and detachment device of Figure 1. Main parts exploded perspective view, No. 4
The figure is a sectional view illustrating the ball lock situation in the attachment/detachment device of the present invention, and FIG. 5 is a side view of the attachment/detachment device of FIG. 1 in a hose connected state.

In Fig. 1, a machine stand 1 of an NC lathe is provided with a main shaft 3 that grips a workpiece 2, and a comb-shaped tool rest 4 that is capable of horizontal movement is arranged opposite to this main shaft 3. A plurality of (three in this embodiment) cutting tool holders 5 are fixed to this tool rest 4, and different types of cutting tools 6 are attached to each tool depending on the turning shape of the workpiece 2. In addition, in this NC lathe, two upper and lower beams 7A, which are parallel to the main shaft 3 and in the vicinity of the main shaft 3, that is, within the operating range of the tool post 4 which is a moving body,
7B is hung horizontally between the walls of machine stand 1, and the beams 7A above and below
, 7B constitutes a clamp device with a pair of upper and lower air cylinders 8A, 8B and positioning pins 9A, 9B.
The coupling holding plate 11 connecting the supply side hose 10 is temporarily fixed between the beams 7A and 7B, and the coupling and the nipple, that is, the hose It is designed to allow you to attach and detach the

Although only one set is shown in FIG. 2, the tool rest 4 is equipped with three sets of cutting tool holders 5, each of which is fitted with a cutting tool 6 according to the lathe shape of the workpiece. In addition, a nozzle holder 15 for holding a nozzle 14 for spraying cutting oil is attached to each hide holder 5, so that the cutting oil sprayed from each nozzle 14 can accurately hit the cutting edge 6a of the cutting tool. The nozzle 14 is fixed to. A ball locking nipple 16 is attached to the end of the receiving hose 12 connected to this nozzle 14, and each nipple 16 is held in parallel on one nipple holding plate 13.
This nipple holding plate 13 is fixed to the end of the tool rest 4.

On the other hand, couplings 17 for ball locking are attached to the outlet ends of the three supply hoses 10 from a cutting oil supply pump (not shown) as connecting devices, and as shown in FIG. The two coupling holding plates 11 are held in parallel with screws in alignment with the positions of the nipples 16 of the nipple holding plate 13. A step is provided on both wings of this coupling holding plate 11, and a pair of air cylinders 18A are provided as actuators for moving the sleeves.

18B is fixed, and this air cylinder 18A.

A sleeve retaining plate 20 is fixed to the tips of the piston rods 19A and 19B of 18B with nuts 21.

Three sleeves 22 are fixed in parallel to the sleeve holding plate 20 in alignment with the coupling 17.
This sleeve 22 fits around the outer periphery of the coupling 17,
Nipple 1 inserted into connection port 23 of coupling 17
The six ends are ball-locked. That is, as shown in FIG. 4, the nipple 16 has a concave groove 16a around its end, and the coupling 17 has a plurality of poles 24 at its end that are movable up and down and have a diameter larger than the wall thickness of the coupling 17. Furthermore, since the inner peripheral part of the sleeve 22 consists of a large-diameter part and a small-diameter part that is in close contact with the outer diameter of the coupling, and the boundary between the two is made of a taber, the connection port of the coupling 17 can be closed. Insert the nipple 16 into the inside of the coupling 17.
By aligning the position of the pawl 24 with the position of the concave groove 16a of the nipple 16, sliding the sleeve 22, and pressing the pawl 24 into the concave groove 16a of the nipple 16 to tighten it,
A ball lock between the coupling 17 and the nipple 16 can be achieved. Ball-lock type joint devices that are composed of such a combination of a coupling, a nipple, and a sleeve and have sufficient liquid sealing properties are commercially available.

Further, on the upper surface of the sleeve holding plate 20, a dustproof cover 25 whose tip part is hinged so that it can be moved up and down, that is, can be opened and closed, is attached to the upper surface of the sleeve holding plate 20 so that it can cover the connection port 23 of the coupling for each coupling 17. There is. On the other hand, the proximal end is fixed to the coupling holding plate 11, and the sleeve holding plate 2
A protruding pin 26 is provided that penetrates through the hole and has a tip that can come into contact with the dustproof cover 25 in the closed state.
When pulled to the side, it hits the protruding pin 26 and opens, and when the sleeve holding plate 20 returns to the front, it closes, covering the coupling that is not connected to the nipple 16, and preventing cutting debris from entering the connection port.

Connection between the coupling 17 of the cutting fluid supply hose 1o described above and the nipple 16 of the cutting fluid receiving hose 12.
As described above, the separation is performed by temporarily fixing the coupling holding plate 11 to which the sleeve holding plate 20 is attached by sandwiching it between the two beams 7A and 7B. That is,
Upper and lower beams 7A.

Positioning pins 9A and 9B for positioning the coupling holding plate 11 by locking it at the stepped corners of both wing parts are fixed to the facing surface of the upper and lower beams 7B.
, 7B is equipped with a pair of air cylinders 8A and 8B,
The piston rods 27A and 27B pass through the beams 7A and 7B, and their tips slightly protrude between the beams.
The piston rod is inserted into the locking recess 28 carved at the corresponding position of the camp ring holding plate 11 positioned as described above.
The protruding ends of 27A and 27B are fitted so that the coupling holding plate 11 can be temporarily fixed.

Next, a procedure for connecting the supply side hose 1o and the receiving side bow 12 will be explained.

As described above, the coupling holding plate 11 is connected to the beams 7A and 7.
Suppose that the operation is started from a state where the tool rest 4, which is temporarily fixed at a predetermined position between B and to which the nipple holding plate 13 is fixed, is at the origin of the machine coordinates. First, the coupling holding plate 11
When the air cylinders 18A and 18B are operated, the sleeve holding plate 2° is pulled toward the coupling holding plate 11, and the ball lock state between the coupling 17 and the nipple 16 by the sleeve 22 is released. At the same time, the dustproof covers 25 of each coupling 17 are pushed up by the protruding pins 26 of the coupling holding plate 11 to be in the open state.

Next, attach the tool rest 4 to the beam 7A.

7B side, align the axis of the coupling 17 and the axis of the nipple 16 coaxially, and slowly insert the nipple 16 into the connection port 23 of the coupling 17. When the nipple 16 abuts and is completely inserted, the tool rest 4 is stopped, the air cylinders 18A and 18B are operated, the sleeve holding plate 20 is pushed out, and the coupling 17 and the nipple 16 are fixed by a ball lock. At this time, the dustproof cover 25 is placed on the nipple holding plate 13 in an attempt to close, and the connection is completed as shown in FIG. 5. Also, for example, the tool rest 4 may lack a part of the tool holder 5, and therefore the nipple holding plate 1 connected to this may be removed.
When the nipple 16 of No. 3 is missing, the dustproof cover 25 closes the connection port 23 of the unconnected coupling 17.

After completing the connection, the air cylinders 8A and 7B of the beams 7A and 7B,
8B and its piston rods 27A, 27B
By pulling back, the temporary fixation of the coupling holding plate 11 can be released, and the tool rest 4 can engage in normal turning processing using the NC mechanism while holding the coupling holding plate 11. Note that the supply pump and the oil supply path are switched by sequence control linked to the NC mechanism, and the cutting oil is injected to the required cutting tool.

Next, a procedure for disconnecting the supply side hose 10 and the reception side hose 12 will be explained.

The tool rest 4 is located at the machine coordinate origin with the hose 10.12 connected as described above. First, the air cylinders 8A and 8B attached to the beam 7.7B are connected to the piston rods 27A and 2.
After pulling back 7B to the temporarily released state, move the tool rest 4, insert the coupling holding plate 11 held in a predetermined position between the beams 7A and 7B, and tighten the positioning pin 9A.

After determining the position with 9B, the air cylinder 8A.

8B is temporarily fixed between beams 7A and 7B. Next, by operating the air cylinders 18A and 18B of the coupling holding plate 11 to pull the sleeve holding plate 20, the sleeve 22
Release the ball lock state of the connecting part. At this time, the dustproof cover 25 is in an open state. Furthermore, the tool rest 4
is slowly moved backward while remaining in the axial direction of the coupling to pull out the nipple 16 from the coupling 17. After the nipple 16 is completely removed, move the tool rest 4 and return it to the machine coordinate origin, and then move the air cylinder 18A.

18B is activated to push back the sleeve retaining plate 20,
The dustproof cover 25 is closed to complete the separation.

The series of operations for connecting and disconnecting the hoses described above can be automatically performed by an NC program without human intervention while sequentially checking the operations using a sensor.

〔Effect of the invention〕

As is clear from the above description, according to the present invention, a coupling and a nipple to be inserted and fixed into the coupling are attached to the ends of the hoses to be connected, and a sleeve is fitted, and the ball is locked with one touch. Since the nipple is inserted into and removed from the coupling by a moving body of a machine tool, and the sleeve is moved in accordance with the insertion and removal of the nipple, the hose can be disconnected and connected quickly and automatically. Therefore, the obstacle of integrating the nozzle and tool holder is removed, and cutting fluid can be accurately poured onto the cutting edge of the tool that is automatically replaced.
Moreover, as a result, the effectiveness of using the cutting fluid can be increased.

Furthermore, by attaching a dustproof cover that opens and closes in conjunction with the sliding of the sleeve, it is possible to prevent chips from entering or adhering to the connection port of the coupling and interfering with automatic connection of the hoses. Furthermore, by incorporating this mechanism together with the automatic tool post exchange mechanism, it is possible to construct an FA production system.

[Brief explanation of the drawing]

Figure 1 is a side view of the main parts of a machine tool equipped with the cutting fluid hose attachment and detachment device of the present invention, Figure 2 is a plan view of the attachment and detachment device of Figure 1, and Figure 3 is a view of the attachment and detachment device of Figure 1. Main parts exploded perspective view, No. 4
The figure is a sectional view illustrating the ball lock situation in the attachment/detachment device of the present invention, and FIG. 5 is a side view of the attachment/detachment device of FIG. 1 in a hose connected state. 1... Machine base 2... Workpiece 3... Main spindle 4... Turret 5... Bit holder 6... Bit 6a... Bit tip 7A
, 7B... Beams 8A, 8B... Air cylinders 9A, 9B... Positioning pins 10... Supply side hose 11... Coupling holding plate 12... Receiving side hose 13... Nipple holding Plate 14... Nozzle 15... Nozzle holder 16... Nipple 16a... Concave groove 17...
・Couplings 18A, 18B...Air cylinders 19A, 19B...Piston rod 20...Sleeve retaining plate 21...Nut 22...
・Sleeve 23...Connection port 24...Ball 25...Dust-proof cover 26...Protruding pins 27A, 27B...Piston rod 28...Locking recess Patent applicant Nagano Prefecture Governor Yoshitaka Yoshimura Tube 4 Figure 5 Figure 2

Claims (1)

[Scope of Claims] (1) A coupling and a nipple to be inserted into the coupling are respectively attached to the ends of the hoses to be connected, and the coupling is slidably fitted and the cup A method for separating and connecting the coupling and the nipple using a ball lock method by combining a sleeve that moves a ball disposed on a ring, the method comprising: coupling or coupling the coupling or the nipple with a sleeve that moves a ball disposed on the ring; The nipple is attached to the body, and the other side is temporarily fixed to a clamp device disposed within the movement range of the moving body, and the nipple is inserted into and removed from the coupling by the movement of the moving body, and is linked to the insertion and removal. A method for attaching and detaching a cutting fluid hose in a machine tool, comprising locking or releasing the ball lock by sliding the sleeve. (2) A cutting fluid hose for a machine tool according to claim (1), wherein a dustproof cover for opening and closing the connection port is attached to each coupling, and is opened and closed in conjunction with the movement of the sleeve. How to put on and take off. (3) Attach a coupling and a nipple to be inserted into the coupling to the ends of the hoses to be connected, and also slidably insert the coupling and move the ball disposed in the coupling. A device for separating and connecting the coupling and the nipple in combination with a sleeve using a ball lock method, wherein either the nipple or the coupling is connected to a moving body of a machine tool via a holder. and the other is temporarily fixed to a clamp device disposed within the movement range of the moving body through a holding body, so that the nipple and the coupling can be inserted and removed by the movement of the moving body. A cutting fluid for a machine tool, characterized in that the sleeve is configured such that the nipple and the coupling can be separated and connected by sliding movement by an actuator attached to the holder of the coupling via the sleeve holder. Hose attachment/detachment device. (4) A dustproof cover is attached to the sleeve holder, which opens and closes the connection port of each coupling with a protruding pin fixed to the coupling holder in conjunction with the movement of the sleeve holder. The attachment/detachment device for a cutting fluid hose in a machine tool according to claim (3).