JPH0617846U - Coolant supply device - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a small-sized and inexpensive coolant supply device capable of surely supplying coolant to a cutting tool in use. For a cutting device in which one spindle unit 3A of a plurality of spindle units 3 is indexed by turning of a turret 1 and locked by movement of the turret 1 toward a support frame 2 in a turning centerline direction Therefore, one of the connecting tools 7A of the automatic connecting tool 7 is attached to the support frame 2, the coolant supply means 17 connected to the connecting tool 7A is provided, and the connecting tool 7A is provided for each spindle unit 3 of the turret 1. The other connecting tool 7B, which is opposed to the spindle unit 3A at the indexing position and is connected or disconnected by the movement of the turret 1, is connected to the nozzle 6.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a coolant supply device that supplies coolant (cutting oil) to a cutting tool that is being used by the cutting device.

[0002]

[Prior art]

 Conventionally, there is a coolant supply device described in Japanese Utility Model Laid-Open No. 62-188344. In this coolant supply device, as shown in FIG. 4, a multi-spindle unit 31 provided with a plurality of spindle units 30 is provided on a support frame (not shown), and a central liquid reservoir 32 and a flow are provided in the multi-spindle unit 31. A connecting portion 34 that forms a passage 33 and communicates with the central liquid reservoir 32 via the passage 33 is provided on the outer peripheral portion of the multi-spindle unit 31, and a coolant supply means (not shown) connected to the connecting portion 34. On the other hand, a nozzle 35 having one end fixed to the central portion of the multi-spindle unit 31 and communicating with the central liquid reservoir 32 is provided for each spindle unit 30, and the cutting tool mounted on the spindle unit 30 by the nozzle 35. Coolant is supplied to 36.

[0003]

[Problems to be solved by the device]

 However, in the above-mentioned conventional coolant supply device, not only the drive mechanism 37 of the spindle unit 30 but also the central liquid reservoir 32 and the flow passage 33 are provided in the multi-spindle unit 31, and the flow passage 33 is complicated and the coolant is complicated. Since a sealing mechanism against leakage is required, the multi-spindle unit 31 becomes large in size, poor in manufacturability, and expensive. Further, it is necessary to flexibly connect the coolant supply means on the fixed side and the connection portion 34 on the movable side.

The present invention has been made to solve the above problems, and an object thereof is to provide a small-sized and inexpensive coolant supply device capable of surely supplying coolant to a cutting tool in use.

[0005]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, a coolant supply device according to the present invention is provided with a turret on a support frame so that the turret can swivel or move in a swivel centerline direction, and the turret is provided with a plurality of spindle units. One of the spindle units is for a cutting device which is indexed by the turning of the turret and is locked by the movement of the turret to the supporting frame side. An automatic connecting tool is configured on the supporting frame. One of the pair of connecting tools is attached, and the coolant supply means connected to the one connecting tool is provided, and the spindle unit is indexed to the one connecting tool for each spindle unit of the turret. Connect to the nozzle by providing the other connector facing each other in position and fitted or disconnected by the movement of the turret. It is intended.

[0006]

[Action]

 According to the above configuration, the spindle unit is indexed by turning the turret, and the other connecting tool on the turret side is arranged to face one connecting tool on the support frame side.

The swing lock of the turret is performed by moving the turret closer to the support frame side, and at the same time, the spindle unit is locked in the indexing position while the connecting operation of the automatic connecting device is performed and the turret side is locked. The other connecting tool is fitted into and held by one connecting tool on the support frame side. On the contrary, the swing lock of the turret is released by moving the turret away from the support frame side in the swing center line direction, and at the same time, the index lock of the spindle unit is released, while the automatic connection tool is released. The disconnecting operation is performed so that the other connector on the turret side is disengaged from the one connector on the support frame side.

The coolant supply is performed by driving the coolant supply means in the connected state of the automatic connection tool. The coolant from the coolant supply means is supplied to the cutting tool mounted on the predetermined spindle unit from a nozzle whose length, shape and flow rate are adjusted correspondingly.

[0009]

【Example】

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

FIG. 1 (1) is an enlarged cross-sectional view taken along the line EE in FIG. 2 showing a main part of the coolant supply device, (2) is a partially enlarged view of (1), and FIG. 2 is FIG. 1 (1). FIG. 3 is a front view of the coolant supply device shown in FIG. 3, and FIG. 3 is a left side view of FIG. In these figures, 1 is a turret, 2 is a supporting frame for a column, etc., 3 is a spindle unit, 4 is a cutting tool, 5 is a nozzle holder, 6 is a nozzle, and 7 is an automatic connecting tool.

The turret 1 is provided on the support frame 2 so as to be rotatable or movable in the direction of the centerline of rotation. The turret 1 is provided with a plurality of spindle units 3 for mounting cutting tools 4 at equal angles. One spindle unit 3A of the spindle units 3 is indexed by the turning of the turret 1 and locked by the movement of the turret 1 toward the support frame 2 in the turning center line direction. There is.

In such a cutting device, a nozzle holder 5 is provided for each spindle unit 3 of the turret 1, and the nozzle holder 5 has a nozzle 6 having a length corresponding to the length of the cutting tool 4. It is installed.

As will be described later, the automatic connecting tool 7 is composed of a pair of connecting tools 7A and 7B that are fitted and connected to each other, and are separated and automatically closed respectively.

One of the connectors 7A is formed in a tubular shape, and is attached to the support frame 2 via a bracket 8 so as to be movable in the direction of the turning center line of the turret 1. In order to urge the connecting tool 7A toward the turret 1, a flange 9 is formed on the outer peripheral portion of the tip of the connecting tool 7A, and a spring 10 is provided between the flange 9 and the bracket 8. In addition to being contracted, a retaining nut 11 that is brought into contact with the bracket 8 by being biased by the spring 10 is screwed onto the outer periphery of the base end portion of the connector 7A.

On the other hand, the other connecting tool 7B is formed in a tubular shape and is attached to the nozzle holder 5 so as to face the one connecting tool 7A at the indexing position P of the spindle unit 3A. It is connected to the nozzle 6 provided on the nozzle holder 5. On the inner peripheral surface of the tip portion of the connecting tool 7B, an annular recess 7a into which the tip portion of the connecting tool 7A is fitted, and on the inner peripheral surface facing the tip of the connecting tool 7A fitted in the recess portion 7a. An installation portion 7b is formed, and an O-ring 12 is fitted in the recess 7a.

Further, an annular valve seat 13 is formed in the tip portion of the one connecting tool 7 A, and a ball valve body 14 is seated on the valve seat 13 by a spring 15 and a check valve 16 is provided. At the same time, a pump device (not shown) forming a coolant supply means is connected to the base end portion of the connector 7A via a pipe 17.

On the other hand, an annular valve seat 18 is formed in the tip portion of the other connecting tool 7B, and a ball valve body 19 is seated on the valve seat 18 by a spring 20 for checking. A valve 21 is provided, the valve seat 18 is provided with a protrusion 22 to be inserted into the tip end portion of the one connection tool 7A, and the nozzle holder 5 is provided at the proximal end portion of the connection tool 7B. Is connected to the nozzle 6.

In the above structure, the spindle unit 3 is indexed by the turning of the turret 1, the predetermined spindle unit 3A is indexed to the indexing position P, and at the same time, the other connecting tool 7B on the turret 1 side is It is arranged so as to face one of the connectors 7A on the support frame 2 side.

The turning lock of the turret 1 is performed by moving the turret 1 closer to the support frame 2 side, and when the predetermined spindle unit 3A is locked at the indexing position P, the connecting operation of the automatic connecting device 7 is performed at the same time. Is done. In other words, by the movement of the turret 1 in the direction of the center line during the turning, one connecting tool 7A on the support frame 2 side is fitted into the recess 7a of the other connecting tool 7B on the turret 1 side, and the spring of the spring 10 is moved. The brim 9 is pressed against the tip of the other connecting tool 7B by force, and the O-ring 12 is sandwiched between the tip of the connecting tool 7A and the inner peripheral surface connecting portion 7b of the connecting tool 7B. While the fitting gap between the connectors 7A and 7B is sealed by the projections 22 provided on the connector 7B, the ball valve element 14 of the check valve 16 of the connector 7A is separated from the valve seat 13 and the check valve is closed. 16 opens.

The coolant supply is performed by driving the coolant supply means in the connected state of the automatic connection tool 7. The coolant from the coolant supply means is pressure-fed to the one connecting tool 7A via the pipe 17, and the pressure causes the ball valve element 19 of the check valve 21 in the other connecting tool 7B to overcome the spring force of the spring 20 so that the valve seat 18 And the check valve 21 opens. Therefore, the cutting tool 4 mounted on the predetermined spindle unit 3A is supplied from the nozzle 6 whose length, shape and flow rate are adjusted correspondingly.

The turning lock of the turret 1 is released by stopping the driving of the external coolant supply means and then moving the turret 1 away from the support frame 2 side, and the index lock of the spindle unit 3A is released. At the same time, the disconnecting operation of the automatic connecting device 7 is performed. That is, by moving the turret 1 in the direction of the turning center line, one connecting tool 7A on the support frame 2 side comes out from the recess 7a of the other connecting tool 7B on the turret 1 side, and is attached to the connecting tool 7B. The amount of pushing of the ball valve body 14 by the projection 22 gradually becomes smaller, and finally the ball valve body 14 is seated on the valve seat 13 by the bias of the spring 15 and the check valve 16 is closed. Further, before the disconnecting operation of the automatic connecting device 7, the ball valve element 19 of the check valve 21 in the other connecting device 7B is seated on the valve seat 18 by being biased by the spring 20, and the check valve 21 is closed. Therefore, there is no coolant leakage from the automatic connector 7.

[0022]

[Effect of device]

 As described above, according to the present invention, the turret is provided on the support frame so as to be rotatable or movable in the direction of the center line of rotation, and the turret is provided with a plurality of spindle units. One spindle unit of the spindle units can be rotated by the turret. It is for a cutting device which is indexed and locked by the movement of the turret to the side of the supporting frame, and one of the pair of connecting parts constituting the automatic connecting device is attached to the supporting frame, A coolant supply means connected to one of the connecting tools is provided, and at the same time, for each spindle unit of the turret, the one of the connecting tools is fitted to face each other at the indexing position of the spindle unit by the movement of the turret. Since the other connecting device that is connected or disconnected is provided to connect to the nozzle, the swing lock of the turret or the release of the lock can be achieved. It is possible to connect or disconnect the automatic connection tool by using the movement operation when the automatic connection tool is connected, and to drive the coolant supply means in the connected state of the automatic connection tool to cut the supply target mounted on the spindle unit. Coolant can be reliably supplied to the tool. Therefore, it is not necessary to provide a liquid reservoir or a flow path in the turret, and the coolant supply device can be made small and inexpensive.

[Brief description of drawings]

FIG. 1 is an enlarged sectional view taken along the line EE in FIG. 2 showing a main part of a coolant supply device according to an embodiment of the present invention. (2) It is a partially enlarged view of (1).

FIG. 2 is a front view of the coolant supply device shown in FIG.

FIG. 3 is a left side view of FIG.

FIG. 4 (1) is a partial cross-sectional view showing a conventional coolant supply device. (2) It is a left side view of (1).

[Explanation of symbols]

 1 Turret 2 Support frame 3, 3A Spindle unit 5 Nozzle holder 6 Nozzle 7 Automatic connection tool 7A One connection tool 7B Other connection tool 10 Spring (biasing means) 17 Piping (coolant supply means) P Fixed position

Claims (1)

[Scope of utility model registration request] 1. A support frame is provided with a turret capable of turning or moving in a direction of a turning center line, a plurality of spindle units is provided on the turret, and one of the spindle units is indexed by turning of the turret. Is for a cutting device that is locked by the movement of the turret to the support frame side, and one connecting tool of a pair of connecting tools that constitutes an automatic connecting tool is attached to the supporting frame, A coolant supply means connected to the connector is provided, and for each spindle unit of the turret, the one connector is opposed to the spindle unit at the indexing position of the spindle unit and is fitted or disconnected by the movement of the turret. A coolant supply device characterized in that the other connection tool provided is connected to the nozzle.