JPS5943075Y2 - Cutting oil supply device for machine tools - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a cutting oil supply device for a machine tool.

When cutting using a machine tool, it is necessary to apply cutting oil depending on the material of the workpiece.

Conventionally, in such cases, a cutting oil spouting nozzle installed on the machine body side, such as the underside of the spindle head, was bent by hand so that the cutting oil would spray onto the tool or the machining part.

In particular, in a five-sided machining machine tool equipped with an attachment, the operator has to change the direction of the nozzle each time the attachment is indexed and rotated in four directions around the main axis depending on the machining surface.

Also, if the attachment is large, the distance from the nozzle will be large, making it difficult to apply enough cutting oil to the necessary areas, and if the nozzle is long, it will interfere with machining when the attachment is not in use. there were.

In view of the above points, it is an object of the present invention to provide a cutting oil supply device that can receive and receive cutting oil from the machine body side no matter where the attachment is located.

An embodiment of the present invention will be described below with reference to FIGS. 1 to 5. On the lower surface 1aK of the spindle head 1, a clamp device 21 that raises and lowers four clamp pieces 20 using a cylinder (not shown), In a machine tool in which an attachment 2 is detachably and rotatably attached, four oil supply ports 4a, 4b are arranged at equal intervals on the outer periphery of the lower surface 1a of the spindle head 1 and are opened and closed by raising and lowering the plug 3; 4c, 4d, and a plug 3 of one of the supply ports 4a to 4d.
an oil socket 5 fixed to the case 2aK of the attachment 2 so as to be connected to the supply port 4aK by pressing upward;
The oil injection nozzle 8 is connected to the socket 5 via a vibro and is disposed on the tool mounting hole T side of the attachment 2.

In addition, each oil supply port 4a to 4dFi, the spindle head 1 as shown in Fig.
0 is formed in a supply body 9 protruding downward from the lower surface 1a.

The plug 3 also includes a disc-shaped base 11 that is vertically slidably fitted into the large-diameter holes 10 of the supply ports 4a to 4d, and a rectangular cross-section that is integrally formed at the center of the lower surface 11a of the base. A cutout 13 for oil passage is formed in the outer circumference of the base 11.

The plug 3 has a lower piece 12 connected to the supply ports 4a to 4.
The lower piece 1 protrudes from the lower end of d and the lower surface 11a of the base 11 is in contact with the lower surface 10aK of the large diameter hole 10, and the lower piece 1
2 is recessed into the supply ports 4a to 4dK and the lower surface 11a of the base 11
can be switched to a communication position B in which the position is spaced apart from the lower surface 10a of the large diameter hole portion 10.

A coil spring 14 is interposed between the upper surface 10b of the large diameter hole 10 and the upper surface 11b of the base 11 of the plug 3 for urging the plug 3 downward a.

In addition, 15 and 16 in the figure are seals attached to the lower surface 11a of the base 11 and the lower surface 9aK of the lower end wall of the supply ports 4a to 4d, respectively.

The housing socket 5 is bored in a socket 17 fixed to the case 2a of the attachment 2, and the diameter of the upper end surface 5a of the socket 5 is smaller than the horizontal width C of the lower piece 12. Ru.

The base ends 8a of the three nozzles 8 are fixed to a nozzle mount 18 as shown in FIG. 3, and the mount is fixed to the tool mounting side of the case 2a of the attachment 2.

The attachment 2 can be indexed, rotated and fixed around the main axis of the spindle head 1 in four directions forming an angle of 90 degrees to each other.

In addition, in FIGS. 1 and 2, 19 is the upper end flange of the attachment 2.

In the above configuration, the attachment 2 device C transports the attachment 2 from the transport device (not shown) K directly below the spindle head 1, and moves the flange 19 of the attachment 2 from between the clamp pieces 20 of the clamp device 21 into the spindle head 1. After that, the attachment 2 is rotated to engage the flange 19 with the clamp piece 20, and the attachment is raised by the cylinder.

At this time, the upper end surface 5a of the socket 5 of the attachment 2 comes into contact with the lower piece 12 of the plug 3 of one of the four supply ports 4a to 4d on the lower surface 1a of the spindle head.

When the attachment 2 is further raised, the lower piece 12 of the plug 30 is pushed up, and the plug 3 of the socket 5 and the supply port 4a is
It communicates with the upper surface 11b side.

When the attachment 2 finishes rising and is clamped, the lower end wall 9a of the supply port 4a and the upper end 45 of the socket 5
a are completely in contact with each other, and the supply port 4a and the socket 5 are connected.

In this state, from the oil tank (not shown) to the supply ports 4a to 4d.
When oil is supplied to the supply port 4a to the socket 5, the vibro
Cutting oil is ejected from the nozzle 8 through the nozzle mount 18.

The above operation can be repeated when indexing and rotating the attachment in another direction for machining other machining surfaces, and the operator can manually rotate the nozzle 8 in any of the four directions. Cutting oil can always be sprayed onto the tool without changing the direction.

When the plugs 3 of the supply ports 4a to 4d are not in use, the lower surface 11a of the base 11 is pressed against the lower surface 10a of the large diameter hole 10 by the coil spring 14, and the seal 15 and the lower surface 10a of the large diameter hole 10 are pressed together. Since they are in close contact, oil leaks will not occur.

As is clear from the above description, the present invention has oil supply ports that are arranged at equal intervals on the outer periphery of the lower surface of the spindle head and that open and close as the plug moves up and down, and the plug of one of the supply ports is suppressed. The oil inlet is fixed to the attachment so as to be raised and connected to the supply port, and the oil injection nozzle is connected to the inlet and disposed on the tool attachment port side of the attachment. .

Therefore, according to the present invention, cutting oil can be supplied from the machine body side no matter where the VC button is pressed during index rotation in four directions of the attachment, and the nozzle is also arranged on the tool mounting port side of the attachment. As a result, the nozzle always faces the tool side, which has excellent effects such as the operator not having to change its direction for each machining process.

[Brief explanation of drawings]

Fig. 1 is a front view of an attachment showing an embodiment of the present invention, and Fig. 2 is a view of the attachment, with the oil supply device and tools omitted, attached to the spindle head, looking up from direction D in Fig. 1. , Fig. 3 is a plan sectional view omitting the internal mechanism of the attachment, Fig. 4 is a sectional view showing the state of connection between the oil supply port and the socket, and Fig. 5 is a sectional view taken along line E-E in Fig. 4. . 1: Spindle head, 1a: Its lower surface, 2: Attachment, 3
Nib lug, 4a to 4d: oil supply port, 5: oil socket, 6: pipe, 7: tool attachment port, 8: oil injection nozzle.

Claims (1)

[Scope of utility model registration request] In a machine tool in which a lower surface 1aK attachment 2 of a spindle head 1 is detachably and rotatably attached, oil supply ports 4a are arranged at equal intervals on the outer periphery of the lower surface 1a of the spindle head 10 and are opened and closed by raising and lowering a plug 3; 4b, 4c, 4d and
The plug 3 of one of the supply ports 4a to 4d is pressed up and the oil socket 5 fixed to the attachment member 2 is connected to the supply port 4a. A cutting oil supply device for a machine tool, comprising an oil injection nozzle 8 connected to the tool mounting hole T side of the attachment 2.