JPS5828748Y2 - Coolant device for machine tools - Google Patents

Description

[Detailed description of the invention] The present invention is a shared machine tool that mainly uses pallets to attach workpieces to a common type jig, and selectively connects multiple spindle units to a power unit to cope with changes in workpieces. related to a coolant device.

For this type of machine tool, installing a pallet to a shared jig requires removal and loading/unloading work (hereinafter referred to as pallet setup changeover work), and installing a spindle unit to a power unit requires removing and loading/unloading work (hereinafter referred to as pallet setup changeover work). The coolant method, in which a distributor connected to the cutting oil supply source is placed at an appropriate location on the machine tool and oil is supplied to each machining location of the workpiece through the distributor's oil supply pipe, requires The piping tends to become an obstacle to the setup change work, and in order to eliminate this obstacle, a shared jig and a centralized lubrication system or shower lubrication system that supplies cutting oil from above the workpiece to the workpiece are adopted. However, there are cases in which cutting oil cannot be evenly supplied to all machining locations on the workpiece.

Therefore, the present invention aims to provide a coolant device that eliminates the above-mentioned drawbacks.

Below, one embodiment of the present invention will be explained with reference to the drawings.
In the figure, a spindle unit 4 is attached to the power unit 3 fixed to the feed unit 2 on both sides of the top surface of the machine base 1.
In addition, a common jig 5 installed at the center of the top surface of the machine 1
, the pallets 7 with the workpieces 6 set thereon are carried in and attached from the direction perpendicular to the plane of the paper, and the feed unit 2 and the common jig 5 are connected with a telescopic cover 8 to connect the feed unit 2 and the common jig 5. By coating the machine base between the tools 5, all the cutting oil supplied to the workpiece 6 is guided to the guide grooves 9 on both sides of the machine base 1, and the cutting oil in the guide grooves 9 is directed below the machine base 1. It is designed to be returned to the installed cutting oil tank 10.

The coolant pump 11 of the cutting oil pump 10 is connected via the riser pipe 12 to a horizontal pipe 13 installed horizontally above the power unit 3 and the shared jig 15. A parallel pipe 14 with a number of holes drilled in the lower surface is installed vertically through an on-off valve 15, and
Both ends of the horizontal pipe 13 are connected to a pipe joint 16 disposed at the front end of the upper surface of each power unit 3 by a flexible pipe 11.

On the other hand, as shown in FIGS. 2 and 3, the spindle unit 4 is connected to the power unit 3.
A pipe joint 18 is provided which is connected to the pipe joint 16 in a connected state, and a fuel supply pipe 19 is attached to this pipe joint 18 via an appropriate distributor (not shown). , so that the guide bush (not shown) of the bush plate 30 facing only the machining parts that cannot be sufficiently supplied with oil from the parallel pipe 14, and so that the piping does not interfere with the setup change work. It is placed along the spindle unit 4.

In this embodiment, as shown in FIGS. 4 and 5, in the pipe joint 16, a valve stem 21 fitted into a valve body 20 is pressed against a valve seat 23 by a spring 22, so that the valve stem 21 Hole 2
When the pipe fitting 18 inserted into the valve body 4 is pushed back, the through hole 25 of the pipe fitting 18 and the supply port 26 of the valve body 20 are connected to the hole 27.
, 28, which communicate through a spring chamber 29, and when the pipe fitting 18 separates from the pipe fitting 16, the valve stem 21 is pushed by the spring 22 and comes into contact with the valve seat 23, cutting off the communication between the hole 28 and the supply port 26. It has a structure.

Note that a known pipe joint such as a quick joint may be used as the pipe joint.

Since this embodiment has the above-mentioned configuration, all machining parts of the workpiece 6 attached to the shared jig 5 are connected to the parallel pipe 14 and the oil supply pipe 19 of the spindle unit 4 to compensate for the lack of supply from the parallel pipe 14. Therefore, a sufficient supply of cutting oil can be received.

Moreover, the parallel pipe 14 is located above the shared jig 5,
In addition, the flexible pipe 17 connected to the pipe joint 16 of the power unit 3 rises upward, and is located in a position unrelated to the setup change work of the pallet button and spindle unit. The number of oil supply pipes 19 that are arranged so as not to disturb the replacement work is limited, and the number of pipes is simple, which is beneficial for maintenance. When the spindle unit 4 is connected to the power unit 3, it is communicated through the pipe joint, so the setup change work of the pallet and spindle unit can be performed independently of the cutting oil pipe line, and therefore it is also possible to automate this type of change work. Helpful.

As explained above, the present invention is capable of reliably supplying cutting oil to all machining points of a wide variety of workpieces without interfering with the setup changes of pallets and spindle units. There are practical benefits that can be applied to mold machine tools to maximize their productivity.

[Brief explanation of the drawing]

FIG. 1 is a schematic front view of a machine tool equipped with a coolant device according to the present invention, and FIG. 2 is a side view showing a state in which pipe joints are connected when a spindle unit is attached to a power unit.
Figure 3 is a side view showing the pipe joint in a detached state when the spindle unit is removed from the power unit, Figures 4 and 5 show an example of the pipe joint, and Figure 4 is a side view showing the pipe joint in the connected state. FIG. 5 is a partially sectional side view showing a state in which the pipe joint is removed. DESCRIPTION OF SYMBOLS 1... Machine base, 2... Feeding unit, 3... Power unit, 4... Spindle unit, 5... Common jig, 6... Workpiece, 7... Pallet, 10...・
・Cutting oil tank, 11...Coolant pump, 12・
...rise pipe, 13...horizontal pipe, 14...parallel pipe,
15...Opening/closing valve, 16°18...Pipe fitting, 17...
・Flexible pipe, 19... Oil supply pipe, 20... Valve body, 2
1... Valve stem, 22... Spring, 26... Supply port, 30... Bush plate.

Claims (1)

[Scope of utility model registration request] In a machine tool coolant system in which multiple spindle units are selectively connected to a power unit, an oil supply pipe is opened above a jig for mounting a workpiece, and when a spindle unit is attached to the power unit, the spindle unit A pipe joint with a valve structure that circuits with a pipe joint provided in A coolant device for a machine tool, characterized in that the pipe joint of the spindle unit is opened on the tool tip side through the oil supply pipe.