JPH0354830Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to a device for discharging coolant to the front surface of a turret head of a machine tool to cool the turret head.

[Conventional technology]

A common method for cooling the turret head of a machine tool is to provide a coolant nozzle on the stationary side facing the turret head, and cool the turret head by jetting tarant from the coolant nozzle toward the turret head.

[Problem that the invention attempts to solve]

Recent turning machine tools are required to have increasingly high precision, and reliable cooling of the turret head has become important as one of the ways to meet this demand.
Moreover, when using an exchangeable tool system that allows tools to be automatically attached to and removed from the turret head, heat is generated when opening and closing the attachment/detachment section or when using a rotating tool, and the conventional techniques described above, which lack reliability, do not have the desired cooling effect. This resulted in poor efficiency and was one of the factors that hindered high-precision machining. Therefore, in order to efficiently cool the turret head, a method of installing a device on the turret head side and discharging coolant has been desired.

The present invention was proposed in view of the above circumstances, and it is possible to reliably improve the cooling effect with a simple device.Furthermore, chips adhering to the turret head and replacement tools can be easily washed away, resulting in a long service life. The object of the present invention is to provide a cooling device for a turret head that allows long, high-precision machining.

[Means for solving problems]

In order to solve the above-mentioned problems, the present invention is a cooling device for a turret head of a turning machine tool that is equipped with a plurality of replaceable tools removably on the front side of the spindle. an arcuate cylinder provided in a fixed part on the turret head side along the turret head side and provided with a plurality of discharge ports toward the front surface of the turret head and each exchange tool, and the arcuate cylinder communicates with a coolant supply source to supply coolant to the cylinder. The cooling device for a turret head is characterized in that the turret head portion and each replacement tool are cooled by the coolant discharged from the arcuate cylinder.

[Effect]

The coolant supplied from the coolant supply source is constantly discharged to the turret head and the replacement tool through the flexible conduit from the plurality of discharge ports in the arcuate cylinder, cooling the turret head and the replacement tool, and further supplying the coolant to the turret head and the replacement tool. Wash away any adhering chips.

〔Example〕

Hereinafter, one embodiment of the present invention will be described in more detail based on the drawings.

Fig. 1 shows a front view of the turret head cooling system, Fig. 2 shows a partially sectional left side view of the same, and Fig. 3 shows a partially sectional right side view showing the positional relationship between the turret head and the headstock side. Show the diagram.

First, referring to FIG. 3, the positional relationship between the turret head and the headstock will be explained.

A plurality of replacement tools 2 are inserted into the outer periphery of the turret head 1 and held by a known quick holder 3, a ball 4, a disc spring 5, and the like. The interchangeable tools 2 are arranged radially and are indexed sequentially according to a schedule to perform processing.

A headstock 6 is provided at a position facing the turret head 1, and a chuck 7 is provided on the headstock 6, and a workpiece W is gripped by a claw 8. Then, the workpiece W is machined by rotating the chuck 7 and moving the turret head 1 and the exchangeable tool 2 in the Z-axis direction and the X-axis direction.

A bracket 9 to which a nozzle fixture 10 is fixed is screwed onto the upper part of the headstock 6. A coolant nozzle 11 that spouts coolant toward the replacement tool 2 is screwed onto the front of the nozzle fitting 10, and a hose 13 is inserted through a joint 12 at the rear to connect to a coolant supply source (not shown). It communicates with Coolant is thus pumped from a coolant supply by hose 13 into nozzle fitting 10 and is ejected from coolant nozzle 11 towards turret head 1 and replacement tool 2. The spouting of coolant by the coolant nozzle 11 is similar to the conventional method, but when used in combination with the present invention, the cooling effect is further improved.

Next, a cooling device for a turret head according to the present invention will be explained with reference to FIGS. 1 and 2.

As mentioned above, the turret head 1 on which the replacement tools 2 are mounted radially and the turret head cover 14 that partially shields the replacement tools 2 are attached to the body 1 of the machine tool.
It is fixed to 5. Then, on the inside of the front part of this turret head cover 14, there is also a
A pipe 16 bent into an arc shape along the outer peripheral edge of the turret head is welded to an extension of the front end.

Both ends of this arcuate pipe 16 are covered with end plates 17, 17, and a plurality of discharge ports 16a are perforated on the inner periphery to direct the coolant to the turret head 1 and replacement tool 2 during machine operation. is constantly discharged to cool the turret head 1 and the replacement tool 2.

Coolant is fed into the arcuate pipe 16 from the rear of the turret head 1 through a connecting pipe 18. An L-shaped joint 20 is fixed to the rear end of this connecting pipe 18.
A hose 21, which is a flexible conduit, is inserted into the tube 0 and communicates with a coolant supply source (not shown).

The operation of the turret head cooling device of the present invention constructed as described above will be explained.

Workpiece W gripped by chuck 7 on headstock 6 side
A replacement tool 2 inserted into the turret head 1 is indexed according to a schedule for machining. Machining is performed by rotating the chuck 7 and moving the turret head 1 in the X-axis and Z-axis directions.

On the other hand, coolant is supplied from the coolant supply source and further passes through the joint 20 from the hose 21.
It is fed into the connecting pipe 18 and then into the arcuate pipe 16. Coolant is then discharged toward the turret head 1 and the replacement tool 2 from a discharge port 16a bored inside the arcuate pipe 16. At the same time, coolant is also jetted toward the replacement tool 2 from a coolant nozzle 11 provided on the headstock side.

According to the present invention, the arc pipe is welded to the inside of the turret cover, and the turret head cover is fixed to the body, so even if the turret head is indexed one after another, there is no risk of interference with the piping, etc.
Coolant can now be discharged from the top of the turret head at all times, making it possible to not only cool the turret head and the replacement tool, but also to easily and reliably remove chips from the replacement tool being cut. Furthermore, since coolant is also jetted toward the replacement tool from the coolant nozzle provided on the headstock side, its cooling and chip removal effects are even greater.

[Effect of idea]

According to the present invention, coolant can be reliably discharged to the turret head and the replacement tool with a simple device that only requires attaching an arcuate pipe with an internal discharge port on the turret head side, resulting in a large cooling effect. It is also easy to wash away chips adhering to the turret head and replacement tools, and as a result, it has become possible to provide a turret head cooling device that has a long life and is capable of high-precision machining.

[Brief explanation of drawings]

Fig. 1 shows a front view showing the cooling device of the turret head, Fig. 2 shows a left side view of the same partially in section, and Fig. 3 shows a right side view of the same partially in section showing the positional relationship between the turret head and the headstock side. Show the diagram. 1...Turret head, 2...Replacement tool, 6...
... Headstock, 14 ... Turret head cover, 16
... Arc pipe (arc-shaped cylinder), 18 ... Connection pipe, 21 ... Hose (flexible conduit).

Claims (1)

[Scope of utility model registration request] In a cooling device for a turret head of a turning machine tool in which a plurality of replacement tools are removably installed on the front surface of the spindle side, the cooling device is provided at a fixed part on the turret head side along the outer periphery of the turret head that can be rotated and indexed. It consists of an arc-shaped cylinder with a plurality of discharge ports facing the tool, and a flexible conduit that communicates with a coolant supply source to supply coolant to the arc-shaped cylinder. A cooling device for a turret head, characterized in that it cools a turret head portion and each replacement tool.