KR20110071263A - Assembly for supplying coolant - Google Patents

Abstract

PURPOSE: A cutting-oil supply assembly is provided to enable cutting oil to be immediately supplied after blocking of the cutting oil since in a state a pipe for the cutting oil is open, a certain amount of cutting oil remains in the inner pipe of a cutting-oil block. CONSTITUTION: A cutting-oil supply assembly comprises a cutting-oil block(130), which is fastened to one side of a tool post. The cutting-oil block comprises an inlet port(132), a pipe(134), an outlet port, a cutting-oil nozzle(140). The inlet port is connected to the cutting-oil supply pipe of the tool post. The cutting oil is provided through the inlet port. The pipe is formed in the cutting-oil block. The outlet port is formed on the opposite side of the inlet port. The head(142) of the cutting-oil nozzle is fastened to turret to open/close the pipe.

Description

Coolant Supply Assembly {Assembly for supplying coolant}

The present invention relates to a coolant supply assembly, and more specifically, to a turret having a plurality of tools and a coolant block which is added to a coupling structure of a tool post for transmitting power to the turret and delivers coolant supplied through the tool post to the turret side. It relates to a cutting oil supply assembly of a machine tool comprising a.

Machines used for the purpose of processing metal or non-metallic materials into shapes and dimensions by using a suitable tool or adding more precise processing to semi-materials by various cutting or non-cutting methods are often called machine tools. In particular, among these machine tools, a machine tool in which chips are generated during a machining process is called a cutting machine tool, and a non-cut machine tool in which chips are not generated during a machining process is called a metal machine.

These cutting machine tools are rapidly progressing in automation and numerical control (NC) throughout the industry. Recently, the numerical control (NC) of machine tools, which have been divided into rotary lathe and milling series, is combined with each other. It has evolved into a multifunctional machining center, and its market is rapidly expanding thanks to the wide demand of industrial sites.

On the other hand, the turning center includes a main spindle for driving rotation, a chuck positioned at the front end of the main spindle to chuck the workpiece, and a tool post having a chucking cylinder and a workpiece machining tip positioned at the rear end of the main spindle to operate the chuck. do.

For example, a tool post may be connected to a turret equipped with multiple tools to transmit power to the turret, thereby exchanging tools through the rotation of the turret to process the workpiece into various shapes and dimensions.

Such a conventional tool post may supply coolant from the toll post 20 to the turret 10 through the coolant block 30 structure as shown in FIGS. 1 and 2.

As shown in FIG. 1, the tool post 20 is formed with a coolant conduit 22 through which coolant flows from the outside, which flows through the coolant block 30 and the tool holder 12 of the turret 10 and the turret. Is delivered to the conduit 14 formed in the part.

The conventional cutting oil block 30 has a conduit 34 connecting the inlet 32 connected to the tool post 20 side and the outlet connected to the turret 10 side, and a valve in the conduit 34 A cutting oil nozzle 40 having a nozzle head 42 serving as a role is formed, and a tip 44 of the cutting oil nozzle 40 is connected to the turret 10 to supply cutting oil.

Referring to FIG. 2, when the tool post 20 is connected to the turret 10, that is, when the lower end of the coolant block 30 is coupled to the turret 10, the coolant is cut by the surface of the turret 10. The tip 44 of the nozzle 40 is pressurized to raise the cutting oil nozzle 40. At this time, the cutting oil flows from the tool post 20 to the turret 10 by opening the conduit 34 blocked by the nozzle head 40. Can be delivered.

On the contrary, in a situation in which the tool post 20 is separated from the turret 10, the spring 46 formed at the upper end of the nozzle head 40 acts to move the coolant nozzle downward, thereby providing a conduit in the coolant block 30. 34 is blocked at the point P adjacent the head by the nozzle head 42 to prevent unnecessary cutting oil leakage.

As such, the conventional cutting oil block 30 can open and close the cutting oil nozzle based on whether the turret and the tool post are fastened, and thus, the cutting oil can be prevented from unnecessarily flowing down or leaking when the turret is mounted or replaced.

In addition, since the coolant supply itself can be determined by operating the coolant supply on / off switch that controls the coolant pump that pumps coolant, it is necessary to turn off the coolant supply switch and then perform a necessary process after turning off the coolant supply switch. Could prevent.

However, in the state where the turret is mounted, that is, the coolant nozzle is pressed by the turret and the pipeline 34 in the coolant block is opened (see FIG. 2), a step of replacing or waiting for a workpiece to be processed is required. In this case, in the conventional structure, the coolant supply has to be restarted by performing a necessary step after turning off the coolant supply switch and then turning on the coolant supply switch again.

In this case, since the cutting process is resumed in the absence of the cutting oil in the cutting oil block 30, the processing is performed without supply of cutting oil at the beginning of the cutting process, or after waiting for a predetermined time to prevent the cutting process, the cutting process must be resumed. There was a problem.

In addition to the configuration of opening and closing the conduit 34 in the coolant block 30 by using the head 44 of the coolant nozzle, this requires an additional opening and closing means (for example, a valve). It caused a problem to be arranged near the nozzle 40 of 30).

If an additional opening and closing means is formed, a separate driving force must be provided together to drive it, which causes a problem that complicates the structure of the coolant block and makes the manufacturing of the coolant block difficult.

The coolant supply assembly according to the present invention provides a means for opening and closing the conduit in the coolant block without requiring a separate driving force, so that a certain amount of coolant is always present in the coolant block even when the coolant is coupled to the turret and the coolant supply is blocked. It is to be configured to remain.

In addition, the coolant supply assembly according to the present invention, in the state coupled with the turret, that is, the head of the coolant nozzle is open to the coolant pipeline, immediately cuts the cutting process even after waiting for a predetermined time with the coolant supply cut off from the coolant source. It is intended to be configured to be resumed.

In order to achieve this object, the present invention provides a cutting oil of a vertical lathe including a turret 10 having a tool holder 12 to which various tools are mounted, and a tool post 20 fastened to the turret to transmit power. A supply assembly, the cutting oil block 130 is fastened to one side of the tool post 20 to supply the cutting oil (C) to the turret 10, the cutting oil block is the cutting oil of the tool post 20 An inlet 132 connected to the supply pipe 22 to receive cutting oil; A conduit line 134 formed inside the cutting oil block; An outlet formed on the opposite side of the inlet; And a coolant nozzle 140 formed on a conduit facing the outlet and including a head 142 that opens and closes the conduit 134 according to whether the turret 10 is fastened. In this case, the conduit 134 is formed downward along the direction of gravity at a point P adjacent to the head to the cutting oil nozzle 140 along the direction in which the cutting oil C in the conduit 134 is opposed to gravity. A cutting oil supply assembly is disclosed which is guided.

In addition, the cutting oil supply assembly according to the present invention is characterized in that the inlet 132 of the cutting oil block 130 is formed at a relatively lower position than the nozzle head 142.

In addition, the coolant supply assembly according to the present invention, when the supply of the cutting oil (C) is stopped while the tool post 20 is coupled to the turret 10, the cutting oil block 130 of the pipeline The cutting oil C is always remaining in the portion from the inlet 132 to the point P adjacent to the nozzle head 142.

Specific details of other embodiments are included in the detailed description and the drawings.

In the cutting oil supply assembly according to the present invention, the tool post and the turret are coupled to each other so that a certain amount of cutting oil C remains in the conduit 34 in the cutting oil block at all times even when the cutting oil conduit 34 is opened. The coolant can be supplied to the cutting process immediately after the coolant supply is cut off and resumed again.

The coolant supply assembly according to the present invention replaces and positions a workpiece while preventing the leakage of coolant through an open pipeline without removing the turret and using only control means such as a coolant supply switch to cut off the coolant supply. Make necessary adjustments such as adjustments.

Advantages and features of the present invention, and methods for achieving them will be apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings.

Like reference numerals refer to like elements throughout.

Hereinafter, features of the present invention will be described in detail with reference to FIGS. 3 to 5.

3 is an exemplary view showing an example of a cutting oil supply apparatus according to the present invention. According to FIG. 3, the coolant block 130 according to the present invention has an inlet 132 connected to the tool post 120 side and a conduit 134 connecting the outlet connected to the turret 110 side therein. In the conduit 134, a coolant nozzle 140 having a nozzle head 142 serving as a valve is formed, and a tip 144 of the coolant nozzle 140 is connected to the turret 110 to supply coolant. Has a structure. Typically, the coolant block 130 includes an upper block 136 and a lower block to implement the coolant nozzle 140 including the conduit 134, the spring 146, and the nozzle head 142 in the coolant block 130. It is common to make two parts of (138) and then join them. In addition, the cutting oil block 130 according to the present invention can implement the features of the present invention by limiting the shape of the conduit 134 formed therein to a specific shape as follows.

For example, as shown in FIG. 3, an inlet 132 is formed below the nozzle head 142 with respect to the direction of gravity, and a conduit 134 from this duct inlet 132 to a portion P adjacent to the nozzle head. ), And especially near the portion P adjacent to the nozzle head, the conduit 134 is formed downward along the direction of gravity, so that the coolant C in the conduit 134 is in a direction opposite to gravity-that is, FIG. 3. It is characterized in that it flows upward based on the guided to the cutting oil nozzle 140.

As such, the conduit 134 is formed downward in the vicinity of the nozzle head 142 serving as a valve in the cutting oil block 130, so that an external force that overcomes gravity and flows to the nozzle head side naturally does not work. The coolant may remain in the conduit while maintaining a constant level.

3, if the tool post 20 is connected to the turret 10, that is, the lower end of the coolant block 130 is coupled to the turret 10, the surface of the turret 10 The tip 144 of the cutting oil nozzle 140 is pressed to raise the cutting oil nozzle 140. At this time, the cutting oil is released from the tool post 20 by opening the conduit 134 blocked by the nozzle head 140. ) Can be delivered. At this time, a sealing means such as a sealing ring 148 is interposed between the cutting oil nozzle 140 and the conduit 134 to prevent leakage of the cutting oil.

As described above, in the situation where the tool post 20 is separated from the turret 10, the spring 146 formed at the top of the nozzle head 140 acts to move the coolant nozzle downward, thereby cutting the coolant block 130. The inner conduit 134 is blocked at the point P adjacent to the head by the nozzle head 142 to prevent unnecessary leakage of cutting oil.

Next, the features of the present invention will be described with reference to FIGS. 4 and 5.

First, FIG. 4 is a state in which cutting oil is continuously supplied while the cutting oil supply switch is turned on (for example, operation of the cutting oil pump) while coupled to the turret and the pipeline 134 is opened. In this case, as in the prior art, the coolant is supplied from the source to the coolant block 130 through the tool post, and is transferred to the turret side through the coolant nozzle 140 along the open conduit 134. At this time, the pipeline 134 is formed downward at the point P adjacent to the head 142 of the cutting oil nozzle 140, so that the flow of the cutting oil C is interrupted by gravity, but this is the cutting oil C Since it can be easily overcome by the supply pressure (eg, the pumping pressure) of, the cutting oil can be supplied irrespective of the specific shape of the pipeline.

Next, FIG. 5 is a state in which the coolant supply switch is turned off (for example, the stop of the coolant pump) when the coolant is coupled to the turret and the pipeline 134 is opened. In this case, unlike the related art, the cutting oil in the cutting oil block may maintain the cutting oil in the cutting oil block as it is when the supply of cutting oil is stopped from the pump. That is, the coolant that has already passed through the nozzle head 142 at that point flows to the turret side through an open conduit (i.e., the tip of the coolant nozzle), but moves downward near the point P adjacent to the nozzle head 142. The cutting oil C 'in the pipeline remains in the cutting oil block 130 while maintaining the water level L at that time. This is because the cutting oil does not receive the pressure necessary to pass through the nozzle head 142 above the water level L. In other words, the cutting oil C 'remains in the conduit 134 by gravity.

As such, even when the conduit 134 in the coolant block 130 is opened (that is, in a state where the turret is coupled to the tool post), when the coolant supply from the coolant supply source is stopped, a certain amount of coolant is stored in the coolant block 130. It becomes possible to maintain the state in which (C ') remains.

This frees up the necessary work, such as changing the position of the workpiece or replacing the workpiece, without removing the turret, where the coolant is no longer flowing and is retained in the coolant block, so that cutting operations are carried out immediately after performing the required work. Even if it resumes, it provides the advantage that the supply of cutting oil can be made smoothly.

Although the embodiments of the present invention have been described above with reference to the accompanying drawings, those skilled in the art to which the present invention pertains can understand that the present invention can be implemented in other specific forms without changing the technical spirit or essential features. will be.

Therefore, the embodiments described above are to be understood as illustrative and not restrictive in all respects, and the scope of the present invention is represented by the following detailed description, and the meaning and scope of the claims and All changes or modifications derived from the equivalent concept should be interpreted as being included in the scope of the present invention.

Cutting oil supply assembly of the machine tool according to an embodiment of the present invention employs a cutting oil block having a valve that is opened and closed by the coupling of the turret, the necessary work such as replacement or position adjustment of the workpiece without leakage of cutting oil in the turret mounting state Can be used in machine tools for freely carrying out

1 is an exemplary view for explaining a conventional cutting oil supply device;

2 is a cross-sectional view showing a coolant supply device in a state in which a pipeline is blocked due to separation of a turret;

3 is a cross-sectional view showing a cutting oil supply apparatus according to an embodiment of the present invention;

4 is an exemplary view showing a case in which cutting oil is supplied in a state where it is engaged with a turret; And

5 is an exemplary view illustrating a case in which cutting oil is not supplied when the turret is engaged with the turret.

(Explanation of symbols for the main parts of the drawing)

10: turret 12: tool holder

14: coolant line 20: tool post

22: coolant line 30, 130: coolant block

32, 132: inlet 34, 134: coolant line

40, 140: nozzles 42, 142: nozzle head

44, 144: nozzle tip 46, 146: spring

136: upper block 138: lower block

148: sealing ring

C, C ': coolant L: coolant level

P: point near the head of the coolant line

Claims (3)

A coolant supply assembly for a vertical lathe comprising a turret (10) having a tool holder (12) on which various tools are mounted, and a tool post (20) fastened to the turret to transmit power, Is coupled to one side of the tool post 20 includes a cutting oil block 130 for supplying cutting oil (C) to the turret 10, the cutting oil block An inlet 132 connected to the cutting oil supply line 22 of the tool post 20 to receive the cutting oil; A conduit line 134 formed inside the cutting oil block; An outlet formed on the opposite side of the inlet; And And a cutting oil nozzle 140 formed on a conduit facing the outlet and including a head 142 that can open and close the conduit 134 according to whether the turret 10 is fastened. The conduit 134 is formed downward along the direction of gravity at the point P adjacent to the head, so that the cutting oil C in the conduit 134 is guided to the cutting oil nozzle 140 in a direction opposite to gravity. Cutting oil supply assembly, characterized in that. The method of claim 1, A spring for applying a compressive force is disposed on the top of the nozzle head 142, The inlet 132 of the coolant block 130 is formed at a position relatively lower than the nozzle head 142. 3. The method of claim 2, When the supply of the cutting oil C is stopped while the tool post 20 is coupled to the turret 10, the inlet 132 of the conduit 134 may be disposed within the cutting oil block 130. The cutting oil supply assembly in which the cutting oil (C) always remains in the portion up to the point (P) adjacent to the nozzle head (142).

Images