JPH10193238A - Machining accuracy maintaining device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To keep a temperature constant and maintain machining accuracy, by absorbing heat itself from a heat generating source mounted in each part of a machine structure of punch press, laser work machine, etc., by a liquid in a tank of the machine structure, and circulating the liquid absorbing the heat. SOLUTION: This device, formed by providing a partition in a machine structure of laser work machine, punch press, etc., has tanks 1 to 8 receiving a liquid, route formed by connection the tank 1 to 8 and pipes P1 to P9, and a pump 9 mounted in the route, and the liquid in the tank 1 to 8 absorbing heat from a heat generating source 13 mounted in each part of the machine structure is circulated through the route by the pump 9. In this way, a temperature of the machine structure is kept constant and machining accuracy is maintained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a processing accuracy maintaining device,
In particular, the present invention relates to a processing accuracy maintaining device that suppresses the influence of heat from a heat source attached to a mechanical structure such as a punch press or a laser processing machine, maintains a constant temperature, and maintains processing accuracy.

[0002]

2. Description of the Related Art Conventionally, a heat source such as a driving source, a sliding body, a rotating body, etc. is attached to a frame of a mechanical structure such as a punch press or a laser beam machine at various places.

For example, in a punch press, as is well known, a ram cylinder is provided between a front frame and a rear frame, and below the ram cylinder 3, corresponding punches and dies are respectively formed in an annular shape. An arranged upper turret and a lower turret are provided.

[0004] With this configuration, if the upper turret and the lower turret are rotated synchronously and the ram cylinder is operated, a predetermined punching process can be performed on the work.

In this case, the ram cylinder is a sliding body, and the upper turret and the lower turret are rotating bodies, and when they work together, they become a heat source. Effect.

[0006]

For example, in a multifunction machine in which the above-described punch press and laser processing machine are incorporated in one mechanical structure, the processing of the laser processing section is performed by heat generated from the above-described punch processing section. The shaft supporting the head is distorted.

As a result, the centers of the punched portion and the laser processed portion are separated from each other, and the processing accuracy is significantly reduced.

Conventionally, various control devices have been installed in order to eliminate the influence of heat and maintain processing accuracy.

However, the above-mentioned heat sources are attached to various parts of the mechanical structure.

Therefore, heat is also generated from various parts of the mechanical structure, and it is actually difficult to easily control the influence of such heat.

In other words, in order to control the influence of heat, various factors such as the outside air temperature around the installed processing machine such as a punch press and the operating frequency of the processing machine must be taken into consideration. The considered control unit generally has to be very precise and accordingly expensive.

Further, as described above, if an attempt is made to control the influence of heat generated from various parts of the mechanical structure, the control itself becomes difficult, which is not practical.

An object of the present invention is to absorb the heat itself from a heat source attached to various parts of a mechanical structure such as a punch press or a laser beam machine into a liquid in a tank of the mechanical structure to absorb the heat. The object of the present invention is to maintain the temperature constant and maintain the processing accuracy by circulating the liquid thus obtained.

[0014]

According to the present invention, as shown in FIG. 1, tanks 1 to 8 formed by partitioning a mechanical structure such as a laser processing machine or a punch press and containing a liquid are provided. It has a path formed by connecting the tanks 1 to 8 and the pipes P1 to P9, and a pump 9 attached to the path, and is attached to various parts of the mechanical structure to absorb heat from the heat source 13 A machining accuracy maintenance device characterized by maintaining the machining accuracy by maintaining the temperature of the mechanical structure constant by circulating the liquid in the tanks 1 to 8 through the path by the pump 9; and As shown in FIGS. 1 to 4, a partition is formed in a mechanical structure such as a laser beam machine, a punch press, or the like, and tanks 1 to 8 for storing liquid are connected to tanks 1 to 8 and pipes P1 to P9. Has a path formed by the temperature control device comprising a pump mounted in said path, the heat source 1 is mounted on various parts of the machine structure
The temperature of the liquid in tanks 1 to 8 that absorbed the heat from 3
By controlling the temperature to a predetermined value by the temperature control device and circulating the liquid having the temperature controlled to the predetermined value through the path by the pump, the temperature of the mechanical structure is kept constant and the processing accuracy is maintained. The technical means of a processing accuracy maintenance device characterized by maintaining the following.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the accompanying drawings according to embodiments. FIG. 1 shows the first embodiment of the present invention.
It is a figure showing an embodiment.

The illustrated mechanical structure (for example, a punch press) has a front frame 10 and a rear frame 11,
The front frame 10 and the rear frame 11 are connected by a bar 12 (FIG. 1B).

The front frame 10 and the rear frame 11
As shown, the heat source 13 (FIG. 1)
(A)) For example, tanks 1 to 8 containing liquids (water, oil, and the like) are formed, for example, in which a clutch brake is attached and a partition is provided.

That is, the entire mechanical structure is regarded as a liquid container, and partitions are provided in the mechanical structure to form tanks 1 to 8 for storing liquid.

As is well known, various devices such as the above-mentioned clutch brake are attached to the above-mentioned mechanical structure, and the number of tanks 1 to 8 is limited by It depends on the configuration.

In the example of FIG. 1, for example, eight tanks 1 to 8
Are formed.

The tanks 1 to 8 are connected to each other by pipes.

That is, in order from the right side in FIG. 1, the tank 7 and the tank 8 are connected to the tank P2, the tank 8 and the tank 1 are connected to the pipe P2, and the tanks 1 and 2 are connected to the tank 2 by the pipe P3. The tank 3 is connected by the pipe P4, the tank 3 and the tank 4 are connected by the pipe P5, the tank 4 and the tank 5 are connected by the pipe P6, and the tank 5 and the tank 6 are connected by the pipe P7.

Finally, the tank 6 and the tank 7 are connected via a pump 9 by a pipe P8 and a pipe P9.

With this configuration, a liquid path is formed,
By operating the pump 9, the liquids stored in the tanks 1 to 8 circulate through the passage (for example, FIG.
From the arrow A to the arrow B).

Therefore, the temperature of the mechanical structure can be kept constant by absorbing the heat from the heat generating source 13 attached to each part of the mechanical structure to the circulating liquid, thereby maintaining the temperature of the mechanical structure constant. This eliminates the influence of the heat generated and maintains the processing accuracy.

For example, when the heat source 13 is a clutch brake, a part of the front frame 10 to which the clutch brake is attached is affected by heat, and the heat tends to spread to the entire front frame 10. .

However, since the tank 1 and the tank 8 are formed in the vicinity of the clutch brake which is the heat source 13, heat is transferred to the tanks 1 and 8, thereby storing the heat in the tanks 1 and 8. The temperature of the liquid being raised.

However, as described above, the liquid whose temperature has risen circulates through the path formed by the tanks 1 to 8 and the pipes P1 to P9 by the action of the pump 9, so that heat is transmitted to the entire mechanical structure. It spreads, and eventually the temperature of the mechanical structure falls to a certain value.

FIG. 2 is a diagram showing a second embodiment of the present invention.

The difference from the first embodiment shown in FIG. 1 is that a cooling device 15 is attached to the liquid passage.

The details of the cooling device 15 are as shown in FIG. 4 and include a control unit 15A, a refrigerator 15B, a pump 15C, and a tank 15D.

The control unit 15A is connected to the inlet IN of the cooling device 15
And signals S1 and S2 from a temperature sensor (not shown) installed at the outlet OUT, and the control signal S
3 is transmitted to the refrigerator 15B.

The refrigerator 15B receives the control signal S3 from the control unit 15A and controls the temperature of the liquid circulating in the path to a predetermined value.

The pump 15C circulates the liquid through the above-mentioned path similarly to the pump 9 of FIG. 1, and the tank 15D temporarily stores the liquid returned from the inlet IN to the cooling device 15.

According to the cooling device 15 having such a configuration, the temperature of the liquid whose temperature has risen by absorbing heat from the heat sources 13 attached to various parts of the mechanical structure is controlled to a predetermined value. Then, the liquid controlled to the predetermined temperature circulates again through the path.

That is, according to the first embodiment shown in FIG. 1, the liquid stored in the tanks 1 to 8 of the mechanical structure can be circulated by the pump 9 to keep the temperature constant.

However, for example, when the apparatus shown in FIG. 1 is operated in the morning and the afternoon, the temperature can be kept constant, but the temperature of the entire mechanical structure is different.
The processing accuracy changes between morning and afternoon.

In such a case, according to the embodiment of FIG. 2, since the temperature of the circulating liquid is directly controlled by the cooling device 15, the liquid set at a predetermined temperature always circulates. The influence of heat is further suppressed, and the processing accuracy is further improved.

Further, when controlling the temperature of the circulating liquid, it is possible to control not only the cooling device 15 shown in FIG. 2 but also a heating device (not shown).

That is, in a punch press, a laser processing machine, or the like, there is a temperature (saturate temperature) at which the processing accuracy does not change, and the temperature of a mechanical structure is maintained at this temperature by a heating device. It is also possible by increasing the temperature of the circulating liquid.

In other words, the temperature of the circulating liquid is controlled to a predetermined value by the cooling device 15 and the temperature control device including the above-mentioned heating device, whereby the processing accuracy can be maintained.

FIG. 3 is a diagram showing a third embodiment of the present invention.

FIG. 2 differs from the second embodiment in that tanks 1 to 8 are connected in series in FIG. 2, while tanks 1 to 8 are connected in parallel in FIG.

According to the third embodiment shown in FIG.
Since the liquid at a temperature controlled to a predetermined value by 5 circulates directly through each of the tanks 1 to 8 connected in parallel, it is attached to various parts of the mechanical structure as compared with the embodiment of FIG. Since the influence of heat from the heat source 13 is small and the degree of temperature rise of the liquid stored in the tanks 1 to 8 is small, the efficiency is high.

In the above embodiment, the case where the present invention is applied to a punch press has been described in detail. However, the present invention is not limited to this, and a laser processing machine or a combined machine of a punch press and a laser processing machine may be used. Applied to various processing machines,
Needless to say, the same effects as described above can be obtained.

[0046]

As described above, according to the present invention, the liquid stored in the tank formed in the mechanical structure absorbs the heat from the heat sources attached to various parts of the mechanical structure, and By circulating the absorbed liquid (FIG. 1) or controlling the temperature of the liquid that has absorbed heat to a predetermined value and circulating the liquid at a temperature controlled to a predetermined value (FIGS. 2 to 4), There is an effect that the processing accuracy is maintained by maintaining the temperature of the mechanical structure constant.

The formation of the tank in the mechanical structure also has the effect of increasing the weight and reducing noise.

[0048]

[Brief description of the drawings]

FIG. 1 is a diagram showing a first embodiment of the present invention.

FIG. 2 is a diagram showing a second embodiment of the present invention.

FIG. 3 is a diagram showing a third embodiment of the present invention.

FIG. 4 is a detailed view of a cooling device used in the present invention.

[Explanation of symbols]

 1 to 8 tank 9 pump 10 front frame 11 rear frame 12 bar 13 heat source 15 cooling device P1 to P9 pipe

Claims (4)

[Claims] 1. A tank formed by inserting a partition into a mechanical structure such as a laser beam machine or a punch press, for storing a liquid, a path formed by connecting the tank and a pipe, and a path attached to the path. The liquid in the tank, which is attached to each part of the mechanical structure and absorbs heat from the heat source, is circulated through the path by the pump, so that the temperature of the mechanical structure is kept constant. A machining accuracy maintenance device characterized in that the machining accuracy is maintained by maintaining the machining accuracy. 2. A tank formed by inserting a partition into a mechanical structure such as a laser beam machine or a punch press, for storing a liquid, a path formed by connecting the tank and a pipe, and a path attached to the path. Having a temperature control device including a pump, the temperature of the liquid in the tank that is attached to each part of the mechanical structure and absorbs heat from the heat source, is controlled to a predetermined value by the temperature control device, A processing accuracy maintaining device characterized in that a liquid having a temperature controlled to a predetermined value is circulated through the above-mentioned path by a pump, thereby maintaining a constant temperature of the mechanical structure and maintaining processing accuracy. 3. The processing accuracy maintaining apparatus according to claim 2, wherein said tanks are connected in series via a pipe and a cooling device is attached. 4. The processing accuracy maintaining device according to claim 2, wherein said tanks are connected in parallel via a pipe and a cooling device is attached.