KR100873977B1 - Manufacturing system for through bolt for gas turbine and manufacuring method for through bolt using the same - Google Patents

Abstract

A through bolt machining system and a through bolt machining method using the same are provided to process the whole parts of a long object at a time, automatically arrange the steady by measuring vibration, bending and twist of the object, and automatically correct a processing error of the object. A through bolt machining system comprises a sensor(622) measuring straightness, circularity, and coaxial property of an object and vibration, bending, and twist of the object in rotation; a tool(620) including a tool body(624), a bite tip(626) for processing the object, a metal heat sink for radiating the heat generated in the bite tip, and a cutting fluid nozzle providing the cutting fluid to the pointed end of the bite tip in the processing of the object; a steady(610) equipped in the opposite side of the tool and fixing the object; and a data processing unit(630) which is connected to the tool, the steady and the sensor, receives the vibration, bending and twist sensing data from the sensor and controls the position of the steady based on the data, and receives the straightness, circularity, and coaxial property of the object from the sensor and automatically corrects a process error in the processing of the object.

Description

Through bolt cutting processing system for gas turbine and through bolt cutting processing method {Manufacturing System for Through Bolt for Gas Turbine and Manufacuring Method for Through Bolt using the same}

The present invention relates to a through-bolt cutting system for a gas turbine and a through-bolt cutting method using the same, in particular, in the manufacture of the through-bolt using the dust-proof port so that the through-bolt does not bend during the production of the dust-proof and the tool Do not disturb the processing by interference of the stand, and for the processing of through bolts, the dustproof hole and the tool post are independently transferred to each other so that all parts can be processed at once by only the cutting process even for the strong metallic object. Through-bolt cutting processing system for gas turbines that can automatically arrange the dustproof sphere by measuring the vibration, warpage, distortion of the object, and can automatically correct the machining error of the object, and the through bolt cutting processing method using the same .

Power generation gas turbine facilities are developed at a rapid rate due to their excellent thermal efficiency and less pollution, and the installation and use of the facilities are gradually increasing.

The gas turbine is composed of a main part such as a compressor, a combustor, a turbine, and the turbine generates electricity by rotating the turbine using hot combustion gas generated by mixing compressed air with fuel in the combustor.

Since gas turbines currently in use in Korea are frequently shut down, replacement of the same equipment is expected after the service life of about 8 to 10 years. It is occurring. In addition, the exchange of each unit is imported from an expensive foreign company and replaced, a huge amount of foreign currency is wasted.

Fig. 1 shows a cutaway view of a gas turbine generator, and Fig. 2 shows a diagram connecting the compressor rotor portion and the turbine rotor portion of the turbine blade.

As shown in the figure, a gas turbine has a rotor formed through a central portion thereof, and a disk wheel which is connected to the rotor connected to the rotating blade to hold the blade is formed. Through bolts 112 are provided through the edges of the disc wheels and are sealed by upper and lower casings (not shown) so that the rotor and the blades are not exposed to the outside.

Through bolt is a device that fixes the rotor through the disk wheel that connects the blades. It acts to attenuate high and low vibrations due to high frequency and low frequency fatigue during turbine operation and stop.

However, it is inconvenient to manufacture bolts that can be used even under high pressure using environment, because all of them must be imported and replaced in foreign countries. In addition, the size of this market is gradually increasing, making such bolts essential.

In order to manufacture through bolts, a metal material that can withstand high temperature and pressure conditions is required. For this purpose, Inconel 718 (super heat resistant nickel alloy steel) having excellent mechanical properties that can be used under such bad conditions is used. The Inconel 718 material, which has excellent mechanical strength, is a heat-resistant alloy containing 15% of chromium, 6-7% iron, 2.5% titanium, 1% aluminum, manganese, and silicon as nickel, and has good heat resistance. There is a characteristic that does not oxidize in the oxidizing air flow of 900 ℃ or more. In addition, many other properties, such as elongation, tensile strength, yield point, etc., do not change mostly to about 600 ° C., and are excellent in mechanical properties, and do not corrode organic materials and salt solutions.

Since the through bolts are fixed through the respective stages of the gas turbine 1 to 4 stages, the length of the through bolts should be generally longer than 2 meters. In addition, due to the characteristics of being able to withstand high temperature and high pressure, one material must be processed because it cannot be connected to welding.

However, when manufacturing a through bolt having a length of more than 2 meters, there was a problem that the bolt is bent during processing to achieve a straightness and coaxiality.

Fig. 3 shows a diagram in which displacement occurs during through bolting and machining.

The upper side of FIG. 3 is a figure which shows before and after processing the general bolt 110. FIG.

Since the general bolt 110 is short in length and the ratio of the length to the diameter of the bolt 110 is not large, the deflection displacement caused by the self-weight of the bolt 110 and the force acting by the tail stock 130 is also small. Rather, straightness itself is not so important, so it doesn't matter.

The lower side of FIG. 3 is a figure which shows before and after the through-bolt 112 is processed.

As shown in the lower side of FIG. 3, the length of the through bolt 112 is longer than 2 m and the center portion sags downward. Although the through bolt 112 has a strong metallic property, it is difficult to cut as the metal is strong, and in order to increase the cutting force, the force acting on the side by the tail stock 130 on the left and right sides also becomes stronger, and compared to the length Due to the small shape of the diameter, the middle part of the through bolt 112 is sag downward due to the rotational force for cutting.

To prevent this, a dustproof hole is installed in the middle of the bolt to be processed. Although the straightness is improved by the installation of the dustproof hole, the dustproof hole prevents the cutting of the vise tip, so that a certain part is cut by the vise tip. After the work, the machine is installed on the machined part again, and the entire process is completed by processing the remaining part including the part where the machine is installed. However, when machining due to the positional defect of the machine, There was a problem that prevented the progress of the vise tip.

4 is a front view illustrating a conventional dustproof outlet 120.

As shown in FIG. 4, the conventional dustproof outlet 120 of FIG. 4 opens the upper end portion of the dustproof outlet 120 when the through bolt 112 is mounted on the tailstock 130 before processing. When the mounting and the work is closed by closing the upper end of the dustproof opening 120 is made by the vise tip 140 is made.

However, according to the above method, since the conventional dustproof hole 120 completely wraps along the circumferential direction of the bolt 112 in a ring shape, the vise tip 140 is processed during machining in the axial direction of the through bolt 112. Inevitably, an interference occurs between the vise tip 140 and the dustproof outlet 120, and after the through bolt 112 of the portion where the dustproof outlet 120 is not installed, the machining process is stopped and then the dustproof outlet 120 After the process is again mounted on the end of the machining process, the machining process is made on the part that has not yet been processed, and thus there is a problem that the work yield falls due to the intermittent work.

FIG. 5 is a side view illustrating a dustproof outlet 400 coupled to one tailstock 130 as one embodiment of the prior art.

Referring to FIG. 5, the tail stock 130 and the dustproof outlet 400 are coupled to each other, and the dustproof outlet 400 is formed to completely wrap the object 420 in the circumferential direction as in the dustproof outlet 120 of FIG. 4. It is. When the dustproof port 400 of the form combined with the tailstock 130 as shown in FIG. 5 is used, there is no big problem when the length of the object 420 is short, but the dustproof port and the chuck 410 are long. There is a problem that can not prevent the vibration of the center is farther away. In the last part where the tool post (not shown) proceeds while cutting along the object 420, the tool post only proceeds to the dustproof opening 400, but the dustproof opening 400 completely surrounds the object 420 in the circumferential direction. Since it is impossible to proceed any more because it is caught by the vibration isolator 400, it is inevitably impossible to process as much as the interval 402 between the vibration isolator 400 and the tail stock 130. Therefore, the object 420 corresponding to the distance 402 between the dustproof outlet 400 and the tail stock 130 is not dismantled by disassembling the dustproof outlet 400 and changing the position of the object 420. Since a part of) cannot be machined, a large problem occurs in the productivity of the through bolts that need to process 2m or more of the object 420 at a time. That is, when the object 420 cannot be processed to the end at once, a significant difference occurs in the yield of the result.

Furthermore, when the object 420 is changed in position and processed in several processes, the straightness and coaxiality of the result cannot be guaranteed unlike in the case of machining at once. Since the straightness and coaxiality are very important in the trough bolts for gas turbines, these problems are fatal to the reliability of the trough bolts for gas turbines.

Figure 6 is a side view showing the shape of the dustproof sphere 500 coupled to the tool bar in another embodiment according to the prior art.

Referring to FIG. 6, since the tool rest 503 and the vibration isolation tool 501 are coupled, the tool rest 503 and the vibration isolation tool are inevitably in the last part where the tool rest 503 proceeds as shown in the lower figure of FIG. 5. The tool opening does not progress by the interval 502 between the 501, and machining is impossible. Therefore, since the tool post 503 cannot proceed completely to the end of the object 420, the same problem as described in the tailstock coupled dustproof device 400 of FIG. 5 occurs, and a repeated description thereof will be omitted.

In addition, in the tool bar coupled type dustproof outlet 500, since the dustproof tool 501 is transported in the same manner as the tool rest 503, in the case of the curved object 420, the diameter of the fixture of the dustproof tool 501 is continuously The disadvantage is that machining is impossible unless it is controlled to change.

In order to solve the above problems, the present invention can be used even in bad conditions of high temperature and high pressure inside the gas turbine, while preventing the vibration of the body portion of the bolt during the manufacturing of the through-bolt, while the overall length of the object to prevent vibration It is processed at once without any unprocessed part, and the dustproof tool and tool stand are transferred independently of each other to process the cutting process only to guarantee the straightness and coaxiality, and the vibration outlet is automatically arranged by measuring the vibration, warpage and distortion of the object. It is an object of the present invention to provide a through bolt cutting system for a gas turbine capable of automatically correcting a machining error of an object, and a through bolt cutting processing method using the same.

The through-bolt cutting system for a gas turbine of the present invention for achieving the above object is provided with a tool post for cutting an object, a first guide for transferring the tool post, separated from the tool post and provided on the opposite side of the tool post. And a dustproof port for fixing the object and a second guide for transporting the dustproof port, and the tool post and the dustproof port may be independently transferred.

According to an embodiment of the present invention, the dustproof port is a support part, a first dustproof arm for fixing the object on the first side, and fixing the object on the second side facing the first dustproof arm and the first side surface. Second anti-vibration arm for, a first joint for rotatably fixing one end of the first anti-vibration arm to the support so that the distance to the object can be adjusted, the second dust-proof so that the distance to the object can be adjusted And a second joint for rotatably securing one end of the arm to the support and a third antivibration arm that can protrude from the center of the upper surface of the support to secure the bottom of the object.

According to an embodiment of the present invention, the first and second anti-vibration arms further include first and second protrusions, respectively, in portions extending inwardly of the support, and the third anti-vibration arm is inward of the support. A pair of third protrusions on both sides of the extended portion, and the dustproof opening has a pair of sliding grooves, one end of which is fixed to an inner wall of the support portion, the first protrusion and the third protrusion of which are respectively slid; A first plate-shaped slider comprising a second plate-shaped slider and a third anti-vibration arm, one end of which is fixed to an inner wall of the support part, and includes a pair of sliding grooves in which the second and third protrusions slide, respectively. It further comprises a cylinder connected to the inwardly extending portion of the support of the third dust-proof arm to reciprocate.

According to an embodiment of the present invention, the cylinder may further include a stroke control unit connected to the cylinder and controlling the stroke of the cylinder according to the diameter of the object.

According to an embodiment of the present invention, it may further include a safety valve connected to the cylinder and capable of fixing the stroke of the cylinder so that the first to third anti-vibration arms are fixed.

According to an embodiment of the present invention, there may be a plurality of dustproof holes for fixing the object according to the length of the object.

According to an embodiment of the present invention, the length of the object is 2m or more and 10m or less, the ratio of the length and diameter of the object may be 20: 1 to 100: 1.

According to one embodiment of the invention, the material of the object may be an Inconel 718 material.

By the above-described configuration, the present invention can provide a twist-free through-bolt that does not occur in the body portion of the bolt in the manufacture of the through-bolt for the gas turbine or manufactured within the allowable range.

Since the dustproof port and the tool rest of the through-bolt processing system for a gas turbine of the present invention are installed in separate guides, the tool rest and the dustproof tool may be operated independently of each other. In addition, since the anti-vibration port is provided on the opposite side of the tool post, there is no interference between the tool post and the anti-vibration port.

In addition, the vibration isolator can be automatically placed in the place where the vibration is the greatest when the object to be processed by the through bolt, and the machining error during machining can also automatically correct the error compared to the input target shape.

In addition, there is no problem that the vibration of the center of the object can not be prevented like the tailstock coupled type dustproof sphere because the dustproof member can move freely. Even after moving to the end, the problem that a certain interval of the workpiece cannot be processed is solved.

In addition, since the tool stand and the dustproof hole are completely separated, a plurality of dustproof openings can be additionally installed, and thus more precise work can be prevented by more effectively preventing vibration during machining, and convenience of use is also provided.

In addition, the tool post and the anti-vibration tool can be operated independently of each other, which enables the processing of more diverse objects (long products and curved products).

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

7 is a front view showing a through bolt cutting system 600 for a gas turbine according to an embodiment of the present invention.

Referring to Figure 7, the gas turbine through-bolt cutting system 600 according to an embodiment of the present invention is a chuck 410, tailstock 510, tool stand 620, dustproof holes 610, tools A first guide (not shown) for transporting the base 620, and a second guide (not shown) for transporting the dustproof opening 610.

The chuck 410 serves to fix and rotate one end of the object 420.

The object 420 is supported and rotated by the chuck 410 and the tail stock 510 in order to be processed with a through bolt. In one embodiment, the length of the object 420 is 2m or more and 10m or less, and the ratio of the length and diameter of the object 420 may be present between 20: 1 to 100: 1. The material of the object 420 may be an Inconel 718 material.

The tailstock 510 applies pressure to the other end of the object 420 so that the object 420 can be supported at the time of rotation.

The tool post 620 is installed in a first guide (not shown) and guided by the first guide to process the object 420. In one embodiment, tool post 620 may be a cutting bite.

Since Inconel is too strong in metal properties, it is difficult to manufacture it by the process of forging such as long axis, ultra long axis, and large products, and there is a high possibility of cracking of the product and mold breakage during the forging process. In addition, it is difficult to guarantee the straightness of the product by the forging process, the through-bolt for the gas turbine that requires the reliability of the straightness is above all, it is preferable to be manufactured only by the cutting process, not other processes.

The anti-vibration opening 610 is installed in a second guide (not shown), and guided by the second guide serves to prevent vibration generated when the object 420 is processed by the tool post 620. . Since the second guide is provided separately from the first guide, the tool rest 620 and the dustproof opening 610 may be operated independently of each other. In addition, since the anti-vibration opening 610 is provided on the opposite side of the tool post 620, no interference occurs between the tool post 620 and the anti-vibration opening 610.

In addition, since the dustproof opening 610 can be freely positioned without interference of other components, there is no problem that the vibration of the center of the object 420 can not be prevented like the tailstock coupled dustproof zone 400 of FIG. 5. 6, even after the tool rest 503 moves to the maximum, such as the tool restraint type dustproof outlet 500 of FIG. 6, the distance 502 between the tool rest 503 and the dustproof outlet 501 may not be processed. Resolved.

In addition, since the tool post 620 and the dustproof opening 610 are completely separated, a plurality of dustproof openings are additionally installed to operate independently, thereby more effectively preventing vibration during machining, thereby enabling more precise work. It is also easy to use.

In addition, since the tool post 620 and the anti-vibration opening 610 may be operated independently of each other, it is possible to process the object 420 of more various shapes, such as a long product, a curved product.

8 is a plan view showing a pre-processing operation state of a through bolt cutting system for a gas turbine according to an embodiment of the present invention.

Referring to Figure 8, the through-bolt cutting system for the gas turbine is a first guide for transporting the chuck 410, tailstock 510, tool rest 620, dustproof hole 610, tool rest 620 (Not shown), a second guide (not shown) for transferring the dustproof opening 610, and a data processor 630.

The through bolt cutting system for the gas turbine of FIG. 8 includes substantially the same components as the through bolt cutting system for the gas turbine of FIG. 7, and the same components are denoted by the same reference numerals and repeated descriptions are omitted.

Tool post 620 includes a tool post body 624, a bite arm 625, a bite tip 626, and a sensor 622.

Tool rest body 624 supports a plurality of bite arms 625. The bite arm 625 has a bite tip 626 at each end, and since the tool post body 624 is rotatable, one of the plurality of bite tips 626 may be selected. One of the plurality of bite arms 625 may be equipped with a sensor 622 at its end instead of the bite tip 626.

The sensor 622 may measure the external shape, the straightness, the roundness, the coaxiality, and the like of the object 420, and the vibration, bending, and distortion during rotation for processing. 8 is a view showing the operation of arranging the dustproof opening 610 before starting the full-scale processing of the object 420, the tool post 620 is the object in the state that is rotating only before the object 420 is processed. While moving along 420, the sensor 622 measures vibration, bending, and warpage of the object 420. In FIG. 8, the number of the anti-vibration openings 610 is shown as three, but may be one or plural.

The data processing unit 630 is connected to the tool post 620, the vibration isolator 610, the sensor 622, the external shape of the object 420 generated when the object 420 rotates from the sensor 622, vibration, By receiving sensing data such as bending and warping, the position of the dustproof opening 610 may be controlled based on the sensing data. Since the vibration, bending, and distortion when the object 420 rotates are different for each material, the position of the dustproof opening 610 should be changed accordingly. The data processor 630 controls the position of the dustproof outlet 610 based on the sensed data of the sensor 622. As an example, the data processor 630 may arrange the dustproof opening 610 where the vibration width of the object 420 is greatest. In addition, when there are a plurality of anti-vibration openings 610, it may be arranged in a place where the vibration width is the largest, or where there is a residual vibration. In addition, the data processor 630 may adjust the force of the dustproof opening 610 to fix the object 420 based on the sensed data.

9 is a plan view showing an operating state during processing of the through-bolt cutting system for a gas turbine according to an embodiment of the present invention.

Referring to FIG. 9, a through bolt cutting system for a gas turbine may include a first guide for transferring a chuck 410, a tail stock 510, a tool rest 620, a vibration damper 610, and a tool rest 620. (Not shown), a second guide (not shown) for transferring the dustproof opening 610, and a data processor 630.

The through bolt cutting system for the gas turbine of FIG. 9 includes substantially the same components as the through bolt cutting system for the gas turbine of FIG. 8, and the same components are denoted by the same reference numerals and repeated descriptions are omitted.

9, the sensor 622 may be attached to the bite arm 625 along with the bite tip 626. Accordingly, the sensor 622 may measure the external shape, straightness, roundness, coaxiality, etc. of the object 420 when the object 420 is rotated and processed by the bite tip 626.

The data processor 630 may receive external shape data of the object 420 from the sensor 622 during the processing of the object 420 and automatically correct the processing error by comparing the object shape with the target shape of the object 420 previously input. . In one embodiment, the data processing unit 630 may receive the external shape data of the object 420 from the sensor 622 to visually shape it as a graph and provide information to the worker, the input object 420 The tool post 620 may be controlled to detect the point of occurrence of the machining error, the size of the occurrence of the machining error, and to automatically correct the machining error by reworking by comparing the target shape drawing with the external shape drawing of the object 420 being processed. have. Accordingly, more precise machining can be achieved.

8 and 9 can be easily understood by those skilled in the art that various methods are possible.

10 is a front view showing a tool post of the through bolt cutting system according to an embodiment of the present invention.

Referring to FIG. 10, the tool rest includes a tool rest body 624, a bite arm 625, a bite tip 626, a metal heat sink 627, and a coolant nozzle 628.

Tool rest body 624 supports bite arm 625, coolant nozzle 628.

The bite arm 625 is connected to the tool rest body 624 and is attached at the end with a bite tip 626 for machining the object 420 and a metal heat sink for dissipating heat generated by the bite tip 626. 627 is attached.

The coolant nozzle 628 is connected to the tool post body 624 and may be aimed at the end of the bite tip 626 during machining of the object 420 to provide the coolant. The cutting fluid may be water-soluble cutting oil, and unlike the conventional art, in which the cutting oil was not accurately aimed at the bite tip 626, and thus efficient cooling was not possible, the cutting oil is provided by aiming at the bite tip 626, thereby improving machinability and the bite tip. 626 can be extended. In addition, the coolant nozzle 628 may further include a coolant temperature control device for adjusting the temperature of the coolant.

11 is a side view showing the operating state of the dustproof opening of the through-bolt cutting system for a gas turbine according to an embodiment of the present invention.

11, the through-bolt cutting system 600 for a gas turbine according to an embodiment of the present invention is a chuck 410, tailstock 510, tool stand 620, dustproof holes 610, The first guide 760, the second guide 750, and the object 420 are included.

The through bolt cutting system for the gas turbine of FIG. 11 includes substantially the same components as the through bolt cutting system for the gas turbine of FIG. 7, and the same components are denoted by the same reference numerals and repeated descriptions are omitted.

The dustproof opening 610 includes a first dustproof arm 710, a second dustproof arm 720, a third dustproof arm 730, a first joint 712, a second joint 722, and a support 740. do.

The first and second anti-vibration arms 710 and 720 support and fix the object 420 on the first and second side surfaces. The first and second anti-vibration arms 710 and 720 are fixed to the support part 740 so that one end thereof is rotatable by the first and second joints 712 and 722 so that the distance from the object 420 can be adjusted. do.

The third anti-vibration arm protrudes from one side of the support part 740 to support and fix the object 420 on the third side.

In one embodiment, the first to third anti-vibration arms 710, 720, and 730 may be operated by hydraulic pressure.

The second guide 750 guides and supports the support part 740 of the anti-vibration port 610, and the first guide 760 guides and transports the tool post 620.

Since the first and second guides 760 and 750 are formed separately from each other, as described above, the dustproof opening 610 and the tool post 620 may be transferred and operated independently of each other.

12 and 13 are cross-sectional views showing the operation of the dustproof opening 610 of the through-bolt cutting system for a gas turbine according to an embodiment of the present invention.

12 includes substantially the same components as those of FIG. 11, and the same components are denoted by the same reference numerals, and repeated description thereof will be omitted.

The dustproof opening 610 may include a first dustproof arm 710, a second dustproof arm 720, a third dustproof arm 730, a first joint 712, a second joint 722, a support part 740, The first plate slider 810, the second plate slider 820, and the cylinder 840 are included.

12 illustrates a state in which the cylinder 840 is contracted. Referring to FIG. 12, the first anti-vibration arm 710 and the second anti-vibration arm 720 include a first protrusion 714 and a second protrusion 724 at portions extending inwardly of the support part 740, respectively. . The third anti-vibration arm 730 includes a pair of third protrusions 734 on both sides of the portion extending inwardly of the support part 740.

In FIG. 12, the outer circle of the object 420 is an imaginary circle showing a space when the first anti-vibration arm 710, the second anti-vibration arm 720, and the third anti-vibration arm 730 are widened. .

One end of the first plate-shaped slider 810 is fixed to the inner wall of the support part 740, the first sliding groove 812, the third protrusion 734 is sliding the first protrusion 714 therein, the first protrusion 734 is sliding Two sliding grooves 814.

One end of the second plate-shaped slider 820 is fixed to the inner wall of the support part 740, and the third sliding groove 822 and the third protrusion 734 are slid in which the second protrusion 724 is slid. Four sliding grooves 824.

The cylinder 840 is connected to a portion extending inwardly of the support part 740 of the third anti-vibration arm 730 to allow the third anti-vibration arm 730 to reciprocate. As an embodiment, the cylinder 840 may be a hydraulic cylinder that converts hydraulic energy into mechanical energy and adjusts thrust and speed by controlling pressure and flow rate as a hydraulic element performing linear motion. Cylinder 840 is a cylinder barrel. It may include a piston and a piston rod, an end cap, a hydraulic oil port and a seal.

In the operation of the cylinder 840, hydraulic oil flows into the piston-side area to apply pressure to the piston, and a thrust multiplied by the pressure and the area is formed. When the force overcomes the external force and the friction force, the piston rod moves forward. Cylinder 840 is relaxed. That is, the hydraulic energy is changed to mechanical energy and the result acts on the third anti-vibration arm 730. Contraction of the cylinder 840 is operated in the opposite manner. When the piston of the cylinder 840 moves forward, the hydraulic oil on the piston rod side flows out from the hydraulic tank, and when the piston moves backward, the hydraulic oil on the piston side flows out into the hydraulic tank.

In one embodiment, the stroke control unit 860 may be connected to the cylinder 840 to control the stroke of the cylinder 840 according to the diameter of the object 420. For example, the stroke of the cylinder 840 can be controlled by adjusting the amount of hydraulic pressure supplied to the cylinder 840.

13 shows the cylinder 840 in a relaxed state. 12 and 13, as the cylinder 840 is relaxed, the third anti-vibration arm 730 is pushed to protrude out of the support part 740. As the third anti-vibration arm 730 moves forward, the third protrusion 734 in the second sliding groove 814 also moves forward. Since the second sliding groove 814 is curved in a curved direction toward the third dustproof arm 730 which is the central axis of the dustproof port, the third protrusion 734 advances linearly toward the outside of the support part 740. Advancement of the third protrusion 734 rotates the first plate-shaped slider 810 about the fixed point 811 of the first plate-shaped slider 810 and the support 740.

On the other hand, the position of the first sliding groove 812 also moves in the outward direction opposite to the third anti-vibration arm 730 which is the central axis of the dustproof outlet, as the first plate-shaped slider 810 rotates. The first protrusion 714 in the 812 is also slid in the first sliding groove 812 to move outwardly opposite to the third anti-vibration arm 730. As the first protrusion 714 moves in the outward direction opposite to the third anti-vibration arm 730, the first anti-vibration arm 710 rotates about the first joint 712. Therefore, as a result, the end portion projecting out of the support part 740 of the first dustproof arm 710 is narrowed toward the object 420.

Since the anti-vibration port is symmetrical about the third anti-vibration arm 730 which is the central axis, the operation of the second plate-shaped slider 820 is also the same as that of the first plate-shaped slider 810.

In an embodiment, the safety valve 850 may be connected to the cylinder 840 to fix the stroke of the cylinder 840 so that the first to third anti-vibration arms 710, 720, and 730 are fixed. For example, the stroke of the cylinder 840 can be fixed by fixing the amount of hydraulic pressure supplied to the cylinder 840.

14 and 15 are perspective views showing a through bolt cutting system for a gas turbine according to an embodiment of the present invention.

14 and 15, the through-bolt cutting system 600 for a gas turbine according to an embodiment of the present invention includes a chuck 410, a tail stock 510, a tool stand 620, and a dustproof hole 610. ), A first guide 760, a second guide 750, and an object 420.

The through-bolt cutting system for the gas turbine of FIGS. 14 and 15 includes substantially the same components as the through-bolt cutting system for the gas turbine of FIG. 7, and the same components are denoted by the same reference numerals, and repeated descriptions are omitted. do.

Referring to FIG. 14, the dustproof tool 610 and the tool rest 620 may be independently transported by separate guides, and the dustproof tool 610 and the tool rest 620 may be provided on opposite sides. It can be seen that there is no interference at all. It can also be seen that the object 420 is being processed to have curvature.

Referring to FIG. 15, it can be seen that a plurality of independent dustproof openings 610 are provided. Since a plurality of anti-vibration ports 610 may be installed to operate independently of each other, accuracy and convenience of use of the object 420 described above may be achieved.

The tool post work section 900 may be provided with a tool post (not shown) and a first guide (not shown).

16 is a flowchart illustrating a through bolt cutting machining method according to an embodiment of the present invention.

First, the object to be processed is rotated (S110).

Then, the vibration, bending and distortion data generated during the rotation of the object is sensed (S120).

On the basis of the sensed vibration, warpage, distortion data, the vibration isolator for preventing the vibration, bending, distortion during rotation of the object is arranged (S130). In one embodiment, the dustproof openings may be arranged at the largest vibration width of the object, and when the number of the dustproof openings is plural, the dustproof openings may be arranged at the largest vibration width, the place where the residual vibration exists, and the like.

 While cutting the object, the external shape of the object is sensed (S140).

The external shape of the object sensed by the step S140 is compared with the target shape of the object previously inputted to automatically correct the machining error (S150). As an embodiment, the external shape of the sensed object and the target shape of the object input previously may be visually shaped as graphs, respectively. By comparing the external shape of the sensed object with the target shape, the point and size of the machining error is detected, and the machining error is automatically corrected by reworking the size of the error to the point where the machining error occurs. do. The rework may be performed during the processing of the object, or may be made after the processing of the object is completed.

What has been described above is only one embodiment for carrying out the present invention, and the present invention is not limited to the above-described embodiment, and the present invention is made without departing from the gist of the present invention as claimed in the following claims. Anyone with ordinary knowledge in this field will have the technical idea of the present invention to the extent that various modifications can be made.

1 is a cutaway view of a gas turbine generator.

2 is a view connecting the compressor rotor portion and the turbine rotor portion of the turbine blade.

It is a figure which shows the displacement generate | occur | produced at the time of thru bolt mounting and a process.

4 is a front view showing a conventional dustproof port.

FIG. 5 is a side view illustrating a dustproof port of a type combined with a tail stock 130 as one embodiment of the related art.

Figure 6 is a side view showing the shape of the dustproof tool coupled with the tool bar in another embodiment according to the prior art.

7 is a front view showing a through-bolt cutting system for a gas turbine according to an embodiment of the present invention.

8 is a plan view showing a pre-processing operation state of the through bolt cutting system for a gas turbine according to an embodiment of the present invention.

Figure 9 is a plan view showing an operating state during processing of the through-bolt cutting system for a gas turbine according to an embodiment of the present invention.

10 is a front view showing a tool post of the through bolt cutting system according to an embodiment of the present invention.

11 is a side view showing an operating state of the through-bolt cutting system for a gas turbine according to an embodiment of the present invention.

12 and 13 are cross-sectional views showing the operation of the dustproof opening 610 of the through-bolt cutting system for a gas turbine according to an embodiment of the present invention.

14 and 15 are perspective views showing a through bolt cutting system for a gas turbine according to an embodiment of the present invention.

16 is a flowchart illustrating a through bolt cutting machining method according to an embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

410: Chuck 420: object

510: tailstock 600: through-bolt cutting system for gas turbine

610: dustproof opening 620: tool stand

Claims (11)

Straightness, roundness, coaxiality of the object and the sensor for measuring vibration, bending, and warping during rotation for machining, a tool bar body, a bite tip for processing the object is attached to the end and the bite tip A metal heat sink is attached to the heat sink and is supported by the tool rest body and connected to the tool rest body and aims at the end of the bite tip when machining the object to provide cutting oil. A tool stage for cutting an object including a coolant nozzle which can be cut; A first guide for transporting the tool post; It is separated from the tool stand is provided on the opposite side of the tool stand, the dustproof hole for fixing the object; It is connected to the tool bar, the anti-vibration port and the sensor receives the sensing data of the vibration, bending and distortion of the object generated when the object rotates from the sensor to control the position of the anti-vibration opening based on this, A data processing unit which receives the straightness, roundness, and coaxiality data of the object from the sensor during processing of the object, and controls the tool bar to automatically correct a machining error by comparing the object shape with a previously input target shape; And A second guide for conveying the dustproof port, Through-bolt cutting processing system for a gas turbine, characterized in that the tool post and the dustproof opening can be independently transferred. delete delete According to claim 1, The dustproof port, Support; A first anti-vibration arm for fixing the object on a first side; A second anti-vibration arm for fixing the object at the second side opposite to the first anti-vibration arm and the first side; A first joint rotatably fixing one end of the first dustproof arm to the support so that a distance from the object can be adjusted; A second joint rotatably fixing one end of the second anti-vibration arm to the support so that the distance from the object can be adjusted; And And a third anti-vibration arm that can protrude from the center of the upper surface of the support to fix the lower portion of the object. The portion of claim 4, wherein the first and second anti-vibration arms further include first and second protrusions, respectively, in portions extending inwardly of the support, and the third anti-vibration arms extend inwardly of the support. A pair of third protrusions on both sides of The dustproof opening, A first plate-shaped slider having one end fixed to an inner wall of the support and including a pair of sliding grooves in which the first protrusion and the third protrusion are respectively slid; A second plate-shaped slider having one end fixed to an inner wall of the support part and including a pair of sliding grooves in which the second protrusion and the third protrusion are respectively slid; And Through-bolt cutting system for a gas turbine, characterized in that it further comprises a cylinder which is connected to the extending portion of the support of the third anti-vibration arm to reciprocate the third anti-vibration arm. The through-bolt cutting system for a gas turbine according to claim 5, further comprising a stroke control unit connected to the cylinder and controlling a stroke of the cylinder according to the diameter of the object. 6. The through-bolt cutting system for a gas turbine according to claim 5, further comprising a safety valve connected to the cylinder and capable of fixing the stroke of the cylinder to fix the first to third anti-vibration arms. . The through-bolt cutting system for a gas turbine according to claim 4, wherein there are a plurality of dustproof holes for fixing the object. The through-bolt cutting system for a gas turbine according to claim 4, wherein the length of the object is 2 m or more and 10 m or less, and the ratio of the length and the diameter of the object is 20: 1 to 100: 1. The through-bolt cutting system for a gas turbine according to claim 4, wherein the material of the object is an Inconel 718 material. Rotating the object; Sensing vibration, bending, and distortion data generated during rotation of the object; Arranging an anti-vibration port for preventing vibration, warpage and distortion during rotation of the object based on the sensed vibration, warpage and distortion data; Sensing an external shape of the object while cutting the object; And And comparing the external shape of the sensed object with a previously input target shape of the object to detect a generation point and size of a machining error, and automatically correcting the machining error.

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