Numerical control deep hole drilling and boring machine for machining steam turbine rotor

Abstract

The invention relates to the related technical field of numerical control drilling and boring machines, and discloses a numerical control deep hole drilling and boring machine for processing a steam turbine rotor, which is characterized in that two groups of side slide rails are arranged on a concrete base table, and a clamping and fixing device and a deep hole drilling device are respectively and movably mounted at two ends of the two groups of side slide rails; two sets of sliding supporting bases are arranged between the clamping and fixing device and the deep hole drilling device, the clamping and fixing device is partially provided with a four-jaw chuck, and four jaws of the four-jaw chuck can be independently adjusted and can adapt to steam turbine rotors of different shapes and sizes. Through the bent filter plate, cuttings in cooling liquid can be effectively filtered through the bent filter plate, the cuttings are prevented from entering the liquid drainage branch pipe to cause blockage, and smoothness of a cooling liquid circulation channel is guaranteed; and the bending collecting plate is driven by the rotating middle shaft to rotate, cuttings in the front end part can be actively poked into the chip removal branch pipes, and the initiative and efficiency of collecting the cuttings are improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field related to numerical control drilling and boring machine, more specifically, particularly relates to a kind of for processing steam turbine rotor numerical control deep hole drilling and boring machine. BACKGROUND

[0002] Steam turbine rotor as the core component of steam turbine, its processing quality has a vital influence on the performance of steam turbine.In steam turbine rotor processing, deep hole machining is one of the more difficult processes.Due to the closed environment of deep hole machining, chip discharge is not smooth, which can cause hole wall scratch, and the cooling is not timely, which can aggravate tool wear, affect the machining accuracy and efficiency.The existing drilling and boring machine has defects in chip removal and cooling, which is difficult to meet the demand of high-precision machining of steam turbine rotor. In the prior art, there are three problems in the chip processing of traditional equipment.First, the separation of chips and cooling liquid is not complete, and the chips are easy to mix into the circulation system to cause pipeline blockage, which seriously affects the continuity of machining, and the efficiency of the existing simple filtering structure is low, which is difficult to deal with a large amount of fine chips, and is easy to cause secondary accumulation.Second, the chip conveying power is insufficient and the stability is poor, and the traditional spiral conveying device is easy to slip and jam when conveying chips with high viscosity or irregular shape, which can cause chip retention in the chip removal channel, affect the machining accuracy, and also can aggravate tool wear.Third, the chip removal speed and cooling effect are difficult to balance, and the existing equipment is mainly discharged at normal pressure, and the chip pushing force is limited, which can easily cause blockage in the later stage of deep hole machining, and the cooling liquid recycling rate is low, which is difficult to continuously and effectively cool the machining area, affecting the tool life and machining surface quality.

[0003] Therefore, in view of the above problems, the existing structure and defects are improved, and a numerical control deep hole drilling and boring machine for processing steam turbine rotor is provided to achieve more practical and valuable purposes. SUMMARY

[0004] The present application provides a numerical control deep hole drilling and boring machine for processing steam turbine rotor to overcome the above-mentioned defects in the prior art.

[0005] The purpose and effect of the numerical control deep hole drilling and boring machine for processing steam turbine rotor are achieved by the following specific technical means: A numerical control deep hole drilling and boring machine for processing steam turbine rotor, comprising a concrete base, two groups of side sliding rails are arranged on the concrete base, two groups of side sliding rails are respectively movably installed with clamping fixing devices and deep hole drilling devices at both ends, two groups of sliding support bases are arranged between the clamping fixing devices and the deep hole drilling devices; Its characterized in that: the clamping fixture part is equipped with four-jaw chuck, four clamping claws of four-jaw chuck can be independently adjusted, can adapt to different shape and size of steam turbine rotor, realize clamping to steam turbine rotor, deep hole drilling device part is equipped with turning chip removal device, turning chip removal device includes chip filtering and collecting device, separation rotating conveying device and accelerated discharge conveying device; Chip filtering and collecting device realizes separation, collection and conveying of cutting chips generated by turning tool bit through heat dissipation water flow, accelerated discharge conveying device realizes water spraying and accelerated conveying of cutting chips collected by chip filtering and collecting device through separation rotating conveying device.

[0006] Further technical solutions, the deep hole drilling device includes a second mobile base, the second mobile base provides an installation platform for other components of the deep hole drilling device and drives them to move on the side slide rail, a conversion box is fixedly installed above the second mobile base, a gear head is rotatably installed in the conversion box, a turning chip removal device is threadedly installed at one end of the gear head, a tooth head is provided at the other end of the gear head, the tooth head is a ring body in the middle, the gear head is hollow in the inside, the turning chip removal device is in communication with the inside of the gear head, a rotating motor is fixedly installed above the conversion box, and a gear strip is cooperated between the rotating motor and the tooth head.

[0007] Further technical solutions, the turning chip removal device includes a chip removal feeding pipe and a front end portion, one end of the chip removal feeding pipe is threadedly connected with the gear head, the other end of the chip removal feeding pipe is threadedly connected with the front end portion, three turning inner tool bits are provided at the front end of the front end portion, the chip filtering and collecting device is provided in the inside of the front end portion, the separation rotating conveying device and the accelerated discharge conveying device are installed in the inside of the chip removal feeding pipe.

[0008] Further technical solutions, the chip removal feeding pipe includes an outer pipe and an inner pipe, the outer pipe and the inner pipe are threadedly connected with the front end portion, the inner pipe is fixedly installed with the chip filtering and collecting device at one end, the chip filtering and collecting device includes a chip removal sub-pipe and a liquid discharge sub-pipe, a bending filter plate is provided between the chip removal sub-pipe and the liquid discharge sub-pipe, a bending frame is fixedly connected at the front end of the bending filter plate, a rotating central shaft is provided through the bending frame, a bending collecting plate is fixedly connected to the rotating central shaft, the bending collecting plate rotates in the bending frame, a front spiral blade is fixedly connected to the front end of the rotating central shaft, and the front spiral blade is powered.

[0009] Further technical solutions, the separation rotating conveying device is rotatably installed on the bending filter plate, the separation rotating conveying device includes a spiral conveying piece, the spiral conveying piece is fixedly installed on the outer wall of the rotating central shaft, and a plurality of convex points are provided on the wall of the rotating central shaft.

[0010] Further technical solutions, the chip removal sub-pipe is provided with an accelerated discharge conveying device away from the side of the front spiral vane, the accelerated discharge conveying device comprises an outer discharge pipe, the inside of the outer discharge pipe is hollow, the two sides of the outer discharge pipe are provided with a plurality of side discharge ports, the side discharge ports and the inner cavity of the outer discharge pipe are provided with one-way pressure relief valves, the outer discharge pipe is fixedly installed on the side close to the spiral conveying piece and is provided with an outer cover plate, the outer side of the outer cover plate is rotatably provided with a middle gear, the middle gear is vertically provided with a tail end gear and a first gear, and the tail end gear is fixedly installed on a rotating middle shaft.

[0011] Further technical solutions, the outer discharge pipe is rotatably installed on the side away from the front spiral vane and is provided with a fixed middle shaft, the fixed middle shaft is rotatably installed on the first gear, the end of the fixed middle shaft is rotatably provided with a piston suction device, the piston suction device is below the outer discharge pipe, and the output end of the piston suction device is in communication with the inner cavity of the outer discharge pipe.

[0012] Further technical solutions, the tooth head comprises a five-angle straight cylinder suction assembly, a central suction cavity is installed in the inside of the five-angle straight cylinder suction assembly, a rotating disc is installed in the middle of the inner wall of the central suction cavity, the outer wall of the rotating disc is fixedly connected with the fixed middle shaft, a rectangular turntable is eccentrically installed on the rotating disc, four groups of connecting rods are hingedly installed on the rectangular turntable, piston heads are hingedly installed at the ends of the connecting rods, the piston heads and four straight cylinder parts of the five-angle straight cylinder suction assembly form cooperative suction, discharge pipes are arranged in the four straight cylinder parts, four groups of the discharge pipes are in communication with the remaining one straight cylinder part of the five-angle straight cylinder suction assembly, the remaining one straight cylinder part of the five-angle straight cylinder suction assembly is in communication with the inner cavity of the outer discharge pipe, a side position liquid pipe is connected to the outer side of the outer discharge pipe, the front end of the side position liquid pipe is connected with the front end part, a front liquid injection port is arranged on the front end part, the front liquid injection port is in communication with the inner cavity of the outer discharge pipe through the side position liquid pipe.

[0013] Further technical solutions, the clamping and fixing device comprises a first moving base, the first moving base slides on the side position slide rail, a transfer box is fixedly installed above the first moving base, one end of the transfer box is fixedly connected with a four-jaw chuck, a driving motor is fixedly installed on the outer side of the transfer box, a transmission chain is connected between the output end of the four-jaw chuck and the output end of the driving motor and penetrates the transfer box, the first moving base and the second moving base are provided with threaded shafts at the bottoms, one end of each threaded shaft is provided with a manual shaking assembly, and the manual shaking assembly drives the first moving base to move horizontally; the bottom of the second moving base is also provided with a transmission threaded shaft, the end of the transmission threaded shaft is provided with a first driving device, and the first driving device is fixedly connected with the transmission threaded shaft.

[0014] Further technical solutions, the outer side of the side position slide rail is provided with a side position auxiliary rail, the side position auxiliary rail is provided with an outer body polishing device, the outer body polishing device comprises a fixing frame, the upper end of the fixing frame is provided with a rotary motor, the rotary motor penetrates the top plate of the fixing frame and is provided with an output shaft, a turning outer cutter is slidably arranged on the output shaft, the outer end of the side position auxiliary rail is also provided with a second driving device, the output end of the second driving device is provided with a rotating shaft, and the rotating shaft is matched with the fixing frame to realize translation.

[0015] Compared with the prior art, the present application has the following beneficial effects: The numerical control deep hole drilling and boring machine for machining steam turbine rotor is provided with a cutting chip filtering and collecting device, and the bending filter plate can effectively filter the cutting chips in the cooling liquid, prevent the cutting chips from entering the liquid discharge branch pipe to cause blockage, and ensure the smoothness of the cooling liquid circulation channel; the bending collecting plate rotates under the driving of the rotating shaft, can actively push the cutting chips in the front end portion into the chip discharge branch pipe, improve the initiative and efficiency of cutting chip collection, reduce the residence time of cutting chips in the machining area, reduce the influence of accumulation on machining from the source, and realize the preliminary separation of cutting chips and cooling liquid.

[0016] The numerical control deep hole drilling and boring machine for machining steam turbine rotor is provided with a separation rotating conveying device, the spiral conveying piece rotates with the rotating shaft, and can stably convey the cutting chips in the chip discharge branch pipe forward; the multiple groups of convex points on the wall body of the rotating shaft increase the friction between the cutting chips, effectively prevent the cutting chips from slipping during the conveying process, ensure the stability and continuity of the cutting chip conveying, and lay a foundation for subsequent accelerated discharge.

[0017] The numerical control deep hole drilling and boring machine for machining steam turbine rotor is provided with an accelerated discharge conveying device, and the one-way pressure relief valve ensures that the side discharge port is opened only when the internal pressure of the liquid discharge outer pipe reaches a certain pressure, forms a high-pressure jet flow, generates a strong pushing force on the cutting chips, significantly improves the cutting chip discharge speed, and avoids the cutting chips from being retained and accumulated in the pipeline; the adsorption force generated by the piston adsorption device cooperates with the high-pressure jet to enhance the flowability of the cutting chip and cooling liquid mixed fluid, further ensures smooth discharge of the cutting chips, and part of the cooling liquid can flow back to realize recycling, thereby strengthening the cooling and flushing effect. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only show some embodiments of the application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0019] The application will be further described below in combination with the drawings and embodiments.

[0020] Figure 1 The whole appearance structure schematic diagram of the present application; Figure 2 The whole side view structure schematic diagram of the present application; Figure 3 The whole top view structure schematic diagram of the present application; Figure 4 The whole second appearance structure schematic diagram of the present application; Figure 5 The whole first appearance structure schematic diagram of the turning chip removal device in the present application; Figure 6 The whole front view structure schematic diagram of the turning chip removal device in the present application; Figure 7 The whole second appearance structure schematic diagram of the turning chip removal device in the present application; Figure 8 The whole side view structure schematic diagram of the turning chip removal device in the present application; Figure 9 The explosion structure schematic diagram of the turning chip removal device in the present application; Figure 10 The side view structure schematic diagram of the turning chip removal device in the present application; Figure 11 The front view structure schematic diagram of the piston suction device in the present application; Figure 12 The appearance structure schematic diagram of the piston suction device in the present application.

[0021] Explanation of the reference signs: Concrete base 11, clamping and fixing device 12, deep hole drilling device 13, outer body polishing device 14, first driving device 15, second driving device 16, driving motor 17, transmission chain 18, first moving base 19, manual shaking assembly 20, adapter box 21, four-jaw chuck 22, fixing frame 23, turning outer tool head 24, rotary motor 25, adapter box 26, gear head 27, turning chip removal device 28, tooth head 29, rotary motor 30, gear strip 31, second moving base 32, sliding support base 33, side sliding rail 34, chip removal feeding pipe 35, front end part 36, turning inner tool head 37, outer pipe 38, inner pipe 39, front liquid injection port 40, liquid discharge outer pipe 41, side liquid pipe 42, front helical blade 43, chip removal sub-pipe 44, liquid discharge sub-pipe 45, side discharge port 46, fixed middle shaft 47, first gear 48, piston suction device 49, outer cover plate 50, rotating middle shaft 51, bending frame 52, bending collection plate 53, helical conveying piece 54, tail end gear 55, middle gear 56, five-cornered straight cylinder suction assembly 57, central suction cavity 58, rotary disc 59, rectangular turntable 60, discharge pipe 61, connecting rod 62, piston head 63, suction port 64. Detailed Implementation

[0022] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0023] In the description of this invention, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0025] As attached Figure 1 To be continued Figure 12 As shown: This invention provides a CNC deep hole drilling and boring machine for machining turbine rotors, including a concrete base 11. The concrete base 11 provides a stable installation foundation for the entire machine, ensuring its stability during operation and reducing the impact of vibration on machining accuracy. Two sets of side slide rails 34 are provided on the concrete base 11. These side slide rails 34 guide the movement of the clamping and fixing device 12 and the deep hole drilling device 13, enabling them to move smoothly and accurately. The clamping and fixing device 12 and the deep hole drilling device 13 are movably mounted at both ends of the two sets of side slide rails 34, respectively. Two sets of sliding support bases 33 are provided between the clamping and fixing device 12 and the deep hole drilling device 13. These sliding support bases 33 provide auxiliary support for the turbine rotor, preventing bending deformation due to its own weight and ensuring the straightness of the machining.

[0026] The clamping fixture 12 is partially provided with a four-jaw chuck 22, which clamps the steam turbine rotor, and the four clamping jaws of the four-jaw chuck 22 can be independently adjusted to adapt to steam turbine rotors of different shapes and sizes, and the clamping is firm and reliable to ensure that the steam turbine rotor does not displace during machining. The deep hole drilling device 13 is partially provided with a turning chip removal device 28, which includes a chip filtering and collecting device, a separation and rotation conveying device, and an accelerated discharge conveying device. The chip filtering and collecting device separates, collects and conveys the chips generated by the turning tool bit through the heat dissipation water flow, separates and collects the chips from the water body by using the power of the water flow, and the water flow also cools the tool bit. The accelerated discharge conveying device sprays water to accelerate the conveying of the chips collected by the chip filtering and collecting device through the separation and rotation conveying device, further improves the discharge speed of the chips, and avoids chip accumulation.

[0027] Preferably, referring to the accompanying drawings Figure 4 The deep hole drilling device 13 includes a second movable base 32, which provides a mounting platform for other components of the deep hole drilling device 13 and drives them to move on the side sliding rail 34. The second movable base 32 is fixedly installed with a conversion box 26 above, which protects the internal gear head 27 and other components, and provides stable support for the rotation of the gear head 27. The gear head 27 is rotatably installed inside the conversion box 26, and the rotation of the gear head 27 can drive the turning chip removal device 28 to rotate, realizing the drilling action. One end of the gear head 27 is threadedly installed with the turning chip removal device 28, and the threaded connection facilitates the installation, disassembly and replacement of the turning chip removal device 28. The other end of the gear head 27 is provided with a gear head 29, and the gear head 29 is hollow, and the turning chip removal device 28 communicates with the inside of the gear head 27, which facilitates the circulation of chips and cooling liquid. The conversion box 26 is fixedly installed with a rotating motor 30 above, which provides power for the rotation of the gear head 27. The rotating motor 30 is matched with the gear strip 31 between the gear head 29, and the power of the rotating motor 30 is transmitted to the gear head 29 through the gear strip 31, thereby driving the gear head 27 to rotate, which has high and stable transmission efficiency.

[0028] Preferably, referring to the accompanying drawings Figure 7 to the accompanying drawings Figure 10, the turning chip removal device 28 includes a chip removal feed pipe 35 and a front end portion 36, one end of the chip removal feed pipe 35 is threadedly connected with the gear head 27, facilitating installation and disassembly. The other end of the chip removal feed pipe 35 is threadedly connected with the front end portion 36, also facilitating replacement and maintenance of the front end portion 36. The front end of the front end portion 36 is provided with three sets of turning inner tool bits 37, which work cooperatively to improve drilling efficiency and processing quality. The inside of the front end portion 36 is provided with the chip filtering and collecting device, which can collect chips near the source of chip generation, reducing the residence time of chips in the hole. The inside of the chip removal feed pipe 35 is provided with a separation rotating conveying device and an accelerated discharge conveying device, so that the chips can be effectively conveyed out of the chip removal feed pipe 35.

[0029] Preferably, referring to the accompanying drawings Figure 7 to the accompanying drawings Figure 10 , the chip removal feed pipe 35 includes an outer pipe 38 and an inner pipe 39, which form a double-layer structure, separating the flow path of the cooling liquid from the conveying path of the chips to avoid mutual interference. The outer pipe 38 and the inner pipe 39 are threadedly connected with the front end portion 36, facilitating assembly and maintenance. One end of the inner pipe 39 is fixedly provided with a chip filtering and collecting device, which includes a chip discharge sub-pipe 44 and a liquid discharge sub-pipe 45, the chip discharge sub-pipe 44 is used for conveying chips, and the liquid discharge sub-pipe 45 is used for discharging cooling liquid, realizing separate conveying of chips and cooling liquid. A bending filter plate is arranged between the chip discharge sub-pipe 44 and the liquid discharge sub-pipe 45, which can filter out chips in the cooling liquid to prevent chips from entering the liquid discharge sub-pipe 45 and causing blockage. The front end of the bending filter plate is fixedly connected with a bending frame 52, which provides mounting support for the bending filter plate, the rotating central shaft 51 and other components. The rotating central shaft 51 is arranged to penetrate through the bending frame 52, providing shaft support for the rotation of the front helical blade 43, the bending collecting plate 53 and the helical conveying piece 54. The rotating central shaft 51 is fixedly connected with the bending collecting plate 53, which rotates in the bending frame 52, and the bending collecting plate 53 can push the chips in the front end portion 36 into the chip discharge sub-pipe 44 when it rotates, improving the efficiency of chip collection. The front end of the rotating central shaft 51 is fixedly connected with the front helical blade 43, which is driven to rotate by the impact of the backflow of the cooling liquid, thereby driving the rotating central shaft 51 and related components to rotate, without the need for an additional power source, saving energy and being highly efficient.

[0030] Preferably, referring to the accompanying drawings Figure 7 to the accompanying drawings Figure 10, the bending filter plate is provided with a separation rotary conveying device which is rotatably installed, the separation rotary conveying device comprises a spiral conveying piece 54 which is fixedly installed on the outer wall of a rotary middle shaft 51, and the spiral conveying piece 54 can convey the cutting chips in the chip separation sub-pipe 44 forward when rotating, and the conveying is stable and reliable. The rotary middle shaft 51 is provided with a plurality of convex points on the wall body, the convex points can increase the friction between the rotary middle shaft 51 and the cutting chips, prevent the cutting chips from slipping during the conveying process, and ensure the conveying effect.

[0031] Preferably, referring to the accompanying drawings Figure 7 to the accompanying drawings Figure 10 , the chip separation sub-pipe 44 and the liquid discharge sub-pipe 45 are provided with an accelerated discharge conveying device on the side away from the front spiral blade 43, the accelerated discharge conveying device comprises a liquid discharge outer pipe 41 which provides a channel for the mixed conveying of the cutting chips and the cooling liquid. The liquid discharge outer pipe 41 is hollow inside, and the two sides of the liquid discharge outer pipe 41 are provided with a plurality of side discharge ports 46 which are used for discharging the cutting chips and the cooling liquid. A one-way pressure relief valve is arranged between the side discharge port 46 and the internal cavity of the liquid discharge outer pipe 41, the one-way pressure relief valve can ensure that the liquid discharge outer pipe 41 is discharged only after a certain pressure is reached inside, improve the ejection pressure, enhance the pushing force on the cutting chips, and prevent external impurities from entering at the same time. The liquid discharge outer pipe 41 is fixedly installed on the side close to the spiral conveying piece 54 and is provided with an outer cover plate 50 which plays a sealing and protective role on the internal gear components. The outer side of the outer cover plate 50 is rotatably provided with a middle gear 56, the middle gear 56 is vertically arranged and provided with a tail end gear 55 and a first gear 48, the power of the tail end gear 55 is transmitted to the first gear 48 through the middle gear 56, and the power is transmitted in a direction. The tail end gear 55 is fixedly installed on the rotary middle shaft 51 and rotates together with the rotary middle shaft 51 to provide power for the middle gear 56.

[0032] Preferably, referring to the accompanying drawings Figure 11 to the accompanying drawings Figure 12 , the liquid discharge sub-pipe 45 is rotatably installed on the side away from the front spiral blade 43 and is provided with a fixed middle shaft 47 which provides support for the rotation of the first gear 48 and the piston adsorption device 49. The fixed middle shaft 47 is rotatably installed on the first gear 48, and the end of the fixed middle shaft 47 is rotatably provided with the piston adsorption device 49, the piston adsorption device 49 can generate adsorption force to assist the flow of the cooling liquid and the cutting chips. The piston adsorption device 49 is below the liquid discharge outer pipe 41, and the output end of the piston adsorption device 49 is in communication with the inside of the liquid discharge outer pipe 41, so that the piston adsorption device 49 can effectively act on the fluid in the liquid discharge outer pipe 41.

[0033] Preferably, referring to the accompanying drawings Figure 11 to the accompanying drawings Figure 12The tooth head 29 comprises a pentagonal straight cylinder adsorption assembly 57, which provides installation space for the piston head 63 and other components, and forms multiple independent cavities for fluid storage and delivery. The pentagonal straight cylinder adsorption assembly 57 is internally provided with a central adsorption cavity 58, which provides space for rotation of the rotating disc 59. The rotating disc 59 is mounted in the middle of the inner wall of the central adsorption cavity 58, and the outer wall of the rotating disc 59 is fixedly connected with the fixed central shaft 47 and rotates together with the fixed central shaft 47 to drive the rectangular turntable 60 to rotate. The rectangular turntable 60 is eccentrically mounted on the rotating disc 59, and four groups of connecting rods 62 are hingedly mounted on the rectangular turntable 60. The end of the connecting rod 62 is hingedly provided with a piston head 63. Through eccentric rotation of the rectangular turntable 60, the connecting rod 62 is driven to move, and then the piston head 63 is reciprocated in the straight cylinder portion to realize the functions of adsorption and discharge of fluid. The piston head 63 is cooperatively adsorbed with four straight cylinder portions of the pentagonal straight cylinder adsorption assembly 57. Four discharge pipes 61 are arranged in the four straight cylinder portions, and four groups of the discharge pipes 61 are in communication with the remaining one straight cylinder portion of the pentagonal straight cylinder adsorption assembly 57 to realize the functions of fluid convergence and delivery. The remaining one straight cylinder portion of the pentagonal straight cylinder adsorption assembly 57 is in communication with the inside of the liquid discharge outer pipe 41 to send the converged fluid into the liquid discharge outer pipe 41. The liquid discharge outer pipe 41 is externally connected with a side liquid pipe 42, the front end of the side liquid pipe 42 is connected with the front end portion 36, the front end portion 36 is provided with a front liquid injection port 40, the front liquid injection port 40 is in communication with the inside of the liquid discharge outer pipe 41 through the side liquid pipe 42, so that the cooling liquid can be circulated back to the front end portion 36 and sprayed out of the front liquid injection port 40 to cool and flush the machining portion again.

[0034] Preferably, referring to the accompanying drawings Figure 11 to the accompanying drawings Figure 12The clamping fixing device 12 comprises a first movable base 19 which slides on the side slide rail 34 to drive the clamped steam turbine rotor to move. The first movable base 19 is fixedly provided with an adapter box 21 above. The adapter box 21 provides protection and support for transmission components between the driving motor 17 and the four-jaw chuck 22. One end of the adapter box 21 is fixedly connected with the four-jaw chuck 22. The outer side of the adapter box 21 is fixedly provided with the driving motor 17. The output end of the four-jaw chuck 22 penetrates through the adapter box 21 and is connected with the output end of the driving motor 17 through the transmission chain 18. The driving motor 17 drives the transmission chain 18 to move, thereby driving the four-jaw chuck 22 to act, so as to clamp and loosen the steam turbine rotor. The first movable base 19 and the second movable base 32 are provided with threaded shafts at the bottom. One end of the threaded shaft is provided with a manual shaking assembly 20. The manual shaking assembly 20 drives the first movable base 19 to move horizontally. The manual shaking assembly 20 is simple to operate and can accurately control the moving distance of the first movable base 19. The bottom of the second movable base 32 is also provided with a transmission threaded shaft. The end of the transmission threaded shaft is provided with a first driving device 15. The first driving device 15 is fixedly connected with the transmission threaded shaft. The first driving device 15 can automatically drive the second movable base 32 to move, thereby improving the degree of automation.

[0035] Preferably, referring to the accompanying ​ to the accompanying ​ The outer side of the side slide rail 34 is provided with a side sub-rail. The side sub-rail is provided with an outer body polishing device 14. The outer body polishing device 14 can polish the outer surface of the steam turbine rotor, thereby improving the surface quality of the steam turbine rotor. The outer body polishing device 14 comprises a fixed frame 23 which provides mounting support for components such as a rotary motor 25. The upper end of the fixed frame 23 is provided with the rotary motor 25. The rotary motor 25 penetrates through the top plate of the fixed frame 23 and is provided with an output shaft. The output shaft is slidably provided with a turning outer cutter head 24. The rotary motor 25 drives the output shaft to rotate, thereby causing the turning outer cutter head 24 to rotate to realize polishing. The turning outer cutter head 24 can be slidably adjusted in position to adapt to different polishing requirements. The outer end of the side sub-rail is also provided with a second driving device 16. The output end of the second driving device 16 is provided with a rotating shaft. The rotating shaft cooperates with the fixed frame 23 to realize translation. The second driving device 16 can drive the fixed frame 23 to move on the side sub-rail, thereby adjusting the position of the outer body polishing device 14 to meet the polishing requirements of different parts.

[0036] The specific use method of the present application is as follows: In the use of the device processing steam turbine rotor, the preparatory work needs to be strictly in accordance with the equipment structure characteristics operation. Concrete base 11 for the whole equipment provides a stable installation foundation, can effectively reduce the vibration in the process of equipment operation, for subsequent processing precision provides the foundation guarantee. First, the device tooth head 29 end and the external chip removal pipeline and sewage pipeline precision communication, this connection needs to ensure good sealing, avoid the cooling liquid leakage and cutting chip discharge not smooth, for subsequent cutting chip discharge and cooling liquid circulation to build a stable channel. Then, the steam turbine rotor is placed in the clamping range of four jaw chuck 22, four jaw chuck 22 four clamping jaw can be independently adjusted, can adapt to different shape and size of steam turbine rotor. By controlling the steering of the drive motor 17, the power of the drive motor 17 is transmitted to the output end of the four jaw chuck 22 through the transmission chain 18, realizing the locking and loosening operation of the four jaw chuck 22. In the locking process, it is necessary to ensure that the four clamping jaws are uniformly stressed, so that the steam turbine rotor does not displace in the process of machining, ensuring the stability of the machining.

[0037] When the steam turbine rotor is firmly clamped on the four jaw chuck 22, the two groups of sliding support base 33 will play an auxiliary supporting role on the steam turbine rotor. Because the steam turbine rotor itself is heavy, long time clamping is easy to produce bending deformation, sliding support base 33 can effectively disperse its weight, prevent bending deformation, ensure the straightness of the machining, lay the foundation for the accuracy of deep hole machining. At this time, the deep hole drilling device 13 starts the preparation work, which is installed on the second moving base 32. The second moving base 32 can move smoothly on the side slide rail 34, which provides accurate guidance for its movement, ensuring that the turning chip removal device 28 can be accurately aligned with the central axis of the steam turbine rotor.

[0038] When the punching operation starts, the rotating motor 30 starts to operate, and the power output by the rotating motor 30 is transmitted to the tooth head 29 through the gear strip 31. The tooth head 29 is connected with the gear head 27, and then drives the gear head 27 to rotate stably in the conversion box 26. The conversion box 26 protects the internal components of the gear head 27 and provides stable support for its rotation. The rotation of the gear head 27 drives the turning chip removal device 28 connected with it to rotate, and the three groups of turning inner cutter heads 37 at the front end 36 of the turning chip removal device 28 work cooperatively to cut the central axis of the steam turbine rotor, realizing the punching action. The reasonable layout of the three groups of turning inner cutter heads 37 can improve the drilling efficiency and ensure the flatness of the machined surface. As the punching depth increases, the operator drives the threaded shaft at the bottom of the first moving base 19 to rotate by hand shaking the manual shaking assembly 20, thereby driving the clamping and fixing device 12 to move horizontally on the side slide rail 34, and cooperating with the deep hole drilling device 13 to realize deep punching. The manual shaking assembly 20 is simple to operate and can accurately control the moving distance of the first moving base 19, ensuring the accuracy of the punching depth.

[0039] In the process of drilling, the processing of chips is the key to ensure the continuity and accuracy of processing. The components of the turning chip removal device 28 work together to show high efficiency in chip processing. The turning chip removal device 28 is composed of a chip removal feeding pipe 35 and a front end part 36. The chip removal feeding pipe 35 includes an outer pipe 38 and an inner pipe 39, and the double-layer structure formed by the outer pipe 38 and the inner pipe 39 separates the flow path of the cooling liquid from the conveying path of the chips, avoiding mutual interference. When the turning inner tool head 37 rotates, the cooling liquid enters from the gap between the outer pipe 38 and the inner pipe 39, accurately flows to the turning part, cools the tool head, prevents the tool head from being damaged due to high temperature, and improves the machining accuracy. The cooling liquid forms a backflow after hitting the hole wall of the turbine rotor shaft. The backflow of the cooling liquid impacts the front spiral blade 43 in the front end part 36. The front spiral blade 43 starts to rotate after being impacted by the force. This driving method using the power of water flow itself does not require an additional power source, which is energy-saving and efficient.

[0040] The rotation of the front spiral blade 43 drives the rotation of the rotating shaft 51. The rotating shaft 51 penetrates the bending frame 52, which provides stable mounting support for the bending filter plate and the rotating shaft 51. The rotation of the rotating shaft 51 synchronously drives the operation of the chip filtering and collecting device, the separation rotating conveying device, and the acceleration discharge conveying device. The cooling liquid enters the inside of the liquid discharge branch pipe 45 during the backflow process. The bending filter plate between the chip removal branch pipe 44 and the liquid discharge branch pipe 45 plays a filtering role, intercepting the chips in the cooling liquid to prevent the chips from entering the liquid discharge branch pipe 45 and causing blockage. The intercepted chips accumulate at the front end of the turning inner tool head 37. Under the combined action of the continuous impact of the water flow and the suction force generated by the rotation of the front spiral blade 43, the chips are smoothly sucked into the inside of the front end part 36.

[0041] After the chips enter the inside of the front end part 36, the bending collection plate 53 fixedly connected to the rotating shaft 51 rotates in the bending frame 52. The rotation of the bending collection plate 53 can actively push the chips in the front end part 36 into the chip removal branch pipe 44, improving the chip collection efficiency and avoiding the accumulation of chips in the front end part 36 affecting the processing. The spiral conveying piece 54 inside the chip removal branch pipe 44 is fixedly installed on the outer wall of the rotating shaft 51 and rotates with the rotating shaft 51 to stably convey the chips in the chip removal branch pipe 44 forward. The multiple groups of convex points on the wall of the rotating shaft 51 increase the friction between the rotating shaft 51 and the chips, effectively preventing the chips from slipping during conveying, and ensuring the stability and continuity of the conveying.

[0042] When the middle shaft 51 rotates, the tail gear 55 at the end of the middle shaft 51 also rotates, the tail gear 55 is meshed with the middle gear 56, the first gear 48 vertically arranged on the middle gear 56 rotates under the driving of the middle gear 56, the first gear 48 is installed on the fixed middle shaft 47, and the fixed middle shaft 47 is further driven to rotate. The rotation of the fixed middle shaft 47 drives the rotation of the rotating disc 59 fixedly connected with the fixed middle shaft 47 in the central adsorption cavity 58, the rectangular rotating disc 60 eccentrically installed on the rotating disc 59 rotates, and the piston head 63 is driven by the four groups of connecting rods 62 to make reciprocating motion in the four straight cylinder parts of the five-angle straight cylinder adsorption assembly 57, so as to generate compression and adsorption effects. The five-angle straight cylinder adsorption assembly 57 provides installation space for the piston head 63 and other components, and forms a plurality of independent cavities for storing and conveying fluid.

[0043] The liquid discharge outer pipe 41 is provided with a plurality of side discharge ports 46 on both sides, and a one-way pressure relief valve between the side discharge port 46 and the internal cavity of the liquid discharge outer pipe 41 can ensure that the internal cavity of the liquid discharge outer pipe 41 is opened only when a certain pressure is reached. When the pressure reaches the set value, the one-way pressure relief valve is opened, the high-pressure cooling liquid strongly impacts the chips, further improves the discharge speed of the chips, avoids the accumulation of the chips, and accelerates the heat exchange flow of the cooling liquid, thereby improving the cooling effect. In addition, the side liquid pipe 42 connected to the outside of the liquid discharge outer pipe 41 conveys part of the cooling liquid to the front end part 36, and finally sprays out through the front liquid outlet 40 provided on the front end part 36, thereby washing the inner hole after turning, cleaning the residual chips, and ensuring the cleanliness of the inner hole.

[0044] If the outer surface of the steam turbine rotor needs to be polished, the outer body polishing device 14 on the side position auxiliary rail can be started. The fixed frame 23 of the outer body polishing device 14 provides installation support for components such as the rotating motor 25, the output end of the second driving device 16 is matched with the fixed frame 23 through a rotating shaft, the fixed frame 23 is driven to translate on the side position auxiliary rail, and is adjusted to a suitable polishing position. After the rotating motor 25 is started, the output shaft drives the turning outer cutter head 24 to rotate, the turning outer cutter head 24 can be adjusted in position on the output shaft to adapt to different polishing requirements, so as to complete the polishing of the outer surface of the steam turbine rotor and improve the surface quality of the steam turbine rotor.

[0045] During the whole machining process, the cooperation between the components is precise and efficient, from the clamping and fixing of the steam turbine rotor to the deep hole machining, chip processing and outer surface polishing, each link fully plays its own function, and the machining precision, efficiency and quality are guaranteed.

[0046] The embodiments of the present application are presented by way of example and description, and are not intended to be exhaustive or to limit the application to the form disclosed. Many modifications and variations will be apparent to those skilled in the art. Embodiments are chosen and described in order to best explain the principles of the application and its practical application, and to thereby enable others skilled in the art to best utilize the application in various embodiments and with various modifications as are suited to the particular use contemplated.

Claims

1. A numerical control deep hole drilling and boring machine for processing steam turbine rotor, comprising a concrete base (11), two groups of side slide rails (34) are arranged on the concrete base (11), two ends of the two groups of side slide rails (34) are movably provided with clamping and fixing devices (12) and deep hole drilling devices (13) respectively, two groups of sliding support bases (33) are arranged between the clamping and fixing devices (12) and the deep hole drilling devices (13), characterized in that: The clamping and fixing devices (12) are partially provided with four-jaw chucks (22), four clamping jaws of the four-jaw chucks (22) can be independently adjusted to adapt to steam turbine rotors of different shapes and sizes, and the steam turbine rotors are clamped; The deep hole drilling devices (13) are partially provided with turning and chip removal devices (28), the turning and chip removal devices (28) comprise chip filtering and collecting devices, separation and rotation conveying devices and acceleration and discharge conveying devices; The chip filtering and collecting devices separate, collect and convey the chips generated by the turning tool head through the heat dissipation water flow, and the acceleration and discharge conveying devices accelerate and convey the chips collected by the chip filtering and collecting devices through the separation and rotation conveying devices.

2. The numerical control deep hole drilling and boring machine for processing steam turbine rotor according to claim 1, characterized in that: The deep hole drilling devices (13) comprise second moving bases (32), the second moving bases (32) provide installation platforms for other components of the deep hole drilling devices (13) and drive them to move on the side slide rails (34), conversion boxes (26) are fixedly installed above the second moving bases (32), gear heads (27) are rotatably installed in the conversion boxes (26), turning and chip removal devices (28) are threadedly installed at one end of the gear heads (27), tooth heads (29) are arranged at the other end of the gear heads (27), rotating motors (30) are fixedly installed above the conversion boxes (26), and gear strips (31) cooperate between the rotating motors (30) and the tooth heads (29).

3. The CNC deep hole drilling and boring machine for machining the steam turbine rotor according to claim 2, characterized in that: The turning and chip removal devices (28) comprise chip removal feeding pipes (35) and front end portions (36), one end of the chip removal feeding pipes (35) is threadedly connected with the gear heads (27), the other end of the chip removal feeding pipes (35) is threadedly connected with the front end portions (36), three groups of turning inner tool heads (37) are arranged at the front end portions of the front end portions (36), the chip filtering and collecting devices are arranged in the front end portions (36), and the separation and rotation conveying devices and the acceleration and discharge conveying devices are installed in the chip removal feeding pipes (35).

4. The CNC deep hole drilling and boring machine for machining the steam turbine rotor according to claim 3, characterized in that: The chip removal feed pipe (35) comprises an outer pipe (38) and an inner pipe (39), both of which are in threaded connection with the front end (36), and one end of the inner pipe (39) is fixedly provided with a chip filtering and collecting device; the chip filtering and collecting device comprises a chip removal sub-pipe (44) and a liquid removal sub-pipe (45), and a bent filter plate is arranged between the chip removal sub-pipe (44) and the liquid removal sub-pipe (45), the front end of the bent filter plate is fixedly connected with a bent frame (52), a rotating central shaft (51) is arranged through the bent frame (52), a bent collecting plate (53) is fixedly connected to the rotating central shaft (51), the bent collecting plate (53) rotates in the bent frame (52), and a front spiral blade (43) is fixedly connected to the front end of the rotating central shaft (51), and the front spiral blade (43) is driven by power.

5. The CNC deep hole drilling and boring machine for machining the steam turbine rotor according to claim 4, characterized in that: A separation rotating conveying device is rotatably arranged on the bent filter plate, the separation rotating conveying device comprises a spiral conveying piece (54), the spiral conveying piece (54) is fixedly arranged on the outer wall of the rotating central shaft (51), and a plurality of convex points are arranged on the wall of the rotating central shaft (51).

6. The CNC deep hole drilling and boring machine for machining the steam turbine rotor according to claim 5, characterized in that: An accelerated discharge conveying device is arranged on one side of the chip removal sub-pipe (44) and the liquid removal sub-pipe (45) away from the front spiral blade (43), the accelerated discharge conveying device comprises a liquid discharge outer pipe (41), the liquid discharge outer pipe (41) is hollow, a plurality of side discharge ports (46) are arranged on the two sides of the liquid discharge outer pipe (41), a one-way pressure relief valve is arranged between the side discharge port (46) and the inner cavity of the liquid discharge outer pipe (41), an outer cover plate (50) is fixedly arranged on the side of the liquid discharge outer pipe (41) close to the spiral conveying piece (54), a middle gear (56) is rotatably arranged on the outer side of the outer cover plate (50), a tail end gear (55) and a first gear (48) are vertically arranged on the middle gear (56), and the tail end gear (55) is fixedly arranged on the rotating central shaft (51).

7. The CNC deep hole drilling and boring machine for machining the steam turbine rotor according to claim 6, characterized in that: A fixed central shaft (47) is rotatably arranged on one side of the liquid removal sub-pipe (45) away from the front spiral blade (43), the fixed central shaft (47) is rotatably provided with a first gear (48), and a piston adsorption device (49) is rotatably arranged on the end of the fixed central shaft (47), the piston adsorption device (49) is below the liquid discharge outer pipe (41), and the output end of the piston adsorption device (49) is in communication with the inner part of the liquid discharge outer pipe (41).

8. The CNC deep hole drilling and boring machine for machining the steam turbine rotor according to claim 7, characterized in that: The tooth head (29) includes a five-angle straight cylinder adsorption assembly (57), a central adsorption cavity (58) is arranged inside the five-angle straight cylinder adsorption assembly (57), a rotating disc (59) is arranged in the middle of the inner wall of the central adsorption cavity (58), the outer wall of the rotating disc (59) is fixedly connected with the fixed central shaft (47), a rectangular turntable (60) is arranged eccentrically on the rotating disc (59), four groups of connecting rods (62) are hingedly arranged on the rectangular turntable (60), and piston heads (63) are hingedly arranged at the ends of the connecting rods (62); the piston heads (63) are matched and adsorbed with four straight cylinder parts of the five-angle straight cylinder adsorption assembly (57), a row pipe (61) is arranged in each of the four straight cylinder parts, four groups of row pipes (61) are communicated with the remaining one straight cylinder part of the five-angle straight cylinder adsorption assembly (57), the remaining one straight cylinder part of the five-angle straight cylinder adsorption assembly (57) is communicated with the inside of the liquid discharge outer pipe (41), the side position liquid pipe (42) is connected to the outside of the liquid discharge outer pipe (41), the front end of the side position liquid pipe (42) is connected with the front end portion (36), the front spray liquid port (40) is arranged on the front end portion (36), and the front spray liquid port (40) is communicated with the inside of the liquid discharge outer pipe (41) through the side position liquid pipe (42).

9. The CNC deep hole drilling and boring machine for machining the steam turbine rotor according to claim 8, characterized in that: The clamping and fixing device (12) includes a first moving base (19), the first moving base (19) slides on the side position sliding rail (34), a transfer box (21) is fixedly arranged above the first moving base (19), one end of the transfer box (21) is fixedly connected with a four-jaw chuck (22), a driving motor (17) is fixedly arranged outside the transfer box (21), a transmission chain (18) is connected between the output end of the four-jaw chuck (22) and the output end of the driving motor (17) penetrating the transfer box (21), the first moving base (19) and the bottom of the second moving base (32) are provided with threaded shafts, one end of the threaded shaft is provided with a manual shaking assembly (20), and the manual shaking assembly (20) drives the first moving base (19) to realize horizontal movement; the bottom of the second moving base (32) is also provided with a transmission threaded shaft, and the end of the transmission threaded shaft is provided with a first driving device (15), and the first driving device (15) is fixedly connected with the transmission threaded shaft.

10. The CNC deep hole drilling and boring machine for machining the steam turbine rotor according to claim 9, characterized in that: The outer side of the side position sliding rail (34) is provided with a side position sub-track, and an outer body polishing device (14) is arranged on the side position sub-track, the outer body polishing device (14) comprises a fixing frame (23), the upper end of the fixing frame (23) is provided with a rotary motor (25), the rotary motor (25) penetrates the top plate of the fixing frame (23) and is provided with an output shaft, a turning outer cutter (24) is slidably arranged on the output shaft, and the outer end of the side position sub-track is also provided with a second driving device (16), the output end of the second driving device (16) is provided with a rotating shaft, and the rotating shaft is matched with the fixing frame (23) to realize translation.

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