Device for machining moving blade of steam turbine and engraving and milling machine

Abstract

The utility model provides a device and engraving and milling machine for processing a moving blade of a steam turbine, which comprises a bottom plate, a plurality of positioning blocks are connected to two side surfaces of the bottom plate, and the correspondingly arranged positioning blocks are used for accommodating and positioning the outer side surface of the blade of the steam turbine; a plurality of cushion blocks are connected to the bottom plate, and the cushion blocks are used for supporting steam turbine blades; a plurality of pin rods are connected to the bottom plate and used for positioning the side face of the turbine blade. The pressing plate is arranged above the steam turbine blade, and the pressing plate is used for pressing the end face of the steam turbine blade; the device can accurately position and clamp a workpiece, and the problems of cutter vibration, displacement or deformation and the like in the workpiece machining process are effectively avoided; meanwhile, the device needs to be matched with the engraving and milling machine, high-precision and high-efficiency machining is achieved, the machining precision and efficiency are improved, and the machining cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of antenna manufacturing, specifically relates to a device and precision carving machine of processing steam turbine moving blade. BACKGROUND

[0002] In the field of precision manufacturing in steam turbine manufacturing industry, steam turbine blade as core assembly, its manufacturing precision and quality directly concern the overall performance, operation stability and service life of steam turbine. Especially the blade root arc tooth part, because the structure is complex, the size precision and surface quality requirement is extremely high, has been the technical bottleneck and challenge in the manufacturing process.

[0003] Traditional processing method mainly relies on profile milling cutter to carry out manual or semi-automatic operation, but this way has obvious defects. On the one hand, manual or semi-automatic processing mode is difficult to ensure the consistency and stability of processing precision, is easy to leave vibration, scratch and other defects on the blade surface, seriously influence the aerodynamic performance and structural strength of blade. On the other hand, the deficiency of workpiece positioning and clamping technology is also a big short board of traditional processing mode, and the workpiece is easy to displace or deform in the processing process, further aggravates the decline of processing precision.

[0004] With the continuous progress of manufacturing technology, precision carving machine gradually stands out for its excellent high precision, high efficiency processing capacity. However, it is not easy to apply precision carving machine to the processing field of steam turbine blade root arc tooth. The shape of steam turbine blade is complex and changeable, and puts forward high requirements to tooling design. How to design and manufacture special tooling that can ensure the accurate positioning and clamping of workpiece and effectively avoid the problems such as tool vibration, deformation and the like in the processing process becomes the key factor restricting the wide application of precision carving machine in the field of steam turbine blade processing.

[0005] The disclosure of the above background art content is only used to assist understanding the utility model concept and technical scheme of the utility model, which does not necessarily belong to the prior art of the present patent application, and does not necessarily give technical teaching. In the absence of explicit evidence that the above content has been disclosed before the filing date of the present patent application, the above background art should not be used to evaluate the novelty and inventiveness of the present application. UTILITY MODEL CONTENT

[0006] In order to solve the above technical problem, the utility model provides a device and precision carving machine of processing steam turbine moving blade, the device can accurately position and clamp workpiece, effectively avoid the problems such as tool vibration, displacement or deformation and the like in the processing process of workpiece. At the same time, the device also needs to be able to cooperate with precision carving machine, realize high precision, high efficiency processing, not only improve the processing precision and efficiency, but also reduce the processing cost.

[0007] In order to achieve the above purpose, the technical scheme of the utility model is as follows:

[0008] The utility model provides a kind of device for processing steam turbine moving blade, comprising:

[0009] Bottom plate, the two side surfaces of the bottom plate are connected with multiple positioning blocks, and the positioning blocks are correspondingly arranged to accommodate and position the outer side surface of the steam turbine blade.

[0010] Multiple cushion blocks are connected to the bottom plate, and the cushion blocks are used to support the steam turbine blade.

[0011] Multiple pin rods are connected to the bottom plate, and the pin rods are used to position the side surface of the steam turbine blade.

[0012] A pressing plate is arranged above the steam turbine blade, and the pressing plate is used to press the end surface of the steam turbine blade.

[0013] The utility model provides a kind of device for processing steam turbine moving blade and engraving machine, the device can accurately position and clamp workpiece, effectively avoid the problems such as tool vibration, displacement or deformation during workpiece processing;At the same time, the device also needs to cooperate with the engraving machine to realize high-precision and high-efficiency processing, which not only improves the processing precision and efficiency, but also reduces the processing cost.

[0014] As a preferred technical solution, it comprises a double-headed screw rod, which is arranged between the cushion blocks, one end of the double-headed screw rod is inserted into the bottom plate and connected with the bottom plate, the other end of the double-headed screw rod passes through the pressing hole of the pressing plate and is connected with a nut, and the nut, the pressing hole of the pressing plate and the double-headed screw rod cooperate with each other to realize the pressing of the end surface of the steam turbine blade by the pressing plate.

[0015] As a preferred technical solution, one end of the pin rod abuts against the side surface of the steam turbine blade and positions the side surface of the steam turbine blade, and the other end of the pin rod is inserted into the bottom plate and connected therewith.

[0016] As a preferred technical solution, every two corresponding cushion blocks support one steam turbine blade.

[0017] As a preferred technical solution, the shape of the positioning block is "L" type.

[0018] The utility model also provides an engraving machine, which comprises the device for processing steam turbine moving blade and a numerical control engraving machine workbench as claimed in any one of the above embodiments, and the device for processing steam turbine moving blade is arranged on and connected with the numerical control engraving machine workbench.

[0019] As a preferred technical solution, the following processing steps are included:

[0020] Use a probe to measure the blank blade to obtain measured data.

[0021] According to the data stored in the fine carving machine, the deviation between the first surface to be machined of the blank blade and the theoretical value is determined; according to the measured data, the workpiece coordinate calibration of the installed tooling on the fine carving machine is adjusted and determined;

[0022] According to the preset machining program in the fine carving machine, the blade root arc tooth of the steam turbine blade is machined by using the super-high-speed small-amount milling method.

[0023] As a preferred technical solution, the following steps are further included:

[0024] The measured value of the first surface to be machined is used as a reference to measure and set the tolerance range of the remaining surfaces to be machined;

[0025] If the measured value exceeds the preset tolerance range, feedback is provided, and on-site fine-tuning is allowed according to the measured data, including adjusting the workpiece coordinate calibration of the installed tooling on the fine carving machine, and then continuing the milling process.

[0026] As a preferred technical solution, the probe measurement step includes measuring the blank blade at multiple preset positions to obtain comprehensive measured data.

[0027] As a preferred technical solution, the machining parameters of the super-high-speed small-amount milling method include:

[0028] The "super-high-speed" refers to the rotation speed of the milling cutter being between 20,000 rpm and 40,000 rpm;

[0029] The "small amount" refers to the thickness of material removed by the milling cutter each time being less than 0.1mm;

[0030] The milling cutter feed speed is controlled between 0.01mm and 0.1mm per revolution, and the milling cutter cutting depth is controlled between 0.2mm and 0.5mm.

[0031] The device for machining steam turbine moving blades and the fine carving machine provided by the utility model have the following advantages

[0032] Advantages:

[0033] 1) The device for machining steam turbine moving blades and the fine carving machine provided by the utility model can accurately position and clamp the workpiece, effectively avoiding problems such as tool shaking, displacement or deformation during workpiece machining; at the same time, the device also needs to be able to cooperate with the fine carving machine to realize high-precision and high-efficiency machining, not only improving machining precision and efficiency, but also reducing machining cost;

[0034] 2) The utility model provides a kind of device and engraving machine of processing steam turbine moving blade, the both sides of bottom plate are connected with multiple positioning blocks, these positioning blocks are correspondingly arranged, for accommodating and positioning the outside of steam turbine blade;With the accurate cooperation of positioning block, it can ensure that blade blank has correct position and posture in processing process;

[0035] Multiple pin rods are connected on the bottom plate, and the pin rods are used to position the side surface of the steam turbine blade;The pin rod is matched with the positioning hole or positioning surface on the blade, which further limits the degree of freedom of the blade, improves the positioning accuracy and stability.

[0036] Multiple pads are connected on the bottom plate, and the pads are used to support the steam turbine blade;The design of the pad can ensure that the blade is uniformly and stably supported during processing, avoiding deformation or displacement caused by insufficient support;

[0037] The pressing plate is arranged above the steam turbine blade, for pressing the end surface of the steam turbine blade;The pressing plate fixes the blade on the bottom plate by appropriate clamping force, ensuring the stability and reliability of the blade during processing;At the same time, the design of the pressing plate can also prevent the blade from vibrating or displacing during processing due to uneven stress.

[0038] Through accurate positioning and clamping, the blade can maintain a stable state during processing, reducing the phenomenon of shaking the knife due to vibration;The joint action of the pad and the pressing plate ensures that the blade will not displace or deform during processing due to uneven stress or insufficient support, reducing the vibration marks and defects on the surface of the blade after processing.

[0039] The design precision of the device matches the engraving machine, and the processing precision can still reach 0.02mm (the error is within 20 microns, and the precision can be even higher), which can ensure that the high precision requirement is met during processing on the engraving machine;Through accurate positioning and clamping, the adjustment and correction time during processing is reduced, and the processing efficiency is improved;As the processing precision and efficiency are improved, the scrap rate and processing time are reduced, thereby reducing the processing cost.

[0040] 3) The utility model provides a kind of device and engraving machine of processing steam turbine moving blade, can effectively lock the axial position, longitudinal position of workpiece, position accurate, can simultaneously clamp two workpieces, save clamping time, improve production efficiency, make workpiece clamping convenient, method simple, use very convenient, greatly shorten the clamping time of workpiece, improve processing efficiency.Conventional processing method needs to use profile milling cutter to realize, present and use engraving machine to realize through the utility model, reduce production cost, guarantee surface roughness, processing precision. BRIEF DESCRIPTION OF DRAWINGS

[0041] Figure 1The utility model provides a kind of structure schematic diagram of device for processing steam turbine moving blade provided by the utility model;

[0042] Figure 2 The utility model provides a kind of structure schematic diagram of bottom plate in device for processing steam turbine moving blade provided by the utility model;

[0043] Figure 3 The utility model provides a kind of structure schematic diagram of cushion block in device for processing steam turbine moving blade provided by the utility model;

[0044] Figure 4 The utility model provides a kind of structure schematic diagram of positioning block in device for processing steam turbine moving blade provided by the utility model;

[0045] Figure 5 The utility model provides a kind of structure schematic diagram of pressing plate in device for processing steam turbine moving blade provided by the utility model;

[0046] Figure 6 The utility model provides a kind of structure schematic diagram of steam turbine blade only after processing blade root arc tooth;

[0047] Figure 7 The utility model provides steam turbine blade finished product schematic diagram after fine carving machine processing;

[0048] Among them, 1-bottom plate;2-pin;3-cushion block;4-pressing plate;41-pressing hole;5-positioning block;6-double head screw;7-nut;8-steam turbine blade. DETAILED DESCRIPTION

[0049] The preferred embodiment of the utility model is described in detail below in conjunction with the drawings.

[0050] As Figures 1-5 The utility model provides a kind of device for processing steam turbine moving blade, comprising:

[0051] Bottom plate 1, the two side surfaces of the bottom plate 1 are connected with multiple positioning blocks 5, and the positioning block 5 arranged correspondingly is used to accommodate and position the outer side surface of steam turbine blade 8 blank;

[0052] Multiple cushion blocks 3 are connected on the bottom plate 1, and the cushion block 3 is used to support steam turbine blade 8;

[0053] Multiple pin rods 2 are connected on the bottom plate 1, and the pin rod 2 is used to position the side surface of steam turbine blade 8;

[0054] Pressing plate 4, the pressing plate 4 is arranged above steam turbine blade 8, and the pressing plate 4 is used to press the end surface of steam turbine blade 8.

[0055] The utility model provides a kind of device and engraving machine of processing steam turbine moving blade, the device can accurately position and clamping workpiece, effectively avoid the problem such as tool shock, displacement or deformation during workpiece processing;Meanwhile, the device also needs to be able to cooperate with engraving machine, realize high-precision, high-efficiency processing, not only improve processing precision and efficiency, more reduce processing cost.

[0056] Preferably, as Figure 1 As shown, including;Double-end screw 6 is arranged between the cushion block 3, one end of the double-end screw 6 is inserted into the bottom plate 1 and is connected with the bottom plate 1, the other end of the double-end screw 6 passes through the compression hole 41 of pressing plate and is connected with nut 7, the nut 7, the compression hole 41 of pressing plate and the double-end screw 6 three mutually cooperate to realize the end face of steam turbine blade 8 by pressing plate 4;

[0057] The setting of double-end screw 6 makes pressing plate 4 can be stably pressed on the end face of steam turbine blade 8, since one end of double-end screw 6 is connected with bottom plate 1, and the other end passes through the compression hole 41 of pressing plate and is connected with nut 7, this structure ensures that the position of steam turbine blade 8 will not be offset or deformed due to the pressure of pressing plate when pressing steam turbine blade 8, so that the position accuracy of workpiece in the processing process is effectively guaranteed;

[0058] Through the cooperation of double-end screw 6, nut 7 and the compression hole 41 of pressing plate, steam turbine blade 8 can be firmly fixed on the device, this fixing mode not only improves the stability of processing, but also avoids the processing error caused by workpiece loosening or displacement during processing, at the same time, stable processing environment also helps to prolong the service life of engraving machine and improve the reliability of equipment;

[0059] The shape of the compression hole 41 is preferably "U" type.

[0060] The design of double-end screw 6 and nut 7 makes the compression and loosening operation of pressing plate 4 simple and fast. Compared with the traditional clamping mode, this structure does not need complex clamping mechanism or additional clamping tool, only needs to rotate nut 7 to realize the compression and loosening of pressing plate 4, which not only simplifies the operation process, but also improves the processing efficiency;

[0061] During processing, steam turbine blade 8 needs to bear the cutting force and other external forces from engraving machine. Through the compression effect of double-end screw 6 and pressing plate 4, the rigidity of steam turbine blade 8 can be enhanced, so that it can better resist the action of external force, thereby avoiding deformation or damage during processing.

[0062] Preferably, as Figure 1As shown, one end of the pin 2 abuts against the side of the turbine blade 8 and positions the side of the turbine blade 8, while the other end of the pin 2 is inserted into and connected to the base plate 1.

[0063] One end of the pin 2 is designed with an outer wall, which closely abuts against the side of the turbine blade 8, thereby achieving precise positioning of the side of the turbine blade 8. This positioning method ensures the positional accuracy of the turbine blade 8 during the processing and avoids processing errors caused by positional deviation.

[0064] The other end of the pin 2 is inserted into the base plate 1 and firmly connected to it, thus forming a stable support structure to fix the turbine blade 8 on the device. This fixing method not only enhances the stability of the turbine blade 8 during the processing, but also prevents the turbine blade 8 from being displaced or deformed under the action of cutting force or other external forces.

[0065] The precise positioning and fixing function of pin 2 can greatly improve the processing accuracy and efficiency. On the one hand, the precise positioning ensures the position accuracy of the turbine blade 8 during the processing, thus ensuring that the processed turbine blade 8 meets the design requirements. On the other hand, the stable fixing structure reduces vibration and deformation during the processing, improving processing efficiency and product quality.

[0066] The design of pin 2 also simplifies the operation process. Since pin 2 can directly position and fix the turbine blade 8, no additional clamping mechanism or tool is required. This not only reduces the difficulty of operation, but also improves the processing efficiency.

[0067] Preferably, such as Figure 1 As shown, every two corresponding pads 3 support one of the turbine blades 8;

[0068] The two corresponding pads 3 can ensure that the turbine blades 8 are supported by a uniform force in the horizontal direction. This uniform support helps to prevent the turbine blades 8 from deforming due to uneven force during processing, thus ensuring the integrity and processing accuracy of the turbine blades 8.

[0069] With the support of the pad block 3, the turbine blade 8 gains additional stability during the machining process; this stability is crucial for resisting the vibration and impact forces generated during the cutting process, helping to ensure the smooth progress of the machining process, while reducing defects in the turbine blade 8 caused by vibration.

[0070] The spacer block 3 also serves to protect the turbine blades 8 and the processing equipment. During processing, the spacer block 3 can absorb some of the cutting force and vibration, thereby reducing wear and damage to the blades and processing equipment. This helps to extend the service life of the blades and processing equipment and reduce maintenance costs.

[0071] Preferably, as shown in Figure 1 and Figure 4 The positioning block 5 is in the shape of an "L" letter; due to its unique shape design, the "L" letter-shaped positioning block 5 can quickly and accurately position the workpiece at a predetermined position, which helps to reduce positioning time and improve processing efficiency; using the "L" letter-shaped positioning block 5 can simplify the operation process and reduce the operation difficulty, which makes the operator more easily complete the positioning and clamping work of the workpiece, thereby improving the overall processing efficiency.

[0072] In another aspect, the utility model provides a kind of precision carving machine, comprising: the device of processing steam turbine moving blade and numerical control precision carving machine workstation as any one described above, the device of processing steam turbine moving blade is set on the numerical control precision carving machine workstation and is connected with the numerical control precision carving machine workstation;

[0073] The precision carving machine provided by the utility model integrates the device for processing steam turbine moving blade and the precision carving machine workstation, realizes high-precision processing, improves processing efficiency, reduces processing cost, and enhances the flexibility of processing.

[0074] Preferably, the following processing steps are included:

[0075] The probe is used to measure the blank blade to obtain measured data;

[0076] According to the machining data stored in the precision carving machine, the deviation between the first machining surface of the blank blade and the theoretical value is determined; according to the measured data, the workpiece coordinate calibration of the tooling already installed on the precision carving machine is adjusted and determined;

[0077] According to the preset machining program in the precision carving machine, the blade root arc tooth of the steam turbine blade is machined using the precision carving machine in a super-high-speed small-amount milling manner;

[0078] The present application uses a probe to measure the blank blade to obtain measured data, and the purpose of this step is to obtain the actual size and shape data of the blank blade. Through the accurate measurement of the probe, the initial state of the blade can be understood, including the size, shape and possible deviation of each part. These data provide an important reference for subsequent processing.

[0079] According to the data stored in the precision carving machine, the deviation between the first surface to be machined of the blank blade and the theoretical value is determined; according to the measured data, the workpiece coordinate calibration of the installed tooling on the precision carving machine is adjusted and determined, by comparing the data stored in the precision carving machine and the measured data measured by the probe, the deviation between the first surface to be machined of the blank blade and the theoretical value can be determined, this step helps to understand the state of the blade before machining and the adjustment amount required; according to the measured data, the workpiece coordinate calibration of the installed tooling on the precision carving machine is adjusted, this step ensures the position accuracy of the blade during machining, so that the subsequent machining can be carried out according to the predetermined path and parameters;

[0080] According to the preset machining program in the precision carving machine, the super high speed small allowance milling method is adopted, the precision carving machine is used to machine the blade root arc tooth of the steam turbine blade, the precision carving machine adopts advanced numerical control system and servo drive technology, which can realize high precision machining, through the preset machining program, the precision carving machine can accurately mill the blade according to the predetermined path and parameters, to ensure that the machined blade root arc tooth meets the design requirements; the super high speed small allowance milling method can greatly improve the machining efficiency, the super high speed milling can reduce the cutting force and cutting heat, reduce the tool wear and workpiece deformation, so as to improve the machining quality and efficiency, at the same time, the small allowance machining can reduce the machining time and material waste, further reduce the cost;

[0081] The machining precision and stability of the precision carving machine ensure that the machined blade root arc tooth has high precision and high surface quality, which helps to improve the working efficiency and performance of the steam turbine and prolong its service life;

[0082] The precision carving machine has powerful programming and simulation function, which can quickly generate and optimize the machining program according to different blade shapes and machining requirements, so that the precision carving machine can flexibly cope with various machining requirements, and improve the flexibility and adaptability of machining.

[0083] Preferably, the following steps are further included:

[0084] The measured value of the first surface to be machined is used as a reference to measure and set the tolerance range of the remaining surfaces to be machined;

[0085] If the measured value exceeds the preset tolerance range, feedback is provided and on-site fine tuning is allowed according to the measured data, including adjusting the workpiece coordinate calibration of the installed tooling on the precision carving machine, and then continuing the milling machining;

[0086] In the machining process of the steam turbine blade, the measured value of the first surface to be machined is used as a reference to measure and set the tolerance range of the remaining surfaces to be machined, and feedback is provided when the measured value exceeds the preset tolerance range and on-site fine tuning is allowed, which plays a crucial role in this series of steps.

[0087] Specifically, the role of these steps can be summarized as follows:

[0088] Using the measured value of the first surface to be processed as a reference can ensure that the subsequent processing surfaces have an accurate reference standard; this helps to reduce error accumulation during processing and improve overall processing accuracy.

[0089] Setting the tolerance range of the remaining surfaces to be processed according to the measured value of the reference surface can ensure that each processing surface meets the design requirements, and the setting of the tolerance range helps to control the variation during processing and improve the stability and consistency of processing quality.

[0090] When the measured value exceeds the preset tolerance range, the system can provide timely feedback, which helps to discover problems in the processing process in a timely manner; the feedback mechanism can prompt the operator to take prompt measures for adjustment, avoiding the problem from being magnified, thereby improving processing efficiency; allowing on-site fine-tuning based on measured data, including adjusting the workpiece coordinate calibration of the installed tooling on the engraving machine, can ensure the flexibility and adaptability of the processing process; on-site fine-tuning can quickly respond to changes in the processing process, reducing downtime and resource waste, and further improving processing efficiency.

[0091] Through strict tolerance control and on-site fine-tuning, rework and scrap caused by processing errors can be reduced, which helps to reduce production costs and improve overall economic efficiency; accurate processing and tolerance control can optimize material utilization and reduce material waste, which helps to reduce raw material costs and improve the economic efficiency of the processing process.

[0092] Collecting and analyzing measured data during processing helps to discover potential problems and improvement points in the processing process, which provides data support for continuous improvement and innovation;

[0093] According to the measured data and feedback results, the processing technology can be optimized and upgraded, which helps to improve processing quality, efficiency and cost-effectiveness.

[0094] In summary, using the measured value of the first surface to be processed as a reference to measure and set the tolerance range of the remaining surfaces to be processed, and providing feedback when the measured value exceeds the preset tolerance range and allowing on-site fine-tuning, this series of steps plays a crucial role in the processing of turbine blades. These steps not only ensure processing accuracy and quality control, but also improve the flexibility and efficiency of the processing process, reduce production costs and scrap rates, and promote continuous improvement and innovation.

[0095] Preferably, the probe measurement step includes measuring the blank blade at multiple preset positions to obtain comprehensive measured data;

[0096] Through comprehensive measurement, errors of the blade before machining can be found and corrected in time, which helps to reduce error accumulation in the machining process and improve overall machining precision; the probe measurement step comprises measuring the blank blade at multiple preset positions to obtain comprehensive measured data.

[0097] Preferably, the machining parameters of the super-high-speed small-amount milling mode comprise:

[0098] The "super-high-speed" refers to a rotation speed of the milling cutter between 20000 rpm and 40000 rpm;

[0099] The "small amount" refers to a material thickness removed by the milling cutter in each cutting less than 0.1mm;

[0100] The milling cutter feed speed is controlled between 0.01mm and 0.1mm per revolution, and the milling cutter cutting depth is controlled between 0.2mm and 0.5mm.

[0101] The rotation speed of the milling cutter is between 20000 rpm and 40000 rpm, which is much higher than the conventional milling speed; this makes the contact times between the cutter and the workpiece per unit time increase, and the cutting efficiency is significantly improved;

[0102] Small-amount cutting, the material thickness removed by the milling cutter in each cutting is less than 0.1mm, which means that the burden of each cutting is smaller; this helps to reduce energy consumption and cutting force in the cutting process, so that the cutting process is more relaxed and efficient;

[0103] Reasonable feed speed and cutting depth, the feed speed is controlled between 0.01mm and 0.1mm per revolution, and the cutting depth is controlled between 0.2mm and 0.5mm; such parameter setting can ensure the machining quality while realizing faster cutting speed, thereby improving the machining efficiency.

[0104] It can be understood that the utility model is described through some embodiments, and those skilled in the art know that various changes or equivalent replacements can be made to these features and embodiments without departing from the spirit and scope of the utility model. In addition, under the guidance of the utility model, these features and embodiments can be modified to adapt to specific conditions and materials without departing from the spirit and scope of the utility model. Therefore, the utility model is not limited by the specific embodiments disclosed herein, and all the embodiments falling within the scope of the claims of the present application are within the scope of the utility model. In addition, under the guidance of the utility model, these features and embodiments can be modified to adapt to specific conditions and materials without departing from the spirit and scope of the utility model. Therefore, the utility model is not limited by the specific embodiments disclosed herein, and all the embodiments falling within the scope of the claims of the present application are within the scope of the utility model.

Claims

1. An apparatus for machining a rotor blade of a steam turbine, characterized in that The device comprises: a bottom plate, two sides of which are connected with a plurality of positioning blocks, and the positioning blocks arranged correspondingly are used for accommodating and positioning the outer side of the turbine blade; a plurality of cushion blocks connected to the bottom plate, and the cushion blocks are used for supporting the turbine blade; a plurality of pin rods connected to the bottom plate, and the pin rods are used for positioning the side of the turbine blade; a pressing plate arranged above the turbine blade, and the pressing plate is used for pressing the end face of the turbine blade.

2. An apparatus for machining a moving blade of a steam turbine according to claim 1, characterized in that The device comprises: a double-end screw rod arranged between the cushion blocks, one end of the double-end screw rod is inserted into the bottom plate and connected with the bottom plate, the other end of the double-end screw rod passes through the pressing hole of the pressing plate and is connected with a nut, and the nut, the pressing hole of the pressing plate and the double-end screw rod are matched with each other to realize that the pressing plate presses the end face of the turbine blade.

3. An apparatus for machining a moving blade of a steam turbine as defined in claim 1, characterized by One end of the pin rod abuts against and positions the side of the turbine blade, and the other end of the pin rod is inserted into the bottom plate and connected with the bottom plate.

4. An apparatus for machining a moving blade of a steam turbine as defined in claim 1, characterized by Each two cushion blocks arranged correspondingly support one turbine blade.

5. An apparatus for machining a moving blade of a steam turbine as defined in claim 1, wherein The shape of the positioning block is "L" type.

6. An apparatus for machining a moving blade of a steam turbine as defined in claim 2, characterized in that The shape of the pressing hole of the pressing plate is "U" type.

7. A fine carving machine characterized by, The device for machining turbine moving blade and the numerical control engraving and milling machine workbench as claimed in any one of claims 1-6 are comprised. The device for machining turbine moving blade is arranged on and connected with the numerical control engraving and milling machine workbench.

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