Flexible online machining method and system for large-diameter-thickness-ratio thin-wall disc part

Abstract

The invention provides a flexible online machining method and system for a large-diameter-thickness-ratio thin-wall disc part. The flexible online machining method comprises the steps that firstly, an adaptive adsorption face forming die is manufactured according to the size characteristics of a product; secondly, an inner concave face datum is machined at the product blank; thirdly, a small vacuum pump with a lithium battery and a pressure alarm function and an integral supporting assembly are installed on the machine tool table top; fourthly, the adsorption surface forming die is installed at the upper end of the integral supporting assembly, and a vacuum pump and the adsorption surface forming die are in gas circuit connection through a pipeline; fifthly, the adsorption face is machined to the theoretical size on line according to the size of the part; sixthly, a sealing gasket is used for setting a sealing area, the part is placed on the adsorption face forming die, and a vacuum pump is started to fix the part; and seventhly, an auxiliary pressing plate is installed on the outer side of the part for finish machining, and all machining is completed. According to the invention, adaptive adsorption surface moulding bed clamps can be manufactured according to products with different sizes for combined use, and the application range and the strain capacity of the mould clamp become higher.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical processing, and in particular to a flexible online processing method and system for thin-walled disk parts with a large diameter-to-thickness ratio. Background Art

[0002] Thin-walled disc parts with large diameter-to-thickness ratio are an important component in the carrier fuel storage system. Their main function is to store and supply fuel for the power system during rocket launch. The design requirements of the parts need to have sufficient strength while taking into account the characteristics of being as lightweight as possible. During the design process, a large diameter-to-thickness ratio will be formed, and the diameter-to-thickness ratio can reach more than 500:1. In order to ensure the reliability and safety of the parts, higher precision dimensional control requirements will be put forward for their thickness dimensions in the design requirements, for example: How to effectively control the thickness processing accuracy will directly affect the performance indicators of the parts, so the processing quality requirements of the precision dimensions of such parts are crucial.

[0003] Thin-walled disc parts with large diameter-to-thickness ratio are common parts in various types of launch vehicle products. This type of parts is used in many components, and is subject to different functions and technical indicators, and is combined with different features. At present, various similar parts have the characteristics of typicality and differentiation. For this type of product, its thickness size is the processing difficulty of the parts, and in order to improve the processing flexibility and convenience between different parts, there is a lack of a convenient and high-precision control method in the processing process.

[0004] There are currently two ways to improve this problem: (1) change the machining method to die casting for production; (2) use filler materials for auxiliary support to enhance the rigidity of the part itself for production.

[0005] Problems with die-casting production: (1) Depending on the size of the parts, the corresponding stamping molds need to be customized. The processing cost of single-piece and small-batch processing will increase dramatically, and the production method has low universality. (2) The processing method has low control over precision and it is difficult to meet the thickness size control requirements.

[0006] The problems of using fillers for auxiliary support to enhance the rigidity of parts are as follows: (1) This method has low control over machining accuracy and is cumbersome and inefficient to operate; (2) During machining, fillers are susceptible to thermal deformation due to cutting, resulting in separation from parts, and the machining method has low reliability.

[0007] Therefore, a new processing method is urgently needed to solve the manufacturing difficulties of thin-walled disk-like parts with large diameter-to-thickness ratio. Summary of the invention

[0008] In view of the defects in the prior art, the object of the present invention is to provide a flexible online processing method and system for thin-walled disk parts with a large diameter-to-thickness ratio.

[0009] The flexible online processing method for thin-walled disk parts with large diameter-to-thickness ratio provided by the present invention comprises:

[0010] Step 1: Make a suitable adsorption surface mold according to the product size characteristics;

[0011] Step 2: Process the inner concave surface reference on the product blank;

[0012] Step 3: Install the vacuum pump with a small lithium battery and pressure alarm function and the integral support assembly to the center of the vertical lathe table, and align and fix them with the positioning keys, positioning pins, pressure plates and bolts;

[0013] Step 4: Install the adsorption surface tire mold to the upper end of the integral support assembly, correct the position through the positioning pin, fix it with the countersunk bolts and washers, and use the air pipe to connect the vacuum pump and the adsorption surface tire mold;

[0014] Step 5: Process the adsorption surface online to the theoretical size according to the part size;

[0015] Step 6: Use the sealing gasket to set the sealing area, place the part on the adsorption surface mold, and turn on the vacuum pump to fix the part;

[0016] Step 7: Install the auxiliary pressure plate at the process foot on the outside of the part to complete all processing.

[0017] Preferably, the step 1 comprises:

[0018] The arc radius of the adsorption surface mold is R1755mm, the thickness is 2mm-4mm, the envelope diameter is Φ1420mm, and the ratio of thickness to envelope diameter is: 0.0014-0.0028;

[0019] Use CNC gantry to process the adsorption surface mold, ensuring that the size of the adsorption surface exceeds the part size by 105-108%, and its sealing area is 10mm-12mm smaller than the part envelope diameter;

[0020] The sealing grooves are distributed in a structure of alternating cross-shaped and circular rings. There is a threaded connection hole near the middle, and a margin of 0.1mm-0.15mm is reserved before finishing by turning.

[0021] Preferably, step 2 includes: fixing the blank with process feet, performing multiple layered processing by a vertical lathe until the inner concave surface is completely polished, and processing the inner surface to a preset size for use as a subsequent processing reference. The processing parameters used are a lathe table speed of 10r / min-15r / min, a cutting depth of 0.2mm-1mm, a processing rate of 2mm / min-5mm / min, and air cooling for processing cooling.

[0022] Preferably, step 5 includes: processing the adsorption surface online to the theoretical size of R1755mm according to the size of the part, ensuring that the size of the adsorption surface is consistent with the dynamic motion size of the machine tool, and improving the processing accuracy of the machine tool and the adsorption surface mold to the theoretical state. The processing parameters adopted are a lathe table speed of 10r / min-15r / min, a cutting depth of 0.2mm-1mm, a processing rate of 2mm / min-5mm / min, and a low-pressure air blow pipe is used to align the tool cutting processing position for air blowing cooling.

[0023] Preferably, step 6 comprises:

[0024] Use a sealing strip, place it in the outermost sealing groove to set the sealing area, and place the parts on the adsorption surface tire mold;

[0025] The negative pressure value of the vacuum pump is set to: -60KPA ~ 80KPA, and set to a reminder state when the pressure and power are less than 20%;

[0026] Install the part on the surface of the adsorption surface mold, use the magnetic stand to fix the dial indicator on the machine tool spindle, and use the machine tool control handwheel to move it to the end face of the part after the inner concave surface is processed. After the needle contacts the end face, the pointer position jump range is controlled within 0-1mm. Adjust the part lower end face reference, find the part position, and turn on the vacuum pump to fix it.

[0027] The flexible online processing system for thin-walled disk parts with large diameter-to-thickness ratio provided by the present invention comprises:

[0028] Module M1: Make a suitable adsorption surface mold according to the product size characteristics;

[0029] Module M2: Processing the inner concave surface reference in the product blank;

[0030] Module M3: Install the vacuum pump with a small lithium battery and pressure alarm function and the integral support assembly to the center of the vertical lathe table, and align and fix them with the positioning keys, positioning pins, pressure plates and bolts;

[0031] Module M4: Install the adsorption surface tire mold to the upper end of the integral support assembly, correct the position through the positioning pin, fix it with the countersunk bolts and washers, and use the air pipe to connect the vacuum pump and the adsorption surface tire mold;

[0032] Module M5: Online processing of the adsorption surface to the theoretical size according to the part size;

[0033] Module M6: Use a sealing gasket to set the sealing area, place the part on the adsorption surface mold, and turn on the vacuum pump to fix the part;

[0034] Module M7: At the process foot on the outside of the part, the auxiliary pressure plate is installed to complete the entire processing.

[0035] Preferably, the module M1 comprises:

[0036] The arc radius of the adsorption surface mold is R1755mm, the thickness is 2mm-4mm, the envelope diameter is Φ1420mm, and the ratio of thickness to envelope diameter is: 0.0014-0.0028;

[0037] Use CNC gantry to process the adsorption surface mold, ensuring that the size of the adsorption surface exceeds the part size by 105-108%, and its sealing area is 10mm-12mm smaller than the part envelope diameter;

[0038] The sealing grooves are distributed in a structure of alternating cross-shaped and circular rings. There is a threaded connection hole near the middle, and a margin of 0.1mm-0.15mm is reserved before finishing by turning.

[0039] Preferably, the module M2 includes: using process feet to fix the blank, performing multiple layered processing through a vertical lathe until the inner concave surface is completely polished, and then processing the inner surface to a preset size for use as a subsequent processing reference. The processing parameters used are a lathe table speed of 10r / min-15r / min, a cutting depth of 0.2mm-1mm, a processing rate of 2mm / min-5mm / min, and air cooling for processing cooling.

[0040] Preferably, the module M5 includes: online processing of the adsorption surface to the theoretical size of R1755mm according to the part size, ensuring that the size of the adsorption surface is consistent with the dynamic motion size of the machine tool, and improving the processing accuracy of the machine tool and the adsorption surface mold to a theoretical state. The processing parameters adopted are a lathe table speed of 10r / min-15r / min, a cutting depth of 0.2mm-1mm, a processing rate of 2mm / min-5mm / min, and a low-pressure air blow pipe is used to align the tool cutting processing position for air blowing cooling.

[0041] Preferably, the module M6 comprises:

[0042] Use a sealing strip, place it in the outermost sealing groove to set the sealing area, and place the parts on the adsorption surface tire mold;

[0043] The negative pressure value of the vacuum pump is set to: -60KPA ~ 80KPA, and set to a reminder state when the pressure and power are less than 20%;

[0044] Install the part on the surface of the adsorption surface mold, use the magnetic stand to fix the dial indicator on the machine tool spindle, and use the machine tool control handwheel to move it to the end face of the part after the inner concave surface is processed. After the needle contacts the end face, the pointer position jump range is controlled within 0-1mm. Adjust the part lower end face reference, find the part position, and turn on the vacuum pump to fix it.

[0045] Compared with the prior art, the present invention has the following beneficial effects:

[0046] The solution provided by the present invention can be used to produce suitable adsorption surface tire mold clamps according to products of different sizes for combined use, and its scope of use and adaptability become higher; through online fine processing of the adsorption surface, the dynamic processing accuracy capability of the machine tool and the precision size of the adsorption surface can be improved to a near-theoretical state, and combined with vacuum adsorption technology, better processing accuracy and surface roughness quality can be obtained after processing. By using this invention, a flexible and high-precision mechanical processing method can be realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0048] Figure 1 It is a schematic diagram of the structure of the fixture for the adsorption surface;

[0049] Figure 2 It is a schematic diagram of the features and dimensions of the parts;

[0050] Figure 3 It is a schematic diagram of the adsorption surface tire mold;

[0051] Figure 4 This is a schematic diagram of the base processing of the inner concave surface of the product blank;

[0052] Figure 5 This is a schematic diagram of the vacuum pump installation;

[0053] Figure 6 It is a schematic diagram of the structure of the integral support assembly;

[0054] Figure 7 This is a schematic diagram of the installation of the integral support assembly;

[0055] Figure 8 This is a schematic diagram of the installation of the adsorption surface tire mold;

[0056] Fig. 9 This is a schematic diagram of pipeline connection;

[0057] Fig.10 This is a schematic diagram of the installation of the finishing adsorption tooling;

[0058] Fig.11 Provide installation diagram for product calibration;

[0059] Fig.12 Schematic diagram for installing the auxiliary pressure plate.

[0060] In the figure, 1-machine table, 2-integral support assembly, 3-adsorption surface mold, 4-parts product, 5-vacuum pump, 6-fastening components, 7-locating pin, 8-countersunk screw and washer, 9-rubber sealing ring, 10-pipe joint, 11-trachea;

[0061] 20-auxiliary pressure plate assembly, 21-support base plate, 22-support column, 23-positioning key, 24-bolt, 25-first nut, 26-first washer, 27-step positioning key;

[0062] 31-adsorption surface, 32-pipe thread connection hole, 33-sealing groove, 34-step hole;

[0063] 51-pressure gauge, 52-electricity indicator;

[0064] 61-second nut, 62-screw, 63-washer, 64-T-block. DETAILED DESCRIPTION

[0065] The present invention is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those of ordinary skill in the art, several changes and improvements can also be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0066] Example

[0067] The embodiment of the present invention provides a flexible online processing method for thin-walled disk parts with a large diameter-to-thickness ratio, comprising the following steps:

[0068] Step 1: Make a suitable adsorption surface mold according to the product size characteristics.

[0069] refer to Figure 1 , Figure 2 and Figure 3 , design and process the adsorption surface tire mold, the adsorption surface 31 is made into an arc transition with R20; a pipe thread connection hole 32, a sealing groove 33, an outer fixed step hole 34 are processed in the middle, the diameter of the two positioning pin holes in the middle is: Φ12±0.01, the distribution circle diameter is Φ800±0.01, and the depth is 20mm.

[0070] The size of the adsorption surface 31 is R1755mm with an envelope diameter of Φ1500mm;

[0071] The size of the pipe thread connection hole 32 is Φ10 to 3 / 8”, and the effective length of the thread is 50mm;

[0072] The dimensions of the sealing groove 33 are as follows: the maximum outer ring dimension is Φ1400mm, the width is 6mm, and the depth is 5mm;

[0073] The size of the step hole 34 is Φ17 through hole matched with Φ35, and the minimum depth of the step hole is greater than 32mm.

[0074] Use CNC gantry to process the adsorption surface tire mold, and process the R1755 size in the adsorption surface 31 to: R1755.15, and the sealing groove depth is processed to 5.15mm, leaving a 0.15mm margin.

[0075] Step 2: Processing the inner concave surface reference on the product blank;

[0076] refer to Figure 4 , use the process feet at the blank to fix it, and process the inner concave surface R1755mm in place. The processing parameters used are lathe table speed 12r / min, cutting depth 0.5mm, processing rate 3mm / min, and air cooling for processing cooling, which is used as the subsequent processing benchmark.

[0077] Step 3: Install a small vacuum pump with lithium battery and pressure alarm function and an integral support assembly on the machine table 1;

[0078] refer to Figure 5 , install a small vacuum pump 5 with a lithium battery and a pressure alarm function to the center of the vertical lathe table 1, and use fastening components 6 to fix it at the left and right positions. The fastening components 6 include: a second nut 61, a bolt 62, a second washer 63, and a T-block 64.

[0079] refer to Figure 6 and Figure 7 The integral support assembly 2 is composed of a support base plate 21 and a support column 22. It is positioned and installed between the machine tool table 1 through a positioning key 23 and a step positioning key 27, and is fixed with a bolt 24, a first washer 26 and a first nut 25 so that the center of the positioning hole of the integral support assembly 2 is consistent with the rotation center of the processing machine tool table 1.

[0080] The width of the positioning key 23 is 12±0.005;

[0081] The size of the step positioning key 27 is 12±0.005 to 16±0.005.

[0082] Step 4: Install the adsorption surface mold to the upper end of the integral support assembly, and use pipelines to connect the vacuum pump and the adsorption tooling for air circuit connection;

[0083] refer to Figure 8 Use the positioning pin 7 to cooperate with the positioning hole to quickly correct the position of the adsorption surface tire mold 3 so that the center of the adsorption surface tire mold 3 is consistent with the rotation center of the processing machine table 1, and use the countersunk screws and washers 8 to fix the adsorption surface tire mold 3 and the integral support assembly 2.

[0084] The size of the positioning pin 7 is Φ12±0.005.

[0085] refer to Fig. 9 Through the manufactured pipe thread, the pipe joint 10 is installed, and the air pipe 11 is used in conjunction with the vacuum pump 5 with a small lithium battery and a pressure alarm function to be connected to the adsorption surface tire mold 3 through a pipeline.

[0086] Step 5: Process the adsorption surface online to the theoretical size according to the part size;

[0087] refer to Fig.10 , the 0.15mm margin reserved in the CNC gantry processing is fine-machined, and the adsorption surface of the adsorption surface tire mold 3 is processed online to the theoretical R1755 size, so that the processing accuracy of the machine tool and the adsorption surface is improved to the theoretical state. The processing parameters adopted are the lathe table speed of 15r / min, the cutting depth of 0.3mm, the processing rate of 3mm / min, and air cooling is used for processing cooling.

[0088] Step 6. Use a sealing gasket to set the sealing area, place the part on the adsorption surface mold, and turn on the vacuum pump to fix the part.

[0089] Use a Φ6.5 diameter rubber sealing strip to install the outermost sealing ring of the tooling, set the negative pressure value of the vacuum pump to: -60-80KPA, and set it to a reminder state when the pressure and power are less than 20%; and install the product on the adsorption surface tire mold.

[0090] refer to Fig.11 , use a dial indicator to calibrate the part to a position close to the rotary plane of the machine tool, and turn on the vacuum pump to fix the part.

[0091] Step 7. Install the auxiliary pressure plate on the outside of the part and perform turning to complete all processing.

[0092] refer to Fig.12 , at the process foot outside the part, install the auxiliary pressure plate assembly 20. Check the pressure gauge 51 and the power indicator 52 to ensure that they are working properly, and then proceed with the processing. The processing parameters used are the lathe table speed of 12r / min, the cutting depth of 0.5mm, the processing rate of 3mm / min, and air cooling for processing cooling.

[0093] Finally, all processing is completed by cutting the process feet.

[0094] The advantages of the present invention include: providing a flexible and high-precision processing method for processing thin-walled disc parts with large diameter-thickness ratio. The product can be used in combination with an integral support component by making a matching adsorption surface mold, and the method is flexible, convenient and low-cost; in the product size control stage, the adsorption surface surface can be fine-machined online to obtain the ability closest to the theoretical processing accuracy. After combining the application of vacuum adsorption technology, the part precision control ability has been greatly improved. At the same time, the thickness of the part gradually becomes thinner with cutting, and its own strength becomes weaker, so it will fit the adsorption surface better. For thin-walled disc parts with large diameter-thickness ratio, the effect of thickness size control will be better at the completion stage of processing.

[0095] In the description of the present application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0096] Those skilled in the art know that, in addition to implementing the system, device and its various modules provided by the present invention in a purely computer-readable program code, it is entirely possible to implement the same program in the form of logic gates, switches, application-specific integrated circuits, programmable logic controllers and embedded microcontrollers by logically programming the method steps. Therefore, the system, device and its various modules provided by the present invention can be considered as a hardware component, and the modules included therein for implementing various programs can also be considered as structures within the hardware component; the modules for implementing various functions can also be considered as both software programs for implementing the method and structures within the hardware component.

[0097] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the present invention. In the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

Claims

1. A flexible online processing method for thin-walled disk parts with large diameter-to-thickness ratio, characterized in that: include: Step 1: Make a suitable adsorption surface mold according to the product size characteristics; Step 2: Process the inner concave surface reference on the product blank; Step 3: Install the vacuum pump with a small lithium battery and pressure alarm function and the integral support assembly to the center of the vertical lathe table, and align and fix them with the positioning keys, positioning pins, pressure plates and bolts; Step 4: Install the adsorption surface tire mold to the upper end of the integral support assembly, correct the position through the positioning pin, fix it with the countersunk bolts and washers, and use the air pipe to connect the vacuum pump and the adsorption surface tire mold; Step 5: Process the adsorption surface online to the theoretical size according to the part size; Step 6: Use the sealing gasket to set the sealing area, place the part on the adsorption surface mold, and turn on the vacuum pump to fix the part; Step 7: Install the auxiliary pressure plate at the process foot on the outside of the part to complete all processing.

2. The flexible online processing method for thin-walled disk parts with large diameter-to-thickness ratio according to claim 1 is characterized in that: The step 1 comprises: The arc radius of the adsorption surface mold is R1755mm, the thickness is 2mm-4mm, the envelope diameter is Φ1420mm, and the ratio of thickness to envelope diameter is: 0.0014-0.0028; Use CNC gantry to process the adsorption surface mold, ensuring that the size of the adsorption surface exceeds the part size by 105-108%, and its sealing area is 10mm-12mm smaller than the part envelope diameter; The sealing grooves are distributed in a structure of alternating cross-shaped and circular rings. There is a threaded connection hole near the middle, and a margin of 0.1mm-0.15mm is reserved before finishing by turning.

3. The flexible online processing method for thin-walled disk parts with large diameter-to-thickness ratio according to claim 1 is characterized in that: The step 2 includes: fixing the blank with a process foot, performing multiple layered processing by a vertical lathe until the inner concave surface is completely polished, and processing the inner surface to a preset size for use as a subsequent processing reference. The processing parameters used are a lathe table speed of 10r / min-15r / min, a cutting depth of 0.2mm-1mm, a processing rate of 2mm / min-5mm / min, and air cooling for processing cooling.

4. The flexible online processing method for thin-walled disk parts with large diameter-to-thickness ratio according to claim 1 is characterized in that: The step 5 includes: online processing of the adsorption surface to a theoretical size of R1755mm according to the size of the part, ensuring that the size of the adsorption surface is consistent with the dynamic motion size of the machine tool, and improving the processing accuracy of the machine tool and the adsorption surface mold to a theoretical state. The processing parameters used are a lathe table speed of 10r / min-15r / min, a cutting depth of 0.2mm-1mm, a processing rate of 2mm / min-5mm / min, and a low-pressure air blow pipe is used to align the tool cutting processing position for air blowing cooling.

5. The flexible online processing method for thin-walled disk parts with large diameter-to-thickness ratio according to claim 1 is characterized in that: The step 6 comprises: Use a sealing strip, place it in the outermost sealing groove to set the sealing area, and place the parts on the adsorption surface tire mold; The negative pressure value of the vacuum pump is set to: -60KPA ~ 80KPA, and set to a reminder state when the pressure and power are less than 20%; Install the part on the surface of the adsorption surface mold, use the magnetic stand to fix the dial indicator on the machine tool spindle, and use the machine tool control handwheel to move it to the end face of the part after the inner concave surface is processed. After the needle contacts the end face, the pointer position jump range is controlled within 0-1mm. Adjust the part lower end face reference, find the part position, and turn on the vacuum pump to fix it.

6. A flexible online processing system for thin-walled disc parts with large diameter-to-thickness ratio, characterized in that: include: Module M1: Make a suitable adsorption surface mold according to the product size characteristics; Module M2: Processing the inner concave surface reference in the product blank; Module M3: Install the vacuum pump with a small lithium battery and pressure alarm function and the integral support assembly to the center of the vertical lathe table, and align and fix them with the positioning keys, positioning pins, pressure plates and bolts; Module M4: Install the adsorption surface tire mold to the upper end of the integral support assembly, correct the position through the positioning pin, fix it with the countersunk bolts and washers, and use the air pipe to connect the vacuum pump and the adsorption surface tire mold; Module M5: Online processing of the adsorption surface to the theoretical size according to the part size; Module M6: Use a sealing gasket to set the sealing area, place the part on the adsorption surface mold, and turn on the vacuum pump to fix the part; Module M7: At the process foot on the outside of the part, the auxiliary pressure plate is installed to complete the entire processing.

7. The flexible online processing system for thin-walled disk parts with large diameter-to-thickness ratio according to claim 6 is characterized in that: The module M1 comprises: The arc radius of the adsorption surface mold is R1755mm, the thickness is 2mm-4mm, the envelope diameter is Φ1420mm, and the ratio of thickness to envelope diameter is: 0.0014-0.0028; Use CNC gantry to process the adsorption surface mold, ensuring that the size of the adsorption surface exceeds the part size by 105-108%, and its sealing area is 10mm-12mm smaller than the part envelope diameter; The sealing grooves are distributed in a structure of alternating cross-shaped and circular rings. There is a threaded connection hole near the middle, and a margin of 0.1mm-0.15mm is reserved before finishing by turning.

8. The flexible online processing system for thin-walled disk parts with large diameter-to-thickness ratio according to claim 6 is characterized in that: The module M2 includes: using the process feet at the blank to fix it, performing multiple layered processing through a vertical lathe until the inner concave surface is completely polished, and then processing the inner surface to a preset size for use as a subsequent processing reference. The processing parameters used are a lathe table speed of 10r / min-15r / min, a cutting depth of 0.2mm-1mm, a processing rate of 2mm / min-5mm / min, and air cooling for processing cooling.

9. The flexible online processing system for thin-walled disk parts with large diameter-to-thickness ratio according to claim 6 is characterized in that: The module M5 includes: online processing of the adsorption surface to a theoretical size of R1755mm according to the size of the part, ensuring that the size of the adsorption surface is consistent with the dynamic motion size of the machine tool, and improving the processing accuracy of the machine tool and the adsorption surface mold to a theoretical state. The processing parameters adopted are a lathe table speed of 10r / min-15r / min, a cutting depth of 0.2mm-1mm, a processing rate of 2mm / min-5mm / min, and a low-pressure air blow pipe is used to blow air cooling at the tool cutting processing position.

10. The flexible online processing system for thin-walled disk parts with large diameter-to-thickness ratio according to claim 6 is characterized in that: The module M6 comprises: Use a sealing strip, place it in the outermost sealing groove to set the sealing area, and place the parts on the adsorption surface tire mold; The negative pressure value of the vacuum pump is set to: -60KPA ~ 80KPA, and set to a reminder state when the pressure and power are less than 20%; Install the part on the surface of the adsorption surface mold, use the magnetic stand to fix the dial indicator on the machine tool spindle, and use the machine tool control handwheel to move it to the end face of the part after the inner concave surface is processed. After the needle contacts the end face, the pointer position jump range is controlled within 0-1mm. Adjust the part lower end face reference, find the part position, and turn on the vacuum pump to fix it.

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