Special-shaped shaft machining method

Abstract

The invention provides a special-shaped shaft machining method. The special-shaped shaft machining method comprises the steps that a blank body is prefabricated; carrying out rough boring preparation on the blank body, namely supporting the blank body at a supporting position through a supporting tool, boring a first initial mounting end face at one end, far away from the shaft body, of the disc body, boring a second initial mounting end face at one end, far away from the disc body, of the shaft body, mounting a first clamping tool to the first initial mounting end face, and machining a first center hole in the first clamping tool; a second center hole is machined in the second initial installation end face, the axis of the first center hole coincides with the axis of the second center hole, and the blank body is installed to a lathe station through a first clamping tool; rough turning is conducted on the blank body prepared for rough boring so that a special-shaped shaft machining body can be formed; surfacing welding is conducted on the special-shaped shaft machining body; carrying out semi-finish machining on the special-shaped shaft machining body after surfacing; and finish machining is conducted on the special-shaped shaft machining body obtained after semi-finish machining, so that the special-shaped shaft is formed. Therefore, the machining precision is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical processing, and in particular to a method for processing a special-shaped shaft. Background Art

[0002] Wind tunnels are important testing platforms in aerospace, infrastructure, transportation and other fields. They verify the aerodynamic, structural, material and other properties of products by simulating wind that exists or does not exist in reality.

[0003] In wind tunnel tests, axial flow compressor units are usually used as the main compressors of large continuous transonic wind tunnels. Among them, the special-shaped shaft, as an important component of the axial flow compressor rotor, includes a shaft body and a disk body connected to the shaft body. The diameter of the disk body exceeds 2300mm, the diameter of the shaft body is less than 500mm, and the total shaft length of the disk body and the shaft body can reach 2080mm. This is very different from the common compressor stepped shaft. Moreover, under the premise of the large size of the special-shaped shaft itself, the requirements for its design and processing accuracy are also high, which cannot be met by existing processing methods. Summary of the invention

[0004] In order to at least partially solve the problems existing in the prior art, according to one aspect of the present invention, a method for processing a special-shaped shaft is provided. The method for processing a special-shaped shaft comprises:

[0005] A prefabricated blank body, the blank body comprising a shaft body and a disc body welded to one end of the shaft body;

[0006] The blank body is prepared for rough boring, including supporting the blank body at a supporting position by a supporting tool, boring a first preliminary installation end face at an end of the disk body away from the shaft body, boring a second preliminary installation end face at an end of the shaft body away from the disk body, installing a first clamping tool to the first preliminary installation end face, machining a first center hole on the first clamping tool, machining a second center hole on the second preliminary installation end face, the axis of the first center hole coincides with the axis of the second center hole, and mounting the blank body to a lathe station by the first clamping tool;

[0007] Rough turning is performed on the blank body prepared by rough boring to form a special-shaped shaft processing body;

[0008] Perform surfacing welding on the special-shaped shaft processed body after rough turning;

[0009] Perform semi-finishing machining on the special-shaped shaft after surfacing welding;

[0010] The semi-finished special-shaped shaft processing body is finished to form the special-shaped shaft.

[0011] In the special-shaped shaft processing method provided in the present application, the rough boring of the blank body is performed, and the blank body and the special-shaped shaft processing body formed by the blank body processing can be installed and fixed on a lathe or other equipment through the first clamping fixture to perform turning to ensure the processing accuracy. In the step of preparing for rough boring of the blank body, the first clamping fixture is installed, and the blank body is always supported on the supporting fixture, which reduces the movement of the blank body and simplifies the processing process. The supporting fixture can realize the horizontal clamping and fixation of the blank body and the special-shaped shaft processing body formed by the blank body processing, thereby realizing the processing of the first center hole and the second center hole.

[0012] Exemplarily, the step of installing the first clamping tool to the first initial installation end face includes:

[0013] Boring a first installation groove on the first initial installation end surface;

[0014] Install the first clamping tool into the first installation slot.

[0015] Exemplarily, a surfacing area is formed on a side of the shaft body away from the second initial installation end face, and the step of surfacing the special-shaped shaft processing body includes:

[0016] Turning the surfacing area to form a base for surfacing in the surfacing area;

[0017] Perform overlay welding on the overlay area.

[0018] Exemplarily, before the step of semi-finishing the processed special-shaped shaft after surfacing welding, the step includes: relieving stress of the processed special-shaped shaft after surfacing welding.

[0019] Exemplarily, the step of semi-finishing the special-shaped shaft processed body after surfacing welding includes:

[0020] Perform semi-finish boring preparation on the special-shaped shaft after surfacing welding;

[0021] Semi-finish turning is performed on the special-shaped shaft machined body after semi-finish boring.

[0022] Exemplarily, the step of semi-finish boring the special-shaped shaft processed body after surfacing welding includes:

[0023] Support the special-shaped shaft processing body at the supporting position by means of a supporting tool;

[0024] Performing semi-finishing boring on the first preliminary installation end face to form a first fine installation end face, and performing semi-finishing boring on the second preliminary installation end face to form a second fine installation end face;

[0025] Boring a second mounting groove on the first fine mounting end surface;

[0026] Install the second clamping tool to the second installation slot;

[0027] A third center hole is machined on the second fixture, and a fourth center hole is machined on the second precision installation end face. The axes of the third center hole and the fourth center hole coincide with the axes of the special-shaped shaft processing body.

[0028] Exemplarily, the step of performing finish machining on the semi-finished special-shaped shaft processing body comprises: performing finish machining on the semi-finished special-shaped shaft processing body to form the special-shaped shaft.

[0029] Exemplarily, a sandblasting area is formed at the radial outer edge of the disc body, and after the step of finishing the semi-finished turning of the special-shaped shaft processing body to form the special-shaped shaft, the method includes:

[0030] Perform sandblasting on the sandblasting area corresponding to the special-shaped shaft.

[0031] Exemplarily, the step of sandblasting the sandblasting area corresponding to the special-shaped shaft includes:

[0032] Support the special-shaped shaft at the supporting position by means of a supporting fixture;

[0033] Install the sandblasting protection tooling on the side of the disc body away from the shaft body;

[0034] Sandblast the blasted area.

[0035] Exemplarily, after the step of sandblasting the sandblasting area corresponding to the special-shaped shaft, the method further comprises:

[0036] Boring the special-shaped shaft after sandblasting;

[0037] The special-shaped shaft after boring is repaired by clamping.

[0038] A series of simplified concepts are introduced in the summary of the invention, which will be further described in detail in the detailed description. The summary of the invention is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0039] The advantages and features of the present invention are described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The following drawings of the present invention are used as part of the present invention for understanding the present invention. The drawings show the embodiments of the present invention and their descriptions, and are used to explain the principles of the present invention. In the drawings,

[0041] Figure 1 is a flow chart of a method for processing a special-shaped shaft according to an exemplary embodiment of the present invention;

[0042] Figure 2is a cross-sectional view of a blank body according to an exemplary embodiment of the present invention;

[0043] Figure 3 is a cross-sectional view of a first clamping tool according to an exemplary embodiment of the present invention;

[0044] Figure 4 is a cross-sectional view of a special-shaped shaft processing body according to an exemplary embodiment of the present invention;

[0045] Figure 5-6 A schematic structural diagram of a blank body and a supporting tooling according to an exemplary embodiment of the present invention;

[0046] Figure 7 It is a schematic structural diagram of a special-shaped shaft and a sandblasting protective tooling according to an exemplary embodiment of the present invention.

[0047] The above drawings include the following reference numerals:

[0048] 10', blank body; 10, special-shaped shaft processing body; 100, special-shaped shaft; 110, shaft body; 1101, surfacing area; 120, disc body; 1201, sandblasting area; 1202, first mounting groove; 1210, first support disc; 1220, second support disc; 1230, shaft disc flange; 1240, shaft head rib plate; 20, supporting tooling; 210, supporting frame; 220, fixing part; 30, first clamping tooling; 310, columnar structure; 320, disc structure; 40, sandblasting protection tooling. DETAILED DESCRIPTION

[0049] In the following description, a large amount of details are provided so that the present invention can be thoroughly understood. However, it will be appreciated by those skilled in the art that the following description only exemplarily illustrates a preferred embodiment of the present invention, and the present invention can be implemented without one or more such details. In addition, in order to avoid confusion with the present invention, some technical features well known in the art are not described in detail.

[0050] In order to fully understand the embodiments of the present invention, detailed structures will be presented in the following description. Obviously, the implementation of the embodiments of the present invention is not limited to the specific details familiar to those skilled in the art. The preferred embodiments of the present invention are described in detail below, but in addition to these detailed descriptions, the present invention may also have other embodiments.

[0051] The embodiment of the present invention provides a method for processing a special-shaped shaft. The special-shaped shaft produced by the method is suitable for an axial flow wind tunnel compressor. Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 The special-shaped shaft processing method includes the following steps.

[0052] Step S100, prefabricating a blank body 10'.

[0053] The blank body 10' may be a welded body formed by welding a plurality of parts. Figure 2 , the blank body 10' may include a shaft body 110 and a disc body 120 welded to one end of the shaft body 110. The disc body 120 may include a first support disc 1210, a second support disc 1220, a shaft disc flange 1230 and a shaft head rib plate 1240. Exemplarily, step S100 may include: step S110, welding the shaft body 110, the first support disc 1210, the second support disc 1220, the shaft disc flange 1230 and the shaft head rib plate 1240 to form a welded part. Exemplarily, step S120 may be performed after step S110, including: relieving stress of the welded part. Step S120 may eliminate the welding stress generated by welding the welded part. Exemplarily, step S130 may be performed after step S120, including: heat treating the welded part after stress relief. Heat treatment may include operations such as quenching and tempering, which will not be described in detail here. Exemplarily, after step S130, step S140 may be performed, including: performing a performance test on the welded part after heat treatment. In this step, the hardness and mechanical properties of the welded part after heat treatment may be tested. Exemplarily, after step S140, step S150 may be performed, including: performing a shot peening operation on the welded part after performance test. The welded part is shot peened as a whole to strengthen the surface. Exemplarily, after step S150, step S160 may be performed, including: performing an ultrasonic test and a coloring test on the weld of the welded part after shot peening to obtain a blank 10'. Among them, 100% ultrasonic flaw detection is performed on the weld, and 100% coloring inspection is performed on the weld.

[0054] Step S200 , performing rough boring preparation on the blank body 10 ′.

[0055] The blank body 10' is rough bored and prepared for subsequent rough turning operations. Step S200 specifically includes:

[0056] Step S210 , supporting the blank 10 ′ at a supporting position by using the supporting tool 20 .

[0057] The supporting tool 20 can support and position the blank 10' to facilitate boring and other operations. Figure 5 and Figure 6The supporting tool 20 includes a supporting frame 210 and a fixing member 220. The fixing member 220 can clamp and install the blank body 10'. For example, the outer edge of the shaft disc flange 1230 and the end face of the shaft disc flange 1230 are used as references to align the blank body 10' with a table, so that the blank body 10' is in the supporting position. After the blank body 10' is in the supporting position, the margin of each part of the blank body 10' is checked.

[0058] In step S220 , a first initial installation end surface is bored out at the end of the disk body 120 away from the shaft body 110 , and a second initial installation end surface is bored out at an end of the shaft body 110 away from the disk body 120 .

[0059] Reference Figure 2 and Figure 6 The first initial installation end surface and the second initial installation end surface are respectively located at opposite ends of the blank body 10'. The arrangement of the first initial installation end surface and the second initial installation end surface facilitates subsequent operations on the first initial installation end surface and the second initial installation end surface.

[0060] Step S230, installing the first clamping tool 30 to the first initial installation end surface.

[0061] Combined with reference Figure 2 and Figure 3 The first clamping tool 30 may include a disc-shaped structure 320 and a columnar structure 310 connected to the disc-shaped structure 320, the disc-shaped structure 320 is connected to the first initial installation end face, and at least part of the columnar structure 310 protrudes from the first initial installation end face for installation and fixation with an external lathe mounting part.

[0062] Step S240, a first center hole is machined on the first clamping fixture 30, and a second center hole is machined on the second initial installation end surface, wherein the axis of the first center hole coincides with the axis of the second center hole.

[0063] The line connecting the center of the first center hole and the center of the second center hole can be used as the center line of subsequent clamping. The setting of the first clamping fixture 30 facilitates the subsequent installation and fixation with the external lathe mounting parts. Steps S210, S220, S230 and S240 are all performed when the blank body 10' is in the supporting position, that is, in steps S210, S220, S230 and S240, the blank body 10' is always on the supporting fixture 20, so that the movement of the blank body 10' can be minimized.

[0064] Step S250 , installing the blank body 10 ′ to a lathe station by means of a first clamping fixture 30 .

[0065] The first clamping fixture 30 can better fix the blank 10 ′ on the lathe station to ensure the accuracy of subsequent lathe-related steps.

[0066] Step S300, rough turning the blank body 10' prepared by rough boring to form a special-shaped shaft processing body;

[0067] Specifically, step S300 may include: step S310, checking the blank body 10' for alignment; step S320, checking the deformation of the blank body 10'; step S330, checking the machining allowance of each part of the blank body 10'; step S340, rough turning each part of the blank body 10' and leaving a 3mm allowance on one side; that is, forming a special-shaped shaft processing body;

[0068] Step S400 , performing surfacing welding on the special-shaped shaft processing body 10 .

[0069] The surfacing step can improve the surface hardness of this part of the special-shaped shaft processing body 10, that is, improve the surface hardness of the special-shaped shaft after processing, so as to ensure the safety and stability of the operation of the special-shaped shaft.

[0070] Step S500 , semi-finishing the special-shaped shaft processed body 10 after surfacing welding.

[0071] Semi-finishing can be understood as a second machining process based on rough boring and rough turning. The machining accuracy of semi-finishing is greater than that of rough boring and rough turning.

[0072] Step S600 , finishing the semi-finished special-shaped shaft processing body 10 to form the special-shaped shaft 100 .

[0073] That is to say, the irregular shaft processed body 10 formed after the rough boring and rough turning of the blank body 10' needs to be subjected to semi-finishing and finishing in sequence to ensure the accuracy of the irregular shaft obtained after processing.

[0074] In the special-shaped shaft processing method provided in the present application, the rough boring of the blank body 10' is performed by the first clamping fixture 30, so that the blank body 10' and the special-shaped shaft processing body 10 formed by the blank body 10' can be installed and fixed on a lathe or other equipment for turning to ensure the processing accuracy. In the step of preparing for the rough boring of the blank body 10', the first clamping fixture 30 is installed, and the blank body 10' is always supported on the supporting fixture 20, which reduces the movement of the blank body 10' and simplifies the processing process. The supporting fixture 20 can realize the horizontal clamping and fixation of the blank body 10' and the special-shaped shaft processing body 10 formed by the blank body 10', thereby realizing the processing of the first center hole and the second center hole.

[0075] Exemplarily, step S230 may include:

[0076] Step S231, boring a first mounting groove 1202 on the first initial mounting end surface; step S232, installing the first clamping fixture 30 into the first mounting groove 1202. This arrangement can ensure the stability of the connection between the first clamping fixture 30 and the blank body 10'. The shape of the first mounting groove 1202 can be adapted to the first mounting groove 1202. Exemplarily, the first mounting groove 1202 can include a stopper and an internal screw hole. Further, the internal screw hole can be formed by tapping. Exemplarily, the first clamping fixture 30 can be installed in the first mounting groove 1202 by interference fit.

[0077] For example, refer to Figure 4 , the blank body 10' may include a shaft body 110 and a disk body 120 connected to one end of the shaft body 110, the first initial installation end face is located on the disk body 120, the second initial installation end face is located on the shaft body 110, and a surfacing area 1101 is formed on the side of the shaft body 110 away from the second initial installation end face. Step S400 may include: step S450, turning the surfacing area 1101 so that a base for surfacing is formed in the surfacing area 1101; step S470, surfacing the surfacing area 1101. The surfacing coating may include a nickel-based alloy. The coating may improve the surface hardness of the part of the special-shaped shaft processing body 10 corresponding to the surfacing area 1101, that is, improve the surface hardness of the special-shaped shaft after processing. Exemplarily, after the part of the special-shaped shaft processing body 10 corresponding to the surfacing area 1101 is surfacing with a nickel-based alloy coating, the surface hardness may be greater than or equal to 58HRC. Exemplarily, the coating thickness may be not less than 0.5mm. In step S470, the special-shaped shaft processing body 10 needs to be removed from the lathe and installed on the surfacing equipment.

[0078] For example, step S460 may be included between step S450 and step S470 to perform color inspection on the substrate. Nondestructive testing is performed on the substrate to ensure that the substrate has no surface cracks and other problems, so as to ensure the subsequent surfacing effect and further ensure the safety of the special-shaped shaft during operation.

[0079] For example, after step S470, step S480 may be further included to perform a coloring inspection on the surface of the coating layer to check whether there are bubbles inside the coating layer itself.

[0080] Exemplarily, step S480 may include step S485, disassembling the first clamping tool 30. Disassembling the first clamping tool 30 facilitates subsequent operations such as stress relief.

[0081] Exemplarily, after step S480, step S490 may also be included. Step S490 includes: relieving stress on the special-shaped shaft processing body 10 after surfacing. Stress relief can eliminate welding stress and machining stress. In the embodiment with step S120, although both step S490 and step S120 are stress relief, since the stress relief operations are in different steps, the corresponding states of the workpieces are also different. The specific operations of stress relief in step S490 and step S120 are also different, including but not limited to different temperatures and different durations. The purpose of different stress relief operations is to eliminate the residual stress in the workpiece.

[0082] Exemplarily, step S500 may include: step S510, performing semi-finishing boring preparation on the shaped shaft processing body 10 after surfacing welding. Performing semi-finishing boring on the shaped shaft processing body 10 is performed to prepare for subsequent semi-finishing turning and other operations.

[0083] Exemplarily, step S510 may include:

[0084] Step S512, supporting the special-shaped shaft processing body 10 at the supporting position by the supporting tool 20. That is, the special-shaped shaft processing body 10 is installed on the supporting tool 20 to perform subsequent semi-finishing boring and other operations.

[0085] Step S513, semi-finish boring the first preliminary installation end face to form a first fine installation end face, and semi-finish boring the second preliminary installation end face to form a second fine installation end face. The first fine installation end face can be formed by boring the first preliminary installation end face. The second preliminary installation end face can be formed by boring the second preliminary installation end face.

[0086] Step S514: boring a second installation groove on the first fine installation end surface.

[0087] Step S515: Install the second clamping tool into the second installation slot.

[0088] Step S516, a third center hole is machined on the second fixture, and a fourth center hole is machined on the second precision installation end face, and the axis of the third center hole and the axis of the fourth center hole both coincide with the axis of the special-shaped shaft processing body 10. The line connecting the center of the third center hole and the center of the fourth center hole can be used as the center line of subsequent fixture.

[0089] Steps S512, S513, S514, S515 and S516 are all performed when the special-shaped shaft processing body 10 is in the supporting position, that is, in steps S512, S513, S514, S515 and S516, the special-shaped shaft processing body 10 is always on the supporting fixture 20, so as to minimize the movement of the special-shaped shaft processing body 10. The supporting fixture 20 can realize the horizontal clamping and fixing of the special-shaped shaft processing body 10, thereby realizing the processing of the third center hole center and the fourth center hole center.

[0090] After the stress relief of the special-shaped shaft processing body 10, its own structure will inevitably have a certain degree of change. Semi-finishing boring of the special-shaped shaft processing body 10 can find the center line again on the basis of the special-shaped shaft processing body 10 after stress relief to ensure the accuracy of subsequent operations. The setting of the second clamping fixture can make it better installed on the lathe for subsequent turning operations.

[0091] Step S500 may include: step S550, semi-finishing turning the semi-finished special-shaped shaft processing body 10. Exemplarily, step S550 may include: step S551, installing the special-shaped shaft processing body 10 to the lathe station through the second clamping fixture; step S552, checking the table for alignment of the clamped special-shaped shaft processing body 10; step S553, checking the size and machining allowance of each part of the special-shaped shaft processing body 10; step S554, semi-finishing turning each part of the special-shaped shaft processing body 10, leaving a 2mm allowance on one side. In this way, the special-shaped shaft processing body 10 is further processed, and multi-level processing can better ensure the accuracy of the processed special-shaped shaft.

[0092] Exemplarily, step S554 may include the following steps: step S5541, machining the outer circle of the shaft disc flange 1230 to an upper limit according to a specified size; step S5542, the shaft disc flange 1230 has a sandblasting area 1201 at the axial end face, and the sandblasting area 1201 is turned so that the roughness of the sandblasting area 1201 reaches Ra6.3; step S5543, machining the outer end face of the first support disc 1210 and the outer end face of the second support disc 1220 according to the specified size, the outer end face of the first support disc 1210 is conical and machined to a predetermined size (which can be understood as the drawing size); step S5544, turning the radial parts of the shaft body 110, the arc structure at the connection between the disc body 120 and the shaft body 110, and the end face of the shaft body 110 away from the disc body 120, and leaving a 2mm margin.

[0093] Exemplarily, step S600 may include: step S610, finishing turning the semi-finished special-shaped shaft processing body 10 to form the special-shaped shaft 100. The special-shaped shaft processing body 10 is subjected to multiple boring and turning to ensure processing efficiency and processing accuracy. Specifically, in step S610, the special-shaped shaft processing body 10 may be first clamped, aligned, and the machining allowance of each part may be checked, each part of the special-shaped shaft processing body 10 may be finished turned, the shaft diameter of the bearing area may be ground, and the vibration measurement area may be rolled.

[0094] Exemplarily, after step S610, the following may be included: step S650, performing magnetic particle inspection and clamp repair on the special-shaped shaft 100. Specifically, step S651 includes: performing magnetic particle inspection on each part of the special-shaped shaft 100; step S652: performing clamp repair on the special-shaped shaft 100 after magnetic particle inspection. Among them, magnetic particle inspection can be performed on each part of the special-shaped shaft 100 to ensure the processing accuracy. The clamp repair process may include cleaning each part, removing burrs, etc., disassembling the second clamping fixture, and protecting each part of the special-shaped shaft 100 to avoid bumps and scratches.

[0095] For example, a sandblasting area 1201 may be formed at the radial outer edge of the disc body 120. After step S610, the method may further include: step S630, sandblasting the sandblasting area 1201 corresponding to the special-shaped shaft 100. The sandblasting of the sandblasting area 1201 may further increase the friction coefficient of the friction area. In step S5542, turning may make the roughness of the sandblasting area 1201 reach Ra6.3. After step S630, the roughness of the sandblasting area 1201 may reach Ra12.5.

[0096] For example, in conjunction with reference Figure 6 and Figure 7 , step S630 may include the following steps: step S631, supporting the special-shaped shaft 100 at the supporting position by the supporting fixture 20; step S632, installing the sandblasting protection fixture 40 on the side of the plate body 120 away from the shaft body 110; step S633, sandblasting the sandblasting area 1201. In this way, when the sandblasting area 1201 is sandblasted, other parts of the special-shaped shaft 100 can be prevented from being affected. The supporting fixture 20 supports the special-shaped shaft 100, makes fuller use of the supporting fixture 20, minimizes the movement of the special-shaped shaft 100, and makes the processing more efficient.

[0097] For example, after step S630, step S660 may be further included to perform boring processing on the sandblasted special-shaped shaft 100. Specifically, step S660 may include:

[0098] Step S661, supporting the sandblasted special-shaped shaft 100 by the supporting tool 20;

[0099] Step S662, boring the engagement holes, the bottom holes of the screw holes, and tapping the threads at the circumference of the end surface of the shaft plate flange 1230;

[0100] Step S663, boring the bottom holes of the screw holes at various locations on the circumference of the end surface of the shaft body 110 away from the disk body 120, and tapping the threads.

[0101] For example, after step S660, step S670 may be further included: cleaning with pliers. Clean all parts of the special-shaped shaft 100, perform an endoscopic inspection on the space between the first support plate 1210 and the second support plate 1220, and seal the open space after confirming that there are no iron filings or any other foreign matter.

[0102] After step S670, step S710 may be further included, in which the quality control department performs an endoscopic inspection again for confirmation.

[0103] After step S710, step S720 may be further included, demagnetization. This step may be performed according to the mechanical and electrical runout test process specifications, and will not be described in detail here.

[0104] After step S720, step S730 may be included to measure electrical jump. This step can be performed according to the process rules for mechanical jump and electrical jump test, and the test data is recorded and handed over to the technician for storage.

[0105] After step S730, step S740 may be further included: dynamic balancing. This step is performed in accordance with the operating process of the dynamic balancing machine, using a belt drive method, and the remaining unbalance is not greater than a predetermined value, and weight is removed.

[0106] After step S740, step S750 may be further included: assembling the processed special-shaped shaft 100 and the rotor.

[0107] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by directional words such as "front", "back", "up", "down", "left", "right", "lateral", "vertical", "vertical", "horizontal", "top", "bottom", etc. is usually based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words 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 cannot be understood as limiting the scope of protection of the present invention; the directional words "inside" and "outside" refer to the inside and outside relative to the contour of each component itself.

[0108] For ease of description, regional relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the regional positional relationship between one or more components or features shown in the figure and other components or features. It should be understood that regional relative terms include not only the orientation of the components as described in the figure, but also different orientations in use or operation. For example, if the components in the accompanying drawings are inverted as a whole, the components "above other components or features" or "above other components or features" will include the situation where the components are "below other components or structures" or "below other components or structures". Therefore, the exemplary term "above" may include both "above" and "below". In addition, these components or features may also be positioned at other different angles (e.g., rotated 90 degrees or other angles), and this article is intended to include all of these situations.

[0109] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, parts, components and / or combinations thereof.

[0110] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0111] The present invention has been described by the above embodiments, but it should be understood that the above embodiments are only for the purpose of example and description, and are not intended to limit the present invention to the scope of the described embodiments. In addition, it can be understood by those skilled in the art that the present invention is not limited to the above embodiments, and more variations and modifications can be made according to the teachings of the present invention, and these variations and modifications all fall within the scope of the protection claimed by the present invention. The protection scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A method for processing a special-shaped shaft, characterized in that: include: A prefabricated blank body, the blank body comprising a shaft body and a disc body welded to one end of the shaft body; The blank body is prepared for rough boring, including supporting the blank body at a supporting position by a supporting tool, boring a first preliminary installation end face at an end of the disk body away from the shaft body, boring a second preliminary installation end face at an end of the shaft body away from the disk body, installing a first clamping tool to the first preliminary installation end face, machining a first center hole on the first clamping tool, machining a second center hole on the second preliminary installation end face, the axis of the first center hole coincides with the axis of the second center hole, and mounting the blank body to a lathe station by the first clamping tool; Rough turning the blank body after rough boring preparation to form a special-shaped shaft processing body; Performing surfacing welding on the special-shaped shaft processing body; Performing semi-finishing machining on the special-shaped shaft processed body after surfacing welding; The semi-finished special-shaped shaft processed body is finished to form the special-shaped shaft.

2. The method for processing a special-shaped shaft according to claim 1, characterized in that: The step of installing the first clamping tool to the first initial installation end surface includes: Boring a first installation groove on the first initial installation end surface; Install the first clamping tool into the first installation slot.

3. The method for processing a special-shaped shaft according to claim 1, characterized in that: A surfacing area is formed on one side of the shaft body away from the second initial installation end face, and the step of surfacing the special-shaped shaft processing body comprises: Turning the surfacing area to form a base for surfacing in the surfacing area; The surfacing area is subjected to surfacing welding.

4. The method for processing a special-shaped shaft according to claim 3, characterized in that: Before the step of semi-finishing the processed special-shaped shaft after surfacing welding, the step includes: relieving stress of the processed special-shaped shaft after surfacing welding.

5. The method for processing a special-shaped shaft according to claim 4, characterized in that: The step of semi-finishing the special-shaped shaft processed body after surfacing welding comprises: Performing semi-finish boring preparation on the special-shaped shaft processed body after surfacing welding; The semi-finishing boring of the special-shaped shaft processed body is semi-finishing turned.

6. The method for processing a special-shaped shaft according to claim 5, characterized in that: The step of semi-finish boring the special-shaped shaft processed body after surfacing welding comprises: Supporting the special-shaped shaft processing body at the supporting position by the supporting tool; Performing semi-finishing boring on the first preliminary installation end surface to form a first fine installation end surface, and performing semi-finishing boring on the second preliminary installation end surface to form a second fine installation end surface; Boring a second installation groove on the first precision installation end surface; Install a second clamping tool into the second installation slot; A third center hole is processed on the second clamping fixture, and a fourth center hole is processed on the second precision installation end face. The axis of the third center hole and the axis of the fourth center hole both coincide with the axis of the special-shaped shaft processing body.

7. The method for processing a special-shaped shaft according to claim 1, characterized in that: The step of performing finish machining on the semi-finished processed special-shaped shaft body comprises: performing finish machining on the semi-finished processed special-shaped shaft body to form the special-shaped shaft.

8. The method for processing a special-shaped shaft according to claim 7, characterized in that: A sandblasting area is formed at the radial outer edge of the disc body, and the semi-finished turning of the special-shaped shaft processing body is finished to form the special-shaped shaft, which includes: The sandblasting area corresponding to the special-shaped shaft is sandblasted.

9. The method for processing a special-shaped shaft according to claim 8, characterized in that: The step of sandblasting the sandblasting area corresponding to the special-shaped shaft comprises: Supporting the special-shaped shaft at the supporting position by the supporting tool; Install a sandblasting protective tooling on the side of the disc body away from the shaft body; The blasting area is blasted.

10. The method for processing a special-shaped shaft according to claim 8, characterized in that: After the step of sandblasting the sandblasting area corresponding to the special-shaped shaft, the method further comprises: Boring the special-shaped shaft after sandblasting; The special-shaped shaft after boring is subjected to clamp repair processing.

Images