CN109277783B - Arc-shaped piece machining method - Google Patents
Arc-shaped piece machining method Download PDFInfo
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- CN109277783B CN109277783B CN201811282415.7A CN201811282415A CN109277783B CN 109277783 B CN109277783 B CN 109277783B CN 201811282415 A CN201811282415 A CN 201811282415A CN 109277783 B CN109277783 B CN 109277783B
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- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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Abstract
The invention provides a processing method of an arc-shaped piece, which is used for processing the arc-shaped piece, wherein the wall surface of the arc-shaped piece is provided with a plurality of vent holes, and the end surface of the arc-shaped piece is provided with a sealing groove, and comprises the following steps: a. obtaining a ring-shaped piece by forging; b. roughly machining the annular piece to remove allowance; c. semi-finish machining is carried out on the annular piece to obtain a datum plane; d. performing finish machining on the annular piece according to the datum plane; e. processing vent holes on the wall surface of the annular piece; f. cutting the annular part to obtain an arc-shaped part; g. and processing a sealing groove on the end surface of the arc-shaped piece. The annular piece is convenient for clamping and positioning, is convenient for processing, can ensure that the inner profile and the outer profile of the annular piece are coaxial, and is uniformly stressed after being clamped, so that the annular piece is not easy to deform. The arc-shaped part is obtained by converting the arc-shaped part into annular part processing and then cutting the processed annular part. And finally, processing a sealing groove on the end surface of the arc-shaped part, thus finishing the processing of the arc-shaped part.
Description
Technical Field
The invention relates to the technical field of arc-shaped piece processing, in particular to an arc-shaped piece processing method.
Background
As shown in fig. 1, 2 and 3, the arc-shaped piece has a plurality of vent holes on the wall surface, cross radial sealing grooves and axial sealing grooves on the end surface, and has high coaxiality requirement of the inner profile and the outer profile and high machining precision requirement. Because the arc-shaped part is a thin-wall part, the arc-shaped part is easy to deform, the processing precision and the product quality are affected, the arc-shaped part is difficult to meet the design requirements, and the arc-shaped part is frequently required to be repaired.
Disclosure of Invention
The invention provides a processing method of an arc-shaped part, which aims to solve the problems of processing the arc-shaped part with high quality, high efficiency and low cost and meeting the design requirement.
The technical scheme adopted by the invention is as follows:
the invention provides a processing method of an arc-shaped part, which is used for processing the arc-shaped part, wherein the wall surface of the arc-shaped part is provided with a plurality of vent holes, and the end surface of the arc-shaped part is provided with a sealing groove, and the processing method comprises the following steps: a. obtaining a ring-shaped piece by forging; b. roughly machining the annular piece to remove allowance; c. semi-finish machining is carried out on the annular piece to obtain a datum plane; d. performing finish machining on the annular piece according to the datum plane; e. processing vent holes on the wall surface of the annular piece; f. cutting the annular part to obtain an arc-shaped part; g. and processing a sealing groove on the end surface of the arc-shaped piece.
Further, step b is preceded by the step of solution ageing the ring-shaped element.
Further, in the step c, semi-finishing is performed on the ring-shaped member, and the reference surface is specifically obtained by: performing semi-finishing on the outer profile of the annular piece to obtain a first step surface and a second step surface; performing semi-finishing on the inner profile of the annular piece to obtain a third step surface; and semi-finishing the bottom surface, the top surface, the inner molded surface, the outer molded surface and the first step surface of the ring-shaped piece into datum surfaces.
Further, the step d of finishing the ring-shaped member according to the reference surface specifically includes: performing finish machining on the first step surface of the annular part according to the reference surface to obtain a first groove; performing finish machining on the top surface of the annular piece according to the datum plane to obtain a second groove; and performing finish machining on the third step surface of the annular part according to the datum plane to obtain a third groove.
Further, step d adopts anchor clamps clamping ring shape piece in order to process the ring shape piece: the bottom surface of the ring-shaped piece is supported on a base of the clamp, and a supporting mechanism is used for supporting the inner profile surface of the ring-shaped piece to enable the ring-shaped piece to be coaxial with the base; processing the top surface and the outer profile of the annular piece; pressing the top surface of the ring-shaped piece by using a pressing mechanism, and then removing the propping of the propping mechanism to the inner profile of the ring-shaped piece so as to keep the positioning reference of the processing of the inner profile of the ring-shaped piece consistent with the positioning reference of the processing of the top surface and the positioning reference of the processing of the outer profile; and machining the inner profile of the annular piece.
Further, the step e of processing the vent holes on the wall surface of the ring-shaped member specifically comprises: marking the position of a positioning hole on the ring wall of the ring-shaped piece, and machining the positioning hole by adopting a plurality of mills; and determining the position of the vent hole by using the positioning hole, and processing the vent hole by using laser.
Further, the step f of cutting the ring-shaped member to obtain an arc-shaped member is as follows: the position to be cut is determined by the positioning hole, and the ring-shaped piece is cut by linear cutting.
Further, the step g of processing the sealing groove on the end face of the arc-shaped part specifically comprises: firstly, machining an axial sealing groove by adopting electric spark, then machining a radial sealing groove by adopting linear cutting, and enabling the radial sealing groove to be crossed with the axial sealing groove to obtain the sealing groove.
Further, step c is preceded by the step of performing ultrasonic inspection on the annular member.
Further, step g is followed by the step of performing fluorescence detection and warehousing on the arc-shaped piece.
The invention has the following beneficial effects:
according to the processing method of the arc-shaped part, the annular part is obtained through forging, so that the mechanical property and the mechanical property of the annular part are better than those of other manufacturing methods. The allowance is quickly removed through rough machining of the annular piece, then semi-finish machining is carried out on the annular piece, the datum plane is obtained, and finish machining is carried out on the annular piece according to the datum plane, so that the machining time is shortened, the machining efficiency is improved, and the product quality and the machining precision are guaranteed. And processing vent holes on the wall surface of the annular piece, and then cutting the annular piece to obtain an arc-shaped piece. The annular piece is convenient for clamping and positioning, is convenient for processing, can ensure that the inner profile and the outer profile of the annular piece are coaxial, and is uniformly stressed after being clamped, so that the annular piece is not easy to deform. The arc-shaped part is obtained by converting the arc-shaped part into annular part processing and then cutting the processed annular part. And finally, processing a sealing groove on the end surface of the arc-shaped part, thus finishing the processing of the arc-shaped part. The processing method of the arc-shaped part can ensure that the inner profile surface and the outer profile surface of the arc-shaped part are coaxial, ensure that the product quality and the processing precision are ensured, meet the design requirements, reduce the scrapping loss, reduce the repair, save the repair working time and cost and reduce the cost.
In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is one of the schematic illustrations of an arcuate member of a preferred embodiment of the invention;
FIG. 2 is a second schematic view of an arcuate member of the preferred embodiment of the invention;
FIG. 3 is a third schematic view of an arcuate member of the preferred embodiment of the present invention;
FIG. 4 is a schematic flow chart of a method of manufacturing an arcuate member according to a preferred embodiment of the present invention;
FIG. 5 is a schematic representation of an annular member obtained by forging in accordance with a preferred embodiment of the present invention;
FIG. 6 is a schematic illustration of a preferred embodiment of the present invention for semi-finishing an annular part;
FIG. 7 is a schematic illustration of a preferred embodiment of the present invention for finishing an annular part;
FIG. 8 is one of the schematic views of a jig for machining a ring-shaped member according to a preferred embodiment of the present invention;
FIG. 9 is a second schematic view of a fixture for machining a ring according to a preferred embodiment of the present invention;
FIG. 10 is a schematic view of a pilot hole machining in accordance with a preferred embodiment of the present invention;
FIG. 11 is one of the schematic illustrations of the fabrication of the vent of the preferred embodiment of the present invention;
FIG. 12 is a second schematic view of the fabrication of a vent in accordance with the preferred embodiment of the present invention;
FIG. 13 is a schematic view of a preferred embodiment of the present invention with the ring cut away;
FIG. 14 is a schematic view of a preferred embodiment of the present invention for machining an axial seal groove;
FIG. 15 is a schematic view of the machining of a radial seal groove of the preferred embodiment of the present invention.
Description of reference numerals:
1. an annular member; 101. a vent hole; 102. a first step surface; 103. a second step surface; 104. a third step surface; 105. a first groove; 106. a second groove; 107. a third groove; 108. positioning holes; 109. an axial sealing groove; 110. a radial sealing groove; 2. a base; 3. a slider; 4. positioning blocks; 5. a first cover plate; 6. a second cover plate; 7. an italic; 8. a mandrel; 9. a limiting groove; 10. a limiting member; 11. a first nut; 12. a wrench; 13. a chute; 14. a bolt; 15. a spring; 16. pressing a plate; 17. a screw hole; 18. a screw; 19. a second nut.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
FIG. 1 is one of the schematic illustrations of an arcuate member of a preferred embodiment of the invention; FIG. 2 is a second schematic view of an arcuate member of the preferred embodiment of the invention; FIG. 3 is a third schematic view of an arcuate member of the preferred embodiment of the present invention; FIG. 4 is a schematic flow chart of a method of manufacturing an arcuate member according to a preferred embodiment of the present invention; FIG. 5 is a schematic representation of an annular member obtained by forging in accordance with a preferred embodiment of the present invention; FIG. 6 is a schematic illustration of a preferred embodiment of the present invention for semi-finishing an annular part; FIG. 7 is a schematic illustration of a preferred embodiment of the present invention for finishing an annular part; FIG. 8 is one of the schematic views of a jig for machining a ring-shaped member according to a preferred embodiment of the present invention; FIG. 9 is a second schematic view of a fixture for machining a ring according to a preferred embodiment of the present invention; FIG. 10 is a schematic view of a pilot hole machining in accordance with a preferred embodiment of the present invention; FIG. 11 is one of the schematic illustrations of the fabrication of the vent of the preferred embodiment of the present invention; FIG. 12 is a second schematic view of the fabrication of a vent in accordance with the preferred embodiment of the present invention; FIG. 13 is a schematic view of a preferred embodiment of the present invention with the ring cut away; FIG. 14 is a schematic view of a preferred embodiment of the present invention for machining an axial seal groove; FIG. 15 is a schematic view of the machining of a radial seal groove of the preferred embodiment of the present invention.
As shown in fig. 4, the method for processing an arc-shaped part according to the embodiment is used for processing an arc-shaped part, a plurality of vent holes are formed in the wall surface of the arc-shaped part, and a sealing groove is formed in the end surface of the arc-shaped part, and includes the following steps: a. obtaining an annular element 1 by forging; b. roughly machining the annular part 1 to remove allowance; c. semi-finishing the annular piece 1 to obtain a reference surface; d. finish machining the annular member 1 according to the datum plane; e. processing a vent hole 101 on the wall surface of the annular member 1; f. cutting the annular part 1 to obtain an arc-shaped part; g. and processing a sealing groove on the end surface of the arc-shaped piece. According to the processing method of the arc-shaped part, the annular part 1 is obtained through forging, so that the mechanical property and the mechanical property of the annular part 1 are better than those of other manufacturing methods. The allowance is removed quickly by performing rough machining on the ring-shaped part 1, then the ring-shaped part 1 is subjected to semi-finish machining to obtain a reference surface, and then the ring-shaped part 1 is subjected to finish machining according to the reference surface, so that the machining time is shortened, the machining efficiency is improved, and the product quality and the machining precision are guaranteed. A vent hole 101 is formed in the wall surface of the ring member 1, and the ring member 1 is cut to obtain an arc-shaped member. The annular piece 1 is convenient for clamping and positioning, is convenient for processing, can ensure that the inner profile and the outer profile of the annular piece 1 are coaxial, and is uniformly stressed after the annular piece 1 is clamped, so that the annular piece 1 is not easy to deform. The arc-shaped part is processed by converting the arc-shaped part into the annular part 1 and then cutting the processed annular part 1, so that the arc-shaped part can be obtained. And finally, processing a sealing groove on the end surface of the arc-shaped part, thus finishing the processing of the arc-shaped part. The processing method of the arc-shaped part can ensure that the inner profile surface and the outer profile surface of the arc-shaped part are coaxial, ensure that the product quality and the processing precision are ensured, meet the design requirements, reduce the scrapping loss, reduce the repair, save the repair working time and cost and reduce the cost.
As shown in fig. 5, in this embodiment, step b further includes a step of solution aging the ring 1. The ring-shaped member 1 is subjected to solid solution aging treatment, so that the ring-shaped member 1 can meet the hardness requirement. The solid solution treatment and the aging treatment are continuously carried out, so that the heat treatment time is shortened, and the processing efficiency is improved. Even if the aging treatment enables the ring-shaped member 1 to have residual thermal stress, the subsequent stress release of the ring-shaped member 1 generates deformation, the deformation can be removed when the ring-shaped member 1 is roughly machined, and the design requirement can be met when the ring-shaped member 1 is precisely machined.
As shown in fig. 6, in the present embodiment, the ring-shaped member 1 is semi-finished in step c, and the reference surfaces are specifically: performing semi-finishing on the outer profile of the ring-shaped member 1 to obtain a first step surface 102 and a second step surface 103; performing semi-finishing on the inner profile of the ring-shaped member 1 to obtain a third step surface 104; the bottom, top, inner, outer and first step faces 102 of the ring 1 are semi-finished to datum faces. The first step surface 102, the second step surface 103 and the third step surface 104 are obtained by machining first, and the reference surface is machined, so that subsequent fine machining is facilitated.
As shown in fig. 7, in the present embodiment, the step d of finishing the ring-shaped member 1 according to the reference surface specifically includes: performing finish machining on the first step surface 102 of the annular member 1 according to the reference surface to obtain a first groove 105; performing finish machining on the top surface of the ring-shaped member 1 according to the reference surface to obtain a second groove 106; the third step surface 104 of the ring member 1 is finished with reference to the reference surface, resulting in a third groove 107. The first groove 105, the second groove 106, and the third groove 107 are machined according to the reference surface, and the desired outer shape of the ring 1 is obtained.
As shown in fig. 8 and 9, in this embodiment, step d uses a fixture to clamp the ring-shaped member 1 to process the ring-shaped member 1: the bottom surface of the ring-shaped element 1 is supported on a base 2 of the clamp, and a supporting mechanism is used for supporting the inner profile surface of the ring-shaped element 1 to enable the ring-shaped element 1 to be coaxial with the base 2; processing the top surface and the outer profile of the ring-shaped piece 1; pressing the top surface of the ring-shaped member 1 by using a pressing mechanism, and then removing the propping of the propping mechanism on the inner molded surface of the ring-shaped member 1, so that the positioning reference of the processing of the inner molded surface of the ring-shaped member 1 is consistent with the positioning reference of the processing of the top surface and the positioning reference of the processing of the outer molded surface; the inner profile of the annular element 1 is machined.
As shown in fig. 10, 11 and 12, in this embodiment, the step e of machining the vent holes 101 in the wall surface of the ring 1 specifically includes: marking the position of a positioning hole 108 on the ring wall of the ring-shaped member 1, and machining the positioning hole 108 by adopting a plurality of mills; the position of the vent hole 101 is determined by the positioning hole 108, and the vent hole 101 is processed by laser. The positioning hole 108 is machined firstly, and the included angle between the vent hole 101 and the positioning hole 108 is a design value, so that the position of the vent hole 101 can be determined by utilizing the positioning hole 108, and the accurate positioning of the vent hole 101 can be ensured. The number of the positioning holes 108 is small and the diameter of the holes is large, while the number of the vent holes 101 is large and the diameter of the holes is small. The positioning holes 108 and the air holes 101 are machined through the numerical milling machine respectively, so that machining difficulty can be reduced, machining efficiency can be improved, and machining time can be shortened. Optionally, a vibrating pen is used to mark the location of the locating hole 108.
As shown in fig. 13, in this embodiment, the ring member 1 is cut in step f to obtain an arc-shaped member, which specifically includes: the location to be cut is determined by the locating hole 108 and the ring 1 is cut by wire cutting. The included angle between the position to be cut and the positioning hole 108 is a design value, the position to be cut can be determined by utilizing the positioning hole 108, and the position to be cut can be accurately positioned. The linear cutting machining efficiency is high, and the machining time is short.
As shown in fig. 14 and 15, in this embodiment, the processing of the sealing groove on the end surface of the arc-shaped member in step g specifically includes: firstly, the axial sealing groove 109 is machined by adopting electric spark, then the radial sealing groove 110 is machined by adopting linear cutting, and the radial sealing groove 110 and the axial sealing groove 109 are crossed to obtain the sealing groove. The radial sealing groove 110 and the axial sealing groove 109 are separately machined, namely the axial sealing groove 109 is machined by electric spark machining, and the radial sealing groove 110 is machined by wire cutting. The radial sealing groove 110 is a through groove, linear cutting machining can be adopted, the linear cutting machining efficiency is high, and the machining time is short. The axial sealing grooves 109 are blind grooves, and cannot be machined by linear cutting, so that electric spark machining is adopted. The axial sealing groove 109 is simple in groove type, so that the electrode is simple to manufacture, the electrode preparation time is short, the electrode tool setting time is short, the machining efficiency is greatly improved, the tool setting is simple and convenient due to the fact that the linear cutting and the electric spark are separately performed, and the machining quality is guaranteed.
In this embodiment, step c further includes a step of performing ultrasonic detection on the ring member 1. The ring-shaped member 1 is subjected to ultrasonic detection, so that defects such as air holes, slag inclusion, cracks and the like in the ring-shaped member 1 can be detected, and the ring-shaped member 1 is not damaged. If there is a defect in the annular part 1, follow-up procedures such as semi-finishing and the like are not needed to be carried out on the annular part 1, and the waste of manpower and material resources is avoided.
In this embodiment, step g further includes performing fluorescence detection and warehousing on the arc-shaped member. The arc-shaped piece is subjected to fluorescence detection, so that whether micro cracks and other defects exist on the surface of the arc-shaped piece can be detected under the condition that the arc-shaped piece is not damaged, and the arc-shaped piece can be put in storage if the arc-shaped piece is qualified.
As shown in fig. 8 and 9, the clamp for machining a ring-shaped member according to the present embodiment includes a base 2 for supporting the bottom surface of the ring-shaped member 1 and driving the ring-shaped member 1 to rotate, a plurality of abutting mechanisms disposed in the middle of the base 2 and configured to respectively move along the radial direction of the base 2 to abut against the inner profile of the ring-shaped member 1, so that the ring-shaped member 1 and the base 2 are coaxial to machine the top surface and the outer profile of the ring-shaped member 1, and a pressing mechanism disposed on the periphery of the base 2 and configured to press the top surface of the ring-shaped member 1 to machine the inner profile of the ring-shaped member 1, wherein the pressing mechanism is configured to press the top surface of the ring-shaped member 1 before the abutting mechanism abuts against the inner profile of the ring-shaped member 1, so as to ensure that the positioning reference of the inner profile. The invention discloses a clamp for machining a ring-shaped piece, which comprises a base 2, a propping mechanism and a pressing mechanism. The base 2 is mounted on the main shaft of the machine tool and is coaxial with the main shaft, and the bottom surface of the annular part 1 is supported on the base 2. When the machine tool is started, the main shaft rotates to drive the base 2 and the annular part 1 to rotate. The multiple abutting mechanisms respectively move along the radial direction of the base 2 and abut against the inner profile of the annular piece 1 from different directions, so that the annular piece 1 is coaxial with the base 2, and the annular piece 1 is coaxial with the main shaft. The abutting mechanism abuts against the inner profile of the ring-shaped member 1, so that the top surface and the outer profile of the ring-shaped member 1 are not blocked, and the top surface and the outer profile of the ring-shaped member 1 are conveniently processed. The pressing mechanism presses the top surface of the annular part 1 from the periphery of the base 2, so that the inner profile of the annular part 1 is not blocked, and the inner profile of the annular part 1 is convenient to process. After the top surface and the outer profile of the ring-shaped member 1 are processed, the top surface of the ring-shaped member 1 is compressed by a compressing mechanism, then the pushing of the pushing mechanism to the inner profile of the ring-shaped member 1 is removed, and then the inner profile of the ring-shaped member 1 is processed. The pressing mechanism seamlessly replaces the abutting mechanism to limit the ring-shaped piece 1, so that the ring-shaped piece 1 cannot be subjected to position change, the ring-shaped piece 1 is still coaxial with the main shaft when the inner profile of the ring-shaped piece 1 is machined, and the positioning reference for machining the inner profile of the ring-shaped piece 1 is kept consistent with the positioning reference for machining the top surface and the positioning reference for machining the outer profile. The clamp for machining the ring-shaped piece does not need repeated clamping and alignment, avoids datum conversion caused by twice clamping, improves the product quality and precision, reduces the labor intensity, shortens the machining time and improves the machining efficiency. In addition, two sets of clamps are reduced to one set of clamp, so that the cost is reduced.
As shown in fig. 8 and 9, in this embodiment, the abutting mechanism includes a slider 3 for sliding fit with the base 2, a limiting mechanism disposed on the base 2 and used for preventing the slider 3 from loosening when rotating along with the base 2, a positioning block 4 detachably mounted on the slider 3 and used for abutting against the inner profile of the ring member 1, and a first driving mechanism used for driving the slider 3 to move and then driving the positioning block 4 to move along the radial direction of the base 2 so as to abut against the inner profile of the ring member 1. The sliding block 3 can move along the radial direction of the base 2 under the driving of the first driving mechanism and the limiting effect of the limiting mechanism, and the positioning block 4 arranged on the sliding block 3 moves along the radial direction of the base 2 along with the sliding block 3, so that the positioning block 4 is abutted against the inner molded surface of the ring-shaped member 1. The locating block 4 is detachably mounted on the sliding block 3, when the pushing mechanism is required to be removed to push the inner molded surface of the ring-shaped member 1, the sliding block 3 is moved to separate the locating block 4 from the inner molded surface of the ring-shaped member 1, the locating block 4 is detached from the sliding block 3, and the inner molded surface of the ring-shaped member 1 can be processed.
As shown in fig. 8 and 9, in the present embodiment, the limiting mechanism includes a first cover plate 5 and a second cover plate 6 disposed on one side of the slider 3 away from the base 2, and the first cover plate 5 and the second cover plate 6 are disposed on two sides of the positioning block 4 at intervals. First apron 5 and the 6 intervals settings of second apron, first apron 5 keep away from base 2 one side from slider 3 and carry on spacingly to the one end that slider 3 is close to the axle center of base 2, and second apron 6 keeps away from base 2 one side from slider 3 and carries on spacingly to the other end that slider 3 is close to the axle center of base 2, guarantees that slider 3 can not take place the pine and take off when following base 2 rotation.
As shown in fig. 8 and 9, in the present embodiment, the first driving mechanism includes an inclined body 7 for engaging with the inclined surface of the sliding block 3, and a second driving mechanism for driving the inclined body 7 to move along the axial direction of the base 2, so as to push the sliding block 3 to move and drive the positioning block 4 to move to abut against the inner profile of the ring-shaped member 1. One end of the sliding block 3 close to the axis of the base 2 is provided with an inclined plane, the inclined body 7 is matched with the inclined plane of the sliding block 3, the inclined body 7 moves along the axial direction of the base 2 under the driving of the second driving mechanism, the inclined body 7 pushes the sliding block 3 to move, and the sliding block 3 moves to drive the positioning block 4 to move so as to abut against the inner profile of the ring-shaped piece 1.
As shown in fig. 8 and 9, in the embodiment, the second driving mechanism includes a mandrel 8 disposed on the base 2 and used for passing through the inclined body 7, a limiting member 10 sleeved on the mandrel 8 and located in the limiting groove 9 of the inclined body 7, and a first nut 11 threadedly sleeved on the mandrel 8 and used for abutting against the limiting member 10 through rotation so as to enable the limiting member 10 to abut against the inclined body 7 and push the inclined body 7 to move along the axial direction of the base 2. By rotating the first nut 11, the first nut 11 abuts against the limiting member 10, and the limiting member 10 abuts against the inclined body 7 and pushes the inclined body 7 to move along the axial direction of the base 2. By rotating the first nut 11 in the reverse direction, the first nut 11 is separated from the limiting member 10, and then moving the inclined body 7 in the axial direction, the slider 3 can be moved to separate the positioning block 4 from the inner profile of the ring-shaped member 1. Optionally, the first nut 11 and the limiting member 10 are integrally disposed, when the first nut 11 is rotated reversely, the limiting member 10 rotates along with the first nut 11, and the limiting member 10 abuts against the groove wall of the limiting groove 9 to drive the inclined body 7 to move axially. Optionally, the clamp further comprises a wrench 12 for rotating the first nut 11. Adopt spanner 12 to rotate first nut 11, can reduce the manpower, improve the simple operation nature.
As shown in fig. 8, in this embodiment, a resetting mechanism for resetting the sliding block 3 to drive the positioning block 4 to move and further removing the abutting of the abutting mechanism against the inner profile of the ring-shaped member 1 is disposed on the base 2. The resetting mechanism can reset the sliding block 3 and further drive the positioning block 4 to move, when the pushing mechanism is required to be removed and pushed against the inner molded surface of the ring-shaped member 1, the sliding block 3 does not need to be manually moved, manpower can be reduced, and the operation convenience is improved. Optionally, the resetting mechanism adopts a pushing mechanism which is arranged along the radial direction of the base 2 and used for pushing the sliding block 3 to reset.
As shown in fig. 8, in the present embodiment, the return mechanism includes a bolt 14 mounted on the base 2 and in the slide groove 13 of the slider 3, and a spring 15 disposed between the slider 3 and the bolt 14. The first driving mechanism drives the sliding block 3 to move so as to compress the spring 15, and when the first driving mechanism does not drive the sliding block 3 to move any more, the spring 15 automatically resets and pushes the sliding block 3 to move.
As shown in fig. 9, in the present embodiment, the pressing mechanism includes a pressing plate 16 for pressing the top surface of the ring 1, a screw 18 for passing through a screw hole 17 of the pressing plate 16 and being fixed to the base 2, and a second nut 19 for pressing the pressing plate 16 against the top surface of the ring 1 by screwing with a screw thread of the screw 18. The pressing plate 16 presses the top surface of the ring-shaped member 1, and the pressing plate 16 presses the top surface of the ring-shaped member 1 by screwing the second nut 19, and the second nut 19 cooperates with the thread on the screw 18 to press the pressing plate 16.
In the present embodiment, as shown in fig. 9, the screw holes 17 are waist-shaped holes for moving and adjusting the pressure plate 16 in the thickness direction of the ring 1 to accommodate different thicknesses of the ring 1. A certain moving space is reserved in the waist-shaped hole, so that the pressing plate 16 can move along the length direction of the waist-shaped hole, the coverage range of the pressing plate 16 is changed along with the movement, and the annular part 1 can adapt to various annular parts 1 with different thicknesses.
In specific implementation, a method for processing an arc-shaped part is provided, and 16 working procedures are involved.
Step 1-blank: forging the GH738 blank to obtain a ring piece 1, wherein the size of the ring piece 1 is phi 250x50, and carrying out solid solution aging treatment on the ring piece 1 to enable the Brinell hardness of the ring piece 1 to reach HB 336-389; step 2, roughly turning the annular part 1 to remove allowance; step 3, carrying out ultrasonic detection on the annular piece 1; step 4, semi-finish turning is carried out on the annular part 1; step 5, flat grinding the reference surface; step 6-turning a reference surface; step 7, carrying out finish turning on the annular part 1; step 8, milling positioning holes 108; step 9-laser processing the vent hole 101; step 10, cutting and cutting the annular part 1 by linear cutting to obtain an arc-shaped part; step 11, machining an axial sealing groove 109 at one end of the arc-shaped part by electric spark; step 12, machining an axial sealing groove 109 at the other end of the arc-shaped part by electric spark; step 13, machining a radial sealing groove 110 at one end of the arc-shaped part by linear cutting; step 14, machining a radial sealing groove 110 at the other end of the arc-shaped part by linear cutting; step 15, carrying out fluorescence detection on the arc-shaped piece; and step 16, finished inspection and warehousing.
The arc-shaped piece processing method has good effect in processing the arc-shaped piece, and summarizes a better process route for processing similar workpieces.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The processing method of the arc-shaped part is used for processing the arc-shaped part, a plurality of vent holes are formed in the wall surface of the arc-shaped part, and a sealing groove is formed in the end surface of the arc-shaped part, and is characterized by comprising the following steps:
a. obtaining an annular element (1) by forging;
b. roughing the ring-shaped element (1) to remove the allowance;
c. performing semi-finishing on the ring-shaped piece (1) to obtain a reference surface;
d. -finishing the annular element (1) according to the reference plane;
e. machining a vent hole (101) in the wall surface of the annular piece (1);
f. cutting the annular piece (1) to obtain an arc-shaped piece;
g. processing a sealing groove on the end face of the arc-shaped part;
and d, clamping the ring-shaped piece (1) by adopting a clamp to process the ring-shaped piece (1): the bottom surface of the ring-shaped piece (1) is supported on a base (2) of a clamp, and an abutting mechanism is used for abutting against the inner profile of the ring-shaped piece (1) so that the ring-shaped piece (1) and the base (2) are coaxial; machining the top surface and the outer profile of the annular piece (1); pressing the top surface of the ring-shaped piece (1) by using a pressing mechanism, and then removing the propping of the propping mechanism on the inner profile of the ring-shaped piece (1) so as to keep the positioning reference of the inner profile machining of the ring-shaped piece (1) consistent with the positioning reference of the top surface machining and the positioning reference of the outer profile machining; machining the inner profile of the ring-shaped element (1);
the abutting mechanism is used for abutting against the inner molded surface of the ring-shaped piece (1) to enable the ring-shaped piece (1) and the base (2) to be coaxial, and specifically: the multiple abutting mechanisms respectively move along the radial direction of the base (2), and abut against the inner profile of the ring-shaped piece (1) from different directions, so that the ring-shaped piece (1) and the base (2) are coaxial.
2. The arcuate member processing method according to claim 1,
the step b is also preceded by the step of carrying out solution ageing treatment on the annular piece (1).
3. The arcuate member processing method according to claim 1,
in the step c, semi-finishing is performed on the ring-shaped member (1) to obtain a reference surface, which specifically comprises: performing semi-finishing on the outer profile of the ring-shaped piece (1) to obtain a first step surface (102) and a second step surface (103); performing semi-finishing on the inner profile of the ring-shaped piece (1) to obtain a third step surface (104); and semi-finishing the bottom surface, the top surface, the inner molded surface, the outer molded surface and the first step surface (102) of the annular piece (1) into the reference surface.
4. The arcuate member processing method according to claim 3,
the step d of finishing the annular part (1) according to the reference surface is specifically as follows: finely machining a first step surface (102) of the annular member (1) according to a reference surface to obtain a first groove (105); finish machining the top surface of the annular member (1) according to a reference plane to obtain a second groove (106); and finishing the third step surface (104) of the annular member (1) according to the reference surface to obtain a third groove (107).
5. The arcuate member processing method according to claim 1,
the step e of machining the vent holes (101) in the wall surface of the annular piece (1) specifically comprises the following steps: marking the position of a positioning hole (108) on the ring wall of the ring-shaped piece (1), and machining the positioning hole (108) by adopting a numerical milling machine; and determining the position of the vent hole (101) by using the positioning hole (108), and processing the vent hole (101) by using laser.
6. The arcuate member processing method according to claim 5,
cutting the ring-shaped piece (1) in the step f to obtain an arc-shaped piece, wherein the arc-shaped piece is as follows: and determining the position to be cut by using the positioning hole (108), and cutting the ring-shaped member (1) by using wire cutting.
7. The arcuate member processing method according to claim 1,
the step g of processing the sealing groove on the end face of the arc-shaped part specifically comprises the following steps: firstly, an axial sealing groove (109) is machined by adopting electric spark machining, then a radial sealing groove (110) is machined by adopting linear cutting, and the radial sealing groove (110) and the axial sealing groove (109) are crossed to obtain the sealing groove.
8. The arcuate member processing method according to claim 1,
the step c is preceded by a step of ultrasonic testing of the ring-shaped element (1).
9. The arcuate member processing method according to claim 1,
and g, carrying out fluorescence detection and warehousing on the arc-shaped piece.
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| CN110695623A (en) * | 2019-10-18 | 2020-01-17 | 哈尔滨汽轮机厂有限责任公司 | Process for machining fan-shaped section |
| CN110834178B (en) * | 2019-10-28 | 2021-09-14 | 西安兴航航空科技股份有限公司 | Manufacturing method of Y-shaped connecting piece for spherical frame of airplane |
| CN111113707B (en) * | 2019-12-30 | 2022-07-01 | 中国航发湖南南方宇航工业有限公司 | Graphite coating thin-wall part clamp and machining method under clamping of clamp |
| CN112719804B (en) * | 2020-12-18 | 2022-06-07 | 湖北三江航天江北机械工程有限公司 | Processing method of air-to-air missile hanging combination for training |
| CN114770050B (en) * | 2022-05-16 | 2025-02-18 | 湖南星途航空航天器制造有限公司 | A welding processing method for thin-walled arc parts |
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