CN115318992A - Rapid forming equipment and method for aero-engine coil spring parts - Google Patents

Abstract

The invention discloses rapid forming equipment and a method for coil spring parts of an aero-engine, and the method comprises the following specific steps of 1), inserting one end of a plate into a clamping groove of a core rod, pre-rotating the core rod, and enabling the part of the plate connected with the core rod to deform and wind outside the core rod; step 2), adjusting the positions of the guide module in the left-right direction and the front-back direction to enable the guide module to approach the core rod, and enabling the arc-shaped forming surface on the guide module to abut against the deformed part of the plate; step 3), actively rotating the core rod to drive the plate to be bent, adjusting the position of the guide module in the left and right directions to enable the guide module to be far away from the core rod, and further enabling the plate to be wound on the core rod to form a coil spring; wherein, in the process of forming the coil spring, the coil spring is always abutted against the forming surface, and the coil spring slides along the arc-shaped forming surface on the guide module; and 4), after the coil spring is processed, stopping the core rod from rotating, and taking out the coil spring. Therefore, the coil spring is formed at one time, manual intervention is avoided, and the production efficiency and the yield of the coil spring are improved.

Description

Rapid forming equipment and method for aero-engine coil spring parts

Technical Field

The invention relates to the field of aero-engines, in particular to rapid forming equipment and method for a coil spring part of an aero-engine.

Background

The coil spring is used as a part used by mechanical power, continuously provides larger restoring force for each part in a narrow space of an aeroengine, and also adds balancing force for each part, each part needs to work in a complex environment of high temperature, high pressure and high rotating speed, and each part has harsh requirements on durability; due to the characteristics of complex specification, multiple varieties, small batch, special materials and the like of the coil spring, the part manufacturing process is complex, the manufacturing is difficult, and the parameters of each part can be finally determined only by manually correcting the coil spring by a bench worker after the coil spring is formed; meanwhile, due to the particularity of the material, the scrappage rate is high because the speed is unbalanced with the force applied by molding in the manufacturing process and breakage often occurs. The coil spring is very complex in design, and the minimum driving torque and the maximum available torque need to be determined; torque and rotational speed to drive the final actuator; and the total driving time is also needed and corrected. In the application of the aircraft engine, due to the fact that the batch size is small, the variety is large, mold replacement and test correction are required to be carried out repeatedly, relevant processing molds are required to be replaced together with the product specification when the product specification is replaced, and the workload of operators is greatly increased due to the fact that the relevant processing molds and equipment are corrected.

Patent document CN206702138U discloses an automatic forming machine for spiral spring, wherein the specific forming process of the spiral spring is as follows: 1) The high-frequency heating furnace is controlled by a pneumatic device to be fed to the front of the rotatable mandrel, the wire is fed to the position of the rotatable mandrel rightwards through the wire feeding wheel set, the high-frequency heating furnace heats the wire part of the formed volute spiral spring inner hook, and the high-frequency heating furnace returns to the original position after the set time is reached; 2) The lower cutter pushes the wire upwards to form an inner hook, the length of the inner hook is longer than the requirement, and the wire is continuously sent forwards, so that the redundant part of the inner hook can be cut off by the hydraulic scissors; 3) The wire returns to a set position, the lower cutter, the wire guide gauge and the wire feeding wheel group act together to form about 0.5 circle, and then the first curve gauge, the second curve gauge and the wire guide gauge complete the forming of the main body part of the volute spiral spring together; 4) The wire rod is extended out from the rotatable mandrel, the wire rod is clamped, the outer hook is formed in a rotating mode, the wire rod is cut off by the upper cutter after retreating to the designated position, and the formed volute spiral spring freely slides into the material receiving container.

In the prior art, the first curve gauge, the second curve gauge and the wire gauge are used for completing the molding of the main body part of the spiral spring together, but the prior art does limit the inner end and the outer end of the spiral spring in the process of coiling the spiral spring, so that materials with rebound coefficients rebound in the process of molding the spiral spring, the thread pitch of the spiral spring is not in compliance, and the later manual dry pre-repair is needed.

Disclosure of Invention

In order to solve the problems that in the prior art, the pitch of a coil spring is not controlled and needs to be manually repaired and repaired in the later period, the invention aims to provide equipment and a method for quickly forming parts of the coil spring of an aero-engine.

In order to achieve the purpose, the invention adopts the following technical scheme: a method for quickly forming coil spring parts of an aero-engine comprises the following specific steps: step 1) one end of a plate is inserted into a clamping groove of a core rod, and the core rod rotates in advance, so that the part of the plate, which is connected with the core rod, deforms and is wound outside the core rod;

step 2), adjusting the positions of the guide module in the left-right direction and the front-back direction to enable the guide module to approach the core rod, and enabling the arc-shaped forming surface on the guide module to abut against the deformed part of the plate;

step 3), actively rotating the core rod to drive the plate to be bent, adjusting the position of the guide module in the left and right directions to enable the guide module to be far away from the core rod, and further enabling the plate to be wound on the core rod to form a coil spring; wherein, in the process of forming the coil spring, the coil spring is always propped against the forming surface, and the coil spring slides along the arc-shaped forming surface on the guide module and deforms;

and 4), after the coil spring is processed, stopping the core rod from rotating, and taking out the coil spring.

Preferably, the angle of the arc-shaped molding surface on the guide module is between {30 degrees and 90 degrees }. Therefore, the positioning difficulty of the guide module is reduced, and the guide module is convenient to manufacture.

Preferably, the rotation angle of the core rod in step 1) is not less than 90 °. Therefore, in the step 2, the forming surface of the plate and the guide module has enough attaching area, and the forming stability of the coil spring is improved.

Preferably, the device further comprises a first roller group and a second roller group which are arranged oppositely, and after the feeding device pushes the plate to pass through the first roller group and the second roller group, one end of the plate is inserted into the clamping groove of the mandril. Therefore, the plate is flattened during bending, so that the forming process of the coil spring is more stable.

Preferably, at least one side surface of the guide module is in smooth transition with the forming surface. Therefore, the coil spring is prevented from being broken due to complete angle shock of the coil spring in the coil spring forming process.

Preferably, the guide module is mounted on a first mounting seat, the first mounting seat is mounted on a sliding block in a sliding manner along the front-back direction, the sliding block is mounted on a workbench in a sliding manner along the left-right direction, a second servo motor connected with the sliding block is further mounted on the workbench, and the second servo motor drives the sliding block to adjust the left-right direction position of the guide module and control the force applied to the outer part of the coil spring by the guide module. So, servo motor only needs control the ascending motion of guide module one side, reduces the control degree of difficulty in the spring forming process, guarantees the machining precision of spring.

Preferably, the mandrel is rotatably mounted on the table and is connected to a first servomotor mounted on the table. In this manner, the first servomotor can drive the mandrel in rotation and control the force exerted by the mandrel on the inner portion of the coil spring.

Preferably, the servo motor comprises a first servo motor installed on the workbench, a locking device connected with the first servo motor is rotatably installed on the workbench, the lower end of the mandrel is inserted into the locking device, and the mandrel is fixed by the locking device in a clasping manner. So, be convenient for the quick dismantlement of plug.

Preferably, the locking device comprises a locking disc which is rotatably installed on the workbench, the central position of the locking disc is downwards sunken to form an accommodating space, a plurality of pressing blocks and a plurality of pin shafts are arranged on the locking disc around the accommodating space, the pin shafts are positioned on the outer sides of the pressing blocks, one ends of the pressing blocks are rotatably connected with the locking disc, and the pin shafts are slidably connected with the locking disc; when the core rod is fixed, the lower end of the core rod is inserted into the accommodating space, the pin shaft slides and pushes the pressing blocks, the other ends of the pressing blocks swing towards the accommodating space, the core rod is held tightly by the pressing blocks, and the core rod and the locking disc are automatically centered. So, its installation clearance is eliminated to the mode that the drive compact heap was taken to the plug and is held tightly to change the plug that can be quick, and accomplish the centering of plug, improve device's suitability and application scope.

An aero engine coil spring part rapid prototyping apparatus employing a coil spring rapid prototyping method as claimed in any one of said claims 1 to 9.

The technical scheme of the invention has the beneficial effects that: in the production process of the coil spring, the inner hook part of the coil spring is formed at the clamping position of the core rod, the core rod actively rotates to pull the plate for forming the coil spring to move and gradually wind the plate on the core rod, so that the inner side part of the coil spring is stressed, in the process of forming the plate into the coil spring, the plate is abutted against the arc-shaped forming surface of the guide module, the plate can gradually deform along the sliding of the arc-shaped forming surface of the guide module, the plate is stressed by a force opposite to the movement direction of the plate in the process, so that the inner side part of the coil spring can be gradually tightened and tightly hooped on the core rod in the forming process of the coil spring, the control precision of the pitch of the coil spring is further improved, the coil spring is formed at one step, the yield and the forming stability of parts are improved, the manual intervention rate is reduced, and the production efficiency is improved.

And can adjust in real time the power that the force that the plug was exerted on panel and the power that the guide module was exerted on panel in the production process of wind spring to avoided leading to the part shaping to appear splitting because of the required effect of the single matching of speed shaping, promoted aeroengine wind spring part shaping precision, shaping efficiency, the fashioned yields in shaping manufacturing, reduced artifical later stage's intervention frequency.

Drawings

FIG. 1 is a schematic structural diagram of rapid forming equipment for a coil spring part of an aero-engine (before coil spring forming);

FIG. 2 is an enlarged view of FIG. 1 at A;

FIG. 3 is a schematic structural diagram of rapid prototyping equipment for aero-engine coil spring parts (after coil spring forming);

FIG. 4 is an enlarged view of FIG. 3 at B;

FIG. 5 is a schematic view of a pitch shaper;

FIG. 6 is a schematic view of another angle configuration of the pitch shaper;

FIG. 7 is a schematic structural diagram of a slider, a first mounting seat, a guide module and a first roller set;

FIG. 8 is a schematic view of the locking device;

FIG. 9 is a schematic structural view of the locking device with the mandrel, adjustment seat and gland removed;

FIG. 10 is a schematic view of the locking plate;

FIG. 11 is a schematic view of another angle of the locking plate;

FIG. 12 is a schematic view of the structure of the mandrel;

FIG. 13 is a schematic structural view of a compact;

FIG. 14 is a schematic structural view of the adjustment seat;

fig. 15 is a schematic structural diagram of a guide module.

Reference numerals are as follows: 1. a work table; 2. a locking device; 21. an adjusting seat; 211. a cavity; 212. a second opening; 22. a worm; 221. An end cap; 23. a worm gear; 24. a locking disc; 241. an accommodating space; 242. an avoidance groove; 243. a limiting hole; 244. a connecting portion; 245. an installation part; 25. a pin shaft; 26. a compression block; 261. a connecting end; 262. a compression end; 27. a gland; 271. a peephole; 28. a first hand wheel; 3. a pitch shaping device; 31. mounting a plate; 311. a sliding track; 32. a second servo motor; 321. a first lead screw; 33. a slider; 331. a threaded hole; 332. a first sliding block; 333. a sliding groove; 334. a drive slot; 335. a second screw rod; 336. a second hand wheel; 34. a first mounting seat; 341. a drive plate; 342. a support plate; 343. a limiting plate; 35. a first roller train; 36. a guide module; 361. a forming end; 3611. molding surface; 37. a second mounting seat; 38. A second roller set; 4. a controller; 5. a core rod; 51. a clamping groove; 52. a winding end; 53. a limiting end; 54. a fixed end; 6. A plate material; 7. a coil spring.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative and intended to explain the present invention and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation that the first and second features are not in direct contact, but are in contact via another feature between them. Also, the first feature "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature.

In the following embodiments, the orientation shown in fig. 1 is taken as a reference, and in fig. 1, the position of the mandrel is taken as "left", the side of the servo motor is taken as "right", and the position of the first roller group is taken as "front".

In the embodiment of the method, the first step of the method,

a method for quickly forming a coil spring part of an aero-engine comprises the following steps: as shown in fig. 1-4, the specific steps are as follows:

step 1), inserting one end of a plate 6 into a clamping groove 51 of a core rod 5, and pre-rotating the core rod 5 to deform the part of the plate 6 connected with the core rod 5 and wind the part outside the core rod 5; wherein, the rotation angle of the core rod 5 in the step 1 is not less than 90 degrees;

step 2), adjusting the left-right direction and front-back direction positions of the guide module 36 to enable the guide module 36 to approach the core rod 5, so that the arc-shaped forming surface 3611 on the guide module 36 is abutted against the deformation part of the plate 6;

step 3), actively rotating the core rod 5 to drive the plate 6 to bend, adjusting the left and right positions of the guide module 36 to enable the guide module 36 to be far away from the core rod 5, and further enabling the plate 6 to be wound on the core rod 5 to form a coil spring 7; during the process of forming the coil spring, the coil spring 7 is always abutted against the forming surface 3611, and the coil spring slides along the arc-shaped forming surface 3611 on the guide module 36; wherein, the coil spring 7 is subjected to two opposite acting forces respectively from the core rod 5 and the guide module 36, so that the inner part of the coil spring 7 is gradually tightened until the outer wall of the core rod 5 is tightly held;

and 4), after part of the plate is processed into the coil spring 7, stopping the rotation of the core rod 5, cutting and separating the plate 6 and the coil spring 7, and taking out the coil spring 7.

According to the arrangement, in the production process of the coil spring, the inner hook part of the coil spring is formed at the clamping position of the core rod, the core rod actively rotates to pull the plate for forming the coil spring to move and gradually winds on the core rod to enable the inner side part of the coil spring to be stressed, in the process of forming the plate into the coil spring, the plate is abutted to the arc-shaped forming surface of the guide module, the arc-shaped forming surface of the guide module can be gradually deformed along sliding, the plate is stressed by a force opposite to the movement direction of the plate in the process, the inner side part of the coil spring can be gradually tightened and hooped on the core rod in the forming process of the coil spring, the control precision of the pitch of the coil spring is improved, the coil spring is formed in one step, the yield and the forming stability of parts are improved, the manual intervention rate is reduced, and the production efficiency is improved.

In other embodiments, the sheet material used for forming the coil spring can be fixed in length, and the sheet material is pushed in a manual feeding mode to be processed and formed into the coil spring. Therefore, the mechanism for cutting and feeding can be omitted, and the coil spring can be directly taken out after being formed.

The rapid forming equipment for the coil spring part of the aero-engine applying the method comprises a workbench 1, and the mandrel 5, the first roller set 35, the second roller set 38, the guide module 36, the first servo motor, the second servo motor 32 and the controller 4 which are arranged on the workbench 1; the first servo motor is connected with a locking device which is rotatably arranged on the workbench, and the locking device fixes the lower end of a core rod inserted into the locking device in a holding manner; the first roller group and the second roller group are oppositely arranged and used for flattening the plate, the first roller group is positioned at the rear side of the second roller group, and the plate passes through the space between the first roller group and the second roller group and then is inserted into the clamp of the mandril; the second servo motor can control the guide module to move; first servo motor and second servo motor all are connected with the controller electricity to the first servo motor of the accurate control of the specification and the second servo motor of controller ability according to the rebound coefficient of different materials and material, constantly revise the plug and lead the module and exert the power on panel through first servo motor and second servo motor in the spring coiling forming process, make the accurate winding of panel on the plug, improve the control accuracy of spring coiling pitch, avoid making panel damaged because the too big messenger's of application of force.

In order to facilitate the integral installation of the equipment, as shown in fig. 1 and 3, the rapid forming equipment for coil spring parts of an aircraft engine further comprises a pitch shaping device 3, and the pitch shaping device 3 comprises the first roller set 35, the second roller set 38, the second servo motor 32 and the guide module 36. The pitch shaping device 3 further comprises a mounting plate 31, the first roller set 35, the second servo motor 32 and the guide module 36 are all mounted on the mounting plate 31, the mounting plate 31 is fixed on the workbench 1, a plurality of rollers in the second roller set 38 are rotatably mounted on a second mounting seat 37, the second mounting seat 37 is fixed on the workbench 1, and the second mounting seat 37 is located in front of the mounting plate 31. Therefore, each part in the equipment can be assembled and then installed on the workbench, so that the equipment is convenient to manufacture and mold, the cost of the equipment is reduced, and later maintenance and maintenance are convenient.

As shown in fig. 5 to 7, in this embodiment, the pitch shaping device 3 further includes two sliding tracks 311 extending in the left-right direction, the two sliding tracks 311 are both fixed on the mounting plate 31, the two sliding tracks 311 are arranged in the front-back direction, and a first sliding block 332 is slidably mounted on each of the two sliding tracks 311, both the two sliding blocks 332 are fixed on the bottom of the slider 33, the second servo motor 32 is mounted on the mounting plate 31, the second servo motor 32 is located on the right side of the sliding track 311, a first screw rod 321 is mounted at an output end of the second servo motor 32, the first screw rod 321 is in threaded connection with a threaded hole 331 formed in the slider 33, so that the second servo motor 32 is started to drive the screw rod to rotate, and the moving distance of the slider can be accurately controlled; the top of the sliding block 33 is provided with two sliding grooves 333 extending in the front-back direction, the two sliding grooves 333 are arranged in the left and right direction, the two sliding grooves 333 are respectively provided with a second sliding block in a sliding manner, the two second sliding blocks are respectively fixedly connected with the bottom of the first mounting seat 34, the top of the sliding block 33 is provided with a driving groove 334, the driving groove 334 is positioned between the two sliding grooves 333, the rear side of the first mounting seat 34 is fixedly provided with a driving plate 341, the bottom of the driving plate 341 downwards extends into the driving groove 334, the sliding block 33 is rotatably provided with a second lead screw 335, the second lead screw 335 penetrates through the driving groove 334, the second lead screw 335 penetrates through the driving plate 341 in the front-back direction and is in threaded connection with the driving plate 341, the rear end of the second lead screw 335 is provided with a second hand wheel 336 for driving the second lead screw 335 to rotate, the guide module 36 is detachably provided with the left end of the first mounting seat 34, the rollers in the first roller group 35 are respectively rotatably provided at the front end of the first mounting seat 34 through roller shafts, and the first roller group is positioned at the right side of the guide module 36; in the step 2), the guide module 36 is close to the mandrel 5 by rotating the first screw rod 321 and the second screw rod 335, so that the first roller set 35 and the second roller set 38 clamp the plate 6; in the step 3), the second servo motor 32 drives the sliding block 33 to move right by rotating the first lead screw 321, and the sliding block 33 drives the first roller group 35 and the guide module 36 to move through the first mounting seat 34, so as to control the pitch of the coil spring 7. So can accurate control guide module's removal through the lead screw to can follow guide module one and move by first roller train, make the clearance between first roller train and the second roller train adjustable on the one hand, the panel shaping of the different specifications of being convenient for, on the other hand can simplify pitch shaping device's structure. Furthermore, a second servo motor is connected with the first screw rod through a speed reducer. Thus, the control precision of the second servo motor is improved.

In other embodiments, the second servo motor 32 can be connected with and drive the sliding block 33 to move through a meshed gear rack, so as to complete the forming of the large-size coil spring; the second screw rod can be driven by a motor only, so that the automation degree of the equipment is improved.

As shown in fig. 2, 4 and 5, in order to improve the yield of coil springs, it is necessary to prevent longitudinal runout during the forming process of the sheet material, in this embodiment, a roller on the left side in the first roller group 35 has a flange, a limiting plate 343 is fixedly mounted at the front end of the first mounting seat 34, and the limiting plate 343 is located below the roller flange; in the step 2), the sheet material 6 is positioned between the limiting plate 343 and the flanges of the rollers of the first roller group 35, so that the sheet material 6 is limited from moving longitudinally; in the step 3), the first roller set 35 and the second roller set 38 clamp the sheet 6 all the time, and the position of the guide module 36 in the front-back direction is unchanged. Therefore, unqualified coil springs after forming due to radial runout of the plates are prevented, and manual correction is needed. Further preferably, the rollers of the first roller set, each having a flange, are capable of sliding along the roller shaft in the up-down direction. Thus, the specification of the coil spring which can be produced by the device is expanded, and the applicability of the equipment is provided.

In other embodiments, the rollers in the first roller set each have a flange, and the rollers in the first roller set each slide along a roller shaft.

To provide the adaptability of the apparatus, as shown in figures 2, 4, 5 and 6, in this embodiment the guide modules 36 are removably mounted on the first mounting block 34, which enables the replacement of different guide modules with more different required coil springs. Further preferably, the supporting plate 342 is fixedly mounted at the left end of the first mounting seat 34 by a fastener, the bottom of the front end of the supporting plate 342 is provided with a limit opening 3421, the rear end of the guide module 36 is matched with the limit opening 3421 of the supporting plate 342, and the guide module 36 is fixed on the supporting plate 342 by the fastener. Thus, the mounting efficiency of the guide module and the accuracy of the mounting position are improved.

As shown in fig. 2, 4 and 15, in order to ensure the pitch of the coil spring, in this embodiment, the end of the guide module 36, which abuts against the plate 6, is a forming end 361, the left side portion of the forming end 361 is a concave arc-shaped forming surface 3611, the angle of the forming surface 3611 is between {30 ° to 90 ° }, after the coil spring is completely formed, the forming surface 3611 of the guide module 36 can completely abut against the external tooth portion of the coil spring, and the forming surface 3611 is in smooth transition with the right side portion of the forming end 361; therefore, the damage caused by the overlarge bending angle of the plate is avoided, and the pitch precision of the coil spring is improved, and meanwhile, the forming process of the coil spring is smooth.

In the forming and winding process of the coil spring, the inner side part of the coil spring needs to be fixed stably and reliably to ensure that the relative pitch is not influenced in processing, a die core rod for fixing usually adopts clearance fit, and the installation and the fit of the core rod are influenced more or less due to the self stress of materials and the traction force generated on the core rod by the driving of a motor in the forming process, so that the forming pitch of a product is changed, and the output quality of a finished product in the later period is influenced. As shown in fig. 8, 9 and 10, in this embodiment, the locking device 2 includes a locking disk 24, a plurality of pins 25 and a plurality of pressing blocks 26, the locking disk 24 is horizontally and rotatably mounted on the workbench 1, the locking disk 24 is connected to a first servo motor mounted on the workbench 4, the plurality of pressing blocks 26 and the plurality of pins 25 are arranged around a rotation center of the locking disk 24, the plurality of pressing blocks 26 correspond to the plurality of pins 25 one to one, an inside of the plurality of pressing blocks 26 is an accommodating space 341 for inserting the core rod 5, one end of the pressing block 26 is rotatably connected to the locking disk 24, and the pins 25 are slidably connected to the locking disk 24 and can drive the pressing blocks 26 to rotate; when the core rod is fixed, the pin shaft slides, the pressing blocks are pushed, the other ends of the pressing blocks swing towards the accommodating space, the core rod is held tightly by the pressing blocks, gaps between the locking device and the core rod are eliminated, and the locking device and the core rod are centered and fixed. Furthermore, the first servo motor is connected with the locking device through a speed reducer. Therefore, the control precision of the first servo motor is improved.

In the preferred embodiment, as shown in fig. 9 and 13, one end of the pressing block 26 connected to the locking disk 24 is a connecting end 261, the other end of the pressing block 26 is a pressing end 262, the thickness of the pressing block 26 gradually increases from the connecting end 261 to the pressing end 262, the pin 25 slides around the rotation center of the locking disk 24, and the pin 25 is located outside the connecting end 261 on the pressing block 26 and abuts against the pressing block 26. Therefore, the movement tracks of the pin shaft and the pressing block are simplified, and positioning, manufacturing and installation of each part are facilitated.

In other embodiments, the movement locus of the pin shaft is different from that in the embodiment, in other embodiments, the pin shaft slides in the accommodating space in the axial direction, so that the pressing block is pushed, the pressing block rotates around the joint of the pressing block and the locking disc, the pressing end of the pressing block swings towards the accommodating space, and the core rod is held tightly.

As shown in fig. 8-13, in the present embodiment, preferably, the locking disk 24 is fixed on the adjusting seat 21, the adjusting seat 21 is rotatably installed on the workbench 1 and connected to the first servo motor, the connecting portion 244 protrudes from the bottom of the locking disk 24, the connecting portion 244 horizontally and rotatably installs the worm wheel 23 at the bottom of the locking disk 24 through a bearing, the worm wheel 23 is in meshing transmission with the worm 22 rotatably installed on the adjusting seat 21, the locking disk 24 is provided with a plurality of limiting holes 243 around the rotation center of the locking disk 24, the plurality of limiting holes 243 are in one-to-one correspondence with the plurality of pin shafts 25, the pin shafts 25 pass through the limiting holes 243, the pin shafts 25 are in sliding fit with the limiting holes 243, and the bottom of the pin shafts 25 is fixedly connected to the worm wheel 23. So, worm gear has the effect of auto-lock, can lock the dabber tightly and lock. Further, a first handle 28 is mounted to one end of the worm 22. In other embodiments, the worm may be driven by a motor.

In this embodiment, as shown in fig. 8 to 13, the central position of the locking disc 24 is recessed downward to form an accommodating space 241, a plurality of avoiding grooves 242 arranged around the accommodating space 241 are arranged on the top of the locking disc 24, the plurality of avoiding grooves 242 are all communicated with the accommodating space 241, the plurality of avoiding grooves 242 correspond to the plurality of limiting holes 243 one by one, the upper end of the pin shaft 25 passes through the limiting holes 243 and is inserted into the avoiding grooves 32, the part of the locking disc 24 located between the limiting holes 243 and the accommodating space 241 is a limiting part, the connecting end 261 of the pressing block 26 is rotatably connected with the top end of the limiting part of the locking disc 24, an annular mounting part is protruded on the top of the locking disc 24, the mounting plate 245 is pressed on the adjusting seat and can be fixedly connected through a fastener, a gland 27 is fixed on the top of the mounting part 245, the gland 27 is located above the avoiding grooves 242, the plurality of pressing plates 26 and the plurality of pin shafts 25, and a through hole is formed in the gland 27, which the lower end of the core rod 5 can be inserted into the accommodating space 241. So set up, all install round pin axle and compact heap in the locking dish through the gland, make plug locking device's outward appearance more succinct, make round pin axle and compact heap have stable operational environment, improve the life of device, keep device's locking effect.

In this embodiment, as shown in fig. 8, the pressing cover 27 is further provided with a peephole 271 corresponding to the plurality of limiting holes 243, and the pin extends upward into the peephole 271. So set up, the shift position of observing round pin axle that can be clear avoids transition to adjust the damage that causes the device. Further, the limiting hole 243 and the peep hole 271 are both waist-shaped holes. Therefore, the moving track of the pin shaft can be limited, the acting force of the pin shaft is given from the side surface, and the situation that the pin shaft is separated from the worm due to overlarge stress of the pin shaft is avoided.

In this embodiment, as shown in fig. 14, the inner side of the adjusting seat 21 has a cavity 211, the top of the adjusting seat 21 has a first opening communicated with the cavity 211, the side of the adjusting seat 21 is provided with a second opening 212 communicated with the cavity 211, as shown in fig. 8 and 9, one end of the worm 22 is inserted into the adjusting seat 21 through the second opening and is rotatably connected with the adjusting seat 21 through the end cover, the locking disk 24 has a limiting protrusion, the bottom of the locking disk 24 is inserted into the cavity 211 of the adjusting seat 21 through the first opening, the worm wheel 23 rotatably mounted at the bottom of the locking disk 24 is engaged with the worm 22 rotatably mounted on the adjusting seat 21, and the limiting protrusion of the locking disk is pressed on the adjusting seat 21. By the arrangement, a relatively closed environment is provided for the movement of the core rod locking device, and the service life and the precision of the device are improved.

In this embodiment, as shown in fig. 9 and 13, the pressing block is arc-shaped, and the thickness of at least one half section of the pressing block is greater than the thickness of the wall of the positioning portion on the locking disk 24. By the arrangement, the applicability and the holding stability of the mandrel locking device are improved.

In this embodiment, round pin axle 25 is the magnetism round pin, and the material of compact heap 26 is the metal, and the lateral surface of compact heap 26 adsorbs on round pin axle 25, and round pin axle 25 removes and can slide and drive the swing of compact heap 26 at the lateral surface of compact heap 26. So set up, compact heap and round pin axle adsorb each other for the compact heap is laminated with the round pin axle all the time, and makes the compact heap follow the round pin axle and remove, promotes the change efficiency of plug. In other embodiments, a return spring is arranged between the pressing block and the locking disk, so that the pressing block automatically returns.

In this embodiment, as shown in fig. 8 to 12, the upper end of the core rod 5 is a winding end 52, the lower end of the core rod 5 is a fixed end 54, the middle position of the core rod 5 protrudes outward to form a limiting end 53, the clamping groove 51 is disposed on the side surface of the winding end 52, the fixed end 54 is inserted into the accommodating space 241 and is held and fixed by the pressing block 26, and the limiting end 53 is pressed on the pressing cover 27 to limit the depth of the core rod 5 inserted into the locking device 2.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made in the above embodiments by those of ordinary skill in the art without departing from the principle and spirit of the present invention.

Claims (10)

1. A method for quickly forming a coil spring part of an aero-engine is characterized by comprising the following steps: the method comprises the following specific steps:

step 1), inserting one end of a plate (6) into a clamping groove (51) of a core rod (5), pre-rotating the core rod (5), and enabling the part, connected with the core rod (5), of the plate (6) to deform and wind outside the core rod (5);

step 2), adjusting the positions of the guide module (36) in the left-right direction and the front-back direction to enable the guide module (36) to approach the core rod (5), and enabling the arc-shaped forming surface (3611) on the guide module (36) to be abutted against the deformation part of the plate (6);

step 3), actively rotating the core rod (5) to drive the plate (6) to bend, adjusting the position of the guide module (36) in the left and right directions, and enabling the guide module (36) to be far away from the core rod (5), so that the plate (6) is wound on the core rod (5) to form a coil spring (7); wherein, in the process of forming the coil spring, the coil spring (7) is always abutted against the forming surface (3611), and the coil spring slides along the arc-shaped forming surface (3611) on the guide module (36);

and 4), after the coil spring (7) is machined, stopping the core rod (5) from rotating, and taking out the coil spring (7).

2. The rapid forming method of a coil spring part of an aircraft engine according to claim 1, characterized in that: the angle of the molding surface (3611) on the guide module (36) is between {30 degrees and 90 degrees }.

3. The rapid forming method of a coil spring part of an aircraft engine according to claim 1, characterized in that: the pre-rotation angle of the core rod (5) in the step 1) is not more than 360 degrees.

4. The rapid forming method of a coil spring part of an aircraft engine according to claim 1, characterized in that: the plate inserting device is characterized by further comprising a first roller group (35) and a second roller group (38) which are arranged oppositely, the feeding device pushes the plate (6) to penetrate through the first roller group (35) and the second roller group (38), and then one end of the plate (6) is inserted into the clamping groove (51) of the core rod (5).

5. The rapid forming method of a coil spring part of an aircraft engine according to claim 1, characterized in that: at least one side surface of the guide module (36) is in smooth transition with the molding surface (3611).

6. The rapid forming method for coil spring parts of aero-engines according to claim 1, characterized in that: the guide module (36) is installed on the first installation seat (34), the first installation seat (34) is installed on the sliding block (33) in a sliding mode along the front-back direction, the sliding block (33) is installed on the workbench (1) in a sliding mode along the left-right direction, the workbench is further provided with a second servo motor (32) connected with the sliding block (33), and the second servo motor (32) drives the sliding block (33) to adjust the position of the guide module (36) in the left-right direction and control the force applied to the outer side portion of the coil spring (7) by the guide module (36).

7. The rapid forming method for coil spring parts of aero-engines according to claim 1, characterized in that: the mandrel is rotatably arranged on the workbench and is connected with a first servo motor arranged on the workbench.

8. The rapid forming method of a coil spring part of an aircraft engine according to claim 7, characterized in that: the servo motor comprises a first servo motor arranged on a workbench (1), a locking device (2) connected with the first servo motor is rotatably arranged on the workbench (1), the lower end of the mandrel (5) is inserted into the locking device (2), and the mandrel (5) is fixed by the locking device (2) in a holding manner.

9. The rapid forming method of a coil spring part of an aircraft engine according to claim 8, characterized in that: the locking device (2) comprises a locking disc (24) rotatably mounted on the workbench (1), an accommodating space (241) is formed in the center of the locking disc (24), a plurality of pressing blocks (26) and a plurality of pin shafts (25) are arranged on the locking disc (24) around the accommodating space (241), the pin shafts (25) are located on the outer sides of the pressing blocks (26), one ends of the pressing blocks (26) are rotatably connected with the locking disc (24), and the pin shafts (25) are slidably connected with the locking disc (24); when the core rod (5) is fixed, the lower end of the core rod (5) is inserted into the accommodating space (241), the pin shaft (25) slides and pushes the pressing block (26), the other end of the pressing block (26) swings towards the accommodating space (241), the core rod (5) is further clasped by the pressing blocks (26), and the core rod (5) and the locking disc (24) are automatically centered.

10. An aero engine coil spring part rapid prototyping apparatus employing a coil spring rapid prototyping method as claimed in any one of said claims 1 to 9.

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