Aero-engine coil spring part rapid forming equipment and pitch automatic shaping device thereof

Abstract

The application discloses an aero-engine coil spring part rapid forming equipment and a pitch automatic shaping device thereof, which comprises a workbench, a sliding block installed on the workbench and capable of sliding in the left-right direction, a first mounting seat installed on the sliding block and capable of sliding in the front-rear direction, and a guide mold installed on the first mounting seat, wherein an arc-shaped forming surface is recessed on the guide mold, the unfolding angle of the forming surface is not less than 30 DEG and not more than 90 DEG, and the plate material can abut against and slide along the forming surface to gradually deform after being stressed and bent, and a servo motor for driving the guide mold is further installed on the workbench. In this way, in the forming process of the coil spring, the guide mold has the functions of guiding and making the inner ring of the coil spring tight, and the servo motor continuously corrects the force applied on the plate material by the guide mold, so that the part is precisely wound, the artificial post-intervention rate is reduced, and the production efficiency and the automation degree of the coil spring production are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of aero-engine, in particular to a rapid forming equipment for aero-engine coil spring parts and a pitch automatic shaping device thereof. BACKGROUND

[0002] As a mechanical power used part, the coil spring continuously provides a large restoring force for each part in the narrow space of the aero-engine, and each part has a strict requirement for durability, resulting in the part being special and difficult to manufacture, and the parameters of each part need to be finally determined through manual correction by a bench worker after forming and testing.

[0003] The patent document with publication number CN101456053B discloses a servo control pitch forming mechanism of an automatic coil spring machine. A height cam is connected to the output shaft of the servo motor through a key, the height cam rotates the same angle around the output shaft of the servo motor, the lift of the cam is the same, the bottom end of the connecting seat is installed on a linear guide rail through threaded connection, and the other end is locked on the guide rod through a locking screw; a pin hole is arranged on the connecting seat, a pin shaft is installed in the pin hole, a driven bearing is installed on the pin shaft, and the guide rod is installed on the linear bearing of the front and rear wall plates; a compression spring is arranged at the rear part of the guide rod, and the driven bearing is always attached to the cam surface of the height cam due to the joint action of the compression spring and the height cam. The servo motor drives the height cam to rotate and push the driven bearing, because the driven bearing is installed on the connecting seat, and the connecting seat is installed on the linear guide rail, so the connecting seat makes a reciprocating motion on the linear guide rail, because the other end of the connecting seat is clamped on the guide rod through the clamping screw, so the guide rod also makes a reciprocating motion in the linear bearing along with the movement of the driven bearing, and the pitch push rod installed on the guide rod can also make a reciprocating motion.

[0004] Because the coil spring part used in the aero-engine is difficult to accurately control the rebound coefficient by manual due to the particularity of the material, the force applied to the workpiece during the forming process is too large, which can easily cause the material to break, resulting in the scrap of the product; if the force is too small, the pitch of the coil spring increases, which cannot meet the use requirements in the later stage, and manual intervention is required to put the part into a special mold for correction. This process is still used in some occasions, and the process mainly relies on the experience of the person, and has the characteristics of high scrap rate and unstable output of processed products. In the process of forming the plate into a coil spring, the existing technology cannot control the force applied to the plate, resulting in the difficulty in controlling the pitch of the coil spring, and manual intervention is required to correct the coil spring in the later stage. SUMMARY

[0005] In order to solve the problem that the pitch is difficult to control in the forming process of the coil spring in the prior art, the present application aims to provide an aero-engine coil spring part rapid forming equipment and a pitch automatic shaping device thereof, wherein the plate material is rubbed with the sliding guide module after being bent, a reverse power is given to the plate material, and the relative speed of the guide module and the plate material is controlled by a servo motor, so as to accurately control the stress of the plate material and the pitch.

[0006] In order to achieve the above-mentioned purpose, the present application adopts the following technical scheme: a coil spring pitch automatic shaping device, comprising a workbench, a sliding block installed on the workbench and capable of sliding in the left-right direction, a first mounting seat installed on the sliding block and capable of sliding in the front-rear direction, and a guide module installed on the first mounting seat, wherein an arc-shaped forming surface is arranged on the guide module, the plate material can abut against and slide along the forming surface after being bent, and a servo motor for driving the guide module is further installed on the workbench. In this way, the guide module has the functions of guiding and tightening the inner ring of the coil spring during the forming process of the coil spring, and the force exerted on the plate material by the guide module is continuously corrected by the servo motor, so that the part is accurately wound, the secondary shaping by manual work in the later stage is avoided, the yield rate of the part and the stability of the forming are improved, the rate of manual intervention in the later stage is reduced, and the production efficiency and the automation degree of the coil spring production are improved.

[0007] Preferably, at least one side surface of the guide module is circularly connected with the forming surface. In this way, the bending angle of the plate material is prevented from being too large, and stress fracture is avoided.

[0008] Preferably, the angle of the forming surface is between {90°-30°}.

[0009] Preferably, the device further comprises a first roller set and a second roller set for flattening the plate material, which are oppositely arranged on the workbench. In this way, the plate material is flattened between the bending processes, so that the forming process of the coil spring is more stable.

[0010] Preferably, the first roller set is installed on the first mounting seat and moves with the guide module. In this way, the adaptability of the device is improved to adapt to plate materials of different specifications.

[0011] Preferably, the servo motor is connected with the sliding block, and a hand wheel for driving the first mounting seat is installed on the sliding block. In this way, the servo motor only controls the left-right movement of the guide module, the control difficulty of the device on the pitch of the coil spring is reduced, and the complexity of the device is reduced.

[0012] Preferably, a first lead screw connected with the servo motor is threadedly connected with the sliding block, a second lead screw is threadedly connected with the first mounting seat, the second lead screw is rotationally connected with the sliding block, and the second lead screw is connected with the hand wheel.

[0013] As preferred, the mounting plate fixed on the workbench is also included, and the servo motor and the sliding block are both mounted on the mounting plate. In this way, the assembly of the device is facilitated.

[0014] As preferred, the mounting plate and the sliding block are connected through two groups of sliding rails extending in the left-right direction and arranged in the front-back direction and sliding blocks; and the sliding block and the first mounting seat are connected through two groups of sliding grooves extending in the front-back direction and arranged in the left-right direction and sliding blocks. In this way, the sliding block and the first mounting seat are both mounted in the double sliding way, so that the movement of the sliding block and the mounting seat is more stable, and the influence of the guide module shaking on the yield of the wound spring is avoided.

[0015] An aero-engine wound spring part rapid forming equipment, comprising the wound spring pitch automatic shaping device.

[0016] The technical scheme of the present application has the beneficial effects that: in the forming process of the wound spring, the guide module has the functions of guiding and tightening the inner ring of the wound spring, and the force exerted on the plate by the servo motor is continuously corrected, so that the part is precisely wound, the secondary shaping by manual work in the later stage is avoided, the yield and the stability of the forming of the part are improved, the manual intervention rate in the later stage is reduced, and the production efficiency and the automation degree of the wound spring production are improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 Fig. 1 is a structural schematic diagram of the aero-engine wound spring part rapid forming equipment in the present application;

[0018] Figure 2 Fig. 2 is a structural schematic diagram of the wound spring pitch automatic shaping device in the present application; Figure 1 Fig. 3 is an enlarged view of position A in Fig. 2;

[0019] Figure 3 Fig. 4 is a structural schematic diagram of the wound spring pitch automatic shaping device in the present application;

[0020] Figure 4 Fig. 5 is a connection structural schematic diagram of the sliding block, the first mounting seat, the first roller group and the guide module in the present application;

[0021] Figure 5 Fig. 6 is a structural schematic diagram of the guide module in the present application.

[0022] Fig. 1 is a structural schematic diagram of the aero-engine wound spring part rapid forming equipment in the present application; 10, workbench; 301, mounting plate; 3011, sliding track; 302, servo motor; 3021, first screw rod; 303, sliding block; 3031, threaded hole; 3032, first sliding block; 3033, sliding groove; 3034, driving groove; 3035, second screw rod; 3036, hand wheel; 304, first mounting seat; 3041, driving plate; 3042, support plate; 30421, limiting port; 3043, limiting plate; 305, first roller group; 306, guide module; 3061, forming end; 30611, forming surface; 307, second mounting seat; 308, second roller group; 50, core rod; 70, wound spring. Detailed Implementation

[0023] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0024] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and 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. Therefore, they should not be construed as limitations on this invention.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more, unless explicitly defined otherwise.

[0026] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0027] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0028] The following embodiments are described with reference to Figure 1 the orientation Figure 1 of the workbench is horizontal, the side where the mandrel is located is 'left', the side where the servo motor is located is 'right', and the side where the second roller group is located is 'front'.

[0029] Embodiments

[0030] As shown in Figure 1 and Figure 2 , a pitch automatic shaping device includes a workbench 10, a sliding block 303 mounted on the workbench 10 and capable of sliding in the left-right direction, a first mounting seat 304 mounted on the sliding block 303 and capable of sliding in the front-back direction, and a guide module 306 mounted on the first mounting seat 304, the front end of the guide module 306 is recessed to form an arc-shaped forming surface 30611, the angle of the forming surface 30611 is between {90°-30°} and the plate material can abut against and slide along the forming surface 30611 after being bent under stress and gradually deform, and the workbench 10 is also provided with a servo motor 302 for driving the guide module 306. In this way, in the forming process of the coil spring, the guide module has the functions of guiding and tightening the inner ring of the coil spring, and the servo motor continuously corrects the force exerted on the plate material by the guide module, so that the part is precisely wound, avoiding manual secondary shaping in the later stage, improving the yield rate and stability of the part, reducing the rate of manual intervention in the later stage, and improving the production efficiency and automation degree of the coil spring production. In this embodiment, the force exerted on the plate material by the guide module can be judged by detecting the load of the motor and the rebound coefficient of the material used to produce the coil spring, so as to better control the pitch of the coil spring.

[0031] In other embodiments, a pressure sensor can be installed between the guide module and the first mounting seat, and according to the value detected by the pressure sensor, it is judged whether the force exerted on the plate material is appropriate.

[0032] As shown in Figure 2 and Figure 5 , in this embodiment, the end of the guide module 306 abutting against the plate material is the forming end 3061, the right side of the forming end 3061 is recessed to form the forming surface 30611, and the forming surface 30611 is smoothly transitioned with the left side of the forming end 306. In this way, the angle of the coil spring when it is bent is avoided to be too large, stress fracture is avoided, the pitch accuracy of the coil spring is improved, and the coil spring forming process is smooth.

[0033] As shown in Figure 1 and Figure 5As shown, in the embodiment, the first roller set 305 and the second roller set 308 are oppositely arranged, the first roller set 305 is located at the rear side of the second roller set 308, and the plate material passes between the first roller set 305 and the second roller set 308 during the process of forming the plate material into a coil spring, and the first roller set 305 and the second roller set 308 are attached to the plate material to make the plate material to be bent more flat, thereby improving the qualified rate of the coil spring.

[0034] As shown, Figures 2-5 In the embodiment, the pitch self-shaping device further comprises a mounting plate 301, the servo motor 302 and the sliding block 303 are mounted on the workbench 10 through the mounting plate 301, and the plurality of rollers in the second roller set are mounted on the workbench through a second mounting seat located at the front side of the mounting plate. In this way, each part in the equipment can be assembled and mounted on the workbench respectively, which facilitates the manufacturing of the equipment, reduces the cost of the equipment, and facilitates the maintenance and maintenance in the later period. Preferably, two left-right extending sliding rails 3011 are fixed on the mounting plate 301, the two sliding rails 3011 are arranged front and back, and a first sliding block 3032 is slidingly installed on each of the two sliding rails 3011, the two first sliding blocks 3032 are fixed on the bottom of the sliding block 303, the servo motor 302 is mounted on the mounting plate 301, the servo motor 302 is located at the right side of the sliding rail 3011, a first lead screw 3021 is mounted on the output end of the servo motor 302, and the first lead screw 3021 is threadedly connected with the threaded hole 3031 on the sliding block 303. In this way, the sliding movement process can be more stable through the two groups of sliding rails and sliding blocks. The moving distance of the sliding block can be accurately controlled by starting the servo motor to drive the lead screw to rotate.

[0035] In the embodiment, the servo motor drives the sliding block to slide through the first lead screw, which is suitable for small-sized parts. When large-sized parts are produced, the servo motor can drive the sliding block to slide through the meshing gear and rack, so as to produce larger parts and improve the applicability of the device.

[0036] In the embodiment, the sliding block 303 is provided with a first mounting seat 304 capable of sliding forward and backward, and the guide module 306 and the first roller set 305 are mounted on the first mounting seat 304. In this way, the first roller set 305 and the guide module 306 can move simultaneously, on the one hand, the gap between the first roller set 305 and the second roller set 308 can be adjusted, which is convenient for forming plate materials of different specifications, and on the other hand, the structure of the pitch self-shaping device can be simplified, and the pitch self-shaping device is more compact. Figure 4 and Figure 5As shown, the top of the sliding block 303 is provided with two front and rear direction extending sliding grooves 3033, the two sliding grooves 3033 are arranged left and right, and the second sliding block is slidingly installed in each of the two sliding grooves 3033. The two second sliding blocks are fixedly connected with the bottom of the first mounting seat 304. In this way, the sliding of the first mounting seat is more stable through the two groups of sliding grooves and sliding blocks. Figure 4 As shown, the top of the sliding block 303 is provided with a driving groove 3034, the driving groove 3034 is located between the two sliding grooves 3033, the rear side of the first mounting seat 304 is fixedly provided with a driving plate 3041, the bottom of the driving plate 3041 extends downward into the driving groove 3034, the second lead screw 3035 is rotatably installed on the sliding block 303, the front end of the second lead screw 3035 penetrates through the driving groove 3034, the second lead screw 3035 penetrates through the driving plate 3041 in the front and rear direction and is threadedly connected with the driving plate 3041, and the rear end of the second lead screw 3035 is provided with a hand wheel 3036 for driving the second lead screw 3035 to rotate. In this way, the movement of the guide module can be accurately controlled through the lead screw, and has a certain self-locking ability to prevent the first mounting seat from retreating. In other embodiments, the second lead screw can be driven by a motor to increase the degree of automation of the device.

[0037] As shown in Figure 2 , Figure 3 and Figure 5 , in this embodiment, the guide module 306 is detachably installed on the first mounting seat 304. Among them, the rollers in the first roller group 305 are rotatably installed on the front end of the first mounting seat 304 through the roller shaft, and the first roller group 305 is located on the right side of the guide module 306. The left end of the first mounting seat 304 is fixedly provided with a support plate 3042 through fasteners, the bottom of the front end of the support plate 3042 is provided with a limiting opening 30421, the rear end of the guide module 306 is matched with the limiting opening of the support plate 3042, and the guide module 306 is fixed on the support plate 3042 through fasteners. In this way, different guide modules can be replaced according to different requirements of the coil spring, improving the installation efficiency and accuracy of the installation position of the guide module. In this way, different guide modules can be replaced according to different requirements of the coil spring.

[0038] As shown in Figure 2 and Figure 5As shown, in order to improve the yield of the coil spring, prevent the longitudinal jumping in the plate forming process, in the embodiment, the rollers adjacent to the guide module 306 in the first roller group 305 have flanges, the front end of the first mounting base 304 is fixedly installed with a limiting plate 3042, and the limiting plate 3043 is located below the roller flange; in the coil spring forming process, the plate passes between the roller flange and the limiting plate 3043, wherein the front and rear ends of the plate are respectively abutted against the multiple rollers in the first roller group 305 and the multiple rollers in the second roller group 308, the first roller group 305 and the second roller group 308 flatten the plate, and the upper and lower ends of the plate are located between the roller flange and the limiting plate 3041 to prevent the coil spring from being unqualified after being formed due to the radial jumping of the plate and needing manual correction. Further preferably, the rollers with flanges in the first roller group can slide in the up-down direction of the roller shaft. In this way, the specifications of the coil springs that can be produced by the equipment are expanded, and the applicability of the equipment is provided. In other embodiments, the rollers in the first roller group 305 and / or the second roller group 308 all have flanges, and the rollers in the first roller group can slide along the roller shaft.

[0039] As shown in Figure 1 An aero-engine coil spring part rapid forming equipment, comprising the coil spring pitch automatic shaping device, as shown in Figure 2 As shown, the aero-engine coil spring part rapid forming equipment further comprises a mandrel, the mandrel 50 is rotatably installed on the workbench 10, and the workbench 10 is further installed with a motor for driving the mandrel to rotate, a clamping groove for inserting the plate is formed in the side surface of the mandrel 10, and the mandrel is located at the left side of the coil spring pitch automatic shaping device.

[0040] In the embodiment, as shown in Figure 1 As shown, the workbench 10 is further installed with a controller 40, the plate is first pre-bent by the mandrel 50, then the guide module 306 installed on the sliding block 303 is adjusted to abut against the bent part of the plate by manually rotating the second screw rod 3035 to adjust the forming surface 03611 of the guide module 306, at the same time, the first roller group 305 and the second roller group 308 are adjusted to abut against the surface of the plate, after receiving the positioning parameters transmitted by the digital controller 40, the servo motor 302 drives the first screw rod 0321 to drive the sliding block 304 to move away from the mandrel 50 according to the rebound coefficient of the plate and is adjusted in real time, so as to guarantee the forming effect of the coil spring.

[0041] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the specification, the illustrative description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0042] Although the embodiments of the present application have been shown and described above, it is understood that the above-described embodiments are exemplary, and should not be construed as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above-described embodiments within the scope of the present application without departing from the principles and spirit of the present application.

Claims

1. An automatic pitch shaping device for coil springs, characterized in that: The device comprises a workbench (10), a sliding block (303) mounted on the workbench (10) and capable of sliding in the left-right direction, a first mounting base (304) mounted on the sliding block (303) and capable of sliding in the front-back direction, and a guide mold (306) mounted on the first mounting base (304), wherein the guide mold (306) is provided with an arc-shaped forming surface (30611), and the plate material can abut against the forming surface (30611) and continue to deform along the forming surface (30611) after being bent under stress, and the workbench (10) is further provided with a servo motor (302) for driving the sliding block (303); a pressure sensor is mounted between the guide mold and the first mounting base, and whether the force applied to the plate material is appropriate is determined according to the value detected by the pressure sensor; The servo motor (302) is connected with the sliding block (303), and the sliding block (303) is provided with a hand wheel (3036) for driving the first mounting base (304); the sliding block (303) is threadedly connected with a first lead screw (3021) connected with the servo motor (302), and the first mounting base (304) is threadedly connected with a second lead screw (3035) rotatably connected with the sliding block (303), and the second lead screw (3035) is connected with the hand wheel (3036).

2. A device for automatic pitch truing of a coil spring according to claim 1, characterized in that: The guide mold (306) is detachably mounted on the first mounting base (304).

3. A device for automatic pitch truing of a coil spring according to claim 1, characterized in that: The device further comprises a first roller set (305) and a second roller set (308) mounted on the workbench for flattening the plate material, and the first roller set (305) and the second roller set (308) are oppositely arranged.

4. The device for automatic pitch truing of a coil spring of claim 1, wherein: The angle of the forming surface (30611) is between {90°~30°}.

5. The device for automatic pitch truing of a coil spring according to claim 1, characterized in that: The device further comprises a mounting plate (301) fixed on the workbench, and the servo motor (302) and the sliding block (303) are both mounted on the mounting plate (301).

6. A device for automatic pitch truing of a coil spring according to claim 5, characterized in that: The mounting plate (301) and the sliding block (303) are connected through two groups of slide rails and slide blocks extending in the left-right direction and arranged in the front-back direction; and the sliding block (303) and the first mounting base (304) are connected through two groups of slide grooves and slide blocks extending in the front-back direction and arranged in the left-right direction.

7. A rapid prototyping apparatus for aircraft engine coil spring parts, characterized by: The device comprises the spring pitch automatic shaping device according to any one of claims 1-6.

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