CN115255078A - Rapid forming equipment for aero-engine coil spring parts and automatic pitch shaping device of rapid forming equipment - Google Patents

Abstract

The invention discloses a rapid forming device for a coil spring part of an aero-engine and an automatic pitch shaping device of the coil spring part, and the rapid forming device comprises a workbench, a sliding block, a first mounting seat and a guide module, wherein the sliding block is installed on the workbench and can slide along the left-right direction, the first mounting seat is installed on the sliding block and can slide along the front-back direction, the guide module is installed on the first mounting seat, an arc-shaped forming surface is formed on the guide module in a concave mode, the unfolding angle of the forming surface is not less than 30 degrees and not more than 90 degrees, a plate can abut against the forming surface after being stressed and bent and can slide along the forming surface to gradually deform, and a servo motor for driving the guide module is further installed on the workbench. So, in the forming process of coil spring, the guide module has the direction and makes the effect that the coil spring inner circle tightens up to constantly revise the force that the guide module was exerted on panel through servo motor, make the part obtain accurate winding, reduce artifical later stage intervention rate, promote the production efficiency and the degree of automation of coil spring production.

Description

Rapid forming equipment for aero-engine coil spring parts and automatic pitch shaping device of rapid forming equipment

Technical Field

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

Background

The coil spring is used as a part used for mechanical power, and continuously provides a larger restoring force for each part in a narrow space of an aeroengine, and each part has a strict requirement on durability, so that the parts are special and difficult to manufacture, and the parameters of each part can be finally determined by manually correcting the parts by a bench worker after molding.

Patent document CN101456053B discloses a servo-controlled pitch forming mechanism of an automatic spring coiling machine. The output shaft of the servo motor is connected with a height cam through a key, the height cam rotates around the output shaft of the servo motor by the same angle, the lift ranges of the cams are the same, the bottom end of the connecting seat is connected and installed on a linear guide rail through threads, and the other end of the connecting seat is locked on the guide rod through a locking screw; the connecting seat is provided with a pin hole, a pin shaft is arranged in the pin hole, a driven bearing is arranged on the pin shaft, and the guide rod is arranged on linear bearings arranged on the front wall plate and the rear wall plate; the rear part of the guide rod is provided with a compression spring, and the driven bearing is always attached to the cam surface of the height cam under the combined action of the compression spring and the height cam. The servo motor drives the height cam to rotate to push the driven bearing, the driven bearing is arranged on the connecting seat, the connecting seat is arranged on the linear guide rail, the connecting seat does reciprocating motion on the linear guide rail, the guide rod is clamped by the other end of the connecting seat through the clamping screw, the guide rod also does reciprocating motion in the linear bearing along with the motion of the driven bearing, and the screw pitch push rod arranged on the guide rod can also do reciprocating motion back and forth.

Because the spring coiling part used in the aero-engine is difficult to control accurately by depending on manpower due to the particularity of the material, the material is easy to break and the product is scrapped because of overlarge force applied to the workpiece in the forming process; if the applied force is too small, the thread pitch of the coil spring is increased, the later use requirement cannot be met, the part needs to be placed into a special die for correction through manual intervention in the later period, the process is still used in some occasions at present, the process mainly depends on experience of people, and the characteristics of high rejection rate and unstable output of processed products exist. In the process of forming the plate into the coil spring, the force applied to the plate cannot be controlled in the prior art, so that the pitch of the coil spring is difficult to control, and the coil spring needs to be corrected by manual intervention in the later period.

Disclosure of Invention

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 invention aims to provide rapid forming equipment for the coil spring part of the aero-engine and an automatic pitch shaping device thereof.

In order to achieve the purpose, the invention adopts the following technical scheme: an automatic shaping device for the pitch of coiled spring is composed of a bench, a slide block able to slide left and right, the first installing seat able to slide front and back, and a guide module with arc shaping surface for pressing the plate against said shaping surface and gradually deforming it along said shaping surface, and a servo motor for driving said guide module. So, in the forming process of coil spring, the guide module has the direction and makes the effect that the coil spring inner circle tightens up to constantly revise the force that the guide module applyed on panel through servo motor, make the part obtain accurate winding, avoided the artificial secondary plastic in later stage, improve the yields and the fashioned stability of part, reduce artifical later stage intervention rate, promote the production efficiency and the degree of automation of coil spring production.

Preferably, at least one side surface of the guide module is in circular arc transition with the forming surface. Therefore, the phenomenon that the bending angle of the plate is too large and stress fracture occurs is avoided.

Preferably, the molding surface has an angle of {90 ° -30 ° }.

Preferably, the plate flattening machine further comprises a first roller group and a second roller group which are arranged on the workbench and used for flattening the plate, and the first roller group and the second roller group are arranged oppositely. Therefore, the plate is flattened during bending, so that the forming process of the coil spring is more stable.

Preferably, the first roller group is mounted on the first mounting seat and moves along with the guide module. Therefore, the adaptability of the device is improved to adapt to plates of different specifications.

Preferably, the servo motor is connected with a sliding block, and a hand wheel for driving the first mounting seat is mounted on the sliding block. Therefore, the servo motor only controls the guide module to move in the left-right direction, the control difficulty of the device on the pitch of the coil spring is reduced, and the complexity of the device is reduced.

Preferably, the sliding block is in threaded connection with a first lead screw connected with the servo motor), the first mounting seat is in threaded connection with a second lead screw, the second lead screw is rotatably connected with the sliding block, and the second lead screw is connected with the hand wheel.

Preferably, the device further comprises a mounting plate fixed on the workbench, and the servo motor and the sliding block are mounted on the mounting plate. Thus, the assembly of the device is facilitated.

Preferably, the mounting plate and the sliding block are connected through two groups of sliding rails and sliding blocks which extend in the left-right direction and are arranged in the front-back direction; the sliding block is connected with the first mounting seat through two groups of sliding grooves and sliding blocks, wherein the sliding grooves extend in the front-back direction and are arranged in the left-right direction. So, slider and first mount pad are all installed through the mode of two slides for the motion of slider and mount pad is more stable, avoids leading the module and trembles the yield that influences the coil spring.

A quick forming device for a coil spring part of an aero-engine comprises the automatic shaping device for the pitch of the coil spring.

The technical scheme of the invention has the beneficial effects that: in the forming process of the coil spring, the guide module has the guiding function and the tightening function of the inner ring of the coil spring, the force applied to the plate by the guide module is continuously corrected through the servo motor, so that the parts are accurately wound, the artificial secondary shaping in the later period is avoided, the yield and the forming stability of the parts are improved, the artificial later-period intervention rate is reduced, and the production efficiency and the automation degree of the coil spring production are improved.

Drawings

FIG. 1 is a schematic structural diagram of rapid forming equipment for a coil spring part of an aero-engine according to the present invention;

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

FIG. 3 is a schematic structural diagram of an automatic pitch shaper;

FIG. 4 is a schematic view of a connection structure of a slider, a first mounting seat, a first roller set and a guide module;

fig. 5 is a schematic structural diagram of a guide module.

Reference numerals: 10. a work table; 301. mounting a plate; 3011. a sliding track; 302. a servo motor; 3021. a first lead screw; 303. a slider; 3031. a threaded hole; 3032. a first sliding block; 3033. a sliding groove; 3034. a drive slot; 3035. a second lead screw; 3036. a hand wheel; 304. a first mounting seat; 3041. a drive plate; 3042. a support plate; 30421. a limiting port; 3043. a limiting plate; 305. a first roller train; 306. a guide module; 3061. a forming end; 30611. molding surface; 307. a second mounting seat; 308. a second roller set; 50. a core rod; 70. 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 reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the 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 implicitly indicating 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 otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely 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.

The following embodiments take fig. 1 as a reference for the orientation, the workbench in fig. 1 is horizontally arranged, 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'.

Examples

The automatic screw pitch reshaping device as shown in fig. 1 and fig. 2 comprises a workbench 10, a slide block 303 which is installed on the workbench 10 and can slide along the left-right direction, a first installation base 304 which is installed on the slide block 303 and can slide along the front-back direction, and a guide module 306 which is installed on the first installation base 304, wherein an arc-shaped molding surface 30611 is formed at the front end of the guide module 306 in a concave manner, the angle of the molding surface 30611 is between {90 degrees and 30 degrees }, the plate can be abutted against the molding surface 30611 after being bent by force and can slide along the molding surface 30611 to be gradually deformed, and a servo motor 302 for driving the guide module 306 is also installed on the workbench 10. So set up, in the forming process of coil spring, the guide module has the direction and makes the effect that the coil spring inner circle tightens up to constantly revise the force that the guide module applyed on panel through servo motor, make the part obtain accurate winding, avoided the artificial secondary plastic in later stage, improve the yields and the fashioned stability of part, reduce artifical later stage intervention rate, promote the production efficiency and the degree of automation of coil spring production. In the embodiment, the force exerted on the plate by the guide module can be judged by detecting the load of the motor and the rebound coefficient of the material for producing the coil spring, so that the pitch of the coil spring can be better controlled.

In other embodiments, a pressure sensor may be installed between the guide module and the first mounting seat, and whether the force applied to the plate material is appropriate may be determined according to a value detected by the pressure sensor.

As shown in fig. 2 and fig. 5, in this embodiment, one end of the guide module 306, which abuts against the plate, is a forming end 3061, a right side portion of the forming end 3061 is recessed to form a forming surface 30611, and the forming surface 30611 and a left side portion of the forming end 306 are in smooth transition. Therefore, the phenomenon that the angle of the coil spring is too large when the coil spring is bent and stress fracture occurs is avoided, and the pitch precision of the coil spring is improved while the forming process of the coil spring is smooth.

As shown in fig. 1 and 5, in this embodiment, the bending die further includes a first roller group 305 and a second roller group 308, the first roller group 305 and the second roller group 308 are disposed oppositely, the first roller group 305 is located at the rear side of the second roller group 308, when a sheet material is formed into a coil spring, the sheet material passes through between the first roller group 305 and the second roller group 308, and the first roller group 305 and the second roller group 308 are attached to the sheet material, so that the sheet material to be bent is flatter, and the yield of the coil spring is improved.

As shown in fig. 2 to 5, in this embodiment, the pitch self-shaping device further includes a mounting plate 301, the servo motor 302 and the sliding block 303 are both mounted on the worktable 10 through the mounting plate 301, and the plurality of rollers in the second roller group are mounted on the worktable through a second mounting seat, which is located at the front side of the mounting plate. 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 the later maintenance and the maintenance are convenient. Preferably, two sliding tracks 3011 extending in the left-right direction are fixed on the mounting plate 301, the two sliding tracks 3011 are arranged in front and at the back, first sliding blocks 3032 are slidably mounted on the two sliding tracks 3011, the two first sliding blocks 3032 are fixed on the bottom of the slider 303, the servo motor 302 is mounted on the mounting plate 301, the servo motor 302 is located on the right side of the sliding tracks 3011, a first screw rod 3021 is mounted at the output end of the servo motor 302, and the first screw rod 3021 is in threaded connection with a threaded hole 3031 on the slider 303; therefore, the sliding motion process can be more stable through the two groups of sliding rails and the sliding blocks; the screw rod is driven to rotate by starting the servo motor, so that the moving distance of the sliding block can be accurately controlled.

In the embodiment, the servo motor is suitable for small-specification parts in a sliding mode of the first screw rod driving sliding block, and when the specification parts are produced, the servo motor can drive the sliding block to slide through the meshed gear and rack so as to produce the parts with larger specifications, and the applicability of the device is improved.

In this embodiment, the sliding block 303 is provided with a first mounting seat 304 capable of sliding back and forth, and the guide module 306 and the first roller group 305 are both mounted on the first mounting seat 304. Therefore, the first roller group 305 and the guide module 306 can move simultaneously, on one hand, the gap between the first roller group 305 and the second roller group 308 can be adjusted, so that the plates with different specifications can be conveniently formed, on the other hand, the structure of the screw pitch self-shaping device can be simplified, and the screw pitch self-shaping device is more compact. As shown in fig. 4 and fig. 5, in the preferred embodiment, the top of the sliding block 303 is provided with two sliding grooves 3033 extending in the front-back direction, the two sliding grooves 3033 are arranged left and right, second sliding blocks are slidably mounted in the two sliding grooves 3033, and the two second sliding blocks are fixedly connected with the bottom of the first mounting base 304; so, make the slip of first mount pad more steady through two sets of spouts and sliding block. As shown in fig. 4, a driving groove 3034 is formed at the top of the slider 303, the driving groove 3034 is located between two sliding grooves 3033, a driving plate 3041 is fixed at the rear side of the first mounting base 304, the bottom of the driving plate 3041 extends downwards into the driving groove 3034, a second screw rod 3035 is rotatably mounted on the slider 303, the front end of the second screw rod 3035 passes through the driving groove 3034, the second screw rod 3035 penetrates through the driving plate 3041 in the front-rear direction and is in threaded connection with the driving plate 3041, and a hand wheel 3036 for driving the second screw rod 3035 to rotate is mounted at the rear end of the second screw rod 3035; so, through the removal that the module was led in control that the lead screw can be accurate, and have certain auto-lock ability, prevent that first mount pad from moving back. In other embodiments, the second lead screw may be driven by a motor to increase the degree of automation of the device.

As shown in fig. 2, 3 and 5, in the present embodiment, the guide module 306 is detachably mounted on the first mounting base 304. Wherein, the rollers in the first roller group 305 are respectively rotatably mounted at the front end of the first mounting base 304 through roller shafts, and the first roller group 305 is located at the right side of the guide module 306; a supporting plate 3042 is fixedly mounted at the left end of the first mounting seat 304 through a fastener, a limiting opening 30421 is formed at the bottom of the front end of the supporting plate 3042, the rear end of the guide module 306 is matched with the limiting opening of the supporting plate 3042, and the guide module 306 is fixed on the supporting plate 3042 through the fastener. Therefore, different guide modules can be replaced according to different requirements of different coil springs, and the installation efficiency of the guide modules and the accuracy of installation positions are improved. This allows for the replacement of different guide modules with coil springs having different requirements.

As shown in fig. 2 and fig. 5, in order to improve the yield of coil springs and prevent longitudinal jumping during the forming process of sheet materials, in this embodiment, rollers adjacent to the guide module 306 in the first roller group 305 have flanges, a limiting plate 3042 is fixedly mounted at the front end of the first mounting seat 304, and the limiting plate 3043 is located below the flanges of the rollers; in the process of forming the coil spring, the plate material passes through between the roller flange and the limiting plate 3043, wherein the front end and the rear end of the plate material are respectively abutted against the rollers in the first roller set 305 and the rollers in the second roller set 308, the first roller set 305 and the second roller set 308 flatten the plate material, and the upper end and the lower end of the plate material are positioned between the roller flange and the limiting plate 3041 to prevent the coil spring from being unqualified after forming due to radial runout of the plate material and needing manual correction. Further preferably, the rollers of the first roller set, which are provided with flanges, can slide along the roller shafts in the up-and-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 305 and/or the second roller set 308 each have a flange, and the rollers in the first roller set are each slidable along the roller shaft.

As shown in fig. 1, the rapid forming equipment for the aero-engine coil spring part comprises the automatic coil spring pitch shaping device, and as shown in fig. 2, the rapid forming equipment for the aero-engine coil spring part further comprises a core rod, the core rod 50 is rotatably mounted on a workbench 10, a motor for driving the core rod to rotate is further mounted on the workbench 10, a clamping groove for inserting a plate is formed in the side face of the core rod 10, and the core rod is located on the left side of the automatic coil spring pitch shaping device.

In this embodiment, as shown in fig. 1, a controller 40 is further installed on the worktable 10, the sheet is pre-bent through the mandrel 50, then the guide module 306 installed on the slider 303 adjusts the forming surface 03611 of the guide module 306 to be attached to the bent portion of the sheet by manually rotating the second lead screw 3035, and at the same time, the first roller group 305 and the second roller group 308 are adjusted to be attached to the surface of the sheet, after the servo motor 302 receives the positioning parameters transmitted from the digitized controller 40, the servo motor 40 drives the first lead screw 0321 to drive the slider 304 to be away from the mandrel 50 and adjust in real time according to the rebounding coefficient of the sheet, thereby ensuring the forming effect of the coil spring.

In the description of the specification, reference to the description of "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like means 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. An automatic shaping device of coil spring pitch which characterized in that: the device comprises a workbench (10), a sliding block (303) which is arranged on the workbench (10) and can slide along the left-right direction, a first mounting seat (304) which is arranged on the sliding block (303) and can slide along the front-back direction, and a guide module (306) arranged on the first mounting seat (304), wherein an arc-shaped molding surface (30611) is arranged on the guide module (306), the plate can be abutted against the molding surface (30611) after being stressed and bent and can continuously deform along the molding surface (30611), and a servo motor (302) for driving the sliding block (303) is further arranged on the workbench (10).

2. An automatic coil spring pitch reshaping device as defined in claim 1, wherein: at least one side of the guide module (306) is in circular arc transition with the molding surface (30611).

3. An automatic coil spring pitch reshaping device as defined in claim 1, wherein: the guide module (306) is detachably mounted on the first mounting seat (304).

4. The automatic coil spring pitch reshaping device as claimed in claim 1, wherein: the plate flattening machine further comprises a first roller group (305) and a second roller group (308) which are arranged on the workbench and used for flattening the plate, and the first roller group (305) and the second roller group (308) are arranged oppositely.

5. An automatic coil spring pitch reshaping device as defined in claim 4, wherein: the molding surface (30611) has an angle of between {90 DEG and 30 deg }.

6. An automatic coil spring pitch reshaping device as defined in claim 1, wherein: the servo motor (302) is connected with the sliding block (303), and a hand wheel (3036) used for driving the first mounting seat (304) is mounted on the sliding block (303).

7. An automatic coil spring pitch reshaping device as defined in claim 6, wherein: the slider (303) is in threaded connection with a first screw rod (3021) connected with the servo motor (302), the first mounting base (304) is in threaded connection with a second screw rod (3035), the second screw rod (3035) is rotatably connected with the slider (303), and the second screw rod (3035) is connected with a hand wheel (3036).

8. An automatic coil spring pitch reshaping device as defined in claim 6, wherein: still including fixing mounting panel (301) on the workstation, servo motor (302) and slider (303) are all installed on mounting panel (301).

9. An automatic coil spring pitch reshaping device as claimed in claim 8, wherein: the mounting plate (301) is connected with the sliding block (303) through two groups of sliding rails which extend in the left-right direction and are arranged in the front-back direction; the sliding block (303) is connected with the first mounting seat (304) through two groups of sliding grooves and sliding blocks, wherein the sliding grooves extend in the front-back direction and are arranged in the left-right direction.

10. The utility model provides an aeroengine coil spring part rapid prototyping is equipped which characterized in that: an automatic coil spring pitch reshaping device comprising a coil spring as claimed in any one of claims 1 to 9.

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