Cylindrical part inner side annular reverse spinning forming equipment and forming method

Abstract

The invention relates to the field of spinning forming, in particular to cylindrical part inner side annular reverse spinning forming equipment and a forming method.The cylindrical part inner side annular reverse spinning forming equipment comprises a rack, a rotating device and a spinning device are arranged on the rack, the rotating device comprises a rotating shaft, a driving mechanism and a mold, a workpiece is placed in the mold, and the rotating shaft and the driving mechanism are installed on the rack; the driving mechanism is connected with the rotating shaft, the mold is installed on the rotating shaft, the spinning device comprises an advancing mechanism, a cantilever and at least two spinning wheels, the advancing mechanism is installed on the rack, the cantilever is installed on the advancing mechanism, one end of the cantilever extends in the direction of the rotating shaft, and the at least two spinning wheels are installed at the end, close to the rotating shaft, of the cantilever; and the at least two spinning wheels are installed in the circumferential direction of the end of the cantilever at equal intervals, the spinning wheels are used for spinning workpieces installed in the mold, the problem that in a traditional mode, the spinning effect of the cylindrical part is poor is solved, and the purpose of improving the spinning effect of the cylindrical part can be achieved.

Description

Technical Field

[0001] This application relates to the field of spinning forming, and in particular to a spinning forming device and forming method for the inner circumferential reverse spinning forming of cylindrical parts. Background Technology

[0002] Spinning involves fixing a flat or hollow blank onto a die in a spinning machine. While the blank rotates with the machine spindle, pressure is applied to the blank using spinning wheels or rollers, causing localized plastic deformation. Spinning is a special forming method that can be used to perform processes such as deep drawing, flanging, necking, bulging, and curling of rotating bodies.

[0003] Currently, the spinning of cylindrical parts typically employs a forward spinning method. First, the cylindrical part to be spun is fixed to a spinning die on the machine tool's spindle using a flange. A cantilever beam is mounted on the machine tool along the axis of the spindle, with a spinning wheel installed at one end. By driving the cantilever beam horizontally towards the cylindrical part, the spinning wheel moves to the cylindrical part. Then, by driving the cantilever beam vertically, the spinning wheel moves vertically, bringing it closer to the inner wall of the cylindrical part. Finally, by driving the spindle to rotate, the cylindrical part rotates, and the spinning wheel thins the cylindrical part through the spinning process.

[0004] However, since only one spinning wheel is installed on the cantilever beam, when the spinning wheel spins the cylindrical part, it is easy to cause an imbalance in the force on the spinning die, which can easily lead to inconsistent thinning rates of the cylindrical part during spinning, resulting in poor spinning effect of the cylindrical part. Summary of the Invention

[0005] In order to improve the spinning effect of cylindrical parts, this application provides a cylindrical part inner circumferential reverse spinning forming equipment and forming method.

[0006] In a first aspect, this application provides a cylindrical part inner circumferential reverse spinning forming device, which adopts the following technical solution: A cylindrical part inner circumferential reverse spinning forming device includes a frame, on which a rotating device and a spinning device are provided. The rotating device includes a rotating shaft, a driving mechanism, and a mold. The mold is used to place the workpiece. The rotating shaft and the driving mechanism are mounted on the frame. The driving mechanism is connected to the rotating shaft. The mold is mounted on the rotating shaft. The spinning device includes a traveling mechanism, a cantilever, and at least two spinning wheels. The traveling mechanism is mounted on the frame. The cantilever is mounted on the traveling mechanism, and one end of the cantilever extends towards the rotating shaft. The at least two spinning wheels are mounted on the cantilever near the end of the rotating shaft, and the at least two spinning wheels are equidistantly installed along the circumferential direction of the cantilever end. The spinning wheels are used to spin the workpiece mounted in the mold.

[0007] By adopting the above technical solution, the mold and the cylindrical workpiece are mounted on a rotating shaft, and then the rotating shaft is driven to rotate by a drive mechanism, thereby causing the workpiece to rotate. Then, a traveling mechanism drives the cantilever to move, causing the cantilever to move at least two spinning rollers mounted on it to the workpiece. The spinning rollers then perform a spinning thinning process on the workpiece. Because the at least two spinning rollers on the cantilever are installed at equal intervals along the circumference of the cantilever, the inner wall of the mold can be subjected to balanced force when the rollers spin the workpiece, resulting in a consistent spinning thinning rate for the workpiece, thus facilitating improved spinning effects on cylindrical parts.

[0008] In one specific implementation, the cantilever is equipped with an adjustment mechanism for adjusting the distance between the spinning roller and the inner wall of the mold. The adjustment mechanism includes a power component and an adjustment component. The adjustment component includes an adjustment screw and a slider. The adjustment screw is rotatably mounted on the end of the cantilever near the mold, and the axis of the adjustment screw is perpendicular to the axis of the cantilever. The slider is slidably mounted on the cantilever and is threadedly connected to the adjustment screw. The spinning roller is mounted on the slider. The power component is mounted on the cantilever and is connected to the adjustment screw.

[0009] By adopting the above technical solution, when the spinning wheel is transported to the workpiece by the cantilever, the adjusting screw is driven to rotate by the power component, thereby causing the adjusting screw to move the slider, which in turn causes the slider to move the spinning wheel, thereby adjusting the distance between the spinning wheel and the inner wall of the workpiece, thus facilitating the spinning process of the workpiece.

[0010] In one specific implementation, the power assembly includes an adjusting motor, an adjusting rod, and an adjusting gear. The adjusting motor is mounted on the cantilever, the adjusting rod is rotatably mounted on the cantilever, and the axis of the adjusting rod is parallel to the axis along the length of the cantilever. The adjusting rod is connected to the output shaft of the adjusting motor, the adjusting gear is coaxially mounted on the end of the adjusting rod away from the adjusting motor, and a transmission gear is mounted on the end of the adjusting screw, the transmission gear meshing with the adjusting gear.

[0011] By adopting the above technical solution, the motor drives the adjusting rod to rotate, which in turn drives the adjusting gear to rotate, which in turn drives the transmission gear to rotate, thereby driving the adjusting screw to rotate. This allows the slider to move by rotating the adjusting screw, which in turn facilitates the adjustment of the distance between the spinning roller and the mold, thus making it easier to control the thickness of the workpiece during spinning.

[0012] In one specific implementation, a connecting mechanism is further provided on the rotating shaft at the connection point with the mold. The connecting mechanism includes a positioning component and a feeding component. The positioning component includes a positioning frame, a positioning block, and a positioning spring. The end of the rotating shaft is provided with an insertion groove for the mold and the workpiece to insert into each other. The end of the rotating shaft is also provided with a positioning groove that communicates with the insertion groove. The positioning frame is installed in the positioning groove. The positioning block is slidably installed on the positioning frame. The positioning spring is installed on the positioning frame. One end of the positioning spring is connected to the side wall of the positioning frame, and the other end is connected to the side wall of the positioning block. The end of the positioning block away from the positioning spring extends into the insertion groove, and the end of the positioning block away from the positioning spring is used to abut against the inner wall of the workpiece. The positioning block is connected to the feeding component.

[0013] By adopting the above technical solution, when the workpiece and mold are inserted into the insertion slot, the end of the positioning block abuts against the inner wall of the workpiece, thereby compressing the positioning spring. This causes the end of the positioning block to press firmly against the inner wall of the workpiece under the action of the positioning spring, allowing the workpiece and mold to rotate synchronously with the rotating shaft. After spinning is completed, the cantilever drives the unloading assembly, which in turn moves the positioning block, compressing the positioning spring and separating the positioning block from the workpiece. This releases the positioning of the workpiece, allowing the mold and workpiece to be unloaded from the rotating shaft.

[0014] In one specific implementation, the feeding assembly includes a feeding rod, a push rod, and a feeding spring. The end of the rotating shaft is also provided with a mounting groove, which communicates with a positioning groove. The feeding rod is slidably installed in the mounting groove along the axial direction of the rotating shaft, and the axis of the feeding rod is perpendicular to the axis of the positioning block. One end of the feeding rod extends outward from the end of the rotating shaft, and the end of the feeding rod outside the mounting groove is used to abut against the cantilever. A push block is installed on the side wall of the feeding rod, and the axis of the push block is parallel to the axis of the feeding rod. The side of the push block near the side wall of the feeding rod has a compression ramp. A guide rod is installed on the side wall of the positioning block, and the guide rod is used to press against the push block. The inclined plane abuts against the workpiece. The feeding spring is installed in the mounting groove. One end of the feeding spring is connected to the side wall of the feeding rod, and the other end is connected to the inner wall of the mounting groove. A deflection groove is also provided in the rotating shaft. One end of the deflection groove is connected to the insertion groove, and the other end is connected to the mounting groove. The push rod is rotatably installed in the deflection groove, and one end of the push rod extends to the insertion groove. The end of the push rod located at the insertion groove is used to abut against the mold and the workpiece. The other end of the push rod extends to the mounting groove, and the other end of the push rod is used to abut against the end of the feeding rod. A return spring is also installed in the deflection. One end of the return spring is connected to the inner wall of the deflection, and the other end is connected to the side wall of the push rod.

[0015] By adopting the above technical solution, when it is necessary to unload the workpiece, the unloading rod is pushed by the cantilever, causing the unloading rod to compress the unloading spring. The unloading rod then pushes the guide rod through the push block, causing the guide rod to pull the positioning block and compress the positioning spring. This separates the positioning block from the inner wall of the workpiece, facilitating the release of the workpiece's positioning. As the unloading rod continues to move, its end abuts against one end of the push rod, causing the push rod to compress the return spring. This push rod, moving away from the return spring, pushes the workpiece and mold away from the insertion slot, thus facilitating the unloading of the workpiece and mold.

[0016] In one specific implementation, a compression groove is provided on the side wall of the feeding rod near the positioning frame, and the side wall of the compression groove is used to abut against the end of the positioning frame away from the positioning block.

[0017] By adopting the above technical solution, when the feeding rod is pushed, the end of the positioning frame slides along the side wall of the feeding rod into the insertion slot under the action of the positioning spring, so that the positioning spring can gradually recover from the compressed state to the relaxed state. Then, when the push block abuts against the guide rod on the bottom wall of the positioning block, the push block can easily compress the positioning block, thereby facilitating the release of the locking of the workpiece.

[0018] In one specific implementation, the end of the cantilever near the rotating shaft is provided with a top plate, which is used to abut against the end of the feed rod located outside the mounting groove of the rotating shaft.

[0019] By adopting the above technical solution, when it is necessary to unload workpieces and molds, the cantilever drives the top plate to abut against the unloading rod, thereby compressing the unloading rod into the mounting groove, thus facilitating the unloading action.

[0020] Secondly, this application provides a method for circumferential reverse spinning forming of a cylindrical part, which adopts the following scheme.

[0021] A method for spinning the inner circumferential side of a cylindrical part in reverse direction includes the following steps: Loading involves inserting the workpiece and mold into the end of the rotating shaft and positioning the workpiece and mold using a positioning assembly. Spinning involves driving the mold and workpiece on the rotating shaft to rotate, moving the cantilever so that the spinning wheels on the cantilever extend into the workpiece, and spinning the workpiece by at least two spinning wheels; The unloading process involves removing the spun workpiece and mold from the rotating shaft.

[0022] By adopting the above technical solution, after the workpiece and mold are mounted on the rotating shaft, the mold and workpiece are positioned by a positioning component. Then, the workpiece is spun by at least two spinning rollers, ensuring that the inner wall of the mold is subjected to balanced force, thereby improving the workpiece's thinning effect through spinning. After spinning is completed, the workpiece and mold are removed from the rotating shaft, thus completing the spinning process.

[0023] In one specific implementation, the spinning step further includes adjusting the spinning wheel. A power component drives an adjustment component to operate, causing the adjustment component to move the spinning wheel and adjust the distance between the spinning wheel and the inner wall of the workpiece. By adopting the above technical solution, when the spinning wheel is driven to the workpiece, the power component drives the adjustment component to operate, so that the adjustment component drives the spinning wheel to move, thereby realizing the adjustment of the distance between the spinning wheel and the inner wall of the workpiece, so as to achieve different thinning thickness requirements according to the design requirements.

[0024] In one specific implementation, the unloading step and the spinning step further include unlocking, using the top plate on the cantilever to drive the unloading component to move, causing the unloading component to drive the positioning component to move, so that the positioning component unlocks the mold and the workpiece.

[0025] By adopting the above technical solution, after spinning is completed, the positioning component is driven by the cantilever to release the locking of the workpiece and the mold, so as to facilitate the unloading of the workpiece and the mold.

[0026] In summary, this application includes at least one of the following beneficial effects: 1. This application provides at least two spinning rollers, which are equidistant from each other along the circumference of the cantilever. This makes it easier to ensure that the mold is subjected to balanced force when the spinning rollers spin the workpiece, thereby improving the spinning effect of cylindrical parts.

[0027] 2. This application provides an adjustment mechanism to facilitate the adjustment of the distance between the spinning roller and the inner wall of the workpiece, so as to meet the requirements of different thinning thicknesses.

[0028] 3. This application provides a connecting mechanism so that after spinning is completed, the connecting mechanism can be driven by the top plate on the cantilever to unlock the workpiece and the mold, thereby facilitating the unloading of the workpiece and the mold. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of the cylindrical part inner circumferential reverse spinning forming equipment of this application.

[0030] Figure 2 This is a schematic diagram of the traveling mechanism in the embodiments of this application.

[0031] Figure 3 This is a schematic diagram of the adjustment structure in an embodiment of this application.

[0032] Figure 4 This is an exploded view of the connecting mechanism in the embodiments of this application.

[0033] Figure 5 This is a schematic diagram of the installation of the connecting mechanism in the embodiments of this application.

[0034] Figure 6 This is a schematic diagram of the unloading process after the spinning process is completed in an embodiment of this application.

[0035] Figure 7 This is a schematic diagram of the spinning device performing spinning processing on a workpiece in an embodiment of this application.

[0036] Explanation of reference numerals in the attached figures: 1. Frame; 2. Rotating device; 21. Rotating shaft; 211. Insertion slot; 212. Mounting slot; 213. Positioning slot; 214. Deflection slot; 22. Mold; 23. Drive mechanism; 231. Drive motor; 232. Drive pulley; 233. Transmission pulley; 234. Belt; 3. Spinning device; 31. Traveling mechanism; 311. Traveling block; 312. Traveling motor; 313. Traveling screw; 32. Cantilever; 321. Top plate; 33. Spinning wheel; 4. Adjusting mechanism; 41. Power assembly; 411. Adjusting motor; 412. 413. Adjusting rod; 414. Adjusting gear; 415. Transmission gear; 42. Adjusting assembly; 426. Adjusting screw; 427. Slider; 5. Connecting mechanism; 51. Positioning assembly; 518. Positioning frame; 519. Slide rod; 510. Positioning block; 511. Positioning spring; 512. Guide rod; 521. Unloading assembly; 522. Unloading rod; 5211. Compression groove; 522. Mounting rod; 523. Push block; 524. Push rod; 5241. Bending part; 525. Unloading spring; 526. Return spring; 527. Baffle; 6. Workpiece. Detailed Implementation

[0037] The present application will be further described in detail below with reference to the accompanying drawings.

[0038] This application discloses an inner circumferential reverse spinning forming device for cylindrical parts, referring to... Figure 1 The machine includes a frame 1, on which a rotating device 2 and a spinning device 3 are mounted. The rotating device 2 is located at one end of the frame 1, and the spinning device 3 is located at the other end of the frame 1. The rotating device 2 is used to drive the cylindrical workpiece 6 to rotate, and the spinning device 3 is used to spin the workpiece 6 in the rotating device 2.

[0039] Reference Figure 1 and Figure 2The spinning device 3 includes a traveling mechanism 31, a cantilever 32, and at least two spinning wheels 33. The traveling mechanism 31 includes a traveling block 311, a traveling motor 312, and a traveling screw 313. The traveling screw 313 is rotatably mounted on the frame 1 along its length. The traveling motor 312 is fixedly mounted on the side wall at the lower end of the frame 1, and its output shaft is coaxially connected to one end of the traveling screw 313. The traveling block 311 is slidably mounted on the frame 1 and is threadedly connected to the traveling screw 313. The cantilever 32 is fixedly mounted on the upper end of the traveling block 311 along its length, and one end of the cantilever 32 extends toward the rotating device 2.

[0040] Reference Figure 1 and Figure 3 At least two spinning wheels 33 are mounted on the end of the cantilever 32 near the rotating device 2 via an adjusting mechanism 4, and are equidistantly mounted on the cantilever 32 along the circumferential direction of the end of the cantilever 32. The adjusting mechanism 4 includes a power assembly 41 and an adjusting assembly 42. The adjusting assembly 42 includes an adjusting screw 421 and a slider 422. At least two adjusting screws 421 and sliders 422 are provided, and each adjusting screw 421 corresponds to one spinning wheel 33, and each slider 422 also corresponds to one spinning wheel 33. The adjusting screw 421 is rotatably mounted on the end of the cantilever 32, and the axis of the adjusting screw 421 is perpendicular to the axis of the cantilever 32. The slider 422 is slidably mounted on the end of the cantilever 32, and is threadedly connected to the adjusting screw 421. The spinning wheel 33 is rotatably mounted on the side wall of the slider 422 near the rotating device 2, and the rotation axis of the spinning wheel 33 is parallel to the axis of the cantilever 32 along its length.

[0041] Reference Figure 3 The power assembly 41 includes an adjusting motor 411, an adjusting rod 412, and an adjusting gear 413. The adjusting rod 412 is rotatably mounted inside the cantilever 32 along its length, with one end extending to the adjusting screw 421 and the other end passing through the end of the cantilever 32 and the side wall of the travel block 311. The adjusting motor 411 is fixedly mounted on the side wall of the travel block 311, and its output shaft is coaxially connected to the end of the adjusting rod 412 away from the adjusting screw 421. The adjusting gear 413 is coaxially mounted on the end of the adjusting rod 412 near the adjusting screw 421. A transmission gear 414 is coaxially mounted on the end of the adjusting screw 421 near the adjusting gear 413, and the transmission gear 414 meshes with the adjusting gear 413.

[0042] Reference Figure 1 and Figure 2The traveling motor 312 drives the traveling screw 313 to rotate, which in turn causes the traveling screw 313 to move the traveling block 311 along the frame 1. This, in turn, causes the traveling block 311 to move the cantilever 32 towards the rotating device 2, so that the spinning roller 33 on the cantilever 32 can spin the workpiece 6 in the rotating device 2. (Refer to...) Figure 1 and Figure 3 When it is necessary to adjust the distance between the spinning roller 33 and the inner wall of the workpiece 6, the adjusting motor 411 drives the adjusting rod 412 to rotate, which in turn drives the adjusting gear 413 to rotate. This causes the adjusting gear 413 to drive the transmission gear 414 to rotate, which in turn drives the adjusting screw 421 to rotate. This causes the slider 422 to slide along the axis of the adjusting screw 421, which in turn causes the slider 422 to move the spinning roller 33, thereby adjusting the distance between the spinning roller 33 and the inner wall of the workpiece 6 to adjust the thickness of the spinning reduction.

[0043] Reference Figure 1 The rotating device 2 includes a rotating shaft 21, a mold 22, and a drive mechanism 23. The drive mechanism 23 includes a drive motor 231, a drive pulley 232, a transmission pulley 233, and a belt 234. The rotating shaft 21 is rotatably mounted on the frame 1, and the axis of the rotating shaft 21 is on the same straight line as the axis of the cantilever 32. The drive motor 231 is fixedly mounted on the frame 1, and the drive pulley 232 is coaxially mounted on the output shaft of the drive motor 231. The transmission pulley 233 is coaxially mounted on the end of the rotating shaft 21 away from the spinning device 3. The belt 234 connects the transmission pulley 233 and the drive pulley 232.

[0044] Reference Figure 1 and Figure 4 The rotating shaft 21 has an insertion groove 211 at one end near the spinning device 3. The insertion groove 211 is annular, and the mold 22 and the workpiece 6 are inserted into the end of the rotating shaft 21 through the insertion groove 211.

[0045] Reference Figure 4 and Figure 5A connecting mechanism 5 is installed at the insertion slot 211 of the rotating shaft 21. The connecting mechanism 5 includes a positioning component 51 and a feeding component 52. Two sets of positioning components 51 are provided, and the two sets of positioning components 51 are symmetrically arranged in the rotating shaft 21. The positioning component 51 includes a positioning frame 511, a positioning block 513 and a positioning spring 514. A positioning groove 213 is also provided in the rotating shaft 21 at the insertion slot 211. The positioning groove 213 communicates with the insertion slot 211. The positioning frame 511 is slidably installed in the positioning groove 213. The positioning block 513 is slidably installed on the positioning frame 511, and one end of the positioning block 513 extends to the insertion slot 211. The sliding axis of the positioning block 513 is perpendicular to the axis of the rotating shaft 21. A positioning inclined surface is provided on the side wall of the end of the positioning block 513 near the insertion slot 211. The positioning inclined surface is used to abut against the ends of the workpiece 6 and the mold 22. The positioning spring 514 is installed inside the positioning frame 511, with one end of the positioning spring 514 abutting against the inner wall of the positioning frame 511 and the other end abutting against the end of the positioning block 513 located inside the positioning frame 511.

[0046] Reference Figure 4 and Figure 5 The feeding assembly 52 includes a feeding rod 521, a push rod 524, and a feeding spring 525. The end of the rotating shaft 21 is also provided with a mounting groove 212, which is connected to the positioning groove 213. The feeding rod 521 is slidably installed in the mounting groove 212 of the rotating shaft 21 along the axial direction of the rotating shaft 21, and one end of the feeding rod 521 extends out of the side wall of the rotating shaft 21. The feeding rod 521 is located between the two stacked positioning frames 511. A baffle 527 is fixedly installed on the side wall of the feeding rod 521. The feeding spring 525 is installed in the mounting groove 212, and one end of the feeding spring 525 is fixedly connected to the side wall of the baffle 527, and the other end is fixedly connected to the inner wall of the mounting groove 212. An installation rod 522 is fixedly installed on the side wall of the feeding rod 521 near the positioning frame 511. A push block 523 is fixedly installed at the end of the installation rod 522. The axis of the push block 523 is parallel to the axis of the feeding rod 521, and a compression slope is provided at the end of the push block 523 near the positioning frame 511. A guide rod 515 is fixedly installed on the side wall of the positioning block 513. The axis of the guide rod 515 is perpendicular to the axis of the push block 523, and the compression slope is used to abut against the guide rod 515.

[0047] Reference Figure 4 and Figure 5 A sliding rod 512 is fixedly installed on the bottom wall of the positioning frame 511 near the end of the feeding rod 521. A compression groove 5211 is provided on the side wall of the feeding rod 521 near the positioning frame 511. The bottom wall of the groove at the end of the compression groove 5211 is connected to the side wall of the feeding rod 521 by a guide slope, and the sliding rod 512 slides along the side wall of the feeding rod 521.

[0048] Reference Figure 4 and Figure 5 A deflection groove 214 is also provided at the end of the rotating shaft 21 near the insertion groove 211. One end of the deflection groove 214 is connected to the mounting groove 212, and the other end is connected to the insertion groove 211. The push rod 524 is rotatably installed in the deflection groove 214, and one end of the push rod 524 extends to the mounting groove 212. The end of the push rod 524 located in the mounting groove 212 is used to abut against the end of the unloading rod 521. The other end of the push rod 524 extends to the insertion groove 211, and the end of the push rod 524 located in the insertion groove 211 is provided with a bent portion 5241. The bent portion 5241 extends towards the insertion groove 211 and is used to abut against the mold 22 and the workpiece 6 inserted in the insertion groove 211. A return spring 526 is also installed inside the deflection groove 214. One end of the return spring 526 abuts against the inner wall of the deflection groove 214, and the other end abuts against the side wall of the push rod 524 away from the feed rod 521.

[0049] Reference Figure 5 and Figure 6 A top plate 321 is fixedly installed at the end of the cantilever 32 away from the traveling block 311. The top plate 321 is used to abut against the end of the feed rod 521 located outside the mounting groove 212.

[0050] Reference Figure 6 and Figure 7 When spinning is required on workpiece 6, the cantilever 32 drives the spinning wheel 33 to move into workpiece 6. Then, the distance between the spinning wheel 33 and the inner wall of workpiece 6 is adjusted, and spinning begins. During spinning, the rotating shaft 21 drives the mold 22 and workpiece 6 to rotate, and the cantilever 32 drives the spinning wheel 33 to move horizontally in the direction of the rotating shaft 21, so that the spinning wheel 33 spins the workpiece 6. This causes the spun workpiece 6 to extend away from the rotating shaft 21 within the mold 22, thereby achieving the spinning process on workpiece 6.

[0051] Reference Figure 5 When the mold 22 and the workpiece 6 are inserted into the insertion slot 211, the ends of the mold 22 and the workpiece 6 abut against the positioning slope of the positioning block 513, thereby pushing the positioning block 513 into the positioning frame 511 and compressing the positioning spring 514, so that the mold 22 and the workpiece 6 can be smoothly inserted into the insertion slot 211. At this time, the end of the slide rod 512 on the positioning frame 511 abuts against the side wall of the unloading rod 521, thereby keeping the positioning frame 511 stationary, and applying pressure to the positioning block 513 through the positioning spring 514 in a compressed state, so that the end of the positioning block 513 abuts against the inner wall of the workpiece 6, so that the workpiece 6 and the mold 22 can rotate synchronously with the rotating shaft 21.

[0052] Reference Figure 5 and Figure 6After the spinning operation is completed, the drive arm 32 continues to move towards the rotating shaft 21, causing the top plate 321 on the arm 32 to abut against the feed rod 521. This causes the feed rod 521 to move into the mounting groove 212 and stretch the feed spring 525. The side wall of the feed rod 521 slides along the end of the slide rod 512 on the positioning frame 511, causing the slide rod 512 to slide into the compression groove 5211 of the feed rod 521. Under the action of the positioning spring 514 in the compressed state, the positioning frame 511 moves towards the feed rod 521, causing the slide rod 512 to press against the bottom wall of the compression groove 5211, and causing the positioning spring 514 to gradually return to a relaxed state. As the feeding rod 521 continues to move, it drives the push block 523 to move until the compression slope of the push block 523 abuts against the guide rod 515, and the guide rod 515 slides along the compression slope of the push block 523 towards the feeding rod 521. This causes the guide rod 515 to pull the positioning block 513 towards the positioning frame 511 and compress the positioning spring 514 again, thereby separating the positioning block 513 from the inner wall of the workpiece 6 and releasing the top wall of the inner wall of the workpiece 6. As the slide bar 512 on the positioning frame 511 slides from the side wall of the unloading rod 521 to the bottom wall of the compression groove 5211, the positioning frame 511 moves a distance towards the unloading rod 521 under the action of the positioning spring 514, so that the positioning spring 514 is no longer tense. This allows the positioning block 513 to press the positioning spring 514 again by pulling the guide rod 515 when the push block 523 abuts against the guide rod 515, thus facilitating the separation of the positioning block 513 from the workpiece 6.

[0053] Reference Figure 5 and Figure 6 After the positioning block 513 separates from the inner wall of the workpiece 6, the unloading rod 521 continues to move until it abuts against one end of the push rod 524, thereby driving the push rod 524 to rotate and compress the return spring 526, so that the bent part 5241 at the other end of the push rod 524 abuts against the workpiece 6 and the mold 22, thereby pushing the workpiece 6 and the mold 22 away from the insertion slot 211, thus facilitating the unloading of the mold 22 and the workpiece 6.

[0054] The working principle of this embodiment is as follows: the mold 22 and the cylindrical workpiece 6 to be processed are inserted together into the insertion slot 211 of the rotating shaft 21, and the workpiece 6 is located inside the mold 22, so that the ends of the mold 22 and the workpiece 6 abut against the positioning slope of the positioning block 513, thereby pushing the positioning block 513 into the positioning frame 511 and compressing the positioning spring 514. After the mold 22 and the workpiece 6 are fully inserted into the insertion slot 211, the end of the positioning block 513 abuts against the inner wall of the workpiece 6 under the action of the positioning spring 514, thereby facilitating the synchronous rotation of the workpiece 6 and the mold 22 by friction when the rotating shaft 21 rotates.

[0055] Next, the drive motor 231 drives the drive pulley 232 to rotate, which in turn drives the transmission pulley 233 to rotate via the belt 234, thereby driving the rotating shaft 21 to rotate, which in turn drives the mold 22 and the workpiece 6 to rotate.

[0056] Then, the traveling motor 312 drives the traveling screw 313 to rotate, thereby moving the traveling block 311 towards the rotating shaft 21, which in turn moves the cantilever 32 towards the workpiece 6, thus moving the spinning roller 33 on the cantilever 32 to the inner wall of the workpiece 6. Next, the adjusting motor 411 drives the adjusting rod 412 to rotate, causing the adjusting rod 412 to drive the adjusting gear 413 to rotate, which in turn drives the transmission gear 414 to rotate, which in turn drives the adjusting screw 421 to rotate, causing the slider 422 to move along the adjusting screw 421. This causes the slider 422 to move the spinning roller 33 towards the inner wall of the workpiece 6, thereby spinning and thinning the workpiece 6. Furthermore, because at least two spinning rollers 33 on the cantilever 32 are equidistantly distributed circumferentially at the ends of the cantilever 32, the mold 22 can be subjected to balanced force when the spinning rollers 33 spin and thin the workpiece 6, thus improving the spinning effect on the cylindrical workpiece 6.

[0057] After the workpiece 6 is spun, the spinning wheel 33 is moved away from the inner wall of the workpiece 6 by adjusting the spinning wheel 33, so that the spinning wheel 33 is separated from the inner wall of the workpiece 6. The cantilever 32 is then driven to move towards the rotating shaft 21, so that the top plate 321 at the end of the cantilever 32 abuts against the unloading rod 521, and pushes the unloading rod 521 into the mounting groove 212 and stretches the unloading spring 525. This causes the slide rod 512 on the positioning frame 511 to slide along the side wall of the unloading rod 521 into the compression groove 5211, so that the positioning frame 511 moves towards the unloading rod 521 under the action of the positioning spring 514, and the positioning spring 514 releases a certain elastic force. Then, when the push block 523 moves with the unloading rod 521 to abut the guide rod 515, the guide rod 515 slides along the compression slope of the push block 523, thereby pulling the positioning block 513 to move towards the unloading rod 521, thereby compressing the positioning spring 514 again, thus separating the positioning block 513 from the inner wall of the workpiece 6, thereby releasing the positioning of the workpiece 6. Then the unloading rod 521 continues to move to abut the push rod 524, thereby driving the push rod 524 to rotate and compress the return spring 526, so that the bent part 5241 at the other end of the push rod 524 abuts the end of the mold 22 and the workpiece 6, and pushes the workpiece 6 and the mold 22 away from the rotation axis 21, thereby facilitating the unloading of the mold 22 and the workpiece 6.

[0058] This application also discloses a method for circumferential reverse spinning forming of a cylindrical part, including the following steps: Loading: Insert the workpiece 6 and the mold 22 into the end of the rotating shaft 21, so that the ends of the mold 22 and the workpiece 6 abut against the positioning slope of the positioning block 513, thereby compressing the positioning spring 514 by the positioning block 513, so that the end of the positioning block 513 abuts against the inner wall of the workpiece 6, thereby positioning the workpiece 6 and the mold 22.

[0059] Spinning is performed by driving the rotating shaft 21 to rotate via the drive mechanism 23, thereby causing the mold 22 and workpiece 6 at the end of the rotating shaft 21 to rotate. The cantilever 32 is moved by the traveling mechanism 31, so that the spinning roller 33 on the cantilever 32 extends into the workpiece 6. The spinning roller 33 is adjusted by driving the adjusting rod 412 to rotate via the adjusting motor 411, thereby driving the adjusting gear 413 to rotate, which in turn drives the transmission gear 414 to rotate, which in turn drives the adjusting screw 421 to rotate. This causes the adjusting screw 421 to move the slider 422 along the axis of the adjusting screw 421, thereby adjusting the distance between the spinning roller 33 and the inner wall of the workpiece 6, so as to facilitate the spinning and thinning of the workpiece 6 by at least two spinning rollers 33.

[0060] After unlocking and spinning, the power component 41 drives the adjustment component 42 to move the spinning wheel 33 away from the inner wall of the workpiece 6, thus separating the spinning wheel 33 from the workpiece 6. Then, the traveling mechanism 31 drives the cantilever 32 to continue moving towards the rotating shaft 21, causing the top plate 321 at the end of the cantilever 32 to abut against the feed rod 521, thus moving the feed rod 521 into the rotating shaft 21. This causes the slide rod 512 on the positioning frame 511 to move along the side wall of the feed rod 521 to the compression groove 5211, causing the positioning spring 514 to release a certain elastic force. Then, the compression slope of the push block 523 abuts against the guide rod 515, causing the guide rod 515 to drive the positioning block 513 to compress the positioning spring 514 again, thus separating the positioning block 513 from the inner wall of the workpiece 6, thereby unlocking the workpiece 6.

[0061] During the unloading process, after the positioning block 513 separates from the workpiece 6, the traveling mechanism 31 continues to drive the cantilever 32 to push the unloading rod 521 into the mounting groove 212, so that the end of the unloading rod 521 abuts against one end of the push rod 524, thereby causing the push rod 524 to rotate and compress the return spring 526, so that the bent part 5241 at the other end of the push rod 524 pushes the mold 22 and the workpiece 6 away from the insertion groove 211, thereby removing the spun workpiece 6 and the mold 22 from the rotating shaft 21.

[0062] The above are preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made to the structure, shape and principle of this application should be included within the scope of protection of this application.

Claims

1. A cylindrical part inner circumferential reverse spinning forming device, comprising a frame (1), characterized in that: The frame (1) is equipped with a rotating device (2) and a spinning device (3). The rotating device (2) includes a rotating shaft (21), a driving mechanism (23), and a mold (22). The mold (22) is used to place the workpiece (6). The rotating shaft (21) and the driving mechanism (23) are mounted on the frame (1). The driving mechanism (23) is connected to the rotating shaft (21). The mold (22) is mounted on the rotating shaft (21). The spinning device (3) includes a traveling mechanism (31), a cantilever (32), and at least two... At least two spinning rollers (33) are mounted on the frame (1), the traveling mechanism (31) is mounted on the traveling mechanism (31), and one end of the cantilever (32) extends toward the rotation axis (21). At least two spinning rollers (33) are mounted on the cantilever (32) at one end near the rotation axis (21), and at least two spinning rollers (33) are equidistantly mounted along the circumferential direction of the end of the cantilever (32). The spinning rollers (33) are used to spin the workpiece (6) installed in the mold (22).

2. The cylindrical part inner circumferential reverse spinning forming equipment according to claim 1, characterized in that: An adjustment mechanism (4) for adjusting the distance between the spinning wheel (33) and the inner wall of the mold (22) is installed on the cantilever (32). The adjustment mechanism (4) includes a power component (41) and an adjustment component (42). The adjustment component (42) includes an adjustment screw (421) and a slider (422). The adjustment screw (421) is rotatably installed at the end of the cantilever (32) near the mold (22), and the axis of the adjustment screw (421) is perpendicular to the axis of the cantilever (32). The slider (422) is slidably installed on the cantilever (32), and the slider (422) is threadedly connected to the adjustment screw (421). The spinning wheel (33) is installed on the slider (422). The power component (41) is installed on the cantilever (32), and the power component (41) is connected to the adjustment screw (421).

3. The cylindrical part inner circumferential reverse spinning forming equipment according to claim 2, characterized in that: The power assembly (41) includes an adjusting motor (411), an adjusting rod (412), and an adjusting gear (413). The adjusting motor (411) is mounted on the cantilever (32). The adjusting rod (412) is rotatably mounted on the cantilever (32), and the axis of the adjusting rod (412) is parallel to the axis of the cantilever (32) along its length. The adjusting rod (412) is connected to the output shaft of the adjusting motor (411). The adjusting gear (413) is coaxially mounted on the end of the adjusting rod (412) away from the adjusting motor (411). A transmission gear (414) is mounted on the end of the adjusting screw (421), and the transmission gear (414) meshes with the adjusting gear (413).

4. The cylindrical part inner circumferential reverse spinning forming equipment according to claim 1, characterized in that: A connecting mechanism (5) is also provided on the rotating shaft (21) at the connection point with the mold (22). The connecting mechanism (5) includes a positioning component (51) and a feeding component (52). The positioning component (51) includes a positioning frame (511), a positioning block (513), and a positioning spring (514). The end of the rotating shaft (21) is provided with an insertion groove (211) for the mold (22) and the workpiece (6) to be inserted. The end of the rotating shaft (21) is also provided with a positioning groove (213), which communicates with the insertion groove (211). The positioning frame (511) The positioning block (513) is installed in the positioning groove (213). The positioning block (513) is slidably installed on the positioning frame (511). The positioning spring (514) is installed on the positioning frame (511). One end of the positioning spring (514) is connected to the side wall of the positioning frame (511), and the other end is connected to the side wall of the positioning block (513). The end of the positioning block (513) away from the positioning spring (514) extends into the insertion groove (211), and the end of the positioning block (513) away from the positioning spring (514) is used to abut against the inner wall of the workpiece (6). The positioning block (513) is connected to the unloading assembly (52).

5. The cylindrical part inner circumferential reverse spinning forming equipment according to claim 4, characterized in that: The feeding assembly (52) includes a feeding rod (521), a push rod (524), and a feeding spring (525). The end of the rotating shaft (21) is also provided with a mounting groove (212), which communicates with the positioning groove (213). The feeding rod (521) is slidably installed in the mounting groove (212) along the axial direction of the rotating shaft (21), and the axis of the feeding rod (521) is perpendicular to the axis of the positioning block (513). One end of the feeding rod (521) extends outward from the rotating shaft. (21) end, and the end of the feed rod (521) located outside the mounting groove (212) is used to abut against the cantilever (32), a push block (523) is installed on the side wall of the feed rod (521), the axis of the push block (523) is parallel to the axis of the feed rod (521), the push block (523) has a compression slope on the side near the side wall of the feed rod (521), a guide rod (515) is installed on the side wall of the positioning block (513), the guide rod (515) is used to interact with the push block (523). The compression inclined plane abuts, the feeding spring (525) is installed in the mounting groove (212), one end of the feeding spring (525) is connected to the side wall of the feeding rod (521), and the other end is connected to the inner wall of the mounting groove (212). The rotating shaft (21) is also provided with a deflection groove (214), one end of the deflection groove (214) is connected to the insertion groove (211), and the other end is connected to the mounting groove (212). The push rod (524) is rotatably installed in the deflection groove (214), and the push rod (525) is rotatably installed in the deflection groove (214). 4) One end extends to the insertion slot (211), and the end of the push rod (524) located at the insertion slot (211) is used to abut against the mold (22) and the workpiece (6). The other end of the push rod (524) extends to the mounting slot (212), and the other end of the push rod (524) is used to abut against the end of the unloading rod (521). A return spring (526) is also installed inside the deflector. One end of the return spring (526) is connected to the inner wall of the deflector, and the other end is connected to the side wall of the push rod (524).

6. The cylindrical part inner circumferential reverse spinning forming equipment according to claim 5, characterized in that: A compression groove (5211) is provided on the side wall of the feeding rod (521) near the positioning frame (511). The side wall of the compression groove (5211) is used to abut against the end of the positioning frame (511) away from the positioning block (513).

7. The cylindrical part inner circumferential reverse spinning forming equipment according to claim 5, characterized in that: The cantilever (32) has a top plate (321) at one end near the rotating shaft (21), and the top plate (321) is used to abut against the end of the feed rod (521) located outside the mounting groove (212) of the rotating shaft (21).

8. A method for forming a cylindrical part by reverse spinning in the inner circumferential direction, based on the equipment for forming a cylindrical part by reverse spinning in the inner circumferential direction according to any one of claims 1-7, characterized in that, Includes the following steps: Loading: Insert the workpiece (6) and mold (22) into the end of the rotating shaft (21), and position the workpiece (6) and mold (22) by the positioning component (51); Spinning: drive the mold (22) and workpiece (6) on the rotating shaft (21) to rotate, move the cantilever (32) so that the spinning wheels (33) on the cantilever (32) extend into the workpiece (6) and spin the workpiece (6) through at least two spinning wheels (33); The workpiece (6) and mold (22) after spinning are removed from the rotating shaft (21).

9. A method for forming a cylindrical part by reverse circumferential spinning on the inner side according to claim 8, characterized in that: The spinning step also includes adjusting the spinning wheel (33). The power component (41) drives the adjustment component (42) to operate, so that the adjustment component (42) drives the spinning wheel (33) to move, thereby adjusting the distance between the spinning wheel (33) and the inner wall of the workpiece (6).

10. A method for forming a cylindrical part by reverse circumferential spinning on the inner side according to claim 8, characterized in that: The material feeding step and the spinning step also include unlocking, using the top plate (321) on the cantilever (32) to drive the material feeding component (52) to move, so that the material feeding component (52) drives the positioning component (51) to move, so that the positioning component (51) unlocks the mold (22) and the workpiece (6).

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