A spinning forming device for machining mechanical parts

Abstract

The present invention relates to the technical field of mechanical parts processing, specifically to a spinning forming device for mechanical parts processing, including a base, a limited slide rail is provided on the upper end surface of the base, a support slide is slidably installed in the limited slide rail, and a fixing mechanism is provided on the base and the support slide. The spinning processing of metal pipe fittings is completed by adopting an integrated operation model of clamping, symmetrical spinning and pre-support. Clamping ensures that the pipe fittings will not move or vibrate during the spinning process. Symmetrical spinning and pre-support further ensure the stability of the processing process, so that the pipe fittings maintain the correct position and shape during the entire processing process. Pre-support and symmetrical spinning can better control the flow and deformation of the material, reduce the stress inside the material, avoid excessive deformation or tearing, and reduce the elastic deformation of the pipe fittings during the processing, ensuring the geometric shape and dimensional accuracy of the pipe fittings.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical parts processing, in particular to a spin forming device for mechanical parts processing. Background Art

[0002] CNC machine tool spinning technology is an advanced metal plastic forming technology, which is often used to make hollow rotating metal parts. It is widely used in aerospace, automobile manufacturing, petrochemical and other fields. This technology uses the relative movement between the rotating mold and the workpiece, and utilizes local loading force to gradually deform the metal pipe, and finally forms the required complex geometric shape to meet the needs of aerospace, automobile, mechanical structure and other industries for complex components.

[0003] At present, there are the following disadvantages in the processing and spinning of mechanical parts: 1. When processing and spinning metal pipes, usually only a single-sided spinning wheel is used to spin the rotating metal pipes, and single-sided spinning may cause inconsistent deformation of the pipes, resulting in asymmetric shapes. At the same time, since the spinning force only comes from one side, it is difficult to accurately control the size and shape of the pipes, thereby affecting the processing accuracy and final quality of the metal pipes; 2. When the spinning wheel extrude the metal pipes, the internal center of the metal pipes is always in a non-contact state, which causes stress concentration inside the pipes during the processing, and single-sided spinning will also produce a large stress concentration on one side of the pipes, resulting in microcracks or deformation inside the metal pipes after processing, thereby affecting the appearance and quality of the products. Summary of the invention

[0004] In order to solve the above-mentioned technical problems, the present invention provides a spin forming device for machining mechanical parts, which is achieved by the following specific technical means: a spin forming device for machining mechanical parts, comprising a base, a limiting slide rail being provided on the upper end surface of the base, a supporting slide seat being slidably installed in the limiting slide rail, and a fixing mechanism being jointly provided on the base and the supporting slide seat; the fixing mechanism comprises a driving part jointly provided on the base and the supporting slide seat and used for rotating the metal pipe fitting, a clamping part provided on the supporting slide seat and used for clamping and fixing the metal pipe fitting, and a locking part for locking the supporting slide seat on the base.

[0005] The limiting slide rail is provided with an extrusion mechanism for cooperating with the fixing mechanism to perform symmetrical spinning on the metal pipe fittings; the extrusion mechanism includes a matching part arranged on the base and cooperating with the driving part, the matching part is provided with a moving part for adjusting the spinning distance, and the moving part is provided with a spinning part.

[0006] A supporting mechanism is arranged on the limiting slide rail, which cooperates with the extrusion mechanism and is used to pre-support the inside of the metal pipe during the spinning process; the supporting mechanism includes a supporting part arranged on the limiting slide rail and used to assist the spinning part in stabilizing the spinning, a positioning part for determining the pre-support position is arranged on the supporting part, and an internal supporting part is arranged on the positioning part.

[0007] As a preferred technical solution of the present invention, the driving part includes a clamping cylinder, a mating shaft, a first motor, a spline sleeve and a spline shaft. A clamping cylinder with a cavity inside is installed in the support slide through a bearing, and a first gear is provided on the outer ring wall fixed sleeve at the left end of the clamping cylinder. A mating shaft is installed on the left end face of the support slide through a bearing, and a second gear meshing with the first gear is provided on the fixed sleeve on the mating shaft. A first motor whose output end is fixedly connected to the mating shaft is fixedly installed on the support slide through a motor seat. A spline sleeve is rotatably installed on the rear end face of the support slide through a bearing seat, and a third gear meshing with the second gear is provided on the outer ring wall fixed sleeve of the spline sleeve. A spline shaft slidably connected to the spline sleeve is rotatably installed on the upper end face of the base through a bearing seat.

[0008] As a preferred technical solution of the present invention, the clamping part includes a first slideway, a first screw rod, a clamping slider, a bevel gear ring and a rotating rod. The right end surface of the clamping cylinder is penetrated by a plurality of first slideways in a circular array. A first screw rod corresponding to the first slideway is rotatably installed in the clamping cylinder through a bearing seat. A first bevel gear is fixedly sleeved at one end of the first screw rod away from each other. A clamping slider threadedly connected to the corresponding first screw rod is slidably installed in the first slideway. A bevel gear ring is installed in the clamping cylinder through a bearing. The bevel gear ring is meshed with a plurality of first bevel gears at the same time. A rotating rod is installed through a bearing on the outer ring wall of the clamping cylinder. A second bevel gear meshed with the bevel gear ring is fixedly sleeved on the rotating rod.

[0009] As a preferred technical solution of the present invention, the locking part includes a connecting seat, a spring slide rod, a U-shaped connecting rod and a locking hole. The right end face of the supporting slide seat is fixedly installed with a front-to-back symmetrical connecting seat, a spring slide rod is slidably installed in the connecting seat, a U-shaped connecting rod is fixedly installed on the upper ends of the front-to-back symmetrical spring slide rods, and a locking hole corresponding to the spring slide rod is opened on the base.

[0010] As a preferred technical solution of the present invention, the mating part includes a second screw rod and a transmission belt. The upper end surface of the base is rotatably mounted with a second screw rod that is symmetrical in front and back through a bearing seat. The second screw rod located on the rear side is fixedly connected to the spline shaft, and the right end of the second screw rod that is symmetrical in front and back is connected via a transmission belt.

[0011] As a preferred technical solution of the present invention, the moving part includes a spin-formed slide, a second slide, a bidirectional screw and a second motor. A spin-formed slide located on the right side of the supporting slide is slidably installed on the limiting slide rail. The spin-formed slide is threadedly connected to the second screw rod symmetrical front and back. A second slide is provided on the upper end surface of the spin-formed slide. A bidirectional screw is installed in the second slide through a bearing. A second motor whose output end is fixedly connected to the bidirectional screw is fixedly installed on the spin-formed slide.

[0012] As a preferred technical solution of the present invention, the spinning part includes a spinning slider, a support seat and a spinning wheel. A spinning slider is slidably installed on the second slideway, which is symmetrical front and back and threadedly connected to the bidirectional screw. The side walls of the spinning sliders close to each other are fixedly installed with support seats, and the spinning wheel is installed on the support seat through a bearing.

[0013] As a preferred technical solution of the present invention, the supporting part includes a connecting rod, a third slide, a first slide and a second slide. The connecting rod is fixedly installed on the right end face of the spinning slide, and the third slide located on the right side of the spinning slide is slidably installed on the limiting slide rail. The third slide is provided with sliding holes distributed up and down through the front and back. The first slide that is slidably connected to the sliding hole below is fixedly installed on the connecting rod on the rear side, and the second slide that is slidably connected to the sliding hole above is fixedly installed on the connecting rod on the front side.

[0014] As a preferred technical solution of the present invention, the positioning part includes a positioning rod and an alignment cylinder, the positioning rod is fixedly installed on the left end surface of the third slide, and the alignment cylinder cooperating with the positioning rod is installed at the center of the right end surface of the clamping cylinder through a bearing.

[0015] As a preferred technical solution of the present invention, the inner support portion includes a barrier tube, and the barrier tube is slidably sleeved on the positioning rod, and the outer diameter of the barrier tube is the same as the inner diameter of the minimum diameter section of the metal pipe after molding.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The spinning forming device for machining mechanical parts, through the coordinated use of the fixing mechanism, the extrusion mechanism and the supporting mechanism, adopts an integrated operation model of clamping, fixing, symmetrical spinning and pre-support to complete the spinning processing of metal pipe fittings. The clamping and fixing ensure that the pipe fittings will not move or vibrate during the spinning process. The symmetrical spinning and pre-support further ensure the stability of the processing process, so that the pipe fittings maintain the correct position and shape during the entire processing process. In addition, the pre-support and symmetrical spinning can better control the flow and deformation of the material, reduce the stress inside the material, avoid excessive deformation or tearing, and at the same time reduce the elastic deformation of the pipe fittings during the processing, ensuring the geometric shape and dimensional accuracy of the pipe fittings.

[0017] 2. The spinning forming device for machining mechanical parts adopts a symmetrical spinning method to process metal pipes by setting an extrusion mechanism, ensuring that the metal pipes are subjected to uniform force during the entire machining process, making the deformation of the pipes more uniform, thereby obtaining better size and shape accuracy. In addition, symmetrical spinning helps to improve the stability of the pipes during the spinning process and reduce machining errors caused by vibration or deviation of the pipes.

[0018] 3. The spinning forming device for machining mechanical parts pre-supports the inside of the metal pipe during the spinning process by setting up an extrusion mechanism and a supporting mechanism for mutual use, so as to prevent the pipe from bending or vibrating during the spinning process. The spinning wheels on both sides can also be auxiliary supported to further ensure the stability of the pipe during the entire processing process. The pre-support and auxiliary support can more evenly distribute the spinning force, so that the deformation of the pipe is more uniform, reducing the uneven deformation caused by excessive local pressure, and reducing the stress inside the pipe to avoid cracks or deformation caused by stress concentration. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention when it is working.

[0020] Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention.

[0021] Figure 3 It is a partially cutaway three-dimensional structural schematic diagram of the fixing mechanism of the present invention.

[0022] Figure 4 It is a schematic diagram of a partial cross-sectional three-dimensional structure of the clamping portion of the present invention.

[0023] Figure 5 It is a three-dimensional structural schematic diagram of the extrusion mechanism and the supporting mechanism of the present invention.

[0024] Figure 6 This is a diagram showing the changes of metal pipes before and after processing.

[0025] In the figure: 1, base; 2, limit slide rail; 3, support slide seat; 4, fixing mechanism; 41, driving part; 411, clamping cylinder; 412, matching shaft rod; 413, first motor; 414, spline sleeve; 415, spline shaft; 42, clamping part; 421, first slideway; 422, first screw rod; 423, clamping slider; 424, bevel gear ring; 425, rotating rod; 43, locking part; 431, connecting seat; 432, spring slide rod; 433, U-shaped connecting rod; 434, locking hole; 5, extrusion mechanism; 51, matching part ; 511, second screw rod; 512, transmission belt; 52, moving part; 521, spinning slide; 522, second slide; 523, bidirectional screw; 524, second motor; 53, spinning part; 531, spinning slider; 532, supporting seat; 533, spinning wheel; 6, supporting mechanism; 61, supporting part; 611, connecting rod; 612, third slide; 613, first slide; 614, second slide; 62, positioning part; 621, positioning rod; 622, alignment cylinder; 63, inner support part; 631, barrier cylinder. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] See also Figure 1 A spin forming device for machining mechanical parts comprises a base 1, a limiting slide rail 2 is provided on the upper end surface of the base 1, a supporting slide seat 3 is slidably installed in the limiting slide rail 2, and a fixing mechanism 4 is jointly provided on the base 1 and the supporting slide seat 3; the fixing mechanism 4 comprises a driving part 41 jointly provided on the base 1 and the supporting slide seat 3 and used for rotating a metal pipe fitting, a clamping part 42 provided on the supporting slide seat 3 and used for clamping and fixing the metal pipe fitting, and a locking part 43 used for locking the supporting slide seat 3 on the base 1.

[0028] See also Figure 1 The limiting slide rail 2 is provided with an extrusion mechanism 5 for cooperating with the fixing mechanism 4 to perform symmetrical spinning on the metal pipe fitting; the extrusion mechanism 5 includes a matching portion 51 arranged on the base 1 and cooperating with the driving portion 41, and a moving portion 52 for adjusting the spinning distance is provided on the matching portion 51, and a spinning portion 53 is provided on the moving portion 52.

[0029] See also Figure 1A supporting mechanism 6 is provided on the limiting slide rail 2, which cooperates with the extrusion mechanism 5 and is used to pre-support the inside of the metal pipe during the spinning process; the supporting mechanism 6 includes a supporting portion 61 provided on the limiting slide rail 2 and used to assist the spinning portion 53 in stabilizing the spinning, and a positioning portion 62 for determining the pre-support position is provided on the supporting portion 61, and an inner supporting portion 63 is provided on the positioning portion 62.

[0030] See also Figure 1 , Figure 2 and Figure 3 The driving part 41 includes a clamping cylinder 411, a matching shaft rod 412, a first motor 413, a spline sleeve 414 and a spline shaft 415. A clamping cylinder 411 with a cavity inside is installed in the support slide 3 through a bearing, and a first gear is fixedly sleeved on the outer ring wall of the left end of the clamping cylinder 411. A matching shaft rod 412 is installed on the left end face of the support slide 3 through a bearing, and a second gear meshing with the first gear is fixedly sleeved on the matching shaft rod 412. A first motor 413 fixedly connected to the output end of the matching shaft rod 412 is fixedly installed on the support slide 3 through a motor seat provided, a spline sleeve 414 is rotatably installed on the rear end face of the support slide 3 through a bearing seat, and a third gear meshing with the second gear is fixedly sleeved on the outer ring wall of the spline sleeve 414, and a spline shaft 415 slidably connected to the spline sleeve 414 is rotatably installed on the upper end face of the base 1 through a bearing seat provided.

[0031] See also Figure 1 , Figure 3 and Figure 4 The clamping portion 42 includes a first slideway 421, a first screw rod 422, a clamping slider 423, a bevel gear ring 424 and a rotating rod 425. A plurality of first slideways 421 are penetrated through the right end surface of the clamping cylinder 411 in a circular array. A first screw rod 422 corresponding to the first slideway 421 is rotatably installed in the clamping cylinder 411 through a bearing seat. A first bevel gear is fixedly sleeved at one end of the first screw rod 422 away from each other. A clamping slider 423 threadedly connected to the corresponding first screw rod 422 is slidably installed in the first slideway 421. A bevel gear ring 424 is installed in the clamping cylinder 411 through a bearing. The bevel gear ring 424 is meshed with a plurality of first bevel gears at the same time. A rotating rod 425 is penetrated through the outer ring wall of the clamping cylinder 411 through a bearing. A second bevel gear meshed with the bevel gear ring 424 is fixedly sleeved on the rotating rod 425.

[0032] See also Figure 1 , Figure 3 and Figure 5The locking portion 43 includes a connecting seat 431, a spring slide bar 432, a U-shaped connecting rod 433 and a locking hole 434. The right end surface of the supporting slide 3 is fixedly installed with a front-to-back symmetrical connecting seat 431, a spring slide bar 432 is slidably installed in the connecting seat 431, and a U-shaped connecting rod 433 is fixedly installed on the upper ends of the front-to-back symmetrical spring slide bars 432. A locking hole 434 corresponding to the spring slide bar 432 is opened on the base 1.

[0033] During specific work, when it is necessary to perform spinning processing on the metal pipe fitting, the supporting slide 3 is at the leftmost side of the limiting slide rail 2, and the spring slide rod 432 is not inserted into the lock hole 434. Then the worker places the prepared metal pipe fitting between several clamping slide blocks 423, and then uses a handheld electric rotating tool to rotate the rotating rod 425 to rotate the bevel gear ring 424 through the second bevel gear, and the bevel gear ring 424 will synchronously rotate the first screw rod 422 through the first bevel gear, thereby driving several clamping slide blocks 423 to approach the metal pipe fitting synchronously, until the clamping slide blocks 423 are simultaneously pressed against the inner ring wall of the metal pipe fitting, thereby completing the clamping and fixation of the metal pipe fitting.

[0034] Then, the support slide 3 clamping the metal pipe is pushed to the right until the spring slide 432 moves to above the locking hole 434. The spring slide 432 is inserted into the locking hole 434 under the action of elastic force, thereby fixing the support slide 3 on the base 1. At this time, the metal pipe is in a position to be processed. During the movement of the support slide 3, the spline sleeve 414 can slide left and right on the spline shaft 415 with the support slide 3.

[0035] See also Figure 1 , Figure 2 and Figure 5 The mating part 51 includes a second screw rod 511 and a transmission belt 512. The upper end surface of the base 1 is rotatably mounted with a front-to-back symmetrical second screw rod 511 through a bearing seat. The second screw rod 511 located on the rear side is fixedly connected to the spline shaft 415. The right end of the front-to-back symmetrical second screw rod 511 is connected for transmission via a transmission belt 512.

[0036] See also Figure 1 and Figure 5 The moving part 52 includes a spinning slide 521, a second slide 522, a bidirectional screw 523 and a second motor 524. The spinning slide 521 located on the right side of the supporting slide 3 is slidably installed on the limiting slide rail 2. The spinning slide 521 is threadedly connected with the second screw 511 symmetrical in front and back. The upper end surface of the spinning slide 521 is provided with a second slide 522. The bidirectional screw 523 is installed in the second slide 522 through a bearing. The second motor 524 whose output end is fixedly connected to the bidirectional screw 523 is fixedly installed on the spinning slide 521.

[0037] See also Figure 1 , Figure 5 and Figure 6 The spinning part 53 includes a spinning slider 531, a support seat 532 and a spinning wheel 533. The second slideway 522 is slidably installed with a spinning slider 531 that is symmetrical front and back and threadedly connected to the bidirectional screw 523. The side walls of the spinning sliders 531 that are close to each other are fixedly installed with support seats 532, and the spinning wheel 533 is installed on the support seat 532 through a bearing.

[0038] During specific operation, after the fixing mechanism 4 moves the metal pipe to the processing position, the first motor 413 is started to rotate the matching shaft 412, and the matching shaft 412 will rotate the clamping cylinder 411 through the cooperation of the first gear and the second gear. At this time, the clamping cylinder 411 will rotate with the clamped metal pipe. At the same time, the matching shaft 412 will rotate the spline sleeve 414 through the cooperation of the second gear and the third gear. The spline sleeve 414 will rotate the second screw rod 511 on the rear side by rotating the spline shaft 415, and the second screw rods 511 on both sides will rotate synchronously with the cooperation of the transmission belt 512, so that the spinning slide 521 can be slowly moved to the right during the rotation of the metal pipe.

[0039] Then, the second motor 524 is started to rotate the bidirectional screw 523, so that the spinning sliders 531 on both sides bring the spinning wheels 533 closer to the metal pipe synchronously, so that the spinning wheels 533 on both sides contact and squeeze the metal pipe, and cooperate with the slow rightward movement of the spinning slide 521 and the rotation of the metal pipe itself, to complete the spinning processing of the metal pipe through a symmetrical spinning method, so as to ensure that the metal pipe is subjected to uniform force during the entire processing process, thereby obtaining better size and shape accuracy.

[0040] See also Figure 1 and Figure 5 The support portion 61 includes a connecting rod 611, a third slide seat 612, a first slide rod 613 and a second slide rod 614. The connecting rod 611 is fixedly installed on the right end surface of the spinning slider 531. The third slide seat 612 located on the right side of the spinning slider 521 is slidably installed on the limiting slide rail 2. The third slide seat 612 is provided with sliding holes distributed up and down. The first slide rod 613 slidably connected to the sliding hole below is fixedly installed on the connecting rod 611 located on the rear side, and the second slide rod 614 slidably connected to the sliding hole above is fixedly installed on the connecting rod 611 located on the front side.

[0041] See also Figure 1 , Figure 3 , Figure 4 and Figure 5 The positioning portion 62 includes a positioning rod 621 and an alignment cylinder 622. The positioning rod 621 is fixedly installed on the left end surface of the third slide seat 612, and the alignment cylinder 622 that cooperates with the positioning rod 621 is installed at the center of the right end surface of the clamping cylinder 411 through a bearing.

[0042] See also Figure 1 and Figure 5 The inner support portion 63 includes a barrier tube 631, and the barrier tube 631 is slidably sleeved on the positioning rod 621. The outer diameter of the barrier tube 631 is the same as the inner diameter of the minimum diameter section of the metal pipe after molding.

[0043] During specific operation, when the support slide 3 moves the fixed metal pipe to the processing position, the first motor 413 is in an unstarted state, so that the spinning slide 521 is in a fixed state. At this time, the third slide 612 is also in a fixed state under the limit of the first slide bar 613 and the second slide bar 614, and the support slide 3 brings the metal pipe close to the third slide 612, thereby driving the alignment cylinder 622 close to the positioning rod 621, so that the positioning rod 621 inserts the blocking cylinder 631 into the alignment cylinder 622. In the process of the extrusion mechanism 5 and the fixing mechanism 4 cooperating to spin the metal pipe, the blocking cylinder 631 will pre-support the inside of the metal pipe, thereby preventing the spinning wheel 533 from over-extruding the metal pipe, making the deformation of the pipe more uniform.

[0044] When the extrusion mechanism 5 spins the metal pipe, the spinning slide 521 moves slowly to the right, and the third slide 612 moves synchronously to the right under the action of the first slide bar 613 and the second slide bar 614. At this time, the spinning sliders 531 on both sides carry the spinning wheels 533 to symmetrically extrude the metal pipe. During the synchronous movement of the spinning sliders 531 on both sides, the first slide bar 613 and the second slide bar 614 slide in the sliding holes of the third slide 612, thereby limiting the horizontal movement of the spinning sliders 531 on both sides, thereby providing auxiliary support for the spinning wheels 533 on both sides to ensure the stability of the entire processing process.

[0045] After the spinning of the metal pipe is completed, the first motor 413 is stopped and the second motor 524 is started in reverse, so that the spinning wheels 533 on both sides are reset and away from the processed pipe. Then, the spring slides 432 on both sides can be moved up through the U-shaped connecting rod 433 to release the fixation of the support slide 3. Then the worker pushes the support slide 3 to the left and uses a handheld electric rotating tool to rotate the rotating rod 425 in the opposite direction to release the fixation of the metal pipe through the clamping part 42. Then, the processed metal pipe is taken out, and the blocking tube 631 is taken out from the inside of the metal pipe, and the next metal pipe spinning process can be carried out.

[0046] Figure 1-Figure 5Working principle: when the metal pipe fitting needs to be spun, the support slide 3 is at the leftmost side of the limiting slide rail 2. Then the worker places the prepared metal pipe fitting between several clamping slide blocks 423, and then uses a hand-held electric rotary tool to rotate the rotary rod 425 so that the clamping slide block 423 clamps and fixes the metal pipe fitting. Then, the support slide 3 clamping the metal pipe fitting is pushed to the right, and the support slide 3 is fixed to the base 1 through the locking part 43. At this time, the metal pipe fitting is in the position to be processed.

[0047] Then, the first motor 413 is started to cooperate with the matching part 51 through the driving part 41, so that the metal pipe is rotated and the spinning slide 521 is slowly moved to the right. Then, the second motor 524 is started to rotate the bidirectional screw 523, so that the spinning wheels 533 on both sides contact and squeeze the metal pipe, thereby completing the spinning process of the metal pipe through a symmetrical spinning method.

[0048] When the support slide 3 moves to the processing position with the fixed metal pipe, the support slide 3 brings the metal pipe close to the third slide 612, thereby driving the alignment cylinder 622 close to the positioning rod 621, so that the positioning rod 621 carries the blocking cylinder 631 and is inserted into the alignment cylinder 622. In the process of the extrusion mechanism 5 and the fixing mechanism 4 cooperating to spin the metal pipe, the blocking cylinder 631 will pre-support the inside of the metal pipe.

[0049] After the spinning of the metal pipe is completed, the first motor 413 is stopped and the second motor 524 is started in reverse, so that the spinning wheels 533 on both sides are reset and away from the processed pipe. Then, the spring slides 432 on both sides can be moved up through the U-shaped connecting rod 433 to release the fixation of the support slide 3. Then the worker pushes the support slide 3 to the left and uses a handheld electric rotating tool to rotate the rotating rod 425 in the opposite direction to release the fixation of the metal pipe through the clamping part 42. Then, the processed metal pipe is taken out, and the blocking tube 631 is taken out from the inside of the metal pipe to carry out the spinning process of the next metal pipe.

[0050] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A spinning forming device for machining mechanical parts, comprising a base (1), characterized in that: The upper end surface of the base (1) is provided with a limit slide rail (2), a support slide seat (3) is slidably installed in the limit slide rail (2), and a fixing mechanism (4) is provided on the base (1) and the support slide seat (3); The fixing mechanism (4) comprises a driving part (41) provided on the base (1) and the supporting slide (3) and used to rotate the metal pipe, a clamping part (42) provided on the supporting slide (3) and used to clamp and fix the metal pipe, and a locking part (43) used to lock the supporting slide (3) on the base (1); The limiting slide rail (2) is provided with an extrusion mechanism (5) for cooperating with the fixing mechanism (4) to perform symmetrical spinning on the metal pipe fitting; The extrusion mechanism (5) comprises a matching portion (51) arranged on the base (1) and matching with the driving portion (41), a moving portion (52) for adjusting the spinning distance is arranged on the matching portion (51), and a spinning portion (53) is arranged on the moving portion (52); The limiting slide rail (2) is provided with a supporting mechanism (6) which cooperates with the extrusion mechanism (5) and is used to pre-support the inside of the metal pipe during the spinning process; The support mechanism (6) comprises a support portion (61) arranged on the limiting slide rail (2) and used to assist the spinning portion (53) in stable spinning, a positioning portion (62) for determining a pre-support position is arranged on the support portion (61), and an inner support portion (63) is arranged on the positioning portion (62); The driving part (41) comprises a clamping cylinder (411), a matching shaft (412), a first motor (413), a spline sleeve (414) and a spline shaft (415); a clamping cylinder (411) with a cavity inside is installed in the support slide (3) through a bearing, a first gear is fixedly sleeved on the outer ring wall at the left end of the clamping cylinder (411), a matching shaft (412) is installed on the left end surface of the support slide (3) through a bearing, and a fixing sleeve on the matching shaft (412) is provided with a first gear. A second gear meshingly connected, a first motor (413) whose output end is fixedly connected to a matching shaft (412) is fixedly mounted on the support slide (3) through a motor seat provided, a spline sleeve (414) is rotatably mounted on the rear end surface of the support slide (3) through a bearing seat, a third gear meshingly connected to the second gear is fixedly sleeved on the outer ring wall of the spline sleeve (414), and a spline shaft (415) slidably connected to the spline sleeve (414) is rotatably mounted on the upper end surface of the base (1) through a bearing seat provided; The clamping portion (42) comprises a first slideway (421), a first screw rod (422), a clamping slider (423), a bevel gear ring (424) and a rotating rod (425); a plurality of first slideways (421) are penetrated through the right end surface of the clamping cylinder (411) in a circular array manner; first screw rods (422) corresponding to the first slideways (421) are rotatably installed in the clamping cylinder (411) through a bearing seat; one end of the first screw rod (422) away from each other is fixed A first bevel gear is sleeved, a clamping slide block (423) threadedly connected to the corresponding first screw rod (422) is slidably installed in the first slideway (421), a bevel gear ring (424) is installed in the clamping cylinder (411) through a bearing, and the bevel gear ring (424) is meshed with a plurality of first bevel gears at the same time, and a rotating rod (425) is installed through the bearing on the outer ring wall of the clamping cylinder (411), and a second bevel gear meshed with the bevel gear ring (424) is fixedly sleeved on the rotating rod (425); The matching part (51) includes a second screw rod (511) and a transmission belt (512); the moving part (52) includes a spinning slide (521), a second slideway (522), a bidirectional screw rod (523) and a second motor (524); a spinning slide (521) located on the right side of the supporting slide (3) is slidably installed on the limiting slide rail (2); the spinning slide (521) and the second screw rod (511) symmetrically arranged in front and rear directions are both threadedly connected; a second slideway (522) is provided on the upper end surface of the spinning slide (521); a bidirectional screw rod (523) is installed in the second slideway (522) through a bearing; a second motor (524) whose output end is fixedly connected to the bidirectional screw rod (523) is fixedly installed on the spinning slide (521); The spinning part (53) comprises a spinning slider (531), a support seat (532) and a spinning wheel (533); a spinning slider (531) symmetrical in front and back and threadedly connected to the bidirectional screw (523) is slidably mounted on the second slideway (522); a support seat (532) is fixedly mounted on one side wall of the spinning slider (531) close to each other; and a spinning wheel (533) is mounted on the support seat (532) via a bearing; The support portion (61) includes a connecting rod (611), a third slide seat (612), a first slide rod (613) and a second slide rod (614); the right end surface of the spinning slider (531) is fixedly installed with the connecting rod (611); the third slide seat (612) located on the right side of the spinning slider (521) is slidably installed on the limiting slide rail (2); the third slide seat (612) is provided with sliding holes distributed up and down from front to back; the first slide rod (613) slidably connected to the sliding hole below is fixedly installed on the connecting rod (611) located on the rear side; the second slide rod (614) slidably connected to the sliding hole above is fixedly installed on the connecting rod (611) located on the front side.

2. A spinning forming device for machining mechanical parts according to claim 1, characterized in that: The locking portion (43) comprises a connecting seat (431), a spring slide bar (432), a U-shaped connecting rod (433) and a locking hole (434); a front-to-back symmetrical connecting seat (431) is fixedly mounted on the right end surface of the supporting slide seat (3); a spring slide bar (432) is slidably mounted in the connecting seat (431); a U-shaped connecting rod (433) is fixedly mounted on the upper ends of the front-to-back symmetrical spring slide bars (432); and a locking hole (434) corresponding to the spring slide bar (432) is provided on the base (1).

3. The spin forming device for machining mechanical parts according to claim 1, characterized in that: A second screw rod (511) symmetrical in front and back is rotatably mounted on the upper end surface of the base (1) via a bearing seat; the second screw rod (511) located at the rear side is fixedly connected to the spline shaft (415); and the right end of the second screw rod (511) symmetrical in front and back is connected in transmission via a transmission belt (512).

4. The spin forming device for machining mechanical parts according to claim 1, characterized in that: The positioning portion (62) comprises a positioning rod (621) and an alignment cylinder (622); the positioning rod (621) is fixedly mounted on the left end surface of the third slide seat (612); and the alignment cylinder (622) matched with the positioning rod (621) is mounted at the center of the right end surface of the clamping cylinder (411) via a bearing.

5. The spin forming device for machining mechanical parts according to claim 4, characterized in that: The inner support portion (63) comprises a barrier tube (631), and the barrier tube (631) is slidably sleeved on the positioning rod (621), and the outer diameter of the barrier tube (631) is the same as the inner diameter of the smallest diameter section of the metal pipe after molding.

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