Large multi-shaft spinning machine
By adopting the Z-axis drive mechanism and a balance mechanism in a large multi-axis spinning machine, the problem of difficulty in synchronous control of multiple hydraulic cylinders in the prior art is solved, and the accuracy and stability of spinning processing are improved.
Patent Information
- Application Number
- CN202411740560.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-29
- Publication Date
- 2025-03-18
AI Technical Summary
During the spinning process of existing large vertical four-rotary wheel spinning machines, due to the difficulty of synchronous control of multiple hydraulic cylinders, the axial lifting and lowering movement of the rotating wheel is unstable, affecting the stability and balance of the overall work.
A large multi-axis spinning machine is designed, using a Z-axis drive mechanism and a balance mechanism. Through the cooperation of the Z-axis motor, roller screw and screw nut, the synchronous up and down movement of the Z-axis drag plate is realized, and balanced through the nitrogen balance cylinder and related pipelines are maintained.
It improves the accuracy and stability of spinning processing, ensures that the lifting and lowering actions of multiple spin wheels are kept synchronized, and enhances the working balance of the spinning press.
Smart Images
Figure CN119634541A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of metal plastic forming machinery, in particular to a large multi-axis spinning machine. Background Art
[0002] Spinning is a plastic processing method that uses a spinning tool to apply pressure to a rotating blank to produce continuous local plastic deformation and form it into the required hollow rotating parts. It is a commonly used process method for manufacturing thin-walled rotating parts. It can complete a variety of different forming processes such as drawing, flanging, and closing. As an important branch of plastic processing, it has the advantages of high product manufacturing precision and lightweight, and occupies an important position in the field of metal precision processing technology in aerospace, military industry, etc.
[0003] The equipment used in the spinning process is called a spinning machine or spinning equipment. According to the bed structure, it can be divided into vertical spinning machines and horizontal spinning machines. According to the number of spinning wheels, it can be divided into single-wheel, double-wheel, triple-wheel, quad-wheel and ball spinning machines.
[0004] In the prior art, some spinning machines install multiple rollers on a large slide, and the slide is installed on a column. A hydraulic cylinder can be used to control the synchronous axial lifting and lowering movement of each roller. This structure is feasible for small and medium-sized spinning machines, but for large vertical four-roller spinning machines, multiple cylinders are needed to drive the slide of the spinning machine. During the spinning process, the lifting and lowering movements of the multiple rollers need to be synchronized, otherwise it will affect the working stability and balance of the entire spinning machine. The axial lifting and lowering movement of the rollers is generally controlled by a hydraulic cylinder, and the synchronous control of multiple hydraulic cylinders is difficult. The contractility of the hydraulic pipeline and the hydraulic transmission distance will affect the synchronous control accuracy of the hydraulic cylinder. Summary of the invention
[0005] The purpose of the present invention is to solve the problems in the prior art and to provide a large multi-axis spinning machine that can improve the spinning processing accuracy and stability.
[0006] To achieve the above-mentioned objectives, the present invention proposes a large-scale multi-axis spinning machine, including a base, a left column, a right column, a top cover, a Z-axis slide, a plurality of balancing mechanisms and a plurality of Z-axis driving mechanisms, the base is provided with a left column and a right column, a Z-axis slide is provided between the left column and the right column for sliding cooperation, a top cover is provided at the upper ends of the left column and the right column, the top cover is provided with a Z-axis driving mechanism for driving the Z-axis slide to move up and down and a balancing mechanism for maintaining the balance of the up and down movement of the Z-axis slide.
[0007] Preferably, the Z-axis driving mechanism comprises a Z-axis motor, a roller screw is provided at the driving end of the Z-axis motor, a screw nut matching with the roller screw is provided on the roller screw, and the screw nut is arranged on the Z-axis slide.
[0008] Preferably, the balancing mechanism comprises a nitrogen bottle, which is connected to the air inlet and the air outlet of the nitrogen balancing cylinder through an air inlet pipe and an air exhaust pipe respectively, and the air inlet pipe and the air exhaust pipe are provided with an air inlet valve and an air exhaust valve respectively.
[0009] Preferably, the left column and the right column are both slidably connected to the Z-axis carriage via a plurality of roller linear rails.
[0010] Preferably, a tail top pressure cylinder is provided on the top cover, and a driving end of the tail top pressure cylinder is provided with a tail top seat passing through the Z-axis carriage.
[0011] Preferably, a spinning wheel assembly is provided at the bottom of the Z-axis slide plate at uniform intervals in a circular shape, and the spinning wheel assembly includes a slide, a drive motor, a reducer, a ball screw II, a screw nut II, a housing, a roller seat, a roller shaft, a gear motor and a spinning wheel. A ball screw II and a slide are provided in the housing, a reducer whose output end is connected to the ball screw II is provided at the front end of the housing, a drive motor driving its input end is provided on the reducer, a screw nut II matching the ball screw II is provided on the slide, a roller seat located outside the housing is provided on the slide, a roller shaft is provided in the roller seat, a spinning wheel is provided at the lower end of the roller shaft, and a gear motor driving the roller shaft is provided on the roller seat.
[0012] Preferably, the rear ends of the upper and lower side walls of the box body are provided with avoidance grooves.
[0013] Preferably, a connecting groove is provided at the rear end of the slide seat, and a plug connector matching the connecting groove is provided on the rotating wheel seat, and the plug connector is fixedly connected to the connecting groove via a pin shaft.
[0014] Preferably, a spherical roller bearing and a deep groove ball bearing are sequentially arranged between the large diameter section of the roller shaft and the roller seat from bottom to top, the large diameter section is provided with a blocking step located at the lower end of the inner ring of the spherical roller bearing, and the large diameter section is provided with a clamping nut for clamping and fixing the inner ring of the deep groove ball bearing through a thread, a thrust roller bearing is arranged on the small diameter section of the roller shaft, a gasket is arranged between the inner ring of the thrust roller bearing and the large diameter section, an annular protrusion for blocking the outer ring of the thrust roller bearing is arranged in the roller seat, a tapered roller bearing is arranged between the small diameter section above the annular protrusion and the roller seat, and a fixing cover for fixing the tapered roller bearing is provided at the upper end of the roller seat.
[0015] Preferably, a spindle box is provided on the base, a mold core is provided on the output shaft of the spindle box, a positioning hole with a diameter equal to that of the center hole of the blank part is provided on the mold core, a positioning shaft matching the positioning hole is provided at the lower end of the tail top seat, a truncated cone-shaped guide head is provided at the lower end of the positioning shaft, two symmetrically arranged driving cylinders are provided on the spindle box, a lower top ring is provided on the driving end of the driving cylinder, an upper top ring is provided on the lower top ring via a number of support seats, and the input shaft of the spindle box is driven by a spindle motor.
[0016] Beneficial effects of the present invention: Compared with the prior art, the present invention can improve the spinning processing accuracy and stability by providing a Z-axis driving mechanism for driving the Z-axis slide to move up and down and a balancing mechanism for maintaining the balance of the Z-axis slide to move up and down on the top cover.
[0017] The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a structural schematic diagram of a large multi-axis spinning machine of the present invention; Figure 2 is a schematic diagram of the cross-sectional structure of the spinning wheel assembly; Figure 3 It is a partial structural schematic diagram of a large multi-axis spinning machine of the present invention.
[0019] In the figure: 1-base, 2-left column, 3-right column, 4-top cover, 5-Z-axis slide, 6-balancing mechanism, 7-spinning wheel assembly, 8-spindle motor, 9-tail top seat, 10-roller linear rail, 11-balancing mechanism, 12-mold core, 13-Z-axis drive mechanism, 14-tail top cylinder, 15-blank part, 16-drive cylinder, 17-lower top ring, 18-support seat, 19-upper top ring, 100-guide head, 101-positioning Hole, 102-positioning shaft, 111-nitrogen bottle, 112-nitrogen balance cylinder, 131-Z-axis motor, 132-roller screw, 771-large diameter section, 772-blocking step, 773-small diameter section, 714-spherical roller bearing, 715-deep groove ball bearing, 716-pressure nut, 717-thrust roller bearing, 718-washer, 719-annular protrusion, 7110-tapered roller bearing, 7111-fixing cover. DETAILED DESCRIPTION
[0020] See also Figure 1 , Figure 2 and Figure 3The present invention discloses a large multi-axis spinning machine, comprising a base 1, a left column 2, a right column 3, a top cover 4, a Z-axis slide plate 5, a plurality of balancing mechanisms 11 and a plurality of Z-axis driving mechanisms 13. The base 1 is provided with a left column 2 and a right column 3, a Z-axis slide plate 5 is slidingly provided between the left column 2 and the right column 3, a top cover 4 is provided at the upper ends of the left column 2 and the right column 3, a Z-axis driving mechanism 13 for driving the Z-axis slide plate 5 to move up and down and a balancing mechanism 11 for maintaining the balance of the up and down movement of the Z-axis slide plate 5 are provided on the top cover 4.
[0021] The Z-axis driving mechanism 13 includes a Z-axis motor 131 . A roller screw 132 is disposed at the driving end of the Z-axis motor 131 . A screw nut matched with the roller screw 132 is disposed on the roller screw 132 . The screw nut is disposed on the Z-axis carriage 5 .
[0022] The balancing mechanism 11 comprises a nitrogen bottle 111 , which is connected to an air inlet and an air outlet of a nitrogen balancing cylinder 112 through an air inlet pipe and an air outlet pipe, respectively. An air inlet valve and an air outlet valve are respectively disposed on the air inlet pipe and the air outlet pipe.
[0023] The left column 2 and the right column 3 are both slidably connected to the Z-axis carriage 5 via a plurality of roller linear rails 10 .
[0024] The top cover 4 is provided with a tail top pressure cylinder 14 , and the driving end of the tail top pressure cylinder 14 is provided with a tail top seat 9 passing through the Z-axis carriage 5 .
[0025] The bottom of the Z-axis carriage 5 is provided with a spinning wheel assembly 7 evenly spaced in a circumferential shape, and the spinning wheel assembly 7 includes a slide 70, a drive motor 71, a reducer 72, a ball screw II73, a screw nut II74, a box 75, a rotating wheel seat 76, a rotating wheel shaft 77, a gear motor 78 and a spinning wheel 79. The box 75 is provided with a ball screw II73 and a slide 70, and the front end of the box 75 is provided with an output end and a ball screw. II73 is connected to a reducer 72, and the reducer 72 is provided with a driving motor 71 for driving its input end. The slide 70 is provided with a screw nut II74 that cooperates with the ball screw II73. The slide 70 is provided with a roller seat 76 located outside the box body 75, and a roller shaft 77 is provided in the roller seat 76. A spinning wheel 79 is provided at the lower end of the roller shaft 77. The roller seat 76 is provided with a gear motor 78 for driving the roller shaft 77.
[0026] The rear ends of the upper and lower side walls of the box body 75 are both provided with avoidance grooves 710 .
[0027] A connecting groove 711 is disposed at the rear end of the slide seat 70 , and a plug connector 712 matching the connecting groove 711 is disposed on the roller seat 76 . The plug connector 712 is fixedly connected to the connecting groove 711 via a pin shaft 713 .
[0028] A spherical roller bearing 714 and a deep groove ball bearing 715 are sequentially arranged between the large diameter section 771 of the roller shaft 77 and the roller seat 76 from bottom to top; a blocking step 772 located at the lower end of the inner ring of the spherical roller bearing 714 is arranged on the large diameter section 771; a clamping nut 716 for clamping and fixing the inner ring of the deep groove ball bearing 715 is provided on the large diameter section 771 through a thread; a thrust roller bearing 717 is arranged on the small diameter section 773 of the roller shaft 77; a washer 718 is arranged between the inner ring of the thrust roller bearing 717 and the large diameter section 771; an annular protrusion 719 for blocking the outer ring of the thrust roller bearing 717 is arranged in the roller seat 76; a tapered roller bearing 7110 is arranged between the small diameter section 773 above the annular protrusion 719 and the roller seat 76; a fixing cover 7111 for fixing the tapered roller bearing 7110 is arranged at the upper end of the roller seat 76.
[0029] A spindle box 6 is provided on the base 1, a mold core 12 is provided on the output shaft of the spindle box 6, a positioning hole 101 with a diameter equal to that of the center hole of the blank part 15 is provided on the mold core 12, a positioning shaft 102 matching the positioning hole 101 is provided at the lower end of the tail top seat 9, a truncated cone-shaped guide head 100 is provided at the lower end of the positioning shaft 102, two symmetrically arranged driving cylinders 16 are provided on the spindle box 6, a lower top ring 17 is provided on the driving end of the driving cylinder 16, an upper top ring 19 is provided on the lower top ring 17 via a plurality of support seats 18, and the input shaft of the spindle box 6 is driven by a spindle motor 8.
[0030] Working process of the present invention: In the working process of a large multi-axis spinning machine of the present invention, a processed blank part 15 is placed on a fixture 12 for positioning, and then the tail top pressure cylinder 14 is started to drive the tail top seat 9 to descend, press the processed blank, and the positioning shaft 14 passes through the center hole of the blank part 15 and is inserted into the positioning hole 13 to achieve accurate positioning of the blank part 15; then the Z-axis motor 131 and the spindle motor 8 are started, and the Z-axis motor 131 drives the Z-axis slide 5 to descend through the cooperation of the roller screw 132 and the screw nut, and the Z-axis slide 5 drives the spinning wheel assembly 7 to descend, and applies pressure through the spinning wheel assembly 7 to produce continuous local plastic deformation, while the spindle motor 8 drives the fixture 12 to rotate through the spindle box 6, and the fixture 12 drives the processed blank thereon to rotate. After the processing is completed, the tail top pressure cylinder 14 drives the tail top seat 9 to rise, releases the product, and pushes the lower top ring 17 through the driving cylinder 16. The lower top ring 17 pushes the upper top ring 19 through the support seat 18, and the upper top ring 19 pushes the product upward to make the product separate from the tooling and then remove it.
[0031] The servo hydraulic station 16 provides pressure to the fixture 12, the tail top pressure cylinder 14 and other devices so that they can work normally; the lubricating hydraulic station 15 is used to provide lubricating oil to the roller screw 132, the roller linear rail 10 and other devices so that they can work smoothly and stably.
[0032] The driving motor 71 rotates clockwise or counterclockwise, driving the ball screw II73 to rotate through the reducer 72, and the ball screw II73 drives the slide 70 to move forward or backward through the screw nut II74. The slide 70 drives the rotating wheel seat 76 to move, and the rotating wheel seat 76 drives the spinning wheel 79 to move through the rotating wheel shaft 77 for position adjustment. The gear motor 78 drives the spinning wheel 79 to rotate through the rotating wheel shaft 77.
[0033] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention belongs to the protection scope of the present invention.
Claims
1. A large multi-axis spinning machine, characterized in that: The invention comprises a base (1), a left column (2), a right column (3), a top cover (4), a Z-axis carriage (5), a plurality of balancing mechanisms (11) and a plurality of Z-axis driving mechanisms (13), wherein the base (1) is provided with a left column (2) and a right column (3), a Z-axis carriage (5) is provided between the left column (2) and the right column (3) in a sliding manner, a top cover (4) is provided at the upper ends of the left column (2) and the right column (3), and a Z-axis driving mechanism (13) for driving the Z-axis carriage (5) to move up and down and a balancing mechanism (11) for maintaining the balance of the up and down movement of the Z-axis carriage (5) are provided on the top cover (4).
2. A large multi-axis spinning machine according to claim 1, characterized in that: The Z-axis driving mechanism (13) comprises a Z-axis motor (131), a driving end of the Z-axis motor (131) being provided with a roller screw I (132), the roller screw I (132) being provided with a screw nut I matching therewith, and the screw nut I being arranged on the Z-axis carriage (5).
3. A large multi-axis spinning machine as claimed in claim 1, characterized in that: The balancing mechanism (11) comprises a nitrogen bottle (111), wherein the nitrogen bottle (111) is connected to an air inlet and an air outlet of a nitrogen balancing cylinder (112) via an air inlet pipe and an air outlet pipe, respectively, and an air inlet valve and an air outlet valve are respectively provided on the air inlet pipe and the air outlet pipe.
4. A large multi-axis spinning machine according to claim 1, characterized in that: The left column (2) and the right column (3) are both slidably connected to the Z-axis carriage (5) via a plurality of roller linear rails (10).
5. A large multi-axis spinning machine as claimed in claim 1, characterized in that: The top cover (4) is provided with a tail top pressure cylinder (14), and the driving end of the tail top pressure cylinder (14) is provided with a tail top seat (9) passing through the Z-axis carriage (5).
6. A large multi-axis spinning machine according to claim 1, characterized in that: The bottom of the Z-axis carriage (5) is provided with a spinning wheel assembly (7) which is evenly spaced in a circumferential shape. The spinning wheel assembly (7) comprises a slide seat (70), a drive motor (71), a reducer (72), a ball screw II (73), a screw nut II (74), a housing (75), a spinning wheel seat (76), a spinning wheel shaft (77), a gear motor (78) and a spinning wheel (79). The housing (75) is provided with a ball screw II (73) and a slide seat (70). The front end of the housing (75) is provided with an output end and a ball screw. II (73), the reducer (72) being provided with a driving motor (71) for driving its input end, the slide seat (70) being provided with a screw nut II (74) cooperating with the ball screw II (73), the slide seat (70) being provided with a roller seat (76) located outside the box body (75), the roller seat (76) being provided with a roller shaft (77), the lower end of the roller shaft (77) being provided with a spinning wheel (79), and the roller seat (76) being provided with a gear motor (78) for driving the roller shaft (77).
7. A large multi-axis spinning machine as claimed in claim 6, characterized in that: The rear ends of the upper and lower side walls of the box body (75) are both provided with avoidance grooves (710).
8. A large multi-axis spinning machine as claimed in claim 6, characterized in that: A connecting groove (711) is provided at the rear end of the sliding seat (70), and a plug connector (712) matching the connecting groove (711) is provided on the rotating wheel seat (76), and the plug connector (712) is fixedly connected to the connecting groove (711) via a pin shaft (713).
9. A large multi-axis spinning machine as claimed in claim 6, characterized in that: A spherical roller bearing (714) and a deep groove ball bearing (715) are sequentially arranged between the large diameter section (771) of the rotary wheel shaft (77) and the rotary wheel seat (76) from bottom to top; a blocking step (772) located at the lower end of the inner ring of the spherical roller bearing (714) is arranged on the large diameter section (771); a clamping nut (716) for clamping and fixing the inner ring of the deep groove ball bearing (715) is arranged on the large diameter section (771) through a thread; and a thrust bearing (716) is arranged on the small diameter section (773) of the rotary wheel shaft (77). A roller bearing (717), a washer (718) is provided between the inner ring of the thrust roller bearing (717) and the large diameter section (771), an annular protrusion (719) is provided in the roller seat (76) for blocking the outer ring of the thrust roller bearing (717), a tapered roller bearing (7110) is provided between the small diameter section (773) above the annular protrusion (719) and the roller seat (76), and a fixing cover (7111) for fixing the tapered roller bearing (7110) is provided at the upper end of the roller seat (76).
10. A large multi-axis spinning machine as claimed in claim 5, characterized in that: The base (1) is provided with a spindle box (6), the output shaft of the spindle box (6) is provided with a mold core (12), the mold core (12) is provided with a positioning hole (101) having a diameter equal to that of the center hole of the blank part (15), the lower end of the tail top seat (9) is provided with a positioning shaft (102) matched with the positioning hole (101), the lower end of the positioning shaft (102) is provided with a truncated cone-shaped guide head (100), the spindle box (6) is provided with two symmetrically arranged driving cylinders (16), the driving end of the driving cylinder (16) is provided with a lower top ring (17), the lower top ring (17) is provided with an upper top ring (19) via a plurality of support seats (18), and the input shaft of the spindle box (6) is driven by a spindle motor (8).