Deep cylinder type metal part spinning forming device
By using the combination of spindle box, tail frame, hydraulic cylinder and laser range measuring instrument in the spinning molding device, the problem of edge trembling during spinning of deep cylinder metal parts is solved, and high-precision and high consistency rotation is achieved Pressing molding improves the mechanical properties and manufacturing efficiency of the product.
Patent Information
- Application Number
- CN202420002317.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-02
- Publication Date
- 2025-01-07
- Estimated Expiration
- 2034-01-02
AI Technical Summary
During spinning, deep-cylinder metal parts are prone to material folds and microcracks due to edge tremors, which affects the processing quality.
Using a spinning forming device including spindle box, tail frame, drag plate, tire frame, hydraulic cylinder and laser range measuring instrument, the auxiliary roulette mechanism driven by a translation motor, hydraulic cylinder and angle motor ensures the stability of the blank and mold. Fit, use laser range measuring instruments to adjust the position of the auxiliary roulette in real time to reduce tremor.
It improves spinning accuracy and consistency, reduces deformation during spinning, suppresses product jitter, improves product integrity and mechanical properties, extends service life, and simplifies manufacturing processes.
Smart Images
Figure CN222307023U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a spinning forming device, in particular to a deep cylinder metal part spinning forming device, belonging to the technical field of aerospace manufacturing. Background Art
[0002] Propeller fairing ( Figure 1 )It is an important part of the aircraft used to adjust airflow, reduce resistance and protect the engine. Considering the large temperature difference in the working environment of the propeller fairing and the temperature difference stress that easily leads to the deterioration of the mechanical properties of the material and the appearance of micro cracks, the integral spinning forming is adopted.
[0003] Since the propeller fairing is a deep cylindrical metal part and the blank is a large-sized metal flat plate, if only the center part fits with the mold during spinning positioning, the blank will vibrate significantly at the edge after being squeezed by the spinning wheel, which can easily cause material wrinkles and lead to scrapping of the part. Utility Model Content
[0004] The utility model aims to provide a deep cylindrical metal part spinning forming device to solve the problem of blank vibration during the spinning process and ensure the spinning processing quality.
[0005] To achieve the above-mentioned purpose, the basic technical scheme of the deep cylindrical metal parts spinning forming device of the utility model is: comprising a main spindle box and a tailstock respectively arranged at both ends of the length direction of the bed, and a carriage which forms a horizontal moving pair with the bed in the length direction is arranged between the main spindle box and the tailstock;
[0006] The outer end of the rotatable horizontal spindle extending from the spindle box is fixed with a spinning forming mold that matches the inner contour of the workpiece to be spun; the tailstock supports a rotatable tail top coaxial with the spindle; a slide frame that forms a horizontal moving pair in the width direction of the bed is placed on the carriage; the slide frame supports a spinning wheel through a wheel frame;
[0007] An auxiliary wheel disc mechanism is arranged on one side of the main spindle box. The fixed seat of the auxiliary wheel disc mechanism supports a lead screw driven by a translation motor, and supports a hydraulic cylinder which forms a horizontal moving pair in the width direction of the bed. The hydraulic cylinder and the lead screw form a spiral pair. The outer end of the piston rod extending from the front end is equipped with a horizontal pin shaft driven by a rotation motor which forms a hinge pair. The horizontal pin shaft is fixedly connected to the auxiliary wheel disc through an angle adjustment block.
[0008] A further improvement of the utility model is that the fixing seat is in a frame structure, a guide rail is fixed to the front and rear ends respectively, and the middle part supports the screw rod.
[0009] A further improvement of the utility model is that the hydraulic cylinder forms a horizontal moving pair through a sliding block and a guide rail, and a nut is arranged in the middle to form a spiral pair with a lead screw.
[0010] A further improvement of the utility model is that the axis of the rotating wheel and the axis of the main shaft are in the same horizontal plane.
[0011] A further improvement of the utility model is that the axis line of the auxiliary wheel disc when it is in a vertical plane is at the same height as the rotating wheel.
[0012] A further improvement of the utility model is that a laser distance measuring instrument is installed on the slide frame.
[0013] In summary, the utility model has the following beneficial effects:
[0014] (1) During the spinning process of the laser ranging spinning equipment, the auxiliary wheel is tangent to the sheet and located at the spinning point. The spun products are more accurate and consistent than those spun by the mechanical telescopic auxiliary wheel. (2) When the laser ranging spinning equipment is spinning, the sheet shape is basically consistent with the design, reducing the variable factors in the spinning process. (3) The laser ranging spinning equipment can record the deformation of the sheet during the spinning process and provide data for subsequent analysis. (4) The part shape is more consistent with the tool path, and the tool path design is simpler; (5) Laser ranging spinning also has the advantages of mechanical telescopic auxiliary wheel spinning: it can suppress the jitter of the product during the spinning process and improve the qualified rate of the product spinning; the use of integral spinning avoids product welding, simplifies the process, and shortens the product manufacturing cycle; the integral spinning of the product improves the integrity and mechanical properties of the product, avoids problems such as microcracks and stress concentration, and extends the service life of the product. Therefore, the cylindrical metal part spinning forming equipment of the utility model can realize the high-quality and high-qualified rate preparation of deep cylindrical metal spinning parts, and lays a foundation for CNC machining and manufacturing of deep cylindrical metal spinning parts. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 A schematic diagram of the propeller fairing structure which is a deep-cylinder metal structure;
[0016] Figure 2 It is a structural schematic diagram of an embodiment of the utility model.
[0017] Figure 3 for Figure 2 A schematic diagram of the auxiliary wheel mechanism structure of an embodiment.
[0018] In the figure: 1, spinning mold; 2, metal disc; 3, tail top; 4, auxiliary wheel disc mechanism; 7, spinning wheel; 8, laser distance measuring instrument; 9, sliding tire; 10, bed; 4-1 guide rail; 4-2 screw rod; 4-3 translation motor; 4-4 fixed seat; 4-5 hydraulic cylinder; 4-6 piston cylinder; 4-7 angle adjustment block; 4-8 auxiliary wheel disc, 4-9 corner motor. DETAILED DESCRIPTION
[0019] The deep cylindrical metal part spinning forming device of this embodiment is as follows Figure 2 As shown, a spindle box 10-1 is placed at one end of the bed 10 in the length direction, and a tailstock 10-2 is placed at the other end. A carriage 10-3 is installed between the spindle box 10-1 and the tailstock 10-2, which forms a horizontal moving pair with the bed in the length direction. The outer end of the rotatable horizontal spindle extending from the spindle box 10-1 is fixed to a spinning forming mold 1 that matches the inner contour of the propeller fairing to be produced. The tailstock 10-2 supports a rotatable tail top 3 coaxial with the spindle. A slide frame 9 is placed on the carriage 10-3, which forms a horizontal moving pair with the carriage 10-3 in the width direction of the bed. The slide frame 9 supports a rotary wheel 7 through a wheel frame. These structures are similar to those of existing lathes and will not be described in detail. In addition, a laser rangefinder 8 is placed on the slide frame 9.
[0020] An auxiliary wheel mechanism is arranged on one side of the main shaft box 10-1, and its specific structure is as follows: Figure 3 As shown, it includes a fixed seat 4-4 of a frame structure, on which a guide rail 4-1 is installed at the front and rear, respectively, and the middle part supports a screw 4-2 driven by a translation motor 4-3. The fixed seat supports a hydraulic cylinder 4-5 that forms a horizontal moving pair with the guide rail 4-1 through a slider (not shown in the figure), and the middle part of the hydraulic cylinder 4-5 is equipped with a nut (not shown in the figure) that forms a spiral pair with the screw 4-2. The outer end of the piston rod 4-6 extending from the front end of the hydraulic cylinder 4-5 is equipped with a horizontal pin driven by an angle motor 4-9 that forms a hinge pair with it, and the horizontal pin is fixedly connected to the auxiliary wheel disc 4-8 through an angle adjustment block 4-7. When optimizing the design, the axis centerline of the rotating wheel is in the same horizontal plane as the axis of the main shaft, and the axis centerline of the auxiliary wheel disc when it is in the vertical plane is at the same height as the rotating wheel.
[0021] Therefore, driven by the translation motor, the hydraulic cylinder can drive the auxiliary wheel disc to make horizontal displacement relative to the width direction of the bed; the hydraulic cylinder can drive the auxiliary wheel disc to make horizontal displacement relative to the length direction of the bed; the angle motor can change the angle between the auxiliary wheel disc and the vertical plane as needed.
[0022] In this way, during the spin forming process, the metal disc 2 to be spun as the blank is clamped at the end of the spin forming mold through the tail top, and the auxiliary wheel disc is operated to fit the metal disc 2. During the spinning process, the spatial relative position of the spinning wheel and the metal disc is measured with the help of a laser rangefinder. The position of the auxiliary wheel disc during the spinning process is regulated by translation, extension and rotation as needed, so that it is always in secure contact with the outer edge of the metal disc 2; this can effectively avoid the vibration of the blank when operating the spinning wheel for spinning. Experiments have shown that the product spun using this embodiment not only has high dimensional accuracy, but also has a small number of reciprocating spinning times, a simple spinning trajectory, and high efficiency.
[0023] In particular, based on this embodiment, it is easy to realize CNC machining, and the spinning forming of the propeller fairing is completed more efficiently and with higher quality, and its main steps are:
[0024] 1) Set the coordinate origin according to the structure of the mold and establish the tool relative coordinate system;
[0025] 2) Set the coordinate origin according to the structure of mold 1 and establish the tool relative coordinate system. When metal disc 2 is a high-temperature metal, the mold needs to be heated before spinning and the gap between the spinning wheel and the mold needs to be adjusted. When metal disc 2 is a general metal, heating is not required.
[0026] 3) Importing the spinning program into the spinning equipment 10 and performing simulation;
[0027] 4) Fix the metal disc 2 on the spinning forming die 1 of the spinning equipment 10 through the tail top, and make the auxiliary wheel disc 6 fit the inner surface of the metal disc 2.
[0028] 5) Run the program to spin the metal disc. During spinning, the auxiliary wheel disc 6 is extended and retracted axially by the thrust applied by the spinning wheel 7 during the spinning process, and the contact force between the auxiliary wheel disc and the metal disc 2 can be adjusted. The laser rangefinder 8 can measure the spatial shape and position of the metal disc 2 and the spinning wheel 7, and feed back the signal to the auxiliary wheel disc 6. After receiving the signal, the auxiliary wheel disc 6 can be extended and retracted axially, moved horizontally, and the angle of the contact surface between the auxiliary wheel disc 6 and the metal disc 2 can be adjusted to always keep it tangent to the sheet metal at the spinning location, and the tangent position is the contact position between the spinning wheel 7 and the metal disc 2.
[0029] In addition to the above embodiments, the present invention may also have other implementations. Any technical solution formed by equivalent replacement or equivalent transformation falls within the protection scope required by the present invention.
Claims
1. A deep cylindrical metal part spinning forming device, comprising a main spindle box and a tailstock respectively arranged at both ends of the bed in the length direction, and a carriage is installed between the main spindle box and the tailstock to form a horizontal moving pair with the bed in the length direction; The outer end of the rotatable horizontal spindle extending from the spindle box is fixed with a spinning forming mold that matches the inner contour of the workpiece to be spun; the tailstock supports a rotatable tail top coaxial with the spindle; a slide frame that forms a horizontal moving pair in the width direction of the bed is placed on the carriage; the slide frame supports a spinning wheel through a wheel frame; the characteristics are: An auxiliary wheel disc mechanism is arranged on one side of the main spindle box. The fixed seat of the auxiliary wheel disc mechanism supports a lead screw driven by a translation motor, and supports a hydraulic cylinder which forms a horizontal moving pair in the width direction of the bed. The hydraulic cylinder and the lead screw form a spiral pair. The outer end of the piston rod extending from the front end is equipped with a horizontal pin shaft driven by a rotation motor which forms a hinge pair. The horizontal pin shaft is fixedly connected to the auxiliary wheel disc through an angle adjustment block.
2. The deep cylindrical metal part spinning forming device according to claim 1, characterized in that: The fixing seat is in the form of a frame structure, with a guide rail fixed to the front and rear ends respectively, and the middle part supporting the screw rod.
3. The deep cylindrical metal part spinning forming device according to claim 2, characterized in that: The hydraulic cylinder forms a horizontal moving pair through a sliding block and a guide rail, and a nut is arranged in the middle to form a spiral pair with a lead screw.
4. The deep cylindrical metal part spinning forming device according to claim 3 is characterized in that: The axis of the rotating wheel and the axis of the main shaft are in the same horizontal plane.
5. The deep cylindrical metal part spinning forming device according to claim 4, characterized in that: When the auxiliary wheel disc is in a vertical plane, the axis line is at the same height as the rotating wheel.
6. The deep cylindrical metal part spinning forming device according to claim 5, characterized in that: A laser distance measuring instrument is mounted on the skid frame.