Spinning machine

Abstract

The invention discloses a spinning machine, belongs to the technical field of machining, adopts a forming wheel structure, and improves the efficiency and quality of workpiece machining and demolding. The spinning machine comprises a lathe bed, a forming wheel, a tail shaft and a spinning wheel, the forming wheel is formed by crossing a plurality of first forming fans and second forming fans, and the fan blades can move towards the center of the forming wheel to form a rotating body structure. In the machining process, the tail shaft abuts against the end of the forming wheel to clamp a workpiece, the spinning wheel is tightly attached to the surface of the forming wheel to move and apply pressure, and the machining precision is guaranteed. The first forming fan and the second forming fan are attached in an inclined plane mode, an isosceles trapezoid section is formed during combination, and the stability of the forming wheel and the workpiece clamping force are enhanced. And in the demolding stage, the first forming fan rotates and shrinks around the built-in rotating shaft under the driving of the oil cylinder, and meanwhile, the second forming fan is driven to synchronously move by utilizing the tensile force of the elastic body, so that the adhesive force between the workpiece and the forming wheel is effectively reduced, and lossless smooth separation of the workpiece is realized.

Description

Technical Field

[0001] The invention relates to the technical field of machining, and in particular to a spinning machine. Background Art

[0002] A spinning machine is a device that uses the combined effects of rotation and pressure to guide metal materials to deform and flow in a specific direction, thereby shaping them into the desired shape. During the operation of a traditional spinning machine, a plate-like workpiece is placed on a forming wheel. Through the rotation of the forming wheel and the pushing action of the spinning wheel, the workpiece is gradually shaped and fits tightly to the surface of the forming wheel. However, there is a significant problem in this process: when the distance between the workpiece and the forming wheel is not properly controlled, it will either lead to poor processing results or form a nearly vacuum area between the two due to close contact. This vacuum state will significantly enhance the adhesion between the workpiece and the forming wheel due to the effect of the external atmospheric pressure, making it difficult to separate the subsequent workpieces.

[0003] During the spin forming process, if the workpiece is designed to have a special shape with thin ends and a thick middle, since it is tightly attached to the surface of the forming wheel, especially when the forming wheel is a single integral structure, this special shape of the workpiece is very easy to get stuck on the forming wheel after processing, making the separation process particularly difficult. To this end, the present invention provides a spin forming machine that solves the above problem. Summary of the invention

[0004] In view of the above-mentioned technical deficiencies, the object of the present invention is to provide a spinning machine that can achieve the function of inward contraction and convenient demoulding.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solution: The present invention provides a spinning machine, including a bed, and also including: A forming wheel, the forming wheel is rotatably mounted on the bed; A tail shaft, the tail shaft is rotatably mounted on the bed, one end of the tail shaft can abut against the end of the forming wheel, and when the tail shaft abuts against the end of the forming wheel, the connection between the forming wheel and the tail shaft can clamp the workpiece; A spinning wheel, which is arranged on one side of the forming wheel and moves closely along the surface of the forming wheel, and the spinning wheel always moves along a plane during the process of applying pressure to the workpiece; Among them, the forming wheel includes multiple first forming fans and multiple second forming fans, the first forming fans and the second forming fans are arranged crosswise, and several of the first forming fans and the second forming fans can form a rotating forming wheel, and the first forming fans and the second forming fans can both move toward the center of the forming wheel.

[0006] Preferably, the connecting parts of the first molding fan and the second molding fan are fitted in the form of an inclined surface. When the first molding fan and the second molding fan are combined into a molding wheel, on a section perpendicular to the axis of the molding wheel, the lines connecting the connecting end points of the first molding fan and the second molding fans on both sides can form an isosceles trapezoid, and the hypotenuses of the same length on both sides constitute the waist of the isosceles trapezoid, and the side of the isosceles trapezoid close to the center axis is the lower base.

[0007] Preferably, the forming wheel further comprises a connecting member, a plurality of first forming fans are rotatably mounted on the outside of the connecting member via a rotating plate, and a rotating shaft of the first forming fans is arranged inside the connecting member.

[0008] Preferably, an inner core is fixed on the connecting member, and a driving block is slidably mounted on one end of the inner core away from the connecting member, and the driving block is hinged to the inner wall of the first forming fan through a plurality of connecting rods.

[0009] Preferably, a slider is slidably mounted inside the inner core via an elastic body, and an end of the slider is fixedly connected to the second molding fan.

[0010] Preferably, an end groove is provided inside the connecting member, one side of the rotating plate is fixed on the first forming fan, and one end of the rotating plate is rotatably installed in the end groove through a rotating shaft.

[0011] Preferably, a pin is fixed on the end of the tail shaft, and a socket is provided on the end of the forming wheel. The pin can be inserted into the socket, and the diameter of the pin is matched with the socket at the end of the forming wheel.

[0012] Preferably, a plurality of rubber pads are provided on the latch, and the rubber pads are evenly distributed on the latch.

[0013] Preferably, the diameter of the tail shaft is smaller than the diameter of any position of the forming wheel.

[0014] The beneficial effects of the present invention are: The present invention adopts a combined design of a movable first molding fan and a second molding fan, which optimizes the flexibility of the demoulding process. During the demoulding stage, the first molding fan rotates around its rotation axis installed on the connecting member and shrinks inwards through the drive of the oil cylinder. The tension of the elastic body is used to make the second molding fan move with it. This design weakens the adhesion between the workpiece and the molding wheel, ensuring that the workpiece can be separated from the molding wheel surface smoothly and without damage.

[0015] The rotation axis of the first molding fan is arranged inside the end groove. This layout not only ensures the compactness of the structure, but also ensures that during the rotation and contraction process, all parts of the first molding fan remain within the initial boundary, thereby avoiding direct contact with the molded product and achieving the smooth completion of the contraction action without interfering with the product shape. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a connection diagram of the forming wheel and the spinning wheel clamping the workpiece in the present invention.

[0017] Figure 2 This is a diagram showing the pressure exerted by the spinning wheel on the workpiece in the present invention.

[0018] Figure 3 It is a connection diagram of the forming wheel and the tail shaft of the present invention.

[0019] Figure 4 It is an internal view of the forming wheel of the present invention.

[0020] Figure 5 For the present invention Figure 4 Cross-sectional view along the AA direction.

[0021] Figure 6 This is a diagram of the inward clamping state of the first molding fan in the molding wheel of the present invention.

[0022] In the figure: 1. Molding wheel, 101. First molding fan, 102. Second molding fan, 103. Connector, 104. Inner core, 105. Turn plate, 106. Driving block, 107. Connecting rod, 108. Slider, 109. Elastomer, 1010. Oil cylinder, 1011. End groove, 2. Spindle, 3. Spinning wheel, 4. Bed, 5. Tail shaft, 501. Rubber pad. DETAILED DESCRIPTION

[0023] The present invention is described below with specific embodiments, but they are not intended to be limiting of the invention.

[0024] Embodiment 1 like Figure 1-Figure 6 As shown, in this embodiment, a spinning machine is provided, which includes a bed 4, a forming wheel 1, a tail shaft 5 and a spinning wheel 3. The forming wheel 1 is rotatably mounted on the bed 4, and the forming wheel 1 is firmly mounted on the main shaft 2 of the machine bed 4. The main shaft 2 rotates under the action of the driving force, thereby driving the forming wheel 1 to rotate synchronously.

[0025] The tail shaft 5 is rotatably mounted on the bed 4, and one end of the tail shaft 5 can be against the end of the forming wheel 1. When the tail shaft 5 is against the end of the forming wheel 1, the connection between the forming wheel 1 and the tail shaft 5 can clamp the workpiece. The tail shaft 5 is designed to be rotatably mounted on the other side of the machine bed 4, and this position is far away from the installation point of the forming wheel 1. It is worth noting that the tail shaft 5 itself does not have the power to rotate autonomously, that is, it rotates passively. Its rotation mechanism relies on the friction force generated by the close contact with the forming wheel 1. Specifically, when the forming wheel 1 rotates under the drive of the spindle 2, its rotational force is transmitted to the workpiece through the contact interface, and further through the friction between the workpiece and the tail shaft 5, the tail shaft 5 is driven to rotate. In this way, the workpiece can smoothly and accurately complete the rotation processing process under the coordinated action of the forming wheel 1 and the tail shaft 5.

[0026] The spinning wheel 3 is arranged at one side of the forming wheel 1 and moves closely along the surface of the forming wheel 1 . Moreover, the spinning wheel 3 always moves along a plane during the process of applying pressure to the workpiece.

[0027] The design of the forming wheel 1 can be changed according to the needs. The forming wheel 1 provided in this embodiment is a main body that combines the features of a cylinder and a cone: the cylindrical part is arranged close to the main shaft 2 as a stable support; and the cone part is seamlessly connected to the end of the cylinder away from the main shaft 2, and its tip extends in the direction away from the main shaft 2. Such a design allows the forming wheel 1 to be customized according to specific processing needs.

[0028] In actual operation, the workpiece to be processed is accurately placed at the end of the forming wheel 1, and then the workpiece is pushed by accurately controlling the moving trajectory and force of the spinning wheel 3 to achieve the desired forming effect. In this process, the rotation of the forming wheel 1 and the pushing action of the spinning wheel 3 cooperate to ensure that the workpiece can be accurately formed according to the predetermined shape and size.

[0029] Among them, the forming wheel 1 includes a plurality of first forming fans 101 and a plurality of second forming fans 102, the first forming fans 101 and the second forming fans 102 are arranged crosswise, and a plurality of first forming fans 101 and second forming fans 102 can form a forming wheel 1 of a rotating body, and the first forming fans 101 and the second forming fans 102 can both move toward the center of the forming wheel 1, and during the workpiece processing, when the first forming fans 101 and the second forming fans 102 expand outward to their maximum positions, they together constitute a complete forming wheel 1. When the processing is completed, this forming wheel 1 will shape the workpiece into a rotating body shape that is tightly attached to its surface. Usually, such a forming wheel 1 maintains close contact with the processed rotating body workpiece, and this contact ensures that the workpiece can be accurately shaped according to the preset shape during the processing.

[0030] In this close fit, the air between the workpiece and the forming wheel 1 is effectively exhausted, thus forming a vacuum region between them. Due to the presence of external atmospheric pressure, this vacuum region significantly enhances the adhesion between the workpiece and the forming wheel 1, making it difficult to separate them directly after processing.

[0031] However, when a forming wheel 1 composed of a plurality of independent first forming fans 101 and second forming fans 102 is used, the situation is different. After processing, these fan blades can be designed to first move a distance toward the center of the forming wheel 1 to achieve preliminary loosening. Subsequently, the first forming fan 101 can be separated before the second forming fan 102. Such a sequential separation strategy greatly reduces the area that needs to be processed during a single separation, thereby reducing the difficulty of separation between the workpiece and the forming wheel 1 due to atmospheric pressure.

[0032] This design not only makes the separation process of the workpiece and the forming wheel 1 smoother and more efficient, but also reduces the negative impact that the mechanical stress generated during the separation process may have on the shape of the workpiece, further reducing the risk of product deformation after forming.

[0033] Embodiment 2 like Figure 1-Figure 6 As shown, based on the first embodiment, this embodiment provides a driving method for the first forming fan 101 and the second forming fan 102, which is as follows: The connection parts of the first forming fan 101 and the second forming fan 102 are fitted in the form of an inclined surface. When the first forming fan 101 and the second forming fan 102 are combined into a forming wheel 1, on a section perpendicular to the axis of the forming wheel 1, the connecting lines of the first forming fan 101 and the connecting ends of the second forming fans 102 on both sides can form an isosceles trapezoid. The hypotenuses of the same length on both sides constitute the waist of the isosceles trapezoid. The side of the isosceles trapezoid close to the central axis is the lower base. Figure 5 In the figure, the dotted line shows an isosceles trapezoid, which just reflects the unique bevel-shaped fitting method between the first molded fan 101 and the second molded fan 102. This design allows the first molded fan 101 to be firmly clamped with the second molded fan 102, thereby ensuring a close fit between the two during the molding process. Before the first molded fan 101 is moved inward, due to the locking effect of the bevel-shaped fitting, the second molded fan 102 will remain fixed and cannot move on its own.

[0034] The forming wheel 1 further includes a connecting member 103, and a plurality of first forming fans 101 are rotatably mounted on the outside of the connecting member 103 through a rotating plate 105. The rotating shaft of the first forming fan 101 is arranged inside the connecting member 103. Figure 6In the figure, the dotted line indicates the initial position of the first molding fan 101 before it rotates inwards. When the rotation axis of the first molding fan 101 is cleverly designed inside the connecting member 103, this layout ensures that any position of the first molding fan 101 can be stably limited within the range defined by the dotted line during the entire rotation process, or more specifically, within the range toward the inside of the molding wheel 1, avoiding the situation where the first molding fan 101 accidentally deviates outwards beyond the dotted line due to rotation. Therefore, when the first molded fan 101 rotates inwards for separation, it can be carried out smoothly without unnecessary jamming with the second molded fan 102. The end slot 1011 is provided inside the connecting member 103. One side of the rotating plate 105 is fixed on the first molded fan 101. One end of the rotating plate 105 is rotatably installed in the end slot 1011 through a rotating shaft. The first molded fan 101 rotates around the rotating shaft located at the end of the rotating plate 105. This rotating shaft cleverly extends to the inside of the end slot 1011, thereby realizing the concealed layout of the rotating shaft, which is located outside the first molded fan 101. Such a design ensures that when the first molded fan 101 rotates, all its parts will not exceed the overall outline of the molding wheel 1.

[0035] An inner core 104 is fixed on the connecting member 103, and a driving block 106 is slidably mounted on one end of the inner core 104 away from the connecting member 103. The driving block 106 is hinged to the inner wall of the first molded fan 101 through a plurality of connecting rods 107, and the connecting rods 107 are circumferentially mounted on the driving block 106. Each first molded fan 101 is connected to the driving block 106 through an independent connecting rod 107. Both ends of these connecting rods 107 are provided with rotating shafts, so that they can be flexibly connected to the driving block 106 and the first molded fan 101 in rotation. The connection mechanism of the driving block 106 and the inner core 104 depends on the oil cylinder 1010, which is firmly fixed inside the inner core 104, and its output end is directly connected to the driving block 106.

[0036] When the oil cylinder 1010 is extended, the thrust generated by it will drive the driving block 106 to slide in a specific direction and move outward. This action is then transmitted to the first molded fan 101 through the connecting rod 107, causing them to open outward and reach a predetermined open state. On the contrary, when the oil cylinder 1010 is shortened, it will apply a pulling force to the first molded fan 101 through the connecting rod 107, causing it to rotate inward. During this rotation process, the first molded fan 101 will be misaligned with the adjacent second molded fan 102, thereby creating the necessary space for the second molded fan 102 to move inward and achieve relative displacement or adjustment between the two.

[0037] A slider 108 is slidably mounted inside the inner core 104 through an elastic body 109. The end of the slider 108 is fixedly connected to the second molding fan 102. The slider 108 moves perpendicular to the surface of the inner core 104 and slides directly toward the inside of the inner core 104. After the first molding fan 101 completes the inward movement and makes room for its adjacent second molding fan 102, the second molding fan 102 can smoothly slide toward the inside of the inner core 104 along the vertical direction to adjust or change its position. This design ensures that different molding fans can coordinate with each other to complete the required molding action.

[0038] Embodiment 3 like Figure 1-Figure 6 As shown, based on the first and second embodiments, this embodiment provides a structure of the tail shaft 5, which is as follows: The end of the tail shaft 5 is fixed with a pin, and the end of the forming wheel 1 is provided with a socket, into which the pin can be inserted. The diameter of the pin is adapted to the socket at the end of the forming wheel 1. The socket referred to here is designed according to the diameter of the hole naturally formed at the end of the forming wheel 1 after the first forming fan 101 and the second forming fan 102 are combined. When the pin is accurately inserted into this socket, it not only effectively prevents the first forming fan 101 and the second forming fan 102 from moving further inward, ensuring the stability of the forming structure, but also serves as a key component for fixing the workpiece. Before the workpiece is processed, a positioning hole will be set on it in advance. At this time, the pin can be accurately inserted into this positioning hole, thereby realizing the precise positioning of the workpiece, providing the necessary accuracy guarantee for subsequent processing.

[0039] A plurality of rubber pads 501 are arranged on the latch, and the rubber pads 501 are evenly distributed on the latch. Friction can be generated between the rubber pads 501 and the positioning holes on the workpiece, thereby ensuring that the workpiece can be stably mounted on the latch.

[0040] The diameter of the tail shaft 5 is smaller than the diameter of the forming wheel 1 at any position. The spinning wheel 3 applies pressure to the workpiece from one side of the tail shaft 5, and the design diameter of the tail shaft 5 is smaller than the forming wheel 1. Such a size difference provides sufficient space for the spinning wheel 3, ensuring that the spinning wheel 3 can smoothly avoid the tail shaft 5 during the movement and application of pressure, avoiding unnecessary contact between the two, thereby ensuring the smooth progress of the processing process.

[0041] Working principle: During the installation process, the workpiece with a specific hole is first accurately sleeved on the pin at the end of the tail shaft 5. Then, the pin slides smoothly in the direction toward the forming wheel 1 until the workpiece rests firmly on the forming wheel 1. The spinning wheel 3 is cleverly installed on the machine tool body through a composite slide system in the horizontal and vertical directions. The two slides work together to flexibly control the movement of the spinning wheel 3 in three-dimensional space.

[0042] As the spinning wheel 3 starts, it clings to the surface of the workpiece and gradually moves along the contour of the forming wheel 1. During the movement, the spinning wheel 3 applies uniform pressure to the workpiece, pushing the workpiece material to undergo plastic deformation until the workpiece fits tightly and perfectly replicates the surface shape of the forming wheel 1, completing the forming process of the workpiece.

[0043] After the workpiece is formed, the system enters the demolding stage. At this time, the oil cylinder 1010 begins to shorten, and its power is transmitted to a series of precisely designed connecting rods 107 through the drive block 106. These connecting rods 107 mechanisms work together to drive the first molding fan 101 to rotate inward, so that it gradually breaks away from the contact with the second molding fan 102. As the first molding fan 101 moves smoothly, the built-in elastic body 109 immediately takes effect, pushing the second molding fan 102 to move inward, and finally achieving complete separation from the formed workpiece. At this point, the entire separation process is completed.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate rather than limit the technical solutions of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the present invention can still be modified or replaced by equivalents. Any modification or partial replacement that does not depart from the spirit and scope of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A spinning machine, comprising a bed (4), characterized in that: Also includes: A molding wheel (1), the molding wheel (1) being rotatably mounted on a bed (4); A tail shaft (5), the tail shaft (5) being rotatably mounted on the bed (4), one end of the tail shaft (5) being capable of abutting against the end of the forming wheel (1), and when the tail shaft (5) abuts against the end of the forming wheel (1), the connection between the forming wheel (1) and the tail shaft (5) being capable of clamping a workpiece; A spinning wheel (3), the spinning wheel (3) being arranged on one side of the forming wheel (1) and moving in close contact with the surface of the forming wheel (1), and the spinning wheel (3) always moves along a plane during the process of applying pressure to the workpiece; The molding wheel (1) comprises a plurality of first molding fans (101) and a plurality of second molding fans (102), wherein the first molding fans (101) and the second molding fans (102) are arranged crosswise, and a plurality of the first molding fans (101) and the second molding fans (102) can form a molding wheel (1) that is a rotating body, and the first molding fans (101) and the second molding fans (102) can both move toward the center of the molding wheel (1).

2. A spinning machine according to claim 1, characterized in that: The connection parts of the first molding fan (101) and the second molding fan (102) are fitted in the form of an inclined surface. When the first molding fan (101) and the second molding fan (102) are combined into a molding wheel (1), on a cross section perpendicular to the axis of the molding wheel (1), the connecting lines of the first molding fan (101) and the connecting ends of the second molding fans (102) on both sides can form an isosceles trapezoid, and the oblique sides of the same length on both sides constitute the waist of the isosceles trapezoid, and the side of the isosceles trapezoid close to the central axis is the lower base.

3. A spinning machine according to claim 2, characterized in that: The molding wheel (1) further comprises a connecting member (103), a plurality of first molding fans (101) are rotatably mounted on the outside of the connecting member (103) via a rotating plate (105), and a rotation axis of the first molding fans (101) is arranged inside the connecting member (103).

4. A spinning machine according to claim 3, characterized in that: An inner core (104) is fixed on the connecting member (103); a driving block (106) is slidably mounted on one end of the inner core (104) away from the connecting member (103); and the driving block (106) is hinged to the inner wall of the first molding fan (101) via a plurality of connecting rods (107).

5. A spinning machine according to claim 4, characterized in that: A slider (108) is slidably mounted inside the inner core (104) via an elastic body (109), and an end of the slider (108) is fixedly connected to the second molding fan (102).

6. A spinning machine according to claim 3, characterized in that: An end groove (1011) is provided inside the connecting member (103), one side of the rotating plate (105) is fixed on the first forming fan (101), and one end of the rotating plate (105) is rotatably mounted in the end groove (1011) via a rotating shaft.

7. A spinning machine according to claim 1, characterized in that: The end of the tail shaft (5) is fixed with a pin, and the end of the molding wheel (1) is provided with a socket, the pin can be inserted into the socket, and the diameter of the pin is adapted to the socket at the end of the molding wheel (1).

8. A spinning machine according to claim 7, characterized in that: A plurality of rubber pads (501) are provided on the latch, and the rubber pads (501) are evenly distributed on the latch.

9. A spinning machine according to claim 1, characterized in that: The diameter of the tail shaft (5) is smaller than the diameter of any position of the forming wheel (1).

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