Wheel forming method and device

Abstract

The invention relates to the technical field of wheel manufacturing, and discloses a wheel forming method and device, and the method comprises the steps: carrying out swing grinding forming on a pre-forged piece to obtain a wheel component; the two end faces of a web of the wheel component are pressed tightly; groove pressing forming is conducted along the outer edge surface of the wheel component, so that the outer edge surface of the wheel component is sunken towards the circle center direction in the radial direction of the wheel component, and double-side wheel flanges are formed on the outer edge surface of the wheel component; the outer edge surface of the wheel component is subjected to groove pressing forming, so that the diameter of the outer edge surface of the wheel component is gradually reduced from one side to the other side, a single-side rim is formed on the outer edge surface of the wheel component, the material utilization rate and the machining efficiency of wheel production can be greatly improved, and the strength and the size precision of the wheel are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of wheel manufacturing, and in particular to a wheel forming method and a forming device. Background Art

[0002] As an important running part of rail vehicles, wheels are responsible for supporting the weight of the vehicle body, ensuring the running and steering of the vehicle body on the track, bearing all static and dynamic loads of the vehicle body, transmitting driving force and braking force, absorbing friction heat and dissipating heat. The development of rail vehicle transportation towards heavy load and high speed has made the load condition of wheels in service worse and worse, and put forward higher requirements on the manufacturing quality and performance of rail vehicle wheel products.

[0003] The traveling wheels used in port machinery lifting equipment play a decisive role in the operation of the entire equipment. The quality of their manufacturing and assembly is not only related to the operating capacity of the entire equipment, but also has a great impact on the subsequent normal operation.

[0004] The wheels produced by the conventional die forging-rolling method currently have problems such as low shape and size accuracy, easy wear of the tread, and serious eccentricity. This type of wheel has a large unbalanced mass when the rail vehicle is running, which will increase the instability of the vehicle body and generate additional force couples, thereby reducing the life of the axle and increasing the friction between the wheel and the rail, which is not conducive to the safe operation of the rail vehicle. For the wheels of port machinery equipment, in order to obtain the wheel rim with appropriate size accuracy, a large amount of cutting processing is required in the later stage, which not only destroys the fiber structure of the material, but also greatly wastes the material. Summary of the invention

[0005] The object of the present invention is to provide a wheel forming method and forming device, aiming to solve or improve at least one of the above-mentioned technical problems.

[0006] To achieve the above object, the present invention provides the following solution: The present invention provides a wheel forming method, comprising:

[0007] The pre-forged piece is subjected to pendulum rolling to obtain a wheel component;

[0008] Pressing the two end surfaces of the web of the wheel component;

[0009] Performing grooving along the outer edge surface of the wheel component so that the outer edge surface of the wheel component is recessed in a radial direction toward the center of a circle, thereby forming a double-sided wheel rim on the outer edge surface of the wheel component, or;

[0010] The outer edge surface of the wheel component is grooved so that the diameter of the outer edge surface of the wheel component gradually decreases from one side to the other side, thereby forming a single-sided wheel rim on the outer edge surface of the wheel component.

[0011] Optionally, the method further includes punching a center hole in the center of the wheel component with double-sided rims or the wheel component with single-sided rim.

[0012] Optionally, before the pre-forging is subjected to pendulum rolling to obtain the wheel component, the process further includes:

[0013] The blank is prepared into the pre-forging by a press and a pre-forging die.

[0014] Optionally, before the blank is prepared into the pre-forged part by a press and a pre-forging die, the method further comprises:

[0015] The blank is preheated.

[0016] Optionally, the method of pressing the two end surfaces of the web of the wheel component further includes:

[0017] A pair of pressing tools are respectively placed on the two end surfaces of the web of the wheel component, and prestress is applied by the pair of pressing tools to press the two end surfaces of the web of the wheel component.

[0018] Optionally, the method of performing grooving along the outer edge surface of the wheel component so that the outer edge surface of the wheel component is recessed along its radial direction toward the center of the circle and forming double-sided wheel rims on the outer edge surface of the wheel component further includes:

[0019] Grooving is performed along the radial center of the outer edge surface of the wheel component by a groove forming roller, so that the outer edge surface of the wheel component is recessed along its radial direction toward the center of the circle.

[0020] Optionally, the method of forming a single-sided wheel rim on the outer edge surface of the wheel component by grooving the outer edge surface of the wheel component so that the diameter of the outer edge surface of the wheel component gradually decreases from one side toward the other side, further includes:

[0021] Grooving is performed along one side of the outer edge surface of the wheel component toward the other side by a groove forming roller, so that the diameter of the outer edge surface of the wheel component gradually decreases from one side toward the other side.

[0022] Optionally, it also includes a locking mechanism arranged between a pair of the pressing tools, and the locking mechanism can switch between a locked state and an unlocked state. In the locked state, the pair of pressing tools are fixedly connected, and in the unlocked state, the pair of pressing tools are disengaged.

[0023] The present invention also provides a wheel forming device, the device comprising:

[0024] A swing rolling die, wherein the pre-forged part is placed in the swing rolling die and subjected to swing rolling forming to obtain the wheel component;

[0025] A pair of pressing tools are respectively placed on the two end surfaces of the web of the wheel component, and prestress is applied by the pair of pressing tools to press the two end surfaces of the web of the wheel component tightly;

[0026] A groove forming roller is used to perform groove forming along the radial center of the outer edge surface of the wheel component so that the outer edge surface of the wheel component is concave along its radial direction toward the center of the circle, or;

[0027] Grooving is performed along one side of the outer edge surface of the wheel component toward the other side by a groove forming roller, so that the diameter of the outer edge surface of the wheel component gradually decreases from one side toward the other side.

[0028] Optionally, it also includes a driving mechanism, which is used to connect with one of the pair of pressing tools, and drive the pressing tool to move toward the web of the wheel component through the driving mechanism, so that the pair of pressing tools press the two end surfaces of the web of the wheel component.

[0029] The present invention discloses the following technical effects: after obtaining a wheel component by performing swing rolling forming on a pre-forged piece, the two end faces of the web of the wheel component are directly pressed, and groove forming is performed along the outer edge surface of the wheel component, so that a double-sided wheel rim or a single-sided wheel rim is formed on the outer edge surface of the wheel component, and there is no need to perform precise swing rolling forming on the pre-forged piece when performing swing rolling forming, which can greatly improve the material utilization rate and processing efficiency of wheel production, improve the strength and dimensional accuracy of the wheel, improve the wear resistance of the tread of the wheel component, extend the service life, enhance the reliability of the wheel component, and improve the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0031] Figure 1 is a flow chart of the forming method of the present invention;

[0032] Figure 2 It is a schematic diagram of the forming device of the present invention.

[0033] In the figure: 1. wheel component; 2. forming tool; 3. groove forming roller; 4. locking mechanism; 5. driving mechanism. DETAILED DESCRIPTION

[0034] 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.

[0035] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0036] Reference Figure 1-Figure 2 The present invention provides a wheel forming method, comprising:

[0037] The pre-forged piece is subjected to pendulum rolling to obtain a wheel component 1;

[0038] Pressing the two end surfaces of the web of the wheel component 1;

[0039] Performing grooving along the outer edge surface of the wheel component 1 so that the outer edge surface of the wheel component 1 is recessed along its radial direction toward the center of the circle, forming double-sided wheel rims on the outer edge surface of the wheel component 1, or;

[0040] The outer edge surface of the wheel component 1 is grooved so that the diameter of the outer edge surface of the wheel component 1 gradually decreases from one side to the other side, thereby forming a single-sided rim on the outer edge surface of the wheel component 1 .

[0041] After the wheel component 1 is obtained by swing-rolling the pre-forged piece, the two end faces of the web of the wheel component 1 are directly pressed, and groove forming is performed along the outer edge surface of the wheel component 1, so that the outer edge surface of the wheel component 1 forms a double-sided wheel rim or a single-sided wheel rim. There is no need to perform precise swing-rolling on the pre-forged piece, which can greatly improve the material utilization rate and processing efficiency of the wheel production, and improve the strength and dimensional accuracy of the wheel.

[0042] A further optimization solution further includes punching a center hole in the center of the wheel component 1 with double-sided rims or the wheel component 1 with single-sided rim.

[0043] A center hole is punched out of the wheel component 1 with double-sided rims or the wheel component 1 with single-sided rim using a press machine and a punching die.

[0044] A further optimized solution, before the pre-forging is subjected to swing rolling to obtain the wheel component 1, further includes:

[0045] The blank is prepared into a pre-forging by a press and a pre-forging die.

[0046] The blank is a round bar with dimensions of 380mm in diameter and 550-572mm in height.

[0047] A further optimized solution, before the blank is prepared into a pre-forged part by a press and a pre-forging die, further includes:

[0048] Preheat the blank.

[0049] The heating temperature is 1280°C.

[0050] A further optimized solution is to compress the two end surfaces of the web of the wheel component 1, further comprising:

[0051] A pair of pressing tools 2 are respectively placed on the two end surfaces of the web of the wheel component 1, and prestress is applied by the pair of pressing tools 2 to press the two end surfaces of the web of the wheel component 1.

[0052] Limit the deformation of the web end surface of the wheel component 1 when the outer edge groove is pressed.

[0053] A further optimized solution is to perform grooving along the outer edge surface of the wheel component 1 so that the outer edge surface of the wheel component 1 is concave along its radial direction toward the center of the circle, and the method for forming double-sided wheel rims on the outer edge surface of the wheel component 1 also includes:

[0054] The groove forming is performed along the radial center of the outer edge surface of the wheel component 1 by the groove forming roller 3, so that the outer edge surface of the wheel component 1 is recessed in the radial direction toward the center of the circle.

[0055] When the diameter of the port machinery crane wheel is 850mm, the wheel component 1 with double-sided flanges has a diameter of 380mm and a height of 550mm. A horizontal grooving roller 3 with a diameter of 600mm is used to grooving the wheel component 1. The grooving roller 3 performs a combined translation and rotation motion, uses a middle protruding roller, has a rotation speed of 50 rpm, and a feed speed of 1mm / s.

[0056] A further optimized solution is to form a single-sided wheel rim on the outer edge surface of the wheel component 1 by grooving the outer edge surface of the wheel component 1 so that the diameter of the outer edge surface of the wheel component 1 gradually decreases from one side toward the other side, and the method also includes:

[0057] The groove forming is performed by the groove forming roller 3 along the outer edge surface of the wheel component 1 from one side to the other side, so that the diameter of the outer edge surface of the wheel component 1 gradually decreases from one side to the other side.

[0058] When the outer diameter of the rim of the railway vehicle wheel is 840 mm, the wheel component 1 with a single-sided rim has a diameter of 380 mm and a height of 572 mm. A horizontal grooving roller 3 with a diameter of 600 mm is used to groove the wheel component 1. The grooving roller performs a combined translation and rotation motion. The single-sided protruding roller has a roller speed of 50 rpm and a feed speed of 1 mm / s.

[0059] A further optimized solution also includes a locking mechanism 4 arranged between a pair of pressing tools 2, and the locking mechanism 4 can switch between a locked state and an unlocked state. In the locked state, the pair of pressing tools 2 are fixedly connected, and in the unlocked state, the pair of pressing tools 2 are disengaged. The load of the locking mechanism 4 is 300 tons.

[0060] The present invention also provides a wheel forming device, the device comprising:

[0061] A swing rolling die is used to obtain a wheel component 1 by placing a pre-forged part in the swing rolling die and performing swing rolling forming;

[0062] A pair of pressing tools 2 are respectively placed on the two end surfaces of the web of the wheel component 1, and a prestress is applied by the pair of pressing tools 2 to press the two end surfaces of the web of the wheel component 1 tightly;

[0063] A groove forming roller 3 is used to perform groove forming along the radial center of the outer edge surface of the wheel component 1 so that the outer edge surface of the wheel component 1 is recessed along its radial direction toward the center of the circle to form a single-sided wheel rim, or;

[0064] The groove forming is performed by the groove forming roller 3 along the outer edge surface of the wheel component 1 from one side to the other side, so that the diameter of the outer edge surface of the wheel component 1 gradually decreases from one side to the other side, forming a double-sided wheel rim.

[0065] A further optimization scheme also includes a driving mechanism 5, which is used to connect with one of the pair of pressing tools 2. The driving mechanism 5 drives the pressing tool 2 to move toward the web of the wheel component 1 so that the pair of pressing tools 2 press the two end surfaces of the web of the wheel component 1. The driving mechanism 5 is preferably driven hydraulically.

[0066] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0067] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A wheel forming method, characterized in that: include: The pre-forged piece is subjected to pendulum rolling to obtain a wheel component (1); Pressing the two end surfaces of the web of the wheel component (1) tightly; Performing grooving along the outer edge surface of the wheel component (1) so that the outer edge surface of the wheel component (1) is recessed along its radial direction toward the center of the circle, forming double-sided wheel rims on the outer edge surface of the wheel component (1), or; The outer edge surface of the wheel component (1) is grooved so that the diameter of the outer edge surface of the wheel component (1) gradually decreases from one side toward the other side, thereby forming a single-sided wheel rim on the outer edge surface of the wheel component (1).

2. The wheel forming method according to claim 1, characterized in that: The method also includes punching a center hole in the center of the wheel component (1) with double-sided wheel rims or the wheel component (1) with single-sided wheel rims.

3. The wheel forming method according to claim 1, characterized in that: Before the pre-forging is subjected to pendulum rolling to obtain the wheel component (1), the process further comprises: The blank is prepared into the pre-forging by a press and a pre-forging die.

4. The wheel forming method according to claim 3, characterized in that: Before the blank is prepared into the pre-forged part by a press and a pre-forging die, the method further comprises: The blank is preheated.

5. The wheel forming method according to claim 1, characterized in that: The method for pressing the two end surfaces of the web of the wheel component (1) tightly also includes: A pair of pressing tools (2) are respectively placed on the two end faces of the web of the wheel component (1), and prestress is applied by the pair of pressing tools (2), so that the two end faces of the web of the wheel component (1) are pressed tightly.

6. The wheel forming method according to claim 1, characterized in that: The method of forming a double-sided wheel rim on the outer edge surface of the wheel component (1) by grooving so that the outer edge surface of the wheel component (1) is recessed along its radial direction toward the center of the circle, further comprising: Grooving is performed along the radial center of the outer edge surface of the wheel component (1) by a groove forming roller (3), so that the outer edge surface of the wheel component (1) is recessed in the radial direction toward the center of the circle.

7. The wheel forming method according to claim 1, characterized in that: The method for forming a single-sided wheel rim on the outer edge surface of the wheel component (1) by performing groove forming on the outer edge surface of the wheel component (1) so that the diameter of the outer edge surface of the wheel component (1) gradually decreases from one side toward the other side, further comprising: A groove forming is performed by a groove forming roller (3) along the outer edge surface of the wheel component (1) from one side toward the other side, so that the diameter of the outer edge surface of the wheel component (1) gradually decreases from one side toward the other side.

8. The wheel forming method according to claim 5, characterized in that: It also includes a locking mechanism (4) arranged between the pair of pressing tools (2), and the locking mechanism (4) can be switched between a locked state and an unlocked state. In the locked state, the pair of pressing tools (2) are fixedly connected, and in the unlocked state, the pair of pressing tools (2) are disengaged.

9. A wheel forming device, characterized in that: A wheel forming method for implementing any one of claims 1 to 8, characterized in that the device comprises: A swing rolling die, wherein the pre-forged part is placed in the swing rolling die and subjected to swing rolling forming to obtain the wheel component (1); A pair of pressing tools (2) are respectively placed on the two end surfaces of the web of the wheel component (1), and prestress is applied by the pair of pressing tools (2) to press the two end surfaces of the web of the wheel component (1); A groove forming roller (3) is used to perform groove forming along the radial center of the outer edge surface of the wheel component (1) so that the outer edge surface of the wheel component (1) is recessed in the radial direction toward the center of the circle, or; A groove forming is performed by a groove forming roller (3) along the outer edge surface of the wheel component (1) from one side toward the other side, so that the diameter of the outer edge surface of the wheel component (1) gradually decreases from one side toward the other side.

10. The wheel forming device according to claim 9, characterized in that: The invention also comprises a driving mechanism (5), wherein the driving mechanism (5) is used to be connected to one of the pair of pressing tools (2), and the pressing tool (2) is driven by the driving mechanism (5) to move toward the web of the wheel component (1), so that the pair of pressing tools (2) press the two end surfaces of the web of the wheel component (1).

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