Bending tool and frame part manufacturing method
By using extrusion and bending technology of mating and rolling elements in bending tooling, the cracking and orange peel problems of metal materials with larger thickness during bending are solved, and the beautiful and smooth appearance of metal materials are achieved.
Patent Information
- Application Number
- CN202510215760.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-26
- Publication Date
- 2025-06-13
AI Technical Summary
Metal materials with larger thickness are prone to cracking and orange peel patterns during bending, resulting in poor appearance.
A bending tool is adopted, including a mating body and a rolling body. The mating body has a bending guide part, and the rolling body is arranged at a distance from the mating body. The rolling body moves along a specific trajectory and moves around its own rotation axis to realize the extrusion bending of the workpiece to be processed.
It effectively avoids cracking and orange peel patterns on the outer wall surface of the workpiece to be processed when bending, ensuring the aesthetics and smoothness of the inner and outer walls.
Smart Images
Figure CN120133347A_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to the technical field of thick-walled frame parts, and in particular to a manufacturing method for a bending tooling frame part. Background Art
[0002] When the conventional stamping and bending equipment on the market is used to bend and form such thick aluminum extrusion metal plate parts, during the bending process, one side of the aluminum extrusion metal plate part is compressed and the other side is stretched. Moreover, since the outer and inner radii of the bend of the thick aluminum extrusion metal plate part differ greatly, this will cause cracks and orange peel phenomenon on the stretched side surface of the bent part, resulting in poor appearance.
[0003] In view of this, there is an urgent need for a new bending tooling and a manufacturing method for frame parts on the market to at least solve the problems that cracks are likely to appear on the stretched side surface, orange peel patterns are generated, and the appearance is poor when bending metal materials with a large thickness in the related art. Summary of the Invention
[0004] Embodiments of the present disclosure provide a bending tooling and a manufacturing method for frame parts to solve the problems that cracks are likely to appear on the stretched side surface, orange peel patterns are generated, and the appearance is poor when bending metal materials with a large thickness in the related art.
[0005] The bending tooling provided by the embodiments of the present disclosure includes a mating body and a rolling body;
[0006] The mating body has a bending guiding portion;
[0007] The rolling body is arranged at an interval from the mating body, and a limiting space for limiting a workpiece to be processed is formed between the rolling body and the mating body;
[0008] Wherein, under the bending working condition of the bending tooling on the workpiece to be processed, the rolling body performs a first type of movement along a first trajectory and performs a second type of movement around the rotation axis of the rolling body;
[0009] The movement directions of the first type of movement and the second type of movement are the same, and the first trajectory includes a sub-track segment parallel to the outer peripheral surface contour of the bending guiding portion;
[0010] Under the condition that the rolling body moves along the sub-track segment, the rolling body and the bending guiding portion jointly bend the workpiece to be processed, and the rolling body generates rolling friction with one side of the workpiece to be processed, and the bending guiding portion generates static friction with the other side of the workpiece to be processed.
[0011] In an implementable manner, under the condition that the rolling body moves along the sub-track segment, the distance between the rolling body and the outer peripheral surface contour of the bending guiding portion is always equal.
[0012] In one possible implementation, the rolling elements include a first rolling element and a second rolling element;
[0013] The first rolling element and the second rolling element are respectively abutted and arranged on the same side of the workpiece to be processed;
[0014] The direction of the first type of movement of the first rolling element is opposite to the direction of the first type of movement of the second rolling element;
[0015] The direction of the second type of movement of the first rolling element is opposite to the direction of the second type of movement of the second rolling element;
[0016] And the movement trajectories of the first rolling element and the second rolling element can jointly enclose the outer peripheral surface contour of the mating body.
[0017] In one possible implementation, a plurality of bending guiding parts are convexly arranged in the outer peripheral surface contour of the mating body;
[0018] The plurality of bending guiding parts can respectively cooperate with the rolling elements to bend the workpiece to be processed in at least two different directions.
[0019] In one possible implementation, the outer peripheral surface contour of the bending guiding part has an arc-shaped pressing surface;
[0020] The radian of the plurality of arc-shaped pressing surfaces is the same or different, and the radius of curvature of the plurality of arc-shaped pressing surfaces is the same or different;
[0021] The arc-shaped pressing surface can respectively guide and bend the workpiece to be processed.
[0022] In addition, the embodiments of the present disclosure also provide a method for manufacturing a frame member, and the method includes:
[0023] Place the workpiece to be processed in the limiting space between the mating body and the rolling elements, so that the rolling elements and the bending guiding parts of the mating body respectively abut against both sides of the workpiece to be processed;
[0024] Control the rolling elements to perform a first type of movement along a first trajectory and perform a second type of movement around the rotation axis of the rolling elements to obtain a bent frame member;
[0025] Weld the bent frame member to obtain a first frame member;
[0026] Wherein, the movement directions of the first type of movement and the second type of movement are the same;
[0027] The first trajectory includes a sub-track segment parallel to the outer peripheral surface contour of the bending guiding part;
[0028] The rolling body and the bending guide part jointly bend the workpiece to be processed, and the rolling body generates rolling friction with one side of the workpiece to be processed, and the bending guide part generates static friction with the other side of the workpiece to be processed.
[0029] In an implementable embodiment, controlling the rolling body to perform a first type of movement along a first trajectory and a second type of movement around the rotation axis of the rolling body to obtain a bent frame member, including:
[0030] When the rolling body moves along the first trajectory to a sub-track segment parallel to the outer peripheral surface contour of the bending guide part, the distance between the rolling body and the outer peripheral surface contour of the bending guide part always remains unchanged.
[0031] In an implementable embodiment, before placing the workpiece to be processed in the limiting space between the mating body and the rolling body, it further includes:
[0032] Stamping a concave structure part and / or a convex structure part in the blank workpiece;
[0033] Grinding the inner surface of the concave part of the concave structure part and / or the outer surface of the convex part of the convex structure part to obtain the workpiece to be processed.
[0034] In an implementable embodiment, after welding the bent frame member to obtain a first frame member, it further includes:
[0035] Correspondingly machining concave positioning parts at the head and tail ends of the bent frame member, correspondingly arranging fasteners in the concave positioning parts, and then jointly welding the fasteners and the head and tail ends of the bent frame member to form a welding part;
[0036] Grinding the welding part to be flush with the outer surface of the frame wall of the bent frame member to obtain the first frame member.
[0037] In an implementable embodiment, after welding the bent frame member to obtain a first frame member, it further includes:
[0038] Adding connecting parts to the inner frame wall of the first frame member;
[0039] Preparing an antioxidant film on the outer frame wall of the first frame member.
[0040] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the present disclosure, nor is it used to limit the scope of the present disclosure. Other features of the present disclosure will become easily understood through the following description. Description of the Drawings
[0041] By reading the following detailed description with reference to the accompanying drawings, the above and other objects, features, and advantages of the exemplary embodiments of the present disclosure will become readily understood. In the drawings, several embodiments of the present disclosure are shown by way of illustration and not limitation, wherein:
[0042] In the drawings, the same or corresponding reference numerals denote the same or corresponding parts.
[0043] Figure 1 Fig. 1 shows a first bending state diagram of a bending tooling provided by an embodiment of the present disclosure;
[0044] Figure 2 Fig. 2 shows a second bending state diagram of a bending tooling provided by an embodiment of the present disclosure;
[0045] Figure 3 Fig. 3 shows a third bending state diagram of a bending tooling provided by an embodiment of the present disclosure;
[0046] Figure 4 Fig. 4 shows a partially enlarged view of the bending process of a bending tooling provided by an embodiment of the present disclosure;
[0047] Figure 5 Fig. 5 shows a schematic diagram of a first frame member obtained by the bending tooling provided by an embodiment of the present disclosure
[0048] Figure 6 Fig. 6 shows a flowchart of a method for manufacturing a frame member provided by an embodiment of the present disclosure.
[0049] Description of reference numerals in the figures: 1. Fitting body; 11. Bending guiding portion; 111. Arc-shaped pressing surface;
[0050] 2. Rolling body; 21. First rolling body; 22. Second rolling body;
[0051] 3. Workpiece to be processed; 31. First frame member;
[0052] L1. First type of movement; L2. Second type of movement. Detailed implementation manners
[0053] To make the objectives, features, and advantages of the present disclosure more obvious and understandable, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present disclosure.
[0054] The embodiments of the present disclosure will be described in detail below with reference to the drawings.
[0055] Combined with Figure 1 、Figure 2 and Figure 3 As shown in Figure 3 , an embodiment of the present disclosure provides a bending tooling, which includes a mating body 1 and a rolling body 2; the mating body 1 has a bending guiding portion 11; the rolling body 2 is arranged at an interval from the mating body 1, and a limiting space for limiting a workpiece 3 to be processed is formed between the rolling body 2 and the mating body 1;
[0056] Wherein, in the bending working condition of the bending tooling for the workpiece 3 to be processed, the rolling body 2 performs a first type of motion L1 along a first trajectory and performs a second type of motion L2 around the rotation axis of the rolling body 2; the motion directions of the first type of motion L1 and the second type of motion L2 are the same, and the first trajectory includes a sub-track segment parallel to the outer peripheral surface contour of the bending guiding portion 11;
[0057] When the rolling body 2 moves along the sub-track segment, the rolling body 2 and the bending guiding portion 11 jointly bend the workpiece 3 to be processed, and a rolling friction is generated between the rolling body 2 and one side of the workpiece 3 to be processed, and a static friction is generated between the bending guiding portion 11 and the other side of the workpiece 3 to be processed.
[0058] The bending tooling provided by the embodiment of the present disclosure can be specifically but not limited to being used for bending a metal material with a larger thickness, and can effectively solve the problems of easy cracking, orange peel phenomenon, and poor appearance on the tensile side surface when bending a metal material with a larger thickness in the related art. The specific principle and use process are described as follows.
[0059] When the bending tooling provided by the embodiment of the present disclosure is used, first, the workpiece 3 to be processed can be correspondingly placed in the limiting space formed by the interval between the rolling body 2 and the mating body 1, and the inner side wall of the workpiece 3 to be processed can be correspondingly abutted by the bending guiding portion 11 in the mating body 1, and the outer side wall of the workpiece 3 to be processed can be correspondingly abutted by the rolling body 2 to realize the limiting and fixing of the workpiece 3 to be processed before bending; then, when performing the bending process, the mating body 1 can be kept fixed, and the rolling body 2 can be correspondingly driven to perform a first type of motion L1 along the first trajectory. The first type of motion L1 can be but not limited to being set to rotate around the outer peripheral contour of the mating body 1 at intervals, for example Figure 1 , Figure 2 or Figure 3As shown by the dotted line with an arrow, the rolling body 2 performs a first type of movement L1 along the first trajectory while performing a second type of movement L2 around its own rotation axis, and the movement directions of the first type of movement L1 and the second type of movement L2 are the same; in this way, when the rolling body 2 moves to the sub-track segment in the first trajectory that is parallel to the outer peripheral surface contour of the bending guide portion 11, the rolling body 2 and the bending guide portion 11 respectively and simultaneously extrude and bend the outer wall and the inner wall of the workpiece 3 to be processed, so that the outer wall and the inner wall of the workpiece 3 to be processed are squeezed at the same time when bending, thereby avoiding the problem of cracking in the outer wall surface of the workpiece 3 to be processed when bending.
[0060] Moreover, during the extrusion and bending process, static friction is generated between the bending guide portion 11 and the inner wall side of the workpiece 3 to be processed, ensuring that the workpiece 3 to be processed will not slip or dislocate during the extrusion and bending process; when the rolling body 2 extrude and bends the outer wall of the workpiece 3 to be processed, the rolling body 2 itself will also rotate in the same direction as the bending direction, thereby causing rolling friction between the rolling body 2 and the outer wall of the workpiece 3 to be processed, greatly reducing the friction resistance between the rolling body 2 and the outer wall of the workpiece 3 to be processed during the bending process, thereby avoiding the problem of orange peel texture on the outer wall surface of the workpiece 3 to be processed when bending.
[0061] In addition, it should be noted that the limiting space formed by the spacing between the rolling element 2 and the mating element 1, the specific shape, length, width and thickness of the limiting space can be adaptively adjusted according to the actual needs of the workpiece to be processed, and the minimum spacing between the rolling element 2 and the mating element 1 can be recorded as the thickness of the limiting space, and the thickness can be adaptively adjusted according to the thickness of the workpiece to be processed. For example, the thickness of the limiting space can be adjusted to be consistent with the thickness of the workpiece to be processed; or the thickness of the limiting space can be adjusted to be slightly smaller than the thickness of the workpiece to be processed, that is, the interference fit assembly relationship between the workpiece to be processed and the limiting space; or the thickness of the limiting space can be adjusted to the thickness of the workpiece to be processed to obtain the final product.
[0062] In addition, the first trajectory in the first type of motion L1 is set to rotate around the outer contour of the ligand 1 at intervals, and the actual trajectory of the first trajectory can be an arc less than 360°, a circle equal to 360°, or a multi-circle circle greater than 360°.
[0063] Moreover, the first track has a sub-track segment parallel to the outer peripheral contour of the bending guide portion 11. The outer peripheral contour of the bending guide portion 11 can be an arc, a parabola, or other smooth curve shapes, and the sub-track segment can be set to a corresponding arc, a parabola, or other smooth curve shape, and the outer peripheral contour of the bending guide portion 11 is any point P. 1 , P 2 …P nAt this time, there is a unique corresponding point P in the sub-track segment 1 ’, P 2 ’…P n ’, and P 1 P 1 ’, P 2 P 2 ’…P n P n ’. The lengths of the line segments formed by the corresponding connections of P
[0064] In summary, the bending tooling provided by the embodiments of the present disclosure can, when bending the workpiece 3 to be processed, simultaneously extrude and bend the outer sidewall and the inner sidewall of the workpiece 3 to be bent through the rolling elements 2 and the bending guiding portion 11 respectively, effectively avoiding the problem of cracking on the surface of the outer sidewall of the workpiece 3 to be bent during bending; it can ensure that there is no problem of slip and misalignment during the extrusion and bending process through the static friction between the bending guiding portion 11 and the inner wall of the workpiece 3 to be processed; it can perform a self-rotation in the same direction as the bending direction corresponding to the extrusion and bending process of the rolling elements 2, so as to greatly reduce the frictional resistance between the rolling elements 2 and the outer sidewall of the workpiece 3 to be bent during the bending process, effectively avoiding the problem of orange peel texture on the surface of the outer sidewall of the workpiece 3 to be bent during bending.
[0065] The bending tooling provided by the embodiments of the present disclosure can make the surfaces of the inner and outer sidewalls of thick metal materials or other materials beautiful and smooth during bending, so that the thick plate parts processed by the bending process can also be directly used as the appearance parts of the product.
[0066] In an implementable manner, when the rolling element 2 moves along the sub-track segment, the distance between the rolling element 2 and the outer peripheral surface contour of the bending guiding portion 11 is always equal.
[0067] For example, in combination with Figure 4 a further detailed description, during the process of the rolling element 2 moving and self-rotating along the sub-track segment, the rolling element 2 always has a point closest to the outer peripheral surface contour of the bending guiding portion 11, and the minimum distance between this point and the outer peripheral surface contour of the bending guiding portion 11 is denoted as Figure 4 A2 in
[0068] When the rolling element 2 moves along the sub-track segment in the first track, the distance between the rolling element 2 and the outer peripheral surface contour of the bending guiding portion 11 is set to be always equal, that is: when the rolling element 2 moves along the sub-track segment in the first track, A2 always remains equal; that is: the thickness of the part of the workpiece 3 to be processed that is pressed against the bending guiding portion 11 for bending is always equal.
[0069] In addition, it should be added that the thickness of the non-bending part before or after the corresponding bending part of the workpiece 3 to be processed and the bending guiding portion 11 can be denoted asFigure 4 Among them, A1 should satisfy A1 > A2, and the essential reason for A1 > A2 is that during the actual bending process of the bending part of the workpiece 3 corresponding to the bending guide part 11, it is caused by the rolling body 2 and the bending guide part 11 pressing against each other from the outer wall and the inner wall respectively.
[0070] It can be understood that the present application does not specifically limit the setting method of the distance between the rolling body 2 and the bending guide part 11, that is, those skilled in the art can set and adjust its type according to the actual situation. The above situation is only an exemplary illustration of how the target part in the present application can be realized, but is not limited to the situations described in the above embodiments.
[0071] In an implementable manner, the rolling body 2 may include a first rolling body 21 and a second rolling body 22; the first rolling body 21 and the second rolling body 22 may be respectively abutted and arranged on the same side of the workpiece 3 to be processed; the direction of the first type of movement L1 of the first rolling body 21 is opposite to the direction of the first type of movement L1 of the second rolling body 22; the direction of the second type of movement L2 of the first rolling body 21 is opposite to the direction of the second type of movement L2 of the second rolling body 22; and the movement trajectories of the first rolling body 21 and the second rolling body 22 can jointly enclose the outer peripheral surface contour of the fitting body 1.
[0072] For example, in combination with Figure 1 、 Figure 2 and Figure 3 For further detailed description, the rolling body 2 can be set as the first rolling body 21 and the second rolling body 22 respectively abutted on the same side of the workpiece 3 to be processed. The first rolling body 21 and the second rolling body 22 can be spaced apart from each other at the initial position, and the directions of the first type of movement L1 and the second type of movement L2 of the first rolling body 21 are both set to be opposite to the directions of the first type of movement L1 and the second type of movement L2 of the second rolling body 22. In this way, the first trajectory of the first type of movement L1 of the first rolling body 21 and the first trajectory of the first type of movement L1 of the second rolling body 22 can jointly enclose the outer peripheral surface contour of the fitting body 1, so that the workpiece 3 to be processed can be bent under the joint action of the first rolling body 21, the second rolling body 22 and the bending guide part 11 to form a frame part surrounding the outer peripheral surface contour of the fitting body 1. Of course, the head and tail ends of the frame part are not connected and closed.
[0073] The above specific setting method of the rolling body 2 has the beneficial effects of simple structure and being able to efficiently and quickly realize bending the workpiece 3 to be processed into a frame part through the coordinated cooperation of the first rolling body 21 and the second rolling body 22.
[0074] It can be understood that the present application does not specifically limit the specific setting method of the rolling elements 2. The third rolling element, the fourth rolling element, etc. can be continuously set, and it is only necessary to realize the bending function of the workpiece 3 to be processed in cooperation with the bending guiding portion 11. That is, those skilled in the art can set and adjust its type according to the actual situation. The above situation is only an exemplary illustration of the ways in which the target part in the present application can be realized, but is not limited to the situations described in the above embodiments.
[0075] In addition, it should be noted that the trajectory of the first rolling element 21 performing the first type of movement L1 and the trajectory of the second rolling element 22 performing the first type of movement L1 can at least partially overlap, and the overlapping part of the trajectories can, but is not limited to, be at the head end and / or the tail end of the two trajectories. Moreover, in order to avoid mutual interference between the first rolling element 21 and the second rolling element 22 during the movement process, the time periods of the two performing the first type of movement L1 can be partially staggered or completely staggered to ensure that the movement trajectories of the two do not interfere with each other. Moreover, the outer peripheral surface contour of the mating body 1 can be completely surrounded by the movement trajectories of the first rolling element 21 and the second rolling element 22 to ensure that the workpiece 3 to be processed can be bent into a complete annular structure.
[0076] In an implementable manner, a plurality of bending guiding portions 11 are convexly provided in the outer peripheral surface contour of the mating body 1; the plurality of bending guiding portions 11 can respectively cooperate with the rolling elements 2 to bend the workpiece 3 to be processed in at least two different directions.
[0077] For example, in Figure 1 a further detailed description, Figure 1 it is exemplarily shown that four bending guiding portions 11 are convexly provided in the outer peripheral surface contour of the mating body 1, and the four bending guiding portions 11 can be specifically spaced in the corners of the outer peripheral surface contour of the mating body 1 in the form of an annular array or a rectangular array. In this way, when the rolling element 2 performs the first type of movement L1 and moves to correspond to a bending guiding portion 11, it can cooperate with the bending guiding portion 11 to bend the workpiece 3 to be processed in one direction.
[0078] Of course, the bending guiding directions and the relative positions of the above-mentioned plurality of bending guiding portions 11 can be flexibly adjusted and set according to the actual bending requirements.
[0079] The above specific setting method of the bending guiding portion 11 has the beneficial effects of simple structure, being able to respectively cooperate with the rolling elements 2, and realizing the sequential bending of multiple places of the workpiece 3 to be processed.
[0080] It is understandable that the present application does not specifically limit the setting manner of the bending guide portion 11, that is, those skilled in the art can set and adjust its type according to the actual situation. The above situation is only an exemplary description of the ways in which the target part in the present application can be implemented, but is not limited to the situations described in the above embodiments.
[0081] In an implementable manner, the outer peripheral surface profile of the bending guide portion 11 has an arc-shaped pressing surface 111; the radian of multiple arc-shaped pressing surfaces 111 is the same or different, and the radius of the radian of multiple arc-shaped pressing surfaces 111 is the same or different; the arc-shaped pressing surface 111 can respectively guide and bend the workpiece 3 to be processed.
[0082] For example, in combination Figure 1 For further detailed description, at this time Figure 1 each bending guide portion 11 has an arc-shaped pressing surface 111 provided in its outer peripheral surface profile, and Figure 1 the radian and the radian radius of the arc-shaped pressing surface 111 in each bending guide portion 11 can be set to be equal. In this way, when the rolling elements 2 respectively move along the first trajectory to correspond to the bending guide portion 11, the outer peripheral surface of the rolling elements 2 can respectively cooperate with the same arc-shaped pressing surface 111, and the multiple parts of the workpiece 3 to be processed are bent at the same angle and the same radius in sequence, so that the workpiece 3 to be processed can finally be bent to form a regular frame body with consistent corners at multiple places. For example, it can form Figure 3 a rectangular frame member with the four corners in the shape of the same arc, and of course, it can also be formed into a regular pentagon frame member, a regular hexagon frame member, etc. with the corners in the shape of the same arc.
[0083] In addition, the arc-shaped pressing surfaces 111 in multiple bending guide portions 11 can also be set to have equal radian but unequal arc radii, so that each bending guide portion 11 can bend the workpiece 3 to be processed to form bending portions with the same angle but different radii.
[0084] Or, the arc-shaped pressing surfaces 111 in multiple bending guide portions 11 can also be set to have unequal radian but equal arc radii, so that each bending guide portion 11 can bend the workpiece 3 to be processed to form bending portions with different angles but the same radius.
[0085] Or, the arc-shaped pressing surfaces 111 in multiple bending guide portions 11 can also be set to have both unequal radian and unequal arc radii, so that each bending guide portion 11 can bend the workpiece 3 to be processed to form bending portions with different angles and different radii.
[0086] The specific setting modes of the multiple bending guiding parts 11 can flexibly generate various bending effects. In this way, when the workpiece 3 to be processed is bent by each bending guiding part 11, bends with specific required angles and specific required radii can be correspondingly formed, ensuring that different bending design requirements can be flexibly met and fully adapted. It can be understood that the present application does not specifically limit the setting mode of the arc-shaped pressing surface 111 in the bending guiding part 11. Some smooth curved surfaces and parabolic surfaces can also be correspondingly set in the outer peripheral surface contour of the bending guiding part 11, and the workpiece 3 to be processed can also be bent in cooperation with the rolling body 2. That is, those skilled in the art can set and adjust its type according to the actual situation. The above situation is only an exemplary illustration of how the target part in the present application can be realized, but is not limited to the situations described in the above embodiments.
[0087] In addition, the embodiment of the present disclosure also provides a method for manufacturing a frame part, and the method includes:
[0088] S1 - Place the workpiece 3 to be processed in the limiting space between the mating body 1 and the rolling body 2, so that the rolling body 2 and the bending guiding part 11 of the mating body 1 are respectively in contact with both sides of the workpiece 3 to be processed;
[0089] S2 - Control the rolling body 2 to perform a first type of movement L1 along a first trajectory and perform a second type of movement L2 around the rotation axis of the rolling body 2 to obtain a bent frame part;
[0090] S3 - Weld the bent frame part to obtain a first frame part 31;
[0091] Wherein, the movement directions of the first type of movement L1 and the second type of movement L2 are the same;
[0092] The first trajectory includes a sub-track segment parallel to the outer peripheral surface contour of the bending guiding part 11;
[0093] The rolling body 2 and the bending guiding part 11 jointly bend the workpiece 3 to be processed, and the rolling body 2 generates rolling friction with one side of the workpiece 3 to be processed, and the bending guiding part 11 generates static friction with the other side of the workpiece 3 to be processed.
[0094] For example, in combination with Figure 6 For further detailed description, the method for manufacturing a frame part provided by the embodiment of the present disclosure can be specifically but not limited to be applied to the bending tooling provided by the above embodiment of the present disclosure, and can also be applied to other bending devices, as long as the bending device can correspondingly execute the above steps.
[0095] For example, in this method of manufacturing the box body part, step S1 is to limit and fix the inner side wall and outer side wall of the workpiece 3 to be processed by the mating body 1 and the rolling body 2 respectively. This step can be achieved by manual operation of the operator or by automatic operation of the robotic arm. And the workpiece 3 to be processed can, but is not limited to, be clamped and limited before bending by the way that its inner side wall abuts against the bending guide part 11 in the mating body 1 and its outer side wall abuts against the rolling body 2 respectively.
[0096] Step S2 is that the rolling body 2 moves along the first trajectory in the first type of motion L1. When it moves to correspond to the bending guide part 11 in the mating body 1, the two can jointly extrude and bend the workpiece 3 to be processed. In this step, the mating body 1 can be kept stationary and the rolling body 2 can be driven to perform the first type of motion L1. Moreover, the first type of motion L1 can, but is not limited to, be set to rotate around the outer peripheral contour of the mating body 1 at intervals, and its own rotation axis rotates in the same direction as the direction of the first type of motion L1. In this way, when the rolling body 2 moves to the sub-track segment parallel to the outer peripheral surface contour of the bending guide part 11 in the first trajectory, the rolling body 2 and the bending guide part 11 respectively and simultaneously extrude and bend the outer side wall and inner side wall of the workpiece 3 to be processed, so that the outer side wall and inner side wall of the workpiece 3 to be processed are both subjected to extrusion forces during bending, and the problem of cracking on the surface of the outer side wall of the workpiece 3 to be processed during bending can be avoided.
[0097] Moreover, during the extrusion and bending process, static friction is generated between the bending guide part 11 and the inner wall side of the workpiece 3 to ensure that the workpiece 3 to be processed does not have the problem of slipping and misalignment during the extrusion and bending process. When the rolling body 2 extrudes and bends the outer side wall of the workpiece 3 to be processed, the rolling body 2 itself will also rotate in the same direction as the bending direction correspondingly, so that rolling friction is generated between the rolling body 2 and the outer side wall of the workpiece 3 to be processed, greatly reducing the frictional resistance between the rolling body 2 and the outer side wall of the workpiece 3 to be processed during the bending process. In this way, the problem of orange peel texture on the surface of the outer side wall of the workpiece 3 to be processed during bending can be avoided.
[0098] In addition, the outer peripheral surface contour of the bending guide part 11 can be arc-shaped, parabolic-shaped, or other smooth curve shapes. The sub-track segment can be set to the corresponding arc-shaped, parabolic-shaped, or other smooth curve shapes. And for any point P 1 、P 2 …P n on the outer peripheral surface contour of the bending guide part 11, there is a unique corresponding point P 1 ’、P 2 ’…P n ’ in the sub-track segment, and P 1 P 1 ’、P 2 P 2 ’…P nP n The lengths of the line segments formed by corresponding connections are all equal, ensuring that both sides of the workpiece 3 to be processed can always be subjected to uniform and identical bending extrusion forces during the bending process.
[0099] Step S3 is to perform end-to-end welding on the bent frame member to obtain the first frame member 31 with completely closed ends. In this step, the welding method can be, but is not limited to, laser argon arc welding, etc., and the welding operation can be achieved through manual operation by the operator or through automatic operation by the robotic arm.
[0100] This method for manufacturing the frame member can also effectively avoid the problem of cracking on the outer wall surface of the workpiece 3 to be processed during bending, effectively avoid the problem of slippage and dislocation of the workpiece 3 to be processed during the extrusion bending process, effectively avoid the problem of orange peel texture on the outer wall surface of the workpiece 3 caused by bending friction resistance, and can also achieve a beautiful and smooth effect on both the inner and outer wall surfaces when bending metal materials or other materials with a larger thickness. The thick plate parts processed using this method for manufacturing the frame member can be directly used as the appearance parts of the product.
[0101] In an implementable embodiment, step S2 - controlling the rolling body 2 to perform the first type of movement L1 along the first trajectory and the second type of movement L2 around the rotation axis of the rolling body 2 to obtain the bent frame member, includes:
[0102] When the rolling body 2 moves along the first trajectory to a sub-track segment parallel to the outer peripheral surface contour of the bending guide portion 11, the distance between the rolling body 2 and the outer peripheral surface contour of the bending guide portion 11 always remains unchanged.
[0103] For example, in combination with Figure 4 For further illustration, the rolling body 2 always has a point closest to the outer peripheral surface contour of the bending guide portion 11, and the minimum distance between this point and the outer peripheral surface contour of the bending guide portion 11 is denoted as Figure 4 A2 in. When the rolling body 2 is in the working condition of moving along the sub-track segment of the first trajectory, the distance between the rolling body 2 and the outer peripheral surface contour of the bending guide portion 11 is set to be always equal, that is: in the working condition of the rolling body 2 moving along the sub-track segment of the first trajectory, A2 always remains equal; that is: the thickness of the part of the workpiece 3 to be processed that is pressed against the bending guide portion 11 during bending is always equal.
[0104] In addition, it should be supplemented that the thickness of the non-bending part before or after the corresponding bending part of the workpiece 3 to be processed and the bending guide portion 11 can be denoted as Figure 4Among them, A1 should satisfy A1 > A2, and the essential reason for A1 > A2 is that during the actual bending process of the bending part of the workpiece 3 to be processed corresponding to the bending guide part 11, it is caused by the rolling body 2 and the bending guide part 11 squeezing each other from the outer wall and the inner wall respectively. Similarly, when the rolling body 2 moves along the first trajectory to the sub-track section parallel to the outer peripheral surface contour of the bending guide part 11, the distance between the rolling body 2 and the outer peripheral surface contour of the bending guide part 11 is always kept unchanged, that is, the thickness of the part of the workpiece 3 to be processed that is bent by pressing against the outer peripheral surface contour in the bending guide part 11 is always equal. This can ensure that during the actual bending process of the workpiece 3 to be processed, it is caused by the rolling body 2 and the bending guide part 11 squeezing each other from the outer wall and the inner wall respectively, and ensure that there is no cracking phenomenon on the outer wall surface of the workpiece 3 to be processed during bending.
[0105] In an implementable embodiment, before step S1 - placing the workpiece 3 to be processed in the limiting space between the mating body 1 and the rolling body 2, it further includes:
[0106] Stamping a recessed structure part and / or a protruding structure part in the blank workpiece;
[0107] Grinding the inner surface of the recess of the recessed structure part and / or the outer surface of the protrusion of the protruding structure part to obtain the workpiece 3 to be processed.
[0108] For example, in combination with Figure 6 For further detailed description, this step is the S0 step before step S1, and in this S0 step, the recessed structure part stamped in the blank workpiece can include but is not limited to a recessed countersunk card slot or countersunk hole, a recessed through card slot or through hole, etc., and the protruding structure part can include but is not limited to a protruding card head, a protruding platform, a protruding column, etc.
[0109] And, in this S0 step, when grinding the inner surface of the recess of the recessed structure part and / or the outer surface of the protrusion of the protruding structure part, it can specifically but not limitedly adopt CNC machining (Computerized Numerical Control Precision Machining) to process the actual dimensional error of the recessed structure part and / or the protruding structure part to reach the required precision range, so as to obtain the workpiece 3 to be processed that meets the dimensional requirements.
[0110] In an implementable embodiment, step S3 - welding the bent frame part to obtain the first frame part 31, it further includes:
[0111] Processing recessed positioning parts at the head and tail ends of the bent frame part, correspondingly setting fasteners in the recessed positioning parts, and then jointly welding the fasteners and the head and tail ends of the bent frame part to form a welded part;
[0112] Grinding the welded part to be flush with the outer surface of the frame wall of the bent frame part to obtain the first frame part 31.
[0113] For example, in combination with Figure 6 For further detailed description, in this step, when setting the fasteners, it is possible but not limited to riveting the fasteners into the recessed positioning parts at the head and tail ends of the bent frame parts respectively. After the fasteners are installed in the recessed positioning parts, the fasteners can fill and level the recessed positioning parts, or after the fasteners are set in the recessed positioning parts, the fasteners are lower than the outer side surface of the frame of the bent frame part. In this way, when the fasteners and the head and tail ends of the bent frame part are welded together to form a welded part, part of the solder can also be welded and filled into the recessed positioning part, further improving the structural firmness of the bent frame part after welding.
[0114] Moreover, grinding the welded part to be flush with the outer surface of the frame wall of the bent frame part can also be achieved by CNC machining (Computerized Numerical Control Precision Machining) to ensure the accurate grinding degree of the welded part and avoid the problems of excessive or insufficient grinding of the welded part.
[0115] In an implementable embodiment, after step S3 - welding the bent frame part to obtain the first frame part 31, it further includes:
[0116] Adding connecting parts by machining on the inner frame wall of the first frame part 31;
[0117] Preparing an anti-oxidation film on the outer frame wall of the first frame part 31.
[0118] For example, in combination with Figure 5 and Figure 6 For further detailed description, to add connecting parts by machining on the inner frame wall of the first frame part 31, it can specifically adopt the method of riveting + CNC machining to add some other connecting parts in the inner frame wall of the first frame part 31. The connecting parts can be but not limited to rivet connecting parts, snap connecting parts, hook connecting parts, etc., which can be used for subsequent assembly and fixation of the first frame part 31.
[0119] In addition, to prepare an anti-oxidation film on the outer frame wall of the first frame part 31, it can specifically adopt an anodizing process to prepare an anti-oxidation film on the outer frame wall of the first frame part 31, thereby improving the anti-oxidation and corrosion resistance of the outer frame wall of the first frame part 31.
[0120] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present disclosure, "a plurality" means two or more unless otherwise specifically defined.
[0121] As described above, it is only the specific implementation manner of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present disclosure can easily think of changes or substitutions, which should all be covered within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims described above.
Claims
1. A bending tool, comprising: A fitting body having a bending guide portion; A rolling body is spaced apart from the matching body, and a limiting space for limiting the position of a workpiece to be processed is formed between the rolling body and the matching body; Wherein, when the bending tool is bending the workpiece to be processed, the rolling body performs a first type of motion along a first trajectory and performs a second type of motion around the rotation axis of the rolling body; The first type of motion and the second type of motion have the same motion direction, and the first trajectory includes a sub-track segment parallel to the outer peripheral surface contour of the bending guide portion; When the rolling body moves along the sub-track segment, the rolling body and the bending guide part jointly bend the workpiece to be processed, and the rolling body generates rolling friction with one side of the workpiece to be processed, and the bending guide part generates static friction with the other side of the workpiece to be processed.
2. According to the bending tool according to claim 1, when the rolling body moves along the sub-track segment, the distance between the rolling body and the outer peripheral surface contour of the bending guide portion is always equal.
3. The bending tool according to claim 1, wherein the rolling body comprises a first rolling body and a second rolling body; The first rolling body and the second rolling body are respectively disposed in contact with the same side of the workpiece to be processed; The direction in which the first rolling body performs the first type of motion is opposite to the direction in which the second rolling body performs the first type of motion; The direction in which the first rolling body performs the second type of motion is opposite to the direction in which the second rolling body performs the second type of motion; Furthermore, the movement trajectories of the first rolling body and the second rolling body can together close the outer peripheral surface contour of the matching body.
4. The bending tool according to claim 1, wherein a plurality of the bending guide portions are protrudingly provided in the outer peripheral surface contour of the mating body; The plurality of bending guide portions can respectively cooperate with the rolling body to bend the workpiece to be processed in at least two different directions.
5. The bending tool according to claim 4, wherein the outer peripheral surface profile of the bending guide portion has an arc-shaped bending surface; The curvatures of the multiple arc-shaped folding surfaces are the same or different, and the curvature radii of the multiple arc-shaped folding surfaces are the same or different; The arc-shaped bending surfaces can guide and bend the workpieces to be processed respectively.
6. A method for manufacturing a frame member, comprising: Placing the workpiece to be processed in the limited space between the matching body and the rolling body, so that the rolling body and the bending guide part of the matching body are respectively in contact with the two sides of the workpiece to be processed; Controlling the rolling body to perform a first type of motion along a first trajectory and to perform a second type of motion around a rotation axis of the rolling body to obtain a bent frame member; Welding the bent frame member to obtain a first frame member; Wherein, the first type of motion and the second type of motion have the same motion direction; The first track includes a sub-track segment parallel to the outer peripheral surface profile of the bending guide portion; The rolling element and the bending guide part bend the workpiece to be processed together, and the rolling element generates rolling friction with one side of the workpiece to be processed, and the bending guide part generates static friction with the other side of the workpiece to be processed.
7. The method for manufacturing a frame member according to claim 6, controlling the rolling body to perform a first type of motion along a first trajectory and to perform a second type of motion around the rotation axis of the rolling body to obtain a bent frame member, comprising: When the rolling body moves along the first trajectory to a sub-track section parallel to the outer circumferential surface contour of the bending guide portion, the distance between the rolling body and the outer circumferential surface contour of the bending guide portion remains unchanged.
8. The method for manufacturing a frame member according to claim 6, before placing the workpiece to be processed in the limiting space between the matching body and the rolling body, further comprising: Punching a concave structure portion and / or a convex structure portion in the blank workpiece; The concave inner surface of the concave structure portion and / or the convex outer surface of the convex structure portion are ground to obtain the workpiece to be processed.
9. The method for manufacturing a frame member according to claim 6, welding the bent frame member to obtain a first frame member, further comprising: A concave positioning portion is processed correspondingly at the head and tail ends of the bent frame member, and a fastener is correspondingly arranged in the concave positioning portion, and then the fastener and the head and tail ends of the bent frame member are welded together to form a welding portion; The welding portion is ground to be flush with the outer surface of the frame wall of the bent frame member to obtain the first frame member.
10. The method for manufacturing a frame member according to claim 9, after welding the bent frame member to obtain a first frame member, further comprising: Processing and adding connecting pieces on the inner frame wall of the first frame member; An anti-oxidation film is prepared on the outer frame wall of the first frame member.