Bending tool and bending method

Abstract

The embodiment of the invention discloses a bending tool and a bending method, and the bending tool comprises a positioning plate which is provided with a first limiting ring and a second limiting ring; the diameter of the first limiting ring is smaller than that of the second limiting ring, and a space between the first limiting ring and the second limiting ring is used for fixing a workpiece to be machined; the first limiting piece is provided with an opening corresponding to an opening of a workpiece to be machined. The positioning plate is further provided with a bending piece, the bending piece is arranged in the first limiting ring and used for bending an opening of the workpiece to be machined, the problem that bending by a bench worker is inconvenient after scribing is avoided, the workpiece to be machined is limited through the limiting ring, it is guaranteed that the workpiece to be machined does not deform in the bending process, and the machining precision is improved. And the bending efficiency, the operation convenience and the workpiece forming quality are improved.

Description

Technical Field

[0001] The present invention relates to the field of machining, and particularly to a bending tooling and a bending method. Background Art

[0002] A certain type of product of the company has a "expansion ring" for fastening and limiting. The part material has a high springback coefficient, and it is difficult to ensure the bending dimensions, resulting in great processing difficulty. The bending process by fitters is inefficient, seriously affecting the processing efficiency and quality.

[0003] In view of the problem of low efficiency in the bending process of workpieces in the prior art, there is currently no effective solution. Summary of the Invention

[0004] To solve the above problems, the present invention provides a bending tooling and a bending method. The workpiece is limited and calibrated by the first limiting ring and the second limiting ring, and the calibration of the workpiece is realized by using the bending part as a fixed point, so as to solve the problem of low efficiency in the bending process of workpieces.

[0005] To achieve the above object, the present invention provides a bending tooling, including: a positioning plate, on which a first limiting ring and a second limiting ring are provided; the diameter of the first limiting ring is smaller than that of the second limiting ring, and the space between the first limiting ring and the second limiting ring is used to fix the workpiece to be processed; the first limiting member is provided with an opening corresponding to the opening of the workpiece to be processed; a bending part is further provided on the positioning plate, and the bending part is arranged inside the first limiting ring and is used to bend the opening of the workpiece to be processed.

[0006] As an optional implementation manner, the first limiting ring includes first positioning members uniformly distributed along the circumference; first positioning holes corresponding to each first positioning member are provided on the positioning plate.

[0007] As an optional implementation manner, the first positioning holes are through holes; the first positioning members are positioning pins.

[0008] As an optional implementation manner, the second limiting ring includes second positioning members uniformly distributed along the circumference; second positioning holes corresponding to each second positioning member are provided on the positioning plate.

[0009] As an optional implementation manner, the second positioning holes are threaded holes; the second positioning members are screws.

[0010] As an optional implementation manner, the positioning plate is provided with multiple groups of third positioning holes corresponding to the bending part, and each group of third positioning holes corresponds to a workpiece of a certain size.

[0011] As an alternative embodiment, the first positioning member includes a bending positioning member for opening bending, and the relative positions of the bending positioning member and the bending member are set according to the bending requirements of the workpiece to be processed.

[0012] As an alternative embodiment, there are two bending members, respectively corresponding to the opening bending parts of the workpiece to be processed.

[0013] On the other hand, the present invention also provides a bending method, which uses the above-mentioned bending tooling for bending, including: cutting the ring completed by the winding process of the lathe operation to obtain the workpiece to be processed; clamping the positioning plate on the vise; placing the workpiece to be processed outside the first limiting ring, and leaving the same margin at both ends of the opening, and installing the second limiting ring in place; using a bending rod to bend one side of the opening of the workpiece to be processed towards the bending member on the same side, and then bending the other side of the opening towards the bending member on the same side; removing the positioning plate from the vise, turning it 90° and placing it on the platform, and using a height gauge to draw the height dimension of the opening of the workpiece to be processed; removing the second limiting ring, taking out the workpiece to be processed, and leveling the workpiece to be processed to obtain the formed workpiece.

[0014] The above technical solution has the following beneficial effects: avoiding the inconvenience of benchwork bending after scribing, limiting the workpiece to be processed through the limiting ring, and ensuring that the workpiece to be processed will not deform during the bending process, improving the bending efficiency, operation convenience and forming quality of the workpiece. Description of the Drawings

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0016] Figure 1 is a schematic structural diagram of an expansion ring provided by the prior art;

[0017] Figure 2 is a schematic structural diagram of the bending tooling provided by the embodiment of the present invention.

[0018] Reference numerals: 1 - workpiece to be processed; 101 - bending part; 2 - positioning plate; 3 - first limiting ring; 301 - bending positioning member; 4 - second limiting ring; 5 - bending member. Detailed Embodiments

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0020] Figure 1 is a structural schematic diagram of an expansion ring provided by the prior art. As Figure 1 shown, the workpiece 1 to be processed in the prior art, that is, the expansion ring, is an annular structure with an opening, and both ends of the opening bend inward to form a bent portion 101. In the prior art, the processing method of the expansion ring is usually to first cut a ring from a spiral steel wire and then process it by scribing and benchwork. However, this method has great processing difficulty and poor forming quality, seriously affecting the processing efficiency.

[0021] To solve the problems of great difficulty and low efficiency in the bending processing of workpieces in the prior art, an embodiment of the present invention provides a bending tooling. Figure 2 is a structural schematic diagram of the bending tooling provided by the embodiment of the present invention. As Figure 2 shown, the bending tooling includes: a positioning plate 2, and the positioning plate is provided with a first limiting ring 3 and a second limiting ring 4; the diameter of the first limiting ring 3 is smaller than that of the second limiting ring 4, and the space between the first limiting ring 3 and the second limiting ring 4 is used to fix the workpiece to be processed; the first limiting member is provided with an opening corresponding to the opening of the workpiece to be processed; a bending member 5 is further provided on the positioning plate 2, and the bending member 5 is arranged inside the first limiting ring 3 and is used to bend the opening of the workpiece to be processed.

[0022] The outer shape of the positioning plate 2 is rectangular, which is convenient for clamping on a bench vise.

[0023] The first limiting ring 3 is arranged on the positioning plate 2, and the outermost diameter of the first limiting ring 3 should be consistent with the inner dimension of the workpiece to be processed. The first limiting ring 3 is detachably connected to the positioning plate 2. The first limiting ring 3 is also provided with an opening corresponding to the workpiece to be processed, which can bend the annular steel wire relative to both ends of the opening to form the opening of the workpiece.

[0024] The second limiting ring 4 is arranged on the positioning plate 2 and is located outside the first limiting ring 3. The inner diameter of the second limiting ring 4 should be consistent with the outer dimension of the workpiece to be processed.

[0025] An annular space is formed between the first limiting ring 3 and the second limiting ring 4 for clamping the workpiece to be processed, and the size of the annular space is consistent with the size of the workpiece to be processed.

[0026] Since the workpiece to be processed still has a bending requirement at the opening, a bending member 5 is further provided inside the first limiting ring 3. When bending is performed through the first limiting ring 3, the bent part reaching the position of the bending member 5 indicates the success of bending.

[0027] As an alternative embodiment, the first limiting ring 3 includes first positioning members evenly distributed along the circumference; the positioning plate 2 is provided with first positioning holes corresponding to each first positioning member.

[0028] The first limiting ring 3 includes a plurality of first positioning members, and the plurality of first positioning members are evenly distributed on the circumference where the first limiting ring 3 is located. The positioning plate 2 is provided with a plurality of first positioning holes on the same circumference, corresponding to the plurality of first positioning members one by one, and the first positioning members are detachably connected to the first positioning holes.

[0029] As an alternative embodiment, the first positioning hole is a through hole; the first positioning member is a positioning pin.

[0030] The first limiting ring 3 includes a plurality of positioning pins, and the plurality of positioning pins are evenly distributed on the circumference where the first limiting ring 3 is located. Each positioning pin is disposed in the corresponding through hole.

[0031] As an alternative embodiment, the second limiting ring 4 includes second positioning members evenly distributed along the circumference; the positioning plate 2 is provided with second positioning holes corresponding to each second positioning member.

[0032] The second limiting ring 4 includes a plurality of second positioning members, and the plurality of second positioning members are evenly distributed on the circumference where the second limiting ring 4 is located. The positioning plate 2 is provided with a plurality of second positioning holes on the same circumference, corresponding to the plurality of second positioning members one by one, and the second positioning members are detachably connected to the second positioning holes.

[0033] As an alternative embodiment, the second positioning hole is a threaded hole; the second positioning member is a screw.

[0034] The second limiting ring 4 includes a plurality of screws, and the plurality of screws are evenly distributed on the circumference where the second limiting ring 4 is located. Each screw is threadedly connected to the corresponding threaded hole.

[0035] When installing the workpiece to be processed, first place the workpiece to be processed outside the first limiting ring 3, and then install the second limiting ring 4 to fix the workpiece to be processed.

[0036] As an alternative embodiment, the positioning plate 2 is provided with multiple groups of third positioning holes corresponding to the bending member 5, and each group of third positioning holes corresponds to a workpiece of a certain size.

[0037] Multiple groups of third positioning holes are provided on the positioning holes. The positions of the third positioning holes are provided according to workpieces with different bending requirements. When bending a workpiece of a certain model, the corresponding third positioning holes can be selected to install the bending part 5 to meet the specific bending requirements.

[0038] As an alternative embodiment, the first positioning member includes a bending positioning member 301 for opening bending. The relative positions of the bending positioning member 301 and the bending part 5 are set according to the bending requirements of the workpiece to be processed.

[0039] The bending positioning member 301 in the first positioning member is the positioning member at both ends of the opening of the first limiting ring 3. These two bending positioning members 301 are used to bend the opening of the workpiece to be processed. The relative positions of the bending positioning member 301 and the bending part 5 should correspond to the dimensions of the bent part of the workpiece to be processed.

[0040] As an alternative embodiment, there are two bending parts 5, which respectively correspond to the opening bending parts of the workpiece to be processed.

[0041] The embodiment of the present invention provides a bending method, which uses the above-mentioned bending tooling for bending, including:

[0042] S1. Cut the ring completed by the winding process in the lathe work process to obtain the workpiece to be processed;

[0043] In the lathe work process, the iron wire is wound to obtain a spiral steel wire ring. Before bending, the steel wire of the corresponding length needs to be cut to be used as the workpiece to be processed. The length of the workpiece to be processed should be greater than the length of the formed workpiece to leave a margin for the follow-up.

[0044] S2. Clamp the positioning plate on the vise;

[0045] Clamp the positioning plate on the vise to ensure a stable clamping state.

[0046] S3. Place the workpiece to be processed outside the first limiting ring, and leave the same margin at both ends of the opening, and install the second limiting ring in place;

[0047] Place the workpiece to be processed outside the first limiting ring, and leave the same margin at both ends of the opening, and install the second limiting ring in place, so as to fix the workpiece to be processed.

[0048] S4. Use the bending rod to bend one side of the opening of the workpiece to be processed towards the bending part on the same side, and then bend the other side of the opening towards the bending part on the same side;

[0049] Use the bending rod to first complete the bending of one opening end, and then complete the bending of the other opening end.

[0050] S5. Remove the positioning plate from the vise, turn it 90° and place it on the platform. Use a height gauge to mark the height dimension of the opening of the workpiece to be processed.

[0051] Remove the positioning plate from the bench vise, turn it 90 degrees and place it on the platform. Use a height gauge to mark the height dimension of the opening of the part.

[0052] S6. Remove the second limit ring, take out the workpiece to be processed, and level the workpiece to be processed to obtain a formed workpiece.

[0053] After removing the second limit ring (remove the first limit ring if necessary), remove the workpiece to be processed, and use a hammer to level the bent part to ensure that the flatness of both sides of the part is ≤0.2 mm.

[0054] The above technical solution has the following beneficial effects: It avoids the inconvenience of manual bending after scribing. The workpiece to be processed is limited by the limit ring, and it is ensured that the workpiece to be processed will not deform during the bending process, improving the bending efficiency, operation convenience and forming quality of the workpiece.

[0055] The specific embodiments of the above invention further elaborate on the purpose, technical solution and beneficial effects of the present invention. It should be understood that the above content is only the specific embodiments of the present invention and is not used to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A bending tooling, characterized in that, Including: A positioning plate, on which a first limiting ring and a second limiting ring are provided; The diameter of the first limiting ring is smaller than that of the second limiting ring, and the space between the first limiting ring and the second limiting ring is used to fix the workpiece to be processed; an opening corresponding to the opening of the workpiece to be processed is provided on the first limiting member; A bending member is further provided on the positioning plate, and the bending member is arranged inside the first limiting ring and is used for bending the opening of the workpiece to be processed.

2. The bending tooling according to claim 1, characterized in that: The first limiting ring includes first positioning members evenly distributed along the circumference; First positioning holes corresponding to each first positioning member are provided on the positioning plate.

3. The bending tooling according to claim 2, characterized in that: The first positioning hole is a through hole; The first positioning member is a positioning pin.

4. The bending tooling according to claim 1, characterized in that: The second limiting ring includes second positioning members evenly distributed along the circumference; Second positioning holes corresponding to each second positioning member are provided on the positioning plate.

5. The bending tooling according to claim 4, characterized in that: The second positioning hole is a threaded hole; The second positioning member is a screw.

6. The bending tooling according to claim 1, characterized in that: The positioning plate is provided with multiple groups of third positioning holes corresponding to the bending member, and each group of third positioning holes corresponds to a workpiece of a certain size.

7. The bending tooling according to claim 3, characterized in that: Among the first positioning members, there is a bending positioning member for opening bending, and the relative position between the bending positioning member and the bending member is set according to the bending requirements of the workpiece to be processed.

8. The bending tooling according to claim 1, characterized in that: There are two bending members, which respectively correspond to the opening bending parts of the workpiece to be processed.

9. A bending method, characterized in that, When using the bending tooling according to any one of claims 1-8 for bending, it includes: Cutting the ring completed by winding in the lathe working process to obtain the workpiece to be processed; Clamping the positioning plate on the vise; Placing the workpiece to be processed outside the first limiting ring, leaving the same margin at both ends of the opening, and installing the second limiting ring in place; Using a bending rod to bend one side of the opening of the workpiece to be processed towards the bending member on the same side, and then bending the other side of the opening towards the bending member on the same side; Removing the positioning plate from the vise, turning it 90° and placing it on the platform, and using a height gauge to draw the height dimension of the opening of the workpiece to be processed; Removing the second limiting ring, taking out the workpiece to be processed, and leveling the workpiece to be processed to obtain the formed workpiece.

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