Bending tooling
By using a bending fixture with a positioning plate and a limit ring, the problem of low workpiece bending processing efficiency is solved, achieving efficient and convenient workpiece bending processing and improving forming quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANXI FENXI HEAVY IND CO LTD
- Filing Date
- 2025-06-05
- Publication Date
- 2026-05-26
AI Technical Summary
Existing technologies for workpiece bending processes are inefficient, make it difficult to guarantee dimensions, are challenging to process, and negatively impact quality.
A bending fixture including a positioning plate, a first limit ring, and a second limit ring is used to fix and shape the workpiece through the limit ring, and the bending part is used to realize the bending processing of the workpiece.
It improves bending processing efficiency, ensures the forming quality of workpieces and the convenience of operation, avoids the inconvenience of bending by fitter, and ensures that the workpiece does not deform during the bending process.
Smart Images
Figure CN224273076U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of machining, and in particular to a bending tool. Background Technology
[0002] One of the company's products has an expansion ring used for fastening and limiting. The material of this part has a high springback coefficient, making it difficult to guarantee the bending dimensions and resulting in high processing difficulty. The bending process performed by fitters is inefficient, seriously affecting both processing efficiency and quality.
[0003] There is currently no effective solution to the problem of low efficiency in workpiece bending processing in existing technologies. Utility Model Content
[0004] To address the aforementioned problems, this utility model provides a bending fixture that uses a first limiting ring and a second limiting ring to limit and shape the workpiece, and uses the bending part as a fixed point to achieve workpiece shaping, thereby solving the problem of low workpiece bending processing efficiency.
[0005] To achieve the above objectives, this utility model provides a bending fixture, comprising: a positioning plate, wherein the positioning plate is provided with a first limiting ring and a second limiting ring; the diameter of the first limiting ring is smaller than the diameter 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 ring has an opening corresponding to the opening of the workpiece to be processed; the positioning plate is also provided with a bending member, which is disposed inside the first limiting ring and is used to bend the opening of the workpiece to be processed.
[0006] As an optional implementation, the first limiting ring includes first positioning elements evenly distributed along the circumference; the positioning plate is provided with first positioning holes corresponding to each first positioning element.
[0007] As an optional implementation, the first positioning hole is a through hole; the first positioning element is a positioning pin.
[0008] As an optional implementation, the second limiting ring includes second positioning elements evenly distributed along the circumference; the positioning plate is provided with second positioning holes corresponding to each second positioning element.
[0009] As an optional implementation, the second positioning hole is a threaded hole; the second positioning element is a screw.
[0010] As an optional implementation, the positioning plate has multiple sets of third positioning holes corresponding to the bent parts, and each set of third positioning holes corresponds to a workpiece of a certain size.
[0011] As an optional implementation, the first positioning member includes a bent positioning member for an open bend, and the relative position of the bent positioning member and the bent member is set according to the bending requirements of the workpiece to be processed.
[0012] As an optional implementation, there are two bending members, each corresponding to the open bending portion of the workpiece to be processed.
[0013] On the other hand, this utility model also provides a bending method, which uses the above-mentioned bending fixture to perform bending, including: cutting the ring that has been shaped by the turning 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 allowance 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 part on the same side, and then bending the other side of the opening towards the bending part on the same side; removing the positioning plate from the vise, rotating it 90° and placing it on the platform, and drawing the height dimension of the opening of the workpiece to be processed with a height gauge; removing the second limiting ring, taking out the workpiece to be processed, and leveling the workpiece to obtain the shaped workpiece.
[0014] The above technical solution has the following beneficial effects: it avoids the inconvenience of bending the workpiece after scribing, limits the workpiece to be processed by the limiting ring, and ensures that the workpiece will not deform during the bending process, thereby improving bending efficiency, ease of operation and the forming quality of the workpiece. Attached Figure Description
[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0016] Figure 1 This is a schematic diagram of the structure of the expansion ring provided by existing technology;
[0017] Figure 2 This is a schematic diagram of the bending tool provided in an embodiment of the present invention.
[0018] Reference numerals: 1-Workpiece to be processed; 101-Bent section; 2-Positioning plate; 3-First limiting ring; 301-Bent positioning component; 4-Second limiting ring; 5-Bent component. Detailed Implementation
[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0020] Figure 1 This is a schematic diagram of the structure of the expansion ring provided by existing technology, such as... Figure 1 As shown, the workpiece 1 to be processed in the prior art, namely the expansion ring, is a ring structure with an opening, and both ends of the opening are bent inward to form a bent portion 101. The prior art processing method for the expansion ring is usually to first cut one end of the ring from the spiral steel wire, and then process it by scribe and then by fitter. However, this method is difficult to process, has poor forming quality, and seriously affects processing efficiency.
[0021] To address the problems of high difficulty and low efficiency in bending workpieces in existing technologies, this utility model provides a bending fixture. Figure 2 This is a structural schematic diagram of the bending tooling provided in an embodiment of the present invention, as shown below. Figure 2 As shown, the bending fixture includes: a positioning plate 2, which has a first limiting ring 3 and a second limiting ring 4; the diameter of the first limiting ring 3 is smaller than the diameter 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 has an opening corresponding to the opening of the workpiece to be processed; the positioning plate 2 is also provided with a bending member 5, which is located inside the first limiting ring 3 and is used to bend the opening of the workpiece to be processed.
[0022] The positioning plate 2 is rectangular in shape, making it easy to clamp onto a bench vise.
[0023] The first limiting ring 3 is disposed on the positioning plate 2. The outermost diameter of the first limiting ring 3 should be consistent with the inner dimensions 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 allows the annular steel wire to be bent relative to the two ends of the opening to form the opening of the workpiece.
[0024] The second limiting ring 4 is located on the positioning plate 2, outside the first limiting ring 3. The inner diameter of the second limiting ring 4 should be consistent with the outer dimensions 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 part 5 is provided inside the first limiting ring 3. When bending is performed through the first limiting ring 3, the bending is marked as successful when the bent part reaches the position of the bending part 5.
[0027] As an optional implementation, the first limiting ring 3 includes first positioning members evenly distributed along the circumference; the positioning plate 2 has first positioning holes corresponding to each first positioning member.
[0028] The first limiting ring 3 includes multiple first positioning elements, which are evenly distributed on the circumference of the first limiting ring 3. The positioning plate 2 has multiple first positioning holes on the same circumference, which correspond one-to-one with the multiple first positioning elements. The first positioning elements are detachably connected to the first positioning holes.
[0029] As an optional implementation, the first positioning hole is a through hole; the first positioning element is a positioning pin.
[0030] The first limiting ring 3 includes multiple positioning pins, which are evenly distributed on the circumference of the first limiting ring 3, and each positioning pin is located in a corresponding through hole.
[0031] As an optional implementation, the second limiting ring 4 includes second positioning elements evenly distributed along the circumference; the positioning plate 2 has second positioning holes corresponding to each second positioning element.
[0032] The second limiting ring 4 includes multiple second positioning elements, which are evenly distributed on the circumference of the second limiting ring 4. The positioning plate 2 has multiple second positioning holes on the same circumference, which correspond one-to-one with the multiple second positioning elements. The second positioning elements and the second positioning holes are detachably connected.
[0033] As an optional implementation, the second positioning hole is a threaded hole; the second positioning element is a screw.
[0034] The second limiting ring 4 includes multiple screws, which are evenly distributed on the circumference of the second limiting ring 4, and each screw is threadedly connected to the corresponding threaded hole.
[0035] When installing the workpiece to be processed, first place the workpiece outside the first limiting ring 3, and then install the second limiting ring 4 to fix the workpiece to be processed.
[0036] As an optional implementation, the positioning plate 2 has multiple sets of third positioning holes corresponding to the bent part 5, and each set of third positioning holes corresponds to a workpiece of a certain size.
[0037] Multiple sets of third positioning holes are provided on the positioning hole. The position of the third positioning hole is determined according to the workpiece with different bending requirements. When bending a certain type of workpiece, the corresponding third positioning hole can be selected to install the bending part 5 to meet the specific bending requirements.
[0038] As an optional implementation, the first positioning member includes a bent positioning member 301 for an open bend, and the relative position of the bent positioning member 301 and the bent member 5 is set according to the bending requirements of the workpiece to be processed.
[0039] The bent positioning component 301 in the first positioning component is the positioning component at both ends of the opening of the first limiting ring 3. These two bent positioning components 301 are used to bend the opening of the workpiece to be processed. The relative position of the bent positioning component 301 and the bent component 5 should correspond to the size of the bent part of the workpiece to be processed.
[0040] As an optional implementation, there are two bending members 5, each corresponding to the open bending portion of the workpiece to be processed.
[0041] This utility model embodiment provides a bending method, which uses the above-mentioned bending fixture to perform bending, including:
[0042] S1. Cut the ring that has been shaped by the turning process to obtain the workpiece to be processed;
[0043] The machining process involves winding the wire into a spiral shape. Before bending, the wire needs to be cut to the appropriate length to serve as the workpiece. The length of the workpiece to be processed should be greater than the length of the finished workpiece to allow for subsequent adjustments.
[0044] S2. Clamp the positioning plate in the vise;
[0045] Clamp the positioning plate onto the vise to ensure a stable clamping state.
[0046] S3. Place the workpiece to be processed outside the first limit ring, and leave the same allowance at both ends of the opening, and install the second limit ring in place;
[0047] Place the workpiece to be processed outside the first limiting ring, leaving the same allowance at both ends of the opening, and then install the second limiting ring in place to fix the workpiece to be processed.
[0048] S4. Use a bending rod to bend one side of the opening of the workpiece to be processed toward the bending part on the same side, and then bend the other side of the opening toward the bending part on the same side.
[0049] Use a bent rod to first complete the bend at one open end, and then complete the bend at the other open end.
[0050] S5. Remove the positioning plate from the vise, rotate it 90° and place it on the platform. Use a height ruler to draw the height dimension of the opening of the workpiece to be processed.
[0051] Remove the positioning plate from the bench vise, rotate 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 obtain the shaped workpiece.
[0053] After removing the second limit ring (and 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 the front and back sides of the part is ≤0.2mm.
[0054] The above technical solution has the following beneficial effects: it avoids the inconvenience of bending the workpiece after scribing, limits the workpiece to be processed by the limiting ring, and ensures that the workpiece will not deform during the bending process, thereby improving bending efficiency, ease of operation and the forming quality of the workpiece.
[0055] The above-described specific embodiments of the utility model further illustrate the purpose, technical solution, and beneficial effects of the utility model. It should be understood that the above content is only a specific embodiment of the utility model and is not intended to limit the scope of protection of the utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the utility model should be included within the scope of protection of the utility model.
Claims
1. A bending tool characterized by comprising: include: A positioning plate, wherein the positioning plate is provided with a first limiting ring and a second limiting ring; The diameter of the first limiting ring is smaller than the diameter 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 ring has an opening corresponding to the opening of the workpiece to be processed. The positioning plate is also provided with a bending component, which is located inside the first limiting ring and is used to bend the opening of the workpiece to be processed.
2. The bending fixture according to claim 1, characterized in that: The first limiting ring includes first positioning elements evenly distributed along the circumference; The positioning plate has a first positioning hole corresponding to each first positioning component.
3. The bending fixture according to claim 2, characterized in that: The first positioning hole is a through hole; The first positioning component is a positioning pin.
4. The bending fixture according to claim 1, characterized in that: The second limiting ring includes second positioning elements evenly distributed along the circumference; The positioning plate has a second positioning hole corresponding to each second positioning element.
5. The bending fixture according to claim 4, characterized in that: The second positioning hole is a threaded hole; The second positioning element is a screw.
6. The bending fixture according to claim 1, characterized in that: The positioning plate has multiple sets of third positioning holes corresponding to the bent parts, and each set of third positioning holes corresponds to a workpiece of a certain size.
7. The bending fixture according to claim 3, characterized in that: The first positioning component includes a bent positioning component for open bends, and the relative position of the bent positioning component and the bent component is set according to the bending requirements of the workpiece to be processed.
8. The bending fixture according to claim 1, characterized in that: There are two bent parts, each corresponding to the open bent portion of the workpiece to be processed.