One-time bending forming device, machining system and method for suite type sheet metal parts
By combining a one-time bending forming device for sheet metal parts and an automated electronically controlled press, the problem of bending angle accuracy and consistency of one-way valve parts has been solved, achieving efficient and precise processing, improving processing efficiency and pass rate, and making it suitable for mass production.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- XIAN FLIGHT SELF CONTROL INST OF AVIC
- Filing Date
- 2025-12-27
- Publication Date
- 2026-04-17
AI Technical Summary
Existing technology makes it difficult to guarantee the accuracy and consistency of the bending angle of the one-way valve assembly parts, resulting in assembly difficulties, low processing efficiency, low pass rate, the need for manual repair, and the generation of excess material.
The kit-type sheet metal parts are formed by one-time bending, including a female mold, a male mold, a positioning block and a support block. Combined with an automated electronically controlled press, the kit is formed by efficient bending through precise pressure-displacement control.
It improves processing efficiency and precision, ensures the parallelism of the kit end faces and the consistency of bending angles, reduces the need for subsequent repairs, improves the pass rate and quality stability, and is suitable for mass production.
Smart Images
Figure CN121869948A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of mechanical processing technology for one-way valve products, and relates to a one-time bending forming device, processing system and method for sheet metal parts of the kit type. Background Technology
[0002] Because the components of the check valve assembly need to be assembled with other valve bodies, spherical spring seats, and retaining rings, the parallelism of the end face of the assembly will affect the assembly with the retaining ring, thus affecting the tightening force of the subsequent check valve assembly roll. The accuracy and consistency of the bending angle of the assembly will affect the assembly of the spring seat and the valve body. An angle that is too large or lacks consistency will make it extremely difficult to assemble into the valve body, requiring manual adjustment. An angle that is too small will prevent the spring seat from being assembled into the assembly and result in insufficient tightening force of the assembly. Using the traditional manual hammering method, it is impossible to guarantee the accuracy and consistency of the bending angle, the end face of the assembly is prone to tilting, the processing efficiency is poor, the pass rate is low, and adjustment is required in the subsequent assembly process, which will generate excess material. Summary of the Invention
[0003] This invention provides a one-time bending forming device, processing system and method for kit-type sheet metal parts, which has high processing efficiency, good precision control and stable and reliable quality, and can meet the needs of mass production processing.
[0004] The first aspect of the present invention provides a one-time bending forming device for a kit-type sheet metal part. The kit-type sheet metal part includes a central end face and claw-shaped kits evenly distributed around the central end face. The one-time bending forming device for the kit-type sheet metal part includes: a female mold 1, a base 2, a male mold 4, a support block 5, a positioning pin 8, and a positioning block 12. The top of the male mold 4 is connected to the press; The female mold 1 is set on the base 2. A through cavity is set in the center of the female mold 1. The distance between the forming surfaces in the cavity matches the distance between the components of the kit-type sheet metal parts. Positioning pins 8 are provided around the central cavity on the top surface of the female mold 1 for positioning the test piece 10; The bottom of the positioning block 12 is provided with a positioning profile, the shape of which matches the profile of the cavity of the female mold 1. The center of the positioning block 12 is provided with a through hole, the profile of which matches the profile of the male mold 4. The thickness of the positioning profile is determined according to the thickness and clearance requirements of the kit-type sheet metal parts. A support block 5 is slidably installed inside the base 2 to provide demolding space after the specimen 10 is formed.
[0005] Optionally, the clearance between the positioning block 12 and the female mold 1 is less than 0.02 mm; the clearance between the positioning block 12 and the male mold 4 is less than 0.02 mm.
[0006] Optionally, the male mold 4, female mold 1, and support block 5 are all made of stainless steel and hardened by quenching.
[0007] Optionally, the forming surfaces of the male mold 4 and the female mold 1 are inclined surfaces to achieve bending forming of sheet metal parts with different bending angles.
[0008] Optionally, when the support block 5 moves into the base 2, the support block 5 provides rigid support to the deformed end face of the specimen 10; when the support block 5 moves to the outside of the base 2, the deformed specimen 10 is demolded under the movement of the male mold, and the deformed specimen 10 is removed under the reverse movement of the support block 5.
[0009] Optionally, the female mold 1 and the base 2 are positioned by a cylindrical pin 7 and connected and fixed by bolts 9.
[0010] Optionally, the distribution angle of the locating pins 8 around the cavity of the female mold 1 is determined according to the distribution angle of the kit-type sheet metal parts.
[0011] Optionally, the top of the male mold 4 is connected to the press via a conversion sleeve 3. By changing the outer diameter of the conversion sleeve 3, it can be used on presses with different types of chucks.
[0012] The second aspect of this invention provides a processing system for kit-type sheet metal parts, comprising: a one-time bending forming device for kit-type sheet metal parts and an automated electronically controlled press as described in any one aspect of the first aspect; The electrically controlled press is internally equipped with force sensors, displacement sensors, a pressure rod, and a motion control system.
[0013] The third aspect of this invention provides a method for processing sheet metal parts of the kit type, using the processing system described in the second aspect, the processing method comprising the following steps: Fix the female mold 1 and the base 2 on the operating platform of the electric press. Place the positioning block 12 in the cavity of the female mold 2. Assemble the male mold 4 in the positioning hole of the positioning block 12. After fixing the horizontal position of the male mold 4, fix the male mold 4 to the clamp of the electric press through the conversion sleeve 3. After fixing the male mold 4, remove the positioning block 12. The specimen 10 is fixed to the female mold 1 by the locating pin 8; The support block 5 is placed inside the base 2, and is in a rigid support state; the electric control press is started, its pressure-displacement parameters are set, and the press is started to move. The end of the specimen 10 is bent by the relative movement of the male mold 4 and the female mold 1; when the specimen 10 moves to contact the support block 5, the pressure increases, the displacement remains unchanged, the pressure holding time is 10s, the end face of the specimen 10 is shaped, and the specimen 10 is bent into the finished part 11; After shaping, the pressure of the press is reduced to 0N. The support block 5 is removed. The male mold 4 continues to move the finished part 11 until the end of the finished part 11 is completely separated from the cavity of the female mold 1. The support block 5 is moved into the base 2, the finished part 11 is ejected, and the next workpiece is bent.
[0014] This invention provides a one-time bending forming device, processing system and method for kit-type sheet metal parts, which has high processing efficiency, good precision control, high pass rate, and is simple and reliable in subsequent assembly process, with stable quality and no excess material generated. It can meet the bending forming of kit-type sheet metal parts with different angles in mass production. Attached Figure Description
[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. The drawings described below are only some embodiments of the present invention. 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 a one-time bending forming device for a kit-type sheet metal part according to the present invention; Explanation of reference numerals in the attached figures: 1. Female mold, 2. Base, 3. Transformer sleeve, 4. Male mold, 5. Support block, 6. Center positioning pin, 7. Cylindrical pin, 8. Positioning pin, 9. Bolt, 10. Specimen, 11. Finished part, 12. Positioning block. Detailed Implementation
[0017] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0018] The features and illustrative embodiments of various aspects of the present invention will now be described in detail. Numerous specific details are set forth in the following detailed description to provide a thorough understanding of the invention. However, it will be apparent to those skilled in the art that the invention may be practiced without requiring some of these specific details. The following description of embodiments is merely intended to provide a better understanding of the invention by illustrating examples of the invention. The invention is by no means limited to any specific setups and methods set forth below, but covers any improvements, substitutions, and modifications to structures, methods, and devices without departing from the spirit of the invention. Well-known structures and techniques are not shown in the drawings and the following description to avoid unnecessarily obscuring the invention.
[0019] In the description of this invention, it should be noted that the directions or positional relationships indicated by terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing and simplifying the invention, and should not be construed as limiting the invention. Furthermore, the use of ordinal numbers (e.g., "first and second," etc.) is for distinguishing objects and is not limited to this order, and should not be construed as indicating or implying relative importance.
[0020] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly, encompassing both direct connection and indirect connection via an intermediate medium. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.
[0021] It should be noted that, unless otherwise specified, the embodiments of the present invention and the features thereof can be combined with each other, and the various embodiments can be referenced and cited in each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.
[0022] The present invention will be further described in detail below with reference to the embodiments and accompanying drawings, but the embodiments of the present invention are not limited thereto.
[0023] Figure 1 This is a schematic diagram illustrating an embodiment of a one-time bending forming device and method for a kit-type sheet metal part according to an invention.
[0024] This invention proposes a one-time bending forming device for kit-type sheet metal parts. The kit-type sheet metal parts have positioning holes in the middle of the end face, and the kits are evenly distributed in the plane and perpendicular to the end face. The processing device includes: female mold 1, base 2, conversion sleeve 3, male mold 4, support block 5, cylindrical pin 7, positioning pin 8, bolt 9, and positioning block 12. Female mold 1 and positioning pins 8 evenly distributed on female mold 1; The female mold 2 and the specimen 10 are fixed in position by locating pins 8; The bottom of the positioning block 12 is provided with a positioning profile, the shape of which matches the profile of the cavity of the female mold 1. The center of the positioning block 12 is provided with a through hole, the profile of which matches the profile of the male mold 4. The thickness of the positioning profile is determined according to the thickness and clearance requirements of the kit-type sheet metal parts. The male mold 4 and the female mold 1 are positioned by positioning block 12 to ensure that the gap between the male mold 4 and the female mold 2 is uniform, thus ensuring that each claw of the kit deforms simultaneously and uniformly during the downward movement of the male mold. The male mold 4 drives the specimen 10 to move vertically within the cavity of the female mold 1; The support block 5 can move axially within the base 2. When the support block 5 moves into the base 2, it provides rigid support to the deformed end face of the specimen and shapes the deformed end face to ensure its parallelism. When the support block 5 moves to the outside of the base 2, the finished part 11 can be demolded under the movement of the male mold, and the finished part 11 can be removed under the reverse movement of the support block 5.
[0025] For example, the male mold 4 and the central positioning pin 6 disposed on the male mold 4 are used to fix the position between the male mold 4 and the specimen 10.
[0026] Secondly, the present invention proposes a processing system for kit-type sheet metal parts, including: The aforementioned processing equipment and automated electronically controlled press; The electrically controlled press is internally equipped with force sensors, displacement sensors, a pressure rod, and a motion control system. Thirdly, the present invention proposes an efficient processing method for kit-type sheet metal parts, used in the aforementioned processing apparatus, the processing method comprising the following steps: The female mold 1 and the base 2 are fixed on the operating platform of the electric press through the pressure plate groove in the device. The positioning block 12 is placed in the cavity of the female mold 2. The male mold 4 is assembled in the positioning hole of the positioning block 12. After fixing the horizontal position of the male mold 4, the male mold 4 is fixedly connected to the clamp of the electric press through the conversion sleeve 3. After fixing the male mold 4, the positioning block 12 is taken out. The specimen 10 is fixed to the female mold by the positioning pins 8 evenly distributed in the device; The support block 5 is placed inside the base 2, and is in a rigid support state; the electric control press is started, its pressure-displacement parameters are set, and the press is started to move. The end of the specimen 10 is bent into a 90° angle with the end face by the relative movement of the male mold 4 and the female mold 1; when the specimen 10 moves to contact the support block 5, the pressure increases, the displacement remains unchanged, the pressure holding time is 10s, and the end face of the specimen 10 is shaped. The specimen 10 is bent into the finished part 11.
[0027] After shaping, the pressure of the press is reduced to 0N. The support block 5 is removed. The male mold 4 continues to drive the finished part 11 to move until the end of the finished part 11 is completely separated from the cavity of the female mold 2. The support block 5 can be moved into the base 2 to push out the finished part 11 and the next workpiece can be bent.
[0028] The above-described embodiments of the invention have high processing efficiency, good precision control, high pass rate, and are simple and reliable in subsequent assembly processes. They also have stable quality, no excess material is generated, and can meet the requirements for bending and forming of sheet metal parts of different angles in mass production.
[0029] Among them, the fitting gap between the positioning block 12 and the female mold 1 is less than 0.02mm; the fitting gap between the positioning block 12 and the male mold 4 is less than 0.02mm; the thickness of the three sides of the positioning block 12 is consistent to ensure that the gap between the male mold 4 and the female mold 1 is uniform and the deformation of each side of the kit is consistent after molding. The female mold 1 and the base 2 are positioned by cylindrical pins 7 and connected and fixed by bolts 9. The base 2 provides demolding space after the workpiece is formed; at the same time, it provides a motion track for the support block 5. Among them, the support block 5 can move axially in the guide rail of the base 2. When the support block 5 is in the guide rail, it plays a supporting and shaping role on the bent rear end face of the kit. When the support block 5 moves outside the guide rail, it can provide space for the workpiece to be demolded. After demolding, the support block 5 moves along the guide rail to remove the workpiece. Among them, the male mold 4, female mold 1, and support block 5 are all made of stainless steel and hardened by quenching to improve their wear resistance and enhance their durability.
[0030] Specifically, using this device for bending sheet metal parts ensures the parallelism of the end faces, consistency of bending angles, and significantly improves the pass rate and processing efficiency. It provides a new method and approach for bending other similar sheet metal parts.
[0031] In some embodiments, positioning blocks of different sizes can be used to achieve different gaps between male and female molds, thereby enabling the bending forming of kit-type parts of different thicknesses; In some embodiments, the forming surfaces of the male and female molds can be designed as inclined surfaces to achieve bending forming of sheet metal parts with different bending angles; In some embodiments, by changing the outer diameter of the conversion sleeve, it can be used on presses with different types of chucks, thereby reducing the customization cost of the press. In some embodiments, different bending heights for kit-type sheet metal parts can be achieved by changing the depth of the female mold cavity; In some embodiments, by changing the distribution of the female mold locating pins, the positioning of sheet metal parts with different distribution angles can be achieved.
[0032] The above detailed embodiments are a description of the present invention. It should not be considered that the specific embodiments of the present invention are limited to these descriptions. For those skilled in the art, several simple deductions and substitutions can be made without departing from the concept of the present invention, and all of these should be considered to fall within the protection scope of the present invention.
Claims
1. A one-time bending forming device for kit-type sheet metal parts, characterized in that, The kit type sheet metal parts include a central end face and claw-shaped kits evenly distributed around the central end face. The kit type sheet metal parts one-time bending forming device includes: female mold (1), base (2), male mold (4), support block (5), positioning pin (8), and positioning block (12). The top of the male mold (4) is connected to the press; The female mold (1) is set on the base (2), and a through cavity is set in the center of the female mold (1). The distance between the forming surfaces in the cavity matches the distance between the components of the kit-type sheet metal parts. The top surface of the female mold (1) is provided with positioning pins (8) around the central cavity for positioning the test piece (10). The bottom of the positioning block (12) is provided with a positioning surface, the shape of which matches the surface of the cavity of the female mold (1), and the center of the positioning block (12) is provided with a through hole, the surface of which matches the surface of the male mold (4); the thickness of the positioning surface is determined according to the thickness and clearance requirements of the kit-type sheet metal parts. A support block (5) is slidably installed inside the base (2) to provide demolding space for the specimen (10) after molding.
2. The one-time bending forming device for kit-type sheet metal parts according to claim 1, characterized in that, The clearance between the positioning block (12) and the female mold (1) is less than 0.02 mm; the clearance between the positioning block (12) and the male mold (4) is less than 0.02 mm.
3. The one-time bending forming device for kit-type sheet metal parts according to claim 1, characterized in that, The male mold (4), female mold (1), and support block (5) are all made of stainless steel and hardened by quenching.
4. The one-time bending forming device for kit-type sheet metal parts according to claim 1, characterized in that, The forming surfaces of the male mold (4) and the female mold (1) are inclined surfaces to achieve bending forming of sheet metal parts of different bending angles.
5. The one-time bending forming device for kit-type sheet metal parts according to claim 1, characterized in that, When the support block (5) moves into the base (2), the support block (5) provides rigid support to the deformed end face of the specimen (10); when the support block (5) moves to the outside of the base (2), the deformed specimen (10) is demolded under the movement of the male mold, and the deformed specimen (10) is removed under the reverse movement of the support block (5).
6. The one-time bending forming device for kit-type sheet metal parts according to claim 1, characterized in that, The female mold (1) and the base (2) are positioned by a cylindrical pin (7) and connected and fixed by bolts (9).
7. The one-time bending forming device for kit-type sheet metal parts according to claim 1, characterized in that, The distribution angle of the positioning pins (8) around the cavity of the female mold (1) is determined according to the distribution angle of the kit of the sheet metal parts.
8. The one-time bending forming device for kit-type sheet metal parts according to claim 1, characterized in that, The top of the male mold (4) is connected to the press through the conversion sleeve (3). By changing the outer diameter of the conversion sleeve (3), it can be used on presses with different types of chucks.
9. A processing system for kit-type sheet metal parts, characterized in that, include: The one-time bending forming device for kit-type sheet metal parts and the automated electronically controlled press as described in any one of claims 1-8; The electrically controlled press is internally equipped with force sensors, displacement sensors, a pressure rod, and a motion control system.
10. A method for processing sheet metal parts of the kit type, the processing system as described in claim 9, characterized in that, The processing method includes the following steps: Fix the female mold (1) and the base (2) on the operating platform of the electric press. Place the positioning block (12) in the cavity of the female mold (2). Assemble the male mold (4) in the positioning hole of the positioning block (12). After fixing the horizontal position of the male mold (4), fix the male mold (4) to the clamp of the electric press through the conversion sleeve (3). After fixing the male mold (4), take out the positioning block (12). The specimen (10) is fixed on the female mold (1) by the positioning pin (8); The support block (5) is placed inside the base (2) and is in a rigid support state; the electric control press is started, its pressure-displacement parameters are set, and the press is started to move. The end of the specimen (10) is bent by the relative movement of the male mold (4) and the female mold (1); when the specimen (10) moves to contact the support block (5), the pressure increases, the displacement remains unchanged, the pressure holding time is 10s, the end face of the specimen (10) is shaped, and the specimen (10) is bent into the finished product (11). After shaping, the pressure of the press is reduced to 0N. The support block (5) is removed. The male mold (4) continues to drive the finished part (11) to move until the end of the finished part (11) is completely separated from the cavity of the female mold (1). The support block (5) is moved into the base (2), the finished part (11) is ejected, and the next workpiece is bent.