阅读说明：本技术 一种用于带长u型槽钣金件的弯曲工装及其使用方法 (Bending tool for sheet metal part with long U-shaped groove and using method of bending tool ) 是由 曹小利 许小强 于 2020-09-18 设计创作，主要内容包括：本发明属于通信设备加工技术领域,具体涉及一种用于带长U型槽钣金件的弯曲工装及其使用方法。本发明公开了一种用于带长U型槽钣金件的弯曲工装,包括第一下模座、第一上刀具和第二上刀具,第一下模座与第一上刀具相匹配,第一下模座设有第一预紧顶板卡槽、第一U型槽、第一紧定螺钉固定螺纹和第一弹簧安装孔,第一下模座连接有延长固定板,延长固定板连接有第二下模座,第一弹簧安装孔和第二弹簧安装孔内均安装有弹簧,第一紧定螺钉固定螺纹和第二紧定螺钉固定螺纹均连接有内六角紧定螺钉,第一预紧顶板卡槽和第二预紧顶板卡槽内安装有预压顶板,预压顶板的下表面与弹簧接触,第一下模座和第二下模座的自由端面安装有端部卡板。(The invention belongs to the technical field of communication equipment processing, and particularly relates to a bending tool for a sheet metal part with a long U-shaped groove and a using method of the bending tool. The invention discloses a bending tool for sheet metal parts with long U-shaped grooves, which comprises a first lower die holder, a first upper cutter and a second upper cutter, wherein the first lower die holder is matched with the first upper cutter, the first lower die holder is provided with a first pre-tightening top plate clamping groove, a first U-shaped groove, a first set screw fixing thread and a first spring mounting hole, the first lower die holder is connected with an extension fixing plate, the extension fixing plate is connected with a second lower die holder, springs are mounted in the first spring mounting hole and the second spring mounting hole, the first set screw fixing thread and the second set screw fixing thread are connected with an inner hexagonal set screw, pre-tightening top plates are mounted in the first pre-tightening top plate clamping groove and the second pre-tightening top plate clamping groove, the lower surfaces of the pre-tightening top plates are in contact with the springs, and end clamping plates are mounted on the free end surfaces of the first lower die holder and the second lower die holder.)

1. The utility model provides a crooked frock for taking long U type groove sheet metal component which characterized in that: the die comprises a first die holder (1), a first upper cutter (5) and a second upper cutter (6), wherein the first die holder (1) is matched with the first upper cutter (5), the first die holder (1) is provided with a first pre-tightening top plate clamping groove (101), a first U-shaped groove (102), a first set screw fixing thread (105) and a first spring mounting hole (107), the first die holder (1) is connected with an extension fixing plate (4), the extension fixing plate (4) is connected with a second die holder (3), the second die holder (3) is matched with the second upper cutter (6), the second die holder (3) is provided with a second pre-tightening top plate clamping groove (301), a second U-shaped groove (302), a second set screw fixing thread (305) and a second spring mounting hole (307) which are matched with the first die holder (1), and springs (8) are respectively mounted in the first spring mounting hole (107) and the second spring mounting hole (307), the first set screw fixing thread (105) and the second set screw fixing thread (305) are both connected with an inner hexagon set screw (9), the spring (8) is locked and fixed in a first spring mounting hole (107) and a second spring mounting hole (307) through matched inner hexagon set screws (9), a pre-pressing top plate (2) is mounted in a first pre-pressing top plate clamping groove (101) and a second pre-pressing top plate clamping groove (301), the lower surface of the pre-pressing top plate (2) is in contact with the spring (8), an end clamping plate (7) is mounted on the free end surface of the first lower die holder (1) and the free end surface of the second lower die holder (3), the end clamping plate (7) is provided with a clamping groove (702) matched with the pre-pressing top plate (2), the first upper cutter (5) and the second upper cutter (6) are both provided with mounting clamping grooves (501), the first upper cutter (5) is provided with a first convex block (502) matched with the first U-shaped groove (102), and the second upper cutter (6) is provided with a second convex block (602) matched with the second U-shaped groove (302).

2. The bending tool for the sheet metal part with the long U-shaped groove of claim 1 is characterized in that: the first lower die holder (1) and the second lower die holder (3) are both provided with arc-shaped cutting edges (103), and the first upper cutter (5) and the second upper cutter (6) are both provided with lower cutting edges (503) matched with the arc-shaped cutting edges (103).

3. The bending tool for the sheet metal part with the long U-shaped groove of claim 1 is characterized in that: the prepressing top plate (2) comprises a top surface (201) and a stop step surface (202), the stop step surface (202) is matched with the clamping groove (702), and the width of the clamping groove (702) is 1mm larger than the thickness of the prepressing top plate (2).

4. The bending tool for the sheet metal part with the long U-shaped groove of claim 1 is characterized in that: the end faces of the first lower die holder (1) and the second lower die holder (3) are provided with threaded holes (104), the end baffle (7) is provided with counter bores (701) corresponding to the threaded holes (104), and the threaded holes (104) are connected with counter screws (703).

5. The bending tool for the sheet metal part with the long U-shaped groove of claim 1 is characterized in that: the first die holder (1) and the second die holder (3) are both provided with fixing plate connecting threaded holes (106), the extension fixing plate (4) is provided with first counter bores (401) matched with the fixing plate connecting threaded holes (106), and the fixing plate connecting threaded holes (106) are connected with counter screws (703).

6. The use method of the bending tool for the sheet metal part with the long U-shaped groove as claimed in any one of claims 1 to 5 is characterized in that: comprises the following steps of (a) carrying out,

s1: assembling a lower die tool, namely selecting a first lower die holder (1) and a second lower die holder (3) to be connected and assembled through an extension fixing plate (4) according to needs, assembling a pre-pressing top plate (2) in a first pre-tightening top plate clamping groove (101) and a second pre-tightening top plate clamping groove (301), assembling a spring (8) in a first spring mounting hole (107) and a second spring mounting hole (307) and locking the spring through an inner hexagonal set screw (9), and installing an end clamping plate (7) on free end faces of the first lower die holder (1) and the second lower die holder (3);

s2: placing the lower die tool assembled in the S1 mode into a lower clamping groove of a machine tool, and temporarily fixing the lower die tool;

s3: assembling an upper die tool, namely installing a first upper cutter (5) and a second upper cutter (6) into an upper clamping groove of a machine tool through an installation clamping groove (501) respectively and fixing the first upper cutter and the second upper cutter to form the upper die tool;

s3: starting a machine, adjusting the alignment degree of an upper die tool and a lower die tool, ensuring that the gap is basically consistent, then putting a test piece with the same material thickness on the lower die tool, enabling the upper die tool to move downwards through a machine tool, enabling a prepressing top plate (2) to be firstly contacted with the test piece to generate prepressing force, ensuring that the test piece cannot slide in the process of slowly folding the upper die tool and the installed lower die tool, pressing parts into the lower die tool, ensuring that the upper die tool, the test piece and the lower die tool have no gap, and are in a pressing state, completing adjustment, and fixing the lower die tool;

s4: after debugging is finished, the workpiece to be machined is placed on a lower die tool, the upper die tool is moved downwards through a machine tool, the workpiece to be machined is pressed into a first U-shaped groove (102) and a second U-shaped groove (302), after pressing is finished, the upper die tool is moved upwards through the machine tool, and the U-shaped sheet metal part formed through pressing is ejected out of the first U-shaped groove (102) and the second U-shaped groove (302) under the action of a spring (8), so that the sheet metal part with the long U-shaped groove can be obtained.

Technical Field

The invention belongs to the technical field of communication equipment processing, and particularly relates to a bending tool for a sheet metal part with a long U-shaped groove and a using method of the bending tool.

Background

For communication chassis, communication module series products with long U-shaped groove, the existing technology is basically produced by punching a stamping die; for products with different lengths, different molds need to be opened, the mold structure is complex and inconvenient to maintain, the cost is very high, and particularly, the requirements on the development efficiency and the cost of customers are often difficult to meet under the trends of sample stages of serial products of communication cases and communication modules and small batches of various products; therefore, the bending tool for the communication case and the module series products with the long U-shaped grooves is designed, the sheet-shaped prepressing and ejecting design is adopted, the ejecting and prepressing functions are realized, meanwhile, the tool combination can realize the processing method of the products with different lengths according to the products with different lengths at the end part, the processing of various long U-shaped products is realized, and the bending tool has obvious advantages in production convenience and cost.

Disclosure of Invention

In view of the problems raised by the above background art, the present invention is directed to: aiming at providing a bending tool for a sheet metal part with a long U-shaped groove and a use method thereof.

In order to achieve the technical purpose, the technical scheme adopted by the invention is as follows:

a bending tool for sheet metal parts with long U-shaped grooves comprises a first lower die base, a first upper cutter and a second upper cutter, wherein the first lower die base is matched with the first upper cutter, the first lower die base is provided with a first pre-tightening top plate clamping groove, a first U-shaped groove, a first set screw fixing thread and a first spring mounting hole, the first lower die base is connected with an extension fixing plate, the extension fixing plate is connected with a second lower die base, the second lower die base is matched with the second upper cutter, the second lower die base is provided with a second pre-tightening top plate clamping groove, a second U-shaped groove, a second set screw fixing thread and a second spring mounting hole, the second pre-tightening top plate clamping groove, the second U-shaped groove, the second set screw fixing thread and the second spring mounting hole are matched with the first lower die base, springs are mounted in the first spring mounting hole and the second spring mounting hole, and the first set screw fixing thread and the second set screw fixing thread are connected with an inner hexagonal set screw, the spring is fixed through the locking of assorted hexagon socket head cap holding screw in first spring mounting hole and second spring mounting hole, install the pre-compaction roof in first pre-compaction roof draw-in groove and the second pre-compaction roof draw-in groove, the lower surface and the spring contact of pre-compaction roof, the tip cardboard is installed to the free terminal surface of first die holder and second die holder, the tip cardboard be equipped with pre-compaction roof assorted draw-in groove, cutter all is equipped with installation slot on first last cutter and the second, first last cutter be equipped with first U type groove assorted first lug, the cutter is equipped with second U type groove assorted second lug on the second.

As a preferred scheme of the present invention, the first lower die holder and the second lower die holder are both provided with circular arc-shaped cutting edges, and the first upper cutter and the second upper cutter are both provided with lower cutting edges matched with the circular arc-shaped cutting edges.

As a preferred scheme of the invention, the pre-pressing top plate comprises a top surface and a stop step surface, the stop step surface is matched with the clamping groove, and the width dimension of the clamping groove is 1mm larger than the thickness dimension of the pre-pressing top plate.

As a preferred scheme of the invention, threaded holes are formed in the end faces of the first lower die holder and the second lower die holder, the end baffle is provided with counter bores corresponding to the threaded holes, and the threaded holes are connected with counter screws.

According to a preferable scheme of the invention, the first lower die holder and the second lower die holder are both provided with fixing plate connecting threaded holes, the extension fixing plate is provided with first counter bores matched with the fixing plate connecting threaded holes, and the fixing plate connecting threaded holes are connected with counter screws.

A use method of a bending tool for a sheet metal part with a long U-shaped groove comprises the following steps,

s1: assembling a lower die tool, namely selecting a first lower die holder and a second lower die holder to be connected and assembled through an extension fixing plate according to needs, assembling a pre-pressing top plate in a first pre-tightening top plate clamping groove and a second pre-tightening top plate clamping groove, assembling springs in a first spring mounting hole and a second spring mounting hole, locking the springs through inner hexagonal set screws, and installing end clamping plates on free end faces of the first lower die holder and the second lower die holder;

s2: placing the lower die tool assembled in the S1 mode into a lower clamping groove of a machine tool, and temporarily fixing the lower die tool;

s3: assembling an upper die tool, namely installing a first upper tool and a second upper tool into an upper clamping groove of a machine tool through an installation clamping groove respectively and fixing the first upper tool and the second upper tool to form the upper die tool;

s3: starting a machine, adjusting the alignment degree of an upper die tool and a lower die tool, ensuring that the gap is basically consistent, then putting a test piece with the same material thickness on the lower die tool, enabling the upper die tool to move downwards through a machine tool, enabling a prepressing top plate to be firstly contacted with the test piece to generate a prepressing force, ensuring that the test piece cannot slide in the process of slowly folding the upper die tool and the installed lower die tool, pressing a part into the lower die tool, ensuring that the upper die tool, the test piece and the lower die tool have no gap and are in a pressing state, completing adjustment, and fixing the lower die tool;

s4: after debugging is finished, the workpiece to be machined is placed on the lower die tool, the upper die tool moves downwards through the machine tool, the workpiece to be machined is pressed into the first U-shaped groove and the second U-shaped groove, after pressing is finished, the upper die tool moves upwards through the machine tool, and the U-shaped sheet metal part with the pressing forming is ejected out of the first U-shaped groove and the second U-shaped groove under the action of the spring, so that the U-shaped sheet metal part with the pressing forming can be obtained.

The invention has the beneficial effects that:

1. the bending tool designed by the invention is flexible in assembly and can be used for producing parts in a wide range;

2. the bending tool designed by the invention can be flexibly combined and changed according to the length of a product;

3. the bending tool designed by the invention has less parts, and the cost is greatly reduced compared with that of a stamping die;

4. the bending tool designed by the invention has a simple structure and is convenient to maintain;

5. the use method of the bending tool for the U-shaped sheet metal part is simple in process.

Drawings

The invention is further illustrated by the non-limiting examples given in the accompanying drawings;

FIG. 1 is a schematic diagram of an explosion structure of an embodiment of a bending tool for sheet metal parts with long U-shaped grooves, according to the invention;

fig. 2 is a first schematic structural diagram of a first lower die holder in an embodiment of a bending tool for sheet metal parts with long U-shaped grooves, according to the present invention;

fig. 3 is a second schematic structural diagram of a first lower die holder in an embodiment of a bending tool for sheet metal parts with long U-shaped grooves according to the present invention;

fig. 4 is a first structural schematic diagram of a second lower die holder in an embodiment of a bending tool for sheet metal parts with long U-shaped grooves, according to the present invention;

fig. 5 is a structural schematic diagram of a second lower die holder in an embodiment of a bending tool for sheet metal parts with long U-shaped grooves, according to the present invention;

FIG. 6 is a schematic structural diagram of an end clamping plate in an embodiment of a bending tool for sheet metal parts with long U-shaped grooves, according to the invention;

FIG. 7 is a schematic structural diagram of a second upper tool in an embodiment of a bending tool for sheet metal parts with long U-shaped grooves according to the present invention;

FIG. 8 is a schematic structural diagram of a first upper cutter in an embodiment of a bending tool for sheet metal parts with long U-shaped grooves according to the present invention;

fig. 9 is a schematic structural view of an extension fixing plate in an embodiment of a bending tool for sheet metal parts with long U-shaped grooves according to the present invention;

FIG. 10 is a schematic structural view of a pre-pressing top plate in an embodiment of a bending tool for sheet metal parts with long U-shaped grooves according to the invention;

FIG. 11 is a schematic cross-sectional structure diagram of the ejection state of a pre-pressed top plate in an embodiment of a bending tool for a sheet metal part with a long U-shaped groove according to the invention;

FIG. 12 is a schematic cross-sectional structure view of a compressed state of a pre-pressed top plate in an embodiment of a bending tool for a sheet metal part with a long U-shaped groove according to the present invention;

FIG. 13 is a schematic structural diagram of a use state in an embodiment of a bending tool for sheet metal parts with long U-shaped grooves, according to the present invention;

the main element symbols are as follows:

the die comprises a first lower die holder 1, a first pre-tightening top plate clamping groove 101, a first U-shaped groove 102, a circular arc-shaped cutting edge 103, a threaded hole 104, a first set screw fixing thread 105, a fixing plate connecting threaded hole 106, a first spring mounting hole 107, a pre-tightening top plate 2, a second lower die holder 3, a pre-tightening top plate clamping groove 301, a second U-shaped groove 302, a second set screw fixing thread 305, a second spring mounting hole 307, an extension fixing plate 4, a first counter bore 401, a first upper cutter 5, a mounting clamping groove 501, a first lug 502, a lower cutting edge 503, a second upper cutter 6, a second lug 602, an end clamping plate 7, a counter bore 701, a clamping groove 702, a counter head screw 703, a spring 8 and an inner hexagonal set screw 9.

Detailed Description

In order that those skilled in the art can better understand the present invention, the following technical solutions are further described with reference to the accompanying drawings and examples.

As shown in fig. 1, the bending tool for sheet metal parts with long U-shaped grooves of the present invention comprises a first lower die holder 1, a first upper cutter 5 and a second upper cutter 6, wherein the first lower die holder 1 is matched with the first upper cutter 5, the first lower die holder 1 is provided with a first pre-tightening top plate clamping groove 101, a first U-shaped groove 102, a first set screw fixing thread 105 and a first spring mounting hole 107, the first lower die holder 1 is connected with an extension fixing plate 4, the extension fixing plate 4 is connected with a second lower die holder 3, the second lower die holder 3 is matched with the second upper cutter 6, the second lower die holder 3 is provided with a second pre-tightening top plate clamping groove 301, a second U-shaped groove 302, a second set screw fixing thread 305 and a second spring mounting hole 307, springs 8 are respectively mounted in the first spring mounting hole 107 and the second spring mounting hole 307, the first set screw fixing thread 105 and the second set screw fixing thread 305 are both connected with an inner hexagonal set screw 9, spring 8 is fixed through assorted hexagon socket head cap set screw 9 locking in first spring mounting hole 107 and second spring mounting hole 307, install pre-compaction roof 2 in first pre-compaction roof draw-in groove 101 and the second pre-compaction roof draw-in groove 301, the lower surface and the spring 8 contact of pre-compaction roof 2, tip cardboard 7 is installed to the free end face of first die holder 1 and second die holder 3, tip cardboard 7 is equipped with pre-compaction roof 2 assorted draw-in groove 702, cutter 6 all is equipped with installation draw-in groove 501 on first upper slitter 5 and the second, first upper slitter 5 is equipped with the first lug 502 with first U type groove 102 assorted, cutter 6 is equipped with the second lug 602 with second U type groove 302 assorted on the second.

The first lower die holder 1 and the second lower die holder 3 are both provided with arc-shaped cutting edges 103, and the first upper cutter 5 and the second upper cutter 6 are both provided with lower cutting edges 503 matched with the arc-shaped cutting edges 103. Due to the design, the effect is better when the U-shaped sheet metal part is prepared.

The prepressing top plate 2 comprises a top surface 201 and a stop step surface 202, the stop step surface 202 is matched with the clamping groove 702, and the width dimension of the clamping groove 702 is 1mm larger than the thickness dimension of the prepressing top plate 2. Due to the design, the structure of the prepressing top plate 2 is simple, and the using effect is good.

The end faces of the first lower die holder 1 and the second lower die holder 3 are provided with threaded holes 104, the end baffle 7 is provided with counter bores 701 corresponding to the threaded holes 104, and the threaded holes 104 are connected with counter screws 703. Due to the design, the end baffle 7 is convenient to connect and fix.

The first lower die holder 1 and the second lower die holder 3 are both provided with fixing plate connecting threaded holes 106, the extension fixing plate 4 is provided with first counter bores 401 matched with the fixing plate connecting threaded holes 106, and the fixing plate connecting threaded holes 106 are connected with counter screws 703. Due to the design, the extension fixing plate 4 can be installed quickly and conveniently.

A use method of a bending tool for a sheet metal part with a long U-shaped groove comprises the following steps,

s1: assembling a lower die tool, namely selecting a first lower die holder 1 and a second lower die holder 3 to be connected and assembled through an extension fixing plate 4 according to needs, assembling a pre-pressed top plate 2 in a first pre-pressed top plate clamping groove 101 and a second pre-pressed top plate clamping groove 301, assembling a spring 8 in a first spring mounting hole 107 and a second spring mounting hole 307, locking the spring by an inner hexagonal set screw 9, and installing an end clamping plate 7 on the free end surfaces of the first lower die holder 1 and the second lower die holder 3;

s2: placing the lower die tool assembled in the S1 mode into a lower clamping groove of a machine tool, and temporarily fixing the lower die tool;

s3: assembling an upper die tool, namely installing the first upper tool 5 and the second upper tool 6 into an upper clamping groove of a machine tool through an installation clamping groove 501 respectively and fixing the first upper tool and the second upper tool to form the upper die tool;

s3: starting a machine, adjusting the alignment degree of an upper die tool and a lower die tool, ensuring that the gap is basically consistent, then putting a test piece with the same material thickness on the lower die tool, enabling the upper die tool to move downwards through a machine tool, enabling a prepressing top plate 2 to be firstly contacted with the test piece to generate prepressing force, ensuring that the test piece cannot slide in the process of slowly folding the upper die tool and the installed lower die tool, enabling parts to be pressed into the lower die tool, ensuring that the upper die tool, the test piece and the installed lower die tool have no gap and are in a pressing state, completing adjustment, and fixing the lower die tool;

s4: after debugging is finished, the workpiece to be processed is placed on the lower die tool, the upper die tool moves downwards through the machine tool, the workpiece to be processed is pressed into the first U-shaped groove 102 and the second U-shaped groove 302, after pressing is finished, the upper die tool moves upwards through the machine tool, and the U-shaped sheet metal part is pressed and formed to eject out the first U-shaped groove 102 and the second U-shaped groove 302 under the action of the spring 8, so that the U-shaped sheet metal part can be obtained.

The bending tool designed by the invention is flexible in assembly and can be used for producing parts in a wide range; can be flexibly combined and changed according to the length of the product; the number of parts is small, and the cost is greatly reduced compared with that of a stamping die; the structure is simple, the maintenance is convenient, and the process of the invention is simple.

The foregoing embodiments are merely illustrative of the principles of the present invention and its efficacy, and are not to be construed as limiting the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.