阅读说明：本技术 一种用于单点渐进成形的柔性支撑装置及成形方法 (Flexible supporting device for single-point incremental forming and forming method ) 是由 苏春建 赵栋 郭素敏 李广震 王帅本 李雪梦 张敏 王瑞 张国松 娄淑梅 张强 于 2021-07-29 设计创作，主要内容包括：本发明公开了一种用于单点渐进成形的柔性支撑装置及成形方法,属于板材加工技术领域,是由成形工具头、压板、托板、电磁装夹系统、液压支撑系统、底座组成,通过电磁装夹系统中的上、下壳体实现对板材的夹紧,液压支撑系统中的万向球配合液压柱实现对板材的柔性支撑,可以完成板材在成形过程中不同角度的倾斜,本发明能够实现板材的柔性支撑和倾斜,增加整体设备的灵活性,可以成形出传统单点渐进成形设备难以成形的工件,避免了传统机械式装夹灵活性低、精度低且成形工件形状单一的缺点。(The invention discloses a flexible supporting device and a forming method for single-point incremental forming, which belong to the technical field of plate processing and comprise a forming tool head, a pressing plate, a supporting plate, an electromagnetic clamping system, a hydraulic supporting system and a base, wherein the plate is clamped by an upper shell and a lower shell in the electromagnetic clamping system, and the plate is flexibly supported by a universal ball in the hydraulic supporting system in cooperation with a hydraulic column, so that the plate can be inclined at different angles in the forming process.)

1. A flexible support device for single point incremental forming, characterized by: the forming tool head is positioned above a plate, the pressing plate is positioned above the supporting plate, four concave circular grooves are arranged at the bottom of the supporting plate, the electromagnetic clamping system consists of an upper shell, an I-shaped iron core, an electromagnetic coil, a lower shell, a hook, a spring, a fixing hook and a fixing box, the electromagnetic coil is wound around the I-shaped iron core, the I-shaped iron core and the electromagnetic coil are positioned inside the upper shell, a detachable end cover is arranged at the contact surface of the upper shell and the pressing plate, the lower shell has the same structure as the upper shell, a detachable end cover is also arranged at the contact position of the supporting plate, the I-shaped iron core and the electromagnetic coil are arranged inside the lower shell, the hook is welded at the bottom of the lower shell, the upper end of the fixing box is opened, two wings at the bottom are provided with threaded holes and are fixed on the radial plate through bolt connection, fixed hook welding is in the inside bottom of fixed box, and spring one end is hung on the couple, and the other end is connected on the fixed hook, hydraulic support system by universal ball, interior hydraulic column, outer hydraulic column, hydraulic oil pump, electro-hydraulic servo valve, radials and constitutes, universal ball top sphere and layer board concave circular groove surface contact, inside outer hydraulic column was arranged in to interior hydraulic column, open on the top has a circular recess, outer hydraulic column is fixed on the base, connects through the radials between two liang, and the hydraulic oil pump is fixed on the base, and electro-hydraulic servo valve fixes on the base, passes through oil pipe with hydraulic oil pump and outer hydraulic column respectively and links to each other, the radials open threaded hole, can be connected through bolt and nut with fixed box.

2. A flexible support device for single point incremental forming as claimed in claim 1, wherein: the top spherical surface of the universal ball is in spherical contact with the concave circular groove of the supporting plate and can rotate relative to the supporting plate.

3. A flexible support device for single point incremental forming as claimed in claim 1, wherein: after the electromagnetic clamping system is electrified, the upper shell, the I-shaped iron core and the electromagnetic coil form an upper clamp, and the lower shell, the I-shaped iron core and the electromagnetic coil form a lower clamp.

4. A flexible support device for single point incremental forming as claimed in claim 1, wherein: the lower housing retracts into the stationary box when the spring is not in operation.

5. A flexible support device for single point incremental forming as claimed in claim 1, wherein: the bottom of the universal ball is provided with a circular bulge which is detachably matched with a circular groove of the inner hydraulic column.

6. A method of forming a flexible support for single point progressive forming, comprising: the implementation of the flexible supporting device for single-point progressive forming based on any one of claims 1 to 5 comprises the following steps,

(1) fixing a fixing box of the electromagnetic clamping system on a radial plate through bolt connection, electrifying an electromagnetic coil of the electromagnetic clamping system, and clamping the plate by the upper shell and the lower shell;

(2) the hydraulic oil pump and the electro-hydraulic servo valve are electrified, and the inner hydraulic column is controlled to independently lift by controlling the electro-hydraulic servo valve, so that the inclination of the plate at different angles and directions is realized;

(3) and opening a forming tool head control switch, and controlling the plate to incline at different angles and directions through a program and to interact with the forming tool head to finish the forming of the complex workpiece.

7. A method of flexible support forming for single point progressive forming according to claim 6, wherein: the spring of the electromagnetic clamping system is always in a stretching state when working.

8. A method of flexible support forming for single point progressive forming according to claim 6, wherein: and the inner hydraulic column of the hydraulic support system independently ascends and descends according to the input program.

Technical Field

The invention relates to a flexible supporting device for single-point incremental forming and a forming method, and belongs to the technical field of plate processing.

Background

In the early 90 s of the 20 th century, Japanese scholars, Songyanmaofu, put forward a novel metal plate digital incremental forming technology, and provide an advanced means for the rapid development of new products, the traditional single-point incremental forming technology can only form workpieces with simple and regular symmetrical shapes, for example, the 'conical piece', the supporting device can not move after clamping the sheet material, only the movement of the tool head can be used for realizing the forming, this limits the flexibility of the forming apparatus, and single-point progressive forming can be divided into positive forming and negative forming according to the forming direction, in the single-point progressive positive forming process, the edge of the sheet material descends along with the descending of the tool head, the distance between the tool head and the sheet material is changed, but the forming angle between the tool head and the plate cannot be changed because the forming angle can only move up and down along with the guide post, so that the forming flexibility is limited, the shape of a formed workpiece is also limited, and the development of a single-point progressive forming process is hindered.

Therefore, an auxiliary supporting device capable of flexibly changing the included angle between the plate and the tool head is needed to form workpieces which are difficult to form by the traditional single-point incremental forming equipment, but innovative research and design in the field are few, and the auxiliary supporting device has strong development potential.

Disclosure of Invention

In view of the above disadvantages, the present invention provides a flexible supporting device for single-point incremental forming and a forming method thereof.

The invention is realized by the following technical scheme: a flexible supporting device for single-point incremental forming is composed of a forming tool head, a pressing plate, a supporting plate, an electromagnetic clamping system, a hydraulic supporting system and a base, wherein the forming tool head is positioned above a plate, the pressing plate is positioned above the supporting plate and used for fixing the plate on the supporting plate, four concave circular grooves are formed in the bottom of the supporting plate, the electromagnetic clamping system is composed of an upper shell, an I-shaped iron core, an electromagnetic coil, a lower shell, a hook, a spring, a fixing hook and a fixing box, the electromagnetic coil is wound around the I-shaped iron core, the I-shaped iron core and the electromagnetic coil are positioned in the upper shell, a detachable end cover is arranged on the contact surface of the upper shell and the pressing plate, the lower shell and the upper shell are identical in structure, a detachable end cover is also arranged at the contact position of the supporting plate, the I-shaped iron core and the electromagnetic coil are arranged in the detachable end cover, and the hook is welded at the bottom of the lower shell, the upper end of the fixed box is opened, the two wings at the bottom are provided with threaded holes and are connected and fixed on the radial plate through bolts, the fixed hook is welded at the bottom end inside the fixed box, one end of the spring is hung on the hook, the other end is connected on the fixed hook, the hydraulic support system consists of a universal ball, an inner hydraulic column, an outer hydraulic column, a hydraulic oil pump, an electro-hydraulic servo valve and a spoke plate, the bottom end of the universal ball is provided with a circular bulge, the top spherical surface is contacted with the surface of the concave circular groove of the supporting plate, the inner hydraulic column is arranged inside the outer hydraulic column, the top end is provided with a circular groove, can dismantle the cooperation with the circular protruding formation in universal ball bottom, outer hydraulic column is fixed on the base, connects through the radials between two liang, and the hydraulic oil pump is fixed on the base, and the electro-hydraulic servo valve is fixed on the base, passes through oil pipe with hydraulic oil pump and outer hydraulic column respectively and links to each other, the radials open threaded hole, can pass through the screw bolt and be connected with fixed box.

Furthermore, after the electromagnetic clamping system is electrified, the upper shell, the I-shaped iron core and the electromagnetic coil form an upper clamp, the lower shell, the I-shaped iron core and the electromagnetic coil form a lower clamp, and the pressing plate and the supporting plate can be clamped tightly, so that the plate is fixed.

Further, the lower case is retracted into the fixing case when the spring is not operated.

Furthermore, the universal ball and the supporting plate can rotate relatively, and flexible support is provided for the supporting plate.

Further, there are four electro-hydraulic servo valves, each of which controls a pair of inner and outer hydraulic columns.

A flexible supporting and forming method for single-point progressive forming is based on the flexible supporting device for single-point progressive forming and specifically comprises the following steps:

(1) fixing a fixing box of the electromagnetic clamping system on a radial plate through bolt connection, electrifying an electromagnetic coil of the electromagnetic clamping system, and clamping the plate by the upper shell and the lower shell;

(2) the hydraulic oil pump and the electro-hydraulic servo valve are electrified, and the inner hydraulic column is controlled to independently lift by controlling the electro-hydraulic servo valve, so that the inclination of the plate at different angles and directions is realized;

(3) and opening a forming tool head control switch, and controlling the plate to incline at different angles and directions through a program and to interact with the forming tool head to finish the forming of the complex workpiece.

Furthermore, the spring of the electromagnetic clamping system is always in a stretching state during working, so that the plate is prevented from being separated from the support.

Furthermore, direct current is introduced into an electromagnetic coil of the electromagnetic clamping system, so that the upper shell and the lower shell can generate magnetic force.

Furthermore, the inner hydraulic column of the hydraulic support system independently ascends and descends according to an input program, and the supporting plate is inclined by controlling the ascending and descending so as to drive the plate to incline by a specified angle.

The invention has the beneficial effects that the electromagnetic clamping system is adopted, the upper and lower shells generate magnetic force interaction after being electrified to clamp the pressing plate and the supporting plate, the plate can be better fixed, the hydraulic support system is designed to enable each inner hydraulic column to be capable of independently lifting, meanwhile, the spherical surface at the top end of the universal ball is matched with the surface of the concave circular groove of the supporting plate to provide flexible support for the supporting plate, the inclination of the plate at different angles and directions can be realized, the spring is always in a stretching state in the lifting and inclination process of the plate in the design of the electromagnetic clamping system, the plate is prevented from being separated from the support, the forming of a complex workpiece can be realized by controlling the matching of the forming tool head and the inclined plate, when the hydraulic support system does not work, the inner hydraulic columns do not lift, the plate is in a horizontal state, and the forming of the traditional simple workpiece can be realized.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a front view of the present invention;

FIG. 3 is a partial cross-sectional view of the hydraulic support system of the present invention;

FIG. 4 is a cross-sectional view of an electromagnetic clamping system of the present invention;

in the figure, 1, a forming tool head, 2, a pressure plate, 3, a plate, 4, a supporting plate, 5, an electromagnetic clamping system, 501, an upper shell, 502, an I-shaped iron core, 503, an electromagnetic coil, 504, a lower shell, 505, a hook, 506, a spring, 507, a fixing hook, 508 fixing boxes, 6, a hydraulic support system, 601, a universal ball, 602, an inner hydraulic column, 603, an outer hydraulic column, 604, a hydraulic oil pump, 605, an electro-hydraulic servo valve, 606, a spoke plate, 7, a base, 8, a bolt and 9 nuts.

Detailed Description

It should be noted that, in the present invention, the terms such as "upper", "lower", "left", "right", and the like indicate the orientation or the positional relationship based on the drawings, and the terms are only the relational terms determined for describing the structural relationship of the components of the present invention, and do not refer to any components of the present invention, and are not to be construed as limiting the present invention.

The following detailed description of embodiments of the invention is provided in conjunction with the appended drawings:

as shown in fig. 1 to 4, a flexible supporting device for single-point incremental forming and a forming method thereof are realized by the following technical solutions: a flexible supporting device for single-point incremental forming is composed of a forming tool head 1, a pressing plate 2, a supporting plate 4, an electromagnetic clamping system 5, a hydraulic supporting system 6 and a base 7, wherein the forming tool head 1 is positioned above a plate 3, the pressing plate 2 is positioned above the supporting plate 4 and used for fixing the plate 3 on the supporting plate 4, four concave circular grooves are formed in the bottom of the supporting plate 4, the electromagnetic clamping system 5 is composed of an upper shell 501, an I-shaped iron core 502, an electromagnetic coil 503, a lower shell 504, a hook 505, a spring 506, a fixing hook 507 and a fixing box 508, the electromagnetic coil 503 is wound around the I-shaped iron core 502, the I-shaped iron core 502 and the electromagnetic coil 503 are positioned inside the upper shell 501, a detachable end cover is arranged on the contact surface of the upper shell 501 and the pressing plate 2, the lower shell 504 is identical in structure to the upper shell 501, and a detachable end cover is arranged on the contact position of the supporting plate 4, the inner part is provided with an I-shaped iron core 502 and an electromagnetic coil 503, a hook 505 is welded at the bottom of a lower shell 504, the upper end of a fixed box 508 is opened, two wings at the bottom are provided with threaded holes and fixed on a web 606 through bolt connection, a fixed hook 507 is welded at the bottom end in the fixed box 508, one end of a spring 506 is hung on the hook 505, the other end is connected on the fixed hook 507, a hydraulic support system 6 consists of a universal ball 601, an inner hydraulic column 602, an outer hydraulic column 603, a hydraulic oil pump 604, an electro-hydraulic servo valve 605 and the web 606, the bottom end of the universal ball 601 is provided with a circular bulge, the top spherical surface is contacted with the surface of a concave circular groove of a supporting plate 4, the inner hydraulic column 602 is arranged in the outer hydraulic column 603, the top end is provided with a circular groove which is detachably matched with the circular bulge at the bottom end of the universal ball 601, the outer hydraulic column 603 is fixed on a base 7, the webs 606 are connected with each other, the hydraulic oil pump 604 is fixed on the base 7, the electro-hydraulic servo valve 605 is fixed on the base 7 and is respectively connected with the hydraulic oil pump 604 and the outer hydraulic column 603 through oil pipes, and the spoke plate 606 is provided with a threaded hole and can be connected with the fixed box 508 through a bolt 8 and a nut 9.

Further, after the electromagnetic clamping system 5 is powered on, the upper shell 501, the i-shaped iron core 502 and the electromagnetic coil 503 are combined into an upper clamp, and the lower shell 504, the i-shaped iron core 502 and the electromagnetic coil 503 are combined into a lower clamp, so that the pressing plate 2 and the supporting plate 4 can be clamped tightly, and the plate 3 can be fixed.

Further, the lower housing 504 retracts into the retention box 508 when the spring 506 is not operating.

Further, the universal ball 601 and the supporting plate 4 can rotate relatively, and flexible support is provided for the supporting plate 4.

Further, there are four electro-hydraulic servo valves 605, and each electro-hydraulic servo valve 605 controls a pair of inner hydraulic columns 602 and outer hydraulic columns 603.

A flexible supporting and forming method for single-point progressive forming is based on the flexible supporting device for single-point progressive forming and specifically comprises the following steps:

(1) fixing a fixing box 508 of the electromagnetic clamping system 5 on a spoke plate 606 through bolt connection, electrifying an electromagnetic coil 503 of the electromagnetic clamping system 5, and clamping the plate 3 by the upper shell 501 and the lower shell 504;

(2) electrifying the hydraulic oil pump 604 and the electro-hydraulic servo valve 605, and controlling the inner hydraulic column 602 to independently lift by controlling the electro-hydraulic servo valve 605, thereby realizing the inclination of the plate 3 in different angles and directions;

(3) and opening a control switch of the forming tool head 1, and controlling the plate 3 to incline at different angles and directions through a program and interact with the forming tool head 1 to finish forming of the complex workpiece.

Further, the spring 506 of the electromagnetic clamping system 5 is always in a stretching state during working, so that the plate 3 is prevented from being separated from the support.

Further, the electromagnetic coil 503 of the electromagnetic clamping system 5 is energized with direct current to generate magnetic force between the upper housing 501 and the lower housing 504.

Further, the inner hydraulic column 602 of the hydraulic support system 6 independently ascends and descends according to the input program, and the plate 3 is driven to incline by a designated angle by controlling the ascending and descending to incline the supporting plate 4.

A flexible supporting device for single-point incremental forming specifically works as follows:

when the device forms a complex workpiece, a fixed box 508 is arranged on a web 606 through a bolt 8 and a nut 9, two ends of a spring 506 are respectively connected to a hook 505 and a fixed hook 507, a plate 3 is arranged between a pressure plate 2 and a supporting plate 4, an upper shell 501 is arranged on the pressure plate 2, at the moment, because a hydraulic support system 6 does not work, a lower shell 504 is arranged in the fixed box 508 and has a certain distance with the supporting plate 4, direct current is introduced into an electromagnetic clamping system 5, the upper shell 501 and the lower shell 504 respectively generate magnetic force to clamp the supporting plate 2, the plate 3 and the pressure plate 4, at the moment, the spring 506 enters a working state, namely a stretching state, the hydraulic support system 6 is electrified, a hydraulic oil pump 604 transmits power through an oil pipe, the regular lifting of each inner hydraulic column 602 according to a program is realized through the adjusting function of each electro-hydraulic servo valve 605, and the contact function of a universal ball 601 and the supporting plate 4 is adopted, the flexible support of the plate 3 and the inclination function of the device are realized, the forming tool head 1 is matched with the inclined plate 3 through a programmed program, so that the single-point progressive forming process is completed, when the hydraulic support system 6 does not work, the inner hydraulic column 602 only plays a supporting role, the electromagnetic clamping system 5 works at the moment, the plate 3 is clamped, the spring 506 is still in a stretching state, the universal ball 601 and the supporting plate 4 can not be separated from each other, and the forming tool head 1 completes the forming of a simple workpiece through the programmed program.

It will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in the embodiments described above without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims.