CN103111889A - Multi-point flexible fixture - Google Patents

Multi-point flexible fixture Download PDF

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Publication number
CN103111889A
CN103111889A CN2013100442943A CN201310044294A CN103111889A CN 103111889 A CN103111889 A CN 103111889A CN 2013100442943 A CN2013100442943 A CN 2013100442943A CN 201310044294 A CN201310044294 A CN 201310044294A CN 103111889 A CN103111889 A CN 103111889A
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fixture
clamping
base seat
box body
base
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CN103111889B (en
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王彦
拿比尔·耿迪
刘建辉
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University of Nottingham Ningbo China
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University of Nottingham Ningbo China
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Abstract

The invention discloses a multi-point flexible fixture. The multi-point flexible fixture comprises base seat, a drive part, and a clamping part. The drive part is mainly composed of a guiding nut, a lead screw handle, and a lead screw. The clamping part is mainly composed of a fixed base seat, a moving base seat, and two clamping boxes. The fixed base seat is fixed on the base seat. The moving base seat is arranged on the base seat and is fixedly connected with the guiding nut. The two clamping boxes are respectively installed on the fixed base seat and the moving base seat. Each clamping box comprises a box body, wherein a front end face of the box body is opened, the back end face of the box body is provided with an air hole, a plurality of rows of fixture sheet layers are placed inside the box body and penetrate through the front end face of the box body, the fixture sheet layers are limited by a limiting block, each fixture sheet layer is formed by multiple frontal fixture sheets and multiple reversed fixture sheets being overlaid at intervals in sequence, and a positioning locking nut and a plurality of adjusting locking nuts are used for locking. The multi-point flexible fixture is simple in structure, and easy to operate. Besides, the multi-point flexible fixture can be used for clamping various complex parts quickly and efficiently, and has a good application prospect.

Description

多点柔性夹具Multi-point flexible fixture

技术领域 technical field

本发明属于夹具夹持技术领域,尤其涉及一种多点柔性夹具装置。 The invention belongs to the field of clamp clamping technology, in particular to a multi-point flexible clamp device.

背景技术 Background technique

航空工业是一个国家工业实力的集中体现,该领域内集中各领域的尖端技术,它的持续发展将推动着新材料、新工艺及先进制造等技术的发展。为此,现阶段国家大力发展航空工业,与此同时困扰其发展的诸多技术及装备问题亟需解决。 The aviation industry is a concentrated expression of a country's industrial strength. In this field, cutting-edge technologies in various fields are concentrated. Its continuous development will promote the development of new materials, new processes and advanced manufacturing technologies. For this reason, the country is vigorously developing the aviation industry at this stage, and at the same time many technical and equipment problems that plague its development need to be resolved urgently.

飞机制造具有尺寸大、零件形状复杂且种类繁多、气动外形严格及加工精度高等特点。目前随着我国数字制造技术的发展及其高端数控机床技术方面的突破,机加件已实现了全数字集成制造,但是复杂零件由于柔度大,难以使用传统夹具夹持,因此难以实现全程数字化的柔性制造。国内各大航空集团主要采用模线样板等传统的模拟量工作法,应用仿形架固定复杂零件以实现后续的机加工,大大增加了飞机制造的准备周期和成本。随着机种的增加,其夹具也占用了企业大量的管理资源和库存面积。因此,复杂零件装夹制造已成为飞机全机数字化制造、装配的瓶颈。另外,在轮船、动车制造过程中,也存在相同的技术难题。 Aircraft manufacturing has the characteristics of large size, complex shape and variety of parts, strict aerodynamic shape and high processing precision. At present, with the development of digital manufacturing technology in my country and breakthroughs in high-end CNC machine tool technology, machined parts have achieved full digital integrated manufacturing, but complex parts are difficult to use traditional fixtures due to their high flexibility, so it is difficult to achieve full digitalization flexible manufacturing. Major domestic aviation groups mainly use traditional analog quantity work methods such as mold line templates, and use profiling frames to fix complex parts for subsequent machining, which greatly increases the preparation cycle and cost of aircraft manufacturing. With the increase of machine types, its fixtures also occupy a large amount of management resources and inventory area of the enterprise. Therefore, the clamping and manufacturing of complex parts has become the bottleneck of digital manufacturing and assembly of the whole aircraft. In addition, the same technical difficulties also exist in the manufacturing process of ships and trains.

发明内容 Contents of the invention

本发明的目的是针对上述复杂零件制造过程中的技术现状,提供一种多点柔性夹具,该多点柔性夹具能够实现对不同尺寸,不同形状的复杂零件的夹持。 The object of the present invention is to provide a multi-point flexible fixture for the technical status quo in the manufacturing process of the above-mentioned complex parts, which can realize the clamping of complex parts of different sizes and shapes.

本发明实现上述技术目的所采用的技术方案为:一种多点柔性夹具,它包括底座、驱动部分和夹持部分,其中,驱动部分主要由导螺母、丝杠手柄和丝杠组成,夹持部分主要由固定基座、移动基座和两个夹持箱组成;底座为一中空箱体,一侧开有丝杆孔,顶部开有导向槽,丝杠一端连接丝杠手柄,另一端由丝杆孔伸入底座;导螺母与丝杠螺纹旋接,并从导向槽伸出底座;固定基座固定在底座上,移动基座置于底座上并与导螺母固定连接,两个夹持箱分别安装在固定基座和移动基座上;所述夹持箱包括一箱体,箱体的前端面开口,后端面开有通气孔,若干排夹具片层置于箱体内并由箱体的前端面伸出,夹具片层由限位块限位;每层夹具片层由多个正面的夹具片和反面的夹具片依次间隔叠加而成,并由定位紧定螺钉和若干调节紧定螺钉紧定。 The technical solution adopted by the present invention to achieve the above technical purpose is: a multi-point flexible clamp, which includes a base, a driving part and a clamping part, wherein the driving part is mainly composed of a guide nut, a screw handle and a screw, and the clamping The part is mainly composed of a fixed base, a mobile base and two clamping boxes; the base is a hollow box with a screw hole on one side and a guide groove on the top. One end of the screw is connected to the screw handle, and the other end is The screw hole extends into the base; the lead nut is threadedly connected with the lead screw, and extends out of the base from the guide groove; the fixed base is fixed on the base, the movable base is placed on the base and fixedly connected with the guide nut, and the two clamp The boxes are respectively installed on the fixed base and the mobile base; the clamping box includes a box body, the front end of the box is open, and the rear end is provided with ventilation holes, and several rows of clamp sheets are placed in the box and are controlled by the box. The front end of the clamp protrudes, and the clamping layer is limited by the limit block; each layer of the clamping layer is composed of multiple positive clamping plates and negative clamping plates in sequence, and is fixed by positioning screws and a number of adjustments. The screws are tight.

进一步地,所述夹持箱还可以包括一夹具罩,夹具罩夹持在箱体的凹槽上,罩住箱体的前端面,且能自由拆卸。 Further, the clamping box may further include a clamp cover, which is clamped on the groove of the box body, covers the front end of the box body, and can be freely disassembled.

进一步地,所述夹具片具有凹槽,限位块通过该凹槽对夹具片进行限位。  Further, the clamping piece has a groove, and the limiting block limits the clamping piece through the groove. the

与现有技术相比,本发明的有益效果如下: Compared with the prior art, the beneficial effects of the present invention are as follows:

1、本发明结构简单,易于操作; 1. The present invention has simple structure and is easy to operate;

2、通过设置许多夹具片、且夹具片成正反两个状态,可实现夹具对复杂零件的多点夹持; 2. By setting up many fixture pieces, and the fixture pieces are in two states of positive and negative, the multi-point clamping of complex parts by the fixture can be realized;

3、通过设置通气孔,可使夹具片处于有弹性的推理下,尽可以实现每个夹具片都跟复杂零件接触,又不至于加伤工件; 3. By setting the vent hole, the fixture piece can be under elastic reasoning, so that each fixture piece can be in contact with complex parts as much as possible without damaging the workpiece;

4、通过设置紧定螺钉,可以调整工作能够自由调节工作的夹具片的个数,夹持的宽度,从而适应不同尺寸和形状的复杂零件; 4. By setting the set screw, the work can be adjusted freely. The number of clamp pieces and the clamping width can be adjusted freely, so as to adapt to complex parts of different sizes and shapes;

5、通过设置夹具罩,安装上夹具罩以后,可实现传统夹具的夹持任务。 5. By setting the fixture cover and installing the fixture cover, the clamping task of the traditional fixture can be realized.

6、通过旋转箱体的安装角度,可实现不同的复杂零件不同方位的夹持任务,进而实现后续加工。 6. By rotating the installation angle of the box, it can realize the clamping tasks of different complex parts in different directions, and then realize the subsequent processing.

7、通过本发明的多点柔性夹具能够快速、高校、地夹持多种复杂零件,具有优良的应用前景。 7. The multi-point flexible clamp of the present invention can quickly, efficiently and efficiently clamp a variety of complex parts, and has excellent application prospects.

附图说明 Description of drawings

图1是本发明实施例中多点成型夹具的正视图; Fig. 1 is the front view of multi-point forming jig in the embodiment of the present invention;

图2是本发明实施例中夹具片的俯视图; Fig. 2 is the top view of clamp sheet in the embodiment of the present invention;

图3是本发明实施例中夹具片的正视图; Fig. 3 is the front view of clamp sheet in the embodiment of the present invention;

图4是本发明实施例中夹具片正反状态工作状态下的俯视图; Fig. 4 is a top view of the working state of the front and back of the clamp piece in the embodiment of the present invention;

图5是本发明实施例中夹具片正反状态工作状态下的正视图; Fig. 5 is a front view of the working state of the front and back of the clamp piece in the embodiment of the present invention;

图6是本发明实施例中可移动的夹持部分的俯视图; Fig. 6 is a top view of the movable clamping part in the embodiment of the present invention;

图7是本发明实施例中安装上夹具罩的夹持部分的俯视图; Fig. 7 is the top view of the clamping part where the upper clamp cover is installed in the embodiment of the present invention;

图8是本发明实施例中箱体的另一个安装状态的正视图; Fig. 8 is a front view of another installation state of the box body in the embodiment of the present invention;

图9是本发明实施例中限位功能的另一种实现形式的正视图; Fig. 9 is a front view of another implementation form of the limit function in the embodiment of the present invention;

图中,底座1、固定基座2、箱体3、通气孔4、正面的夹具片5、限位块6、定位紧定螺钉7、复杂零件8、反面的夹具片9、移动基座10、导螺母11、丝杠手柄12、丝杠13、调节紧定螺钉14、夹具罩15、压紧片16、长螺栓17。 In the figure, the base 1, the fixed base 2, the box body 3, the vent hole 4, the front clamp piece 5, the limit block 6, the positioning set screw 7, the complex parts 8, the reverse clamp piece 9, and the mobile base 10 , Guide nut 11, lead screw handle 12, lead screw 13, adjustment set screw 14, clamp cover 15, compression piece 16, long bolt 17.

具体实施方式 Detailed ways

下面结合附图与实施例对本发明作进一步详细描述,需要指出的是,以下所述实施例旨在便于对本发明的理解,而对其不起任何限定作用。 The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be noted that the following embodiments are intended to facilitate the understanding of the present invention, but do not limit it in any way.

如图1所示,本发明多点柔性夹具包括底座1、驱动部分和夹持部分,其中,驱动部分主要由导螺母11、丝杠手柄12和丝杠13组成,夹持部分主要由固定基座2、移动基座10和两个夹持箱组成。底座1为一中空箱体,一侧开有丝杆孔,顶部开有导向槽,丝杠13一端连接丝杠手柄12,另一端由丝杆孔伸入底座1,可在底座1内自由转动。导螺母11与丝杠13螺纹旋接,并从导向槽伸出底座1。固定基座2固定在底座1上,移动基座10置于底座1上并与导螺母11固定连接。两个夹持箱分别安装在固定基座2和移动基座10上。 As shown in Figure 1, the multi-point flexible fixture of the present invention includes a base 1, a driving part and a clamping part, wherein the driving part is mainly composed of a guide nut 11, a lead screw handle 12 and a lead screw 13, and the clamping part is mainly composed of a fixed base Seat 2, mobile base 10 and two clamping boxes form. The base 1 is a hollow box with a screw hole on one side and a guide groove on the top. One end of the screw 13 is connected to the screw handle 12, and the other end extends into the base 1 through the screw hole, and can rotate freely in the base 1. . The guide nut 11 is threadedly connected with the lead screw 13, and protrudes from the base 1 from the guide groove. The fixed base 2 is fixed on the base 1 , the mobile base 10 is placed on the base 1 and fixedly connected with the guide nut 11 . The two clamping boxes are installed on the fixed base 2 and the mobile base 10 respectively.

如图1和图8所示,夹持箱包括一箱体3,箱体3的前端面开口,后端面开有通气孔4,若干排(图8中为两排)夹具片层置于箱体3内并由箱体3的前端面伸出,夹具片层由限位块6限位,防止夹具片由箱体3的前端面脱落。如图4-6所示,每层夹具片层由多个正面的夹具片5和反面的夹具片9依次间隔叠加而成,并由定位紧定螺钉7(在竖直方向上)和若干调节紧定螺钉14(在垂直于纸面的方向上)紧定。 As shown in Figure 1 and Figure 8, the clamping box includes a box body 3, the front surface of the box body 3 is open, and the rear end surface is opened with a ventilation hole 4, and several rows (two rows in Figure 8) of clamping sheets are placed in the box. Inside the body 3 and protruding from the front end of the box body 3 , the clamp sheet is limited by the stopper 6 to prevent the clamp sheet from falling off from the front end surface of the box body 3 . As shown in Figure 4-6, each layer of jig sheet is formed by stacking a plurality of front jig pieces 5 and reverse jig pieces 9 at intervals, and is adjusted by positioning set screws 7 (in the vertical direction) and several adjustments. The set screw 14 (in the direction perpendicular to the paper) is tightened.

夹具片的结构如图2和3所示,其上下面平行,尾部平整,中间具有限位槽,头部为非对称形状,当正面的夹具片5和反面的夹具片9依次间隔叠加时,可更好地夹持复杂零件8。 The structure of the jig piece is shown in Figures 2 and 3, the upper and lower sides are parallel, the tail is flat, there is a limit groove in the middle, and the head is an asymmetric shape. When the front jig piece 5 and the back jig piece 9 are stacked at intervals, For better gripping of complex parts8.

如图7所示,夹持箱还可以包括一夹具罩15,夹具罩15夹持在箱体3的凹槽上,罩住箱体3的前端面,且能自由拆卸。 As shown in FIG. 7 , the clamping box can also include a clamp cover 15 , which is clamped on the groove of the box body 3 , covers the front end of the box body 3 , and can be freely disassembled.

如图9所示,夹具片层也可以由长螺栓17限位,并由压紧片16紧定。 As shown in FIG. 9 , the clamp sheets can also be limited by long bolts 17 and tightly fixed by pressing pieces 16 .

本发明的工作过程如下:首先,根据复杂零件8的实际宽度调节紧定螺钉14,使工作的夹具片5、9的宽度调整到能够夹持复杂零件8的宽度;同时,调节紧定螺钉7,使夹具片5、9能够移动。  The working process of the present invention is as follows: first, according to the actual width adjustment set screw 14 of complex part 8, the width of the clamping piece 5,9 that makes work is adjusted to the width that can clamp complex part 8; Simultaneously, adjust set screw 7 , so that the clamp pieces 5, 9 can move. the

然后,通过通气孔4往箱体3内同高压气体,使工作的夹具片5、9向前顶到限位块6;接着,转动手柄12,在丝杠13的驱动下,导螺母11移动,带动移动基座10沿丝杠13的轴线方向上移动,使两夹持箱之间的距离减小。 Then, the high-pressure gas is sent into the box body 3 through the vent hole 4, so that the working clamp pieces 5 and 9 are pushed forward to the limit block 6; then, the handle 12 is turned, and the lead nut 11 moves under the drive of the lead screw 13. , to drive the mobile base 10 to move along the axial direction of the lead screw 13, so that the distance between the two clamping boxes is reduced.

当两夹持箱之间的距离稍大于复杂零件8的厚度时,把复杂零件8放置到夹持箱中间,继续转动手柄12,使设置的工作的夹具片5、9和复杂零件8都接触,此时,拧紧紧定螺钉7,完成复杂零件8夹持任务,进行后续的机加工。 When the distance between the two clamping boxes is slightly greater than the thickness of the complex part 8, the complex part 8 is placed in the middle of the clamping box, and the handle 12 is continued to be rotated, so that the set working fixture sheets 5, 9 and the complex part 8 are all in contact. , at this time, tighten the set screw 7 to complete the clamping task of the complex part 8 and carry out subsequent machining.

待加工完毕,反向转动丝杠13手轮,取下复杂零件8,使移动基座10回到原始位置。 After the processing is completed, turn the hand wheel of the leading screw 13 in the opposite direction, take off the complex part 8, and make the mobile base 10 get back to the original position.

以上是本发明多点柔性夹具的一次完整工作过程,通过该夹持过程集完成了对不同尺寸的复杂零件8的夹持任务。 The above is a complete working process of the multi-point flexible clamp of the present invention, and the clamping task of complex parts 8 of different sizes is completed through the set of clamping processes.

以上所述的实施例对本发明的技术方案和有益效果进行了详细说明,应理解的是以上所述仅为本发明的具体实施例,并不用于限制本发明,凡在本发明的原则范围内所做的任何修改、补充和等同替换等,均应包含在本发明的保护范围之内。 The embodiments described above have described the technical solutions and beneficial effects of the present invention in detail. It should be understood that the above descriptions are only specific embodiments of the present invention, and are not intended to limit the present invention. All within the scope of the principles of the present invention Any modifications, supplements and equivalent replacements should be included within the protection scope of the present invention.

Claims (3)

1. multi-point flexibly fixture, it is characterized in that, it comprises base (1), drive part and retained part, wherein, drive part mainly is comprised of guiding nut (11), leading screw handle (12) and leading screw (13) etc., and retained part mainly is comprised of fixed pedestal (2), mobile foundation (10) and two clamping casees; Base (1) is a hollow box body, and a side has screw hole, and the top has gathering sill, and leading screw (13) one ends connect leading screw handle (12), and the other end stretches into base (1) by screw hole; Guiding nut (11) spins with leading screw (13) screw thread, and from gathering sill protuberate basic unit (1); Fixed pedestal (2) is fixed on base (1), and mobile foundation (10) is placed in base (1) upward and is fixedly connected with guiding nut (11), and two clamping casees are arranged on respectively on fixed pedestal (2) and mobile foundation (10); Described clamping case comprises a casing (3), and the front end face opening of casing (3), rear end face have passage (4), and some bar clamp sheets are placed in casing (3) and are stretched out by the front end face of casing (3), and the fixture lamella is spacing by limited block (6); Every layer of fixture lamella is formed by stacking at the interval successively by the clamp sheet (5) in a plurality of fronts and the clamp sheet (9) of reverse side, and by location holding screw (7) and some adjusting holding screws (14) tightening.
2. multi-point flexibly fixture according to claim 1, is characterized in that, described clamping case can also comprise a fixture cover (15), and fixture cover (15) is clamped on the groove of casing (3), covers the front end face of casing (3), and can freely dismantle.
3. multi-point flexibly fixture according to claim 1, is characterized in that, described clamp sheet has groove, and limited block (6) carries out spacing by this groove to clamp sheet.
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CN103753309A (en) * 2014-01-24 2014-04-30 山东天岳先进材料科技有限公司 Clamping tool for irregular object
CN104708552A (en) * 2015-02-10 2015-06-17 吴中区甪直渡岘工艺品厂 Artware processing equipment
CN105149984A (en) * 2015-09-01 2015-12-16 上海大学 A fixture device
CN105945595A (en) * 2016-05-18 2016-09-21 常州市金海基机械制造有限公司 Clamp used for machining of mechanical parts
CN106392934A (en) * 2016-10-26 2017-02-15 惠州市黑娜尔科技有限公司 Clamp
CN106624560A (en) * 2016-12-29 2017-05-10 重庆王滔机械制造有限公司 Welding fixing device
CN108060405A (en) * 2018-01-18 2018-05-22 上海应用技术大学 A kind of flexible fixture that coating is carried out for bearing roller
CN109732503A (en) * 2018-12-20 2019-05-10 安徽米科智能科技有限公司 A kind of bracket distance-variable type fast uniform clamping device
CN111360564A (en) * 2020-04-22 2020-07-03 周江宏 Fool-proof device for numerical control machine tool workpiece processing safety
CN112091684A (en) * 2020-09-09 2020-12-18 汪恒飞 Self-attaching curved surface positioning flexible fixture

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