CN201147794Y

CN201147794Y - Apparatus for bending aluminum section bar into small radii circular arc

Info

Publication number: CN201147794Y
Application number: CNU2008200550745U
Authority: CN
Inventors: 周秋芳; 严荣庆; 郑晓军
Original assignee: SHANGHAI RUISILE DOORS AND WINDOWS CO Ltd; XINSHI ALUMINUM (SHANGHAI) CO Ltd; SHANGHAI ZHENXING ALUMINIUM INDUSTRY Co Ltd
Current assignee: SHANGHAI RUISILE DOORS AND WINDOWS CO Ltd; XINSHI ALUMINUM (SHANGHAI) CO Ltd; SHANGHAI ZHENXING ALUMINIUM INDUSTRY Co Ltd
Priority date: 2008-01-25
Filing date: 2008-01-25
Publication date: 2008-11-12
Anticipated expiration: 2018-01-25

Abstract

The utility model relates to a device capable of bending an aluminum profile into a small-diameter circular arc, which includes a circular arc-shaped female die which can bend a profile into a circular arc product profile on the demand, and a straight-line male die arranged on the circular arc-shaped female die; the profile includes a first profile and a second profile; the first and the second profiles respectively cling to both sides of the straight line male die; the back of the straight line male die is provided with a dependent wheel; the dependent wheel is arranged on the radial line of the circular arc-shaped female die and keeps a lead angle of 5 degrees to 15 degrees with the normal line of the profile; one end of the profile is connected with thte first clamping device of a work bench, and the other end is connected with the second clamping device of the straight line male die; the device can precisely bend the profile into a shape with the R/L less than 20 and about 2.5 to 3 at least; the bent profile is smooth without reductus; the size change is small (about 1mm); the repeatability of the circular arc is good; the finished product rate is high; the process is simple; and the processing cost is low.

Description

Aluminium section bar bends to the device of small-radius arc

Technical field

The utility model relates to a kind of device of aluminium section bar bending, relates in particular to the device that a kind of aluminium section bar bends to small-radius arc.

Background technology

Along with the application of aluminium section bar more and more widely, also more and more higher to the processing request of aluminium section bar, on door and window, like requirement aspect arc modeling and the arc decorative in order to satisfy people, section bar radius of curvature and direction in accordance with regulations need be bent to circular shape.

Method to the aluminium section bar bent arc in the prior art is stretch bending and rolls curved, but the method for these two kinds of bent arcs all requires arc radius (R) and the section bar generally can not be less than 20 along the ratio (R/L) of the thickness (L) of radial direction, when R/L will produce distortion less than 20 the time, cause not reaching requirement, and the method for these two kinds of bent arcs all exists dimensional uniformity difference and the low common fault of qualification rate.

Along with development of technology, with rolling on the curved equipment technology that adopts microcomputerized control is arranged also at stretch bending in the recent period, though dimensional accuracy and qualification rate improve, dimensional uniformity still rests on more than the Centimeter Level, and processing charges is higher relatively.

In design, necessarily require section bar circular arc R/L less than 20 the time, for can be with shape bending shape in the arc-shaped, abroad invented and a kind ofly carried out stretch bending again or roll curved method after section bar is reinforced into real plug material, shown in Figure 1A, Figure 1B, Fig. 1 C, the workpiece of p for bending, f is the square tube of suitable size, and s is that low melting point is filled metal (as: tin), and d is for needing crooked direction.This method is placed on section bar p among the square tube f earlier, pours into low-melting filling metal s again, and after the brake forming of d direction, heating is dissolved metal s again, thereby section bar p is bent to R/L less than 20 shape, and obvious this method technology is very complicated, and processing cost is high.

Summary of the invention

The utility model technical issues that need to address have provided the device that a kind of aluminium section bar bends to small-radius arc, are intended to solve the above problems.

In order to solve the problems of the technologies described above, the utility model is realized by following scheme:

The utility model comprises: a circular arc die that bends to circular arc product section bar as required, a linear punch that is placed on the circular arc die; Described section bar comprises: first section bar and second section bar; Described first section bar and second section bar are close to two sides of linear punch respectively; A roller is also settled at the back side behind the linear punch; Described roller keeps 5～15 preposition angles of spending on the RADIAL of circular arc die and with the section bar normal; One end of section bar and first clamping device of work top join, and second clamping device of the section bar other end and linear punch joins.

Compared with prior art, the beneficial effects of the utility model are: can accurately section bar be bent into R/L less than 20 shape, I reaches about 2.5～3, section bar after the bending is smooth, non-wrinkled, change in size little (about 1mm), the good reproducibility of circular arc, yield rate height; And technology is simple, processing cost is low.

Description of drawings

Figure 1A is the aluminium section bar schematic diagram that needs bending;

Figure 1B is that Figure 1A Z-Z is to profile;

Fig. 1 C is with the method for shape bending shape in the arc-shaped in the prior art;

Fig. 2 A is the apparatus structure schematic diagram that aluminium section bar of the present utility model bends to small-radius arc;

Fig. 2 B be Fig. 2 A at Y-Y to enlarged drawing;

Fig. 3 A is " clamping " schematic diagram in the utility model method step;

Fig. 3 B be in the utility model method step under the effect of power F " bent arc " schematic diagram;

Fig. 3 C is " finishing " schematic diagram after the shape of appointment in the utility model method step;

The specific embodiment:

Below in conjunction with the accompanying drawing and the specific embodiment the utility model is described in further detail:

As seen from Figure 2, shape bending of the present utility model becomes the device of small-radius arc to comprise: a circular arc die B who bends to circular arc product section bar as required, a linear punch C who is placed on the circular arc die B; Described section bar comprises: first section bar A1 and second section bar A2; Described first section bar A1 and second section bar A2 are close to two sides of linear punch C respectively; A roller D is also settled at the back side behind linear punch C; Described roller D keeps the preposition angles of β=5～15 degree on the RADIAL of circular arc die B and with the section bar normal; The first clamping device N of one end of section bar and work top joins, and the second clamping device M of the section bar other end and linear punch C joins.

Of the present utility modelly shape bending is become the method for small-radius arc realize by following steps:

By Fig. 3 A Fig. 3 B, Fig. 3 C as seen:

The product drawing that bends to circular arc as required requires to design circular arc die and linear punch;

With first section bar and section bar one end of second section bar and the end chucking of linear punch of the curved circle of needs, its other end is clamped on the work top separately;

Roller is tightened at the back back side of linear punch, and roller keeps 5～15 preposition angles of spending on the RADIAL of circular arc die and with the section bar normal;

Axle center with the circular arc die is the center of circle, and roller is applied the force of periphery, and section bar is bent to the circular shape of regulation along the profiling groove of circular arc die under the effect of linear punch.

In the method for the present utility model because the inside and outside acting in conjunction of circular arc die and linear punch, make section bar in BENDING PROCESS, can keep original shape, even bending radius very little can be not wrinkling yet, distortion, be bent to the angle of appointment at section bar after, can unclamp all fastening point, finish whole section bar bent arc process; In order to improve work efficiency, structure shown in Figure 2 can once be finished the curved circle processing of two section bars (" A1 " and " A2 ").

With respect to traditional stretch bending and roll and bend forming mode, remarkable advantage of the present utility model is fair The R/L that is permitted is minimum, if can reach when section bar has enough percentage elongation about 2.5～3, after the processing The arc size good reproducibility, the section bar cross sectional shape is even, change in size is little, production efficiency height, processing With low cost, be particularly useful for the production in enormous quantities processing of door-window kind section bar, and fundamentally solved The process technology difficult problem of opening profile minor radius side direction bent arc.

In the method for the present utility model because process (mechanical action order) relatively fixing, therefore, The machinery that the described curved round process of method of the present utility model can be designed to automation mechanized operation is established Standby, when needs are processed difform section bar, can design different according to the characteristics of concrete section bar Circular arc die and linear punch, thus the curved circle of realizing mass and mechanization is processed. This practicality Novel method does not have particular restriction substantially to the section bar cross sectional shape, and curved radius of circle only is subject to section bar itself The material percentage elongation, if usually material is under soft state, R/L ratio allows to reach 2.5～3 About, this is traditional stretch bending and roll bending is absolutely not reaches.

Claims

1. an aluminium section bar bends to the device of small-radius arc, it is characterized in that comprising: a circular arc die that bends to circular arc product section bar as required, a linear punch that is placed on the circular arc die; Described section bar comprises: first section bar and second section bar; Described first section bar and second section bar are close to two sides of linear punch respectively; A roller is also settled at the back side behind the linear punch; Described roller keeps 5～15 preposition angles of spending on the RADIAL of circular arc die and with the section bar normal; One end of section bar and first clamping device of work top join, and second clamping device of the section bar other end and linear punch joins.