CN201338039Y

CN201338039Y - Bending device for U-shaped beam

Info

Publication number: CN201338039Y
Application number: CNU2008202269559U
Authority: CN
Inventors: 孙淑华
Original assignee: Jinan Casting & Forging Jiemai Machinery Co Ltd
Current assignee: Jinan Casting & Forging Jiemai Machinery Co Ltd
Priority date: 2008-12-15
Filing date: 2008-12-15
Publication date: 2009-11-04
Anticipated expiration: 2018-12-15

Abstract

The utility model discloses a bending device for a U-shaped beam, which comprises a static bed body and a shifting bed body. The static bed body is connected with the shifting bed body through a connection shaft. A clamping device is arranged on the static bed body. A second upper clamping fixture and a second lower clamping fixture are respectively arranged on the shifting bed body. The shifting bed body is connected with a power unit. The lower part of the second upper clamping fixture or the upper part of the second lower clamping fixture is provided with a groove. A driving device is arranged in the groove. A probe and a linear displacement sensor are arranged on the driving device. The utility model has the advantages that: arranging a measuring device in the bending device can realize to measure the rebound angle of the U-shaped beam inside the bending device for the U-shaped beam, so as to greatly increase measurable range of workpieces; the structure position is reasonable and the measurment is more exact; the measuring device cannot effect the use of the bending device for the U-shaped beam, and the bending device for the U-shaped beam need not to be adjusted when bending for the workpieces with different lengths or bending angles so as to have convenient use and high productivity effect.

Description

A kind of " U " type beam bending apparatus

Technical field

The utility model relates to the apparatus for bending field, specifically is " U " type beam bending apparatus that a kind of inside is provided with measurement mechanism.

Background technology

" U " type beam bending production line is the special equipment of the local bending and forming of novel truck and large-scale carrying longitudinal beam and buttress brace in the automobile industry.Because " U " type beam generally adopts the special steel to make, its tensile strength height, therefore in the bending process, rebound phenomenon can appear in " U " type beam after the bending.This generally can only rely on bending once more behind artificial experience bending or the manual measurement spring back angle, inefficiency, and bending precision is low.Utility model artificially solves the resilience problem in " U " type beam bending process, applies for once that a key name was called the patent of automobile longitudinal girder bending mechanism, and the patent No. is: 200520081554.5.This mechanism can be in " U " type beam bending process, " U " type beam spring back angle is measured, but because its measuring mechanism is positioned at the bending equipment outside, therefore can't carry out the spring back angle measurement apart from " U " type beam to the short beam or first bending less than 700mm, cause the section bar bending of the type still can only rely on artificial experience to carry out bending, error is very big, have a strong impact on product quality, and in the bending process, external measurement device can limit the anglec of rotation of movable bed body, changes the bending angle if desired, also needs to adjust separately the position of external measurement device, use trouble, influence operating efficiency.

Summary of the invention

The purpose of this utility model is to provide a kind of " U " type beam bending apparatus, it can solve the deficiency that exists in the known technology, by measurement mechanism being set in " U " type beam bending apparatus inside, increased measurement category greatly, can realize of the measurement of short beam or first bending distance less than " U " type beam spring back angle of 700mm, minimum measurement category can reach 50mm, has increased the scope of application.

The utility model for achieving the above object, be achieved through the following technical solutions: a kind of " U " type beam bending apparatus, comprise quiet lathe bed and movable bed body, quiet lathe bed is connected by connecting axle with the movable bed body, on the quiet lathe bed clamping device is installed, and movable bed is installed the anchor clamps and second lower clamp on second on one's body respectively, the movable bed body is connected with power set, groove is offered on the anchor clamps bottom or the second lower clamp top on second, and drive unit is installed in the groove, and probe and linear displacement transducer are installed on the drive unit.Setting angle displacement transducer on the connecting axle.Linear displacement transducer is a grating displacement transducer.On the quiet lathe bed controller is set, controller respectively with angle displacement sensor, drive unit, power set, first on the anchor clamps, second anchor clamps be connected drive unit with linear displacement transducer be pneumatic cylinder.Probe is the arc surfaced structure.

Advantage of the present utility model is: by in inside measurement mechanism being set, can be implemented in the utility model inside measures " U " type beam spring back angle, increased the measurable range of workpiece greatly, it can survey the minimum 35mm-50mm of reaching of first bending distance, measure thereby make the utility model to carry out spring back angle less than the workpiece of 700mm short beam or first bending distance, significantly improved product especially short beam and first bending distance less than the quality of the workpiece of 700mm; Locations of structures is reasonable, relative existing equipment, and measurement mechanism of the present utility model near the bending point, is measured more accurate more; Measurement mechanism can not influence use of the present utility model, when the workpiece to different length or bending angle carries out bending, need not to adjust, and is easy to use, the production efficiency height; Reasonable in design, error is little; Automatic Control, labor strength is low; Can write down spring back angle automatically, be convenient to analyze rational bending value, thereby improve the efficient of extensive bending workpieces, be convenient to suitability for industrialized production etc.

Description of drawings

Accompanying drawing 1 is a main TV structure schematic diagram of the present utility model; Accompanying drawing 2 is local structure for amplifying schematic diagrames of I portion in the accompanying drawing 1.

The specific embodiment

Agent structure of the present utility model has quiet lathe bed 10 and movable bed body 9, and quiet lathe bed 10 is connected by connecting axle 12 with movable bed body 9.Connecting axle 12 generally is positioned at the middle part of quiet lathe bed 10 and movable bed body 9.In the work, quiet lathe bed 10 is maintained fixed motionless, and movable bed body 9 rotates around connecting axle 12.On the quiet lathe bed 10 clamping device is installed, the anchor clamps 8 and second lower clamp 5 on second are installed respectively on the movable bed body 9.Movable bed body 9 is connected with power set 13, and movable bed body 9 rotates around connecting axle 12 under the driving of power set 13.Groove 17 is offered on anchor clamps 8 bottoms or second lower clamp, 5 tops on second, and drive unit 3 is installed in the groove 17, and drive unit 3 flexible ends are gone up probe 1 and linear displacement transducer 4 are installed.

Because anchor clamps 8 bottoms are offered groove 17 and drive unit 3 is installed on second, it also need measure the displacement of anchor clamps 8 on second when the actual measurement spring back angle, uses comparatively complexity, influences certainty of measurement easily.Therefore preferred embodiment of the utility model is to offer groove 17 and drive unit 3 is installed on second lower clamp, 5 tops.

On the connecting axle 12 angle displacement sensor being set, can be that the bending angle of section bar 11 is measured to the gyration that selects of movable bed body 9.Also can pass through other measurement device bending angles, manual measurement etc. for example, but its efficient is not as the described structure of present embodiment.Power set 13 can be installed on the quiet lathe bed 10 or on the utility model external fixation device, be preferably mounted on the quiet lathe bed 10, and are easy to use.Power set 13 can be hydraulic cylinder, pneumatic cylinder or drive motors, general preferred hydraulic cylinder, and its power output is high and steady.As shown in Figure 1, in the present embodiment, the hydraulic cylinder stiff end is installed in quiet lathe bed 10 bottoms, and its flexible end is connected with movable bed body 9 bottoms.

The clamping device of installing on the quiet lathe bed 10 in the utility model is made up of the anchor clamps 7 on first and second lower clamp 6, adopts other known clamping devices also passable.In the present embodiment, on first on the anchor clamps 7 and second anchor clamps 8 are removable anchor clamps, be respectively equipped with actuating unit on it, and can actuating unit draw the lower edge separately track move, this actuating unit can be hydraulic cylinder, pneumatic cylinder or drive motors etc., the general hydraulic cylinder of selecting, its pressure that provides is high and stable, clamps effective.First lower clamp 6 and second lower clamp 5 can be stationary fixture or removable anchor clamps, general preferred stationary fixture, and under holding state, make the upper surface of first lower clamp 6 and second lower clamp 5 remain on same horizontal plane, can improve the precision of clamp like this, while is the location survey position accurately, improves certainty of measurement.

Linear displacement transducer 4 described in the utility model can be an inductive displacement transducer, capacitive displacement transducer, and multiple structure such as optical displacement sensor, preferred grating displacement transducer, its volume is little, precision is high.Drive unit 3 can be hydraulic cylinder, pneumatic cylinder etc., but because its installation site is less, general preferred pneumatic cylinder.In the utility model when work,, section bar 11 is under non-measurement state, and pneumatic cylinder is withdrawn fully, makes probe 1 and linear displacement transducer 4 be hidden in second lower clamp 5, section bar 11 by and be not affected during bending.

In order to reduce error, it is arcuate structure or dome shape structure that the utility model adopts probe 1, in measurement, and the flat relatively probe of arcuate structure or dome shape, error is littler.

For realizing the utility model automation control, on quiet lathe bed 10, controller 14 is set, controller 14 respectively with angle displacement sensor, drive unit 3, power set 13, first on the anchor clamps 7, second anchor clamps 8 be connected with linear displacement transducer 4.Can prestore in the controller 14 bending angle, the automatic angle measured of recording angular displacement transducer and linear displacement transducer 4, and the utility model controlled automatically, bending goes out satisfactory " U " type beam automatically.

In the utility model when work, be transported to section bar 11 on first lower clamp 6 and second lower clamp 5, on first on the anchor clamps 7 and second anchor clamps 8 descending respectively, clamp section bar 11.Power set 13 drive movable bed body 9 and rotate, and according to designing requirement section bar 11 are carried out first bending.After the first bending, anchor clamps 8 are up on second, and movable bed body 9 revolution certain angles make second bed die 5 leave section bar 11, remove the constraint to section bar 11 dogleg section.At this moment, section bar 11 can be to angle of bending resilience in the other direction, and drive unit 3 drives grating displacement transducer and probe 1, and probe 1 touches section bar 11, grating displacement transducer is measured this angle A, and section bar 11 requires the difference of bending angle and angle A to be spring back angle C.After measuring end, drive unit 3 is regained grating displacement transducers and probe 1.Power set 13 drive movable bed body 9 rotation once more, make second bed die 5 compress anchor clamps 8 descending clamping section bar 11 dogleg section on the section bar 11, the second.The utility model carries out the secondary bending then, and secondary bending angle is that section bar 11 requires the bending angle to add resilience angle C.After the secondary bending, drive unit 3 drives grating displacement transducer and probe 1, measures actual bending angle B.More than the actual bending angle B of section bar is controlled and write down to operation by controller 14, and actual bending angle B and section bar 11 require the bending angle relatively, when reaching specification requirement, stop bending, send section bar 11.

In a collection of identical workpiece of bending, note spring back angle C at initial workpiece bending process middle controller 14, the bending angle of other section bar is the section bar required angle and adds resilience angle C.After this operation can directly be carried out bending to section bar with above-mentioned bending angle, after the bending, measures actual bending angle B once more, requires the bending angle relatively actual bending angle B and section bar 11, when reaching specification requirement, stops bending, sends section bar 11.

Claims

1, a kind of " U " type beam bending apparatus, comprise quiet lathe bed (10) and movable bed body (9), quiet lathe bed (10) is connected by connecting axle (12) with movable bed body (9), quiet lathe bed (10) is gone up clamping device is installed, anchor clamps on second (8) and second lower clamp (5) are installed respectively on the movable bed body (9), movable bed body (9) is connected with power set (13), it is characterized in that: groove (17) is offered on (8) bottom of anchor clamps on second or second lower clamp (5) top, drive unit (3) is installed in the groove (17), and drive unit (3) is gone up probe (1) and linear displacement transducer (4) is installed.

2, a kind of " U " according to claim 1 type beam bending apparatus is characterized in that: connecting axle (12) is gone up the setting angle displacement transducer.

3, a kind of " U " according to claim 1 type beam bending apparatus, it is characterized in that: linear displacement transducer (4) is a grating displacement transducer.

4, a kind of " U " according to claim 2 type beam bending apparatus, it is characterized in that: controller (14) is set on the quiet lathe bed (10), controller (14) respectively with angle displacement sensor, drive unit (3), power set (13), first on the anchor clamps (7), second anchor clamps (8) be connected with linear displacement transducer (4).

5, a kind of " U " according to claim 4 type beam bending apparatus, it is characterized in that: drive unit (3) is a pneumatic cylinder.

6, according to claim 1,4 or 5 each described a kind of " U " type beam bending apparatus, it is characterized in that: probe (1) is the arc surfaced structure.