CN201094976Y

CN201094976Y - Bender for forming lower chair plate of excavator

Info

Publication number: CN201094976Y
Application number: CNU2007200807656U
Authority: CN
Inventors: 张明军; 李庸全; 何鑫
Original assignee: SICHUAN CHENGGONG ENGINEERING-MACHINE STOCK Co Ltd
Current assignee: SICHUAN CHENGGONG ENGINEERING-MACHINE STOCK Co Ltd
Priority date: 2007-08-22
Filing date: 2007-08-22
Publication date: 2008-08-06
Anticipated expiration: 2017-08-22

Abstract

The utility model discloses a bending machine that is used for forming the lower masonry plate of an excavator and relates to the technological field of engineering machinery. The bending machine comprises an upper die, a V-shaped die that is fixed on a base, and a lower die that is arranged in the V-shaped groove of the V-shaped die and matches the V-shaped groove. The cross section of the lower die is V-shaped and consists of an arc-shaped upside, a left side and a right side, the latter two of which match the V-shaped groove; the lowest sunk part of the arc-shaped upside closely contacts the forming part of the formed lower masonry plate. In the bending machine, the two ends of the V-shaped groove are respectively provided with a lower die; the middle part of the V-shaped groove is provided with a lower die; the length of the lower die is different from the length of the V-shaped groove; thus the bending machine can effectively ensure the formation effects of parts to be processed and formed and simultaneously reduces the manufacturing difficulty and the cost of the dies.

Description

A kind of bender that is used for seat board shaping under the excavator

Technical field

The utility model relates to technical field of engineering machinery, exactly relates to a kind of equipment that is used for the following seat board bending and forming of excavator.

Background technology

Therefore down excavator needs to bear continually the alternation active force in working, vehicle frame is very important support component in the middle of the machine, and seat board is exactly the strength member of vehicle frame down down.The length of following seat board and the size of width are all near 3 meters, and the processing that is shaped is very difficult.At present, traditional processing mode is to adopt the hydraulic press of going up kiloton to cooperate very big finishing die to be shaped, and perhaps adopts existing bender simply to be shaped.On the one hand, adopt mode that hydraulic press is shaped not only cost height but also finishing die be not suitable for the part processing of many kinds, also take very much the place, workshop, now be eliminated substantially.On the other hand, existing bender generally includes the patrix to the part application of force that is formed, with the V-arrangement mould of shelving part and being fixed, formation of parts applies under the situation of external force at patrix, V-shaped groove inner bending at the V-arrangement mould is shaped, the slotted eye of V-shaped groove is deep, and the angle of depression is less, and existing bender has only the V-shaped groove of a size that different parts is processed usually.The shape of seat board resembles X-shaped under the excavator, because the special construction of seat board needs under the excavator, when adopting existing bender to be shaped, four of seat board jiaos have hypotenuse partly to bend when being shaped under the X-shaped, unsettled between the contact portion of following seat board and V-shaped groove, cause to be shaped not in placely, cause the following seat board bending part distortion after the shaping to upwarp, referring to Fig. 5.And this deformation place need expose outside, thereby has had a strong impact on the product shaping outward appearance, and is not attractive in appearance, and the quality of excavator is defective and reduced class in the heart the user thus also, and influence is sold.

Summary of the invention

For solving the problems of the technologies described above, the utility model proposes and a kind ofly have the part forming of hypotenuse, and forming effect is good, specious bender at seat board class under the excavator.

The technical solution adopted in the utility model is as follows:

A kind of bender that is used for seat board shaping under the excavator, comprise patrix, be fixed in the V-arrangement mould on the base, it is characterized in that: be provided with counterdie in the v-depression of described V-arrangement mould with its coupling, the cross section of described counterdie is a V-arrangement, the V-arrangement cross section is by the arc top, constitutes with the limit, left side and the right edge of described v-depression coupling, and the forming section after the bottommost of described arc top depression and the following seat board shaping closely contacts.

The camber ratio limit, left side of described arc top and the angle that right edge forms are big.

The contact-making surface of limit, described left side and right edge and v-depression has the hole of cooling down.

Described counterdie is three, and the two ends of v-depression are respectively established one, and the centre is established one.

Advantage of the present utility model is:

1, because adopting to be provided with, the utility model is convenient to the counterdie that seat board down is shaped between the patrix of existing bender and V-arrangement mould, and the following seat board forming section after the bottommost of the arc top of counterdie depression and the shaping closely contacts, thereby effectively avoided in the forming process situation generation that following seat board is shaped not in place.Forming effect is good, and the forming section of following seat board can not be out of shape and upwarps, and transitions smooth has the arc-shaped transition effect the same with the arc top, and is specious, thereby increased the sales achievement of excavator.

2, the utility model improves on existing bender, and is simple in structure, makes assembling easily, is particularly useful for seat board class under the excavator is had the bending shaping of the part of hypotenuse.

3, have the hole of cooling down in the middle of counterdie and the V-arrangement mould both sides, avoid interfering.

4, the utility model adopts and respectively establishes a counterdie at the two ends of v-depression, a counterdie is established in the centre, and the length of counterdie need not be made the same longly with the length of v-depression, when guaranteeing processed shaping part forming effect effectively, reduced mould manufacture difficulty and cost.

Description of drawings

Fig. 1 is an overall structure schematic diagram of the present utility model

Fig. 2 is the design of part schematic diagram of seat board under the excavator

Fig. 3 is the left view behind the part forming of seat board under the excavator among Fig. 2

Fig. 4 is the structural representation of counterdie

The specific embodiment

Embodiment 1

A kind of bender that is used for seat board 8 shapings under the excavator, comprise patrix 1, be fixed in the V-arrangement mould 2 on the base, be provided with counterdie 3 in the v-depression of described V-arrangement mould 2 with its coupling, the cross section of described counterdie 3 is a V-arrangement, the V-arrangement cross section is by arc top 4, constitutes with the limit, left side 5 and the right edge 6 of described v-depression coupling, and the forming section 9 after the bottommost 7 of described arc top 4 depressions and following seat board 8 shapings closely contacts.The angle that the camber ratio limit 5, left side of described arc top 4 and right edge 6 form is big.Limit 5, described left side and right edge 6 have the hole 10 of cooling down with the contact-making surface of v-depression.Described counterdie 3 is three, and the two ends of v-depression are respectively established one, and the centre is established one.

Embodiment 2

When following seat board 8 is shaped on the utility model, in the bender v-depression, put into the springback capacity of having considered part and with the counterdie 3 of v-depression coupling, bending and forming routinely then.Its process is: measure counterdie 3 shapes earlier, with CAD counterdie 3 figures that draw, draw with CAD and to have considered the parts pattern of springback capacity, position when CAD moves to the parts pattern of having considered springback capacity the shaping of counterdie 3 figures, reduce out required figure then, process sufficiently long counterdie 3, counterdie 3 is divided into several sections as required according to figure, with the counterdie after the segmentation 3 pad in v-depression, bending and forming routinely then; By above process, just finished the shaping of time seat board 8 on bender.

Claims

1, a kind of bender that is used for seat board shaping under the excavator, comprise patrix (1), be fixed in the V-arrangement mould (2) on the base, it is characterized in that: be provided with counterdie (3) in the v-depression of described V-arrangement mould (2) with its coupling, the cross section of described counterdie (3) is a V-arrangement, the V-arrangement cross section is by arc top (4), constitute with the limit, left side (5) and the right edge (6) of described v-depression coupling, the forming section (9) after the bottommost (7) of described arc top (4) depression and following seat board (8) shaping closely contacts.

2, the bender that seat board is shaped under the excavator according to claim 1 is characterized in that: the camber ratio limit (5), left side of described arc top (4) and the angle that right edge (6) forms are big.

3, the bender that seat board is shaped under the excavator according to claim 1 is characterized in that: limit, described left side (5) and right edge (6) have the hole of cooling down (10) with the contact-making surface of v-depression.

4, the bender that seat board is shaped under the excavator according to claim 1, it is characterized in that: described counterdie (3) is three, and the two ends of v-depression are respectively established one, and the centre is established one.