CN201239760Y

CN201239760Y - Sectional type bender tool bit

Info

Publication number: CN201239760Y
Application number: CNU2008200300843U
Authority: CN
Inventors: 杨小泉; 周雪梅; 张风平; 姜洁; 贾永政; 张琳; 张�杰; 龚建军; 马翀; 王佳; 陶涛; 李彦昌; 冯强
Original assignee: Petrochina Lanzhou Petrochemical Co
Current assignee: Petrochina Lanzhou Petrochemical Co
Priority date: 2008-08-15
Filing date: 2008-08-15
Publication date: 2009-05-20
Anticipated expiration: 2018-08-15

Abstract

The utility model provides a cutter of a sectional type pipe bender, which comprises an upper die, a lower die, a matched base and a positioning block. The cutter is characterized in that a modularized segmental structure is adopted by the upper die and the lower die, the die is suitable for processing skeleton parts of various electrical cabinets, and can finish the processing of complex parts with multiple folded surfaces which can not be processed by the traditionally bending cutter; the die is easy to be disassembled and assembled during processing, even an individual cutter is damaged, only a section is required to be replaced for maintenance, so that the production can not be affected, and the maintenance is convenient and rapid; the sectional type cutter has the advantages of simple structure, low manufacturing cost, and reliable running, and effectively improves the processing precision and processing efficiency of the parts.

Description

Segmented bender cutter

Technical field

The utility model belongs to field of mechanical technique, relates to a kind of particular manufacturing craft of numerical control bender, relates in particular to a kind of segmented bender cutter.

Background technology

The numerical control bending cutter is the particular manufacturing craft of numerical control bender, is used for the bending and molding of sheet metal part, its plastic sheet metal part that goes out different shape.The numerical control bending rounding machine cutter that present numerical control bender producer generally uses is made up of whole upper die and lower die, base, locating piece etc., cutter is elongated type: if patrix damages, so whole cutter is just all scrapped, can only buy from equipment producer, buying or process a cover cutter head from equipment producer needs the long period, not only waste material, fund but also delay the duration; There are certain difficulty in cutter dismounting, maintenance; The cutter stroke is fixed: interference has taken place during many folding surfaces part bending how, and scratch, the part forming angle does not reach the drawing requirement, and the folding surface size does not reach margin of tolerance requirement.

Summary of the invention

The purpose of this utility model is at the deficiencies in the prior art, and a kind of segmented bender cutter is provided, and has not only saved cost, but also convenient the use, has improved the machining accuracy of part simultaneously.

Segmented bender cutter of the present utility model is made up of upper die and lower die and base, locating piece.Patrix is installed on the bender knife rest, and counterdie is fixed on the base, and locating piece is installed in the both sides of base.Wherein upper die and lower die adopt the modularization segmental structure.

The utility model compared with prior art has the following advantages:

1, upper die and lower die of the present utility model adopt the modularization segmental structure, the cutter segmentation is reasonable, be suitable for the processing of various regulator cubicle skeleton parts, can finish the many complex parts of folding surface that traditional bending cutter can not be processed, and the high moulding angle of the machining accuracy of part can both meet the drawing requirement; There are not phenomenons such as interference, scratch in process of production.

2, the utility model is easy to dismounting in process, even indivedual tool damage, maintenance is a certain section in the mold exchange more just, also can not influence production, and easy to maintenance quick.

3, the segmented cutter structure is simple, low cost of manufacture, reliable.

Description of drawings

Fig. 1 is Facad structure figure of the present utility model

Fig. 2 is a construction profile of the present utility model

The specific embodiment

With reference to Fig. 1, a kind of segmented numerical control bending cutter is made up of segmentation patrix 1, segmentation counterdie 2, base 3, the locating piece 4 of different specification size, and wherein counterdie 2 is fixed on the base 3, and locating piece 4 is installed in two of base 3; Base, locating piece are used for fixing the segmentation counterdie, and anti-sliding stop causes part processing precision inaccurate.Patrix 1 is installed on the bender knife rest 5.

Consider the resilience of metal material, and the shape of bending component, the segmentation upper die and lower die all adopt the modularization segmental structure.

The counterdie 2 of segmentation cutter is a foundation with thickness δ=2.5mm, 2mm, 1.5mm, 1.2mm, 1mm, the 0.8mm of manufactured parts material, and its corresponding groove width is respectively 6,8,10,14,12,16,20, unit: mm.

The material of segmentation tool selection: 42CrMo through Overheating Treatment: ZHB269-280, increases substantially the serviceability of cutter, and improvement has also been arranged service life, improves the size qualification rate of bending component.

The modularization segmented mode is adopted in the segmentation of bender segmented cutter, and its size sees Table 1, table 2:

The fragment size of the big bender segmentation cutter of table 1

	1	2	3	4	5	6	7	8	9	10
	1	2	3	4	5	6	7	8	9	10	Patrix fragment size L (mm)	25	30	40	45	50	100	105	495	595	795
Counterdie fragment size L (mm)	25	30	40	45	50	100	105	495	595	795	Patrix fragment size L (mm)	25	30	40	45	50	100	105	495	595	795

The fragment size of the little bender segmentation of table 2 cutter

	1	2	3	4	5	6	7	8	9
	1	2	3	4	5	6	7	8	9	Patrix fragment size L (mm)	15	20	45	50	95	100	195	295	495
Counterdie fragment size L (mm)	15	20	45	50	95	100	195	295	495	Patrix fragment size L (mm)	15	20	45	50	95	100	195	295	495

。

Claims

1, a kind of segmented bender cutter, form by patrix (1), counterdie (2), base (3), locating piece (4), wherein patrix (1) is installed on the bender knife rest (5), and counterdie (2) is fixed on the base (3), and locating piece (4) is installed in the both sides of base (3); It is characterized in that: described upper die and lower die adopt the modularization segmental structure.

2, big according to claim 1 bender segmented cutter, it is characterized in that: the modulus fragment size of described upper and lower mould is: 25,30,40,45,50,100,105,495,595,795, unit: mm.

3, according to claim 1 little bender segmented cutter, it is characterized in that: the modulus fragment size of described upper and lower mould is: 15,20,45,50,95,100,195,295,495, unit: mm.