CN203437757U

CN203437757U - Combined cutting knife

Info

Publication number: CN203437757U
Application number: CN201320430313.1U
Authority: CN
Inventors: 胡瑞祥; 张乐峰; 潘昌
Original assignee: Faurecia Qingdao Exhaust Systems Co Ltd
Current assignee: Faurecia Qingdao Exhaust Systems Co Ltd
Priority date: 2013-07-19
Filing date: 2013-07-19
Publication date: 2014-02-19
Anticipated expiration: 2023-07-19

Abstract

The utility model discloses a combined cutting knife. The combined cutting knife comprises a blade I and a blade II which act alternatively, wherein the blade I is provided with sawteeth for scratching a pipe piece; one end of the blade II is a cutting end for piercing from the scratched part of the pipe piece and cutting off the pipe piece; the cutting end is in a shape of a sharp end of a peach heart; and the blade I is vertically arranged and the blade II is horizontally arranged. The combined cutting knife provided by the utility model has the advantages that the two blades are combined together, and by coordinative matching of the two blades, the pipe piece is cut off, so that the processing accuracy is increased, the production cost is reduced, the cutting-off time is shortened, the decibel of the noise in pipe cutting is reduced and the generated amount of iron scraps in pipe cutting is reduced.

Description

A kind of Combined knife

Technical field

The utility model belongs to machine tooling cutter field, is specifically related to a kind of pipe cutting machine double-pole Combined knife, and it is mainly applicable to the hot junction pipe fitting of automobile exhaust pipe and the cut-out of cold junction pipe fitting processing.

Background technology

At present, in the processing industry of automobile exhaust pipe fitting Pipe Cutting, main Pipe Cutting mode is to use circular saw bit to cut.During cutting, circular saw bit slowly rises, and on it, sawtooth is by a little separated sheet iron pin in flakes of pipe fitting, and pipe fitting cuts off the most at last.Then circular saw bit is slowly fallen again, homing.

Use circular saw bit pipe cutting machine when cutting off pipe fitting, the shortcoming existing is: 1. machining accuracy is low: because pipe cutting machine saw blade is fixed with gap, so saw blade deflects when saw blade cutting is risen, therefore cut off the bad control of pipe fitting length accuracy, be controlled at ± 0.5mm of general precision, has a strong impact on product quality; 2. section tilts serious: because of the deviation of fixture fixed position and saw blade in uphill process by pipe jack-up, therefore the pipe fitting section cutting out tilts, perpendicularity is poor, affects the welding quality of subsequent product; 3. saw life is low, and Pipe Cutting cost is high: every the every cutting pipes 600-800 of saw blade part, just need reconditioning again, and on average cut off a pipe fitting and need 0.36 yuan; The Pipe Cutting time long, working (machining) efficiency is low: use saw blade cutting, average each Pipe Cutting time 26S, the time is oversize can not meet Production requirement; 5. Pipe Cutting noise is large, and smear metal be difficult for to be processed: during saw blade cutting, maximum noise can reach 82 decibels, has a strong impact on healthyly, and iron filings splash everywhere, bad collection and processing.

Utility model content

In order to overcome the above problem existing when existing circular saw bit cuts automobile exhaust pipe fitting, the invention provides a kind of Combined knife, during this Combined knife cutting automobile exhaust pipe fitting, can improve machining accuracy, reduction production cost; The present invention simultaneously also provides a kind of Pipe Cutting method of this Combined knife.

The technical solution that the utility model adopts is:

, comprising: blade one and the blade two of alternating movement, blade one, for for scratching the broaching tool of pipe fitting, is provided with sawtooth on it, and one end of blade two is for to scratch from pipe fitting the cut end of thrusting and cut off pipe fitting; The setting vertical with blade two of described blade one, and blade one carries over direction of extension motion separately respectively with blade two; Described blade one vertically arranges, and described blade two is horizontally disposed with; Described blade one is fixed on holder one, and blade two is fixed on holder two.

Preferably, described cut end comprises point of a knife, in the both sides, rear portion of point of a knife, is provided with curved blade.

Preferably, described cut end is the pointed shape of the peach heart.

Useful technique effect of the present utility model is:

The utility model provides a kind of Combined knife, and it gets up two blade unit, by the two cooperation, coordinates, pipe fitting is cut off, improved machining accuracy, reduced production cost, shorten break time, reduced Pipe Cutting noise decibel, and the generation of iron filings while having reduced Pipe Cutting.

Accompanying drawing explanation

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

Fig. 1 is structural representation sketch of the present utility model, and concrete structure and the position relationship of vertical blades and horizontal-blade is mainly shown;

Fig. 2-Fig. 6 is process chart of the present utility model; Wherein Fig. 2 illustrates the SBR of cutting pipes; Fig. 3 illustrates the state of vertical cutting knife cutting pipes; Fig. 4 illustrates vertical cutting knife and has cut the also state of homing; Fig. 5 illustrates the state of horizontal cutting knife cutting pipes; Fig. 6 illustrates horizontal cutting knife and has cut the also state of homing.

In figure: the vertical cutting knife of 1-, the horizontal cutting knife of 2-, 3-vertical blades, the vertical holder of 4-, 5-sawtooth, 6-pipe fitting, 7-horizontal-blade, the horizontal holder of 8-, 9-cut end, 901-point of a knife, 902-curved blade.

The specific embodiment

By reference to the accompanying drawings, a kind of Combined knife, comprises vertical cutting knife 1 and horizontal cutting knife 2, vertical cutting knife 1 and horizontal cutting knife 2 alternating movements.Vertical cutting knife 1 comprises vertical blades 3 and vertical holder 4, and vertical blades 3 makes to be bolted together with vertical holder 4.Vertical blades 3 is strip broaching tool, in the bottom, left side of vertical blades 3, is provided with sawtooth 5, and the effect of vertical blades 3 is in the vertical direction pipe fitting 6 to be sawed out to a groove, for the cutting of horizontal cutting knife 2 below reduces resistance, prevents the interior notch distortion of pipe fitting 6.Horizontal cutting knife 2 comprises horizontal-blade 7 and horizontal holder 8, and the same bolt that uses of horizontal-blade 7 and horizontal holder 8 is fixed.The left end of horizontal-blade 7 is cut end 9, and cut end 9 comprises point of a knife 901, and the width that is provided with 902 cutter hubs of curved blade 902, two curved blades in the both sides, rear portion of point of a knife 901 broadens gradually.The shape approximation of cut end 9 is in the pointed shape of the peach heart.The effect of horizontal-blade 7 is to scratch after pipe fitting in vertical blades 3, and the cut end 9 of horizontal-blade 7 is thrust pipe fitting and pipe fitting is cut off through scratching groove.During work, vertical blades 3 vertically moves back and forth, and horizontal-blade 7 along continuous straight runs move back and forth.

As shown in Fig. 2-6, the Pipe Cutting method of combinations thereof cutting knife, roughly carry out according to the following steps:

A adopts clamping device that pipe fitting is fixed, and vertical cutting knife 1 and horizontal cutting knife 2 are original position state in SBR;

The vertical cutting knife 1 of b moves down, and with the vertical blades 3 of sawtooth 5, pipe fitting 6 is marked to a groove, produces iron filings, and horizontal cutting knife 2 is motionless in position;

The vertical cutting knife 1 of c rises and returns original position, and horizontal cutting knife 2 is moved to the left, and the cut end 8 of horizontal-blade 7 is thrust and cut off pipe fitting 6 from groove;

The horizontal cutting knife 2 of d is return original position state to the right, cuts off pipe fitting technical process and completes.

Above-mentioned vertical cutting knife 1 can be connected with transmission mechanism respectively with horizontal cutting knife 2, by transmission mechanism, drives up and down or left and right moves back and forth, and transmission mechanism can carry out centralized Control by PLC.

One side of above-mentioned horizontal-blade 7 can be provided with lastics shoulder, and after horizontal-blade 7 cuts off pipe fitting, lastics shoulder can be released waste material simultaneously.

The part of not addressing in aforesaid way is taked or is used for reference prior art and can realize.

It should be noted that, under the instruction of this description, any equivalents that those skilled in the art have done, or obvious variant, all should be within protection domain of the present utility model.

Claims

1. a Combined knife, is characterized in that comprising: blade one and the blade two of alternating movement, and blade one, for for scratching the broaching tool of pipe fitting, is provided with sawtooth on it, and one end of blade two is for to scratch from pipe fitting the cut end of thrusting and cut off pipe fitting; The setting vertical with blade two of described blade one, and blade one carries over direction of extension motion separately respectively with blade two; Described blade one vertically arranges, and described blade two is horizontally disposed with; Described blade one is fixed on holder one, and blade two is fixed on holder two.

2. a kind of Combined knife according to claim 1, is characterized in that: described cut end comprises point of a knife, in the both sides, rear portion of point of a knife, is provided with curved blade.

3. a kind of Combined knife according to claim 2, is characterized in that: described cut end is the pointed shape of the peach heart.