CN87201447U

CN87201447U - Hetermorphous thin metallic tube die cutter

Info

Publication number: CN87201447U
Application number: CN 87201447
Authority: CN
Inventors: 倪继恕; 倪海珍; 唐国富
Original assignee: 倪继恕
Priority date: 1987-03-31
Filing date: 1987-03-31
Publication date: 1988-09-14

Abstract

The utility model discloses an abnormity thin wall metallic tube die cutter. The utility model adopts the theory that the stamping component force of the tool bit is less than the yield stress of the metallic material, and the shearing force of the tool bit is greater than the intensity of shear of the metallic material. The utility model designs a set of purpose-made plunger tips and jigs on the ordinary punching machine for realizing cutting and baiting with small deformation, no burr, no metal dust and in particular to no grating noise. The utility model has the advantages of less investment and high efficiency. The baiting of the utility model is 0.5-1 times as the baiting of the saw blade and 2-4 times as the baiting of the milling. The utility model is suitable for baiting process of the hollow steel window factory, the steeliness furniture factory and the radiator factory.

Description

Hetermorphous thin metallic tube die cutter

The utility model relates to the blanking device of special-shaped thin wall metal tube, particularly relates to the device of die-cut blanking.

At present, the blanking of special-shaped thin wall metal tube both domestic and external is all with sawing machine, milling machine or grinding wheel cutting.The material limit of sawing wherein or grinding wheel cutting is uneven, burr is many, not only brings many difficulties to flat welding process, also brings a large amount of polishing work to cleaning process.The thorn ear noise that sends during cutting that particularly serious is and the dust pollution of metal have very big threat to the blanking workers'health.Though and it is little to mill the blanking noise, efficient is too low, and metal consumption is many, investment is big, is unfavorable for reducing cost.

The purpose of this utility model is to develop a kind of novel blanking device that is applicable to the special-shaped thin wall metal tube for improving above-mentioned situation.

Fig. 1 is an overall construction drawing of the present utility model, and Fig. 2, Fig. 3 are respectively the A-A cross section of die-cut cutter 1 shown in Figure 1 and the angle excursion of B-B longitudinal section.

Design principle of the present utility model is to utilize different cutter head angles, makes punching press component be slightly smaller than the yield strength of material, makes again shearing force greater than the shear strength of material, thereby obtains the blanking effect of little, the no burr of distortion, no metallic dust.

According to above-mentioned principle, design of the present utility model comprises drift and two combining structures of anchor clamps.Drift wherein partly is made up of jumper bar 9, die-cut cutter 1, check lock lever 2, and die-cut cutter can arbitrarily be dismantled, and changes the type and the size of die-cut cutter as required; Anchor clamps by differently take turns 3, active chuck 4, spring 5, fixed chuck 7 and base plate 8 form.The size of active chuck and fixed chuck and geometry should adapt with size that is cut special pipe and geometry.

Die-cut cutter in the utility model can divide double-pole head and hilted broadsword first two.The double-pole head can cut two special pipes simultaneously, and the hilted broadsword head can only cut one.Double-pole head cross section left and right sides angle is respectively 5 °～90 °, 90 °～175 °, and 185 °～270 °, 270 °～355 °, (see figure 2); The left and right sides, longitudinal section angle is respectively 5 °～85 °, 95 °～175 °.The angle of (see figure 3) hilted broadsword head is half of double-pole head respective angles.

The utility model is to finish by following program to the die-cut of special-shaped thin wall metal tube: the jumper bar on the drift 9 is installed on the jumper bar of common punch press, anchor clamps is installed on the workbench of punch press.The special-shaped thin wall pipe 6 that then will need to cut places between fixed chuck 7 and the active chuck 4.When drift fell with the jumper bar on the punch press, check lock lever on the drift 2 was by the effect of guide wheel 3, pushed active chuck 4 to special pipe and with its clamping.Meanwhile, the die-cut cutter on the drift cuts off special pipe.When drift rose, active chuck 4 withdrawed to both sides under the effect of spring 5, and special pipe can releasedly be convenient to take out.

Embodiment: according to above-mentioned theory and design scheme, the inventor at 40 tons common punch press device a kind of die cutter of hilted broadsword head. The cross section angle of its punching cutter is 45 °～50 °, and the longitudinal section angle is 59 °, and punched metal tube is the thick Z-shaped thin metallic tubd steel window section of 1.2～1.5mm. Metal tube after die-cut except the top maximum distortion of pipe is 0.3～3mm, does not affect the butt welding quality, and other project all meets design requirement. Die-cut efficient improves 2-4 doubly than milling machine blanking.

Major advantage of the present utility model is:

1, die-cut little, the no burr of metal tube distortion, no metallic dust particularly do not have ear-piercing pathogenic noise. Changed fully that prior art efficient is low, benefit is little and the situation of serious threat workers ' health.

2, investment is little, efficient is high, is 0.5～1 times of saw blade blanking, is 2-4 times of milling machine blanking. For example: 80,000 M²Hollow steel window factory, need 400～500 of saw blades every year, approximately amount to RMB 6,000～7.5 thousand yuan, make about 5～6,000 yuan of a cover die cutter, only change later on cutter head, whenever being only needs about 1,000 yuan. Thereby economic benefit and social benefit but significantly improve.

The utility model is applicable to the factories such as hollow steel window factory, steel furniture factory, light-wall pipe radiator. Be to improve working conditions, strengthen labour protection is eliminated environmental pollution, increases work efficiency the desirable utensil that reduces cost.

Claims

1, a kind of die cutter of cutting the special-shaped thin wall metal tube partly is made up of drift and two assemblies of anchor clamps, it is characterized in that:

(1), the drift assembly is made up of jumper bar 9, die-cut cutter 1 and check lock lever 2, die-cut cutter 1 wherein is positioned at the lower end of jumper bar 9, check lock lever 2 is positioned at the both sides of die-cut cutter 1, and in parallel;

(2) the anchor clamps assembly is made up of guide wheel 3, active chuck 4, spring 5, fixed chuck 7 and chassis 8, fixed chuck 7 wherein is positioned at the center above the chassis 8, active chuck 4 is positioned at the both sides of fixed chuck 7, guide wheel 3 is positioned at the outside of active chuck 4, and with the drift assembly on check lock lever in side contacts, spring 5 be positioned at the both sides of fixed chuck 7 and active chuck below.

2, die cutter according to claim 1, it is characterized in that said die-cut cutter divide double-pole head and hilted broadsword first two, wherein the cross section left and right sides angle of double-pole head is respectively 5 °～90 °, 90 °～175 °, 85 °～270 °, 270 °～355 °, the left and right sides, longitudinal section angle is respectively 5 °～85 °, 95 °～175 °; The angle of hilted broadsword head is half of double-pole head respective angles.