CN210024333U - Rolling aluminium strip cutter - Google Patents

Abstract

The utility model relates to a strip processing cutter, concretely relates to roll extrusion aluminium strip cutter, including cutter main part and roll extrusion sword tooth, the cutter main part is cylindrical, and cutter main part axial is opened there is the mounting hole, it has the keyway to open on the mounting hole, roll extrusion sword tooth equipartition in cutter main part week side, and the length of roll extrusion sword tooth is not more than the width of cutter main part, and the contained angle α of back of the knife and knife face is 40 ~ 70, and the radius contained angle β of knife face and cutter main part is 8, and roll extrusion sword tooth includes left side roll extrusion sword tooth and right side roll extrusion sword tooth, and right side roll extrusion sword tooth quantity is more than or equal to left side roll extrusion sword tooth quantity, and the one end that cutter main part terminal surface was kept away from to left side roll extrusion sword tooth and right side roll extrusion sword tooth is equipped with circular arc chamfer.

Description

Rolling aluminium strip cutter

Technical Field

The utility model relates to a strip processing cutter, concretely relates to roll extrusion aluminium strip cutter.

Background

Because automobiles such as cars, light van-type vehicles and the like are rapidly developed in China, the requirements of automobile sealing strips are rapidly increased. The automobile sealing strip can be generally divided into a pure rubber sealing strip and a composite sealing strip, and a metal framework material is longitudinally wrapped in the composite sealing strip, namely, an embedded framework of the automobile sealing strip can play a role in strengthening, shaping and fixing. At present, the product is processed by using a continuous stamping mode, but because the width of an embedded framework of the automobile sealing strip is narrow, the gap between two side teeth needing stamping is too small, (1) when a punch is slightly worn, a large amount of burrs are generated on the product, and even the product cannot be stripped. (2) The traditional stamping process is to directly stamp out the material at the gap part, so that the utilization rate of the material is reduced. (3) The continuous stamping processing is easy to have size deviation in the feeding process, so that the size consistency is reduced; and the material can not be fed in the stamping process, a certain time interval exists between the stamping process and the feeding process, and the processing speed is low. (4) Because the existing continuous stamping die is mainly made of hard alloy materials, the material cost is high, but generally, a punch needs to be replaced when about 20 tons of strips are processed, the service life of the punch is short, and the processing cost of continuous stamping is high. (5) Because the die used for continuous stamping is easy to wear, a new punch needs to be replaced after the die is worn, and the new punch needs to be repositioned and adjusted at the moment, so that the processing efficiency is reduced. The main defects of the method are as follows: low efficiency, high cost of the die, short service life of the die and excessive generation of geometrical waste of the processed product.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a long service life, high just do not have the roll extrusion aluminium strip cutter that the waste material produced of production efficiency.

The rolling aluminum strip cutter comprises a cutter body and rolling cutter teeth, wherein the cutter body is cylindrical, a mounting hole is formed in the cutter body in the axial direction, a key groove is formed in the mounting hole, the rolling cutter teeth are evenly distributed on the periphery of the cutter body, the length of the rolling cutter teeth is smaller than the width of the cutter body, the cutting edge angle α is 40-70 degrees, the front edge oblique angle β is 5-11 degrees, the rolling cutter teeth comprise left rolling cutter teeth and right rolling cutter teeth, one ends of the left rolling cutter teeth and the right rolling cutter teeth are respectively located on the same plane with the two end faces of the cutter body, arc chamfers R1 are arranged at the ends, far away from the end faces of the cutter body, of the left rolling cutter teeth and the right rolling cutter teeth, and the arc chamfers R1 are 2.0-8.00 mm.

The utility model has the advantages that: 1. the rolling aluminum strip cutter has longer service life, can reach more than 100 kilometers, reduces the cost, has the processing speed of more than 100m/min, and has the processing efficiency far higher than that of the prior art; 2. the aluminum strip is cut into a specified size by a rolling aluminum strip cutter and then freely stretched on stretching equipment, so that the specified tooth space requirement of a product can be met, and no waste is generated; 3. because the tooth space of the rolling aluminum strip cutter is a fixed value, the tooth width of products processed in each batch is the same, and the size deviation cannot be generated; 4. the aluminum strip is fed while the aluminum strip is processed by the aluminum strip rolling cutter, so that the processing efficiency is further improved; 5. after the rolling aluminum strip cutter is installed, the continuous operation can be carried out until the rolling aluminum strip cutter is scrapped, no adjustment is needed in the production process, and the processing efficiency is ensured;

further, the cutting edge angle α is preferably 55-70 degrees, so that the surface deformation of the aluminum strip caused by the extrusion of the knife back and the aluminum strip when the aluminum strip is processed is prevented, the product quality is reduced, and the impact resistance and the wear resistance of the rolling knife teeth are improved on the premise of ensuring the service life of the cutter.

And furthermore, the top of the rolling cutter tooth is an arc surface. The arc surface (1) can prevent the cutting edge of the hob from cracking and reduce the abrasion speed; (2) the phenomenon of thread breakage of the product with hooks or lotus roots after the product is rolled and cut is prevented; (3) the generation of burrs can be reduced or even eliminated.

Furthermore, the height h of the rolling cutter tooth is 0.40 mm-0.60 mm, and the arc chamfer R1 is 2.00 mm-3.00 mm.

Furthermore, the height h of the rolling cutter tooth is 0.70 mm-1.00 mm, and the arc chamfer R1 is 4.00 mm-6.00 mm.

Furthermore, the height h of the rolling cutter tooth is more than or equal to 1.00mm, and the circular chamfer R1 is 7.00-8.00 mm. The corresponding arc chamfer R1 is selected according to the height of the rolling cutter teeth, so that the stress indentation at the end point of the cut opening of the cut aluminum strip can be reduced, and the cut aluminum strip is prevented from being broken during stretching.

Furthermore, the length of the left rolling cutter teeth is smaller than that of the right rolling cutter teeth, and the number of the left rolling cutter teeth is half of that of the right rolling cutter teeth.

Furthermore, the number of the left rolling cutter teeth is the same as that of the right rolling cutter teeth.

Still further, the surface roughness of the rolled teeth was 0.8. The surface smoothness of the rolling cutter tooth is improved, the processing precision is improved, and the tooth breakage rate can be further effectively reduced.

Drawings

FIG. 1 is a perspective view of the aluminum strip rolling tool of the present invention;

FIG. 2 is a side view of the aluminum strip rolling tool of the present invention;

FIG. 3 is a schematic view of the utility model of the aluminum strip rolling tool;

FIG. 4 is an enlarged view of a portion of FIG. 3;

FIG. 5 is a first schematic structural view of the aluminum strip rolling tool of the present invention;

FIG. 6 is a partial view of a first rolling cutter tooth of the aluminum strip rolling cutter of the present invention;

FIG. 7 is a cross-sectional view taken along line B-B of FIG. 6;

FIG. 8 is a second schematic structural view of the aluminum strip rolling tool of the present invention;

FIG. 9 shows a first rolling cutter tooth of the aluminum strip rolling cutter of the present invention is provided with an arc chamfer R1 to roll the cut aluminum strip;

FIG. 10 shows the aluminum strip after being rolled and sheared by the first rolling cutter tooth without the arc chamfer R1 in the rolling aluminum strip cutter of the present invention;

FIG. 11 is a view showing the aluminum strip after being rolled and sheared by the arc chamfer R1 arranged on the second rolling cutter tooth of the rolling aluminum strip cutter of the present invention;

fig. 12 shows the rolled and sheared aluminum strip with the five-arc chamfer R1 of the second rolling cutter tooth in the rolling aluminum strip cutter of the present invention.

In the figure, 1 is a cutter body, 2 is a rolling cutter tooth, 201 is a left rolling cutter tooth, 202 is a right rolling cutter tooth, 3 is a key groove, 4 is a mounting hole, 5 is the top of the rolling cutter tooth, 6 is a cutter back, 7 is a cutter face, 8 is an aluminum strip, 9 is a stress indentation, and 10 is an end point of a shear notch.

Detailed Description

The invention will be described in further detail with reference to the following drawings and detailed description:

a rolled aluminum strip cutter, as shown in figures 1 to 8,

the first embodiment is as follows:

the cutter body 1 is cylindrical, the rolling cutter teeth 2 are uniformly distributed on the peripheral side of the cutter body 1, the cutter body 1 is axially provided with a mounting hole 4 which is coaxial with the cutter body 1, the side wall of the mounting hole 4 is provided with a key groove 3, the rolling cutter teeth 2 comprise a left rolling cutter tooth 201 and a right rolling cutter tooth 202, the length L1 of the left rolling cutter tooth 201 and the length L2 of the right rolling cutter tooth 202 are both smaller than the width L of the cutter body 1, the left end of the left rolling cutter tooth 201 and the left end surface of the cutter body 1 are positioned on the same plane, the right end of the right rolling cutter tooth 202 and the right end surface of the cutter body 1 are positioned on the same plane, the right end of the left rolling cutter tooth 201 and the left end of the right rolling cutter tooth 202 are both provided with an arc chamfer R1, the included angle between the cutter back 6 and the cutter face 7 is α, the cutting edge angle α is 40-70 degrees, when an aluminum strip is machined, if the cutting edge angle 64 is too large, the situation that extrusion of the cutter back 6 and the aluminum strip 8 and the surface are extruded, the surface of the aluminum strip, the surface is extruded, the surface of the aluminum strip, the aluminum strip surface, the quality of the cutting edge is reduced, the cutting edge is degraded, the quality of the cutting edge is degraded, the cutting edge of the.

In order to prevent the edge of the rolling cutter teeth 2 from cracking when processing the aluminum strip, further reduce the wear rate and prolong the service life of the cutter, as shown in fig. 6, the top portions 5 of the rolling cutter teeth are designed to be circular arc surfaces. The radius of the circular arc ab is the same as the addendum circle radius R2 of the rolling aluminum strip cutter, and the arc length of the circular arc ab is 0.25mm +/-0.03 mm. The top 5 of the rolling cutter tooth is an arc surface, so that the phenomenon of wire breakage or hooking of the side surface of the embedded skeleton of the automobile sealing strip after processing can be prevented, and burrs at the cut of the embedded skeleton of the automobile sealing strip can be reduced or even avoided.

Example two:

in order to ensure that the sheared aluminum strip is not easy to break during stretching, the value of the circular arc chamfer R1 is selected according to the value of the height h of the rolling cutter tooth 2. The height h of the rolling cutter tooth 2 is 0.50mm +/-0.02 mm, and the circular arc chamfer R1 is preferably 2.00 mm. The height h of the rolling cutter tooth 2 is 0.70mm +/-0.02 mm, and the circular arc chamfer R1 is preferably 4.00 mm. The height h of the rolling cutter tooth 2 is 1.20mm +/-0.02 mm, and the circular arc chamfer R1 is preferably 7.00 mm. If the arc chamfer R1 is not provided, the sheared aluminum strip 8 is as shown in fig. 10 and 12, and after the rolling cutter tooth 2 shears the aluminum strip 8, because a stress indentation 9 is generated at an end point 10 of the sheared opening of the aluminum strip 8, the stress indentation 9 seriously damages the strength of the aluminum strip 8, and the aluminum strip 8 is torn and broken at the stress indentation 9 when being stretched. After the arc chamfer R1 is provided, the stress indentation 9 at the end point 10 of the sheared edge of the rolled and sheared aluminum strip 8 is small, as shown in fig. 9 and 11, which can reduce the damage of the rolling cutter teeth 2 to the strength of the aluminum strip 8, and further prevent the sheared aluminum strip 8 from breaking during stretching.

The other technical features are the same as those of the first embodiment.

Example three:

the length of the left rolling cutter teeth 201 is smaller than that of the right rolling cutter teeth 202, and the number of the left rolling cutter teeth 201 is half of that of the right rolling cutter teeth 202. The surface roughness of the rolling cutter tooth 2 is 0.8, the surface smoothness of the rolling cutter tooth is improved, the processing precision is improved, and the tooth breakage rate is further effectively reduced. As shown in fig. 5. The rolled and sheared aluminum strip is shown in fig. 9, and the other technical characteristics are the same as those of the embodiment.

Example four:

the number of the right rolling cutter teeth 202 is equal to that of the left rolling cutter teeth 201, the surface roughness of the rolling cutter teeth 2 is 0.8, and the tooth breakage rate can be further effectively reduced. As shown in fig. 8. The rolled and sheared aluminum strip is shown in fig. 11, and the other technical characteristics are the same as those of the embodiment.

When the rolling cutter is used, as shown in fig. 3 and 4, the two cutters form a group, the aluminum strip 8 is positioned between the two cutters, and the tops 5 of the two cutters, which are respectively provided with one corresponding rolling cutter tooth, are always slightly staggered and meshed in the rotating process, namely, the two cutters are in a material cutting state. The feeding of the aluminum strip 8 is carried out along with the rotation of the cutter, and the shearing and the feeding of the aluminum strip 8 can be completed simultaneously. The processing speed can reach more than 100-150 m/min, and the processing efficiency is far higher than that of a continuous stamping processing mode of 20-40 m/min in the prior art. The utility model provides a roll extrusion aluminium strip cutter can adopt servo motor direct drive, if under the circumstances that the drive arrangement self condition allows, the process velocity of roll extrusion aluminium strip cutter can also continue to promote.

By adopting continuous stamping processing, size deviation is easy to occur in the feeding process, so that certain deviation can exist in the tooth width of the embedded skeleton of the stamped automobile sealing strip, and the size consistency is reduced. Adopt the utility model discloses a cutter machining, roll extrusion sword tooth 2 cuts out the rule scaling-off with aluminium strip 8 in crisscross process, then stretches on tensile equipment, and tensile in-process, the fore-and-aft extension that 8 aluminium strips can be followed to the incision produces the interval, forms the tooth spacing that the embedded skeleton of car sealing strip needs. Because the tooth space of the rolling cutter teeth 2 on the rolling aluminum strip cutter is a fixed value and the tensile force applied to the stretching equipment is a fixed value, the tooth widths of the embedded frameworks of the automobile sealing strips processed in each batch are the same, and the size deviation cannot be generated; and no waste is generated, and the material utilization rate is up to 100 percent.

The utility model provides a roll extrusion aluminium strip cutter installation back need not any adjustment maintenance at the production process, can continuous operation to 2 wearing and tearing of roll extrusion sword tooth, can process about 100 kilometers in the aluminium strip, converts into about the aluminium strip weight more than 50 tons. Because continuous stamping adopts the punching press to take off the material mode, the drift appears slight wearing and tearing and can lead to the product to produce the condition of a large amount of burrs or even unable material of taking off, so the drift often need repair the mould after dismantling, and after repairing the mould, the drift still need follow new installation adjustment. Generally, about 20 tons of aluminum strips are processed, a punch cannot be used after die repairing, a new punch die needs to be replaced, and the service life of the punch die is too short. Therefore, the utility model provides a roll extrusion aluminium strip cutter's life is far higher than continuous stamping process mould. And the worn rolling aluminum strip cutter can be continuously used after being maintained, and the advantages are obvious.

The above description is only an example of the present invention, and the common general knowledge of the known specific structures and characteristics of the embodiments is not described herein. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent.

Claims (9)

1. The rolling aluminum strip cutter is characterized by comprising a cutter body and rolling cutter teeth, wherein the cutter body is cylindrical, a mounting hole is formed in the cutter body in the axial direction, a key groove is formed in the mounting hole, the rolling cutter teeth are uniformly distributed on the periphery of the cutter body, the length of each rolling cutter tooth is smaller than the width of the cutter body, the cutting edge angle α is 40-70 degrees, the front edge oblique angle β is 5-11 degrees, each rolling cutter tooth comprises a left rolling cutter tooth and a right rolling cutter tooth, one end of each left rolling cutter tooth and one end of each right rolling cutter tooth are respectively located on the same plane with the two end faces of the cutter body, an arc chamfer R1 is arranged at one end, far away from the end face of the cutter body, of each left rolling cutter tooth and one end of each right rolling cutter tooth, and the arc chamfer R1 is 2.0-.

2. The rolled aluminum strip cutter as claimed in claim 1, wherein said cutting edge angle α is preferably 55 ° to 70 °.

3. A rolled aluminium strip tool according to claim 1 or 2, wherein: the top of the rolling cutter tooth is an arc surface.

4. The rolled aluminum strip cutter of claim 1, wherein: the height h of the rolling cutter tooth is 0.40 mm-0.60 mm, and the arc chamfer R1 is 2.00 mm-3.00 mm.

5. The rolled aluminum strip cutter of claim 1, wherein: the height h of the rolling cutter tooth is 0.70 mm-1.00 mm, and the arc chamfer R1 is 4.00 mm-6.00 mm.

6. The rolled aluminum strip cutter of claim 1, wherein: the height h of the rolling cutter tooth is more than or equal to 1.00mm, and the circular chamfer R1 is 7.00-8.00 mm.

7. A rolled aluminum strip tool as claimed in claim 3 wherein: the length of the left rolling cutter teeth is smaller than that of the right rolling cutter teeth, and the number of the left rolling cutter teeth is half of that of the right rolling cutter teeth.

8. A rolled aluminum strip tool as claimed in claim 3 wherein: the number of the left rolling cutter teeth is the same as that of the right rolling cutter teeth.

9. A rolled aluminium strip tool according to claim 5 or 6, wherein: the surface roughness of the rolling cutter teeth is 0.8.

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