Cutting device capable of effectively prolonging service life of cutting edge of cutter

Abstract

The utility model discloses a cutting device capable of effectively prolonging the service life of a cutting edge of a cutter, and belongs to the technical field of rolling online follow-up cutting equipment. The device comprises a support, a driving oil cylinder, a mold, a movable cutter, a guide block and a static cutter, the mold is fixed to the support, the static cutter is horizontally arranged on the mold, and the guide block is arranged on the left side of the static cutter; a cylinder barrel of the driving oil cylinder is fixed to the support and arranged on the left side of the guide block, the movable cutter is fixed to a cylinder rod of the driving oil cylinder, the cylinder rod drives the movable cutter to obliquely penetrate through the guide block and the static cutter, an included angle alpha is formed between the advancing direction of the movable cutter and the center line of the static cutter, and alpha ranges from 3 degrees to 12 degrees. The cutting direction of the moving cutter is inclined, and the working length of the moving cutter is increased in the cutting process. Point contact of the cutting edge and the anti-collision beam is changed into line contact, the contact area of the cutting edge and a product piece is increased, the connecting pipe is connected to the static cutter, cooling liquid can be sprayed to the moving cutter through the liquid leakage holes, and therefore the service life of the moving cutter and the static cutter is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of roll - press on - line follow - up cutting equipment, and relates to a cutting device that can effectively extend the service life of the cutting edge of a cutting tool, which is applicable to the side cutting of products with "mouth", "day" or "B" - shaped cross - sections in roll - line production. Background Technique

[0002] With the rapid development of automotive technology, lightweight and the overall mechanical performance of the vehicle are important indicators for the optimal design of the vehicle. Under this background, the cross - section of the anti - collision beam is optimized from "B" - shaped to "day" - shaped and "mu" - shaped. Since the material strength of the product part is at the 1500 Mpa level. First, when using the traditional side - cutting method, the temperature of the cutting edge of the cutting tool is too high during cutting, resulting in a gradual decrease in the hardness of the cutting edge after heating. Second, the cutting edge of the cutting tool is always in a point - contact state with the product part, and the edge wear is serious, resulting in a reduction in the service life of the cutting tool. After the rapid wear of the cutting edge, it will cause tearing and deformation at the end of the closed - cavity product during cutting, resulting in product quality defects. The emergence of the above - mentioned new cross - sections has made the traditional cutting method unable to meet the requirements of cutting quality and service life. It is necessary to develop a new type of side - cutting mechanism that can not only meet the cutting quality but also extend the service life of the cutting tool. Summary of the Invention

[0003] The utility model provides a cutting device that can effectively extend the service life of the cutting edge of a cutting tool, which can extend the length of the cutting edge and delay the wear of the moving tool.

[0004] The utility model solves the above - mentioned technical problems through the following technical solutions.

[0005] A cutting device that can effectively extend the service life of the cutting edge of a cutting tool includes a bracket, a driving oil cylinder, a die, a moving tool, a guiding block, and a stationary tool. The die is fixed on the bracket, the stationary tool is horizontally arranged on the die, and the guiding block is arranged on the left side of the stationary tool; the cylinder barrel of the driving oil cylinder is fixed on the bracket and is arranged on the left side of the guiding block, the moving tool is fixed to the piston rod of the driving oil cylinder, and the piston rod drives the moving tool to obliquely pass through the guiding block and the stationary tool.

[0006] For the above - mentioned cutting device that can effectively extend the service life of the cutting edge of a cutting tool, the traveling direction of the moving tool forms an angle α with the mid - line of the stationary tool, and α is 3° - 12°.

[0007] For the above - mentioned cutting device that can effectively extend the service life of the cutting edge of a cutting tool, the die includes an upper die and a lower die. There are two guiding blocks, which are respectively arranged between the upper die and the lower die. The upper die and the lower die are provided with upper - and - lower corresponding guiding grooves. The guiding grooves match the traveling direction and dimensions of the moving tool, and the moving tool passes through the guiding grooves to reach the stationary tool; the mid - line of the guiding grooves forms an angle α with the mid - line of the stationary tool.

[0008] The above-mentioned cutting device which can effectively extend the life of the cutting blade is also provided with a cooling mechanism, which includes a leakage hole, a connecting pipe and a liquid supply box. The stationary knife is provided with a leakage hole, and the leakage hole and the liquid supply box are connected by a connecting pipe. The coolant in the cooling box can be sprayed onto the moving knife through the leakage hole.

[0009] The above-mentioned cutting device which can effectively prolong the life of the cutting blade edge, wherein α=7°.

[0010] Compared with the prior art, the cutting direction of the movable knife of the utility model is inclined, and the working length of the movable knife during the cutting process is increased. The contact between the cutting edge and the anti-collision beam changes from point contact to line contact, which increases the contact area between the cutting edge and the product. The connecting pipe is connected to the stationary knife, and the coolant can be sprayed onto the movable knife through the leakage hole, thereby increasing the service life of the movable knife and the stationary knife. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the utility model;

[0012] Figure 2 It is a partial structural schematic diagram of the utility model;

[0013] Figure 3 It is a schematic diagram of the process holes of the anti-collision beam;

[0014] Figure 4 It is a schematic diagram of the length of the original cutting edge of the utility model;

[0015] Figure 5 It is a schematic diagram of the length of the cutting edge of the utility model;

[0016] The marks in the attached drawings indicate: 1. driving cylinder, 2. upper die, 3. lower die, 4. moving knife, 5. guide block, 6. leakage hole, 7. stationary knife, 8. anti-collision beam, 9. bracket, 10. process hole. DETAILED DESCRIPTION

[0017] The following is a further detailed description of the specific implementation of the utility model in conjunction with the accompanying drawings and embodiments. The following embodiments are used to illustrate the utility model.

[0018] like Figures 1 to 5The utility model includes a bracket 9, a driving cylinder 1, a mold, a moving knife 4, a guide block 5 and a static knife 7. The mold is fixed on the bracket 9, the static knife 7 is horizontally arranged on the mold, and the guide block 5 is arranged on the left side of the static knife 7; the cylinder barrel of the driving cylinder 1 is fixed on the bracket 9 and arranged on the left side of the guide block 5, the moving knife 4 is fixed to the cylinder rod of the driving cylinder 1, and the cylinder rod drives the moving knife 4 to obliquely pass through the guide block 5 and the static knife 7, and the moving direction of the moving knife 4 forms an angle α with the center line of the static knife 7, and α is 3°-12°. Through the above arrangement, when the moving knife 4 cuts the anti-collision beam 8, since the wall thickness of the anti-collision beam 8 remains unchanged, the cutting angle of the moving knife 4 can be changed, and the length of the cutting edge of the moving knife 4 cutting the anti-collision beam 8 can be extended, and the original point contact is changed to line contact, which improves the utilization rate of the moving knife 4 and extends the service life.

[0019] Furthermore, in order to ensure that the movable blade 4 can cut the anti-collision beam 8 at a predetermined angle, the mold includes an upper mold 2 and a lower mold 3, and two guide blocks 5 are provided, and the guide blocks 5 are respectively arranged between the upper mold 2 and the lower mold 3. The upper mold 2 and the lower mold 3 are provided with upper and lower corresponding guide grooves, and the guide grooves match the direction and size of the movable blade 4. The movable blade 4 passes through the guide grooves to reach the stationary blade 7; the center line of the guide groove forms an angle α with the center line of the stationary blade 7. In this way, the movable blade 4 can be ensured to move obliquely toward the stationary blade 7 and cut the anti-collision beam 8, and the cutting edge of the movable blade 4 is extended.

[0020] In order to ensure cooling during the cutting process, a cooling mechanism is also provided, which includes a leakage hole 6, a connecting pipe and a liquid supply box. The static knife 7 is provided with a leakage hole 6, and the leakage hole 6 and the liquid supply box are connected through a connecting pipe. The coolant in the cooling box can be sprayed onto the moving knife 4 through the leakage hole 6. The coolant is connected during the cutting process to alleviate the softening of the cutting edge caused by the heating during cutting, and at the same time, the service life of the moving and static knives 7 is improved. Preferably, when α=7°, the wear of the cutting edge is reduced and the service life of the cutting knife is improved.

[0021] Furthermore, before the anti-collision beam 8 is roll-formed, a pre-punched cutting process hole 10 is formed on the anti-collision beam 8 as the cutting point of the product cutting knife, thereby avoiding deformation and tearing of the cutting point when cutting the anti-collision beam 8.

[0022] like Figure 4 As shown, the original blade length is A, such as Figure 5 As shown, the working trajectory of the movable knife 44 is inclined at a certain angle, and the cutting edge lengths are B and C. The cutting edge lengths B and C are much greater than A. The cutting edge working length increases during the cutting process, increasing the contact area between the cutting edge and the product.

[0023] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A cutting device that can effectively extend the life of a cutting blade, characterized in that: The invention comprises a bracket (9), a driving cylinder (1), a mold, a movable knife (4), a guide block (5) and a stationary knife (7), wherein the mold is fixed on the bracket (9), the stationary knife (7) is horizontally arranged on the mold, and the guide block (5) is arranged on the left side of the stationary knife (7); the cylinder barrel of the driving cylinder (1) is fixed on the bracket (9) and arranged on the left side of the guide block (5), the movable knife (4) is fixed to the cylinder rod of the driving cylinder (1), and the cylinder rod drives the movable knife (4) to obliquely pass through the guide block (5) and the stationary knife (7).

2. The cutting device capable of effectively extending the life of the cutting blade according to claim 1, characterized in that: The moving direction of the moving knife (4) forms an angle α with the midline of the stationary knife (7), and α is 3°-12°.

3. The cutting device capable of effectively extending the life of the cutting blade according to claim 2, characterized in that: The mold comprises an upper mold (2) and a lower mold (3), two guide blocks (5) are provided, and the guide blocks (5) are respectively arranged between the upper mold (2) and the lower mold (3). The upper mold (2) and the lower mold (3) are provided with upper and lower corresponding guide grooves, and the guide grooves match the direction and size of the movable knife (4). The movable knife (4) passes through the guide grooves to reach the stationary knife (7); the center line of the guide groove forms an angle α with the center line of the stationary knife (7).

4. The cutting device capable of effectively extending the life of the cutting blade according to claim 3, characterized in that: A cooling mechanism is also provided, the cooling mechanism comprising a liquid leakage hole (6), a connecting pipe and a liquid supply box. The stationary knife (7) is provided with a liquid leakage hole (6). The liquid leakage hole (6) and the liquid supply box are connected via a connecting pipe. Coolant in the cooling box can be sprayed onto the movable knife (4) via the liquid leakage hole (6).

5. The cutting device capable of effectively extending the life of the cutting blade according to claim 4, characterized in that: The α=7°.

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