Cutting tool for cutting high-strength tubular beam

Abstract

The utility model discloses a cut-off tool for cutting a high-strength tubular beam. The cut-off tool comprises a movable cutter assembly and a static cutter assembly. The movable cutter assembly is composed of a movable cutter body and a first driving assembly, the movable cutter body is of a two-section structure, the front section is of a triangular structure, the rear section is of a rectangular structure, cutting edges are arranged on the two bevel edges of the triangular structure of the front section of the movable cutter body, and the movable cutter body is driven by the first driving assembly; the cutting edge is of a sectional structure and is composed of a fixed cutting edge body and a movable cutting edge body, T-shaped notches are formed in the two bevel edges of the triangular structure of the front section of the movable cutter body, movable bodies matched with the T-shaped notches are arranged in the T-shaped notches, and movable cutting edge bodies are arranged on the movable bodies. The utility model has the characteristics that the cutting edge can be quickly replaced, and the cutting efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of metal cutting, in particular to a cutting tool for cutting high-strength pipe beams. Background Art

[0002] Competition in the automotive manufacturing industry is fierce, with modern vehicles placing increasing demands on production cost control. Simultaneously, the composition of automotive manufacturing materials is constantly changing, with high-strength steel increasingly being used in the design and application of automotive parts. However, the cutting of formed parts made from high-strength steel is limited by the material's high strength and hardness, as well as the product's profile and shape. This presents the following challenges: First, traditional sawing suffers from low cutting efficiency and precision, and the blade is prone to wear and tear, requiring high blade strength. Second, existing cutting tools have a short lifespan when cutting high-strength steel products, with blade wear and breakdown occurring after approximately 200 pieces. This easily damaged cutting edge can lead to tearing and burring during product cutting. Third, the workpiece clamping and fixation during the cutting process are unreliable, causing extrusion and deformation of the pipe beam. Utility Model Content

[0003] The utility model is used to overcome the defects of the prior art and provide a cutting tool for cutting high-strength pipe beams to solve the problems mentioned in the background art.

[0004] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0005] A cutting tool for cutting high-strength pipe beams, comprising a movable knife assembly and a stationary knife assembly; the movable knife assembly consists of a movable knife body and a first drive assembly, the movable knife body having a two-section structure, the front section having a triangular structure, and the rear section having a rectangular structure, cutting edges being provided on the two oblique sides of the triangular structure of the front section of the movable knife body, and the movable knife body being driven by the first drive assembly; the cutting edge having a segmented structure, consisting of a fixed cutting edge and a movable cutting edge, T-shaped notches being provided on the two oblique sides of the triangular structure of the front section of the movable knife body, a movable body matching the T-shaped notch being provided in the T-shaped notch, and a movable cutting edge being provided on the movable body.

[0006] The above-mentioned cutting tool for cutting high-strength pipe beams, the static knife assembly consists of a first static knife group and a second static knife group installed on the tool holder, the first static knife group consists of an upper static knife body and a lower static knife body, the upper static knife body and the lower static knife body are matched with the shape of the pipe beam respectively, the structure of the second static knife group is the same as that of the first static knife group, the distance between the second static knife group and the first static knife group matches the thickness of the movable knife body, and the movable knife body can be movably pressed in between the second static knife group and the first static knife group to form a punching cut on the pipe beam.

[0007] The above-mentioned cutting tool for cutting high-strength pipe beams has an acute angle θ between the two sets of cutting edges, and the value of θ is between 75-80 degrees.

[0008] The above-mentioned cutting tool for cutting high-strength pipe beams is provided with an upper slide and a lower fixed seat on the tool holder, and the upper static knife body and the lower static knife body are respectively installed on the upper slide and the lower fixed seat; a vertical slide rail is provided on the tool holder, and a slider matching the slide rail is provided on the upper slide, and a second drive assembly is connected above the upper slide.

[0009] In the above-mentioned cutting tool for cutting high-strength pipe beams, the first drive assembly and the second drive assembly are hydraulic cylinders.

[0010] The above-mentioned cutting tool for cutting high-strength pipe beams is provided with a material collecting box on one side of the tool holder to collect the sheared pipe beam residue. Beneficial effects

[0011] Compared with the existing technology, the present invention has the following advantages: Compared with the existing technology, the present invention has the following advantages: First, the cutting edge on the movable blade adopts a segmented structure, which is composed of a fixed cutting edge and a movable cutting edge. According to the particularity of cutting pipe beams, the blade tip breaks on one side wall of the pipe beam in the initial cutting section, and breaks on the opposite side wall in the final cutting section. The main cutting sections between the initial and final cutting sections are completed by the cutting edge at the non-blade tip. The utilization rate of the cutting edge at the initial and final sections is much lower than the utilization rate of the cutting edge at the non-blade tip in the main cutting section. Therefore, the cutting edge at the non-blade tip is set as a movable cutting edge. After the movable cutting edge is worn, it can be quickly replaced by replacing the movable body, which not only improves the replacement efficiency but also saves expenses. Secondly, the static knife assembly used consists of a first static knife group and a second static knife group, the spacing between which matches the thickness of the moving knife body. The moving knife is pressed in from between the two static knife groups to punch the pipe beam. During the cutting process, the two static knife groups effectively clamp the pipe beam, thereby avoiding extrusion and deformation of the pipe beam; at the same time, the first static knife group and the second static knife group are both composed of an upper static knife body and a lower static knife body, and the two static knife bodies form a clamp on the pipe beam, which is beneficial to the stability at the moment of punching, so as to reduce cutting edge burrs and tearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The present invention will be further described below in conjunction with the accompanying drawings.

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 It is a schematic diagram of the local structure of the utility model;

[0015] Figure 3 This is a schematic diagram of the structure of the movable cutter body of the utility model;

[0016] Figure 4 This is another partial structural diagram of the utility model;

[0017] The reference numerals in the figure represent:

[0018] 1. Moving knife assembly, 1-1. Moving knife body, 1-2. Cutting edge, 1-2-1. Moving body, 1-3. First drive assembly, 2. Stationary knife assembly, 2-1. First stationary knife group, 2-2. Second stationary knife group, 2-1-1. Upper stationary knife body, 2-1-2. Lower stationary knife body, 3. Material collecting box, 4. Knife holder, 4-1. Upper slide seat, 4-2. Lower fixed seat, 5. Second drive assembly, 6. Pipe beam, 7. Frame. DETAILED DESCRIPTION

[0019] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0020] like Figure 1-4 As shown, the present invention includes a movable blade assembly 1 and a stationary blade assembly 2. The movable blade assembly 1 is composed of a movable blade body 1-1 and a first drive assembly 1-3. The movable blade body 1-1 has a two-section structure, with a triangular front section and a rectangular rear section. Cutting edges 1-2 are provided on the two oblique sides of the triangular structure of the front section of the movable blade body 1-1, that is, cutting edges 1-2 are provided on both sides of the triangular blade tip. There are two sets of cutting edges 1-2. The movable blade body 1-1 is driven by a first drive assembly 1-3. The first drive assembly 1-3 is mounted on a frame 7.

[0021] The cutting edge 1-2 on the movable blade body 1-1 can be designed as follows: the cutting edge 1-2 is a segmented structure, consisting of a fixed cutting edge and a movable cutting edge. T-shaped notches are provided on the two oblique sides of the triangular structure of the front section of the movable blade body 1-1, and a movable body 1-2-1 matching it is provided in the T-shaped notch, and a movable cutting edge is provided on the movable body 1-2-1; the movable cutting edge matches the fixed cutting edge and combines to form the cutting edge 1-2. The movable body 1-2-1 can be bonded with metal glue, that is, a bonding layer is provided between the movable body 1-2-1 and the movable blade body 1-1, and the glue can be Wika 415. Since the movable body 1-2-1 is installed and embedded in the T-shaped notch, its force is mainly borne by the T-shaped notch. The bonding with Wika 415 glue tested during production can not only meet the strength requirements, but also can be flattened and embedded by a vise during installation, and is also convenient for extrusion and disassembly during replacement and disassembly, which is convenient for disassembly and assembly; the two can also be connected by screws. Since the movable blade body 1-1 has a certain thickness, that is, the movable body 1-2-1 has a certain thickness, matching screw holes can be provided on the movable body and the movable blade body, and then the movable body is connected to the movable blade body by screws. The cost of this method is relatively high, because the cost of providing screw holes on a high-strength blade body is relatively high.

[0022] The angle between the two groups of cutting edges 1-2 is an acute angle θ, and the value of θ is between 75-80 degrees.

[0023] The stationary knife assembly can be designed as follows: the stationary knife assembly 2 is composed of a first stationary knife group 2-1 and a second stationary knife group 2-2 installed on the knife holder 4, the knife holder 4 is installed on the frame 7, the first stationary knife group 2-1 is composed of an upper stationary knife body 2-1-1 and a lower stationary knife body 2-1-2, the upper stationary knife body 2-1-1 and the lower stationary knife body 2-1-2 are respectively matched with the outer shape of the pipe beam 6, and the blades thereof are matched with the outer shape of the pipe beam 6 and form a clamp on the pipe beam 6, the structure of the second stationary knife group 2-2 is the same as that of the first stationary knife group 2-1, the distance between the second stationary knife group 2-2 and the first stationary knife group 2-1 is matched with the thickness of the movable knife body 1-1, and the movable knife body 1-1 can be movably pressed in between the second stationary knife group 2-2 and the first stationary knife group 2-1 to form a punching cut on the pipe beam 6.

[0024] The fixed cutting edge and the movable blade body 1-1 are an integrated structure, and the movable cutting edge is the cutting edge on the movable body 1-2-1 installed on the movable blade body 1-1; due to the particularity of cutting pipe beams, the cutting edge breaks on one side wall of the pipe beam in the initial cutting section, and breaks on the opposite side wall in the final cutting section. The main cutting section between the initial cutting section and the final cutting section is completed by the cutting edge at the non-cutting edge. The utilization rate of the cutting edge at the cutting edge in the initial cutting section and the final cutting section is much lower than the utilization rate of the cutting edge at the non-cutting edge in the main cutting section. Therefore, the cutting edge at the non-cutting edge is set as a movable cutting edge. After the movable cutting edge is worn, it can be quickly replaced by replacing the movable body 1-2-1, which can not only improve the replacement efficiency but also save expenses.

[0025] The stationary blade assembly is fixed using the following design: the blade holder 4 is provided with an upper slide 4-1 and a lower fixed seat 4-2. The upper stationary blade body 2-1-1 and the lower stationary blade body 2-1-2 are mounted on the upper slide 4-1 and the lower fixed seat 4-2, respectively. The blade holder 4 is provided with vertical slide rails, and the upper slide 4-1 is provided with a slider that matches the slide rails. A second drive assembly 5 is connected above the upper slide 4-1. Driven by the second drive assembly 5, the upper slide 4-1 can slide up and down along the blade holder 4.

[0026] The drive assembly can be designed as follows: the first drive assembly 1-3 and the second drive assembly 5 can be hydraulic cylinders or gas-liquid booster cylinders. A material collecting box 3 is provided on one side of the tool holder 4 to collect the sheared pipe beam residue.

Claims

1. A cutting tool for cutting high-strength pipe beams, characterized in that: The invention comprises a movable knife assembly (1) and a stationary knife assembly (2); the movable knife assembly (1) is composed of a movable knife body (1-1) and a first drive assembly (1-3); the movable knife body (1-1) is a two-section structure, the front section is a triangular structure, and the rear section is a rectangular structure; cutting edges (1-2) are provided on the two oblique sides of the triangular structure of the front section of the movable knife body (1-1); the movable knife body (1-1) is driven by the first drive assembly (1-3); the cutting edge (1-2) is a segmented structure, consisting of a fixed cutting edge and a movable cutting edge; T-shaped notches are provided on the two oblique sides of the triangular structure of the front section of the movable knife body (1-1); a movable body (1-2-1) matching the T-shaped notch is provided in the T-shaped notch; and the movable body (1-2-1) is provided with a movable cutting edge.

2. The cutting tool for cutting high-strength pipe beams according to claim 1, characterized in that: The static knife assembly (2) is composed of a first static knife group (2-1) and a second static knife group (2-2) installed on a knife holder (4); the first static knife group (2-1) is composed of an upper static knife body (2-1-1) and a lower static knife body (2-1-2); the upper static knife body (2-1-1) and the lower static knife body (2-1-2) are respectively matched with the outer shape of the pipe beam (6); the structure of the second static knife group (2-2) is the same as that of the first static knife group (2-1); the distance between the second static knife group (2-2) and the first static knife group (2-1) is matched with the thickness of the movable knife body (1-1); the movable knife body (1-1) is movably pressed between the second static knife group (2-2) and the first static knife group (2-1) to form a punching cut on the pipe beam (6).

3. The cutting tool for cutting high-strength pipe beams according to claim 1, characterized in that: The angle between the two groups of cutting edges (1-2) is an acute angle θ, and the value of θ is between 75-80 degrees.

4. The cutting tool for cutting high-strength pipe beams according to claim 1, characterized in that: An upper slide seat (4-1) and a lower fixed seat (4-2) are provided on the tool holder (4); an upper static knife body (2-1-1) and a lower static knife body (2-1-2) are respectively mounted on the upper slide seat (4-1) and the lower fixed seat (4-2); a vertical slide rail is provided on the tool holder (4); a slider matching the slide rail is provided on the upper slide seat (4-1); and a second drive assembly (5) is connected above the upper slide seat (4-1).

5. The cutting tool for cutting high-strength pipe beams according to claim 4, characterized in that: The first drive assembly (1-3) and the second drive assembly (5) are hydraulic cylinders.

6. The cutting tool for cutting high-strength pipe beams according to claim 1, characterized in that: A material collecting box (3) is provided on one side of the tool holder (4) to collect the sheared pipe beam residue.

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