High-strength steel rolling part cutting-off device with cutting-off tool capable of being used in reversing mode

Abstract

The utility model discloses a high-strength steel rolling piece cutting-off device with a cutting-off tool capable of being used in a reversing mode. The high-strength steel rolling piece cutting-off device comprises a static tool part and a movable tool part. The movable knife part is composed of a cut-off knife, a knife handle, a guide assembly and a driving assembly, the cut-off knife is rhombic, a notch matched with the cut-off knife is formed in the knife handle, the cut-off knife is embedded into the notch of the knife handle, and a cutting edge of the cut-off knife extends out of the knife handle; the guiding assembly is installed on the rack, the cutter handle is in sliding fit with the guiding assembly, and the driving assembly is connected with one end of the cutter handle. And the static cutter part is mounted on the rack. The tool changing device has the characteristics of long service life, low cost and high tool changing speed.

Description

Technical Field

[0001] This utility model relates to the field of metal cutting technology, specifically to a high-strength steel roller pressing cutting device with a reversible cutting blade. Background Technology

[0002] The automotive manufacturing industry is currently highly competitive, and modern automakers have increasingly stringent requirements for production cost control. Simultaneously, the composition of automotive materials is constantly evolving, with high-strength steel roll-formed parts increasingly used in automotive component design and application, such as door sill beams, A-pillars, and B-pillars. However, the cutting of high-strength steel roll-formed parts is affected by the material's high strength and hardness, as well as limitations imposed by the product's cross-section and shape. Traditional cutting blades have a short lifespan when cutting high-strength steel products, with edge wear and breakage occurring after approximately 400 pieces. Continuing to use a blade after the cutting edge is damaged easily leads to tearing and burrs in the cut parts, making them unsuitable for continued use. The short lifespan of cutting blades for high-strength steel products increases the frequency of blade replacements, raising the cost of the cutting process. The cost of a coated cutting blade ranges from 2000 to 5000 yuan, which is ultimately factored into the unit cost; of course, there is also a need to reduce the cost of cutting blades when cutting ordinary materials. Furthermore, traditional cutting blades and handles are installed with a tight fit and require adhesive bonding, and the disassembly and assembly process requires grinding and hammering, resulting in long blade replacement times. Utility Model Content

[0003] This invention aims to overcome the deficiencies of existing technologies and provide a high-strength steel roller pressing cutting device with a reversible cutting blade, thereby solving the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A high-strength steel roll forming cutting device with a reversible cutting blade includes a stationary blade section and a moving blade section. The moving blade section consists of a cutting blade, a handle, a guide assembly, and a drive assembly. The cutting blade is rhomboid in shape, and the handle has a notch that matches the cutting blade. The cutting blade is embedded in the notch of the handle, and its cutting edge protrudes from the handle. The guide assembly is mounted on a frame, and the handle and the guide assembly are slidably fitted together. The drive assembly is connected to one end of the handle. The stationary blade section is mounted on a frame.

[0006] The above-mentioned high-strength steel roller pressing cutting device with reversible cutting blade includes a first cutting edge and a second cutting edge. The first cutting edge and the second cutting edge are triangular and symmetrically arranged. The included angle θ between the two cutting edges of the first cutting edge is 60 degrees.

[0007] The above-mentioned high-strength steel roll forming cutting device with reversible cutting blade has a stationary blade section consisting of a feed-side stationary blade group, a discharge-side stationary blade group, an upper blade holder, and a lower blade holder. The feed-side stationary blade group consists of a first upper stationary blade and a first lower stationary blade, and the discharge-side stationary blade group consists of a second upper stationary blade and a second lower stationary blade. The gap between the feed-side stationary blade group and the discharge-side stationary blade group is matched with the thickness of the blade holder.

[0008] The first and second upper stationary tools are mounted on the upper tool post, and the first and second lower stationary tools are mounted on the lower tool post; the upper and lower tool posts are mounted on the machine frame.

[0009] The above-mentioned high-strength steel roller pressing cutting device with reversible cutting blade has rounded corners at the intersection of the two cutting edges of the first cutting edge, and the second cutting edge has the same structure as the first cutting edge.

[0010] The above-mentioned high-strength steel roller pressing cutting device with reversible cutting blade has an angle α between 82 degrees and 85 degrees between the two end faces of the notch on the head of the blade handle and the direction of blade handle movement.

[0011] The above-mentioned high-strength steel roller pressing cutting device with reversible cutting blade has a guiding assembly consisting of an upper guide body and a lower guide body; the upper guide body and the lower guide body are provided with guide grooves, and the blade holder is provided with a slider that matches the guide grooves.

[0012] The aforementioned high-strength steel roller pressing cutting device with reversible cutting blade has a hydraulic cylinder as its driving component. Beneficial effects

[0013] Compared with the prior art, this utility model has the following advantages:

[0014] First, the cutting blade of the moving part of the cutting device is embedded in the notch of the handle, which is a movable connection. The first and second cutting edges are symmetrically arranged on the diamond-shaped cutting blade. They can be switched 180 degrees within the notch of the handle. When one cutting edge is damaged, the cutting blade can be rotated 180 degrees and reinstalled into the notch of the handle, thus doubling the life of the cutting blade.

[0015] Secondly, the cutting blade and the handle are embedded. The degree of freedom of the cutting blade during operation is limited by the guide gap formed by the infeed side stationary blade group and the discharge side stationary blade group of the stationary blade section and the notch on the handle. When replacing the cutting blade, it can be directly taken out or installed from the notch on the handle, which simplifies the replacement process and greatly reduces the cutting blade replacement time.

[0016] Third, the cutting blade is generally made of coated powder high-speed steel wire, which greatly reduces the material used in making the cutting blade of this utility model compared with the traditional cutting blade, thus reducing the material cost of the cutting blade; at the same time, the processing cost and processing time of the cutting blade wire cutting are also reduced, which has high economic efficiency. Attached Figure Description

[0017] The present invention will now be described in further detail with reference to the accompanying drawings.

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the cutting blade structure of this utility model;

[0020] Figure 3 This is a partial structural diagram of the moving blade part of this utility model;

[0021] Figure 4 It is a traditional knife handle and cutting knife;

[0022] The labels in the diagram represent:

[0023] 1. Cutting blade, 2. Tool holder, 3. Upper guide body, 4. Lower guide body, 5. First upper stationary blade, 6. First lower stationary blade, 7. Second upper stationary blade, 8. Second lower stationary blade, 9. Upper tool holder, 10. Lower tool holder, 11. Product part, 12. Hydraulic cylinder, 1-1. First cutting edge, 1-2. Second cutting edge. Detailed Implementation

[0024] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0025] like Figure 1-3 As shown, this utility model includes a stationary blade section and a moving blade section; the moving blade section consists of a cutting blade 1, a handle 2, a guide assembly, and a drive assembly. The cutting blade 1 is rhomboid in shape, and the handle 2 has a notch that matches the cutting blade 1. The cutting blade 1 is embedded in the notch of the handle 2, and its cutting edge protrudes from the handle. The guide assembly is mounted on the frame, and the handle 2 and the guide assembly are connected by a sliding pair, forming a sliding fit between them. The drive assembly is connected to one end of the handle 2. The stationary blade section is mounted on the frame.

[0026] like Figure 1 As shown by the arrow, the direction of movement of the tool holder 2 when cutting the product part is the direction of movement. The notch of the tool holder 2 is part of a rhombus, as shown... Figure 1 , 3 As shown, this ensures that the cutting edge of the cutting blade 1 extends beyond the shank to punch the product part 11. The notch is larger than half of the rhombus, as shown... Figure 3 As shown, this is to prevent the cutting blade 1 from dislodging from the handle 2 when it is retracted after cutting. The thickness of the handle 2 is the same as the thickness of the cutting blade 1. The frame is fixed to the ground.

[0027] The cutting blade 1 can be designed as follows: The cutting blade 1 includes a first cutting edge 1-1 and a second cutting edge 1-2. The first cutting edge 1-1 and the second cutting edge 1-2 are triangular and symmetrically arranged. The included angle θ between the two cutting edges of the first cutting edge 1-1 is between 55 and 65 degrees, preferably 60 degrees. If the θ value is too large, the resistance will be large when the cutting blade 1 initially cuts into the product part 11; if the θ value is too small, it will be detrimental to the stability of the cutting blade 1. Figure 2 As shown, the first cutting edge 1-1 has two cutting edges, and the included angle between the two cutting edges is θ. The first cutting edge 1-1 and the second cutting edge 1-2 are symmetrically arranged along the rhomboid central axis M of the cutting blade 1.

[0028] In the cutting device, the cutting blade 1 of the moving blade part is embedded in the notch of the handle 2, which is a movable connection. The first cutting edge 1-1 and the second cutting edge 1-2 are symmetrically arranged on the rhomboid cutting blade 1. They can be switched 180 degrees within the notch of the handle 2. When one cutting edge is damaged, the cutting blade 1 can be rotated 180 degrees and reinstalled into the notch of the handle 2, thus doubling the life of the cutting blade 1.

[0029] The stationary blade section can be designed as follows: It consists of a feed-side stationary blade assembly, a discharge-side stationary blade assembly, an upper blade holder 9, and a lower blade holder 10. The feed-side stationary blade assembly consists of a first upper stationary blade 5 and a first lower stationary blade 6, while the discharge-side stationary blade assembly consists of a second upper stationary blade 7 and a second lower stationary blade 8. The first upper stationary blade 5 and the second upper stationary blade 7 are mounted on the upper blade holder 9, and the first lower stationary blade 6 and the second lower stationary blade 8 are mounted on the lower blade holder 10. The upper blade holder 9 and the lower blade holder 10 are mounted on the machine frame.

[0030] The gap between the feed-side stationary knife group and the discharge-side stationary knife group matches the thickness of the knife holder 2; the gap between the upper knife post 9 and the lower knife post 10 matches the width dimension b of the knife holder 2, thus further restricting the swing of the knife holder 2 along the width direction.

[0031] The gap between the stationary blade assembly on the feeding side and the stationary blade assembly on the discharging side of the stationary blade section restricts the oscillation of the cutting blade 1 in one direction, that is, along the thickness direction of the cutting blade 1; the rotation of the cutting blade 1 in a plane perpendicular to the thickness direction of the cutting blade 1 is restricted by the notch of the handle 2. With this design, the cutting blade 1 can be movably embedded in the notch of the handle 2, but it will not come out or loosen, whether it is the feed during cutting or the retraction after cutting.

[0032] To prevent premature damage to the triangular heads of the first cutting edge 1-1 and the second cutting edge 1-2: the intersection of the two cutting edges of the first cutting edge 1-1 is rounded, and the second cutting edge 1-2 has the same structure as the first cutting edge 1-1. The rounded radius R is generally 1 / 10 to 1 / 15 of the length of one cutting edge of the first cutting edge 1-1.

[0033] When the cutting blade 1 cuts the product part 11, such as Figure 3As shown, cutting waste is prone to clogging between the upper and lower sides of the tool holder 2 and the upper and lower tool holders 9 and 10. This can be addressed by designing the head of the tool holder 2 such that the angle α between the two end faces of the notch at the head of the tool holder 2 and the direction of movement of the tool holder 2 is between 82 and 85 degrees. For example... Figure 3 As shown, α is between 82 degrees and 85 degrees, forming a structure with a concave middle and convex upper and lower sides at the head of the handle 2. This is beneficial for pushing the cutting material forward, preventing the cutting material from being squeezed upward and downward, and facilitating the discharge of the cut waste.

[0034] The guide assembly can be designed as follows: the guide assembly consists of an upper guide body 3 and a lower guide body 4; guide grooves are provided on the upper guide body 3 and the lower guide body 4, and a slider matching the guide groove is provided on the tool holder 2. The guide groove and the slider combine to form a sliding pair; of course, the slider can also be omitted from the tool holder 2, and the upper and lower sides of the tool holder 2 can be set to a shape matching the guide groove, directly forming a sliding pair between the tool holder 2 and the guide groove of the guide assembly.

[0035] The drive assembly may be a hydraulic cylinder 12, the cylinder body of which is connected to the frame.

[0036] The cutting blade 1 and the handle 2 are embedded. The degree of freedom of the cutting blade 1 during operation is limited by the guide gap formed by the infeed side stationary blade group and the discharge side stationary blade group of the stationary blade part and the notch on the handle 2. When replacing the cutting blade 1, it can be directly taken out or installed from the notch on the handle 2, which simplifies the replacement process and greatly reduces the cutting blade replacement time.

[0037] Cutting blades are generally made of coated powder high-speed steel wire. The material used to make the cutting blade 1 of this utility model is significantly reduced compared to the traditional cutting blade, thus reducing the material cost of the cutting blade. At the same time, the processing cost and processing time of the cutting blade wire cutting are also reduced, which has high economic efficiency.

[0038] This utility model designs a reversible, reusable 4-blade high-strength steel cutting blade. After one blade is damaged, the cutting blade can be reversed and the other blade used for cutting, solving the problem of existing cutting blades having only one blade and short lifespan. The cutting blade reversing and blade changing speed is fast and easy to operate. The cutting blade structure is smaller than traditional cutting blades, significantly reducing material and processing costs. The cutting blade's lifespan is doubled; the original cutting blade's lifespan is 500-700 cycles, while this utility model's cutting blade's lifespan is 1000-1400 cycles. Cutting costs are significantly reduced. For a product with a lifespan of approximately 300,000 units, this can save over 1 million yuan in consumable costs.

Claims

1. A high-strength steel roller pressing cutting device with a reversible cutting blade, characterized in that, It includes a stationary blade section and a moving blade section; the moving blade section consists of a cutting blade (1), a handle (2), a guide assembly and a drive assembly. The cutting blade (1) is rhomboid in shape, and the handle (2) is provided with a notch that matches the cutting blade (1). The cutting blade (1) is embedded in the notch of the handle (2), and its cutting edge protrudes from the handle. The guide assembly is installed on the frame, and the handle (2) and the guide assembly are slidably fitted together. The drive assembly is connected to one end of the handle (2). The stationary blade section is installed on the frame.

2. The high-strength steel roller pressing cutting device with reversible cutting blade according to claim 1, characterized in that, The cutting blade (1) includes a first cutting edge (1-1) and a second cutting edge (1-2). The first cutting edge (1-1) and the second cutting edge (1-2) are triangular and symmetrically arranged. The included angle θ between the two cutting edges of the first cutting edge (1-1) is 60 degrees.

3. The high-strength steel roller pressing cutting device with reversible cutting blade according to claim 1, characterized in that, The stationary blade section consists of a stationary blade assembly on the feed side, a stationary blade assembly on the discharge side, an upper blade holder (9), and a lower blade holder (10); the stationary blade assembly on the feed side consists of a first upper stationary blade (5) and a first lower stationary blade (6), and the stationary blade assembly on the discharge side consists of a second upper stationary blade (7) and a second lower stationary blade (8); the gap between the stationary blade assembly on the feed side and the stationary blade assembly on the discharge side matches the thickness of the blade holder (2); The first upper stationary knife (5) and the second upper stationary knife (7) are installed on the upper tool holder (9), and the first lower stationary knife (6) and the second lower stationary knife (8) are installed on the lower tool holder (10); the upper tool holder (9) and the lower tool holder (10) are installed on the machine frame.

4. The high-strength steel roller pressing cutting device with reversible cutting blade according to claim 1, characterized in that, The two cutting edges of the first cutting edge (1-1) are rounded at the intersection. The second cutting edge (1-2) has the same structure as the first cutting edge (1-1).

5. The high-strength steel roller pressing cutting device with reversible cutting blade according to claim 1, characterized in that, The angle α between the two end faces of the notch at the head of the handle (2) and the direction of movement of the handle (2) is between 82 degrees and 85 degrees.

6. The high-strength steel roller pressing cutting device with reversible cutting blade according to claim 1, characterized in that, The guide assembly consists of an upper guide body (3) and a lower guide body (4); the upper guide body (3) and the lower guide body (4) are provided with guide grooves, and the tool holder (2) is provided with a slider that matches the guide grooves.

7. The high-strength steel roller pressing cutting device with reversible cutting blade according to claim 1, characterized in that, The drive component is a hydraulic cylinder (12).

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