A fixed knife holder capable of preventing the knife body from deviating and an aluminum wire cutting knife

Abstract

The utility model discloses a kind of fixed knife rest capable of preventing deviation of blade body, comprising: installation knife rest, its inside is provided with expansion joint, the both sides of the expansion joint are provided with clamping plate, the inside of two the clamping plate is all provided with installation slot, the upper end of two the installation slot is provided with limit chamfer, the inside of two the clamping plate is all provided with clamping threaded hole, the utility model is provided with clamping plate and installation slot and the like component, cutting stress can be dispersed to overall structure along expansion joint, avoid local stress concentration;Two sides clamping plate is accurately guided blade body through installation slot and limit chamfer, reduces positioning deviation;Clamping bolt is rotated into threaded hole, and even compacting force is formed to blade body, further limit its axial movement.The overall design is through stress dispersion, accurate guidance and rigid clamping triple mechanism, significantly improve the positioning stability of blade body, prolong tool life, guarantee processing precision.

Description

Technical Field

[0001] This utility model relates to the field of fixed blade holder technology, specifically a fixed blade holder and aluminum wire cutter that can prevent the blade body from shifting. Background Technology

[0002] In the precision machining of metal wires such as aluminum and copper wire, high-speed rotary cutters are the core actuators. The stability and clamping accuracy of their fixed tool holders directly determine the quality of the cutting surface, dimensional accuracy, and the service life of the tool itself. Traditional fixed tool holders generally adopt a screw-based lateral clamping structure, which has certain shortcomings in actual high-speed, high-frequency cutting applications.

[0003] In existing devices, the existing tool holders mostly use a tool groove on the tool holder body and one or a few screws to clamp the blade directly or indirectly from the side. This "point contact" or "line contact" clamping method is difficult to form a uniform and stable surface clamping force along the entire clamping length of the blade, and the blade is prone to displacement. Therefore, we need to propose a fixed tool holder and aluminum wire cutter that can prevent the blade from shifting. Utility Model Content

[0004] The purpose of this invention is to provide a fixed blade holder and aluminum wire cutter that can prevent the blade body from shifting. By providing components such as a clamping plate and a mounting groove, the cutter body can be limited to prevent it from shifting, thereby solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A fixed tool holder to prevent the tool body from shifting includes: The tool holder is equipped with an expansion joint inside. Clamping plates are provided on both sides of the expansion joint. The two clamping plates have mounting grooves inside. The upper end of the two mounting grooves is provided with a limit chamfer. The two clamping plates have clamping threaded holes inside. The two clamping threaded holes are provided with clamping bolts.

[0006] Preferably, the outer side of the clamping bolt contacts a washer.

[0007] Preferably, a buffer ring is in contact with the side wall of the gasket, and the buffer ring is in contact with the clamping plate and the clamping bolt respectively.

[0008] Preferably, the lower ends of the mounting tool holder and the clamping plate are provided with weight-reducing grooves, and the weight-reducing grooves are connected to the expansion joints.

[0009] Preferably, the upper end of the mounting tool holder has two symmetrically distributed inclined slots.

[0010] Preferably, the tool holder has two symmetrically distributed first mounting holes inside, and the two first mounting holes are respectively connected to two inclined slots.

[0011] Preferably, the tool holder has two symmetrically distributed second mounting holes inside.

[0012] An aluminum wire cutter includes a fixed blade holder to prevent the blade from shifting, and a cutter body. The cutter body is slidably connected inside the two mounting slots. The cutter body is slidably connected to a limiting chamfer. A beveled end is provided at the end of the cutter body away from the mounting blade holder.

[0013] Compared with the prior art, the beneficial effects of this utility model are: This invention, by incorporating clamping plates and mounting grooves, disperses cutting stress along the expansion joint to the overall structure, preventing localized stress concentration. The clamping plates on both sides, via the mounting grooves and chamfered limits, precisely guide the tool body, reducing positioning deviations. After the clamping bolts are screwed into the threaded holes, they exert a uniform clamping force on the tool body, further limiting its axial movement. The overall design, through a triple mechanism of stress dispersion, precise guidance, and rigid clamping, significantly improves the tool body's positioning stability, extends tool life, and ensures machining accuracy. Attached Figure Description

[0014] Figure 1 This is one of the structural schematic diagrams of this utility model; Figure 2 This is the second structural schematic diagram of the present invention; Figure 3 This is a schematic diagram of the unfolded structure of a partial component of this utility model; Figure 4 This is a structural diagram of the mounting groove and limiting chamfer of this utility model.

[0015] In the diagram: 1. Mounting blade holder; 2. Expansion joint; 3. Clamping plate; 4. Mounting groove; 41. Limiting chamfer; 5. Clamping threaded hole; 6. Clamping bolt; 7. Washer; 8. Buffer ring; 9. Weight reduction groove; 10. Angled groove; 11. First mounting hole; 12. Second mounting hole; 13. Cutting blade body; 14. Angled cutting end. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1-4 This utility model provides a technical solution: A fixed tool holder to prevent the tool body from shifting includes: The tool holder 1 is installed with an expansion joint 2 inside. Clamping plates 3 are provided on both sides of the expansion joint 2. The two clamping plates 3 are provided with mounting grooves 4 inside. The upper end of the two mounting grooves 4 is provided with a limit chamfer 41. The two clamping plates 3 are provided with clamping threaded holes 5 inside. The two clamping threaded holes 5 are provided with clamping bolts 6 inside.

[0018] For example, the tool holder 1 is made of high-strength aluminum alloy or alloy steel. These two materials have high strength and good toughness, which can withstand the stress during the cutting process and ensure the stability of the tool holder. Its main structure is a rectangular frame with an expansion joint 2 along the length of the interior. The width of the expansion joint 2 is adjusted according to the thickness of the blade. It is processed by wire cutting or laser cutting. The clamping plate 3 is connected to the tool holder body by welding or integral molding. Its inner surface (the surface in contact with the blade) is polished to Ra0.8 or less to reduce frictional heat during the cutting process. Each clamping plate 3 has a mounting groove 4 inside to facilitate the insertion of the blade. The upper end of the mounting groove 4 is provided with a limiting chamfer 41. The chamfer radius matches the blade cutting edge radius, which can guide the blade to be accurately positioned and avoid the blade edge from directly colliding with hard materials, thus preventing chipping. Two clamping threaded holes 5 are arranged coaxially and a clamping bolt 6 is inserted to ensure that it will not loosen during long-term use.

[0019] The outer side of the clamping bolt 6 is in contact with a washer 7, and the side wall of the washer 7 is in contact with a buffer ring 8. The buffer ring 8 is in contact with the clamping plate 3 and the clamping bolt 6 respectively.

[0020] For example, a washer 7 and a buffer ring 8 are sequentially fitted on the outside of the clamping bolt 6. The washer 7 is made of 304 stainless steel or copper alloy, and its outer diameter is larger than the surface of the clamping plate 3 to distribute the bolt pressure and prevent local crushing. The buffer ring 8 is made of polyurethane or silicone, which has a certain elastic deformation capacity and can withstand long-term compression without deformation. The inner hole of the buffer ring 8 is clearance-fitted with the clamping bolt 6, and its two end faces are respectively in contact with the clamping plate 3 and the washer 7. When the clamping bolt 6 is tightened, the buffer ring 8 fills the tiny gap through elastic deformation, absorbs processing vibration, and at the same time prevents electrochemical corrosion caused by direct metal contact (especially in humid environments).

[0021] The lower ends of both the mounting tool holder 1 and the clamping plate 3 are provided with weight reduction grooves 9, which are connected to the expansion joint 2.

[0022] For example, the weight reduction groove 9 removes excess material while ensuring structural strength. The connection between the weight reduction groove 9 and the expansion joint 2 forms a stress release channel. When the cutting force causes the clamping plate 3 to deform, the stress can be dispersed to the entire tool holder structure through the weight reduction groove 9, avoiding local stress concentration.

[0023] The upper end of the tool holder 1 is provided with two symmetrically distributed inclined slots 10. The inside of the tool holder 1 is provided with two symmetrically distributed first mounting holes 11, which are respectively connected to the two inclined slots 10. The inside of the tool holder 1 is provided with two symmetrically distributed second mounting holes 12.

[0024] For example, the inclined groove 10 disperses the cutting force through inclined contact, the first mounting hole 11 and the second mounting hole 12 are fixed holes, and the angles of the first mounting hole 11 and the second mounting hole 12 are perpendicular to each other, which facilitates the installation of the tool holder 1 at different angles and ensures the dynamic balance of the tool holder when rotating at high speed.

[0025] An aluminum wire cutter includes a fixed blade holder to prevent the blade from shifting, and a cutter body 13. The cutter body 13 is slidably connected inside two mounting slots 4. The cutter body 13 is slidably connected to a limiting chamfer 41. A beveled end 14 is provided at the end of the cutter body 13 away from the mounting blade holder 1.

[0026] For example, the cutter body 13 is made of cemented carbide or high-speed steel with a hardness of HRC62-65 to meet the high-frequency cutting requirements of aluminum wire. Its thickness and length are customized according to the equipment specifications. The beveled end 14 is formed by precision grinding, and the surface roughness is controlled below Ra0.4 to ensure the smoothness of the cutting surface. The clearance between the cutter body 13 and the mounting groove 4 is controlled within the range of 0.01-0.03mm to ensure smooth sliding and prevent deviation caused by excessive clearance during cutting. The sliding contact surface between the limiting chamfer 41 and the cutter body 13 is treated with hard chrome plating, and the hardness is increased to HV900 or above, which significantly improves wear resistance. In practical applications, this design enables the cutting accuracy of the aluminum wire cutter to reach ±0.02mm and extends the service life to 2-3 times that of traditional tool holders.

[0027] Working principle: First, the main body of the tool holder 1 is processed and installed using high-strength aluminum alloy or alloy steel. Expansion joints 2 are made by wire cutting or laser cutting to ensure that the width matches the thickness of the blade. The clamping plate 3 is connected to the main body of the tool holder by an integral molding process. The inner surface is polished to Ra0.8 or less to reduce cutting friction heat. Installation grooves 4 are made in the two clamping plates 3 respectively, and limiting chamfers 41 are processed. The chamfer radius is consistent with the radius of the cutting edge to avoid collision and chipping. Then, clamping threaded holes 5 are drilled coaxially on the clamping plate 3, clamping bolts 6 are inserted, and 304 stainless steel washers 7 and polyurethane buffer rings 8 are fitted in sequence. The inner hole of the buffer ring 8 is clearance-fitted with the bolt, and the two end faces are respectively attached to the clamping plate 3 and the washers 7 to form an elastic buffer structure. The cutter body 13 is slid into the mounting groove 4 and precisely positioned using the limiting chamfer 41. The clearance between the cutter body 13 and the mounting groove 4 is controlled at 0.01-0.03mm to ensure smooth sliding without deviation. The beveled end 14 is precision ground to a surface roughness of Ra0.4 or less to improve the quality of the cutting surface. The clamping bolt 6 is tightened, and the pressure is dispersed by the shim 7. The buffer ring 8 elastically deforms to fill the gap, absorbs processing vibration, and prevents electrochemical corrosion. Fix the tool holder 1 to the spindle of the equipment through the first mounting hole 11 or the second mounting hole 12 (arranged vertically at an angle), start the equipment to rotate at low speed, check the dynamic balance of the tool holder, and ensure that the vibration value is ≤0.05mm and the cutting accuracy is ±0.02mm when rotating at high speed by adjusting the bolt preload or the counterweight.

[0028] The equipment is used for aluminum wire cutting. The buffer ring 8 continuously absorbs vibration, extending the service life of the tool holder to 2-3 times that of traditional designs. Regularly check the compression of the buffer ring 8 and the wear of the cutting tool, and replace worn parts in a timely manner to ensure long-term stability.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fixed tool holder to prevent the tool body from shifting, characterized in that, include: The tool holder (1) is equipped with an expansion joint (2) inside. Both sides of the expansion joint (2) are equipped with clamping plates (3). The two clamping plates (3) are equipped with mounting grooves (4). The upper ends of the two mounting grooves (4) are equipped with limit chamfers (41). The two clamping plates (3) are equipped with clamping threaded holes (5). The two clamping threaded holes (5) are equipped with clamping bolts (6).

2. A fixed tool holder for preventing blade displacement according to claim 1, characterized in that: The clamping bolt (6) has a washer (7) in contact with its outer side.

3. A fixed tool holder for preventing blade displacement according to claim 2, characterized in that: The side wall of the gasket (7) is in contact with a buffer ring (8), which is in contact with the clamping plate (3) and the clamping bolt (6) respectively.

4. A fixed tool holder for preventing blade displacement according to claim 1, characterized in that: The lower ends of the mounting tool holder (1) and the clamping plate (3) are provided with weight reduction grooves (9), which are connected to the expansion joint (2).

5. A fixed tool holder for preventing blade displacement according to claim 4, characterized in that: The upper end of the mounting tool holder (1) is provided with two symmetrically distributed inclined slots (10).

6. A fixed tool holder for preventing blade displacement according to claim 5, characterized in that: The tool holder (1) has two symmetrically distributed first mounting holes (11) inside, and the two first mounting holes (11) are respectively connected to two inclined slots (10).

7. A fixed tool holder for preventing blade displacement according to claim 6, characterized in that: The tool holder (1) has two symmetrically distributed second mounting holes (12) inside.

8. An aluminum wire cutter, characterized in that: The fixed blade holder, which prevents the blade from shifting, includes any one of claims 1-7, and also includes a cutter body (13). The cutter body (13) is slidably connected inside the two mounting slots (4). The cutter body (13) is slidably connected to the limiting chamfer (41). The cutter body (13) is provided with a beveled end (14) at the end away from the mounting blade holder (1).

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