Small Sharp（Vibration） Blade

Vibration blades are cutting tools that utilize high – frequency mechanical vibration to drive the cutting edge, enabling precise cutting of flexible and thin materials while possessing the characteristics of no burnt edges and low damage.

Products Provided by Kedel

We offer the following types of blades. Whether you need standard sizes or customized sizes, we can precisely meet your unique requirements.

Straight-Edge Vibration Blade

Bent-Tip Vibration Blade

Round-Edge Vibration Blade

Multi-Ridge Wave-Edge Vibration Blade

Sharp-Tip Vibration Blade

Trapezoidal-Edge Vibration Blade

Need custom blades? We design and make them

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Application Scenarios

Vibration blade empower diverse industries — from automotive interiors and fabric cutting to advertising materials, packaging, and home decor — by enabling efficient, precise, and customizable cutting solutions.

Automotive Interior Parts Cutting

Fabric Cutting

Advertising Materials Processing

Packaging Products Manufacturing

Home Decor Materials Production

Uncover Your Needs with Us!

If you have customization needs for tobacco industry blades, please feel free to contact us! Please provide information such as the brand and model of the slitting equipment, the installation dimensions of the tool holder, the performance requirements of the blade, and the actual working environment. Our engineers will customize an exclusive solution for you and communicate with you within 72 hours after receiving the information to help you improve the efficiency and quality of tobacco processing!

What is a Vibrating Blade?

A vibrating blade is a professional cutting tool that works through high – frequency reciprocating vibration. It can cut various materials such as fabrics, leathers and rubbers. By means of rapid vibration, it reduces friction and enables smooth cutting. There are types like electric (brushless motors suitable for single – layer cutting and servo motors suitable for multi – layer, thick and hard materials) and pneumatic (requiring a stable air source). Structurally, it consists of a power source, a connecting rod, a blade cylinder, a blade clamp and a blade made of hard materials. It has advantages of high efficiency, precision, wide adaptability, low heat impact and high automation degree. It is widely used in industries such as automotive interiors, textile and clothing, advertising and packaging, composite material processing, and home soft furnishings. It is a key tool in automated cutting production lines, ensuring cutting precision, edge quality and production efficiency.

What are the common tool types used in Small Sharp Blade slitting?

Different slitting knives cater to the characteristics of various materials (e.g., films, papers, metal foils) and the requirements for slitting precision and speed, enabling stable and efficient material division while ensuring processing quality and production efficiency across industries.

Straight-Edge Vibration Blade

Structural Features: Features a straight-line cutting edge with uniform blade thickness, compatible with standard collets of vibration cutting systems.
Functional Advantages: Delivers straight, neat cutting edges for efficient linear cutting, minimizing material waste during large-panel processing.
Typical Applications: Linear cutting of fabrics (e.g., curtain fabrics), leather sheets, and straight-edge trimming of advertising KT boards.

Bent-Tip Vibration Blade

Structural Features: Boasts a bent-tip design (typically 15°–30° angle), where the blade tip curves toward the cutting direction, adaptable to vibration cutter spindles.
Functional Advantages: Enables smooth cutting of curved contours and corner details, reducing material pull during turns for precise complex-shape cutting.
Typical Applications: Cutting curved automotive interior parts (e.g., door panel upholstery) and arc-edge processing of furniture trims.

Round-Edge Vibration Blade

Structural Features: Has a circular-arc cutting edge in a rolling-blade structure, with slight rotation during vibration-driven cutting.
Functional Advantages: Ensures friction-reduced, snag-free cutting for flexible materials (e.g., knitted fabrics), with even wear extending blade life.
Typical Applications: Cutting knitted fabrics, plush materials, and soft-padded furniture components (e.g., sofa cushions).

Multi-Ridge Wave-Edge Vibration Blade

Structural Features: Features a wave-shaped edge with 3–10 ridges (ridge height: 0.5–2mm), operating at 200–500Hz high-frequency vibration.
Functional Advantages: Enhances chip separation, reducing cutting force by 30%–50%, and prevents delamination in multi-layer composites.
Typical Applications: Cutting multi-layer car floor mats, carbon-fiber composite fabrics, and furniture composite upholstery (e.g., fabric-foam laminates).

Sharp-Tip Vibration Blade

Structural Features: Equipped with an ultra-sharp tip (tip width ≤ 0.1mm), tapering from tip to shank, compatible with precision collets of vibration systems.
Functional Advantages: Cuts fine patterns, narrow slits (≥ 0.3mm), and small holes with high precision for intricate decorative designs.
Typical Applications: Contour cutting of embroidered garments, fine-pattern processing of advertising signs, and hollow-cutting of furniture panels.

Trapezoidal-Edge Vibration Blade

Structural Features: Has a trapezoidal edge (narrower at the tip, wider at the shank), forming a 5°–15° side angle, adaptable to vibration cutter toolholders.
Functional Advantages: Enables bevel cutting (e.g., 3D-effect edges) and improves stability to reduce blade deflection during thick-material cutting.
Typical Applications: Bevel cutting of packaging cartons (e.g., display boxes), beveled trim processing for furniture, and angled cutting of advertising standees.

What are the common working methods?

Different vibration cutting processes (e.g., high – frequency reciprocating, oscillating) enable efficient and precise cutting by matching material properties and forming requirements, ensuring the quality of final products.

High-Frequency Reciprocating Vibration Cutting

Principle: The cutting tool reciprocates axially at high frequencies (typically 1–5 kHz), generating periodic impact forces to sever materials.
Scenario: Cutting thin flexible materials like fabrics, leathers, and composite laminates (e.g., automotive interior upholstery).
Advantage: Enables rapid cutting with clean edges, minimizing material fraying or pulling due to high-frequency impacts.

Oscillating Vibration Cutting

Principle: The tool oscillates angularly (swing angle: 5°–30°) around the spindle axis during cutting.
Scenario: Contour cutting of complex curves (e.g., 3D automotive interior panels) and bevel cutting of foam/rubber materials.
Advantage: Excels at curved path adaptation, reducing material deformation during contour transitions.

What materials can be used to make cutting blades?

Different materials for vibrating blades are chosen to match hardness, wear resistance and toughness with cutting needs of fabrics, leather, rubber and composites. This balances service life, cost and cutting quality.

I. Core Blade Material Types & Characteristics

1. Tungsten Steel (Cemented Carbide)

Composition: Tungsten carbide (WC) + cobalt (Co) binder, hardness HRA 89–93 (equivalent to HRC 70–75).
Advantages:
- Exceptional wear resistance (10–20 times higher than high-speed steel), ideal for abrasive materials (rubber, leather, carbon fiber).
- High temperature resistance (red hardness up to 800–1000°C), reducing blade softening during cutting.
Applications: Automotive interiors (multi-layer leather cutting), composite processing (carbon fiber boards), hard rubber slitting.

2. High-Speed Steel (HSS)

Composition: Alloy of tungsten (W), molybdenum (Mo), chromium (Cr), vanadium (V), hardness HRC 62–67.
Advantages:
- Good toughness and impact resistance, less prone to chipping (suits frequent vibrating cutting).
- Lower cost than tungsten steel, offering high cost-effectiveness.
Applications: Textile fabrics (cotton/synthetic fibers), foam materials, advertising KT board cutting.

3. Diamond-Coated Blades

Structure: Diamond film (5–10μm thick) deposited on a cemented carbide substrate, surface hardness up to HV 8000–10000.
Advantages:
- Extremely low friction coefficient (0.05–0.1), reducing material adhesion (e.g., thermoplastic plastics).
- Outstanding wear resistance (lifespan 5–10 times longer than ordinary tungsten steel blades).
Applications: High-end leather (luxury goods), film materials (PVC, PET), precision cutting of electronic accessories.

4. Ceramics (Zirconia/Alumina)

Composition: Zirconia (ZrO₂) or alumina (Al₂O₃), hardness HV 1200–1800.
Advantages:
- Strong chemical inertness (no reaction with plastics/rubber), suitable for food/medical applications.
Applications: Medical non-woven fabrics (surgical gown materials), food-grade packaging, optical film slitting.

II. Blade Material Selection by Cutting Material

Cutting Material	Recommended Blade Material	Advantage Analysis
Flexible Materials (fabrics, leather)	High-speed steel/HSS-coated blades	Good toughness prevents fraying/stretching.
Hard Materials (rubber, PVC)	Tungsten steel/diamond-coated tungsten steel	High hardness/wear resistance reduces chipping.
Composites (carbon fiber, fiberglass)	Ultrafine-grain tungsten steel (grain ≤1μm)	Abrasion resistance minimizes fiber-induced wear.
Thermoplastic Materials (plastic films)	Diamond-coated/ceramic blades	Low friction/non-stick properties avoid heat melting.
Food/Medical Materials	Zirconia ceramic blades	Metal-free, meets hygiene standards.

III. Special Processes & Coating Technologies

1. Coating Enhancement

TiN (Titanium Nitride) Coating: HV 2000–2500 hardness, high-temperature oxidation resistance. Used on HSS blades (textile industry) for improved wear resistance.
TiAlN (Titanium Aluminum Nitride) Coating: Red hardness up to 1100°C, suitable for high-temperature composite cutting.
DLC (Diamond-Like Carbon) Coating: Friction coefficient <0.1, prevents static adsorption during film cutting.

2. Blade Structure Optimization

Serrated Edges: Tungsten steel blades with serrations enhance cutting efficiency for thick materials (e.g., multi-layer foam).
Thin-Blade Design: Ceramic blades (as thin as <0.1mm) enable precision slitting of electronic components.

IV. Core Principles for Material Selection

Balance Wear Resistance & Toughness:
- Choose tungsten steel for abrasive materials (e.g., carbon fiber).
- Opt for HSS for impact-resistant needs (e.g., thick rubber).
Temperature Sensitivity:
- Avoid metal blades for thermoplastic materials (e.g., PE film); use ceramics/diamond coatings to reduce heat generation.
Cost & Lifespan Trade-off:
- Tungsten steel/coated blades for mass production (long lifespan).
- HSS for small batches/testing (lower cost).

Summary: Blade materials are optimized via heat treatment (e.g., sintering for tungsten steel), coating technologies, and structural designs to ensure efficient cutting, longevity, and quality across diverse materials.

What parameters do we need to understand?

The significance of understanding vibration blade parameters lies in precisely matching material properties, equipment capabilities, and processing requirements to achieve efficient, stable, and high-quality cutting, thereby ensuring production efficiency and the quality of finished products.

I. Structural and Geometric Parameters

Cutting Edge Morphology

Types: Straight edge (linear cutting), round edge (prevents snagging of flexible materials), wave edge (chip breaking, reduces cutting force), sharp-tip/trapezoidal edge (precision/bevel processing).
Significance: Determines cutting edge quality (smoothness, curve adaptability) and material compatibility (e.g., leather needs round edges to avoid tearing; carbon fiber needs wave edges to prevent delamination).

Dimensional Specifications

Blade length/diameter: Affects clamping stability (overly long blades vibrate easily); edge width/angle (e.g., 26° edge angle) determines cutting depth and sharpness (acute angles for thin materials, obtuse angles for wear resistance).
Tip radius: Small radius (≤0.1mm) required for precision cutting (e.g., sharp-tip blades for narrow slits).

II. Vibration Characteristic Parameters

Vibration Frequency

Range: 1–5kHz (high-frequency reciprocation) or low-frequency oscillation (tens of Hz), must match equipment vibration system (e.g., if equipment max frequency is 3kHz, blade frequency must stay within range).
Significance: Higher frequency boosts cutting efficiency (more impacts) but demands better blade toughness (prone to fatigue fracture).

Amplitude

Range: Several microns (precision cutting) to tens of microns (thick material cutting; e.g., ultrasonic blade amplitude 10–50μm).
Significance: Larger amplitude → stronger cutting force (suits thick materials) but higher energy consumption; smaller amplitude → higher precision (suits films, leather).

Vibration Direction

Types: Axial vibration (along blade shank), radial oscillation (deflection around axis, e.g., oscillating cutting), compound vibration (multi-directional superposition).
Significance: Axial suits linear/thin materials; radial oscillation adapts to curves/3D contours (e.g., automotive interior curved surfaces).

III. Material and Performance Parameters

Material Type

Options:
- Tungsten steel (carbide): Wear-resistant, suits medium-thick materials.
- Ceramic: Ultra-hard but brittle (suits high-hardness materials).
- Coatings (diamond, TiN): Enhance wear/corrosion resistance, extend service life by 3–5 times.
Significance: Material dictates service life, cost, and application scenarios (e.g., ceramic blades chip easily on hard brittle materials, so avoid them).

Mechanical Properties

Hardness: HRC 85–90 for tungsten steel; higher hardness improves wear resistance but risks chipping (composite coatings balance this).
Thermal stability: Resistance to softening under high temperatures (from vibration heat) affects long-term service life.

IV. Compatibility Parameters

Clamping and Interface

Shank type: ER collet, custom taper shank; diameter tolerance must strictly match equipment spindle (otherwise, vibration eccentricity reduces precision and damages equipment).

Equipment Compatibility

Vibration system matching: Frequency range, power matching. Insufficient power can’t drive high-amplitude blades; frequency mismatch causes weak vibration (insufficient force) or overload (blade/equipment damage).

V. Application Performance Parameters

Material Adaptability

Applicable materials: Fabrics, leather, composites, thin sheets; thickness range (0.1–5mm thin vs. 5–20mm thick) requires matching blade thickness.
Significance: Wrong blade choice causes poor cutting (e.g., thick edges on thin materials fray edges).

Processing Performance

Key metrics:
- Cutting precision (±0.1mm vs. ±0.5mm, affects pass rate).
- Cutting speed (m/min, affects productivity).
- Edge life (measured by cutting length/time, determines maintenance costs).

VI. Auxiliary and Safety Parameters

Cooling and Protection

Cooling methods: Dry, air-cooled, water-cooled. High-speed vibration generates heat; insufficient cooling causes blade annealing (hardness loss).
Corrosion resistance: Anti-rust coatings extend life when processing humid/chemical materials.

Dynamic Balance Grade

Significance: Higher grades (e.g., G2.5) reduce vibration eccentricity → more stable equipment (avoids blade vibration, noise, precision degradation).

Core Logic

Blade selection requires comprehensive matching of edge design, vibration parameters, material properties, equipment compatibility, and application needs, centered on “what to cut (materials), how to cut (processes), and with what equipment,” to achieve efficient, stable, and low-cost cutting.</think>### I. Structural and Geometric Parameters

Cutting Edge Morphology

Types: Straight edge (linear cutting), round edge (prevents snagging of flexible materials), wave edge (chip breaking, reduces cutting force), sharp-tip/trapezoidal edge (precision/bevel processing).
Significance: Determines cutting edge quality (smoothness, curve adaptability) and material compatibility (e.g., leather needs round edges to avoid tearing; carbon fiber needs wave edges to prevent delamination).

Dimensional Specifications

Blade length/diameter: Affects clamping stability (overly long blades vibrate easily); edge width/angle (e.g., 26° edge angle) determines cutting depth and sharpness (acute angles for thin materials, obtuse angles for wear resistance).
Tip radius: Small radius (≤0.1mm) required for precision cutting (e.g., sharp-tip blades for narrow slits).

II. Vibration Characteristic Parameters

Vibration Frequency

Range: 1–5kHz (high-frequency reciprocation) or low-frequency oscillation (tens of Hz), must match equipment vibration system (e.g., if equipment max frequency is 3kHz, blade frequency must stay within range).
Significance: Higher frequency boosts cutting efficiency (more impacts) but demands better blade toughness (prone to fatigue fracture).

Amplitude

Range: Several microns (precision cutting) to tens of microns (thick material cutting; e.g., ultrasonic blade amplitude 10–50μm).
Significance: Larger amplitude → stronger cutting force (suits thick materials) but higher energy consumption; smaller amplitude → higher precision (suits films, leather).

Vibration Direction

Types: Axial vibration (along blade shank), radial oscillation (deflection around axis, e.g., oscillating cutting), compound vibration (multi-directional superposition).
Significance: Axial suits linear/thin materials; radial oscillation adapts to curves/3D contours (e.g., automotive interior curved surfaces).

III. Material and Performance Parameters

Material Type

Options:
- Tungsten steel (carbide): Wear-resistant, suits medium-thick materials.
- Ceramic: Ultra-hard but brittle (suits high-hardness materials).
- Coatings (diamond, TiN): Enhance wear/corrosion resistance, extend service life by 3–5 times.
Significance: Material dictates service life, cost, and application scenarios (e.g., ceramic blades chip easily on hard brittle materials, so avoid them).

Mechanical Properties

Hardness: HRC 85–90 for tungsten steel; higher hardness improves wear resistance but risks chipping (composite coatings balance this).
Thermal stability: Resistance to softening under high temperatures (from vibration heat) affects long-term service life.

IV. Compatibility Parameters

Clamping and Interface

Shank type: ER collet, custom taper shank; diameter tolerance must strictly match equipment spindle (otherwise, vibration eccentricity reduces precision and damages equipment).

Equipment Compatibility

Vibration system matching: Frequency range, power matching. Insufficient power can’t drive high-amplitude blades; frequency mismatch causes weak vibration (insufficient force) or overload (blade/equipment damage).

V. Application Performance Parameters

Material Adaptability

Applicable materials: Fabrics, leather, composites, thin sheets; thickness range (0.1–5mm thin vs. 5–20mm thick) requires matching blade thickness.
Significance: Wrong blade choice causes poor cutting (e.g., thick edges on thin materials fray edges).

Processing Performance

Key metrics:
- Cutting precision (±0.1mm vs. ±0.5mm, affects pass rate).
- Cutting speed (m/min, affects productivity).
- Edge life (measured by cutting length/time, determines maintenance costs).

VI. Auxiliary and Safety Parameters

Cooling and Protection

Cooling methods: Dry, air-cooled, water-cooled. High-speed vibration generates heat; insufficient cooling causes blade annealing (hardness loss).
Corrosion resistance: Anti-rust coatings extend life when processing humid/chemical materials.

Dynamic Balance Grade

Significance: Higher grades (e.g., G2.5) reduce vibration eccentricity → more stable equipment (avoids blade vibration, noise, precision degradation).

Core Logic

How to maintain and service cutting blades?

Maintaining and servicing vibration blades delays wear, ensures cutting precision and stability, thus reducing operational costs and boosting production efficiency.

I. Daily Maintenance After Use (Post-Each Operation)

1. Cleaning the Cutting Edge and Tool Shank

Use a soft-bristled brush or high-pressure air gun to remove residual fibers/debris from the cutting edge (avoid hard scraping to prevent damage).
For oily/sticky materials (e.g., rubber, adhesive films): Wipe the edge with alcohol or a specialized cleaner to prevent residue hardening and wear.
Wipe the tool shank’s clamping area to remove oil stains/debris (prevents slipping or eccentricity during clamping).

2. Basic Condition Inspection

Visual Check: Inspect the cutting edge for obvious chipping, curling, or burrs (focus on convex parts of wave-edge/multi-ridge blades).
Tactile Check: Gently touch the edge (wearing gloves) to detect abnormal dullness or unevenness.

II. Regular In-Depth Maintenance (Every 50 Operating Hours or Weekly)

1. Fine Maintenance of the Cutting Edge

Minor Wear (slight edge dulling): Use diamond grinding paste (grit 800–1200) to regrind at the original edge angle (avoid changing the angle, which reduces precision).
Severe Damage (cracks, notches >0.5mm): Replace the blade immediately (prohibited from continued use to prevent fragment splashing during vibration).

2. Maintenance of the Clamping System

Clean the collet: Remove the tool shank, clean dust/metal debris (soak in a specialized cleaner, then dry).
Check collet tightness: After clamping, gently shake the tool shank—no obvious looseness (looseness causes vibration eccentricity and accelerates wear).
Apply anti-rust oil: Coat the tool shank’s metal contact area with a thin layer of anti-rust oil (prevents rust in humid environments).

3. Calibration of Vibration Parameters

Cooperate with the equipment control system to verify that actual vibration frequency/amplitude are within the blade’s applicable range (e.g., for a 3kHz-rated blade, ensure equipment output is 2.8–3.2kHz).
Test idle vibration stability: No abnormal noise or blade deflection (excessive deflection causes uneven edge wear).

III. Maintenance During Long-Term Idle Periods (Shutdown >7 Days)

1. Comprehensive Cleaning and Protection

Thoroughly clean the cutting edge and tool shank, then apply a thin layer of anti-rust oil to the edge (use specialized tool rust inhibitor; avoid engine oil to prevent contamination).
Wrap the blade in moisture-proof paper or a sealed bag to avoid collisions (especially protect fragile parts of sharp-tip/wave-edge blades).

2. Storage Specifications

Place vertically on a specialized blade holder (cutting edge facing up or horizontal to avoid pressure-induced deformation).
Store in a dry (humidity <60%), well-ventilated environment, away from corrosive gases (e.g., acid-base fumes in workshops).

IV. Usage Specifications (Indirectly Extend Service Life)

1. Avoid Over-Range Use

Do not cut materials beyond the blade’s rated hardness/thickness (e.g., thin-edge blades can’t cut thick hard plastics; wave-edge blades can’t cut metal).
When changing materials, adjust vibration parameters simultaneously (e.g., reduce frequency/feed speed for thick materials to avoid overload).

2. Immediate Handling of Abnormalities

If abnormal noise, sparks, or rough edges occur during cutting: Stop the machine immediately for inspection (causes may include edge wear, loose clamping, or parameter mismatch). Resume operation only after troubleshooting.

Core Value

Following these steps can reduce abnormal blade wear by over 30%, extend service life, and maintain stable cutting precision.

How long can a blade typically be used?

The replacement cycle of vibration blades serves as a key basis for balancing cutting precision, production efficiency, and usage costs—it avoids reduced cutting quality and efficiency caused by excessive wear, while also preventing unnecessary waste from premature replacement.

Type of Cutting Material	Examples of Specific Materials	Replacement Cycle Range (with proper maintenance, 8 hours of daily use)
Soft materials	Fabrics, foams, papers, thin non-wovens, etc.	1–3 months
Medium-hard materials	Leathers, rubbers, soft plastics, PVC boards, etc.	2–4 weeks
Hard/high-wear materials	Hard plastics, thin metal sheets, glass fibers, carbon fiber composites, etc.	1–2 weeks (or even shorter)

Core Criteria for Replacement (not fixed by time, subject to actual conditions):

Obvious roughness or wrinkling on the cutting edge, with decreased precision (cannot be restored by grinding);
Severe chipping or curling of the cutting edge (notch ＞0.5mm), or abnormal noise during vibration;
Frequent material jamming or dragging even after parameter adjustment, which affects production efficiency.

(Note: Regular maintenance can extend the replacement cycle by 30%–50%; the actual cycle depends on the blade wear status and cutting effect.)