Rushan Shuangxing Machine Tool Manufacturing Co., Ltd. is one of the leading manufacturers and suppliers of knife making surface grinder in China. With abundant experience, our factory offer high quality equipment made in China with competitive price. Welcome to contact us for customized service.
Industrial knife fabrication facilities require stable, repeatable surface grinding to process heat-treated tool steel blanks, including circular slitter blades, packaging cutters and mechanical machine knives. Standard grinding units often require frequent workpiece clamping adjustment during batch runs, and fail to sustain steady face runout during long-hour operation, which affects flatness uniformity and final edge finishing of finished cutting blades.
Designed for daily knife fabrication workflow, this Knife Making Surface Grinder adopts practical structural configuration to fit regular circular knife blank machining. Equipped with extended 500mm reciprocating travel and matched fixture mounting area, it reduces repeated workpiece repositioning during batch processing. The twin synchronous spindle drive provides steady grinding torque for both rough stock removal and fine surface finishing on high-hardness tool steel. Core machining dimensions are configurable upon factory order, to match regular custom blade size requirements for onsite production.
Built with reinforced cast base structure, the machine controls operational vibration steadily, sustaining consistent machining data for continuous workshop production, and minimizing secondary manual honing work for finished knife edges.
Finishing Tolerance for Cutting Blanks
All accuracy readings are captured under continuous full-load blade grinding cycles; minor deviations may arise from raw tool steel hardness and blank profile differences:
- Size deviation across workpieces: 0.02 mm
- Parallelism error: 0.005 mm
- Face runout: 0.005 mm
- Final surface roughness: Ra 0.32 μm
These strict geometric standards eliminate uneven edge wear and chatter during cutting operations. Uniform parallel surfaces and minimal face wobble ensure consistent sharpness across every finished knife, reducing post-grind edge honing labor and boosting end-product quality for industrial cutting tool suppliers.
Advantages
Wide Customizable Machining Window and Purpose-Built Abrasive Wheel
The unit's baseline working dimensions cover most industrial circular knife blanks, with all core ranges open to factory customization:
- Supported workpiece diameter: 50-300 mm
- Machinable blank thickness: 5-80 mm
It is equipped with a large-format 500×300×63 mm grinding wheel, engineered with a broad contact surface to evenly abrade wide knife faces without creating uneven low spots on blade surfaces. The oversized abrasive wheel minimizes frequent wheel dressing cycles, a major efficiency gain for facilities running non-stop knife batch production.
A 120 mm vertical grinding head stroke delivers flexible vertical positioning for diverse fixture jigs built to secure knife blanks, streamlining changeovers between thin slicing blades and thick heavy-duty cutters.
Long Reciprocating Travel and Calibrated Spindle Operation
The standout design feature for knife production is its 500mm horizontal reciprocating stroke. This extended travel enables full stacks of large-diameter knife blanks to be processed in one continuous pass, eliminating repeated clamping and alignment steps that introduce runout errors. The grinding head spindle runs at a fixed 1060 RPM, a rotation speed calibrated for tool steel alloys. This consistent rotational velocity produces uniform scratch patterns on blade surfaces, laying a stable foundation for subsequent edge sharpening processes.
Balanced Dual Motor Power Architecture
Two synchronized 15kW grinding head motors form the core drive system, and the total installed power is 35kW. The dual-motor split evenly distributes cutting vibration across the machine base, which prevents spindle tilt that would warp knife flatness during long production shifts. The segmented power layout avoids single motor overload during heavy stock removal on thick high-hardness tool steel blanks, lowering component wear and extending the machine's service life for daily round-the-clock knife manufacturing lines.
Primary Application Industries
This blade-dedicated grinding equipment serves industrial knife manufacturers, slitter blade foundries, packaging cutter production facilities and metal cutting tool fabrication workshops. It specializes in batch planar finishing of large-diameter circular steel knife blanks, cutting secondary edge processing time and raising finished cutting tool qualification rates.
Frequently Asked Questions
Q1: Why is the extended 500mm reciprocating stroke critical for knife production?
A: The long horizontal travel lets operators process multiple large-diameter knife blanks in a single setup. It eliminates repeated repositioning that introduces face runout defects, preserving the tight geometric tolerances essential for sharp, long-lasting cutting blades.
Q2: Can the machine's working dimensions be adjusted for custom knife sizes?
A: All core processing ranges including maximum blank diameter and thickness can be reworked during equipment manufacturing. This customizability fits small-batch bespoke knife production as well as standardized mass blade lines.
Q3: How does tight face runout tolerance benefit finished industrial knives?
A: Limited face runout removes lateral wobble during cutting work. Finished blades maintain even contact with material, delivering cleaner cuts, reducing edge chipping and extending the usable service life of each knife.
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